Document inactive block behaviour (#447)

Add check nil var with bug from crash server.
fixes #438

README.md

@@ -22,9 +22,9 @@ OK, I want in.
 --------------
 Go get it!
 
-[DOWNLOAD IT NOW](https://github.com/Jeija/minetest-mod-mesecons/archive/master.zip)
+[DOWNLOAD IT NOW](https://github.com/minetest-mods/mesecons/archive/master.zip)
 
-Now go ahead and install it like any other Minetest mod. Don't know how? Check out [the wonderful page about it](http://wiki.minetest.com/wiki/Mods) over at the Minetest Wiki. For your convenience, here's a quick summary:
+Now go ahead and install it like any other Minetest mod. Don't know how? Check out [the wonderful page about it](https://wiki.minetest.net/Mods) over at the official Minetest Wiki. For your convenience, here's a quick summary:
 
 1. If Mesecons is still in a ZIP file, extract the folder inside to somewhere on the computer.
 2. Make sure that when you open the folder, you can directly find `README.md` in the listing. If you just see another folder, move that folder up one level and delete the old one.
@@ -43,9 +43,11 @@ Or maybe a [comprehensive reference](http://mesecons.net/items.html) is your sty
 
 An overview for the very newest of new beginners? How does [this one](http://uberi.mesecons.net/projects/MeseconsBasics/index.html) look?
 
+There is also a [wiki page](https://wiki.minetest.net/Mods/Mesecons) dedicated to this mod.
+
 Want to get more into building? Why not check out the [Mesecons Laboratory](http://uberi.mesecons.net/), a website dedicated to advanced Mesecons builders?
 
-Want to contribute to Mesecons itself? Check out the [source code](https://github.com/Jeija/minetest-mod-mesecons)!
+Want to contribute to Mesecons itself? Check out the [source code](https://github.com/minetest-mods/mesecons)!
 
 Who wrote it anyways?
 ---------------------

bower.json

@@ -0,0 +1,12 @@
+{
+    "name": "mesecons",
+    "description": "Mesecons is a mod for Minetest that implements items related to digital circuitry: wires, buttons, lights, and programmable controllers.",
+    "homepage": "http://mesecons.net",
+    "authors": "Jeija",
+    "license": "LGPL-3.0+",
+    "keywords": [
+        "mesecons",
+        "minetest",
+        "mod"
+    ]
+}

mesecons/internal.lua

@@ -548,52 +548,3 @@ function mesecon.is_powered(pos, rule)
 	if (#sourcepos == 0) then return false
 	else return sourcepos end
 end
-
---Rules rotation Functions:
-function mesecon.rotate_rules_right(rules)
-	local nr = {}
-	for i, rule in ipairs(rules) do
-		table.insert(nr, {
-			x = -rule.z,
-			y =  rule.y,
-			z =  rule.x,
-			name = rule.name})
-	end
-	return nr
-end
-
-function mesecon.rotate_rules_left(rules)
-	local nr = {}
-	for i, rule in ipairs(rules) do
-		table.insert(nr, {
-			x =  rule.z,
-			y =  rule.y,
-			z = -rule.x,
-			name = rule.name})
-	end
-	return nr
-end
-
-function mesecon.rotate_rules_down(rules)
-	local nr = {}
-	for i, rule in ipairs(rules) do
-		table.insert(nr, {
-			x = -rule.y,
-			y =  rule.x,
-			z =  rule.z,
-			name = rule.name})
-	end
-	return nr
-end
-
-function mesecon.rotate_rules_up(rules)
-	local nr = {}
-	for i, rule in ipairs(rules) do
-		table.insert(nr, {
-			x =  rule.y,
-			y = -rule.x,
-			z =  rule.z,
-			name = rule.name})
-	end
-	return nr
-end

mesecons/oldwires.lua

@@ -4,7 +4,7 @@ minetest.register_node("mesecons:mesecon_off", {
 	inventory_image = "jeija_mesecon_off.png",
 	wield_image = "jeija_mesecon_off.png",
 	paramtype = "light",
-	is_ground_content = true,
+	is_ground_content = false,
 	walkable = false,
 	selection_box = {
 		type = "fixed",
@@ -22,7 +22,7 @@ minetest.register_node("mesecons:mesecon_on", {
 	drawtype = "raillike",
 	tiles = {"jeija_mesecon_on.png", "jeija_mesecon_curved_on.png", "jeija_mesecon_t_junction_on.png", "jeija_mesecon_crossing_on.png"},
 	paramtype = "light",
-	is_ground_content = true,
+	is_ground_content = false,
 	walkable = false,
 	selection_box = {
 		type = "fixed",
@@ -30,7 +30,7 @@ minetest.register_node("mesecons:mesecon_on", {
 	},
 	groups = {dig_immediate=3, not_in_creaive_inventory=1, mesecon=1},
 	drop = "mesecons:mesecon_off 1",
-	light_source = default.LIGHT_MAX-11,
+	light_source = minetest.LIGHT_MAX-11,
 	mesecons = {conductor={
 		state = mesecon.state.on,
 		offstate = "mesecons:mesecon_off"

mesecons/presets.lua

@@ -1,8 +1,8 @@
 mesecon.rules = {}
 mesecon.state = {}
 
-mesecon.rules.default =
-{{x=0,  y=0,  z=-1},
+mesecon.rules.default = {
+	{x =  0, y =  0, z = -1},
 	{x =  1, y =  0, z =  0},
 	{x = -1, y =  0, z =  0},
 	{x =  0, y =  0, z =  1},
@@ -13,49 +13,73 @@ mesecon.rules.default =
 	{x =  0, y =  1, z =  1},
 	{x =  0, y = -1, z =  1},
 	{x =  0, y =  1, z = -1},
- {x=0,  y=-1, z=-1}}
+	{x =  0, y = -1, z = -1},
+}
 
-mesecon.rules.pplate = mesecon.mergetable(mesecon.rules.default, {{x=0, y=-2, z=0}})
+mesecon.rules.floor = mesecon.mergetable(mesecon.rules.default, {{x = 0, y = -1, z = 0}})
 
-mesecon.rules.buttonlike =
-{{x = 1,  y = 0, z = 0},
+mesecon.rules.pplate = mesecon.mergetable(mesecon.rules.floor, {{x = 0, y = -2, z = 0}})
+
+mesecon.rules.buttonlike = {
+	{x = 1,  y =  0, z =  0},
 	{x = 1,  y =  1, z =  0},
 	{x = 1,  y = -1, z =  0},
 	{x = 1,  y = -1, z =  1},
 	{x = 1,  y = -1, z = -1},
- {x = 2,  y = 0, z = 0}}
+	{x = 2,  y =  0, z =  0},
+}
 
-mesecon.rules.flat =
-{{x = 1, y = 0, z = 0},
+mesecon.rules.flat = {
+	{x =  1, y = 0, z =  0},
 	{x = -1, y = 0, z =  0},
 	{x =  0, y = 0, z =  1},
- {x = 0, y = 0, z =-1}}
+	{x =  0, y = 0, z = -1},
+}
 
-mesecon.rules.alldirs =
-{{x= 1, y= 0,  z= 0},
+mesecon.rules.alldirs = {
+	{x =  1, y =  0,  z =  0},
 	{x = -1, y =  0,  z =  0},
 	{x =  0, y =  1,  z =  0},
 	{x =  0, y = -1,  z =  0},
 	{x =  0, y =  0,  z =  1},
- {x= 0, y= 0,  z=-1}}
+	{x =  0, y =  0,  z = -1},
+}
+
+local rules_wallmounted = {
+	xp = mesecon.rotate_rules_down(mesecon.rules.floor),
+	xn = mesecon.rotate_rules_up(mesecon.rules.floor),
+	yp = mesecon.rotate_rules_up(mesecon.rotate_rules_up(mesecon.rules.floor)),
+	yn = mesecon.rules.floor,
+	zp = mesecon.rotate_rules_left(mesecon.rotate_rules_up(mesecon.rules.floor)),
+	zn = mesecon.rotate_rules_right(mesecon.rotate_rules_up(mesecon.rules.floor)),
+}
+
+local rules_buttonlike = {
+	xp = mesecon.rules.buttonlike,
+	xn = mesecon.rotate_rules_right(mesecon.rotate_rules_right(mesecon.rules.buttonlike)),
+	yp = mesecon.rotate_rules_down(mesecon.rules.buttonlike),
+	yn = mesecon.rotate_rules_up(mesecon.rules.buttonlike),
+	zp = mesecon.rotate_rules_right(mesecon.rules.buttonlike),
+	zn = mesecon.rotate_rules_left(mesecon.rules.buttonlike),
+}
+
+local function rules_from_dir(ruleset, dir)
+	if dir.x ==  1 then return ruleset.xp end
+	if dir.y ==  1 then return ruleset.yp end
+	if dir.z ==  1 then return ruleset.zp end
+	if dir.x == -1 then return ruleset.xn end
+	if dir.y == -1 then return ruleset.yn end
+	if dir.z == -1 then return ruleset.zn end
+end
+
+mesecon.rules.wallmounted_get = function(node)
+	local dir = minetest.wallmounted_to_dir(node.param2)
+	return rules_from_dir(rules_wallmounted, dir)
+end
 
 mesecon.rules.buttonlike_get = function(node)
-	local rules = mesecon.rules.buttonlike
 	local dir = minetest.facedir_to_dir(node.param2)
-	if dir.x == 1 then
-		-- No action needed
-	elseif dir.z == -1 then
-		rules=mesecon.rotate_rules_left(rules)
-	elseif dir.x == -1 then
-		rules=mesecon.rotate_rules_right(mesecon.rotate_rules_right(rules))
-	elseif dir.z == 1 then
-		rules=mesecon.rotate_rules_right(rules)
-	elseif dir.y == -1 then
-		rules=mesecon.rotate_rules_up(rules)
-	elseif dir.y == 1 then
-		rules=mesecon.rotate_rules_down(rules)
-	end
-	return rules
+	return rules_from_dir(rules_buttonlike, dir)
 end
 
 mesecon.state.on = "on"

mesecons/services.lua

@@ -21,7 +21,8 @@ mesecon.on_placenode = function(pos, node)
 			end
 			--mesecon.receptor_on (pos, mesecon.conductor_get_rules(node))
 		elseif mesecon.is_conductor_on(node) then
-			minetest.swap_node(pos, {name = mesecon.get_conductor_off(node)})
+			node.name = mesecon.get_conductor_off(node)
+			minetest.swap_node(pos, node)
 		end
 	end
 
@@ -62,34 +63,74 @@ mesecon.on_dignode = function(pos, node)
 	mesecon.execute_autoconnect_hooks_queue(pos, node)
 end
 
+function mesecon.on_blastnode(pos, intensity)
+	local node = minetest.get_node(pos)
+	minetest.remove_node(pos)
+	mesecon.on_dignode(pos, node)
+	return minetest.get_node_drops(node.name, "")
+end
+
 minetest.register_on_placenode(mesecon.on_placenode)
 minetest.register_on_dignode(mesecon.on_dignode)
 
 -- Overheating service for fast circuits
+local OVERHEAT_MAX = mesecon.setting("overheat_max", 20)
+local COOLDOWN_TIME = mesecon.setting("cooldown_time", 2.0)
+local COOLDOWN_STEP = mesecon.setting("cooldown_granularity", 0.5)
+local COOLDOWN_MULTIPLIER = OVERHEAT_MAX / COOLDOWN_TIME
+local cooldown_timer = 0.0
+local object_heat = {}
 
 -- returns true if heat is too high
-mesecon.do_overheat = function(pos)
-	local meta = minetest.get_meta(pos)
-	local heat = meta:get_int("heat") or 0
-
-	heat = heat + 1
-	meta:set_int("heat", heat)
-
-	if heat < mesecon.setting("overheat_max", 20) then
-		mesecon.queue:add_action(pos, "cooldown", {}, 1, nil, 0)
-	else
+function mesecon.do_overheat(pos)
+	local id = minetest.hash_node_position(pos)
+	local heat = (object_heat[id] or 0) + 1
+	object_heat[id] = heat
+	if heat >= OVERHEAT_MAX then
+		minetest.log("action", "Node overheats at " .. minetest.pos_to_string(pos))
+		object_heat[id] = nil
 		return true
 	end
-
 	return false
 end
 
-
-mesecon.queue:add_function("cooldown", function (pos)
-	local meta = minetest.get_meta(pos)
-	local heat = meta:get_int("heat")
-
-	if (heat > 0) then
-		meta:set_int("heat", heat - 1)
+function mesecon.do_cooldown(pos)
+	local id = minetest.hash_node_position(pos)
+	object_heat[id] = nil
 end
-end)
+
+function mesecon.get_heat(pos)
+	local id = minetest.hash_node_position(pos)
+	return object_heat[id] or 0
+end
+
+function mesecon.move_hot_nodes(moved_nodes)
+	local new_heat = {}
+	for _, n in ipairs(moved_nodes) do
+		local old_id = minetest.hash_node_position(n.oldpos)
+		local new_id = minetest.hash_node_position(n.pos)
+		new_heat[new_id] = object_heat[old_id]
+		object_heat[old_id] = nil
+	end
+	for id, heat in pairs(new_heat) do
+		object_heat[id] = heat
+	end
+end
+
+local function global_cooldown(dtime)
+	cooldown_timer = cooldown_timer + dtime
+	if cooldown_timer < COOLDOWN_STEP then
+		return -- don't overload the CPU
+	end
+	local cooldown = COOLDOWN_MULTIPLIER * cooldown_timer
+	cooldown_timer = 0
+	for id, heat in pairs(object_heat) do
+		heat = heat - cooldown
+		if heat <= 0 then
+			object_heat[id] = nil -- free some RAM
+		else
+			object_heat[id] = heat
+		end
+	end
+end
+minetest.register_globalstep(global_cooldown)

mesecons/settings.lua

@@ -1,15 +1,15 @@
 -- SETTINGS
 function mesecon.setting(setting, default)
 	if type(default) == "boolean" then
-		local read = minetest.setting_getbool("mesecon."..setting)
+		local read = minetest.settings:get_bool("mesecon."..setting)
 		if read == nil then
 			return default
 		else
 			return read
 		end
 	elseif type(default) == "string" then
-		return minetest.setting_get("mesecon."..setting) or default
+		return minetest.settings:get("mesecon."..setting) or default
 	elseif type(default) == "number" then
-		return tonumber(minetest.setting_get("mesecon."..setting) or default)
+		return tonumber(minetest.settings:get("mesecon."..setting) or default)
 	end
 end

mesecons/util.lua

@@ -6,6 +6,56 @@ function mesecon.move_node(pos, newpos)
 	minetest.get_meta(pos):from_table(meta)
 end
 
+-- Rules rotation Functions:
+function mesecon.rotate_rules_right(rules)
+	local nr = {}
+	for i, rule in ipairs(rules) do
+		table.insert(nr, {
+			x = -rule.z,
+			y =  rule.y,
+			z =  rule.x,
+			name = rule.name})
+	end
+	return nr
+end
+
+function mesecon.rotate_rules_left(rules)
+	local nr = {}
+	for i, rule in ipairs(rules) do
+		table.insert(nr, {
+			x =  rule.z,
+			y =  rule.y,
+			z = -rule.x,
+			name = rule.name})
+	end
+	return nr
+end
+
+function mesecon.rotate_rules_down(rules)
+	local nr = {}
+	for i, rule in ipairs(rules) do
+		table.insert(nr, {
+			x = -rule.y,
+			y =  rule.x,
+			z =  rule.z,
+			name = rule.name})
+	end
+	return nr
+end
+
+function mesecon.rotate_rules_up(rules)
+	local nr = {}
+	for i, rule in ipairs(rules) do
+		table.insert(nr, {
+			x =  rule.y,
+			y = -rule.x,
+			z =  rule.z,
+			name = rule.name})
+	end
+	return nr
+end
+--
+
 function mesecon.flattenrules(allrules)
 --[[
 	{
@@ -178,6 +228,7 @@ end
 
 function mesecon.register_node(name, spec_common, spec_off, spec_on)
 	spec_common.drop = spec_common.drop or name .. "_off"
+	spec_common.on_blast = spec_common.on_blast or mesecon.on_blastnode
 	spec_common.__mesecon_basename = name
 	spec_on.__mesecon_state = "on"
 	spec_off.__mesecon_state = "off"

mesecons_blinkyplant/doc/blinkyplant/description.html

@@ -1 +1,2 @@
 The blinky plants toggles between on and off state every three seconds. Can be used to make clocks. Also works after having restarted the game.
+It stops blinking in an inactive block, then starts again when the block becomes active.

mesecons_blinkyplant/init.lua

@@ -24,6 +24,7 @@ mesecon.register_node("mesecons_blinkyplant:blinky_plant", {
 	drawtype = "plantlike",
 	inventory_image = "jeija_blinky_plant_off.png",
 	paramtype = "light",
+	is_ground_content = false,
 	walkable = false,
 	sounds = default.node_sound_leaves_defaults(),
 	selection_box = {

mesecons_button/init.lua

@@ -4,13 +4,14 @@
 
 mesecon.button_turnoff = function (pos)
 	local node = minetest.get_node(pos)
-	if node.name=="mesecons_button:button_on" then --has not been dug
+	if node.name ~= "mesecons_button:button_on" then -- has been dug
+		return
+	end
 	minetest.swap_node(pos, {name = "mesecons_button:button_off", param2 = node.param2})
 	minetest.sound_play("mesecons_button_pop", {pos = pos})
 	local rules = mesecon.rules.buttonlike_get(node)
 	mesecon.receptor_off(pos, rules)
 end
-end
 
 minetest.register_node("mesecons_button:button_off", {
 	drawtype = "nodebox",
@@ -24,6 +25,7 @@ minetest.register_node("mesecons_button:button_off", {
 	},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	legacy_wallmounted = true,
 	walkable = false,
 	on_rotate = mesecon.buttonlike_onrotate,
@@ -45,13 +47,14 @@ minetest.register_node("mesecons_button:button_off", {
 		minetest.swap_node(pos, {name = "mesecons_button:button_on", param2=node.param2})
 		mesecon.receptor_on(pos, mesecon.rules.buttonlike_get(node))
 		minetest.sound_play("mesecons_button_push", {pos=pos})
-		minetest.after(1, mesecon.button_turnoff, pos)
+		minetest.get_node_timer(pos):start(1)
 	end,
 	sounds = default.node_sound_stone_defaults(),
 	mesecons = {receptor = {
 		state = mesecon.state.off,
 		rules = mesecon.rules.buttonlike_get
-	}}
+	}},
+	on_blast = mesecon.on_blastnode,
 })
 
 minetest.register_node("mesecons_button:button_on", {
@@ -66,10 +69,11 @@ minetest.register_node("mesecons_button:button_on", {
 		},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	legacy_wallmounted = true,
 	walkable = false,
 	on_rotate = false,
-	light_source = default.LIGHT_MAX-7,
+	light_source = minetest.LIGHT_MAX-7,
 	sunlight_propagates = true,
 	selection_box = {
 		type = "fixed",
@@ -89,7 +93,9 @@ minetest.register_node("mesecons_button:button_on", {
 	mesecons = {receptor = {
 		state = mesecon.state.on,
 		rules = mesecon.rules.buttonlike_get
-	}}
+	}},
+	on_timer = mesecon.button_turnoff,
+	on_blast = mesecon.on_blastnode,
 })
 
 minetest.register_craft({

mesecons_commandblock/doc/commandblock/description.html

@@ -1 +1,2 @@
 There is no crafting recipe as this should only be available for server admins. Quite similar to the Minecraft counterpart. Executes server commands.
+It works in inactive blocks.

mesecons_commandblock/init.lua

@@ -181,6 +181,7 @@ minetest.register_node("mesecons_commandblock:commandblock_off", {
 	description = "Command Block",
 	tiles = {"jeija_commandblock_off.png"},
 	inventory_image = minetest.inventorycube("jeija_commandblock_off.png"),
+	is_ground_content = false,
 	groups = {cracky=2, mesecon_effector_off=1},
 	on_construct = construct,
 	after_place_node = after_place,
@@ -189,11 +190,13 @@ minetest.register_node("mesecons_commandblock:commandblock_off", {
 	sounds = default.node_sound_stone_defaults(),
 	mesecons = {effector = {
 		action_on = commandblock_action_on
-	}}
+	}},
+	on_blast = mesecon.on_blastnode,
 })
 
 minetest.register_node("mesecons_commandblock:commandblock_on", {
 	tiles = {"jeija_commandblock_on.png"},
+	is_ground_content = false,
 	groups = {cracky=2, mesecon_effector_on=1, not_in_creative_inventory=1},
 	light_source = 10,
 	drop = "mesecons_commandblock:commandblock_off",
@@ -204,5 +207,6 @@ minetest.register_node("mesecons_commandblock:commandblock_on", {
 	sounds = default.node_sound_stone_defaults(),
 	mesecons = {effector = {
 		action_off = commandblock_action_off
-	}}
+	}},
+	on_blast = mesecon.on_blastnode,
 })

mesecons_delayer/doc/delayer/description.html

@@ -1 +1 @@
-The delayer delays the signal from the input for a determined time. The time can be set by punching the delayer. Possible delays are: 0.1 seconds, 0.3 seconds, 0.5 seconds and 1 second. You may try to use it for creating songs with the noteblock.
+The delayer delays the signal from the input for a determined time. The time can be set by punching the delayer. Possible delays are: 0.1 seconds, 0.3 seconds, 0.5 seconds and 1 second. You may try to use it for creating songs with the noteblock. It works in unloaded blocks.

mesecons_delayer/init.lua

@@ -87,7 +87,7 @@ minetest.register_node("mesecons_delayer:delayer_off_"..tostring(i), {
 	paramtype = "light",
 	paramtype2 = "facedir",
 	sunlight_propagates = true,
-	is_ground_content = true,
+	is_ground_content = false,
 	drop = 'mesecons_delayer:delayer_off_1',
 	on_punch = function (pos, node)
 		if node.name=="mesecons_delayer:delayer_off_1" then
@@ -114,7 +114,8 @@ minetest.register_node("mesecons_delayer:delayer_off_"..tostring(i), {
 			rules = delayer_get_input_rules,
 			action_on = delayer_activate
 		}
-	}
+	},
+	on_blast = mesecon.on_blastnode,
 })
 
 
@@ -142,7 +143,7 @@ minetest.register_node("mesecons_delayer:delayer_on_"..tostring(i), {
 	paramtype = "light",
 	paramtype2 = "facedir",
 	sunlight_propagates = true,
-	is_ground_content = true,
+	is_ground_content = false,
 	drop = 'mesecons_delayer:delayer_off_1',
 	on_punch = function (pos, node)
 		if node.name=="mesecons_delayer:delayer_on_1" then
@@ -157,6 +158,7 @@ minetest.register_node("mesecons_delayer:delayer_on_"..tostring(i), {
 	end,
 	delayer_time = delaytime,
 	delayer_offstate = "mesecons_delayer:delayer_off_"..tostring(i),
+	sounds = default.node_sound_stone_defaults(),
 	mesecons = {
 		receptor =
 		{
@@ -168,7 +170,8 @@ minetest.register_node("mesecons_delayer:delayer_on_"..tostring(i), {
 			rules = delayer_get_input_rules,
 			action_off = delayer_deactivate
 		}
-	}
+	},
+	on_blast = mesecon.on_blastnode,
 })
 end
 

mesecons_detector/doc/nodedetector/description.html

@@ -4,3 +4,5 @@ It can also receive digiline signals. You can either send "GET" and it will
 respond with the detected nodename or you can send any other string and it will
 set this string as the node to scan for.
 Nodenames must include the mod they reside in, so for instance default:dirt, not just dirt.
+The distance parameter specifies how many blocks are between the node detector and the node to detect.
+Automatic scanning with Mesecons output only works when the detector is in an active block, but Digilines queries always work.

mesecons_detector/doc/objectdetector/description.html

@@ -1,3 +1,5 @@
 The object detector is a receptor. It changes its state when a player approaches.
 Right-click it to set a name to scan for.
+You can also search for comma-separated lists of players where the detector gets activated if any of the names in the list are found.
 It can also receive digiline signals which are the name to scan for on the specified channel in the right-click menu.
+Automatic scanning with Mesecons output only works when the detector is in an active block, but Digilines queries always work.

mesecons_detector/init.lua

@@ -5,15 +5,18 @@ local GET_COMMAND = "GET"
 -- The radius can be specified in mesecons/settings.lua
 
 local function object_detector_make_formspec(pos)
-	minetest.get_meta(pos):set_string("formspec", "size[9,2.5]" ..
+	local meta = minetest.get_meta(pos)
+	meta:set_string("formspec", "size[9,2.5]" ..
 		"field[0.3,  0;9,2;scanname;Name of player to scan for (empty for any):;${scanname}]"..
 		"field[0.3,1.5;4,2;digiline_channel;Digiline Channel (optional):;${digiline_channel}]"..
 		"button_exit[7,0.75;2,3;;Save]")
 end
 
-local function object_detector_on_receive_fields(pos, _, fields)
+local function object_detector_on_receive_fields(pos, formname, fields, sender)
 	if not fields.scanname or not fields.digiline_channel then return end
 
+	if minetest.is_protected(pos, sender:get_player_name()) then return end
+
 	local meta = minetest.get_meta(pos)
 	meta:set_string("scanname", fields.scanname)
 	meta:set_string("digiline_channel", fields.digiline_channel)
@@ -28,14 +31,17 @@ local function object_detector_scan(pos)
 	if next(objs) == nil then return false end
 
 	local scanname = minetest.get_meta(pos):get_string("scanname")
+	local scan_for = {}
+	for _, str in pairs(string.split(scanname:gsub(" ", ""), ",")) do
+		scan_for[str] = true
+	end
+
 	local every_player = scanname == ""
 	for _, obj in pairs(objs) do
 		-- "" is returned if it is not a player; "" ~= nil; so only handle objects with foundname ~= ""
 		local foundname = obj:get_player_name()
-
 		if foundname ~= "" then
-			-- return true if scanning for any player or if specific playername was detected
-			if scanname == "" or foundname == scanname then
+			if every_player or scan_for[foundname] then
 				return true
 			end
 		end
@@ -60,6 +66,7 @@ local object_detector_digiline = {
 minetest.register_node("mesecons_detector:object_detector_off", {
 	tiles = {"default_steel_block.png", "default_steel_block.png", "jeija_object_detector_off.png", "jeija_object_detector_off.png", "jeija_object_detector_off.png", "jeija_object_detector_off.png"},
 	paramtype = "light",
+	is_ground_content = false,
 	walkable = true,
 	groups = {cracky=3},
 	description="Player Detector",
@@ -70,12 +77,14 @@ minetest.register_node("mesecons_detector:object_detector_off", {
 	on_construct = object_detector_make_formspec,
 	on_receive_fields = object_detector_on_receive_fields,
 	sounds = default.node_sound_stone_defaults(),
-	digiline = object_detector_digiline
+	digiline = object_detector_digiline,
+	on_blast = mesecon.on_blastnode,
 })
 
 minetest.register_node("mesecons_detector:object_detector_on", {
 	tiles = {"default_steel_block.png", "default_steel_block.png", "jeija_object_detector_on.png", "jeija_object_detector_on.png", "jeija_object_detector_on.png", "jeija_object_detector_on.png"},
 	paramtype = "light",
+	is_ground_content = false,
 	walkable = true,
 	groups = {cracky=3,not_in_creative_inventory=1},
 	drop = 'mesecons_detector:object_detector_off',
@@ -86,7 +95,8 @@ minetest.register_node("mesecons_detector:object_detector_on", {
 	on_construct = object_detector_make_formspec,
 	on_receive_fields = object_detector_on_receive_fields,
 	sounds = default.node_sound_stone_defaults(),
-	digiline = object_detector_digiline
+	digiline = object_detector_digiline,
+	on_blast = mesecon.on_blastnode,
 })
 
 minetest.register_craft({
@@ -98,6 +108,15 @@ minetest.register_craft({
 	}
 })
 
+minetest.register_craft({
+	output = 'mesecons_detector:object_detector_off',
+	recipe = {
+		{"default:steel_ingot", "default:steel_ingot", "default:steel_ingot"},
+		{"default:steel_ingot", "mesecons_microcontroller:microcontroller0000", "default:steel_ingot"},
+		{"default:steel_ingot", "group:mesecon_conductor_craftable", "default:steel_ingot"},
+	}
+})
+
 minetest.register_abm({
 	nodenames = {"mesecons_detector:object_detector_off"},
 	interval = 1,
@@ -128,17 +147,23 @@ minetest.register_abm({
 -- Detects the node in front of it
 
 local function node_detector_make_formspec(pos)
-	minetest.get_meta(pos):set_string("formspec", "size[9,2.5]" ..
+	local meta = minetest.get_meta(pos)
+	if meta:get_string("distance") == ""  then meta:set_string("distance", "0") end
+	meta:set_string("formspec", "size[9,2.5]" ..
 		"field[0.3,  0;9,2;scanname;Name of node to scan for (empty for any):;${scanname}]"..
-		"field[0.3,1.5;4,2;digiline_channel;Digiline Channel (optional):;${digiline_channel}]"..
+		"field[0.3,1.5;2.5,2;distance;Distance (0-"..mesecon.setting("node_detector_distance_max", 10).."):;${distance}]"..
+		"field[3,1.5;4,2;digiline_channel;Digiline Channel (optional):;${digiline_channel}]"..
 		"button_exit[7,0.75;2,3;;Save]")
 end
 
-local function node_detector_on_receive_fields(pos, _, fields)
+local function node_detector_on_receive_fields(pos, fieldname, fields, sender)
 	if not fields.scanname or not fields.digiline_channel then return end
 
+	if minetest.is_protected(pos, sender:get_player_name()) then return end
+
 	local meta = minetest.get_meta(pos)
 	meta:set_string("scanname", fields.scanname)
+	meta:set_string("distance", fields.distance or "0")
 	meta:set_string("digiline_channel", fields.digiline_channel)
 	node_detector_make_formspec(pos)
 end
@@ -148,10 +173,17 @@ local function node_detector_scan(pos)
 	local node = minetest.get_node_or_nil(pos)
 	if not node then return end
 
+	local meta = minetest.get_meta(pos)
+
+	local distance = meta:get_int("distance")
+	local distance_max = mesecon.setting("node_detector_distance_max", 10)
+	if distance < 0 then distance = 0 end
+	if distance > distance_max then distance = distance_max end
+
 	local frontname = minetest.get_node(
-		vector.subtract(pos, minetest.facedir_to_dir(node.param2))
+		vector.subtract(pos, vector.multiply(minetest.facedir_to_dir(node.param2), distance + 1))
 	).name
-	local scanname = minetest.get_meta(pos):get_string("scanname")
+	local scanname = meta:get_string("scanname")
 
 	return (frontname == scanname) or
 		(frontname ~= "air" and frontname ~= "ignore" and scanname == "")
@@ -162,11 +194,17 @@ local node_detector_digiline = {
 	effector = {
 		action = function(pos, node, channel, msg)
 			local meta = minetest.get_meta(pos)
+
+			local distance = meta:get_int("distance")
+			local distance_max = mesecon.setting("node_detector_distance_max", 10)
+			if distance < 0 then distance = 0 end
+			if distance > distance_max then distance = distance_max end
+
 			if channel ~= meta:get_string("digiline_channel") then return end
 
 			if msg == GET_COMMAND then
 				local nodename = minetest.get_node(
-					vector.subtract(pos, minetest.facedir_to_dir(node.param2))
+					vector.subtract(pos, vector.multiply(minetest.facedir_to_dir(node.param2), distance + 1))
 				).name
 
 				digiline:receptor_send(pos, digiline.rules.default, channel, nodename)
@@ -200,6 +238,7 @@ minetest.register_node("mesecons_detector:node_detector_off", {
 	tiles = {"default_steel_block.png", "default_steel_block.png", "default_steel_block.png", "default_steel_block.png", "default_steel_block.png", "jeija_node_detector_off.png"},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	walkable = true,
 	groups = {cracky=3},
 	description="Node Detector",
@@ -208,15 +247,16 @@ minetest.register_node("mesecons_detector:node_detector_off", {
 	}},
 	on_construct = node_detector_make_formspec,
 	on_receive_fields = node_detector_on_receive_fields,
-	after_place_node = after_place_node_detector,
 	sounds = default.node_sound_stone_defaults(),
-	digiline = node_detector_digiline
+	digiline = node_detector_digiline,
+	on_blast = mesecon.on_blastnode,
 })
 
 minetest.register_node("mesecons_detector:node_detector_on", {
 	tiles = {"default_steel_block.png", "default_steel_block.png", "default_steel_block.png", "default_steel_block.png", "default_steel_block.png", "jeija_node_detector_on.png"},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	walkable = true,
 	groups = {cracky=3,not_in_creative_inventory=1},
 	drop = 'mesecons_detector:node_detector_off',
@@ -225,9 +265,9 @@ minetest.register_node("mesecons_detector:node_detector_on", {
 	}},
 	on_construct = node_detector_make_formspec,
 	on_receive_fields = node_detector_on_receive_fields,
-	after_place_node = after_place_node_detector,
 	sounds = default.node_sound_stone_defaults(),
-	digiline = node_detector_digiline
+	digiline = node_detector_digiline,
+	on_blast = mesecon.on_blastnode,
 })
 
 minetest.register_craft({
@@ -239,6 +279,15 @@ minetest.register_craft({
 	}
 })
 
+minetest.register_craft({
+	output = 'mesecons_detector:node_detector_off',
+	recipe = {
+		{"default:steel_ingot", "group:mesecon_conductor_craftable", "default:steel_ingot"},
+		{"default:steel_ingot", "mesecons_microcontroller:microcontroller0000", "default:steel_ingot"},
+		{"default:steel_ingot", "default:steel_ingot", "default:steel_ingot"},
+	}
+})
+
 minetest.register_abm({
 	nodenames = {"mesecons_detector:node_detector_off"},
 	interval = 1,

mesecons_extrawires/corner.lua

@@ -1,12 +1,15 @@
+local screwdriver_exists = minetest.global_exists("screwdriver")
+
 local corner_nodebox = {
 	type = "fixed",
+	-- ±0.001 is to prevent z-fighting
 	fixed = {{ -16/32-0.001, -17/32, -3/32, 0, -13/32, 3/32 },
 		   { -3/32, -17/32, -16/32+0.001, 3/32, -13/32, 3/32}}
 }
 
 local corner_selectionbox = {
 		type = "fixed",
-		fixed = { -16/32-0.001, -18/32, -16/32, 5/32, -12/32, 5/32 },
+		fixed = { -16/32, -16/32, -16/32, 5/32, -12/32, 5/32 },
 }
 
 local corner_get_rules = function (node)
@@ -33,18 +36,22 @@ minetest.register_node("mesecons_extrawires:corner_on", {
 	},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	walkable = false,
 	sunlight_propagates = true,
 	selection_box = corner_selectionbox,
 	node_box = corner_nodebox,
 	groups = {dig_immediate = 3, not_in_creative_inventory = 1},
 	drop = "mesecons_extrawires:corner_off",
+	sounds = default.node_sound_defaults(),
 	mesecons = {conductor =
 	{
 		state = mesecon.state.on,
 		rules = corner_get_rules,
 		offstate = "mesecons_extrawires:corner_off"
-	}}
+	}},
+	on_blast = mesecon.on_blastnode,
+	on_rotate = screwdriver_exists and screwdriver.rotate_simple,
 })
 
 minetest.register_node("mesecons_extrawires:corner_off", {
@@ -60,17 +67,21 @@ minetest.register_node("mesecons_extrawires:corner_off", {
 	},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	walkable = false,
 	sunlight_propagates = true,
 	selection_box = corner_selectionbox,
 	node_box = corner_nodebox,
 	groups = {dig_immediate = 3},
+	sounds = default.node_sound_defaults(),
 	mesecons = {conductor =
 	{
 		state = mesecon.state.off,
 		rules = corner_get_rules,
 		onstate = "mesecons_extrawires:corner_on"
-	}}
+	}},
+	on_blast = mesecon.on_blastnode,
+	on_rotate = screwdriver_exists and screwdriver.rotate_simple,
 })
 
 minetest.register_craft({

mesecons_extrawires/crossover.lua

@@ -29,16 +29,19 @@ minetest.register_node("mesecons_extrawires:crossover_off", {
 		"jeija_insulated_wire_ends_off.png"
 	},
 	paramtype = "light",
+	is_ground_content = false,
 	walkable = false,
 	stack_max = 99,
-	selection_box = {type="fixed", fixed={-16/32-0.0001, -18/32, -16/32-0.001, 16/32+0.001, -5/32, 16/32+0.001}},
+	selection_box = {type="fixed", fixed={-16/32, -16/32, -16/32, 16/32, -5/32, 16/32}},
 	groups = {dig_immediate=3, mesecon=3},
+	sounds = default.node_sound_defaults(),
 	mesecons = {
 		conductor = {
 			states = crossover_states,
 			rules = crossover_get_rules(),
 		}
 	},
+	on_blast = mesecon.on_blastnode,
 })
 
 minetest.register_node("mesecons_extrawires:crossover_01", {
@@ -53,16 +56,19 @@ minetest.register_node("mesecons_extrawires:crossover_01", {
 		"jeija_insulated_wire_ends_off.png"
 	},
 	paramtype = "light",
+	is_ground_content = false,
 	walkable = false,
 	stack_max = 99,
-	selection_box = {type="fixed", fixed={-16/32-0.0001, -18/32, -16/32-0.001, 16/32+0.001, -5/32, 16/32+0.001}},
+	selection_box = {type="fixed", fixed={-16/32, -16/32, -16/32, 16/32, -5/32, 16/32}},
 	groups = {dig_immediate=3, mesecon=3, not_in_creative_inventory=1},
+	sounds = default.node_sound_defaults(),
 	mesecons = {
 		conductor = {
 			states = crossover_states,
 			rules = crossover_get_rules(),
 		}
 	},
+	on_blast = mesecon.on_blastnode,
 })
 
 minetest.register_node("mesecons_extrawires:crossover_10", {
@@ -77,16 +83,19 @@ minetest.register_node("mesecons_extrawires:crossover_10", {
 		"jeija_insulated_wire_ends_on.png"
 	},
 	paramtype = "light",
+	is_ground_content = false,
 	walkable = false,
 	stack_max = 99,
-	selection_box = {type="fixed", fixed={-16/32-0.0001, -18/32, -16/32-0.001, 16/32+0.001, -5/32, 16/32+0.001}},
+	selection_box = {type="fixed", fixed={-16/32, -16/32, -16/32, 16/32, -5/32, 16/32}},
 	groups = {dig_immediate=3, mesecon=3, not_in_creative_inventory=1},
+	sounds = default.node_sound_defaults(),
 	mesecons = {
 		conductor = {
 			states = crossover_states,
 			rules = crossover_get_rules(),
 		}
 	},
+	on_blast = mesecon.on_blastnode,
 })
 
 minetest.register_node("mesecons_extrawires:crossover_on", {
@@ -101,16 +110,19 @@ minetest.register_node("mesecons_extrawires:crossover_on", {
 		"jeija_insulated_wire_ends_on.png"
 	},
 	paramtype = "light",
+	is_ground_content = false,
 	walkable = false,
 	stack_max = 99,
-	selection_box = {type="fixed", fixed={-16/32-0.0001, -18/32, -16/32-0.001, 16/32+0.001, -5/32, 16/32+0.001}},
+	selection_box = {type="fixed", fixed={-16/32, -16/32, -16/32, 16/32, -5/32, 16/32}},
 	groups = {dig_immediate=3, mesecon=3, not_in_creative_inventory=1},
+	sounds = default.node_sound_defaults(),
 	mesecons = {
 		conductor = {
 			states = crossover_states,
 			rules = crossover_get_rules(),
 		}
 	},
+	on_blast = mesecon.on_blastnode,
 })
 
 minetest.register_craft({

mesecons_extrawires/depends.txt

@@ -1,2 +1,3 @@
 default
 mesecons
+screwdriver?

mesecons_extrawires/doc/corner/description.html

@@ -1 +1 @@
-Insulated corners are conductors that only conduct between the inputs (also not up or down). When placing they always point to the left in direction of your vision.
+Insulated corners are conductors that only conduct between the inputs (also not up or down). When placing they always point to the left in direction of your vision. Like uninsulated wires, they work through unloaded blocks.

mesecons_extrawires/doc/crossing/description.html

@@ -1 +1 @@
-Insulated crossing are conductors that conduct two signals between the opposing sides, the signals are insulated to each other.
+Insulated crossing are conductors that conduct two signals between the opposing sides, the signals are insulated to each other. Like uninsulated wires, they work through unloaded blocks.

mesecons_extrawires/doc/mese/description.html

@@ -1 +1 @@
-The basic prerequesite for mesecons, can be crafted into wires and other stuff. Have a look at the <a href="http://wiki.minetest.net/Mese">Minetest Wiki</a> for more information. Mese is a conductor. It conducts in all six directions: Up/Down/Left/Right/Forward/Backward
+The basic prerequesite for mesecons, can be crafted into wires and other stuff. Have a look at the <a href="http://wiki.minetest.net/Mese">Minetest Wiki</a> for more information. Mese is a conductor. It conducts in all six directions: Up/Down/Left/Right/Forward/Backward. Like horizontal wires, Mese conduction works through unloaded blocks.

mesecons_extrawires/doc/tjunction/description.html

@@ -1 +1 @@
-Insulated T-Junctions are conductors that only conduct between the inputs (also not up or down).
+Insulated T-Junctions are conductors that only conduct between the inputs (also not up or down). Like uninsulated wires, they work through unloaded blocks.

mesecons_extrawires/doc/vertical/description.html

@@ -1 +1 @@
-Vertical Mesecons only conduct up and down. Plates appear at the ends, at that place they also conduct to the side.
+Vertical Mesecons only conduct up and down. Plates appear at the ends, at that place they also conduct to the side. Like horizontal wires, they work through unloaded blocks.

mesecons_extrawires/mesewire.lua

@@ -26,7 +26,8 @@ local powered_def = mesecon.mergetable(minetest.registered_nodes["default:mese"]
 		offstate = "default:mese",
 		rules = mesewire_rules
 	}},
-	groups = {cracky = 1, not_in_creative_inventory = 1}
+	groups = {cracky = 1, not_in_creative_inventory = 1},
+	on_blast = mesecon.on_blastnode,
 })
 
 for i, v in pairs(powered_def.tiles) do

mesecons_extrawires/tjunction.lua

@@ -1,12 +1,15 @@
+local screwdriver_exists = minetest.global_exists("screwdriver")
+
 local tjunction_nodebox = {
 	type = "fixed",
+	-- ±0.001 is to prevent z-fighting
 	fixed = {{ -16/32-0.001, -17/32, -3/32, 16/32+0.001, -13/32, 3/32 },
 		 { -3/32, -17/32, -16/32+0.001, 3/32, -13/32, -3/32},}
 }
 
 local tjunction_selectionbox = {
 		type = "fixed",
-		fixed = { -16/32-0.001, -18/32, -16/32, 16/32+0.001, -12/32, 7/32 },
+		fixed = { -16/32, -16/32, -16/32, 16/32, -12/32, 7/32 },
 }
 
 local tjunction_get_rules = function (node)
@@ -34,18 +37,22 @@ minetest.register_node("mesecons_extrawires:tjunction_on", {
 	},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	walkable = false,
 	sunlight_propagates = true,
 	selection_box = tjunction_selectionbox,
 	node_box = tjunction_nodebox,
 	groups = {dig_immediate = 3, not_in_creative_inventory = 1},
 	drop = "mesecons_extrawires:tjunction_off",
+	sounds = default.node_sound_defaults(),
 	mesecons = {conductor =
 	{
 		state = mesecon.state.on,
 		rules = tjunction_get_rules,
 		offstate = "mesecons_extrawires:tjunction_off"
-	}}
+	}},
+	on_blast = mesecon.on_blastnode,
+	on_rotate = screwdriver_exists and screwdriver.rotate_simple,
 })
 
 minetest.register_node("mesecons_extrawires:tjunction_off", {
@@ -61,17 +68,21 @@ minetest.register_node("mesecons_extrawires:tjunction_off", {
 	},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	walkable = false,
 	sunlight_propagates = true,
 	selection_box = tjunction_selectionbox,
 	node_box = tjunction_nodebox,
 	groups = {dig_immediate = 3},
+	sounds = default.node_sound_defaults(),
 	mesecons = {conductor =
 	{
 		state = mesecon.state.off,
 		rules = tjunction_get_rules,
 		onstate = "mesecons_extrawires:tjunction_on"
-	}}
+	}},
+	on_blast = mesecon.on_blastnode,
+	on_rotate = screwdriver_exists and screwdriver.rotate_simple,
 })
 
 minetest.register_craft({

mesecons_extrawires/vertical.lua

@@ -77,17 +77,19 @@ end
 
 -- Vertical wire
 mesecon.register_node("mesecons_extrawires:vertical", {
-	description = "Vertical mesecon",
+	description = "Vertical Mesecon",
 	drawtype = "nodebox",
 	walkable = false,
 	paramtype = "light",
+	is_ground_content = false,
 	sunlight_propagates = true,
 	selection_box = vertical_box,
 	node_box = vertical_box,
 	is_vertical_conductor = true,
 	drop = "mesecons_extrawires:vertical_off",
 	after_place_node = vertical_update,
-	after_dig_node = vertical_update
+	after_dig_node = vertical_update,
+	sounds = default.node_sound_defaults(),
 },{
 	tiles = {"mesecons_wire_off.png"},
 	groups = {dig_immediate=3},
@@ -112,6 +114,7 @@ mesecon.register_node("mesecons_extrawires:vertical_top", {
 	drawtype = "nodebox",
 	walkable = false,
 	paramtype = "light",
+	is_ground_content = false,
 	sunlight_propagates = true,
 	groups = {dig_immediate=3, not_in_creative_inventory=1},
 	selection_box = top_box,
@@ -119,7 +122,8 @@ mesecon.register_node("mesecons_extrawires:vertical_top", {
 	is_vertical_conductor = true,
 	drop = "mesecons_extrawires:vertical_off",
 	after_place_node = vertical_update,
-	after_dig_node = vertical_update
+	after_dig_node = vertical_update,
+	sounds = default.node_sound_defaults(),
 },{
 	tiles = {"mesecons_wire_off.png"},
 	mesecons = {conductor = {
@@ -142,6 +146,7 @@ mesecon.register_node("mesecons_extrawires:vertical_bottom", {
 	drawtype = "nodebox",
 	walkable = false,
 	paramtype = "light",
+	is_ground_content = false,
 	sunlight_propagates = true,
 	groups = {dig_immediate = 3, not_in_creative_inventory = 1},
 	selection_box = bottom_box,
@@ -149,7 +154,8 @@ mesecon.register_node("mesecons_extrawires:vertical_bottom", {
 	is_vertical_conductor = true,
 	drop = "mesecons_extrawires:vertical_off",
 	after_place_node = vertical_update,
-	after_dig_node = vertical_update
+	after_dig_node = vertical_update,
+	sounds = default.node_sound_defaults(),
 },{
 	tiles = {"mesecons_wire_off.png"},
 	mesecons = {conductor = {

mesecons_fpga/depends.txt

@@ -1 +1,2 @@
 mesecons
+screwdriver?

mesecons_fpga/doc/fpga/description.html

@@ -1,5 +1,6 @@
 FPGAs can be used to chain multiple logic gates together in a compact manner.
 They come with 4 I/O ports and 10 internal registers,
-which can then be connected with eachother to form logic circuits.<br />
+which can then be connected with each other to form logic circuits.
+They work fine in unloaded blocks.<br />
 Supported gate types: <b>AND</b>, <b>OR</b>, <b>NOT</b>, <b>XOR</b>, <b>NAND</b>, <b>XNOR</b>, <b>Buffer</b> (=)<br />
 I/O ports: <b>A B C D</b>; Registers: numbered <b>0</b> to <b>9</b>

mesecons_fpga/init.lua

@@ -69,10 +69,11 @@ plg.register_nodes({
 		"jeija_fpga_sides.png"
 	},
 	inventory_image = "", -- replaced later
+	is_ground_content = false,
 	sunlight_propagates = true,
 	paramtype = "light",
 	walkable = true,
-	groups = {dig_immediate = 2, mesecon = 3},
+	groups = {dig_immediate = 2, mesecon = 3, overheat = 1},
 	drop = "mesecons_fpga:fpga0000",
 	selection_box = {
 		type = "fixed",
@@ -116,6 +117,45 @@ plg.register_nodes({
 	after_dig_node = function(pos, node)
 		mesecon.receptor_off(pos, plg.rules[node.name])
 	end,
+	on_blast = mesecon.on_blastnode,
+	on_rotate = function(pos, node, user, mode)
+		local abcd1 = {"A", "B", "C", "D"}
+		local abcd2 = {A = 1, B = 2, C = 3, D = 4}
+		local ops = {"op1", "op2", "dst"}
+		local dir = 0
+		if mode == screwdriver.ROTATE_FACE then -- clock-wise
+			dir = 1
+			if user and user:is_player() then
+				minetest.chat_send_player(user:get_player_name(),
+						"FPGA ports have been rotated clockwise.")
+			end
+		elseif mode == screwdriver.ROTATE_AXIS then -- counter-clockwise
+			dir = -1
+			if user and user:is_player() then
+				minetest.chat_send_player(user:get_player_name(),
+						"FPGA ports have been rotated counter-clockwise.")
+			end
+		end
+
+		local meta = minetest.get_meta(pos)
+		local instr = lcore.deserialize(meta:get_string("instr"))
+		for i = 1, #instr do
+			for _, op in ipairs(ops) do
+				local o = instr[i][op]
+				if o and o.type == "io" then
+					local num = abcd2[o.port]
+					num = num + dir
+					if num > 4 then num = 1
+					elseif num < 1 then num = 4 end
+					instr[i][op].port = abcd1[num]
+				end
+			end
+		end
+
+		meta:set_string("instr", lcore.serialize(instr))
+		plg.update_formspec(pos, instr)
+		return true
+	end,
 })
 
 
@@ -270,6 +310,11 @@ plg.update = function(pos)
 	local meta = minetest.get_meta(pos)
 	if meta:get_int("valid") ~= 1 then
 		return
+	elseif mesecon.do_overheat(pos) then
+		plg.setports(pos, false, false, false, false)
+		meta:set_int("valid", 0)
+		meta:set_string("infotext", "FPGA (overheated)")
+		return
 	end
 
 	local is = lcore.deserialize(meta:get_string("instr"))

mesecons_gates/doc/and/description.html

@@ -1 +1,2 @@
-And gates power their output if both inputs (from left and right) are powered.
+AND gates power their output if both inputs (from left and right) are powered.
+They work in unloaded blocks.

mesecons_gates/doc/diode/description.html

@@ -1 +1,2 @@
-Mesecon diodes, just like real ones, only transfer power (signals) in one direction only.
+Diodes conduct signals in one direction only.
+They work in unloaded blocks.

mesecons_gates/doc/nand/description.html

@@ -1 +1,2 @@
-Nand gates do not power their output if both inputs (from left and right) are powered, but power it in every other case.
+NAND gates do not power their output if both inputs (from left and right) are powered, but power it in every other case.
+They work in unloaded blocks.

mesecons_gates/doc/nor/description.html

@@ -1 +1,2 @@
-Nor gates only power their output if none of their two inputs is powered. They are basically or gates with a not gate at their output.
+NOR gates only power their output if none of their two inputs is powered. They are basically OR gates with a NOT gate at their output.
+They work in unloaded blocks.

mesecons_gates/doc/not/description.html

@@ -1 +1,2 @@
-Not gates invert signals, just like a mesecon torch does, but faster. The input is at the opposite side of the output.
+NOT gates invert signals, just like a mesecon torch does, but faster. The input is at the opposite side of the output.
+They work in unloaded blocks.

mesecons_gates/doc/or/description.html

@@ -1 +1,2 @@
-Or gates power their output if either of their inputs (or both) are powered. You could basically get the same behaviour with two diodes, but or gates save some space.
+OR gates power their output if either of their inputs (or both) are powered. You could basically get the same behaviour with two diodes, but OR gates save some space.
+They work in unloaded blocks.

mesecons_gates/doc/xor/description.html

@@ -1 +1,2 @@
 XOR gates power their output if only one input is powered, they're off if either both or none of the inputs is powered.
+They work in unloaded blocks.

mesecons_gates/init.lua

@@ -54,10 +54,10 @@ local function update_gate(pos, node, link, newstate)
 	end
 end
 
-local function register_gate(name, inputnumber, assess, recipe)
+local function register_gate(name, inputnumber, assess, recipe, description)
 	local get_inputrules = inputnumber == 2 and gate_get_input_rules_twoinputs or
 		gate_get_input_rules_oneinput
-	local description = "Mesecons Logic Gate: "..name
+	description = "Logic Gate: "..name
 
 	local basename = "mesecons_gates:"..name
 	mesecon.register_node(basename, {
@@ -65,6 +65,7 @@ local function register_gate(name, inputnumber, assess, recipe)
 		inventory_image = "jeija_gate_off.png^jeija_gate_"..name..".png",
 		paramtype = "light",
 		paramtype2 = "facedir",
+		is_ground_content = false,
 		drawtype = "nodebox",
 		drop = basename.."_off",
 		selection_box = nodebox,
@@ -74,7 +75,8 @@ local function register_gate(name, inputnumber, assess, recipe)
 		assess = assess,
 		onstate = basename.."_on",
 		offstate = basename.."_off",
-		inputnumber = inputnumber
+		inputnumber = inputnumber,
+		after_dig_node = mesecon.do_cooldown,
 	},{
 		tiles = {"jeija_microcontroller_bottom.png^".."jeija_gate_off.png^"..
 			"jeija_gate_"..name..".png"},
@@ -103,32 +105,39 @@ local function register_gate(name, inputnumber, assess, recipe)
 end
 
 register_gate("diode", 1, function (input) return input end,
-	{{"mesecons:mesecon", "mesecons_torch:mesecon_torch_on", "mesecons_torch:mesecon_torch_on"}})
+	{{"mesecons:mesecon", "mesecons_torch:mesecon_torch_on", "mesecons_torch:mesecon_torch_on"}},
+	"Diode")
 
 register_gate("not", 1, function (input) return not input end,
-	{{"mesecons:mesecon", "mesecons_torch:mesecon_torch_on", "mesecons:mesecon"}})
+	{{"mesecons:mesecon", "mesecons_torch:mesecon_torch_on", "mesecons:mesecon"}},
+	"NOT Gate")
 
 register_gate("and", 2, function (val1, val2) return val1 and val2 end,
 	{{"mesecons:mesecon", "", ""},
 	 {"", "mesecons_materials:silicon", "mesecons:mesecon"},
-	 {"mesecons:mesecon", "", ""}})
+	 {"mesecons:mesecon", "", ""}},
+	"AND Gate")
 
 register_gate("nand", 2, function (val1, val2) return not (val1 and val2) end,
 	{{"mesecons:mesecon", "", ""},
 	 {"", "mesecons_materials:silicon", "mesecons_torch:mesecon_torch_on"},
-	 {"mesecons:mesecon", "", ""}})
+	 {"mesecons:mesecon", "", ""}},
+	"NAND Gate")
 
 register_gate("xor", 2, function (val1, val2) return (val1 or val2) and not (val1 and val2) end,
 	{{"mesecons:mesecon", "", ""},
 	 {"", "mesecons_materials:silicon", "mesecons_materials:silicon"},
-	 {"mesecons:mesecon", "", ""}})
+	 {"mesecons:mesecon", "", ""}},
+	"XOR Gate")
 
 register_gate("nor", 2, function (val1, val2) return not (val1 or val2) end,
 	{{"mesecons:mesecon", "", ""},
 	 {"", "mesecons:mesecon", "mesecons_torch:mesecon_torch_on"},
-	 {"mesecons:mesecon", "", ""}})
+	 {"mesecons:mesecon", "", ""}},
+	"NOR Gate")
 
 register_gate("or", 2, function (val1, val2) return (val1 or val2) end,
 	{{"mesecons:mesecon", "", ""},
 	 {"", "mesecons:mesecon", "mesecons:mesecon"},
-	 {"mesecons:mesecon", "", ""}})
+	 {"mesecons:mesecon", "", ""}},
+	"OR Gate")

mesecons_hydroturbine/doc/waterturbine/description.html

@@ -1 +1,2 @@
 Water turbines are receptors that turn on if flowing water is above them.
+They only work in active blocks; in inactive blocks they keep their old state.

mesecons_hydroturbine/init.lua

@@ -13,6 +13,7 @@ minetest.register_node("mesecons_hydroturbine:hydro_turbine_off", {
 		"jeija_hydro_turbine_turbine_misc_off.png"
 	},
 	inventory_image = "jeija_hydro_turbine_inv.png",
+	is_ground_content = false,
 	wield_scale = {x=0.75, y=0.75, z=0.75},
 	groups = {dig_immediate=2},
 	description="Water Turbine",
@@ -21,14 +22,16 @@ minetest.register_node("mesecons_hydroturbine:hydro_turbine_off", {
 		type = "fixed",
 		fixed = { -0.5, -0.5, -0.5, 0.5, 1.5, 0.5 },
 	},
-	sounds = default.node_sound_stone_defaults(),
+	sounds = default.node_sound_metal_defaults(),
 	mesecons = {receptor = {
 		state = mesecon.state.off
-	}}
+	}},
+	on_blast = mesecon.on_blastnode,
 })
 
 minetest.register_node("mesecons_hydroturbine:hydro_turbine_on", {
 	drawtype = "mesh",
+	is_ground_content = false,
 	mesh = "jeija_hydro_turbine_on.obj",
 	wield_scale = {x=0.75, y=0.75, z=0.75},
 	tiles = {
@@ -48,10 +51,11 @@ minetest.register_node("mesecons_hydroturbine:hydro_turbine_on", {
 		type = "fixed",
 		fixed = { -0.5, -0.5, -0.5, 0.5, 1.5, 0.5 },
 	},
-	sounds = default.node_sound_stone_defaults(),
+	sounds = default.node_sound_metal_defaults(),
 	mesecons = {receptor = {
 		state = mesecon.state.on
-	}}
+	}},
+	on_blast = mesecon.on_blastnode,
 })
 
 
@@ -70,7 +74,6 @@ nodenames = {"mesecons_hydroturbine:hydro_turbine_off"},
 		local waterpos={x=pos.x, y=pos.y+1, z=pos.z}
 		if is_flowing_water(waterpos) then
 			minetest.set_node(pos, {name="mesecons_hydroturbine:hydro_turbine_on"})
-			nodeupdate(pos)
 			mesecon.receptor_on(pos)
 		end
 	end,
@@ -84,7 +87,6 @@ nodenames = {"mesecons_hydroturbine:hydro_turbine_on"},
 		local waterpos={x=pos.x, y=pos.y+1, z=pos.z}
 		if not is_flowing_water(waterpos) then
 			minetest.set_node(pos, {name="mesecons_hydroturbine:hydro_turbine_off"})
-			nodeupdate(pos)
 			mesecon.receptor_off(pos)
 		end
 	end,

mesecons_insulated/depends.txt

@@ -1 +1,2 @@
 mesecons
+screwdriver?

mesecons_insulated/doc/insulated/description.html

@@ -1 +1 @@
- Insulated mesecons are conductors that only conduct in one direction (and also not up or down).
+ Insulated mesecons are conductors that only conduct in one direction (and also not up or down). Like uninsulated wires, they work through unloaded blocks.

mesecons_insulated/init.lua

@@ -1,3 +1,5 @@
+local screwdriver_exists = minetest.global_exists("screwdriver")
+
 local function insulated_wire_get_rules(node)
 	local rules = 	{{x = 1,  y = 0,  z = 0},
 			 {x =-1,  y = 0,  z = 0}}
@@ -9,7 +11,7 @@ end
 
 minetest.register_node("mesecons_insulated:insulated_on", {
 	drawtype = "nodebox",
-	description = "Insulated Mesecon",
+	description = "Straight Insulated Mesecon",
 	tiles = {
 		"jeija_insulated_wire_sides_on.png",
 		"jeija_insulated_wire_sides_on.png",
@@ -20,28 +22,33 @@ minetest.register_node("mesecons_insulated:insulated_on", {
 	},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	walkable = false,
 	sunlight_propagates = true,
 	selection_box = {
 		type = "fixed",
-		fixed = { -16/32-0.001, -18/32, -7/32, 16/32+0.001, -12/32, 7/32 }
+		fixed = { -16/32, -16/32, -7/32, 16/32, -12/32, 7/32 }
 	},
 	node_box = {
 		type = "fixed",
+		-- ±0.001 is to prevent z-fighting
 		fixed = { -16/32-0.001, -17/32, -3/32, 16/32+0.001, -13/32, 3/32 }
 	},
 	groups = {dig_immediate = 3, not_in_creative_inventory = 1},
 	drop = "mesecons_insulated:insulated_off",
+	sounds = default.node_sound_defaults(),
 	mesecons = {conductor = {
 		state = mesecon.state.on,
 		offstate = "mesecons_insulated:insulated_off",
 		rules = insulated_wire_get_rules
-	}}
+	}},
+	on_blast = mesecon.on_blastnode,
+	on_rotate = screwdriver_exists and screwdriver.rotate_simple,
 })
 
 minetest.register_node("mesecons_insulated:insulated_off", {
 	drawtype = "nodebox",
-	description = "Insulated Mesecon",
+	description = "Straight Insulated Mesecon",
 	tiles = {
 		"jeija_insulated_wire_sides_off.png",
 		"jeija_insulated_wire_sides_off.png",
@@ -52,22 +59,27 @@ minetest.register_node("mesecons_insulated:insulated_off", {
 	},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	walkable = false,
 	sunlight_propagates = true,
 	selection_box = {
 		type = "fixed",
-		fixed = { -16/32-0.001, -18/32, -7/32, 16/32+0.001, -12/32, 7/32 }
+		fixed = { -16/32, -16/32, -7/32, 16/32, -12/32, 7/32 }
 	},
 	node_box = {
 		type = "fixed",
+		-- ±0.001 is to prevent z-fighting
 		fixed = { -16/32-0.001, -17/32, -3/32, 16/32+0.001, -13/32, 3/32 }
 	},
 	groups = {dig_immediate = 3},
+	sounds = default.node_sound_defaults(),
 	mesecons = {conductor = {
 		state = mesecon.state.off,
 		onstate = "mesecons_insulated:insulated_on",
 		rules = insulated_wire_get_rules
-	}}
+	}},
+	on_blast = mesecon.on_blastnode,
+	on_rotate = screwdriver_exists and screwdriver.rotate_simple,
 })
 
 minetest.register_craft({

mesecons_lamp/doc/lamp/description.html

@@ -1 +1 @@
-Lamps are effectors that if powered emit light.
+Mesecon lamps are effectors that if powered emit light.

mesecons_lamp/init.lua

@@ -14,10 +14,11 @@ minetest.register_node("mesecons_lamp:lamp_on", {
 	tiles = {"jeija_meselamp_on.png"},
 	paramtype = "light",
 	paramtype2 = "wallmounted",
+	is_ground_content = false,
 	legacy_wallmounted = true,
 	sunlight_propagates = true,
 	walkable = true,
-	light_source = default.LIGHT_MAX,
+	light_source = minetest.LIGHT_MAX,
 	node_box = mesecon_lamp_box,
 	selection_box = mesecon_lamp_box,
 	groups = {dig_immediate = 3,not_in_creative_inventory = 1, mesecon_effector_on = 1},
@@ -26,8 +27,10 @@ minetest.register_node("mesecons_lamp:lamp_on", {
 	mesecons = {effector = {
 		action_off = function (pos, node)
 			minetest.swap_node(pos, {name = "mesecons_lamp:lamp_off", param2 = node.param2})
-		end
-	}}
+		end,
+		rules = mesecon.rules.wallmounted_get,
+	}},
+	on_blast = mesecon.on_blastnode,
 })
 
 minetest.register_node("mesecons_lamp:lamp_off", {
@@ -37,18 +40,21 @@ minetest.register_node("mesecons_lamp:lamp_off", {
 	wield_image = "jeija_meselamp.png",
 	paramtype = "light",
 	paramtype2 = "wallmounted",
+	is_ground_content = false,
 	sunlight_propagates = true,
 	walkable = true,
 	node_box = mesecon_lamp_box,
 	selection_box = mesecon_lamp_box,
 	groups = {dig_immediate=3, mesecon_receptor_off = 1, mesecon_effector_off = 1},
-    	description="Meselamp",
+	description = "Mesecon Lamp",
 	sounds = default.node_sound_glass_defaults(),
 	mesecons = {effector = {
 		action_on = function (pos, node)
 			minetest.swap_node(pos, {name = "mesecons_lamp:lamp_on", param2 = node.param2})
-		end
-	}}
+		end,
+		rules = mesecon.rules.wallmounted_get,
+	}},
+	on_blast = mesecon.on_blastnode,
 })
 
 minetest.register_craft({

mesecons_lightstone/doc/lightstone_blue/description.html

@@ -1 +1,2 @@
 Effector, glows blue when powered.
+It works in an inactive block.

mesecons_lightstone/doc/lightstone_darkgrey/description.html

@@ -1 +1,2 @@
 Effector, glows dark grey when powered.
+It works in an inactive block.

mesecons_lightstone/doc/lightstone_green/description.html

@@ -1 +1,2 @@
 Effector, glows green when powered.
+It works in an inactive block.

mesecons_lightstone/doc/lightstone_lightgrey/description.html

@@ -1 +1,2 @@
 Effector, glows light grey when powered.
+It works in an inactive block.

mesecons_lightstone/doc/lightstone_red/description.html

@@ -1 +1,2 @@
 Effector, glows red when powered.
+It works in an inactive block.

mesecons_lightstone/doc/lightstone_yellow/description.html

@@ -1 +1,2 @@
 Effector, glows yellow when powered.
+It works in an inactive block.

mesecons_lightstone/init.lua

@@ -14,31 +14,38 @@ local lightstone_rules = {
 	{x=0,  y=-1, z=0},
 }
 
-function mesecon.lightstone_add(name, base_item, texture_off, texture_on)
+function mesecon.lightstone_add(name, base_item, texture_off, texture_on, desc)
+	if not desc then
+		desc = name .. " Lightstone"
+	end
 	minetest.register_node("mesecons_lightstone:lightstone_" .. name .. "_off", {
 		tiles = {texture_off},
+		is_ground_content = false,
 		groups = {cracky = 2, mesecon_effector_off = 1, mesecon = 2},
-		description=name.." Lightstone",
+		description = desc,
 		sounds = default.node_sound_stone_defaults(),
 		mesecons = {effector = {
 			rules = lightstone_rules,
 			action_on = function (pos, node)
 				minetest.swap_node(pos, {name = "mesecons_lightstone:lightstone_" .. name .. "_on", param2 = node.param2})
 			end,
-		}}
+		}},
+		on_blast = mesecon.on_blastnode,
 	})
 	minetest.register_node("mesecons_lightstone:lightstone_" .. name .. "_on", {
 		tiles = {texture_on},
+		is_ground_content = false,
 		groups = {cracky = 2, not_in_creative_inventory = 1, mesecon = 2},
 		drop = "mesecons_lightstone:lightstone_" .. name .. "_off",
-	light_source = default.LIGHT_MAX-2,
+		light_source = minetest.LIGHT_MAX - 2,
 		sounds = default.node_sound_stone_defaults(),
 		mesecons = {effector = {
 			rules = lightstone_rules,
 			action_off = function (pos, node)
 				minetest.swap_node(pos, {name = "mesecons_lightstone:lightstone_" .. name .. "_off", param2 = node.param2})
 			end,
-	}}
+		}},
+		on_blast = mesecon.on_blastnode,
 	})
 
 	minetest.register_craft({
@@ -52,9 +59,15 @@ function mesecon.lightstone_add(name, base_item, texture_off, texture_on)
 end
 
 
-mesecon.lightstone_add("red", "dye:red", "jeija_lightstone_red_off.png", "jeija_lightstone_red_on.png")
-mesecon.lightstone_add("green", "dye:green", "jeija_lightstone_green_off.png", "jeija_lightstone_green_on.png")
-mesecon.lightstone_add("blue", "dye:blue", "jeija_lightstone_blue_off.png", "jeija_lightstone_blue_on.png")
-mesecon.lightstone_add("gray", "dye:grey", "jeija_lightstone_gray_off.png", "jeija_lightstone_gray_on.png")
-mesecon.lightstone_add("darkgray", "dye:dark_grey", "jeija_lightstone_darkgray_off.png", "jeija_lightstone_darkgray_on.png")
-mesecon.lightstone_add("yellow", "dye:yellow", "jeija_lightstone_yellow_off.png", "jeija_lightstone_yellow_on.png")
+mesecon.lightstone_add("red", "dye:red", "jeija_lightstone_red_off.png", "jeija_lightstone_red_on.png", "Red Lightstone")
+mesecon.lightstone_add("green", "dye:green", "jeija_lightstone_green_off.png", "jeija_lightstone_green_on.png", "Green Lightstone")
+mesecon.lightstone_add("blue", "dye:blue", "jeija_lightstone_blue_off.png", "jeija_lightstone_blue_on.png", "Blue Lightstone")
+mesecon.lightstone_add("gray", "dye:grey", "jeija_lightstone_gray_off.png", "jeija_lightstone_gray_on.png", "Grey Lightstone")
+mesecon.lightstone_add("darkgray", "dye:dark_grey", "jeija_lightstone_darkgray_off.png", "jeija_lightstone_darkgray_on.png", "Dark Grey Lightstone")
+mesecon.lightstone_add("yellow", "dye:yellow", "jeija_lightstone_yellow_off.png", "jeija_lightstone_yellow_on.png", "Yellow Lightstone")
+mesecon.lightstone_add("orange", "dye:orange", "jeija_lightstone_orange_off.png", "jeija_lightstone_orange_on.png", "Orange Lightstone")
+mesecon.lightstone_add("white", "dye:white", "jeija_lightstone_white_off.png", "jeija_lightstone_white_on.png", "White Lightstone")
+mesecon.lightstone_add("pink", "dye:pink", "jeija_lightstone_pink_off.png", "jeija_lightstone_pink_on.png", "Pink Lightstone")
+mesecon.lightstone_add("magenta", "dye:magenta", "jeija_lightstone_magenta_off.png", "jeija_lightstone_magenta_on.png", "Magenta Lightstone")
+mesecon.lightstone_add("cyan", "dye:cyan", "jeija_lightstone_cyan_off.png", "jeija_lightstone_cyan_on.png", "Cyan Lightstone")
+mesecon.lightstone_add("violet", "dye:violet", "jeija_lightstone_violet_off.png", "jeija_lightstone_violet_on.png", "Violet Lightstone")

mesecons_luacontroller/doc/luacontroller/description.html

@@ -1,5 +1,7 @@
-The luacontroller is an advanced programmable component.
-You can simply code it in the language mesecons uses itself: Lua!
+The Luacontroller is an advanced programmable component.
+You can simply code it in the language Mesecons uses itself: Lua!
 All the code runs in a sandbox, so it's completely safe (but I won't guarantee that for absolute certainty!).
+It works fine in an unloaded block, loading the block when the program needs to run.
+Events are properly delivered after a server restart.
 
 <a href="http://mesecons.net/luacontroller/">Documentation is available here!</a>

mesecons_luacontroller/init.lua

@@ -12,9 +12,11 @@
 -- 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
+-- set_port_states(pos, ports): Applies new port states to a Luacontroller at pos
+-- run_inner(pos, code, event): runs code on the controller at pos and event
+-- reset_formspec(pos, code, errmsg): installs new code and prints error messages, without resetting LCID
+-- reset_meta(pos, code, errmsg): performs a software-reset, installs new code and prints error message
+-- run(pos, event): a wrapper for run_inner which gets code & handles errors via reset_meta
 -- resetn(pos): performs a hardware reset, turns off all ports
 --
 -- The Sandbox
@@ -141,7 +143,7 @@ local function set_port_states(pos, ports)
 		-- 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 {}
+		local ign = minetest.deserialize(meta:get_string("ignore_offevents"), true) or {}
 		if ports.a and not vports.a and not mesecon.is_powered(pos, rules.a) then ign.A = true end
 		if ports.b and not vports.b and not mesecon.is_powered(pos, rules.b) then ign.B = true end
 		if ports.c and not vports.c and not mesecon.is_powered(pos, rules.c) then ign.C = true end
@@ -183,7 +185,7 @@ end
 
 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 {}
+	local ignore_offevents = minetest.deserialize(meta:get_string("ignore_offevents"), true) or {}
 	if ignore_offevents[event.pin.name] then
 		ignore_offevents[event.pin.name] = nil
 		meta:set_string("ignore_offevents", minetest.serialize(ignore_offevents))
@@ -196,7 +198,11 @@ end
 -------------------------
 
 local function safe_print(param)
+	local string_meta = getmetatable("")
+	local sandbox = string_meta.__index
+	string_meta.__index = string -- Leave string sandbox temporarily
 	print(dump(param))
+	string_meta.__index = sandbox -- Restore string sandbox
 end
 
 local function safe_date()
@@ -219,7 +225,7 @@ end
 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 LuaController")
+		error("string.find: 'plain' (fourth parameter) must always be true in a Luacontroller")
 	end
 
 	return string.find(...)
@@ -232,10 +238,11 @@ local function remove_functions(x)
 	end
 
 	-- Make sure to not serialize the same table multiple times, otherwise
-	-- writing mem.test = mem in the LuaController will lead to infinite recursion
+	-- writing mem.test = mem in the Luacontroller will lead to infinite recursion
 	local seen = {}
 
 	local function rfuncs(x)
+		if x == nil then return end
 		if seen[x] then return end
 		seen[x] = true
 		if type(x) ~= "table" then return end
@@ -259,37 +266,149 @@ local function remove_functions(x)
 	return x
 end
 
-local function get_interrupt(pos)
+-- itbl: Flat table of functions to run after sandbox cleanup, used to prevent various security hazards
+local function get_interrupt(pos, itbl, send_warning)
 	-- iid = interrupt id
 	local function interrupt(time, iid)
+		-- NOTE: This runs within string metatable sandbox, so don't *rely* on anything of the form (""):y
+		-- Hence the values get moved out. Should take less time than original, so totally compatible
 		if type(time) ~= "number" then return end
+		table.insert(itbl, function ()
+			-- Outside string metatable sandbox, can safely run this now
 			local luac_id = minetest.get_meta(pos):get_int("luac_id")
+			-- Check if IID is dodgy, so you can't use interrupts to store an infinite amount of data.
+			-- Note that this is safe from alter-after-free because this code gets run after the sandbox has ended.
+			-- This runs outside of the timer and *shouldn't* harm perf. unless dodgy data is being sent in the first place
+			iid = remove_functions(iid)
+			local msg_ser = minetest.serialize(iid)
+			if #msg_ser <= mesecon.setting("luacontroller_interruptid_maxlen", 256) then
 				mesecon.queue:add_action(pos, "lc_interrupt", {luac_id, iid}, time, iid, 1)
+			else
+				send_warning("An interrupt ID was too large!")
+			end
+		end)
 	end
 	return interrupt
 end
 
 
-local function get_digiline_send(pos)
-	if not digiline then return end
+-- Given a message object passed to digiline_send, clean it up into a form
+-- which is safe to transmit over the network and compute its "cost" (a very
+-- rough estimate of its memory usage).
+--
+-- The cleaning comprises the following:
+-- 1. Functions (and userdata, though user scripts ought not to get hold of
+--    those in the first place) are removed, because they break the model of
+--    Digilines as a network that carries basic data, and they could exfiltrate
+--    references to mutable objects from one Luacontroller to another, allowing
+--    inappropriate high-bandwidth, no-wires communication.
+-- 2. Tables are duplicated because, being mutable, they could otherwise be
+--    modified after the send is complete in order to change what data arrives
+--    at the recipient, perhaps in violation of the previous cleaning rule or
+--    in violation of the message size limit.
+--
+-- The cost indication is only approximate; it’s not a perfect measurement of
+-- the number of bytes of memory used by the message object.
+--
+-- Parameters:
+-- msg -- the message to clean
+-- back_references -- for internal use only; do not provide
+--
+-- Returns:
+-- 1. The cleaned object.
+-- 2. The approximate cost of the object.
+local function clean_and_weigh_digiline_message(msg, back_references)
+	local t = type(msg)
+	if t == "string" then
+		-- Strings are immutable so can be passed by reference, and cost their
+		-- length plus the size of the Lua object header (24 bytes on a 64-bit
+		-- platform) plus one byte for the NUL terminator.
+		return msg, #msg + 25
+	elseif t == "number" then
+		-- Numbers are passed by value so need not be touched, and cost 8 bytes
+		-- as all numbers in Lua are doubles.
+		return msg, 8
+	elseif t == "boolean" then
+		-- Booleans are passed by value so need not be touched, and cost 1
+		-- byte.
+		return msg, 1
+	elseif t == "table" then
+		-- Tables are duplicated. Check if this table has been seen before
+		-- (self-referential or shared table); if so, reuse the cleaned value
+		-- of the previous occurrence, maintaining table topology and avoiding
+		-- infinite recursion, and charge zero bytes for this as the object has
+		-- already been counted.
+		back_references = back_references or {}
+		local bref = back_references[msg]
+		if bref then
+			return bref, 0
+		end
+		-- Construct a new table by cleaning all the keys and values and adding
+		-- up their costs, plus 8 bytes as a rough estimate of table overhead.
+		local cost = 8
+		local ret = {}
+		back_references[msg] = ret
+		for k, v in pairs(msg) do
+			local k_cost, v_cost
+			k, k_cost = clean_and_weigh_digiline_message(k, back_references)
+			v, v_cost = clean_and_weigh_digiline_message(v, back_references)
+			if k ~= nil and v ~= nil then
+				-- Only include an element if its key and value are of legal
+				-- types.
+				ret[k] = v
+			end
+			-- If we only counted the cost of a table element when we actually
+			-- used it, we would be vulnerable to the following attack:
+			-- 1. Construct a huge table (too large to pass the cost limit).
+			-- 2. Insert it somewhere in a table, with a function as a key.
+			-- 3. Insert it somewhere in another table, with a number as a key.
+			-- 4. The first occurrence doesn’t pay the cost because functions
+			--    are stripped and therefore the element is dropped.
+			-- 5. The second occurrence doesn’t pay the cost because it’s in
+			--    back_references.
+			-- By counting the costs regardless of whether the objects will be
+			-- included, we avoid this attack; it may overestimate the cost of
+			-- some messages, but only those that won’t be delivered intact
+			-- anyway because they contain illegal object types.
+			cost = cost + k_cost + v_cost
+		end
+		return ret, cost
+	else
+		return nil, 0
+	end
+end
+
+
+-- itbl: Flat table of functions to run after sandbox cleanup, used to prevent various security hazards
+local function get_digiline_send(pos, itbl, send_warning)
+	if not minetest.global_exists("digilines") then return end
+	local chan_maxlen = mesecon.setting("luacontroller_digiline_channel_maxlen", 256)
+	local maxlen = mesecon.setting("luacontroller_digiline_maxlen", 50000)
 	return function(channel, msg)
+		-- NOTE: This runs within string metatable sandbox, so don't *rely* on anything of the form (""):y
+		--        or via anything that could.
 		-- Make sure channel is string, number or boolean
-		if (type(channel) ~= "string" and type(channel) ~= "number" and type(channel) ~= "boolean") then
+		if type(channel) == "string" then
+			if #channel > chan_maxlen then
+				send_warning("Channel string too long.")
+				return false
+			end
+		elseif (type(channel) ~= "string" and type(channel) ~= "number" and type(channel) ~= "boolean") then
+			send_warning("Channel must be string, number or boolean.")
 			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
+		local msg_cost
+		msg, msg_cost = clean_and_weigh_digiline_message(msg)
+		if msg == nil or msg_cost > maxlen then
+			send_warning("Message was too complex, or contained invalid data.")
 			return false
 		end
 
-		minetest.after(0, function()
-			digiline:receptor_send(pos, digiline.rules.default, channel, msg)
+		table.insert(itbl, function ()
+			-- Runs outside of string metatable sandbox
+			local luac_id = minetest.get_meta(pos):get_int("luac_id")
+			mesecon.queue:add_action(pos, "lc_digiline_relay", {channel, luac_id, msg})
 		end)
 		return true
 	end
@@ -297,29 +416,30 @@ end
 
 
 local safe_globals = {
+	-- Don't add pcall/xpcall unless willing to deal with the consequences (unless very careful, incredibly likely to allow killing server indirectly)
 	"assert", "error", "ipairs", "next", "pairs", "select",
 	"tonumber", "tostring", "type", "unpack", "_VERSION"
 }
 
-local function create_environment(pos, mem, event)
+local function create_environment(pos, mem, event, itbl, send_warning)
 	-- Gather variables for the environment
 	local vports = minetest.registered_nodes[minetest.get_node(pos).name].virtual_portstates
 	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.
+	-- 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 = minetest.get_meta(pos):get_int("heat"),
+		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),
+		interrupt = get_interrupt(pos, itbl, send_warning),
+		digiline_send = get_digiline_send(pos, itbl, send_warning),
 		string = {
 			byte = string.byte,
 			char = string.char,
@@ -407,10 +527,11 @@ local function create_sandbox(code, env)
 		jit.off(f, true)
 	end
 
+	local maxevents = mesecon.setting("luacontroller_maxevents", 10000)
 	return function(...)
+		-- NOTE: This runs within string metatable sandbox, so the setting's been moved out for safety
 		-- 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
@@ -421,7 +542,7 @@ end
 
 
 local function load_memory(meta)
-	return minetest.deserialize(meta:get_string("lc_memory")) or {}
+	return minetest.deserialize(meta:get_string("lc_memory"), true) or {}
 end
 
 
@@ -431,6 +552,7 @@ local function save_memory(pos, meta, mem)
 
 	if (#memstring <= memsize_max) then
 		meta:set_string("lc_memory", memstring)
+		meta:mark_as_private("lc_memory")
 	else
 		print("Error: Luacontroller memory overflow. "..memsize_max.." bytes available, "
 				..#memstring.." required. Controller overheats.")
@@ -438,26 +560,42 @@ local function save_memory(pos, meta, mem)
 	end
 end
 
-
-local function run(pos, event)
+-- Returns success (boolean), errmsg (string)
+-- run (as opposed to run_inner) is responsible for setting up meta according to this output
+local function run_inner(pos, code, event)
 	local meta = minetest.get_meta(pos)
-	if overheat(pos) then return end
-	if ignore_event(event, meta) then return end
+	-- Note: These return success, presumably to avoid changing LC ID.
+	if overheat(pos) then return true, "" end
+	if ignore_event(event, meta) then return true, "" end
 
 	-- Load code & mem from meta
 	local mem  = load_memory(meta)
 	local code = meta:get_string("code")
 
+	-- 'Last warning' label.
+	local warning = ""
+	local function send_warning(str)
+		warning = "Warning: " .. str
+	end
+
 	-- Create environment
-	local env = create_environment(pos, mem, event)
+	local itbl = {}
+	local env = create_environment(pos, mem, event, itbl, send_warning)
 
 	-- Create the sandbox and execute code
 	local f, msg = create_sandbox(code, env)
-	if not f then return msg end
+	if not f then return false, msg end
+	-- Start string true sandboxing
+	local onetruestring = getmetatable("")
+	-- If a string sandbox is already up yet inconsistent, something is very wrong
+	assert(onetruestring.__index == string)
+	onetruestring.__index = env.string
 	local success, msg = pcall(f)
-	if not success then return msg end
+	onetruestring.__index = string
+	-- End string true sandboxing
+	if not success then return false, msg end
 	if type(env.port) ~= "table" then
-		return "Ports set are invalid."
+		return false, "Ports set are invalid."
 	end
 
 	-- Actually set the ports
@@ -465,7 +603,57 @@ local function run(pos, event)
 
 	-- Save memory. This may burn the luacontroller if a memory overflow occurs.
 	save_memory(pos, meta, env.mem)
+
+	-- Execute deferred tasks
+	for _, v in ipairs(itbl) do
+		local failure = v()
+		if failure then
+			return false, failure
 		end
+	end
+	return true, warning
+end
+
+local function reset_formspec(meta, code, errmsg)
+	meta:set_string("code", code)
+	meta:mark_as_private("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]"
+		.."label[0.1,8.3;"..errmsg.."]"
+		.."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;]"
+		)
+end
+
+local function reset_meta(pos, code, errmsg)
+	local meta = minetest.get_meta(pos)
+	reset_formspec(meta, code, errmsg)
+	meta:set_int("luac_id", math.random(1, 65535))
+end
+
+-- Wraps run_inner with LC-reset-on-error
+local function run(pos, event)
+	local meta = minetest.get_meta(pos)
+	local code = meta:get_string("code")
+	local ok, errmsg = run_inner(pos, code, event)
+	if not ok then
+		reset_meta(pos, code, errmsg)
+	else
+		reset_formspec(meta, code, errmsg)
+	end
+	return ok, errmsg
+end
+
+local function reset(pos)
+	set_port_states(pos, {a=false, b=false, c=false, d=false})
+end
+
+-----------------------
+-- A.Queue callbacks --
+-----------------------
 
 mesecon.queue:add_function("lc_interrupt", function (pos, luac_id, iid)
 	-- There is no luacontroller anymore / it has been reprogrammed / replaced / burnt
@@ -474,25 +662,14 @@ mesecon.queue:add_function("lc_interrupt", function (pos, luac_id, iid)
 	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(errmsg or "")
-	meta:set_string("formspec", "size[10,8]"..
-		"background[-0.2,-0.25;10.4,8.75;jeija_luac_background.png]"..
-		"textarea[0.2,0.6;10.2,5;code;;"..code.."]"..
-		"image_button[3.75,6;2.5,1;jeija_luac_runbutton.png;program;]"..
-		"image_button_exit[9.72,-0.25;0.425,0.4;jeija_close_window.png;exit;]"..
-		"label[0.1,5;"..errmsg.."]")
-	meta:set_int("heat", 0)
-	meta:set_int("luac_id", math.random(1, 65535))
-end
-
-local function reset(pos)
-	set_port_states(pos, {a=false, b=false, c=false, d=false})
-end
-
+mesecon.queue:add_function("lc_digiline_relay", function (pos, channel, luac_id, msg)
+	if not digiline then return end
+	-- This check is only really necessary because in case of server crash, old actions can be thrown into the future
+	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
+	-- The actual work
+	digiline:receptor_send(pos, digiline.rules.default, channel, msg)
+end)
 
 -----------------------
 -- Node Registration --
@@ -519,10 +696,23 @@ local digiline = {
 	receptor = {},
 	effector = {
 		action = function(pos, node, channel, msg)
+			msg = clean_and_weigh_digiline_message(msg)
 			run(pos, {type = "digiline", channel = channel, msg = msg})
 		end
 	}
 }
+
+local function get_program(pos)
+	local meta = minetest.get_meta(pos)
+	return meta:get_string("code")
+end
+
+local function set_program(pos, code)
+	reset(pos)
+	reset_meta(pos, code)
+	return run(pos, {type="program"})
+end
+
 local function on_receive_fields(pos, form_name, fields, sender)
 	if not fields.program then
 		return
@@ -532,12 +722,10 @@ local function on_receive_fields(pos, form_name, fields, sender)
 		minetest.record_protection_violation(pos, name)
 		return
 	end
-	reset(pos)
-	reset_meta(pos, fields.code)
-	local err = run(pos, {type="program"})
-	if err then
-		print(err)
-		reset_meta(pos, fields.code, err)
+	local ok, err = set_program(pos, fields.code)
+	if not ok then
+		-- it's not an error from the server perspective
+		minetest.log("action", "Lua controller programming error: " .. tostring(err))
 	end
 end
 
@@ -591,11 +779,15 @@ for d = 0, 1 do
 		receptor = {
 			state = mesecon.state.on,
 			rules = output_rules[cid]
-		}
+		},
+		luacontroller = {
+			get_program = get_program,
+			set_program = set_program,
+		},
 	}
 
 	minetest.register_node(node_name, {
-		description = "LuaController",
+		description = "Luacontroller",
 		drawtype = "nodebox",
 		tiles = {
 			top,
@@ -607,6 +799,7 @@ for d = 0, 1 do
 		},
 		inventory_image = top,
 		paramtype = "light",
+		is_ground_content = false,
 		groups = groups,
 		drop = BASENAME.."0000",
 		sunlight_propagates = true,
@@ -626,9 +819,11 @@ for d = 0, 1 do
 			d = d == 1,
 		},
 		after_dig_node = function (pos, node)
+			mesecon.do_cooldown(pos)
 			mesecon.receptor_off(pos, output_rules)
 		end,
 		is_luacontroller = true,
+		on_blast = mesecon.on_blastnode,
 	})
 end
 end
@@ -636,7 +831,7 @@ end
 end
 
 ------------------------------
--- Overheated LuaController --
+-- Overheated Luacontroller --
 ------------------------------
 
 minetest.register_node(BASENAME .. "_burnt", {
@@ -652,6 +847,7 @@ minetest.register_node(BASENAME .. "_burnt", {
 	inventory_image = "jeija_luacontroller_burnt_top.png",
 	is_burnt = true,
 	paramtype = "light",
+	is_ground_content = false,
 	groups = {dig_immediate=2, not_in_creative_inventory=1},
 	drop = BASENAME.."0000",
 	sunlight_propagates = true,
@@ -669,6 +865,7 @@ minetest.register_node(BASENAME .. "_burnt", {
 			end,
 		},
 	},
+	on_blast = mesecon.on_blastnode,
 })
 
 ------------------------

mesecons_microcontroller/init.lua

@@ -69,6 +69,7 @@ minetest.register_node(nodename, {
 
 	sunlight_propagates = true,
 	paramtype = "light",
+	is_ground_content = false,
 	walkable = true,
 	groups = groups,
 	drop = "mesecons_microcontroller:microcontroller0000 1",
@@ -102,6 +103,12 @@ minetest.register_node(nodename, {
 		meta:set_string("eeprom", r)
 	end,
 	on_receive_fields = function(pos, formanme, fields, sender)
+		local player_name = sender:get_player_name()
+		if minetest.is_protected(pos, player_name) and
+				not minetest.check_player_privs(player_name, {protection_bypass=true}) then
+			minetest.record_protection_violation(pos, player_name)
+			return
+		end
 		local meta = minetest.get_meta(pos)
 		if fields.band then
 			fields.code = "sbi(C, A&B) :A and B are inputs, C is output"
@@ -138,12 +145,25 @@ minetest.register_node(nodename, {
 		rules = microc_rules[node.name]
 		mesecon.receptor_off(pos, rules)
 	end,
+	on_blast = mesecon.on_blastnode,
 })
 end
 end
 end
 end
 
+if minetest.get_modpath("mesecons_luacontroller") then
+	minetest.register_craft({
+		type = "shapeless",
+		output = "mesecons_microcontroller:microcontroller0000",
+		recipe = {"mesecons_luacontroller:luacontroller0000"},
+	})
+	minetest.register_craft({
+		type = "shapeless",
+		output = "mesecons_luacontroller:luacontroller0000",
+		recipe = {"mesecons_microcontroller:microcontroller0000"},
+	})
+else
 	minetest.register_craft({
 		output = 'craft "mesecons_microcontroller:microcontroller0000" 2',
 		recipe = {
@@ -152,6 +172,7 @@ minetest.register_craft({
 			{'group:mesecon_conductor_craftable', 'group:mesecon_conductor_craftable', ''},
 		}
 	})
+end
 
 yc.reset = function(pos)
 	yc.action(pos, {a=false, b=false, c=false, d=false})
@@ -257,7 +278,7 @@ yc.parsecode = function(code, pos)
 end
 
 yc.parse_get_command = function(code, starti)
-	i = starti
+	local i = starti
 	local s
 	while s ~= "" do
 		s = string.sub(code, i, i)
@@ -283,7 +304,7 @@ yc.parse_get_command = function(code, starti)
 end
 
 yc.parse_get_params = function(code, starti)
-	i = starti
+	local i = starti
 	local s
 	local params = {}
 	local is_string = false
@@ -306,7 +327,7 @@ yc.parse_get_params = function(code, starti)
 end
 
 yc.parse_get_eeprom_param = function(cond, starti)
-	i = starti
+	local i = starti
 	local s
 	local addr
 	while s ~= "" do
@@ -473,7 +494,7 @@ end
 
 --Condition parsing
 yc.command_if_getcondition = function(code, starti)
-	i = starti
+	local i = starti
 	local s
 	local brackets = 1 --1 Bracket to close
 	while s ~= "" do
@@ -550,6 +571,7 @@ yc.command_parsecondition = function(cond, L, eeprom)
 		if cond:sub(i+1, i+1) == nil then break end
 		if s == "&" then
 			if a==nil then return nil end
+			if b==nil then return nil end
 			local buf = ((a==1) and (b==1))
 			if buf == true  then buf = "1" end
 			if buf == false then buf = "0" end
@@ -559,6 +581,7 @@ yc.command_parsecondition = function(cond, L, eeprom)
 		end
 		if s == "|" then
 			if a==nil then return nil end
+			if b==nil then return nil end
 			local buf = ((a == 1) or (b == 1))
 			if buf == true  then buf = "1" end
 			if buf == false then buf = "0" end
@@ -568,6 +591,7 @@ yc.command_parsecondition = function(cond, L, eeprom)
 		end
 		if s == "~" then
 			if a==nil then return nil end
+			if b==nil then return nil end
 			local buf = (((a == 1) or (b == 1)) and not((a==1) and (b==1)))
 			if buf == true  then buf = "1" end
 			if buf == false then buf = "0" end

mesecons_movestones/doc/movestone/description.html

@@ -1 +1,2 @@
 Movestones are effectors that push the blocks in front of them. They move along on the right side of a mesecon wire track.
+A movestone trying to move into, or push other nodes into, an unloaded block doesn't move.

mesecons_movestones/doc/movestone_sticky/description.html

@@ -1 +1,3 @@
 Movestones are effectors that push the blocks in front of them. They move along on the right side of a mesecon wire track. Sticky ones also pull blocks.
+A sticky movestone trying to move into, or push other nodes into, an unloaded block doesn't move.
+A sticky movestone trying to pull nodes from an unloaded block moves but leaves them behind.

mesecons_movestones/init.lua

@@ -8,124 +8,156 @@
 -- Pushes all block in front of it
 -- Pull all blocks in its back
 
-function mesecon.get_movestone_direction(pos)
-	local lpos
-	local rules = {
-		{x=0,  y=1,  z=-1},
-		{x=0,  y=0,  z=-1},
-		{x=0,  y=-1, z=-1},
-		{x=0,  y=1,  z=1},
-		{x=0,  y=-1, z=1},
-		{x=0,  y=0,  z=1},
-		{x=1,  y=0,  z=0},
-		{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=-1, y=0,  z=0}}
+-- settings:
+local timer_interval = 1 / mesecon.setting("movestone_speed", 3)
+local max_push = mesecon.setting("movestone_max_push", 50)
+local max_pull = mesecon.setting("movestone_max_pull", 50)
 
-	lpos = {x=pos.x+1, y=pos.y, z=pos.z}
-	for n = 1, 3 do
-		if mesecon.is_power_on(lpos, rules[n]) then
+-- helper functions:
+local function get_movestone_direction(rulename, is_vertical)
+	if is_vertical then
+		if rulename.z > 0 then
+			return {x = 0, y = -1, z = 0}
+		elseif rulename.z < 0 then
+			return {x = 0, y = 1, z = 0}
+		elseif rulename.x > 0 then
+			return {x = 0, y = -1, z = 0}
+		elseif rulename.x < 0 then
+			return {x = 0, y = 1, z = 0}
+		end
+	else
+		if rulename.z > 0 then
+			return {x = -1, y = 0, z = 0}
+		elseif rulename.z < 0 then
+			return {x = 1, y = 0, z = 0}
+		elseif rulename.x > 0 then
 			return {x = 0, y = 0, z = -1}
-		end
-	end
-
-	lpos = {x = pos.x-1, y = pos.y, z = pos.z}
-	for n=4, 6 do
-		if mesecon.is_power_on(lpos, rules[n]) then
+		elseif rulename.x < 0 then
 			return {x = 0, y = 0, z = 1}
 		end
 	end
-
-	lpos = {x = pos.x, y = pos.y, z = pos.z+1}
-	for n=7, 9 do
-		if mesecon.is_power_on(lpos, rules[n]) then
-			return {x=-1, y=0, z=0}
-		end
 end
 
-	lpos = {x = pos.x, y = pos.y, z = pos.z-1}
-	for n=10, 12 do
-		if mesecon.is_power_on(lpos, rules[n]) then
-			return {x=1, y=0, z=0}
-		end
-	end
-end
-
-function mesecon.register_movestone(name, def, is_sticky)
-	local timer_interval = 1 / mesecon.setting("movestone_speed", 3)
-	local name_active = name.."_active"
-
-	local function movestone_move (pos)
-		if minetest.get_node(pos).name ~= name_active then
-			return
-		end
-
-		local direction = mesecon.get_movestone_direction(pos)
-		if not direction then
-			minetest.set_node(pos, {name = name})
-			return
-		end
+-- registration functions:
+function mesecon.register_movestone(name, def, is_sticky, is_vertical)
+	local function movestone_move(pos, node, rulename)
+		local direction = get_movestone_direction(rulename, is_vertical)
 		local frontpos = vector.add(pos, direction)
-		local backpos = vector.subtract(pos, direction)
 
 		-- ### Step 1: Push nodes in front ###
-		local maxpush = mesecon.setting("movestone_max_push", 50)
-		local maxpull = mesecon.setting("movestone_max_pull", 50)
-		local success, stack, oldstack = mesecon.mvps_push(frontpos, direction, maxpush)
-		if success then
-			mesecon.mvps_process_stack(stack)
-			mesecon.mvps_move_objects(frontpos, direction, oldstack)
-		-- Too large stack/stopper in the way: try again very soon
-		else
-			minetest.after(0.05, movestone_move, pos)
+		local success, stack, oldstack = mesecon.mvps_push(frontpos, direction, max_push)
+		if not success then
+			minetest.get_node_timer(pos):start(timer_interval)
 			return
 		end
+		mesecon.mvps_move_objects(frontpos, direction, oldstack)
 
 		-- ### Step 2: Move the movestone ###
-		local node = minetest.get_node(pos)
 		minetest.set_node(frontpos, node)
 		minetest.remove_node(pos)
 		mesecon.on_dignode(pos, node)
 		mesecon.on_placenode(frontpos, node)
-		minetest.after(timer_interval, movestone_move, frontpos)
+		minetest.get_node_timer(frontpos):start(timer_interval)
 
 		-- ### Step 3: If sticky, pull stack behind ###
 		if is_sticky then
-			mesecon.mvps_pull_all(backpos, direction, maxpull)
+			local backpos = vector.subtract(pos, direction)
+			success, stack, oldstack = mesecon.mvps_pull_all(backpos, direction, max_pull)
+			if success then
+				mesecon.mvps_move_objects(backpos, vector.multiply(direction, -1), oldstack, -1)
 			end
 		end
 
+		-- ### Step 4: Let things fall ###
+		minetest.check_for_falling(vector.add(pos, {x=0, y=1, z=0}))
+	end
+
+	def.is_ground_content = false
+
 	def.mesecons = {effector = {
-		action_on = function (pos)
-			if minetest.get_node(pos).name ~= name_active then
-				minetest.set_node(pos, {name = name_active})
-				movestone_move(pos)
+		action_on = function(pos, node, rulename)
+			if rulename and not minetest.get_node_timer(pos):is_started() then
+				movestone_move(pos, node, rulename)
 			end
 		end,
-		action_off = function (pos)
-			minetest.set_node(pos, {name = name})
-		end
+		rules = mesecon.rules.default,
 	}}
 
-	def.drop = name
-
-	minetest.register_node(name, def)
-
-	-- active node only
-	local def_active = table.copy(def)
-	def_active.groups.not_in_creative_inventory = 1
-	minetest.register_node(name_active, def_active)
+	def.on_timer = function(pos, elapsed)
+		local sourcepos = mesecon.is_powered(pos)
+		if not sourcepos then
+			return
+		end
+		local rulename = vector.subtract(sourcepos[1], pos)
+		mesecon.activate(pos, minetest.get_node(pos), rulename, 0)
 	end
 
+	def.on_blast = mesecon.on_blastnode
+
+	minetest.register_node(name, def)
+end
+
+
+-- registration:
 mesecon.register_movestone("mesecons_movestones:movestone", {
-	tiles = {"jeija_movestone_side.png", "jeija_movestone_side.png", "jeija_movestone_side.png", "jeija_movestone_side.png", "jeija_movestone_arrows.png", "jeija_movestone_arrows.png"},
+	tiles = {
+		"jeija_movestone_side.png",
+		"jeija_movestone_side.png",
+		"jeija_movestone_arrows.png^[transformFX",
+		"jeija_movestone_arrows.png^[transformFX",
+		"jeija_movestone_arrows.png",
+		"jeija_movestone_arrows.png",
+	},
 	groups = {cracky = 3},
     description = "Movestone",
 	sounds = default.node_sound_stone_defaults()
-}, false)
+}, false, false)
 
+mesecon.register_movestone("mesecons_movestones:sticky_movestone", {
+	tiles = {
+		"jeija_movestone_side.png",
+		"jeija_movestone_side.png",
+		"jeija_sticky_movestone.png^[transformFX",
+		"jeija_sticky_movestone.png^[transformFX",
+		"jeija_sticky_movestone.png",
+		"jeija_sticky_movestone.png",
+	},
+	groups = {cracky = 3},
+    description = "Sticky Movestone",
+	sounds = default.node_sound_stone_defaults(),
+}, true, false)
+
+mesecon.register_movestone("mesecons_movestones:movestone_vertical", {
+	tiles = {
+		"jeija_movestone_side.png",
+		"jeija_movestone_side.png",
+		"jeija_movestone_arrows.png^[transformFXR90",
+		"jeija_movestone_arrows.png^[transformR90",
+		"jeija_movestone_arrows.png^[transformFXR90",
+		"jeija_movestone_arrows.png^[transformR90",
+	},
+	groups = {cracky = 3},
+    description = "Vertical Movestone",
+	sounds = default.node_sound_stone_defaults()
+}, false, true)
+
+mesecon.register_movestone("mesecons_movestones:sticky_movestone_vertical", {
+	tiles = {
+		"jeija_movestone_side.png^(mesecons_glue.png^[opacity:127)",
+		"jeija_movestone_side.png^(mesecons_glue.png^[opacity:127)",
+		"jeija_movestone_arrows.png^[transformFXR90",
+		"jeija_movestone_arrows.png^[transformR90",
+		"jeija_movestone_arrows.png^[transformFXR90",
+		"jeija_movestone_arrows.png^[transformR90",
+	},
+	groups = {cracky = 3},
+    description = "Vertical Sticky Movestone",
+	sounds = default.node_sound_stone_defaults(),
+}, true, true)
+
+
+-- crafting:
+-- base recipe:
 minetest.register_craft({
 	output = "mesecons_movestones:movestone 2",
 	recipe = {
@@ -135,15 +167,32 @@ minetest.register_craft({
 	}
 })
 
--- STICKY_MOVESTONE
-mesecon.register_movestone("mesecons_movestones:sticky_movestone", {
-	tiles = {"jeija_movestone_side.png", "jeija_movestone_side.png", "jeija_movestone_side.png", "jeija_movestone_side.png", "jeija_sticky_movestone.png", "jeija_sticky_movestone.png"},
-	inventory_image = minetest.inventorycube("jeija_sticky_movestone.png", "jeija_movestone_side.png", "jeija_movestone_side.png"),
-	groups = {cracky=3},
-    	description="Sticky Movestone",
-	sounds = default.node_sound_stone_defaults(),
-}, true)
+-- conversation:
+minetest.register_craft({
+	type = "shapeless",
+	output = "mesecons_movestones:movestone",
+	recipe = {"mesecons_movestones:movestone_vertical"},
+})
 
+minetest.register_craft({
+	type = "shapeless",
+	output = "mesecons_movestones:movestone_vertical",
+	recipe = {"mesecons_movestones:movestone"},
+})
+
+minetest.register_craft({
+	type = "shapeless",
+	output = "mesecons_movestones:sticky_movestone",
+	recipe = {"mesecons_movestones:sticky_movestone_vertical"},
+})
+
+minetest.register_craft({
+	type = "shapeless",
+	output = "mesecons_movestones:sticky_movestone_vertical",
+	recipe = {"mesecons_movestones:sticky_movestone"},
+})
+
+-- make sticky:
 minetest.register_craft({
 	output = "mesecons_movestones:sticky_movestone",
 	recipe = {
@@ -151,6 +200,18 @@ minetest.register_craft({
 	}
 })
 
--- Don't allow pushing movestones while they're active
-mesecon.register_mvps_stopper("mesecons_movestones:movestone_active")
-mesecon.register_mvps_stopper("mesecons_movestones:sticky_movestone_active")
+minetest.register_craft({
+	output = "mesecons_movestones:sticky_movestone_vertical",
+	recipe = {
+		{"mesecons_materials:glue"},
+		{"mesecons_movestones:movestone_vertical"},
+		{"mesecons_materials:glue"},
+	}
+})
+
+
+-- legacy code:
+minetest.register_alias("mesecons_movestones:movestone_active",
+		"mesecons_movestones:movestone")
+minetest.register_alias("mesecons_movestones:sticky_movestone_active",
+		"mesecons_movestones:sticky_movestone")

mesecons_mvps/init.lua

@@ -55,8 +55,6 @@ end
 
 -- tests if the node can be pushed into, e.g. air, water, grass
 local function node_replaceable(name)
-	if name == "ignore" then return true end
-
 	if minetest.registered_nodes[name] then
 		return minetest.registered_nodes[name].buildable_to or false
 	end
@@ -165,6 +163,10 @@ function mesecon.mvps_push_or_pull(pos, stackdir, movedir, maximum, all_pull_sti
 	-- remove all nodes
 	for _, n in ipairs(nodes) do
 		n.meta = minetest.get_meta(n.pos):to_table()
+		local node_timer = minetest.get_node_timer(n.pos)
+		if node_timer:is_started() then
+			n.node_timer = {node_timer:get_timeout(), node_timer:get_elapsed()}
+		end
 		minetest.remove_node(n.pos)
 	end
 
@@ -179,6 +181,9 @@ function mesecon.mvps_push_or_pull(pos, stackdir, movedir, maximum, all_pull_sti
 
 		minetest.set_node(np, n.node)
 		minetest.get_meta(np):from_table(n.meta)
+		if n.node_timer then
+			minetest.get_node_timer(np):set(unpack(n.node_timer))
+		end
 	end
 
 	local moved_nodes = {}
@@ -190,6 +195,7 @@ function mesecon.mvps_push_or_pull(pos, stackdir, movedir, maximum, all_pull_sti
 		moved_nodes[i].pos = nodes[i].pos
 		moved_nodes[i].node = nodes[i].node
 		moved_nodes[i].meta = nodes[i].meta
+		moved_nodes[i].node_timer = nodes[i].node_timer
 	end
 
 	on_mvps_move(moved_nodes)
@@ -197,52 +203,83 @@ function mesecon.mvps_push_or_pull(pos, stackdir, movedir, maximum, all_pull_sti
 	return true, nodes, oldstack
 end
 
-mesecon.register_on_mvps_move(function(moved_nodes)
-	for _, n in ipairs(moved_nodes) do
-		mesecon.on_placenode(n.pos, n.node)
-	end
-end)
-
-function mesecon.mvps_move_objects(pos, dir, nodestack)
+function mesecon.mvps_move_objects(pos, dir, nodestack, movefactor)
 	local objects_to_move = {}
-
-	-- Move object at tip of stack, pushpos is position at tip of stack
-	local pushpos = vector.add(pos, vector.multiply(dir, #nodestack))
-
-	local objects = minetest.get_objects_inside_radius(pushpos, 1)
-	for _, obj in ipairs(objects) do
-		table.insert(objects_to_move, obj)
-	end
-
-	-- Move objects lying/standing on the stack (before it was pushed - oldstack)
-	if tonumber(minetest.setting_get("movement_gravity")) > 0 and dir.y == 0 then
-		-- If gravity positive and dir horizontal, push players standing on the stack
-		for _, n in ipairs(nodestack) do
-			local p_above = vector.add(n.pos, {x=0, y=1, z=0})
-			local objects = minetest.get_objects_inside_radius(p_above, 1)
-			for _, obj in ipairs(objects) do
-				table.insert(objects_to_move, obj)
+	local dir_k
+	local dir_l
+	for k, v in pairs(dir) do
+		if v ~= 0 then
+			dir_k = k
+			dir_l = v
+			break
 		end
 	end
+	movefactor = movefactor or 1
+	dir = vector.multiply(dir, movefactor)
+	for id, obj in pairs(minetest.object_refs) do
+		local obj_pos = obj:getpos()
+		local cbox = obj:get_properties().collisionbox
+		local min_pos = vector.add(obj_pos, vector.new(cbox[1], cbox[2], cbox[3]))
+		local max_pos = vector.add(obj_pos, vector.new(cbox[4], cbox[5], cbox[6]))
+		local ok = true
+		for k, v in pairs(pos) do
+			local edge1, edge2
+			if k ~= dir_k then
+				edge1 = v - 0.51 -- More than 0.5 to move objects near to the stack.
+				edge2 = v + 0.51
+			else
+				edge1 = v - 0.5 * dir_l
+				edge2 = v + (#nodestack + 0.5 * movefactor) * dir_l
+				-- Make sure, edge1 is bigger than edge2:
+				if edge1 > edge2 then
+					edge1, edge2 = edge2, edge1
 				end
-
-	for _, obj in ipairs(objects_to_move) do
-		local entity = obj:get_luaentity()
-		if not entity or not mesecon.is_mvps_unmov(entity.name) then
-			local np = vector.add(obj:getpos(), dir)
-
-			--move only if destination is not solid
+			end
+			if min_pos[k] > edge2 or max_pos[k] < edge1 then
+				ok = false
+				break
+			end
+		end
+		if ok then
+			local ent = obj:get_luaentity()
+			if obj:is_player() or (ent and not mesecon.is_mvps_unmov(ent.name)) then
+				local np = vector.add(obj_pos, dir)
+				-- Move only if destination is not solid or object is inside stack:
 				local nn = minetest.get_node(np)
-			if not ((not minetest.registered_nodes[nn.name])
-			or minetest.registered_nodes[nn.name].walkable) then
-				obj:setpos(np)
+				local node_def = minetest.registered_nodes[nn.name]
+				local obj_offset = dir_l * (obj_pos[dir_k] - pos[dir_k])
+				if (node_def and not node_def.walkable) or
+						(obj_offset >= 0 and
+						obj_offset <= #nodestack - 0.5) then
+					obj:move_to(np)
 				end
 			end
 		end
 	end
+end
+
+-- Never push into unloaded blocks. Don’t try to pull from them, either.
+-- TODO: load blocks instead, as with wires.
+mesecon.register_mvps_stopper("ignore")
 
 mesecon.register_mvps_stopper("doors:door_steel_b_1")
 mesecon.register_mvps_stopper("doors:door_steel_t_1")
 mesecon.register_mvps_stopper("doors:door_steel_b_2")
 mesecon.register_mvps_stopper("doors:door_steel_t_2")
 mesecon.register_mvps_stopper("default:chest_locked")
+mesecon.register_on_mvps_move(mesecon.move_hot_nodes)
+mesecon.register_on_mvps_move(function(moved_nodes)
+	for i = 1, #moved_nodes do
+		local moved_node = moved_nodes[i]
+		mesecon.on_placenode(moved_node.pos, moved_node.node)
+		minetest.after(0, function()
+			minetest.check_for_falling(moved_node.oldpos)
+			minetest.check_for_falling(moved_node.pos)
+		end)
+		local node_def = minetest.registered_nodes[moved_node.node.name]
+		if node_def and node_def.mesecon and node_def.mesecon.on_mvps_move then
+			node_def.mesecon.on_mvps_move(moved_node.pos, moved_node.node,
+					moved_node.oldpos, moved_node.meta)
+		end
+	end
+end)

mesecons_noteblock/init.lua

@@ -1,6 +1,7 @@
 minetest.register_node("mesecons_noteblock:noteblock", {
 	description = "Noteblock",
 	tiles = {"mesecons_noteblock.png"},
+	is_ground_content = false,
 	groups = {snappy=2, choppy=2, oddly_breakable_by_hand=2},
 	on_punch = function(pos, node) -- change sound when punched
 		node.param2 = (node.param2+1)%12
@@ -12,7 +13,8 @@ minetest.register_node("mesecons_noteblock:noteblock", {
 		action_on = function(pos, node)
 			mesecon.noteblock_play(pos, node.param2)
 		end
-	}}
+	}},
+	on_blast = mesecon.on_blastnode,
 })
 
 minetest.register_craft({
@@ -43,7 +45,7 @@ local soundnames = {
 local node_sounds = {
 	["default:glass"] = "mesecons_noteblock_hihat",
 	["default:stone"] = "mesecons_noteblock_kick",
-	["default:lava_source"] = "fire_large",
+	["default:lava_source"] = "fire_fire",
 	["default:chest"] = "mesecons_noteblock_snare",
 	["default:tree"] = "mesecons_noteblock_crash",
 	["default:wood"] = "mesecons_noteblock_litecrash",

mesecons_pistons/doc/piston/description.html

@@ -1 +1,3 @@
 Pistons are effectors, they push up to 20 blocks in front of them. The push direction can be set by placing them from different angles.
+A piston pointing into an unloaded block won't extend.
+A piston retracting from an unloaded block works, but gravity-sensitive nodes above the empty space may not fall.

mesecons_pistons/doc/piston_sticky/description.html

@@ -1 +1,4 @@
 Sticky pistons are effectors, they push up to 20 blocks in front of them. The push direction can be set by placing them from different angles. Sticky ones also pull 1 block.
+A sticky piston pointing into an unloaded block won't extend.
+A sticky piston retracting from within an unloaded block works and pulls a node, but if it doesn't pull anything, then gravity-sensitive nodes above the empty space may not fall.
+An extended sticky piston that touches the surface of an unloaded block and loses signal retracts but doesn't pull anything.

mesecons_pistons/init.lua

@@ -1,65 +1,63 @@
+local specs = {
+	normal = {
+		offname = "mesecons_pistons:piston_normal_off",
+		onname = "mesecons_pistons:piston_normal_on",
+		pusher = "mesecons_pistons:piston_pusher_normal",
+	},
+	sticky = {
+		offname = "mesecons_pistons:piston_sticky_off",
+		onname = "mesecons_pistons:piston_sticky_on",
+		pusher = "mesecons_pistons:piston_pusher_sticky",
+		sticky = true,
+	},
+}
+
+local function get_pistonspec_name(name, part)
+	if part then
+		for spec_name, spec in pairs(specs) do
+			if name == spec[part] then
+				return spec_name, part
+			end
+		end
+		return
+	end
+	for spec_name, spec in pairs(specs) do
+		for part, value in pairs(spec)  do
+			if name == value then
+				return spec_name, part
+			end
+		end
+	end
+end
+
+local function get_pistonspec(name, part)
+	return specs[get_pistonspec_name(name, part)]
+end
+
+local max_push = mesecon.setting("piston_max_push", 15)
+local max_pull = mesecon.setting("piston_max_pull", 15)
+
 -- Get mesecon rules of pistons
-local piston_rules = {
- {x=0,  y=0,  z=1}, --everything apart from z- (pusher side)
- {x=1,  y=0,  z=0},
- {x=-1, y=0,  z=0},
- {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}
-}
-
-local piston_up_rules = {
- {x=0,  y=0,  z=-1}, --everything apart from y+ (pusher side)
- {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=0,  y=-1, z=1},
- {x=0,  y=-1, z=-1}
-}
-
-local piston_down_rules = {
- {x=0,  y=0,  z=-1}, --everything apart from y- (pusher side)
- {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=0,  y=1, z=1},
- {x=0,  y=1, z=-1}
-}
-
 local function piston_get_rules(node)
-	local rules = piston_rules
-	for i = 1, node.param2 do
-		rules = mesecon.rotate_rules_left(rules)
+	local dir = minetest.facedir_to_dir(node.param2)
+	for k, v in pairs(dir) do
+		if v ~= 0 then
+			dir = {k, -v}
+			break
+		end
+	end
+	local rules = table.copy(mesecon.rules.default)
+	for i, rule in ipairs(rules) do
+		if rule[dir[1]] == dir[2] then
+			table.remove(rules, i)
+		end
 	end
 	return rules
 end
 
-local function piston_facedir_direction(node)
-	local rules = {{x = 0, y = 0, z = -1}}
-	for i = 1, node.param2 do
-		rules = mesecon.rotate_rules_left(rules)
-	end
-	return rules[1]
-end
-
-local function piston_get_direction(dir, node)
-	if type(dir) == "function" then
-		return dir(node)
-	else
-		return dir
-	end
-end
-
-local piston_remove_pusher = function(pos, node)
-	local pistonspec = minetest.registered_nodes[node.name].mesecons_piston
-	local dir = piston_get_direction(pistonspec.dir, node)
+local function piston_remove_pusher(pos, node, check_falling)
+	local pistonspec = get_pistonspec(node.name, "onname")
+	local dir = vector.multiply(minetest.facedir_to_dir(node.param2), -1)
 	local pusherpos = vector.add(pos, dir)
 	local pushername = minetest.get_node(pusherpos).name
 
@@ -74,67 +72,173 @@ local piston_remove_pusher = function(pos, node)
 		max_hear_distance = 20,
 		gain = 0.3,
 	})
-	nodeupdate(pusherpos)
+
+	if check_falling then
+		minetest.check_for_falling(pusherpos)
+	end
+end
+
+local function piston_after_dig(pos, node)
+	piston_remove_pusher(pos, node, true)
 end
 
 local piston_on = function(pos, node)
-	local pistonspec = minetest.registered_nodes[node.name].mesecons_piston
-
-	local dir = piston_get_direction(pistonspec.dir, node)
-	local np = vector.add(pos, dir)
-	local maxpush = mesecon.setting("piston_max_push", 15)
-	local success, stack, oldstack = mesecon.mvps_push(np, dir, maxpush)
-	if success then
+	local pistonspec = get_pistonspec(node.name, "offname")
+	local dir = vector.multiply(minetest.facedir_to_dir(node.param2), -1)
+	local pusher_pos = vector.add(pos, dir)
+	local success, stack, oldstack = mesecon.mvps_push(pusher_pos, dir, max_push)
+	if not success then
+		return
+	end
 	minetest.set_node(pos, {param2 = node.param2, name = pistonspec.onname})
-		minetest.set_node(np,  {param2 = node.param2, name = pistonspec.pusher})
+	minetest.set_node(pusher_pos, {param2 = node.param2, name = pistonspec.pusher})
 	minetest.sound_play("piston_extend", {
 		pos = pos,
 		max_hear_distance = 20,
 		gain = 0.3,
 	})
 	mesecon.mvps_process_stack(stack)
-		mesecon.mvps_move_objects(np, dir, oldstack)
-	end
+	mesecon.mvps_move_objects(pusher_pos, dir, oldstack)
 end
 
-local piston_off = function(pos, node)
-	local pistonspec = minetest.registered_nodes[node.name].mesecons_piston
+local function piston_off(pos, node)
+	local pistonspec = get_pistonspec(node.name, "onname")
 	minetest.set_node(pos, {param2 = node.param2, name = pistonspec.offname})
-	piston_remove_pusher(pos, node)
+	piston_remove_pusher(pos, node, not pistonspec.sticky)
 
-	if pistonspec.sticky then
-		local maxpull = mesecon.setting("piston_max_pull", 15)
-		local dir = piston_get_direction(pistonspec.dir, node)
-		local pullpos = vector.add(pos, vector.multiply(dir, 2))
-		local stack = mesecon.mvps_pull_single(pullpos, vector.multiply(dir, -1), maxpull)
-		mesecon.mvps_process_stack(pos, dir, stack)
+	if not pistonspec.sticky then
+		return
+	end
+	local dir = minetest.facedir_to_dir(node.param2)
+	local pullpos = vector.add(pos, vector.multiply(dir, -2))
+	local success, stack, oldstack = mesecon.mvps_pull_single(pullpos, dir, max_pull)
+	if success then
+		mesecon.mvps_move_objects(pullpos, vector.multiply(dir, -1), oldstack, -1)
 	end
 end
 
-local piston_orientate = function(pos, placer)
-	-- not placed by player
-	if not placer then return end
-
-	-- placer pitch in degrees
-	local pitch = placer:get_look_pitch() * (180 / math.pi)
+local orientations = {
+	[0] = { 4,  8},
+	      {13, 17},
+	      {10,  6},
+	      {20, 15},
+}
 
+local function piston_orientate(pos, placer)
+	if not placer then
+		return
+	end
+	local pitch = math.deg(placer:get_look_vertical())
 	local node = minetest.get_node(pos)
-	local pistonspec = minetest.registered_nodes[node.name].mesecons_piston
-
-	-- looking upwards (pitch > 55) / looking downwards (pitch < -55)
-	local nn = nil
-	if pitch > 55 then nn = {name = pistonspec.piston_down} end
-	if pitch < -55 then nn = {name = pistonspec.piston_up} end
-
-	if nn then
-		minetest.set_node(pos, nn)
+	if pitch > 55 then
+		node.param2 = orientations[node.param2][1]
+	elseif pitch < -55 then
+		node.param2 = orientations[node.param2][2]
+	else
+		return
+	end
+	minetest.swap_node(pos, node)
 	-- minetest.after, because on_placenode for unoriented piston must be processed first
-		minetest.after(0, mesecon.on_placenode, pos, nn)
+	minetest.after(0, mesecon.on_placenode, pos, node)
+end
+
+local rotations = {
+	{0, 16, 20, 12},
+	{2, 14, 22, 18},
+	{1,  5, 23,  9},
+	{3, 11, 21,  7},
+	{4, 13, 10, 19},
+	{6, 15,  8, 17},
+}
+
+local function get_rotation(param2)
+	for a = 1, #rotations do
+		for f = 1, #rotations[a] do
+			if rotations[a][f] == param2 then
+				return a, f
+			end
+		end
 	end
 end
 
+local function rotate(param2, mode)
+	local axis, face = get_rotation(param2)
+	if mode == screwdriver.ROTATE_FACE then
+		face = face + 1
+		if face > 4 then
+			face = 1
+		end
+	elseif mode == screwdriver.ROTATE_AXIS then
+		axis = axis + 1
+		if axis > 6 then
+			axis = 1
+		end
+		face = 1
+	else
+		return param2
+	end
+	return rotations[axis][face]
+end
 
--- Horizontal pistons
+local function piston_rotate(pos, node, _, mode)
+	node.param2 = rotate(node.param2, mode)
+	minetest.swap_node(pos, node)
+	mesecon.execute_autoconnect_hooks_now(pos, node)
+	return true
+end
+
+local function piston_rotate_on(pos, node, player, mode)
+	local pistonspec = get_pistonspec(node.name, "onname")
+	local dir = vector.multiply(minetest.facedir_to_dir(node.param2), -1)
+	local pusher_pos = vector.add(dir, pos)
+	local pusher_node = minetest.get_node(pusher_pos)
+	if pusher_node.name ~= pistonspec.pusher then
+		return piston_rotate(pos, node, nil, mode)
+	end
+	if mode == screwdriver.ROTATE_FACE then
+		piston_rotate(pusher_pos, pusher_node, nil, mode)
+		return piston_rotate(pos, node, nil, mode)
+	elseif mode ~= screwdriver.ROTATE_AXIS then
+		return false
+	end
+	local player_name = player and player:is_player() and player:get_player_name() or ""
+	local ok, dir_after, pusher_pos_after
+	for i = 1, 5 do
+		node.param2 = rotate(node.param2, mode)
+		dir_after = vector.multiply(minetest.facedir_to_dir(node.param2), -1)
+		pusher_pos_after = vector.add(dir_after, pos)
+		local pusher_pos_after_node_name = minetest.get_node(pusher_pos_after).name
+		local pusher_pos_after_node_def = minetest.registered_nodes[pusher_pos_after_node_name]
+		if pusher_pos_after_node_def and pusher_pos_after_node_def.buildable_to and
+				not minetest.is_protected(pusher_pos_after, player_name) then
+			ok = true
+			break
+		end
+	end
+	if not ok then
+		return false
+	end
+	pusher_node.param2 = node.param2
+	minetest.remove_node(pusher_pos)
+	minetest.set_node(pusher_pos_after, pusher_node)
+	minetest.swap_node(pos, node)
+	mesecon.execute_autoconnect_hooks_now(pos, node)
+	return true
+end
+
+local function piston_rotate_pusher(pos, node, player, mode)
+	local pistonspec = get_pistonspec(node.name, "pusher")
+	local piston_pos = vector.add(pos, minetest.facedir_to_dir(node.param2))
+	local piston_node = minetest.get_node(piston_pos)
+	if piston_node.name ~= pistonspec.onname then
+		minetest.remove_node(pos) -- Make it possible to remove alone pushers.
+		return false
+	end
+	return piston_rotate_on(piston_pos, piston_node, player, mode)
+end
+
+
+-- Boxes:
 
 local pt = 3/16 -- pusher thickness
 
@@ -143,28 +247,18 @@ local piston_pusher_box = {
 	fixed = {
 		{-2/16, -2/16, -.5 + pt, 2/16, 2/16,  .5 + pt},
 		{-.5  , -.5  , -.5     , .5  , .5  , -.5 + pt},
-	}
+	},
 }
 
 local piston_on_box = {
 	type = "fixed",
 	fixed = {
 		{-.5, -.5, -.5 + pt, .5, .5, .5}
-	}
+	},
 }
 
 
--- Normal (non-sticky) ones:
-
-local pistonspec_normal = {
-	offname = "mesecons_pistons:piston_normal_off",
-	onname = "mesecons_pistons:piston_normal_on",
-	dir = piston_facedir_direction,
-	pusher = "mesecons_pistons:piston_pusher_normal",
-	piston_down = "mesecons_pistons:piston_down_normal_off",
-	piston_up   = "mesecons_pistons:piston_up_normal_off",
-}
-
+-- Normal (non-sticky) Pistons:
 -- offstate
 minetest.register_node("mesecons_pistons:piston_normal_off", {
 	description = "Piston",
@@ -178,17 +272,20 @@ minetest.register_node("mesecons_pistons:piston_normal_off", {
 	},
 	groups = {cracky = 3},
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	after_place_node = piston_orientate,
-	mesecons_piston = pistonspec_normal,
 	sounds = default.node_sound_wood_defaults(),
 	mesecons = {effector={
 		action_on = piston_on,
-		rules = piston_get_rules
-	}}
+		rules = piston_get_rules,
+	}},
+	on_rotate = piston_rotate,
+	on_blast = mesecon.on_blastnode,
 })
 
 -- onstate
 minetest.register_node("mesecons_pistons:piston_normal_on", {
+	description = "Activated Piston Base",
 	drawtype = "nodebox",
 	tiles = {
 		"mesecons_piston_top.png",
@@ -198,25 +295,26 @@ minetest.register_node("mesecons_pistons:piston_normal_on", {
 		"mesecons_piston_back.png",
 		"mesecons_piston_on_front.png"
 	},
-	inventory_image = "mesecons_piston_top.png",
-	wield_image = "mesecons_piston_top.png",
 	groups = {cracky = 3, not_in_creative_inventory = 1},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	drop = "mesecons_pistons:piston_normal_off",
-	after_dig_node = piston_remove_pusher,
+	after_dig_node = piston_after_dig,
 	node_box = piston_on_box,
 	selection_box = piston_on_box,
-	mesecons_piston = pistonspec_normal,
 	sounds = default.node_sound_wood_defaults(),
 	mesecons = {effector={
 		action_off = piston_off,
-		rules = piston_get_rules
-	}}
+		rules = piston_get_rules,
+	}},
+	on_rotate = piston_rotate_on,
+	on_blast = mesecon.on_blastnode,
 })
 
 -- pusher
 minetest.register_node("mesecons_pistons:piston_pusher_normal", {
+	description = "Piston Pusher",
 	drawtype = "nodebox",
 	tiles = {
 		"mesecons_piston_pusher_top.png",
@@ -226,26 +324,19 @@ minetest.register_node("mesecons_pistons:piston_pusher_normal", {
 		"mesecons_piston_pusher_back.png",
 		"mesecons_piston_pusher_front.png"
 	},
+	groups = {not_in_creative_inventory = 1},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	diggable = false,
-	corresponding_piston = "mesecons_pistons:piston_normal_on",
 	selection_box = piston_pusher_box,
 	node_box = piston_pusher_box,
+	on_rotate = piston_rotate_pusher,
+	drop = "",
+	sounds = default.node_sound_wood_defaults(),
 })
 
 -- Sticky ones
-
-local pistonspec_sticky = {
-	offname = "mesecons_pistons:piston_sticky_off",
-	onname = "mesecons_pistons:piston_sticky_on",
-	dir = piston_facedir_direction,
-	pusher = "mesecons_pistons:piston_pusher_sticky",
-	sticky = true,
-	piston_down = "mesecons_pistons:piston_down_sticky_off",
-	piston_up   = "mesecons_pistons:piston_up_sticky_off",
-}
-
 -- offstate
 minetest.register_node("mesecons_pistons:piston_sticky_off", {
 	description = "Sticky Piston",
@@ -259,17 +350,20 @@ minetest.register_node("mesecons_pistons:piston_sticky_off", {
 	},
 	groups = {cracky = 3},
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	after_place_node = piston_orientate,
-	mesecons_piston = pistonspec_sticky,
 	sounds = default.node_sound_wood_defaults(),
 	mesecons = {effector={
 		action_on = piston_on,
-		rules = piston_get_rules
-	}}
+		rules = piston_get_rules,
+	}},
+	on_rotate = piston_rotate,
+	on_blast = mesecon.on_blastnode,
 })
 
 -- onstate
 minetest.register_node("mesecons_pistons:piston_sticky_on", {
+	description = "Activated Sticky Piston Base",
 	drawtype = "nodebox",
 	tiles = {
 		"mesecons_piston_top.png",
@@ -279,25 +373,26 @@ minetest.register_node("mesecons_pistons:piston_sticky_on", {
 		"mesecons_piston_back.png",
 		"mesecons_piston_on_front.png"
 	},
-	inventory_image = "mesecons_piston_top.png",
-	wield_image = "mesecons_piston_top.png",
 	groups = {cracky = 3, not_in_creative_inventory = 1},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	drop = "mesecons_pistons:piston_sticky_off",
-	after_dig_node = piston_remove_pusher,
+	after_dig_node = piston_after_dig,
 	node_box = piston_on_box,
 	selection_box = piston_on_box,
-	mesecons_piston = pistonspec_sticky,
 	sounds = default.node_sound_wood_defaults(),
 	mesecons = {effector={
 		action_off = piston_off,
-		rules = piston_get_rules
-	}}
+		rules = piston_get_rules,
+	}},
+	on_rotate = piston_rotate_on,
+	on_blast = mesecon.on_blastnode,
 })
 
 -- pusher
 minetest.register_node("mesecons_pistons:piston_pusher_sticky", {
+	description = "Sticky Piston Pusher",
 	drawtype = "nodebox",
 	tiles = {
 		"mesecons_piston_pusher_top.png",
@@ -307,398 +402,37 @@ minetest.register_node("mesecons_pistons:piston_pusher_sticky", {
 		"mesecons_piston_pusher_back.png",
 		"mesecons_piston_pusher_front_sticky.png"
 	},
+	groups = {not_in_creative_inventory = 1},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	diggable = false,
-	corresponding_piston = "mesecons_pistons:piston_sticky_on",
 	selection_box = piston_pusher_box,
 	node_box = piston_pusher_box,
-})
-
---
---
--- UP
---
---
-
-local piston_up_pusher_box = {
-	type = "fixed",
-	fixed = {
-		{-2/16, -.5 - pt, -2/16, 2/16, .5 - pt, 2/16},
-		{-.5  ,  .5 - pt, -.5  , .5  , .5     ,   .5},
-	}
-}
-
-local piston_up_on_box = {
-	type = "fixed",
-	fixed = {
-		{-.5, -.5, -.5 , .5, .5-pt, .5}
-	}
-}
-
--- Normal
-
-local pistonspec_normal_up = {
-	offname = "mesecons_pistons:piston_up_normal_off",
-	onname = "mesecons_pistons:piston_up_normal_on",
-	dir = {x = 0, y = 1, z = 0},
-	pusher = "mesecons_pistons:piston_up_pusher_normal"
-}
-
--- offstate
-minetest.register_node("mesecons_pistons:piston_up_normal_off", {
-	tiles = {
-		"mesecons_piston_pusher_front.png",
-		"mesecons_piston_back.png",
-		"mesecons_piston_left.png^[transformR270",
-		"mesecons_piston_right.png^[transformR90",
-		"mesecons_piston_bottom.png",
-		"mesecons_piston_top.png^[transformR180",
-		},
-	inventory_image = "mesecons_piston_top.png",
-	wield_image = "mesecons_piston_top.png",
-	groups = {cracky = 3, not_in_creative_inventory = 1},
-	paramtype2 = "facedir",
-	drop = "mesecons_pistons:piston_normal_off",
-	mesecons_piston = pistonspec_normal_up,
-	mesecons = {effector={
-		action_on = piston_on,
-		rules = piston_up_rules,
-	}}
-})
-
--- onstate
-minetest.register_node("mesecons_pistons:piston_up_normal_on", {
-	drawtype = "nodebox",
-	tiles = {
-		"mesecons_piston_on_front.png",
-		"mesecons_piston_back.png",
-		"mesecons_piston_left.png^[transformR270",
-		"mesecons_piston_right.png^[transformR90",
-		"mesecons_piston_bottom.png",
-		"mesecons_piston_top.png^[transformR180",
-		},
-	inventory_image = "mesecons_piston_top.png",
-	wield_image = "mesecons_piston_top.png",
-	groups = {cracky = 3, not_in_creative_inventory = 1},
-	paramtype = "light",
-	paramtype2 = "facedir",
-	drop = "mesecons_pistons:piston_normal_off",
-	after_dig_node = piston_remove_pusher,
-	node_box = piston_up_on_box,
-	selection_box = piston_up_on_box,
-	mesecons_piston = pistonspec_normal_up,
+	on_rotate = piston_rotate_pusher,
+	drop = "",
 	sounds = default.node_sound_wood_defaults(),
-	mesecons = {effector={
-		action_off = piston_off,
-		rules = piston_up_rules,
-	}}
-})
-
--- pusher
-minetest.register_node("mesecons_pistons:piston_up_pusher_normal", {
-	drawtype = "nodebox",
-	tiles = {
-		"mesecons_piston_pusher_front.png",
-		"mesecons_piston_pusher_back.png",
-		"mesecons_piston_pusher_left.png^[transformR270",
-		"mesecons_piston_pusher_right.png^[transformR90",
-		"mesecons_piston_pusher_bottom.png",
-		"mesecons_piston_pusher_top.png^[transformR180",
-		},
-	paramtype = "light",
-	paramtype2 = "facedir",
-	diggable = false,
-	corresponding_piston = "mesecons_pistons:piston_up_normal_on",
-	selection_box = piston_up_pusher_box,
-	node_box = piston_up_pusher_box,
-})
-
-
-
--- Sticky
-
-
-local pistonspec_sticky_up = {
-	offname = "mesecons_pistons:piston_up_sticky_off",
-	onname = "mesecons_pistons:piston_up_sticky_on",
-	dir = {x = 0, y = 1, z = 0},
-	pusher = "mesecons_pistons:piston_up_pusher_sticky",
-	sticky = true
-}
-
--- offstate
-minetest.register_node("mesecons_pistons:piston_up_sticky_off", {
-	tiles = {
-		"mesecons_piston_pusher_front_sticky.png",
-		"mesecons_piston_back.png",
-		"mesecons_piston_left.png^[transformR270",
-		"mesecons_piston_right.png^[transformR90",
-		"mesecons_piston_bottom.png",
-		"mesecons_piston_top.png^[transformR180",
-		"mesecons_piston_tb.png"
-		},
-	inventory_image = "mesecons_piston_top.png",
-	wield_image = "mesecons_piston_top.png",
-	groups = {cracky = 3, not_in_creative_inventory = 1},
-	paramtype2 = "facedir",
-	drop = "mesecons_pistons:piston_sticky_off",
-	mesecons_piston = pistonspec_sticky_up,
-	sounds = default.node_sound_wood_defaults(),
-	mesecons = {effector={
-		action_on = piston_on,
-		rules = piston_up_rules,
-	}}
-})
-
--- onstate
-minetest.register_node("mesecons_pistons:piston_up_sticky_on", {
-	drawtype = "nodebox",
-	tiles = {
-		"mesecons_piston_on_front.png",
-		"mesecons_piston_back.png",
-		"mesecons_piston_left.png^[transformR270",
-		"mesecons_piston_right.png^[transformR90",
-		"mesecons_piston_bottom.png",
-		"mesecons_piston_top.png^[transformR180",
-		},
-	inventory_image = "mesecons_piston_top.png",
-	wield_image = "mesecons_piston_top.png",
-	groups = {cracky = 3, not_in_creative_inventory = 1},
-	paramtype = "light",
-	paramtype2 = "facedir",
-	drop = "mesecons_pistons:piston_normal_off",
-	after_dig_node = piston_remove_pusher,
-	node_box = piston_up_on_box,
-	selection_box = piston_up_on_box,
-	mesecons_piston = pistonspec_sticky_up,
-	sounds = default.node_sound_wood_defaults(),
-	mesecons = {effector={
-		action_off = piston_off,
-		rules = piston_up_rules,
-	}}
-})
-
--- pusher
-minetest.register_node("mesecons_pistons:piston_up_pusher_sticky", {
-	drawtype = "nodebox",
-	tiles = {
-		"mesecons_piston_pusher_front_sticky.png",
-		"mesecons_piston_pusher_back.png",
-		"mesecons_piston_pusher_left.png^[transformR270",
-		"mesecons_piston_pusher_right.png^[transformR90",
-		"mesecons_piston_pusher_bottom.png",
-		"mesecons_piston_pusher_top.png^[transformR180",
-		},
-	paramtype = "light",
-	paramtype2 = "facedir",
-	diggable = false,
-	corresponding_piston = "mesecons_pistons:piston_up_sticky_on",
-	selection_box = piston_up_pusher_box,
-	node_box = piston_up_pusher_box,
-})
-
---
---
--- DOWN
---
---
-
-local piston_down_pusher_box = {
-	type = "fixed",
-	fixed = {
-		{-2/16, -.5 + pt, -2/16, 2/16,  .5 + pt, 2/16},
-		{-.5  , -.5     , -.5  , .5  , -.5 + pt,   .5},
-	}
-}
-
-local piston_down_on_box = {
-	type = "fixed",
-	fixed = {
-		{-.5, -.5+pt, -.5 , .5, .5, .5}
-	}
-}
-
-
-
--- Normal
-
-local pistonspec_normal_down = {
-	offname = "mesecons_pistons:piston_down_normal_off",
-	onname = "mesecons_pistons:piston_down_normal_on",
-	dir = {x = 0, y = -1, z = 0},
-	pusher = "mesecons_pistons:piston_down_pusher_normal",
-}
-
--- offstate
-minetest.register_node("mesecons_pistons:piston_down_normal_off", {
-	tiles = {
-		"mesecons_piston_back.png",
-		"mesecons_piston_pusher_front.png",
-		"mesecons_piston_left.png^[transformR90",
-		"mesecons_piston_right.png^[transformR270",
-		"mesecons_piston_bottom.png^[transformR180",
-		"mesecons_piston_top.png",
-		},
-	inventory_image = "mesecons_piston_top.png",
-	wield_image = "mesecons_piston_top.png",
-	groups = {cracky = 3, not_in_creative_inventory = 1},
-	paramtype2 = "facedir",
-	drop = "mesecons_pistons:piston_normal_off",
-	mesecons_piston = pistonspec_normal_down,
-	sounds = default.node_sound_wood_defaults(),
-	mesecons = {effector={
-		action_on = piston_on,
-		rules = piston_down_rules,
-	}}
-})
-
--- onstate
-minetest.register_node("mesecons_pistons:piston_down_normal_on", {
-	drawtype = "nodebox",
-	tiles = {
-		"mesecons_piston_back.png",
-		"mesecons_piston_on_front.png",
-		"mesecons_piston_left.png^[transformR90",
-		"mesecons_piston_right.png^[transformR270",
-		"mesecons_piston_bottom.png^[transformR180",
-		"mesecons_piston_top.png",
-		},
-	inventory_image = "mesecons_piston_top.png",
-	wield_image = "mesecons_piston_top.png",
-	groups = {cracky = 3, not_in_creative_inventory = 1},
-	paramtype = "light",
-	paramtype2 = "facedir",
-	drop = "mesecons_pistons:piston_normal_off",
-	after_dig_node = piston_remove_pusher,
-	node_box = piston_down_on_box,
-	selection_box = piston_down_on_box,
-	mesecons_piston = pistonspec_normal_down,
-	sounds = default.node_sound_wood_defaults(),
-	mesecons = {effector={
-		action_off = piston_off,
-		rules = piston_down_rules,
-	}}
-})
-
--- pusher
-minetest.register_node("mesecons_pistons:piston_down_pusher_normal", {
-	drawtype = "nodebox",
-	tiles = {
-		"mesecons_piston_pusher_back.png",
-		"mesecons_piston_pusher_front.png",
-		"mesecons_piston_pusher_left.png^[transformR90",
-		"mesecons_piston_pusher_right.png^[transformR270",
-		"mesecons_piston_pusher_bottom.png^[transformR180",
-		"mesecons_piston_pusher_top.png",
-		},
-	paramtype = "light",
-	paramtype2 = "facedir",
-	diggable = false,
-	corresponding_piston = "mesecons_pistons:piston_down_normal_on",
-	selection_box = piston_down_pusher_box,
-	node_box = piston_down_pusher_box,
-})
-
--- Sticky
-
-local pistonspec_sticky_down = {
-	onname = "mesecons_pistons:piston_down_sticky_on",
-	offname = "mesecons_pistons:piston_down_sticky_off",
-	dir = {x = 0, y = -1, z = 0},
-	pusher = "mesecons_pistons:piston_down_pusher_sticky",
-	sticky = true
-}
-
--- offstate
-minetest.register_node("mesecons_pistons:piston_down_sticky_off", {
-	tiles = {
-		"mesecons_piston_back.png",
-		"mesecons_piston_pusher_front_sticky.png",
-		"mesecons_piston_left.png^[transformR90",
-		"mesecons_piston_right.png^[transformR270",
-		"mesecons_piston_bottom.png^[transformR180",
-		"mesecons_piston_top.png",
-		},
-	inventory_image = "mesecons_piston_top.png",
-	wield_image = "mesecons_piston_top.png",
-	groups = {cracky = 3, not_in_creative_inventory = 1},
-	paramtype2 = "facedir",
-	drop = "mesecons_pistons:piston_sticky_off",
-	mesecons_piston = pistonspec_sticky_down,
-	sounds = default.node_sound_wood_defaults(),
-	mesecons = {effector={
-		action_on = piston_on,
-		rules = piston_down_rules,
-	}}
-})
-
--- onstate
-minetest.register_node("mesecons_pistons:piston_down_sticky_on", {
-	drawtype = "nodebox",
-	tiles = {
-		"mesecons_piston_back.png",
-		"mesecons_piston_on_front.png",
-		"mesecons_piston_left.png^[transformR90",
-		"mesecons_piston_right.png^[transformR270",
-		"mesecons_piston_bottom.png^[transformR180",
-		"mesecons_piston_top.png",
-		},
-	inventory_image = "mesecons_piston_top.png",
-	wield_image = "mesecons_piston_top.png",
-	groups = {cracky = 3, not_in_creative_inventory = 1},
-	paramtype = "light",
-	paramtype2 = "facedir",
-	drop = "mesecons_pistons:piston_sticky_off",
-	after_dig_node = piston_remove_pusher,
-	node_box = piston_down_on_box,
-	selection_box = piston_down_on_box,
-	mesecons_piston = pistonspec_sticky_down,
-	sounds = default.node_sound_wood_defaults(),
-	mesecons = {effector={
-		action_off = piston_off,
-		rules = piston_down_rules,
-	}}
-})
-
--- pusher
-minetest.register_node("mesecons_pistons:piston_down_pusher_sticky", {
-	drawtype = "nodebox",
-	tiles = {
-		"mesecons_piston_pusher_back.png",
-		"mesecons_piston_pusher_front_sticky.png",
-		"mesecons_piston_pusher_left.png^[transformR90",
-		"mesecons_piston_pusher_right.png^[transformR270",
-		"mesecons_piston_pusher_bottom.png^[transformR180",
-		"mesecons_piston_pusher_top.png",
-		},
-	paramtype = "light",
-	paramtype2 = "facedir",
-	diggable = false,
-	corresponding_piston = "mesecons_pistons:piston_down_sticky_on",
-	selection_box = piston_down_pusher_box,
-	node_box = piston_down_pusher_box,
 })
 
 
 -- Register pushers as stoppers if they would be seperated from the piston
-local piston_pusher_get_stopper = function (node, dir, stack, stackid)
+local function piston_pusher_get_stopper(node, dir, stack, stackid)
 	if (stack[stackid + 1]
-	and stack[stackid + 1].node.name   == minetest.registered_nodes[node.name].corresponding_piston
+	and stack[stackid + 1].node.name   == get_pistonspec(node.name, "pusher").onname
 	and stack[stackid + 1].node.param2 == node.param2)
 	or (stack[stackid - 1]
-	and stack[stackid - 1].node.name   == minetest.registered_nodes[node.name].corresponding_piston
+	and stack[stackid - 1].node.name   == get_pistonspec(node.name, "pusher").onname
 	and stack[stackid - 1].node.param2 == node.param2) then
 		return false
 	end
 	return true
 end
 
-local piston_pusher_up_down_get_stopper = function (node, dir, stack, stackid)
+local function piston_pusher_up_down_get_stopper(node, dir, stack, stackid)
 	if (stack[stackid + 1]
-	and stack[stackid + 1].node.name   == minetest.registered_nodes[node.name].corresponding_piston)
+	and stack[stackid + 1].node.name   == get_pistonspec(node.name, "pusher").onname)
 	or (stack[stackid - 1]
-	and stack[stackid - 1].node.name   == minetest.registered_nodes[node.name].corresponding_piston) then
+	and stack[stackid - 1].node.name   == get_pistonspec(node.name, "pusher").onname) then
 		return false
 	end
 	return true
@@ -707,31 +441,24 @@ end
 mesecon.register_mvps_stopper("mesecons_pistons:piston_pusher_normal", piston_pusher_get_stopper)
 mesecon.register_mvps_stopper("mesecons_pistons:piston_pusher_sticky", piston_pusher_get_stopper)
 
-mesecon.register_mvps_stopper("mesecons_pistons:piston_up_pusher_normal", piston_pusher_up_down_get_stopper)
-mesecon.register_mvps_stopper("mesecons_pistons:piston_up_pusher_sticky", piston_pusher_up_down_get_stopper)
-
-mesecon.register_mvps_stopper("mesecons_pistons:piston_down_pusher_normal", piston_pusher_up_down_get_stopper)
-mesecon.register_mvps_stopper("mesecons_pistons:piston_down_pusher_sticky", piston_pusher_up_down_get_stopper)
-
 
 -- Register pistons as stoppers if they would be seperated from the stopper
 local piston_up_down_get_stopper = function (node, dir, stack, stackid)
 	if (stack[stackid + 1]
-	and stack[stackid + 1].node.name   == minetest.registered_nodes[node.name].mesecons_piston.pusher)
+	and stack[stackid + 1].node.name   == get_pistonspec(node.name, "onname").pusher)
 	or (stack[stackid - 1]
-	and stack[stackid - 1].node.name   == minetest.registered_nodes[node.name].mesecons_piston.pusher) then
+	and stack[stackid - 1].node.name   == get_pistonspec(node.name, "onname").pusher) then
 		return false
 	end
 	return true
 end
 
-local piston_get_stopper = function (node, dir, stack, stackid)
-	pistonspec = minetest.registered_nodes[node.name].mesecons_piston
-	dir = piston_get_direction(pistonspec.dir, node)
+local function piston_get_stopper(node, dir, stack, stackid)
+	local pistonspec = get_pistonspec(node.name, "onname")
+	local dir = vector.multiply(minetest.facedir_to_dir(node.param2), -1)
 	local pusherpos = vector.add(stack[stackid].pos, dir)
 	local pushernode = minetest.get_node(pusherpos)
-
-	if minetest.registered_nodes[node.name].mesecons_piston.pusher == pushernode.name then
+	if pistonspec.pusher == pushernode.name then
 		for _, s in ipairs(stack) do
 			if  vector.equals(s.pos, pusherpos) -- pusher is also to be pushed
 			and s.node.param2 == node.param2 then
@@ -745,11 +472,6 @@ end
 mesecon.register_mvps_stopper("mesecons_pistons:piston_normal_on", piston_get_stopper)
 mesecon.register_mvps_stopper("mesecons_pistons:piston_sticky_on", piston_get_stopper)
 
-mesecon.register_mvps_stopper("mesecons_pistons:piston_up_normal_on", piston_up_down_get_stopper)
-mesecon.register_mvps_stopper("mesecons_pistons:piston_up_sticky_on", piston_up_down_get_stopper)
-
-mesecon.register_mvps_stopper("mesecons_pistons:piston_down_normal_on", piston_up_down_get_stopper)
-mesecon.register_mvps_stopper("mesecons_pistons:piston_down_sticky_on", piston_up_down_get_stopper)
 
 --craft recipes
 minetest.register_craft({
@@ -768,3 +490,7 @@ minetest.register_craft({
 		{"mesecons_pistons:piston_normal_off"},
 	}
 })
+
+
+-- load legacy code
+dofile(minetest.get_modpath("mesecons_pistons")..DIR_DELIM.."legacy.lua")

mesecons_pistons/legacy.lua

@@ -0,0 +1,48 @@
+local ground_dir = {
+	[0] = {x =  0, y = -1, z =  0},
+	      {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},
+}
+
+minetest.register_lbm({
+	label = "Upgrade legacy pistons pointing up",
+	name = "mesecons_pistons:replace_legacy_piston_up",
+	nodenames = {
+		"mesecons_pistons:piston_up_normal_off",
+		"mesecons_pistons:piston_up_normal_on",
+		"mesecons_pistons:piston_up_pusher_normal",
+		"mesecons_pistons:piston_up_sticky_off",
+		"mesecons_pistons:piston_up_sticky_on",
+		"mesecons_pistons:piston_up_pusher_sticky",
+	},
+	run_at_every_load = false,
+	action = function(pos, node)
+		local dir = ground_dir[math.floor(node.param2/4)]
+		node.param2 = minetest.dir_to_facedir(dir, true)
+		node.name = node.name:sub(1, 24)..node.name:sub(28)
+		minetest.swap_node(pos, node)
+	end,
+})
+
+minetest.register_lbm({
+	label = "Upgrade legacy pistons pointing down",
+	name = "mesecons_pistons:replace_legacy_piston_down",
+	nodenames = {
+		"mesecons_pistons:piston_down_normal_off",
+		"mesecons_pistons:piston_down_normal_on",
+		"mesecons_pistons:piston_down_pusher_normal",
+		"mesecons_pistons:piston_down_sticky_off",
+		"mesecons_pistons:piston_down_sticky_on",
+		"mesecons_pistons:piston_down_pusher_sticky",
+	},
+	run_at_every_load = false,
+	action = function(pos, node)
+		local dir = vector.multiply(ground_dir[math.floor(node.param2/4)], -1)
+		node.param2 = minetest.dir_to_facedir(dir, true)
+		node.name = node.name:sub(1, 24)..node.name:sub(30)
+		minetest.swap_node(pos, node)
+	end,
+})

mesecons_powerplant/doc/powerplant/description.html

@@ -1 +1,2 @@
-A power plant is a receptor that is always turned on: It provides energy.
+A power plant is a receptor that is always turned on: it provides energy.
+It continues to work in an unloaded block.

mesecons_powerplant/init.lua

@@ -7,9 +7,10 @@ minetest.register_node("mesecons_powerplant:power_plant", {
 	tiles = {"jeija_power_plant.png"},
 	inventory_image = "jeija_power_plant.png",
 	paramtype = "light",
+	is_ground_content = false,
 	walkable = false,
 	groups = {dig_immediate=3, mesecon = 2},
-	light_source = default.LIGHT_MAX-9,
+	light_source = minetest.LIGHT_MAX-9,
     	description="Power Plant",
 	selection_box = {
 		type = "fixed",
@@ -18,7 +19,8 @@ minetest.register_node("mesecons_powerplant:power_plant", {
 	sounds = default.node_sound_leaves_defaults(),
 	mesecons = {receptor = {
 		state = mesecon.state.on
-	}}
+	}},
+	on_blast = mesecon.on_blastnode,
 })
 
 minetest.register_craft({

mesecons_pressureplates/doc/pressureplate_stone/description.html

@@ -1 +1 @@
-This receptor turns on if there's an object above it. And object can be a player, an item, a mob...
+This receptor turns on if there's an object above it. An object can be a player, an item, a mob...

mesecons_pressureplates/doc/pressureplate_wood/description.html

@@ -1 +1 @@
-This receptor turns on if there's an object above it. And object can be a player, an item, a mob...
+This receptor turns on if there's an object above it. An object can be a player, an item, a mob...

mesecons_pressureplates/init.lua

@@ -42,30 +42,42 @@ end
 -- tiles_on:	textures of the pressure plate when active
 -- image:	inventory and wield image of the pressure plate
 -- recipe:	crafting recipe of the pressure plate
+-- groups:	groups
+-- sounds:	sound table
+
+function mesecon.register_pressure_plate(basename, description, textures_off, textures_on, image_w, image_i, recipe, groups, sounds)
+	local groups_off, groups_on
+	if not groups then
+		groups = {}
+	end
+	local groups_off = table.copy(groups)
+	local groups_on = table.copy(groups)
+	groups_on.not_in_creative_inventory = 1
 
-function mesecon.register_pressure_plate(basename, description, textures_off, textures_on, image_w, image_i, recipe)
 	mesecon.register_node(basename, {
 		drawtype = "nodebox",
 		inventory_image = image_i,
 		wield_image = image_w,
 		paramtype = "light",
+		is_ground_content = false,
 		description = description,
 		pressureplate_basename = basename,
 		on_timer = pp_on_timer,
 		on_construct = function(pos)
 			minetest.get_node_timer(pos):start(mesecon.setting("pplate_interval", 0.1))
 		end,
+		sounds = sounds,
 	},{
 		mesecons = {receptor = { state = mesecon.state.off, rules = mesecon.rules.pplate }},
 		node_box = pp_box_off,
 		selection_box = pp_box_off,
-		groups = {snappy = 2, oddly_breakable_by_hand = 3},
+		groups = groups_off,
 		tiles = textures_off
 	},{
 		mesecons = {receptor = { state = mesecon.state.on, rules = mesecon.rules.pplate }},
 		node_box = pp_box_on,
 		selection_box = pp_box_on,
-		groups = {snappy = 2, oddly_breakable_by_hand = 3, not_in_creative_inventory = 1},
+		groups = groups_on,
 		tiles = textures_on
 	})
 
@@ -82,7 +94,9 @@ mesecon.register_pressure_plate(
 	{"jeija_pressure_plate_wood_on.png","jeija_pressure_plate_wood_on.png","jeija_pressure_plate_wood_on_edges.png"},
 	"jeija_pressure_plate_wood_wield.png",
 	"jeija_pressure_plate_wood_inv.png",
-	{{"group:wood", "group:wood"}})
+	{{"group:wood", "group:wood"}},
+	{ choppy = 3, oddly_breakable_by_hand = 3 },
+	default.node_sound_wood_defaults())
 
 mesecon.register_pressure_plate(
 	"mesecons_pressureplates:pressure_plate_stone",
@@ -91,4 +105,6 @@ mesecon.register_pressure_plate(
 	{"jeija_pressure_plate_stone_on.png","jeija_pressure_plate_stone_on.png","jeija_pressure_plate_stone_on_edges.png"},
 	"jeija_pressure_plate_stone_wield.png",
 	"jeija_pressure_plate_stone_inv.png",
-	{{"default:cobble", "default:cobble"}})
+	{{"default:cobble", "default:cobble"}},
+	{ cracky = 3, oddly_breakable_by_hand = 3 },
+	default.node_sound_stone_defaults())

mesecons_random/doc/ghoststone/description.html

@@ -1 +1,2 @@
-Ghoststones disappear when powered, just like Removestones. But in contrast to Removestones, they Reappear again when not powered anymore and they are also conductive.
+Ghoststones disappear when powered, just like Removestones. But in contrast to Removestones, they reappear again when not powered anymore and they are also conductive.
+They work in inactive blocks.

mesecons_random/doc/removestone/description.html

@@ -1 +1,2 @@
-Removestones are propably the simplest effectors possible. They simply disappear when powered.
+Removestones are probably the simplest effectors possible. They simply disappear when powered.
+They work in inactive blocks.

mesecons_random/init.lua

@@ -2,6 +2,7 @@
 
 minetest.register_node("mesecons_random:removestone", {
 	tiles = {"jeija_removestone.png"},
+	is_ground_content = false,
 	inventory_image = minetest.inventorycube("jeija_removestone_inv.png"),
 	groups = {cracky=3},
 	description="Removestone",
@@ -10,8 +11,10 @@ minetest.register_node("mesecons_random:removestone", {
 		action_on = function (pos, node)
 			minetest.remove_node(pos)
 			mesecon.on_dignode(pos, node)
+			minetest.check_for_falling(vector.add(pos, vector.new(0, 1, 0)))
 		end
-	}}
+	}},
+	on_blast = mesecon.on_blastnode,
 })
 
 minetest.register_craft({
@@ -28,22 +31,16 @@ minetest.register_craft({
 minetest.register_node("mesecons_random:ghoststone", {
 	description="Ghoststone",
 	tiles = {"jeija_ghoststone.png"},
-	is_ground_content = true,
+	is_ground_content = false,
 	inventory_image = minetest.inventorycube("jeija_ghoststone_inv.png"),
 	groups = {cracky=3},
 	sounds = default.node_sound_stone_defaults(),
 	mesecons = {conductor = {
 		state = mesecon.state.off,
-		rules = { --axes
-			{x = -1, y = 0, z = 0},
-			{x = 1, y = 0, z = 0},
-			{x = 0, y = -1, z = 0},
-			{x = 0, y = 1, z = 0},
-			{x = 0, y = 0, z = -1},
-			{x = 0, y = 0, z = 1},
-		},
+		rules = mesecon.rules.alldirs,
 		onstate = "mesecons_random:ghoststone_active"
-	}}
+	}},
+	on_blast = mesecon.on_blastnode,
 })
 
 minetest.register_node("mesecons_random:ghoststone_active", {
@@ -51,19 +48,13 @@ minetest.register_node("mesecons_random:ghoststone_active", {
 	pointable = false,
 	walkable = false,
 	diggable = false,
+	is_ground_content = false,
 	sunlight_propagates = true,
 	paramtype = "light",
 	drop = "mesecons_random:ghoststone",
 	mesecons = {conductor = {
 		state = mesecon.state.on,
-		rules = {
-			{x = -1, y = 0, z = 0},
-			{x = 1, y = 0, z = 0},
-			{x = 0, y = -1, z = 0},
-			{x = 0, y = 1, z = 0},
-			{x = 0, y = 0, z = -1},
-			{x = 0, y = 0, z = 1},
-		},
+		rules = mesecon.rules.alldirs,
 		offstate = "mesecons_random:ghoststone"
 	}},
 	on_construct = function(pos)
@@ -72,7 +63,8 @@ minetest.register_node("mesecons_random:ghoststone_active", {
 		if (minetest.get_node(shadowpos).name == "air") then
 			minetest.dig_node(shadowpos)
 		end
-	end
+	end,
+	on_blast = mesecon.on_blastnode,
 })
 
 

mesecons_receiver/init.lua

@@ -42,6 +42,7 @@ mesecon.register_node("mesecons_receiver:receiver", {
 	drawtype = "nodebox",
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	sunlight_propagates = true,
 	walkable = false,
 	on_rotate = false,
@@ -55,6 +56,7 @@ mesecon.register_node("mesecons_receiver:receiver", {
 	},
 	groups = {dig_immediate = 3, not_in_creative_inventory = 1},
 	drop = "mesecons:wire_00000000_off",
+	sounds = default.node_sound_defaults(),
 }, {
 	tiles = {
 		"receiver_top_off.png",
@@ -89,6 +91,7 @@ mesecon.register_node("mesecons_receiver:receiver_up", {
 	drawtype = "nodebox",
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	sunlight_propagates = true,
 	walkable = false,
 	on_rotate = false,
@@ -102,6 +105,7 @@ mesecon.register_node("mesecons_receiver:receiver_up", {
 	},
 	groups = {dig_immediate = 3, not_in_creative_inventory = 1},
 	drop = "mesecons:wire_00000000_off",
+	sounds = default.node_sound_defaults(),
 }, {
 	tiles = {"mesecons_wire_off.png"},
 	mesecons = {conductor = {
@@ -132,6 +136,7 @@ mesecon.register_node("mesecons_receiver:receiver_down", {
 	drawtype = "nodebox",
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	sunlight_propagates = true,
 	walkable = false,
 	on_rotate = false,
@@ -145,6 +150,7 @@ mesecon.register_node("mesecons_receiver:receiver_down", {
 	},
 	groups = {dig_immediate = 3, not_in_creative_inventory = 1},
 	drop = "mesecons:wire_00000000_off",
+	sounds = default.node_sound_defaults(),
 }, {
 	tiles = {"mesecons_wire_off.png"},
 	mesecons = {conductor = {
@@ -203,7 +209,6 @@ function mesecon.receiver_place(rcpt_pos)
 	local param2 = minetest.dir_to_facedir(minetest.facedir_to_dir(node.param2))
 
 	if string.find(nn.name, "mesecons:wire_") ~= nil then
-		minetest.dig_node(pos)
 		minetest.set_node(pos, {name = rcvtype, param2 = param2})
 		mesecon.on_placenode(pos, nn)
 	end
@@ -213,7 +218,6 @@ function mesecon.receiver_remove(rcpt_pos, dugnode)
 	local pos = mesecon.receiver_get_pos_from_rcpt(rcpt_pos, dugnode.param2)
 	local nn = minetest.get_node(pos)
 	if string.find(nn.name, "mesecons_receiver:receiver_") ~= nil then
-		minetest.dig_node(pos)
 		local node = {name = "mesecons:wire_00000000_off"}
 		minetest.set_node(pos, node)
 		mesecon.on_placenode(pos, node)

mesecons_solarpanel/doc/solarpanel/description.html

@@ -1 +1,2 @@
-Solar Panel are light receptors: they turn on if there is enough light.
+Solar panels are light receptors: they turn on if there is enough light.
+They only work in active blocks; in inactive blocks they keep their old state.

mesecons_solarpanel/init.lua

@@ -7,7 +7,7 @@ minetest.register_node("mesecons_solarpanel:solar_panel_on", {
 	paramtype = "light",
 	paramtype2 = "wallmounted",
 	walkable = false,
-	is_ground_content = true,
+	is_ground_content = false,
 	node_box = {
 		type = "wallmounted",
 		wall_bottom = { -7/16, -8/16, -7/16,  7/16, -7/16, 7/16 },
@@ -24,8 +24,10 @@ minetest.register_node("mesecons_solarpanel:solar_panel_on", {
 	groups = {dig_immediate=3, not_in_creative_inventory = 1},
 	sounds = default.node_sound_glass_defaults(),
 	mesecons = {receptor = {
-		state = mesecon.state.on
-	}}
+		state = mesecon.state.on,
+		rules = mesecon.rules.wallmounted_get,
+	}},
+	on_blast = mesecon.on_blastnode,
 })
 
 -- Solar Panel
@@ -37,7 +39,7 @@ minetest.register_node("mesecons_solarpanel:solar_panel_off", {
 	paramtype = "light",
 	paramtype2 = "wallmounted",
 	walkable = false,
-	is_ground_content = true,
+	is_ground_content = false,
 	node_box = {
 		type = "wallmounted",
 		wall_bottom = { -7/16, -8/16, -7/16,  7/16, -7/16, 7/16 },
@@ -54,8 +56,10 @@ minetest.register_node("mesecons_solarpanel:solar_panel_off", {
 	description = "Solar Panel",
 	sounds = default.node_sound_glass_defaults(),
 	mesecons = {receptor = {
-		state = mesecon.state.off
-	}}
+		state = mesecon.state.off,
+		rules = mesecon.rules.wallmounted_get,
+	}},
+	on_blast = mesecon.on_blastnode,
 })
 
 minetest.register_craft({
@@ -74,8 +78,9 @@ minetest.register_abm(
 		local light = minetest.get_node_light(pos, nil)
 
 		if light >= 12 then
-			minetest.set_node(pos, {name="mesecons_solarpanel:solar_panel_on", param2=node.param2})
-			mesecon.receptor_on(pos)
+			node.name = "mesecons_solarpanel:solar_panel_on"
+			minetest.swap_node(pos, node)
+			mesecon.receptor_on(pos, mesecon.rules.wallmounted_get(node))
 		end
 	end,
 })
@@ -88,8 +93,9 @@ minetest.register_abm(
 		local light = minetest.get_node_light(pos, nil)
 
 		if light < 12 then
-			minetest.set_node(pos, {name="mesecons_solarpanel:solar_panel_off", param2=node.param2})
-			mesecon.receptor_off(pos)
+			node.name = "mesecons_solarpanel:solar_panel_off"
+			minetest.swap_node(pos, node)
+			mesecon.receptor_off(pos, mesecon.rules.wallmounted_get(node))
 		end
 	end,
 })

mesecons_stickyblocks/init.lua

@@ -3,14 +3,17 @@
 
 -- All sides sticky block
 minetest.register_node("mesecons_stickyblocks:sticky_block_all", {
-	description = "All-sides sticky block",
-	tiles = {"default_grass.png^default_footprint.png"},
-	groups = {dig_immediate=2},
+	-- TODO: Rename to “All-Faces Sticky Block” when other sticky blocks become available
+	description = "Sticky Block",
+	tiles = {"mesecons_stickyblocks_sticky.png"},
+	is_ground_content = false,
+	groups = {choppy=3, oddly_breakable_by_hand=2},
 	mvps_sticky = function (pos, node)
 		local connected = {}
 		for _, r in ipairs(mesecon.rules.alldirs) do
 			table.insert(connected, vector.add(pos, r))
 		end
 		return connected
-	end
+	end,
+	sounds = default.node_sound_wood_defaults(),
 })

mesecons_switch/doc/switch/description.html

@@ -1 +1 @@
-The switch is a receptor. It changes its state as when punched.
+The switch is a receptor. It changes its state when punched.

mesecons_switch/init.lua

@@ -3,6 +3,7 @@
 mesecon.register_node("mesecons_switch:mesecon_switch", {
 	paramtype2="facedir",
 	description="Switch",
+	is_ground_content = false,
 	sounds = default.node_sound_stone_defaults(),
 	on_rightclick = function (pos, node)
 		if(mesecon.flipstate(pos, node) == "on") then

mesecons_torch/doc/torch/description.html

@@ -1 +1,2 @@
 The torch is an inverter, it may take up to 1 second until the signal has passed through. The input is 2 blocks away in the direction of the stick, outputs are around the mesecon glow.
+It doesn't work in an inactive block; it just retains its state until the block becomes active.

mesecons_torch/init.lua

@@ -54,15 +54,18 @@ minetest.register_node("mesecons_torch:mesecon_torch_off", {
 	tiles = {"jeija_torches_off.png", "jeija_torches_off_ceiling.png", "jeija_torches_off_side.png"},
 	inventory_image = "jeija_torches_off.png",
 	paramtype = "light",
+	is_ground_content = false,
 	walkable = false,
 	paramtype2 = "wallmounted",
 	selection_box = torch_selectionbox,
 	groups = {dig_immediate = 3, not_in_creative_inventory = 1},
 	drop = "mesecons_torch:mesecon_torch_on",
+	sounds = default.node_sound_defaults(),
 	mesecons = {receptor = {
 		state = mesecon.state.off,
 		rules = torch_get_output_rules
-	}}
+	}},
+	on_blast = mesecon.on_blastnode,
 })
 
 minetest.register_node("mesecons_torch:mesecon_torch_on", {
@@ -71,17 +74,20 @@ minetest.register_node("mesecons_torch:mesecon_torch_on", {
 	inventory_image = "jeija_torches_on.png",
 	wield_image = "jeija_torches_on.png",
 	paramtype = "light",
+	is_ground_content = false,
 	sunlight_propagates = true,
 	walkable = false,
 	paramtype2 = "wallmounted",
 	selection_box = torch_selectionbox,
 	groups = {dig_immediate=3},
-	light_source = default.LIGHT_MAX-5,
+	light_source = minetest.LIGHT_MAX-5,
 	description="Mesecon Torch",
+	sounds = default.node_sound_defaults(),
 	mesecons = {receptor = {
 		state = mesecon.state.on,
 		rules = torch_get_output_rules
 	}},
+	on_blast = mesecon.on_blastnode,
 })
 
 minetest.register_abm({

mesecons_walllever/init.lua

@@ -8,6 +8,7 @@ mesecon.register_node("mesecons_walllever:wall_lever", {
 	wield_image = "jeija_wall_lever_inv.png",
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	sunlight_propagates = true,
 	walkable = false,
 	selection_box = {

mesecons_wires/doc/mesecon/description.html

@@ -1 +1 @@
-Mesecons are the wires, use them to connect effectors with receptors.
+Mesecons are the wires, use them to connect effectors with receptors. Wiring works through unloaded blocks; they’re loaded when the signal level changes.

mesecons_wires/init.lua

@@ -208,12 +208,15 @@ local function register_wires()
 			wield_image = "mesecons_wire_inv.png",
 			paramtype = "light",
 			paramtype2 = "facedir",
+			is_ground_content = false,
 			sunlight_propagates = true,
 			selection_box = selectionbox,
 			node_box = nodebox,
 			walkable = false,
 			drop = "mesecons:wire_00000000_off",
-			mesecon_wire = true
+			mesecon_wire = true,
+			sounds = default.node_sound_defaults(),
+			on_rotate = false,
 		}, {tiles = tiles_off, mesecons = meseconspec_off, groups = groups_off},
 		{tiles = tiles_on, mesecons = meseconspec_on, groups = groups_on})