From bd749ec4d41e90fc5b9d0217f09892082ab5e256 Mon Sep 17 00:00:00 2001
From: Jeija <norrepli@gmail.com>
Date: Sun, 13 Jan 2013 00:18:25 +0100
Subject: Add luacontroller, a microcontroller that you can code in lua. It
 still misses some functionality such as a persistent memory and a timer, but
 that is subject to change. The code runs in a sandbox. Speaking long term
 this will hopefully replace the old controller.

---
 mesecons_luacontroller/depends.txt                 |   1 +
 mesecons_luacontroller/init.lua                    | 303 +++++++++++++++++++++
 mesecons_textures/textures/jeija_close_window.png  | Bin 0 -> 7701 bytes
 .../textures/jeija_luacontroller_LED_A.png         | Bin 0 -> 3541 bytes
 .../textures/jeija_luacontroller_LED_B.png         | Bin 0 -> 3537 bytes
 .../textures/jeija_luacontroller_LED_C.png         | Bin 0 -> 3537 bytes
 .../textures/jeija_luacontroller_LED_D.png         | Bin 0 -> 3537 bytes
 .../textures/jeija_luacontroller_top.png           | Bin 0 -> 11913 bytes
 8 files changed, 304 insertions(+)
 create mode 100644 mesecons_luacontroller/depends.txt
 create mode 100644 mesecons_luacontroller/init.lua
 create mode 100644 mesecons_textures/textures/jeija_close_window.png
 create mode 100644 mesecons_textures/textures/jeija_luacontroller_LED_A.png
 create mode 100644 mesecons_textures/textures/jeija_luacontroller_LED_B.png
 create mode 100644 mesecons_textures/textures/jeija_luacontroller_LED_C.png
 create mode 100644 mesecons_textures/textures/jeija_luacontroller_LED_D.png
 create mode 100644 mesecons_textures/textures/jeija_luacontroller_top.png

diff --git a/mesecons_luacontroller/depends.txt b/mesecons_luacontroller/depends.txt
new file mode 100644
index 0000000..acaa924
--- /dev/null
+++ b/mesecons_luacontroller/depends.txt
@@ -0,0 +1 @@
+mesecons
diff --git a/mesecons_luacontroller/init.lua b/mesecons_luacontroller/init.lua
new file mode 100644
index 0000000..e3aa6fd
--- /dev/null
+++ b/mesecons_luacontroller/init.lua
@@ -0,0 +1,303 @@
+-- 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, ports, vports): activates/deactivates the mesecons according to the portstates (helper for action)
+-- action(pos, ports): Applies new portstates to a luacontroller at pos
+-- 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.env to it.
+
+local BASENAME = "mesecons_luacontroller:luacontroller"
+
+local rules = {}
+rules.a = {x = -1, y = 0, z =  0}
+rules.b = {x =  0, y = 0, z =  1}
+rules.c = {x =  1, y = 0, z =  0}
+rules.d = {x =  0, y = 0, z = -1}
+
+local get_real_portstates = function(pos) -- determine if ports are powered (by itself or from outside)
+	ports = {
+		a = mesecon:is_power_on(mesecon:addPosRule(pos, rules.a))
+			and mesecon:rules_link(mesecon:addPosRule(pos, rules.a), pos),
+		b = mesecon:is_power_on(mesecon:addPosRule(pos, rules.b))
+			and mesecon:rules_link(mesecon:addPosRule(pos, rules.b), pos),
+		c = mesecon:is_power_on(mesecon:addPosRule(pos, rules.c))
+			and mesecon:rules_link(mesecon:addPosRule(pos, rules.c), pos),
+		d = mesecon:is_power_on(mesecon:addPosRule(pos, rules.d))
+			and mesecon:rules_link(mesecon:addPosRule(pos, rules.d), pos),
+	}
+	return ports
+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 action_setports = function (pos, ports, vports)
+	if vports.a ~= ports.a then
+		if ports.a then mesecon:receptor_on(pos, {rules.a})
+		else mesecon:receptor_off(pos, {rules.a}) end
+	end
+	if vports.b ~= ports.b then
+		if ports.b then mesecon:receptor_on(pos, {rules.b})
+		else mesecon:receptor_off(pos, {rules.b}) end
+	end
+	if vports.c ~= ports.c then
+		if ports.c then mesecon:receptor_on(pos, {rules.c})
+		else mesecon:receptor_off(pos, {rules.c}) end
+	end
+	if vports.d ~= ports.d then
+		if ports.d then mesecon:receptor_on(pos, {rules.d})
+		else mesecon:receptor_off(pos, {rules.d}) end
+	end
+end
+
+local action = function (pos, ports)
+	local vports = minetest.registered_nodes[minetest.env:get_node(pos).name].virtual_portstates;
+	local name = BASENAME
+		..tonumber(ports.d and 1 or 0)
+		..tonumber(ports.c and 1 or 0)
+		..tonumber(ports.b and 1 or 0)
+		..tonumber(ports.a and 1 or 0)
+	mesecon:swap_node(pos, name)
+
+	action_setports (pos, ports, vports)
+end
+
+-- Overheat Stuff
+local heat = function (meta) -- warm up
+	h = meta:get_int("heat")
+	if h ~= nil then
+		meta:set_int("heat", h + 1)
+	end
+end
+
+local cool = function (meta) -- cool down after a while
+	h = meta:get_int("heat")
+	if h ~= nil then
+		meta:set_int("heat", h - 1)
+	end
+end
+
+local overheat = function (meta) -- determine if too hot
+	h = meta:get_int("heat")
+	if h == nil then return true end -- if nil then overheat
+	if h > 30 then 
+		return true
+	else 
+		return false 
+	end
+end
+
+local overheat_off = function(pos)
+	rules = mesecon:get_rules("mesecons_microcontroller:microcontroller1111")
+	mesecon:receptor_off(pos, rules)
+end
+
+local update = function (pos)
+	local meta = minetest.env:get_meta(pos)
+	code = meta:get_string("code")
+
+	-- Clean code
+	local prohibited = {"while", "for", "repeat", "until"}
+	for _, p in ipairs(prohibited) do
+		if string.find(code, p) then
+			return "Prohibited command: "..p
+		end
+	end
+
+	-- Gather variables for the environment
+	local vports = minetest.registered_nodes[minetest.env: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)
+
+	local env = {	print = print,
+				selfpos = pos,
+				dump = dump,
+				pin = merge_portstates(vports, rports),
+				port = vports}
+
+	-- Create Sandbox
+	if code:byte(1) == 27 then
+		return "You Hacker You! Don't use binary code!"
+	end
+	local f, msg = loadstring(code)
+	if not f then return msg end
+	setfenv(f, env)
+	success, msg = pcall(f)
+
+	-- Overheat protection
+	heat(meta)
+	minetest.after(0.5, cool, meta)
+	if overheat(meta) then
+		minetest.env:remove_node(pos)
+		minetest.after(0.2, overheat_off, pos) -- wait for pending operations
+		minetest.env:add_item(pos, BASENAME.."0000")
+		return
+	end
+
+	-- Actually set the ports
+	if not success then
+		return msg
+	else
+		action(pos, env.port)
+	end
+end
+
+local reset_meta = function(pos, code, errmsg)
+	local meta = minetest.env:get_meta(pos)
+	code = code or "";
+	errmsg = errmsg or "";
+	errmsg = string.gsub(errmsg, "%[", "(") -- would otherwise
+	errmsg = string.gsub(errmsg, "%]", ")") -- corrupt formspec
+	meta:set_string("code", code)
+	meta:set_string("formspec", "size[10,8]"..
+		"textarea[0.2,0.4;10.2,5;code;Code:;"..code.."]"..
+		"button[3.5,7.5;2,0;program;Program]"..
+		"image_button_exit[9.62,-0.35;0.7,0.7;jeija_close_window.png;exit;]"..
+		"label[0.1,4.5;"..errmsg.."]")
+	meta:set_int("heat", 0)
+end
+
+local reset = function (pos)
+	action(pos, {a=false, b=false, c=false, d=false})
+end
+
+--        ______
+--       |
+-- |   | |
+-- |___| |        __       ___  _   __         _  _
+-- |     |       |  | |\ |  |  |_| |  | |  |  |_ |_|
+-- |     |______ |__| | \|  |  | \ |__| |_ |_ |_ |\
+--
+-- Actually register all the stuff:
+
+for a = 0, 1 do
+for b = 0, 1 do
+for c = 0, 1 do
+for d = 0, 1 do
+local nodename = BASENAME..tostring(d)..tostring(c)..tostring(b)..tostring(a)
+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}
+else
+	groups = {dig_immediate=2}
+end
+
+local output_rules={}
+if (a == 1) then table.insert(output_rules, rules.a) end
+if (b == 1) then table.insert(output_rules, rules.b) end
+if (c == 1) then table.insert(output_rules, rules.c) end
+if (d == 1) then table.insert(output_rules, rules.d) end
+
+local input_rules={}
+if (a == 0) then table.insert(input_rules, rules.a) end
+if (b == 0) then table.insert(input_rules, rules.b) end
+if (c == 0) then table.insert(input_rules, rules.c) end
+if (d == 0) then table.insert(input_rules, rules.d) end
+
+local mesecons = {effector =
+{
+	rules = input_rules,
+	action_change = function (pos)
+		update(pos)
+	end
+}}
+if nodename ~= BASENAME.."0000" then
+	mesecons.receptor = {
+		state = mesecon.state.on,
+		rules = output_rules
+	}
+end
+
+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 },
+	}
+
+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"
+		},
+
+	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)
+		reset(pos)
+		reset_meta(pos, fields.code)
+		local err = update(pos)
+		if err then print(err) end
+		reset_meta(pos, fields.code, err)
+	end,
+	mesecons = mesecons,
+	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,
+})
+end
+end
+end
+end
+
+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', ''},
+	}
+})
diff --git a/mesecons_textures/textures/jeija_close_window.png b/mesecons_textures/textures/jeija_close_window.png
new file mode 100644
index 0000000..eb89179
Binary files /dev/null and b/mesecons_textures/textures/jeija_close_window.png differ
diff --git a/mesecons_textures/textures/jeija_luacontroller_LED_A.png b/mesecons_textures/textures/jeija_luacontroller_LED_A.png
new file mode 100644
index 0000000..a187e8e
Binary files /dev/null and b/mesecons_textures/textures/jeija_luacontroller_LED_A.png differ
diff --git a/mesecons_textures/textures/jeija_luacontroller_LED_B.png b/mesecons_textures/textures/jeija_luacontroller_LED_B.png
new file mode 100644
index 0000000..738ba96
Binary files /dev/null and b/mesecons_textures/textures/jeija_luacontroller_LED_B.png differ
diff --git a/mesecons_textures/textures/jeija_luacontroller_LED_C.png b/mesecons_textures/textures/jeija_luacontroller_LED_C.png
new file mode 100644
index 0000000..abe0fe6
Binary files /dev/null and b/mesecons_textures/textures/jeija_luacontroller_LED_C.png differ
diff --git a/mesecons_textures/textures/jeija_luacontroller_LED_D.png b/mesecons_textures/textures/jeija_luacontroller_LED_D.png
new file mode 100644
index 0000000..cc10170
Binary files /dev/null and b/mesecons_textures/textures/jeija_luacontroller_LED_D.png differ
diff --git a/mesecons_textures/textures/jeija_luacontroller_top.png b/mesecons_textures/textures/jeija_luacontroller_top.png
new file mode 100644
index 0000000..3128230
Binary files /dev/null and b/mesecons_textures/textures/jeija_luacontroller_top.png differ
-- 
cgit v1.2.3


From e297a02ec290d68fbb386054d5f8a5f8d2c2ba3e Mon Sep 17 00:00:00 2001
From: Jeija <norrepli@gmail.com>
Date: Sun, 13 Jan 2013 11:05:04 +0100
Subject: Implement a memory for the controller (accesible via mem.) and
 cleanup code Based on PilzAdam's code.

---
 mesecons_luacontroller/init.lua | 94 ++++++++++++++++++++++++++++++++---------
 1 file changed, 73 insertions(+), 21 deletions(-)

diff --git a/mesecons_luacontroller/init.lua b/mesecons_luacontroller/init.lua
index e3aa6fd..f24a8ad 100644
--- a/mesecons_luacontroller/init.lua
+++ b/mesecons_luacontroller/init.lua
@@ -26,6 +26,11 @@ rules.b = {x =  0, y = 0, z =  1}
 rules.c = {x =  1, y = 0, z =  0}
 rules.d = {x =  0, y = 0, z = -1}
 
+------------------
+-- Action stuff --
+------------------
+-- These helpers are required to set the portstates of the luacontroller
+
 local get_real_portstates = function(pos) -- determine if ports are powered (by itself or from outside)
 	ports = {
 		a = mesecon:is_power_on(mesecon:addPosRule(pos, rules.a))
@@ -80,7 +85,10 @@ local action = function (pos, ports)
 	action_setports (pos, ports, vports)
 end
 
--- Overheat Stuff
+--------------------
+-- Overheat stuff --
+--------------------
+
 local heat = function (meta) -- warm up
 	h = meta:get_int("heat")
 	if h ~= nil then
@@ -106,14 +114,14 @@ local overheat = function (meta) -- determine if too hot
 end
 
 local overheat_off = function(pos)
-	rules = mesecon:get_rules("mesecons_microcontroller:microcontroller1111")
-	mesecon:receptor_off(pos, rules)
+	mesecon:receptor_off(pos, mesecon.rules.flat)
 end
 
-local update = function (pos)
-	local meta = minetest.env:get_meta(pos)
-	code = meta:get_string("code")
+-------------------
+-- Parsing stuff --
+-------------------
 
+local code_prohibited = function(code)
 	-- Clean code
 	local prohibited = {"while", "for", "repeat", "until"}
 	for _, p in ipairs(prohibited) do
@@ -121,27 +129,36 @@ local update = function (pos)
 			return "Prohibited command: "..p
 		end
 	end
+end
+
+local safeprint = function(param)
+	print(dump(param))
+end
 
+local create_environment = function(pos, mem)
 	-- Gather variables for the environment
 	local vports = minetest.registered_nodes[minetest.env: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)
 
-	local env = {	print = print,
-				selfpos = pos,
-				dump = dump,
-				pin = merge_portstates(vports, rports),
-				port = vports}
+	return {	print = safeprint,
+			pin = merge_portstates(vports, rports),
+			port = vports,
+			mem = mem}
+end
 
+local create_sandbox = function (code, env)
 	-- Create Sandbox
 	if code:byte(1) == 27 then
-		return "You Hacker You! Don't use binary code!"
+		return _, "You Hacker You! Don't use binary code!"
 	end
-	local f, msg = loadstring(code)
-	if not f then return msg end
+	f, msg = loadstring(code)
+	if not f then return _, msg end
 	setfenv(f, env)
-	success, msg = pcall(f)
+	return f
+end
 
+local do_overheat = function (pos, meta)
 	-- Overheat protection
 	heat(meta)
 	minetest.after(0.5, cool, meta)
@@ -151,13 +168,40 @@ local update = function (pos)
 		minetest.env:add_item(pos, BASENAME.."0000")
 		return
 	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", minetest.serialize(mem))
+end
+
+----------------------
+-- Parsing function --
+----------------------
+
+local update = function (pos)
+	local meta = minetest.env:get_meta(pos)
+
+	local mem  = load_memory(meta)
+	local code = meta:get_string("code")
+
+	local prohibited = code_prohibited(code)
+	if 	prohibited then return prohibited end
+	local env = create_environment(pos, mem)
+
+	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
+
+	do_overheat(pos, meta)
+	save_memory(meta, mem)
 
 	-- Actually set the ports
-	if not success then
-		return msg
-	else
-		action(pos, env.port)
-	end
+	action(pos, env.port)
 end
 
 local reset_meta = function(pos, code, errmsg)
@@ -186,7 +230,10 @@ end
 -- |     |       |  | |\ |  |  |_| |  | |  |  |_ |_|
 -- |     |______ |__| | \|  |  | \ |__| |_ |_ |_ |\
 --
--- Actually register all the stuff:
+
+-----------------------
+-- Node Registration --
+-----------------------
 
 for a = 0, 1 do
 for b = 0, 1 do
@@ -293,6 +340,10 @@ end
 end
 end
 
+------------------------
+-- Craft Registration --
+------------------------
+
 minetest.register_craft({
 	output = BASENAME.."0000 2",
 	recipe = {
@@ -301,3 +352,4 @@ minetest.register_craft({
 		{'group:mesecon_conductor_craftable', 'group:mesecon_conductor_craftable', ''},
 	}
 })
+
-- 
cgit v1.2.3


From 240fb83e8b55c66ec223fabe5877257648a0f84e Mon Sep 17 00:00:00 2001
From: Jeija <norrepli@gmail.com>
Date: Sun, 13 Jan 2013 17:33:16 +0100
Subject: Implement interrupt(time, iid): The whole code is called again after
 a certain amount of time. Whenever it is called, an event is set. Possible
 events are: program, interrupt, on and off It also contains additional
 information (on/off -> event.in; interrupt -> event.iid) iid must be an
 integer or string value, otherwise the interrupt is not active

---
 mesecons_luacontroller/init.lua | 172 +++++++++++++++++++++++++++-------------
 1 file changed, 119 insertions(+), 53 deletions(-)

diff --git a/mesecons_luacontroller/init.lua b/mesecons_luacontroller/init.lua
index f24a8ad..c125ec9 100644
--- a/mesecons_luacontroller/init.lua
+++ b/mesecons_luacontroller/init.lua
@@ -3,7 +3,7 @@
 -- newport = merge_portstates(state1, state2): just does result = state1 or state2 for every port
 -- action_setports(pos, ports, vports): activates/deactivates the mesecons according to the portstates (helper for action)
 -- action(pos, ports): Applies new portstates to a luacontroller at pos
--- update(pos): updates the controller at pos by executing the code
+-- 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
 --
@@ -21,10 +21,10 @@
 local BASENAME = "mesecons_luacontroller:luacontroller"
 
 local rules = {}
-rules.a = {x = -1, y = 0, z =  0}
-rules.b = {x =  0, y = 0, z =  1}
-rules.c = {x =  1, y = 0, z =  0}
-rules.d = {x =  0, y = 0, z = -1}
+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 --
@@ -54,35 +54,58 @@ local merge_portstates = function (ports, vports)
 	return npo
 end
 
-local action_setports = function (pos, ports, vports)
-	if vports.a ~= ports.a then
-		if ports.a then mesecon:receptor_on(pos, {rules.a})
-		else mesecon:receptor_off(pos, {rules.a}) end
+local action_setports_on = function (pos, ports, vports)
+	if vports.a ~= ports.a and ports.a then
+		mesecon:receptor_on(pos, {rules.a})
 	end
-	if vports.b ~= ports.b then
-		if ports.b then mesecon:receptor_on(pos, {rules.b})
-		else mesecon:receptor_off(pos, {rules.b}) end
+	if vports.b ~= ports.b and ports.b then
+		mesecon:receptor_on(pos, {rules.b})
 	end
-	if vports.c ~= ports.c then
-		if ports.c then mesecon:receptor_on(pos, {rules.c})
-		else mesecon:receptor_off(pos, {rules.c}) end
+	if vports.c ~= ports.c and ports.c then
+		mesecon:receptor_on(pos, {rules.c})
 	end
-	if vports.d ~= ports.d then
-		if ports.d then mesecon:receptor_on(pos, {rules.d})
-		else mesecon:receptor_off(pos, {rules.d}) end
+	if vports.d ~= ports.d and ports.d then
+		mesecon:receptor_on(pos, {rules.d})
+	end
+end
+
+local action_setports_off = function (pos, ports, vports)
+	local todo = {}
+	if vports.a ~= ports.a and not ports.a then
+		table.insert(todo, mesecon:addPosRule(pos, rules.a))
+	end
+	if vports.b ~= ports.b and not ports.b then
+		table.insert(todo, mesecon:addPosRule(pos, rules.b))
+	end
+	if vports.c ~= ports.c and not ports.c then
+		table.insert(todo, mesecon:addPosRule(pos, rules.c))
+	end
+	if vports.d ~= ports.d and not ports.d then
+		table.insert(todo, mesecon:addPosRule(pos, rules.d))
+	end
+
+	for _, t in ipairs(todo) do
+		local link, rulename = mesecon:rules_link(pos, t)
+		if link then
+			mesecon:turnoff(t, rulename)
+		end
 	end
 end
 
 local action = function (pos, ports)
-	local vports = minetest.registered_nodes[minetest.env:get_node(pos).name].virtual_portstates;
-	local name = BASENAME
+	local name = minetest.env:get_node(pos).name
+	local vports = minetest.registered_nodes[name].virtual_portstates
+	local newname = BASENAME
 		..tonumber(ports.d and 1 or 0)
 		..tonumber(ports.c and 1 or 0)
 		..tonumber(ports.b and 1 or 0)
 		..tonumber(ports.a and 1 or 0)
-	mesecon:swap_node(pos, name)
 
-	action_setports (pos, ports, vports)
+	if name ~= newname and vports then
+		action_setports_off (pos, ports, vports)
+		mesecon:swap_node(pos, newname)
+		action_setports_on (pos, ports, vports)
+	end
 end
 
 --------------------
@@ -106,7 +129,7 @@ end
 local overheat = function (meta) -- determine if too hot
 	h = meta:get_int("heat")
 	if h == nil then return true end -- if nil then overheat
-	if h > 30 then 
+	if h > 10 then 
 		return true
 	else 
 		return false 
@@ -135,7 +158,22 @@ local safeprint = function(param)
 	print(dump(param))
 end
 
-local create_environment = function(pos, mem)
+local interrupt = function(params)
+	lc_update(params.pos, {type="interrupt", iid = params.iid})
+end
+
+local getinterrupt = function(pos)
+	local interrupt = function (time, iid) -- iid = interrupt id
+		local meta = minetest.env:get_meta(pos)
+		local interrupts = minetest.deserialize(meta:get_string("lc_interrupts")) or {}
+		table.insert (interrupts, iid or 0)
+		meta:set_string("lc_interrupts", minetest.serialize(interrupts))
+		minetest.after(time, interrupt, {pos=pos, iid = iid})
+	end
+	return interrupt
+end
+
+local create_environment = function(pos, mem, event)
 	-- Gather variables for the environment
 	local vports = minetest.registered_nodes[minetest.env:get_node(pos).name].virtual_portstates
 	vports = {a = vports.a, b = vports.b, c = vports.c, d = vports.d}
@@ -144,7 +182,9 @@ local create_environment = function(pos, mem)
 	return {	print = safeprint,
 			pin = merge_portstates(vports, rports),
 			port = vports,
-			mem = mem}
+			interrupt = getinterrupt(pos),
+			mem = mem,
+			event = event}
 end
 
 local create_sandbox = function (code, env)
@@ -178,23 +218,40 @@ local save_memory = function(meta, mem)
 	meta:set_string("lc_memory", minetest.serialize(mem))
 end
 
+local interrupt_allow = function (meta, event)
+	if event.type ~= "interrupt" then return true end
+
+	local interrupts = minetest.deserialize(meta:get_string("lc_interrupts")) or {}
+	for _, i in ipairs(interrupts) do
+		if i == event.iid then
+			return true
+		end
+	end
+
+	return false
+end
+
 ----------------------
 -- Parsing function --
 ----------------------
 
-local update = function (pos)
+lc_update = function (pos, event)
 	local meta = minetest.env:get_meta(pos)
+	if not interrupt_allow(meta, event) 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)
+	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)
+	local success, msg = pcall(f, port)
 	if not success then return msg end
 
 	do_overheat(pos, meta)
@@ -235,11 +292,15 @@ end
 -- Node Registration --
 -----------------------
 
+local output_rules={}
+local input_rules={}
+
 for a = 0, 1 do
 for b = 0, 1 do
 for c = 0, 1 do
 for d = 0, 1 do
-local nodename = BASENAME..tostring(d)..tostring(c)..tostring(b)..tostring(a)
+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"
@@ -260,31 +321,35 @@ else
 	groups = {dig_immediate=2}
 end
 
-local output_rules={}
-if (a == 1) then table.insert(output_rules, rules.a) end
-if (b == 1) then table.insert(output_rules, rules.b) end
-if (c == 1) then table.insert(output_rules, rules.c) end
-if (d == 1) then table.insert(output_rules, rules.d) end
-
-local input_rules={}
-if (a == 0) then table.insert(input_rules, rules.a) end
-if (b == 0) then table.insert(input_rules, rules.b) end
-if (c == 0) then table.insert(input_rules, rules.c) end
-if (d == 0) then table.insert(input_rules, rules.d) end
-
-local mesecons = {effector =
-{
-	rules = input_rules,
-	action_change = function (pos)
-		update(pos)
-	end
-}}
-if nodename ~= BASENAME.."0000" then
-	mesecons.receptor = {
+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_on = function (pos, _, rulename)
+			lc_update(pos, {type="on",  pin=rulename})
+		end,
+		action_off = function (pos, _, rulename)
+			lc_update(pos, {type="off", pin=rulename})
+		end
+	},
+	receptor =
+	{
 		state = mesecon.state.on,
-		rules = output_rules
+		rules = output_rules[cid]
 	}
-end
+}
 
 local nodebox = {
 		type = "fixed",
@@ -322,11 +387,12 @@ minetest.register_node(nodename, {
 	on_receive_fields = function(pos, formname, fields)
 		reset(pos)
 		reset_meta(pos, fields.code)
-		local err = update(pos)
+		local err = lc_update(pos, {type="program"})
 		if err then print(err) end
 		reset_meta(pos, fields.code, err)
 	end,
 	mesecons = mesecons,
+	is_luacontroller = true,
 	virtual_portstates = {	a = a == 1, -- virtual portstates are
 					b = b == 1, -- the ports the the
 					c = c == 1, -- controller powers itself
-- 
cgit v1.2.3


From 0d441444219816bac6dfd3da0d3997c763bc1669 Mon Sep 17 00:00:00 2001
From: Jeija <norrepli@gmail.com>
Date: Mon, 14 Jan 2013 17:58:14 +0100
Subject: Bugfixes and improved stability of the luacontroller

---
 mesecons_luacontroller/init.lua | 29 ++++++++++++++++-------------
 1 file changed, 16 insertions(+), 13 deletions(-)

diff --git a/mesecons_luacontroller/init.lua b/mesecons_luacontroller/init.lua
index c125ec9..c72dfa7 100644
--- a/mesecons_luacontroller/init.lua
+++ b/mesecons_luacontroller/init.lua
@@ -72,23 +72,16 @@ end
 local action_setports_off = function (pos, ports, vports)
 	local todo = {}
 	if vports.a ~= ports.a and not ports.a then
-		table.insert(todo, mesecon:addPosRule(pos, rules.a))
+		mesecon:receptor_off(pos, {rules.a})
 	end
 	if vports.b ~= ports.b and not ports.b then
-		table.insert(todo, mesecon:addPosRule(pos, rules.b))
+		mesecon:receptor_off(pos, {rules.b})
 	end
 	if vports.c ~= ports.c and not ports.c then
-		table.insert(todo, mesecon:addPosRule(pos, rules.c))
+		mesecon:receptor_off(pos, {rules.c})
 	end
 	if vports.d ~= ports.d and not ports.d then
-		table.insert(todo, mesecon:addPosRule(pos, rules.d))
-	end
-
-	for _, t in ipairs(todo) do
-		local link, rulename = mesecon:rules_link(pos, t)
-		if link then
-			mesecon:turnoff(t, rulename)
-		end
+		mesecon:receptor_off(pos, {rules.d})
 	end
 end
 
@@ -102,6 +95,7 @@ local action = function (pos, ports)
 		..tonumber(ports.a and 1 or 0)
 
 	if name ~= newname and vports then
+		mesecon:swap_node(pos, "air")
 		action_setports_off (pos, ports, vports)
 		mesecon:swap_node(pos, newname)
 		action_setports_on (pos, ports, vports)
@@ -164,6 +158,7 @@ end
 
 local getinterrupt = function(pos)
 	local interrupt = function (time, iid) -- iid = interrupt id
+		if type(time) ~= "number" then return end
 		local meta = minetest.env:get_meta(pos)
 		local interrupts = minetest.deserialize(meta:get_string("lc_interrupts")) or {}
 		table.insert (interrupts, iid or 0)
@@ -223,7 +218,7 @@ local interrupt_allow = function (meta, event)
 
 	local interrupts = minetest.deserialize(meta:get_string("lc_interrupts")) or {}
 	for _, i in ipairs(interrupts) do
-		if i == event.iid then
+		if minetest.serialize(i) == minetest.serialize(event.iid) then
 			return true
 		end
 	end
@@ -231,6 +226,13 @@ local interrupt_allow = function (meta, event)
 	return false
 end
 
+local ports_invalid = function (var)
+	if type(var) == "table" then
+		return false
+	end
+	return "The ports you set are invalid"
+end
+
 ----------------------
 -- Parsing function --
 ----------------------
@@ -251,8 +253,9 @@ lc_update = function (pos, 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, port)
+	local success, msg = pcall(f)
 	if not success then return msg end
+	if ports_invalid(env.port) then return ports_invalid(env.port) end
 
 	do_overheat(pos, meta)
 	save_memory(meta, mem)
-- 
cgit v1.2.3


From ec517becabcc2b80583f3ea2f2b4a3ebec5bc751 Mon Sep 17 00:00:00 2001
From: Jeija <norrepli@gmail.com>
Date: Sat, 19 Jan 2013 12:03:27 +0100
Subject: Texture the LuaController formspec

---
 mesecons_luacontroller/init.lua                      |   7 ++++---
 mesecons_textures/textures/jeija_close_window.png    | Bin 7701 -> 323 bytes
 mesecons_textures/textures/jeija_luac_background.png | Bin 0 -> 2016 bytes
 mesecons_textures/textures/jeija_luac_runbutton.png  | Bin 0 -> 4262 bytes
 4 files changed, 4 insertions(+), 3 deletions(-)
 create mode 100644 mesecons_textures/textures/jeija_luac_background.png
 create mode 100644 mesecons_textures/textures/jeija_luac_runbutton.png

diff --git a/mesecons_luacontroller/init.lua b/mesecons_luacontroller/init.lua
index c72dfa7..f95e072 100644
--- a/mesecons_luacontroller/init.lua
+++ b/mesecons_luacontroller/init.lua
@@ -272,9 +272,10 @@ local reset_meta = function(pos, code, errmsg)
 	errmsg = string.gsub(errmsg, "%]", ")") -- corrupt formspec
 	meta:set_string("code", code)
 	meta:set_string("formspec", "size[10,8]"..
-		"textarea[0.2,0.4;10.2,5;code;Code:;"..code.."]"..
-		"button[3.5,7.5;2,0;program;Program]"..
-		"image_button_exit[9.62,-0.35;0.7,0.7;jeija_close_window.png;exit;]"..
+		"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[0.1,4.5;"..errmsg.."]")
 	meta:set_int("heat", 0)
 end
diff --git a/mesecons_textures/textures/jeija_close_window.png b/mesecons_textures/textures/jeija_close_window.png
index eb89179..5c27c6c 100644
Binary files a/mesecons_textures/textures/jeija_close_window.png and b/mesecons_textures/textures/jeija_close_window.png differ
diff --git a/mesecons_textures/textures/jeija_luac_background.png b/mesecons_textures/textures/jeija_luac_background.png
new file mode 100644
index 0000000..40e316c
Binary files /dev/null and b/mesecons_textures/textures/jeija_luac_background.png differ
diff --git a/mesecons_textures/textures/jeija_luac_runbutton.png b/mesecons_textures/textures/jeija_luac_runbutton.png
new file mode 100644
index 0000000..157507f
Binary files /dev/null and b/mesecons_textures/textures/jeija_luac_runbutton.png differ
-- 
cgit v1.2.3


From fc384aedbbd94e234be1cefda80ebe5580e4eda8 Mon Sep 17 00:00:00 2001
From: Jeija <norrepli@gmail.com>
Date: Sat, 19 Jan 2013 12:04:10 +0100
Subject: Remove unused variable

---
 mesecons_luacontroller/init.lua | 1 -
 1 file changed, 1 deletion(-)

diff --git a/mesecons_luacontroller/init.lua b/mesecons_luacontroller/init.lua
index f95e072..b216c79 100644
--- a/mesecons_luacontroller/init.lua
+++ b/mesecons_luacontroller/init.lua
@@ -70,7 +70,6 @@ local action_setports_on = function (pos, ports, vports)
 end
 
 local action_setports_off = function (pos, ports, vports)
-	local todo = {}
 	if vports.a ~= ports.a and not ports.a then
 		mesecon:receptor_off(pos, {rules.a})
 	end
-- 
cgit v1.2.3


From 62ddebaecbe0ad42488b66d0aee95a834c43af65 Mon Sep 17 00:00:00 2001
From: Jeija <norrepli@gmail.com>
Date: Sat, 19 Jan 2013 21:45:39 +0100
Subject: Add support in luacontroller for a not yet released mod called
 'digilines'

---
 mesecons_luacontroller/init.lua | 49 ++++++++++++++++++++++++++++-------------
 1 file changed, 34 insertions(+), 15 deletions(-)

diff --git a/mesecons_luacontroller/init.lua b/mesecons_luacontroller/init.lua
index b216c79..2a633a6 100644
--- a/mesecons_luacontroller/init.lua
+++ b/mesecons_luacontroller/init.lua
@@ -167,6 +167,15 @@ local getinterrupt = function(pos)
 	return interrupt
 end
 
+local getdigiline_send = function (pos)
+	local digiline_send = function (channel, msg)
+		if digiline then
+			digiline:receptor_send(pos, digiline.rules.default, channel, minetest.serialize(msg))
+		end
+	end
+	return digiline_send
+end
+
 local create_environment = function(pos, mem, event)
 	-- Gather variables for the environment
 	local vports = minetest.registered_nodes[minetest.env:get_node(pos).name].virtual_portstates
@@ -177,6 +186,7 @@ local create_environment = function(pos, mem, event)
 			pin = merge_portstates(vports, rports),
 			port = vports,
 			interrupt = getinterrupt(pos),
+			digiline_send = getdigiline_send(pos),
 			mem = mem,
 			event = event}
 end
@@ -200,7 +210,6 @@ local do_overheat = function (pos, meta)
 		minetest.env:remove_node(pos)
 		minetest.after(0.2, overheat_off, pos) -- wait for pending operations
 		minetest.env:add_item(pos, BASENAME.."0000")
-		return
 	end
 end
 
@@ -298,6 +307,29 @@ end
 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", iid = {channel = channel, msg = minetest.deserialize(msg)}})
+		end
+	}
+}
+
 for a = 0, 1 do
 for b = 0, 1 do
 for c = 0, 1 do
@@ -354,20 +386,6 @@ local mesecons = {
 	}
 }
 
-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 },
-	}
-
 minetest.register_node(nodename, {
 	description = "Luacontroller",
 	drawtype = "nodebox",
@@ -395,6 +413,7 @@ minetest.register_node(nodename, {
 		reset_meta(pos, fields.code, err)
 	end,
 	mesecons = mesecons,
+	digiline = digiline,
 	is_luacontroller = true,
 	virtual_portstates = {	a = a == 1, -- virtual portstates are
 					b = b == 1, -- the ports the the
-- 
cgit v1.2.3


From ef087f2bb63125e041e9ca24d77eb1b987a1b5cc Mon Sep 17 00:00:00 2001
From: Jeija <norrepli@gmail.com>
Date: Sat, 19 Jan 2013 22:18:28 +0100
Subject: Fix Bug: Wrong usage of action_on/action_off instead of action_change

---
 mesecons/init.lua               |  2 +-
 mesecons/internal.lua           | 10 +++++-----
 mesecons_luacontroller/init.lua | 11 ++++-------
 3 files changed, 10 insertions(+), 13 deletions(-)

diff --git a/mesecons/init.lua b/mesecons/init.lua
index 50ed4ca..7f6fe5d 100644
--- a/mesecons/init.lua
+++ b/mesecons/init.lua
@@ -98,7 +98,7 @@ function mesecon:receptor_off(pos, rules)
 			if not mesecon:connected_to_receptor(np) then
 				mesecon:turnoff(np, rulename)
 			else
-				mesecon:changesignal(np, minetest.env:get_node(np), rulename)
+				mesecon:changesignal(np, minetest.env:get_node(np), rulename, mesecon.state.off)
 			end
 		end
 	end
diff --git a/mesecons/internal.lua b/mesecons/internal.lua
index 2d84787..5e243cf 100644
--- a/mesecons/internal.lua
+++ b/mesecons/internal.lua
@@ -24,7 +24,7 @@
 -- SIGNALS
 -- mesecon:activate(pos, node)     --> Activates   the effector node at the specific pos (calls nodedef.mesecons.effector.action_on)
 -- mesecon:deactivate(pos, node)   --> Deactivates the effector node at the specific pos (calls nodedef.mesecons.effector.action_off)
--- mesecon:changesignal(pos, node) --> Changes     the effector node at the specific pos (calls nodedef.mesecons.effector.action_change)
+-- 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
@@ -193,10 +193,10 @@ function mesecon:deactivate(pos, node, rulename)
 	end
 end
 
-function mesecon:changesignal(pos, node, rulename)
+function mesecon:changesignal(pos, node, rulename, newstate)
 	local effector = mesecon:get_effector(node.name)
 	if effector and effector.action_change then
-		effector.action_change (pos, node, rulename)
+		effector.action_change (pos, node, rulename, newstate)
 	end
 end
 
@@ -299,7 +299,7 @@ function mesecon:turnon(pos, rulename)
 			end
 		end
 	elseif mesecon:is_effector(node.name) then
-		mesecon:changesignal(pos, node, rulename)
+		mesecon:changesignal(pos, node, rulename, mesecon.state.on)
 		if mesecon:is_effector_off(node.name) then
 			mesecon:activate(pos, node, rulename)
 		end
@@ -322,7 +322,7 @@ function mesecon:turnoff(pos, rulename)
 			end
 		end
 	elseif mesecon:is_effector(node.name) then
-		mesecon:changesignal(pos, node, rulename)
+		mesecon:changesignal(pos, node, rulename, mesecon.state.off)
 		if mesecon:is_effector_on(node.name)
 		and not mesecon:is_powered(pos) then
 			mesecon:deactivate(pos, node, rulename)
diff --git a/mesecons_luacontroller/init.lua b/mesecons_luacontroller/init.lua
index 2a633a6..44c38ff 100644
--- a/mesecons_luacontroller/init.lua
+++ b/mesecons_luacontroller/init.lua
@@ -170,7 +170,7 @@ end
 local getdigiline_send = function (pos)
 	local digiline_send = function (channel, msg)
 		if digiline then
-			digiline:receptor_send(pos, digiline.rules.default, channel, minetest.serialize(msg))
+			digiline:receptor_send(pos, digiline.rules.default, channel, msg)
 		end
 	end
 	return digiline_send
@@ -325,7 +325,7 @@ local digiline = {
 	receptor = {},
 	effector = {
 		action = function (pos, node, channel, msg)
-			lc_update (pos, {type = "digiline", iid = {channel = channel, msg = minetest.deserialize(msg)}})
+			lc_update (pos, {type = "digiline", iid = {channel = channel, msg = msg}})
 		end
 	}
 }
@@ -372,12 +372,9 @@ local mesecons = {
 	effector =
 	{
 		rules = input_rules[cid],
-		action_on = function (pos, _, rulename)
-			lc_update(pos, {type="on",  pin=rulename})
+		action_change = function (pos, _, rulename, newstate)
+			lc_update(pos, {type=newstate,  pin=rulename})
 		end,
-		action_off = function (pos, _, rulename)
-			lc_update(pos, {type="off", pin=rulename})
-		end
 	},
 	receptor =
 	{
-- 
cgit v1.2.3


From 18da94006af36bf200fc88f0dbd9aaa2270982db Mon Sep 17 00:00:00 2001
From: Jeija <jeija@mesecons.net>
Date: Sun, 20 Jan 2013 17:48:43 +0100
Subject: Lots of bugfixes concerning the luacontroller - Bug when using
 NOT-Gates - Moved error label a little downwards - On digiline event, msg and
 channel are now in event.*, not in event.iid.*

---
 mesecons_luacontroller/init.lua | 88 ++++++++++++++++++++---------------------
 1 file changed, 43 insertions(+), 45 deletions(-)

diff --git a/mesecons_luacontroller/init.lua b/mesecons_luacontroller/init.lua
index 44c38ff..1967888 100644
--- a/mesecons_luacontroller/init.lua
+++ b/mesecons_luacontroller/init.lua
@@ -54,50 +54,46 @@ local merge_portstates = function (ports, vports)
 	return npo
 end
 
-local action_setports_on = function (pos, ports, vports)
-	if vports.a ~= ports.a and ports.a then
-		mesecon:receptor_on(pos, {rules.a})
-	end
-	if vports.b ~= ports.b and ports.b then
-		mesecon:receptor_on(pos, {rules.b})
-	end
-	if vports.c ~= ports.c and ports.c then
-		mesecon:receptor_on(pos, {rules.c})
-	end
-	if vports.d ~= ports.d and ports.d then
-		mesecon:receptor_on(pos, {rules.d})
-	end
-end
-
-local action_setports_off = function (pos, ports, vports)
-	if vports.a ~= ports.a and not ports.a then
-		mesecon:receptor_off(pos, {rules.a})
-	end
-	if vports.b ~= ports.b and not ports.b then
-		mesecon:receptor_off(pos, {rules.b})
-	end
-	if vports.c ~= ports.c and not ports.c then
-		mesecon:receptor_off(pos, {rules.c})
-	end
-	if vports.d ~= ports.d and not ports.d then
-		mesecon:receptor_off(pos, {rules.d})
-	end
+local generate_name = function (ports, overwrite)
+	local overwrite = overwrite or {}
+	local d = overwrite.d or (ports.d and 1 or 0)
+	local c = overwrite.d or (ports.c and 1 or 0)
+	local b = overwrite.d or (ports.b and 1 or 0)
+	local a = overwrite.d or (ports.a and 1 or 0)
+	return BASENAME..d..c..b..a
 end
 
 local action = function (pos, ports)
 	local name = minetest.env:get_node(pos).name
 	local vports = minetest.registered_nodes[name].virtual_portstates
-	local newname = BASENAME
-		..tonumber(ports.d and 1 or 0)
-		..tonumber(ports.c and 1 or 0)
-		..tonumber(ports.b and 1 or 0)
-		..tonumber(ports.a and 1 or 0)
+	local newname = generate_name(ports)
 
 	if name ~= newname and vports then
-		mesecon:swap_node(pos, "air")
-		action_setports_off (pos, ports, vports)
-		mesecon:swap_node(pos, newname)
-		action_setports_on (pos, ports, vports)
+		local rules_on  = {}
+		local rules_off = {}
+		local ignore = {}
+
+		if ports.a then	table.insert(rules_on,  rules.a)
+		else			table.insert(rules_off, rules.a) end
+		if ports.b then	table.insert(rules_on,  rules.b)
+		else			table.insert(rules_off, rules.b) end
+		if ports.c then	table.insert(rules_on,  rules.c)
+		else			table.insert(rules_off, rules.c) end
+		if ports.d then	table.insert(rules_on,  rules.d)
+		else			table.insert(rules_off, rules.d) end
+
+		if ports.a ~= vports.a then ignore.a = 2 end
+		if ports.b ~= vports.b then ignore.b = 2 end
+		if ports.c ~= vports.c then ignore.c = 2 end
+		if ports.d ~= vports.d then ignore.d = 2 end
+
+		mesecon:swap_node(pos, generate_name(ports, ignore))
+		mesecon:receptor_off(pos, rules_off)
+		if minetest.env:get_node(pos).name ~= generate_name(ports, ignore) then return end -- not interrupted by another event
+		mesecon:receptor_on (pos, rules_on )
+		if minetest.registered_nodes[minetest.env:get_node(pos).name].is_luacontroller then --didnt overheat
+			mesecon:swap_node(pos, newname)
+		end
 	end
 end
 
@@ -122,7 +118,7 @@ end
 local overheat = function (meta) -- determine if too hot
 	h = meta:get_int("heat")
 	if h == nil then return true end -- if nil then overheat
-	if h > 10 then 
+	if h > 20 then 
 		return true
 	else 
 		return false 
@@ -210,6 +206,7 @@ local do_overheat = function (pos, meta)
 		minetest.env:remove_node(pos)
 		minetest.after(0.2, overheat_off, pos) -- wait for pending operations
 		minetest.env:add_item(pos, BASENAME.."0000")
+		return true
 	end
 end
 
@@ -248,6 +245,7 @@ end
 lc_update = function (pos, event)
 	local meta = minetest.env:get_meta(pos)
 	if not interrupt_allow(meta, event) then return end
+	if do_overheat(pos, meta) then return end
 
 	-- load code & mem from memory
 	local mem  = load_memory(meta)
@@ -265,7 +263,6 @@ lc_update = function (pos, event)
 	if not success then return msg end
 	if ports_invalid(env.port) then return ports_invalid(env.port) end
 
-	do_overheat(pos, meta)
 	save_memory(meta, mem)
 
 	-- Actually set the ports
@@ -284,7 +281,7 @@ local reset_meta = function(pos, code, errmsg)
 		"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[0.1,4.5;"..errmsg.."]")
+		"label[0.1,5;"..errmsg.."]")
 	meta:set_int("heat", 0)
 end
 
@@ -325,15 +322,16 @@ local digiline = {
 	receptor = {},
 	effector = {
 		action = function (pos, node, channel, msg)
-			lc_update (pos, {type = "digiline", iid = {channel = channel, msg = msg}})
+			lc_update (pos, {type = "digiline", channel = channel, msg = msg})
 		end
 	}
 }
 
-for a = 0, 1 do
-for b = 0, 1 do
-for c = 0, 1 do
-for d = 0, 1 do
+for a = 0, 2 do -- 0 = off; 1 = on; 2 = ignore
+for b = 0, 2 do
+for c = 0, 2 do
+for d = 0, 2 do
+
 local cid = tostring(d)..tostring(c)..tostring(b)..tostring(a)
 local nodename = BASENAME..cid
 local top = "jeija_luacontroller_top.png"
-- 
cgit v1.2.3


From 2b30360da23cedecdd45f2a8060d87a9e3038ac8 Mon Sep 17 00:00:00 2001
From: Jeija <jeija@mesecons.net>
Date: Tue, 22 Jan 2013 18:26:27 +0100
Subject: Bugfix for the luacontroller that occured when two events occur at
 the same time (output connected to input). The behaviour of the controller
 can now be described this way: The luacontroller sets port A, then B, then C,
 then D; if it is interrupted by another event during that time it stops and
 let the second event do the job.

---
 mesecons_luacontroller/init.lua | 50 ++++++++++++++++++++++-------------------
 1 file changed, 27 insertions(+), 23 deletions(-)

diff --git a/mesecons_luacontroller/init.lua b/mesecons_luacontroller/init.lua
index 1967888..76e08bd 100644
--- a/mesecons_luacontroller/init.lua
+++ b/mesecons_luacontroller/init.lua
@@ -63,7 +63,21 @@ local generate_name = function (ports, overwrite)
 	return BASENAME..d..c..b..a
 end
 
-local action = function (pos, ports)
+local setport = function (pos, rule, ignore, state, ports)
+	local ignorename = generate_name(ports, ignore)
+	mesecon:swap_node(pos, ignorename)
+	if state then
+		mesecon:receptor_on(pos, {rule})
+	else
+		mesecon:receptor_off(pos, {rule})
+	end
+	if minetest.env:get_node(pos).name ~= ignorename then
+		return true -- overridden by second process
+	end
+	return false -- success
+end
+
+local action = function (pos, ports, forcereset)
 	local name = minetest.env:get_node(pos).name
 	local vports = minetest.registered_nodes[name].virtual_portstates
 	local newname = generate_name(ports)
@@ -73,27 +87,17 @@ local action = function (pos, ports)
 		local rules_off = {}
 		local ignore = {}
 
-		if ports.a then	table.insert(rules_on,  rules.a)
-		else			table.insert(rules_off, rules.a) end
-		if ports.b then	table.insert(rules_on,  rules.b)
-		else			table.insert(rules_off, rules.b) end
-		if ports.c then	table.insert(rules_on,  rules.c)
-		else			table.insert(rules_off, rules.c) end
-		if ports.d then	table.insert(rules_on,  rules.d)
-		else			table.insert(rules_off, rules.d) end
-
-		if ports.a ~= vports.a then ignore.a = 2 end
-		if ports.b ~= vports.b then ignore.b = 2 end
-		if ports.c ~= vports.c then ignore.c = 2 end
-		if ports.d ~= vports.d then ignore.d = 2 end
-
-		mesecon:swap_node(pos, generate_name(ports, ignore))
-		mesecon:receptor_off(pos, rules_off)
-		if minetest.env:get_node(pos).name ~= generate_name(ports, ignore) then return end -- not interrupted by another event
-		mesecon:receptor_on (pos, rules_on )
-		if minetest.registered_nodes[minetest.env:get_node(pos).name].is_luacontroller then --didnt overheat
-			mesecon:swap_node(pos, newname)
-		end
+		local interrupted
+		if ports.a ~= vports.a then interrupted = setport(pos, rules.a, {a = 2}, ports.a, ports) end
+		if interrupted and not forcereset then return end
+		if ports.b ~= vports.b then interrupted = setport(pos, rules.b, {b = 2}, ports.b, ports) end
+		if interrupted and not forcereset then return end
+		if ports.c ~= vports.c then interrupted = setport(pos, rules.c, {c = 2}, ports.c, ports) end
+		if interrupted and not forcereset then return end
+		if ports.d ~= vports.d then interrupted = setport(pos, rules.d, {d = 2}, ports.d, ports) end
+		if interrupted and not forcereset then return end
+
+		mesecon:swap_node(pos, newname)
 	end
 end
 
@@ -286,7 +290,7 @@ local reset_meta = function(pos, code, errmsg)
 end
 
 local reset = function (pos)
-	action(pos, {a=false, b=false, c=false, d=false})
+	action(pos, {a=false, b=false, c=false, d=false}, true)
 end
 
 --        ______
-- 
cgit v1.2.3


From 59cd72191b89e15dfd901dde487c6eb13252c3ba Mon Sep 17 00:00:00 2001
From: Jeija <jeija@mesecons.net>
Date: Tue, 22 Jan 2013 21:15:49 +0100
Subject: Add tostring, tonumber, string to luacontroller, prohibit 'function'

---
 mesecons_luacontroller/init.lua | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/mesecons_luacontroller/init.lua b/mesecons_luacontroller/init.lua
index 76e08bd..344e0d3 100644
--- a/mesecons_luacontroller/init.lua
+++ b/mesecons_luacontroller/init.lua
@@ -139,7 +139,7 @@ end
 
 local code_prohibited = function(code)
 	-- Clean code
-	local prohibited = {"while", "for", "repeat", "until"}
+	local prohibited = {"while", "for", "repeat", "until", "function"}
 	for _, p in ipairs(prohibited) do
 		if string.find(code, p) then
 			return "Prohibited command: "..p
@@ -188,6 +188,9 @@ local create_environment = function(pos, mem, event)
 			interrupt = getinterrupt(pos),
 			digiline_send = getdigiline_send(pos),
 			mem = mem,
+			tostring = tostring,
+			tonumber = tonumber,
+			string = string,
 			event = event}
 end
 
-- 
cgit v1.2.3


From 591e2d7cde9eda88ca85b71066dd9ed7f75f9a12 Mon Sep 17 00:00:00 2001
From: Jeija <norrepli@gmail.com>
Date: Sun, 10 Feb 2013 23:08:59 +0100
Subject: LuaController: Queue setting the ports (wait for pending operations)

---
 mesecons_luacontroller/init.lua | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/mesecons_luacontroller/init.lua b/mesecons_luacontroller/init.lua
index 344e0d3..91551a1 100644
--- a/mesecons_luacontroller/init.lua
+++ b/mesecons_luacontroller/init.lua
@@ -101,6 +101,10 @@ local action = function (pos, ports, forcereset)
 	end
 end
 
+local delayedaction = function (params)
+	action(params.pos, params.ports)
+end
+
 --------------------
 -- Overheat stuff --
 --------------------
@@ -273,7 +277,7 @@ lc_update = function (pos, event)
 	save_memory(meta, mem)
 
 	-- Actually set the ports
-	action(pos, env.port)
+	minetest.after(0, delayedaction, {pos = pos, ports = env.port})
 end
 
 local reset_meta = function(pos, code, errmsg)
-- 
cgit v1.2.3


From eeed4f148d95dd418ecee54fc6dfb22ab47f5f1b Mon Sep 17 00:00:00 2001
From: Jeija <norrepli@gmail.com>
Date: Tue, 12 Feb 2013 10:25:24 +0100
Subject: Fix odd behaviour when using interrupts in the luacontroller

---
 mesecons_luacontroller/init.lua | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/mesecons_luacontroller/init.lua b/mesecons_luacontroller/init.lua
index 91551a1..5141f8a 100644
--- a/mesecons_luacontroller/init.lua
+++ b/mesecons_luacontroller/init.lua
@@ -162,9 +162,10 @@ end
 local getinterrupt = function(pos)
 	local interrupt = function (time, iid) -- iid = interrupt id
 		if type(time) ~= "number" then return end
+		local iid = iid or math.random()
 		local meta = minetest.env:get_meta(pos)
 		local interrupts = minetest.deserialize(meta:get_string("lc_interrupts")) or {}
-		table.insert (interrupts, iid or 0)
+		table.insert (interrupts, iid)
 		meta:set_string("lc_interrupts", minetest.serialize(interrupts))
 		minetest.after(time, interrupt, {pos=pos, iid = iid})
 	end
@@ -297,6 +298,7 @@ local reset_meta = function(pos, code, errmsg)
 end
 
 local reset = function (pos)
+	minetest.env:get_meta(pos):set_string("lc_interrupts", "")
 	action(pos, {a=false, b=false, c=false, d=false}, true)
 end
 
-- 
cgit v1.2.3


From 1c4ab938ad6d1a45dc30d0f276c75b248f9796cf Mon Sep 17 00:00:00 2001
From: Jeija <norrepli@gmail.com>
Date: Tue, 12 Feb 2013 10:58:29 +0100
Subject: Fix a dumb bug that conflicted with different things in the
 luacontroller

---
 mesecons_luacontroller/init.lua | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/mesecons_luacontroller/init.lua b/mesecons_luacontroller/init.lua
index 5141f8a..d0c98ad 100644
--- a/mesecons_luacontroller/init.lua
+++ b/mesecons_luacontroller/init.lua
@@ -57,9 +57,9 @@ end
 local generate_name = function (ports, overwrite)
 	local overwrite = overwrite or {}
 	local d = overwrite.d or (ports.d and 1 or 0)
-	local c = overwrite.d or (ports.c and 1 or 0)
-	local b = overwrite.d or (ports.b and 1 or 0)
-	local a = overwrite.d or (ports.a and 1 or 0)
+	local c = overwrite.c or (ports.c and 1 or 0)
+	local b = overwrite.b or (ports.b and 1 or 0)
+	local a = overwrite.a or (ports.a and 1 or 0)
 	return BASENAME..d..c..b..a
 end
 
-- 
cgit v1.2.3