initial commit

subgame + mods

mods/mesecons/.gitignore

@@ -0,0 +1 @@
+*~

mods/mesecons/.mesecons_blinkyplant/depends.txt

@@ -0,0 +1 @@
+mesecons

mods/mesecons/.mesecons_blinkyplant/init.lua

@@ -0,0 +1,102 @@
+-- The BLINKY_PLANT
+minetest.register_node("mesecons_blinkyplant:blinky_plant", {
+	drawtype = "plantlike",
+	visual_scale = 1,
+	tiles = {"jeija_blinky_plant_off.png"},
+	inventory_image = "jeija_blinky_plant_off.png",
+	walkable = false,
+	groups = {dig_immediate=3, not_in_creative_inventory=1},
+	drop="mesecons_blinkyplant:blinky_plant_off 1",
+    description="Deactivated Blinky Plant",
+	sounds = default.node_sound_leaves_defaults(),
+	selection_box = {
+		type = "fixed",
+		fixed = {-0.3, -0.5, -0.3, 0.3, -0.5+0.7, 0.3},
+	},
+	mesecons = {receptor = {
+		state = mesecon.state.off
+	}},
+	on_rightclick = function(pos, node, clicker)
+        minetest.set_node(pos, {name="mesecons_blinkyplant:blinky_plant_off"})
+    end	
+})
+
+minetest.register_node("mesecons_blinkyplant:blinky_plant_off", {
+	drawtype = "plantlike",
+	visual_scale = 1,
+	tiles = {"jeija_blinky_plant_off.png"},
+	inventory_image = "jeija_blinky_plant_off.png",
+	paramtype = "light",
+	walkable = false,
+	groups = {dig_immediate=3, mesecon=2},
+    description="Blinky Plant",
+	sounds = default.node_sound_leaves_defaults(),
+	selection_box = {
+		type = "fixed",
+		fixed = {-0.3, -0.5, -0.3, 0.3, -0.5+0.7, 0.3},
+	},
+	mesecons = {receptor = {
+		state = mesecon.state.off
+	}},
+	on_rightclick = function(pos, node, clicker)
+        minetest.set_node(pos, {name="mesecons_blinkyplant:blinky_plant"})
+    end
+})
+
+minetest.register_node("mesecons_blinkyplant:blinky_plant_on", {
+	drawtype = "plantlike",
+	visual_scale = 1,
+	tiles = {"jeija_blinky_plant_on.png"},
+	inventory_image = "jeija_blinky_plant_off.png",
+	paramtype = "light",
+	walkable = false,
+	groups = {dig_immediate=3, not_in_creative_inventory=1, mesecon=2},
+	drop="mesecons_blinkyplant:blinky_plant_off 1",
+	light_source = LIGHT_MAX-7,
+	description = "Blinky Plant",
+	sounds = default.node_sound_leaves_defaults(),
+	selection_box = {
+		type = "fixed",
+		fixed = {-0.3, -0.5, -0.3, 0.3, -0.5+0.7, 0.3},
+	},
+	mesecons = {receptor = {
+		state = mesecon.state.on
+	}},
+	on_rightclick = function(pos, node, clicker)
+		minetest.set_node(pos, {name = "mesecons_blinkyplant:blinky_plant"})
+		mesecon:receptor_off(pos)
+	end
+})
+
+minetest.register_craft({
+	output = "mesecons_blinkyplant:blinky_plant_off 1",
+	recipe = {
+	{"","group:mesecon_conductor_craftable",""},
+	{"","group:mesecon_conductor_craftable",""},
+	{"default:sapling","default:sapling","default:sapling"},
+	}
+})
+
+minetest.register_abm(
+	{nodenames = {"mesecons_blinkyplant:blinky_plant_off"},
+	interval = BLINKY_PLANT_INTERVAL,
+	chance = 1,
+	action = function(pos, node, active_object_count, active_object_count_wider)
+		--minetest.remove_node(pos)
+		minetest.add_node(pos, {name="mesecons_blinkyplant:blinky_plant_on"})
+		nodeupdate(pos)	
+		mesecon:receptor_on(pos)
+	end,
+})
+
+minetest.register_abm({
+	nodenames = {"mesecons_blinkyplant:blinky_plant_on"},
+	interval = BLINKY_PLANT_INTERVAL,
+	chance = 1,
+	action = function(pos, node, active_object_count, active_object_count_wider)
+		--minetest.remove_node(pos)
+		minetest.add_node(pos, {name="mesecons_blinkyplant:blinky_plant_off"})
+		nodeupdate(pos)	
+		mesecon:receptor_off(pos)
+	end,
+})

mods/mesecons/.mesecons_detector/depends.txt

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+mesecons
+mesecons_materials

mods/mesecons/.mesecons_detector/init.lua

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+-- Object detector
+-- Detects players in a certain radius
+-- The radius can be specified in mesecons/settings.lua
+
+local object_detector_make_formspec = function (pos)
+	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 object_detector_on_receive_fields = function(pos, formname, fields)
+	if not fields.scanname or not fields.digiline_channel then return end;
+
+	local meta = minetest.get_meta(pos)
+	meta:set_string("scanname", fields.scanname)
+	meta:set_string("digiline_channel", fields.digiline_channel)
+	object_detector_make_formspec(pos)
+end
+
+-- returns true if player was found, false if not
+local object_detector_scan = function (pos)
+	local objs = minetest.get_objects_inside_radius(pos, OBJECT_DETECTOR_RADIUS)
+	for k, obj in pairs(objs) do
+		local isname = obj:get_player_name() -- "" is returned if it is not a player; "" ~= nil!
+		local scanname = minetest.get_meta(pos):get_string("scanname")
+		if (isname == scanname and isname ~= "") or (isname  ~= "" and scanname == "") then -- player with scanname found or not scanname specified
+			return true
+		end
+	end
+	return false
+end
+
+-- set player name when receiving a digiline signal on a specific channel
+object_detector_digiline = {
+	effector = {
+		action = function (pos, node, channel, msg)
+			local meta = minetest.get_meta(pos)
+			local active_channel = meta:get_string("digiline_channel")
+			if channel == active_channel then
+				meta:set_string("scanname", msg)
+				object_detector_make_formspec(pos)
+			end
+		end,
+	}
+}
+
+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",
+	walkable = true,
+	groups = {cracky=3},
+	description="Player Detector",
+	mesecons = {receptor = {
+		state = mesecon.state.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
+})
+
+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",
+	walkable = true,
+	groups = {cracky=3,not_in_creative_inventory=1},
+	drop = 'mesecons_detector:object_detector_off',
+	mesecons = {receptor = {
+		state = mesecon.state.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
+})
+
+minetest.register_craft({
+	output = 'mesecons_detector:object_detector_off',
+	recipe = {
+		{"default:steel_ingot", "default:steel_ingot", "default:steel_ingot"},
+		{"default:steel_ingot", "mesecons_luacontroller:luacontroller0000", "default:steel_ingot"},
+		{"default:steel_ingot", "group:mesecon_conductor_craftable", "default:steel_ingot"},
+	}
+})
+
+minetest.register_abm(
+	{nodenames = {"mesecons_detector:object_detector_off"},
+	interval = 1.0,
+	chance = 1,
+	action = function(pos)
+		if object_detector_scan(pos) then
+			minetest.swap_node(pos, {name = "mesecons_detector:object_detector_on"})
+			mesecon:receptor_on(pos)
+		end
+	end,
+})
+
+minetest.register_abm(
+	{nodenames = {"mesecons_detector:object_detector_on"},
+	interval = 1.0,
+	chance = 1,
+	action = function(pos)
+		if not object_detector_scan(pos) then
+			minetest.swap_node(pos, {name = "mesecons_detector:object_detector_off"})
+			mesecon:receptor_off(pos)
+		end
+	end,
+})

mods/mesecons/.mesecons_gates/depends.txt

@@ -0,0 +1,6 @@
+mesecons
+mesecons_microcontroller
+mesecons_delayer
+
+mesecons_torch
+mesecons_materials

mods/mesecons/.mesecons_gates/init.lua

@@ -0,0 +1,222 @@
+function gate_rotate_rules(node)
+	for rotations = 0, node.param2 - 1 do
+		rules = mesecon:rotate_rules_left(rules)
+	end
+	return rules
+end
+
+function gate_get_output_rules(node)
+	rules = {{x=1, y=0, z=0}}
+	return gate_rotate_rules(node)
+end
+
+function gate_get_input_rules_oneinput(node)
+	rules = {{x=-1, y=0, z=0}, {x=1, y=0, z=0}}
+	return gate_rotate_rules(node)
+end
+
+function gate_get_input_rules_twoinputs(node)
+	rules = {
+	{x=0, y=0, z=1},
+	{x=0, y=0, z=-1},
+	{x=1, y=0, z=0}}
+	return gate_rotate_rules(node)
+end
+
+function update_gate(pos, node, rulename, newstate)
+	yc_update_real_portstates(pos, node, rulename, newstate)
+	gate = get_gate(pos)
+	L = rotate_ports(
+		yc_get_real_portstates(pos),
+		minetest.get_node(pos).param2
+	)
+	if gate == "diode" then
+		set_gate(pos, L.a)
+	elseif gate == "not" then
+		set_gate(pos, not L.a)
+	elseif gate == "nand" then
+		set_gate(pos, not(L.b and L.d))
+	elseif gate == "and" then
+		set_gate(pos, L.b and L.d)
+	elseif gate == "xor" then
+		set_gate(pos, (L.b and not L.d) or (not L.b and L.d))
+	end
+end
+
+function set_gate(pos, on)
+	gate = get_gate(pos)
+	local meta = minetest.get_meta(pos)
+	if on ~= gate_state(pos) then
+		if mesecon.do_overheat(pos) then
+			pop_gate(pos)
+		else
+			local node = minetest.get_node(pos)
+			if on then
+				minetest.swap_node(pos, {name = "mesecons_gates:"..gate.."_on", param2=node.param2})
+				mesecon:receptor_on(pos,
+				gate_get_output_rules(node))
+			else
+				minetest.swap_node(pos, {name = "mesecons_gates:"..gate.."_off", param2=node.param2})
+				mesecon:receptor_off(pos,
+				gate_get_output_rules(node))
+			end
+		end
+	end
+end
+
+function get_gate(pos)
+	return minetest.registered_nodes[minetest.get_node(pos).name].mesecons_gate
+end
+
+function gate_state(pos)
+	name = minetest.get_node(pos).name
+	return string.find(name, "_on") ~= nil
+end
+
+function pop_gate(pos)
+	gate = get_gate(pos)
+	minetest.remove_node(pos)
+	minetest.after(0.2, function (pos)
+		mesecon:receptor_off(pos, mesecon.rules.flat)
+	end , pos) -- wait for pending parsings
+	minetest.add_item(pos, "mesecons_gates:"..gate.."_off")
+end
+
+function rotate_ports(L, param2)
+	for rotations=0, param2-1 do
+		port = L.a
+		L.a = L.b
+		L.b = L.c
+		L.c = L.d
+		L.d = port
+	end
+	return L
+end
+
+gates = {
+{name = "diode", inputnumber = 1}, 
+{name = "not"  , inputnumber = 1}, 
+{name = "nand" , inputnumber = 2},
+{name = "and"  , inputnumber = 2},
+{name = "xor"  , inputnumber = 2}}
+
+local onoff, drop, nodename, description, groups
+for _, gate in ipairs(gates) do
+	if gate.inputnumber == 1 then
+		get_rules = gate_get_input_rules_oneinput
+	elseif gate.inputnumber == 2 then
+		get_rules = gate_get_input_rules_twoinputs
+	end
+	for on = 0, 1 do
+		nodename = "mesecons_gates:"..gate.name
+		if on == 1 then
+			onoff = "on"
+			drop = nodename.."_off"
+			nodename = nodename.."_"..onoff
+			description = "You hacker you!"
+			groups = {dig_immediate=2, not_in_creative_inventory=1, overheat = 1}
+		else
+			onoff = "off"
+			drop = nil
+			nodename = nodename.."_"..onoff
+			description = gate.name.." Gate"
+			groups = {dig_immediate=2, overheat = 1}
+		end
+
+		tiles = "jeija_microcontroller_bottom.png^"..
+			"jeija_gate_"..onoff..".png^"..
+			"jeija_gate_"..gate.name..".png"
+
+		node_box = {
+			type = "fixed",
+			fixed = {
+				{-8/16, -8/16, -8/16, 8/16, -7/16, 8/16 },
+			},
+		}
+
+		local mesecon_state
+		if on == 1 then
+			mesecon_state = mesecon.state.on
+		else
+			mesecon_state = mesecon.state.off
+		end
+
+		minetest.register_node(nodename, {
+			description = description,
+			paramtype = "light",
+			paramtype2 = "facedir",
+			drawtype = "nodebox",
+			tiles = {tiles},
+			inventory_image = tiles,
+			selection_box = node_box,
+			node_box = node_box,
+			walkable = true,
+			on_construct = function(pos)
+				local meta = minetest.get_meta(pos)
+				update_gate(pos)
+			end,
+			groups = groups,
+			drop = drop,
+			sounds = default.node_sound_stone_defaults(),
+			mesecons_gate = gate.name,
+			mesecons =
+			{
+				receptor =
+				{
+					state = mesecon_state,
+					rules = gate_get_output_rules
+				},
+				effector =
+				{
+					rules = get_rules,
+					action_change = update_gate
+				}
+			}
+		})
+	end
+end
+
+minetest.register_craft({
+	output = 'mesecons_gates:diode_off',
+	recipe = {
+		{'', '', ''},
+		{'mesecons:mesecon', 'mesecons_torch:mesecon_torch_on', 'mesecons_torch:mesecon_torch_on'},
+		{'', '', ''},
+	},
+})
+
+minetest.register_craft({
+	output = 'mesecons_gates:not_off',
+	recipe = {
+		{'', '', ''},
+		{'mesecons:mesecon', 'mesecons_torch:mesecon_torch_on', 'mesecons:mesecon'},
+		{'', '', ''},
+	},
+})
+
+minetest.register_craft({
+	output = 'mesecons_gates:and_off',
+	recipe = {
+		{'mesecons:mesecon', '', ''},
+		{'', 'mesecons_materials:silicon', 'mesecons:mesecon'},
+		{'mesecons:mesecon', '', ''},
+	},
+})
+
+minetest.register_craft({
+	output = 'mesecons_gates:nand_off',
+	recipe = {
+		{'mesecons:mesecon', '', ''},
+		{'', 'mesecons_materials:silicon', 'mesecons_torch:mesecon_torch_on'},
+		{'mesecons:mesecon', '', ''},
+	},
+})
+
+minetest.register_craft({
+	output = 'mesecons_gates:xor_off',
+	recipe = {
+		{'mesecons:mesecon', '', ''},
+		{'', 'mesecons_materials:silicon', 'mesecons_materials:silicon'},
+		{'mesecons:mesecon', '', ''},
+	},
+})

mods/mesecons/.mesecons_luacontroller/depends.txt

@@ -0,0 +1 @@
+mesecons

mods/mesecons/.mesecons_luacontroller/init.lua

@@ -0,0 +1,560 @@
+-- Reference
+-- ports = get_real_portstates(pos): gets if inputs are powered from outside
+-- newport = merge_portstates(state1, state2): just does result = state1 or state2 for every port
+-- action_setports(pos, rule, state): activates/deactivates the mesecons according to the portstates (helper for action)
+-- action(pos, ports): Applies new portstates to a luacontroller at pos
+-- lc_update(pos): updates the controller at pos by executing the code
+-- reset_meta (pos, code, errmsg): performs a software-reset, installs new code and prints error messages
+-- reset (pos): performs a hardware reset, turns off all ports
+--
+-- The Sandbox
+-- The whole code of the controller runs in a sandbox,
+-- a very restricted environment.
+-- However, as this does not prevent you from using e.g. loops,
+-- we need to check for these prohibited commands first.
+-- Actually the only way to damage the server is to
+-- use too much memory from the sandbox.
+-- You can add more functions to the environment
+-- (see where local env is defined)
+-- Something nice to play is is appending minetest. to it.
+
+local BASENAME = "mesecons_luacontroller:luacontroller"
+
+local rules = {}
+rules.a = {x = -1, y = 0, z =  0, name="A"}
+rules.b = {x =  0, y = 0, z =  1, name="B"}
+rules.c = {x =  1, y = 0, z =  0, name="C"}
+rules.d = {x =  0, y = 0, z = -1, name="D"}
+
+------------------
+-- Action stuff --
+------------------
+-- These helpers are required to set the portstates of the luacontroller
+
+function lc_update_real_portstates(pos, rulename, newstate)
+	local meta = minetest.get_meta(pos)
+	if rulename == nil then
+		meta:set_int("real_portstates", 1)
+		return
+	end
+	local n = meta:get_int("real_portstates") - 1
+	if n < 0 then
+		legacy_update_ports(pos)
+		n = meta:get_int("real_portstates") - 1
+	end
+	local L = {}
+	for i = 1, 4 do
+		L[i] = n%2
+		n = math.floor(n/2)
+	end
+	if rulename.x == nil then
+		for _, rname in ipairs(rulename) do
+			local port = ({4, 1, nil, 3, 2})[rname.x+2*rname.z+3]
+			L[port] = (newstate == "on") and 1 or 0
+		end
+	else
+		local port = ({4, 1, nil, 3, 2})[rulename.x+2*rulename.z+3]
+		L[port] = (newstate == "on") and 1 or 0
+	end
+	meta:set_int("real_portstates", 1 + L[1] + 2*L[2] + 4*L[3] + 8*L[4])
+end
+
+local get_real_portstates = function(pos) -- determine if ports are powered (by itself or from outside)
+	local meta = minetest.get_meta(pos)
+	local L = {}
+	local n = meta:get_int("real_portstates") - 1
+	if n < 0 then
+		return legacy_update_ports(pos)
+	end
+	for _, index in ipairs({"a", "b", "c", "d"}) do
+		L[index] = ((n%2) == 1)
+		n = math.floor(n/2)
+	end
+	return L
+end
+
+local merge_portstates = function (ports, vports)
+	local npo = {a=false, b=false, c=false, d=false}
+	npo.a = vports.a or ports.a
+	npo.b = vports.b or ports.b
+	npo.c = vports.c or ports.c
+	npo.d = vports.d or ports.d
+	return npo
+end
+
+local generate_name = function (ports)
+	local overwrite = overwrite or {}
+	local d = ports.d and 1 or 0
+	local c = ports.c and 1 or 0
+	local b = ports.b and 1 or 0
+	local a = ports.a and 1 or 0
+	return BASENAME..d..c..b..a
+end
+
+local setport = function (pos, rule, state)
+	if state then
+		mesecon:receptor_on(pos, {rule})
+	else
+		mesecon:receptor_off(pos, {rule})
+	end
+end
+
+local action = function (pos, ports)
+	local node = minetest.get_node(pos)
+	local name = node.name
+	local vports = minetest.registered_nodes[name].virtual_portstates
+	local newname = generate_name(ports)
+
+	if name ~= newname and vports then
+		local rules_on  = {}
+		local rules_off = {}
+
+		minetest.swap_node(pos, {name = newname, param2 = node.param2})
+
+		if ports.a ~= vports.a then setport(pos, rules.a, ports.a) end
+		if ports.b ~= vports.b then setport(pos, rules.b, ports.b) end
+		if ports.c ~= vports.c then setport(pos, rules.c, ports.c) end
+		if ports.d ~= vports.d then setport(pos, rules.d, ports.d) end
+	end
+end
+
+--------------------
+-- Overheat stuff --
+--------------------
+
+local overheat_off = function(pos)
+	mesecon:receptor_off(pos, mesecon.rules.flat)
+end
+
+-------------------
+-- Parsing stuff --
+-------------------
+
+local code_prohibited = function(code)
+	-- Clean code
+	local prohibited = {"while", "for", "repeat", "until", "function", "goto"}
+	for _, p in ipairs(prohibited) do
+		if string.find(code, p) then
+			return "Prohibited command: "..p
+		end
+	end
+end
+
+local safe_print = function(param)
+	print(dump(param))
+end
+
+deep_copy = function(original, visited) --deep copy that removes functions
+	visited = visited or {}
+	if visited[original] ~= nil then --already visited this node
+		return visited[original]
+	end
+	if type(original) == 'table' then --nested table
+		local copy = {}
+		visited[original] = copy
+		for key, value in next, original, nil do
+			copy[deep_copy(key, visited)] = deep_copy(value, visited)
+		end
+		setmetatable(copy, deep_copy(getmetatable(original), visited))
+		return copy
+	elseif type(original) == 'function' then --ignore functions
+		return nil
+	else --by-value type
+		return original
+	end
+end
+
+local safe_serialize = function(value)
+	return minetest.serialize(deep_copy(value))
+end
+
+mesecon.queue:add_function("lc_interrupt", function (pos, iid, luac_id)
+	-- There is no luacontroller anymore / it has been reprogrammed / replaced
+	if (minetest.get_meta(pos):get_int("luac_id") ~= luac_id) then return end
+	lc_update(pos, {type="interrupt", iid = iid})
+end)
+
+local getinterrupt = function(pos)
+	local interrupt = function (time, iid) -- iid = interrupt id
+		if type(time) ~= "number" then return end
+		luac_id = minetest.get_meta(pos):get_int("luac_id")
+		mesecon.queue:add_action(pos, "lc_interrupt", {iid, luac_id}, time, iid, 1)
+	end
+	return interrupt
+end
+
+local getdigiline_send = function(pos)
+	if not digiline then return end
+	-- Send messages on next serverstep
+	return function(channel, msg)
+		minetest.after(0, function()
+			digiline:receptor_send(pos, digiline.rules.default, channel, msg)
+		end)
+	end
+end
+
+local create_environment = function(pos, mem, event)
+	-- Gather variables for the environment
+	local vports = minetest.registered_nodes[minetest.get_node(pos).name].virtual_portstates
+	vports = {a = vports.a, b = vports.b, c = vports.c, d = vports.d}
+	local rports = get_real_portstates(pos)
+
+	return {
+			print = safe_print,
+			pin = merge_portstates(vports, rports),
+			port = vports,
+			interrupt = getinterrupt(pos),
+			digiline_send = getdigiline_send(pos),
+			mem = mem,
+			tostring = tostring,
+			tonumber = tonumber,
+			heat = minetest.get_meta(pos):get_int("heat"),
+			heat_max = OVERHEAT_MAX,
+			string = {
+				byte = string.byte,
+				char = string.char,
+				find = string.find,
+				format = string.format,
+				gmatch = string.gmatch,
+				gsub = string.gsub,
+				len = string.len,
+				lower = string.lower,
+				upper = string.upper,
+				match = string.match,
+				rep = string.rep,
+				reverse = string.reverse,
+				sub = string.sub,
+			},
+			math = {
+				abs = math.abs,
+				acos = math.acos,
+				asin = math.asin,
+				atan = math.atan,
+				atan2 = math.atan2,
+				ceil = math.ceil,
+				cos = math.cos,
+				cosh = math.cosh,
+				deg = math.deg,
+				exp = math.exp,
+				floor = math.floor,
+				fmod = math.fmod,
+				frexp = math.frexp,
+				huge = math.huge,
+				ldexp = math.ldexp,
+				log = math.log,
+				log10 = math.log10,
+				max = math.max,
+				min = math.min,
+				modf = math.modf,
+				pi = math.pi,
+				pow = math.pow,
+				rad = math.rad,
+				random = math.random,
+				sin = math.sin,
+				sinh = math.sinh,
+				sqrt = math.sqrt,
+				tan = math.tan,
+				tanh = math.tanh,
+			},
+			table = {
+				insert = table.insert,
+				maxn = table.maxn,
+				remove = table.remove,
+				sort = table.sort
+			},
+			event = event,
+	}
+end
+
+local create_sandbox = function (code, env)
+	-- Create Sandbox
+	if code:byte(1) == 27 then
+		return _, "You Hacker You! Don't use binary code!"
+	end
+	f, msg = loadstring(code)
+	if not f then return _, msg end
+	setfenv(f, env)
+	return f
+end
+
+local lc_overheat = function (pos, meta)
+	if mesecon.do_overheat(pos) then -- if too hot
+		local node = minetest.get_node(pos)
+		minetest.swap_node(pos, {name = BASENAME.."_burnt", param2 = node.param2})
+		minetest.after(0.2, overheat_off, pos) -- wait for pending operations
+		return true
+	end
+end
+
+local load_memory = function(meta)
+	return minetest.deserialize(meta:get_string("lc_memory")) or {}
+end
+
+local save_memory = function(meta, mem)
+	meta:set_string("lc_memory", safe_serialize(mem))
+end
+
+local ports_invalid = function (var)
+	if type(var) == "table" then
+		return false
+	end
+	return "The ports you set are invalid"
+end
+
+----------------------
+-- Parsing function --
+----------------------
+
+lc_update = function (pos, event)
+	local meta = minetest.get_meta(pos)
+	if lc_overheat(pos) then return end
+
+	-- load code & mem from memory
+	local mem  = load_memory(meta)
+	local code = meta:get_string("code")
+
+	-- make sure code is ok and create environment
+	local prohibited = code_prohibited(code)
+	if prohibited then return prohibited end
+	local env = create_environment(pos, mem, event)
+
+	-- create the sandbox and execute code
+	local chunk, msg = create_sandbox (code, env)
+	if not chunk then return msg end
+	local success, msg = pcall(f)
+	if not success then return msg end
+	if ports_invalid(env.port) then return ports_invalid(env.port) end
+
+	save_memory(meta, mem)
+
+	-- Actually set the ports
+	action(pos, env.port)
+end
+
+local reset_meta = function(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, 1000000))
+end
+
+local reset = function (pos)
+	action(pos, {a=false, b=false, c=false, d=false})
+end
+
+--        ______
+--       |
+--       |
+--       |        __       ___  _   __         _  _
+-- |   | |       |  | |\ |  |  |_| |  | |  |  |_ |_|
+-- |___| |______ |__| | \|  |  | \ |__| |_ |_ |_ |\
+-- |
+-- |
+--
+
+-----------------------
+-- Node Registration --
+-----------------------
+
+local output_rules={}
+local input_rules={}
+
+local nodebox = {
+		type = "fixed",
+		fixed = {
+			{ -8/16, -8/16, -8/16, 8/16, -7/16, 8/16 }, -- bottom slab
+			{ -5/16, -7/16, -5/16, 5/16, -6/16, 5/16 }, -- circuit board
+			{ -3/16, -6/16, -3/16, 3/16, -5/16, 3/16 }, -- IC
+		}
+	}
+
+local selectionbox = {
+		type = "fixed",
+		fixed = { -8/16, -8/16, -8/16, 8/16, -5/16, 8/16 },
+	}
+
+local digiline = {
+	receptor = {},
+	effector = {
+		action = function (pos, node, channel, msg)
+			lc_update (pos, {type = "digiline", channel = channel, msg = msg})
+		end
+	}
+}
+
+for a = 0, 1 do -- 0 = off; 1 = on
+for b = 0, 1 do
+for c = 0, 1 do
+for d = 0, 1 do
+
+local cid = tostring(d)..tostring(c)..tostring(b)..tostring(a)
+local nodename = BASENAME..cid
+local top = "jeija_luacontroller_top.png"
+if a == 1 then
+	top = top.."^jeija_luacontroller_LED_A.png"
+end
+if b == 1 then
+	top = top.."^jeija_luacontroller_LED_B.png"
+end
+if c == 1 then
+	top = top.."^jeija_luacontroller_LED_C.png"
+end
+if d == 1 then
+	top = top.."^jeija_luacontroller_LED_D.png"
+end
+
+if a + b + c + d ~= 0 then
+	groups = {dig_immediate=2, not_in_creative_inventory=1, overheat = 1}
+else
+	groups = {dig_immediate=2, overheat = 1}
+end
+
+output_rules[cid] = {}
+input_rules[cid] = {}
+if (a == 1) then table.insert(output_rules[cid], rules.a) end
+if (b == 1) then table.insert(output_rules[cid], rules.b) end
+if (c == 1) then table.insert(output_rules[cid], rules.c) end
+if (d == 1) then table.insert(output_rules[cid], rules.d) end
+
+if (a == 0) then table.insert(input_rules[cid], rules.a) end
+if (b == 0) then table.insert(input_rules[cid], rules.b) end
+if (c == 0) then table.insert(input_rules[cid], rules.c) end
+if (d == 0) then table.insert(input_rules[cid], rules.d) end
+
+local mesecons = {
+	effector =
+	{
+		rules = input_rules[cid],
+		action_change = function (pos, _, rulename, newstate)
+			lc_update_real_portstates(pos, rulename, newstate)
+			lc_update(pos, {type=newstate,  pin=rulename})
+		end,
+	},
+	receptor =
+	{
+		state = mesecon.state.on,
+		rules = output_rules[cid]
+	}
+}
+
+minetest.register_node(nodename, {
+	description = "Luacontroller",
+	drawtype = "nodebox",
+	tiles = {
+		top,
+		"jeija_microcontroller_bottom.png",
+		"jeija_microcontroller_sides.png",
+		"jeija_microcontroller_sides.png",
+		"jeija_microcontroller_sides.png",
+		"jeija_microcontroller_sides.png"
+		},
+
+	inventory_image = top,
+	paramtype = "light",
+	groups = groups,
+	drop = BASENAME.."0000",
+	sunlight_propagates = true,
+	selection_box = selectionbox,
+	node_box = nodebox,
+	on_construct = reset_meta,
+	on_receive_fields = function(pos, formname, fields)
+		if not fields.program then
+			return
+		end
+		reset(pos)
+		reset_meta(pos, fields.code)
+		local err = lc_update(pos, {type="program"})
+		if err then
+			print(err)
+			reset_meta(pos, fields.code, err)
+		end
+	end,
+	on_timer = handle_timer,
+	sounds = default.node_sound_stone_defaults(),
+	mesecons = mesecons,
+	digiline = digiline,
+	virtual_portstates = {	a = a == 1, -- virtual portstates are
+				b = b == 1, -- the ports the the
+				c = c == 1, -- controller powers itself
+				d = d == 1},-- so those that light up
+	after_dig_node = function (pos, node)
+		mesecon:receptor_off(pos, output_rules)
+	end,
+	is_luacontroller = true,
+})
+end
+end
+end
+end
+
+------------------------------
+-- overheated luacontroller --
+------------------------------
+
+local mesecons_burnt = {
+	effector =
+	{
+		rules = mesecon.rules.flat,
+		action_change = function (pos, _, rulename, newstate)
+			-- only update portstates when changes are triggered
+			lc_update_real_portstates(pos, rulename, newstate)
+		end
+	}
+}
+
+minetest.register_node(BASENAME .. "_burnt", {
+	drawtype = "nodebox",
+	tiles = {
+		"jeija_luacontroller_burnt_top.png",
+		"jeija_microcontroller_bottom.png",
+		"jeija_microcontroller_sides.png",
+		"jeija_microcontroller_sides.png",
+		"jeija_microcontroller_sides.png",
+		"jeija_microcontroller_sides.png"
+	},
+	inventory_image = "jeija_luacontroller_burnt_top.png",
+	paramtype = "light",
+	groups = {dig_immediate=2, not_in_creative_inventory=1},
+	drop = BASENAME.."0000",
+	sunlight_propagates = true,
+	selection_box = selectionbox,
+	node_box = nodebox,
+	on_construct = reset_meta,
+	on_receive_fields = function(pos, formname, fields)
+		if fields.quit then
+			return
+		end
+		reset(pos)
+		reset_meta(pos, fields.code)
+		local err = lc_update(pos, {type="program"})
+		if err then
+			print(err)
+			reset_meta(pos, fields.code, err)
+		end
+	end,
+	sounds = default.node_sound_stone_defaults(),
+	virtual_portstates = {a = false, b = false, c = false, d = false},
+	mesecons = mesecons_burnt,
+})
+
+------------------------
+-- Craft Registration --
+------------------------
+
+minetest.register_craft({
+	output = BASENAME.."0000 2",
+	recipe = {
+		{'mesecons_materials:silicon', 'mesecons_materials:silicon', 'group:mesecon_conductor_craftable'},
+		{'mesecons_materials:silicon', 'mesecons_materials:silicon', 'group:mesecon_conductor_craftable'},
+		{'group:mesecon_conductor_craftable', 'group:mesecon_conductor_craftable', ''},
+	}
+})
+

mods/mesecons/.mesecons_microcontroller/depends.txt

@@ -0,0 +1 @@
+mesecons

mods/mesecons/.mesecons_microcontroller/init.lua

@@ -0,0 +1,696 @@
+EEPROM_SIZE = 255
+
+for a = 0, 1 do
+for b = 0, 1 do
+for c = 0, 1 do
+for d = 0, 1 do
+local nodename = "mesecons_microcontroller:microcontroller"..tostring(d)..tostring(c)..tostring(b)..tostring(a)
+local top = "jeija_microcontroller_top.png"
+if tostring(a) == "1" then
+	top = top.."^jeija_microcontroller_LED_A.png"
+end
+if tostring(b) == "1" then
+	top = top.."^jeija_microcontroller_LED_B.png"
+end
+if tostring(c) == "1" then
+	top = top.."^jeija_microcontroller_LED_C.png"
+end
+if tostring(d) == "1" then
+	top = top.."^jeija_microcontroller_LED_D.png"
+end
+if tostring(d)..tostring(c)..tostring(b)..tostring(a) ~= "0000" then
+	groups = {dig_immediate=2, not_in_creative_inventory=1, mesecon = 3, overheat = 1}
+else
+	groups = {dig_immediate=2, mesecon = 3, overheat = 1}
+end
+local rules={}
+if (a == 1) then table.insert(rules, {x = -1, y = 0, z =  0}) end
+if (b == 1) then table.insert(rules, {x =  0, y = 0, z =  1}) end
+if (c == 1) then table.insert(rules, {x =  1, y = 0, z =  0}) end
+if (d == 1) then table.insert(rules, {x =  0, y = 0, z = -1}) end
+
+local input_rules={}
+if (a == 0) then table.insert(input_rules, {x = -1, y = 0, z =  0, name = "A"}) end
+if (b == 0) then table.insert(input_rules, {x =  0, y = 0, z =  1, name = "B"}) end
+if (c == 0) then table.insert(input_rules, {x =  1, y = 0, z =  0, name = "C"}) end
+if (d == 0) then table.insert(input_rules, {x =  0, y = 0, z = -1, name = "D"}) end
+mesecon:add_rules(nodename, rules)
+
+local mesecons = {effector =
+{
+	rules = input_rules,
+	action_change = function (pos, node, rulename, newstate)
+		yc_update_real_portstates(pos, node, rulename, newstate)
+		update_yc(pos)
+	end
+}}
+if nodename ~= "mesecons_microcontroller:microcontroller0000" then
+	mesecons.receptor = {
+		state = mesecon.state.on,
+		rules = rules
+	}
+end
+
+minetest.register_node(nodename, {
+	description = "Microcontroller",
+	drawtype = "nodebox",
+	tiles = {
+		top,
+		"jeija_microcontroller_bottom.png",
+		"jeija_microcontroller_sides.png",
+		"jeija_microcontroller_sides.png",
+		"jeija_microcontroller_sides.png",
+		"jeija_microcontroller_sides.png"
+		},
+
+	sunlight_propagates = true,
+	paramtype = "light",
+	walkable = true,
+	groups = groups,
+	drop = "mesecons_microcontroller:microcontroller0000 1",
+	selection_box = {
+		type = "fixed",
+		fixed = { -8/16, -8/16, -8/16, 8/16, -5/16, 8/16 },
+	},
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{ -8/16, -8/16, -8/16, 8/16, -7/16, 8/16 }, -- bottom slab
+			{ -5/16, -7/16, -5/16, 5/16, -6/16, 5/16 }, -- circuit board
+			{ -3/16, -6/16, -3/16, 3/16, -5/16, 3/16 }, -- IC
+		}
+	},
+	on_construct = function(pos)
+		local meta = minetest.get_meta(pos)
+		meta:set_string("code", "")
+		meta:set_string("formspec", "size[9,2.5]"..
+			"field[0.256,-0.2;9,2;code;Code:;]"..
+			"button[0  ,0.2;1.5,3;band;AND]"..
+			"button[1.5,0.2;1.5,3;bxor;XOR]"..
+			"button[3  ,0.2;1.5,3;bnot;NOT]"..
+			"button[4.5,0.2;1.5,3;bnand;NAND]"..
+			"button[6  ,0.2;1.5,3;btflop;T-Flop]"..
+			"button[7.5,0.2;1.5,3;brsflop;RS-Flop]"..
+			"button_exit[3.5,1;2,3;program;Program]")
+		meta:set_string("infotext", "Unprogrammed Microcontroller")
+		local r = ""
+		for i=1, EEPROM_SIZE+1 do r=r.."0" end --Generate a string with EEPROM_SIZE*"0"
+		meta:set_string("eeprom", r)
+	end,
+	on_receive_fields = function(pos, formanme, fields, sender)
+		local meta = minetest.get_meta(pos)
+		if fields.band then
+			fields.code = "sbi(C, A&B) :A and B are inputs, C is output"
+		elseif fields.bxor then
+			fields.code = "sbi(C, A~B) :A and B are inputs, C is output"
+		elseif fields.bnot then
+			fields.code = "sbi(B, !A) :A is input, B is output"
+		elseif fields.bnand then
+			fields.code = "sbi(C, !A|!B) :A and B are inputs, C is output"
+		elseif fields.btflop then
+			fields.code = "if(A)sbi(1,1);if(!A&#1)sbi(B,!B)sbi(1,0); if(C)off(B,1); :A is input, B is output (Q), C is reset, toggles with falling edge"
+		elseif fields.brsflop then
+			fields.code = "if(A)on(C);if(B)off(C); :A is S (Set), B is R (Reset), C is output (R dominates)"
+		end
+		if fields.code == nil then return end
+
+		meta:set_string("code", fields.code)
+		meta:set_string("formspec", "size[9,2.5]"..
+		"field[0.256,-0.2;9,2;code;Code:;"..minetest.formspec_escape(fields.code).."]"..
+		"button[0  ,0.2;1.5,3;band;AND]"..
+		"button[1.5,0.2;1.5,3;bxor;XOR]"..
+		"button[3  ,0.2;1.5,3;bnot;NOT]"..
+		"button[4.5,0.2;1.5,3;bnand;NAND]"..
+		"button[6  ,0.2;1.5,3;btflop;T-Flop]"..
+		"button[7.5,0.2;1.5,3;brsflop;RS-Flop]"..
+		"button_exit[3.5,1;2,3;program;Program]")
+		meta:set_string("infotext", "Programmed Microcontroller")
+		yc_reset (pos)
+		update_yc(pos)
+	end,
+	sounds = default.node_sound_stone_defaults(),
+	mesecons = mesecons,
+	after_dig_node = function (pos, node)
+		rules = mesecon:get_rules(node.name)
+		mesecon:receptor_off(pos, rules)
+	end,
+})
+end
+end
+end
+end
+
+minetest.register_craft({
+	output = 'craft "mesecons_microcontroller:microcontroller0000" 2',
+	recipe = {
+		{'mesecons_materials:silicon', 'mesecons_materials:silicon', 'group:mesecon_conductor_craftable'},
+		{'mesecons_materials:silicon', 'mesecons_materials:silicon', 'group:mesecon_conductor_craftable'},
+		{'group:mesecon_conductor_craftable', 'group:mesecon_conductor_craftable', ''},
+	}
+})
+
+function yc_reset(pos)
+	yc_action(pos, {a=false, b=false, c=false, d=false})
+	local meta = minetest.get_meta(pos)
+	meta:set_int("afterid", 0)
+	local r = ""
+	for i=1, EEPROM_SIZE+1 do r=r.."0" end --Generate a string with EEPROM_SIZE*"0"
+	meta:set_string("eeprom", r)
+end
+
+function update_yc(pos)
+	local meta = minetest.get_meta(pos)
+
+	if (mesecon.do_overheat(pos)) then
+		minetest.remove_node(pos)
+		minetest.after(0.2, function (pos)
+			mesecon:receptor_off(pos, mesecon.rules.flat)
+		end , pos) -- wait for pending parsings
+		minetest.add_item(pos, "mesecons_microcontroller:microcontroller0000")
+	end
+
+	local code = meta:get_string("code")
+	code = yc_code_remove_commentary(code)
+	code = string.gsub(code, " ", "")	--Remove all spaces
+	code = string.gsub(code, "	", "")	--Remove all tabs
+	if yc_parsecode(code, pos) == nil then
+		meta:set_string("infotext", "Code not valid!\n"..code)
+	else
+		meta:set_string("infotext", "Working Microcontroller\n"..code)
+	end
+end
+
+
+--Code Parsing
+function yc_code_remove_commentary(code)
+	is_string = false
+	for i = 1, #code do
+		if code:sub(i, i) == '"' then
+			is_string = not is_string --toggle is_string
+		elseif code:sub(i, i) == ":" and not is_string then
+			return code:sub(1, i-1)
+		end
+	end
+	return code
+end
+
+function yc_parsecode(code, pos)
+	local meta = minetest.get_meta(pos)
+	local endi = 1
+	local Lreal = yc_get_real_portstates(pos)
+	local Lvirtual = yc_get_virtual_portstates(pos)
+	if Lvirtual == nil then return nil end
+	local c
+	local eeprom = meta:get_string("eeprom")
+	while true do
+		command, endi = parse_get_command(code, endi)
+		if command == nil then return nil end
+		if command == true then break end --end of code
+		if command == "if" then
+			r, endi = yc_command_if(code, endi, yc_merge_portstates(Lreal, Lvirtual), eeprom)
+			if r == nil then return nil end
+			if r == true then  -- nothing
+			elseif r == false then
+				endi_new = yc_skip_to_else (code, endi)
+				if endi_new == nil then --else > not found
+					endi = yc_skip_to_endif(code, endi)
+				else
+					endi = endi_new
+				end
+				if endi == nil then return nil end
+			end
+		else
+			params, endi = parse_get_params(code, endi)
+			if params  == nil then return nil end
+		end
+		if command == "on" then
+			L = yc_command_on (params, Lvirtual)
+		elseif command == "off" then
+			L = yc_command_off(params, Lvirtual)
+		elseif command == "print" then
+			local su = yc_command_print(params, eeprom, yc_merge_portstates(Lreal, Lvirtual))
+			if su ~= true then return nil end
+		elseif command == "after" then
+			local su = yc_command_after(params, pos)
+			if su == nil then return nil end
+		elseif command == "sbi" then
+			new_eeprom, Lvirtual = yc_command_sbi (params, eeprom, yc_merge_portstates(Lreal, Lvirtual), Lvirtual)
+			if new_eeprom == nil then return nil
+			else eeprom = new_eeprom end
+		elseif command == "if" then --nothing
+		else
+			return nil
+		end
+		if Lvirtual == nil then return nil end
+		if eeprom == nil then return nil else
+		minetest.get_meta(pos):set_string("eeprom", eeprom) end
+	end
+	yc_action(pos, Lvirtual)
+	return true
+end
+
+function parse_get_command(code, starti)
+	i = starti
+	s = nil
+	while s ~= "" do
+		s = string.sub(code, i, i)
+		if s == "(" then
+			return string.sub(code, starti, i-1), i + 1 -- i: ( i+1 after (
+		end
+		if s == ";" and starti == i then 
+			starti = starti + 1
+			i = starti
+		elseif s == ">" then
+			starti = yc_skip_to_endif(code, starti)
+			if starti == nil then return nil end
+			i = starti
+		else
+			i = i + 1
+		end
+	end
+
+	if starti == i-1 then
+		return true, true
+	end
+	return nil, nil
+end
+
+function parse_get_params(code, starti)
+	i = starti
+	s = nil
+	local params = {}
+	local is_string = false
+	while s ~= "" do
+		s = string.sub(code, i, i)
+		if code:sub(i, i) == '"' then
+			is_string = (is_string==false) --toggle is_string
+		end
+		if s == ")" and is_string == false then
+			table.insert(params, string.sub(code, starti, i-1)) -- i: ) i+1 after )
+			return params, i + 1
+		end
+		if s == "," and is_string == false then
+			table.insert(params, string.sub(code, starti, i-1)) -- i: ) i+1 after )
+			starti = i + 1
+		end
+		i = i + 1
+	end
+	return nil, nil
+end
+
+function yc_parse_get_eeprom_param(cond, starti)
+	i = starti
+	s = nil
+	local addr
+	while s ~= "" do
+		s = string.sub(cond, i, i)
+		if string.find("0123456789", s) == nil or s == "" then
+			addr = string.sub(cond, starti, i-1) -- i: last number i+1 after last number
+			return addr, i
+		end
+		if s == "," then return nil, nil end
+		i = i + 1
+	end
+	return nil, nil
+end
+
+function yc_skip_to_endif(code, starti)
+	local i = starti
+	local s = false
+	local open_ifs = 1
+	while s ~= nil and s~= "" do
+		s = code:sub(i, i)
+		if s == "i" and code:sub(i+1, i+1) == "f" then --if in µCScript
+			open_ifs = open_ifs + 1
+		end
+		if s == ";" then
+			open_ifs = open_ifs - 1
+		end
+		if open_ifs == 0 then
+			return i + 1
+		end
+		i = i + 1
+	end
+	return nil
+end
+
+function yc_skip_to_else(code, starti)
+	local i = starti
+	local s = false
+	local open_ifs = 1
+	while s ~= nil and s~= "" do
+		s = code:sub(i, i)
+		if s == "i" and code:sub(i+1, i+1) == "f" then --if in µCScript
+			open_ifs = open_ifs + 1
+		end
+		if s == ";" then
+			open_ifs = open_ifs - 1
+		end
+		if open_ifs == 1 and s == ">" then
+			return i + 1
+		end
+		i = i + 1
+	end
+	return nil
+end
+
+--Commands
+function yc_command_on(params, L)
+	local rules = {}
+	for i, port in ipairs(params) do
+		L = yc_set_portstate (port, true, L)
+	end
+	return L
+end
+
+function yc_command_off(params, L)
+	local rules = {}
+	for i, port in ipairs(params) do
+		L = yc_set_portstate (port, false, L)
+	end
+	return L
+end
+
+function yc_command_print(params, eeprom, L)
+	local s = ""
+	for i, param in ipairs(params) do
+		if param:sub(1,1) == '"' and param:sub(#param, #param) == '"' then
+			s = s..param:sub(2, #param-1)
+		else
+			r = yc_command_parsecondition(param, L, eeprom)
+			if r == "1" or r == "0" then
+				s = s..r
+			else return nil end
+		end
+	end
+	print(s) --don't remove
+	return true
+end
+
+function yc_command_sbi(params, eeprom, L, Lv)
+	if params[1]==nil or params[2]==nil or params[3] ~=nil then return nil end
+	local status = yc_command_parsecondition(params[2], L, eeprom)
+
+	if status == nil then return nil, nil end
+
+	if string.find("ABCD", params[1])~=nil and #params[1]==1 then --is a port
+		if status == "1" then
+			Lv = yc_set_portstate (params[1], true,  Lv)
+		else
+			Lv = yc_set_portstate (params[1], false, Lv)
+		end
+		return eeprom, Lv;
+	end
+
+	--is an eeprom address
+	new_eeprom = "";
+	for i=1, #eeprom do
+		if tonumber(params[1])==i then 
+			new_eeprom = new_eeprom..status
+		else
+			new_eeprom = new_eeprom..eeprom:sub(i, i)
+		end
+	end
+	return new_eeprom, Lv
+end
+
+-- after (delay)
+function yc_command_after(params, pos)
+	if params[1] == nil or params[2] == nil or params[3] ~= nil then return nil end
+
+	--get time (maximum time is 200)
+	local time = tonumber(params[1])
+	if time == nil or time > 200 then
+		return nil
+	end
+
+	--get code in quotes "code"
+	if string.sub(params[2], 1, 1) ~= '"' or string.sub(params[2], #params[2], #params[2]) ~= '"' then return nil end
+	local code = string.sub(params[2], 2, #params[2] - 1)
+
+	local afterid = math.random(10000)
+	local meta = minetest.get_meta(pos)
+	meta:set_int("afterid", afterid)
+	minetest.after(time, yc_command_after_execute, {pos = pos, code = code, afterid = afterid})
+	return true
+end
+
+function yc_command_after_execute(params)
+	local meta = minetest.get_meta(params.pos)
+	if meta:get_int("afterid") == params.afterid then --make sure the node has not been changed
+		if yc_parsecode(params.code, params.pos) == nil then
+			meta:set_string("infotext", "Code in after() not valid!")
+		else
+			if code ~= nil then
+				meta:set_string("infotext", "Working Microcontroller\n"..code)
+			else
+				meta:set_string("infotext", "Working Microcontroller")
+			end
+		end
+	end
+end
+
+--If
+function yc_command_if(code, starti, L, eeprom)
+	local cond, endi = yc_command_if_getcondition(code, starti)
+	if cond == nil then return nil end
+
+	cond = yc_command_parsecondition(cond, L, eeprom)
+
+	if cond == "0" then result = false
+	elseif cond == "1" then result = true
+	else result = nil end
+	if result == nil then end
+	return result, endi --endi from local cond, endi = yc_command_if_getcondition(code, starti)
+end
+
+--Condition parsing
+function yc_command_if_getcondition(code, starti)
+	i = starti
+	s = nil
+	local brackets = 1 --1 Bracket to close
+	while s ~= "" do
+		s = string.sub(code, i, i)
+		
+		if s == ")" then
+			brackets = brackets - 1
+		end
+
+		if s == "(" then
+			brackets = brackets + 1
+		end
+
+		if brackets == 0 then
+			return string.sub(code, starti, i-1), i + 1 -- i: ( i+1 after (
+		end
+
+		i = i + 1
+	end
+	return nil, nil
+end
+
+function yc_command_parsecondition(cond, L, eeprom)
+	cond = string.gsub(cond, "A", tonumber(L.a and 1 or 0))
+	cond = string.gsub(cond, "B", tonumber(L.b and 1 or 0))
+	cond = string.gsub(cond, "C", tonumber(L.c and 1 or 0))
+	cond = string.gsub(cond, "D", tonumber(L.d and 1 or 0))
+
+
+	local i = 1
+	local l = string.len(cond)
+	while i<=l do
+		local s = cond:sub(i,i)
+		if s == "#" then
+			addr, endi = yc_parse_get_eeprom_param(cond, i+1)
+			buf = yc_eeprom_read(tonumber(addr), eeprom)
+			if buf == nil then return nil end
+			local call = cond:sub(i, endi-1)
+			cond = string.gsub(cond, call, buf)
+			i = 0
+			l = string.len(cond)
+		end
+		i = i + 1
+	end
+
+	cond = string.gsub(cond, "!0", "1")
+	cond = string.gsub(cond, "!1", "0")
+
+	local i = 2
+	local l = string.len(cond)
+	while i<=l do
+		local s = cond:sub(i,i)
+		local b = tonumber(cond:sub(i-1, i-1))
+		local a = tonumber(cond:sub(i+1, i+1))
+		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
+			if a == b  then buf = "1" end
+			if a ~= b then buf = "0" end
+			cond = string.gsub(cond, b..s..a, buf)
+			i = 1
+			l = string.len(cond)
+		end
+		i = i + 1
+	end
+
+	local i = 2 
+	local l = string.len(cond)
+	while i<=l do
+		local s = cond:sub(i,i)
+		local b = tonumber(cond:sub(i-1, i-1))
+		local a = tonumber(cond:sub(i+1, i+1))
+		if cond:sub(i+1, i+1) == nil then break end
+		if s == "&" then
+			if a==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
+			cond = string.gsub(cond, b..s..a, buf)
+			i = 1
+			l = string.len(cond)
+		end
+		if s == "|" then
+			if a==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
+			cond = string.gsub(cond, b..s..a, buf)
+			i = 1
+			l = string.len(cond)
+		end
+		if s == "~" then
+			if a==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
+			cond = string.gsub(cond, b..s..a, buf)
+			i = 1
+			l = string.len(cond)
+		end
+		i = i + 1
+	end
+
+	return cond
+end
+
+--Virtual-Hardware functions
+function yc_eeprom_read(number, eeprom)
+	if number == nil then return nil, nil end
+	value = eeprom:sub(number, number)
+	if value  == nil then return nil, nil end
+	return value, endi
+end
+
+--Real I/O functions
+function yc_action(pos, L) --L-->Lvirtual
+	local Lv = yc_get_virtual_portstates(pos)
+	local name = "mesecons_microcontroller:microcontroller"
+		..tonumber(L.d and 1 or 0)
+		..tonumber(L.c and 1 or 0)
+		..tonumber(L.b and 1 or 0)
+		..tonumber(L.a and 1 or 0)
+	local node = minetest.get_node(pos)
+	minetest.swap_node(pos, {name = name, param2 = node.param2})
+
+	yc_action_setports(pos, L, Lv)
+end
+
+function yc_action_setports(pos, L, Lv)
+	local name = "mesecons_microcontroller:microcontroller"
+	local rules
+	if Lv.a ~= L.a then
+		rules = mesecon:get_rules(name.."0001")
+		if L.a == true then mesecon:receptor_on(pos, rules)
+		else mesecon:receptor_off(pos, rules) end
+	end
+	if Lv.b ~= L.b then
+		rules = mesecon:get_rules(name.."0010")
+		if L.b == true then mesecon:receptor_on(pos, rules)
+		else mesecon:receptor_off(pos, rules) end
+	end
+	if Lv.c ~= L.c then 
+		rules = mesecon:get_rules(name.."0100")
+		if L.c == true then mesecon:receptor_on(pos, rules)
+		else mesecon:receptor_off(pos, rules) end
+	end
+	if Lv.d ~= L.d then 
+		rules = mesecon:get_rules(name.."1000")
+		if L.d == true then mesecon:receptor_on(pos, rules)
+		else mesecon:receptor_off(pos, rules) end
+	end
+end
+
+function yc_set_portstate(port, state, L)
+	if port == "A" then L.a = state
+	elseif port == "B" then L.b = state
+	elseif port == "C" then L.c = state
+	elseif port == "D" then L.d = state
+	else return nil end
+	return L
+end
+
+function yc_update_real_portstates(pos, node, rulename, newstate)
+	local meta = minetest.get_meta(pos)
+	if rulename == nil then
+		meta:set_int("real_portstates", 1)
+		return
+	end
+	local n = meta:get_int("real_portstates") - 1
+	if n < 0 then
+		legacy_update_ports(pos)
+		n = meta:get_int("real_portstates") - 1
+	end
+	local L = {}
+	for i = 1, 4 do
+		L[i] = n%2
+		n = math.floor(n/2)
+	end
+	if rulename.x == nil then
+		for _, rname in ipairs(rulename) do
+			local port = ({4, 1, nil, 3, 2})[rname.x+2*rname.z+3]
+			L[port] = (newstate == "on") and 1 or 0
+		end
+	else
+		local port = ({4, 1, nil, 3, 2})[rulename.x+2*rulename.z+3]
+		L[port] = (newstate == "on") and 1 or 0
+	end
+	meta:set_int("real_portstates", 1 + L[1] + 2*L[2] + 4*L[3] + 8*L[4])
+end
+
+function yc_get_real_portstates(pos) -- determine if ports are powered (by itself or from outside)
+	local meta = minetest.get_meta(pos)
+	local L = {}
+	local n = meta:get_int("real_portstates") - 1
+	if n < 0 then
+		return legacy_update_ports(pos)
+	end
+	for _, index in ipairs({"a", "b", "c", "d"}) do
+		L[index] = ((n%2) == 1)
+		n = math.floor(n/2)
+	end
+	return L
+end
+
+function yc_get_virtual_portstates(pos) -- portstates according to the name
+	name = minetest.get_node(pos).name
+	b, a = string.find(name, ":microcontroller")
+	if a == nil then return nil end
+	a = a + 1
+
+	Lvirtual = {a=false, b=false, c=false, d=false}
+	if name:sub(a  , a  ) == "1" then Lvirtual.d = true end
+	if name:sub(a+1, a+1) == "1" then Lvirtual.c = true end
+	if name:sub(a+2, a+2) == "1" then Lvirtual.b = true end
+	if name:sub(a+3, a+3) == "1" then Lvirtual.a = true end
+	return Lvirtual
+end
+
+function yc_merge_portstates(Lreal, Lvirtual)
+	local L = {a=false, b=false, c=false, d=false}
+	if Lvirtual.a or Lreal.a then L.a = true end
+	if Lvirtual.b or Lreal.b then L.b = true end
+	if Lvirtual.c or Lreal.c then L.c = true end
+	if Lvirtual.d or Lreal.d then L.d = true end
+	return L
+end

mods/mesecons/.mesecons_movestones/depends.txt

@@ -0,0 +1,3 @@
+mesecons
+mesecons_materials
+mesecons_mvps

mods/mesecons/.mesecons_movestones/init.lua

@@ -0,0 +1,216 @@
+-- MOVESTONE
+-- Non-sticky:
+-- Moves along mesecon lines
+-- Pushes all blocks in front of it
+--
+-- Sticky one
+-- Moves along mesecon lines
+-- Pushes all block in front of it
+-- Pull all blocks in its back
+
+function mesecon:get_movestone_direction(pos)
+	getactivated = 0
+	local lpos
+	local getactivated = 0
+	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}}
+
+	lpos = {x=pos.x+1, y=pos.y, z=pos.z}
+	for n = 1, 3 do
+		if mesecon:is_power_on(lpos, rules[n].x, rules[n].y, rules[n].z) 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].x, rules[n].y, rules[n].z) 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].x, rules[n].y, rules[n].z) 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].x, rules[n].y, rules[n].z) then
+			return {x=1, y=0, z=0}
+		end
+	end
+end
+
+minetest.register_node("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"},
+	paramtype2 = "facedir",
+	legacy_facedir_simple = true,
+	groups = {cracky=3},
+    	description="Movestone",
+	sounds = default.node_sound_stone_defaults(),
+	mesecons = {effector = {
+		action_on = function (pos, node)
+			local direction=mesecon:get_movestone_direction(pos)
+			if not direction then return end
+			minetest.remove_node(pos)
+			mesecon:update_autoconnect(pos)
+			minetest.add_entity(pos, "mesecons_movestones:movestone_entity")
+		end
+	}}
+})
+
+minetest.register_entity("mesecons_movestones:movestone_entity", {
+	physical = false,
+	visual = "sprite",
+	textures = {"jeija_movestone_side.png", "jeija_movestone_side.png", "jeija_movestone_side.png", "jeija_movestone_side.png", "jeija_movestone_arrows.png", "jeija_movestone_arrows.png"},
+	collisionbox = {-0.5,-0.5,-0.5, 0.5, 0.5, 0.5},
+	visual = "cube",
+	lastdir = {x=0, y=0, z=0},
+
+	on_punch = function(self, hitter)
+		self.object:remove()
+		hitter:get_inventory():add_item("main", "mesecons_movestones:movestone")
+	end,
+
+	on_step = function(self, dtime)
+		local pos = self.object:getpos()
+		pos.x, pos.y, pos.z = math.floor(pos.x+0.5), math.floor(pos.y+0.5), math.floor(pos.z+0.5)
+		local direction = mesecon:get_movestone_direction(pos)
+
+		if not direction then -- no mesecon power
+			--push only solid nodes
+			local name = minetest.get_node(pos).name
+			if  name ~= "air" and name ~= "ignore"
+			and ((not minetest.registered_nodes[name])
+			or minetest.registered_nodes[name].liquidtype == "none") then
+				mesecon:mvps_push(pos, self.lastdir, MOVESTONE_MAXIMUM_PUSH)
+			end
+			minetest.add_node(pos, {name="mesecons_movestones:movestone"})
+			self.object:remove()
+			return
+		end
+
+		local success, stack, oldstack =
+			mesecon:mvps_push(pos, direction, MOVESTONE_MAXIMUM_PUSH)
+		if not success then -- Too large stack/stopper in the way
+			minetest.add_node(pos, {name="mesecons_movestones:movestone"})
+			self.object:remove()
+			return
+		else
+			mesecon:mvps_process_stack (stack)
+			mesecon:mvps_move_objects  (pos, direction, oldstack)
+			self.lastdir = direction
+		end
+
+		self.object:setvelocity({x=direction.x*2, y=direction.y*2, z=direction.z*2})
+	end,
+})
+
+minetest.register_craft({
+	output = "mesecons_movestones:movestone 2",
+	recipe = {
+		{"default:stone", "default:stone", "default:stone"},
+		{"group:mesecon_conductor_craftable", "group:mesecon_conductor_craftable", "group:mesecon_conductor_craftable"},
+		{"default:stone", "default:stone", "default:stone"},
+	}
+})
+
+
+
+-- STICKY_MOVESTONE
+
+minetest.register_node("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"),
+	paramtype2 = "facedir",
+	legacy_facedir_simple = true,
+	groups = {cracky=3},
+    	description="Sticky Movestone",
+	sounds = default.node_sound_stone_defaults(),
+	mesecons = {effector = {
+		action_on = function (pos, node)
+			local direction=mesecon:get_movestone_direction(pos)
+			if not direction then return end
+			minetest.remove_node(pos)
+			mesecon:update_autoconnect(pos)
+			minetest.add_entity(pos, "mesecons_movestones:sticky_movestone_entity")
+		end
+	}}
+})
+
+minetest.register_craft({
+	output = "mesecons_movestones:sticky_movestone 2",
+	recipe = {
+		{"mesecons_materials:glue", "mesecons_movestones:movestone", "mesecons_materials:glue"},
+	}
+})
+
+minetest.register_entity("mesecons_movestones:sticky_movestone_entity", {
+	physical = false,
+	visual = "sprite",
+	textures = {"jeija_movestone_side.png", "jeija_movestone_side.png", "jeija_movestone_side.png", "jeija_movestone_side.png", "jeija_sticky_movestone.png", "jeija_sticky_movestone.png"},
+	collisionbox = {-0.5, -0.5, -0.5, 0.5, 0.5, 0.5},
+	visual = "cube",
+	lastdir = {x=0, y=0, z=0},
+
+	on_punch = function(self, hitter)
+		self.object:remove()
+		hitter:get_inventory():add_item("main", 'mesecons_movestones:sticky_movestone')
+	end,
+
+	on_step = function(self, dtime)
+		local pos = self.object:getpos()
+		pos.x, pos.y, pos.z = math.floor(pos.x+0.5), math.floor(pos.y+0.5), math.floor(pos.z+0.5)
+		local direction = mesecon:get_movestone_direction(pos)
+
+		if not direction then -- no mesecon power
+			--push only solid nodes
+			local name = minetest.get_node(pos).name
+			if  name ~= "air" and name ~= "ignore"
+			and ((not minetest.registered_nodes[name])
+			or minetest.registered_nodes[name].liquidtype == "none") then
+				mesecon:mvps_push(pos, self.lastdir, MOVESTONE_MAXIMUM_PUSH)
+				--STICKY
+				mesecon:mvps_pull_all(pos, self.lastdir)
+			end
+			minetest.add_node(pos, {name="mesecons_movestones:sticky_movestone"})
+			self.object:remove()
+			return
+		end
+
+		local success, stack, oldstack =
+			mesecon:mvps_push(pos, direction, MOVESTONE_MAXIMUM_PUSH)
+		if not success then -- Too large stack/stopper in the way
+			minetest.add_node(pos, {name="mesecons_movestones:sticky_movestone"})
+			self.object:remove()
+			return
+		else
+			mesecon:mvps_process_stack (stack)
+			mesecon:mvps_move_objects  (pos, direction, oldstack)
+			self.lastdir = direction
+		end
+
+		self.object:setvelocity({x=direction.x*2, y=direction.y*2, z=direction.z*2})
+
+		--STICKY
+		mesecon:mvps_pull_all(pos, direction)
+	end,
+})
+
+
+mesecon:register_mvps_unmov("mesecons_movestones:movestone_entity")
+mesecon:register_mvps_unmov("mesecons_movestones:sticky_movestone_entity")

mods/mesecons/.mesecons_noteblock/depends.txt

@@ -0,0 +1 @@
+mesecons

mods/mesecons/.mesecons_noteblock/init.lua

@@ -0,0 +1,79 @@
+minetest.register_node("mesecons_noteblock:noteblock", {
+	description = "Noteblock",
+	tiles = {"mesecons_noteblock.png"},
+	groups = {snappy=2,choppy=2,oddly_breakable_by_hand=2},
+	drawtype = "allfaces_optional",
+	visual_scale = 1.3,
+	paramtype="light",
+	after_place_node = function(pos)
+		minetest.add_node(pos, {name="mesecons_noteblock:noteblock", param2=0})
+	end,
+	on_punch = function (pos, node) -- change sound when punched
+		local param2 = node.param2+1
+		if param2==12 then param2=0 end
+		minetest.add_node(pos, {name = node.name, param2 = param2})
+		mesecon.noteblock_play(pos, param2)
+	end,
+	sounds = default.node_sound_wood_defaults(),
+	mesecons = {effector = { -- play sound when activated
+		action_on = function (pos, node)
+			mesecon.noteblock_play(pos, node.param2)
+		end
+	}}
+})
+
+minetest.register_craft({
+	output = "mesecons_noteblock:noteblock 1",
+	recipe = {
+		{"group:wood", "group:wood", "group:wood"},
+		{"group:mesecon_conductor_craftable", "default:steel_ingot", "group:mesecon_conductor_craftable"},
+		{"group:wood", "group:wood", "group:wood"},
+	}
+})
+
+mesecon.noteblock_play = function (pos, param2)
+	local soundname
+	if param2==8 then
+		soundname="mesecons_noteblock_a"
+	elseif param2==9 then
+		soundname="mesecons_noteblock_asharp"
+	elseif param2==10 then
+		soundname="mesecons_noteblock_b"
+	elseif param2==11 then
+		soundname="mesecons_noteblock_c"
+	elseif param2==0 then
+		soundname="mesecons_noteblock_csharp"
+	elseif param2==1 then
+		soundname="mesecons_noteblock_d"
+	elseif param2==2 then
+		soundname="mesecons_noteblock_dsharp"
+	elseif param2==3 then
+		soundname="mesecons_noteblock_e"
+	elseif param2==4 then
+		soundname="mesecons_noteblock_f"
+	elseif param2==5 then
+		soundname="mesecons_noteblock_fsharp"
+	elseif param2==6 then
+		soundname="mesecons_noteblock_g"
+	elseif param2==7 then
+		soundname="mesecons_noteblock_gsharp"
+	end
+	local block_below_name = minetest.get_node({x=pos.x, y=pos.y-1, z=pos.z}).name
+	if block_below_name == "default:glass" then
+		soundname="mesecons_noteblock_hihat"
+	end
+	if block_below_name == "default:stone" then
+		soundname="mesecons_noteblock_kick"
+	end
+	if block_below_name == "default:chest" then
+		soundname="mesecons_noteblock_snare"
+	end
+	if block_below_name == "default:tree" then
+		soundname="mesecons_noteblock_crash"
+	end
+	if block_below_name == "default:wood" then
+		soundname="mesecons_noteblock_litecrash"
+	end
+	minetest.sound_play(soundname,
+	{pos = pos, gain = 1.0, max_hear_distance = 32,})
+end

mods/mesecons/LICENSE.txt

@@ -0,0 +1,532 @@
+The LGPLv3 applies to all code in this project.
+The CC-BY-SA-3.0 license applies to textures and any other content in this project which is not source code.
+
+=================================================================
+
+GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+  This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+  0. Additional Definitions.
+
+  As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
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+other than an Application or a Combined Work as defined below.
+
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mods/mesecons/README.md

@@ -0,0 +1,78 @@
+    ########################################################################
+    ##  __    __   _____   _____   _____   _____   _____   _   _   _____  ##
+    ## |  \  /  | |  ___| |  ___| |  ___| |  ___| |  _  | | \ | | |  ___| ##
+    ## |   \/   | | |___  | |___  | |___  | |     | | | | |  \| | | |___  ##
+    ## | |\__/| | |  ___| |___  | |  ___| | |     | | | | |     | |___  | ##
+    ## | |    | | | |___   ___| | | |___  | |___  | |_| | | |\  |  ___| | ##
+    ## |_|    |_| |_____| |_____| |_____| |_____| |_____| |_| \_| |_____| ##
+    ##                                                                    ##
+    ########################################################################
+
+MESECONS by Jeija and contributors
+
+Mezzee-what?
+------------
+[Mesecons](http://mesecons.net/)! They're yellow, they're conductive, and they'll add a whole new dimension to Minetest's gameplay.
+
+Mesecons is a mod for [Minetest](http://minetest.net/) that implements a ton of items related to digital circuitry, such as wires, buttons, lights, and even programmable controllers. Among other things, there are also pistons, solar panels, pressure plates, and note blocks.
+
+Mesecons has a similar goal to Redstone in Minecraft, but works in its own way, with different rules and mechanics.
+
+OK, I want in.
+--------------
+Go get it!
+
+[DOWNLOADS PAGE](http://mesecons.net/downloads.php)
+
+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:
+
+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.
+3. Open up the Minetest mods folder - usually `/mods/`. If you see the `minetest` or folder inside of that, that is your mod folder instead.
+4. Copy the Mesecons folder into the mods folder.
+
+Don't like some parts of Mesecons? Open up the Mesecons folder and delete the subfolder containing the mod you don't want. If you didn't want movestones, for example, all you have to do is delete the `mesecons_movestones` folder and they will no longer be available.
+
+There are no dependencies - it will work right after installing!
+
+How do I use this thing?
+------------------------
+How about a [quick overview video](https://www.youtube.com/watch?v=6kmeQj6iW5k)?
+
+Or maybe a [comprehensive reference](http://mesecons.net/items.php) is your style?
+
+An overview for the very newest of new beginners? How does [this one](http://uberi.mesecons.net/projects/MeseconsBasics/index.html) look?
+
+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)!
+
+Who wrote it anyways?
+---------------------
+These awesome people made Mesecons possible!
+
+| Contributor     | Contribution                     |
+| --------------- | -------------------------------- |
+| Jat15           | Various tweaks.                  |
+| Jeija           | **Main developer! Everything.**  |
+| Jordach         | Noteblock sounds.                |
+| khonkhortistan  | Code, recipes, textures.         |
+| Kotolegokot     | Nodeboxes for items.             |
+| minerd247       | Textures.                        |
+| Nore/Novatux    | Code.                            |
+| RealBadAngel    | Fixes, improvements.             |
+| sfan5           | Code, recipes, textures.         |
+| suzenako        | Piston sounds.                   |
+| Uberi/Temperest | Code, textures, documentation.   |
+| VanessaE        | Code, recipes, textures, design. |
+| Whiskers75      | Logic gates implementation.      |
+
+There are also a whole bunch of other people helping with everything from code to testing and feedback. Mesecons would also not be possible without their help!
+
+Alright, how can I use it?
+--------------------------
+All textures in this project are licensed under the CC-BY-SA 3.0 (Creative Commons Attribution-ShareAlike 3.0 Generic). That means you can distribute and remix them as much as you want to, under the condition that you give credit to the authors and the project, and that if you remix and release them, they must be under the same or similar license to this one.
+
+All code in this project is licensed under the LGPL version 3 or later. That means you have unlimited freedom to distribute and modify the work however you see fit, provided that if you decide to distribute it or any modified versions of it, you must also use the same license. The LGPL also grants the additional freedom to write extensions for the software and distribute them without the extensions being subject to the terms of the LGPL, although the software itself retains its license.
+
+No warranty is provided, express or implied, for any part of the project.

mods/mesecons/mesecons/VERSION

@@ -0,0 +1 @@
+0.41 DEV

mods/mesecons/mesecons/actionqueue.lua

@@ -0,0 +1,114 @@
+mesecon.queue.actions={} -- contains all ActionQueue actions
+
+function mesecon.queue:add_function(name, func)
+	mesecon.queue.funcs[name] = func
+end
+
+-- If add_action with twice the same overwritecheck and same position are called, the first one is overwritten
+-- use overwritecheck nil to never overwrite, but just add the event to the queue
+-- priority specifies the order actions are executed within one globalstep, highest first
+-- should be between 0 and 1
+function mesecon.queue:add_action(pos, func, params, time, overwritecheck, priority)
+	-- Create Action Table:
+	time = time or 0 -- time <= 0 --> execute, time > 0 --> wait time until execution
+	priority = priority or 1
+	local action = {	pos=mesecon:tablecopy(pos),
+				func=func,
+				params=mesecon:tablecopy(params),
+				time=time,
+				owcheck=(overwritecheck and mesecon:tablecopy(overwritecheck)) or nil,
+				priority=priority}
+
+	local toremove = nil
+	-- Otherwise, add the action to the queue
+	if overwritecheck then -- check if old action has to be overwritten / removed:
+		for i, ac in ipairs(mesecon.queue.actions) do
+			if(mesecon:cmpPos(pos, ac.pos)
+			and mesecon:cmpAny(overwritecheck, ac.owcheck)) then
+				toremove = i
+				break
+			end
+		end
+	end
+
+	if (toremove ~= nil) then
+		table.remove(mesecon.queue.actions, toremove)
+	end
+
+	table.insert(mesecon.queue.actions, action)
+end
+
+-- execute the stored functions on a globalstep
+-- if however, the pos of a function is not loaded (get_node_or_nil == nil), do NOT execute the function
+-- this makes sure that resuming mesecons circuits when restarting minetest works fine
+-- However, even that does not work in some cases, that's why we delay the time the globalsteps
+-- start to be execute by 5 seconds
+local get_highest_priority = function (actions)
+	local highestp = -1, highesti
+	for i, ac in ipairs(actions) do
+		if ac.priority > highestp then
+			highestp = ac.priority
+			highesti = i
+		end
+	end
+
+	return highesti
+end
+
+local m_time = 0
+minetest.register_globalstep(function (dtime)
+	m_time = m_time + dtime
+	if (m_time < MESECONS_RESUMETIME) then return end -- don't even try if server has not been running for XY seconds
+	local actions = mesecon:tablecopy(mesecon.queue.actions)
+	local actions_now={}
+
+	mesecon.queue.actions = {}
+
+	-- sort actions into two categories:
+	-- those toexecute now (actions_now) and those to execute later (mesecon.queue.actions)
+	for i, ac in ipairs(actions) do
+		if ac.time > 0 then
+			ac.time = ac.time - dtime -- executed later
+			table.insert(mesecon.queue.actions, ac)
+		else
+			table.insert(actions_now, ac)
+		end
+	end
+
+	while(#actions_now > 0) do -- execute highest priorities first, until all are executed
+		local hp = get_highest_priority(actions_now)
+		mesecon.queue:execute(actions_now[hp])
+		table.remove(actions_now, hp)
+	end
+end)
+
+function mesecon.queue:execute(action)
+	mesecon.queue.funcs[action.func](action.pos, unpack(action.params))
+end
+
+
+-- Store and read the ActionQueue to / from a file
+-- so that upcoming actions are remembered when the game
+-- is restarted
+
+local wpath = minetest.get_worldpath()
+local function file2table(filename)
+	local f = io.open(filename, "r")
+	if f==nil then return {} end
+	local t = f:read("*all")
+	f:close()
+	if t=="" or t==nil then return {} end
+	return minetest.deserialize(t)
+end
+
+local function table2file(filename, table)
+	local f = io.open(filename, "w")
+	f:write(minetest.serialize(table))
+	f:close()
+end
+
+mesecon.queue.actions = file2table(wpath.."/mesecon_actionqueue")
+
+minetest.register_on_shutdown(function()
+	mesecon.queue.actions = table2file(wpath.."/mesecon_actionqueue", mesecon.queue.actions)
+end)

mods/mesecons/mesecons/depends.txt

@@ -0,0 +1 @@
+default

mods/mesecons/mesecons/init.lua

@@ -0,0 +1,142 @@
+-- |\    /| ____ ____  ____ _____   ____         _____
+-- | \  / | |    |     |    |      |    | |\   | |
+-- |  \/  | |___ ____  |___ |      |    | | \  | |____
+-- |      | |        | |    |      |    | |  \ |     |
+-- |      | |___ ____| |___ |____  |____| |   \| ____|
+-- by Jeija, Uberi (Temperest), sfan5, VanessaE
+--
+--
+--
+-- This mod adds mesecons[=minecraft redstone] and different receptors/effectors to minetest.
+-- See the documentation on the forum for additional information, especially about crafting
+--
+--
+-- For developer documentation see the Developers' section on mesecons.TK
+--
+--
+--
+--Quick draft for the mesecons array in the node's definition
+--mesecons =
+--{
+--	receptor =
+--	{
+--		state = mesecon.state.on/off
+--		rules = rules/get_rules
+--	},
+--	effector =
+--	{
+--		action_on = function
+--		action_off = function
+--		action_change = function
+--		rules = rules/get_rules
+--	},
+--	conductor = 
+--	{
+--		state = mesecon.state.on/off
+--		offstate = opposite state (for state = on only)
+--		onstate = opposite state (for state = off only)
+--		rules = rules/get_rules
+--	}
+--}
+
+-- PUBLIC VARIABLES
+mesecon={} -- contains all functions and all global variables
+mesecon.queue={} -- contains the ActionQueue
+mesecon.queue.funcs={} -- contains all ActionQueue functions
+
+-- Settings
+dofile(minetest.get_modpath("mesecons").."/settings.lua")
+
+-- Presets (eg default rules)
+dofile(minetest.get_modpath("mesecons").."/presets.lua");
+
+
+-- Utilities like comparing positions,
+-- adding positions and rules,
+-- mostly things that make the source look cleaner
+dofile(minetest.get_modpath("mesecons").."/util.lua");
+
+-- The ActionQueue
+-- Saves all the actions that have to be execute in the future
+dofile(minetest.get_modpath("mesecons").."/actionqueue.lua");
+
+-- Internal stuff
+-- This is the most important file
+-- it handles signal transmission and basically everything else
+-- It is also responsible for managing the nodedef things,
+-- like calling action_on/off/change
+dofile(minetest.get_modpath("mesecons").."/internal.lua");
+
+-- Deprecated stuff
+-- To be removed in future releases
+-- Currently there is nothing here
+dofile(minetest.get_modpath("mesecons").."/legacy.lua");
+
+-- API
+-- these are the only functions you need to remember
+
+mesecon.queue:add_function("receptor_on", function (pos, rules)
+	rules = rules or mesecon.rules.default
+
+	-- if area (any of the rule targets) is not loaded, keep trying and call this again later
+	for _, rule in ipairs(mesecon:flattenrules(rules)) do
+		local np = mesecon:addPosRule(pos, rule)
+		-- if area is not loaded, keep trying
+		if minetest.get_node_or_nil(np) == nil then
+			mesecon.queue:add_action(pos, "receptor_on", {rules}, nil, rules)
+			return
+		end
+	end
+
+	-- execute action
+	for _, rule in ipairs(mesecon:flattenrules(rules)) do
+		local np = mesecon:addPosRule(pos, rule)
+		local rulenames = mesecon:rules_link_rule_all(pos, rule)
+		for _, rulename in ipairs(rulenames) do
+			mesecon:turnon(np, rulename)
+		end
+	end
+end)
+
+function mesecon:receptor_on(pos, rules)
+	mesecon.queue:add_action(pos, "receptor_on", {rules}, nil, rules)
+end
+
+mesecon.queue:add_function("receptor_off", function (pos, rules)
+	rules = rules or mesecon.rules.default
+
+	-- if area (any of the rule targets) is not loaded, keep trying and call this again later
+	for _, rule in ipairs(mesecon:flattenrules(rules)) do
+		local np = mesecon:addPosRule(pos, rule)
+		if minetest.get_node_or_nil(np) == nil then
+			mesecon.queue:add_action(pos, "receptor_off", {rules}, nil, rules)
+			return
+		end
+	end
+
+	for _, rule in ipairs(mesecon:flattenrules(rules)) do
+		local np = mesecon:addPosRule(pos, rule)
+		local rulenames = mesecon:rules_link_rule_all(pos, rule)
+		for _, rulename in ipairs(rulenames) do
+			if not mesecon:connected_to_receptor(np, mesecon:invertRule(rule)) then
+				mesecon:turnoff(np, rulename)
+			else
+				mesecon:changesignal(np, minetest.get_node(np), rulename, mesecon.state.off, 2)
+			end
+		end
+	end
+end)
+
+function mesecon:receptor_off(pos, rules)
+	mesecon.queue:add_action(pos, "receptor_off", {rules}, nil, rules)
+end
+
+--The actual wires
+dofile(minetest.get_modpath("mesecons").."/wires.lua");
+
+--Services like turnoff receptor on dignode and so on
+dofile(minetest.get_modpath("mesecons").."/services.lua");
+
+if minetest.setting_getbool("log_mods") then
+	minetest.log("action", "Carbone: [mesecons] loaded.")
+end

mods/mesecons/mesecons/internal.lua

@@ -0,0 +1,704 @@
+-- Internal.lua - The core of mesecons
+--
+-- For more practical developer resources see mesecons.tk
+--
+-- Function overview
+-- mesecon:get_effector(nodename)     --> Returns the mesecons.effector -specifictation in the nodedef by the nodename
+-- mesecon:get_receptor(nodename)     --> Returns the mesecons.receptor -specifictation in the nodedef by the nodename
+-- mesecon:get_conductor(nodename)    --> Returns the mesecons.conductor-specifictation in the nodedef by the nodename
+-- mesecon:get_any_inputrules (node)  --> Returns the rules of a node if it is a conductor or an effector
+-- mesecon:get_any_outputrules (node) --> Returns the rules of a node if it is a conductor or a receptor
+
+-- RECEPTORS
+-- mesecon:is_receptor(nodename)     --> Returns true if nodename is a receptor
+-- mesecon:is_receptor_on(nodename)  --> Returns true if nodename is an receptor with state = mesecon.state.on
+-- mesecon:is_receptor_off(nodename) --> Returns true if nodename is an receptor with state = mesecon.state.off
+-- mesecon:receptor_get_rules(node)  --> Returns the rules of the receptor (mesecon.rules.default if none specified)
+
+-- EFFECTORS
+-- mesecon:is_effector(nodename)     --> Returns true if nodename is an effector
+-- mesecon:is_effector_on(nodename)  --> Returns true if nodename is an effector with nodedef.mesecons.effector.action_off
+-- mesecon:is_effector_off(nodename) --> Returns true if nodename is an effector with nodedef.mesecons.effector.action_on
+-- mesecon:effector_get_rules(node)  --> Returns the input rules of the effector (mesecon.rules.default if none specified)
+
+-- SIGNALS
+-- mesecon:activate(pos, node, recdepth)		--> Activates   the effector node at the specific pos (calls nodedef.mesecons.effector.action_on), higher recdepths are executed later
+-- mesecon:deactivate(pos, node, recdepth)		--> Deactivates the effector node at the specific pos (calls nodedef.mesecons.effector.action_off), "
+-- mesecon:changesignal(pos, node, rulename, newstate)	--> Changes     the effector node at the specific pos (calls nodedef.mesecons.effector.action_change), "
+
+-- RULES
+-- mesecon:add_rules(name, rules) | deprecated? --> Saves rules table by name
+-- mesecon:get_rules(name, rules) | deprecated? --> Loads rules table with name
+
+-- CONDUCTORS
+-- mesecon:is_conductor(nodename)     --> Returns true if nodename is a conductor
+-- mesecon:is_conductor_on(node)  --> Returns true if node is a conductor with state = mesecon.state.on
+-- mesecon:is_conductor_off(node) --> Returns true if node is a conductor with state = mesecon.state.off
+-- mesecon:get_conductor_on(node_off) --> Returns the onstate  nodename of the conductor
+-- mesecon:get_conductor_off(node_on) --> Returns the offstate nodename of the conductor
+-- mesecon:conductor_get_rules(node)  --> Returns the input+output rules of a conductor (mesecon.rules.default if none specified)
+
+-- HIGH-LEVEL Internals
+-- mesecon:is_power_on(pos)             --> Returns true if pos emits power in any way
+-- mesecon:is_power_off(pos)            --> Returns true if pos does not emit power in any way
+-- mesecon:turnon(pos, rulename)        --> Returns true  whatever there is at pos. Calls itself for connected nodes (if pos is a conductor) --> recursive, the rulename is the name of the input rule that caused calling turnon; Uses third parameter recdepth internally to determine how far away the current node is from the initial pos as it uses recursion
+-- mesecon:turnoff(pos, rulename)       --> Turns off whatever there is at pos. Calls itself for connected nodes (if pos is a conductor) --> recursive, the rulename is the name of the input rule that caused calling turnoff; Uses third parameter recdepth internally to determine how far away the current node is from the initial pos as it uses recursion
+-- mesecon:connected_to_receptor(pos)   --> Returns true if pos is connected to a receptor directly or via conductors; calls itself if pos is a conductor --> recursive
+-- mesecon:rules_link(output, input, dug_outputrules) --> Returns true if outputposition + outputrules = inputposition and inputposition + inputrules = outputposition (if the two positions connect)
+-- mesecon:rules_link_anydir(outp., inp., d_outpr.)   --> Same as rules mesecon:rules_link but also returns true if output and input are swapped
+-- mesecon:is_powered(pos)              --> Returns true if pos is powered by a receptor or a conductor
+
+-- RULES ROTATION helpsers
+-- mesecon:rotate_rules_right(rules)
+-- mesecon:rotate_rules_left(rules)
+-- mesecon:rotate_rules_up(rules)
+-- mesecon:rotate_rules_down(rules)
+-- These functions return rules that have been rotated in the specific direction
+
+-- General
+function mesecon:get_effector(nodename)
+	if  minetest.registered_nodes[nodename]
+	and minetest.registered_nodes[nodename].mesecons
+	and minetest.registered_nodes[nodename].mesecons.effector then
+		return minetest.registered_nodes[nodename].mesecons.effector
+	end
+end
+
+function mesecon:get_receptor(nodename)
+	if  minetest.registered_nodes[nodename]
+	and minetest.registered_nodes[nodename].mesecons
+	and minetest.registered_nodes[nodename].mesecons.receptor then
+		return minetest.registered_nodes[nodename].mesecons.receptor
+	end
+end
+
+function mesecon:get_conductor(nodename)
+	if  minetest.registered_nodes[nodename]
+	and minetest.registered_nodes[nodename].mesecons
+	and minetest.registered_nodes[nodename].mesecons.conductor then
+		return minetest.registered_nodes[nodename].mesecons.conductor
+	end
+end
+
+function mesecon:get_any_outputrules (node)
+	if mesecon:is_conductor(node.name) then
+		return mesecon:conductor_get_rules(node)
+	elseif mesecon:is_receptor(node.name) then
+		return mesecon:receptor_get_rules(node)
+	end
+	return false
+end
+
+function mesecon:get_any_inputrules (node)
+	if mesecon:is_conductor(node.name) then
+		return mesecon:conductor_get_rules(node)
+	elseif mesecon:is_effector(node.name) then
+		return mesecon:effector_get_rules(node)
+	end
+	return false
+end
+
+-- Receptors
+-- Nodes that can power mesecons
+function mesecon:is_receptor_on(nodename)
+	local receptor = mesecon:get_receptor(nodename)
+	if receptor and receptor.state == mesecon.state.on then
+		return true
+	end
+	return false
+end
+
+function mesecon:is_receptor_off(nodename)
+	local receptor = mesecon:get_receptor(nodename)
+	if receptor and receptor.state == mesecon.state.off then
+		return true
+	end
+	return false
+end
+
+function mesecon:is_receptor(nodename)
+	local receptor = mesecon:get_receptor(nodename)
+	if receptor then
+		return true
+	end
+	return false
+end
+
+function mesecon:receptor_get_rules(node)
+	local receptor = mesecon:get_receptor(node.name)
+	if receptor then
+		local rules = receptor.rules
+		if type(rules) == 'function' then
+			return rules(node)
+		elseif rules then
+			return rules
+		end
+	end
+
+	return mesecon.rules.default
+end
+
+-- Effectors
+-- Nodes that can be powered by mesecons
+function mesecon:is_effector_on(nodename)
+	local effector = mesecon:get_effector(nodename)
+	if effector and effector.action_off then
+		return true
+	end
+	return false
+end
+
+function mesecon:is_effector_off(nodename)
+	local effector = mesecon:get_effector(nodename)
+	if effector and effector.action_on then
+		return true
+	end
+	return false
+end
+
+function mesecon:is_effector(nodename)
+	local effector = mesecon:get_effector(nodename)
+	if effector then
+		return true
+	end
+	return false
+end
+
+function mesecon:effector_get_rules(node)
+	local effector = mesecon:get_effector(node.name)
+	if effector then
+		local rules = effector.rules
+		if type(rules) == 'function' then
+			return rules(node)
+		elseif rules then
+			return rules
+		end
+	end
+	return mesecon.rules.default
+end
+
+-- #######################
+-- # Signals (effectors) #
+-- #######################
+
+-- Activation:
+mesecon.queue:add_function("activate", function (pos, rulename)
+	node = minetest.get_node(pos)
+	effector = mesecon:get_effector(node.name)
+
+	if effector and effector.action_on then
+		effector.action_on(pos, node, rulename)
+	end
+end)
+
+function mesecon:activate(pos, node, rulename, recdepth)
+	if rulename == nil then
+		for _,rule in ipairs(mesecon:effector_get_rules(node)) do
+			mesecon:activate(pos, node, rule, recdepth + 1)
+		end
+		return
+	end
+	mesecon.queue:add_action(pos, "activate", {rulename}, nil, rulename, 1 / recdepth)
+end
+
+
+-- Deactivation
+mesecon.queue:add_function("deactivate", function (pos, rulename)
+	node = minetest.get_node(pos)
+	effector = mesecon:get_effector(node.name)
+
+	if effector and effector.action_off then
+		effector.action_off(pos, node, rulename)
+	end
+end)
+
+function mesecon:deactivate(pos, node, rulename, recdepth)
+	if rulename == nil then
+		for _,rule in ipairs(mesecon:effector_get_rules(node)) do
+			mesecon:deactivate(pos, node, rule, recdepth + 1)
+		end
+		return
+	end
+	mesecon.queue:add_action(pos, "deactivate", {rulename}, nil, rulename, 1 / recdepth)
+end
+
+
+-- Change
+mesecon.queue:add_function("change", function (pos, rulename, changetype)
+	node = minetest.get_node(pos)
+	effector = mesecon:get_effector(node.name)
+
+	if effector and effector.action_change then
+		effector.action_change(pos, node, rulename, changetype)
+	end
+end)
+
+function mesecon:changesignal(pos, node, rulename, newstate, recdepth)
+	if rulename == nil then
+		for _,rule in ipairs(mesecon:effector_get_rules(node)) do
+			mesecon:changesignal(pos, node, rule, newstate, recdepth + 1)
+		end
+		return
+	end
+
+	mesecon.queue:add_action(pos, "change", {rulename, newstate}, nil, rulename, 1 / recdepth)
+end
+
+-- #########
+-- # Rules # "Database" for rulenames
+-- #########
+
+function mesecon:add_rules(name, rules)
+	mesecon.rules[name] = rules
+end
+
+function mesecon:get_rules(name)
+	return mesecon.rules[name]
+end
+
+-- Conductors
+
+function mesecon:is_conductor_on(node, rulename)
+	local conductor = mesecon:get_conductor(node.name)
+	if conductor then
+		if conductor.state then
+			return conductor.state == mesecon.state.on
+		end
+		if conductor.states then
+			if not rulename then
+				return mesecon:getstate(node.name, conductor.states) ~= 1
+			end
+			local bit = mesecon:rule2bit(rulename, mesecon:conductor_get_rules(node))
+			local binstate = mesecon:getbinstate(node.name, conductor.states)
+			return mesecon:get_bit(binstate, bit)
+		end
+	end
+	return false
+end
+
+function mesecon:is_conductor_off(node, rulename)
+	local conductor = mesecon:get_conductor(node.name)
+	if conductor then
+		if conductor.state then
+			return conductor.state == mesecon.state.off
+		end
+		if conductor.states then
+			if not rulename then
+				return mesecon:getstate(node.name, conductor.states) == 1
+			end
+			local bit = mesecon:rule2bit(rulename, mesecon:conductor_get_rules(node))
+			local binstate = mesecon:getbinstate(node.name, conductor.states)
+			return not mesecon:get_bit(binstate, bit)
+		end
+	end
+	return false
+end
+
+function mesecon:is_conductor(nodename)
+	local conductor = mesecon:get_conductor(nodename)
+	if conductor then
+		return true
+	end
+	return false
+end
+
+function mesecon:get_conductor_on(node_off, rulename)
+	local conductor = mesecon:get_conductor(node_off.name)
+	if conductor then
+		if conductor.onstate then
+			return conductor.onstate
+		end
+		if conductor.states then
+			local bit = mesecon:rule2bit(rulename, mesecon:conductor_get_rules(node_off))
+			local binstate = mesecon:getbinstate(node_off.name, conductor.states)
+			binstate = mesecon:set_bit(binstate, bit, "1")
+			return conductor.states[tonumber(binstate,2)+1]
+		end
+	end
+	return offstate
+end
+
+function mesecon:get_conductor_off(node_on, rulename)
+	local conductor = mesecon:get_conductor(node_on.name)
+	if conductor then
+		if conductor.offstate then
+			return conductor.offstate
+		end
+		if conductor.states then
+			local bit = mesecon:rule2bit(rulename, mesecon:conductor_get_rules(node_on))
+			local binstate = mesecon:getbinstate(node_on.name, conductor.states)
+			binstate = mesecon:set_bit(binstate, bit, "0")
+			return conductor.states[tonumber(binstate,2)+1]
+		end
+	end
+	return onstate
+end
+
+function mesecon:conductor_get_rules(node)
+	local conductor = mesecon:get_conductor(node.name)
+	if conductor then
+		local rules = conductor.rules
+		if type(rules) == 'function' then
+			return rules(node)
+		elseif rules then
+			return rules
+		end
+	end
+	return mesecon.rules.default
+end
+
+-- some more general high-level stuff
+
+function mesecon:is_power_on(pos, rulename)
+	local node = minetest.get_node(pos)
+	if mesecon:is_conductor_on(node, rulename) or mesecon:is_receptor_on(node.name) then
+		return true
+	end
+	return false
+end
+
+function mesecon:is_power_off(pos, rulename)
+	local node = minetest.get_node(pos)
+	if mesecon:is_conductor_off(node, rulename) or mesecon:is_receptor_off(node.name) then
+		return true
+	end
+	return false
+end
+
+function mesecon:turnon(pos, rulename, recdepth)
+	recdepth = recdepth or 2
+	local node = minetest.get_node(pos)
+
+	if(node.name == "ignore") then
+		-- try turning on later again
+		mesecon.queue:add_action(
+			pos, "turnon", {rulename, recdepth + 1}, nil, true)
+	end
+	
+	if mesecon:is_conductor_off(node, rulename) then
+		local rules = mesecon:conductor_get_rules(node)
+
+		if not rulename then
+			for _, rule in ipairs(mesecon:flattenrules(rules)) do
+				if mesecon:connected_to_receptor(pos, rule) then
+					mesecon:turnon(pos, rule, recdepth + 1)
+				end
+			end
+			return
+		end
+
+		minetest.swap_node(pos, {name = mesecon:get_conductor_on(node, rulename), param2 = node.param2})
+
+		for _, rule in ipairs(mesecon:rule2meta(rulename, rules)) do
+			local np = mesecon:addPosRule(pos, rule)
+			if(minetest.get_node(np).name == "ignore") then
+				-- try turning on later again
+				mesecon.queue:add_action(
+					np, "turnon", {rulename, recdepth + 1}, nil, true)
+			else
+				local rulenames = mesecon:rules_link_rule_all(pos, rule)
+
+				for _, rulename in ipairs(rulenames) do
+					mesecon:turnon(np, rulename, recdepth + 1)
+				end
+			end
+		end
+	elseif mesecon:is_effector(node.name) then
+		mesecon:changesignal(pos, node, rulename, mesecon.state.on, recdepth)
+		if mesecon:is_effector_off(node.name) then
+			mesecon:activate(pos, node, rulename, recdepth)
+		end
+	end
+end
+
+mesecon.queue:add_function("turnon", function (pos, rulename, recdepth)
+	mesecon:turnon(pos, rulename, recdepth)
+end)
+
+function mesecon:turnoff(pos, rulename, recdepth)
+	recdepth = recdepth or 2
+	local node = minetest.get_node(pos)
+
+	if(node.name == "ignore") then
+		-- try turning on later again
+		mesecon.queue:add_action(
+			pos, "turnoff", {rulename, recdepth + 1}, nil, true)
+	end
+
+	if mesecon:is_conductor_on(node, rulename) then
+		local rules = mesecon:conductor_get_rules(node)
+		minetest.swap_node(pos, {name = mesecon:get_conductor_off(node, rulename), param2 = node.param2})
+
+		for _, rule in ipairs(mesecon:rule2meta(rulename, rules)) do
+			local np = mesecon:addPosRule(pos, rule)
+			if(minetest.get_node(np).name == "ignore") then
+				-- try turning on later again
+				mesecon.queue:add_action(
+					np, "turnoff", {rulename, recdepth + 1}, nil, true)
+			else
+				local rulenames = mesecon:rules_link_rule_all(pos, rule)
+
+				for _, rulename in ipairs(rulenames) do
+					mesecon:turnoff(np, rulename, recdepth + 1)
+				end
+			end
+		end
+	elseif mesecon:is_effector(node.name) then
+		mesecon:changesignal(pos, node, rulename, mesecon.state.off, recdepth)
+		if mesecon:is_effector_on(node.name)
+		and not mesecon:is_powered(pos) then
+			mesecon:deactivate(pos, node, rulename, recdepth + 1)
+		end
+	end
+end
+
+mesecon.queue:add_function("turnoff", function (pos, rulename, recdepth)
+	mesecon:turnoff(pos, rulename, recdepth)
+end)
+
+
+function mesecon:connected_to_receptor(pos, rulename)
+	local node = minetest.get_node(pos)
+
+	-- Check if conductors around are connected
+	local rules = mesecon:get_any_inputrules(node)
+	if not rules then return false end
+
+	for _, rule in ipairs(mesecon:rule2meta(rulename, rules)) do
+		local rulenames = mesecon:rules_link_rule_all_inverted(pos, rule)
+		for _, rname in ipairs(rulenames) do
+			local np = mesecon:addPosRule(pos, rname)
+			if mesecon:find_receptor_on(np, {}, mesecon:invertRule(rname)) then
+				return true
+			end
+		end
+	end
+
+	return false
+end
+
+function mesecon:find_receptor_on(pos, checked, rulename)
+	local node = minetest.get_node(pos)
+
+	if mesecon:is_receptor_on(node.name) then
+		-- add current position to checked
+		table.insert(checked, {x=pos.x, y=pos.y, z=pos.z})
+		return true
+	end
+
+	if mesecon:is_conductor(node.name) then
+		local rules = mesecon:conductor_get_rules(node)
+		local metaindex = mesecon:rule2metaindex(rulename, rules)
+		-- find out if node has already been checked (to prevent from endless loop)
+		for _, cp in ipairs(checked) do
+			if mesecon:cmpPos(cp, pos) and cp.metaindex == metaindex then
+				return false, checked
+			end
+		end
+		-- add current position to checked
+		table.insert(checked, {x=pos.x, y=pos.y, z=pos.z, metaindex = metaindex})
+		for _, rule in ipairs(mesecon:rule2meta(rulename, rules)) do
+			local rulenames = mesecon:rules_link_rule_all_inverted(pos, rule)
+			for _, rname in ipairs(rulenames) do
+				local np = mesecon:addPosRule(pos, rname)
+				if mesecon:find_receptor_on(np, checked, mesecon:invertRule(rname)) then
+					return true
+				end
+			end
+		end
+	else
+		-- find out if node has already been checked (to prevent from endless loop)
+		for _, cp in ipairs(checked) do
+			if mesecon:cmpPos(cp, pos) then
+				return false, checked
+			end
+		end
+		table.insert(checked, {x=pos.x, y=pos.y, z=pos.z})
+	end
+
+	return false
+end
+
+function mesecon:rules_link(output, input, dug_outputrules) --output/input are positions (outputrules optional, used if node has been dug), second return value: the name of the affected input rule
+	local outputnode = minetest.get_node(output)
+	local inputnode = minetest.get_node(input)
+	local outputrules = dug_outputrules or mesecon:get_any_outputrules (outputnode)
+	local inputrules = mesecon:get_any_inputrules (inputnode)
+	if not outputrules or not inputrules then
+		return
+	end
+
+	for _, outputrule in ipairs(mesecon:flattenrules(outputrules)) do
+		-- Check if output sends to input
+		if mesecon:cmpPos(mesecon:addPosRule(output, outputrule), input) then
+			for _, inputrule in ipairs(mesecon:flattenrules(inputrules)) do
+				-- Check if input accepts from output
+				if  mesecon:cmpPos(mesecon:addPosRule(input, inputrule), output) then
+					if inputrule.sx == nil or outputrule.sx == nil or mesecon:cmpSpecial(inputrule, outputrule) then
+						return true, inputrule
+					end
+				end
+			end
+		end
+	end
+	return false
+end
+
+function mesecon:rules_link_rule_all(output, rule) --output/input are positions (outputrules optional, used if node has been dug), second return value: affected input rules
+	local input = mesecon:addPosRule(output, rule)
+	local inputnode = minetest.get_node(input)
+	local inputrules = mesecon:get_any_inputrules (inputnode)
+	if not inputrules then
+		return {}
+	end
+	local rules = {}
+	
+	for _, inputrule in ipairs(mesecon:flattenrules(inputrules)) do
+		-- Check if input accepts from output
+		if  mesecon:cmpPos(mesecon:addPosRule(input, inputrule), output) then
+			if inputrule.sx == nil or rule.sx == nil or mesecon:cmpSpecial(inputrule, rule) then
+				rules[#rules+1] = inputrule
+			end
+		end
+	end
+	return rules
+end
+
+function mesecon:rules_link_rule_all_inverted(input, rule)
+	--local irule = mesecon:invertRule(rule)
+	local output = mesecon:addPosRule(input, rule)
+	local outputnode = minetest.get_node(output)
+	local outputrules = mesecon:get_any_outputrules (outputnode)
+	if not outputrules then
+		return {}
+	end
+	local rules = {}
+	
+	for _, outputrule in ipairs(mesecon:flattenrules(outputrules)) do
+		if  mesecon:cmpPos(mesecon:addPosRule(output, outputrule), input) then
+			if outputrule.sx == nil or rule.sx == nil or mesecon:cmpSpecial(outputrule, rule) then
+				rules[#rules+1] = mesecon:invertRule(outputrule)
+			end
+		end
+	end
+	return rules
+end
+
+function mesecon:rules_link_anydir(pos1, pos2)
+	return mesecon:rules_link(pos1, pos2) or mesecon:rules_link(pos2, pos1)
+end
+
+function mesecon:is_powered(pos, rule)
+	local node = minetest.get_node(pos)
+	local rules = mesecon:get_any_inputrules(node)
+	if not rules then return false end
+
+	if not rule then
+		for _, rule in ipairs(mesecon:flattenrules(rules)) do
+			local rulenames = mesecon:rules_link_rule_all_inverted(pos, rule)
+			for _, rname in ipairs(rulenames) do
+				local np = mesecon:addPosRule(pos, rname)
+				local nn = minetest.get_node(np)
+				if (mesecon:is_conductor_on (nn, mesecon:invertRule(rname)) or mesecon:is_receptor_on (nn.name)) then
+					return true
+				end
+			end
+		end
+	else
+		local rulenames = mesecon:rules_link_rule_all_inverted(pos, rule)
+		for _, rname in ipairs(rulenames) do
+			local np = mesecon:addPosRule(pos, rname)
+			local nn = minetest.get_node(np)
+			if (mesecon:is_conductor_on (nn, mesecon:invertRule(rname)) or mesecon:is_receptor_on (nn.name)) then
+				return true
+			end
+		end
+	end
+	
+	return false
+end
+
+--Rules rotation Functions:
+function mesecon:rotate_rules_right(rules)
+	local nr = {}
+	for i, rule in ipairs(rules) do
+		if rule.sx then
+			table.insert(nr, {
+				x = -rule.z, 
+				y =  rule.y, 
+				z =  rule.x,
+				sx = -rule.sz, 
+				sy =  rule.sy, 
+				sz =  rule.sx})
+		else
+			table.insert(nr, {
+				x = -rule.z, 
+				y =  rule.y, 
+				z =  rule.x})
+		end
+	end
+	return nr
+end
+
+function mesecon:rotate_rules_left(rules)
+	local nr = {}
+	for i, rule in ipairs(rules) do
+		if rule.sx then
+			table.insert(nr, {
+				x =  rule.z, 
+				y =  rule.y, 
+				z = -rule.x,
+				sx =  rule.sz, 
+				sy =  rule.sy, 
+				sz = -rule.sx})
+		else
+			table.insert(nr, {
+				x =  rule.z, 
+				y =  rule.y, 
+				z = -rule.x})
+		end
+	end
+	return nr
+end
+
+function mesecon:rotate_rules_down(rules)
+	local nr = {}
+	for i, rule in ipairs(rules) do
+		if rule.sx then
+			table.insert(nr, {
+				x = -rule.y, 
+				y =  rule.x, 
+				z =  rule.z,
+				sx = -rule.sy, 
+				sy =  rule.sx, 
+				sz =  rule.sz})
+		else
+			table.insert(nr, {
+				x = -rule.y, 
+				y =  rule.x, 
+				z =  rule.z})
+		end
+	end
+	return nr
+end
+
+function mesecon:rotate_rules_up(rules)
+	local nr = {}
+	for i, rule in ipairs(rules) do
+		if rule.sx then
+			table.insert(nr, {
+				x =  rule.y, 
+				y = -rule.x, 
+				z =  rule.z,
+				sx =  rule.sy, 
+				sy = -rule.sx, 
+				sz =  rule.sz})
+		else
+			table.insert(nr, {
+				x =  rule.y, 
+				y = -rule.x, 
+				z =  rule.z})
+		end
+	end
+	return nr
+end

mods/mesecons/mesecons/legacy.lua

@@ -0,0 +1,32 @@
+minetest.swap_node = minetest.swap_node or function(pos, node)
+	local data = minetest.get_meta(pos):to_table()
+	minetest.add_node(pos, node)
+	minetest.get_meta(pos):from_table(data)
+end
+
+local rules = {}
+rules.a = {x = -1, y = 0, z =  0, name="A"}
+rules.b = {x =  0, y = 0, z =  1, name="B"}
+rules.c = {x =  1, y = 0, z =  0, name="C"}
+rules.d = {x =  0, y = 0, z = -1, name="D"}
+
+function legacy_update_ports(pos)
+	local meta = minetest.get_meta(pos)
+	L = {
+		a = mesecon:is_power_on(mesecon:addPosRule(pos, rules.a),
+			mesecon:invertRule(rules.a)) and
+			mesecon:rules_link(mesecon:addPosRule(pos, rules.a), pos),
+		b = mesecon:is_power_on(mesecon:addPosRule(pos, rules.b),
+			mesecon:invertRule(rules.b)) and
+			mesecon:rules_link(mesecon:addPosRule(pos, rules.b), pos),
+		c = mesecon:is_power_on(mesecon:addPosRule(pos, rules.c),
+			mesecon:invertRule(rules.c)) and
+			mesecon:rules_link(mesecon:addPosRule(pos, rules.c), pos),
+		d = mesecon:is_power_on(mesecon:addPosRule(pos, rules.d),
+			mesecon:invertRule(rules.d)) and
+			mesecon:rules_link(mesecon:addPosRule(pos, rules.d), pos),
+	}
+	local n = (L.a and 1 or 0) + (L.b and 2 or 0) + (L.c and 4 or 0) + (L.d and 8 or 0) + 1
+	meta:set_int("real_portstates", n)
+	return L
+end

mods/mesecons/mesecons/oldwires.lua

@@ -0,0 +1,38 @@
+minetest.register_node("mesecons:mesecon_off", {
+	drawtype = "raillike",
+	tiles = {"jeija_mesecon_off.png", "jeija_mesecon_curved_off.png", "jeija_mesecon_t_junction_off.png", "jeija_mesecon_crossing_off.png"},
+	inventory_image = "jeija_mesecon_off.png",
+	wield_image = "jeija_mesecon_off.png",
+	paramtype = "light",
+	is_ground_content = true,
+	walkable = false,
+	selection_box = {
+		type = "fixed",
+		fixed = {-0.5, -0.5, -0.5, 0.5, -0.45, 0.5},
+	},
+	groups = {dig_immediate=3, mesecon=1, mesecon_conductor_craftable=1},
+    	description="Mesecons",
+	mesecons = {conductor={
+		state = mesecon.state.off,
+		onstate = "mesecons:mesecon_on"
+	}}
+})
+
+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,
+	walkable = false,
+	selection_box = {
+		type = "fixed",
+		fixed = {-0.5, -0.5, -0.5, 0.5, -0.45, 0.5},
+	},
+	groups = {dig_immediate=3, not_in_creaive_inventory=1, mesecon=1},
+	drop = "mesecons:mesecon_off 1",
+	light_source = LIGHT_MAX-11,
+	mesecons = {conductor={
+		state = mesecon.state.on,
+		offstate = "mesecons:mesecon_off"
+	}}
+})

mods/mesecons/mesecons/presets.lua

@@ -0,0 +1,45 @@
+mesecon.rules = {}
+mesecon.state = {}
+
+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},
+ {x=1,  y=1,  z=0},
+ {x=1,  y=-1, z=0},
+ {x=-1, y=1,  z=0},
+ {x=-1, y=-1, z=0},
+ {x=0,  y=1,  z=1},
+ {x=0,  y=-1, z=1},
+ {x=0,  y=1,  z=-1},
+ {x=0,  y=-1, z=-1}}
+
+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}}
+
+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}}
+ 
+mesecon.rules.buttonlike_get = function(node)
+	local rules = mesecon.rules.buttonlike
+	if node.param2 == 2 then
+		rules=mesecon:rotate_rules_left(rules)
+	elseif node.param2 == 3 then
+		rules=mesecon:rotate_rules_right(mesecon:rotate_rules_right(rules))
+	elseif node.param2 == 0 then
+		rules=mesecon:rotate_rules_right(rules)
+	end
+	return rules
+end
+
+mesecon.state.on = "on"
+mesecon.state.off = "off"

mods/mesecons/mesecons/services.lua

@@ -0,0 +1,76 @@
+-- Dig and place services
+
+mesecon.on_placenode = function (pos, node)
+	-- Receptors: Send on signal when active
+	if mesecon:is_receptor_on(node.name) then
+		mesecon:receptor_on(pos, mesecon:receptor_get_rules(node))
+	end
+
+	-- Conductors: Send turnon signal when powered or replace by respective offstate conductor
+	-- if placed conductor is an onstate one
+	if mesecon:is_conductor(node.name) then
+		if mesecon:is_powered(pos) then
+			-- also call receptor_on if itself is powered already, so that neighboring
+			-- conductors will be activated (when pushing an on-conductor with a piston)
+			mesecon:turnon (pos)
+			mesecon:receptor_on (pos, mesecon:conductor_get_rules(node))
+		elseif mesecon:is_conductor_off(node.name) then
+			minetest.swap_node(pos, {name = mesecon:get_conductor_off(node)})
+		end
+	end
+
+	-- Effectors: Send changesignal and activate or deactivate
+	if mesecon:is_effector(node.name) then
+		if mesecon:is_powered(pos) then
+			mesecon:changesignal(pos, node, mesecon:effector_get_rules(node), "on", 1)
+			mesecon:activate(pos, node, nil, 1)
+		else
+			mesecon:changesignal(pos, node, mesecon:effector_get_rules(node), "off", 1)
+			mesecon:deactivate(pos, node, nil, 1)
+		end
+	end
+end
+
+mesecon.on_dignode = function (pos, node)
+	if mesecon:is_conductor_on(node) then
+		mesecon:receptor_off(pos, mesecon:conductor_get_rules(node))
+	elseif mesecon:is_receptor_on(node.name) then
+		mesecon:receptor_off(pos, mesecon:receptor_get_rules(node))
+	end
+end
+
+minetest.register_on_placenode(mesecon.on_placenode)
+minetest.register_on_dignode(mesecon.on_dignode)
+
+-- Overheating service for fast circuits
+
+-- 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 < OVERHEAT_MAX then
+		mesecon.queue:add_action(pos, "cooldown", {}, 1, nil, 0)
+	else
+		return true
+	end
+
+	return false
+end
+
+
+mesecon.queue:add_function("cooldown", function (pos)
+	if minetest.get_item_group(minetest.get_node(pos).name, "overheat") == 0 then
+		return -- node has been moved, this one does not use overheating - ignore
+	end
+
+	local meta = minetest.get_meta(pos)
+	local heat = meta:get_int("heat")
+
+	if (heat > 0) then
+		meta:set_int("heat", heat - 1)
+	end
+end)

mods/mesecons/mesecons/settings.lua

@@ -0,0 +1,12 @@
+-- SETTINGS
+BLINKY_PLANT_INTERVAL = 3
+NEW_STYLE_WIRES  = true  	-- true = new nodebox wires, false = old raillike wires
+PRESSURE_PLATE_INTERVAL = 0.1
+OBJECT_DETECTOR_RADIUS = 6
+PISTON_MAXIMUM_PUSH = 15
+MOVESTONE_MAXIMUM_PUSH = 100
+MESECONS_RESUMETIME = 4		-- time to wait when starting the server before
+				-- processing the ActionQueue, don't set this too low
+OVERHEAT_MAX = 20		-- maximum heat of any component that directly sends an output
+				-- signal when the input changes (e.g. luacontroller, gates)
+				-- Unit: actions per second, checks are every 1 second