Replace minetest namespace with core (#158)

Co-authored-by: SX <50966843+S-S-X@users.noreply.github.com>

.github/workflows/luacheck.yml

@@ -0,0 +1,10 @@
+name: luacheck
+on: [push, pull_request]
+jobs:
+  luacheck:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@master
+      - name: Luacheck
+        uses: lunarmodules/luacheck@master

.gitignore

@@ -1 +1,22 @@
+## Files related to luanti development cycle
+/*.patch
+# GNU Patch reject file
+*.rej
+
+## Editors and Development environments
 *~
+*.swp
+*.bak*
+*.orig
+# Vim
+*.vim
+# Kate
+.*.kate-swp
+.swp.*
+# Eclipse (LDT)
+.project
+.settings/
+.buildpath
+.metadata
+# Idea IDE
+.idea/*

.luacheckrc

@@ -0,0 +1,19 @@
+unused_args = false
+max_line_length= 240
+redefined = false
+std = "minetest+max"
+
+globals = {
+	"pipeworks",
+	"luaentity"
+}
+
+read_globals = {
+	-- remove after luacheck release: https://github.com/lunarmodules/luacheck/issues/121
+	"core",
+	-- mods
+	"default", "mesecon", "digilines",
+	"screwdriver", "unified_inventory",
+	"i3", "mcl_experience", "awards",
+	"xcompat", "fakelib", "vizlib"
+}

LICENSE

@@ -1,17 +1,600 @@
-            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
-                    Version 2, December 2004
+License for code: LGPL 3.0
+License for media and all other assets:  CC-by-SA 4.0
 
- Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>
+###############################################################################
 
- Everyone is permitted to copy and distribute verbatim or modified
- copies of this license document, and changing it is allowed as long
- as the name is changed.
+                   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
 
-            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
-   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
 
-  0. You just DO WHAT THE FUCK YOU WANT TO.
 
-----------
+  This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
 
-This license is commonly known as "WTFPL".
+  0. Additional Definitions.
+
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README

@@ -1,7 +1,7 @@
 This mod uses nodeboxes to supply a complete set of 3D pipes and tubes, 
 along devices that work with them.
 
-See https://github.com/VanessaE/pipeworks/wiki/ for detailed information about usage of this mod.
+See https://github.com/mt-mods/pipeworks/wiki/ for detailed information about usage of this mod.
 
 Unlike the previous version of this mod, these pipes are rounded, and when 
 placed, they'll automatically join together as needed.  Pipes can go vertically 
@@ -20,3 +20,7 @@ This mod is a work in progress.
 
 Please note that owing to the nature of this mod, I have opted to use 64px 
 textures.  Anything less just looks terrible.
+
+The teleport tube database used to be kept in a file named 'teleport_tubes'.
+The database is now kept in mod storage. The migration from 'teleport_tubes' is
+automatic. The old file is then kept around but is not used at all.

autocrafter.lua

@@ -1,10 +1,15 @@
-local autocrafterCache = {}  -- caches some recipe data to avoid to call the slow function minetest.get_craft_result() every second
+local S = core.get_translator("pipeworks")
+-- cache some recipe data to avoid calling the slow function
+-- core.get_craft_result() every second
+local autocrafterCache = {}
 
 local craft_time = 1
+local next = next
 
 local function count_index(invlist)
 	local index = {}
 	for _, stack in pairs(invlist) do
+		stack = ItemStack(stack)
 		if not stack:is_empty() then
 			local stack_name = stack:get_name()
 			index[stack_name] = (index[stack_name] or 0) + stack:get_count()
@@ -15,64 +20,249 @@ end
 
 local function get_item_info(stack)
 	local name = stack:get_name()
-	local def = minetest.registered_items[name]
-	local description = def and def.description or "Unknown item"
+	local def = core.registered_items[name]
+	local description = def and def.description or S("Unknown item")
 	return description, name
 end
 
-local function get_craft(pos, inventory, hash)
-	local hash = hash or minetest.hash_node_position(pos)
-	local craft = autocrafterCache[hash]
-	if not craft then
-		local recipe = inventory:get_list("recipe")
-		local output, decremented_input = minetest.get_craft_result({method = "normal", width = 3, items = recipe})
-		craft = {recipe = recipe, consumption=count_index(recipe), output = output, decremented_input = decremented_input}
-		autocrafterCache[hash] = craft
+-- Get best matching recipe for what user has put in crafting grid.
+-- This function does not consider crafting method (mix vs craft)
+local function get_matching_craft(output_name, example_recipe)
+	local recipes = core.get_all_craft_recipes(output_name)
+	if not recipes then
+		return example_recipe
 	end
+
+	if 1 == #recipes then
+		return recipes[1].items
+	end
+
+	local index_example = count_index(example_recipe)
+	local best_score = 0
+	local index_recipe, best_index, score, group
+	for i = 1, #recipes do
+		score = 0
+		index_recipe = count_index(recipes[i].items)
+		for recipe_item_name, _ in pairs(index_recipe) do
+			if index_example[recipe_item_name] then
+				score = score + 1
+			elseif recipe_item_name:sub(1, 6) == "group:" then
+				group = recipe_item_name:sub(7)
+				for example_item_name, _ in pairs(index_example) do
+					if core.get_item_group(
+						example_item_name, group) ~= 0
+					then
+						score = score + 1
+						break
+					end
+				end
+			end
+		end
+		if best_score < score then
+			best_index = i
+			best_score = score
+		end
+	end
+
+	return best_index and recipes[best_index].items or example_recipe
+end
+
+local function get_craft(pos, inventory, hash)
+	local hash = hash or core.hash_node_position(pos)
+	local craft = autocrafterCache[hash]
+	if craft then return craft end
+
+	local example_recipe = inventory:get_list("recipe")
+	local output, decremented_input = core.get_craft_result({
+		method = "normal", width = 3, items = example_recipe
+	})
+
+	local recipe = example_recipe
+	if output and not output.item:is_empty() then
+		recipe = get_matching_craft(output.item:get_name(), example_recipe)
+	end
+
+	craft = {
+		recipe = recipe,
+		consumption = count_index(recipe),
+		output = output,
+		decremented_input = decremented_input.items
+	}
+	autocrafterCache[hash] = craft
 	return craft
 end
 
+-- From a consumption table with groups and an inventory index,
+-- build a consumption table without groups
+local function calculate_consumption(inv_index, consumption_with_groups)
+	inv_index = table.copy(inv_index)
+	consumption_with_groups = table.copy(consumption_with_groups)
+
+	-- table of items to actually consume
+	local consumption = {}
+	-- table of ingredients defined as one or more groups each
+	local grouped_ingredients = {}
+
+	-- First consume all non-group requirements
+	-- This is done to avoid consuming a non-group item which
+	-- is also in a group
+	for key, count in pairs(consumption_with_groups) do
+		if key:sub(1, 6) == "group:" then
+			-- build table with group recipe items while looping
+			grouped_ingredients[key] = key:sub(7):split(',')
+		else
+			-- if the item to consume doesn't exist in inventory
+			-- or not enough of them, abort crafting
+			if not inv_index[key] or inv_index[key] < count then
+				return nil
+			end
+
+			consumption[key] = (consumption[key] or 0) + count
+			consumption_with_groups[key] = consumption_with_groups[key] - count
+			assert(consumption_with_groups[key] == 0)
+			consumption_with_groups[key] = nil
+			inv_index[key] = inv_index[key] - count
+			assert(inv_index[key] >= 0)
+		end
+	end
+
+	-- helper function to resolve matching ingredients with multiple group
+	-- requirements
+	local function ingredient_groups_match_item(ingredient_groups, name)
+		local found = 0
+		local count_ingredient_groups = #ingredient_groups
+		for i = 1, count_ingredient_groups do
+			if core.get_item_group(name,
+				ingredient_groups[i]) ~= 0
+			then
+				found = found + 1
+			end
+		end
+		return found == count_ingredient_groups
+	end
+
+	-- Next, resolve groups using the remaining items in the inventory
+	if next(grouped_ingredients) ~= nil then
+		local take
+		for itemname, count in pairs(inv_index) do
+			if count > 0 then
+				-- groupname is the string as defined by recipe.
+				--  e.g. group:dye,color_blue
+				-- groups holds the group names split into a list
+				--  ready to be passed to core.get_item_group()
+				for groupname, groups in pairs(grouped_ingredients) do
+					if consumption_with_groups[groupname] > 0
+						and ingredient_groups_match_item(groups, itemname)
+					then
+						take = math.min(count,
+							consumption_with_groups[groupname])
+						consumption_with_groups[groupname] =
+							consumption_with_groups[groupname] - take
+
+						assert(consumption_with_groups[groupname] >= 0)
+						consumption[itemname] =
+							(consumption[itemname] or 0) + take
+
+						inv_index[itemname] =
+							inv_index[itemname] - take
+						assert(inv_index[itemname] >= 0)
+					end
+				end
+			end
+		end
+	end
+
+	-- Finally, check everything has been consumed
+	for key, count in pairs(consumption_with_groups) do
+		if count > 0 then
+			return nil
+		end
+	end
+
+	return consumption
+end
+
+local function has_room_for_output(list_output, index_output)
+	local name
+	local empty_count = 0
+	for _, item in pairs(list_output) do
+		if item:is_empty() then
+			empty_count = empty_count + 1
+		else
+			name = item:get_name()
+			if index_output[name] then
+				index_output[name] = index_output[name] - item:get_free_space()
+			end
+		end
+	end
+	for _, count in pairs(index_output) do
+		if count > 0 then
+			empty_count = empty_count - 1
+		end
+	end
+	if empty_count < 0 then
+		return false
+	end
+
+	return true
+end
+
 local function autocraft(inventory, craft)
 	if not craft then return false end
-	local output_item = craft.output.item
 
-	-- check if we have enough room in dst
-	if not inventory:room_for_item("dst", output_item) then	return false end
-	local consumption = craft.consumption
-	local inv_index = count_index(inventory:get_list("src"))
-	-- check if we have enough material available
-	for itemname, number in pairs(consumption) do
-		if (not inv_index[itemname]) or inv_index[itemname] < number then return false end
+	-- check if output and all replacements fit in dst
+	local output = craft.output.item
+	local out_items = count_index(craft.decremented_input)
+	out_items[output:get_name()] =
+			(out_items[output:get_name()] or 0) + output:get_count()
+
+	if not has_room_for_output(inventory:get_list("dst"), out_items) then
+		return false
 	end
+
+	-- check if we have enough material available
+	local inv_index = count_index(inventory:get_list("src"))
+	local consumption = calculate_consumption(inv_index, craft.consumption)
+	if not consumption then
+		return false
+	end
+
 	-- consume material
 	for itemname, number in pairs(consumption) do
-		for i = 1, number do -- We have to do that since remove_item does not work if count > stack_max
+		-- We have to do that since remove_item does not work if count > stack_max
+		for _ = 1, number do
 			inventory:remove_item("src", ItemStack(itemname))
 		end
 	end
 
 	-- craft the result into the dst inventory and add any "replacements" as well
-	inventory:add_item("dst", output_item)
+	inventory:add_item("dst", output)
+	local leftover
 	for i = 1, 9 do
-		inventory:add_item("dst", craft.decremented_input.items[i])
+		leftover = inventory:add_item("dst", craft.decremented_input[i])
+		if leftover and not leftover:is_empty() then
+			core.log("warning", "[pipeworks] autocrafter didn't " ..
+				"calculate output space correctly.")
+		end
 	end
 	return true
 end
 
 -- returns false to stop the timer, true to continue running
--- is started only from start_autocrafter(pos) after sanity checks and cached recipe
+-- is started only from start_autocrafter(pos) after sanity checks and
+-- recipe is cached
 local function run_autocrafter(pos, elapsed)
-	local meta = minetest.get_meta(pos)
+	local meta = core.get_meta(pos)
 	local inventory = meta:get_inventory()
 	local craft = get_craft(pos, inventory)
 	local output_item = craft.output.item
 	-- only use crafts that have an actual result
 	if output_item:is_empty() then
-		meta:set_string("infotext", "unconfigured Autocrafter: unknown recipe")
+		meta:set_string("infotext", S("unconfigured Autocrafter: unknown recipe"))
 		return false
 	end
 
-	for step = 1, math.floor(elapsed/craft_time) do
+	for _ = 1, math.floor(elapsed / craft_time) do
 		local continue = autocraft(inventory, craft)
 		if not continue then return false end
 	end
@@ -80,9 +270,9 @@ local function run_autocrafter(pos, elapsed)
 end
 
 local function start_crafter(pos)
-	local meta = minetest.get_meta(pos)
+	local meta = core.get_meta(pos)
 	if meta:get_int("enabled") == 1 then
-		local timer = minetest.get_node_timer(pos)
+		local timer = core.get_node_timer(pos)
 		if not timer:is_started() then
 			timer:start(craft_time)
 		end
@@ -96,48 +286,33 @@ end
 -- note, that this function assumes allready being updated to virtual items
 -- and doesn't handle recipes with stacksizes > 1
 local function after_recipe_change(pos, inventory)
-	local meta = minetest.get_meta(pos)
+	local hash = core.hash_node_position(pos)
+	local meta = core.get_meta(pos)
+	autocrafterCache[hash] = nil
 	-- if we emptied the grid, there's no point in keeping it running or cached
 	if inventory:is_empty("recipe") then
-		minetest.get_node_timer(pos):stop()
-		autocrafterCache[minetest.hash_node_position(pos)] = nil
-		meta:set_string("infotext", "unconfigured Autocrafter")
+		core.get_node_timer(pos):stop()
+		meta:set_string("infotext", S("unconfigured Autocrafter"))
+		inventory:set_stack("output", 1, "")
 		return
 	end
-	local recipe_changed = false
-	local recipe = inventory:get_list("recipe")
-
-	local hash = minetest.hash_node_position(pos)
-	local craft = autocrafterCache[hash]
-
-	if craft then
-		-- check if it changed
-		local cached_recipe = craft.recipe
-		for i = 1, 9 do
-			if recipe[i]:get_name() ~= cached_recipe[i]:get_name() then
-				autocrafterCache[hash] = nil -- invalidate recipe
-				craft = nil
-				break
-			end
-		end
-	end
-
-	craft = craft or get_craft(pos, inventory, hash)
+	local craft = get_craft(pos, inventory, hash)
 	local output_item = craft.output.item
 	local description, name = get_item_info(output_item)
-	meta:set_string("infotext", string.format("'%s' Autocrafter (%s)", description, name))
+	meta:set_string("infotext", S("'@1' Autocrafter (@2)", description, name))
 	inventory:set_stack("output", 1, output_item)
 
 	after_inventory_change(pos)
 end
 
--- clean out unknown items and groups, which would be handled like unknown items in the crafting grid
--- if minetest supports query by group one day, this might replace them
+-- clean out unknown items and groups, which would be handled like unknown
+-- items in the crafting grid
+-- if Luanti supports query by group one day, this might replace them
 -- with a canonical version instead
 local function normalize(item_list)
 	for i = 1, #item_list do
 		local name = item_list[i]
-		if not minetest.registered_items[name] then
+		if not core.registered_items[name] then
 			item_list[i] = ""
 		end
 	end
@@ -149,7 +324,7 @@ local function on_output_change(pos, inventory, stack)
 		inventory:set_list("output", {})
 		inventory:set_list("recipe", {})
 	else
-		local input = minetest.get_craft_recipe(stack:get_name())
+		local input = core.get_craft_recipe(stack:get_name())
 		if not input.items or input.type ~= "normal" then return end
 		local items, width = normalize(input.items), input.width
 		local item_idx, width_idx = 1, 1
@@ -162,52 +337,92 @@ local function on_output_change(pos, inventory, stack)
 			end
 			width_idx = (width_idx < 3) and (width_idx + 1) or 1
 		end
-		-- we'll set the output slot in after_recipe_change to the actual result of the new recipe
+		-- we'll set the output slot in after_recipe_change to the actual
+		-- result of the new recipe
 	end
 	after_recipe_change(pos, inventory)
 end
 
--- returns false if we shouldn't bother attempting to start the timer again after this
+-- returns false if we shouldn't bother attempting to start the timer again
+-- after this
 local function update_meta(meta, enabled)
 	local state = enabled and "on" or "off"
 	meta:set_int("enabled", enabled and 1 or 0)
-	meta:set_string("formspec",
-			"size[8,11]"..
-			"list[context;recipe;0,0;3,3;]"..
-			"image[3,1;1,1;gui_hb_bg.png^[colorize:#141318:255]"..
-			"list[context;output;3,1;1,1;]"..
-			"image_button[3,2;1,1;pipeworks_button_" .. state .. ".png;" .. state .. ";;;false;pipeworks_button_interm.png]" ..
-			"list[context;src;0,3.5;8,3;]"..
-			"list[context;dst;4,0;4,3;]"..
-			default.gui_bg..
-			default.gui_bg_img..
-			default.gui_slots..
-			default.get_hotbar_bg(0,7) ..
-			"list[current_player;main;0,7;8,4;]")
+	local list_backgrounds = ""
+	if core.get_modpath("i3") or core.get_modpath("mcl_formspec") then
+		list_backgrounds = "style_type[box;colors=#666]"
+		for i = 0, 2 do
+			for j = 0, 2 do
+				list_backgrounds = list_backgrounds .. "box[" ..
+					0.22 + (i * 1.25) .. "," .. 0.22 + (j * 1.25) .. ";1,1;]"
+			end
+		end
+		for i = 0, 3 do
+			for j = 0, 2 do
+				list_backgrounds = list_backgrounds .. "box[" ..
+					5.28 + (i * 1.25) .. "," .. 0.22 + (j * 1.25) .. ";1,1;]"
+			end
+		end
+		for i = 0, 7 do
+			for j = 0, 2 do
+				list_backgrounds = list_backgrounds .. "box[" ..
+					0.22 + (i * 1.25) .. "," .. 5 + (j * 1.25) .. ";1,1;]"
+			end
+		end
+	end
+	local size = "10.2,14"
+	local fs =
+		"formspec_version[2]" ..
+		"size[" .. size .. "]" ..
+		pipeworks.fs_helpers.get_prepends(size) ..
+		list_backgrounds ..
+		"list[context;recipe;0.22,0.22;3,3;]" ..
+		"image[4,1.45;1,1;[combine:16x16^[noalpha^[colorize:#141318:255]" ..
+		"list[context;output;4,1.45;1,1;]" ..
+		"image_button[4,2.6;1,0.6;pipeworks_button_" .. state .. ".png;" ..
+		state .. ";;;false;pipeworks_button_interm.png]" ..
+		"list[context;dst;5.28,0.22;4,3;]" ..
+		"list[context;src;0.22,5;8,3;]" ..
+		pipeworks.fs_helpers.get_inv(9) ..
+		"listring[current_player;main]" ..
+		"listring[context;src]" ..
+		"listring[current_player;main]" ..
+		"listring[context;dst]" ..
+		"listring[current_player;main]"
+	if core.get_modpath("digilines") then
+		fs = fs .. "field[0.22,4.1;4.5,0.75;channel;" .. S("Channel") ..
+			";${channel}]" ..
+			"button[5,4.1;1.5,0.75;set_channel;" .. S("Set") .. "]" ..
+			"button_exit[6.8,4.1;2,0.75;close;" .. S("Close") .. "]"
+	end
+	meta:set_string("formspec", fs)
 
 	-- toggling the button doesn't quite call for running a recipe change check
 	-- so instead we run a minimal version for infotext setting only
 	-- this might be more written code, but actually executes less
 	local output = meta:get_inventory():get_stack("output", 1)
 	if output:is_empty() then -- doesn't matter if paused or not
-		meta:set_string("infotext", "unconfigured Autocrafter")
+		meta:set_string("infotext", S("unconfigured Autocrafter"))
 		return false
 	end
 
 	local description, name = get_item_info(output)
-	local infotext = enabled and string.format("'%s' Autocrafter (%s)", description, name)
-				or string.format("paused '%s' Autocrafter", description)
+	local infotext = enabled and S("'@1' Autocrafter (@2)", description, name)
+				or S("paused '@1' Autocrafter", description)
 
 	meta:set_string("infotext", infotext)
 	return enabled
 end
 
 -- 1st version of the autocrafter had actual items in the crafting grid
--- the 2nd replaced these with virtual items, dropped the content on update and set "virtual_items" to string "1"
--- the third added an output inventory, changed the formspec and added a button for enabling/disabling
--- so we work out way backwards on this history and update each single case to the newest version
+-- the 2nd replaced these with virtual items, dropped the content on update and
+--   set "virtual_items" to string "1"
+-- the third added an output inventory, changed the formspec and added a button
+--   for enabling/disabling
+-- so we work out way backwards on this history and update each single case
+--   to the newest version
 local function upgrade_autocrafter(pos, meta)
-	local meta = meta or minetest.get_meta(pos)
+	local meta = meta or core.get_meta(pos)
 	local inv = meta:get_inventory()
 
 	if inv:get_size("output") == 0 then -- we are version 2 or 1
@@ -216,14 +431,15 @@ local function upgrade_autocrafter(pos, meta)
 		update_meta(meta, true)
 
 		if meta:get_string("virtual_items") == "1" then -- we are version 2
-			-- we allready dropped stuff, so lets remove the metadatasetting (we are not being called again for this node)
+			-- we already dropped stuff, so lets remove the metadatasetting
+			-- (we are not being called again for this node)
 			meta:set_string("virtual_items", "")
 		else -- we are version 1
 			local recipe = inv:get_list("recipe")
 			if not recipe then return end
 			for idx, stack in ipairs(recipe) do
 				if not stack:is_empty() then
-					minetest.add_item(pos, stack)
+					core.add_item(pos, stack)
 					stack:set_count(1)
 					stack:set_wear(0)
 					inv:set_stack("recipe", idx, stack)
@@ -232,54 +448,66 @@ local function upgrade_autocrafter(pos, meta)
 		end
 
 		-- update the recipe, cache, and start the crafter
-		autocrafterCache[minetest.hash_node_position(pos)] = nil
+		autocrafterCache[core.hash_node_position(pos)] = nil
 		after_recipe_change(pos, inv)
 	end
 end
 
-minetest.register_node("pipeworks:autocrafter", {
-	description = "Autocrafter",
+core.register_node("pipeworks:autocrafter", {
+	description = S("Autocrafter"),
 	drawtype = "normal",
 	tiles = {"pipeworks_autocrafter.png"},
-	groups = {snappy = 3, tubedevice = 1, tubedevice_receiver = 1},
+	groups = {snappy = 3, tubedevice = 1, tubedevice_receiver = 1, dig_generic = 1, axey=1, handy=1, pickaxey=1},
+	is_ground_content = false,
+	_mcl_hardness=0.8,
 	tube = {insert_object = function(pos, node, stack, direction)
-			local meta = minetest.get_meta(pos)
+			local meta = core.get_meta(pos)
 			local inv = meta:get_inventory()
 			local added = inv:add_item("src", stack)
 			after_inventory_change(pos)
 			return added
 		end,
 		can_insert = function(pos, node, stack, direction)
-			local meta = minetest.get_meta(pos)
+			local meta = core.get_meta(pos)
 			local inv = meta:get_inventory()
 			return inv:room_for_item("src", stack)
 		end,
 		input_inventory = "dst",
-		connect_sides = {left = 1, right = 1, front = 1, back = 1, top = 1, bottom = 1}},
+		connect_sides = {
+			left = 1, right = 1, front = 1, back = 1, top = 1, bottom = 1
+			}
+	},
 	on_construct = function(pos)
-		local meta = minetest.get_meta(pos)
+		local meta = core.get_meta(pos)
 		local inv = meta:get_inventory()
-		inv:set_size("src", 3*8)
-		inv:set_size("recipe", 3*3)
-		inv:set_size("dst", 4*3)
+		inv:set_size("src", 3 * 8)
+		inv:set_size("recipe", 3 * 3)
+		inv:set_size("dst", 4 * 3)
 		inv:set_size("output", 1)
 		update_meta(meta, false)
 	end,
 	on_receive_fields = function(pos, formname, fields, sender)
-		if not pipeworks.may_configure(pos, sender) then return end
-		local meta = minetest.get_meta(pos)
+		if (fields.quit and not fields.key_enter_field)
+			or not pipeworks.may_configure(pos, sender)
+		then
+			return
+		end
+		local meta = core.get_meta(pos)
 		if fields.on then
 			update_meta(meta, false)
-			minetest.get_node_timer(pos):stop()
+			core.get_node_timer(pos):stop()
 		elseif fields.off then
 			if update_meta(meta, true) then
 				start_crafter(pos)
 			end
 		end
+		if fields.channel then
+			meta:set_string("channel", fields.channel)
+		end
 	end,
 	can_dig = function(pos, player)
 		upgrade_autocrafter(pos)
-		local meta = minetest.get_meta(pos)
+		local meta = core.get_meta(pos)
 		local inv = meta:get_inventory()
 		return (inv:is_empty("src") and inv:is_empty("dst"))
 	end,
@@ -288,12 +516,12 @@ minetest.register_node("pipeworks:autocrafter", {
 		pipeworks.scan_for_tube_objects(pos)
 	end,
 	on_destruct = function(pos)
-		autocrafterCache[minetest.hash_node_position(pos)] = nil
+		autocrafterCache[core.hash_node_position(pos)] = nil
 	end,
 	allow_metadata_inventory_put = function(pos, listname, index, stack, player)
 		if not pipeworks.may_configure(pos, player) then return 0 end
 		upgrade_autocrafter(pos)
-		local inv = minetest.get_meta(pos):get_inventory()
+		local inv = core.get_meta(pos):get_inventory()
 		if listname == "recipe" then
 			stack:set_count(1)
 			inv:set_stack(listname, index, stack)
@@ -308,11 +536,13 @@ minetest.register_node("pipeworks:autocrafter", {
 	end,
 	allow_metadata_inventory_take = function(pos, listname, index, stack, player)
 		if not pipeworks.may_configure(pos, player) then
-			minetest.log("action", string.format("%s attempted to take from autocrafter at %s", player:get_player_name(), minetest.pos_to_string(pos)))
+			core.log("action", string.format("%s attempted to take from " ..
+				"autocrafter at %s",
+				player:get_player_name(), core.pos_to_string(pos)))
 			return 0
 		end
 		upgrade_autocrafter(pos)
-		local inv = minetest.get_meta(pos):get_inventory()
+		local inv = core.get_meta(pos):get_inventory()
 		if listname == "recipe" then
 			inv:set_stack(listname, index, ItemStack(""))
 			after_recipe_change(pos, inv)
@@ -324,10 +554,12 @@ minetest.register_node("pipeworks:autocrafter", {
 		after_inventory_change(pos)
 		return stack:get_count()
 	end,
-	allow_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
+	allow_metadata_inventory_move = function(
+			pos, from_list, from_index, to_list, to_index, count, player)
+
 		if not pipeworks.may_configure(pos, player) then return 0 end
 		upgrade_autocrafter(pos)
-		local inv = minetest.get_meta(pos):get_inventory()
+		local inv = core.get_meta(pos):get_inventory()
 		local stack = inv:get_stack(from_list, from_index)
 
 		if to_list == "output" then
@@ -355,14 +587,63 @@ minetest.register_node("pipeworks:autocrafter", {
 		after_inventory_change(pos)
 		return count
 	end,
-	on_timer = run_autocrafter
-})
-
-minetest.register_craft( {
-	output = "pipeworks:autocrafter 2",
-	recipe = {
-	        { "default:steel_ingot", "default:mese_crystal", "default:steel_ingot" },
-	        { "homedecor:plastic_sheeting", "default:steel_ingot", "homedecor:plastic_sheeting" },
-	        { "default:steel_ingot", "default:mese_crystal", "default:steel_ingot" }
+	on_timer = run_autocrafter,
+	digilines = {
+		receptor = {},
+		effector = {
+			action = function(pos,node,channel,msg)
+				local meta = core.get_meta(pos)
+				if channel ~= meta:get_string("channel") then return end
+				if type(msg) == "table" then
+					if #msg < 3 then return end
+					local inv = meta:get_inventory()
+					for y = 0, 2, 1 do
+						local row = msg[y + 1]
+						for x = 1, 3, 1 do
+							local slot = y * 3 + x
+							if type(row) == "table" and core.registered_items[row[x]] then
+								inv:set_stack("recipe", slot, ItemStack(
+									row[x]))
+							else
+								inv:set_stack("recipe", slot, ItemStack(""))
+							end
+						end
+					end
+					after_recipe_change(pos,inv)
+				elseif msg == "get_recipe" then
+					local meta = core.get_meta(pos)
+					local inv = meta:get_inventory()
+					local recipe = {}
+					for y = 0, 2, 1 do
+						local row = {}
+						for x = 1, 3, 1 do
+							local slot = y * 3 + x
+							table.insert(row, inv:get_stack(
+									"recipe", slot):get_name())
+						end
+						table.insert(recipe, row)
+					end
+					local setchan = meta:get_string("channel")
+					local output = inv:get_stack("output", 1)
+					digilines.receptor_send(pos, digilines.rules.default, setchan, {
+						recipe = recipe,
+						result = {
+							name = output:get_name(),
+							count = output:get_count(),
+						}
+					  })
+				elseif msg == "off" then
+					update_meta(meta, false)
+					core.get_node_timer(pos):stop()
+				elseif msg == "on" then
+					if update_meta(meta, true) then
+						start_crafter(pos)
+					end
+				elseif msg == "single" then
+					run_autocrafter(pos,1)
+				end
+			end,
+		},
 	},
 })
+pipeworks.ui_cat_tube_list[#pipeworks.ui_cat_tube_list + 1] = "pipeworks:autocrafter"

autodetect-finite-water.lua

@@ -0,0 +1,9 @@
+-- enable finite liquid in the presence of dynamic liquid to preserve water volume.
+local enable = false
+
+if core.get_modpath("dynamic_liquid") then
+	pipeworks.logger("detected mod dynamic_liquid, enabling finite liquid flag")
+	enable = true
+end
+
+pipeworks.toggles.finite_water = enable

autoplace_pipes.lua

@@ -1,15 +1,80 @@
--- autorouting for pipes
+--[[
+
+	autorouting for pipes
+
+	To connect pipes to some node, include this in the node def...
+
+	pipe_connections = {
+		pattern = <string>,    -- if supplied, search for this pattern instead of the exact node name
+		left   = <bool>,       -- true (or 1) if the left side of the node needs to connect to a pipe
+		right  = <bool>,       -- or from the right side, etc.
+		top    = <bool>,
+		bottom = <bool>,
+		front  = <bool>,
+		back   = <bool>,
+		left_param2   = <num>, -- the node must have this param2 to connect from the left
+		right_param2  = <num>, -- or right, etc.
+		top_param2    = <num>, -- Omit some or all of these to skip checking param2 for those sides
+		bottom_param2 = <num>,
+		front_param2  = <num>,
+		back_param2   = <num>,
+	},
+
+	...then add,  pipeworks.scan_for_pipe_objects(pos)
+	to your node's after_dig_node and after_place_node callbacks.
+
+]]--
+
+-- get the axis dir (just 6 faces) of target node, assumes the pipe is the axis
+
+function pipeworks.get_axis_dir(nodetable, pattern)
+	local pxm,pxp,pym,pyp,pzm,pzp
+
+	if string.find(nodetable.nxm.name, pattern)
+	  and core.facedir_to_dir(nodetable.nxm.param2).x ~= 0 then
+		pxm=1
+	end
+
+	if string.find(nodetable.nxp.name, pattern)
+	  and core.facedir_to_dir(nodetable.nxp.param2).x ~= 0 then
+		pxp=1
+	end
+
+	if string.find(nodetable.nzm.name, pattern)
+	  and core.facedir_to_dir(nodetable.nzm.param2).z ~= 0 then
+		pzm=1
+	end
+
+	if string.find(nodetable.nzp.name, pattern)
+	  and core.facedir_to_dir(nodetable.nzp.param2).z ~= 0 then
+		pzp=1
+	end
+
+	if string.find(nodetable.nym.name, pattern)
+	  and core.facedir_to_dir(nodetable.nym.param2).y ~= 0 then
+		pym=1
+	end
+
+	if string.find(nodetable.nyp.name, pattern)
+	  and core.facedir_to_dir(nodetable.nyp.param2).y ~= 0 then
+		pyp=1
+	end
+	local match = pxm or pxp or pym or pyp or pzm or pzp
+	return match,pxm,pxp,pym,pyp,pzm,pzp
+end
+
 local tube_table = {[0] = 1, 2, 2, 4, 2, 4, 4, 5, 2, 3, 4, 6, 4, 6, 5, 7, 2, 4, 3, 6, 4, 5, 6, 7, 4, 6, 6, 8, 5, 7, 7, 9, 2, 4, 4, 5, 3, 6, 6, 7, 4, 6, 5, 7, 6, 8, 7, 9, 4, 5, 6, 7, 6, 7, 8, 9, 5, 7, 7, 9, 7, 9, 9, 10}
 local tube_table_facedirs = {[0] = 0, 0, 5, 0, 3, 4, 3, 0, 2, 0, 2, 0, 6, 4, 3, 0, 7, 12, 5, 12, 7, 4, 5, 5, 18, 20, 16, 0, 7, 4, 7, 0, 1, 8, 1, 1, 1, 13, 1, 1, 10, 8, 2, 2, 17, 4, 3, 6, 9, 9, 9, 9, 21, 13, 1, 1, 10, 10, 11, 2, 19, 4, 3, 0}
+
 local function autoroute_pipes(pos)
-	local nctr = minetest.get_node(pos)
+	local nctr = core.get_node(pos)
 	local state = "_empty"
 	if (string.find(nctr.name, "pipeworks:pipe_") == nil) then return end
 	if (string.find(nctr.name, "_loaded") ~= nil) then state = "_loaded" end
 	local nsurround = pipeworks.scan_pipe_surroundings(pos)
 
 	if nsurround == 0 then nsurround = 9 end
-	minetest.swap_node(pos, {name = "pipeworks:pipe_"..tube_table[nsurround]..state,
+	core.swap_node(pos, {name = "pipeworks:pipe_"..tube_table[nsurround]..state,
 				param2 = tube_table_facedirs[nsurround]})
 end
 
@@ -23,7 +88,7 @@ function pipeworks.scan_for_pipe_objects(pos)
 	autoroute_pipes(pos)
 end
 
--- auto-rotation code for various devices the tubes attach to
+-- auto-rotation code for various devices the pipes attach to
 
 function pipeworks.scan_pipe_surroundings(pos)
 	local pxm=0
@@ -33,168 +98,129 @@ function pipeworks.scan_pipe_surroundings(pos)
 	local pzm=0
 	local pzp=0
 
-	local nxm = minetest.get_node({ x=pos.x-1, y=pos.y  , z=pos.z   })
-	local nxp = minetest.get_node({ x=pos.x+1, y=pos.y  , z=pos.z   })
-	local nym = minetest.get_node({ x=pos.x  , y=pos.y-1, z=pos.z   })
-	local nyp = minetest.get_node({ x=pos.x  , y=pos.y+1, z=pos.z   })
-	local nzm = minetest.get_node({ x=pos.x  , y=pos.y  , z=pos.z-1 })
-	local nzp = minetest.get_node({ x=pos.x  , y=pos.y  , z=pos.z+1 })
+	local nxm = core.get_node({ x=pos.x-1, y=pos.y  , z=pos.z   })
+	local nxp = core.get_node({ x=pos.x+1, y=pos.y  , z=pos.z   })
+	local nym = core.get_node({ x=pos.x  , y=pos.y-1, z=pos.z   })
+	local nyp = core.get_node({ x=pos.x  , y=pos.y+1, z=pos.z   })
+	local nzm = core.get_node({ x=pos.x  , y=pos.y  , z=pos.z-1 })
+	local nzp = core.get_node({ x=pos.x  , y=pos.y  , z=pos.z+1 })
 
-	if (string.find(nxm.name, "pipeworks:pipe_") ~= nil) then pxm=1 end
-	if (string.find(nxp.name, "pipeworks:pipe_") ~= nil) then pxp=1 end
-	if (string.find(nym.name, "pipeworks:pipe_") ~= nil) then pym=1 end
-	if (string.find(nyp.name, "pipeworks:pipe_") ~= nil) then pyp=1 end
-	if (string.find(nzm.name, "pipeworks:pipe_") ~= nil) then pzm=1 end
-	if (string.find(nzp.name, "pipeworks:pipe_") ~= nil) then pzp=1 end
+	local nodetable = {
+		nxm = nxm,
+		nxp = nxp,
+		nym = nym,
+		nyp = nyp,
+		nzm = nzm,
+		nzp = nzp
+	}
+
+-- standard handling for pipes...
+
+	if string.find(nxm.name, "pipeworks:pipe_") then pxm=1 end
+	if string.find(nxp.name, "pipeworks:pipe_") then pxp=1 end
+	if string.find(nym.name, "pipeworks:pipe_") then pym=1 end
+	if string.find(nyp.name, "pipeworks:pipe_") then pyp=1 end
+	if string.find(nzm.name, "pipeworks:pipe_") then pzm=1 end
+	if string.find(nzp.name, "pipeworks:pipe_") then pzp=1 end
 
 -- Special handling for valves...
 
-	if (string.find(nxm.name, "pipeworks:valve") ~= nil)
-	  and (nxm.param2 == 0 or nxm.param2 == 2) then
-		pxm=1
-	end
-
-	if (string.find(nxp.name, "pipeworks:valve") ~= nil)
-	  and (nxp.param2 == 0 or nxp.param2 == 2) then
-		pxp=1
-	end
-
-	if (string.find(nzm.name, "pipeworks:valve") ~= nil)
-	  and (nzm.param2 == 1 or nzm.param2 == 3) then
-		pzm=1
-	end
-
-	if (string.find(nzp.name, "pipeworks:valve") ~= nil)
-	  and (nzp.param2 == 1 or nzp.param2 == 3) then
-		pzp=1
+	local match,a,b,c,d,e,f = pipeworks.get_axis_dir(nodetable, "pipeworks:valve")
+	if match then
+		pxm = a or pxm
+		pxp = b or pxp
+		pym = c or pym
+		pyp = d or pyp
+		pzm = e or pzm
+		pzp = f or pzp
 	end
 
 -- ...flow sensors...
 
-	if (string.find(nxm.name, "pipeworks:flow_sensor") ~= nil)
-	  and (nxm.param2 == 0 or nxm.param2 == 2) then
-		pxm=1
-	end
-
-	if (string.find(nxp.name, "pipeworks:flow_sensor") ~= nil)
-	  and (nxp.param2 == 0 or nxp.param2 == 2) then
-		pxp=1
-	end
-
-	if (string.find(nzm.name, "pipeworks:flow_sensor") ~= nil)
-	  and (nzm.param2 == 1 or nzm.param2 == 3) then
-		pzm=1
-	end
-
-	if (string.find(nzp.name, "pipeworks:flow_sensor") ~= nil)
-	  and (nzp.param2 == 1 or nzp.param2 == 3) then
-		pzp=1
-	end
-
--- ...spigots...
-
-	if (string.find(nxm.name, "pipeworks:spigot") ~= nil)
-	  and nxm.param2 == 1 then
-		pxm=1
-	end
-
-	if (string.find(nxp.name, "pipeworks:spigot") ~= nil)
-	  and nxp.param2 == 3 then
-		pxp=1
-	end
-
-	if (string.find(nzm.name, "pipeworks:spigot") ~= nil)
-	  and nzm.param2 == 0 then
-		pzm=1
-	end
-
-	if (string.find(nzp.name, "pipeworks:spigot") ~= nil)
-	  and nzp.param2 == 2 then
-		pzp=1
+	local match,a,b,c,d,e,f = pipeworks.get_axis_dir(nodetable, "pipeworks:flow_sensor")
+	if match then
+		pxm = a or pxm
+		pxp = b or pxp
+		pym = c or pym
+		pyp = d or pyp
+		pzm = e or pzm
+		pzp = f or pzp
 	end
 
 -- ...sealed pipe entry/exit...
 
-	if (string.find(nxm.name, "pipeworks:entry_panel") ~= nil)
-	  and (nxm.param2 == 1 or nxm.param2 == 3) then
-		pxm=1
+	local match,a,b,c,d,e,f = pipeworks.get_axis_dir(nodetable, "pipeworks:entry_panel")
+	if match then
+		pxm = a or pxm
+		pxp = b or pxp
+		pym = c or pym
+		pyp = d or pyp
+		pzm = e or pzm
+		pzp = f or pzp
 	end
 
-	if (string.find(nxp.name, "pipeworks:entry_panel") ~= nil)
-	  and (nxp.param2 == 1 or nxp.param2 == 3) then
-		pxp=1
+-- ...straight-only pipe...
+
+	local match,a,b,c,d,e,f = pipeworks.get_axis_dir(nodetable, "pipeworks:straight_pipe")
+	if match then
+		pxm = a or pxm
+		pxp = b or pxp
+		pym = c or pym
+		pyp = d or pyp
+		pzm = e or pzm
+		pzp = f or pzp
 	end
 
-	if (string.find(nzm.name, "pipeworks:entry_panel") ~= nil)
-	  and (nzm.param2 == 0 or nzm.param2 == 2) then
-		pzm=1
+-- ... other nodes
+
+	local def_left   = core.registered_nodes[nxp.name] -- the node that {pos} is to the left of (not the
+	local def_right  = core.registered_nodes[nxm.name] -- ...note that is AT the left!), etc.
+	local def_bottom = core.registered_nodes[nyp.name]
+	local def_top    = core.registered_nodes[nym.name]
+	local def_front  = core.registered_nodes[nzp.name]
+	local def_back   = core.registered_nodes[nzm.name]
+
+	if def_left and def_left.pipe_connections and def_left.pipe_connections.left
+	  and (not def_left.pipe_connections.pattern or string.find(nxp.name, def_left.pipe_connections.pattern))
+	  and (not def_left.pipe_connections.left_param2 or (nxp.param2 == def_left.pipe_connections.left_param2)) then
+		pxp = 1
+	end
+	if def_right and def_right.pipe_connections and def_right.pipe_connections.right
+	  and (not def_right.pipe_connections.pattern or string.find(nxm.name, def_right.pipe_connections.pattern))
+	  and (not def_right.pipe_connections.right_param2 or (nxm.param2 == def_right.pipe_connections.right_param2)) then
+		pxm = 1
+	end
+	if def_top and def_top.pipe_connections and def_top.pipe_connections.top
+	  and (not def_top.pipe_connections.pattern or string.find(nym.name, def_top.pipe_connections.pattern))
+	  and (not def_top.pipe_connections.top_param2 or (nym.param2 == def_top.pipe_connections.top_param2)) then
+		pym = 1
+	end
+	if def_bottom and def_bottom.pipe_connections and def_bottom.pipe_connections.bottom
+	  and (not def_bottom.pipe_connections.pattern or string.find(nyp.name, def_bottom.pipe_connections.pattern))
+	  and (not def_bottom.pipe_connections.bottom_param2 or (nyp.param2 == def_bottom.pipe_connections.bottom_param2)) then
+		pyp = 1
+	end
+	if def_front and def_front.pipe_connections and def_front.pipe_connections.front
+	  and (not def_front.pipe_connections.pattern or string.find(nzp.name, def_front.pipe_connections.pattern))
+	  and (not def_front.pipe_connections.front_param2 or (nzp.param2 == def_front.pipe_connections.front_param2)) then
+		pzp = 1
+	end
+	if def_back and def_back.pipe_connections and def_back.pipe_connections.back
+	  and (not def_back.pipe_connections.pattern or string.find(nzm.name, def_back.pipe_connections.pattern))
+	  and (not def_back.pipe_connections.back_param2 or (nzm.param2 == def_back.pipe_connections.back_param2)) then
+		pzm = 1
 	end
 
-	if (string.find(nzp.name, "pipeworks:entry_panel") ~= nil)
-	  and (nzp.param2 == 0 or nzp.param2 == 2) then
-		pzp=1
-	end
-
-	if (string.find(nym.name, "pipeworks:entry_panel") ~= nil)
-	  and nym.param2 == 13 then
-		pym=1
-	end
-
-	if (string.find(nyp.name, "pipeworks:entry_panel") ~= nil)
-	  and nyp.param2 == 13 then
-		pyp=1
-	end
-
-
--- ...pumps, grates...
-
-	if (string.find(nym.name, "pipeworks:grating") ~= nil) or
-	   (string.find(nym.name, "pipeworks:pump") ~= nil) then
-		pym=1
-	end
-
--- ...fountainheads...
-
-	if (string.find(nyp.name, "pipeworks:fountainhead") ~= nil) then
-		pyp=1
-	end
-
--- ... and storage tanks.
-
-	if (string.find(nym.name, "pipeworks:storage_tank_") ~= nil) then
-		pym=1
-	end
-
-	if (string.find(nyp.name, "pipeworks:storage_tank_") ~= nil) then
-		pyp=1
-	end
-
--- ...extra devices specified via the function's parameters
--- ...except that this part is not implemented yet
---
--- xxx = nxm, nxp, nym, nyp, nzm, or nzp depending on the direction to check
--- yyy = pxm, pxp, pym, pyp, pzm, or pzp accordingly.
---
---	if string.find(xxx.name, "modname:nodename") ~= nil then
---		yyy = 1
---	end
---
--- for example:
---
---	if string.find(nym.name, "aero:outlet") ~= nil then
---		pym = 1
---	end
---
-
+	core.log("info", "stage 2 returns "..pxm+8*pxp+2*pym+16*pyp+4*pzm+32*pzp..
+		" for nodes surrounding "..core.get_node(pos).name.." at "..core.pos_to_string(pos))
 	return pxm+8*pxp+2*pym+16*pyp+4*pzm+32*pzp
 end
 
 function pipeworks.look_for_stackable_tanks(pos)
-	local tym = minetest.get_node({ x=pos.x  , y=pos.y-1, z=pos.z   })
+	local tym = core.get_node({ x=pos.x  , y=pos.y-1, z=pos.z   })
 
 	if string.find(tym.name, "pipeworks:storage_tank_") ~= nil or
 	    string.find(tym.name, "pipeworks:expansion_tank_") ~= nil then
-		minetest.add_node(pos, { name =  "pipeworks:expansion_tank_0", param2 = tym.param2})
+		core.add_node(pos, { name =  "pipeworks:expansion_tank_0", param2 = tym.param2})
 	end
 end
-

autoplace_tubes.lua

@@ -1,7 +1,7 @@
 -- autorouting for pneumatic tubes
 
 local function is_tube(nodename)
-	return table.contains(pipeworks.tubenodes, nodename)
+	return pipeworks.table_contains(pipeworks.tubenodes, nodename)
 end
 
 --a function for determining which side of the node we are on
@@ -10,7 +10,7 @@ local function nodeside(node, tubedir)
 		node.param2 = 0
 	end
 
-	local backdir = minetest.facedir_to_dir(node.param2)
+	local backdir = core.facedir_to_dir(node.param2)
 	local back = vector.dot(backdir, tubedir)
 	if back == 1 then
 		return "back"
@@ -18,7 +18,7 @@ local function nodeside(node, tubedir)
 		return "front"
 	end
 
-	local topdir = minetest.facedir_to_top_dir(node.param2)
+	local topdir = pipeworks.facedir_to_top_dir(node.param2)
 	local top = vector.dot(topdir, tubedir)
 	if top == 1 then
 		return "top"
@@ -26,7 +26,7 @@ local function nodeside(node, tubedir)
 		return "bottom"
 	end
 
-	local rightdir = minetest.facedir_to_right_dir(node.param2)
+	local rightdir = pipeworks.facedir_to_right_dir(node.param2)
 	local right = vector.dot(rightdir, tubedir)
 	if right == 1 then
 		return "right"
@@ -40,7 +40,7 @@ local tube_table = {[0] = 1, 2, 2, 4, 2, 4, 4, 5, 2, 3, 4, 6, 4, 6, 5, 7, 2, 4,
 local tube_table_facedirs = {[0] = 0, 0, 5, 0, 3, 4, 3, 0, 2, 0, 2, 0, 6, 4, 3, 0, 7, 12, 5, 12, 7, 4, 5, 5, 18, 20, 16, 0, 7, 4, 7, 0, 1, 8, 1, 1, 1, 13, 1, 1, 10, 8, 2, 2, 17, 4, 3, 6, 9, 9, 9, 9, 21, 13, 1, 1, 10, 10, 11, 2, 19, 4, 3, 0}
 local function tube_autoroute(pos)
 	local active = {0, 0, 0, 0, 0, 0}
-	local nctr = minetest.get_node(pos)
+	local nctr = core.get_node(pos)
 	if not is_tube(nctr.name) then return end
 
 	local adjustments = {
@@ -53,34 +53,35 @@ local function tube_autoroute(pos)
 	}
 	-- xm = 1, xp = 2, ym = 3, yp = 4, zm = 5, zp = 6
 
-	local positions = {}
-	local nodes = {}
-	for i, adj in ipairs(adjustments) do
-		positions[i] = vector.add(pos, adj)
-		nodes[i] = minetest.get_node(positions[i])
-	end
+	local adjlist = {} -- this will be used in item_transport
 
-	for i, node in ipairs(nodes) do
-		local idef = minetest.registered_nodes[node.name]
+	for i, adj in ipairs(adjustments) do
+		local position = vector.add(pos, adj)
+		local node = core.get_node(position)
+
+		local idef = core.registered_nodes[node.name]
 		-- handle the tubes themselves
 		if is_tube(node.name) then
 			active[i] = 1
+			table.insert(adjlist, adj)
 		-- handle new style connectors
 		elseif idef and idef.tube and idef.tube.connect_sides then
-			local dir = adjustments[i]
-			if idef.tube.connect_sides[nodeside(node, vector.multiply(dir, -1))] then
+			if idef.tube.connect_sides[nodeside(node, vector.multiply(adj, -1))] then
 				active[i] = 1
+				table.insert(adjlist, adj)
 			end
 		end
 	end
 
+	core.get_meta(pos):set_string("adjlist", core.serialize(adjlist))
+
 	-- all sides checked, now figure which tube to use.
 
-	local nodedef = minetest.registered_nodes[nctr.name]
+	local nodedef = core.registered_nodes[nctr.name]
 	local basename = nodedef.basename
 	if nodedef.style == "old" then
 		local nsurround = ""
-		for i, n in ipairs(active) do
+		for _, n in ipairs(active) do
 			nsurround = nsurround..n
 		end
 		nctr.name = basename.."_"..nsurround
@@ -94,12 +95,12 @@ local function tube_autoroute(pos)
 		nctr.name = basename.."_"..tube_table[s]
 		nctr.param2 = tube_table_facedirs[s]
 	end
-	minetest.swap_node(pos, nctr)
+	core.swap_node(pos, nctr)
 end
 
 function pipeworks.scan_for_tube_objects(pos)
 	for side = 0, 6 do
-		tube_autoroute(vector.add(pos, directions.side_to_dir(side)))
+		tube_autoroute(vector.add(pos, pipeworks.directions.side_to_dir(side)))
 	end
 end
 
@@ -111,7 +112,23 @@ function pipeworks.after_dig(pos)
 	pipeworks.scan_for_tube_objects(pos)
 end
 
-if minetest.get_modpath("mesecons_mvps") then
+-- Screwdriver calls this function before rotating a node.
+-- However, connections must be updated *after* the node is rotated
+-- So, this function does the rotation itself and returns `true`.
+-- (Note: screwdriver already checks for protected areas.)
+
+-- This should only be used for tubes that don't autoconnect.
+-- (For example, one-way tubes.)
+-- Autoconnecting tubes will just revert back to their original state
+-- when they are updated.
+function pipeworks.on_rotate(pos, node, user, mode, new_param2)
+	node.param2 = new_param2
+	core.swap_node(pos, node)
+	pipeworks.scan_for_tube_objects(pos)
+	return true
+end
+
+if core.get_modpath("mesecons_mvps") then
 	mesecon.register_on_mvps_move(function(moved_nodes)
 		for _, n in ipairs(moved_nodes) do
 			pipeworks.scan_for_tube_objects(n.pos)

changelog.txt

@@ -1,91 +1,199 @@
 Changelog
 ---------
 
-2013-01-13: Tubes can transport items now! Namely, I added Novatux/Nore's item 
+
+
+2024-02-26 (SwissalpS)
+set is_ground_content to false for various nodes.
+
+
+
+2023-06-22 (SwissalpS, rubenwardy)
+groups support in recipe. Set recipe as usual via recipe formspec or digilines.
+Autocrafter now resolves matching recipe using groups so that items in input
+inventory are used, that match group and no longer only strictly what user
+has in recipe-inventory
+
+
+
+2023-06-21 (OgelGames, BuckarooBanzay)
+fix autocrafter destroying replacement items (OG)
+remove facedir debugging logs (BB)
+
+
+
+2023-05-28 (SwissalpS)
+support setting 'can_receive' for teleport tubes via digiline
+
+
+
+2023-05-19 (fluxionary, OgelGames)
+log items going through teleport tubes
+
+
+
+2022-12-02 (wsor4035)
+bring back compatibility with mineclone2
+
+
+
+2022-11-11 (OgelGames)
+prevent tp- and sand-tubes from breaking themselves and refactor part of code
+
+2022-09-18 (fluxionary)
+protection checks before break-/placeing a node -> less violation logs
+
+
+2022-08-14 (wsor4035)
+prevent tubes from connecting to furnace front
+
+
+
+2022-08-13 (TurkeyMcMac)
+moved teleport-tube database to mod-storage
+
+
+
+2022-06-23 (S-S-X)
+on_repair tweak, improved repairing tubes
+
+
+* many updates not mentioned here *
+
+
+
+2017-10-19 (thetaepsilon)
+Directional flowables are now implemented.
+All devices for which it is relevant (valve, flow sensor etc.) have been converted so that they only flow on their connecting sides, so pressure propogation now works as expected for these devices when pressure logic is enabled.
+Classic mode continues to be preserved by default as before.
+
+
+
+2017-10-14 (thetaepsilon, VanessaE)
+Node breakers have been updated to not have a tool by default, and determine if the node that they are trying to break can be dug with the tool in it's inventory slot.
+The crafting recipe for the node breakers has been updated, using a new gear crafting item that requires iron instead of mese, which should be a more accessible cost in most cases.
+Existing node breakers in worlds will get their mese pick back if their slot is empty via LBM - the mese pick will show up in the inventory slot so you can reclaim your hard-earned mese crystals.
+Gear item texture and updated node breaker textures provided by VanessaE.
+
+
+
+2017-10-08 (thetaepsilon)
+A lot more of the new flow logic work.
+There are two sub-modes of this now,  non-finite and finite mode.
+Non-finite mode most closely resembles "classic mode", whereas finite mode is more intended for use with mods such as dynamic_liquids which enable water sources to move themselves.
+Everything that was functional in classic mode more or less works correctly now.
+Still TODO:
++ Flow directionality - things like flow sensors and airtight panels will flow in directions that don't make sense from their visuals.
+Possible feature requests:
++ Making tanks and gratings do something useful.
+
+
+
+2017-09-27 (thetaepsilon)
+Start of new flow logic re-implementation.
+This mode is current *very* incomplete, and requires a per-world setting to enable.
+Adds a pressure value stored in all pipe node metadata, and a mechanism to balance it out with nearby nodes on ABM trigger.
+Currently, this inhibits the old behaviour when enabled, and (again WHEN ENABLED) breaks pretty much everything but normal pipes, spigots and pumps.
+For this reason it is far from being intended as the default for some time to come yet.
+What *does* work:
++ Pumps will try to take in water (and removes it!) as long as internal pressure does not exceed a threshold.
+	- a TODO is to make this pressure threshold configurable.
++ Pipes will balance this pressure between themselves, and will slowly average out over time.
++ Spigots will try to make the node beneath them a water source if the pressure is great enough and the existing node is flowing water or air.
+	- This is admittedly of fairly limited use with default water mechanics; those looking for more realistic mechanics might want to look at the dynamic_liquid mod, though that mod comes with it's own caveats (most notably drastic changes to previous worlds...).
+What *does not* work:
++ Flow sensors, valves. Valves in particular currently do not function as a barrier to water's path under the experimental logic.
+	- TODO: internal code to allow this to be overriden.
+
+
+
+*seems this hasn't been updated in a while*
+
+2013-01-13: Tubes can transport items now! Namely, I added Novatux/Nore's item
 transport mod as a default part of this mod, to make tubes do something useful!
 Thanks to Nore and RealBadAngel for the code contributions!
 
-2013-01-05: made storage tanks connect from top/bottom, made storage tank and 
-pipe textures use the ^ combine operator so they can show the actual liquid 
+2013-01-05: made storage tanks connect from top/bottom, made storage tank and
+pipe textures use the ^ combine operator so they can show the actual liquid
 going through the pipes/tanks.
 
-2013-01-04 (a bit later): Made pipes able to carry water! It was just a minor 
-logic error resulting from moving the water flowing code into it's own file 
+2013-01-04 (a bit later): Made pipes able to carry water! It was just a minor
+logic error resulting from moving the water flowing code into it's own file
 when I originally imported it.  Many thanks to Mauvebic for writing it!
 
-2013-01-04: First stage of integrating Mauvebic's water flowing code.  This is 
-experimental and doesn't move water yet - but at least it doesn't break 
+2013-01-04: First stage of integrating Mauvebic's water flowing code.  This is
+experimental and doesn't move water yet - but at least it doesn't break
 anything :-)
 
-2013-01-01: Various minor tweaks to textures, facedir settings, some other 
-stuff.  Changed crafting recipes to account for revamped pumps, valves, etc.  
-Now requires the moreores mod and most recent git (for mese crystal fragments) 
-to craft a pump.  Added a "sealed" entry/exit panel (really just a horizontal 
-pipe with a metal panel overlayed into the middle).  Also, tweaked pipes to 
-always drop the empty ones.  Revamped pumps so that now they should sit in/on 
-liquid and be connected only from the top, relegated grates to decorational- 
-only, added outlet spigot.  Got rid of a few obsolete textures.  Got rid of 
-that whole _x and _z naming thing - now all directional devices (pumps, valves, 
-spigots, tanks) use facedir.  Valves, spigots no longer auto-rotate to find 
+2013-01-01: Various minor tweaks to textures, facedir settings, some other
+stuff.  Changed crafting recipes to account for revamped pumps, valves, etc.
+Now requires the moreores mod and most recent git (for mese crystal fragments)
+to craft a pump.  Added a "sealed" entry/exit panel (really just a horizontal
+pipe with a metal panel overlayed into the middle).  Also, tweaked pipes to
+always drop the empty ones.  Revamped pumps so that now they should sit in/on
+liquid and be connected only from the top, relegated grates to decorational-
+only, added outlet spigot.  Got rid of a few obsolete textures.  Got rid of
+that whole _x and _z naming thing - now all directional devices (pumps, valves,
+spigots, tanks) use facedir.  Valves, spigots no longer auto-rotate to find
 nearby pipes.
 
-2012-09-17: Added test object for pneumatic tube autorouting code, made tubes 
-connect to it and any object that bears groups={tubedevice=1} (connects to any 
+2012-09-17: Added test object for pneumatic tube autorouting code, made tubes
+connect to it and any object that bears groups={tubedevice=1} (connects to any
 side)
 
-2012-09-05: All recipes doubled except for junglegrass -> plastic sheet (since 
+2012-09-05: All recipes doubled except for junglegrass -> plastic sheet (since
 that is derived from home decor)
 
-2012-09-02: Fixed plastic sheeting recipe.  Added crafting recipes for various 
-objects, with options: If homedecor is installed, use the plastic sheeting 
-therein.  If not, we define it manually.  If the Technic mod is installed, 
-don't define any recipes at all.  Also removed the extra "loaded!" messages and 
-tweaked the default pipe alias to point to something that is actually visible 
+2012-09-02: Fixed plastic sheeting recipe.  Added crafting recipes for various
+objects, with options: If homedecor is installed, use the plastic sheeting
+therein.  If not, we define it manually.  If the Technic mod is installed,
+don't define any recipes at all.  Also removed the extra "loaded!" messages and
+tweaked the default pipe alias to point to something that is actually visible
 :-)
 
 2012-09-01:  flattened wielded pipe segment.
 
-2012-08-24: Added square-ish pneumatic tubes with their own autoplace code 
-(does not connect to steel pipes or pipe-oriented devices), then revised their 
-textures shortly after.  Fixed a recursion bug that sometimes caused a stack 
-overflow.  Old pipes were overriding the pipeworks:pipe defintion that belongs 
+2012-08-24: Added square-ish pneumatic tubes with their own autoplace code
+(does not connect to steel pipes or pipe-oriented devices), then revised their
+textures shortly after.  Fixed a recursion bug that sometimes caused a stack
+overflow.  Old pipes were overriding the pipeworks:pipe defintion that belongs
 with the new pipes.
 
-2012-08-22: Added outlet grate, made it participate in autoplace algorithm.  
-Extended storage tank to show fill level in 10% steps (0% to 100%).  Added 
-"expansion tank" that appears if the user stacks tanks upwards.  (Downwards is 
+2012-08-22: Added outlet grate, made it participate in autoplace algorithm.
+Extended storage tank to show fill level in 10% steps (0% to 100%).  Added
+"expansion tank" that appears if the user stacks tanks upwards.  (Downwards is
 not checked).
 
-2012-08-21: Made storage tank participate in autoplace algorithm.  Tuned API a 
-little to allow for more flexible placement.  Re-organized code a bit to allow 
-for some upcoming rules changes.  Made storage tanks' upper/lower fittins and 
+2012-08-21: Made storage tank participate in autoplace algorithm.  Tuned API a
+little to allow for more flexible placement.  Re-organized code a bit to allow
+for some upcoming rules changes.  Made storage tanks' upper/lower fittins and
 intake grate participate in autoplace algorithm.
 
-2012-08-20: Added temporary nodes for storage tank and intake grating, but 
+2012-08-20: Added temporary nodes for storage tank and intake grating, but
 without autoplace.
 
-2012-08-19: Pumps and valves now fully participate in the 
+2012-08-19: Pumps and valves now fully participate in the
 auto-rotate/auto-place algorithm.
 
-2012-08-18: Total rewrite again.  All pipes are now nice and round-looking, and 
-they auto-connect!  Also added temporary nodes for pump and valve (each with an 
-on/off setting - punch to change).  No crafting recipes yet and the pipes still 
+2012-08-18: Total rewrite again.  All pipes are now nice and round-looking, and
+they auto-connect!  Also added temporary nodes for pump and valve (each with an
+on/off setting - punch to change).  No crafting recipes yet and the pipes still
 don't do anything useful yet.  Soon.
 
 2012-08-06:  Moved this changelog off the forum post and into a separate file.
 
-2012-08-05 (multiple updates): Rewrote pipeworks to use loops and tables to 
-create the nodes. Requires far less code now. Added -X, +X, -Y, +Y, -Z, +Z 
-capped stubs and a short centered horizontal segment. Changed node definitions 
-so that the aforementioned "short centered" segment is given on dig/drop.  
-Renamed it to just "pipeworks:pipe" (and pipe_loaded). Added empty/loaded 
-indicator images to the capped ends, removed some redundant comments. Made the 
+2012-08-05 (multiple updates): Rewrote pipeworks to use loops and tables to
+create the nodes. Requires far less code now. Added -X, +X, -Y, +Y, -Z, +Z
+capped stubs and a short centered horizontal segment. Changed node definitions
+so that the aforementioned "short centered" segment is given on dig/drop.
+Renamed it to just "pipeworks:pipe" (and pipe_loaded). Added empty/loaded
+indicator images to the capped ends, removed some redundant comments. Made the
 empty/loaded indication at the capped end more prominent.
 
-2012-07-21: Added screenshot showing pipes as they look now that nodebox 
+2012-07-21: Added screenshot showing pipes as they look now that nodebox
 texture rotation is fixed.
 
-2012-07-18: Changed the mod name and all internals to 'pipeworks' instead of 
+2012-07-18: Changed the mod name and all internals to 'pipeworks' instead of
 'pipes'... after a couple of mistakes :-)
 
 2012-07-12: moved project to github.

chests.lua

@@ -0,0 +1,90 @@
+pipeworks.chests = {}
+
+-- register a chest to connect with pipeworks tubes.
+-- will autoconnect to tubes and add tube inlets to the textures
+-- it is highly recommended to allow the user to change the "splitstacks" int (1 to enable) in the node meta
+-- but that can't be done by this function
+
+-- @param override: additional overrides, such as stuff to modify the node formspec
+-- @param connect_sides: which directions the chests shall connect to
+function pipeworks.override_chest(chestname, override, connect_sides)
+	local old_def = core.registered_nodes[chestname]
+
+	local tube_entry = "^pipeworks_tube_connection_wooden.png"
+	override.tiles = override.tiles or old_def.tiles
+	-- expand the tiles table if it has been shortened
+	if #override.tiles < 6 then
+		for i = #override.tiles, 6 do
+			override.tiles[i] = override.tiles[#override.tiles]
+		end
+	end
+	-- add inlets to the sides that connect to tubes
+	local tile_directions = {"top", "bottom", "right", "left", "back", "front"}
+	for i, direction in ipairs(tile_directions) do
+		if connect_sides[direction] then
+			if type(override.tiles[i]) == "string" then
+				override.tiles[i] = override.tiles[i] .. tube_entry
+			elseif type(override.tiles[i]) == "table" and not override.tiles[i].animation then
+				override.tiles[i].name = override.tiles[i].name .. tube_entry
+			end
+		end
+	end
+
+	local old_after_place_node = override.after_place_node or old_def.after_place_node or function()  end
+	override.after_place_node = function(pos, placer, itemstack, pointed_thing)
+		old_after_place_node(pos, placer, itemstack, pointed_thing)
+		pipeworks.after_place(pos)
+	end
+
+	local old_after_dig = override.after_dig or old_def.after_dig_node or function()  end
+	override.after_dig_node = function(pos, oldnode, oldmetadata, digger)
+		old_after_dig(pos, oldnode, oldmetadata, digger)
+		pipeworks.after_dig(pos, oldnode, oldmetadata, digger)
+	end
+
+	local old_on_rotate
+	if override.on_rotate ~= nil then
+		old_on_rotate = override.on_rotate
+	elseif old_def.on_rotate ~= nil then
+		old_on_rotate = old_def.on_rotate
+	else
+		old_on_rotate = function()  end
+	end
+	-- on_rotate = false -> rotation disabled, no need to update tubes
+	-- everything else: undefined by the most common screwdriver mods
+	if type(old_on_rotate) == "function" then
+		override.on_rotate = function(pos, node, user, mode, new_param2)
+			if old_on_rotate(pos, node, user, mode, new_param2) ~= false then
+				return pipeworks.on_rotate(pos, node, user, mode, new_param2)
+			else
+				return false
+			end
+		end
+	end
+
+	override.tube = {
+		insert_object = function(pos, node, stack, direction)
+			local meta = core.get_meta(pos)
+			local inv = meta:get_inventory()
+			return inv:add_item("main", stack)
+		end,
+		can_insert = function(pos, node, stack, direction)
+			local meta = core.get_meta(pos)
+			local inv = meta:get_inventory()
+			if meta:get_int("splitstacks") == 1 then
+				stack = stack:peek_item(1)
+			end
+			return inv:room_for_item("main", stack)
+		end,
+		input_inventory = "main",
+		connect_sides = connect_sides
+	}
+
+	-- Add the extra groups
+	override.groups = override.groups or old_def.groups or {}
+	override.groups.tubedevice = 1
+	override.groups.tubedevice_receiver = 1
+
+	core.override_item(chestname, override)
+	pipeworks.chests[chestname] = true
+end

common.lua

@@ -1,24 +1,111 @@
-----------------------
--- Vector functions --
-----------------------
+local S = core.get_translator("pipeworks")
 
-function vector.cross(a, b)
-	return {
-		x = a.y * b.z - a.z * b.y,
-		y = a.z * b.x - a.x * b.z,
-		z = a.x * b.y - a.y * b.x
-	}
+-- Random variables
+
+pipeworks.expect_infinite_stacks = true
+if core.get_modpath("unified_inventory") or not core.settings:get_bool("creative_mode") then
+	pipeworks.expect_infinite_stacks = false
 end
 
-function vector.dot(a, b)
-	return a.x * b.x + a.y * b.y + a.z * b.z
+pipeworks.meseadjlist={{x=0,y=0,z=1},{x=0,y=0,z=-1},{x=0,y=1,z=0},{x=0,y=-1,z=0},{x=1,y=0,z=0},{x=-1,y=0,z=0}}
+
+pipeworks.rules_all = {{x=0, y=0, z=1},{x=0, y=0, z=-1},{x=1, y=0, z=0},{x=-1, y=0, z=0},
+		{x=0, y=1, z=1},{x=0, y=1, z=-1},{x=1, y=1, z=0},{x=-1, y=1, z=0},
+		{x=0, y=-1, z=1},{x=0, y=-1, z=-1},{x=1, y=-1, z=0},{x=-1, y=-1, z=0},
+		{x=0, y=1, z=0}, {x=0, y=-1, z=0}}
+
+pipeworks.mesecons_rules={{x=0,y=0,z=1},{x=0,y=0,z=-1},{x=1,y=0,z=0},{x=-1,y=0,z=0},{x=0,y=1,z=0},{x=0,y=-1,z=0}}
+
+local digilines_enabled = core.get_modpath("digilines") ~= nil
+if digilines_enabled and pipeworks.enable_vertical_digilines_connectivity then
+	pipeworks.digilines_rules=digilines.rules.default
+else
+	-- These rules break vertical connectivity to deployers, node breakers, dispensers, and digiline filter injectors
+	-- via digiline conducting tubes. Changing them may break some builds on some servers, so the setting was added
+	-- for server admins to be able to revert to the old "broken" behavior as some builds may use it as a "feature".
+	-- See https://github.com/mt-mods/pipeworks/issues/64
+	pipeworks.digilines_rules={{x=0,y=0,z=1},{x=0,y=0,z=-1},{x=1,y=0,z=0},{x=-1,y=0,z=0},{x=0,y=1,z=0},{x=0,y=-1,z=0}}
+end
+
+pipeworks.liquid_texture = core.registered_nodes[pipeworks.liquids.water.flowing].tiles[1]
+if type(pipeworks.liquid_texture) == "table" then pipeworks.liquid_texture = pipeworks.liquid_texture.name end
+
+pipeworks.button_off   = {text="", texture="pipeworks_button_off.png", addopts="false;false;pipeworks_button_interm.png"}
+pipeworks.button_on    = {text="", texture="pipeworks_button_on.png",  addopts="false;false;pipeworks_button_interm.png"}
+pipeworks.button_base  = "image_button[0,4.3;1,0.6"
+pipeworks.button_label = "label[0.9,4.31;"..S("Allow splitting incoming stacks from tubes").."]"
+
+-- Helper functions
+
+function pipeworks.fix_image_names(table, replacement)
+	local outtable={}
+	for i in ipairs(table) do
+		outtable[i]=string.gsub(table[i], "_XXXXX", replacement)
+	end
+
+	return outtable
+end
+
+local function overlay_tube_texture(texture)
+	-- The texture appears the first time to be colorized as the opaque background.
+	return ("(%s)^[noalpha^[colorize:#dadada^(%s)"):format(texture, texture)
+end
+
+function pipeworks.make_tube_tile(tile)
+	if pipeworks.use_real_entities then
+		return tile
+	elseif type(tile) == "string" then
+		return overlay_tube_texture(tile)
+	else
+		tile = table.copy(tile)
+		if tile.color then
+			-- Won't work 100% of the time, but good enough.
+			tile.name = tile.name .. "^[multiply:" .. core.colorspec_to_colorstring(tile.color)
+			tile.color = nil
+		end
+		tile.name = overlay_tube_texture(tile.name)
+		tile.backface_culling = nil -- The texture is opaque
+		return tile
+	end
+end
+
+function pipeworks.add_node_box(t, b)
+	if not t or not b then return end
+	for i in ipairs(b)
+		do table.insert(t, b[i])
+	end
+end
+
+function pipeworks.may_configure(pos, player)
+	local name = player:get_player_name()
+	local meta = core.get_meta(pos)
+	local owner = meta:get_string("owner")
+
+	if owner ~= "" and owner == name then -- wielders and filters
+		return true
+	end
+	return not core.is_protected(pos, name)
+end
+
+function pipeworks.replace_name(tbl,tr,name)
+	local ntbl={}
+	for key,i in pairs(tbl) do
+		if type(i)=="string" then
+			ntbl[key]=string.gsub(i,tr,name)
+		elseif type(i)=="table" then
+			ntbl[key]=pipeworks.replace_name(i,tr,name)
+		else
+			ntbl[key]=i
+		end
+	end
+	return ntbl
 end
 
 -----------------------
 -- Facedir functions --
 -----------------------
 
-function minetest.facedir_to_top_dir(facedir)
+function pipeworks.facedir_to_top_dir(facedir)
 	return 	({[0] = {x =  0, y =  1, z =  0},
 	                {x =  0, y =  0, z =  1},
 	                {x =  0, y =  0, z = -1},
@@ -28,14 +115,15 @@ function minetest.facedir_to_top_dir(facedir)
 		[math.floor(facedir / 4)]
 end
 
-function minetest.facedir_to_right_dir(facedir)
+function pipeworks.facedir_to_right_dir(facedir)
 	return vector.cross(
-		minetest.facedir_to_top_dir(facedir),
-		minetest.facedir_to_dir(facedir)
+		pipeworks.facedir_to_top_dir(facedir),
+		core.facedir_to_dir(facedir)
 	)
 end
 
-directions = {}
+local directions = {}
+pipeworks.directions = directions
 function directions.side_to_dir(side)
 	return ({[0] = vector.new(),
 		vector.new( 0,  1,  0),
@@ -52,30 +140,11 @@ function directions.dir_to_side(dir)
 	return ({6, 2, 4, 0, 3, 1, 5})[c]
 end
 
-----------------------
--- String functions --
-----------------------
-
---[[function string.split(str, sep)
-	local fields = {}
-	local index = 1
-	local expr = "([^"..sep.."])+"
-	string.gsub(str, expr, function(substring)
-		fields[index] = substring
-		index = index + 1
-	end)
-	return fields
-end]]
-
-function string.startswith(str, substr)
-	return str:sub(1, substr:len()) == substr
-end
-
 ---------------------
 -- Table functions --
 ---------------------
 
-function table.contains(tbl, element)
+function pipeworks.table_contains(tbl, element)
 	for _, elt in pairs(tbl) do
 		if elt == element then
 			return true
@@ -84,19 +153,18 @@ function table.contains(tbl, element)
 	return false
 end
 
-function table.extend(tbl, tbl2)
-	local index = #tbl + 1
-	for _, elt in ipairs(tbl2) do
-		tbl[index] = elt
-		index = index + 1
+function pipeworks.table_extend(tbl, tbl2)
+	local oldlength = #tbl
+	for i = 1,#tbl2 do
+		tbl[oldlength + i] = tbl2[i]
 	end
 end
 
-function table.recursive_replace(tbl, pattern, replace_with)
+function pipeworks.table_recursive_replace(tbl, pattern, replace_with)
 	if type(tbl) == "table" then
 		local tbl2 = {}
 		for key, value in pairs(tbl) do
-			tbl2[key] = table.recursive_replace(value, pattern, replace_with)
+			tbl2[key] = pipeworks.table_recursive_replace(value, pattern, replace_with)
 		end
 		return tbl2
 	elseif type(tbl) == "string" then
@@ -110,11 +178,12 @@ end
 -- Formspec functions --
 ------------------------
 
-fs_helpers = {}
+local fs_helpers = {}
+pipeworks.fs_helpers = fs_helpers
 function fs_helpers.on_receive_fields(pos, fields)
-	local meta = minetest.get_meta(pos)
-	for field, value in pairs(fields) do
-		if field:startswith("fs_helpers_cycling:") then
+	local meta = core.get_meta(pos)
+	for field in pairs(fields) do
+		if field:match("^fs_helpers_cycling:") then
 			local l = field:split(":")
 			local new_value = tonumber(l[2])
 			local meta_name = l[3]
@@ -139,19 +208,97 @@ function fs_helpers.cycling_button(meta, base, meta_name, values)
 		text = val
 	end
 	local field = "fs_helpers_cycling:"..new_value..":"..meta_name
-	return base..";"..(texture_name and texture_name..";" or "")..field..";"..minetest.formspec_escape(text)..(addopts and ";"..addopts or "").."]"
+	return base..";"..(texture_name and texture_name..";" or "")..field..";"..core.formspec_escape(text)..(addopts and ";"..addopts or "").."]"
+end
+
+function fs_helpers.get_inv(y)
+	local fs = {}
+	if core.get_modpath("i3") then
+		local inv_x = i3.settings.legacy_inventory and 0.75 or 0.22
+		local inv_y = (y + 0.4) or 6.9
+		local size, spacing = 1, 0.1
+		local hotbar_len = i3.settings.hotbar_len or (i3.settings.legacy_inventory and 8 or 9)
+		local inv_size = i3.settings.inv_size or (hotbar_len * 4)
+
+		table.insert(fs, "style_type[box;colors=#77777710,#77777710,#777,#777]")
+
+		for i = 0, hotbar_len - 1 do
+			table.insert(fs, "box["..(i * size + inv_x + (i * spacing))..","..inv_y..";"..size..","..size..";]")
+		end
+
+		table.insert(fs, "style_type[list;size="..size..";spacing="..spacing.."]")
+		table.insert(fs, "list[current_player;main;"..inv_x..","..inv_y..";"..hotbar_len..",1;]")
+
+		table.insert(fs, "style_type[box;colors=#666]")
+		for i=0, 2 do
+			for j=0, hotbar_len - 1 do
+				table.insert(fs, "box["..0.2+(j*0.1)+(j*size)..","..(inv_y+size+spacing+0.05)+(i*0.1)+(i*size)..";"..size..","..size..";]")
+			end
+		end
+
+		table.insert(fs, "style_type[list;size="..size..";spacing="..spacing.."]")
+		table.insert(fs, "list[current_player;main;"..inv_x..","..(inv_y + 1.15)..";"..hotbar_len..","..(inv_size / hotbar_len)..";"..hotbar_len.."]")
+	elseif core.get_modpath("mcl_formspec") then
+		local inv_x = 0.22
+		local inv_y = (y + 0.4) or 6.9
+		local size, spacing = 1, 0.1
+		local hotbar_len = 9
+		local inv_size = hotbar_len * 4
+
+		table.insert(fs, "style_type[box;colors=#77777710,#77777710,#777,#777]")
+
+		for i = 0, hotbar_len - 1 do
+			table.insert(fs, "box["..(i * size + inv_x + (i * spacing))..","..inv_y..";"..size..","..size..";]")
+		end
+
+		table.insert(fs, "style_type[list;size="..size..";spacing="..spacing.."]")
+		table.insert(fs, "list[current_player;main;"..inv_x..","..inv_y..";"..hotbar_len..",1;]")
+
+		table.insert(fs, "style_type[box;colors=#666]")
+		for i=0, 2 do
+			for j=0, hotbar_len - 1 do
+				table.insert(fs, "box["..0.2+(j*0.1)+(j*size)..","..(inv_y+size+spacing+0.05)+(i*0.1)+(i*size)..";"..size..","..size..";]")
+			end
+		end
+
+		table.insert(fs, "style_type[list;size="..size..";spacing="..spacing.."]")
+		table.insert(fs, "list[current_player;main;"..inv_x..","..(inv_y + 1.15)..";"..hotbar_len..","..(inv_size / hotbar_len)..";"..hotbar_len.."]")
+	else
+		table.insert(fs, "list[current_player;main;0.22,"..y..";8,4;]")
+	end
+
+	return table.concat(fs, "")
+end
+
+function fs_helpers.get_prepends(size)
+	local prepend = {}
+
+	if core.get_modpath("i3") then
+		prepend = {
+			"no_prepend[]",
+			"bgcolor[black;neither]",
+			"background9[0,0;"..size..";i3_bg_full.png;false;10]",
+			"style_type[button;border=false;bgimg=[combine:16x16^[noalpha^[colorize:#6b6b6b]",
+			"listcolors[#0000;#ffffff20]"
+		}
+	end
+
+	return table.concat(prepend, "")
 end
 
 ---------
 -- Env --
 ---------
 
-function minetest.load_position(pos)
+function pipeworks.load_position(pos)
 	if pos.x < -30912 or pos.y < -30912 or pos.z < -30912 or
 	   pos.x >  30927 or pos.y >  30927 or pos.z >  30927 then return end
-	if minetest.get_node_or_nil(pos) then
+	if core.get_node_or_nil(pos) then
 		return
 	end
-	local vm = minetest.get_voxel_manip()
+	local vm = core.get_voxel_manip()
 	vm:read_from_map(pos, pos)
 end
+
+-- Kept for compatibility with old mods
+pipeworks.create_fake_player = fakelib.create_player

compat-chests.lua

@@ -0,0 +1,184 @@
+-- this bit of code overrides the default chests from common games (mtg, hades, minclone*) to be
+-- compatible with pipeworks. Where possible, it overrides their formspec to add a splitstacks switch
+
+local fs_helpers = pipeworks.fs_helpers
+
+-- formspec helper to add the splitstacks switch
+local function add_pipeworks_switch(formspec, pos)
+	-- based on the sorting tubes
+	formspec = formspec ..
+			fs_helpers.cycling_button(
+				core.get_meta(pos),
+				pipeworks.button_base,
+				"splitstacks",
+				{
+					pipeworks.button_off,
+					pipeworks.button_on
+				}
+			)..pipeworks.button_label
+	return formspec
+end
+
+-- helper to add the splitstacks switch to a node-formspec
+local function update_node_formspec(pos)
+	local meta = core.get_meta(pos)
+	local old_fs = meta:get_string("formspec")
+	local new_fs = add_pipeworks_switch(old_fs, pos)
+	meta:set_string("formspec", new_fs)
+end
+
+
+if core.get_modpath("default") then
+	-- add the pipeworks switch into the default chest formspec
+	local old_get_chest_formspec = default.chest.get_chest_formspec
+	-- luacheck: ignore 122
+	default.chest.get_chest_formspec = function(pos)
+		local old_fs = old_get_chest_formspec(pos)
+		local node = core.get_node(pos)
+		-- not all chests using this formspec necessary connect to pipeworks
+		if pipeworks.chests[node.name] then
+			local new_fs = add_pipeworks_switch(old_fs, pos)
+			return new_fs
+		else
+			return old_fs
+		end
+	end
+
+	-- get the fields from the chest formspec, we can do this bc. newest functions are called first
+	-- https://github.com/luanti-org/luanti/blob/d4b10db998ebeb689b3d27368e30952a42169d03/doc/lua_api.md?plain=1#L5840
+	core.register_on_player_receive_fields(function(player, formname, fields)
+		if fields.quit or formname ~= "default:chest" then
+			return
+		end
+		local pn = player:get_player_name()
+		local chest_open = default.chest.open_chests[pn]
+		if not chest_open or not chest_open.pos then
+			-- chest already closed before formspec
+			return
+		end
+		local pos = chest_open.pos
+		local node = core.get_node(pos)
+		if pipeworks.chests[node.name] and pipeworks.may_configure(pos, player) then
+			-- Pipeworks Switch
+			fs_helpers.on_receive_fields(pos, fields)
+			core.show_formspec(pn,
+				"default:chest",
+				default.chest.get_chest_formspec(pos))
+		end
+		-- Do NOT return true here, the callback from default still needs to run
+		return false
+	end)
+
+	local connect_sides = {left = 1, right = 1, back = 1, bottom = 1, top = 1}
+	local connect_sides_open = {left = 1, right = 1, back = 1, bottom = 1}
+
+	pipeworks.override_chest("default:chest", {}, connect_sides)
+	pipeworks.override_chest("default:chest_open", {}, connect_sides_open)
+	pipeworks.override_chest("default:chest_locked", {}, connect_sides)
+	pipeworks.override_chest("default:chest_locked_open", {}, connect_sides_open)
+elseif core.get_modpath("hades_chests") then
+	local chest_colors = {"", "white", "grey", "dark_grey", "black", "blue", "cyan", "dark_green", "green", "magenta",
+						  "orange", "pink", "red", "violet", "yellow"}
+	for _, color in ipairs(chest_colors) do
+		local chestname = (color == "" and "hades_chests:chest")
+				or "hades_chests:chest_" .. color
+		local chestname_protected = (color == "" and "hades_chests:chest_locked")
+				or "hades_chests:chest_" .. color .. "_locked"
+		local old_def = core.registered_nodes[chestname]
+
+		-- chest formspec-creation functions are local, we need to find other ways
+		-- normal chests use node formspecs, we can hack into these
+		local old_on_construct = old_def.on_construct
+		local override = {
+			on_construct = function(pos)
+				old_on_construct(pos)
+				update_node_formspec(pos)
+			end,
+			on_receive_fields = function(pos, formname, fields, player)
+				if not fields.quit and pipeworks.may_configure(pos, player) then
+					-- Pipeworks Switch
+					fs_helpers.on_receive_fields(pos, fields)
+					update_node_formspec(pos)
+				end
+			end,
+			-- chest's on_rotate is "simple", but we assumed the api from the mtg screwdriver mod
+			-- this will keep the same behavior, but supports the code above
+			on_rotate = screwdriver.rotate_simple
+		}
+
+		-- locked chests uses local functions to create their formspec - we need to copy these
+		-- https://codeberg.org/Wuzzy/Hades_Revisited/src/branch/master/mods/hades_chests/init.lua
+		local function get_locked_chest_formspec(pos)
+			local spos = pos.x .. "," .. pos.y .. "," ..pos.z
+			local formspec =
+				"size[10,9]"..
+				"list[nodemeta:".. spos .. ";main;0,0;10,4;]"..
+				"list[current_player;main;0,5;10,4;]"..
+				"listring[]"..
+				"background9[8,8;10,9;hades_chests_chestui.png;true;8]"
+
+			-- change from pipeworks
+			local new_fs = add_pipeworks_switch(formspec, pos)
+			return new_fs
+		end
+
+		local function has_locked_chest_privilege(meta, player)
+			local name = player:get_player_name()
+			if name ~= meta:get_string("owner") and not core.check_player_privs(name, "protection_bypass") then
+				return false
+			end
+			return true
+		end
+
+		-- store, which chest a formspec submission belongs to
+		-- {player1 = pos1, player2 = pos2, ...}
+		local open_chests = {}
+		core.register_on_leaveplayer(function(player)
+			open_chests[player:get_player_name()] = nil
+		end)
+
+		local override_protected = {
+			on_rightclick = function(pos, node, clicker)
+				local meta = core.get_meta(pos)
+				if has_locked_chest_privilege(meta, clicker) then
+					core.show_formspec(
+							clicker:get_player_name(),
+							"hades_chests:chest_locked",
+							get_locked_chest_formspec(pos)
+					)
+					open_chests[clicker:get_player_name()] = pos
+				else
+					core.sound_play({ name = "hades_chests_locked", gain = 0.3 }, { max_hear_distance = 10 }, true)
+				end
+			end,
+			on_rotate = screwdriver.rotate_simple
+		}
+
+		-- get the fields from the chest formspec, we can do this bc. newest functions are called first
+		-- https://github.com/luanti-org/luanti/blob/d4b10db998ebeb689b3d27368e30952a42169d03/doc/lua_api.md?plain=1#L5840
+		core.register_on_player_receive_fields(function(player, formname, fields)
+			if fields.quit or formname ~= "hades_chests:chest_locked" then
+				return
+			end
+			local pn = player:get_player_name()
+			local pos = open_chests[pn]
+			if pos and pipeworks.may_configure(pos, player) then
+				-- Pipeworks Switch
+				fs_helpers.on_receive_fields(pos, fields)
+				core.show_formspec(pn, "hades_chests:chest_locked", get_locked_chest_formspec(pos))
+			end
+			-- Do NOT return true here, the callback from hades still needs to run (if they add one)
+			return false
+		end)
+
+		local connect_sides = {left = 1, right = 1, back = 1, bottom = 1, top = 1}
+		pipeworks.override_chest(chestname, override, connect_sides)
+		pipeworks.override_chest(chestname_protected, override_protected, connect_sides)
+	end
+elseif core.get_modpath("mcl_barrels") then
+	-- TODO: bring splitstacks switch in the formspec
+	-- with the current implementation of mcl_barrels this would mean to duplicate a lot of code from there...
+	local connect_sides = {left = 1, right = 1, back = 1, front = 1, bottom = 1}
+	pipeworks.override_chest("mcl_barrels:barrel_closed", {}, connect_sides)
+	pipeworks.override_chest("mcl_barrels:barrel_open", {}, connect_sides)
+end

compat-furnaces.lua

@@ -0,0 +1,128 @@
+-- this file is basically a modified copy of
+-- minetest_game/mods/default/furnaces.lua
+
+local def--, def_active
+if core.get_modpath("default") then
+	def = table.copy(core.registered_nodes["default:furnace"])
+	--def_active = table.copy(core.registered_nodes["default:furnace_active"])
+elseif core.get_modpath("hades_furnaces") then
+	def = table.copy(core.registered_nodes["hades_furnaces:furnace"])
+	--def_active = table.copy(core.registered_nodes["hades_furnaces:furnace_active"])
+end
+
+local tube_entry = "^pipeworks_tube_connection_stony.png"
+
+local groups = def.groups
+groups["tubedevice"] = 1
+groups["tubedevice_receiver"] = 1
+local groups_active = table.copy(groups)
+groups_active["not_in_creative_inventory"] = 1
+
+--
+-- Node definitions
+--
+
+local override = {
+	tiles = {
+		"default_furnace_top.png"..tube_entry,
+		"default_furnace_bottom.png"..tube_entry,
+		"default_furnace_side.png"..tube_entry,
+		"default_furnace_side.png"..tube_entry,
+		"default_furnace_side.png"..tube_entry,
+		"default_furnace_front.png"
+	},
+	groups = groups,
+	tube = {
+		insert_object = function(pos, node, stack, direction)
+			local meta = core.get_meta(pos)
+			local inv = meta:get_inventory()
+			local timer = core.get_node_timer(pos)
+			if not timer:is_started() then
+				timer:start(1.0)
+			end
+			if direction.y == 1 then
+				return inv:add_item("fuel", stack)
+			else
+				return inv:add_item("src", stack)
+			end
+		end,
+		can_insert = function(pos,node,stack,direction)
+			local meta = core.get_meta(pos)
+			local inv = meta:get_inventory()
+			if direction.y == 1 then
+				return inv:room_for_item("fuel", stack)
+			else
+				if meta:get_int("split_material_stacks") == 1 then
+					stack = stack:peek_item(1)
+				end
+				return inv:room_for_item("src", stack)
+			end
+		end,
+		input_inventory = "dst",
+		connect_sides = {left = 1, right = 1, back = 1, bottom = 1, top = 1}
+	},
+
+	after_place_node = pipeworks.after_place,
+	after_dig_node = pipeworks.after_dig,
+	on_rotate = pipeworks.on_rotate
+}
+
+local override_active = {
+	tiles = {
+		"default_furnace_top.png"..tube_entry,
+		"default_furnace_bottom.png"..tube_entry,
+		"default_furnace_side.png"..tube_entry,
+		"default_furnace_side.png"..tube_entry,
+		"default_furnace_side.png"..tube_entry,
+		{
+			image = "default_furnace_front_active.png",
+			backface_culling = false,
+			animation = {
+				type = "vertical_frames",
+				aspect_w = 16,
+				aspect_h = 16,
+				length = 1.5
+			},
+		}
+	},
+	groups = groups_active,
+	tube = {
+		insert_object = function(pos,node,stack,direction)
+			local meta = core.get_meta(pos)
+			local inv = meta:get_inventory()
+			local timer = core.get_node_timer(pos)
+			if not timer:is_started() then
+				timer:start(1.0)
+			end
+			if direction.y == 1 then
+				return inv:add_item("fuel", stack)
+			else
+				return inv:add_item("src", stack)
+			end
+		end,
+		can_insert = function(pos, node, stack, direction)
+			local meta = core.get_meta(pos)
+			local inv = meta:get_inventory()
+			if direction.y == 1 then
+				return inv:room_for_item("fuel", stack)
+			else
+				return inv:room_for_item("src", stack)
+			end
+		end,
+		input_inventory = "dst",
+		connect_sides = {left = 1, right = 1, back = 1, bottom = 1, top = 1}
+	},
+
+	after_place_node = pipeworks.after_place,
+	after_dig_node = pipeworks.after_dig,
+	on_rotate = pipeworks.on_rotate
+}
+
+if core.get_modpath("default") then
+	core.override_item("default:furnace", override)
+	core.override_item("default:furnace_active", override_active)
+elseif core.get_modpath("hades_furnaces") then
+	core.override_item("hades_furnaces:furnace", override)
+	core.override_item("hades_furnaces:furnace_active", override_active)
+end
+

compat.lua

@@ -1,153 +0,0 @@
--- this bit of code modifies the default chests and furnaces to be compatible
--- with pipeworks.
-
-minetest.override_item("default:furnace", {
-	tiles = {
-		"default_furnace_top.png^pipeworks_tube_connection_stony.png",
-		"default_furnace_bottom.png^pipeworks_tube_connection_stony.png",
-		"default_furnace_side.png^pipeworks_tube_connection_stony.png",
-		"default_furnace_side.png^pipeworks_tube_connection_stony.png",
-		"default_furnace_side.png^pipeworks_tube_connection_stony.png",
-		"default_furnace_front.png"
-	},
-	groups = {cracky = 2, tubedevice = 1, tubedevice_receiver = 1},
-	tube = {
-		insert_object = function(pos, node, stack, direction)
-			local meta = minetest.get_meta(pos)
-			local inv = meta:get_inventory()
-			local timer = minetest.get_node_timer(pos)
-			if not timer:is_started() then
-				timer:start(1.0)
-			end
-			if direction.y == 1 then
-				return inv:add_item("fuel",stack)
-			else
-				return inv:add_item("src",stack)
-			end
-		end,
-		can_insert = function(pos,node,stack,direction)
-			local meta = minetest.get_meta(pos)
-			local inv = meta:get_inventory()
-			if direction.y == 1 then
-				return inv:room_for_item("fuel", stack)
-			else
-				return inv:room_for_item("src", stack)
-			end
-		end,
-		input_inventory = "dst",
-		connect_sides = {left = 1, right = 1, back = 1, front = 1, bottom = 1, top = 1}
-	},
-	after_place_node = pipeworks.after_place,
-	after_dig_node = pipeworks.after_dig
-})
-
-minetest.override_item("default:furnace_active", {
-	tiles = {
-		"default_furnace_top.png^pipeworks_tube_connection_stony.png",
-		"default_furnace_bottom.png^pipeworks_tube_connection_stony.png",
-		"default_furnace_side.png^pipeworks_tube_connection_stony.png",
-		"default_furnace_side.png^pipeworks_tube_connection_stony.png",
-		"default_furnace_side.png^pipeworks_tube_connection_stony.png",
-		{
-			image = "default_furnace_front_active.png",
-			backface_culling = false,
-			animation = {
-				type = "vertical_frames",
-				aspect_w = 16,
-				aspect_h = 16,
-				length = 1.5
-			},
-		}
-	},
-	groups = {cracky = 2, tubedevice = 1, tubedevice_receiver = 1, not_in_creative_inventory = 1},
-	tube = {
-		insert_object = function(pos,node,stack,direction)
-			local meta = minetest.get_meta(pos)
-			local inv = meta:get_inventory()
-			local timer = minetest.get_node_timer(pos)
-			if not timer:is_started() then
-				timer:start(1.0)
-			end
-			if direction.y == 1 then
-				return inv:add_item("fuel", stack)
-			else
-				return inv:add_item("src", stack)
-			end
-		end,
-		can_insert = function(pos, node, stack, direction)
-			local meta = minetest.get_meta(pos)
-			local inv = meta:get_inventory()
-			if direction.y == 1 then
-				return inv:room_for_item("fuel", stack)
-			else
-				return inv:room_for_item("src", stack)
-			end
-		end,
-		input_inventory = "dst",
-		connect_sides = {left = 1, right = 1, back = 1, front = 1, bottom = 1, top = 1}
-	},
-	after_place_node = pipeworks.after_place,
-	after_dig_node = pipeworks.after_dig
-})
-
-minetest.override_item("default:chest", {
-	tiles = {
-		"default_chest_top.png^pipeworks_tube_connection_wooden.png",
-		"default_chest_top.png^pipeworks_tube_connection_wooden.png",
-		"default_chest_side.png^pipeworks_tube_connection_wooden.png",
-		"default_chest_side.png^pipeworks_tube_connection_wooden.png",
-		"default_chest_side.png^pipeworks_tube_connection_wooden.png",
-		"default_chest_front.png"
-	},
-	groups = {choppy = 2, oddly_breakable_by_hand = 2, tubedevice = 1, tubedevice_receiver = 1},
-	tube = {
-		insert_object = function(pos, node, stack, direction)
-			local meta = minetest.get_meta(pos)
-			local inv = meta:get_inventory()
-			return inv:add_item("main", stack)
-		end,
-		can_insert = function(pos, node, stack, direction)
-			local meta = minetest.get_meta(pos)
-			local inv = meta:get_inventory()
-			return inv:room_for_item("main", stack)
-		end,
-		input_inventory = "main",
-		connect_sides = {left = 1, right = 1, back = 1, front = 1, bottom = 1, top = 1}
-	},
-	after_place_node = pipeworks.after_place,
-	after_dig_node = pipeworks.after_dig
-})
-
-minetest.override_item("default:chest_locked", {
-	tiles = {
-		"default_chest_top.png^pipeworks_tube_connection_wooden.png",
-		"default_chest_top.png^pipeworks_tube_connection_wooden.png",
-		"default_chest_side.png^pipeworks_tube_connection_wooden.png",
-		"default_chest_side.png^pipeworks_tube_connection_wooden.png",
-		"default_chest_side.png^pipeworks_tube_connection_wooden.png",
-		"default_chest_lock.png"
-	},
-	groups = {choppy = 2, oddly_breakable_by_hand = 2, tubedevice = 1, tubedevice_receiver = 1},
-	tube = {
-		insert_object = function(pos, node, stack, direction)
-			local meta = minetest.get_meta(pos)
-			local inv = meta:get_inventory()
-			return inv:add_item("main", stack)
-		end,
-		can_insert = function(pos, node, stack, direction)
-			local meta = minetest.get_meta(pos)
-			local inv = meta:get_inventory()
-			return inv:room_for_item("main", stack)
-		end,
-		connect_sides = {left = 1, right = 1, back = 1, front = 1, bottom = 1, top = 1}
-	},
-	after_place_node = function (pos, placer)
-		local meta = minetest.get_meta(pos)
-		meta:set_string("owner", placer:get_player_name() or "")
-		meta:set_string("infotext", "Locked Chest (owned by "..
-		meta:get_string("owner")..")")
-		pipeworks.after_place(pos)
-	end,
-	after_dig_node = pipeworks.after_dig
-})
-

crafts.lua

@@ -1,151 +1,318 @@
 -- Crafting recipes for pipes
+local materials = xcompat.materials
 
-minetest.register_craft( {
-        output = "pipeworks:pipe_1_empty 12",
-        recipe = {
-                { "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" },
-                { "", "", "" },
-                { "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" }
-        },
-})
-
-minetest.register_craft( {
-        output = "pipeworks:spigot 3",
-        recipe = {
-                { "pipeworks:pipe_1_empty", "" },
-                { "", "pipeworks:pipe_1_empty" },
-        },
-})
-
-minetest.register_craft( {
-	output = "pipeworks:entry_panel_empty 2",
+core.register_craft( {
+	output = "pipeworks:pipe_1_empty 12",
 	recipe = {
-		{ "", "default:steel_ingot", "" },
-		{ "", "pipeworks:pipe_1_empty", "" },
-		{ "", "default:steel_ingot", "" },
+			{ materials.steel_ingot, materials.steel_ingot, materials.steel_ingot },
+			{ "", "", "" },
+			{ materials.steel_ingot, materials.steel_ingot, materials.steel_ingot }
 	},
 })
 
+core.register_craft( {
+	output = "pipeworks:straight_pipe_empty 3",
+	recipe = {
+			{ "pipeworks:pipe_1_empty", "pipeworks:pipe_1_empty", "pipeworks:pipe_1_empty" },
+	},
+})
+
+core.register_craft( {
+	output = "pipeworks:spigot 3",
+	recipe = {
+			{ "pipeworks:pipe_1_empty", "" },
+			{ "", "pipeworks:pipe_1_empty" },
+	},
+})
+
+core.register_craft( {
+output = "pipeworks:entry_panel_empty 2",
+recipe = {
+	{ "", materials.steel_ingot, "" },
+	{ "", "pipeworks:pipe_1_empty", "" },
+	{ "", materials.steel_ingot, "" },
+},
+})
+
 -- Various ancillary pipe devices
 
-minetest.register_craft( {
-        output = "pipeworks:pump_off 2",
-        recipe = {
-                { "default:stone", "default:steel_ingot", "default:stone" },
-                { "default:copper_ingot", "default:mese_crystal_fragment", "default:copper_ingot" },
-                { "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" }
-        },
+core.register_craft( {
+	output = "pipeworks:pump_off 2",
+	recipe = {
+			{ materials.stone, materials.steel_ingot, materials.stone },
+			{ materials.copper_ingot, materials.mese_crystal_fragment, materials.copper_ingot },
+			{ materials.steel_ingot, materials.steel_ingot, materials.steel_ingot }
+	},
 })
 
-minetest.register_craft( {
-        output = "pipeworks:valve_off_empty 2",
-        recipe = {
-                { "", "group:stick", "" },
-                { "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" },
-                { "", "default:steel_ingot", "" }
-        },
+core.register_craft( {
+	output = "pipeworks:valve_off_empty 2",
+	recipe = {
+			{ "", "group:stick", "" },
+			{ materials.steel_ingot, materials.steel_ingot, materials.steel_ingot },
+			{ "", materials.steel_ingot, "" }
+	},
 })
 
-minetest.register_craft( {
-        output = "pipeworks:storage_tank_0 2",
-        recipe = {
-                { "", "default:steel_ingot", "default:steel_ingot" },
-                { "default:steel_ingot", "default:glass", "default:steel_ingot" },
-                { "default:steel_ingot", "default:steel_ingot", "" }
-        },
+core.register_craft( {
+	output = "pipeworks:storage_tank_0 2",
+	recipe = {
+			{ "", materials.steel_ingot, materials.steel_ingot },
+			{ materials.steel_ingot, materials.glass, materials.steel_ingot },
+			{ materials.steel_ingot, materials.steel_ingot, "" }
+	},
 })
 
-minetest.register_craft( {
-        output = "pipeworks:grating 2",
-        recipe = {
-                { "default:steel_ingot", "", "default:steel_ingot" },
-                { "", "pipeworks:pipe_1_empty", "" },
-                { "default:steel_ingot", "", "default:steel_ingot" }
-        },
+core.register_craft( {
+	output = "pipeworks:grating 2",
+	recipe = {
+			{ materials.steel_ingot, "", materials.steel_ingot },
+			{ "", "pipeworks:pipe_1_empty", "" },
+			{ materials.steel_ingot, "", materials.steel_ingot }
+	},
 })
 
-minetest.register_craft( {
-        output = "pipeworks:flow_sensor_empty 2",
-        recipe = {
-                { "pipeworks:pipe_1_empty", "mesecons:mesecon", "pipeworks:pipe_1_empty" },
-        },
+core.register_craft( {
+	output = "pipeworks:flow_sensor_empty 2",
+	recipe = {
+			{ "pipeworks:pipe_1_empty", "mesecons:mesecon", "pipeworks:pipe_1_empty" },
+	},
 })
 
-minetest.register_craft( {
-        output = "pipeworks:fountainhead 2",
-        recipe = {
-                { "pipeworks:pipe_1_empty" },
-				{ "pipeworks:pipe_1_empty" }
-        },
+core.register_craft( {
+	output = "pipeworks:fountainhead 2",
+	recipe = {
+			{ "pipeworks:pipe_1_empty" },
+			{ "pipeworks:pipe_1_empty" }
+	},
 })
 
+-- injectors
 
--- Crafting recipes for pneumatic tubes
+core.register_craft( {
+	output = "pipeworks:filter 2",
+	recipe = {
+			{ materials.steel_ingot, materials.steel_ingot, "basic_materials:plastic_sheet" },
+			{ "group:stick", materials.mese_crystal, "basic_materials:plastic_sheet" },
+			{ materials.steel_ingot, materials.steel_ingot, "basic_materials:plastic_sheet" }
+	},
+})
 
--- If homedecor is not installed, we need to register its crafting chain for
--- plastic sheeting so that pipeworks remains compatible with it.
+core.register_craft( {
+	output = "pipeworks:mese_filter 2",
+	recipe = {
+			{ materials.steel_ingot, materials.steel_ingot, "basic_materials:plastic_sheet" },
+			{ "group:stick", materials.mese, "basic_materials:plastic_sheet" },
+			{ materials.steel_ingot, materials.steel_ingot, "basic_materials:plastic_sheet" }
+	},
+})
 
-if minetest.get_modpath("homedecor") == nil then
-
-	minetest.register_craftitem(":homedecor:oil_extract", {
-		    description = "Oil extract",
-		    inventory_image = "homedecor_oil_extract.png",
-	})
-
-	minetest.register_craftitem(":homedecor:paraffin", {
-		    description = "Unprocessed paraffin",
-		    inventory_image = "homedecor_paraffin.png",
-	})
-
-	minetest.register_alias("homedecor:plastic_base", "homedecor:paraffin")
-
-	minetest.register_craftitem(":homedecor:plastic_sheeting", {
-		    description = "Plastic sheet",
-		    inventory_image = "homedecor_plastic_sheeting.png",
-	})
-
-	minetest.register_craft({
-		type = "shapeless",
-		output = "homedecor:oil_extract 4",
+if core.get_modpath("digilines") then
+	core.register_craft( {
+		output = "pipeworks:digiline_filter 2",
 		recipe = {
-			"group:leaves",
-			"group:leaves",
-			"group:leaves",
-			"group:leaves",
-			"group:leaves",
-			"group:leaves"
-		}
-	})
-
-	minetest.register_craft({
-		    type = "cooking",
-		    output = "homedecor:paraffin",
-		    recipe = "homedecor:oil_extract",
-	})
-
-	minetest.register_craft({
-		    type = "cooking",
-		    output = "homedecor:plastic_sheeting",
-		    recipe = "homedecor:paraffin",
-	})
-
-	minetest.register_craft({
-		    type = "fuel",
-		    recipe = "homedecor:oil_extract",
-		    burntime = 30,
-	})
-
-	minetest.register_craft({
-		    type = "fuel",
-		    recipe = "homedecor:paraffin",
-		    burntime = 30,
-	})
-
-	minetest.register_craft({
-		    type = "fuel",
-		    recipe = "homedecor:plastic_sheeting",
-		    burntime = 30,
+			{ materials.steel_ingot, materials.steel_ingot, "basic_materials:plastic_sheet" },
+			{ "group:stick", "digilines:wire_std_00000000", "basic_materials:plastic_sheet" },
+			{ materials.steel_ingot, materials.steel_ingot, "basic_materials:plastic_sheet" }
+		},
 	})
 end
 
+-- other
 
+core.register_craft( {
+	output = "pipeworks:autocrafter 2",
+	recipe = {
+			{ materials.steel_ingot, materials.mese_crystal, materials.steel_ingot },
+			{ "basic_materials:plastic_sheet", materials.steel_ingot, "basic_materials:plastic_sheet" },
+			{ materials.steel_ingot, materials.mese_crystal, materials.steel_ingot }
+	},
+})
+
+core.register_craft( {
+	output = "pipeworks:steel_pane_embedded_tube 1",
+	recipe = {
+		{ "", materials.steel_ingot, "" },
+		{ "", "pipeworks:tube_1", "" },
+		{ "", materials.steel_ingot, "" }
+	},
+})
+
+core.register_craft({
+	output = "pipeworks:trashcan",
+	recipe = {
+		{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
+		{ materials.steel_ingot, "", materials.steel_ingot },
+		{ materials.steel_ingot, materials.steel_ingot, materials.steel_ingot },
+	},
+})
+
+core.register_craft( {
+	output = "pipeworks:teleport_tube_1 2",
+	recipe = {
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
+			{ materials.desert_stone, materials.mese, materials.desert_stone },
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
+	},
+})
+
+if pipeworks.enable_priority_tube then
+	core.register_craft( {
+		output = "pipeworks:priority_tube_1 6",
+		recipe = {
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
+			{ materials.gold_ingot, "", materials.gold_ingot },
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
+		},
+	})
+end
+
+if pipeworks.enable_accelerator_tube then
+	core.register_craft( {
+		output = "pipeworks:accelerator_tube_1 2",
+		recipe = {
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
+			{ materials.mese_crystal_fragment, materials.steel_ingot, materials.mese_crystal_fragment },
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
+		},
+	})
+end
+
+if pipeworks.enable_crossing_tube then
+	core.register_craft( {
+		output = "pipeworks:crossing_tube_1 5",
+		recipe = {
+			{ "", "pipeworks:tube_1", "" },
+			{ "pipeworks:tube_1", "pipeworks:tube_1", "pipeworks:tube_1" },
+			{ "", "pipeworks:tube_1", "" }
+		},
+	})
+end
+
+if pipeworks.enable_one_way_tube then
+	core.register_craft({
+		output = "pipeworks:one_way_tube 2",
+		recipe = {
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
+			{ "group:stick", materials.mese_crystal, "basic_materials:plastic_sheet" },
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
+		},
+	})
+end
+
+if pipeworks.enable_mese_tube then
+	core.register_craft( {
+		output = "pipeworks:mese_tube_000000 2",
+		recipe = {
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
+			{ "", materials.mese_crystal, "" },
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
+		},
+	})
+
+	core.register_craft( {
+		type = "shapeless",
+		output = "pipeworks:mese_tube_000000",
+		recipe = {
+			"pipeworks:tube_1",
+			materials.mese_crystal_fragment,
+			materials.mese_crystal_fragment,
+			materials.mese_crystal_fragment,
+			materials.mese_crystal_fragment,
+		},
+	})
+end
+
+if pipeworks.enable_item_tags and pipeworks.enable_tag_tube then
+	core.register_craft( {
+		output = "pipeworks:tag_tube_000000 2",
+		recipe = {
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
+			{ materials.book, materials.mese_crystal, materials.book },
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
+		},
+	})
+
+	core.register_craft( {
+		type = "shapeless",
+		output = "pipeworks:tag_tube_000000",
+		recipe = {
+			"pipeworks:mese_tube_000000",
+			materials.book,
+		},
+	})
+end
+
+if pipeworks.enable_sand_tube then
+	core.register_craft( {
+		output = "pipeworks:sand_tube_1 2",
+		recipe = {
+			{"basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet"},
+			{"group:sand",                 "group:sand",                 "group:sand"},
+			{"basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet"}
+		},
+	})
+
+	core.register_craft( {
+		output = "pipeworks:sand_tube_1",
+		recipe = {
+			{"group:sand", "pipeworks:tube_1", "group:sand"},
+		},
+	})
+end
+
+if pipeworks.enable_mese_sand_tube then
+	core.register_craft( {
+		output = "pipeworks:mese_sand_tube_1 2",
+		recipe = {
+			{"basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
+			{"group:sand",				 materials.mese_crystal,	   "group:sand" },
+			{"basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
+		},
+	})
+
+	core.register_craft( {
+		type = "shapeless",
+		output = "pipeworks:mese_sand_tube_1",
+		recipe = {
+			"pipeworks:sand_tube_1",
+			materials.mese_crystal_fragment,
+			materials.mese_crystal_fragment,
+			materials.mese_crystal_fragment,
+			materials.mese_crystal_fragment,
+		},
+	})
+end
+
+if pipeworks.enable_deployer then
+	core.register_craft({
+		output = "pipeworks:deployer_off",
+		recipe = {
+			{ "group:wood",	materials.chest,	"group:wood"	},
+			{ materials.stone, "mesecons:piston",  materials.stone },
+			{ materials.stone, "mesecons:mesecon", materials.stone },
+		}
+	})
+end
+
+if pipeworks.enable_dispenser then
+	core.register_craft({
+		output = "pipeworks:dispenser_off",
+		recipe = {
+			{ materials.desert_sand, materials.chest,	materials.desert_sand },
+			{ materials.stone,	   "mesecons:piston",  materials.stone	   },
+			{ materials.stone,	   "mesecons:mesecon", materials.stone	  },
+		}
+	})
+end
+
+if pipeworks.enable_node_breaker then
+	core.register_craft({
+		output = "pipeworks:nodebreaker_off",
+		recipe = {
+			{ "basic_materials:gear_steel", "basic_materials:gear_steel",   "basic_materials:gear_steel"	},
+			{ materials.stone, "mesecons:piston",   materials.stone },
+			{ "group:wood",	"mesecons:mesecon",  "group:wood" },
+		}
+	})
+end

decorative_tubes.lua

@@ -1,83 +0,0 @@
-local straight = function(pos, node, velocity, stack) return {velocity} end
-
-minetest.register_node("pipeworks:steel_block_embedded_tube", {
-	description = "Airtight steelblock embedded tube",
-	tiles = {
-		"default_steel_block.png", "default_steel_block.png",
-		"default_steel_block.png", "default_steel_block.png",
-		"default_steel_block.png^pipeworks_tube_connection_metallic.png",
-		"default_steel_block.png^pipeworks_tube_connection_metallic.png",
-		},
-	paramtype = "light",
-	paramtype2 = "facedir",
-	groups = {cracky=1, oddly_breakable_by_hand = 1, tubedevice = 1},
-	legacy_facedir_simple = true,
-	sounds = default.node_sound_stone_defaults(),
-	tube = {
-		connect_sides = {front = 1, back = 1,},
-		priority = 50,
-		can_go = straight,
-		can_insert = function(pos, node, stack, direction)
-			local dir = minetest.facedir_to_dir(node.param2)
-			return vector.equals(dir, direction) or vector.equals(vector.multiply(dir, -1), direction)
-		end,
-	},
-	after_place_node = pipeworks.after_place,
-	after_dig_node = pipeworks.after_dig,
-})
-
-minetest.register_craft( {
-	output = "pipeworks:steel_block_embedded_tube 1",
-	recipe = {
-		{ "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" },
-		{ "default:steel_ingot", "pipeworks:tube_1", "default:steel_ingot" },
-		{ "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" }
-	},
-})
-
-local pane_box = {
-	type = "fixed",
-	fixed = {
-		{ -9/64, -9/64, -8/16, 9/64, 9/64, 8/16 }, -- tube
-		{ -8/16, -8/16, -1/16, 8/16, 8/16, 1/16 } -- pane
-	}
-}
-minetest.register_node("pipeworks:steel_pane_embedded_tube", {
-	drawtype = "nodebox",
-	description = "Airtight panel embedded tube ",
-	tiles = {
-		"pipeworks_pane_embedded_tube_sides.png^[transformR90",
-		"pipeworks_pane_embedded_tube_sides.png^[transformR90",
-		"pipeworks_pane_embedded_tube_sides.png",
-		"pipeworks_pane_embedded_tube_sides.png",
-		"pipeworks_pane_embedded_tube_ends.png", "pipeworks_pane_embedded_tube_ends.png",
-		},
-	node_box = pane_box,
-	selection_box = pane_box,
-	collision_box = pane_box,
-	paramtype = "light",
-	paramtype2 = "facedir",
-	groups = {cracky=1, oddly_breakable_by_hand = 1, tubedevice = 1},
-	legacy_facedir_simple = true,
-	sounds = default.node_sound_stone_defaults(),
-	tube = {
-		connect_sides = {front = 1, back = 1,},
-		priority = 50,
-		can_go = straight,
-		can_insert = function(pos, node, stack, direction)
-			local dir = minetest.facedir_to_dir(node.param2)
-			return vector.equals(dir, direction) or vector.equals(vector.multiply(dir, -1), direction)
-		end,
-	},
-	after_place_node = pipeworks.after_place,
-	after_dig_node = pipeworks.after_dig,
-})
-
-minetest.register_craft( {
-	output = "pipeworks:steel_pane_embedded_tube 1",
-	recipe = {
-		{ "", "default:steel_ingot", "" },
-		{ "", "pipeworks:tube_1", "" },
-		{ "", "default:steel_ingot", "" }
-	},
-})

default_settings.lua

@@ -0,0 +1,76 @@
+-- Various settings
+
+local prefix = "pipeworks_"
+
+local settings = {
+	enable_pipes = true,
+	enable_item_tags = true,
+	enable_tag_tube = true,
+	enable_lowpoly = false,
+	enable_autocrafter = true,
+	enable_deployer = true,
+	enable_dispenser = true,
+	enable_node_breaker = true,
+	enable_teleport_tube = true,
+	enable_pipe_devices = true,
+	enable_redefines = true,
+	enable_mese_tube = true,
+	enable_detector_tube = true,
+	enable_digiline_detector_tube = true,
+	enable_conductor_tube = true,
+	enable_digiline_conductor_tube = true,
+	enable_accelerator_tube = true,
+	enable_crossing_tube = true,
+	enable_sand_tube = true,
+	enable_mese_sand_tube = true,
+	enable_one_way_tube = true,
+	enable_priority_tube = true,
+	enable_lua_tube = true,
+	enable_cyclic_mode = true,
+	drop_on_routing_fail = false,
+	delete_item_on_clearobject = true,
+	use_real_entities = true,
+	entity_update_interval = 0,
+	enable_vertical_digilines_connectivity = false,
+}
+
+pipeworks.toggles = {}
+-- documentation for toggles controlling pressure logic features.
+-- do not edit this file directly;
+-- instead, create pipeworks_settings.txt in your world directory,
+-- and copy the uncommented lines from the block comments below into it.
+--[[
+-- flow logic implementation.
+-- set to one of the following strings.
+-- "classic": classic mode written by VanessaE
+-- "pressure": pressure metadata based, written by thetaepsilon.
+--	has caveats such as water speed issues though.
+-- setting to nil inhibits all flow logic, useful for debugging ABM crashes,
+-- or for rendering the pipes purely decorative.
+]]
+pipeworks.toggles.pipe_mode = "classic"
+--[[
+-- force-enable finite water handling mode.
+-- this changes the way that water node placement is handled;
+-- volume will always be preserved,
+-- and water is assumed to move itself downwards.
+-- nil (the default) means autodetect from installed finite liquid mods,
+-- true is force-on, false is force-off.
+-- note that you should NOT normally explicitly set this to true/false,
+-- unless the mod you want this for is not covered by auto-detection
+-- (please see autodetect-finite-water.lua).
+-- please file an issue if you have a finite water mod not covered there,
+-- and feel it necessary to explicitly set this toggle
+pipeworks.toggles.finite_water = nil
+]]
+
+for name, value in pairs(settings) do
+	local setting_type = type(value)
+	if setting_type == "boolean" then
+		pipeworks[name] = core.settings:get_bool(prefix..name, value)
+	elseif setting_type == "number" then
+		pipeworks[name] = tonumber(core.settings:get(prefix..name) or value)
+	else
+		pipeworks[name] = value
+	end
+end

default_settings.txt

@@ -1,23 +0,0 @@
--- Various settings
-
-pipeworks.enable_pipes = true
-pipeworks.enable_autocrafter = true
-pipeworks.enable_deployer = true
-pipeworks.enable_dispenser = true
-pipeworks.enable_node_breaker = true
-pipeworks.enable_teleport_tube = true
-pipeworks.enable_pipe_devices = true
-pipeworks.enable_redefines = true
-pipeworks.enable_mese_tube = true
-pipeworks.enable_detector_tube = true
-pipeworks.enable_digiline_detector_tube = true
-pipeworks.enable_conductor_tube = true
-pipeworks.enable_accelerator_tube = true
-pipeworks.enable_crossing_tube = true
-pipeworks.enable_sand_tube = true
-pipeworks.enable_mese_sand_tube = true
-pipeworks.enable_one_way_tube = true
-pipeworks.enable_priority_tube = true
-pipeworks.enable_cyclic_mode = true
-
-pipeworks.delete_item_on_clearobject = true

depends.txt

@@ -1,4 +0,0 @@
-default
-mesecons?
-mesecons_mvps?
-digilines?

description.txt

@@ -1 +0,0 @@
-This mod uses nodeboxes to supply a complete set of 3D pipes and tubes, along devices that work with them.

devices.lua

@@ -1,9 +1,97 @@
+local S = core.get_translator("pipeworks")
+local new_flow_logic_register = pipeworks.flowables.register
+
+local texture_alpha_mode = core.features.use_texture_alpha_string_modes
+
+local polys = ""
+if pipeworks.enable_lowpoly then polys = "_lowpoly" end
+
+-- rotation handlers
+
+function pipeworks.fix_after_rotation(pos, node, user, mode, new_param2)
+
+	if string.find(node.name, "spigot") then new_param2 = new_param2 % 4 end
+
+	local newnode = string.gsub(node.name, "_on", "_off")
+	core.swap_node(pos, { name = newnode, param2 = new_param2 })
+	pipeworks.scan_for_pipe_objects(pos)
+
+	return true
+end
+
+function pipeworks.rotate_on_place(itemstack, placer, pointed_thing)
+
+	local playername = placer:get_player_name()
+	if not core.is_protected(pointed_thing.under, playername)
+	   and not core.is_protected(pointed_thing.above, playername) then
+
+		local node = core.get_node(pointed_thing.under)
+
+		if (not placer:get_player_control().sneak)
+		  and core.registered_nodes[node.name]
+		  and core.registered_nodes[node.name].on_rightclick then
+			core.registered_nodes[node.name].on_rightclick(pointed_thing.under,
+				node, placer, itemstack, pointed_thing)
+
+		else
+
+			local pitch = -placer:get_look_vertical()
+			local above = pointed_thing.above
+			local under = pointed_thing.under
+			local fdir = core.dir_to_facedir(placer:get_look_dir())
+			local undernode = core.get_node(under)
+			local uname = undernode.name
+			local isabove = (above.x == under.x) and (above.z == under.z) and (pitch > 0)
+			local pos1 = above
+
+			-- check if the object should be turned vertically
+			if above.x == under.x
+				and above.z == under.z
+				and (
+				  string.find(uname, "pipeworks:pipe_")
+				  or string.find(uname, "pipeworks:storage_")
+				  or string.find(uname, "pipeworks:expansion_")
+				  or ( string.find(uname, "pipeworks:grating") and not isabove )
+				  or ( string.find(uname, "pipeworks:pump_") and not isabove )
+
+				  or (
+						( string.find(uname, "pipeworks:valve")
+						  or string.find(uname, "pipeworks:entry_panel")
+						  or string.find(uname, "pipeworks:flow_sensor") )
+						and core.facedir_to_dir(undernode.param2).y ~= 0 )
+					)
+			then
+				fdir = 17
+			end
+
+			if core.registered_nodes[uname]
+			  and core.registered_nodes[uname]["buildable_to"] then
+				pos1 = under
+			end
+
+			if core.registered_nodes[core.get_node(pos1).name]
+			  and not core.registered_nodes[core.get_node(pos1).name]["buildable_to"] then return end
+
+			local placednode = string.gsub(itemstack:get_name(), "_loaded", "_empty")
+			placednode = string.gsub(placednode, "_on", "_off")
+
+			core.swap_node(pos1, {name = placednode, param2 = fdir })
+			pipeworks.scan_for_pipe_objects(pos1)
+
+			if not pipeworks.expect_infinite_stacks then
+				itemstack:take_item()
+			end
+		end
+	end
+	return itemstack
+end
+
 -- List of devices that should participate in the autoplace algorithm
 
 local pipereceptor_on = nil
 local pipereceptor_off = nil
 
-if minetest.get_modpath("mesecons") then
+if core.get_modpath("mesecons") then
 	pipereceptor_on = {
 		receptor = {
 			state = mesecon.state.on,
@@ -19,6 +107,7 @@ if minetest.get_modpath("mesecons") then
 	}
 end
 
+--[[
 local pipes_devicelist = {
 	"pump",
 	"valve",
@@ -34,30 +123,38 @@ local pipes_devicelist = {
 	"storage_tank_9",
 	"storage_tank_10"
 }
+--]]
 
 -- Now define the nodes.
 
 local states = { "on", "off" }
-local dgroups = ""
 
 for s in ipairs(states) do
 
+	local dgroups
 	if states[s] == "off" then
-		dgroups = {snappy=3, pipe=1}
+		dgroups = {snappy=3, pipe=1, dig_generic = 4, axey=1, handy=1, pickaxey=1}
 	else
-		dgroups = {snappy=3, pipe=1, not_in_creative_inventory=1}
+		dgroups = {snappy=3, pipe=1, not_in_creative_inventory=1, dig_generic = 4, axey=1, handy=1, pickaxey=1}
 	end
 
-	minetest.register_node("pipeworks:pump_"..states[s], {
-		description = "Pump/Intake Module",
+	local pumpname = "pipeworks:pump_"..states[s]
+	core.register_node(pumpname, {
+		description = S("Pump/Intake Module"),
 		drawtype = "mesh",
-		mesh = "pipeworks_pump.obj",
+		mesh = "pipeworks_pump"..polys..".obj",
 		tiles = { "pipeworks_pump_"..states[s]..".png" },
+		use_texture_alpha = texture_alpha_mode and "clip" or true,
 		paramtype = "light",
 		paramtype2 = "facedir",
 		groups = dgroups,
-		sounds = default.node_sound_wood_defaults(),
+		is_ground_content = false,
+		_mcl_hardness=0.8,
+		_sound_def = {
+			key = "node_sound_metal_defaults",
+		},
 		walkable = true,
+		pipe_connections = { top = 1 },
 		after_place_node = function(pos)
 			pipeworks.scan_for_pipe_objects(pos)
 		end,
@@ -67,103 +164,135 @@ for s in ipairs(states) do
 		drop = "pipeworks:pump_off",
 		mesecons = {effector = {
 			action_on = function (pos, node)
-				minetest.add_node(pos,{name="pipeworks:pump_on", param2 = node.param2}) 
+				core.swap_node(pos,{name="pipeworks:pump_on", param2 = node.param2})
 			end,
 			action_off = function (pos, node)
-				minetest.add_node(pos,{name="pipeworks:pump_off", param2 = node.param2}) 
+				core.swap_node(pos,{name="pipeworks:pump_off", param2 = node.param2})
 			end
 		}},
-		on_punch = function(pos, node, puncher)
-			local fdir = minetest.get_node(pos).param2
-			minetest.add_node(pos, { name = "pipeworks:pump_"..states[3-s], param2 = fdir })
-		end
+		on_rightclick = function(pos, node, clicker, itemstack, pointed_thing)
+			local fdir = node.param2
+			core.swap_node(pos, { name = "pipeworks:pump_"..states[3-s], param2 = fdir })
+		end,
+		on_rotate = screwdriver and screwdriver.rotate_simple or nil
 	})
-	
-	minetest.register_node("pipeworks:valve_"..states[s].."_empty", {
-		description = "Valve",
+
+	-- FIXME: this currently assumes that pumps can only rotate around the fixed axis pointing Y+.
+	new_flow_logic_register.directional_vertical_fixed(pumpname, true)
+	local pump_drive = 4
+	if states[s] ~= "off" then
+		new_flow_logic_register.intake_simple(pumpname, pump_drive)
+	end
+
+
+
+	local nodename_valve_empty = "pipeworks:valve_"..states[s].."_empty"
+	core.register_node(nodename_valve_empty, {
+		description = S("Valve"),
 		drawtype = "mesh",
-		mesh = "pipeworks_valve_"..states[s]..".obj",
+		mesh = "pipeworks_valve_"..states[s]..polys..".obj",
 		tiles = { "pipeworks_valve.png" },
 		sunlight_propagates = true,
 		paramtype = "light",
 		paramtype2 = "facedir",
 		selection_box = {
-	             	type = "fixed",
-			fixed = { -8/16, -4/16, -5/16, 8/16, 5/16, 5/16 }
+			type = "fixed",
+			fixed = { -5/16, -4/16, -8/16, 5/16, 5/16, 8/16 }
 		},
 		collision_box = {
-	             	type = "fixed",
-			fixed = { -8/16, -4/16, -5/16, 8/16, 5/16, 5/16 }
+			type = "fixed",
+			fixed = { -5/16, -4/16, -8/16, 5/16, 5/16, 8/16 }
 		},
 		groups = dgroups,
-		sounds = default.node_sound_wood_defaults(),
+		is_ground_content = false,
+		_mcl_hardness=0.8,
+		_sound_def = {
+			key = "node_sound_metal_defaults",
+		},
 		walkable = true,
-		after_place_node = function(pos)
-			pipeworks.scan_for_pipe_objects(pos)
-		end,
+		on_place = pipeworks.rotate_on_place,
 		after_dig_node = function(pos)
 			pipeworks.scan_for_pipe_objects(pos)
 		end,
-	drop = "pipeworks:valve_off_empty",
+		drop = "pipeworks:valve_off_empty",
 		mesecons = {effector = {
 			action_on = function (pos, node)
-				minetest.add_node(pos,{name="pipeworks:valve_on_empty", param2 = node.param2}) 
+				core.swap_node(pos,{name="pipeworks:valve_on_empty", param2 = node.param2})
 			end,
 			action_off = function (pos, node)
-				minetest.add_node(pos,{name="pipeworks:valve_off_empty", param2 = node.param2}) 
+				core.swap_node(pos,{name="pipeworks:valve_off_empty", param2 = node.param2})
 			end
 		}},
-		on_punch = function(pos, node, puncher)
-			local fdir = minetest.get_node(pos).param2
-			minetest.add_node(pos, { name = "pipeworks:valve_"..states[3-s].."_empty", param2 = fdir })
-		end
+		on_rightclick = function(pos, node, clicker, itemstack, pointed_thing)
+			local fdir = node.param2
+			core.swap_node(pos, { name = "pipeworks:valve_"..states[3-s].."_empty", param2 = fdir })
+		end,
+		on_rotate = pipeworks.fix_after_rotation
 	})
+	-- only register flow logic for the "on" ABM.
+	-- this means that the off state automatically blocks flow by not participating in the balancing operation.
+	if states[s] ~= "off" then
+		new_flow_logic_register.directional_horizonal_rotate(nodename_valve_empty, true)
+	end
 end
+pipeworks.ui_cat_tube_list[#pipeworks.ui_cat_tube_list+1] = "pipeworks:pump_off"
+pipeworks.ui_cat_tube_list[#pipeworks.ui_cat_tube_list+1] = "pipeworks:valve_off_empty"
 
-minetest.register_node("pipeworks:valve_on_loaded", {
-	description = "Valve",
+local nodename_valve_loaded = "pipeworks:valve_on_loaded"
+core.register_node(nodename_valve_loaded, {
+	description = S("Valve"),
 	drawtype = "mesh",
-	mesh = "pipeworks_valve_on.obj",
+	mesh = "pipeworks_valve_on"..polys..".obj",
 	tiles = { "pipeworks_valve.png" },
 	sunlight_propagates = true,
 	paramtype = "light",
 	paramtype2 = "facedir",
 	selection_box = {
-             	type = "fixed",
-		fixed = { -8/16, -4/16, -5/16, 8/16, 5/16, 5/16 }
+		type = "fixed",
+		fixed = { -5/16, -4/16, -8/16, 5/16, 5/16, 8/16 }
 	},
 	collision_box = {
-             	type = "fixed",
-		fixed = { -8/16, -4/16, -5/16, 8/16, 5/16, 5/16 }
+		type = "fixed",
+		fixed = { -5/16, -4/16, -8/16, 5/16, 5/16, 8/16 }
+	},
+	groups = {snappy=3, pipe=1, not_in_creative_inventory=1, dig_generic = 4, axey=1, handy=1, pickaxey=1},
+	is_ground_content = false,
+	_mcl_hardness=0.8,
+	_sound_def = {
+		key = "node_sound_metal_defaults",
 	},
-	groups = {snappy=3, pipe=1, not_in_creative_inventory=1},
-	sounds = default.node_sound_wood_defaults(),
 	walkable = true,
-	after_place_node = function(pos)
-		pipeworks.scan_for_pipe_objects(pos)
-	end,
+	on_place = pipeworks.rotate_on_place,
 	after_dig_node = function(pos)
 		pipeworks.scan_for_pipe_objects(pos)
 	end,
 	drop = "pipeworks:valve_off_empty",
 	mesecons = {effector = {
 		action_on = function (pos, node)
-			minetest.add_node(pos,{name="pipeworks:valve_on_empty", param2 = node.param2}) 
+			core.swap_node(pos,{name="pipeworks:valve_on_empty", param2 = node.param2})
 		end,
 		action_off = function (pos, node)
-			minetest.add_node(pos,{name="pipeworks:valve_off_empty", param2 = node.param2}) 
+			core.swap_node(pos,{name="pipeworks:valve_off_empty", param2 = node.param2})
 		end
 	}},
-	on_punch = function(pos, node, puncher)
-		local fdir = minetest.get_node(pos).param2
-		minetest.add_node(pos, { name = "pipeworks:valve_off_empty", param2 = fdir })
-	end
+	on_rightclick = function(pos, node, clicker, itemstack, pointed_thing)
+		local fdir = node.param2
+		core.swap_node(pos, { name = "pipeworks:valve_off_empty", param2 = fdir })
+	end,
+	on_rotate = pipeworks.fix_after_rotation
 })
+-- register this the same as the on-but-empty variant, so existing nodes of this type work also.
+-- note that as new_flow_logic code does not distinguish empty/full in node states,
+-- right-clicking a "loaded" valve (becoming an off valve) then turning it on again will yield a on-but-empty valve,
+-- but the flow logic will still function.
+-- thus under new_flow_logic this serves as a kind of migration.
+new_flow_logic_register.directional_horizonal_rotate(nodename_valve_loaded, true)
 
 -- grating
 
-minetest.register_node("pipeworks:grating", {
-	description = "Decorative grating",
+-- FIXME: should this do anything useful in the new flow logic?
+core.register_node("pipeworks:grating", {
+	description = S("Decorative grating"),
 	tiles = {
 		"pipeworks_grating_top.png",
 		"pipeworks_grating_sides.png",
@@ -172,32 +301,52 @@ minetest.register_node("pipeworks:grating", {
 		"pipeworks_grating_sides.png",
 		"pipeworks_grating_sides.png"
 	},
+	use_texture_alpha = texture_alpha_mode and "clip" or true,
+	drawtype = "nodebox",
+	node_box = {
+		type = "fixed",
+		fixed = { -0.49, -0.49, -0.49, 0.49, 0.5, 0.49 }
+	},
 	sunlight_propagates = true,
 	paramtype = "light",
-	groups = {snappy=3, pipe=1},
-	sounds = default.node_sound_wood_defaults(),
+	groups = {snappy=3, pipe=1, dig_generic = 4, axey=1, handy=1, pickaxey=1},
+	is_ground_content = false,
+	_mcl_hardness=0.8,
+	_sound_def = {
+		key = "node_sound_metal_defaults",
+	},
 	walkable = true,
+	pipe_connections = { top = 1 },
 	after_place_node = function(pos)
 		pipeworks.scan_for_pipe_objects(pos)
 	end,
 	after_dig_node = function(pos)
 		pipeworks.scan_for_pipe_objects(pos)
 	end,
+	on_rotate = false
 })
+pipeworks.ui_cat_tube_list[#pipeworks.ui_cat_tube_list+1] = "pipeworks:grating"
 
 -- outlet spigot
 
-minetest.register_node("pipeworks:spigot", {
-	description = "Spigot outlet",
+local nodename_spigot_empty = "pipeworks:spigot"
+core.register_node(nodename_spigot_empty, {
+	description = S("Spigot outlet"),
 	drawtype = "mesh",
-	mesh = "pipeworks_spigot.obj",
+	mesh = "pipeworks_spigot"..polys..".obj",
 	tiles = { "pipeworks_spigot.png" },
 	sunlight_propagates = true,
 	paramtype = "light",
 	paramtype2 = "facedir",
-	groups = {snappy=3, pipe=1},
-	sounds = default.node_sound_wood_defaults(),
+	groups = {snappy=3, pipe=1, dig_generic = 4, axey=1, handy=1, pickaxey=1},
+	is_ground_content = false,
+	_mcl_hardness=0.8,
+	_sound_def = {
+		key = "node_sound_metal_defaults",
+	},
 	walkable = true,
+	pipe_connections = { left=1, right=1, front=1, back=1,
+						 left_param2 = 3, right_param2 = 1, front_param2 = 2, back_param2 = 0 },
 	after_place_node = function(pos)
 		pipeworks.scan_for_pipe_objects(pos)
 	end,
@@ -211,32 +360,34 @@ minetest.register_node("pipeworks:spigot", {
 	collision_box = {
 		type = "fixed",
 		fixed = { -2/16, -6/16, -2/16, 2/16, 2/16, 8/16 }
-	}
+	},
+	on_rotate = pipeworks.fix_after_rotation
 })
 
-minetest.register_node("pipeworks:spigot_pouring", {
-	description = "Spigot outlet",
+local nodename_spigot_loaded = "pipeworks:spigot_pouring"
+core.register_node(nodename_spigot_loaded, {
+	description = S("Spigot outlet"),
 	drawtype = "mesh",
-	mesh = "pipeworks_spigot_pouring.obj",
+	mesh = "pipeworks_spigot_pouring"..polys..".obj",
 	tiles = {
-		{
-			name = "default_water_flowing_animated.png",
-			animation = {
-				type = "vertical_frames",
-				aspect_w = 16,
-				aspect_h = 16,
-				length = 0.8,
-			},
-		},
+		core.registered_nodes[pipeworks.liquids.water.source].tiles[1],
 		{ name = "pipeworks_spigot.png" }
 	},
+	use_texture_alpha = texture_alpha_mode and "blend" or true,
 	sunlight_propagates = true,
 	paramtype = "light",
 	paramtype2 = "facedir",
-	groups = {snappy=3, pipe=1, not_in_creative_inventory=1},
-	sounds = default.node_sound_wood_defaults(),
+	groups = {snappy=3, pipe=1, not_in_creative_inventory=1, dig_generic = 4, axey=1, handy=1, pickaxey=1},
+	is_ground_content = false,
+	_mcl_hardness=0.8,
+	_sound_def = {
+		key = "node_sound_metal_defaults",
+	},
 	walkable = true,
+	pipe_connections = { left=1, right=1, front=1, back=1,
+						 left_param2 = 3, right_param2 = 1, front_param2 = 2, back_param2 = 0 },
 	after_place_node = function(pos)
+		core.set_node(pos, { name = "pipeworks:spigot", param2 = core.get_node(pos).param2 })
 		pipeworks.scan_for_pipe_objects(pos)
 	end,
 	after_dig_node = function(pos)
@@ -251,7 +402,21 @@ minetest.register_node("pipeworks:spigot_pouring", {
 		fixed = { -2/16, -6/16, -2/16, 2/16, 2/16, 8/16 }
 	},
 	drop = "pipeworks:spigot",
+	on_rotate = pipeworks.fix_after_rotation
 })
+pipeworks.ui_cat_tube_list[#pipeworks.ui_cat_tube_list+1] = "pipeworks:spigot"
+
+-- new flow logic does not currently distinguish between these two visual states.
+-- register both so existing flowing spigots continue to work (even if the visual doesn't match the spigot's behaviour).
+new_flow_logic_register.directional_horizonal_rotate(nodename_spigot_empty, false)
+new_flow_logic_register.directional_horizonal_rotate(nodename_spigot_loaded, false)
+local spigot_upper = 1.0
+local spigot_lower = 1.0
+local spigot_neighbours={{x=0, y=-1, z=0}}
+new_flow_logic_register.output_simple(nodename_spigot_empty, spigot_upper, spigot_lower, spigot_neighbours)
+new_flow_logic_register.output_simple(nodename_spigot_loaded, spigot_upper, spigot_lower, spigot_neighbours)
+
+
 
 -- sealed pipe entry/exit (horizontal pipe passing through a metal
 -- wall, for use in places where walls should look like they're airtight)
@@ -264,193 +429,175 @@ local panel_cbox = {
 	}
 }
 
-minetest.register_node("pipeworks:entry_panel_empty", {
-	description = "Airtight Pipe entry/exit",
+local nodename_panel_empty = "pipeworks:entry_panel_empty"
+core.register_node(nodename_panel_empty, {
+	description = S("Airtight Pipe entry/exit"),
 	drawtype = "mesh",
-	mesh = "pipeworks_entry_panel.obj",
+	mesh = "pipeworks_entry_panel"..polys..".obj",
 	tiles = { "pipeworks_entry_panel.png" },
 	paramtype = "light",
 	paramtype2 = "facedir",
-	groups = {snappy=3, pipe=1},
-	sounds = default.node_sound_wood_defaults(),
+	groups = {snappy=3, pipe=1, dig_generic = 4, axey=1, handy=1, pickaxey=1},
+	is_ground_content = false,
+	_mcl_hardness=0.8,
+	_sound_def = {
+		key = "node_sound_metal_defaults",
+	},
 	walkable = true,
-	after_place_node = function(pos)
-		pipeworks.scan_for_pipe_objects(pos)
-	end,
+	on_place = pipeworks.rotate_on_place,
 	after_dig_node = function(pos)
 		pipeworks.scan_for_pipe_objects(pos)
 	end,
 	selection_box = panel_cbox,
 	collision_box = panel_cbox,
-	on_place = function(itemstack, placer, pointed_thing)
-		local playername = placer:get_player_name()
-		if not minetest.is_protected(pointed_thing.under, playername) 
-		   and not minetest.is_protected(pointed_thing.above, playername) then
-			local node = minetest.get_node(pointed_thing.under)
-
-			if not minetest.registered_nodes[node.name]
-			    or not minetest.registered_nodes[node.name].on_rightclick then
-				local pitch = placer:get_look_pitch()
-				local above = pointed_thing.above
-				local under = pointed_thing.under
-				local fdir = minetest.dir_to_facedir(placer:get_look_dir())
-				local undernode = minetest.get_node(under)
-				local abovenode = minetest.get_node(above)
-				local uname = undernode.name
-				local aname = abovenode.name
-				local isabove = (above.x == under.x) and (above.z == under.z) and (pitch > 0)
-				local pos1 = above
-
-				if above.x == under.x
-				    and above.z == under.z
-				    and ( string.find(uname, "pipeworks:pipe_")
-					 or string.find(uname, "pipeworks:storage_")
-					 or string.find(uname, "pipeworks:expansion_")
-					 or ( string.find(uname, "pipeworks:grating") and not isabove )
-					 or ( string.find(uname, "pipeworks:pump_") and not isabove )
-					 or ( string.find(uname, "pipeworks:entry_panel")
-					      and undernode.param2 == 13 )
-					 )
-				then
-					fdir = 13
-				end
-
-				if minetest.registered_nodes[uname]["buildable_to"] then
-					pos1 = under
-				end
-
-				if not minetest.registered_nodes[minetest.get_node(pos1).name]["buildable_to"] then return end
-
-				minetest.add_node(pos1, {name = "pipeworks:entry_panel_empty", param2 = fdir })
-				pipeworks.scan_for_pipe_objects(pos1)
-
-				if not pipeworks.expect_infinite_stacks then
-					itemstack:take_item()
-				end
-
-			else
-				minetest.registered_nodes[node.name].on_rightclick(pointed_thing.under, node, placer, itemstack)
-			end
-		end
-		return itemstack
-	end
+	on_rotate = pipeworks.fix_after_rotation
 })
 
-minetest.register_node("pipeworks:entry_panel_loaded", {
-	description = "Airtight Pipe entry/exit",
+local nodename_panel_loaded = "pipeworks:entry_panel_loaded"
+core.register_node(nodename_panel_loaded, {
+	description = S("Airtight Pipe entry/exit"),
 	drawtype = "mesh",
-	mesh = "pipeworks_entry_panel.obj",
+	mesh = "pipeworks_entry_panel"..polys..".obj",
 	tiles = { "pipeworks_entry_panel.png" },
 	paramtype = "light",
 	paramtype2 = "facedir",
-	groups = {snappy=3, pipe=1, not_in_creative_inventory=1},
-	sounds = default.node_sound_wood_defaults(),
+	groups = {snappy=3, pipe=1, not_in_creative_inventory=1, dig_generic = 4, axey=1, handy=1, pickaxey=1},
+	is_ground_content = false,
+	_mcl_hardness=0.8,
+	_sound_def = {
+		key = "node_sound_metal_defaults",
+	},
 	walkable = true,
-	after_place_node = function(pos)
-		pipeworks.scan_for_pipe_objects(pos)
-	end,
+	on_place = pipeworks.rotate_on_place,
 	after_dig_node = function(pos)
 		pipeworks.scan_for_pipe_objects(pos)
 	end,
 	selection_box = panel_cbox,
 	collision_box = panel_cbox,
-	drop = "pipeworks:entry_panel_empty"
+	drop = "pipeworks:entry_panel_empty",
+	on_rotate = pipeworks.fix_after_rotation
 })
 
-minetest.register_node("pipeworks:flow_sensor_empty", {
-	description = "Flow Sensor",
+pipeworks.ui_cat_tube_list[#pipeworks.ui_cat_tube_list+1] = "pipeworks:entry_panel_empty"
+
+-- TODO: AFAIK the two panels have no visual difference, so are redundant under new flow logic - alias?
+new_flow_logic_register.directional_horizonal_rotate(nodename_panel_empty, true)
+new_flow_logic_register.directional_horizonal_rotate(nodename_panel_loaded, true)
+
+
+
+local nodename_sensor_empty = "pipeworks:flow_sensor_empty"
+core.register_node(nodename_sensor_empty, {
+	description = S("Flow Sensor"),
 	drawtype = "mesh",
-	mesh = "pipeworks_flow_sensor.obj",
+	mesh = "pipeworks_flow_sensor"..polys..".obj",
 	tiles = { "pipeworks_flow_sensor_off.png" },
 	sunlight_propagates = true,
 	paramtype = "light",
 	paramtype2 = "facedir",
-	groups = {snappy=3, pipe=1},
-	sounds = default.node_sound_wood_defaults(),
+	groups = {snappy=3, pipe=1, dig_generic = 4, axey=1, handy=1, pickaxey=1},
+	is_ground_content = false,
+	_mcl_hardness=0.8,
+	_sound_def = {
+		key = "node_sound_metal_defaults",
+	},
 	walkable = true,
-	after_place_node = function(pos)
-		pipeworks.scan_for_pipe_objects(pos)
-	end,
+	on_place = pipeworks.rotate_on_place,
 	after_dig_node = function(pos)
 		pipeworks.scan_for_pipe_objects(pos)
 	end,
 	on_construct = function(pos)
 		if mesecon then
-			mesecon.receptor_off(pos, rules) 
+			mesecon.receptor_off(pos, pipeworks.mesecons_rules)
 		end
 	end,
 	selection_box = {
 		type = "fixed",
 		fixed = {
-			{ -8/16, -2/16, -2/16, 8/16, 2/16, 2/16 },
-			{ -4/16, -3/16, -3/16, 4/16, 3/16, 3/16 },
+			{ -2/16, -2/16, -8/16, 2/16, 2/16, 8/16 },
+			{ -3/16, -3/16, -4/16, 3/16, 3/16, 4/16 },
 		}
 	},
 	collision_box = {
 		type = "fixed",
 		fixed = {
-			{ -8/16, -2/16, -2/16, 8/16, 2/16, 2/16 },
-			{ -4/16, -3/16, -3/16, 4/16, 3/16, 3/16 },
+			{ -2/16, -2/16, -8/16, 2/16, 2/16, 8/16 },
+			{ -3/16, -3/16, -4/16, 3/16, 3/16, 4/16 },
 		}
 	},
-	mesecons = pipereceptor_off
+	mesecons = pipereceptor_off,
+	on_rotate = pipeworks.fix_after_rotation
 })
 
-minetest.register_node("pipeworks:flow_sensor_loaded", {
-	description = "Flow sensor (on)",
+local nodename_sensor_loaded = "pipeworks:flow_sensor_loaded"
+core.register_node(nodename_sensor_loaded, {
+	description = S("Flow sensor (on)"),
 	drawtype = "mesh",
-	mesh = "pipeworks_flow_sensor.obj",
+	mesh = "pipeworks_flow_sensor"..polys..".obj",
 	tiles = { "pipeworks_flow_sensor_on.png" },
 	sunlight_propagates = true,
 	paramtype = "light",
 	paramtype2 = "facedir",
-	groups = {snappy=3, pipe=1, not_in_creative_inventory=1},
-	sounds = default.node_sound_wood_defaults(),
+	groups = {snappy=3, pipe=1, not_in_creative_inventory=1, dig_generic = 4, axey=1, handy=1, pickaxey=1},
+	is_ground_content = false,
+	_mcl_hardness=0.8,
+	_sound_def = {
+		key = "node_sound_metal_defaults",
+	},
 	walkable = true,
-	after_place_node = function(pos)
-		pipeworks.scan_for_pipe_objects(pos)
-	end,
+	on_place = pipeworks.rotate_on_place,
 	after_dig_node = function(pos)
 		pipeworks.scan_for_pipe_objects(pos)
 	end,
 	on_construct = function(pos)
 		if mesecon then
-			mesecon.receptor_on(pos, rules) 
+			mesecon.receptor_on(pos, pipeworks.mesecons_rules)
 		end
 	end,
 	selection_box = {
 		type = "fixed",
 		fixed = {
-			{ -8/16, -2/16, -2/16, 8/16, 2/16, 2/16 },
-			{ -4/16, -3/16, -3/16, 4/16, 3/16, 3/16 },
+			{ -2/16, -2/16, -8/16, 2/16, 2/16, 8/16 },
+			{ -3/16, -3/16, -4/16, 3/16, 3/16, 4/16 },
 		}
 	},
 	collision_box = {
 		type = "fixed",
 		fixed = {
-			{ -8/16, -2/16, -2/16, 8/16, 2/16, 2/16 },
-			{ -4/16, -3/16, -3/16, 4/16, 3/16, 3/16 },
+			{ -2/16, -2/16, -8/16, 2/16, 2/16, 8/16 },
+			{ -3/16, -3/16, -4/16, 3/16, 3/16, 4/16 },
 		}
 	},
 	drop = "pipeworks:flow_sensor_empty",
-	mesecons = pipereceptor_on
+	mesecons = pipereceptor_on,
+	on_rotate = pipeworks.fix_after_rotation
 })
+pipeworks.ui_cat_tube_list[#pipeworks.ui_cat_tube_list+1] = "pipeworks:flow_sensor_empty"
+
+new_flow_logic_register.directional_horizonal_rotate(nodename_sensor_empty, true)
+new_flow_logic_register.directional_horizonal_rotate(nodename_sensor_loaded, true)
+-- activate flow sensor at roughly half the pressure pumps drive pipes
+local sensor_pressure_set = { { nodename_sensor_empty, 0.0 }, { nodename_sensor_loaded, 1.0 } }
+new_flow_logic_register.transition_simple_set(sensor_pressure_set, { mesecons=pipeworks.mesecons_rules })
+
+
 
 -- tanks
 
+-- TODO flow-logic-stub: these don't currently do anything under the new flow logic.
 for fill = 0, 10 do
-	local filldesc="empty"
-	local sgroups = {snappy=3, pipe=1, tankfill=fill+1}
+	local filldesc=S("empty")
+	local sgroups = {snappy=3, pipe=1, tankfill=fill+1, dig_generic = 4, axey=1, handy=1, pickaxey=1}
 	local image = nil
 
 	if fill ~= 0 then
-		filldesc=fill.."0% full"
-		sgroups = {snappy=3, pipe=1, tankfill=fill+1, not_in_creative_inventory=1}
+		filldesc=S("@1% full", 10*fill)
+		sgroups = {snappy=3, pipe=1, tankfill=fill+1, not_in_creative_inventory=1, dig_generic = 4, axey=1, handy=1, pickaxey=1}
 		image = "pipeworks_storage_tank_fittings.png"
 	end
 
-	minetest.register_node("pipeworks:expansion_tank_"..fill, {
-		description = "Expansion Tank ("..filldesc..")... You hacker, you.",
+	core.register_node("pipeworks:expansion_tank_"..fill, {
+		description = S("Expansion Tank (@1)", filldesc),
 		tiles = {
 			"pipeworks_storage_tank_fittings.png",
 			"pipeworks_storage_tank_fittings.png",
@@ -462,10 +609,15 @@ for fill = 0, 10 do
 		inventory_image = image,
 		paramtype = "light",
 		paramtype2 = "facedir",
-		groups = {snappy=3, pipe=1, tankfill=fill+1, not_in_creative_inventory=1},
-		sounds = default.node_sound_wood_defaults(),
+		groups = {snappy=3, pipe=1, tankfill=fill+1, not_in_creative_inventory=1, dig_generic = 4, axey=1, handy=1, pickaxey=1},
+		is_ground_content = false,
+		_mcl_hardness=0.8,
+		_sound_def = {
+			key = "node_sound_metal_defaults",
+		},
 		walkable = true,
 		drop = "pipeworks:storage_tank_0",
+		pipe_connections = { top = 1, bottom = 1},
 		after_place_node = function(pos)
 			pipeworks.look_for_stackable_tanks(pos)
 			pipeworks.scan_for_pipe_objects(pos)
@@ -473,10 +625,11 @@ for fill = 0, 10 do
 		after_dig_node = function(pos)
 			pipeworks.scan_for_pipe_objects(pos)
 		end,
+		on_rotate = false
 	})
 
-	minetest.register_node("pipeworks:storage_tank_"..fill, {
-		description = "Fluid Storage Tank ("..filldesc..")",
+	core.register_node("pipeworks:storage_tank_"..fill, {
+		description = S("Fluid Storage Tank (@1)", filldesc),
 		tiles = {
 			"pipeworks_storage_tank_fittings.png",
 			"pipeworks_storage_tank_fittings.png",
@@ -489,9 +642,14 @@ for fill = 0, 10 do
 		paramtype = "light",
 		paramtype2 = "facedir",
 		groups = sgroups,
-		sounds = default.node_sound_wood_defaults(),
+		is_ground_content = false,
+		_mcl_hardness=0.8,
+		_sound_def = {
+			key = "node_sound_metal_defaults",
+		},
 		walkable = true,
 		drop = "pipeworks:storage_tank_0",
+		pipe_connections = { top = 1, bottom = 1},
 		after_place_node = function(pos)
 			pipeworks.look_for_stackable_tanks(pos)
 			pipeworks.scan_for_pipe_objects(pos)
@@ -499,21 +657,29 @@ for fill = 0, 10 do
 		after_dig_node = function(pos)
 			pipeworks.scan_for_pipe_objects(pos)
 		end,
+		on_rotate = false
 	})
 end
+pipeworks.ui_cat_tube_list[#pipeworks.ui_cat_tube_list+1] = "pipeworks:storage_tank_0"
 
 -- fountainhead
 
-minetest.register_node("pipeworks:fountainhead", {
-	description = "Fountainhead",
+local nodename_fountain_empty = "pipeworks:fountainhead"
+core.register_node(nodename_fountain_empty, {
+	description = S("Fountainhead"),
 	drawtype = "mesh",
-	mesh = "pipeworks_fountainhead.obj",
+	mesh = "pipeworks_fountainhead"..polys..".obj",
 	tiles = { "pipeworks_fountainhead.png" },
 	sunlight_propagates = true,
 	paramtype = "light",
-	groups = {snappy=3, pipe=1},
-	sounds = default.node_sound_wood_defaults(),
+	groups = {snappy=3, pipe=1, dig_generic = 4, axey=1, handy=1, pickaxey=1},
+	is_ground_content = false,
+	_mcl_hardness=0.8,
+	_sound_def = {
+		key = "node_sound_metal_defaults",
+	},
 	walkable = true,
+	pipe_connections = { bottom = 1 },
 	after_place_node = function(pos)
 		pipeworks.scan_for_pipe_objects(pos)
 	end,
@@ -522,7 +688,7 @@ minetest.register_node("pipeworks:fountainhead", {
 	end,
 	on_construct = function(pos)
 		if mesecon then
-			mesecon.receptor_on(pos, rules) 
+			mesecon.receptor_on(pos, pipeworks.mesecons_rules)
 		end
 	end,
 	selection_box = {
@@ -533,19 +699,28 @@ minetest.register_node("pipeworks:fountainhead", {
 		type = "fixed",
 		fixed = { -2/16, -8/16, -2/16, 2/16, 8/16, 2/16 }
 	},
+	on_rotate = false
 })
+pipeworks.ui_cat_tube_list[#pipeworks.ui_cat_tube_list+1] = "pipeworks:fountainhead"
 
-minetest.register_node("pipeworks:fountainhead_pouring", {
-	description = "Fountainhead",
+local nodename_fountain_loaded = "pipeworks:fountainhead_pouring"
+core.register_node(nodename_fountain_loaded, {
+	description = S("Fountainhead"),
 	drawtype = "mesh",
-	mesh = "pipeworks_fountainhead.obj",
+	mesh = "pipeworks_fountainhead"..polys..".obj",
 	tiles = { "pipeworks_fountainhead.png" },
 	sunlight_propagates = true,
 	paramtype = "light",
-	groups = {snappy=3, pipe=1, not_in_creative_inventory=1},
-	sounds = default.node_sound_wood_defaults(),
+	groups = {snappy=3, pipe=1, not_in_creative_inventory=1, dig_generic = 4, axey=1, handy=1, pickaxey=1},
+	is_ground_content = false,
+	_mcl_hardness=0.8,
+	_sound_def = {
+		key = "node_sound_metal_defaults",
+	},
 	walkable = true,
+	pipe_connections = { bottom = 1 },
 	after_place_node = function(pos)
+		core.set_node(pos, { name = "pipeworks:fountainhead", param2 = core.get_node(pos).param2 })
 		pipeworks.scan_for_pipe_objects(pos)
 	end,
 	after_dig_node = function(pos)
@@ -553,7 +728,7 @@ minetest.register_node("pipeworks:fountainhead_pouring", {
 	end,
 	on_construct = function(pos)
 		if mesecon then
-			mesecon.receptor_on(pos, rules) 
+			mesecon.receptor_on(pos, pipeworks.mesecons_rules)
 		end
 	end,
 	selection_box = {
@@ -564,9 +739,83 @@ minetest.register_node("pipeworks:fountainhead_pouring", {
 		type = "fixed",
 		fixed = { -2/16, -8/16, -2/16, 2/16, 8/16, 2/16 }
 	},
-	drop = "pipeworks:fountainhead"
+	drop = "pipeworks:fountainhead",
+	on_rotate = false
+})
+new_flow_logic_register.directional_vertical_fixed(nodename_fountain_empty, false)
+new_flow_logic_register.directional_vertical_fixed(nodename_fountain_loaded, false)
+local fountain_upper = 1.0
+local fountain_lower = 1.0
+local fountain_neighbours={{x=0, y=1, z=0}}
+new_flow_logic_register.output_simple(nodename_fountain_empty, fountain_upper, fountain_lower, fountain_neighbours)
+new_flow_logic_register.output_simple(nodename_fountain_loaded, fountain_upper, fountain_lower, fountain_neighbours)
+
+local sp_cbox = {
+	type = "fixed",
+	fixed = {
+		{ -2/16, -2/16, -8/16, 2/16, 2/16, 8/16 }
+	}
+}
+
+local nodename_sp_empty = "pipeworks:straight_pipe_empty"
+core.register_node(nodename_sp_empty, {
+	description = S("Straight-only Pipe"),
+	drawtype = "mesh",
+	mesh = "pipeworks_straight_pipe"..polys..".obj",
+	tiles = { "pipeworks_straight_pipe_empty.png" },
+	paramtype = "light",
+	paramtype2 = "facedir",
+	groups = {snappy=3, pipe=1, dig_generic = 4, axey=1, handy=1, pickaxey=1},
+	is_ground_content = false,
+	_mcl_hardness=0.8,
+	_sound_def = {
+		key = "node_sound_metal_defaults",
+	},
+	walkable = true,
+	on_place = pipeworks.rotate_on_place,
+	after_dig_node = function(pos)
+		pipeworks.scan_for_pipe_objects(pos)
+	end,
+	selection_box = sp_cbox,
+	collision_box = sp_cbox,
+	on_rotate = pipeworks.fix_after_rotation,
+	check_for_pole = pipeworks.check_for_vert_pipe,
+	check_for_horiz_pole = pipeworks.check_for_horiz_pipe
 })
 
-minetest.register_alias("pipeworks:valve_off_loaded", "pipeworks:valve_off_empty")
-minetest.register_alias("pipeworks:entry_panel", "pipeworks:entry_panel_empty")
+local nodename_sp_loaded = "pipeworks:straight_pipe_loaded"
+core.register_node(nodename_sp_loaded, {
+	description = S("Straight-only Pipe"),
+	drawtype = "mesh",
+	mesh = "pipeworks_straight_pipe"..polys..".obj",
+	tiles = { "pipeworks_straight_pipe_loaded.png" },
+	paramtype = "light",
+	paramtype2 = "facedir",
+	groups = {snappy=3, pipe=1, not_in_creative_inventory=1, dig_generic = 4, axey=1, handy=1, pickaxey=1},
+	is_ground_content = false,
+	_mcl_hardness=0.8,
+	_sound_def = {
+		key = "node_sound_metal_defaults",
+	},
+	walkable = true,
+	on_place = pipeworks.rotate_on_place,
+	after_dig_node = function(pos)
+		pipeworks.scan_for_pipe_objects(pos)
+	end,
+	selection_box = sp_cbox,
+	collision_box = sp_cbox,
+	drop = "pipeworks:straight_pipe_empty",
+	on_rotate = pipeworks.fix_after_rotation,
+	check_for_pole = pipeworks.check_for_vert_pipe,
+	check_for_horiz_pole = pipeworks.check_for_horiz_pipe
+})
+pipeworks.ui_cat_tube_list[#pipeworks.ui_cat_tube_list+1] = "pipeworks:straight_pipe_empty"
+
+new_flow_logic_register.directional_horizonal_rotate(nodename_sp_empty, true)
+new_flow_logic_register.directional_horizonal_rotate(nodename_sp_loaded, true)
+
+-- Other misc stuff
+
+core.register_alias("pipeworks:valve_off_loaded", "pipeworks:valve_off_empty")
+core.register_alias("pipeworks:entry_panel", "pipeworks:entry_panel_empty")
 

filter-injector.lua

@@ -1,159 +1,156 @@
-local function delay(x)
-	return (function() return x end)
-end
+local S = core.get_translator("pipeworks")
+local fs_helpers = pipeworks.fs_helpers
 
 local function set_filter_infotext(data, meta)
-	local infotext = data.wise_desc.." Filter-Injector"
+	local infotext = S("@1 Filter-Injector", data.wise_desc)
 	if meta:get_int("slotseq_mode") == 2 then
-		infotext = infotext .. " (slot #"..meta:get_int("slotseq_index").." next)"
+		infotext = infotext .. " "..S("(slot #@1 next)", meta:get_int("slotseq_index"))
 	end
 	meta:set_string("infotext", infotext)
 end
 
 local function set_filter_formspec(data, meta)
-	local itemname = data.wise_desc.." Filter-Injector"
+	local itemname = S("@1 Filter-Injector", data.wise_desc)
 
 	local formspec
 	if data.digiline then
-		formspec = "size[8,2.7]"..
-			"item_image[0,0;1,1;pipeworks:"..data.name.."]"..
-			"label[1,0;"..minetest.formspec_escape(itemname).."]"..
-			"field[0.3,1.5;8.0,1;channel;Channel;${channel}]"..
-			fs_helpers.cycling_button(meta, "button[0,2;4,1", "slotseq_mode",
-				{"Sequence slots by Priority",
-				 "Sequence slots Randomly",
-				 "Sequence slots by Rotation"})..
-			fs_helpers.cycling_button(meta, "button[4,2;4,1", "exmatch_mode",
-				{"Exact match - off",
-				 "Exact match - on "})
+		local form_height = 3
+		if pipeworks.enable_item_tags then
+			form_height = 4
+		end
+		formspec =
+			("size[8.5,%f]"):format(form_height) ..
+			"item_image[0.2,0;1,1;pipeworks:"..data.name.."]"..
+			"label[1.2,0.2;"..core.formspec_escape(itemname).."]"..
+			"field[0.5,1.6;4.6,1;channel;"..S("Channel")..";${channel}]"..
+			"button[4.8,1.3;1.5,1;set_channel;"..S("Set").."]"..
+			fs_helpers.cycling_button(meta, ("button[0.2,%f;4.05,1"):format(form_height - 0.7), "slotseq_mode",
+				{S("Sequence slots by Priority"),
+				 S("Sequence slots Randomly"),
+				 S("Sequence slots by Rotation")})..
+			fs_helpers.cycling_button(meta, ("button[4.25,%f;4.05,1"):format(form_height - 0.7), "exmatch_mode",
+				{S("Exact match - off"),
+				 S("Exact match - on")})..
+			("button_exit[6.3,%f;2,1;close;" .. S("Close") .. "]"):format(form_height - 1.7)
+		if pipeworks.enable_item_tags then
+			formspec = formspec ..
+				("field[0.5,%f;4.6,1;item_tags;"):format(form_height - 1.4) .. S("Item Tags") .. ";${item_tags}]" ..
+				("button[4.8,%f;1.5,1;set_item_tags;"):format(form_height - 1.7) .. S("Set") .. "]"
+		end
 	else
 		local exmatch_button = ""
 		if data.stackwise then
 			exmatch_button =
-				fs_helpers.cycling_button(meta, "button[4,3.5;4,1", "exmatch_mode",
-					{"Exact match - off",
-					 "Exact match - on "})
+				fs_helpers.cycling_button(meta, "button["..(10.2-(0.22)-4)..",4.5;4,1", "exmatch_mode",
+					{S("Exact match - off"),
+					 S("Exact match - on")})
 		end
-
-		formspec = "size[8,8.5]"..
-			"item_image[0,0;1,1;pipeworks:"..data.name.."]"..
-			"label[1,0;"..minetest.formspec_escape(itemname).."]"..
-			"label[0,1;Prefer item types:]"..
-			"list[context;main;0,1.5;8,2;]"..
-			fs_helpers.cycling_button(meta, "button[0,3.5;4,1", "slotseq_mode",
-				{"Sequence slots by Priority",
-				 "Sequence slots Randomly",
-				 "Sequence slots by Rotation"})..
+		local size = "10.2,11"
+		local list_backgrounds = ""
+		if core.get_modpath("i3") or core.get_modpath("mcl_formspec") then
+			list_backgrounds = "style_type[box;colors=#666]"
+			for i=0, 7 do
+				for j=0, 1 do
+					list_backgrounds = list_backgrounds .. "box[".. 0.22+(i*1.25) ..",".. 1.75+(j*1.25) ..";1,1;]"
+				end
+			end
+		end
+		formspec =
+			"formspec_version[2]"..
+			"size["..size.."]"..
+			pipeworks.fs_helpers.get_prepends(size)..
+			"item_image[0.22,0.22;1,1;pipeworks:"..data.name.."]"..
+			"label[1.22,0.72;"..core.formspec_escape(itemname).."]"..
+			"label[0.22,1.5;"..S("Prefer item types:").."]"..
+			list_backgrounds..
+			"list[context;main;0.22,1.75;8,2;]"..
+			fs_helpers.cycling_button(meta, "button[0.22,4.5;4,1", "slotseq_mode",
+				{S("Sequence slots by Priority"),
+				 S("Sequence slots Randomly"),
+				 S("Sequence slots by Rotation")})..
 			exmatch_button..
-			"list[current_player;main;0,4.5;8,4;]"
+			pipeworks.fs_helpers.get_inv(6)..
+			"listring[]"
+		if pipeworks.enable_item_tags then
+			formspec = formspec ..
+				"field[5.8,0.5;3,0.8;item_tags;" .. S("Item Tags") .. ";${item_tags}]" ..
+				"button[9,0.3;1,1.1;set_item_tags;" .. S("Set") .. "]"
+		end
 	end
 	meta:set_string("formspec", formspec)
 end
 
--- todo SOON: this function has *way too many* parameters
-local function grabAndFire(data,slotseq_mode,exmatch_mode,filtmeta,frominv,frominvname,frompos,fromnode,filterfor,fromtube,fromdef,dir,fakePlayer,all)
-	local sposes = {}
-	for spos,stack in ipairs(frominv:get_list(frominvname)) do
-		local matches
-		if filterfor == "" then
-			matches = stack:get_name() ~= ""
-		else
-			matches = stack:get_name() == filterfor.name
-		end
-		if matches then table.insert(sposes, spos) end
-	end
-	if #sposes == 0 then return false end
-	if slotseq_mode == 1 then
-		for i = #sposes, 2, -1 do
-			local j = math.random(i)
-			local t = sposes[j]
-			sposes[j] = sposes[i]
-			sposes[i] = t
-		end
-	elseif slotseq_mode == 2 then
-		local headpos = filtmeta:get_int("slotseq_index")
-		table.sort(sposes, function (a, b)
-			if a >= headpos then
-				if b < headpos then return true end
-			else
-				if b >= headpos then return false end
-			end
-			return a < b
-		end)
-	end
-	for _, spos in ipairs(sposes) do
-			local stack = frominv:get_stack(frominvname, spos)
-			local doRemove = stack:get_count()
-			if fromtube.can_remove then
-				doRemove = fromtube.can_remove(frompos, fromnode, stack, dir)
-			elseif fromdef.allow_metadata_inventory_take then
-				doRemove = fromdef.allow_metadata_inventory_take(frompos, frominvname,spos, stack, fakePlayer)
-			end
-			-- stupid lack of continue statements grumble
-			if doRemove > 0 then
-				if slotseq_mode == 2 then
-					local nextpos = spos + 1
-					if nextpos > frominv:get_size(frominvname) then
-						nextpos = 1
-					end
-					filtmeta:set_int("slotseq_index", nextpos)
-					set_filter_infotext(data, filtmeta)
-				end
-				local item
-				local count
-				if all then
-					count = math.min(stack:get_count(), doRemove)
-					if filterfor.count and filterfor.count > 1 then
-						if exmatch_mode ~= 0 and filterfor.count > count then
-							return false
-						else
-							count = math.min(filterfor.count, count)
-						end
-					end
-				else
-					count = 1
-				end
-				if fromtube.remove_items then
-					-- it could be the entire stack...
-					item = fromtube.remove_items(frompos, fromnode, stack, dir, count)
-				else
-					item = stack:take_item(count)
-					frominv:set_stack(frominvname, spos, stack)
-					if fromdef.on_metadata_inventory_take then
-						fromdef.on_metadata_inventory_take(frompos, frominvname, spos, item, fakePlayer)
-					end
-				end
-				local pos = vector.add(frompos, vector.multiply(dir, 1.4))
-				local start_pos = vector.add(frompos, dir)
-				local item1 = pipeworks.tube_inject_item(pos, start_pos, dir, item)
-				return true-- only fire one item, please
-			end
-	end
-	return false
-end
-
 local function punch_filter(data, filtpos, filtnode, msg)
-	local filtmeta = minetest.get_meta(filtpos)
+	local filtmeta = core.get_meta(filtpos)
 	local filtinv = filtmeta:get_inventory()
 	local owner = filtmeta:get_string("owner")
-	local fakePlayer = {
-		get_player_name = delay(owner),
-		is_fake_player = ":pipeworks",
-	} -- TODO: use a mechanism as the wielder one
-	local dir = minetest.facedir_to_right_dir(filtnode.param2)
+	local fakeplayer = fakelib.create_player(owner)
+	local dir = pipeworks.facedir_to_right_dir(filtnode.param2)
 	local frompos = vector.subtract(filtpos, dir)
-	local fromnode = minetest.get_node(frompos)
+	local fromnode = core.get_node(frompos)
 	if not fromnode then return end
-	local fromdef = minetest.registered_nodes[fromnode.name]
-	if not fromdef then return end
-	local fromtube = fromdef.tube
+	local fromdef = core.registered_nodes[fromnode.name]
+	if not fromdef or not fromdef.tube then return end
+	local fromtube = table.copy(fromdef.tube)
+	local input_special_cases = {
+		["technic:mv_electric_furnace"] = "dst",
+		["technic:mv_electric_furnace_active"] = "dst",
+		["technic:mv_alloy_furnace"] = "dst",
+		["technic:mv_alloy_furnace_active"] = "dst",
+		["technic:mv_centrifuge"] = "dst",
+		["technic:mv_centrifuge_active"] = "dst",
+		["technic:mv_compressor"] = "dst",
+		["technic:mv_compressor_active"] = "dst",
+		["technic:mv_extractor"] = "dst",
+		["technic:mv_extractor_active"] = "dst",
+		["technic:mv_grinder"] = "dst",
+		["technic:mv_grinder_active"] = "dst",
+		["technic:tool_workshop"] = "src",
+		["technic:mv_freezer"] = "dst",
+		["technic:mv_freezer_active"] = "dst",
+		["technic:hv_electric_furnace"] = "dst",
+		["technic:hv_electric_furnace_active"] = "dst",
+		["technic:hv_compressor"] = "dst",
+		["technic:hv_compressor_active"] = "dst",
+		["technic:hv_grinder"] = "dst",
+		["technic:hv_grinder_active"] = "dst"
+	}
+
+	-- make sure there's something appropriate to inject the item into
+	local topos = vector.add(filtpos, dir)
+	local tonode = core.get_node(topos)
+	local todef = core.registered_nodes[tonode.name]
+
+	if not todef
+	  or not (core.get_item_group(tonode.name, "tube") == 1
+			  or core.get_item_group(tonode.name, "tubedevice") == 1
+			  or core.get_item_group(tonode.name, "tubedevice_receiver") == 1) then
+		return
+	end
+
+	if fromtube then fromtube.input_inventory = input_special_cases[fromnode.name] or fromtube.input_inventory end
 	if not (fromtube and fromtube.input_inventory) then return end
 
 	local slotseq_mode
-	local exact_match
+	local exmatch_mode
 
+	local item_tags = pipeworks.sanitize_tags(filtmeta:get_string("item_tags"))
 	local filters = {}
 	if data.digiline then
+		local function add_filter(name, group, count, wear, metadata)
+			table.insert(filters, {name = name, group = group, count = tonumber(count), wear = wear, metadata = metadata})
+		end
+
+		local function add_itemstring_filter(filter)
+			local filterstack = ItemStack(filter)
+			local filtername = filterstack:get_name()
+			local filtercount = filterstack:get_count()
+			local filterwear = string.match(filter, "%S*:%S*%s%d%s(%d)") and filterstack:get_wear()
+			local filtermetadata = string.match(filter, "%S*:%S*%s%d%s%d(%s.*)") and filterstack:get_metadata()
+
+			add_filter(filtername, nil, filtercount, filterwear, filtermetadata)
+		end
+
 		local t_msg = type(msg)
 		if t_msg == "table" then
 			local slotseq = msg.slotseq
@@ -173,10 +170,10 @@ local function punch_filter(data, filtpos, filtnode, msg)
 
 			local exmatch = msg.exmatch
 			local t_exmatch = type(exmatch)
-			if t_exmatch == "number" and exmatch >= 0 and exmatch <= 1 then
-				exact_match = exmatch
+			if t_exmatch == "number" and (exmatch == 0 or exmatch == 1) then
+				exmatch_mode = exmatch
 			elseif t_exmatch == "boolean" then
-				exact_match = exmatch and 1 or 0
+				exmatch_mode = exmatch and 1 or 0
 			end
 
 			local slotseq_index = msg.slotseq_index
@@ -193,40 +190,42 @@ local function punch_filter(data, filtpos, filtnode, msg)
 				filtmeta:set_int("slotseq_mode", slotseq_mode)
 			end
 
-			if exact_match ~= nil then
-				filtmeta:set_int("exmatch_mode", exact_match)
+			if exmatch_mode ~= nil then
+				filtmeta:set_int("exmatch_mode", exmatch_mode)
 			end
 
-			if slotseq_mode ~= nil or exact_match ~= nil then
+			if slotseq_mode ~= nil or exmatch_mode ~= nil then
 				set_filter_formspec(data, filtmeta)
 			end
 
+			if pipeworks.enable_item_tags then
+				if type(msg.tags) == "table" or type(msg.tags) == "string" then
+					item_tags = pipeworks.sanitize_tags(msg.tags)
+				elseif type(msg.tag) == "string" then
+					item_tags = pipeworks.sanitize_tags({msg.tag})
+				end
+			end
+
 			if msg.nofire then
 				return
 			end
 
-			if type(msg.name) == "string" then
-				table.insert(filters, {name = msg.name, count = tonumber(msg.count) or 1})
+			if msg.name or msg.group or msg.count or msg.wear or msg.metadata then
+				add_filter(msg.name, msg.group, msg.count, msg.wear, msg.metadata)
 			else
 				for _, filter in ipairs(msg) do
 					local t_filter = type(filter)
 					if t_filter == "table" then
-						if type(filter.name) == "string" then
-							table.insert(filters, {name = filter.name, count = tonumber(filter.count) or 1})
+						if filter.name or filter.group or filter.count or filter.wear or filter.metadata then
+							add_filter(filter.name, filter.group, filter.count, filter.wear, filter.metadata)
 						end
 					elseif t_filter == "string" then
-						local filterstack = ItemStack(filter)
-						local filtername = filterstack:get_name()
-						local filtercount = filterstack:get_count()
-						if filtername ~= "" then table.insert(filters, {name = filtername, count = filtercount}) end
+						add_itemstring_filter(filter)
 					end
 				end
 			end
 		elseif t_msg == "string" then
-			local filterstack = ItemStack(msg)
-			local filtername = filterstack:get_name()
-			local filtercount = filterstack:get_count()
-			if filtername ~= "" then table.insert(filters, {name = filtername, count = filtercount}) end
+			add_itemstring_filter(msg)
 		end
 	else
 		for _, filterstack in ipairs(filtinv:get_list("main")) do
@@ -241,17 +240,162 @@ local function punch_filter(data, filtpos, filtnode, msg)
 		slotseq_mode = filtmeta:get_int("slotseq_mode")
 	end
 
-	if exact_match == nil then
-		exact_match = filtmeta:get_int("exmatch_mode")
+	if exmatch_mode == nil then
+		exmatch_mode = filtmeta:get_int("exmatch_mode")
 	end
 
-	local frommeta = minetest.get_meta(frompos)
-	local frominv = frommeta:get_inventory()
+	local frominv
+	if fromtube.return_input_invref then
+		frominv = fromtube.return_input_invref(frompos, fromnode, dir, owner)
+		if not frominv then
+			return
+		end
+	else
+		local frommeta = core.get_meta(frompos)
+		frominv = frommeta:get_inventory()
+	end
 	if fromtube.before_filter then fromtube.before_filter(frompos) end
+
+	local function grabAndFire(frominvname, filterfor)
+		local sposes = {}
+		if not frominvname or not frominv:get_list(frominvname) then return end
+		for spos,stack in ipairs(frominv:get_list(frominvname)) do
+			local matches
+			if filterfor == "" then
+				matches = stack:get_name() ~= ""
+			else
+				local fname = filterfor.name
+				local fgroup = filterfor.group
+				local fwear = filterfor.wear
+				local fmetadata = filterfor.metadata
+				matches = (not fname                                             -- If there's a name filter,
+				           or stack:get_name() == fname)                         --  it must match.
+
+				          and (not fgroup                                        -- If there's a group filter,
+				               or (type(fgroup) == "string"                      --  it must be a string
+				                   and core.get_item_group(                  --  and it must match.
+				                                stack:get_name(), fgroup) ~= 0))
+
+				          and (not fwear                                         -- If there's a wear filter:
+				               or (type(fwear) == "number"                       --  If it's a number,
+				                   and stack:get_wear() == fwear)                --   it must match.
+				               or (type(fwear) == "table"                        --  If it's a table:
+				                   and (not fwear[1]                             --   If there's a lower bound,
+				                        or (type(fwear[1]) == "number"           --    it must be a number
+				                            and fwear[1] <= stack:get_wear()))   --    and it must be <= the actual wear.
+				                   and (not fwear[2]                             --   If there's an upper bound
+				                        or (type(fwear[2]) == "number"           --    it must be a number
+				                            and stack:get_wear() < fwear[2]))))  --    and it must be > the actual wear.
+				                                                                 --  If the wear filter is of any other type, fail.
+
+				          and (not fmetadata                                     -- If there's a metadata filter,
+				               or (type(fmetadata) == "string"                   --  it must be a string
+				                   and stack:get_metadata() == fmetadata))       --  and it must match.
+			end
+			if matches then table.insert(sposes, spos) end
+		end
+		if #sposes == 0 then return false end
+		if slotseq_mode == 1 then
+			for i = #sposes, 2, -1 do
+				local j = math.random(i)
+				local t = sposes[j]
+				sposes[j] = sposes[i]
+				sposes[i] = t
+			end
+		elseif slotseq_mode == 2 then
+			local headpos = filtmeta:get_int("slotseq_index")
+			table.sort(sposes, function (a, b)
+				if a >= headpos then
+					if b < headpos then return true end
+				else
+					if b >= headpos then return false end
+				end
+				return a < b
+			end)
+		end
+		local available_items = {}
+		local available_count = 0
+		for _, spos in ipairs(sposes) do
+			local stack = frominv:get_stack(frominvname, spos)
+			local doRemove = stack:get_count()
+			if fromtube.can_remove then
+				doRemove = fromtube.can_remove(frompos, fromnode, stack, dir, frominvname, spos)
+			elseif fromdef.allow_metadata_inventory_take then
+				doRemove = fromdef.allow_metadata_inventory_take(frompos, frominvname, spos, stack, fakeplayer)
+			end
+			-- stupid lack of continue statements grumble
+			if doRemove > 0 then
+				if slotseq_mode == 2 then
+					local nextpos = spos + 1
+					if nextpos > frominv:get_size(frominvname) then
+						nextpos = 1
+					end
+					filtmeta:set_int("slotseq_index", nextpos)
+					set_filter_infotext(data, filtmeta)
+				end
+				local count
+				if data.stackwise then
+					count = math.min(stack:get_count(), doRemove)
+					if filterfor.count and (filterfor.count > 1 or data.digiline) then
+						count = math.min(filterfor.count - available_count, count)
+					end
+					table.insert(available_items, {spos = spos, count = count})
+					available_count = available_count + count
+					if not filterfor.count or available_count >= filterfor.count then
+						break
+					end
+				else
+					table.insert(available_items, {spos = spos, count = 1})
+					available_count = 1
+					break  -- only one item allowed so ignore other stacks
+				end
+			end
+		end
+		if available_count == 0 or (exmatch_mode ~= 0 and filterfor.count and available_count < filterfor.count) then
+			return false -- not enough, fail
+		end
+		local taken_stacks = {}
+		for _,item in ipairs(available_items) do
+			local stack = frominv:get_stack(frominvname, item.spos)
+			local taken
+			if fromtube.remove_items then
+				taken = fromtube.remove_items(frompos, fromnode, stack, dir, item.count, frominvname, item.spos)
+			else
+				taken = stack:take_item(item.count)
+				frominv:set_stack(frominvname, item.spos, stack)
+				if fromdef.on_metadata_inventory_take then
+					fromdef.on_metadata_inventory_take(frompos, frominvname, item.spos, taken, fakeplayer)
+				end
+			end
+			if not taken:is_empty() then
+				table.insert(taken_stacks, taken)
+			end
+		end
+		if #taken_stacks > 1 then
+			-- merge stacks if possible to reduce items in tubes
+			local merged = {}
+			for _,a in ipairs(taken_stacks) do
+				for _,b in ipairs(merged) do
+					a = b:add_item(a)
+				end
+				if not a:is_empty() then
+					table.insert(merged, a)
+				end
+			end
+			taken_stacks = merged
+		end
+		for _,stack in ipairs(taken_stacks) do
+			local pos = vector.add(frompos, vector.multiply(dir, 1.4))
+			local start_pos = vector.add(frompos, dir)
+			pipeworks.tube_inject_item(pos, start_pos, dir, stack, fakeplayer:get_player_name(), item_tags)
+		end
+		return true
+	end
+
 	for _, frominvname in ipairs(type(fromtube.input_inventory) == "table" and fromtube.input_inventory or {fromtube.input_inventory}) do
 		local done = false
 		for _, filterfor in ipairs(filters) do
-			if grabAndFire(data, slotseq_mode, exact_match, filtmeta, frominv, frominvname, frompos, fromnode, filterfor, fromtube, fromdef, dir, fakePlayer, data.stackwise) then
+			if grabAndFire(frominvname, filterfor) then
 				done = true
 				break
 			end
@@ -264,23 +408,23 @@ end
 for _, data in ipairs({
 	{
 		name = "filter",
-		wise_desc = "Itemwise",
+		wise_desc = S("Itemwise"),
 		stackwise = false,
 	},
 	{
 		name = "mese_filter",
-		wise_desc = "Stackwise",
+		wise_desc = S("Stackwise"),
 		stackwise = true,
 	},
 	{ -- register even if no digilines
 		name = "digiline_filter",
-		wise_desc = "Digiline",
+		wise_desc = S("Digiline"),
 		stackwise = true,
 		digiline = true,
 	},
 }) do
 	local node = {
-		description = data.wise_desc.." Filter-Injector",
+		description = S("@1 Filter-Injector", data.wise_desc),
 		tiles = {
 			"pipeworks_"..data.name.."_top.png",
 			"pipeworks_"..data.name.."_top.png",
@@ -290,64 +434,82 @@ for _, data in ipairs({
 			"pipeworks_"..data.name.."_top.png",
 		},
 		paramtype2 = "facedir",
-		groups = {snappy = 2, choppy = 2, oddly_breakable_by_hand = 2, mesecon = 2},
+		groups = {snappy = 2, choppy = 2, oddly_breakable_by_hand = 2, mesecon = 2, axey=1, handy=1, pickaxey=1},
+		is_ground_content = false,
+		_mcl_hardness=0.8,
 		legacy_facedir_simple = true,
-		sounds = default.node_sound_wood_defaults(),
+		_sound_def = {
+			key = "node_sound_wood_defaults",
+		},
 		on_construct = function(pos)
-			local meta = minetest.get_meta(pos)
+			local meta = core.get_meta(pos)
 			set_filter_formspec(data, meta)
 			set_filter_infotext(data, meta)
 			local inv = meta:get_inventory()
 			inv:set_size("main", 8*2)
 		end,
 		after_place_node = function (pos, placer)
-			minetest.get_meta(pos):set_string("owner", placer:get_player_name())
+			core.get_meta(pos):set_string("owner", placer:get_player_name())
 			pipeworks.after_place(pos)
 		end,
 		after_dig_node = pipeworks.after_dig,
+		on_rotate = pipeworks.on_rotate,
 		allow_metadata_inventory_put = function(pos, listname, index, stack, player)
-			if not pipeworks.may_configure(pos, player) then return 0 end
-			return stack:get_count()
+			if not pipeworks.may_configure(pos, player) then
+				return 0
+			end
+			local inv = core.get_meta(pos):get_inventory()
+			inv:set_stack("main", index, stack)
+			return 0
 		end,
 		allow_metadata_inventory_take = function(pos, listname, index, stack, player)
-			if not pipeworks.may_configure(pos, player) then return 0 end
-			return stack:get_count()
+			if not pipeworks.may_configure(pos, player) then
+				return 0
+			end
+			local inv = core.get_meta(pos):get_inventory()
+			local fake_stack = inv:get_stack("main", index)
+			fake_stack:take_item(stack:get_count())
+			inv:set_stack("main", index, fake_stack)
+			return 0
 		end,
 		allow_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
 			if not pipeworks.may_configure(pos, player) then return 0 end
 			return count
 		end,
-		can_dig = function(pos, player)
-			local meta = minetest.get_meta(pos)
-			local inv = meta:get_inventory()
-			return inv:is_empty("main")
-		end,
 		tube = {connect_sides = {right = 1}},
 	}
 
 	if data.digiline then
 		node.groups.mesecon = nil
-		if not minetest.get_modpath("digilines") then
+		if not core.get_modpath("digilines") then
 			node.groups.not_in_creative_inventory = 1
 		end
 
 		node.on_receive_fields = function(pos, formname, fields, sender)
-			if not pipeworks.may_configure(pos, sender) then return end
-			fs_helpers.on_receive_fields(pos, fields)
-
-			if fields.channel then
-				minetest.get_meta(pos):set_string("channel", fields.channel)
+			if (fields.quit and not fields.key_enter_field)
+			or not pipeworks.may_configure(pos, sender) then
+				return
 			end
 
-			local meta = minetest.get_meta(pos)
+			fs_helpers.on_receive_fields(pos, fields)
+
+			if fields.channel and (fields.key_enter_field == "channel" or fields.set_channel) then
+				core.get_meta(pos):set_string("channel", fields.channel)
+			end
+
+			local meta = core.get_meta(pos)
+			if pipeworks.enable_item_tags and fields.item_tags and (fields.key_enter_field == "item_tags" or fields.set_item_tags) then
+				local tags = pipeworks.sanitize_tags(fields.item_tags)
+				meta:set_string("item_tags", table.concat(tags, ","))
+			end
 			--meta:set_int("slotseq_index", 1)
 			set_filter_formspec(data, meta)
 			set_filter_infotext(data, meta)
 		end
-		node.digiline = {
+		node.digilines = {
 			effector = {
 				action = function(pos, node, channel, msg)
-					local meta = minetest.get_meta(pos)
+					local meta = core.get_meta(pos)
 					local setchan = meta:get_string("channel")
 					if setchan ~= channel then return end
 
@@ -359,8 +521,12 @@ for _, data in ipairs({
 		node.on_receive_fields = function(pos, formname, fields, sender)
 			if not pipeworks.may_configure(pos, sender) then return end
 			fs_helpers.on_receive_fields(pos, fields)
-			local meta = minetest.get_meta(pos)
+			local meta = core.get_meta(pos)
 			meta:set_int("slotseq_index", 1)
+			if pipeworks.enable_item_tags and fields.item_tags and (fields.key_enter_field == "item_tags" or fields.set_item_tags) then
+				local tags = pipeworks.sanitize_tags(fields.item_tags)
+				meta:set_string("item_tags", table.concat(tags, ","))
+			end
 			set_filter_formspec(data, meta)
 			set_filter_infotext(data, meta)
 		end
@@ -378,34 +544,67 @@ for _, data in ipairs({
 
 
 
-	minetest.register_node("pipeworks:"..data.name, node)
+	core.register_node("pipeworks:"..data.name, node)
+	pipeworks.ui_cat_tube_list[#pipeworks.ui_cat_tube_list+1] = "pipeworks:"..data.name
 end
 
-minetest.register_craft( {
-	output = "pipeworks:filter 2",
-	recipe = {
-	        { "default:steel_ingot", "default:steel_ingot", "homedecor:plastic_sheeting" },
-	        { "group:stick", "default:mese_crystal", "homedecor:plastic_sheeting" },
-	        { "default:steel_ingot", "default:steel_ingot", "homedecor:plastic_sheeting" }
-	},
-})
-
-minetest.register_craft( {
-	output = "pipeworks:mese_filter 2",
-	recipe = {
-	        { "default:steel_ingot", "default:steel_ingot", "homedecor:plastic_sheeting" },
-	        { "group:stick", "default:mese", "homedecor:plastic_sheeting" },
-	        { "default:steel_ingot", "default:steel_ingot", "homedecor:plastic_sheeting" }
-	},
-})
-
-if minetest.get_modpath("digilines") then
-	minetest.register_craft( {
-		output = "pipeworks:digiline_filter 2",
-		recipe = {
-			{ "default:steel_ingot", "default:steel_ingot", "homedecor:plastic_sheeting" },
-			{ "group:stick", "digilines:wire_std_00000000", "homedecor:plastic_sheeting" },
-			{ "default:steel_ingot", "default:steel_ingot", "homedecor:plastic_sheeting" }
-		},
-	})
+--[[
+In the past the filter-injectors had real items in their inventories. This code
+puts them to the input to the filter-injector if possible. Else the items are
+dropped.
+]]
+local function put_to_inputinv(pos, node, filtmeta, list)
+	local dir = pipeworks.facedir_to_right_dir(node.param2)
+	local frompos = vector.subtract(pos, dir)
+	local fromnode = core.get_node(frompos)
+	local fromdef = core.registered_nodes[fromnode.name]
+	if not fromdef or not fromdef.tube then
+		return
+	end
+	local fromtube = fromdef.tube
+	local frominv
+	if fromtube.return_input_invref then
+		local owner = filtmeta:get_string("owner")
+		frominv = fromtube.return_input_invref(frompos, fromnode, dir, owner)
+		if not frominv then
+			return
+		end
+	else
+		frominv = core.get_meta(frompos):get_inventory()
+	end
+	local listname = type(fromtube.input_inventory) == "table" and
+			fromtube.input_inventory[1] or fromtube.input_inventory
+	if not listname then
+		return
+	end
+	for i = 1, #list do
+		local item = list[i]
+		if not item:is_empty() then
+			local leftover = frominv:add_item(listname, item)
+			if not leftover:is_empty() then
+				core.add_item(pos, leftover)
+			end
+		end
+	end
+	return true
 end
+core.register_lbm({
+	label = "Give back items of old filters that had real inventories",
+	name = "pipeworks:give_back_old_filter_items",
+	nodenames = {"pipeworks:filter", "pipeworks:mese_filter"},
+	run_at_every_load = false,
+	action = function(pos, node)
+		local meta = core.get_meta(pos)
+		local list = meta:get_inventory():get_list("main")
+		if put_to_inputinv(pos, node, meta, list) then
+			return
+		end
+		pos.y = pos.y + 1
+		for i = 1, #list do
+			local item = list[i]
+			if not item:is_empty() then
+				core.add_item(pos, item)
+			end
+		end
+	end,
+})

flowing_logic.lua

@@ -4,7 +4,7 @@
 -- Contributed by mauvebic, 2013-01-03, rewritten a bit by Vanessa Ezekowitz
 --
 
-local finitewater = minetest.setting_getbool("liquid_finite")
+local finitewater = core.settings:get_bool("liquid_finite")
 
 pipeworks.check_for_liquids = function(pos)
 	local coords = {
@@ -15,9 +15,9 @@ pipeworks.check_for_liquids = function(pos)
 		{x=pos.x,y=pos.y,z=pos.z-1},
 		{x=pos.x,y=pos.y,z=pos.z+1},	}
 	for i =1,6 do
-		local name = minetest.get_node(coords[i]).name
+		local name = core.get_node(coords[i]).name
 		if name and string.find(name,"water") then
-			if finitewater then minetest.remove_node(coords[i]) end
+			if finitewater then core.remove_node(coords[i]) end
 			return true
 		end
 	end
@@ -31,46 +31,60 @@ pipeworks.check_for_inflows = function(pos,node)
 		{x=pos.x-1,y=pos.y,z=pos.z},
 		{x=pos.x+1,y=pos.y,z=pos.z},
 		{x=pos.x,y=pos.y,z=pos.z-1},
-		{x=pos.x,y=pos.y,z=pos.z+1},	}
+		{x=pos.x,y=pos.y,z=pos.z+1},
+	}
 	local newnode = false
 	local source = false
-	for i =1,6 do
+	for i = 1, 6 do
 		if newnode then break end
-		local name = minetest.get_node(coords[i]).name
+		local testnode = core.get_node(coords[i])
+		local name = testnode.name
 		if name and (name == "pipeworks:pump_on" and pipeworks.check_for_liquids(coords[i])) or string.find(name,"_loaded") then
 			if string.find(name,"_loaded") then
-				source = minetest.get_meta(coords[i]):get_string("source")
-				if source == minetest.pos_to_string(pos) then break end
+				source = core.get_meta(coords[i]):get_string("source")
+				if source == core.pos_to_string(pos) then break end
+			end
+			if string.find(name, "valve") or string.find(name, "sensor")
+			  or string.find(name, "straight_pipe") or string.find(name, "panel") then
+
+				if ((i == 3 or i == 4) and core.facedir_to_dir(testnode.param2).x ~= 0)
+				  or ((i == 5 or i == 6) and core.facedir_to_dir(testnode.param2).z ~= 0)
+				  or ((i == 1 or i == 2) and core.facedir_to_dir(testnode.param2).y ~= 0) then
+
+					newnode = string.gsub(node.name,"empty","loaded")
+					source = {x=coords[i].x,y=coords[i].y,z=coords[i].z}
+				end
+			else
+				newnode = string.gsub(node.name,"empty","loaded")
+				source = {x=coords[i].x,y=coords[i].y,z=coords[i].z}
 			end
-			newnode = string.gsub(node.name,"empty","loaded")
-			source = {x=coords[i].x,y=coords[i].y,z=coords[i].z}
 		end
 	end
-	if newnode then 
-		minetest.add_node(pos,{name=newnode, param2 = node.param2}) 
-		minetest.get_meta(pos):set_string("source",minetest.pos_to_string(source))
+	if newnode then
+		core.add_node(pos,{name=newnode, param2 = node.param2})
+		core.get_meta(pos):set_string("source",core.pos_to_string(source))
 	end
 end
 
 pipeworks.check_sources = function(pos,node)
-	local sourcepos = minetest.string_to_pos(minetest.get_meta(pos):get_string("source"))
+	local sourcepos = core.string_to_pos(core.get_meta(pos):get_string("source"))
 	if not sourcepos then return end
-	local source = minetest.get_node(sourcepos).name
+	local source = core.get_node(sourcepos).name
 	local newnode = false
 	if source and not ((source == "pipeworks:pump_on" and pipeworks.check_for_liquids(sourcepos)) or string.find(source,"_loaded") or source == "ignore" ) then
 		newnode = string.gsub(node.name,"loaded","empty")
 	end
 
-	if newnode then 
-		minetest.add_node(pos,{name=newnode, param2 = node.param2}) 
-		minetest.get_meta(pos):set_string("source","")
+	if newnode then
+		core.add_node(pos,{name=newnode, param2 = node.param2})
+		core.get_meta(pos):set_string("source","")
 	end
 end
 
 pipeworks.spigot_check = function(pos, node)
-	local belowname = minetest.get_node({x=pos.x,y=pos.y-1,z=pos.z}).name
-	if belowname and (belowname == "air" or belowname == "default:water_flowing" or belowname == "default:water_source") then 
-		local spigotname = minetest.get_node(pos).name
+	local belowname = core.get_node({x=pos.x,y=pos.y-1,z=pos.z}).name
+	if belowname and (belowname == "air" or belowname == pipeworks.liquids.water.flowing or belowname == pipeworks.liquids.water.source) then
+		local spigotname = core.get_node(pos).name
 		local fdir=node.param2 % 4
 		local check = {
 			{x=pos.x,y=pos.y,z=pos.z+1},
@@ -78,19 +92,19 @@ pipeworks.spigot_check = function(pos, node)
 			{x=pos.x,y=pos.y,z=pos.z-1},
 			{x=pos.x-1,y=pos.y,z=pos.z}
 		}
-		local near_node = minetest.get_node(check[fdir+1])
+		local near_node = core.get_node(check[fdir+1])
 		if near_node and string.find(near_node.name, "_loaded") then
 			if spigotname and spigotname == "pipeworks:spigot" then
-				minetest.add_node(pos,{name = "pipeworks:spigot_pouring", param2 = fdir})
-				if finitewater or belowname ~= "default:water_source" then
-					minetest.add_node({x=pos.x,y=pos.y-1,z=pos.z},{name = "default:water_source"})
+				core.add_node(pos,{name = "pipeworks:spigot_pouring", param2 = fdir})
+				if finitewater or belowname ~= pipeworks.liquids.water.source then
+					core.add_node({x=pos.x,y=pos.y-1,z=pos.z},{name = pipeworks.liquids.water.source})
 				end
 			end
 		else
 			if spigotname == "pipeworks:spigot_pouring" then
-				minetest.add_node({x=pos.x,y=pos.y,z=pos.z},{name = "pipeworks:spigot", param2 = fdir})
-				if belowname == "default:water_source" and not finitewater then
-					minetest.remove_node({x=pos.x,y=pos.y-1,z=pos.z})
+				core.add_node({x=pos.x,y=pos.y,z=pos.z},{name = "pipeworks:spigot", param2 = fdir})
+				if belowname == pipeworks.liquids.water.source and not finitewater then
+					core.remove_node({x=pos.x,y=pos.y-1,z=pos.z})
 				end
 			end
 		end
@@ -98,22 +112,22 @@ pipeworks.spigot_check = function(pos, node)
 end
 
 pipeworks.fountainhead_check = function(pos, node)
-	local abovename = minetest.get_node({x=pos.x,y=pos.y+1,z=pos.z}).name
-	if abovename and (abovename == "air" or abovename == "default:water_flowing" or abovename == "default:water_source") then 
-		local fountainhead_name = minetest.get_node(pos).name
-		local near_node = minetest.get_node({x=pos.x,y=pos.y-1,z=pos.z})
+	local abovename = core.get_node({x=pos.x,y=pos.y+1,z=pos.z}).name
+	if abovename and (abovename == "air" or abovename == pipeworks.liquids.water.flowing or abovename == pipeworks.liquids.water.source) then
+		local fountainhead_name = core.get_node(pos).name
+		local near_node = core.get_node({x=pos.x,y=pos.y-1,z=pos.z})
 		if near_node and string.find(near_node.name, "_loaded") then
 			if fountainhead_name and fountainhead_name == "pipeworks:fountainhead" then
-				minetest.add_node(pos,{name = "pipeworks:fountainhead_pouring"})
-				if finitewater or abovename ~= "default:water_source" then
-					minetest.add_node({x=pos.x,y=pos.y+1,z=pos.z},{name = "default:water_source"})
+				core.add_node(pos,{name = "pipeworks:fountainhead_pouring"})
+				if finitewater or abovename ~= pipeworks.liquids.water.source then
+					core.add_node({x=pos.x,y=pos.y+1,z=pos.z},{name = pipeworks.liquids.water.source})
 				end
 			end
 		else
 			if fountainhead_name == "pipeworks:fountainhead_pouring" then
-				minetest.add_node({x=pos.x,y=pos.y,z=pos.z},{name = "pipeworks:fountainhead"})
-				if abovename == "default:water_source" and not finitewater then
-					minetest.remove_node({x=pos.x,y=pos.y+1,z=pos.z})
+				core.add_node({x=pos.x,y=pos.y,z=pos.z},{name = "pipeworks:fountainhead"})
+				if abovename == pipeworks.liquids.water.source and not finitewater then
+					core.remove_node({x=pos.x,y=pos.y+1,z=pos.z})
 				end
 			end
 		end

init.lua

@@ -3,18 +3,24 @@
 -- This mod supplies various steel pipes and plastic pneumatic tubes
 -- and devices that they can connect to.
 --
--- License: WTFPL
---
 
-pipeworks = {}
-
-local DEBUG = false
-
-pipeworks.worldpath = minetest.get_worldpath()
-pipeworks.modpath = minetest.get_modpath("pipeworks")
-
-dofile(pipeworks.modpath.."/default_settings.txt")
+pipeworks = {
+	ui_cat_tube_list = {},
+	worldpath = core.get_worldpath(),
+	modpath = core.get_modpath("pipeworks"),
+	liquids = {
+		water = {
+			source = core.registered_nodes["mapgen_water_source"].name,
+			flowing = core.registered_nodes["mapgen_water_source"].liquid_alternative_flowing
+		},
+		river_water = {
+			source = core.registered_nodes["mapgen_river_water_source"].name,
+			flowing = core.registered_nodes["mapgen_river_water_source"].liquid_alternative_flowing
+		}
+	}
+}
 
+dofile(pipeworks.modpath.."/default_settings.lua")
 -- Read the external config file if it exists.
 local worldsettingspath = pipeworks.worldpath.."/pipeworks_settings.txt"
 local worldsettingsfile = io.open(worldsettingspath, "r")
@@ -22,71 +28,29 @@ if worldsettingsfile then
 	worldsettingsfile:close()
 	dofile(worldsettingspath)
 end
-
--- Random variables
-
-pipeworks.expect_infinite_stacks = true
-if minetest.get_modpath("unified_inventory") or not minetest.setting_getbool("creative_mode") then
-	pipeworks.expect_infinite_stacks = false
+if pipeworks.toggles.pipe_mode == "pressure" then
+	core.log("warning", "pipeworks pressure logic mode comes with caveats and differences in behaviour, you have been warned!")
+end
+if pipeworks.entity_update_interval >= 0.2 and pipeworks.enable_accelerator_tube then
+	core.log("warning", "pipeworks accelerator tubes will not entirely work with an entity update interval 0.2 or above.")
 end
 
-pipeworks.meseadjlist={{x=0,y=0,z=1},{x=0,y=0,z=-1},{x=0,y=1,z=0},{x=0,y=-1,z=0},{x=1,y=0,z=0},{x=-1,y=0,z=0}}
-
-pipeworks.rules_all = {{x=0, y=0, z=1},{x=0, y=0, z=-1},{x=1, y=0, z=0},{x=-1, y=0, z=0},
-		{x=0, y=1, z=1},{x=0, y=1, z=-1},{x=1, y=1, z=0},{x=-1, y=1, z=0},
-		{x=0, y=-1, z=1},{x=0, y=-1, z=-1},{x=1, y=-1, z=0},{x=-1, y=-1, z=0},
-		{x=0, y=1, z=0}, {x=0, y=-1, z=0}}
-
-pipeworks.mesecons_rules={{x=0,y=0,z=1},{x=0,y=0,z=-1},{x=1,y=0,z=0},{x=-1,y=0,z=0},{x=0,y=1,z=0},{x=0,y=-1,z=0}}
-
-pipeworks.liquid_texture = "default_water.png"
-
--- Helper functions
-
-function pipeworks.fix_image_names(table, replacement)
-	local outtable={}
-	for i in ipairs(table) do
-		outtable[i]=string.gsub(table[i], "_XXXXX", replacement)
-	end
-
-	return outtable
-end
-
-function pipeworks.add_node_box(t, b)
-	if not t or not b then return end
-	for i in ipairs(b)
-		do table.insert(t, b[i])
-	end
-end
-
-function pipeworks.may_configure(pos, player)
-	local name = player:get_player_name()
-	local meta = minetest.get_meta(pos)
-	local owner = meta:get_string("owner")
-
-	if owner ~= "" then -- wielders and filters
-		return owner == name
-	end
-	return not minetest.is_protected(pos, name)
-end
-
-function pipeworks.replace_name(tbl,tr,name)
-	local ntbl={}
-	for key,i in pairs(tbl) do
-		if type(i)=="string" then
-			ntbl[key]=string.gsub(i,tr,name)
-		elseif type(i)=="table" then
-			ntbl[key]=pipeworks.replace_name(i,tr,name)
-		else
-			ntbl[key]=i
-		end
-	end
-	return ntbl
+pipeworks.logger = function(msg)
+	core.log("action", "[pipeworks] "..msg)
 end
 
 -------------------------------------------
 -- Load the various other parts of the mod
 
+-- early auto-detection for finite water mode if not explicitly disabled
+if pipeworks.toggles.finite_water == nil then
+	dofile(pipeworks.modpath.."/autodetect-finite-water.lua")
+end
+
+if core.get_modpath("signs_lib") then
+	dofile(pipeworks.modpath.."/signs_compat.lua")
+end
+
 dofile(pipeworks.modpath.."/common.lua")
 dofile(pipeworks.modpath.."/models.lua")
 dofile(pipeworks.modpath.."/autoplace_pipes.lua")
@@ -94,24 +58,77 @@ dofile(pipeworks.modpath.."/autoplace_tubes.lua")
 dofile(pipeworks.modpath.."/luaentity.lua")
 dofile(pipeworks.modpath.."/item_transport.lua")
 dofile(pipeworks.modpath.."/flowing_logic.lua")
-dofile(pipeworks.modpath.."/crafts.lua")
-dofile(pipeworks.modpath.."/tube_registration.lua")
-dofile(pipeworks.modpath.."/routing_tubes.lua")
-dofile(pipeworks.modpath.."/sorting_tubes.lua")
-dofile(pipeworks.modpath.."/vacuum_tubes.lua")
-dofile(pipeworks.modpath.."/signal_tubes.lua")
-dofile(pipeworks.modpath.."/decorative_tubes.lua")
 dofile(pipeworks.modpath.."/filter-injector.lua")
+dofile(pipeworks.modpath.."/chests.lua")
 dofile(pipeworks.modpath.."/trashcan.lua")
 dofile(pipeworks.modpath.."/wielder.lua")
+dofile(pipeworks.modpath.."/tubes/registration.lua")
+dofile(pipeworks.modpath.."/tubes/routing.lua")
+dofile(pipeworks.modpath.."/tubes/sorting.lua")
+dofile(pipeworks.modpath.."/tubes/signal.lua")
+dofile(pipeworks.modpath.."/tubes/embedded_tube.lua")
+dofile(pipeworks.modpath.."/tubes/pane_embedded_tube.lua")
+dofile(pipeworks.modpath.."/tubes/tags.lua")
 
-if pipeworks.enable_pipes then dofile(pipeworks.modpath.."/pipes.lua") end
-if pipeworks.enable_teleport_tube then dofile(pipeworks.modpath.."/teleport_tube.lua") end
-if pipeworks.enable_pipe_devices then dofile(pipeworks.modpath.."/devices.lua") end
-if pipeworks.enable_redefines then dofile(pipeworks.modpath.."/compat.lua") end
-if pipeworks.enable_autocrafter then dofile(pipeworks.modpath.."/autocrafter.lua") end
+if pipeworks.enable_teleport_tube then
+	dofile(pipeworks.modpath.."/tubes/teleport.lua")
+end
+if pipeworks.enable_lua_tube and core.get_modpath("mesecons") then
+	dofile(pipeworks.modpath.."/tubes/lua.lua")
+end
+if pipeworks.enable_sand_tube or pipeworks.enable_mese_sand_tube then
+	dofile(pipeworks.modpath.."/tubes/vacuum.lua")
+end
 
-minetest.register_alias("pipeworks:pipe", "pipeworks:pipe_110000_empty")
+local logicdir = "/pressure_logic/"
 
-print("Pipeworks loaded!")
+-- note that even with these files the new flow logic is not yet default.
+-- registration will take place but no actual ABMs/node logic will be installed,
+-- unless the toggle flag is specifically enabled in the per-world settings flag.
+dofile(pipeworks.modpath..logicdir.."flowable_node_registry.lua")
+dofile(pipeworks.modpath..logicdir.."abms.lua")
+dofile(pipeworks.modpath..logicdir.."abm_register.lua")
+dofile(pipeworks.modpath..logicdir.."flowable_node_registry_install.lua")
 
+if pipeworks.enable_pipes then
+	dofile(pipeworks.modpath.."/pipes.lua")
+end
+if pipeworks.enable_pipe_devices then
+	dofile(pipeworks.modpath.."/devices.lua")
+end
+if pipeworks.enable_redefines then
+	dofile(pipeworks.modpath.."/compat-chests.lua")
+end
+if pipeworks.enable_redefines and (core.get_modpath("default") or core.get_modpath("hades_core")) then
+	dofile(pipeworks.modpath.."/compat-furnaces.lua")
+end
+if pipeworks.enable_redefines and core.get_modpath("mcl_furnaces") then
+	dofile(pipeworks.modpath.."/mcl_furnaces.lua")
+end
+if pipeworks.enable_autocrafter then
+	dofile(pipeworks.modpath.."/autocrafter.lua")
+end
+
+dofile(pipeworks.modpath.."/crafts.lua")
+
+core.register_alias("pipeworks:pipe", "pipeworks:pipe_110000_empty")
+
+-- Unified Inventory categories integration
+
+if core.get_modpath("unified_inventory") and unified_inventory.registered_categories then
+	if not unified_inventory.registered_categories["automation"] then
+		local symbol
+		if pipeworks.enable_lua_tube then
+			symbol = "pipeworks:lua_tube000000"
+		else
+			symbol = "pipeworks:mese_filter" -- fallback when lua tube isn't registered
+		end
+		unified_inventory.register_category("automation", {
+			symbol = symbol,
+			label = "Automation components"
+		})
+	end
+	unified_inventory.add_category_items("automation", pipeworks.ui_cat_tube_list)
+end
+
+core.log("info", "Pipeworks loaded!")

item_transport.lua

@@ -1,16 +1,59 @@
+local luaentity = pipeworks.luaentity
+local enable_max_limit = core.settings:get_bool("pipeworks_enable_items_per_tube_limit")
+local max_tube_limit = tonumber(core.settings:get("pipeworks_max_items_per_tube")) or 30
+if enable_max_limit == nil then enable_max_limit = true end
+
+if pipeworks.enable_item_tags then
+	local max_tag_length = tonumber(core.settings:get("pipeworks_max_item_tag_length")) or 32
+	local max_tags = tonumber(core.settings:get("pipeworks_max_item_tags")) or 16
+
+	function pipeworks.sanitize_tags(tags)
+		if type(tags) == "string" then
+			tags = tags:split(",")
+		end
+		local sanitized = {}
+		for i, tag in ipairs(tags) do
+			if type(tag) == "string" then
+				tag = tag:gsub("[%s,]", "")  -- Remove whitespace and commas
+				tag = tag:gsub("%$%b%{%}", "")  -- Remove special ${key} values
+				if tag ~= "" then
+					table.insert(sanitized, tag:sub(1, max_tag_length))
+				end
+			end
+			if #sanitized >= max_tags then
+				break
+			end
+		end
+		return sanitized
+	end
+end
+
 function pipeworks.tube_item(pos, item)
 	error("obsolete pipeworks.tube_item() called; change caller to use pipeworks.tube_inject_item() instead")
 end
 
-function pipeworks.tube_inject_item(pos, start_pos, velocity, item)
+function pipeworks.tube_inject_item(pos, start_pos, velocity, item, owner, tags)
 	-- Take item in any format
 	local stack = ItemStack(item)
+	local to_pos = vector.add(pos, velocity)
+	local def = core.registered_nodes[core.get_node(to_pos).name]
+	if not def or not def.groups or not (def.groups.tube
+			or def.groups.tubedevice or def.groups.tubedevice_receiver) then
+		local dropped_item = core.add_item(pos, stack)
+		if dropped_item then
+			dropped_item:set_velocity(vector.multiply(velocity, 5))
+		end
+		return
+	end
 	local obj = luaentity.add_entity(pos, "pipeworks:tubed_item")
-	obj:set_item(stack:to_string())
-	obj.start_pos = vector.new(start_pos)
-	obj:setvelocity(velocity)
-	--obj:set_color("red") -- todo: this is test-only code
-	return obj
+	if obj then
+		obj:set_item(stack:to_string())
+		obj.start_pos = vector.new(start_pos)
+		obj:set_velocity(velocity)
+		obj.owner = owner
+		obj.tags = tags
+		return obj
+	end
 end
 
 -- adding two tube functions
@@ -19,7 +62,7 @@ end
 -- both optional w/ sensible defaults and fallback to normal allow_* function
 -- XXX: possibly change insert_object to insert_item
 
-local adjlist={{x=0,y=0,z=1},{x=0,y=0,z=-1},{x=0,y=1,z=0},{x=0,y=-1,z=0},{x=1,y=0,z=0},{x=-1,y=0,z=0}}
+local default_adjlist={{x=0,y=0,z=1},{x=0,y=0,z=-1},{x=0,y=1,z=0},{x=0,y=-1,z=0},{x=1,y=0,z=0},{x=-1,y=0,z=0}}
 
 function pipeworks.notvel(tbl, vel)
 	local tbl2={}
@@ -29,12 +72,120 @@ function pipeworks.notvel(tbl, vel)
 	return tbl2
 end
 
-local function go_next(pos, velocity, stack)
+local tube_item_count = {}
+
+core.register_globalstep(function(dtime)
+	if not luaentity.entities then
+		return
+	end
+	tube_item_count = {}
+	for _, entity in pairs(luaentity.entities) do
+		if entity.name == "pipeworks:tubed_item" then
+			local h = core.hash_node_position(vector.round(entity._pos))
+			tube_item_count[h] = (tube_item_count[h] or 0) + 1
+		end
+	end
+end)
+
+
+
+-- tube overload mechanism:
+-- when the tube's item count (tracked in the above tube_item_count table)
+-- exceeds the limit configured per tube, replace it with a broken one.
+
+function pipeworks.break_tube(pos)
+	local node = core.get_node(pos)
+	if core.get_item_group(node.name, "tube") ~= 1 then return end
+	local meta = core.get_meta(pos)
+	meta:set_string("the_tube_was", core.serialize(node))
+	core.swap_node(pos, {name = "pipeworks:broken_tube_1"})
+	pipeworks.scan_for_tube_objects(pos)
+end
+
+local crunch_tube = function(pos, cnode, cmeta)
+	if enable_max_limit then
+		local h = core.hash_node_position(pos)
+		local itemcount = tube_item_count[h] or 0
+		if itemcount > max_tube_limit then
+			pipeworks.logger("Warning - a tube at "..core.pos_to_string(pos).." broke due to too many items ("..itemcount..")")
+			pipeworks.break_tube(pos)
+		end
+	end
+end
+
+
+
+-- compatibility behaviour for the existing can_go() callbacks,
+-- which can only specify a list of possible positions.
+local function go_next_compat(pos, cnode, cmeta, cycledir, vel, stack, owner, tags)
 	local next_positions = {}
 	local max_priority = 0
-	local cnode = minetest.get_node(pos)
-	local cmeta = minetest.get_meta(pos)
 	local can_go
+
+	local def = core.registered_nodes[cnode.name]
+	if def and def.tube and def.tube.can_go then
+		can_go = def.tube.can_go(pos, cnode, vel, stack, tags)
+	else
+		local adjlist_string = core.get_meta(pos):get_string("adjlist")
+		local adjlist = core.deserialize(adjlist_string) or default_adjlist -- backward compat: if not found, use old behavior: all directions
+
+		can_go = pipeworks.notvel(adjlist, vel)
+	end
+	-- can_go() is expected to return an array-like table of candidate offsets.
+	-- for each one, look at the node at that offset and determine if it can accept the item.
+	-- also note the prioritisation:
+	-- if any tube is found with a greater priority than previously discovered,
+	-- then the valid positions are reset and and subsequent positions under this are skipped.
+	-- this has the effect of allowing only equal priorities to co-exist.
+	for _, vect in ipairs(can_go) do
+		local npos = vector.add(pos, vect)
+		pipeworks.load_position(npos)
+		local node = core.get_node(npos)
+		local reg_node = core.registered_nodes[node.name]
+		if reg_node then
+			local tube_def = reg_node.tube
+			local tubedevice = core.get_item_group(node.name, "tubedevice")
+			local tube_priority = (tube_def and tube_def.priority) or 100
+			if tubedevice > 0 and tube_priority >= max_priority then
+				if not tube_def or not tube_def.can_insert or
+						tube_def.can_insert(npos, node, stack, vect, owner) then
+					if tube_priority > max_priority then
+						max_priority = tube_priority
+						next_positions = {}
+					end
+					next_positions[#next_positions + 1] = {pos = npos, vect = vect}
+				end
+			end
+		end
+	end
+
+	-- indicate not found if no valid rules were picked up,
+	-- and don't change the counter.
+	if not next_positions[1] then
+		return cycledir, false, nil, nil
+	end
+
+	-- otherwise rotate to the next output direction and return that
+	local n = (cycledir % (#next_positions)) + 1
+	local new_velocity = vector.multiply(next_positions[n].vect, vel.speed)
+	return n, true, new_velocity, nil
+end
+
+
+
+
+-- function called by the on_step callback of the pipeworks tube luaentity.
+-- the routine is passed the current node position, velocity, itemstack,
+-- and owner name.
+-- returns three values:
+-- * a boolean "found destination" status;
+-- * a new velocity vector that the tubed item should use, or nil if not found;
+-- * a "multi-mode" data table (or nil if N/A) where a stack was split apart.
+--	if this is not nil, the luaentity spawns new tubed items for each new fragment stack,
+--	then deletes itself (i.e. the original item stack).
+local function go_next(pos, velocity, stack, owner, tags)
+	local cnode = core.get_node(pos)
+	local cmeta = core.get_meta(pos)
 	local speed = math.abs(velocity.x + velocity.y + velocity.z)
 	if speed == 0 then
 		speed = 1
@@ -48,46 +199,31 @@ local function go_next(pos, velocity, stack)
 		speed = 1
 	end
 	vel.speed = speed
-	if minetest.registered_nodes[cnode.name] and minetest.registered_nodes[cnode.name].tube and minetest.registered_nodes[cnode.name].tube.can_go then
-		can_go = minetest.registered_nodes[cnode.name].tube.can_go(pos, cnode, vel, stack)
-	else
-		can_go = pipeworks.notvel(adjlist, vel)
-	end
-	for _, vect in ipairs(can_go) do
-		local npos = vector.add(pos, vect)
-		minetest.load_position(npos)
-		local node = minetest.get_node(npos)
-		local reg_node = minetest.registered_nodes[node.name]
-		if reg_node then
-			local tube_def = reg_node.tube
-			local tubedevice = minetest.get_item_group(node.name, "tubedevice")
-			local tube_priority = (tube_def and tube_def.priority) or 100
-			if tubedevice > 0 and tube_priority >= max_priority then
-				if not tube_def or not tube_def.can_insert or
-						tube_def.can_insert(npos, node, stack, vect) then
-					if tube_priority > max_priority then
-						max_priority = tube_priority
-						next_positions = {}
-					end
-					next_positions[#next_positions + 1] = {pos = npos, vect = vect}
-				end
-			end
-		end
-	end
 
-	if not next_positions[1] then
-		return false, nil
-	end
+	crunch_tube(pos, cnode, cmeta)
+	-- cycling of outputs:
+	-- an integer counter is kept in each pipe's metadata,
+	-- which allows tracking which output was previously chosen.
+	-- note reliance on get_int returning 0 for uninitialised.
+	local cycledir = cmeta:get_int("tubedir")
 
-	local n = (cmeta:get_int("tubedir") % (#next_positions)) + 1
+	-- pulled out and factored out into go_next_compat() above.
+	-- n is the new value of the cycle counter.
+	-- XXX: this probably needs cleaning up after being split out,
+	-- seven args is a bit too many
+	local n, found, new_velocity, multimode = go_next_compat(pos, cnode, cmeta, cycledir, vel, stack, owner, tags)
+
+	-- if not using output cycling,
+	-- don't update the field so it stays the same for the next item.
 	if pipeworks.enable_cyclic_mode then
 		cmeta:set_int("tubedir", n)
 	end
-	local new_velocity = vector.multiply(next_positions[n].vect, vel.speed)
-	return true, new_velocity
+	return found, new_velocity, multimode
 end
 
-minetest.register_entity("pipeworks:tubed_item", {
+
+
+core.register_entity("pipeworks:tubed_item", {
 	initial_properties = {
 		hp_max = 1,
 		physical = false,
@@ -104,6 +240,7 @@ minetest.register_entity("pipeworks:tubed_item", {
 
 	from_data = function(self, itemstring)
 		local stack = ItemStack(itemstring)
+		--[[
 		local itemtable = stack:to_table()
 		local itemname = nil
 		if itemtable then
@@ -111,16 +248,17 @@ minetest.register_entity("pipeworks:tubed_item", {
 		end
 		local item_texture = nil
 		local item_type = ""
-		if minetest.registered_items[itemname] then
-			item_texture = minetest.registered_items[itemname].inventory_image
-			item_type = minetest.registered_items[itemname].type
+		if core.registered_items[itemname] then
+			item_texture = core.registered_items[itemname].inventory_image
+			item_type = core.registered_items[itemname].type
 		end
+		--]]
 		self.object:set_properties({
 			is_visible = true,
 			textures = {stack:get_name()}
 		})
 		local def = stack:get_definition()
-		self.object:setyaw((def and def.type == "node") and 0 or math.pi * 0.25)
+		self.object:set_yaw((def and def.type == "node") and 0 or math.pi * 0.25)
 	end,
 
 	get_staticdata = luaentity.get_staticdata,
@@ -132,13 +270,13 @@ minetest.register_entity("pipeworks:tubed_item", {
 			self.object:remove()
 			return
 		end
-		local item = minetest.deserialize(staticdata)
-		pipeworks.tube_inject_item(self.object:getpos(), item.start_pos, item.velocity, item.itemstring)
+		local item = core.deserialize(staticdata)
+		pipeworks.tube_inject_item(self.object:get_pos(), item.start_pos, item.velocity, item.itemstring)
 		self.object:remove()
 	end,
 })
 
-minetest.register_entity("pipeworks:color_entity", {
+core.register_entity("pipeworks:color_entity", {
 	initial_properties = {
 		hp_max = 1,
 		physical = false,
@@ -165,12 +303,19 @@ minetest.register_entity("pipeworks:color_entity", {
 	on_activate = luaentity.on_activate,
 })
 
+-- see below for usage:
+-- determine if go_next returned a multi-mode set.
+local is_multimode = function(v)
+	return (type(v) == "table") and (v.__multimode)
+end
+
 luaentity.register_entity("pipeworks:tubed_item", {
 	itemstring = '',
 	item_entity = nil,
 	color_entity = nil,
 	color = nil,
 	start_pos = nil,
+	tags = nil,
 
 	set_item = function(self, item)
 		local itemstring = ItemStack(item):to_string() -- Accept any input format
@@ -200,17 +345,13 @@ luaentity.register_entity("pipeworks:tubed_item", {
 	end,
 
 	on_step = function(self, dtime)
+		local pos = self:get_pos()
 		if self.start_pos == nil then
-			local pos = self:getpos()
 			self.start_pos = vector.round(pos)
-			self:setpos(pos)
+			self:set_pos(pos)
 		end
 
-		local pos = self:getpos()
-		local stack = ItemStack(self.itemstring)
-		local drop_pos
-
-		local velocity = self:getvelocity()
+		local velocity = self:get_velocity()
 
 		local moved = false
 		local speed = math.abs(velocity.x + velocity.y + velocity.z)
@@ -219,18 +360,26 @@ luaentity.register_entity("pipeworks:tubed_item", {
 			moved = true
 		end
 		local vel = {x = velocity.x / speed, y = velocity.y / speed, z = velocity.z / speed, speed = speed}
+		local moved_by = vector.distance(pos, self.start_pos)
 
-		if vector.distance(pos, self.start_pos) >= 1 then
+		if moved_by >= 1 then
 			self.start_pos = vector.add(self.start_pos, vel)
 			moved = true
 		end
 
-		minetest.load_position(self.start_pos)
-		local node = minetest.get_node(self.start_pos)
-		if moved and minetest.get_item_group(node.name, "tubedevice_receiver") == 1 then
+		if not moved then
+			return
+		end
+
+		local stack = ItemStack(self.itemstring)
+
+		pipeworks.load_position(self.start_pos)
+		local node = core.get_node(self.start_pos)
+		if core.get_item_group(node.name, "tubedevice_receiver") == 1 then
 			local leftover
-			if minetest.registered_nodes[node.name].tube and minetest.registered_nodes[node.name].tube.insert_object then
-				leftover = minetest.registered_nodes[node.name].tube.insert_object(self.start_pos, node, stack, vel)
+			local def = core.registered_nodes[node.name]
+			if def.tube and def.tube.insert_object then
+				leftover = def.tube.insert_object(self.start_pos, node, stack, vel, self.owner)
 			else
 				leftover = stack
 			end
@@ -239,48 +388,75 @@ luaentity.register_entity("pipeworks:tubed_item", {
 				return
 			end
 			velocity = vector.multiply(velocity, -1)
-			self:setvelocity(velocity)
+			self:set_pos(vector.subtract(self.start_pos, vector.multiply(vel, moved_by - 1)))
+			self:set_velocity(velocity)
 			self:set_item(leftover:to_string())
 			return
 		end
 
-		if moved then
-			local found_next, new_velocity = go_next(self.start_pos, velocity, stack) -- todo: color
-			if not found_next then
-				drop_pos = minetest.find_node_near(vector.add(self.start_pos, velocity), 1, "air")
-				if drop_pos then
-					-- Using add_item instead of item_drop since this makes pipeworks backward
-					-- compatible with Minetest 0.4.13.
-					-- Using item_drop here makes Minetest 0.4.13 crash.
-					minetest.add_item(drop_pos, stack)
+		local tags
+		if pipeworks.enable_item_tags then
+			tags = self.tags or {}
+		end
+		local found_next, new_velocity, multimode = go_next(self.start_pos, velocity, stack, self.owner, tags) -- todo: color
+		if pipeworks.enable_item_tags then
+			self.tags = #tags > 0 and tags or nil
+		end
+		local rev_vel = vector.multiply(velocity, -1)
+		local rev_dir = vector.direction(self.start_pos,vector.add(self.start_pos,rev_vel))
+		local rev_node = core.get_node(vector.round(vector.add(self.start_pos,rev_dir)))
+		local tube_present = core.get_item_group(rev_node.name,"tubedevice") == 1
+		if not found_next then
+			if pipeworks.drop_on_routing_fail or not tube_present or
+					core.get_item_group(rev_node.name,"tube") ~= 1 then
+				-- Using add_item instead of item_drop since this makes pipeworks backward
+				-- compatible with Minetest 0.4.13.
+				-- Using item_drop here makes Minetest 0.4.13 crash.
+				local dropped_item = core.add_item(self.start_pos, stack)
+				if dropped_item then
+					dropped_item:set_velocity(vector.multiply(velocity, 5))
 					self:remove()
-					return
 				end
+				return
+			else
+				velocity = vector.multiply(velocity, -1)
+				self:set_pos(vector.subtract(self.start_pos, vector.multiply(vel, moved_by - 1)))
+				self:set_velocity(velocity)
 			end
+		elseif is_multimode(multimode) then
+			-- create new stacks according to returned data.
+			local s = self.start_pos
+			for _, split in ipairs(multimode) do
+				pipeworks.tube_inject_item(s, s, split.velocity, split.itemstack, self.owner)
+			end
+			-- remove ourself now the splits are sent
+			self:remove()
+			return
+		end
 
-			if new_velocity and not vector.equals(velocity, new_velocity) then
-				self:setpos(self.start_pos)
-				self:setvelocity(new_velocity)
-			end
+		if new_velocity and not vector.equals(velocity, new_velocity) then
+			local nvelr = math.abs(new_velocity.x + new_velocity.y + new_velocity.z)
+			self:set_pos(vector.add(self.start_pos, vector.multiply(new_velocity, (moved_by - 1) / nvelr)))
+			self:set_velocity(new_velocity)
 		end
 	end
 })
 
-if minetest.get_modpath("mesecons_mvps") then
+if core.get_modpath("mesecons_mvps") then
 	mesecon.register_mvps_unmov("pipeworks:tubed_item")
 	mesecon.register_mvps_unmov("pipeworks:color_entity")
 	mesecon.register_on_mvps_move(function(moved_nodes)
 		local moved = {}
 		for _, n in ipairs(moved_nodes) do
-			moved[minetest.hash_node_position(n.oldpos)] = vector.subtract(n.pos, n.oldpos)
+			moved[core.hash_node_position(n.oldpos)] = vector.subtract(n.pos, n.oldpos)
 		end
-		for id, entity in pairs(luaentity.entities) do
+		for _, entity in pairs(luaentity.entities) do
 			if entity.name == "pipeworks:tubed_item" then
-				local pos = entity:getpos()
+				local pos = entity:get_pos()
 				local rpos = vector.round(pos)
-				local dir = moved[minetest.hash_node_position(rpos)]
+				local dir = moved[core.hash_node_position(rpos)]
 				if dir then
-					entity:setpos(vector.add(pos, dir))
+					entity:set_pos(vector.add(pos, dir))
 					entity.start_pos = vector.add(entity.start_pos, dir)
 				end
 			end

legacy.lua

@@ -1,59 +0,0 @@
-
-if not minetest.get_modpath("auto_tree_tap") and 
-  minetest.get_modpath("technic") then
-
-	minetest.register_abm({
-		nodenames = { "auto_tree_tap:off", "auto_tree_tap:on" },
-		chance = 1,
-		interval = 1,
-		action = function(pos, node, active_object_count, active_object_count_wider)
-			local fdir = node.param2
-			local meta = minetest.get_meta(pos)
-			local inv = meta:get_inventory()
-			inv:set_size("pick", 1)
-			inv:set_size("ghost_pick", 1)
-			inv:set_size("main", 100)
-			minetest.set_node(pos, {name = "pipeworks:nodebreaker_off", param2 = fdir})
-			minetest.registered_nodes["pipeworks:nodebreaker_off"].on_punch(pos, node)
-			inv:set_stack("pick", 1, ItemStack("technic:treetap"))
-		end
-	})
-
-	minetest.register_node(":auto_tree_tap:off", {
-		description = "Auto-Tap",
-		tiles = {"pipeworks_nodebreaker_top_off.png","pipeworks_nodebreaker_bottom_off.png","pipeworks_nodebreaker_side2_off.png","pipeworks_nodebreaker_side1_off.png",
-			"pipeworks_nodebreaker_back.png","pipeworks_nodebreaker_front_off.png"},
-		is_ground_content = true,
-		paramtype2 = "facedir",
-		groups = {snappy=2,choppy=2,oddly_breakable_by_hand=2, mesecon = 2,tubedevice=1, not_in_creative_inventory=1 },
-		sounds = default.node_sound_stone_defaults(),
-		tube = {connect_sides={back=1}},
-		on_construct = function(pos)
-			local meta = minetest.get_meta(pos)
-			local inv = meta:get_inventory()
-			inv:set_size("pick", 1)
-			inv:set_stack("pick", 1, ItemStack("default:pick_mese"))
-		end,
-		after_place_node = function (pos, placer)
-			pipeworks.scan_for_tube_objects(pos, placer)
-			local placer_pos = placer:getpos()
-		
-			--correct for the player's height
-			if placer:is_player() then placer_pos.y = placer_pos.y + 1.5 end
-		
-			--correct for 6d facedir
-			if placer_pos then
-				local dir = {
-					x = pos.x - placer_pos.x,
-					y = pos.y - placer_pos.y,
-					z = pos.z - placer_pos.z
-				}
-				local node = minetest.get_node(pos)
-				node.param2 = minetest.dir_to_facedir(dir, true)
-				minetest.set_node(pos, node)
-				minetest.log("action", "real (6d) facedir: " .. node.param2)
-			end
-		end,
-		after_dig_node = pipeworks.scan_for_tube_objects,
-	})
-end

locale/pipeworks.fr.tr

@@ -0,0 +1,119 @@
+# textdomain: pipeworks
+
+# License: CC-by-SA 4.0
+# Author: Louis Royer <4259825-lroyer@users.noreply.gitlab.com>
+
+## generic interaction
+Set=Fixer
+Close=Fermer
+
+## digilines interfacing
+Channel=Canal
+
+## init
+Allow splitting incoming stacks from tubes=Séparer les piles venant des tubes
+
+## autocrafter
+Unknown item=Item inconnu
+unconfigured Autocrafter: unknown recipe=Autocrafteur non-configuré : recette inconnue
+unconfigured Autocrafter=Autocrafteur non-configuré
+'@1' Autocrafter (@2)=Autocrafteur de '@1' (@2)
+Save=Valider
+paused '@1' Autocrafter=Autocrafteur de '@1' en pause
+Autocrafter=Autocrafteur
+
+## compat-furnaces
+Allow splitting incoming material (not fuel) stacks from tubes=Séparer les piles (sauf le carburant) venant des tubes
+
+## decorative tubes
+Airtight steelblock embedded tube=Tube hermétique intégré à un bloc d’acier
+Airtight panel embedded tube=Tube hermétique intégré à un panneau
+
+## devices
+Pump/Intake Module=Module de pompage et d’admission
+Valve=Vanne
+Decorative grating=Grillage décoratif
+Spigot outlet=Sortie de robinet
+Airtight Pipe entry/exit=Extrémité de tube hermétique
+Flow Sensor=Détecteur de débit
+Flow sensor (on)=Détecteur de débit (actif)
+empty=vide
+@1% full=plein à @1 %
+Expansion Tank (@1)=Réservoir d’expansion (@1)
+Fluid Storage Tank (@1)=Réservoir de liquides (@1)
+Fountainhead=Tête de fontaine
+Straight-only Pipe=Tuyau droit
+
+## filter-injector
+(slot #@1 next)=(slot suivant : #@1)
+@1 Filter-Injector=Filtre-injecteur @1
+Sequence slots by Priority=Ordonner par priorité
+Sequence slots Randomly=Ordonner aléatoirement
+Sequence slots by Rotation=Ordonner en rotation
+Exact match - off=Filtrage inactif
+Exact match - on=Filtrage actif
+Prefer item types:=Items à filtrer :
+Itemwise=par item
+Stackwise=par piles d’items
+Digiline=digiline
+
+## legacy
+Auto-Tap=Robinet d’arbre automatique
+
+## pipes
+Pipe Segment=Segment de tuyau
+Pipe Segment (legacy)=Segment de tuyau (obsolète)
+
+
+## routing tubes
+Pneumatic tube segment=Segment de tuyau pneumatique
+Broken Tube=Tuyau cassé
+High Priority Tube Segment=Segment de tuyau haute priorité
+Accelerating Pneumatic Tube Segment=Segment de tuyau pneumatique accélérante
+Crossing Pneumatic Tube Segment=Intersection de tuyau pneumatique
+One way tube=Tuyau unidirectionnel
+
+## signal tubes
+Detecting Pneumatic Tube Segment on=Segment de tuyau pneumatique avec détecteur (actif)
+Detecting Pneumatic Tube Segment=Segment de tuyau pneumatique avec détecteur
+Digiline Detecting Pneumatic Tube Segment=Segment de tuyau pneumatique avec détecteur digiline
+Digiline Detecting Tube=Tuyau avec détecteur digiline
+Conducting Pneumatic Tube Segment=Segment de tuyau pneumatique conducteur
+Conducting Pneumatic Tube Segment on=Segment de tuyau pneumatique conducteur actif
+Digiline Conducting Pneumatic Tube Segment=Segment de tuyau pneumatique conducteur digiline
+Mesecon and Digiline Conducting Pneumatic Tube Segment=Segment de tuyau pneumatique conducteur mesecon et digiline
+Mesecon and Digiline Conducting Pneumatic Tube Segment on=Segment de tuyau pneumatique conducteur mesecon et digiline (actif)
+
+## sorting tubes
+Sorting Pneumatic Tube Segment=Segment de tuyau pneumatique triant
+Sorting pneumatic tube=Tuyau pneumatique triant
+
+## teleport tube
+Receive=Reception
+Channels are public by default=Les canaux sont publics par défaut
+Use <player>:<channel> for fully private channels=Utilisez <joueur>:<canal> pour un canal entièrement privé
+Use <player>;<channel> for private receivers=Utilisez <joueur>;<canal> pour une réception privée
+Teleporting Pneumatic Tube Segment=Segment de tuyau pneumatique téléporteur
+Teleporting Tube=Tuyau pneumatique téléporteur
+Unconfigured Teleportation Tube=Tuyau téléporteur non-configuré
+Sorry, channel '@1' is reserved for exclusive use by @2=Désolé, le canal '@1' est réservé exclusivement à l’utilisateur @2.
+Sorry, receiving from channel '@1' is reserved for @2=Désolé, la réception depuis le canal '@1' est réservée pour @2.
+Teleportation Tube @1 on '@2'=Tuyau de téléportation @1 sur '@2'
+
+## trashcan
+Trash Can=Poubelle
+
+## tube registration
+Pneumatic tube segment (legacy)=Segment de tuyau pneumatique (obsolète)
+
+## vacuum tubes
+Radius=Rayon
+Vacuuming Pneumatic Tube Segment=Segment de tuyau pneumatique aspirant
+Adjustable Vacuuming Tube=Tuyau pneumatique aspirant réglable
+Adjustable Vacuuming Pneumatic Tube Segment=Segment de tuyau pneumatique aspirant réglable
+Adjustable Vacuuming Pneumatic Tube Segment (@1m)=Segment de tuyau pneumatique aspirant réglable (@1 m)
+
+## wielder
+Node Breaker=Casseur de blocs
+Deployer=Poseur de blocs
+Dispenser=Distributeur

locale/pipeworks.ru.tr

@@ -0,0 +1,121 @@
+# textdomain: pipeworks
+
+# License: CC-by-SA 4.0
+# Author: VinAdmin ovvitalik@gmail.com
+
+## generic interaction
+Set=Установить
+Cancel=Отмена
+
+## digilines interfacing
+Channel=Канал
+
+## init
+Allow splitting incoming stacks from tubes=Разрешить разделение входящих стопок из трубок
+
+## autocrafter
+Unknown item=Неизвестный предмет
+unconfigured Autocrafter: unknown recipe=ненастроенный автокрафтер: неизвестный рецепт
+unconfigured Autocrafter=ненастроенный автокрафтер
+'@1' Autocrafter (@2)='@1' Автокрафтер (@2)
+Save=Сохранить
+paused '@1' Autocrafter=приостановлено '@1' Автокрафтер
+Autocrafter=Автокрафтер
+
+## compat-furnaces
+Allow splitting incoming material (not fuel) stacks from tubes=Разрешить разделение стопок поступающего материала (не топлива) из трубок.
+
+## decorative tubes
+Airtight steelblock embedded tube=Герметичная встроенная трубка из стального блока
+Airtight panel embedded tube=Герметичная встроенная в панель трубка
+
+## devices
+Pump/Intake Module=Модуль насоса/впуска
+Valve=Клапан
+Decorative grating=Декоративная решетка
+Spigot outlet=Выходной патрубок
+Airtight Pipe entry/exit=Вход/выход герметичной трубы
+Flow Sensor=Датчик потока
+Flow sensor (on)=Датчик расхода (вкл.)
+empty=пустой
+@1% full=@1% заполнено
+Expansion Tank (@1)=Расширительный бак (@1)
+Fluid Storage Tank (@1)=Резервуар для хранения жидкости (@1)
+Fountainhead=Источник
+Straight-only Pipe=Только прямая труба
+
+## filter-injector
+(slot #@1 next)=(слот #@1 следующий)
+@1 Filter-Injector=@1 фильтр-инжектор
+Sequence slots by Priority=Последовательность слотов по приоритету
+Sequence slots Randomly=Слоты последовательности Случайный
+Sequence slots by Rotation=Последовательность слотов по вращению
+Exact match - off=Точное совпадение – выключено
+Exact match - on=Точное совпадение - включено
+Prefer item types:=Предпочитаете типы предметов:
+Itemwise=По пунктам
+Stackwise=Стекообразно
+Digiline=Диджилайн
+
+## legacy
+Auto-Tap=Авто-нажатие
+
+## pipes
+Pipe Segment=Сегмент трубы
+Pipe Segment (legacy)=Сегмент трубы (устаревший)
+
+
+## routing tubes
+Pneumatic tube segment=Сегмент пневматической трубки
+Broken Tube=Сломанная трубка
+High Priority Tube Segment=Сегмент трубы с высоким приоритетом
+Accelerating Pneumatic Tube Segment=Ускорительный сегмент пневматической трубки
+Crossing Pneumatic Tube Segment=Пересечение сегмента пневматической трубы
+One way tube=Односторонняя трубка
+
+## signal tubes
+Detecting Pneumatic Tube Segment on=Обнаружение сегмента пневматической трубки включено
+Detecting Pneumatic Tube Segment=Обнаружение сегмента пневматической трубки
+Digiline Detecting Pneumatic Tube Segment=Digiline обнаруживает сегмент пневматической трубки
+Digiline Detecting Tube=Детекторная трубка Digiline
+Conducting Pneumatic Tube Segment=Проводящий сегмент пневматической трубки
+Conducting Pneumatic Tube Segment on=Проводящий сегмент пневматической трубки на
+Digiline Conducting Pneumatic Tube Segment=Сегмент проводящей пневматической трубки Digiline
+Mesecon and Digiline Conducting Pneumatic Tube Segment=Сегмент токопроводящей пневматической трубки Mesecon и Digiline
+Mesecon and Digiline Conducting Pneumatic Tube Segment on=Сегмент проводящей пневматической трубки Mesecon и Digiline на
+Tag Sorting Pneumatic Tube Segment=Сегмент пневматической трубки для сортировки тегов
+Lua controlled Tube=Трубка, управляемая Lua
+
+## sorting tubes
+Sorting Pneumatic Tube Segment=Сортировка сегментов пневматической трубки
+Sorting pneumatic tube=Сортировочная пневматическая труба
+
+## teleport tube
+Receive=Получить
+Channels are public by default=По умолчанию каналы являются общедоступными
+Use <player>:<channel> for fully private channels=Используйте <игрок>:<канал> для полностью приватных каналов
+Use <player>;<channel> for private receivers=Используйте <игрок>;<канал> для частных приемников
+Teleporting Pneumatic Tube Segment=Сегмент пневматической трубы для телепортации
+Teleporting Tube=Телепортационная труба
+Unconfigured Teleportation Tube=Неконфигурированная телепортационная труба
+Sorry, channel '@1' is reserved for exclusive use by @2=Извините, канал '@1' зарезервирован исключительно для использования @2
+Sorry, receiving from channel '@1' is reserved for @2=Извините, прием с канала '@1' зарезервирован для @2
+Teleportation Tube @1 on '@2'=Трубка телепортации @1 на '@2'
+
+## trashcan
+Trash Can=Мусорное ведро
+
+## tube registration
+Pneumatic tube segment (legacy)=Сегмент пневматической трубы (устаревший)
+
+## vacuum tubes
+Radius=Радиус
+Vacuuming Pneumatic Tube Segment=Сегмент пневматической трубки для вакуумирования
+Adjustable Vacuuming Tube=Регулируемая вакуумная трубка
+Adjustable Vacuuming Pneumatic Tube Segment=Регулируемый сегмент вакуумной пневматической трубки
+Adjustable Vacuuming Pneumatic Tube Segment (@1m)=Регулируемый сегмент вакуумной пневматической трубки (@1m)
+
+## wielder
+Node Breaker=Разрушитель узла
+Deployer=Развертыватель
+Dispenser=Распылитель

locale/pipeworks.zh_CN.tr

@@ -0,0 +1,117 @@
+# textdomain: pipeworks
+# License: CC-by-SA 4.0
+# Author: pevernow <3450354617@qq.com>
+
+## generic interaction
+Set=
+Cancel=
+
+## digilines interfacing
+Channel=频道
+
+## init
+Allow splitting incoming stacks from tubes=允许从管道中拆分传入堆栈
+
+## autocrafter
+Unknown item=通道
+unconfigured Autocrafter: unknown recipe=未配置的自动工作台: 未知配方
+unconfigured Autocrafter=未配置的自动工作台
+'@1' Autocrafter (@2)=自动工作台 '@1' (@2)
+Save=保存
+paused '@1' Autocrafter=暂停的自动工作台
+Autocrafter=自动工作台
+
+## compat-furnaces
+Allow splitting incoming material (not fuel) stacks from tubes=允许从管子中分离进来的材料（不是燃料）堆
+
+## decorative tubes
+Airtight steelblock embedded tube=密封嵌入式铁块管道
+Airtight panel embedded tube=密封嵌入式片状管道
+
+## devices
+Pump/Intake Module=泵/进气模块
+Valve=阀门
+Decorative grating=Decorative grating
+Spigot outlet=龙头
+Airtight Pipe entry/exit=密闭管进/出
+Flow Sensor=流量传感器
+Flow sensor (on)=流量传感器（上）
+empty=空的
+@1% full=满的@1 %
+Expansion Tank (@1)=扩展水箱 (@1)
+Fluid Storage Tank (@1)=储液罐 (@1)
+Fountainhead=源泉
+Straight-only Pipe=直管
+## filter-injector
+(slot #@1 next)=(下一个插槽 : #@1)
+@1 Filter-Injector=@1取物器
+Sequence slots by Priority=优先顺序排列
+Sequence slots Randomly=随机排列时隙
+Sequence slots by Rotation=旋转顺序槽
+Exact match - off=完全匹配-关闭
+Exact match - on=完全匹配-开启
+Prefer item types:=偏好物品类型 :
+Itemwise=逐项
+Stackwise=堆叠方式
+Digiline=Digiline
+
+## legacy
+Auto-Tap=自动轴阀
+
+## pipes
+Pipe Segment=管道
+Pipe Segment (legacy)=管道（旧版）
+
+
+## routing tubes
+Pneumatic tube segment=普通管道
+Broken Tube=断管
+High Priority Tube Segment=高优先级管段
+Accelerating Pneumatic Tube Segment=加速管道
+Crossing Pneumatic Tube Segment=定向管道
+One way tube=单向管
+
+## signal tubes
+Detecting Pneumatic Tube Segment on=检测管道（运行中）
+Detecting Pneumatic Tube Segment=检测管道
+Digiline Detecting Pneumatic Tube Segment=Digiline检测管道
+Digiline Detecting Tube=Digiline检测管
+Conducting Pneumatic Tube Segment=传导管道
+Conducting Pneumatic Tube Segment on=传导管道（运行中）
+Digiline Conducting Pneumatic Tube Segment=Digiline传导式气动管道
+Mesecon and Digiline Conducting Pneumatic Tube Segment=Mesecon和Digiline传导管道
+Mesecon and Digiline Conducting Pneumatic Tube Segment on=Mesecon和Digiline传导管道（运行中）
+
+## sorting tubes
+Sorting Pneumatic Tube Segment=分类管道
+Sorting pneumatic tube=分类管道
+
+## teleport tube
+Receive=接收
+Channels are public by default=频道默认为公开
+Use <player>:<channel> for fully private channels=将<player>:<channel>用于完全私人的频道
+Use <player>;<channel> for private receivers=使用<player>;<channel>作为私人接收器
+Teleporting Pneumatic Tube Segment=传送管道
+Teleporting Tube=
+Unconfigured Teleportation Tube=未配置的传送管道
+Sorry, channel '@1' is reserved for exclusive use by @2=抱歉，频道‘@1’保留供‘@2’专用
+Sorry, receiving from channel '@1' is reserved for @2=抱歉，从频道'@1'接收的内容已保留给'@2'
+Teleportation Tube @1 on '@2'=传送管'@1'在'@2'上
+
+## trashcan
+Trash Can=垃圾箱
+
+## tube registration
+Pneumatic tube segment (legacy)=普通管道（旧式）
+
+## vacuum tubes
+Radius=
+Vacuuming Pneumatic Tube Segment=拾取管道
+Adjustable Vacuuming Tube=
+Adjustable Vacuuming Pneumatic Tube Segment=高级拾取管道
+Adjustable Vacuuming Pneumatic Tube Segment (@1m)=高级拾取管道(@1m)
+
+## wielder
+Node Breaker=方块破坏器
+Deployer=放置器
+Dispenser=投掷器

locale/template.txt

@@ -0,0 +1,119 @@
+# textdomain: pipeworks
+
+# License: CC-by-SA 4.0
+# Author:
+
+## generic interaction
+Set=
+Cancel=
+
+## digilines interfacing
+Channel=
+
+## init
+Allow splitting incoming stacks from tubes=
+
+## autocrafter
+Unknown item=
+unconfigured Autocrafter: unknown recipe=
+unconfigured Autocrafter=
+'@1' Autocrafter (@2)=
+Save=
+paused '@1' Autocrafter=
+Autocrafter=
+
+## compat-furnaces
+Allow splitting incoming material (not fuel) stacks from tubes=
+
+## decorative tubes
+Airtight steelblock embedded tube=
+Airtight panel embedded tube=
+
+## devices
+Pump/Intake Module=
+Valve=
+Decorative grating=
+Spigot outlet=
+Airtight Pipe entry/exit=
+Flow Sensor=
+Flow sensor (on)=
+empty=
+@1% full=
+Expansion Tank (@1)=
+Fluid Storage Tank (@1)=
+Fountainhead=
+Straight-only Pipe=
+
+## filter-injector
+(slot #@1 next)=
+@1 Filter-Injector=
+Sequence slots by Priority=
+Sequence slots Randomly=
+Sequence slots by Rotation=
+Exact match - off=
+Exact match - on=
+Prefer item types:=
+Itemwise=
+Stackwise=
+Digiline=
+
+## legacy
+Auto-Tap=
+
+## pipes
+Pipe Segment=
+Pipe Segment (legacy)=
+
+
+## routing tubes
+Pneumatic tube segment=
+Broken Tube=
+High Priority Tube Segment=
+Accelerating Pneumatic Tube Segment=
+Crossing Pneumatic Tube Segment=
+One way tube=
+
+## signal tubes
+Detecting Pneumatic Tube Segment on=
+Detecting Pneumatic Tube Segment=
+Digiline Detecting Pneumatic Tube Segment=
+Digiline Detecting Tube=
+Conducting Pneumatic Tube Segment=
+Conducting Pneumatic Tube Segment on=
+Digiline Conducting Pneumatic Tube Segment=
+Mesecon and Digiline Conducting Pneumatic Tube Segment=
+Mesecon and Digiline Conducting Pneumatic Tube Segment on=
+
+## sorting tubes
+Sorting Pneumatic Tube Segment=
+Sorting pneumatic tube=
+
+## teleport tube
+Receive=
+Channels are public by default=
+Use <player>:<channel> for fully private channels=
+Use <player>;<channel> for private receivers=
+Teleporting Pneumatic Tube Segment=
+Teleporting Tube=
+Unconfigured Teleportation Tube=
+Sorry, channel '@1' is reserved for exclusive use by @2=
+Sorry, receiving from channel '@1' is reserved for @2=
+Teleportation Tube @1 on '@2'=
+
+## trashcan
+Trash Can=
+
+## tube registration
+Pneumatic tube segment (legacy)=
+
+## vacuum tubes
+Radius=
+Vacuuming Pneumatic Tube Segment=
+Adjustable Vacuuming Tube=
+Adjustable Vacuuming Pneumatic Tube Segment=
+Adjustable Vacuuming Pneumatic Tube Segment (@1m)=
+
+## wielder
+Node Breaker=
+Deployer=
+Dispenser=

luaentity.lua

@@ -1,34 +1,56 @@
 local max_entity_id = 1000000000000 -- If you need more, there's a problem with your code
 
-luaentity = {}
+local luaentity = {}
+pipeworks.luaentity = luaentity
 
 luaentity.registered_entities = {}
 
-local filename = minetest.get_worldpath().."/luaentities"
+local filename = core.get_worldpath().."/luaentities"
 local function read_file()
 	local f = io.open(filename, "r")
 	if f == nil then return {} end
-    	local t = f:read("*all")
-    	f:close()
+	local t = f:read("*all")
+	f:close()
 	if t == "" or t == nil then return {} end
-	return minetest.deserialize(t) or {}
+	return core.deserialize(t) or {}
 end
 
 local function write_file(tbl)
 	local f = io.open(filename, "w")
-    	f:write(minetest.serialize(tbl))
-    	f:close()
+	f:write(core.serialize(tbl))
+	f:close()
 end
 
 local function read_entities()
 	local t = read_file()
 	for _, entity in pairs(t) do
+
+		local x=entity.start_pos.x
+		local y=entity.start_pos.y
+		local z=entity.start_pos.z
+
+		x=math.max(-30912,x)
+		y=math.max(-30912,y)
+		z=math.max(-30912,z)
+		x=math.min(30927,x)
+		y=math.min(30927,y)
+		z=math.min(30927,z)
+
+		entity.start_pos.x = x
+		entity.start_pos.y = y
+		entity.start_pos.z = z
+
 		setmetatable(entity, luaentity.registered_entities[entity.name])
 	end
 	return t
 end
 
 local function write_entities()
+	if not luaentity.entities then
+		-- This can happen if crashing on startup, causing another error that
+		-- masks the original one. Return gracefully in that case instead.
+		return
+	end
 	for _, entity in pairs(luaentity.entities) do
 		setmetatable(entity, nil)
 		for _, attached in pairs(entity._attached_entities) do
@@ -42,45 +64,57 @@ local function write_entities()
 	write_file(luaentity.entities)
 end
 
-minetest.register_on_shutdown(write_entities)
+core.register_on_shutdown(write_entities)
 luaentity.entities_index = 0
 
-local function get_blockpos(pos)
-	return {x = math.floor(pos.x / 16),
-	        y = math.floor(pos.y / 16),
-	        z = math.floor(pos.z / 16)}
-end
+local move_entities_globalstep_part1
+local is_active
 
-local active_blocks = {} -- These only contain active blocks near players (i.e., not forceloaded ones)
-local handle_active_blocks_step = 2
-local handle_active_blocks_timer = 0
-minetest.register_globalstep(function(dtime)
-	handle_active_blocks_timer = handle_active_blocks_timer + dtime
-	if handle_active_blocks_timer >= handle_active_blocks_step then
-		handle_active_blocks_timer = handle_active_blocks_timer - handle_active_blocks_step
-		local active_block_range = tonumber(minetest.setting_get("active_block_range")) or 2
-		local new_active_blocks = {}
-		for _, player in ipairs(minetest.get_connected_players()) do
-			local blockpos = get_blockpos(player:getpos())
-			local minp = vector.subtract(blockpos, active_block_range)
-			local maxp = vector.add(blockpos, active_block_range)
+if pipeworks.use_real_entities then
+	local active_blocks = {} -- These only contain active blocks near players (i.e., not forceloaded ones)
 
-			for x = minp.x, maxp.x do
-			for y = minp.y, maxp.y do
-			for z = minp.z, maxp.z do
-				local pos = {x = x, y = y, z = z}
-				new_active_blocks[minetest.hash_node_position(pos)] = pos
-			end
-			end
+	local function get_blockpos(pos)
+		return {x = math.floor(pos.x / 16),
+				y = math.floor(pos.y / 16),
+				z = math.floor(pos.z / 16)}
+	end
+
+	move_entities_globalstep_part1 = function(dtime)
+		local active_block_range = tonumber(core.settings:get("active_block_range")) or 2
+		for key in pairs(active_blocks) do
+			active_blocks[key] = nil
+		end
+		for _, player in ipairs(core.get_connected_players()) do
+			local blockpos = get_blockpos(player:get_pos())
+			local minpx = blockpos.x - active_block_range
+			local minpy = blockpos.y - active_block_range
+			local minpz = blockpos.z - active_block_range
+			local maxpx = blockpos.x + active_block_range
+			local maxpy = blockpos.y + active_block_range
+			local maxpz = blockpos.z + active_block_range
+
+			for x = minpx, maxpx do
+				for y = minpy, maxpy do
+					for z = minpz, maxpz do
+						local pos = {x = x, y = y, z = z}
+						active_blocks[core.hash_node_position(pos)] = true
+					end
+				end
 			end
 		end
-		active_blocks = new_active_blocks
 		-- todo: callbacks on block load/unload
 	end
-end)
 
-local function is_active(pos)
-	return active_blocks[minetest.hash_node_position(get_blockpos(pos))] ~= nil
+	is_active = function(pos)
+		return active_blocks[core.hash_node_position(get_blockpos(pos))] ~= nil
+	end
+else
+	move_entities_globalstep_part1 = function()
+	end
+
+	is_active = function()
+		return false
+	end
 end
 
 local entitydef_default = {
@@ -102,9 +136,9 @@ local entitydef_default = {
 		if not def.entity then
 			return
 		end
-		def.entity:setpos(vector.add(self._pos, def.offset))
-		def.entity:setvelocity(self._velocity)
-		def.entity:setacceleration(self._acceleration)
+		def.entity:set_pos(vector.add(self._pos, def.offset))
+		def.entity:set_velocity(self._velocity)
+		def.entity:set_acceleration(self._acceleration)
 	end,
 	_attach_all = function(self)
 		local master = self._attached_entities_master
@@ -134,11 +168,15 @@ local entitydef_default = {
 		if not is_active(entity_pos) then
 			return
 		end
-		local ent = minetest.add_entity(entity_pos, entity.name):get_luaentity()
+		local object = core.add_entity(entity_pos, entity.name)
+		if not object then
+			return
+		end
+		local ent = object:get_luaentity()
 		ent:from_data(entity.data)
 		ent.parent_id = self._id
 		ent.attached_id = index
-		entity.entity = ent.object
+		entity.entity = object
 		local master = self._attached_entities_master
 		if master then
 			self:_attach(index, master)
@@ -174,43 +212,43 @@ local entitydef_default = {
 			self:_add_attached(id)
 		end
 	end,
-	getid = function(self)
+	get_id = function(self)
 		return self._id
 	end,
-	getpos = function(self)
+	get_pos = function(self)
 		return vector.new(self._pos)
 	end,
-	setpos = function(self, pos)
+	set_pos = function(self, pos)
 		self._pos = vector.new(pos)
 		--for _, entity in pairs(self._attached_entities) do
 		--	if entity.entity then
-		--		entity.entity:setpos(vector.add(self._pos, entity.offset))
+		--		entity.entity:set_pos(vector.add(self._pos, entity.offset))
 		--	end
 		--end
 		local master = self._attached_entities_master
 		if master then
 			local master_def = self._attached_entities[master]
-			master_def.entity:setpos(vector.add(self._pos, master_def.offset))
+			master_def.entity:set_pos(vector.add(self._pos, master_def.offset))
 		end
 	end,
-	getvelocity = function(self)
-		return vector.new(self._velocity)	
+	get_velocity = function(self)
+		return vector.new(self._velocity)
 	end,
-	setvelocity = function(self, velocity)
+	set_velocity = function(self, velocity)
 		self._velocity = vector.new(velocity)
 		local master = self._attached_entities_master
 		if master then
-			self._attached_entities[master].entity:setvelocity(self._velocity)
+			self._attached_entities[master].entity:set_velocity(self._velocity)
 		end
 	end,
-	getacceleration = function(self)
+	get_acceleration = function(self)
 		return vector.new(self._acceleration)
 	end,
-	setacceleration = function(self, acceleration)
+	set_acceleration = function(self, acceleration)
 		self._acceleration = vector.new(acceleration)
 		local master = self._attached_entities_master
 		if master then
-			self._attached_entities[master].entity:setacceleration(self._acceleration)
+			self._attached_entities[master].entity:set_acceleration(self._acceleration)
 		end
 	end,
 	remove = function(self)
@@ -252,7 +290,7 @@ end
 
 function luaentity.add_entity(pos, name)
 	if not luaentity.entities then
-		minetest.after(0, luaentity.add_entity, vector.new(pos), name)
+		core.after(0, luaentity.add_entity, vector.new(pos), name)
 		return
 	end
 	local index = luaentity.entities_index
@@ -272,7 +310,7 @@ function luaentity.add_entity(pos, name)
 		_acceleration = {x = 0, y = 0, z = 0},
 		_attached_entities = {},
 	}
-	
+
 	local prototype = luaentity.registered_entities[name]
 	setmetatable(entity, prototype) -- Default to prototype for other methods
 	luaentity.entities[index] = entity
@@ -301,28 +339,31 @@ end
 function luaentity.get_objects_inside_radius(pos, radius)
 	local objects = {}
 	local index = 1
-	for id, entity in pairs(luaentity.entities) do
-		if vector.distance(pos, entity:getpos()) <= radius then
+	for _, entity in pairs(luaentity.entities) do
+		if vector.distance(pos, entity:get_pos()) <= radius then
 			objects[index] = entity
 			index = index + 1
 		end
 	end
+	return objects
 end
 
-minetest.register_globalstep(function(dtime)
+local move_entities_globalstep_part2 = function(dtime)
 	if not luaentity.entities then
 		luaentity.entities = read_entities()
 	end
-	for id, entity in pairs(luaentity.entities) do
+	for _, entity in pairs(luaentity.entities) do
 		local master = entity._attached_entities_master
 		local master_def = master and entity._attached_entities[master]
 		local master_entity = master_def and master_def.entity
-		local master_entity_pos = master_entity and master_entity:getpos()
+		local master_entity_pos = master_entity and master_entity:get_pos()
 		if master_entity_pos then
 			entity._pos = vector.subtract(master_entity_pos, master_def.offset)
-			entity._velocity = master_entity:getvelocity()
-			entity._acceleration = master_entity:getacceleration()
+			entity._velocity = master_entity:get_velocity()
+			entity._acceleration = master_entity:get_acceleration()
 		else
+			entity._velocity = entity._velocity or vector.new(0,0,0)
+			entity._acceleration = entity._acceleration or vector.new(0,0,0)
 			entity._pos = vector.add(vector.add(
 				entity._pos,
 				vector.multiply(entity._velocity, dtime)),
@@ -348,4 +389,38 @@ minetest.register_globalstep(function(dtime)
 			end
 		end
 	end
+end
+
+-- dtime after which there is an update (or skip).
+local dtime_threshold = pipeworks.entity_update_interval
+-- Accumulated dtime since last update (or skip).
+local dtime_accum = 0
+-- Delayed dtime accumulated due to skipped updates.
+local dtime_delayed = 0
+local skip_update = false
+
+core.register_globalstep(function(dtime)
+	if dtime >= 0.2 and dtime_delayed < 1 then
+		-- Reduce activity when the server is lagging.
+		skip_update = true
+	end
+
+	dtime_accum = dtime_accum + dtime
+	if dtime_accum < dtime_threshold then
+		return
+	end
+
+	if skip_update then
+		dtime_delayed = dtime_delayed + dtime_accum
+		skip_update = false
+	else
+		move_entities_globalstep_part1(dtime_accum + dtime_delayed)
+		move_entities_globalstep_part2(dtime_accum + dtime_delayed)
+		dtime_delayed = 0
+	end
+
+	-- Tune the threshold so that the average interval is pipeworks.entity_update_interval.
+	dtime_threshold = math.max(dtime_threshold + (pipeworks.entity_update_interval - dtime_accum) / 10, 0)
+
+	dtime_accum = 0
 end)

mcl_furnaces.lua

@@ -0,0 +1,376 @@
+
+local old_furnace = table.copy(core.registered_nodes["mcl_furnaces:furnace"])
+local old_blast_furnace = table.copy(core.registered_nodes["mcl_blast_furnace:blast_furnace"])
+local old_smoker = table.copy(core.registered_nodes["mcl_smoker:smoker"])
+
+local tube_entry = "^pipeworks_tube_connection_stony.png"
+
+-- groups
+local furnace_groups = old_furnace.groups
+furnace_groups["tubedevice"] = 1
+furnace_groups["tubedevice_receiver"] = 1
+local furnace_groups_active = table.copy(furnace_groups)
+furnace_groups_active["not_in_creative_inventory"] = 1
+
+local blast_furnace_groups = old_blast_furnace.groups
+blast_furnace_groups["tubedevice"] = 1
+blast_furnace_groups["tubedevice_receiver"] = 1
+local blast_furnace_groups_active = table.copy(blast_furnace_groups)
+blast_furnace_groups_active["not_in_creative_inventory"] = 1
+
+local smoker_groups = old_smoker.groups
+smoker_groups["tubedevice"] = 1
+smoker_groups["tubedevice_receiver"] = 1
+local smoker_groups_active = table.copy(smoker_groups)
+smoker_groups_active["not_in_creative_inventory"] = 1
+
+
+-- a hack to give the exp to fake players it's be dropped instead added to (fake) player inv
+local function give_xp(pos, player)
+   local meta = core.get_meta(pos)
+   local dir = vector.divide(core.facedir_to_dir(core.get_node(pos).param2), -1.95)
+   local xp = meta:get_int("xp")
+   if xp > 0 then
+      mcl_experience.throw_xp(vector.add(pos, dir), xp)
+      meta:set_int("xp", 0)
+   end
+end
+
+local override = {}
+
+override.tiles = {
+   "default_furnace_top.png"..tube_entry,
+   "default_furnace_bottom.png"..tube_entry,
+   "default_furnace_side.png"..tube_entry,
+   "default_furnace_side.png"..tube_entry,
+   "default_furnace_side.png"..tube_entry,
+   "default_furnace_front.png"
+}
+
+override.groups = furnace_groups
+
+override.tube = {
+   insert_object = function(pos, node, stack, direction)
+      local meta = core.get_meta(pos)
+      local inv = meta:get_inventory()
+      local timer = core.get_node_timer(pos)
+      if not timer:is_started() then
+	 timer:start(1.0)
+      end
+      if direction.y == 1 then
+	 return inv:add_item("fuel", stack)
+      else
+	 return inv:add_item("src", stack)
+      end
+   end,
+   can_insert = function(pos,node,stack,direction)
+      local meta = core.get_meta(pos)
+      local inv = meta:get_inventory()
+      if direction.y == 1 then
+	 return inv:room_for_item("fuel", stack)
+      else
+	 if meta:get_int("split_material_stacks") == 1 then
+	    stack = stack:peek_item(1)
+	 end
+	 return inv:room_for_item("src", stack)
+      end
+   end,
+   input_inventory = "dst",
+   connect_sides = {left = 1, right = 1, back = 1, bottom = 1, top = 1}
+}
+
+override.after_place_node = function(pos, placer, itemstack, pointed_thing)
+   pipeworks.after_place(pos, placer, itemstack, pointed_thing)
+end
+
+override.after_dig_node = function(pos, oldnode, oldmetadata, digger)
+   old_furnace.after_dig_node(pos, oldnode, oldmetadata, digger)
+   pipeworks.after_dig(pos)
+end
+
+override.on_metadata_inventory_take = function(pos, listname, index, stack, player)
+   if listname == "dst" then
+      if stack:get_name() == "mcl_core:iron_ingot" then
+	 awards.unlock(player:get_player_name(), "mcl:acquireIron")
+      elseif stack:get_name() == "mcl_fishing:fish_cooked" then
+	 awards.unlock(player:get_player_name(), "mcl:cookFish")
+      end
+      give_xp(pos, player)
+   end
+end
+
+override.on_rotate = pipeworks.on_rotate
+
+
+local override_active = table.copy(override)
+
+override_active.tiles = {
+   "default_furnace_top.png"..tube_entry,
+   "default_furnace_bottom.png"..tube_entry,
+   "default_furnace_side.png"..tube_entry,
+   "default_furnace_side.png"..tube_entry,
+   "default_furnace_side.png"..tube_entry,
+   "default_furnace_front_active.png",
+}
+
+override_active.groups = furnace_groups_active
+
+override_active.tube = {
+   insert_object = function(pos,node,stack,direction)
+      local meta = core.get_meta(pos)
+      local inv = meta:get_inventory()
+      local timer = core.get_node_timer(pos)
+      if not timer:is_started() then
+	 timer:start(1.0)
+      end
+      if direction.y == 1 then
+	 return inv:add_item("fuel", stack)
+      else
+	 return inv:add_item("src", stack)
+      end
+   end,
+   can_insert = function(pos, node, stack, direction)
+      local meta = core.get_meta(pos)
+      local inv = meta:get_inventory()
+      if direction.y == 1 then
+	 return inv:room_for_item("fuel", stack)
+      else
+	 return inv:room_for_item("src", stack)
+      end
+   end,
+   input_inventory = "dst",
+   connect_sides = {left = 1, right = 1, back = 1, bottom = 1, top = 1}
+}
+
+
+--blast furnace
+
+local override_blast_furnace = {}
+
+override_blast_furnace.tiles = {
+   "blast_furnace_top.png"..tube_entry,
+   "blast_furnace_top.png"..tube_entry,
+   "blast_furnace_side.png"..tube_entry,
+   "blast_furnace_side.png"..tube_entry,
+   "blast_furnace_side.png"..tube_entry,
+   "blast_furnace_front.png"
+}
+
+override_blast_furnace.groups = blast_furnace_groups
+
+override_blast_furnace.tube = {
+   insert_object = function(pos, node, stack, direction)
+      local meta = core.get_meta(pos)
+      local inv = meta:get_inventory()
+      local timer = core.get_node_timer(pos)
+      if not timer:is_started() then
+	 timer:start(1.0)
+      end
+      if direction.y == 1 then
+	 return inv:add_item("fuel", stack)
+      else
+	 return inv:add_item("src", stack)
+      end
+   end,
+   can_insert = function(pos,node,stack,direction)
+      local meta = core.get_meta(pos)
+      local inv = meta:get_inventory()
+      if direction.y == 1 then
+	 return inv:room_for_item("fuel", stack)
+      else
+	 if meta:get_int("split_material_stacks") == 1 then
+	    stack = stack:peek_item(1)
+	 end
+	 return inv:room_for_item("src", stack)
+      end
+   end,
+   input_inventory = "dst",
+   connect_sides = {left = 1, right = 1, back = 1, bottom = 1, top = 1}
+}
+
+override_blast_furnace.after_place_node = function(pos, placer, itemstack, pointed_thing)
+   pipeworks.after_place(pos, placer, itemstack, pointed_thing)
+end
+
+override_blast_furnace.after_dig_node = function(pos, oldnode, oldmetadata, digger)
+   old_blast_furnace.after_dig_node(pos, oldnode, oldmetadata, digger)
+   pipeworks.after_dig(pos)
+end
+
+override_blast_furnace.on_metadata_inventory_take = function(pos, listname, index, stack, player)
+   -- Award smelting achievements
+   if listname == "dst" then
+      if stack:get_name() == "mcl_core:iron_ingot" then
+	 awards.unlock(player:get_player_name(), "mcl:acquireIron")
+      end
+      give_xp(pos, player)
+   end
+end
+
+override_blast_furnace.on_rotate = pipeworks.on_rotate
+
+
+local override_blast_active = table.copy(override)
+
+override_blast_active.tiles = {
+   "blast_furnace_top.png"..tube_entry,
+   "blast_furnace_top.png"..tube_entry,
+   "blast_furnace_side.png"..tube_entry,
+   "blast_furnace_side.png"..tube_entry,
+   "blast_furnace_side.png"..tube_entry,
+   {
+      name = "blast_furnace_front_on.png",
+      animation = { type = "vertical_frames", aspect_w = 16, aspect_h = 16, length = 48 }
+   },
+}
+
+override_blast_active.groups = blast_furnace_groups_active
+
+override_blast_active.tube = {
+   insert_object = function(pos,node,stack,direction)
+      local meta = core.get_meta(pos)
+      local inv = meta:get_inventory()
+      local timer = core.get_node_timer(pos)
+      if not timer:is_started() then
+	 timer:start(1.0)
+      end
+      if direction.y == 1 then
+	 return inv:add_item("fuel", stack)
+      else
+	 return inv:add_item("src", stack)
+      end
+   end,
+   can_insert = function(pos, node, stack, direction)
+      local meta = core.get_meta(pos)
+      local inv = meta:get_inventory()
+      if direction.y == 1 then
+	 return inv:room_for_item("fuel", stack)
+      else
+	 return inv:room_for_item("src", stack)
+      end
+   end,
+   input_inventory = "dst",
+   connect_sides = {left = 1, right = 1, back = 1, bottom = 1, top = 1}
+}
+
+
+-- smoker
+
+local override_smoker = {}
+
+override_smoker.tiles = {
+   "smoker_top.png"..tube_entry,
+   "smoker_bottom.png"..tube_entry,
+   "smoker_side.png"..tube_entry,
+   "smoker_side.png"..tube_entry,
+   "smoker_side.png"..tube_entry,
+   "smoker_front.png"
+}
+
+override_smoker.groups = smoker_groups
+
+override_smoker.tube = {
+   insert_object = function(pos, node, stack, direction)
+      local meta = core.get_meta(pos)
+      local inv = meta:get_inventory()
+      local timer = core.get_node_timer(pos)
+      if not timer:is_started() then
+	 timer:start(1.0)
+      end
+      if direction.y == 1 then
+	 return inv:add_item("fuel", stack)
+      else
+	 return inv:add_item("src", stack)
+      end
+   end,
+   can_insert = function(pos,node,stack,direction)
+      local meta = core.get_meta(pos)
+      local inv = meta:get_inventory()
+      if direction.y == 1 then
+	 return inv:room_for_item("fuel", stack)
+      else
+	 if meta:get_int("split_material_stacks") == 1 then
+	    stack = stack:peek_item(1)
+	 end
+	 return inv:room_for_item("src", stack)
+      end
+   end,
+   input_inventory = "dst",
+   connect_sides = {left = 1, right = 1, back = 1, bottom = 1, top = 1}
+}
+
+override_smoker.after_place_node = function(pos, placer, itemstack, pointed_thing)
+   pipeworks.after_place(pos, placer, itemstack, pointed_thing)
+end
+
+override_smoker.after_dig_node = function(pos, oldnode, oldmetadata, digger)
+   old_smoker.after_dig_node(pos, oldnode, oldmetadata, digger)
+   pipeworks.after_dig(pos)
+end
+
+override_smoker.on_metadata_inventory_take = function(pos, listname, index, stack, player)
+   -- Award fish achievements
+   if listname == "dst" then
+      if stack:get_name() == "mcl_fishing:fish_cooked" then
+	 awards.unlock(player:get_player_name(), "mcl:cookFish")
+      end
+      give_xp(pos, player)
+   end
+end
+
+override_smoker.on_rotate = pipeworks.on_rotate
+
+
+local override_smoker_active = table.copy(override)
+
+override_smoker_active.tiles = {
+   "smoker_top.png"..tube_entry,
+   "smoker_bottom.png"..tube_entry,
+   "smoker_side.png"..tube_entry,
+   "smoker_side.png"..tube_entry,
+   "smoker_side.png"..tube_entry,
+   {
+      name = "smoker_front_on.png",
+      animation = { type = "vertical_frames", aspect_w = 16, aspect_h = 16, length = 48 }
+   },
+}
+
+override_smoker_active.groups = smoker_groups_active
+
+override_smoker_active.tube = {
+   insert_object = function(pos,node,stack,direction)
+      local meta = core.get_meta(pos)
+      local inv = meta:get_inventory()
+      local timer = core.get_node_timer(pos)
+      if not timer:is_started() then
+	 timer:start(1.0)
+      end
+      if direction.y == 1 then
+	 return inv:add_item("fuel", stack)
+      else
+	 return inv:add_item("src", stack)
+      end
+   end,
+   can_insert = function(pos, node, stack, direction)
+      local meta = core.get_meta(pos)
+      local inv = meta:get_inventory()
+      if direction.y == 1 then
+	 return inv:room_for_item("fuel", stack)
+      else
+	 return inv:room_for_item("src", stack)
+      end
+   end,
+   input_inventory = "dst",
+   connect_sides = {left = 1, right = 1, back = 1, bottom = 1, top = 1}
+}
+
+
+-- override
+core.override_item("mcl_furnaces:furnace", override)
+core.override_item("mcl_furnaces:furnace_active", override_active)
+
+core.override_item("mcl_blast_furnace:blast_furnace", override_blast_furnace)
+core.override_item("mcl_blast_furnace:blast_furnace_active", override_blast_active)
+
+core.override_item("mcl_smoker:smoker", override_smoker)
+core.override_item("mcl_smoker:smoker_active", override_smoker_active)

mod.conf

@@ -1 +1,5 @@
 name = pipeworks
+description = This mod uses mesh nodes and nodeboxes to supply a complete set of 3D pipes and tubes, along with devices that work with them.
+depends = basic_materials, xcompat, fakelib
+optional_depends = mesecons, mesecons_mvps, digilines, signs_lib, unified_inventory, default, screwdriver, fl_mapgen, sound_api, i3, hades_core, hades_furnaces, hades_chests, mcl_mapgen_core, mcl_barrels, mcl_furnaces, mcl_experience, vizlib
+min_minetest_version = 5.5.0

models.lua

@@ -33,8 +33,8 @@ pipeworks.tube_frontstub = {
 }
 
 pipeworks.tube_backstub = {
-	{ -9/64, -9/64, -9/64,   9/64, 9/64, 32/64 },	-- tube segment against -Z face
-} 
+	{ -9/64, -9/64, -9/64,   9/64, 9/64, 32/64 },	-- tube segment against +Z face
+}
 
 pipeworks.tube_boxes = {pipeworks.tube_leftstub, pipeworks.tube_rightstub, pipeworks.tube_bottomstub, pipeworks.tube_topstub, pipeworks.tube_frontstub, pipeworks.tube_backstub}
 

models/pipeworks_entry_panel_lowpoly.obj

@@ -0,0 +1,236 @@
+# Blender v2.78 (sub 0) OBJ File: 'pipe-entry-panel-lowpoly.blend'
+# www.blender.org
+o Cylinder.000
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+s off
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models/pipeworks_flow_sensor_lowpoly.obj

@@ -0,0 +1,220 @@
+# Blender v2.78 (sub 0) OBJ File: 'pipe-flow-sensor-lowpoly.blend'
+# www.blender.org
+o Cube.001_Cube.001_None
+v -0.187500 0.187500 0.250000
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models/pipeworks_spigot_lowpoly.obj

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models/pipeworks_spigot_pouring_lowpoly.obj

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+f 7/13/4 1/14/4 4/15/4 8/16/4
+f 4/17/5 3/18/5 6/19/5 8/20/5
+f 7/21/6 5/22/6 2/23/6 1/24/6
+f 9/25/4 10/26/4 11/27/4 12/28/4
+f 10/29/1 13/30/1 14/31/1 11/32/1
+f 13/33/2 15/34/2 16/35/2 14/36/2
+f 15/37/3 9/38/3 12/39/3 16/40/3
+f 17/41/4 18/42/4 19/43/4 20/44/4
+f 18/45/1 21/46/1 22/47/1 19/48/1
+f 21/49/2 23/50/2 24/51/2 22/52/2
+f 23/53/3 17/54/3 20/55/3 24/56/3
+f 20/57/5 19/58/5 22/59/5 24/60/5
+f 23/61/6 21/62/6 18/63/6 17/64/6
+f 28/65/2 26/66/2 40/67/2 38/68/2 36/69/2 34/70/2 32/71/2 30/72/2
+f 25/73/4 27/74/4 29/75/4 31/76/4 33/77/4 35/78/4 37/79/4 39/80/4
+f 60/81/2 58/82/2 72/83/2 70/84/2 68/85/2 66/86/2 64/87/2 62/88/2
+f 57/89/4 59/90/4 61/91/4 63/92/4 65/93/4 67/94/4 69/95/4 71/96/4
+s 1
+f 25/97/7 26/98/7 28/99/8 27/100/8
+f 27/100/8 28/99/8 30/101/9 29/102/9
+f 29/102/9 30/101/9 32/103/10 31/104/10
+f 31/105/10 32/106/10 34/107/11 33/108/11
+f 33/108/11 34/107/11 36/109/12 35/110/12
+f 35/110/12 36/109/12 38/111/13 37/112/13
+f 37/112/13 38/111/13 40/113/14 39/114/14
+f 39/114/14 40/113/14 26/98/7 25/97/7
+f 59/115/8 60/116/8 62/117/9 61/118/9
+f 57/119/7 58/120/7 60/116/8 59/115/8
+f 61/118/9 62/117/9 64/121/10 63/122/10
+f 63/123/10 64/124/10 66/125/11 65/126/11
+f 65/126/11 66/125/11 68/127/12 67/128/12
+f 67/128/12 68/127/12 70/129/13 69/130/13
+f 69/130/13 70/129/13 72/131/14 71/132/14
+f 71/132/14 72/131/14 58/120/7 57/119/7
+f 54/133/13 56/134/14 55/135/14 53/136/13
+f 50/137/11 52/138/12 51/139/12 49/140/11
+f 48/141/10 47/142/10 45/143/9 46/144/9
+f 54/133/13 53/136/13 51/139/12 52/138/12
+f 43/145/8 41/146/7 42/147/7 44/148/8
+f 45/149/9 43/145/8 44/148/8 46/150/9
+f 48/141/10 50/137/11 49/140/11 47/142/10
+f 41/146/7 55/135/14 56/134/14 42/147/7

pipes.lua

@@ -1,15 +1,21 @@
 -- This file supplies the steel pipes
+local S = core.get_translator("pipeworks")
 
 local REGISTER_COMPATIBILITY = true
 
 local pipes_empty_nodenames = {}
 local pipes_full_nodenames = {}
 
-local vti = {4, 3, 2, 1, 6, 5}
+local new_flow_logic_register = pipeworks.flowables.register
+
+local polys = ""
+if pipeworks.enable_lowpoly then polys = "_lowpoly" end
+
+--~ local vti = {4, 3, 2, 1, 6, 5}
 local cconnects = {{}, {1}, {1, 2}, {1, 3}, {1, 3, 5}, {1, 2, 3}, {1, 2, 3, 5}, {1, 2, 3, 4}, {1, 2, 3, 4, 5}, {1, 2, 3, 4, 5, 6}}
 for index, connects in ipairs(cconnects) do
 	local outsel = {}
-	
+
 	local jx = 0
 	local jy = 0
 	local jz = 0
@@ -24,43 +30,41 @@ for index, connects in ipairs(cconnects) do
 		table.insert(outsel, pipeworks.pipe_selectboxes[v])
 	end
 
+	--[[
 	if #connects == 1 then
 		local v = connects[1]
 		v = v-1 + 2*(v%2) -- Opposite side
 	end
-	
-	local pgroups = {snappy = 3, pipe = 1, not_in_creative_inventory = 1}
-	local pipedesc = "Pipe segement".." "..dump(connects).."... You hacker, you."
-	local image = nil
+	--]]
+
+	local pgroups = {snappy = 3, pipe = 1, not_in_creative_inventory = 1, dig_generic = 4, axey = 1, handy = 1, pickaxey = 1}
+	local pipedesc = S("Pipe Segment").." "..dump(connects)
 
 	if #connects == 0 then
-		pgroups = {snappy = 3, tube = 1}
-		pipedesc = "Pipe segment"
-		image = "pipeworks_pipe_inv.png"
+		pgroups = {snappy = 3, pipe = 1, dig_generic = 4, axey = 1, handy = 1, pickaxey = 1}
+		pipedesc = S("Pipe Segment")
 	end
-	
+
 	local outimg_e = { "pipeworks_pipe_plain.png" }
 	local outimg_l = { "pipeworks_pipe_plain.png" }
 
-	if index == 3 then 
+	if index == 3 then
 		outimg_e = { "pipeworks_pipe_3_empty.png" }
 		outimg_l = { "pipeworks_pipe_3_loaded.png" }
 	end
 
-	local mesh = "pipeworks_pipe_"..index..".obj"
+	local mesh = "pipeworks_pipe_"..index..polys..".obj"
 
 	if index == 1 then
-		mesh = "pipeworks_pipe_3.obj"
+		mesh = "pipeworks_pipe_3"..polys..".obj"
 	end
 
-	minetest.register_node("pipeworks:pipe_"..index.."_empty", {
+	core.register_node("pipeworks:pipe_"..index.."_empty", {
 		description = pipedesc,
 		drawtype = "mesh",
 		mesh = mesh,
 		tiles = outimg_e,
 		sunlight_propagates = true,
-		inventory_image = image,
-		wield_image = image,
 		paramtype = "light",
 		paramtype2 = "facedir",
 		selection_box = {
@@ -72,7 +76,11 @@ for index, connects in ipairs(cconnects) do
 			fixed = outsel
 		},
 		groups = pgroups,
-		sounds = default.node_sound_wood_defaults(),
+		is_ground_content = false,
+		_mcl_hardness = 0.8,
+		_sound_def = {
+			key = "node_sound_metal_defaults",
+		},
 		walkable = true,
 		drop = "pipeworks:pipe_1_empty",
 		after_place_node = function(pos)
@@ -80,12 +88,16 @@ for index, connects in ipairs(cconnects) do
 		end,
 		after_dig_node = function(pos)
 			pipeworks.scan_for_pipe_objects(pos)
-		end
+		end,
+		on_rotate = false,
+		check_for_pole = pipeworks.check_for_vert_pipe,
+		check_for_horiz_pole = pipeworks.check_for_horiz_pipe,
+		pipenumber = index
 	})
-	
-	local pgroups = {snappy = 3, pipe = 1, not_in_creative_inventory = 1}
 
-	minetest.register_node("pipeworks:pipe_"..index.."_loaded", {
+	local pgroups = {snappy = 3, pipe = 1, not_in_creative_inventory = 1, dig_generic = 4, axey = 1, handy = 1, pickaxey = 1}
+
+	core.register_node("pipeworks:pipe_"..index.."_loaded", {
 		description = pipedesc,
 		drawtype = "mesh",
 		mesh = mesh,
@@ -102,49 +114,65 @@ for index, connects in ipairs(cconnects) do
 			fixed = outsel
 		},
 		groups = pgroups,
-		sounds = default.node_sound_wood_defaults(),
+		is_ground_content = false,
+		_mcl_hardness = 0.8,
+		_sound_def = {
+			key = "node_sound_metal_defaults",
+		},
 		walkable = true,
 		drop = "pipeworks:pipe_1_empty",
 		after_place_node = function(pos)
+			core.set_node(pos, { name = "pipeworks:pipe_"..index.."_empty" })
 			pipeworks.scan_for_pipe_objects(pos)
 		end,
 		after_dig_node = function(pos)
 			pipeworks.scan_for_pipe_objects(pos)
-		end
+		end,
+		on_rotate = false,
+		check_for_pole = pipeworks.check_for_vert_pipe,
+		check_for_horiz_pole = pipeworks.check_for_horiz_pipe,
+		pipenumber = index
 	})
-	
-	table.insert(pipes_empty_nodenames, "pipeworks:pipe_"..index.."_empty")
-	table.insert(pipes_full_nodenames,  "pipeworks:pipe_"..index.."_loaded")
-end
 
+	local emptypipe = "pipeworks:pipe_"..index.."_empty"
+	local fullpipe = "pipeworks:pipe_"..index.."_loaded"
+	table.insert(pipes_empty_nodenames, emptypipe)
+	table.insert(pipes_full_nodenames, fullpipe)
+	new_flow_logic_register.simple(emptypipe)
+	new_flow_logic_register.simple(fullpipe)
+end
+pipeworks.ui_cat_tube_list[#pipeworks.ui_cat_tube_list+1] = "pipeworks:pipe_1_empty"
 
 
 if REGISTER_COMPATIBILITY then
 	local cempty = "pipeworks:pipe_compatibility_empty"
 	local cloaded = "pipeworks:pipe_compatibility_loaded"
-	minetest.register_node(cempty, {
+	core.register_node(cempty, {
 		drawtype = "airlike",
 		sunlight_propagates = true,
 		paramtype = "light",
-		inventory_image = "pipeworks_pipe_inv.png",
-		wield_image = "pipeworks_pipe_inv.png",
-		description = "Pipe Segment (legacy)",
+		description = S("Pipe Segment (legacy)"),
 		groups = {not_in_creative_inventory = 1, pipe_to_update = 1},
+		is_ground_content = false,
 		drop = "pipeworks:pipe_1_empty",
 		after_place_node = function(pos)
 			pipeworks.scan_for_pipe_objects(pos)
 		end,
+		on_rotate = false
+
 	})
-	minetest.register_node(cloaded, {
+	core.register_node(cloaded, {
 		drawtype = "airlike",
 		sunlight_propagates = true,
 		paramtype = "light",
-		inventory_image = "pipeworks_pipe_inv.png",
 		groups = {not_in_creative_inventory = 1, pipe_to_update = 1},
+		is_ground_content = false,
 		drop = "pipeworks:pipe_1_empty",
 		after_place_node = function(pos)
 			pipeworks.scan_for_pipe_objects(pos)
 		end,
+		on_rotate = false
+
 	})
 	for xm = 0, 1 do
 	for xp = 0, 1 do
@@ -153,38 +181,55 @@ if REGISTER_COMPATIBILITY then
 	for zm = 0, 1 do
 	for zp = 0, 1 do
 		local pname = xm..xp..ym..yp..zm..zp
-		minetest.register_alias("pipeworks:pipe_"..pname.."_empty", cempty)
-		minetest.register_alias("pipeworks:pipe_"..pname.."_loaded", cloaded)
+		core.register_alias("pipeworks:pipe_"..pname.."_empty", cempty)
+		core.register_alias("pipeworks:pipe_"..pname.."_loaded", cloaded)
 	end
 	end
 	end
 	end
 	end
 	end
-	minetest.register_abm({
+	core.register_abm({
 		nodenames = {"group:pipe_to_update"},
 		interval = 1,
 		chance = 1,
 		action = function(pos, node, active_object_count, active_object_count_wider)
 			local minp = {x = pos.x-1, y = pos.y-1, z = pos.z-1}
 			local maxp = {x = pos.x+1, y = pos.y+1, z = pos.z+1}
-			if table.getn(minetest.find_nodes_in_area(minp, maxp, "ignore")) == 0 then
+			if table.getn(core.find_nodes_in_area(minp, maxp, "ignore")) == 0 then
 				pipeworks.scan_for_pipe_objects(pos)
 			end
 		end
 	})
 end
 
-table.insert(pipes_empty_nodenames,"pipeworks:valve_on_empty")
-table.insert(pipes_empty_nodenames,"pipeworks:valve_off_empty")
-table.insert(pipes_empty_nodenames,"pipeworks:entry_panel_empty")
-table.insert(pipes_empty_nodenames,"pipeworks:flow_sensor_empty")
+local valve_on = "pipeworks:valve_on_empty"
+local valve_off = "pipeworks:valve_off_empty"
+local entry_panel_empty = "pipeworks:entry_panel_empty"
+local flow_sensor_empty = "pipeworks:flow_sensor_empty"
+local sp_empty = "pipeworks:straight_pipe_empty"
+-- XXX: why aren't these in devices.lua!?
+table.insert(pipes_empty_nodenames, valve_on)
+table.insert(pipes_empty_nodenames, valve_off)
+table.insert(pipes_empty_nodenames, entry_panel_empty)
+table.insert(pipes_empty_nodenames, flow_sensor_empty)
+table.insert(pipes_empty_nodenames, sp_empty)
 
-table.insert(pipes_full_nodenames,"pipeworks:valve_on_loaded")
-table.insert(pipes_full_nodenames,"pipeworks:entry_panel_loaded")
-table.insert(pipes_full_nodenames,"pipeworks:flow_sensor_loaded")
+local valve_on_loaded = "pipeworks:valve_on_loaded"
+local entry_panel_loaded = "pipeworks:entry_panel_loaded"
+local flow_sensor_loaded = "pipeworks:flow_sensor_loaded"
+local sp_loaded = "pipeworks:straight_pipe_loaded"
+table.insert(pipes_full_nodenames, valve_on_loaded)
+table.insert(pipes_full_nodenames, entry_panel_loaded)
+table.insert(pipes_full_nodenames, flow_sensor_loaded)
+table.insert(pipes_full_nodenames, sp_loaded)
 
-minetest.register_abm({
+pipeworks.pipes_full_nodenames = pipes_full_nodenames
+pipeworks.pipes_empty_nodenames = pipes_empty_nodenames
+
+if pipeworks.toggles.pipe_mode == "classic" then
+
+core.register_abm({
 	nodenames = pipes_empty_nodenames,
 	interval = 1,
 	chance = 1,
@@ -193,7 +238,7 @@ minetest.register_abm({
 	end
 })
 
-minetest.register_abm({
+core.register_abm({
 	nodenames = pipes_full_nodenames,
 	interval = 1,
 	chance = 1,
@@ -202,21 +247,24 @@ minetest.register_abm({
 	end
 })
 
-minetest.register_abm({
+core.register_abm({
 	nodenames = {"pipeworks:spigot","pipeworks:spigot_pouring"},
 	interval = 1,
 	chance = 1,
-	action = function(pos, node, active_object_count, active_object_count_wider) 
+	action = function(pos, node, active_object_count, active_object_count_wider)
 		pipeworks.spigot_check(pos,node)
 	end
 })
 
-minetest.register_abm({
+core.register_abm({
 	nodenames = {"pipeworks:fountainhead","pipeworks:fountainhead_pouring"},
 	interval = 1,
 	chance = 1,
-	action = function(pos, node, active_object_count, active_object_count_wider) 
+	action = function(pos, node, active_object_count, active_object_count_wider)
 		pipeworks.fountainhead_check(pos,node)
 	end
 })
 
+
+
+end

pressure_logic/abm_register.lua

@@ -0,0 +1,27 @@
+-- register new flow logic ABMs
+-- written 2017 by thetaepsilon
+
+local register = {}
+pipeworks.flowlogic.abmregister = register
+
+local flowlogic = pipeworks.flowlogic
+
+-- register node list for the main logic function.
+-- see flowlogic.run() in abms.lua.
+
+local register_flowlogic_abm = function(nodename)
+	if pipeworks.toggles.pipe_mode == "pressure" then
+		core.register_abm({
+			label = "pipeworks new_flow_logic run",
+			nodenames = { nodename },
+			interval = 1,
+			chance = 1,
+			action = function(pos, node, active_object_count, active_object_count_wider)
+				flowlogic.run(pos, node)
+			end
+		})
+	else
+		core.log("warning", "pipeworks pressure_logic not enabled but register.flowlogic() requested")
+	end
+end
+register.flowlogic = register_flowlogic_abm

pressure_logic/abms.lua

@@ -0,0 +1,371 @@
+-- reimplementation of new_flow_logic branch: processing functions
+-- written 2017 by thetaepsilon
+
+
+
+local flowlogic = {}
+flowlogic.helpers = {}
+pipeworks.flowlogic = flowlogic
+
+
+
+-- borrowed from above: might be useable to replace the above coords tables
+local make_coords_offsets = function(pos, include_base)
+	local coords = {
+		{x=pos.x,y=pos.y-1,z=pos.z},
+		{x=pos.x,y=pos.y+1,z=pos.z},
+		{x=pos.x-1,y=pos.y,z=pos.z},
+		{x=pos.x+1,y=pos.y,z=pos.z},
+		{x=pos.x,y=pos.y,z=pos.z-1},
+		{x=pos.x,y=pos.y,z=pos.z+1},
+	}
+	if include_base then table.insert(coords, pos) end
+	return coords
+end
+
+
+
+-- local debuglog = function(msg) print("## "..msg) end
+
+
+
+--~ local formatvec = function(vec) local sep="," return "("..tostring(vec.x)..sep..tostring(vec.y)..sep..tostring(vec.z)..")" end
+
+
+
+-- new version of liquid check
+-- accepts a limit parameter to only delete water blocks that the receptacle can accept,
+-- and returns it so that the receptacle can update it's pressure values.
+local check_for_liquids_v2 = function(pos, limit)
+	local coords = make_coords_offsets(pos, false)
+	local total = 0
+	for _, tpos in ipairs(coords) do
+		if total >= limit then break end
+		local name = core.get_node(tpos).name
+		if name == pipeworks.liquids.water.source then
+			core.remove_node(tpos)
+			total = total + 1
+		end
+	end
+	--pipeworks.logger("check_for_liquids_v2@"..formatvec(pos).." total "..total)
+	return total
+end
+flowlogic.check_for_liquids_v2 = check_for_liquids_v2
+
+
+
+local label_pressure = "pipeworks.water_pressure"
+local get_pressure_access = function(pos)
+	local metaref = core.get_meta(pos)
+	return {
+		get = function()
+			return metaref:get_float(label_pressure)
+		end,
+		set = function(v)
+			metaref:set_float(label_pressure, v)
+		end
+	}
+end
+
+
+-- logging is unreliable when something is crashing...
+--[[
+local nilexplode = function(caller, label, value)
+	if value == nil then
+		error(caller..": "..label.." was nil")
+	end
+end
+--]]
+
+
+
+local finitemode = pipeworks.toggles.finite_water
+flowlogic.run = function(pos, node)
+	local nodename = node.name
+	-- get the current pressure value.
+	local nodepressure = get_pressure_access(pos)
+	local currentpressure = nodepressure.get()
+	local oldpressure = currentpressure
+
+	-- if node is an input: run intake phase
+	local inputdef = pipeworks.flowables.inputs.list[nodename]
+	if inputdef then
+		currentpressure = flowlogic.run_input(pos, node, currentpressure, inputdef)
+		--debuglog("post-intake currentpressure is "..currentpressure)
+		--nilexplode("run()", "currentpressure", currentpressure)
+	end
+
+	-- balance pressure with neighbours
+	currentpressure = flowlogic.balance_pressure(pos, node, currentpressure)
+
+	-- if node is an output: run output phase
+	local outputdef = pipeworks.flowables.outputs.list[nodename]
+	if outputdef then
+		currentpressure = flowlogic.run_output(
+			pos,
+			node,
+			currentpressure,
+			oldpressure,
+			outputdef,
+			finitemode)
+	end
+
+	-- if node has pressure transitions: determine new node
+	if pipeworks.flowables.transitions.list[nodename] then
+		local newnode = flowlogic.run_transition(node, currentpressure)
+		--pipeworks.logger("flowlogic.run()@"..formatvec(pos).." transition, new node name = "..dump(newnode).." pressure "..tostring(currentpressure))
+		core.swap_node(pos, newnode)
+		flowlogic.run_transition_post(pos, newnode)
+	end
+
+	-- set the new pressure
+	nodepressure.set(currentpressure)
+end
+
+
+
+local simple_neighbour_offsets = {
+		{x=0, y=-1,z= 0},
+		{x=0, y= 1,z= 0},
+		{x=-1,y= 0,z= 0},
+		{x= 1,y= 0,z= 0},
+		{x= 0,y= 0,z=-1},
+		{x= 0,y= 0,z= 1},
+}
+local get_neighbour_positions = function(pos, node)
+	-- local dname = "get_neighbour_positions@"..formatvec(pos).." "
+	-- get list of node neighbours.
+	-- if this node is directional and only flows on certain sides,
+	-- invoke the callback to retrieve the set.
+	-- for simple flowables this is just an auto-gen'd list of all six possible neighbours.
+	local candidates = {}
+	if pipeworks.flowables.list.simple[node.name] then
+		candidates = simple_neighbour_offsets
+	else
+		-- directional flowables: call the callback to get the list
+		local directional = pipeworks.flowables.list.directional[node.name]
+		if directional then
+			--pipeworks.logger(dname.."invoking neighbourfn")
+			local offsets = directional.neighbourfn(node)
+			candidates = offsets
+		end
+	end
+
+	-- then, check each possible neighbour to see if they can be reached from this node.
+	local connections = {}
+	for _, offset in ipairs(candidates) do
+		local npos = vector.add(pos, offset)
+		local neighbour = core.get_node(npos)
+		local nodename = neighbour.name
+		local is_simple = (pipeworks.flowables.list.simple[nodename])
+		if is_simple then
+			local n = get_pressure_access(npos)
+			table.insert(connections, n)
+		else
+			-- if target node is also directional, check if it agrees it can flow in that direction
+			local directional = pipeworks.flowables.list.directional[nodename]
+			if directional then
+				--pipeworks.logger(dname.."directionality test for offset "..formatvec(offset))
+				local towards_origin = vector.multiply(offset, -1)
+				--pipeworks.logger(dname.."vector passed to directionfn: "..formatvec(towards_origin))
+				local result = directional.directionfn(neighbour, towards_origin)
+				--pipeworks.logger(dname.."result: "..tostring(result))
+				if result then
+					local n = get_pressure_access(npos)
+					table.insert(connections, n)
+				end
+			end
+		end
+	end
+
+	return connections
+end
+
+
+
+flowlogic.balance_pressure = function(pos, node, currentpressure)
+	-- local dname = "flowlogic.balance_pressure()@"..formatvec(pos).." "
+	-- check the pressure of all nearby flowable nodes, and average it out.
+
+	-- unconditionally include self in nodes to average over.
+	-- result of averaging will be returned as new pressure for main flow logic callback
+	local totalv = currentpressure
+	local totalc = 1
+
+	-- pressure handles to average over
+	local connections = get_neighbour_positions(pos, node)
+
+	-- for each neighbour, add neighbour's pressure to the total to balance out
+	for _, neighbour in ipairs(connections) do
+		local n = neighbour.get()
+		totalv = totalv + n
+		totalc = totalc + 1
+	end
+	local average = totalv / totalc
+	for _, target in ipairs(connections) do
+		target.set(average)
+	end
+
+	return average
+end
+
+
+
+flowlogic.run_input = function(pos, node, currentpressure, inputdef)
+	-- intakefn allows a given input node to define it's own intake logic.
+	-- this function will calculate the maximum amount of water that can be taken in;
+	-- the intakefn will be given this and is expected to return the actual absorption amount.
+
+	local maxpressure = inputdef.maxpressure
+	local intake_limit = maxpressure - currentpressure
+	if intake_limit <= 0 then return currentpressure end
+
+	local actual_intake = inputdef.intakefn(pos, intake_limit)
+	--pipeworks.logger("run_input@"..formatvec(pos).." oldpressure "..currentpressure.." intake_limit "..intake_limit.." actual_intake "..actual_intake)
+	if actual_intake <= 0 then return currentpressure end
+
+	local newpressure = actual_intake + currentpressure
+	--debuglog("run_input() end, oldpressure "..currentpressure.." intake_limit "..intake_limit.." actual_intake "..actual_intake.." newpressure "..newpressure)
+	return newpressure
+end
+
+
+
+-- flowlogic output helper implementation:
+-- outputs water by trying to place water nodes nearby in the world.
+-- neighbours is a list of node offsets to try placing water in.
+-- this is a constructor function, returning another function which satisfies the output helper requirements.
+-- note that this does *not* take rotation into account.
+flowlogic.helpers.make_neighbour_output_fixed = function(neighbours)
+	return function(pos, node, currentpressure, finitemode)
+		local taken = 0
+		for _, offset in pairs(neighbours) do
+			local npos = vector.add(pos, offset)
+			local name = core.get_node(npos).name
+			if currentpressure < 1 then break end
+			-- take pressure anyway in non-finite mode, even if node is water source already.
+			-- in non-finite mode, pressure has to be sustained to keep the sources there.
+			-- so in non-finite mode, placing water is dependent on the target node;
+			-- draining pressure is not.
+			local canplace = (name == "air") or (name == pipeworks.liquids.water.flowing)
+			if canplace then
+				core.swap_node(npos, {name=pipeworks.liquids.water.source})
+			end
+			if (not finitemode) or canplace then
+				taken = taken + 1
+				currentpressure = currentpressure - 1
+			end
+		end
+		return taken
+	end
+end
+
+-- complementary function to the above when using non-finite mode:
+-- removes water sources from neighbor positions when the output is "off" due to lack of pressure.
+flowlogic.helpers.make_neighbour_cleanup_fixed = function(neighbours)
+	return function(pos, node, currentpressure)
+		--pipeworks.logger("neighbour_cleanup_fixed@"..formatvec(pos))
+		for _, offset in pairs(neighbours) do
+			local npos = vector.add(pos, offset)
+			local name = core.get_node(npos).name
+			if (name == pipeworks.liquids.water.source) then
+				--pipeworks.logger("neighbour_cleanup_fixed removing "..formatvec(npos))
+				core.remove_node(npos)
+			end
+		end
+	end
+end
+
+
+
+flowlogic.run_output = function(pos, node, currentpressure, oldpressure, outputdef, finitemode)
+	-- processing step for water output devices.
+	-- takes care of checking a minimum pressure value and updating the resulting pressure level
+	-- the outputfn is provided the current pressure and returns the pressure "taken".
+	-- as an example, using this with the above spigot function,
+	-- the spigot function tries to output a water source if it will fit in the world.
+	--pipeworks.logger("flowlogic.run_output() pos "..formatvec(pos).." old -> currentpressure "..tostring(oldpressure).." "..tostring(currentpressure).." finitemode "..tostring(finitemode))
+	local upper = outputdef.upper
+	local lower = outputdef.lower
+	local result = currentpressure
+	local threshold
+	if finitemode then threshold = lower else threshold = upper end
+	if currentpressure > threshold then
+		local takenpressure = outputdef.outputfn(pos, node, currentpressure, finitemode)
+		local newpressure = currentpressure - takenpressure
+		if newpressure < 0 then newpressure = 0 end
+		result = newpressure
+	end
+	if (not finitemode) and (currentpressure < lower) and (oldpressure < lower) then
+		--pipeworks.logger("flowlogic.run_output() invoking cleanup currentpressure="..tostring(currentpressure))
+		outputdef.cleanupfn(pos, node, currentpressure)
+	end
+	return result
+end
+
+
+
+-- determine which node to switch to based on current pressure
+flowlogic.run_transition = function(node, currentpressure)
+	local simplesetdef = pipeworks.flowables.transitions.simple[node.name]
+	local result = node
+	local found = false
+
+	-- simple transition sets: assumes all nodes in the set share param values.
+	if simplesetdef then
+		-- assumes that the set has been checked to contain at least one element...
+		local nodename_prev = simplesetdef[1].nodename
+		local result_nodename = node.name
+
+		for _, element in ipairs(simplesetdef) do
+			-- find the highest element that is below the current pressure.
+			local threshold = element.threshold
+			if threshold > currentpressure then
+				result_nodename = nodename_prev
+				found = true
+				break
+			end
+			nodename_prev = element.nodename
+		end
+
+		-- use last element if no threshold is greater than current pressure
+		if not found then
+			result_nodename = nodename_prev
+			found = true
+		end
+
+		-- preserve param1/param2 values
+		result = { name=result_nodename, param1=node.param1, param2=node.param2 }
+	end
+
+	if not found then
+		pipeworks.logger("flowlogic.run_transition() BUG no transition " ..
+			"definitions found! node.name=" .. node.name ..
+			" currentpressure=" .. tostring(currentpressure))
+	end
+
+	return result
+end
+
+-- post-update hook for run_transition
+-- among other things, updates mesecons if present.
+-- node here means the new node, returned from run_transition() above
+flowlogic.run_transition_post = function(pos, node)
+	local mesecons_def = core.registered_nodes[node.name].mesecons
+	local mesecons_rules = pipeworks.flowables.transitions.mesecons[node.name]
+	if core.get_modpath("mesecons") and (mesecons_def ~= nil) and mesecons_rules then
+		if type(mesecons_def) ~= "table" then
+			pipeworks.logger("flowlogic.run_transition_post() BUG mesecons def for "..node.name.."not a table: got "..tostring(mesecons_def))
+		else
+			local receptor = mesecons_def.receptor
+			if receptor then
+				local state = receptor.state
+				if state == mesecon.state.on then
+					mesecon.receptor_on(pos, mesecons_rules)
+				elseif state == mesecon.state.off then
+					mesecon.receptor_off(pos, mesecons_rules)
+				end
+			end
+		end
+	end
+end

pressure_logic/flowable_node_registry.lua

@@ -0,0 +1,53 @@
+-- registry of flowable node behaviours in new flow logic
+-- written 2017 by thetaepsilon
+
+-- the actual registration functions which edit these tables can be found in flowable_node_registry_install.lua
+-- this is because the ABM code needs to inspect these tables,
+-- but the registration code needs to reference said ABM code.
+-- so those functions were split out to resolve a circular dependency.
+
+
+
+pipeworks.flowables = {}
+pipeworks.flowables.list = {}
+pipeworks.flowables.list.all = {}
+-- pipeworks.flowables.list.nodenames = {}
+
+-- simple flowables - balance pressure in any direction
+pipeworks.flowables.list.simple = {}
+pipeworks.flowables.list.simple_nodenames = {}
+
+-- directional flowables - can only flow on certain sides
+-- format per entry is a table with the following fields:
+-- neighbourfn: function(node),
+--	called to determine which nodes to consider as neighbours.
+--	can be used to e.g. inspect the node's param values for facedir etc.
+--	returns: array of vector offsets to look for possible neighbours in
+-- directionfn: function(node, vector):
+--	can this node flow in this direction?
+--	called in the context of another node to check the matching entry returned by neighbourfn.
+-- for every offset vector returned by neighbourfn,
+-- the node at that absolute position is checked.
+-- if that node is also a directional flowable,
+-- then that node's vector is passed to that node's directionfn
+-- (inverted, so that directionfn sees a vector pointing out from it back to the origin node).
+-- if directionfn agrees that the neighbour node can currently flow in that direction,
+-- the neighbour is to participate in pressure balancing.
+pipeworks.flowables.list.directional = {}
+
+-- simple intakes - try to absorb any adjacent water nodes
+pipeworks.flowables.inputs = {}
+pipeworks.flowables.inputs.list = {}
+pipeworks.flowables.inputs.nodenames = {}
+
+-- outputs - takes pressure from pipes and update world to do something with it
+pipeworks.flowables.outputs = {}
+pipeworks.flowables.outputs.list = {}
+-- not currently any nodenames arraylist for this one as it's not currently needed.
+
+-- nodes with registered node transitions
+-- nodes will be switched depending on pressure level
+pipeworks.flowables.transitions = {}
+pipeworks.flowables.transitions.list = {}	-- master list
+pipeworks.flowables.transitions.simple = {}	-- nodes that change based purely on pressure
+pipeworks.flowables.transitions.mesecons = {}	-- table of mesecons rules to apply on transition

pressure_logic/flowable_node_registry_install.lua

@@ -0,0 +1,263 @@
+-- flowable node registry: add entries and install ABMs if new flow logic is enabled
+-- written 2017 by thetaepsilon
+
+
+
+-- use for hooking up ABMs as nodes are registered
+local abmregister = pipeworks.flowlogic.abmregister
+
+-- registration functions
+pipeworks.flowables.register = {}
+local register = pipeworks.flowables.register
+
+-- some sanity checking for passed args, as this could potentially be made an external API eventually
+local checkexists = function(nodename)
+	if type(nodename) ~= "string" then error("pipeworks.flowables nodename must be a string!") end
+	return pipeworks.flowables.list.all[nodename]
+end
+
+local insertbase = function(nodename)
+	if checkexists(nodename) then error("pipeworks.flowables duplicate registration!") end
+	pipeworks.flowables.list.all[nodename] = true
+	-- table.insert(pipeworks.flowables.list.nodenames, nodename)
+	if pipeworks.toggles.pipe_mode == "pressure" then
+		abmregister.flowlogic(nodename)
+	end
+end
+
+local regwarning = function(kind, nodename)
+	--~ local tail = ""
+	--~ if pipeworks.toggles.pipe_mode ~= "pressure" then tail = " but pressure logic not enabled" end
+	--pipeworks.logger(kind.." flow logic registry requested for "..nodename..tail)
+end
+
+-- Register a node as a simple flowable.
+-- Simple flowable nodes have no considerations for direction of flow;
+-- A cluster of adjacent simple flowables will happily average out in any direction.
+register.simple = function(nodename)
+	insertbase(nodename)
+	pipeworks.flowables.list.simple[nodename] = true
+	table.insert(pipeworks.flowables.list.simple_nodenames, nodename)
+	regwarning("simple", nodename)
+end
+
+-- Register a node as a directional flowable:
+-- has a helper function which determines which nodes to consider valid neighbours.
+register.directional = function(nodename, neighbourfn, directionfn)
+	insertbase(nodename)
+	pipeworks.flowables.list.directional[nodename] = {
+		neighbourfn = neighbourfn,
+		directionfn = directionfn
+	}
+	regwarning("directional", nodename)
+end
+
+-- register a node as a directional flowable that can only flow through either the top or bottom side.
+-- used for fountainheads (bottom side) and pumps (top side).
+-- this is in world terms, not facedir relative!
+register.directional_vertical_fixed = function(nodename, topside)
+	local y
+	if topside then y = 1 else y = -1 end
+	local side = { x=0, y=y, z=0 }
+	local neighbourfn = function(node) return { side } end
+	local directionfn = function(node, direction)
+		return vector.equals(direction, side)
+	end
+	register.directional(nodename, neighbourfn, directionfn)
+end
+
+-- register a node as a directional flowable whose accepting sides depends upon param2 rotation.
+-- used for entry panels, valves, flow sensors and spigots.
+-- this is mostly for legacy reasons and SHOULD NOT BE USED IN NEW CODE.
+register.directional_horizonal_rotate = function(nodename, doubleended)
+	local rotations = {
+		{x= 0,y= 0,z= 1},
+		{x= 1,y= 0,z= 0},
+		{x= 0,y= 0,z=-1},
+		{x=-1,y= 0,z= 0},
+	}
+	local getends = function(node)
+		--local dname = "horizontal rotate getends() "
+		local param2 = node.param2
+		-- the pipeworks nodes use a fixed value for vertical facing nodes
+		-- if that is detected, just return that directly.
+		if param2 == 17 then
+			return {{x=0,y=1,z=0}, {x=0,y=-1,z=0}}
+		end
+
+		-- the sole end of the spigot points in the direction the rotation bits suggest
+		-- also note to self: lua arrays start at one...
+		local mainend = (param2 % 4) + 1
+		-- use modulus wrap-around to find other end for straight-run devices like the valve
+		local otherend = ((param2 + 2) % 4) + 1
+		local mainrot = rotations[mainend]
+		--pipeworks.logger(dname.."mainrot: "..dump(mainrot))
+		local result
+		if doubleended then
+			result = { mainrot, rotations[otherend] }
+		else
+			result = { mainrot }
+		end
+		--pipeworks.logger(dname.."result: "..dump(result))
+		return result
+	end
+	local neighbourfn = function(node)
+		return getends(node)
+	end
+	local directionfn = function(node, direction)
+		local result = false
+		for _, endvec in ipairs(getends(node)) do
+			if vector.equals(direction, endvec) then result = true end
+		end
+		return result
+	end
+	register.directional(nodename, neighbourfn, directionfn)
+end
+
+
+
+local checkbase = function(nodename)
+	if not checkexists(nodename) then error("pipeworks.flowables node doesn't exist as a flowable!") end
+end
+
+local duplicateerr = function(kind, nodename) error(kind.." duplicate registration for "..nodename) end
+
+
+
+-- Registers a node as a fluid intake.
+-- intakefn is used to determine the water that can be taken in a node-specific way.
+-- Expects node to be registered as a flowable (is present in flowables.list.all),
+-- so that water can move out of it.
+-- maxpressure is the maximum pipeline pressure that this node can drive;
+-- if the input's node exceeds this the callback is not run.
+-- possible WISHME here: technic-driven high-pressure pumps
+register.intake = function(nodename, maxpressure, intakefn)
+	-- check for duplicate registration of this node
+	local list = pipeworks.flowables.inputs.list
+	checkbase(nodename)
+	if list[nodename] then duplicateerr("pipeworks.flowables.inputs", nodename) end
+	list[nodename] = { maxpressure=maxpressure, intakefn=intakefn }
+	regwarning("intake", nodename)
+end
+
+
+
+-- Register a node as a simple intake:
+-- tries to absorb water source nodes from it's surroundings.
+-- may exceed limit slightly due to needing to absorb whole nodes.
+register.intake_simple = function(nodename, maxpressure)
+	register.intake(nodename, maxpressure, pipeworks.flowlogic.check_for_liquids_v2)
+end
+
+
+
+-- Register a node as an output.
+-- Expects node to already be a flowable.
+-- upper and lower thresholds have different meanings depending on whether finite liquid mode is in effect.
+-- if not (the default unless auto-detected),
+-- nodes above their upper threshold have their outputfn invoked (and pressure deducted),
+-- nodes between upper and lower are left idle,
+-- and nodes below lower have their cleanup fn invoked (to say remove water sources).
+-- the upper and lower difference acts as a hysteresis to try and avoid "gaps" in the flow.
+-- if finite mode is on, upper is ignored and lower is used to determine whether to run outputfn;
+-- cleanupfn is ignored in this mode as finite mode assumes something causes water to move itself.
+register.output = function(nodename, upper, lower, outputfn, cleanupfn)
+	if pipeworks.flowables.outputs.list[nodename] then
+		error("pipeworks.flowables.outputs duplicate registration!")
+	end
+	checkbase(nodename)
+	pipeworks.flowables.outputs.list[nodename] = {
+		upper=upper,
+		lower=lower,
+		outputfn=outputfn,
+		cleanupfn=cleanupfn,
+	}
+	-- output ABM now part of main flow logic ABM to preserve ordering.
+	-- note that because outputs have to be a flowable first
+	-- (and the installation of the flow logic ABM is conditional),
+	-- registered output nodes for new_flow_logic is also still conditional on the enable flag.
+	regwarning("output node", nodename)
+end
+
+-- register a simple output:
+-- drains pressure by attempting to place water in nearby nodes,
+-- which can be set by passing a list of offset vectors.
+-- will attempt to drain as many whole nodes as there are positions in the offset list.
+-- for meanings of upper and lower, see register.output() above.
+-- non-finite mode:
+--	above upper pressure: places water sources as appropriate, keeps draining pressure.
+--	below lower presssure: removes it's neighbour water sources.
+-- finite mode:
+--	same as for above pressure in non-finite mode,
+--	but only drains pressure when water source nodes are actually placed.
+register.output_simple = function(nodename, upper, lower, neighbours)
+	local outputfn = pipeworks.flowlogic.helpers.make_neighbour_output_fixed(neighbours)
+	local cleanupfn = pipeworks.flowlogic.helpers.make_neighbour_cleanup_fixed(neighbours)
+	register.output(nodename, upper, lower, outputfn, cleanupfn)
+end
+
+
+
+-- common base checking for transition nodes
+-- ensures the node has only been registered once as a transition.
+local transition_list = pipeworks.flowables.transitions.list
+local insert_transition_base = function(nodename)
+	checkbase(nodename)
+	if transition_list[nodename] then duplicateerr("base transition", nodename) end
+	transition_list[nodename] = true
+end
+
+
+
+-- register a simple transition set.
+-- expects a table with nodenames as keys and threshold pressures as values.
+-- internally, the table is sorted by value, and when one of these nodes needs to transition,
+-- the table is searched starting from the lowest (even if it's value is non-zero),
+-- until a value is found which is higher than or equal to the current node pressure.
+-- ex. nodeset = { ["mod:level_0"] = 0, ["mod:level_1"] = 1, --[[ ... ]] }
+local simpleseterror = function(msg)
+	error("register.transition_simple_set(): "..msg)
+end
+local simple_transitions = pipeworks.flowables.transitions.simple
+
+register.transition_simple_set = function(nodeset, extras)
+	local set = {}
+	if extras == nil then extras = {} end
+
+	local length = #nodeset
+	if length < 2 then simpleseterror("nodeset needs at least two elements!") end
+	for index, element in ipairs(nodeset) do
+		if type(element) ~= "table" then simpleseterror("element "..tostring(index).." in nodeset was not table!") end
+		local nodename = element[1]
+		local value = element[2]
+		if type(nodename) ~= "string" then simpleseterror("nodename "..tostring(nodename).."was not a string!") end
+		if type(value) ~= "number" then simpleseterror("pressure value "..tostring(value).."was not a number!") end
+		insert_transition_base(nodename)
+		if simple_transitions[nodename] then duplicateerr("simple transition set", nodename) end
+		-- assigning set to table is done separately below
+
+		table.insert(set, { nodename=nodename, threshold=value })
+	end
+
+	-- sort pressure values, smallest first
+	local smallest_first = function(a, b)
+		return a.threshold < b.threshold
+	end
+	table.sort(set, smallest_first)
+
+	-- individual registration of each node, all sharing this set,
+	-- so each node in the set will transition to the correct target node.
+	for _, element in ipairs(set) do
+		--pipeworks.logger("register.transition_simple_set() after sort: nodename "..element.nodename.." value "..tostring(element.threshold))
+		simple_transitions[element.nodename] = set
+	end
+
+	-- handle extra options
+	-- if mesecons rules table was passed, set for each node
+	if extras.mesecons then
+		local mesecons_rules = pipeworks.flowables.transitions.mesecons
+		for _, element in ipairs(set) do
+			mesecons_rules[element.nodename] = extras.mesecons
+		end
+	end
+end

routing_tubes.lua

@@ -1,119 +0,0 @@
--- the default tube and default textures
-pipeworks.register_tube("pipeworks:tube", "Pneumatic tube segment")
-minetest.register_craft( {
-	output = "pipeworks:tube_1 6",
-	recipe = {
-	        { "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" },
-	        { "", "", "" },
-	        { "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" }
-	},
-})
-
--- the high priority tube is a low-cpu replacement for sorting tubes in situations
--- where players would use them for simple routing (turning off paths)
--- without doing actual sorting, like at outputs of tubedevices that might both accept and eject items
-if pipeworks.enable_priority_tube then
-	local color = "#ff3030:128"
-	pipeworks.register_tube("pipeworks:priority_tube", {
-			description = "High Priority Tube Segment",
-			inventory_image = "pipeworks_tube_inv.png^[colorize:" .. color,
-			plain = { "pipeworks_tube_plain.png^[colorize:" .. color },
-			noctr = { "pipeworks_tube_noctr.png^[colorize:" .. color },
-			ends = { "pipeworks_tube_end.png^[colorize:" .. color },
-			short = "pipeworks_tube_short.png^[colorize:" .. color,
-			node_def = {
-				tube = { priority = 150 } -- higher than tubedevices (100)
-			},
-	})
-	minetest.register_craft( {
-		output = "pipeworks:priority_tube_1 6",
-		recipe = {
-			{ "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" },
-			{ "default:gold_ingot", "", "default:gold_ingot" },
-			{ "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" }
-		},
-	})
-end
-
-if pipeworks.enable_accelerator_tube then
-	pipeworks.register_tube("pipeworks:accelerator_tube", {
-			description = "Accelerating Pneumatic Tube Segment",
-			inventory_image = "pipeworks_accelerator_tube_inv.png",
-			plain = { "pipeworks_accelerator_tube_plain.png" },
-			noctr = { "pipeworks_accelerator_tube_noctr.png" },
-			ends = { "pipeworks_accelerator_tube_end.png" },
-			short = "pipeworks_accelerator_tube_short.png",
-			node_def = {
-				tube = {can_go = function(pos, node, velocity, stack)
-						 velocity.speed = velocity.speed+1
-						 return pipeworks.notvel(pipeworks.meseadjlist, velocity)
-					end}
-			},
-	})
-	minetest.register_craft( {
-		output = "pipeworks:accelerator_tube_1 2",
-		recipe = {
-			{ "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" },
-			{ "default:mese_crystal_fragment", "default:steel_ingot", "default:mese_crystal_fragment" },
-			{ "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" }
-		},
-	})
-end
-
-if pipeworks.enable_crossing_tube then
-	pipeworks.register_tube("pipeworks:crossing_tube", {
-			description = "Crossing Pneumatic Tube Segment",
-			inventory_image = "pipeworks_crossing_tube_inv.png",
-			plain = { "pipeworks_crossing_tube_plain.png" },
-			noctr = { "pipeworks_crossing_tube_noctr.png" },
-			ends = { "pipeworks_crossing_tube_end.png" },
-			short = "pipeworks_crossing_tube_short.png",
-			node_def = {
-				tube = {can_go = function(pos, node, velocity, stack) return {velocity} end }
-			},
-	})
-	minetest.register_craft( {
-		output = "pipeworks:crossing_tube_1 5",
-		recipe = {
-			{ "", "pipeworks:tube_1", "" },
-			{ "pipeworks:tube_1", "pipeworks:tube_1", "pipeworks:tube_1" },
-			{ "", "pipeworks:tube_1", "" }
-		},
-	})
-end
-
-if pipeworks.enable_one_way_tube then
-	minetest.register_node("pipeworks:one_way_tube", {
-		description = "One way tube",
-		tiles = {"pipeworks_one_way_tube_top.png", "pipeworks_one_way_tube_top.png", "pipeworks_one_way_tube_output.png",
-			"pipeworks_one_way_tube_input.png", "pipeworks_one_way_tube_side.png", "pipeworks_one_way_tube_top.png"},
-		paramtype2 = "facedir",
-		drawtype = "nodebox",
-		paramtype = "light",
-		node_box = {type = "fixed",
-			fixed = {{-1/2, -9/64, -9/64, 1/2, 9/64, 9/64}}},
-		groups = {snappy = 2, choppy = 2, oddly_breakable_by_hand = 2, tubedevice = 1},
-		sounds = default.node_sound_wood_defaults(),
-		tube = {
-			connect_sides = {left = 1, right = 1},
-			can_go = function(pos, node, velocity, stack)
-				return {velocity}
-			end,
-			can_insert = function(pos, node, stack, direction)
-				local dir = minetest.facedir_to_right_dir(node.param2)
-				return vector.equals(dir, direction)
-			end,
-			priority = 75 -- Higher than normal tubes, but lower than receivers
-		},
-		after_place_node = pipeworks.after_place,
-		after_dig_node = pipeworks.after_dig,
-	})
-	minetest.register_craft({
-		output = "pipeworks:one_way_tube 2",
-		recipe = {
-			{ "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" },
-			{ "group:stick", "default:mese_crystal", "homedecor:plastic_sheeting" },
-			{ "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" }
-		},
-	})
-end

settingtypes.txt

@@ -0,0 +1,101 @@
+#Enable pipes.
+pipeworks_enable_pipes (Enable Pipes) bool true
+
+#Enable autocrafter.
+pipeworks_enable_autocrafter (Enable Autocrafter) bool true
+
+#Enable deployer.
+pipeworks_enable_deployer (Enable Deployer) bool true
+
+#Enable dispenser.
+pipeworks_enable_dispenser (Enable Dispenser) bool true
+
+#Enable node breaker.
+pipeworks_enable_node_breaker (Enable Node Breaker) bool true
+
+#Enable teleport tube.
+pipeworks_enable_teleport_tube (Enable Teleport Tube) bool true
+
+#Enable pipe devices.
+pipeworks_enable_pipe_devices (Enable Pipe Devices) bool true
+
+#Enable redefines.
+pipeworks_enable_redefines (Enable Node Redefines) bool true
+
+#Enable sorting tube.
+pipeworks_enable_mese_tube (Enable Sorting Tube) bool true
+
+#Enable detector tube.
+pipeworks_enable_detector_tube (Enable Detector Tube) bool true
+
+#Enable digiline detector tube.
+pipeworks_enable_digiline_detector_tube (Enable Digiline Detector Tube) bool true
+
+#Enable mesecon signal conducting tube.
+pipeworks_enable_conductor_tube (Enable Conductor Tube) bool true
+
+#Enable digiline signal conducting tube.
+pipeworks_enable_digiline_conductor_tube (Enable Digiline Conductor Tube) bool true
+
+#Enable accelerator tube.
+pipeworks_enable_accelerator_tube (Enable Accelerator Tube) bool true
+
+#Enable crossing tube.
+#It sends all incoming items to the other side, or if there is no other tube, it sends them back.
+pipeworks_enable_crossing_tube (Enable Crossing Tube) bool true
+
+#Enable vacuum tube.
+#It picks up all items that lay around next to it.
+pipeworks_enable_sand_tube (Enable Vacuum Tube) bool true
+
+#Enable mese vacuum tube.
+#It's like the normal vacuum tube with the
+#differance that you can set the radius up to 8 nodes.
+pipeworks_enable_mese_sand_tube (Enable Mese Vacuum Tube) bool true
+
+#Enable one way tube.
+#It sends items only in one direction.
+#Use it to drop items out of tubes.
+pipeworks_enable_one_way_tube (Enable One Way Tube) bool true
+
+#Enable high priority tube.
+#It has a very high priority and so, on crossings, the items will
+#always go to it if there are multible ways.
+pipeworks_enable_priority_tube (Enable High Priority Tube) bool true
+
+#Enable lua controlled tube.
+#It is comparable with mesecons luacontroller.
+pipeworks_enable_lua_tube (Enable Lua controlled Tube) bool true
+
+#Enable cyclic mode.
+pipeworks_enable_cyclic_mode (Enable Cyclic Mode) bool true
+
+#Drop on routing fail.
+pipeworks_drop_on_routing_fail (Drop On Routing Fail) bool false
+
+#Delete item on clearobject.
+pipeworks_delete_item_on_clearobject (Delete Item On Clearobject) bool true
+
+#Use real visible entities in tubes within active areas.
+#When disabled, tubes are made opaque.
+pipeworks_use_real_entities (Use Real Entities) bool true
+
+#Target interval between tube entity steps.
+#A high value may cause issues with tube entity visuals.
+#A value 0.2 or above may cause issues with accelerator tubes.
+pipeworks_entity_update_interval (Entity Update Interval) float 0 0 0.8
+
+# Use the default rules from the digilines mod.
+# If enabled the following devices will connect to digiline networks in the vertical direction:
+# digiline filter injector, deployer, dispenser, node breaker, autocrafter
+# This breaks expected behavior with digiline conducting tubes.
+# If disabled, the devices will not be able to send or recieve digiline signals from the top
+# or bottom faces, regardless of the node rotation.
+enable_vertical_digilines_connectivity (Use the default rules from the digilines mod) bool false
+
+# if set to true, items passing through teleport tubes will log log where they came from and where they went.
+pipeworks_log_teleport_tubes (Log Teleport Tubes) bool false
+
+# Behavior of print() inside a lua tube. By default, this emits a message into actionstream.
+# Set it to noop if you wish to disable that behavior.
+pipeworks_lua_tube_print_behavior (Behavior of print in Lua Tube) enum log log,noop

signal_tubes.lua

@@ -1,160 +0,0 @@
-if pipeworks.enable_detector_tube then
-	local detector_tube_step = 2 * tonumber(minetest.setting_get("dedicated_server_step"))
-	pipeworks.register_tube("pipeworks:detector_tube_on", {
-			description = "Detecting Pneumatic Tube Segment on (you hacker you)",
-			inventory_image = "pipeworks_detector_tube_inv.png",
-			plain = { "pipeworks_detector_tube_plain.png" },
-			node_def = {
-				tube = {can_go = function(pos, node, velocity, stack)
-						 local meta = minetest.get_meta(pos)
-						 local name = minetest.get_node(pos).name
-						 local nitems = meta:get_int("nitems")+1
-						 meta:set_int("nitems", nitems)
-						 local saved_pos = vector.new(pos)
-						 minetest.after(detector_tube_step, minetest.registered_nodes[name].item_exit, saved_pos)
-						 return pipeworks.notvel(pipeworks.meseadjlist,velocity)
-					end},
-				groups = {mesecon = 2, not_in_creative_inventory = 1},
-				drop = "pipeworks:detector_tube_off_1",
-				mesecons = {receptor = {state = "on", rules = pipeworks.mesecons_rules}},
-				item_exit = function(pos)
-					local meta = minetest.get_meta(pos)
-					local nitems = meta:get_int("nitems")-1
-					local node = minetest.get_node(pos)
-					local name = node.name
-					local fdir = node.param2
-					if nitems == 0 then
-						 minetest.set_node(pos, {name = string.gsub(name, "on", "off"), param2 = fdir})
-						 mesecon.receptor_off(pos, pipeworks.mesecons_rules)
-					else
-						 meta:set_int("nitems", nitems)
-					end
-				end,
-				on_construct = function(pos)
-					 local meta = minetest.get_meta(pos)
-					 meta:set_int("nitems", 1)
-					 local name = minetest.get_node(pos).name
-					 local saved_pos = vector.new(pos)
-					 minetest.after(detector_tube_step, minetest.registered_nodes[name].item_exit, saved_pos)
-				end,
-			},
-	})
-	pipeworks.register_tube("pipeworks:detector_tube_off", {
-			description = "Detecting Pneumatic Tube Segment",
-			inventory_image = "pipeworks_detector_tube_inv.png",
-			plain = { "pipeworks_detector_tube_plain.png" },
-			node_def = {
-				tube = {can_go = function(pos, node, velocity, stack)
-						local node = minetest.get_node(pos)
-						local name = node.name
-						local fdir = node.param2
-						minetest.set_node(pos,{name = string.gsub(name, "off", "on"), param2 = fdir})
-						mesecon.receptor_on(pos, pipeworks.mesecons_rules)
-						return pipeworks.notvel(pipeworks.meseadjlist, velocity)
-					end},
-				groups = {mesecon = 2},
-				mesecons = {receptor = {state = "off", rules = pipeworks.mesecons_rules }},
-			},
-	})
-
-	minetest.register_craft( {
-		output = "pipeworks:detector_tube_off_1 2",
-		recipe = {
-			{ "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" },
-			{ "mesecons:mesecon", "mesecons_materials:silicon", "mesecons:mesecon" },
-			{ "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" }
-		},
-	})
-end
-
-if minetest.get_modpath("digilines") and pipeworks.enable_digiline_detector_tube then
-	pipeworks.register_tube("pipeworks:digiline_detector_tube", {
-			description = "Digiline Detecting Pneumatic Tube Segment",
-			inventory_image = "pipeworks_digiline_detector_tube_inv.png",
-			plain = { "pipeworks_digiline_detector_tube_plain.png" },
-			node_def = {
-				tube = {can_go = function(pos, node, velocity, stack)
-						local meta = minetest.get_meta(pos)
-
-						local setchan = meta:get_string("channel")
-
-						digiline:receptor_send(pos, digiline.rules.default, setchan, stack:to_string())
-
-						return pipeworks.notvel(pipeworks.meseadjlist, velocity)
-					end},
-				on_construct = function(pos)
-					local meta = minetest.get_meta(pos)
-					meta:set_string("formspec",
-						"size[8.6,2.2]"..
-						"field[0.6,0.6;8,1;channel;Channel:;${channel}]"..
-						"image[0.3,1.3;1,1;pipeworks_digiline_detector_tube_inv.png]"..
-						"label[1.6,1.2;Digiline Detecting Tube]"
-					)
-				end,
-				on_receive_fields = function(pos, formname, fields, sender)
-					if fields.channel then
-						minetest.get_meta(pos):set_string("channel", fields.channel)
-					end
-				end,
-				groups = {},
-				digiline = {
-					receptor = {},
-					effector = {
-						action = function(pos,node,channel,msg) end
-					}
-				},
-			},
-	})
-
-	minetest.register_craft( {
-		output = "pipeworks:digiline_detector_tube_1 2",
-		recipe = {
-			{ "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" },
-			{ "digilines:wire_std_00000000", "mesecons_materials:silicon", "digilines:wire_std_00000000" },
-			{ "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" }
-		},
-	})
-end
-
-if pipeworks.enable_conductor_tube then
-	pipeworks.register_tube("pipeworks:conductor_tube_off", {
-			description = "Conducting Pneumatic Tube Segment",
-			inventory_image = "pipeworks_conductor_tube_inv.png",
-			short = "pipeworks_conductor_tube_short.png",
-			plain = { "pipeworks_conductor_tube_plain.png" },
-			noctr = { "pipeworks_conductor_tube_noctr.png" },
-			ends = { "pipeworks_conductor_tube_end.png" },
-			node_def = {
-				groups = {mesecon = 2},
-				mesecons = {conductor = {state = "off",
-							  rules = pipeworks.mesecons_rules,
-							  onstate = "pipeworks:conductor_tube_on_#id"}}
-			},
-	})
-	pipeworks.register_tube("pipeworks:conductor_tube_on", {
-			description = "Conducting Pneumatic Tube Segment on (you hacker you)",
-			inventory_image = "pipeworks_conductor_tube_inv.png",
-			short = "pipeworks_conductor_tube_short.png",
-			plain = { "pipeworks_conductor_tube_on_plain.png" },
-			noctr = { "pipeworks_conductor_tube_on_noctr.png" },
-			ends = { "pipeworks_conductor_tube_on_end.png" },
-			node_def = {
-				groups = {mesecon = 2, not_in_creative_inventory = 1},
-				drop = "pipeworks:conductor_tube_off_1",
-				mesecons = {conductor = {state = "on",
-							  rules = pipeworks.mesecons_rules,
-							  offstate = "pipeworks:conductor_tube_off_#id"}}
-			},
-	})
-
-	minetest.register_craft( {
-		output = "pipeworks:conductor_tube_off_1 6",
-		recipe = {
-			{ "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" },
-			{ "mesecons:mesecon", "mesecons:mesecon", "mesecons:mesecon" },
-			{ "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" }
-		},
-	})
-end
-
-

signs_compat.lua

@@ -0,0 +1,241 @@
+-- This file adds placement rules for signs_lib, if present
+
+local spv = {
+	[4] = true,
+	[6] = true,
+	[8] = true,
+	[10] = true,
+	[13] = true,
+	[15] = true,
+	[17] = true,
+	[19] = true
+}
+
+local sphns = {
+	[1] = true,
+	[3] = true,
+	[5] = true,
+	[7] = true,
+	[9] = true,
+	[11] = true,
+	[21] = true,
+	[23] = true
+}
+
+local sphew = {
+	[0] = true,
+	[2] = true,
+	[12] = true,
+	[14] = true,
+	[16] = true,
+	[18] = true,
+	[20] = true,
+	[22] = true
+}
+
+local owtv = {
+	[5] = true,
+	[7] = true,
+	[9] = true,
+	[11] = true,
+	[12] = true,
+	[14] = true,
+	[16] = true,
+	[18] = true
+}
+
+local owtns = {
+	[0] = true,
+	[2] = true,
+	[4] = true,
+	[6] = true,
+	[8] = true,
+	[10] = true,
+	[20] = true,
+	[22] = true
+}
+
+local owtew = {
+	[1] = true,
+	[3] = true,
+	[13] = true,
+	[15] = true,
+	[17] = true,
+	[19] = true,
+	[21] = true,
+	[23] = true
+}
+
+local vert_n = {
+	[3] = {[5] = true},
+	[6] = {[9] = true, [12] = true, [16] = true},
+	[7] = {[9] = true, [11] = true},
+}
+
+local vert_e = {
+	[3] = {[5] = true},
+	[6] = {[5] = true, [9] = true, [16] = true},
+	[7] = {[7] = true, [11] = true},
+}
+
+local vert_s = {
+	[3] = {[5] = true},
+	[6] = {[5] = true, [12] = true, [16] = true},
+	[7] = {[5] = true, [7] = true},
+}
+
+local vert_w = {
+	[3] = {[5] = true},
+	[6] = {[5] = true, [9] = true, [12] = true},
+	[7] = {[5] = true, [9] = true},
+}
+
+local horiz_n = {
+	[3] = {[0] = true},
+	[6] = {[0] = true, [4] = true, [20] = true},
+	[7] = {[2] = true, [10] = true},
+	[8] = {[0] = true},
+	[9] = {[2] = true},
+}
+
+local horiz_e = {
+	[3] = {[1] = true},
+	[6] = {[1] = true, [17] = true, [21] = true},
+	[7] = {[3] = true, [19] = true},
+	[8] = {[1] = true},
+	[9] = {[3] = true},
+}
+
+local horiz_s = {
+	[3] = {[0] = true},
+	[6] = {[0] = true, [8] = true, [20] = true},
+	[7] = {[0] = true, [4] = true},
+	[8] = {[0] = true},
+	[9] = {[0] = true},
+}
+
+local horiz_w = {
+	[3] = {[1] = true},
+	[6] = {[1] = true, [13] = true, [21] = true},
+	[7] = {[1] = true, [13] = true},
+	[8] = {[1] = true},
+	[9] = {[1] = true},
+}
+
+local function get_sign_dir(node, def)
+	if (node.param2 == 4 and def.paramtype2 == "wallmounted")
+	  or (node.param2 == 0 and def.paramtype2 ~= "wallmounted") then
+		return {["N"] = true}
+	elseif (node.param2 == 2 and def.paramtype2 == "wallmounted")
+	  or (node.param2 == 1 and def.paramtype2 ~= "wallmounted") then
+		return {["E"] = true}
+	elseif (node.param2 == 5 and def.paramtype2 == "wallmounted")
+	  or (node.param2 == 2 and def.paramtype2 ~= "wallmounted") then
+		return {["S"] = true}
+	elseif node.param2 == 3 then
+		return {["W"] = true}
+	end
+	return {}
+end
+
+--[[
+In the functions below:
+
+ pos: the (real) position of the placed sign
+ node: the sign node itself
+ def: its definition
+
+ ppos: the position of the pointed node (pipe/tube)
+ pnode: the node itself
+ pdef: its definition
+
+--]]
+
+
+-- pipes
+
+function pipeworks.check_for_vert_pipe(pos, node, def, ppos, pnode, pdef)
+	local signdir = get_sign_dir(node, def)
+	local pipenumber = pdef.pipenumber
+	local pipedir = pnode.param2
+	if string.find(pnode.name, "straight_pipe") and spv[pipedir] then
+		return true
+	elseif signdir["N"] and vert_n[pipenumber] and vert_n[pipenumber][pipedir] then
+		return true
+	elseif signdir["E"] and vert_e[pipenumber] and vert_e[pipenumber][pipedir] then
+		return true
+	elseif signdir["S"] and vert_s[pipenumber] and vert_s[pipenumber][pipedir] then
+		return true
+	elseif signdir["W"] and vert_w[pipenumber] and vert_w[pipenumber][pipedir] then
+		return true
+	end
+end
+
+function pipeworks.check_for_horiz_pipe(pos, node, def, ppos, pnode, pdef)
+	local signdir = get_sign_dir(node, def)
+	local pipenumber = pdef.pipenumber
+	local pipedir = pnode.param2
+	if string.find(pnode.name, "straight_pipe") then
+		if (signdir["N"] or signdir["S"]) and sphns[pipedir] then
+			return true
+		elseif (signdir["E"] or signdir["W"]) and sphew[pipedir] then
+			return true
+		end
+	elseif signdir["N"] and horiz_n[pipenumber] and horiz_n[pipenumber][pipedir] then
+		return true
+	elseif signdir["E"] and horiz_e[pipenumber] and horiz_e[pipenumber][pipedir] then
+		return true
+	elseif signdir["S"] and horiz_s[pipenumber] and horiz_s[pipenumber][pipedir] then
+		return true
+	elseif signdir["W"] and horiz_w[pipenumber] and horiz_w[pipenumber][pipedir] then
+		return true
+	end
+end
+
+-- tubes
+
+function pipeworks.check_for_vert_tube(pos, node, def, ppos, pnode, pdef)
+	local signdir = get_sign_dir(node, def)
+	local tubenumber = pdef.tubenumber
+	local tubedir = pnode.param2
+	if pnode.name == "pipeworks:one_way_tube" and owtv[tubedir] then
+		return true
+	elseif tubenumber == 2 and (tubedir == 5 or tubedir == 7) then -- it's a stub pointing up or down
+		return true
+	elseif signdir["N"] and vert_n[tubenumber] and vert_n[tubenumber][tubedir] then
+		return true
+	elseif signdir["E"] and vert_e[tubenumber] and vert_e[tubenumber][tubedir] then
+		return true
+	elseif signdir["S"] and vert_s[tubenumber] and vert_s[tubenumber][tubedir] then
+		return true
+	elseif signdir["W"] and vert_w[tubenumber] and vert_w[tubenumber][tubedir] then
+		return true
+	end
+end
+
+function pipeworks.check_for_horiz_tube(pos, node, def, ppos, pnode, pdef)
+	local signdir = get_sign_dir(node, def)
+	local tubenumber = pdef.tubenumber
+	local tubedir = pnode.param2
+	if tubenumber == 2 then -- it'a a stub pointing sideways
+		if (tubedir == 0 or tubedir == 2) and (signdir["N"] or signdir["S"]) then
+			return true
+		elseif (tubedir == 1 or tubedir == 3) and (signdir["E"] or signdir["W"]) then
+			return true
+		end
+	elseif pnode.name == "pipeworks:one_way_tube" then
+		if (signdir["N"] or signdir["S"]) and owtns[tubedir] then
+			return true
+		elseif (signdir["E"] or signdir["W"]) and owtew[tubedir] then
+			return true
+		end
+	elseif signdir["N"] and horiz_n[tubenumber] and horiz_n[tubenumber][tubedir] then
+		return true
+	elseif signdir["E"] and horiz_e[tubenumber] and horiz_e[tubenumber][tubedir] then
+		return true
+	elseif signdir["S"] and horiz_s[tubenumber] and horiz_s[tubenumber][tubedir] then
+		return true
+	elseif signdir["W"] and horiz_w[tubenumber] and horiz_w[tubenumber][tubedir] then
+		return true
+	end
+end

teleport_tube.lua

@@ -1,242 +0,0 @@
-local filename=minetest.get_worldpath() .. "/teleport_tubes"
-
-local tp_tube_db = nil -- nil forces a read
-local tp_tube_db_version = 2.0
-
-local function hash(pos)
-	return string.format("%d", minetest.hash_node_position(pos))
-end
-
-local function save_tube_db()
-	local file, err = io.open(filename, "w")
-	if file then
-		tp_tube_db.version = tp_tube_db_version
-		file:write(minetest.serialize(tp_tube_db))
-		tp_tube_db.version = nil
-		io.close(file)
-	else
-		error(err)
-	end
-end
-
-local function migrate_tube_db()
-		local tmp_db = {}
-		tp_tube_db.version = nil
-		for key, val in pairs(tp_tube_db) do
-			if(val.channel ~= "") then -- skip unconfigured tubes
-				tmp_db[hash(val)] = val
-			end
-		end
-		tp_tube_db = tmp_db
-		save_tube_db()
-end
-
-local function read_tube_db()
-	local file = io.open(filename, "r")
-	if file ~= nil then
-		local file_content = file:read("*all")
-		io.close(file)
-
-		if file_content and file_content ~= "" then
-			tp_tube_db = minetest.deserialize(file_content)
-			if(not tp_tube_db.version or tonumber(tp_tube_db.version) < tp_tube_db_version) then
-				migrate_tube_db()
-			end
-			tp_tube_db.version = nil -- we add it back when saving
-			return tp_tube_db -- we read sucessfully
-		end
-	end
-	tp_tube_db = {}
-	return tp_tube_db
-end
-
--- updates or adds a tube
-local function set_tube(pos, channel, can_receive)
-	local tubes = tp_tube_db or read_tube_db()
-	local hash = hash(pos)
-	local tube = tubes[hash]
-	if tube then
-		tube.channel = channel
-		tube.cr = can_receive
-		save_tube_db()
-		return
-	end
-
-	-- we haven't found any tp tube to update, so lets add it
-	tp_tube_db[hash] = {x=pos.x,y=pos.y,z=pos.z,channel=channel,cr=can_receive}
-	save_tube_db()
-end
-
-local function remove_tube(pos)
-	local tubes = tp_tube_db or read_tube_db()
-	tubes[hash(pos)] = nil
-	save_tube_db()
-end
-
-local function read_node_with_vm(pos)
-	local vm = VoxelManip()
-	local MinEdge, MaxEdge = vm:read_from_map(pos, pos)
-	local data = vm:get_data()
-	local area = VoxelArea:new({MinEdge = MinEdge, MaxEdge = MaxEdge})
-	return minetest.get_name_from_content_id(data[area:index(pos.x, pos.y, pos.z)])
-end
-
-local function get_receivers(pos, channel)
-	local tubes = tp_tube_db or read_tube_db()
-	local receivers = {}
-	local dirty = false
-	for key, val in pairs(tubes) do
-		-- skip all non-receivers and the tube that it came from as early as possible, as this is called often
-		if (val.cr == 1 and val.channel == channel and (val.x ~= pos.x or val.y ~= pos.y or val.z ~= pos.z)) then
-			local is_loaded = (minetest.get_node_or_nil(val) ~= nil)
-			local node_name = is_loaded and minetest.get_node(pos).name or read_node_with_vm(val)
-
-			if minetest.registered_nodes[node_name] and minetest.registered_nodes[node_name].is_teleport_tube then
-				table.insert(receivers, val)
-			else
-				tp_tube_db[key] = nil
-				dirty = true
-			end
-		end
-	end
-	if dirty then
-		save_tube_db()
-	end
-	return receivers
-end
-
-local function update_meta(meta, can_receive)
-	meta:set_int("can_receive", can_receive and 1 or 0)
-	local cr_state = can_receive and "on" or "off"
-	meta:set_string("formspec","size[8.6,2.2]"..
-			"field[0.6,0.6;7,1;channel;Channel:;${channel}]"..
-			"label[7.3,0;Receive]"..
-			"image_button[7.3,0.3;1,1;pipeworks_button_" .. cr_state .. ".png;cr" .. (can_receive and 0 or 1) .. ";;;false;pipeworks_button_interm.png]"..
-			"image[0.3,1.3;1,1;pipeworks_teleport_tube_inv.png]"..
-			"label[1.6,1.2;channels are public by default]" ..
-			"label[1.6,1.5;use <player>:<channel> for fully private channels]" ..
-			"label[1.6,1.8;use <player>\\;<channel> for private receivers]" ..
-			default.gui_bg..
-			default.gui_bg_img)
-end
-
-pipeworks.register_tube("pipeworks:teleport_tube", {
-	description = "Teleporting Pneumatic Tube Segment",
-	inventory_image = "pipeworks_teleport_tube_inv.png",
-	noctr = { "pipeworks_teleport_tube_noctr.png" },
-	plain = { "pipeworks_teleport_tube_plain.png" },
-	ends = { "pipeworks_teleport_tube_end.png" },
-	short = "pipeworks_teleport_tube_short.png",
-	node_def = {
-		is_teleport_tube = true,
-		tube = {
-			can_go = function(pos,node,velocity,stack)
-				velocity.x = 0
-				velocity.y = 0
-				velocity.z = 0
-
-				local channel = minetest.get_meta(pos):get_string("channel")
-				if channel == "" then return {} end
-
-				local target = get_receivers(pos, channel)
-				if target[1] == nil then return {} end
-
-				local d = math.random(1,#target)
-				pos.x = target[d].x
-				pos.y = target[d].y
-				pos.z = target[d].z
-				return pipeworks.meseadjlist
-			end
-		},
-		on_construct = function(pos)
-			local meta = minetest.get_meta(pos)
-			update_meta(meta, true)
-			meta:set_string("infotext", "unconfigured Teleportation Tube")
-		end,
-		on_receive_fields = function(pos,formname,fields,sender)
-			if not fields.channel -- ignore escaping or clientside manipulation of the form
-			or not pipeworks.may_configure(pos, sender) then
-				return
-			end
-			local new_channel = tostring(fields.channel):trim()
-
-			local meta = minetest.get_meta(pos)
-			local can_receive = meta:get_int("can_receive")
-
-			-- check for private channels each time before actually changing anything
-			-- to not even allow switching between can_receive states of private channels
-			if new_channel ~= "" then
-				local sender_name = sender:get_player_name()
-				local name, mode = new_channel:match("^([^:;]+)([:;])")
-				if name and mode and name ~= sender_name then
-					--channels starting with '[name]:' can only be used by the named player
-					if mode == ":" then
-						minetest.chat_send_player(sender_name, "Sorry, channel '"..new_channel.."' is reserved for exclusive use by "..name)
-						return
-				
-					--channels starting with '[name];' can be used by other players, but cannot be received from
-					elseif mode == ";" and (fields.cr1 or (can_receive ~= 0 and not fields.cr0)) then
-						minetest.chat_send_player(sender_name, "Sorry, receiving from channel '"..new_channel.."' is reserved for "..name)
-						return
-					end
-				end
-			end
-
-			local dirty = false
-
-			-- was the channel changed?
-			local channel = meta:get_string("channel")
-			if new_channel ~= channel then
-				channel = new_channel
-				meta:set_string("channel", channel)
-				dirty = true
-			end
-
-			-- test if a can_receive button was pressed
-			if fields.cr0 and can_receive ~= 0 then
-				can_receive = 0
-				update_meta(meta, false)
-				dirty = true
-			elseif fields.cr1 and can_receive ~= 1 then
-				can_receive = 1
-				update_meta(meta, true)
-				dirty = true
-			end
-
-			-- save if we changed something, handle the empty channel while we're at it
-			if dirty then
-				if channel ~= "" then
-					set_tube(pos, channel, can_receive)
-					local cr_description = (can_receive == 1) and "sending and receiving" or "sending"
-					meta:set_string("infotext", string.format("Teleportation Tube %s on '%s'", cr_description, channel))
-				else
-					-- remove empty channel tubes, to not have to search through them
-					remove_tube(pos)
-					meta:set_string("infotext", "unconfigured Teleportation Tube")
-				end
-			end
-		end,
-		on_destruct = function(pos)
-			remove_tube(pos)
-		end
-	},
-})
-minetest.register_craft( {
-	output = "pipeworks:teleport_tube_1 2",
-	recipe = {
-	        { "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" },
-	        { "default:desert_stone", "default:mese", "default:desert_stone" },
-	        { "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" }
-	},
-})
-
-if minetest.get_modpath("mesecons_mvps") ~= nil then
-	mesecon.register_on_mvps_move(function(moved_nodes)
-		for _, n in ipairs(moved_nodes) do
-			if string.find(n.node.name, "pipeworks:teleport_tube") ~= nil then
-				local meta = minetest.get_meta(n.pos)
-				set_tube(n.pos, meta:get_string("channel"), meta:get_int("can_receive"))
-			end
-		end
-	end)
-end