add minimum minetest version key for contentdb

Prevent the node breaker from digging all nodes

See merge request VanessaE/pipeworks!19

.gitignore

@@ -1 +1,22 @@
+## Files related to minetest 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/*

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.
+
+  As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
+  "The Library" refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
+
+  An "Application" is any work that makes use of an interface provided
+by the Library, but which is not otherwise based on the Library.
+Defining a subclass of a class defined by the Library is deemed a mode
+of using an interface provided by the Library.
+
+  A "Combined Work" is a work produced by combining or linking an
+Application with the Library.  The particular version of the Library
+with which the Combined Work was made is also called the "Linked
+Version".
+
+  The "Minimal Corresponding Source" for a Combined Work means the
+Corresponding Source for the Combined Work, excluding any source code
+for portions of the Combined Work that, considered in isolation, are
+based on the Application, and not on the Linked Version.
+
+  The "Corresponding Application Code" for a Combined Work means the
+object code and/or source code for the Application, including any data
+and utility programs needed for reproducing the Combined Work from the
+Application, but excluding the System Libraries of the Combined Work.
+
+  1. Exception to Section 3 of the GNU GPL.
+
+  You may convey a covered work under sections 3 and 4 of this License
+without being bound by section 3 of the GNU GPL.
+
+  2. Conveying Modified Versions.
+
+  If you modify a copy of the Library, and, in your modifications, a
+facility refers to a function or data to be supplied by an Application
+that uses the facility (other than as an argument passed when the
+facility is invoked), then you may convey a copy of the modified
+version:
+
+   a) under this License, provided that you make a good faith effort to
+   ensure that, in the event an Application does not supply the
+   function or data, the facility still operates, and performs
+   whatever part of its purpose remains meaningful, or
+
+   b) under the GNU GPL, with none of the additional permissions of
+   this License applicable to that copy.
+
+  3. Object Code Incorporating Material from Library Header Files.
+
+  The object code form of an Application may incorporate material from
+a header file that is part of the Library.  You may convey such object
+code under terms of your choice, provided that, if the incorporated
+material is not limited to numerical parameters, data structure
+layouts and accessors, or small macros, inline functions and templates
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+
+   a) Give prominent notice with each copy of the object code that the
+   Library is used in it and that the Library and its use are
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+  4. Combined Works.
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+  You may convey a Combined Work under terms of your choice that,
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+
+   b) Accompany the Combined Work with a copy of the GNU GPL and this license
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+   c) For a Combined Work that displays copyright notices during
+   execution, include the copyright notice for the Library among
+   these notices, as well as a reference directing the user to the
+   copies of the GNU GPL and this license document.
+
+   d) Do one of the following:
+
+       0) Convey the Minimal Corresponding Source under the terms of this
+       License, and the Corresponding Application Code in a form
+       suitable for, and under terms that permit, the user to
+       recombine or relink the Application with a modified version of
+       the Linked Version to produce a modified Combined Work, in the
+       manner specified by section 6 of the GNU GPL for conveying
+       Corresponding Source.
+
+       1) Use a suitable shared library mechanism for linking with the
+       Library.  A suitable mechanism is one that (a) uses at run time
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+  5. Combined Libraries.
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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://gitlab.com/VanessaE/pipeworks/wikis/ 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 

autocrafter.lua

@@ -1,3 +1,4 @@
+local S = minetest.get_translator("pipeworks")
 local autocrafterCache = {}  -- caches some recipe data to avoid to call the slow function minetest.get_craft_result() every second
 
 local craft_time = 1
@@ -16,7 +17,7 @@ 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 description = def and def.description or S("Unknown item")
 	return description, name
 end
 
@@ -68,7 +69,7 @@ local function run_autocrafter(pos, elapsed)
 	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
 
@@ -101,7 +102,8 @@ local function after_recipe_change(pos, inventory)
 	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")
+		meta:set_string("infotext", S("unconfigured Autocrafter"))
+		inventory:set_stack("output", 1, "")
 		return
 	end
 	local recipe_changed = false
@@ -125,7 +127,7 @@ local function after_recipe_change(pos, inventory)
 	craft = craft or 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)
@@ -171,32 +173,41 @@ end
 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]"..
+	local fs = 	"size[8,12]"..
 			"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;]"..
+			"image_button[3,2;1,0.6;pipeworks_button_" .. state .. ".png;" .. state .. ";;;false;pipeworks_button_interm.png]" ..
+			"list[context;src;0,4.5;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;]")
+			default.get_hotbar_bg(0,8) ..
+			"list[current_player;main;0,8;8,4;]" ..
+			"listring[current_player;main]"..
+			"listring[context;src]" ..
+			"listring[current_player;main]"..
+			"listring[context;dst]" ..
+			"listring[current_player;main]"
+	if minetest.get_modpath("digilines") then
+		fs = fs.."field[1,3.5;4,1;channel;"..S("Channel")..";${channel}]"
+		fs = fs.."button_exit[5,3.2;2,1;save;"..S("Save").."]"
+	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
@@ -216,7 +227,7 @@ 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")
@@ -238,7 +249,7 @@ local function upgrade_autocrafter(pos, meta)
 end
 
 minetest.register_node("pipeworks:autocrafter", {
-	description = "Autocrafter",
+	description = S("Autocrafter"),
 	drawtype = "normal",
 	tiles = {"pipeworks_autocrafter.png"},
 	groups = {snappy = 3, tubedevice = 1, tubedevice_receiver = 1},
@@ -275,6 +286,8 @@ minetest.register_node("pipeworks:autocrafter", {
 			if update_meta(meta, true) then
 				start_crafter(pos)
 			end
+		elseif fields.save then
+			meta:set_string("channel",fields.channel)
 		end
 	end,
 	can_dig = function(pos, player)
@@ -355,14 +368,47 @@ minetest.register_node("pipeworks:autocrafter", {
 		after_inventory_change(pos)
 		return count
 	end,
-	on_timer = run_autocrafter
+	on_timer = run_autocrafter,
+	digiline = {
+		receptor = {},
+		effector = {
+			action = function(pos,node,channel,msg)
+				local meta = minetest.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
+						for x=1,3,1 do
+							local slot = y*3+x
+							if minetest.registered_items[msg[y+1][x]] then
+								inv:set_stack("recipe",slot,ItemStack(msg[y+1][x]))
+							else
+								inv:set_stack("recipe",slot,ItemStack(""))
+							end
+						end
+					end
+					after_recipe_change(pos,inv)
+				elseif msg == "off" then
+					update_meta(meta, false)
+					minetest.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,
+		},
+	},
 })
 
 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" },
+	        { "basic_materials:plastic_sheet", "default:steel_ingot", "basic_materials:plastic_sheet" },
 	        { "default:steel_ingot", "default:mese_crystal", "default:steel_ingot" }
 	},
 })

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 minetest.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

@@ -1,6 +1,71 @@
--- 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 minetest.facedir_to_dir(nodetable.nxm.param2).x ~= 0 then
+		pxm=1
+	end
+
+	if string.find(nodetable.nxp.name, pattern)
+	  and minetest.facedir_to_dir(nodetable.nxp.param2).x ~= 0 then
+		pxp=1
+	end
+
+	if string.find(nodetable.nzm.name, pattern)
+	  and minetest.facedir_to_dir(nodetable.nzm.param2).z ~= 0 then
+		pzm=1
+	end
+
+	if string.find(nodetable.nzp.name, pattern)
+	  and minetest.facedir_to_dir(nodetable.nzp.param2).z ~= 0 then
+		pzp=1
+	end
+
+	if string.find(nodetable.nym.name, pattern)
+	  and minetest.facedir_to_dir(nodetable.nym.param2).y ~= 0 then
+		pym=1
+	end
+
+	if string.find(nodetable.nyp.name, pattern)
+	  and minetest.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 state = "_empty"
@@ -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
@@ -40,152 +105,114 @@ function pipeworks.scan_pipe_surroundings(pos)
 	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 })
 
-	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
+-- ...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
+
+-- ... other nodes
+
+	local def_left   = minetest.registered_nodes[nxp.name] -- the node that {pos} is to the left of (not the
+	local def_right  = minetest.registered_nodes[nxm.name] -- ...note that is AT the left!), etc.
+	local def_bottom = minetest.registered_nodes[nyp.name]
+	local def_top    = minetest.registered_nodes[nym.name]
+	local def_front  = minetest.registered_nodes[nzp.name]
+	local def_back   = minetest.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 (string.find(nzm.name, "pipeworks:entry_panel") ~= nil)
-	  and (nzm.param2 == 0 or nzm.param2 == 2) then
+	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
---
-
+	print("stage 2 returns "..pxm+8*pxp+2*pym+16*pyp+4*pzm+32*pzp..
+		" for nodes surrounding "..minetest.get_node(pos).name.." at "..minetest.pos_to_string(pos))
 	return pxm+8*pxp+2*pym+16*pyp+4*pzm+32*pzp
 end
 
@@ -197,4 +224,3 @@ function pipeworks.look_for_stackable_tanks(pos)
 		minetest.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
@@ -11,23 +11,23 @@ local function nodeside(node, tubedir)
 	end
 
 	local backdir = minetest.facedir_to_dir(node.param2)
-	local back = vector.dot(backdir, tubedir)
+	local back = pipeworks.vector_dot(backdir, tubedir)
 	if back == 1 then
 		return "back"
 	elseif back == -1 then
 		return "front"
 	end
 
-	local topdir = minetest.facedir_to_top_dir(node.param2)
-	local top = vector.dot(topdir, tubedir)
+	local topdir = pipeworks.facedir_to_top_dir(node.param2)
+	local top = pipeworks.vector_dot(topdir, tubedir)
 	if top == 1 then
 		return "top"
 	elseif top == -1 then
 		return "bottom"
 	end
 
-	local rightdir = minetest.facedir_to_right_dir(node.param2)
-	local right = vector.dot(rightdir, tubedir)
+	local rightdir = pipeworks.facedir_to_right_dir(node.param2)
+	local right = pipeworks.vector_dot(rightdir, tubedir)
 	if right == 1 then
 		return "right"
 	else
@@ -99,7 +99,7 @@ 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
 
@@ -111,6 +111,22 @@ function pipeworks.after_dig(pos)
 	pipeworks.scan_for_tube_objects(pos)
 end
 
+-- 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
+	minetest.swap_node(pos, node)
+	pipeworks.scan_for_tube_objects(pos)
+	return true
+end
+
 if minetest.get_modpath("mesecons_mvps") then
 	mesecon.register_on_mvps_move(function(moved_nodes)
 		for _, n in ipairs(moved_nodes) do

changelog.txt

@@ -1,6 +1,55 @@
 Changelog
 ---------
 
+
+
+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!

common.lua

@@ -2,7 +2,7 @@
 -- Vector functions --
 ----------------------
 
-function vector.cross(a, b)
+function pipeworks.vector_cross(a, b)
 	return {
 		x = a.y * b.z - a.z * b.y,
 		y = a.z * b.x - a.x * b.z,
@@ -10,7 +10,7 @@ function vector.cross(a, b)
 	}
 end
 
-function vector.dot(a, b)
+function pipeworks.vector_dot(a, b)
 	return a.x * b.x + a.y * b.y + a.z * b.z
 end
 
@@ -18,7 +18,7 @@ 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 +28,15 @@ function minetest.facedir_to_top_dir(facedir)
 		[math.floor(facedir / 4)]
 end
 
-function minetest.facedir_to_right_dir(facedir)
-	return vector.cross(
-		minetest.facedir_to_top_dir(facedir),
+function pipeworks.facedir_to_right_dir(facedir)
+	return pipeworks.vector_cross(
+		pipeworks.facedir_to_top_dir(facedir),
 		minetest.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),
@@ -48,7 +49,7 @@ function directions.side_to_dir(side)
 end
 
 function directions.dir_to_side(dir)
-	local c = vector.dot(dir, vector.new(1, 2, 3)) + 4
+	local c = pipeworks.vector_dot(dir, vector.new(1, 2, 3)) + 4
 	return ({6, 2, 4, 0, 3, 1, 5})[c]
 end
 
@@ -56,7 +57,7 @@ end
 -- String functions --
 ----------------------
 
---[[function string.split(str, sep)
+--[[function pipeworks.string_split(str, sep)
 	local fields = {}
 	local index = 1
 	local expr = "([^"..sep.."])+"
@@ -67,7 +68,7 @@ end
 	return fields
 end]]
 
-function string.startswith(str, substr)
+function pipeworks.string_startswith(str, substr)
 	return str:sub(1, substr:len()) == substr
 end
 
@@ -75,7 +76,7 @@ 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
@@ -84,7 +85,7 @@ function table.contains(tbl, element)
 	return false
 end
 
-function table.extend(tbl, tbl2)
+function pipeworks.table_extend(tbl, tbl2)
 	local index = #tbl + 1
 	for _, elt in ipairs(tbl2) do
 		tbl[index] = elt
@@ -92,11 +93,11 @@ function table.extend(tbl, tbl2)
 	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 +111,12 @@ 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
+		if pipeworks.string_startswith(field, "fs_helpers_cycling:") then
 			local l = field:split(":")
 			local new_value = tonumber(l[2])
 			local meta_name = l[3]
@@ -146,7 +148,7 @@ 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
@@ -155,3 +157,134 @@ function minetest.load_position(pos)
 	local vm = minetest.get_voxel_manip()
 	vm:read_from_map(pos, pos)
 end
+
+local function delay(...)
+	local args = {...}
+	return (function() return unpack(args) end)
+end
+
+local function get_set_wrap(name, is_dynamic)
+	return (function(self)
+		return self["_" .. name]
+	end), (function(self, value)
+		if is_dynamic then
+			self["_" .. name] = type(value) == "table"
+				and table.copy(value) or value
+		end
+	end)
+end
+
+function pipeworks.create_fake_player(def, is_dynamic)
+	local wielded_item = ItemStack("")
+	if def.inventory and def.wield_list then
+		wielded_item = def.inventory:get_stack(def.wield_list, def.wield_index or 1)
+	end
+	local p = {
+		get_player_name = delay(def.name),
+		is_player = delay(true),
+		is_fake_player = true,
+
+		_formspec = def.formspec or default.gui_survival_form,
+		_hp = def.hp or 20,
+		_breath = 11,
+		_pos = def.position and table.copy(def.position) or vector.new(),
+		_properties = def.properties or { eye_height = def.eye_height or 1.47 },
+		_inventory = def.inventory,
+		_wield_index = def.wield_index or 1,
+		_wielded_item = wielded_item,
+
+		-- Model and view
+		_eye_offset1 = vector.new(),
+		_eye_offset3 = vector.new(),
+		set_eye_offset = function(self, first, third)
+			self._eye_offset1 = table.copy(first)
+			self._eye_offset3 = table.copy(third)
+		end,
+		get_eye_offset = function(self)
+			return self._eye_offset1, self._eye_offset3
+		end,
+		get_look_dir = delay(def.look_dir or {x=0, y=0, z=1}),
+		get_look_pitch = delay(def.look_pitch or 0),
+		get_look_yaw = delay(def.look_yaw or 0),
+		get_look_horizontal = delay(def.look_yaw or 0),
+		get_look_vertical = delay(-(def.look_pitch or 0)),
+		set_animation = delay(),
+
+		-- Controls
+		get_player_control = delay({
+			jump=false, right=false, left=false, LMB=false, RMB=false,
+			sneak=def.sneak, aux1=false, down=false, up=false
+		}),
+		get_player_control_bits = delay(def.sneak and 64 or 0),
+
+		-- Inventory and ItemStacks
+		get_inventory = delay(def.inventory),
+		set_wielded_item = function(self, item)
+			if self._inventory and def.wield_list then
+				return self._inventory:set_stack(def.wield_list,
+					self._wield_index, item)
+			end
+			_wielded_item = ItemStack(item)
+		end,
+		get_wielded_item = function(self, item)
+			if self._inventory and def.wield_list then
+				return self._inventory:get_stack(def.wield_list,
+					self._wield_index)
+			end
+			return ItemStack(self._wielded_item)
+		end,
+		get_wield_list = delay(def.wield_list),
+
+		punch = delay(),
+		remove = delay(),
+		right_click = delay(),
+		set_attach = delay(),
+		set_detach = delay(),
+		set_bone_position = delay(),
+		hud_change = delay(),
+	}
+	local _trash
+	-- Getter & setter functions
+	p.get_inventory_formspec, p.set_inventory_formspec
+		= get_set_wrap("formspec", is_dynamic)
+	p.get_breath, p.set_breath = get_set_wrap("breath", is_dynamic)
+	p.get_hp, p.set_hp = get_set_wrap("hp", is_dynamic)
+	p.get_pos, p.set_pos = get_set_wrap("pos", is_dynamic)
+	_trash, p.move_to = get_set_wrap("pos", is_dynamic)
+	p.get_wield_index, p.set_wield_index = get_set_wrap("wield_index", true)
+	p.get_properties, p.set_properties = get_set_wrap("properties", false)
+
+	-- Backwards compatibilty
+	p.getpos = p.get_pos
+	p.setpos = p.set_pos
+	p.moveto = p.move_to
+
+	-- TODO "implement" all these
+	-- set_armor_groups
+	-- get_armor_groups
+	-- get_animation
+	-- get_bone_position
+	-- get_player_velocity
+	-- set_look_pitch
+	-- set_look_yaw
+	-- set_physics_override
+	-- get_physics_override
+	-- hud_add
+	-- hud_remove
+	-- hud_get
+	-- hud_set_flags
+	-- hud_get_flags
+	-- hud_set_hotbar_itemcount
+	-- hud_get_hotbar_itemcount
+	-- hud_set_hotbar_image
+	-- hud_get_hotbar_image
+	-- hud_set_hotbar_selected_image
+	-- hud_get_hotbar_selected_image
+	-- hud_replace_builtin
+	-- set_sky
+	-- get_sky
+	-- override_day_night_ratio
+	-- get_day_night_ratio
+	-- set_local_animation
+	return p
+end

compat-chests.lua

@@ -0,0 +1,245 @@
+-- this bit of code modifies the default chests and furnaces to be compatible
+-- with pipeworks.
+--
+-- the formspecs found here are basically copies of the ones from minetest_game
+-- plus bits from pipeworks' sorting tubes
+
+-- Pipeworks Specific
+local fs_helpers = pipeworks.fs_helpers
+local tube_entry = "^pipeworks_tube_connection_wooden.png"
+
+-- Chest Locals
+local open_chests = {}
+
+local function get_chest_formspec(pos)
+	local spos = pos.x .. "," .. pos.y .. "," .. pos.z
+	local formspec =
+		"size[8,9]" ..
+		default.gui_bg ..
+		default.gui_bg_img ..
+		default.gui_slots ..
+		"list[nodemeta:" .. spos .. ";main;0,0.3;8,4;]" ..
+		"list[current_player;main;0,4.85;8,1;]" ..
+		"list[current_player;main;0,6.08;8,3;8]" ..
+		"listring[nodemeta:" .. spos .. ";main]" ..
+		"listring[current_player;main]" ..
+		default.get_hotbar_bg(0,4.85)
+
+	-- Pipeworks Switch
+	formspec = formspec ..
+		fs_helpers.cycling_button(
+			minetest.get_meta(pos),
+			pipeworks.button_base,
+			"splitstacks",
+			{
+				pipeworks.button_off,
+				pipeworks.button_on
+			}
+		)..pipeworks.button_label
+
+	return formspec
+end
+
+local function chest_lid_obstructed(pos)
+	local above = { x = pos.x, y = pos.y + 1, z = pos.z }
+	local def = minetest.registered_nodes[minetest.get_node(above).name]
+	-- allow ladders, signs, wallmounted things and torches to not obstruct
+	if not def then return true end
+	if def.drawtype == "airlike" or
+			def.drawtype == "signlike" or
+			def.drawtype == "torchlike" or
+			(def.drawtype == "nodebox" and def.paramtype2 == "wallmounted") then
+		return false
+	end
+	return true
+end
+
+minetest.register_on_player_receive_fields(function(player, formname, fields)
+	if formname == "pipeworks:chest_formspec" and player then
+		local pn = player:get_player_name()
+		if open_chests[pn] then
+			local pos = open_chests[pn].pos
+			if fields.quit then
+				local sound = open_chests[pn].sound
+				local swap = open_chests[pn].swap
+				local node = minetest.get_node(pos)
+
+				open_chests[pn] = nil
+				for k, v in pairs(open_chests) do
+					if v.pos.x == pos.x and v.pos.y == pos.y and v.pos.z == pos.z then
+						return true
+					end
+				end
+				minetest.after(0.2, function()
+					minetest.swap_node(pos, { name = "default:" .. swap, param2 = node.param2 })
+
+					-- Pipeworks notification
+					pipeworks.after_place(pos)
+				end)
+				minetest.sound_play(sound, {gain = 0.3, pos = pos, max_hear_distance = 10})
+			end
+
+			-- Pipeworks Switch
+			if pipeworks.may_configure(pos, player) and not fields.quit then
+				fs_helpers.on_receive_fields(pos, fields)
+				minetest.show_formspec(player:get_player_name(), "pipeworks:chest_formspec", get_chest_formspec(pos))
+			end
+			return true
+		end
+	end
+end)
+
+-- Original Definitions
+local old_chest_def = table.copy(minetest.registered_items["default:chest"])
+local old_chest_open_def = table.copy(minetest.registered_items["default:chest_open"])
+local old_chest_locked_def = table.copy(minetest.registered_items["default:chest_locked"])
+local old_chest_locked_open_def = table.copy(minetest.registered_items["default:chest_locked_open"])
+
+-- Override Construction
+local override_protected, override, override_open, override_protected_open
+override_protected = {
+	tiles = {
+		"default_chest_top.png"..tube_entry,
+		"default_chest_top.png"..tube_entry,
+		"default_chest_side.png"..tube_entry,
+		"default_chest_side.png"..tube_entry,
+		"default_chest_lock.png",
+		"default_chest_inside.png"
+	},
+	after_place_node = function(pos, placer)
+		old_chest_locked_def.after_place_node(pos, placer)
+		pipeworks.after_place(pos)
+	end,
+	on_rightclick = function(pos, node, clicker, itemstack, pointed_thing)
+		if not default.can_interact_with_node(clicker, pos) then
+			return itemstack
+		end
+
+		minetest.sound_play(old_chest_locked_def.sound_open, {gain = 0.3,
+				pos = pos, max_hear_distance = 10})
+		if not chest_lid_obstructed(pos) then
+			minetest.swap_node(pos,
+					{ name = "default:" .. "chest_locked" .. "_open",
+					param2 = node.param2 })
+		end
+		minetest.after(0.2, minetest.show_formspec,
+				clicker:get_player_name(),
+				"pipeworks:chest_formspec", get_chest_formspec(pos))
+		open_chests[clicker:get_player_name()] = { pos = pos,
+				sound = old_chest_locked_def.sound_close, swap = "chest_locked" }
+	end,
+	groups = table.copy(old_chest_locked_def.groups),
+	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()
+			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 = {left = 1, right = 1, back = 1, bottom = 1, top = 1}
+	},
+	after_dig_node = pipeworks.after_dig,
+	on_rotate = pipeworks.on_rotate
+}
+override = {
+	tiles = {
+		"default_chest_top.png"..tube_entry,
+		"default_chest_top.png"..tube_entry,
+		"default_chest_side.png"..tube_entry,
+		"default_chest_side.png"..tube_entry,
+		"default_chest_front.png",
+		"default_chest_inside.png"
+	},
+	on_rightclick = function(pos, node, clicker)
+		minetest.sound_play(old_chest_def.sound_open, {gain = 0.3, pos = pos,
+				max_hear_distance = 10})
+		if not chest_lid_obstructed(pos) then
+			minetest.swap_node(pos, {
+					name = "default:" .. "chest" .. "_open",
+					param2 = node.param2 })
+		end
+		minetest.after(0.2, minetest.show_formspec,
+				clicker:get_player_name(),
+				"pipeworks:chest_formspec", get_chest_formspec(pos))
+		open_chests[clicker:get_player_name()] = { pos = pos,
+				sound = old_chest_def.sound_close, swap = "chest" }
+	end,
+	groups = table.copy(old_chest_def.groups),
+	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()
+			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 = {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_common = {
+
+}
+for k,v in pairs(override_common) do
+	override_protected[k] = v
+	override[k] = v
+end]]
+
+override_open = table.copy(override)
+override_open.groups = table.copy(old_chest_open_def.groups)
+override_open.tube = table.copy(override.tube)
+override_open.tube.connect_sides = table.copy(override.tube.connect_sides)
+override_open.tube.connect_sides.top = nil
+
+override_protected_open = table.copy(override_protected)
+override_protected_open.groups = table.copy(old_chest_locked_open_def.groups)
+override_protected_open.tube = table.copy(override_protected.tube)
+override_protected_open.tube.connect_sides = table.copy(override_protected.tube.connect_sides)
+override_protected_open.tube.connect_sides.top = nil
+
+override_protected.tiles = { -- Rearranged according to the chest registration in Minetest_Game.
+	"default_chest_top.png"..tube_entry,
+	"default_chest_top.png"..tube_entry,
+	"default_chest_side.png"..tube_entry.."^[transformFX",
+	"default_chest_side.png"..tube_entry,
+	"default_chest_side.png"..tube_entry,
+	"default_chest_lock.png",
+}
+override.tiles = {
+	"default_chest_top.png"..tube_entry,
+	"default_chest_top.png"..tube_entry,
+	"default_chest_side.png"..tube_entry.."^[transformFX",
+	"default_chest_side.png"..tube_entry,
+	"default_chest_side.png"..tube_entry,
+	"default_chest_front.png",
+}
+
+-- Add the extra groups
+for i,v in ipairs({override_protected, override, override_open, override_protected_open}) do
+	v.groups.tubedevice = 1
+	v.groups.tubedevice_receiver = 1
+end
+
+-- Override with the new modifications.
+minetest.override_item("default:chest", override)
+minetest.override_item("default:chest_open", override_open)
+minetest.override_item("default:chest_locked", override_protected)
+minetest.override_item("default:chest_locked_open", override_protected_open)
+

compat-furnaces.lua

@@ -0,0 +1,438 @@
+-- this file is basically a modified copy of
+-- minetest_game/mods/default/furnaces.lua
+
+-- translation support
+local S = minetest.get_translator("pipeworks")
+local DS = minetest.get_translator("default")
+
+local fs_helpers = pipeworks.fs_helpers
+
+tube_entry = "^pipeworks_tube_connection_stony.png"
+
+local function active_formspec(fuel_percent, item_percent, pos, meta)
+	local formspec =
+		"size[8,8.5]"..
+		default.gui_bg..
+		default.gui_bg_img..
+		default.gui_slots..
+		"list[current_name;src;2.75,0.5;1,1;]"..
+		"list[current_name;fuel;2.75,2.5;1,1;]"..
+		"image[2.75,1.5;1,1;default_furnace_fire_bg.png^[lowpart:"..
+		(100-fuel_percent)..":default_furnace_fire_fg.png]"..
+		"image[3.75,1.5;1,1;gui_furnace_arrow_bg.png^[lowpart:"..
+		(item_percent)..":gui_furnace_arrow_fg.png^[transformR270]"..
+		"list[current_name;dst;4.75,0.96;2,2;]"..
+		"list[current_player;main;0,4.25;8,1;]"..
+		"list[current_player;main;0,5.5;8,3;8]"..
+		"listring[current_name;dst]"..
+		"listring[current_player;main]"..
+		"listring[current_name;src]"..
+		"listring[current_player;main]"..
+		"listring[current_name;fuel]"..
+		"listring[current_player;main]"..
+		default.get_hotbar_bg(0, 4.25) ..
+			fs_helpers.cycling_button(
+				meta,
+				"image_button[0,3.5;1,0.6",
+				"split_material_stacks",
+				{
+					pipeworks.button_off,
+					pipeworks.button_on
+				}
+			).."label[0.9,3.51;"..S("Allow splitting incoming material (not fuel) stacks from tubes").."]"
+	return formspec
+end
+
+local function inactive_formspec(pos, meta)
+	local formspec = "size[8,8.5]"..
+	default.gui_bg..
+	default.gui_bg_img..
+	default.gui_slots..
+	"list[current_name;src;2.75,0.5;1,1;]"..
+	"list[current_name;fuel;2.75,2.5;1,1;]"..
+	"image[2.75,1.5;1,1;default_furnace_fire_bg.png]"..
+	"image[3.75,1.5;1,1;gui_furnace_arrow_bg.png^[transformR270]"..
+	"list[current_name;dst;4.75,0.96;2,2;]"..
+	"list[current_player;main;0,4.25;8,1;]"..
+	"list[current_player;main;0,5.5;8,3;8]"..
+	"listring[current_name;dst]"..
+	"listring[current_player;main]"..
+	"listring[current_name;src]"..
+	"listring[current_player;main]"..
+	"listring[current_name;fuel]"..
+	"listring[current_player;main]"..
+	default.get_hotbar_bg(0, 4.25) ..
+		fs_helpers.cycling_button(
+			meta,
+			"image_button[0,3.5;1,0.6",
+			"split_material_stacks",
+			{
+				pipeworks.button_off,
+				pipeworks.button_on
+			}
+		).."label[0.9,3.51;"..S("Allow splitting incoming material (not fuel) stacks from tubes").."]"
+	return formspec
+end
+
+--
+-- Node callback functions that are the same for active and inactive furnace
+--
+
+local function can_dig(pos, player)
+	local meta = minetest.get_meta(pos);
+	local inv = meta:get_inventory()
+	return inv:is_empty("fuel") and inv:is_empty("dst") and inv:is_empty("src")
+end
+
+local function allow_metadata_inventory_put(pos, listname, index, stack, player)
+	if minetest.is_protected(pos, player:get_player_name()) then
+		return 0
+	end
+	local meta = minetest.get_meta(pos)
+	local inv = meta:get_inventory()
+	if listname == "fuel" then
+		if minetest.get_craft_result({method="fuel", width=1, items={stack}}).time ~= 0 then
+			if inv:is_empty("src") then
+				meta:set_string("infotext", DS("Furnace is empty"))
+			end
+			return stack:get_count()
+		else
+			return 0
+		end
+	elseif listname == "src" then
+		return stack:get_count()
+	elseif listname == "dst" then
+		return 0
+	end
+end
+
+local function allow_metadata_inventory_move(pos, from_list, from_index, to_list, to_index, count, player)
+	local meta = minetest.get_meta(pos)
+	local inv = meta:get_inventory()
+	local stack = inv:get_stack(from_list, from_index)
+	return allow_metadata_inventory_put(pos, to_list, to_index, stack, player)
+end
+
+local function allow_metadata_inventory_take(pos, listname, index, stack, player)
+	if minetest.is_protected(pos, player:get_player_name()) then
+		return 0
+	end
+	return stack:get_count()
+end
+
+local function swap_node(pos, name)
+	local node = minetest.get_node(pos)
+	if node.name == name then
+		return
+	end
+	node.name = name
+	minetest.swap_node(pos, node)
+end
+
+local function furnace_node_timer(pos, elapsed)
+	--
+	-- Inizialize metadata
+	--
+	local meta = minetest.get_meta(pos)
+	local fuel_time = meta:get_float("fuel_time") or 0
+	local src_time = meta:get_float("src_time") or 0
+	local fuel_totaltime = meta:get_float("fuel_totaltime") or 0
+
+	local inv = meta:get_inventory()
+	local srclist, fuellist
+
+	local cookable, cooked
+	local fuel
+
+	local update = true
+	while update do
+		update = false
+
+		srclist = inv:get_list("src")
+		fuellist = inv:get_list("fuel")
+
+		--
+		-- Cooking
+		--
+
+		-- Check if we have cookable content
+		local aftercooked
+		cooked, aftercooked = minetest.get_craft_result({method = "cooking", width = 1, items = srclist})
+		cookable = cooked.time ~= 0
+
+		-- Check if we have enough fuel to burn
+		if fuel_time < fuel_totaltime then
+			-- The furnace is currently active and has enough fuel
+			fuel_time = fuel_time + elapsed
+			-- If there is a cookable item then check if it is ready yet
+			if cookable then
+				src_time = src_time + elapsed
+				if src_time >= cooked.time then
+					-- Place result in dst list if possible
+					if inv:room_for_item("dst", cooked.item) then
+						inv:add_item("dst", cooked.item)
+						inv:set_stack("src", 1, aftercooked.items[1])
+						src_time = src_time - cooked.time
+						update = true
+					end
+				end
+			end
+		else
+			-- Furnace ran out of fuel
+			if cookable then
+				-- We need to get new fuel
+				local afterfuel
+				fuel, afterfuel = minetest.get_craft_result({method = "fuel", width = 1, items = fuellist})
+
+				if fuel.time == 0 then
+					-- No valid fuel in fuel list
+					fuel_totaltime = 0
+					src_time = 0
+				else
+					-- Take fuel from fuel list
+					inv:set_stack("fuel", 1, afterfuel.items[1])
+					update = true
+					fuel_totaltime = fuel.time + (fuel_time - fuel_totaltime)
+					src_time = src_time + elapsed
+				end
+			else
+				-- We don't need to get new fuel since there is no cookable item
+				fuel_totaltime = 0
+				src_time = 0
+			end
+			fuel_time = 0
+		end
+
+		elapsed = 0
+	end
+
+	if fuel and fuel_totaltime > fuel.time then
+		fuel_totaltime = fuel.time
+	end
+	if srclist[1]:is_empty() then
+		src_time = 0
+	end
+
+	--
+	-- Update formspec, infotext and node
+	--
+	local formspec = inactive_formspec(pos, meta)
+	local item_state
+	local item_percent = 0
+	if cookable then
+		item_percent = math.floor(src_time / cooked.time * 100)
+		if item_percent > 100 then
+			item_state = DS("100% (output full)")
+		else
+			item_state = DS("@1%", item_percent)
+		end
+	else
+		if srclist[1]:is_empty() then
+			item_state = DS("Empty")
+		else
+			item_state = DS("Not cookable")
+		end
+	end
+
+	local fuel_state = DS("Empty")
+	local active = DS("Furnace inactive")
+	local result = false
+
+	if fuel_totaltime ~= 0 then
+		active = DS("Furnace active")
+		local fuel_percent = math.floor(fuel_time / fuel_totaltime * 100)
+		fuel_state = DS("@1%", fuel_percent)
+		formspec = active_formspec(fuel_percent, item_percent, pos, meta)
+		swap_node(pos, "default:furnace_active")
+		-- make sure timer restarts automatically
+		result = true
+	else
+		if not fuellist[1]:is_empty() then
+			fuel_state = DS("@1%", "0")
+		end
+		swap_node(pos, "default:furnace")
+		-- stop timer on the inactive furnace
+		minetest.get_node_timer(pos):stop()
+	end
+
+	local infotext = active.." "..DS("(Item: @1; Fuel: @2)", item_state, fuel_state)
+
+	--
+	-- Set meta values
+	--
+	meta:set_float("fuel_totaltime", fuel_totaltime)
+	meta:set_float("fuel_time", fuel_time)
+	meta:set_float("src_time", src_time)
+	meta:set_string("formspec", formspec)
+	meta:set_string("infotext", infotext)
+
+	return result
+end
+
+--
+-- Node definitions
+--
+
+minetest.register_node(":default:furnace", {
+	description = DS("Furnace"),
+	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 = {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
+				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, front = 1, bottom = 1, top = 1}
+	},
+	paramtype2 = "facedir",
+	legacy_facedir_simple = true,
+	is_ground_content = false,
+	sounds = default.node_sound_stone_defaults(),
+
+	can_dig = can_dig,
+
+	on_timer = furnace_node_timer,
+
+	on_construct = function(pos)
+		local meta = minetest.get_meta(pos)
+		meta:set_string("formspec", inactive_formspec(pos, meta))
+		local inv = meta:get_inventory()
+		inv:set_size('src', 1)
+		inv:set_size('fuel', 1)
+		inv:set_size('dst', 4)
+	end,
+
+	on_metadata_inventory_move = function(pos)
+		minetest.get_node_timer(pos):start(1.0)
+	end,
+	on_metadata_inventory_put = function(pos)
+		-- start timer function, it will sort out whether furnace can burn or not.
+		minetest.get_node_timer(pos):start(1.0)
+	end,
+	on_blast = function(pos)
+		local drops = {}
+		default.get_inventory_drops(pos, "src", drops)
+		default.get_inventory_drops(pos, "fuel", drops)
+		default.get_inventory_drops(pos, "dst", drops)
+		drops[#drops+1] = "default:furnace"
+		minetest.remove_node(pos)
+		return drops
+	end,
+	allow_metadata_inventory_put = allow_metadata_inventory_put,
+	allow_metadata_inventory_move = allow_metadata_inventory_move,
+	allow_metadata_inventory_take = allow_metadata_inventory_take,
+	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 formspec = inactive_formspec(pos, meta)
+		meta:set_string("formspec", formspec)
+	end,
+	after_place_node = pipeworks.after_place,
+	after_dig_node = pipeworks.after_dig,
+	on_rotate = pipeworks.on_rotate
+})
+
+minetest.register_node(":default:furnace_active", {
+	description = DS("Furnace"),
+	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 = {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
+				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, front = 1, bottom = 1, top = 1}
+	},
+	paramtype2 = "facedir",
+	light_source = 8,
+	drop = "default:furnace",
+	legacy_facedir_simple = true,
+	is_ground_content = false,
+	sounds = default.node_sound_stone_defaults(),
+	on_timer = furnace_node_timer,
+
+	can_dig = can_dig,
+
+	allow_metadata_inventory_put = allow_metadata_inventory_put,
+	allow_metadata_inventory_move = allow_metadata_inventory_move,
+	allow_metadata_inventory_take = allow_metadata_inventory_take,
+	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 formspec = active_formspec(0, 0, pos, meta)
+		meta:set_string("formspec", formspec)
+	end,
+	after_place_node = pipeworks.after_place,
+	after_dig_node = pipeworks.after_dig,
+	on_rotate = pipeworks.on_rotate
+})
+

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

@@ -9,6 +9,13 @@ minetest.register_craft( {
         },
 })
 
+minetest.register_craft( {
+        output = "pipeworks:straight_pipe_empty 3",
+        recipe = {
+                { "pipeworks:pipe_1_empty", "pipeworks:pipe_1_empty", "pipeworks:pipe_1_empty" },
+        },
+})
+
 minetest.register_craft( {
         output = "pipeworks:spigot 3",
         recipe = {
@@ -78,74 +85,3 @@ minetest.register_craft( {
 				{ "pipeworks:pipe_1_empty" }
         },
 })
-
-
--- Crafting recipes for pneumatic tubes
-
--- If homedecor is not installed, we need to register its crafting chain for
--- plastic sheeting so that pipeworks remains compatible with it.
-
-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",
-		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,
-	})
-end
-
-

decorative_tubes.lua

@@ -1,7 +1,9 @@
+local S = minetest.get_translator("pipeworks")
+
 local straight = function(pos, node, velocity, stack) return {velocity} end
 
 minetest.register_node("pipeworks:steel_block_embedded_tube", {
-	description = "Airtight steelblock embedded tube",
+	description = S("Airtight steelblock embedded tube"),
 	tiles = {
 		"default_steel_block.png", "default_steel_block.png",
 		"default_steel_block.png", "default_steel_block.png",
@@ -24,6 +26,7 @@ minetest.register_node("pipeworks:steel_block_embedded_tube", {
 	},
 	after_place_node = pipeworks.after_place,
 	after_dig_node = pipeworks.after_dig,
+	on_rotate = pipeworks.on_rotate,
 })
 
 minetest.register_craft( {
@@ -44,7 +47,7 @@ local pane_box = {
 }
 minetest.register_node("pipeworks:steel_pane_embedded_tube", {
 	drawtype = "nodebox",
-	description = "Airtight panel embedded tube ",
+	description = S("Airtight panel embedded tube"),
 	tiles = {
 		"pipeworks_pane_embedded_tube_sides.png^[transformR90",
 		"pipeworks_pane_embedded_tube_sides.png^[transformR90",
@@ -71,6 +74,7 @@ minetest.register_node("pipeworks:steel_pane_embedded_tube", {
 	},
 	after_place_node = pipeworks.after_place,
 	after_dig_node = pipeworks.after_dig,
+	on_rotate = pipeworks.on_rotate,
 })
 
 minetest.register_craft( {

default_settings.lua

@@ -0,0 +1,72 @@
+-- Various settings
+
+local prefix = "pipeworks_"
+
+local settings = {
+	enable_pipes = 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,
+}
+
+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] = minetest.settings:get_bool(prefix..name)
+		if pipeworks[name] == nil then
+			pipeworks[name] = value
+		end
+	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

@@ -1,3 +1,89 @@
+local S = minetest.get_translator("pipeworks")
+local new_flow_logic_register = pipeworks.flowables.register
+
+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
+
+	newnode = string.gsub(node.name, "_on", "_off")
+	minetest.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 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 placer:get_player_control().sneak)
+		  and minetest.registered_nodes[node.name]
+		  and minetest.registered_nodes[node.name].on_rightclick then
+			minetest.registered_nodes[node.name].on_rightclick(pointed_thing.under, node, placer, itemstack)
+		else
+
+			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
+
+			-- 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 minetest.facedir_to_dir(undernode.param2).y ~= 0 )
+					)
+			then
+				fdir = 17
+			end
+
+			if minetest.registered_nodes[uname]
+			  and minetest.registered_nodes[uname]["buildable_to"] then
+				pos1 = under
+			end
+
+			if minetest.registered_nodes[minetest.get_node(pos1).name]
+			  and not minetest.registered_nodes[minetest.get_node(pos1).name]["buildable_to"] then return end
+
+			local placednode = string.gsub(itemstack:get_name(), "_loaded", "_empty")
+			placednode = string.gsub(placednode, "_on", "_off")
+
+			minetest.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
@@ -48,16 +134,18 @@ for s in ipairs(states) do
 		dgroups = {snappy=3, pipe=1, not_in_creative_inventory=1}
 	end
 
-	minetest.register_node("pipeworks:pump_"..states[s], {
-		description = "Pump/Intake Module",
+	local pumpname = "pipeworks:pump_"..states[s]
+	minetest.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" },
 		paramtype = "light",
 		paramtype2 = "facedir",
 		groups = dgroups,
-		sounds = default.node_sound_wood_defaults(),
+		sounds = default.node_sound_metal_defaults(),
 		walkable = true,
+		pipe_connections = { top = 1 },
 		after_place_node = function(pos)
 			pipeworks.scan_for_pipe_objects(pos)
 		end,
@@ -67,103 +155,125 @@ 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}) 
+				minetest.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}) 
+				minetest.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
+			minetest.swap_node(pos, { name = "pipeworks:pump_"..states[3-s], param2 = fdir })
+		end,
+		on_rotate = screwdriver.rotate_simple
 	})
 
-	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"
+	minetest.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 }
+			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 }
+			fixed = { -5/16, -4/16, -8/16, 5/16, 5/16, 8/16 }
 		},
 		groups = dgroups,
-		sounds = default.node_sound_wood_defaults(),
+		sounds = default.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",
 		mesecons = {effector = {
 			action_on = function (pos, node)
-				minetest.add_node(pos,{name="pipeworks:valve_on_empty", param2 = node.param2}) 
+				minetest.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}) 
+				minetest.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
+			minetest.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
 
-minetest.register_node("pipeworks:valve_on_loaded", {
-	description = "Valve",
+local nodename_valve_loaded = "pipeworks:valve_on_loaded"
+minetest.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 }
+		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 }
+		fixed = { -5/16, -4/16, -8/16, 5/16, 5/16, 8/16 }
 	},
 	groups = {snappy=3, pipe=1, not_in_creative_inventory=1},
-	sounds = default.node_sound_wood_defaults(),
+	sounds = default.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",
 	mesecons = {effector = {
 		action_on = function (pos, node)
-			minetest.add_node(pos,{name="pipeworks:valve_on_empty", param2 = node.param2}) 
+			minetest.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}) 
+			minetest.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
+		minetest.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
 
+-- FIXME: should this do anything useful in the new flow logic?
 minetest.register_node("pipeworks:grating", {
-	description = "Decorative grating",
+	description = S("Decorative grating"),
 	tiles = {
 		"pipeworks_grating_top.png",
 		"pipeworks_grating_sides.png",
@@ -172,32 +282,42 @@ minetest.register_node("pipeworks:grating", {
 		"pipeworks_grating_sides.png",
 		"pipeworks_grating_sides.png"
 	},
+	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(),
+	sounds = default.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
 })
 
 -- outlet spigot
 
-minetest.register_node("pipeworks:spigot", {
-	description = "Spigot outlet",
+local nodename_spigot_empty = "pipeworks:spigot"
+minetest.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(),
+	sounds = default.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,
@@ -211,13 +331,15 @@ 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"
+minetest.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",
@@ -234,9 +356,12 @@ minetest.register_node("pipeworks:spigot_pouring", {
 	paramtype = "light",
 	paramtype2 = "facedir",
 	groups = {snappy=3, pipe=1, not_in_creative_inventory=1},
-	sounds = default.node_sound_wood_defaults(),
+	sounds = default.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)
+		minetest.set_node(pos, { name = "pipeworks:spigot", param2 = minetest.get_node(pos).param2 })
 		pipeworks.scan_for_pipe_objects(pos)
 	end,
 	after_dig_node = function(pos)
@@ -251,7 +376,19 @@ 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
 })
+-- 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)
@@ -264,113 +401,65 @@ local panel_cbox = {
 	}
 }
 
-minetest.register_node("pipeworks:entry_panel_empty", {
-	description = "Airtight Pipe entry/exit",
+local nodename_panel_empty = "pipeworks:entry_panel_empty"
+minetest.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(),
+	sounds = default.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"
+minetest.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(),
+	sounds = default.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
 })
+-- 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)
 
-minetest.register_node("pipeworks:flow_sensor_empty", {
-	description = "Flow Sensor",
+
+
+local nodename_sensor_empty = "pipeworks:flow_sensor_empty"
+minetest.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(),
+	sounds = default.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,
@@ -382,34 +471,34 @@ minetest.register_node("pipeworks:flow_sensor_empty", {
 	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"
+minetest.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(),
+	sounds = default.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,
@@ -421,36 +510,45 @@ minetest.register_node("pipeworks:flow_sensor_loaded", {
 	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
 })
+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 filldesc=S("empty")
 	local sgroups = {snappy=3, pipe=1, tankfill=fill+1}
 	local image = nil
 
 	if fill ~= 0 then
-		filldesc=fill.."0% full"
+		filldesc=S("@1% full", 10*fill)
 		sgroups = {snappy=3, pipe=1, tankfill=fill+1, not_in_creative_inventory=1}
 		image = "pipeworks_storage_tank_fittings.png"
 	end
 
 	minetest.register_node("pipeworks:expansion_tank_"..fill, {
-		description = "Expansion Tank ("..filldesc..")... You hacker, you.",
+		description = S("Expansion Tank (@1)", filldesc),
 		tiles = {
 			"pipeworks_storage_tank_fittings.png",
 			"pipeworks_storage_tank_fittings.png",
@@ -463,9 +561,10 @@ for fill = 0, 10 do
 		paramtype = "light",
 		paramtype2 = "facedir",
 		groups = {snappy=3, pipe=1, tankfill=fill+1, not_in_creative_inventory=1},
-		sounds = default.node_sound_wood_defaults(),
+		sounds = default.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 +572,11 @@ 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..")",
+		description = S("Fluid Storage Tank (@1)", filldesc),
 		tiles = {
 			"pipeworks_storage_tank_fittings.png",
 			"pipeworks_storage_tank_fittings.png",
@@ -489,9 +589,10 @@ for fill = 0, 10 do
 		paramtype = "light",
 		paramtype2 = "facedir",
 		groups = sgroups,
-		sounds = default.node_sound_wood_defaults(),
+		sounds = default.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 +600,24 @@ for fill = 0, 10 do
 		after_dig_node = function(pos)
 			pipeworks.scan_for_pipe_objects(pos)
 		end,
+		on_rotate = false
 	})
 end
 
 -- fountainhead
 
-minetest.register_node("pipeworks:fountainhead", {
-	description = "Fountainhead",
+local nodename_fountain_empty = "pipeworks:fountainhead"
+minetest.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(),
+	sounds = default.node_sound_metal_defaults(),
 	walkable = true,
+	pipe_connections = { bottom = 1 },
 	after_place_node = function(pos)
 		pipeworks.scan_for_pipe_objects(pos)
 	end,
@@ -533,19 +637,23 @@ minetest.register_node("pipeworks:fountainhead", {
 		type = "fixed",
 		fixed = { -2/16, -8/16, -2/16, 2/16, 8/16, 2/16 }
 	},
+	on_rotate = false
 })
 
-minetest.register_node("pipeworks:fountainhead_pouring", {
-	description = "Fountainhead",
+local nodename_fountain_loaded = "pipeworks:fountainhead_pouring"
+minetest.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(),
+	sounds = default.node_sound_metal_defaults(),
 	walkable = true,
+	pipe_connections = { bottom = 1 },
 	after_place_node = function(pos)
+		minetest.set_node(pos, { name = "pipeworks:fountainhead", param2 = minetest.get_node(pos).param2 })
 		pipeworks.scan_for_pipe_objects(pos)
 	end,
 	after_dig_node = function(pos)
@@ -564,8 +672,73 @@ 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"
+minetest.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},
+	sounds = default.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
+})
+
+local nodename_sp_loaded = "pipeworks:straight_pipe_loaded"
+minetest.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},
+	sounds = default.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
+})
+
+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
 
 minetest.register_alias("pipeworks:valve_off_loaded", "pipeworks:valve_off_empty")
 minetest.register_alias("pipeworks:entry_panel", "pipeworks:entry_panel_empty")

filter-injector.lua

@@ -1,64 +1,264 @@
+local S = minetest.get_translator("pipeworks")
+local fs_helpers = pipeworks.fs_helpers
+
 local function delay(x)
 	return (function() return x end)
 end
 
 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;${channel}]"..
+			"field[0.3,1.5;8.0,1;channel;"..S("Channel")..";${channel}]"..
 			fs_helpers.cycling_button(meta, "button[0,2;4,1", "slotseq_mode",
-				{"Sequence slots by Priority",
-				 "Sequence slots Randomly",
-				 "Sequence slots by Rotation"})..
+				{S("Sequence slots by Priority"),
+				 S("Sequence slots Randomly"),
+				 S("Sequence slots by Rotation")})..
 			fs_helpers.cycling_button(meta, "button[4,2;4,1", "exmatch_mode",
-				{"Exact match - off",
-				 "Exact match - on "})
+				{S("Exact match - off"),
+				 S("Exact match - on")})
 	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 "})
+					{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:]"..
+			"label[0,1;"..S("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"})..
+				{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;]"
+			"list[current_player;main;0,4.5;8,4;]" ..
+			"listring[]"
 	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 function punch_filter(data, filtpos, filtnode, msg)
+	local filtmeta = minetest.get_meta(filtpos)
+	local filtinv = filtmeta:get_inventory()
+	local owner = filtmeta:get_string("owner")
+	local fakePlayer = pipeworks.create_fake_player({
+		name = owner
+	})
+	local dir = pipeworks.facedir_to_right_dir(filtnode.param2)
+	local frompos = vector.subtract(filtpos, dir)
+	local fromnode = minetest.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 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 todir = pipeworks.facedir_to_right_dir(filtnode.param2)
+	local topos = vector.add(filtpos, todir)
+	local tonode = minetest.get_node(topos)
+	local todef = minetest.registered_nodes[tonode.name]
+
+	if not todef
+	  or not (minetest.get_item_group(tonode.name, "tube") == 1
+			  or minetest.get_item_group(tonode.name, "tubedevice") == 1
+			  or minetest.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 exmatch_mode
+
+	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
+			local t_slotseq = type(slotseq)
+			if t_slotseq == "number" and slotseq >= 0 and slotseq <= 2 then
+				slotseq_mode = slotseq
+			elseif t_slotseq == "string" then
+				slotseq = string.lower(slotseq)
+				if slotseq == "priority" then
+					slotseq_mode = 0
+				elseif slotseq == "random" then
+					slotseq_mode = 1
+				elseif slotseq == "rotation" then
+					slotseq_mode = 2
+				end
+			end
+
+			local exmatch = msg.exmatch
+			local t_exmatch = type(exmatch)
+			if t_exmatch == "number" and (exmatch == 0 or exmatch == 1) then
+				exmatch_mode = exmatch
+			elseif t_exmatch == "boolean" then
+				exmatch_mode = exmatch and 1 or 0
+			end
+
+			local slotseq_index = msg.slotseq_index
+			if type(slotseq_index) == "number" then
+				-- This should allow any valid index, but I'm not completely sure what
+				-- constitutes a valid index, so I'm only allowing resetting it to 1.
+				if slotseq_index == 1 then
+					filtmeta:set_int("slotseq_index", slotseq_index)
+					set_filter_infotext(data, filtmeta)
+				end
+			end
+
+			if slotseq_mode ~= nil then
+				filtmeta:set_int("slotseq_mode", slotseq_mode)
+			end
+
+			if exmatch_mode ~= nil then
+				filtmeta:set_int("exmatch_mode", exmatch_mode)
+			end
+
+			if slotseq_mode ~= nil or exmatch_mode ~= nil then
+				set_filter_formspec(data, filtmeta)
+			end
+
+			if msg.nofire then
+				return
+			end
+
+			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 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
+						add_itemstring_filter(filter)
+					end
+				end
+			end
+		elseif t_msg == "string" then
+			add_itemstring_filter(msg)
+		end
+	else
+		for _, filterstack in ipairs(filtinv:get_list("main")) do
+			local filtername = filterstack:get_name()
+			local filtercount = filterstack:get_count()
+			if filtername ~= "" then table.insert(filters, {name = filtername, count = filtercount}) end
+		end
+	end
+	if #filters == 0 then table.insert(filters, "") end
+
+	if slotseq_mode == nil then
+		slotseq_mode = filtmeta:get_int("slotseq_mode")
+	end
+
+	if exmatch_mode == nil then
+		exmatch_mode = filtmeta:get_int("exmatch_mode")
+	end
+
+	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 = minetest.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
-			matches = stack:get_name() == filterfor.name
+				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 minetest.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
@@ -85,7 +285,7 @@ local function grabAndFire(data,slotseq_mode,exmatch_mode,filtmeta,frominv,fromi
 			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)
+				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
@@ -101,12 +301,13 @@ local function grabAndFire(data,slotseq_mode,exmatch_mode,filtmeta,frominv,fromi
 				end
 				local item
 				local count
-				if all then
+				if data.stackwise then
 					count = math.min(stack:get_count(), doRemove)
-					if filterfor.count and filterfor.count > 1 then
+					if filterfor.count and (filterfor.count > 1 or data.digiline) then
 						if exmatch_mode ~= 0 and filterfor.count > count then
-							return false
+							return false -- not enough, fail
 						else
+							-- limit quantity to filter amount
 							count = math.min(filterfor.count, count)
 						end
 					end
@@ -115,7 +316,7 @@ local function grabAndFire(data,slotseq_mode,exmatch_mode,filtmeta,frominv,fromi
 				end
 				if fromtube.remove_items then
 					-- it could be the entire stack...
-					item = fromtube.remove_items(frompos, fromnode, stack, dir, count)
+					item = fromtube.remove_items(frompos, fromnode, stack, dir, count, frominvname, spos)
 				else
 					item = stack:take_item(count)
 					frominv:set_stack(frominvname, spos, stack)
@@ -125,133 +326,17 @@ local function grabAndFire(data,slotseq_mode,exmatch_mode,filtmeta,frominv,fromi
 				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)
+				local item1 = pipeworks.tube_inject_item(pos, start_pos, dir, item, fakePlayer:get_player_name())
 				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 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 frompos = vector.subtract(filtpos, dir)
-	local fromnode = minetest.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
-	if not (fromtube and fromtube.input_inventory) then return end
-
-	local slotseq_mode
-	local exact_match
-
-	local filters = {}
-	if data.digiline then
-		local t_msg = type(msg)
-		if t_msg == "table" then
-			local slotseq = msg.slotseq
-			local t_slotseq = type(slotseq)
-			if t_slotseq == "number" and slotseq >= 0 and slotseq <= 2 then
-				slotseq_mode = slotseq
-			elseif t_slotseq == "string" then
-				slotseq = string.lower(slotseq)
-				if slotseq == "priority" then
-					slotseq_mode = 0
-				elseif slotseq == "random" then
-					slotseq_mode = 1
-				elseif slotseq == "rotation" then
-					slotseq_mode = 2
-				end
-			end
-
-			local exmatch = msg.exmatch
-			local t_exmatch = type(exmatch)
-			if t_exmatch == "number" and exmatch >= 0 and exmatch <= 1 then
-				exact_match = exmatch
-			elseif t_exmatch == "boolean" then
-				exact_match = exmatch and 1 or 0
-			end
-
-			local slotseq_index = msg.slotseq_index
-			if type(slotseq_index) == "number" then
-				-- This should allow any valid index, but I'm not completely sure what
-				-- constitutes a valid index, so I'm only allowing resetting it to 1.
-				if slotseq_index == 1 then
-					filtmeta:set_int("slotseq_index", slotseq_index)
-					set_filter_infotext(data, filtmeta)
-				end
-			end
-
-			if slotseq_mode ~= nil then
-				filtmeta:set_int("slotseq_mode", slotseq_mode)
-			end
-
-			if exact_match ~= nil then
-				filtmeta:set_int("exmatch_mode", exact_match)
-			end
-
-			if slotseq_mode ~= nil or exact_match ~= nil then
-				set_filter_formspec(data, filtmeta)
-			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})
-			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})
-						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
-					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
-		end
-	else
-		for _, filterstack in ipairs(filtinv:get_list("main")) do
-			local filtername = filterstack:get_name()
-			local filtercount = filterstack:get_count()
-			if filtername ~= "" then table.insert(filters, {name = filtername, count = filtercount}) end
-		end
-	end
-	if #filters == 0 then table.insert(filters, "") end
-
-	if slotseq_mode == nil then
-		slotseq_mode = filtmeta:get_int("slotseq_mode")
-	end
-
-	if exact_match == nil then
-		exact_match = filtmeta:get_int("exmatch_mode")
-	end
-
-	local frommeta = minetest.get_meta(frompos)
-	local frominv = frommeta:get_inventory()
-	if fromtube.before_filter then fromtube.before_filter(frompos) 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 +349,23 @@ 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",
@@ -305,13 +390,24 @@ for _, data in ipairs({
 			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 = minetest.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 = minetest.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
@@ -384,18 +480,18 @@ 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" }
+	        { "default:steel_ingot", "default:steel_ingot", "basic_materials:plastic_sheet" },
+	        { "group:stick", "default:mese_crystal", "basic_materials:plastic_sheet" },
+	        { "default:steel_ingot", "default:steel_ingot", "basic_materials:plastic_sheet" }
 	},
 })
 
 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" }
+	        { "default:steel_ingot", "default:steel_ingot", "basic_materials:plastic_sheet" },
+	        { "group:stick", "default:mese", "basic_materials:plastic_sheet" },
+	        { "default:steel_ingot", "default:steel_ingot", "basic_materials:plastic_sheet" }
 	},
 })
 
@@ -403,9 +499,70 @@ 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" }
+			{ "default:steel_ingot", "default:steel_ingot", "basic_materials:plastic_sheet" },
+			{ "group:stick", "digilines:wire_std_00000000", "basic_materials:plastic_sheet" },
+			{ "default:steel_ingot", "default:steel_ingot", "basic_materials:plastic_sheet" }
 		},
 	})
 end
+
+--[[
+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 = minetest.get_node(frompos)
+	local fromdef = minetest.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 = minetest.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
+				minetest.add_item(pos, leftover)
+			end
+		end
+	end
+	return true
+end
+minetest.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 = minetest.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
+				minetest.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 = minetest.settings:get_bool("liquid_finite")
 
 pipeworks.check_for_liquids = function(pos)
 	local coords = {
@@ -31,20 +31,34 @@ 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
 		if newnode then break end
-		local name = minetest.get_node(coords[i]).name
+		local testnode = minetest.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
 			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 minetest.facedir_to_dir(testnode.param2).x ~= 0)
+				  or ((i == 5 or i == 6) and minetest.facedir_to_dir(testnode.param2).z ~= 0)
+				  or ((i == 1 or i == 2) and minetest.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
+		end
 	end
 	if newnode then 
 		minetest.add_node(pos,{name=newnode, param2 = node.param2}) 

init.lua

@@ -3,8 +3,6 @@
 -- This mod supplies various steel pipes and plastic pneumatic tubes
 -- and devices that they can connect to.
 --
--- License: WTFPL
---
 
 pipeworks = {}
 
@@ -12,9 +10,9 @@ local DEBUG = false
 
 pipeworks.worldpath = minetest.get_worldpath()
 pipeworks.modpath = minetest.get_modpath("pipeworks")
+local S = minetest.get_translator("pipeworks")
 
-dofile(pipeworks.modpath.."/default_settings.txt")
-
+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")
@@ -22,11 +20,14 @@ if worldsettingsfile then
 	worldsettingsfile:close()
 	dofile(worldsettingspath)
 end
+if pipeworks.toggles.pipe_mode == "pressure" then
+	minetest.log("warning", "pipeworks pressure logic mode comes with caveats and differences in behaviour, you have been warned!")
+end
 
 -- Random variables
 
 pipeworks.expect_infinite_stacks = true
-if minetest.get_modpath("unified_inventory") or not minetest.setting_getbool("creative_mode") then
+if minetest.get_modpath("unified_inventory") or not minetest.settings:get_bool("creative_mode") then
 	pipeworks.expect_infinite_stacks = false
 end
 
@@ -38,9 +39,15 @@ pipeworks.rules_all = {{x=0, y=0, z=1},{x=0, y=0, z=-1},{x=1, y=0, z=0},{x=-1, y
 		{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.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}}
 
 pipeworks.liquid_texture = "default_water.png"
 
+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)
@@ -84,9 +91,22 @@ function pipeworks.replace_name(tbl,tr,name)
 	return ntbl
 end
 
+pipeworks.logger = function(msg)
+	print("[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 minetest.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")
@@ -105,13 +125,29 @@ dofile(pipeworks.modpath.."/filter-injector.lua")
 dofile(pipeworks.modpath.."/trashcan.lua")
 dofile(pipeworks.modpath.."/wielder.lua")
 
+local logicdir = "/pressure_logic/"
+
+-- 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_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_redefines then
+	dofile(pipeworks.modpath.."/compat-chests.lua")
+	dofile(pipeworks.modpath.."/compat-furnaces.lua")
+end
 if pipeworks.enable_autocrafter then dofile(pipeworks.modpath.."/autocrafter.lua") end
+if pipeworks.enable_lua_tube and
+		(minetest.get_modpath("mesecons") or minetest.get_modpath("digilines")) then
+	dofile(pipeworks.modpath.."/lua_tube.lua")
+end
 
 minetest.register_alias("pipeworks:pipe", "pipeworks:pipe_110000_empty")
 
 print("Pipeworks loaded!")
-

item_transport.lua

@@ -1,14 +1,20 @@
+local luaentity = pipeworks.luaentity
+local enable_max_limit = minetest.settings:get("pipeworks_enable_items_per_tube_limit")
+local max_tube_limit = tonumber(minetest.settings:get("pipeworks_max_items_per_tube")) or 30
+if enable_max_limit == nil then enable_max_limit = true 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)
 	-- Take item in any format
 	local stack = ItemStack(item)
 	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_velocity(velocity)
+	obj.owner = owner
 	--obj:set_color("red") -- todo: this is test-only code
 	return obj
 end
@@ -29,12 +35,108 @@ function pipeworks.notvel(tbl, vel)
 	return tbl2
 end
 
-local function go_next(pos, velocity, stack)
+local tube_item_count = {}
+
+minetest.register_globalstep(function(dtime)
+	if not luaentity.entities then
+		return
+	end
+	tube_item_count = {}
+	for id, entity in pairs(luaentity.entities) do
+		if entity.name == "pipeworks:tubed_item" then
+			local h = minetest.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.
+local crunch_tube = function(pos, cnode, cmeta)
+	if enable_max_limit then
+		local h = minetest.hash_node_position(pos)
+		local itemcount = tube_item_count[h] or 0
+		if itemcount > max_tube_limit then
+			cmeta:set_string("the_tube_was", minetest.serialize(cnode))
+			pipeworks.logger("Warning - a tube at "..minetest.pos_to_string(pos).." broke due to too many items ("..itemcount..")")
+			minetest.swap_node(pos, {name = "pipeworks:broken_tube_1"})
+			pipeworks.scan_for_tube_objects(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)
 	local next_positions = {}
 	local max_priority = 0
+	local can_go
+
+	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
+	-- 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 = 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, 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)
 	local cnode = minetest.get_node(pos)
 	local cmeta = minetest.get_meta(pos)
-	local can_go
 	local speed = math.abs(velocity.x + velocity.y + velocity.z)
 	if speed == 0 then
 		speed = 1
@@ -48,45 +150,30 @@ 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)
+
+	-- 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", {
 	initial_properties = {
 		hp_max = 1,
@@ -120,7 +207,7 @@ minetest.register_entity("pipeworks:tubed_item", {
 			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,
@@ -133,7 +220,7 @@ minetest.register_entity("pipeworks:tubed_item", {
 			return
 		end
 		local item = minetest.deserialize(staticdata)
-		pipeworks.tube_inject_item(self.object:getpos(), item.start_pos, item.velocity, item.itemstring)
+		pipeworks.tube_inject_item(self.object:get_pos(), item.start_pos, item.velocity, item.itemstring)
 		self.object:remove()
 	end,
 })
@@ -165,6 +252,12 @@ 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,
@@ -200,17 +293,15 @@ 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 +310,19 @@ 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)
+		pipeworks.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
 			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)
+				leftover = minetest.registered_nodes[node.name].tube.insert_object(self.start_pos, node, stack, vel, self.owner)
 			else
 				leftover = stack
 			end
@@ -239,28 +331,50 @@ 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
+			local found_next, new_velocity, multimode = go_next(self.start_pos, velocity, stack, self.owner) -- todo: color
+			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 = minetest.get_node(vector.round(vector.add(self.start_pos,rev_dir)))
+			local tube_present = minetest.get_item_group(rev_node.name,"tubedevice") == 1
 			if not found_next then
-				drop_pos = minetest.find_node_near(vector.add(self.start_pos, velocity), 1, "air")
-				if drop_pos then
+				if pipeworks.drop_on_routing_fail or not tube_present or
+						minetest.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.
-					minetest.add_item(drop_pos, stack)
+					local dropped_item = minetest.add_item(self.start_pos, stack)
+					if dropped_item then
+						dropped_item:set_velocity(vector.multiply(velocity, 5))
+						self:remove()
+					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
-			end
 
 			if new_velocity and not vector.equals(velocity, new_velocity) then
-				self:setpos(self.start_pos)
-				self:setvelocity(new_velocity)
+				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
 	end
@@ -276,11 +390,11 @@ if minetest.get_modpath("mesecons_mvps") then
 		end
 		for id, 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)]
 				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

@@ -1,3 +1,4 @@
+local S = minetest.get_translator("pipeworks")
 
 if not minetest.get_modpath("auto_tree_tap") and 
   minetest.get_modpath("technic") then
@@ -20,7 +21,7 @@ if not minetest.get_modpath("auto_tree_tap") and
 	})
 
 	minetest.register_node(":auto_tree_tap:off", {
-		description = "Auto-Tap",
+		description = S("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,
@@ -36,7 +37,7 @@ if not minetest.get_modpath("auto_tree_tap") and
 		end,
 		after_place_node = function (pos, placer)
 			pipeworks.scan_for_tube_objects(pos, placer)
-			local placer_pos = placer:getpos()
+			local placer_pos = placer:get_pos()
 		
 			--correct for the player's height
 			if placer:is_player() then placer_pos.y = placer_pos.y + 1.5 end

locale/pipeworks.fr.tr

@@ -0,0 +1,112 @@
+# textdomain: pipeworks
+
+# License: CC-by-SA 4.0
+# Author: Louis Royer <4259825-lroyer@users.noreply.gitlab.com>
+
+## 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
+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
+Vacuuming Pneumatic Tube Segment=Segment de tuyau pneumatique aspirant
+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/template.txt

@@ -0,0 +1,112 @@
+# textdomain: pipeworks
+
+# License: CC-by-SA 4.0
+# Author:
+
+## 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=
+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
+Vacuuming Pneumatic Tube Segment=
+Adjustable Vacuuming Pneumatic Tube Segment=
+Adjustable Vacuuming Pneumatic Tube Segment (@1m)=
+
+## wielder
+Node Breaker=
+Deployer=
+Dispenser=

lua_tube.lua

@@ -0,0 +1,882 @@
+--        ______
+--       |
+--       |
+--       |        __       ___  _   __         _  _
+-- |   | |       |  | |\ |  |  |_| |  | |  |  |_ |_|
+-- |___| |______ |__| | \|  |  | \ |__| |_ |_ |_ |\  tube
+-- |
+-- |
+--
+
+-- Reference
+-- ports = get_real_port_states(pos): gets if inputs are powered from outside
+-- newport = merge_port_states(state1, state2): just does result = state1 or state2 for every port
+-- set_port(pos, rule, state): activates/deactivates the mesecons according to the port states
+-- set_port_states(pos, ports): Applies new port states to a Luacontroller at pos
+-- run(pos): runs the code in the controller at pos
+-- reset_meta(pos, code, errmsg): performs a software-reset, installs new code and prints error messages
+-- resetn(pos): performs a hardware reset, turns off all ports
+--
+-- The Sandbox
+-- The whole code of the controller runs in a sandbox,
+-- a very restricted environment.
+-- Actually the only way to damage the server is to
+-- use too much memory from the sandbox.
+-- You can add more functions to the environment
+-- (see where local env is defined)
+-- Something nice to play is appending minetest.env to it.
+
+local BASENAME = "pipeworks:lua_tube"
+
+local rules = {
+	red    = {x = -1, y =  0, z =  0, name = "red"},
+	blue   = {x =  1, y =  0, z =  0, name = "blue"},
+	yellow = {x =  0, y = -1, z =  0, name = "yellow"},
+	green  = {x =  0, y =  1, z =  0, name = "green"},
+	black  = {x =  0, y =  0, z = -1, name = "black"},
+	white  = {x =  0, y =  0, z =  1, name = "white"},
+}
+
+local digiline_rules_luatube = {
+	{x=0,  y=0,  z=-1},
+	{x=1,  y=0,  z=0},
+	{x=-1, y=0,  z=0},
+	{x=0,  y=0,  z=1},
+	{x=1,  y=1,  z=0},
+	{x=1,  y=-1, z=0},
+	{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=0,  y=1,  z=-1},
+	{x=0,  y=-1, z=-1},
+	-- vertical connectivity
+	{x=0,  y=1,  z=0},
+	{x=0,  y=-1, z=0},
+}
+
+------------------
+-- Action stuff --
+------------------
+-- These helpers are required to set the port states of the lua_tube
+
+local function update_real_port_states(pos, rule_name, new_state)
+	local meta = minetest.get_meta(pos)
+	if rule_name == nil then
+		meta:set_int("real_portstates", 1)
+		return
+	end
+	local n = meta:get_int("real_portstates") - 1
+	local L = {}
+	for i = 1, 6 do
+		L[i] = n % 2
+		n = math.floor(n / 2)
+	end
+	--                  (0,0,-1) (0,-1,0) (-1,0,0)      (1,0,0) (0,1,0) (0,0,1)
+	local pos_to_side = {  5,        3,       1,   nil,    2,      4,      6  }
+	if rule_name.x == nil then
+		for _, rname in ipairs(rule_name) do
+			local port = pos_to_side[rname.x + (2 * rname.y) + (3 * rname.z) + 4]
+			L[port] = (newstate == "on") and 1 or 0
+		end
+	else
+		local port = pos_to_side[rule_name.x + (2 * rule_name.y) + (3 * rule_name.z) + 4]
+		L[port] = (new_state == "on") and 1 or 0
+	end
+	meta:set_int("real_portstates",
+		 1 +
+		 1 * L[1] +
+		 2 * L[2] +
+		 4 * L[3] +
+		 8 * L[4] +
+		16 * L[5] +
+		32 * L[6])
+end
+
+
+local port_names = {"red", "blue", "yellow", "green", "black", "white"}
+
+local function get_real_port_states(pos)
+	-- Determine if ports are powered (by itself or from outside)
+	local meta = minetest.get_meta(pos)
+	local L = {}
+	local n = meta:get_int("real_portstates") - 1
+	for _, name in ipairs(port_names) do
+		L[name] = ((n % 2) == 1)
+		n = math.floor(n / 2)
+	end
+	return L
+end
+
+
+local function merge_port_states(ports, vports)
+	return {
+		red    = ports.red    or vports.red,
+		blue   = ports.blue   or vports.blue,
+		yellow = ports.yellow or vports.yellow,
+		green  = ports.green  or vports.green,
+		black  = ports.black  or vports.black,
+		white  = ports.white  or vports.white,
+	}
+end
+
+local function generate_name(ports)
+	local red    = ports.red    and 1 or 0
+	local blue   = ports.blue   and 1 or 0
+	local yellow = ports.yellow and 1 or 0
+	local green  = ports.green  and 1 or 0
+	local black  = ports.black  and 1 or 0
+	local white  = ports.white  and 1 or 0
+	return BASENAME..white..black..green..yellow..blue..red
+end
+
+
+local function set_port(pos, rule, state)
+	if state then
+		mesecon.receptor_on(pos, {rule})
+	else
+		mesecon.receptor_off(pos, {rule})
+	end
+end
+
+
+local function clean_port_states(ports)
+	ports.red    = ports.red    and true or false
+	ports.blue   = ports.blue   and true or false
+	ports.yellow = ports.yellow and true or false
+	ports.green  = ports.green  and true or false
+	ports.black  = ports.black  and true or false
+	ports.white  = ports.white  and true or false
+end
+
+
+local function set_port_states(pos, ports)
+	local node = minetest.get_node(pos)
+	local name = node.name
+	clean_port_states(ports)
+	local vports = minetest.registered_nodes[name].virtual_portstates
+	local new_name = generate_name(ports)
+
+	if name ~= new_name and vports then
+		-- Problem:
+		-- We need to place the new node first so that when turning
+		-- off some port, it won't stay on because the rules indicate
+		-- there is an onstate output port there.
+		-- When turning the output off then, it will however cause feedback
+		-- so that the lua_tube will receive an "off" event by turning
+		-- its output off.
+		-- Solution / Workaround:
+		-- Remember which output was turned off and ignore next "off" event.
+		local meta = minetest.get_meta(pos)
+		local ign = minetest.deserialize(meta:get_string("ignore_offevents")) or {}
+		if ports.red    and not vports.red    and not mesecon.is_powered(pos, rules.red)    then ign.red    = true end
+		if ports.blue   and not vports.blue   and not mesecon.is_powered(pos, rules.blue)   then ign.blue   = true end
+		if ports.yellow and not vports.yellow and not mesecon.is_powered(pos, rules.yellow) then ign.yellow = true end
+		if ports.green  and not vports.green  and not mesecon.is_powered(pos, rules.green)  then ign.green  = true end
+		if ports.black  and not vports.black  and not mesecon.is_powered(pos, rules.black)  then ign.black  = true end
+		if ports.white  and not vports.white  and not mesecon.is_powered(pos, rules.white)  then ign.white  = true end
+		meta:set_string("ignore_offevents", minetest.serialize(ign))
+
+		minetest.swap_node(pos, {name = new_name, param2 = node.param2})
+
+		if ports.red    ~= vports.red    then set_port(pos, rules.red,    ports.red)    end
+		if ports.blue   ~= vports.blue   then set_port(pos, rules.blue,   ports.blue)   end
+		if ports.yellow ~= vports.yellow then set_port(pos, rules.yellow, ports.yellow) end
+		if ports.green  ~= vports.green  then set_port(pos, rules.green,  ports.green)  end
+		if ports.black  ~= vports.black  then set_port(pos, rules.black,  ports.black)  end
+		if ports.white  ~= vports.white  then set_port(pos, rules.white,  ports.white)  end
+	end
+end
+
+
+-----------------
+-- Overheating --
+-----------------
+local function burn_controller(pos)
+	local node = minetest.get_node(pos)
+	node.name = BASENAME.."_burnt"
+	minetest.swap_node(pos, node)
+	minetest.get_meta(pos):set_string("lc_memory", "");
+	-- Wait for pending operations
+	minetest.after(0.2, mesecon.receptor_off, pos, mesecon.rules.flat)
+end
+
+local function overheat(pos, meta)
+	if mesecon.do_overheat(pos) then -- If too hot
+		burn_controller(pos)
+		return true
+	end
+end
+
+------------------------
+-- Ignored off events --
+------------------------
+
+local function ignore_event(event, meta)
+	if event.type ~= "off" then return false end
+	local ignore_offevents = minetest.deserialize(meta:get_string("ignore_offevents")) or {}
+	if ignore_offevents[event.pin.name] then
+		ignore_offevents[event.pin.name] = nil
+		meta:set_string("ignore_offevents", minetest.serialize(ignore_offevents))
+		return true
+	end
+end
+
+-------------------------
+-- Parsing and running --
+-------------------------
+
+local function safe_print(param)
+	print(dump(param))
+end
+
+local function safe_date()
+	return(os.date("*t",os.time()))
+end
+
+-- string.rep(str, n) with a high value for n can be used to DoS
+-- the server. Therefore, limit max. length of generated string.
+local function safe_string_rep(str, n)
+	if #str * n > mesecon.setting("luacontroller_string_rep_max", 64000) then
+		debug.sethook() -- Clear hook
+		error("string.rep: string length overflow", 2)
+	end
+
+	return string.rep(str, n)
+end
+
+-- string.find with a pattern can be used to DoS the server.
+-- Therefore, limit string.find to patternless matching.
+local function safe_string_find(...)
+	if (select(4, ...)) ~= true then
+		debug.sethook() -- Clear hook
+		error("string.find: 'plain' (fourth parameter) must always be true in a lua controlled tube")
+	end
+
+	return string.find(...)
+end
+
+local function remove_functions(x)
+	local tp = type(x)
+	if tp == "function" then
+		return nil
+	end
+
+	-- Make sure to not serialize the same table multiple times, otherwise
+	-- writing mem.test = mem in the lua controlled tube will lead to infinite recursion
+	local seen = {}
+
+	local function rfuncs(x)
+		if seen[x] then return end
+		seen[x] = true
+		if type(x) ~= "table" then return end
+
+		for key, value in pairs(x) do
+			if type(key) == "function" or type(value) == "function" then
+				x[key] = nil
+			else
+				if type(key) == "table" then
+					rfuncs(key)
+				end
+				if type(value) == "table" then
+					rfuncs(value)
+				end
+			end
+		end
+	end
+
+	rfuncs(x)
+
+	return x
+end
+
+local function get_interrupt(pos)
+	-- iid = interrupt id
+	local function interrupt(time, iid)
+		if type(time) ~= "number" then return end
+		local luac_id = minetest.get_meta(pos):get_int("luac_id")
+		mesecon.queue:add_action(pos, "pipeworks:lc_tube_interrupt", {luac_id, iid}, time, iid, 1)
+	end
+	return interrupt
+end
+
+
+local function get_digiline_send(pos)
+	if not digiline then return end
+	return function(channel, msg)
+		-- Make sure channel is string, number or boolean
+		if (type(channel) ~= "string" and type(channel) ~= "number" and type(channel) ~= "boolean") then
+			return false
+		end
+
+		-- It is technically possible to send functions over the wire since
+		-- the high performance impact of stripping those from the data has
+		-- been decided to not be worth the added realism.
+		-- Make sure serialized version of the data is not insanely long to
+		-- prevent DoS-like attacks
+		local msg_ser = minetest.serialize(msg)
+		if #msg_ser > mesecon.setting("luacontroller_digiline_maxlen", 50000) then
+			return false
+		end
+
+		minetest.after(0, function()
+			digilines.receptor_send(pos, digiline_rules_luatube, channel, msg)
+		end)
+		return true
+	end
+end
+
+
+local safe_globals = {
+	"assert", "error", "ipairs", "next", "pairs", "select",
+	"tonumber", "tostring", "type", "unpack", "_VERSION"
+}
+
+local function create_environment(pos, mem, event)
+	-- Make sure the tube hasn't broken.
+	local vports = minetest.registered_nodes[minetest.get_node(pos).name].virtual_portstates
+	if not vports then return {} end
+
+	-- Gather variables for the environment
+	local vports_copy = {}
+	for k, v in pairs(vports) do vports_copy[k] = v end
+	local rports = get_real_port_states(pos)
+
+	-- Create new library tables on each call to prevent one Luacontroller
+	-- from breaking a library and messing up other Luacontrollers.
+	local env = {
+		pin = merge_port_states(vports, rports),
+		port = vports_copy,
+		event = event,
+		mem = mem,
+		heat = mesecon.get_heat(pos),
+		heat_max = mesecon.setting("overheat_max", 20),
+		print = safe_print,
+		interrupt = get_interrupt(pos),
+		digiline_send = get_digiline_send(pos),
+		string = {
+			byte = string.byte,
+			char = string.char,
+			format = string.format,
+			len = string.len,
+			lower = string.lower,
+			upper = string.upper,
+			rep = safe_string_rep,
+			reverse = string.reverse,
+			sub = string.sub,
+			find = safe_string_find,
+		},
+		math = {
+			abs = math.abs,
+			acos = math.acos,
+			asin = math.asin,
+			atan = math.atan,
+			atan2 = math.atan2,
+			ceil = math.ceil,
+			cos = math.cos,
+			cosh = math.cosh,
+			deg = math.deg,
+			exp = math.exp,
+			floor = math.floor,
+			fmod = math.fmod,
+			frexp = math.frexp,
+			huge = math.huge,
+			ldexp = math.ldexp,
+			log = math.log,
+			log10 = math.log10,
+			max = math.max,
+			min = math.min,
+			modf = math.modf,
+			pi = math.pi,
+			pow = math.pow,
+			rad = math.rad,
+			random = math.random,
+			sin = math.sin,
+			sinh = math.sinh,
+			sqrt = math.sqrt,
+			tan = math.tan,
+			tanh = math.tanh,
+		},
+		table = {
+			concat = table.concat,
+			insert = table.insert,
+			maxn = table.maxn,
+			remove = table.remove,
+			sort = table.sort,
+		},
+		os = {
+			clock = os.clock,
+			difftime = os.difftime,
+			time = os.time,
+			datetable = safe_date,
+		},
+	}
+	env._G = env
+
+	for _, name in pairs(safe_globals) do
+		env[name] = _G[name]
+	end
+
+	return env
+end
+
+
+local function timeout()
+	debug.sethook() -- Clear hook
+	error("Code timed out!", 2)
+end
+
+
+local function create_sandbox(code, env)
+	if code:byte(1) == 27 then
+		return nil, "Binary code prohibited."
+	end
+	local f, msg = loadstring(code)
+	if not f then return nil, msg end
+	setfenv(f, env)
+
+	-- Turn off JIT optimization for user code so that count
+	-- events are generated when adding debug hooks
+	if rawget(_G, "jit") then
+		jit.off(f, true)
+	end
+
+	return function(...)
+		-- Use instruction counter to stop execution
+		-- after luacontroller_maxevents
+		local maxevents = mesecon.setting("luacontroller_maxevents", 10000)
+		debug.sethook(timeout, "", maxevents)
+		local ok, ret = pcall(f, ...)
+		debug.sethook()  -- Clear hook
+		if not ok then error(ret, 0) end
+		return ret
+	end
+end
+
+
+local function load_memory(meta)
+	return minetest.deserialize(meta:get_string("lc_memory")) or {}
+end
+
+
+local function save_memory(pos, meta, mem)
+	local memstring = minetest.serialize(remove_functions(mem))
+	local memsize_max = mesecon.setting("luacontroller_memsize", 100000)
+
+	if (#memstring <= memsize_max) then
+		meta:set_string("lc_memory", memstring)
+	else
+		print("Error: lua_tube memory overflow. "..memsize_max.." bytes available, "
+				..#memstring.." required. Controller overheats.")
+		burn_controller(pos)
+	end
+end
+
+
+local function run(pos, event)
+	local meta = minetest.get_meta(pos)
+	if overheat(pos) then return end
+	if ignore_event(event, meta) then return end
+
+	-- Load code & mem from meta
+	local mem  = load_memory(meta)
+	local code = meta:get_string("code")
+
+	-- Create environment
+	local env = create_environment(pos, mem, event)
+
+	-- Create the sandbox and execute code
+	local f, msg = create_sandbox(code, env)
+	if not f then return false, msg end
+	local succ, msg = pcall(f)
+	if not succ then return false, msg end
+	if type(env.port) ~= "table" then
+		return false, "Ports set are invalid."
+	end
+
+	-- Actually set the ports
+	set_port_states(pos, env.port)
+
+	-- Save memory. This may burn the luacontroller if a memory overflow occurs.
+	save_memory(pos, meta, env.mem)
+
+	return succ, msg
+end
+
+mesecon.queue:add_function("pipeworks:lc_tube_interrupt", function (pos, luac_id, iid)
+	-- There is no lua_tube anymore / it has been reprogrammed / replaced / burnt
+	if (minetest.get_meta(pos):get_int("luac_id") ~= luac_id) then return end
+	if (minetest.registered_nodes[minetest.get_node(pos).name].is_burnt) then return end
+	run(pos, {type = "interrupt", iid = iid})
+end)
+
+local function reset_meta(pos, code, errmsg)
+	local meta = minetest.get_meta(pos)
+	meta:set_string("code", code)
+	code = minetest.formspec_escape(code or "")
+	errmsg = minetest.formspec_escape(tostring(errmsg or ""))
+	meta:set_string("formspec", "size[12,10]"..
+		"background[-0.2,-0.25;12.4,10.75;jeija_luac_background.png]"..
+		"textarea[0.2,0.2;12.2,9.5;code;;"..code.."]"..
+		"image_button[4.75,8.75;2.5,1;jeija_luac_runbutton.png;program;]"..
+		"image_button_exit[11.72,-0.25;0.425,0.4;jeija_close_window.png;exit;]"..
+		"label[0.1,9;"..errmsg.."]")
+	meta:set_int("luac_id", math.random(1, 65535))
+end
+
+local function reset(pos)
+	set_port_states(pos, {red = false, blue = false, yellow = false,
+		green = false, black = false, white = false})
+end
+
+
+-----------------------
+-- Node Registration --
+-----------------------
+
+local output_rules = {}
+local input_rules = {}
+
+local node_box = {
+	type = "fixed",
+	fixed = {
+		pipeworks.tube_leftstub[1],   -- tube segment against -X face
+		pipeworks.tube_rightstub[1],  -- tube segment against +X face
+		pipeworks.tube_bottomstub[1], -- tube segment against -Y face
+		pipeworks.tube_topstub[1],    -- tube segment against +Y face
+		pipeworks.tube_frontstub[1],  -- tube segment against -Z face
+		pipeworks.tube_backstub[1],   -- tube segment against +Z face
+	}
+}
+
+local selection_box = {
+	type = "fixed",
+	fixed = pipeworks.tube_selectboxes,
+}
+
+local digiline = {
+	receptor = {},
+	effector = {
+		action = function(pos, node, channel, msg)
+			run(pos, {type = "digiline", channel = channel, msg = msg})
+		end
+	},
+	wire = {
+		rules = pipeworks.digilines_rules
+	},
+}
+local function on_receive_fields(pos, form_name, fields, sender)
+	if not fields.program then
+		return
+	end
+	local name = sender:get_player_name()
+	if minetest.is_protected(pos, name) and not minetest.check_player_privs(name, {protection_bypass=true}) then
+		minetest.record_protection_violation(pos, name)
+		return
+	end
+	reset(pos)
+	reset_meta(pos, fields.code)
+	local succ, err = run(pos, {type="program"})
+	if not succ then
+		print(err)
+		reset_meta(pos, fields.code, err)
+	end
+end
+
+local function go_back(velocity)
+	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 speed = math.abs(velocity.x + velocity.y + velocity.z)
+	if speed == 0 then
+		speed = 1
+	end
+	local vel = {x = velocity.x/speed, y = velocity.y/speed, z = velocity.z/speed,speed=speed}
+	if speed >= 4.1 then
+		speed = 4
+	elseif speed >= 1.1 then
+		speed = speed - 0.1
+	else
+		speed = 1
+	end
+	vel.speed = speed
+	return pipeworks.notvel(adjlist, vel)
+end
+
+local tiles_base = {
+	"pipeworks_mese_tube_plain_4.png", "pipeworks_mese_tube_plain_3.png",
+	"pipeworks_mese_tube_plain_2.png", "pipeworks_mese_tube_plain_1.png",
+	"pipeworks_mese_tube_plain_6.png", "pipeworks_mese_tube_plain_5.png"}
+
+for red    = 0, 1 do -- 0 = off  1 = on
+for blue   = 0, 1 do
+for yellow = 0, 1 do
+for green  = 0, 1 do
+for black  = 0, 1 do
+for white  = 0, 1 do
+	local cid = tostring(white)..tostring(black)..tostring(green)..
+			tostring(yellow)..tostring(blue)..tostring(red)
+	local node_name = BASENAME..cid
+	local tiles = table.copy(tiles_base)
+	if red == 1 then
+		tiles[1] = tiles[1].."^(pipeworks_lua_tube_port_on.png^[transformR90)"
+		tiles[2] = tiles[2].."^(pipeworks_lua_tube_port_on.png^[transformR90)"
+		tiles[5] = tiles[5].."^(pipeworks_lua_tube_port_on.png^[transformR270)"
+		tiles[6] = tiles[6].."^(pipeworks_lua_tube_port_on.png^[transformR90)"
+	else
+		tiles[1] = tiles[1].."^(pipeworks_lua_tube_port_off.png^[transformR90)"
+		tiles[2] = tiles[2].."^(pipeworks_lua_tube_port_off.png^[transformR90)"
+		tiles[5] = tiles[5].."^(pipeworks_lua_tube_port_off.png^[transformR270)"
+		tiles[6] = tiles[6].."^(pipeworks_lua_tube_port_off.png^[transformR90)"
+	end
+	if blue == 1 then
+		tiles[1] = tiles[1].."^(pipeworks_lua_tube_port_on.png^[transformR270)"
+		tiles[2] = tiles[2].."^(pipeworks_lua_tube_port_on.png^[transformR270)"
+		tiles[5] = tiles[5].."^(pipeworks_lua_tube_port_on.png^[transformR90)"
+		tiles[6] = tiles[6].."^(pipeworks_lua_tube_port_on.png^[transformR270)"
+	else
+		tiles[1] = tiles[1].."^(pipeworks_lua_tube_port_off.png^[transformR270)"
+		tiles[2] = tiles[2].."^(pipeworks_lua_tube_port_off.png^[transformR270)"
+		tiles[5] = tiles[5].."^(pipeworks_lua_tube_port_off.png^[transformR90)"
+		tiles[6] = tiles[6].."^(pipeworks_lua_tube_port_off.png^[transformR270)"
+	end
+	if yellow == 1 then
+		tiles[3] = tiles[3].."^(pipeworks_lua_tube_port_on.png^[transformR180)"
+		tiles[4] = tiles[4].."^(pipeworks_lua_tube_port_on.png^[transformR180)"
+		tiles[5] = tiles[5].."^(pipeworks_lua_tube_port_on.png^[transformR180)"
+		tiles[6] = tiles[6].."^(pipeworks_lua_tube_port_on.png^[transformR180)"
+	else
+		tiles[3] = tiles[3].."^(pipeworks_lua_tube_port_off.png^[transformR180)"
+		tiles[4] = tiles[4].."^(pipeworks_lua_tube_port_off.png^[transformR180)"
+		tiles[5] = tiles[5].."^(pipeworks_lua_tube_port_off.png^[transformR180)"
+		tiles[6] = tiles[6].."^(pipeworks_lua_tube_port_off.png^[transformR180)"
+	end
+	if green == 1 then
+		tiles[3] = tiles[3].."^pipeworks_lua_tube_port_on.png"
+		tiles[4] = tiles[4].."^pipeworks_lua_tube_port_on.png"
+		tiles[5] = tiles[5].."^pipeworks_lua_tube_port_on.png"
+		tiles[6] = tiles[6].."^pipeworks_lua_tube_port_on.png"
+	else
+		tiles[3] = tiles[3].."^pipeworks_lua_tube_port_off.png"
+		tiles[4] = tiles[4].."^pipeworks_lua_tube_port_off.png"
+		tiles[5] = tiles[5].."^pipeworks_lua_tube_port_off.png"
+		tiles[6] = tiles[6].."^pipeworks_lua_tube_port_off.png"
+	end
+	if black == 1 then
+		tiles[1] = tiles[1].."^(pipeworks_lua_tube_port_on.png^[transformR180)"
+		tiles[2] = tiles[2].."^pipeworks_lua_tube_port_on.png"
+		tiles[3] = tiles[3].."^(pipeworks_lua_tube_port_on.png^[transformR90)"
+		tiles[4] = tiles[4].."^(pipeworks_lua_tube_port_on.png^[transformR270)"
+	else
+		tiles[1] = tiles[1].."^(pipeworks_lua_tube_port_off.png^[transformR180)"
+		tiles[2] = tiles[2].."^pipeworks_lua_tube_port_off.png"
+		tiles[3] = tiles[3].."^(pipeworks_lua_tube_port_off.png^[transformR90)"
+		tiles[4] = tiles[4].."^(pipeworks_lua_tube_port_off.png^[transformR270)"
+	end
+	if white == 1 then
+		tiles[1] = tiles[1].."^pipeworks_lua_tube_port_on.png"
+		tiles[2] = tiles[2].."^(pipeworks_lua_tube_port_on.png^[transformR180)"
+		tiles[3] = tiles[3].."^(pipeworks_lua_tube_port_on.png^[transformR270)"
+		tiles[4] = tiles[4].."^(pipeworks_lua_tube_port_on.png^[transformR90)"
+	else
+		tiles[1] = tiles[1].."^pipeworks_lua_tube_port_off.png"
+		tiles[2] = tiles[2].."^(pipeworks_lua_tube_port_off.png^[transformR180)"
+		tiles[3] = tiles[3].."^(pipeworks_lua_tube_port_off.png^[transformR270)"
+		tiles[4] = tiles[4].."^(pipeworks_lua_tube_port_off.png^[transformR90)"
+	end
+
+	local groups = {snappy = 3, tube = 1, tubedevice = 1, overheat = 1}
+	if red + blue + yellow + green + black + white ~= 0 then
+		groups.not_in_creative_inventory = 1
+	end
+
+	output_rules[cid] = {}
+	input_rules[cid] = {}
+	if red    == 1 then table.insert(output_rules[cid], rules.red)    end
+	if blue   == 1 then table.insert(output_rules[cid], rules.blue)   end
+	if yellow == 1 then table.insert(output_rules[cid], rules.yellow) end
+	if green  == 1 then table.insert(output_rules[cid], rules.green)  end
+	if black  == 1 then table.insert(output_rules[cid], rules.black)  end
+	if white  == 1 then table.insert(output_rules[cid], rules.white)  end
+
+	if red    == 0 then table.insert( input_rules[cid], rules.red)    end
+	if blue   == 0 then table.insert( input_rules[cid], rules.blue)   end
+	if yellow == 0 then table.insert( input_rules[cid], rules.yellow) end
+	if green  == 0 then table.insert( input_rules[cid], rules.green)  end
+	if black  == 0 then table.insert( input_rules[cid], rules.black)  end
+	if white  == 0 then table.insert( input_rules[cid], rules.white)  end
+
+	local mesecons = {
+		effector = {
+			rules = input_rules[cid],
+			action_change = function (pos, _, rule_name, new_state)
+				update_real_port_states(pos, rule_name, new_state)
+				run(pos, {type=new_state, pin=rule_name})
+			end,
+		},
+		receptor = {
+			state = mesecon.state.on,
+			rules = output_rules[cid]
+		}
+	}
+
+	minetest.register_node(node_name, {
+		description = "Lua controlled Tube",
+		drawtype = "nodebox",
+		tiles = tiles,
+		paramtype = "light",
+		groups = groups,
+		drop = BASENAME.."000000",
+		sunlight_propagates = true,
+		selection_box = selection_box,
+		node_box = node_box,
+		on_construct = reset_meta,
+		on_receive_fields = on_receive_fields,
+		sounds = default.node_sound_wood_defaults(),
+		mesecons = mesecons,
+		digiline = digiline,
+		-- Virtual portstates are the ports that
+		-- the node shows as powered up (light up).
+		virtual_portstates = {
+			red    = red    == 1,
+			blue   = blue   == 1,
+			yellow = yellow == 1,
+			green  = green  == 1,
+			black  = black  == 1,
+			white  = white  == 1,
+		},
+		after_dig_node = function(pos, node)
+			mesecon.do_cooldown(pos)
+			mesecon.receptor_off(pos, output_rules)
+			pipeworks.after_dig(pos, node)
+		end,
+		is_luacontroller = true,
+		tubelike = 1,
+		tube = {
+			connect_sides = {front = 1, back = 1, left = 1, right = 1, top = 1, bottom = 1},
+			priority = 50,
+			can_go = function(pos, node, velocity, stack)
+				local src = {name = nil}
+				-- add color of the incoming tube explicitly; referring to rules, in case they change later
+				for color, rule in pairs(rules) do
+					if (-velocity.x == rule.x and -velocity.y == rule.y and -velocity.z == rule.z) then
+						src.name = rule.name
+						break
+					end
+				end
+				local succ, msg = run(pos, {
+					type = "item",
+					pin = src,
+					itemstring = stack:to_string(),
+					item = stack:to_table(),
+					velocity = velocity,
+				})
+				if not succ or type(msg) ~= "string" then
+					return go_back(velocity)
+				end
+				local r = rules[msg]
+				return r and {r} or go_back(velocity)
+			end,
+		},
+		after_place_node = pipeworks.after_place,
+		on_blast = function(pos, intensity)
+			if not intensity or intensity > 1 + 3^0.5 then
+				minetest.remove_node(pos)
+				return {string.format("%s_%s", name, dropname)}
+			end
+			minetest.swap_node(pos, {name = "pipeworks:broken_tube_1"})
+			pipeworks.scan_for_tube_objects(pos)
+		end,
+		on_blast = function(pos, intensity)
+			if not intensity or intensity > 1 + 3^0.5 then
+				minetest.remove_node(pos)
+				return {string.format("%s_%s", name, dropname)}
+			end
+			minetest.swap_node(pos, {name = "pipeworks:broken_tube_1"})
+			pipeworks.scan_for_tube_objects(pos)
+		end,
+	})
+end
+end
+end
+end
+end
+end
+
+------------------------------------
+-- Overheated Lua controlled Tube --
+------------------------------------
+
+local tiles_burnt = table.copy(tiles_base)
+tiles_burnt[1] = tiles_burnt[1].."^(pipeworks_lua_tube_port_burnt.png^[transformR90)"
+tiles_burnt[2] = tiles_burnt[2].."^(pipeworks_lua_tube_port_burnt.png^[transformR90)"
+tiles_burnt[5] = tiles_burnt[5].."^(pipeworks_lua_tube_port_burnt.png^[transformR270)"
+tiles_burnt[6] = tiles_burnt[6].."^(pipeworks_lua_tube_port_burnt.png^[transformR90)"
+tiles_burnt[1] = tiles_burnt[1].."^(pipeworks_lua_tube_port_burnt.png^[transformR270)"
+tiles_burnt[2] = tiles_burnt[2].."^(pipeworks_lua_tube_port_burnt.png^[transformR270)"
+tiles_burnt[5] = tiles_burnt[5].."^(pipeworks_lua_tube_port_burnt.png^[transformR90)"
+tiles_burnt[6] = tiles_burnt[6].."^(pipeworks_lua_tube_port_burnt.png^[transformR270)"
+tiles_burnt[3] = tiles_burnt[3].."^(pipeworks_lua_tube_port_burnt.png^[transformR180)"
+tiles_burnt[4] = tiles_burnt[4].."^(pipeworks_lua_tube_port_burnt.png^[transformR180)"
+tiles_burnt[5] = tiles_burnt[5].."^(pipeworks_lua_tube_port_burnt.png^[transformR180)"
+tiles_burnt[6] = tiles_burnt[6].."^(pipeworks_lua_tube_port_burnt.png^[transformR180)"
+tiles_burnt[3] = tiles_burnt[3].."^pipeworks_lua_tube_port_burnt.png"
+tiles_burnt[4] = tiles_burnt[4].."^pipeworks_lua_tube_port_burnt.png"
+tiles_burnt[5] = tiles_burnt[5].."^pipeworks_lua_tube_port_burnt.png"
+tiles_burnt[6] = tiles_burnt[6].."^pipeworks_lua_tube_port_burnt.png"
+tiles_burnt[1] = tiles_burnt[1].."^(pipeworks_lua_tube_port_burnt.png^[transformR180)"
+tiles_burnt[2] = tiles_burnt[2].."^pipeworks_lua_tube_port_burnt.png"
+tiles_burnt[3] = tiles_burnt[3].."^(pipeworks_lua_tube_port_burnt.png^[transformR90)"
+tiles_burnt[4] = tiles_burnt[4].."^(pipeworks_lua_tube_port_burnt.png^[transformR270)"
+tiles_burnt[1] = tiles_burnt[1].."^pipeworks_lua_tube_port_burnt.png"
+tiles_burnt[2] = tiles_burnt[2].."^(pipeworks_lua_tube_port_burnt.png^[transformR180)"
+tiles_burnt[3] = tiles_burnt[3].."^(pipeworks_lua_tube_port_burnt.png^[transformR270)"
+tiles_burnt[4] = tiles_burnt[4].."^(pipeworks_lua_tube_port_burnt.png^[transformR90)"
+
+minetest.register_node(BASENAME .. "_burnt", {
+	drawtype = "nodebox",
+	tiles = tiles_burnt,
+	is_burnt = true,
+	paramtype = "light",
+	groups = {snappy = 3, tube = 1, tubedevice = 1, not_in_creative_inventory=1},
+	drop = BASENAME.."000000",
+	sunlight_propagates = true,
+	selection_box = selection_box,
+	node_box = node_box,
+	on_construct = reset_meta,
+	on_receive_fields = on_receive_fields,
+	sounds = default.node_sound_wood_defaults(),
+	virtual_portstates = {red = false, blue = false, yellow = false,
+		green = false, black = false, white = false},
+	mesecons = {
+		effector = {
+			rules = mesecon.rules.alldirs,
+			action_change = function(pos, _, rule_name, new_state)
+				update_real_port_states(pos, rule_name, new_state)
+			end,
+		},
+	},
+	tubelike = 1,
+	tube = {
+		connect_sides = {front = 1, back = 1, left = 1, right = 1, top = 1, bottom = 1},
+		priority = 50,
+	},
+	after_place_node = pipeworks.after_place,
+	after_dig_node = pipeworks.after_dig,
+	on_blast = function(pos, intensity)
+		if not intensity or intensity > 1 + 3^0.5 then
+			minetest.remove_node(pos)
+			return {string.format("%s_%s", name, dropname)}
+		end
+		minetest.swap_node(pos, {name = "pipeworks:broken_tube_1"})
+		pipeworks.scan_for_tube_objects(pos)
+	end,
+})
+
+------------------------
+-- Craft Registration --
+------------------------
+
+minetest.register_craft({
+	type = "shapeless",
+	output = BASENAME.."000000",
+	recipe = {"pipeworks:mese_tube_000000", "mesecons_luacontroller:luacontroller0000"},
+})

luaentity.lua

@@ -1,6 +1,7 @@
 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 = {}
 
@@ -23,12 +24,33 @@ 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
@@ -52,16 +74,12 @@ local function get_blockpos(pos)
 end
 
 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 move_entities_globalstep_part1 = function(dtime)
+	local active_block_range = tonumber(minetest.settings: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 blockpos = get_blockpos(player:get_pos())
 		local minp = vector.subtract(blockpos, active_block_range)
 		local maxp = vector.add(blockpos, active_block_range)
 
@@ -77,7 +95,6 @@ minetest.register_globalstep(function(dtime)
 	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
@@ -102,9 +119,9 @@ 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
@@ -174,43 +191,43 @@ 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)
+	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)
@@ -302,14 +319,14 @@ 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
+		if vector.distance(pos, entity:get_pos()) <= radius then
 			objects[index] = entity
 			index = index + 1
 		end
 	end
 end
 
-minetest.register_globalstep(function(dtime)
+local move_entities_globalstep_part2 = function(dtime)
 	if not luaentity.entities then
 		luaentity.entities = read_entities()
 	end
@@ -317,11 +334,11 @@ minetest.register_globalstep(function(dtime)
 		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._pos = vector.add(vector.add(
 				entity._pos,
@@ -348,4 +365,15 @@ minetest.register_globalstep(function(dtime)
 			end
 		end
 	end
+end
+
+local handle_active_blocks_timer = 0.1
+
+minetest.register_globalstep(function(dtime)
+	handle_active_blocks_timer = handle_active_blocks_timer + dtime
+	if dtime < 0.2 or handle_active_blocks_timer >= (dtime * 3) then
+		handle_active_blocks_timer = 0.1
+		move_entities_globalstep_part1(dtime)
+		move_entities_globalstep_part2(dtime)
+	end
 end)

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 = default, basic_materials, screwdriver
+optional_depends = mesecons, mesecons_mvps, digilines, signs_lib
+min_minetest_version = 5.2.0

models.lua

@@ -33,7 +33,7 @@ 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
+v -0.500000 0.500000 -0.062500
+v 0.500000 0.500000 -0.062500
+v 0.500000 -0.500000 -0.062500
+v -0.500000 -0.500000 -0.062500
+v 0.500000 0.500000 0.062500
+v 0.500000 -0.500000 0.062500
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+vn -0.3827 0.9239 0.0000
+vn -0.9239 0.3827 0.0000
+g Cylinder.000_Cylinder.000_None
+s off
+f 1/1/1 2/2/1 3/3/1 4/4/1
+f 2/5/2 5/6/2 6/7/2 3/8/2
+f 5/9/3 7/10/3 8/11/3 6/12/3
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+s 1
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+f 25/100/27 39/107/30 40/106/30 26/101/27

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
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models/pipeworks_pipe_4_lowpoly.obj

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models/pipeworks_pressure_gauge_lowpoly.obj

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models/pipeworks_pump_lowpoly.obj

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models/pipeworks_spigot_lowpoly.obj

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models/pipeworks_straight_pipe_lowpoly.obj

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models/pipeworks_valve_off_lowpoly.obj

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+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

@@ -1,10 +1,16 @@
 -- This file supplies the steel pipes
+local S = minetest.get_translator("pipeworks")
 
 local REGISTER_COMPATIBILITY = true
 
 local pipes_empty_nodenames = {}
 local pipes_full_nodenames = {}
 
+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
@@ -30,13 +36,11 @@ for index, connects in ipairs(cconnects) do
 	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 pipedesc = S("Pipe Segment").." "..dump(connects)
 
 	if #connects == 0 then
 		pgroups = {snappy = 3, tube = 1}
-		pipedesc = "Pipe segment"
-		image = "pipeworks_pipe_inv.png"
+		pipedesc = S("Pipe Segment")
 	end
 	
 	local outimg_e = { "pipeworks_pipe_plain.png" }
@@ -47,10 +51,10 @@ for index, connects in ipairs(cconnects) do
 		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", {
@@ -59,8 +63,6 @@ for index, connects in ipairs(cconnects) do
 		mesh = mesh,
 		tiles = outimg_e,
 		sunlight_propagates = true,
-		inventory_image = image,
-		wield_image = image,
 		paramtype = "light",
 		paramtype2 = "facedir",
 		selection_box = {
@@ -72,7 +74,7 @@ for index, connects in ipairs(cconnects) do
 			fixed = outsel
 		},
 		groups = pgroups,
-		sounds = default.node_sound_wood_defaults(),
+		sounds = default.node_sound_metal_defaults(),
 		walkable = true,
 		drop = "pipeworks:pipe_1_empty",
 		after_place_node = function(pos)
@@ -80,7 +82,11 @@ 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}
@@ -102,19 +108,28 @@ for index, connects in ipairs(cconnects) do
 			fixed = outsel
 		},
 		groups = pgroups,
-		sounds = default.node_sound_wood_defaults(),
+		sounds = default.node_sound_metal_defaults(),
 		walkable = true,
 		drop = "pipeworks:pipe_1_empty",
 		after_place_node = function(pos)
+			minetest.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")
+	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
 
 
@@ -126,25 +141,26 @@ if REGISTER_COMPATIBILITY then
 		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},
 		drop = "pipeworks:pipe_1_empty",
 		after_place_node = function(pos)
 			pipeworks.scan_for_pipe_objects(pos)
 		end,
+		on_rotate = false
+
 	})
 	minetest.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},
 		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
@@ -175,14 +191,31 @@ if REGISTER_COMPATIBILITY then
 	})
 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)
+
+pipeworks.pipes_full_nodenames = pipes_full_nodenames
+pipeworks.pipes_empty_nodenames = pipes_empty_nodenames
+
+if pipeworks.toggles.pipe_mode == "classic" then
 
 minetest.register_abm({
 	nodenames = pipes_empty_nodenames,
@@ -220,3 +253,6 @@ minetest.register_abm({
 	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
+		minetest.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
+		minetest.log("warning", "pipeworks pressure_logic not enabled but register.flowlogic() requested")
+	end
+end
+register.flowlogic = register_flowlogic_abm

pressure_logic/abms.lua

@@ -0,0 +1,368 @@
+-- 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 index, tpos in ipairs(coords) do
+		if total >= limit then break end
+		local name = minetest.get_node(tpos).name
+		if name == "default:water_source" then
+			minetest.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 = minetest.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))
+		minetest.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 index, offset in ipairs(candidates) do
+		local npos = vector.add(pos, offset)
+		local neighbour = minetest.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.
+
+	-- pressure handles to average over
+	local connections = {}
+	-- 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
+
+	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 = minetest.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 == "default:water_flowing")
+			if canplace then
+				minetest.swap_node(npos, {name="default: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 = minetest.get_node(npos).name
+			if (name == "default:water_source") then
+				--pipeworks.logger("neighbour_cleanup_fixed removing "..formatvec(npos))
+				minetest.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 = nil
+	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 index, 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! nodename="..nodename.." 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 = minetest.registered_nodes[node.name].mesecons
+	local mesecons_rules = pipeworks.flowables.transitions.mesecons[node.name]
+	if minetest.global_exists("mesecon") 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 index, 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

@@ -1,26 +1,80 @@
+local S = minetest.get_translator("pipeworks")
 -- the default tube and default textures
-pipeworks.register_tube("pipeworks:tube", "Pneumatic tube segment")
+pipeworks.register_tube("pipeworks:tube", S("Pneumatic tube segment"))
 minetest.register_craft( {
 	output = "pipeworks:tube_1 6",
 	recipe = {
-	        { "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" },
+	        { "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
 	        { "", "", "" },
-	        { "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" }
+	        { "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
 	},
 })
 
+local nodecolor = 0xffff3030
+
+pipeworks.register_tube("pipeworks:broken_tube", {
+	description = S("Broken Tube"),
+	plain = { { name = "pipeworks_broken_tube_plain.png", backface_culling = false, color = nodecolor } },
+	noctr = { { name = "pipeworks_broken_tube_plain.png", backface_culling = false, color = nodecolor } },
+	ends  = { { name = "pipeworks_broken_tube_end.png",   color = nodecolor } },
+	short =   { name = "pipeworks_broken_tube_short.png", color = nodecolor },
+	node_def = {
+		drop = "pipeworks:tube_1",
+		groups = {not_in_creative_inventory = 1, tubedevice_receiver = 1},
+		tube = {
+			insert_object = function(pos, node, stack, direction)
+				minetest.item_drop(stack, nil, pos)
+				return ItemStack("")
+			end,
+			can_insert = function(pos,node,stack,direction)
+				return true
+			end,
+			priority = 50,
+		},
+		on_punch = function(pos, node, puncher, pointed_thing)
+			local itemstack = puncher:get_wielded_item()
+			local wieldname = itemstack:get_name()
+			local playername = puncher:get_player_name()
+			local log_msg = playername.." struck a broken tube at "..minetest.pos_to_string(pos).."\n"
+			if   wieldname == "anvil:hammer"
+			  or wieldname == "cottages:hammer"
+			  or wieldname == "glooptest:hammer_steel"
+			  or wieldname == "glooptest:hammer_bronze"
+			  or wieldname == "glooptest:hammer_diamond"
+			  or wieldname == "glooptest:hammer_mese"
+			  or wieldname == "glooptest:hammer_alatro"
+			  or wieldname == "glooptest:hammer_arol" then
+				local meta = minetest.get_meta(pos)
+				local was_node = minetest.deserialize(meta:get_string("the_tube_was"))
+				if was_node and was_node ~= "" then
+					pipeworks.logger(log_msg.."            with "..wieldname.." to repair it.")
+					minetest.swap_node(pos, { name = was_node.name, param2 = was_node.param2 })
+					pipeworks.scan_for_tube_objects(pos)
+					itemstack:add_wear(1000)
+					puncher:set_wielded_item(itemstack)
+					return itemstack
+				else
+					pipeworks.logger(log_msg.."            but it can't be repaired.")
+				end
+			else
+				pipeworks.logger(log_msg.."            with "..wieldname.." but that tool is too weak.")
+			end
+		end
+	}
+})
+
 -- 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",
+			description = S("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,
+			plain = { { name = "pipeworks_tube_plain.png", color = nodecolor } },
+			noctr = { { name = "pipeworks_tube_noctr.png", color = nodecolor } },
+			ends  = { { name = "pipeworks_tube_end.png",   color = nodecolor } },
+			short =   { name = "pipeworks_tube_short.png", color = nodecolor },
 			node_def = {
 				tube = { priority = 150 } -- higher than tubedevices (100)
 			},
@@ -28,16 +82,16 @@ if pipeworks.enable_priority_tube then
 	minetest.register_craft( {
 		output = "pipeworks:priority_tube_1 6",
 		recipe = {
-			{ "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" },
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
 			{ "default:gold_ingot", "", "default:gold_ingot" },
-			{ "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" }
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
 		},
 	})
 end
 
 if pipeworks.enable_accelerator_tube then
 	pipeworks.register_tube("pipeworks:accelerator_tube", {
-			description = "Accelerating Pneumatic Tube Segment",
+			description = S("Accelerating Pneumatic Tube Segment"),
 			inventory_image = "pipeworks_accelerator_tube_inv.png",
 			plain = { "pipeworks_accelerator_tube_plain.png" },
 			noctr = { "pipeworks_accelerator_tube_noctr.png" },
@@ -53,16 +107,16 @@ if pipeworks.enable_accelerator_tube then
 	minetest.register_craft( {
 		output = "pipeworks:accelerator_tube_1 2",
 		recipe = {
-			{ "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" },
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
 			{ "default:mese_crystal_fragment", "default:steel_ingot", "default:mese_crystal_fragment" },
-			{ "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" }
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
 		},
 	})
 end
 
 if pipeworks.enable_crossing_tube then
 	pipeworks.register_tube("pipeworks:crossing_tube", {
-			description = "Crossing Pneumatic Tube Segment",
+			description = S("Crossing Pneumatic Tube Segment"),
 			inventory_image = "pipeworks_crossing_tube_inv.png",
 			plain = { "pipeworks_crossing_tube_plain.png" },
 			noctr = { "pipeworks_crossing_tube_noctr.png" },
@@ -84,7 +138,7 @@ end
 
 if pipeworks.enable_one_way_tube then
 	minetest.register_node("pipeworks:one_way_tube", {
-		description = "One way tube",
+		description = S("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",
@@ -100,20 +154,23 @@ if pipeworks.enable_one_way_tube then
 				return {velocity}
 			end,
 			can_insert = function(pos, node, stack, direction)
-				local dir = minetest.facedir_to_right_dir(node.param2)
+				local dir = pipeworks.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,
+		on_rotate = pipeworks.on_rotate,
+		check_for_pole = pipeworks.check_for_vert_tube,
+		check_for_horiz_pole = pipeworks.check_for_horiz_tube
 	})
 	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" }
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
+			{ "group:stick", "default:mese_crystal", "basic_materials:plastic_sheet" },
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
 		},
 	})
 end

settingtypes.txt

@@ -0,0 +1,77 @@
+#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

signal_tubes.lua

@@ -1,7 +1,8 @@
+local S = minetest.get_translator("pipeworks")
 if pipeworks.enable_detector_tube then
-	local detector_tube_step = 2 * tonumber(minetest.setting_get("dedicated_server_step"))
+	local detector_tube_step = 5 * tonumber(minetest.settings:get("dedicated_server_step"))
 	pipeworks.register_tube("pipeworks:detector_tube_on", {
-			description = "Detecting Pneumatic Tube Segment on (you hacker you)",
+			description = S("Detecting Pneumatic Tube Segment on"),
 			inventory_image = "pipeworks_detector_tube_inv.png",
 			plain = { "pipeworks_detector_tube_plain.png" },
 			node_def = {
@@ -40,7 +41,7 @@ if pipeworks.enable_detector_tube then
 			},
 	})
 	pipeworks.register_tube("pipeworks:detector_tube_off", {
-			description = "Detecting Pneumatic Tube Segment",
+			description = S("Detecting Pneumatic Tube Segment"),
 			inventory_image = "pipeworks_detector_tube_inv.png",
 			plain = { "pipeworks_detector_tube_plain.png" },
 			node_def = {
@@ -60,16 +61,17 @@ if pipeworks.enable_detector_tube then
 	minetest.register_craft( {
 		output = "pipeworks:detector_tube_off_1 2",
 		recipe = {
-			{ "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" },
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
 			{ "mesecons:mesecon", "mesecons_materials:silicon", "mesecons:mesecon" },
-			{ "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" }
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
 		},
 	})
 end
 
-if minetest.get_modpath("digilines") and pipeworks.enable_digiline_detector_tube then
+local digiline_enabled = minetest.get_modpath("digilines") ~= nil
+if digiline_enabled and pipeworks.enable_digiline_detector_tube then
 	pipeworks.register_tube("pipeworks:digiline_detector_tube", {
-			description = "Digiline Detecting Pneumatic Tube Segment",
+			description = S("Digiline Detecting Pneumatic Tube Segment"),
 			inventory_image = "pipeworks_digiline_detector_tube_inv.png",
 			plain = { "pipeworks_digiline_detector_tube_plain.png" },
 			node_def = {
@@ -78,7 +80,7 @@ if minetest.get_modpath("digilines") and pipeworks.enable_digiline_detector_tube
 
 						local setchan = meta:get_string("channel")
 
-						digiline:receptor_send(pos, digiline.rules.default, setchan, stack:to_string())
+						digiline:receptor_send(pos, digiline.rules.default, setchan, stack:to_table())
 
 						return pipeworks.notvel(pipeworks.meseadjlist, velocity)
 					end},
@@ -86,9 +88,9 @@ if minetest.get_modpath("digilines") and pipeworks.enable_digiline_detector_tube
 					local meta = minetest.get_meta(pos)
 					meta:set_string("formspec",
 						"size[8.6,2.2]"..
-						"field[0.6,0.6;8,1;channel;Channel:;${channel}]"..
+						"field[0.6,0.6;8,1;channel;"..S("Channel")..";${channel}]"..
 						"image[0.3,1.3;1,1;pipeworks_digiline_detector_tube_inv.png]"..
-						"label[1.6,1.2;Digiline Detecting Tube]"
+						"label[1.6,1.2;"..S("Digiline Detecting Tube").."]"
 					)
 				end,
 				on_receive_fields = function(pos, formname, fields, sender)
@@ -101,7 +103,10 @@ if minetest.get_modpath("digilines") and pipeworks.enable_digiline_detector_tube
 					receptor = {},
 					effector = {
 						action = function(pos,node,channel,msg) end
-					}
+					},
+					wire = {
+						rules = pipeworks.digilines_rules
+					},
 				},
 			},
 	})
@@ -109,16 +114,16 @@ if minetest.get_modpath("digilines") and pipeworks.enable_digiline_detector_tube
 	minetest.register_craft( {
 		output = "pipeworks:digiline_detector_tube_1 2",
 		recipe = {
-			{ "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" },
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
 			{ "digilines:wire_std_00000000", "mesecons_materials:silicon", "digilines:wire_std_00000000" },
-			{ "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" }
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
 		},
 	})
 end
 
 if pipeworks.enable_conductor_tube then
 	pipeworks.register_tube("pipeworks:conductor_tube_off", {
-			description = "Conducting Pneumatic Tube Segment",
+			description = S("Conducting Pneumatic Tube Segment"),
 			inventory_image = "pipeworks_conductor_tube_inv.png",
 			short = "pipeworks_conductor_tube_short.png",
 			plain = { "pipeworks_conductor_tube_plain.png" },
@@ -132,7 +137,7 @@ if pipeworks.enable_conductor_tube then
 			},
 	})
 	pipeworks.register_tube("pipeworks:conductor_tube_on", {
-			description = "Conducting Pneumatic Tube Segment on (you hacker you)",
+			description = S("Conducting Pneumatic Tube Segment on"),
 			inventory_image = "pipeworks_conductor_tube_inv.png",
 			short = "pipeworks_conductor_tube_short.png",
 			plain = { "pipeworks_conductor_tube_on_plain.png" },
@@ -148,13 +153,79 @@ if pipeworks.enable_conductor_tube then
 	})
 
 	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" }
-		},
+		type = "shapeless",
+		output = "pipeworks:conductor_tube_off_1",
+		recipe = {"pipeworks:tube_1", "mesecons:mesecon"}
 	})
 end
 
+if digiline_enabled and pipeworks.enable_digiline_conductor_tube then
+	pipeworks.register_tube("pipeworks:digiline_conductor_tube", {
+		description = S("Digiline Conducting Pneumatic Tube Segment"),
+		inventory_image = "pipeworks_tube_inv.png^pipeworks_digiline_conductor_tube_inv.png",
+		short = "pipeworks_tube_short.png^pipeworks_digiline_conductor_tube_short.png",
+		plain = {"pipeworks_tube_plain.png^pipeworks_digiline_conductor_tube_plain.png"},
+		noctr = {"pipeworks_tube_noctr.png^pipeworks_digiline_conductor_tube_noctr.png"},
+		ends = {"pipeworks_tube_end.png^pipeworks_digiline_conductor_tube_end.png"},
+		node_def = {digiline = {wire = {rules = pipeworks.digilines_rules}}},
+	})
+	minetest.register_craft({
+		type = "shapeless",
+		output = "pipeworks:digiline_conductor_tube_1",
+		recipe = {"pipeworks:tube_1", "digilines:wire_std_00000000"}
+	})
+end
 
+if digiline_enabled and pipeworks.enable_digiline_conductor_tube and
+		pipeworks.enable_conductor_tube then
+	pipeworks.register_tube("pipeworks:mesecon_and_digiline_conductor_tube_off", {
+		description = S("Mesecon and Digiline Conducting Pneumatic Tube Segment"),
+		inventory_image = "pipeworks_conductor_tube_inv.png^pipeworks_digiline_conductor_tube_inv.png",
+		short = "pipeworks_conductor_tube_short.png^pipeworks_digiline_conductor_tube_short.png",
+		plain = {"pipeworks_conductor_tube_plain.png^pipeworks_digiline_conductor_tube_plain.png"},
+		noctr = {"pipeworks_conductor_tube_noctr.png^pipeworks_digiline_conductor_tube_noctr.png"},
+		ends = {"pipeworks_conductor_tube_end.png^pipeworks_digiline_conductor_tube_end.png"},
+		node_def = {
+			digiline = {wire = {rules = pipeworks.digilines_rules}},
+			groups = {mesecon = 2},
+			mesecons = {conductor = {
+				state = "off",
+				rules = pipeworks.mesecons_rules,
+				onstate = "pipeworks:mesecon_and_digiline_conductor_tube_on_#id"
+			}},
+		},
+	})
+	pipeworks.register_tube("pipeworks:mesecon_and_digiline_conductor_tube_on", {
+		description = S("Mesecon and Digiline Conducting Pneumatic Tube Segment on"),
+		inventory_image = "pipeworks_conductor_tube_inv.png^pipeworks_digiline_conductor_tube_inv.png",
+		short = "pipeworks_conductor_tube_short.png^pipeworks_digiline_conductor_tube_short.png",
+		plain = {"pipeworks_conductor_tube_on_plain.png^pipeworks_digiline_conductor_tube_plain.png"},
+		noctr = {"pipeworks_conductor_tube_on_noctr.png^pipeworks_digiline_conductor_tube_noctr.png"},
+		ends = {"pipeworks_conductor_tube_on_end.png^pipeworks_digiline_conductor_tube_end.png"},
+		node_def = {
+			digiline = {wire = {rules = pipeworks.digilines_rules}},
+			groups = {mesecon = 2, not_in_creative_inventory = 1},
+			drop = "pipeworks:mesecon_and_digiline_conductor_tube_off_1",
+			mesecons = {conductor = {
+				state = "on",
+				rules = pipeworks.mesecons_rules,
+				offstate = "pipeworks:mesecon_and_digiline_conductor_tube_off_#id"}
+			},
+		},
+	})
+	minetest.register_craft({
+		type = "shapeless",
+		output = "pipeworks:mesecon_and_digiline_conductor_tube_off_1",
+		recipe = {"pipeworks:tube_1", "mesecons:mesecon", "digilines:wire_std_00000000"}
+	})
+	minetest.register_craft({
+		type = "shapeless",
+		output = "pipeworks:mesecon_and_digiline_conductor_tube_off_1",
+		recipe = {"pipeworks:conductor_tube_off_1", "digilines:wire_std_00000000"}
+	})
+	minetest.register_craft({
+		type = "shapeless",
+		output = "pipeworks:mesecon_and_digiline_conductor_tube_off_1",
+		recipe = {"pipeworks:digiline_conductor_tube_1", "mesecons:mesecon"}
+	})
+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

sorting_tubes.lua

@@ -1,3 +1,6 @@
+local S = minetest.get_translator("pipeworks")
+local fs_helpers = pipeworks.fs_helpers
+
 if pipeworks.enable_mese_tube then
 	local function update_formspec(pos)
 		local meta = minetest.get_meta(pos)
@@ -13,8 +16,12 @@ if pipeworks.enable_mese_tube then
 		local buttons_formspec = ""
 		for i = 0, 5 do
 			buttons_formspec = buttons_formspec .. fs_helpers.cycling_button(meta,
-				"image_button[7,"..(i)..";1,1", "l"..(i+1).."s",
-				{{text="",texture="pipeworks_button_off.png", addopts="false;false;pipeworks_button_interm.png"}, {text="",texture="pipeworks_button_on.png", addopts="false;false;pipeworks_button_interm.png"}})
+				"image_button[7,"..(i+0.2)..";1,0.6", "l"..(i+1).."s",
+				{
+					pipeworks.button_off,
+					pipeworks.button_on
+				}
+			)
 		end
 		meta:set_string("formspec",
 			"size[8,11]"..
@@ -31,11 +38,25 @@ if pipeworks.enable_mese_tube then
 			"image[0,4;1,1;pipeworks_blue.png]"..
 			"image[0,5;1,1;pipeworks_red.png]"..
 			buttons_formspec..
-			"list[current_player;main;0,7;8,4;]")
+			"list[current_player;main;0,7;8,4;]" ..
+			"listring[current_player;main]" ..
+			"listring[current_player;main]" ..
+			"listring[context;line1]" ..
+			"listring[current_player;main]" ..
+			"listring[context;line2]" ..
+			"listring[current_player;main]" ..
+			"listring[context;line3]" ..
+			"listring[current_player;main]" ..
+			"listring[context;line4]" ..
+			"listring[current_player;main]" ..
+			"listring[context;line5]" ..
+			"listring[current_player;main]" ..
+			"listring[context;line6]"
+			)
 	end
 
 	pipeworks.register_tube("pipeworks:mese_tube", {
-			description = "Sorting Pneumatic Tube Segment",
+			description = S("Sorting Pneumatic Tube Segment"),
 			inventory_image = "pipeworks_mese_tube_inv.png",
 			noctr = {"pipeworks_mese_tube_noctr_1.png", "pipeworks_mese_tube_noctr_2.png", "pipeworks_mese_tube_noctr_3.png",
 				"pipeworks_mese_tube_noctr_4.png", "pipeworks_mese_tube_noctr_5.png", "pipeworks_mese_tube_noctr_6.png"},
@@ -87,7 +108,7 @@ if pipeworks.enable_mese_tube then
 						inv:set_size("line"..tostring(i), 6*1)
 					end
 					update_formspec(pos)
-					meta:set_string("infotext", "Sorting pneumatic tube")
+					meta:set_string("infotext", S("Sorting pneumatic tube"))
 				end,
 				on_punch = update_formspec,
 				on_receive_fields = function(pos, formname, fields, sender)
@@ -119,8 +140,13 @@ if pipeworks.enable_mese_tube then
 					if not pipeworks.may_configure(pos, player) then return 0 end
 					update_formspec(pos) -- For old tubes
 					local inv = minetest.get_meta(pos):get_inventory()
+
+					if from_list:match("line%d") and to_list:match("line%d") then
+						return count
+					else
 						inv:set_stack(from_list, from_index, ItemStack(""))
 						return 0
+					end
 				end,
 			},
 	})
@@ -128,9 +154,9 @@ if pipeworks.enable_mese_tube then
 	minetest.register_craft( {
 		output = "pipeworks:mese_tube_000000 2",
 		recipe = {
-			{ "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" },
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
 			{ "", "default:mese_crystal", "" },
-			{ "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" }
+			{ "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
 		},
 	})
 

teleport_tube.lua

@@ -1,10 +1,11 @@
+local S = minetest.get_translator("pipeworks")
 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))
+	return string.format("%.30g", minetest.hash_node_position(pos))
 end
 
 local function save_tube_db()
@@ -50,6 +51,11 @@ local function read_tube_db()
 	return tp_tube_db
 end
 
+-- debug formatter for coordinates used below
+local fmt = function(pos)
+	return pos.x..", "..pos.y..", "..pos.z
+end
+
 -- updates or adds a tube
 local function set_tube(pos, channel, can_receive)
 	local tubes = tp_tube_db or read_tube_db()
@@ -63,6 +69,19 @@ local function set_tube(pos, channel, can_receive)
 	end
 
 	-- we haven't found any tp tube to update, so lets add it
+	-- but sanity check that the hash has not already been inserted.
+	-- if so, complain very loudly and refuse the update so the player knows something is amiss.
+	-- to catch regressions of https://github.com/minetest-mods/pipeworks/issues/166
+	local existing = tp_tube_db[hash]
+	if  existing ~= nil then
+		local e = "error"
+		minetest.log(e, "pipeworks teleport tube update refused due to position hash collision")
+		minetest.log(e, "collided hash: "..hash)
+		minetest.log(e, "tried-to-place tube: "..fmt(pos))
+		minetest.log(e, "existing tube: "..fmt(existing))
+		return
+	end
+
 	tp_tube_db[hash] = {x=pos.x,y=pos.y,z=pos.z,channel=channel,cr=can_receive}
 	save_tube_db()
 end
@@ -109,19 +128,19 @@ 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:;${channel}]"..
-			"label[7.3,0;Receive]"..
-			"image_button[7.3,0.3;1,1;pipeworks_button_" .. cr_state .. ".png;cr" .. (can_receive and 0 or 1) .. ";;;false;pipeworks_button_interm.png]"..
+			"field[0.6,0.6;7,1;channel;"..S("Channel")..";${channel}]"..
+			"label[7.3,0;"..S("Receive").."]"..
+			"image_button[7.3,0.3;1,0.6;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]" ..
+			"label[1.6,1.2;"..S("channels are public by default").."]" ..
+			"label[1.6,1.5;"..S("use <player>:<channel> for fully private channels").."]" ..
+			"label[1.6,1.8;"..S("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",
+	description = S("Teleporting Pneumatic Tube Segment"),
 	inventory_image = "pipeworks_teleport_tube_inv.png",
 	noctr = { "pipeworks_teleport_tube_noctr.png" },
 	plain = { "pipeworks_teleport_tube_plain.png" },
@@ -151,7 +170,7 @@ pipeworks.register_tube("pipeworks:teleport_tube", {
 		on_construct = function(pos)
 			local meta = minetest.get_meta(pos)
 			update_meta(meta, true)
-			meta:set_string("infotext", "unconfigured Teleportation Tube")
+			meta:set_string("infotext", S("unconfigured Teleportation Tube"))
 		end,
 		on_receive_fields = function(pos,formname,fields,sender)
 			if not fields.channel -- ignore escaping or clientside manipulation of the form
@@ -171,12 +190,14 @@ pipeworks.register_tube("pipeworks:teleport_tube", {
 				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)
+						minetest.chat_send_player(sender_name, S("Sorry, channel '@1' is reserved for exclusive use by @2",
+							new_channel, 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)
+						minetest.chat_send_player(sender_name, S("Sorry, receiving from channel '@1' is reserved for @2",
+							new_channel, name))
 						return
 					end
 				end
@@ -208,11 +229,11 @@ pipeworks.register_tube("pipeworks:teleport_tube", {
 				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))
+					meta:set_string("infotext", S("Teleportation Tube @1 on '@2'", 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")
+					meta:set_string("infotext", S("unconfigured Teleportation Tube"))
 				end
 			end
 		end,
@@ -224,9 +245,9 @@ pipeworks.register_tube("pipeworks:teleport_tube", {
 minetest.register_craft( {
 	output = "pipeworks:teleport_tube_1 2",
 	recipe = {
-	        { "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" },
+	        { "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" },
 	        { "default:desert_stone", "default:mese", "default:desert_stone" },
-	        { "homedecor:plastic_sheeting", "homedecor:plastic_sheeting", "homedecor:plastic_sheeting" }
+	        { "basic_materials:plastic_sheet", "basic_materials:plastic_sheet", "basic_materials:plastic_sheet" }
 	},
 })