Merge branch 'mesecons_update'

mods/ITEMS/REDSTONE/mesecons/actionqueue.lua

@@ -0,0 +1,105 @@
+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 or {}),
+				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(vector.equals(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
+	local 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
+local resumetime = mesecon.setting("resumetime", 4)
+minetest.register_globalstep(function (dtime)
+	m_time = m_time + dtime
+	-- don't even try if server has not been running for XY seconds; resumetime = time to wait
+	-- after starting the server before processing the ActionQueue, don't set this too low
+	if (m_time < resumetime) then return end
+	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)
+	-- ignore if action queue function name doesn't exist,
+	-- (e.g. in case the action queue savegame was written by an old mesecons version)
+	if mesecon.queue.funcs[action.func] then
+		mesecon.queue.funcs[action.func](action.pos, unpack(action.params))
+	end
+end
+
+
+-- Store and read the ActionQueue to / from a file
+-- so that upcoming actions are remembered when the game
+-- is restarted
+mesecon.queue.actions = mesecon.file2table("mesecon_actionqueue")
+
+minetest.register_on_shutdown(function()
+	mesecon.table2file("mesecon_actionqueue", mesecon.queue.actions)
+end)

mods/ITEMS/REDSTONE/mesecons/init.lua

@@ -3,7 +3,7 @@
 -- |  \/  | |___ ____  |___ |      |    | | \  | |____
 -- |      | |        | |    |      |    | |  \ |     |
 -- |      | |___ ____| |___ |____  |____| |   \| ____|
--- by Jeija, Uberi (Temperest), sfan5, VanessaE
+-- by Jeija, Uberi (Temperest), sfan5, VanessaE, Hawk777 and contributors
 --
 --
 --
@@ -11,7 +11,7 @@
 -- See the documentation on the forum for additional information, especially about crafting
 --
 --
--- For developer documentation see the Developers' section on mesecons.TK
+-- For basic development resources, see http://mesecons.net/developers.html
 --
 --
 --
@@ -30,7 +30,7 @@
 --		action_change = function
 --		rules = rules/get_rules
 --	},
---	conductor = 
+--	conductor =
 --	{
 --		state = mesecon.state.on/off
 --		offstate = opposite state (for state = on only)
@@ -39,28 +39,26 @@
 --	}
 --}
 
-local init = os.clock()
 -- PUBLIC VARIABLES
 mesecon={} -- contains all functions and all global variables
-mesecon.actions_on={} -- Saves registered function callbacks for mesecon on | DEPRECATED
-mesecon.actions_off={} -- Saves registered function callbacks for mesecon off | DEPRECATED
-mesecon.actions_change={} -- Saves registered function callbacks for mesecon change | DEPRECATED
-mesecon.receptors={} --  saves all information about receptors  | DEPRECATED
-mesecon.effectors={} --  saves all information about effectors  | DEPRECATED
-mesecon.conductors={} -- saves all information about conductors | DEPRECATED
+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");
 
+-- Presets (eg default rules)
+dofile(minetest.get_modpath("mesecons").."/presets.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
@@ -68,47 +66,63 @@ dofile(minetest.get_modpath("mesecons").."/util.lua");
 -- 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
 
-function mesecon:receptor_on(pos, rules)
+mesecon.queue:add_function("receptor_on", function (pos, rules)
+	mesecon.vm_begin()
+
 	rules = rules or mesecon.rules.default
 
-	for _, rule in ipairs(rules) do
-		local np = mesecon:addPosRule(pos, rule)
-		local link, rulename = mesecon:rules_link(pos, np, rules)
-		if link then
-			mesecon:turnon(np, rulename)
+	-- Call turnon on all linking positions
+	for _, rule in ipairs(mesecon.flattenrules(rules)) do
+		local np = vector.add(pos, rule)
+		local rulenames = mesecon.rules_link_rule_all(pos, rule)
+		for _, rulename in ipairs(rulenames) do
+			mesecon.turnon(np, rulename)
 		end
 	end
+
+	mesecon.vm_commit()
+end)
+
+function mesecon.receptor_on(pos, rules)
+	mesecon.queue:add_action(pos, "receptor_on", {rules}, nil, rules)
 end
 
-function mesecon:receptor_off(pos, rules)
+mesecon.queue:add_function("receptor_off", function (pos, rules)
 	rules = rules or mesecon.rules.default
 
-	for _, rule in ipairs(rules) do
-		local np = mesecon:addPosRule(pos, rule)
-		local link, rulename = mesecon:rules_link(pos, np, rules)
-		if link then
-			if not mesecon:connected_to_receptor(np) then
-				mesecon:turnoff(np, rulename)
+	-- Call turnoff on all linking positions
+	for _, rule in ipairs(mesecon.flattenrules(rules)) do
+		local np = vector.add(pos, rule)
+		local rulenames = mesecon.rules_link_rule_all(pos, rule)
+		for _, rulename in ipairs(rulenames) do
+			mesecon.vm_begin()
+			mesecon.changesignal(np, minetest.get_node(np), rulename, mesecon.state.off, 2)
+
+			-- Turnoff returns true if turnoff process was successful, no onstate receptor
+			-- was found along the way. Commit changes that were made in voxelmanip. If turnoff
+			-- returns true, an onstate receptor was found, abort voxelmanip transaction.
+			if (mesecon.turnoff(np, rulename)) then
+				mesecon.vm_commit()
 			else
-				mesecon:changesignal(np, minetest.get_node(np), rulename, mesecon.state.off)
+				mesecon.vm_abort()
 			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");
+
+print("[OK] Mesecons")
+
+-- Deprecated stuff
+-- To be removed in future releases
+dofile(minetest.get_modpath("mesecons").."/legacy.lua");
 
 --Services like turnoff receptor on dignode and so on
 dofile(minetest.get_modpath("mesecons").."/services.lua");
-
-local time_to_load= os.clock() - init
-print(string.format("[MOD] "..minetest.get_current_modname().." loaded in %.4f s", time_to_load))

mods/ITEMS/REDSTONE/mesecons/internal.lua

@@ -1,63 +1,53 @@
 -- Internal.lua - The core of mesecons
 --
--- For more practical developer resources see mesecons.tk
+-- For more practical developer resources see http://mesecons.net/developers.php
 --
 -- 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
+-- 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)
+-- 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)
+-- 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)     --> 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, 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
+-- mesecon.activate(pos, node, depth)				--> Activates   the effector node at the specific pos (calls nodedef.mesecons.effector.action_on), higher depths are executed later
+-- mesecon.deactivate(pos, node, depth)				--> Deactivates the effector node at the specific pos (calls nodedef.mesecons.effector.action_off), higher depths are executed later
+-- mesecon.changesignal(pos, node, rulename, newstate, depth)	--> Changes     the effector node at the specific pos (calls nodedef.mesecons.effector.action_change), higher depths are executed later
 
 -- CONDUCTORS
--- mesecon:is_conductor(nodename)     --> Returns true if nodename is a conductor
--- mesecon:is_conductor_on(nodename)  --> Returns true if nodename is a conductor with state = mesecon.state.on
--- mesecon:is_conductor_off(nodename) --> Returns true if nodename is a conductor with state = mesecon.state.off
--- mesecon:get_conductor_on(offstate) --> Returns the onstate  nodename of the conductor with the name offstate
--- mesecon:get_conductor_off(onstate) --> Returns the offstate nodename of the conductor with the name onstate
--- mesecon:conductor_get_rules(node)  --> Returns the input+output rules of a conductor (mesecon.rules.default if none specified)
+-- 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
--- 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
--- 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_from(pos,rule)    --> Returns true if pos is powered by a receptor or a conductor at pos+rule
--- mesecon:is_powered(pos)              --> Returns true if pos is powered by a receptor or a conductor
+-- 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.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)
+-- RULES ROTATION helpers
+-- 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)
+function mesecon.get_effector(nodename)
 	if  minetest.registered_nodes[nodename]
 	and minetest.registered_nodes[nodename].mesecons
 	and minetest.registered_nodes[nodename].mesecons.effector then
@@ -65,7 +55,7 @@ function mesecon:get_effector(nodename)
 	end
 end
 
-function mesecon:get_receptor(nodename)
+function mesecon.get_receptor(nodename)
 	if  minetest.registered_nodes[nodename]
 	and minetest.registered_nodes[nodename].mesecons
 	and minetest.registered_nodes[nodename].mesecons.receptor then
@@ -73,7 +63,7 @@ function mesecon:get_receptor(nodename)
 	end
 end
 
-function mesecon:get_conductor(nodename)
+function mesecon.get_conductor(nodename)
 	if  minetest.registered_nodes[nodename]
 	and minetest.registered_nodes[nodename].mesecons
 	and minetest.registered_nodes[nodename].mesecons.conductor then
@@ -81,52 +71,59 @@ function mesecon:get_conductor(nodename)
 	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)
+function mesecon.get_any_outputrules(node)
+	if not node then return nil end
+
+	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)
+function mesecon.get_any_inputrules(node)
+	if not node then return nil end
+
+	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
+
+function mesecon.get_any_rules(node)
+	return mesecon.mergetable(mesecon.get_any_inputrules(node) or {},
+		mesecon.get_any_outputrules(node) or {})
 end
 
 -- Receptors
 -- Nodes that can power mesecons
-function mesecon:is_receptor_on(nodename)
-	local receptor = mesecon:get_receptor(nodename)
+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)
+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)
+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)
+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
@@ -141,32 +138,32 @@ end
 
 -- Effectors
 -- Nodes that can be powered by mesecons
-function mesecon:is_effector_on(nodename)
-	local effector = mesecon:get_effector(nodename)
+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)
+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)
+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)
+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
@@ -178,83 +175,168 @@ function mesecon:effector_get_rules(node)
 	return mesecon.rules.default
 end
 
---Signals
+-- #######################
+-- # Signals (effectors) #
+-- #######################
+
+-- Activation:
+mesecon.queue:add_function("activate", function (pos, rulename)
+	local node = mesecon.get_node_force(pos)
+	if not node then return end
+
+	local effector = mesecon.get_effector(node.name)
 
-function mesecon:activate(pos, node, rulename)
-	local effector = mesecon:get_effector(node.name)
 	if effector and effector.action_on then
-		effector.action_on (pos, node, rulename)
+		effector.action_on(pos, node, rulename)
 	end
+end)
+
+function mesecon.activate(pos, node, rulename, depth)
+	if rulename == nil then
+		for _,rule in ipairs(mesecon.effector_get_rules(node)) do
+			mesecon.activate(pos, node, rule, depth + 1)
+		end
+		return
+	end
+	mesecon.queue:add_action(pos, "activate", {rulename}, nil, rulename, 1 / depth)
 end
 
-function mesecon:deactivate(pos, node, rulename)
-	local effector = mesecon:get_effector(node.name)
+
+-- Deactivation
+mesecon.queue:add_function("deactivate", function (pos, rulename)
+	local node = mesecon.get_node_force(pos)
+	if not node then return end
+
+	local effector = mesecon.get_effector(node.name)
+
 	if effector and effector.action_off then
-		effector.action_off (pos, node, rulename)
+		effector.action_off(pos, node, rulename)
 	end
+end)
+
+function mesecon.deactivate(pos, node, rulename, depth)
+	if rulename == nil then
+		for _,rule in ipairs(mesecon.effector_get_rules(node)) do
+			mesecon.deactivate(pos, node, rule, depth + 1)
+		end
+		return
+	end
+	mesecon.queue:add_action(pos, "deactivate", {rulename}, nil, rulename, 1 / depth)
 end
 
-function mesecon:changesignal(pos, node, rulename, newstate)
-	local effector = mesecon:get_effector(node.name)
+
+-- Change
+mesecon.queue:add_function("change", function (pos, rulename, changetype)
+	local node = mesecon.get_node_force(pos)
+	if not node then return end
+
+	local effector = mesecon.get_effector(node.name)
+
 	if effector and effector.action_change then
-		effector.action_change (pos, node, rulename, newstate)
+		effector.action_change(pos, node, rulename, changetype)
 	end
-end
+end)
 
---Rules
+function mesecon.changesignal(pos, node, rulename, newstate, depth)
+	if rulename == nil then
+		for _,rule in ipairs(mesecon.effector_get_rules(node)) do
+			mesecon.changesignal(pos, node, rule, newstate, depth + 1)
+		end
+		return
+	end
 
-function mesecon:add_rules(name, rules)
-	mesecon.rules[name] = rules
-end
-
-function mesecon:get_rules(name)
-	return mesecon.rules[name]
+	-- Include "change" in overwritecheck so that it cannot be overwritten
+	-- by "active" / "deactivate" that will be called upon the node at the same time.
+	local overwritecheck = {"change", rulename}
+	mesecon.queue:add_action(pos, "change", {rulename, newstate}, nil, overwritecheck, 1 / depth)
 end
 
 -- Conductors
 
-function mesecon:is_conductor_on(nodename)
-	local conductor = mesecon:get_conductor(nodename)
-	if conductor and conductor.state == mesecon.state.on then
-		return true
+function mesecon.is_conductor_on(node, rulename)
+	if not node then return false end
+
+	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(nodename)
-	local conductor = mesecon:get_conductor(nodename)
-	if conductor and conductor.state == mesecon.state.off then
-		return true
+function mesecon.is_conductor_off(node, rulename)
+	if not node then return false end
+
+	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)
+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(offstate)
-	local conductor = mesecon:get_conductor(offstate)
+function mesecon.get_conductor_on(node_off, rulename)
+	local conductor = mesecon.get_conductor(node_off.name)
 	if conductor then
-		return conductor.onstate
+		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 false
+	return offstate
 end
 
-function mesecon:get_conductor_off(onstate)
-	local conductor = mesecon:get_conductor(onstate)
+function mesecon.get_conductor_off(node_on, rulename)
+	local conductor = mesecon.get_conductor(node_on.name)
 	if conductor then
-		return conductor.offstate
+		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 false
+	return onstate
 end
 
-function mesecon:conductor_get_rules(node)
-	local conductor = mesecon:get_conductor(node.name)
+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
@@ -268,211 +350,250 @@ end
 
 -- some more general high-level stuff
 
-function mesecon:is_power_on(pos)
-	local node = minetest.get_node(pos)
-	if mesecon:is_conductor_on(node.name) or mesecon:is_receptor_on(node.name) then
+function mesecon.is_power_on(pos, rulename)
+	local node = mesecon.get_node_force(pos)
+	if node and (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)
-	local node = minetest.get_node(pos)
-	if mesecon:is_conductor_off(node.name) or mesecon:is_receptor_off(node.name) then
+function mesecon.is_power_off(pos, rulename)
+	local node = mesecon.get_node_force(pos)
+	if node and (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)
-	local node = minetest.get_node(pos)
+-- Turn off an equipotential section starting at `pos`, which outputs in the direction of `link`.
+-- Breadth-first search. Map is abstracted away in a voxelmanip.
+-- Follow all all conductor paths replacing conductors that were already
+-- looked at, activating / changing all effectors along the way.
+function mesecon.turnon(pos, link)
+	local frontiers = {{pos = pos, link = link}}
 
-	if mesecon:is_conductor_off(node.name) then
-		local rules = mesecon:conductor_get_rules(node)
-		minetest.add_node(pos, {name = mesecon:get_conductor_on(node.name), param2 = node.param2})
+	local depth = 1
+	while frontiers[1] do
+		local f = table.remove(frontiers, 1)
+		local node = mesecon.get_node_force(f.pos)
 
-		for _, rule in ipairs(rules) do
-			local np = mesecon:addPosRule(pos, rule)
-			local link, rulename = mesecon:rules_link(pos, np)
+		if not node then
+			-- Area does not exist; do nothing
+		elseif mesecon.is_conductor_off(node, f.link) then
+			local rules = mesecon.conductor_get_rules(node)
 
-			if link then
-				mesecon:turnon(np, rulename)
+			-- Call turnon on neighbors
+			for _, r in ipairs(mesecon.rule2meta(f.link, rules)) do
+				local np = vector.add(f.pos, r)
+				for _, l in ipairs(mesecon.rules_link_rule_all(f.pos, r)) do
+					table.insert(frontiers, {pos = np, link = l})
+				end
+			end
+
+			mesecon.swap_node_force(f.pos, mesecon.get_conductor_on(node, f.link))
+		elseif mesecon.is_effector(node.name) then
+			mesecon.changesignal(f.pos, node, f.link, mesecon.state.on, depth)
+			if mesecon.is_effector_off(node.name) then
+				mesecon.activate(f.pos, node, f.link, depth)
 			end
 		end
-	elseif mesecon:is_effector(node.name) then
-		mesecon:changesignal(pos, node, rulename, mesecon.state.on)
-		if mesecon:is_effector_off(node.name) then
-			mesecon:activate(pos, node, rulename)
-		end
+		depth = depth + 1
 	end
 end
 
-function mesecon:turnoff(pos, rulename)
-	local node = minetest.get_node(pos)
+-- Turn on an equipotential section starting at `pos`, which outputs in the direction of `link`.
+-- Breadth-first search. Map is abstracted away in a voxelmanip.
+-- Follow all all conductor paths replacing conductors that were already
+-- looked at, deactivating / changing all effectors along the way.
+-- In case an onstate receptor is discovered, abort the process by returning false, which will
+-- cause `receptor_off` to discard all changes made in the voxelmanip.
+-- Contrary to turnon, turnoff has to cache all change and deactivate signals so that they will only
+-- be called in the very end when we can be sure that no conductor was found along the path.
+--
+-- Signal table entry structure:
+-- {
+--	pos = position of effector,
+--	node = node descriptor (name, param1 and param2),
+--	link = link the effector is connected to,
+--	depth = indicates order in which signals wire fired, higher is later
+-- }
+function mesecon.turnoff(pos, link)
+	local frontiers = {{pos = pos, link = link}}
+	local signals = {}
 
-	if mesecon:is_conductor_on(node.name) then
-		local rules = mesecon:conductor_get_rules(node)
-		minetest.add_node(pos, {name = mesecon:get_conductor_off(node.name), param2 = node.param2})
+	local depth = 1
+	while frontiers[1] do
+		local f = table.remove(frontiers, 1)
+		local node = mesecon.get_node_force(f.pos)
 
-		for _, rule in ipairs(rules) do
-			local np = mesecon:addPosRule(pos, rule)
-			local link, rulename = mesecon:rules_link(pos, np)
+		if not node then
+			-- Area does not exist; do nothing
+		elseif mesecon.is_conductor_on(node, f.link) then
+			local rules = mesecon.conductor_get_rules(node)
+			for _, r in ipairs(mesecon.rule2meta(f.link, rules)) do
+				local np = vector.add(f.pos, r)
 
-			if link then
-				mesecon:turnoff(np, rulename)
+				-- Check if an onstate receptor is connected. If that is the case,
+				-- abort this turnoff process by returning false. `receptor_off` will
+				-- discard all the changes that we made in the voxelmanip:
+				for _, l in ipairs(mesecon.rules_link_rule_all_inverted(f.pos, r)) do
+					if mesecon.is_receptor_on(mesecon.get_node_force(np).name) then
+						return false
+					end
+				end
+
+				-- Call turnoff on neighbors
+				for _, l in ipairs(mesecon.rules_link_rule_all(f.pos, r)) do
+					table.insert(frontiers, {pos = np, link = l})
+				end
 			end
+
+			mesecon.swap_node_force(f.pos, mesecon.get_conductor_off(node, f.link))
+		elseif mesecon.is_effector(node.name) then
+			table.insert(signals, {
+				pos = f.pos,
+				node = node,
+				link = f.link,
+				depth = depth
+			})
 		end
-	elseif mesecon:is_effector(node.name) then
-		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)
+		depth = depth + 1
+	end
+
+	for _, sig in ipairs(signals) do
+		mesecon.changesignal(sig.pos, sig.node, sig.link, mesecon.state.off, sig.depth)
+		if mesecon.is_effector_on(sig.node.name) and not mesecon.is_powered(sig.pos) then
+			mesecon.deactivate(sig.pos, sig.node, sig.link, sig.depth)
 		end
 	end
+
+	return true
 end
 
+-- Get all linking inputrules of inputnode (effector or conductor) that is connected to
+-- outputnode (receptor or conductor) at position `output` and has an output in direction `rule`
+function mesecon.rules_link_rule_all(output, rule)
+	local input = vector.add(output, rule)
+	local inputnode = mesecon.get_node_force(input)
+	local inputrules = mesecon.get_any_inputrules(inputnode)
+	if not inputrules then
+		return {}
+	end
+	local rules = {}
 
-function mesecon:connected_to_receptor(pos)
-	local node = minetest.get_node(pos)
+	for _, inputrule in ipairs(mesecon.flattenrules(inputrules)) do
+		-- Check if input accepts from output
+		if  vector.equals(vector.add(input, inputrule), output) then
+			table.insert(rules, inputrule)
+		end
+	end
 
-	-- Check if conductors around are connected
-	local rules = mesecon:get_any_inputrules(node)
+	return rules
+end
+
+-- Get all linking outputnodes of outputnode (receptor or conductor) that is connected to
+-- inputnode (effector or conductor) at position `input` and has an input in direction `rule`
+function mesecon.rules_link_rule_all_inverted(input, rule)
+	local output = vector.add(input, rule)
+	local outputnode = mesecon.get_node_force(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  vector.equals(vector.add(output, outputrule), input) then
+			table.insert(rules, mesecon.invertRule(outputrule))
+		end
+	end
+	return rules
+end
+
+function mesecon.is_powered(pos, rule)
+	local node = mesecon.get_node_force(pos)
+	local rules = mesecon.get_any_inputrules(node)
 	if not rules then return false end
 
-	for _, rule in ipairs(rules) do
-		local np = mesecon:addPosRule(pos, rule)
-		if mesecon:rules_link(np, pos) then
-			if mesecon:find_receptor_on(np, {}) then
-				return true
-			end
-		end
-	end
+	-- List of nodes that send out power to pos
+	local sourcepos = {}
 
-	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 = vector.add(pos, rname)
+				local nn = mesecon.get_node_force(np)
 
-function mesecon:find_receptor_on(pos, checked)
-	-- 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
-
-	-- add current position to checked
-	table.insert(checked, {x=pos.x, y=pos.y, z=pos.z})
-	local node = minetest.get_node(pos)
-
-	if mesecon:is_receptor_on(node.name) then
-		return true
-	end
-
-	if mesecon:is_conductor(node.name) then
-		local rules = mesecon:conductor_get_rules(node)
-		for _, rule in ipairs(rules) do
-			local np = mesecon:addPosRule(pos, rule)
-			if mesecon:rules_link(np, pos) then
-				if mesecon:find_receptor_on(np, checked) then
-					return true
+				if (mesecon.is_conductor_on(nn, mesecon.invertRule(rname))
+				or mesecon.is_receptor_on(nn.name)) then
+					table.insert(sourcepos, np)
 				end
 			end
 		end
-	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(outputrules) do
-		-- Check if output sends to input
-		if mesecon:cmpPos(mesecon:addPosRule(output, outputrule), input) then
-			for _, inputrule in ipairs(inputrules) do
-				-- Check if input accepts from output
-				if  mesecon:cmpPos(mesecon:addPosRule(input, inputrule), output) then
-					return true, inputrule.name
-				end
+	else
+		local rulenames = mesecon.rules_link_rule_all_inverted(pos, rule)
+		for _, rname in ipairs(rulenames) do
+			local np = vector.add(pos, rname)
+			local nn = mesecon.get_node_force(np)
+			if (mesecon.is_conductor_on (nn, mesecon.invertRule(rname))
+			or mesecon.is_receptor_on (nn.name)) then
+				table.insert(sourcepos, np)
 			end
 		end
 	end
-	return false
-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_from(pos, rule)
-	local np = mesecon:addPosRule(pos, rule)
-	local nn = minetest.get_node(np)
-
-	if (mesecon:is_conductor_on (nn.name) or mesecon:is_receptor_on (nn.name))
-	   and mesecon:rules_link(np, pos)
-	then
-		return true
-	end
-end
-
-function mesecon:is_powered(pos)
-	local node = minetest.get_node(pos)
-	local rules = mesecon:get_any_inputrules(node)
-	if not rules then return false end
-
-	for _, rule in ipairs(rules) do
-		if mesecon:is_powered_from(pos, rule) then return true end
-	end
-	
-	return false
+	-- Return FALSE if not powered, return list of sources if is powered
+	if (#sourcepos == 0) then return false
+	else return sourcepos end
 end
 
 --Rules rotation Functions:
-function mesecon:rotate_rules_right(rules)
+function mesecon.rotate_rules_right(rules)
 	local nr = {}
 	for i, rule in ipairs(rules) do
 		table.insert(nr, {
-			x = -rule.z, 
-			y =  rule.y, 
-			z =  rule.x})
+			x = -rule.z,
+			y =  rule.y,
+			z =  rule.x,
+			name = rule.name})
 	end
 	return nr
 end
 
-function mesecon:rotate_rules_left(rules)
+function mesecon.rotate_rules_left(rules)
 	local nr = {}
 	for i, rule in ipairs(rules) do
 		table.insert(nr, {
-			x =  rule.z, 
-			y =  rule.y, 
-			z = -rule.x})
+			x =  rule.z,
+			y =  rule.y,
+			z = -rule.x,
+			name = rule.name})
 	end
 	return nr
 end
 
-function mesecon:rotate_rules_down(rules)
+function mesecon.rotate_rules_down(rules)
 	local nr = {}
 	for i, rule in ipairs(rules) do
 		table.insert(nr, {
-			x = -rule.y, 
-			y =  rule.x, 
-			z =  rule.z})
+			x = -rule.y,
+			y =  rule.x,
+			z =  rule.z,
+			name = rule.name})
 	end
 	return nr
 end
 
-function mesecon:rotate_rules_up(rules)
+function mesecon.rotate_rules_up(rules)
 	local nr = {}
 	for i, rule in ipairs(rules) do
 		table.insert(nr, {
-			x =  rule.y, 
-			y = -rule.x, 
-			z =  rule.z})
+			x =  rule.y,
+			y = -rule.x,
+			z =  rule.z,
+			name = rule.name})
 	end
 	return nr
 end

mods/ITEMS/REDSTONE/mesecons/legacy.lua

@@ -0,0 +1,14 @@
+-- Un-forceload any forceloaded mapblocks from older versions of Mesecons which
+-- used forceloading instead of VoxelManipulators.
+local BLOCKSIZE = 16
+
+-- convert block hash --> node position
+local function unhash_blockpos(hash)
+	return vector.multiply(minetest.get_position_from_hash(hash), BLOCKSIZE)
+end
+
+local old_forceloaded_blocks = mesecon.file2table("mesecon_forceloaded")
+for hash, _ in pairs(old_forceloaded_blocks) do
+	minetest.forceload_free_block(unhash_blockpos(hash))
+end
+os.remove(minetest.get_worldpath()..DIR_DELIM.."mesecon_forceloaded")

mods/ITEMS/REDSTONE/mesecons/presets.lua

@@ -15,11 +15,13 @@ mesecon.rules.default =
  {x=0,  y=1,  z=-1},
  {x=0,  y=-1, z=-1}}
 
+mesecon.rules.pplate = mesecon.mergetable(mesecon.rules.default, {{x=0, y=-2, z=0}})
+
 mesecon.rules.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 = 1,  y =-1, z =-1},
  {x = 2,  y = 0, z = 0}}
 
@@ -28,15 +30,30 @@ mesecon.rules.flat =
  {x =-1, y = 0, z = 0},
  {x = 0, y = 0, z = 1},
  {x = 0, y = 0, z =-1}}
- 
+
+mesecon.rules.alldirs =
+{{x= 1, y= 0,  z= 0},
+ {x=-1, y= 0,  z= 0},
+ {x= 0, y= 1,  z= 0},
+ {x= 0, y=-1,  z= 0},
+ {x= 0, y= 0,  z= 1},
+ {x= 0, y= 0,  z=-1}}
+
 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)
+	local dir = minetest.facedir_to_dir(node.param2)
+	if dir.x == 1 then
+		-- No action needed
+	elseif dir.z == -1 then
+		rules=mesecon.rotate_rules_left(rules)
+	elseif dir.x == -1 then
+		rules=mesecon.rotate_rules_right(mesecon.rotate_rules_right(rules))
+	elseif dir.z == 1 then
+		rules=mesecon.rotate_rules_right(rules)
+	elseif dir.y == -1 then
+		rules=mesecon.rotate_rules_up(rules)
+	elseif dir.y == 1 then
+		rules=mesecon.rotate_rules_down(rules)
 	end
 	return rules
 end

mods/ITEMS/REDSTONE/mesecons/services.lua

@@ -1,28 +1,128 @@
-mesecon.on_placenode = function (pos, node)
-	if mesecon:is_receptor_on(node.name) then
-		mesecon:receptor_on(pos, mesecon:receptor_get_rules(node))
-	elseif mesecon:is_powered(pos) then
-		if mesecon:is_conductor(node.name) then
-			mesecon:turnon (pos)
-			mesecon:receptor_on (pos, mesecon:conductor_get_rules(node))
-		else
-			mesecon:changesignal(pos, node)
-			mesecon:activate(pos, node)
+-- Dig and place services
+
+mesecon.on_placenode = function(pos, node)
+	mesecon.execute_autoconnect_hooks_now(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
+		local sources = mesecon.is_powered(pos)
+		if sources 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)
+			for _, s in ipairs(sources) do
+				local rule = vector.subtract(pos, s)
+				mesecon.turnon(pos, rule)
+			end
+			--mesecon.receptor_on (pos, mesecon.conductor_get_rules(node))
+		elseif mesecon.is_conductor_on(node) then
+			minetest.swap_node(pos, {name = mesecon.get_conductor_off(node)})
+		end
+	end
+
+	-- Effectors: Send changesignal and activate or deactivate
+	if mesecon.is_effector(node.name) then
+		local powered_rules = {}
+		local unpowered_rules = {}
+
+		-- for each input rule, check if powered
+		for _, r in ipairs(mesecon.effector_get_rules(node)) do
+			local powered = mesecon.is_powered(pos, r)
+			if powered then table.insert(powered_rules, r)
+			else table.insert(unpowered_rules, r) end
+
+			local state = powered and mesecon.state.on or mesecon.state.off
+			mesecon.changesignal(pos, node, r, state, 1)
+		end
+
+		if (#powered_rules > 0) then
+			for _, r in ipairs(powered_rules) do
+				mesecon.activate(pos, node, r, 1)
+			end
+		else
+			for _, r in ipairs(unpowered_rules) do
+				mesecon.deactivate(pos, node, r, 1)
+			end
 		end
-	elseif mesecon:is_conductor_on(node.name) then
-		mesecon:swap_node(pos, mesecon:get_conductor_off(node.name))
-	elseif mesecon:is_effector_on (node.name) then
-		mesecon:deactivate(pos, node)
 	end
 end
 
-mesecon.on_dignode = function (pos, node)
-	if mesecon:is_conductor_on(node.name) 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))
+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
+
+	mesecon.execute_autoconnect_hooks_queue(pos, node)
 end
 
 minetest.register_on_placenode(mesecon.on_placenode)
 minetest.register_on_dignode(mesecon.on_dignode)
+
+-- Overheating service for fast circuits
+local OVERHEAT_MAX = mesecon.setting("overheat_max", 20)
+local COOLDOWN_TIME = mesecon.setting("cooldown_time", 2.0)
+local COOLDOWN_STEP = mesecon.setting("cooldown_granularity", 0.5)
+local COOLDOWN_MULTIPLIER = OVERHEAT_MAX / COOLDOWN_TIME
+local cooldown_timer = 0.0
+local object_heat = {}
+
+-- returns true if heat is too high
+function mesecon.do_overheat(pos)
+	local id = minetest.hash_node_position(pos)
+	local heat = (object_heat[id] or 0) + 1
+	object_heat[id] = heat
+	if heat >= OVERHEAT_MAX then
+		minetest.log("action", "Node overheats at " .. minetest.pos_to_string(pos))
+		object_heat[id] = nil
+		return true
+	end
+	return false
+end
+
+function mesecon.do_cooldown(pos)
+	local id = minetest.hash_node_position(pos)
+	object_heat[id] = nil
+end
+
+function mesecon.get_heat(pos)
+	local id = minetest.hash_node_position(pos)
+	return object_heat[id] or 0
+end
+
+function mesecon.move_hot_nodes(moved_nodes)
+	local new_heat = {}
+	for _, n in ipairs(moved_nodes) do
+		local old_id = minetest.hash_node_position(n.oldpos)
+		local new_id = minetest.hash_node_position(n.pos)
+		new_heat[new_id] = object_heat[old_id]
+		object_heat[old_id] = nil
+	end
+	for id, heat in pairs(new_heat) do
+		object_heat[id] = heat
+	end
+end
+
+local function global_cooldown(dtime)
+	cooldown_timer = cooldown_timer + dtime
+	if cooldown_timer < COOLDOWN_STEP then
+		return -- don't overload the CPU
+	end
+	local cooldown = COOLDOWN_MULTIPLIER * cooldown_timer
+	cooldown_timer = 0
+	for id, heat in pairs(object_heat) do
+		heat = heat - cooldown
+		if heat <= 0 then
+			object_heat[id] = nil -- free some RAM
+		else
+			object_heat[id] = heat
+		end
+	end
+end
+minetest.register_globalstep(global_cooldown)

mods/ITEMS/REDSTONE/mesecons/settings.lua

@@ -1,4 +1,15 @@
--- SETTINGS
-NEW_STYLE_WIRES  = true  -- true = new nodebox wires, false = old raillike wires
-PRESSURE_PLATE_INTERVAL = 0.04
-PISTON_MAXIMUM_PUSH = 12
+-- SETTINGS
+function mesecon.setting(setting, default)
+	if type(default) == "boolean" then
+		local read = minetest.setting_getbool("mesecon."..setting)
+		if read == nil then
+			return default
+		else
+			return read
+		end
+	elseif type(default) == "string" then
+		return minetest.setting_get("mesecon."..setting) or default
+	elseif type(default) == "number" then
+		return tonumber(minetest.setting_get("mesecon."..setting) or default)
+	end
+end

mods/ITEMS/REDSTONE/mesecons/util.lua

@@ -1,24 +1,390 @@
-function mesecon:swap_node(pos, name)
-	local node = minetest.get_node(pos)
-	local data = minetest.get_meta(pos):to_table()
-	node.name = name
-	minetest.add_node(pos, node)
-	minetest.get_meta(pos):from_table(data)
-end
-
-function mesecon:move_node(pos, newpos)
+function mesecon.move_node(pos, newpos)
 	local node = minetest.get_node(pos)
 	local meta = minetest.get_meta(pos):to_table()
 	minetest.remove_node(pos)
-	minetest.add_node(newpos, node)
+	minetest.set_node(newpos, node)
 	minetest.get_meta(pos):from_table(meta)
 end
 
+function mesecon.flattenrules(allrules)
+--[[
+	{
+		{
+			{xyz},
+			{xyz},
+		},
+		{
+			{xyz},
+			{xyz},
+		},
+	}
+--]]
+	if allrules[1] and
+	   allrules[1].x then
+		return allrules
+	end
 
-function mesecon:addPosRule(p, r)
-	return {x = p.x + r.x, y = p.y + r.y, z = p.z + r.z}
+	local shallowrules = {}
+	for _, metarule in ipairs( allrules) do
+	for _,     rule in ipairs(metarule ) do
+		table.insert(shallowrules, rule)
+	end
+	end
+	return shallowrules
+--[[
+	{
+		{xyz},
+		{xyz},
+		{xyz},
+		{xyz},
+	}
+--]]
 end
 
-function mesecon:cmpPos(p1, p2)
-	return (p1.x == p2.x and p1.y == p2.y and p1.z == p2.z)
+function mesecon.rule2bit(findrule, allrules)
+	--get the bit of the metarule the rule is in, or bit 1
+	if (allrules[1] and
+	    allrules[1].x) or
+	    not findrule then
+		return 1
+	end
+	for m,metarule in ipairs( allrules) do
+	for _,    rule in ipairs(metarule ) do
+		if vector.equals(findrule, rule) then
+			return m
+		end
+	end
+	end
+end
+
+function mesecon.rule2metaindex(findrule, allrules)
+	--get the metarule the rule is in, or allrules
+	if allrules[1].x then
+		return nil
+	end
+
+	if not(findrule) then
+		return mesecon.flattenrules(allrules)
+	end
+
+	for m, metarule in ipairs( allrules) do
+	for _,     rule in ipairs(metarule ) do
+		if vector.equals(findrule, rule) then
+			return m
+		end
+	end
+	end
+end
+
+function mesecon.rule2meta(findrule, allrules)
+	if #allrules == 0 then return {} end
+
+	local index = mesecon.rule2metaindex(findrule, allrules)
+	if index == nil then
+		if allrules[1].x then
+			return allrules
+		else
+			return {}
+		end
+	end
+	return allrules[index]
+end
+
+function mesecon.dec2bin(n)
+	local x, y = math.floor(n / 2), n % 2
+	if (n > 1) then
+		return mesecon.dec2bin(x)..y
+	else
+		return ""..y
+	end
+end
+
+function mesecon.getstate(nodename, states)
+	for state, name in ipairs(states) do
+		if name == nodename then
+			return state
+		end
+	end
+	error(nodename.." doesn't mention itself in "..dump(states))
+end
+
+function mesecon.getbinstate(nodename, states)
+	return mesecon.dec2bin(mesecon.getstate(nodename, states)-1)
+end
+
+function mesecon.get_bit(binary,bit)
+	bit = bit or 1
+	local c = binary:len()-(bit-1)
+	return binary:sub(c,c) == "1"
+end
+
+function mesecon.set_bit(binary,bit,value)
+	if value == "1" then
+		if not mesecon.get_bit(binary,bit) then
+			return mesecon.dec2bin(tonumber(binary,2)+math.pow(2,bit-1))
+		end
+	elseif value == "0" then
+		if mesecon.get_bit(binary,bit) then
+			return mesecon.dec2bin(tonumber(binary,2)-math.pow(2,bit-1))
+		end
+	end
+	return binary
+
+end
+
+function mesecon.invertRule(r)
+	return vector.multiply(r, -1)
+end
+
+function mesecon.tablecopy(table) -- deep table copy
+	if type(table) ~= "table" then return table end -- no need to copy
+	local newtable = {}
+
+	for idx, item in pairs(table) do
+		if type(item) == "table" then
+			newtable[idx] = mesecon.tablecopy(item)
+		else
+			newtable[idx] = item
+		end
+	end
+
+	return newtable
+end
+
+function mesecon.cmpAny(t1, t2)
+	if type(t1) ~= type(t2) then return false end
+	if type(t1) ~= "table" and type(t2) ~= "table" then return t1 == t2 end
+
+	for i, e in pairs(t1) do
+		if not mesecon.cmpAny(e, t2[i]) then return false end
+	end
+
+	return true
+end
+
+-- does not overwrite values; number keys (ipairs) are appended, not overwritten
+function mesecon.mergetable(source, dest)
+	local rval = mesecon.tablecopy(dest)
+
+	for k, v in pairs(source) do
+		rval[k] = dest[k] or mesecon.tablecopy(v)
+	end
+	for i, v in ipairs(source) do
+		table.insert(rval, mesecon.tablecopy(v))
+	end
+
+	return rval
+end
+
+function mesecon.register_node(name, spec_common, spec_off, spec_on)
+	spec_common.drop = spec_common.drop or name .. "_off"
+	spec_common.__mesecon_basename = name
+	spec_on.__mesecon_state = "on"
+	spec_off.__mesecon_state = "off"
+
+	spec_on = mesecon.mergetable(spec_common, spec_on);
+	spec_off = mesecon.mergetable(spec_common, spec_off);
+
+	minetest.register_node(name .. "_on", spec_on)
+	minetest.register_node(name .. "_off", spec_off)
+end
+
+-- swap onstate and offstate nodes, returns new state
+function mesecon.flipstate(pos, node)
+	local nodedef = minetest.registered_nodes[node.name]
+	local newstate
+	if (nodedef.__mesecon_state == "on") then newstate = "off" end
+	if (nodedef.__mesecon_state == "off") then newstate = "on" end
+
+	minetest.swap_node(pos, {name = nodedef.__mesecon_basename .. "_" .. newstate,
+		param2 = node.param2})
+
+	return newstate
+end
+
+-- File writing / reading utilities
+local wpath = minetest.get_worldpath()
+function mesecon.file2table(filename)
+	local f = io.open(wpath..DIR_DELIM..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
+
+function mesecon.table2file(filename, table)
+	local f = io.open(wpath..DIR_DELIM..filename, "w")
+	f:write(minetest.serialize(table))
+	f:close()
+end
+
+-- Block position "hashing" (convert to integer) functions for voxelmanip cache
+local BLOCKSIZE = 16
+
+-- convert node position --> block hash
+local function hash_blockpos(pos)
+	return minetest.hash_node_position({
+		x = math.floor(pos.x/BLOCKSIZE),
+		y = math.floor(pos.y/BLOCKSIZE),
+		z = math.floor(pos.z/BLOCKSIZE)
+	})
+end
+
+-- Maps from a hashed mapblock position (as returned by hash_blockpos) to a
+-- table.
+--
+-- Contents of the table are:
+-- “vm” → the VoxelManipulator
+-- “va” → the VoxelArea
+-- “data” → the data array
+-- “param1” → the param1 array
+-- “param2” → the param2 array
+-- “dirty” → true if data has been modified
+--
+-- Nil if no VM-based transaction is in progress.
+local vm_cache = nil
+
+-- Starts a VoxelManipulator-based transaction.
+--
+-- During a VM transaction, calls to vm_get_node and vm_swap_node operate on a
+-- cached copy of the world loaded via VoxelManipulators. That cache can later
+-- be committed to the real map by means of vm_commit or discarded by means of
+-- vm_abort.
+function mesecon.vm_begin()
+	vm_cache = {}
+end
+
+-- Finishes a VoxelManipulator-based transaction, freeing the VMs and map data
+-- and writing back any modified areas.
+function mesecon.vm_commit()
+	for hash, tbl in pairs(vm_cache) do
+		if tbl.dirty then
+			local vm = tbl.vm
+			vm:set_data(tbl.data)
+			vm:write_to_map()
+			vm:update_map()
+		end
+	end
+	vm_cache = nil
+end
+
+-- Finishes a VoxelManipulator-based transaction, freeing the VMs and throwing
+-- away any modified areas.
+function mesecon.vm_abort()
+	vm_cache = nil
+end
+
+-- Gets the cache entry covering a position, populating it if necessary.
+local function vm_get_or_create_entry(pos)
+	local hash = hash_blockpos(pos)
+	local tbl = vm_cache[hash]
+	if not tbl then
+		local vm = minetest.get_voxel_manip(pos, pos)
+		local min_pos, max_pos = vm:get_emerged_area()
+		local va = VoxelArea:new{MinEdge = min_pos, MaxEdge = max_pos}
+		tbl = {vm = vm, va = va, data = vm:get_data(), param1 = vm:get_light_data(), param2 = vm:get_param2_data(), dirty = false}
+		vm_cache[hash] = tbl
+	end
+	return tbl
+end
+
+-- Gets the node at a given position during a VoxelManipulator-based
+-- transaction.
+function mesecon.vm_get_node(pos)
+	local tbl = vm_get_or_create_entry(pos)
+	local index = tbl.va:indexp(pos)
+	local node_value = tbl.data[index]
+	if node_value == core.CONTENT_IGNORE then
+		return nil
+	else
+		local node_param1 = tbl.param1[index]
+		local node_param2 = tbl.param2[index]
+		return {name = minetest.get_name_from_content_id(node_value), param1 = node_param1, param2 = node_param2}
+	end
+end
+
+-- Sets a node’s name during a VoxelManipulator-based transaction.
+--
+-- Existing param1, param2, and metadata are left alone.
+function mesecon.vm_swap_node(pos, name)
+	local tbl = vm_get_or_create_entry(pos)
+	local index = tbl.va:indexp(pos)
+	tbl.data[index] = minetest.get_content_id(name)
+	tbl.dirty = true
+end
+
+-- Gets the node at a given position, regardless of whether it is loaded or
+-- not, respecting a transaction if one is in progress.
+--
+-- Outside a VM transaction, if the mapblock is not loaded, it is pulled into
+-- the server’s main map data cache and then accessed from there.
+--
+-- Inside a VM transaction, the transaction’s VM cache is used.
+function mesecon.get_node_force(pos)
+	if vm_cache then
+		return mesecon.vm_get_node(pos)
+	else
+		local node = minetest.get_node_or_nil(pos)
+		if node == nil then
+			-- Node is not currently loaded; use a VoxelManipulator to prime
+			-- the mapblock cache and try again.
+			minetest.get_voxel_manip(pos, pos)
+			node = minetest.get_node_or_nil(pos)
+		end
+		return node
+	end
+end
+
+-- Swaps the node at a given position, regardless of whether it is loaded or
+-- not, respecting a transaction if one is in progress.
+--
+-- Outside a VM transaction, if the mapblock is not loaded, it is pulled into
+-- the server’s main map data cache and then accessed from there.
+--
+-- Inside a VM transaction, the transaction’s VM cache is used.
+--
+-- This function can only be used to change the node’s name, not its parameters
+-- or metadata.
+function mesecon.swap_node_force(pos, name)
+	if vm_cache then
+		return mesecon.vm_swap_node(pos, name)
+	else
+		-- This serves to both ensure the mapblock is loaded and also hand us
+		-- the old node table so we can preserve param2.
+		local node = mesecon.get_node_force(pos)
+		node.name = name
+		minetest.swap_node(pos, node)
+	end
+end
+
+-- Autoconnect Hooks
+-- Nodes like conductors may change their appearance and their connection rules
+-- right after being placed or after being dug, e.g. the default wires use this
+-- to automatically connect to linking nodes after placement.
+-- After placement, the update function will be executed immediately so that the
+-- possibly changed rules can be taken into account when recalculating the circuit.
+-- After digging, the update function will be queued and executed after
+-- recalculating the circuit. The update function must take care of updating the
+-- node at the given position itself, but also all of the other nodes the given
+-- position may have (had) a linking connection to.
+mesecon.autoconnect_hooks = {}
+
+-- name: A unique name for the hook, e.g. "foowire". Used to name the actionqueue function.
+-- fct: The update function with parameters function(pos, node)
+function mesecon.register_autoconnect_hook(name, fct)
+	mesecon.autoconnect_hooks[name] = fct
+	mesecon.queue:add_function("autoconnect_hook_"..name, fct)
+end
+
+function mesecon.execute_autoconnect_hooks_now(pos, node)
+	for _, fct in pairs(mesecon.autoconnect_hooks) do
+		fct(pos, node)
+	end
+end
+
+function mesecon.execute_autoconnect_hooks_queue(pos, node)
+	for name in pairs(mesecon.autoconnect_hooks) do
+		mesecon.queue:add_action(pos, "autoconnect_hook_"..name, {node})
+	end
 end

mods/ITEMS/REDSTONE/mesecons_button/init.lua

@@ -20,13 +20,13 @@ end
 mesecon.button_turnoff = function (pos)
 	local node = minetest.get_node(pos)
 	if node.name=="mesecons_button:button_stone_on" then --has not been dug
-		mesecon:swap_node(pos, "mesecons_button:button_stone_off")
+		minetest.swap_node(pos, {name="mesecons_button:button_stone_off",param2=node.param2})
 		minetest.sound_play("mesecons_button_pop", {pos=pos})
-		mesecon:receptor_off(pos, button_get_output_rules(node))
+		mesecon.receptor_off(pos, button_get_output_rules(node))
 	elseif node.name=="mesecons_button:button_wood_on" then --has not been dug
-		mesecon:swap_node(pos, "mesecons_button:button_wood_off")
+		minetest.swap_node(pos, {name="mesecons_button:button_wood_off",param2=node.param2})
 		minetest.sound_play("mesecons_button_pop", {pos=pos})
-		mesecon:receptor_off(pos, button_get_output_rules(node))
+		mesecon.receptor_off(pos, button_get_output_rules(node))
 	end
 end
 
@@ -111,8 +111,8 @@ minetest.register_node("mesecons_button:button_stone_off", {
 	on_place = on_button_place,
 	node_placement_prediction = "",
 	on_rightclick = function (pos, node)
-		mesecon:swap_node(pos, "mesecons_button:button_stone_on")
-		mesecon:receptor_on(pos, button_get_output_rules(node))
+		minetest.swap_node(pos, {name="mesecons_button:button_stone_on", param2=node.param2})
+		mesecon.receptor_on(pos, button_get_output_rules(node))
 		minetest.sound_play("mesecons_button_push", {pos=pos})
 		minetest.after(1, mesecon.button_turnoff, pos)
 	end,
@@ -170,8 +170,8 @@ minetest.register_node("mesecons_button:button_wood_off", {
 	on_place = on_button_place,
 	node_placement_prediction = "",
 	on_rightclick = function (pos, node)
-		mesecon:swap_node(pos, "mesecons_button:button_wood_on")
-		mesecon:receptor_on(pos, button_get_output_rules(node))
+		minetest.swap_node(pos, {name="mesecons_button:button_wood_on", param2=node.param2})
+		mesecon.receptor_on(pos, button_get_output_rules(node))
 		minetest.sound_play("mesecons_button_push", {pos=pos})
 		minetest.after(1.5, mesecon.button_turnoff, pos)
 	end,

mods/ITEMS/REDSTONE/mesecons_delayer/init.lua

@@ -2,7 +2,7 @@
 local delayer_get_output_rules = function(node)
 	local rules = {{x = -1, y = 0, z = 0}}
 	for i = 0, node.param2 do
-		rules = mesecon:rotate_rules_left(rules)
+		rules = mesecon.rotate_rules_left(rules)
 	end
 	return rules
 end
@@ -10,7 +10,7 @@ end
 local delayer_get_input_rules = function(node)
 	local rules = {{x = 1, y = 0, z = 0}}
 	for i = 0, node.param2 do
-		rules = mesecon:rotate_rules_left(rules)
+		rules = mesecon.rotate_rules_left(rules)
 	end
 	return rules
 end
@@ -19,25 +19,25 @@ end
 
 local delayer_turnon = function(params)
 	local rules = delayer_get_output_rules(params.node)
-	mesecon:receptor_on(params.pos, rules)
+	mesecon.receptor_on(params.pos, rules)
 end
 
 local delayer_turnoff = function(params)
 	local rules = delayer_get_output_rules(params.node)
-	mesecon:receptor_off(params.pos, rules)
+	mesecon.receptor_off(params.pos, rules)
 end
 
 local delayer_activate = function(pos, node)
 	local def = minetest.registered_nodes[node.name]
 	local time = def.delayer_time
-	mesecon:swap_node(pos, def.delayer_onstate)
+	minetest.swap_node(pos, {name=def.delayer_onstate, param2=node.param2})
 	minetest.after(time, delayer_turnon , {pos = pos, node = node})
 end
 
 local delayer_deactivate = function(pos, node)
 	local def = minetest.registered_nodes[node.name]
 	local time = def.delayer_time
-	mesecon:swap_node(pos, def.delayer_offstate)
+	minetest.swap_node(pos, {name=def.delayer_offstate, param2=node.param2})
 	minetest.after(time, delayer_turnoff, {pos = pos, node = node})
 end
 
@@ -133,13 +133,13 @@ minetest.register_node("mesecons_delayer:delayer_off_"..tostring(i), {
 	drop = 'mesecons_delayer:delayer_off_1',
 	on_rightclick = function (pos, node)
 		if node.name=="mesecons_delayer:delayer_off_1" then
-			mesecon:swap_node(pos,"mesecons_delayer:delayer_off_2")
+			minetest.swap_node(pos, {name="mesecons_delayer:delayer_off_2", param2=node.param2})
 		elseif node.name=="mesecons_delayer:delayer_off_2" then
-			mesecon:swap_node(pos,"mesecons_delayer:delayer_off_3")
+			minetest.swap_node(pos, {name="mesecons_delayer:delayer_off_3", param2=node.param2})
 		elseif node.name=="mesecons_delayer:delayer_off_3" then
-			mesecon:swap_node(pos,"mesecons_delayer:delayer_off_4")
+			minetest.swap_node(pos, {name="mesecons_delayer:delayer_off_4", param2=node.param2})
 		elseif node.name=="mesecons_delayer:delayer_off_4" then
-			mesecon:swap_node(pos,"mesecons_delayer:delayer_off_1")
+			minetest.swap_node(pos, {name="mesecons_delayer:delayer_off_1", param2=node.param2})
 		end
 	end,
 	delayer_time = delaytime,
@@ -193,13 +193,13 @@ minetest.register_node("mesecons_delayer:delayer_on_"..tostring(i), {
 	drop = 'mesecons_delayer:delayer_off_1',
 	on_rightclick = function (pos, node)
 		if node.name=="mesecons_delayer:delayer_on_1" then
-			mesecon:swap_node(pos,"mesecons_delayer:delayer_on_2")
+			minetest.swap_node(pos, {name="mesecons_delayer:delayer_on_2",param2=node.param2})
 		elseif node.name=="mesecons_delayer:delayer_on_2" then
-			mesecon:swap_node(pos,"mesecons_delayer:delayer_on_3")
+			minetest.swap_node(pos, {name="mesecons_delayer:delayer_on_3",param2=node.param2})
 		elseif node.name=="mesecons_delayer:delayer_on_3" then
-			mesecon:swap_node(pos,"mesecons_delayer:delayer_on_4")
+			minetest.swap_node(pos, {name="mesecons_delayer:delayer_on_4",param2=node.param2})
 		elseif node.name=="mesecons_delayer:delayer_on_4" then
-			mesecon:swap_node(pos,"mesecons_delayer:delayer_on_1")
+			minetest.swap_node(pos, {name="mesecons_delayer:delayer_on_1",param2=node.param2})
 		end
 	end,
 	delayer_time = delaytime,

mods/ITEMS/REDSTONE/mesecons_lightstone/init.lua

@@ -8,7 +8,7 @@ minetest.register_node("mesecons_lightstone:lightstone_off", {
 	sounds = mcl_sounds.node_sound_glass_defaults(),
 	mesecons = {effector = {
 		action_on = function (pos, node)
-			mesecon:swap_node(pos, "mesecons_lightstone:lightstone_on")
+			minetest.swap_node(pos, {name="mesecons_lightstone:lightstone_on", param2 = node.param2})
 		end
 	}},
 	_mcl_blast_resistance = 1.5,
@@ -27,7 +27,7 @@ minetest.register_node("mesecons_lightstone:lightstone_on", {
 	sounds = mcl_sounds.node_sound_glass_defaults(),
 	mesecons = {effector = {
 		action_off = function (pos, node)
-			mesecon:swap_node(pos, "mesecons_lightstone:lightstone_off")
+			minetest.swap_node(pos, {name="mesecons_lightstone:lightstone_off", param2 = node.param2})
 		end
 	}},
 	_mcl_blast_resistance = 1.5,

mods/ITEMS/REDSTONE/mesecons_mvps/init.lua

@@ -1,25 +1,20 @@
--- Register stoppers for pistons
-mesecon.mvps_stoppers={}
+--register stoppers for movestones/pistons
 
--- Register nodes which drop as item when pushed or pulled
-mesecon.mvps_droppers={}
+mesecon.mvps_stoppers = {}
+mesecon.mvps_droppers = {}
+mesecon.on_mvps_move = {}
+mesecon.mvps_unmov = {}
 
-function mesecon:is_mvps_stopper(node, pushdir, stack, stackid)
-	local get_stopper = mesecon.mvps_stoppers[node.name]
-	if type (get_stopper) == "function" then
-		get_stopper = get_stopper(node, pushdir, stack, stackid)
-	end
-	return get_stopper
+--- Objects (entities) that cannot be moved
+function mesecon.register_mvps_unmov(objectname)
+	mesecon.mvps_unmov[objectname] = true;
 end
 
-function mesecon:register_mvps_stopper(nodename, get_stopper)
-	if get_stopper == nil then
-			get_stopper = true
-	end
-	mesecon.mvps_stoppers[nodename] = get_stopper
+function mesecon.is_mvps_unmov(objectname)
+	return mesecon.mvps_unmov[objectname]
 end
 
-function mesecon:is_mvps_dropper(node, pushdir, stack, stackid)
+function mesecon.is_mvps_dropper(node, pushdir, stack, stackid)
 	local get_dropper = mesecon.mvps_droppers[node.name]
 	if type (get_dropper) == "function" then
 		get_dropper = get_dropper(node, pushdir, stack, stackid)
@@ -30,47 +25,158 @@ function mesecon:is_mvps_dropper(node, pushdir, stack, stackid)
 	return get_dropper
 end
 
-function mesecon:register_mvps_dropper(nodename, get_dropper)
+function mesecon.register_mvps_dropper(nodename, get_dropper)
 	if get_dropper == nil then
 		get_dropper = true
 	end
 	mesecon.mvps_droppers[nodename] = get_dropper
 end
 
-function mesecon:mvps_process_stack(stack)
-	-- update mesecons for placed nodes ( has to be done after all nodes have been added )
-	for _, n in ipairs(stack) do
-		core.check_for_falling(n.pos)
-		mesecon.on_placenode(n.pos, minetest.get_node(n.pos))
-		mesecon:update_autoconnect(n.pos)
+-- Nodes that cannot be pushed / pulled by movestones, pistons
+function mesecon.is_mvps_stopper(node, pushdir, stack, stackid)
+	-- unknown nodes are always stoppers
+	if not minetest.registered_nodes[node.name] then
+		return true
+	end
+
+	local get_stopper = mesecon.mvps_stoppers[node.name]
+	if type (get_stopper) == "function" then
+		get_stopper = get_stopper(node, pushdir, stack, stackid)
+	end
+
+	return get_stopper
+end
+
+function mesecon.register_mvps_stopper(nodename, get_stopper)
+	if get_stopper == nil then
+			get_stopper = true
+	end
+	mesecon.mvps_stoppers[nodename] = get_stopper
+end
+
+-- Functions to be called on mvps movement
+function mesecon.register_on_mvps_move(callback)
+	mesecon.on_mvps_move[#mesecon.on_mvps_move+1] = callback
+end
+
+local function on_mvps_move(moved_nodes)
+	for _, callback in ipairs(mesecon.on_mvps_move) do
+		callback(moved_nodes)
 	end
 end
 
-function mesecon:mvps_push(pos, dir, maximum) -- pos: pos of mvps; dir: direction of push; maximum: maximum nodes to be pushed
-	np = {x = pos.x, y = pos.y, z = pos.z}
+function mesecon.mvps_process_stack(stack)
+	-- update mesecons for placed nodes ( has to be done after all nodes have been added )
+	for _, n in ipairs(stack) do
+		mesecon.on_placenode(n.pos, minetest.get_node(n.pos))
+	end
+end
 
-	-- determine the number of nodes to be pushed
-	local nodes = {}
-	while true do
-		nn = minetest.get_node_or_nil(np)
-		if not nn or #nodes > maximum then
-			-- don't push at all, something is in the way (unloaded map or too many nodes)
-			return
-		end
+-- tests if the node can be pushed into, e.g. air, water, grass
+local function node_replaceable(name)
+	if name == "ignore" then return true end
 
-		if nn.name == "air"
-		or minetest.registered_nodes[nn.name].liquidtype ~= "none" then --is liquid
-			break
-		end
-
-		table.insert (nodes, {node = nn, pos = np})
-
-		np = mesecon:addPosRule(np, dir)
+	if minetest.registered_nodes[name] then
+		return minetest.registered_nodes[name].buildable_to or false
 	end
 
-	-- determine if one of the nodes blocks the push
+	return false
+end
+
+function mesecon.mvps_get_stack(pos, dir, maximum, all_pull_sticky)
+	-- determine the number of nodes to be pushed
+	local nodes = {}
+	local frontiers = {pos}
+
+	while #frontiers > 0 do
+		local np = frontiers[1]
+		local nn = minetest.get_node(np)
+
+		if not node_replaceable(nn.name) then
+			table.insert(nodes, {node = nn, pos = np})
+			if #nodes > maximum then return nil end
+
+			-- add connected nodes to frontiers, connected is a vector list
+			-- the vectors must be absolute positions
+			local connected = {}
+			if minetest.registered_nodes[nn.name]
+			and minetest.registered_nodes[nn.name].mvps_sticky then
+				connected = minetest.registered_nodes[nn.name].mvps_sticky(np, nn)
+			end
+
+			table.insert(connected, vector.add(np, dir))
+
+			-- If adjacent node is sticky block and connects add that
+			-- position to the connected table
+			for _, r in ipairs(mesecon.rules.alldirs) do
+				local adjpos = vector.add(np, r)
+				local adjnode = minetest.get_node(adjpos)
+				if minetest.registered_nodes[adjnode.name]
+				and minetest.registered_nodes[adjnode.name].mvps_sticky then
+					local sticksto = minetest.registered_nodes[adjnode.name]
+						.mvps_sticky(adjpos, adjnode)
+
+					-- connects to this position?
+					for _, link in ipairs(sticksto) do
+						if vector.equals(link, np) then
+							table.insert(connected, adjpos)
+						end
+					end
+				end
+			end
+
+			if all_pull_sticky then
+				table.insert(connected, vector.subtract(np, dir))
+			end
+
+			-- Make sure there are no duplicates in frontiers / nodes before
+			-- adding nodes in "connected" to frontiers
+			for _, cp in ipairs(connected) do
+				local duplicate = false
+				for _, rp in ipairs(nodes) do
+					if vector.equals(cp, rp.pos) then
+						duplicate = true
+					end
+				end
+				for _, fp in ipairs(frontiers) do
+					if vector.equals(cp, fp) then
+						duplicate = true
+					end
+				end
+				if not duplicate then
+					table.insert(frontiers, cp)
+				end
+			end
+		end
+		table.remove(frontiers, 1)
+	end
+
+	return nodes
+end
+
+function mesecon.mvps_push(pos, dir, maximum)
+	return mesecon.mvps_push_or_pull(pos, dir, dir, maximum)
+end
+
+function mesecon.mvps_pull_all(pos, dir, maximum)
+	return mesecon.mvps_push_or_pull(pos, vector.multiply(dir, -1), dir, maximum, true)
+end
+
+function mesecon.mvps_pull_single(pos, dir, maximum)
+	return mesecon.mvps_push_or_pull(pos, vector.multiply(dir, -1), dir, maximum)
+end
+
+-- pos: pos of mvps; stackdir: direction of building the stack
+-- movedir: direction of actual movement
+-- maximum: maximum nodes to be pushed
+-- all_pull_sticky: All nodes are sticky in the direction that they are pulled from
+function mesecon.mvps_push_or_pull(pos, stackdir, movedir, maximum, all_pull_sticky)
+	local nodes = mesecon.mvps_get_stack(pos, movedir, maximum, all_pull_sticky)
+
+	if not nodes then return end
+	-- determine if one of the nodes blocks the push / pull
 	for id, n in ipairs(nodes) do
-		if mesecon:is_mvps_stopper(n.node, dir, nodes, id) then
+		if mesecon.is_mvps_stopper(n.node, movedir, nodes, id) then
 			return
 		end
 	end
@@ -79,10 +185,10 @@ function mesecon:mvps_push(pos, dir, maximum) -- pos: pos of mvps; dir: directio
 	-- remove all nodes
 	for id, n in ipairs(nodes) do
 		n.meta = minetest.get_meta(n.pos):to_table()
-		local is_dropper = mesecon:is_mvps_dropper(n.node, dir, nodes, id)
+		local is_dropper = mesecon.is_mvps_dropper(n.node, movedir, nodes, id)
 		if is_dropper then
 			local drops = minetest.get_node_drops(n.node.name, "")
-			local droppos = vector.add(n.pos, dir)
+			local droppos = vector.add(n.pos, movedir)
 			minetest.handle_node_drops(droppos, drops, nil)
 		end
 		minetest.remove_node(n.pos)
@@ -98,7 +204,6 @@ function mesecon:mvps_push(pos, dir, maximum) -- pos: pos of mvps; dir: directio
 			break
 		end
 		mesecon.on_dignode(n.pos, n.node)
-		mesecon:update_autoconnect(n.pos)
 	end
 
 	-- add nodes
@@ -106,7 +211,7 @@ function mesecon:mvps_push(pos, dir, maximum) -- pos: pos of mvps; dir: directio
 		if first_dropper and id >= first_dropper then
 			break
 		end
-		np = mesecon:addPosRule(n.pos, dir)
+		np = vector.add(n.pos, movedir)
 		minetest.add_node(np, n.node)
 		minetest.get_meta(np):from_table(n.meta)
 	end
@@ -115,93 +220,112 @@ function mesecon:mvps_push(pos, dir, maximum) -- pos: pos of mvps; dir: directio
 		if first_dropper and i >= first_dropper then
 			break
 		end
-		nodes[i].pos = mesecon:addPosRule(nodes[i].pos, dir)
+		nodes[i].pos = vector.add(nodes[i].pos, movedir)
 	end
 
-	return true, nodes
-end
-
-function mesecon:mvps_pull_single(pos, dir) -- pos: pos of mvps; direction: direction of pull (matches push direction for sticky pistons)
-	np = mesecon:addPosRule(pos, dir)
-	nn = minetest.get_node(np)
-
-	if minetest.registered_nodes[nn.name].liquidtype == "none"
-	and not mesecon:is_mvps_stopper(nn, {x = -dir.x, y = -dir.y, z = -dir.z}, {{pos = np, node = nn}}, 1)
-	and not mesecon:is_mvps_dropper(nn, {x = -dir.x, y = -dir.y, z = -dir.z}, {{pos = np, node = nn}}, 1) then
-		local meta = minetest.get_meta(np):to_table()
-		minetest.remove_node(np)
-		minetest.add_node(pos, nn)
-		minetest.get_meta(pos):from_table(meta)
-
-		core.check_for_falling(np)
-		core.check_for_falling(pos)
-		mesecon.on_dignode(np, nn)
-		mesecon:update_autoconnect(np)
+	local moved_nodes = {}
+	local oldstack = mesecon.tablecopy(nodes)
+	for i in ipairs(nodes) do
+		moved_nodes[i] = {}
+		moved_nodes[i].oldpos = nodes[i].pos
+		nodes[i].pos = vector.add(nodes[i].pos, movedir)
+		moved_nodes[i].pos = nodes[i].pos
+		moved_nodes[i].node = nodes[i].node
+		moved_nodes[i].meta = nodes[i].meta
 	end
-	return {{pos = np, node = {param2 = 0, name = "air"}}, {pos = pos, node = nn}}
+
+	on_mvps_move(moved_nodes)
+
+	return true, nodes, oldstack
 end
 
-function mesecon:mvps_pull_all(pos, direction) -- pos: pos of mvps; direction: direction of pull
-		local lpos = {x=pos.x-direction.x, y=pos.y-direction.y, z=pos.z-direction.z} -- 1 away
-		local lnode = minetest.get_node(lpos)
-		local lpos2 = {x=pos.x-direction.x*2, y=pos.y-direction.y*2, z=pos.z-direction.z*2} -- 2 away
-		local lnode2 = minetest.get_node(lpos2)
+mesecon.register_on_mvps_move(function(moved_nodes)
+	for _, n in ipairs(moved_nodes) do
+		mesecon.on_placenode(n.pos, n.node)
+	end
+end)
 
-		if lnode.name ~= "ignore" and lnode.name ~= "air" and minetest.registered_nodes[lnode.name].liquidtype == "none" then return end
-		if lnode2.name == "ignore" or lnode2.name == "air" or not(minetest.registered_nodes[lnode2.name].liquidtype == "none") then return end
+function mesecon.mvps_move_objects(pos, dir, nodestack)
+	local objects_to_move = {}
 
-		local oldpos = {x=lpos2.x+direction.x, y=lpos2.y+direction.y, z=lpos2.z+direction.z}
-		repeat
-			lnode2 = minetest.get_node(lpos2)
-			minetest.add_node(oldpos, {name=lnode2.name})
-			core.check_for_falling(oldpos)
-			oldpos = {x=lpos2.x, y=lpos2.y, z=lpos2.z}
-			lpos2.x = lpos2.x-direction.x
-			lpos2.y = lpos2.y-direction.y
-			lpos2.z = lpos2.z-direction.z
-			lnode = minetest.get_node(lpos2)
-		until lnode.name=="air" or lnode.name=="ignore" or not(minetest.registered_nodes[lnode2.name].liquidtype == "none")
-		minetest.remove_node(oldpos)
+	-- Move object at tip of stack, pushpos is position at tip of stack
+	local pushpos = vector.add(pos, vector.multiply(dir, #nodestack))
+
+	local objects = minetest.get_objects_inside_radius(pushpos, 1)
+	for _, obj in ipairs(objects) do
+		table.insert(objects_to_move, obj)
+	end
+
+	-- Move objects lying/standing on the stack (before it was pushed - oldstack)
+	if tonumber(minetest.setting_get("movement_gravity")) > 0 and dir.y == 0 then
+		-- If gravity positive and dir horizontal, push players standing on the stack
+		for _, n in ipairs(nodestack) do
+			local p_above = vector.add(n.pos, {x=0, y=1, z=0})
+			local objects = minetest.get_objects_inside_radius(p_above, 1)
+			for _, obj in ipairs(objects) do
+				table.insert(objects_to_move, obj)
+			end
+		end
+	end
+
+	for _, obj in ipairs(objects_to_move) do
+		local entity = obj:get_luaentity()
+		if not entity or not mesecon.is_mvps_unmov(entity.name) then
+			local np = vector.add(obj:getpos(), dir)
+
+			--move only if destination is not solid
+			local nn = minetest.get_node(np)
+			if not ((not minetest.registered_nodes[nn.name])
+			or minetest.registered_nodes[nn.name].walkable) then
+				obj:setpos(np)
+			end
+		end
+	end
 end
 
-mesecon:register_mvps_stopper("mcl_core:obsidian")
-mesecon:register_mvps_stopper("mcl_core:bedrock")
-mesecon:register_mvps_stopper("mcl_core:barrier")
-mesecon:register_mvps_stopper("mcl_core:void")
-mesecon:register_mvps_stopper("mcl_chests:chest")
-mesecon:register_mvps_stopper("mcl_chests:chest_left")
-mesecon:register_mvps_stopper("mcl_chests:chest_right")
-mesecon:register_mvps_stopper("mcl_chests:trapped_chest")
-mesecon:register_mvps_stopper("mcl_chests:trapped_chest_left")
-mesecon:register_mvps_stopper("mcl_chests:trapped_chest_right")
-mesecon:register_mvps_stopper("mcl_chests:trapped_chest_on")
-mesecon:register_mvps_stopper("mcl_chests:trapped_chest_on_left")
-mesecon:register_mvps_stopper("mcl_chests:trapped_chest_on_right")
-mesecon:register_mvps_stopper("mcl_chests:ender_chest")
-mesecon:register_mvps_stopper("mcl_furnaces:furnace")
-mesecon:register_mvps_stopper("mcl_furnaces:furnace_active")
-mesecon:register_mvps_stopper("mcl_hoppers:hopper")
-mesecon:register_mvps_stopper("mcl_hoppers:hopper_side")
-mesecon:register_mvps_stopper("mcl_droppers:dropper")
-mesecon:register_mvps_stopper("mcl_droppers:dropper_up")
-mesecon:register_mvps_stopper("mcl_droppers:dropper_down")
-mesecon:register_mvps_stopper("mcl_dispensers:dispenser")
-mesecon:register_mvps_stopper("mcl_dispensers:dispenser_up")
-mesecon:register_mvps_stopper("mcl_dispensers:dispenser_down")
-mesecon:register_mvps_stopper("mcl_anvils:anvil")
-mesecon:register_mvps_stopper("mcl_anvils:anvil_damage_1")
-mesecon:register_mvps_stopper("mcl_anvils:anvil_damage_2")
-mesecon:register_mvps_stopper("mcl_jukebox:jukebox")
-mesecon:register_mvps_stopper("mcl_mobspawners:spawner")
-mesecon:register_mvps_stopper("mcl_signs:standing_sign")
-mesecon:register_mvps_stopper("mcl_signs:wall_sign")
-mesecon:register_mvps_stopper("mesecons_commandblock:commandblock_off")
-mesecon:register_mvps_stopper("mesecons_commandblock:commandblock_on")
-mesecon:register_mvps_stopper("mesecons_solarpanel:solar_panel_off")
-mesecon:register_mvps_stopper("mesecons_solarpanel:solar_panel_on")
-mesecon:register_mvps_stopper("mesecons_solarpanel:solar_panel_inverted_off")
-mesecon:register_mvps_stopper("mesecons_solarpanel:solar_panel_inverted_on")
-mesecon:register_mvps_stopper("mesecons_noteblock:noteblock")
-mesecon:register_mvps_stopper("3d_armor_stand:armor_stand")
+mesecon.register_mvps_stopper("mcl_core:obsidian")
+mesecon.register_mvps_stopper("mcl_core:bedrock")
+mesecon.register_mvps_stopper("mcl_core:barrier")
+mesecon.register_mvps_stopper("mcl_core:realm_barrier")
+mesecon.register_mvps_stopper("mcl_core:void")
+mesecon.register_mvps_stopper("mcl_chests:chest")
+mesecon.register_mvps_stopper("mcl_chests:chest_left")
+mesecon.register_mvps_stopper("mcl_chests:chest_right")
+mesecon.register_mvps_stopper("mcl_chests:trapped_chest")
+mesecon.register_mvps_stopper("mcl_chests:trapped_chest_left")
+mesecon.register_mvps_stopper("mcl_chests:trapped_chest_right")
+mesecon.register_mvps_stopper("mcl_chests:trapped_chest_on")
+mesecon.register_mvps_stopper("mcl_chests:trapped_chest_on_left")
+mesecon.register_mvps_stopper("mcl_chests:trapped_chest_on_right")
+mesecon.register_mvps_stopper("mcl_chests:ender_chest")
+mesecon.register_mvps_stopper("mcl_furnaces:furnace")
+mesecon.register_mvps_stopper("mcl_furnaces:furnace_active")
+mesecon.register_mvps_stopper("mcl_hoppers:hopper")
+mesecon.register_mvps_stopper("mcl_hoppers:hopper_side")
+mesecon.register_mvps_stopper("mcl_droppers:dropper")
+mesecon.register_mvps_stopper("mcl_droppers:dropper_up")
+mesecon.register_mvps_stopper("mcl_droppers:dropper_down")
+mesecon.register_mvps_stopper("mcl_dispensers:dispenser")
+mesecon.register_mvps_stopper("mcl_dispensers:dispenser_up")
+mesecon.register_mvps_stopper("mcl_dispensers:dispenser_down")
+mesecon.register_mvps_stopper("mcl_anvils:anvil")
+mesecon.register_mvps_stopper("mcl_anvils:anvil_damage_1")
+mesecon.register_mvps_stopper("mcl_anvils:anvil_damage_2")
+mesecon.register_mvps_stopper("mcl_jukebox:jukebox")
+mesecon.register_mvps_stopper("mcl_mobspawners:spawner")
+mesecon.register_mvps_stopper("mcl_signs:standing_sign")
+mesecon.register_mvps_stopper("mcl_signs:wall_sign")
+mesecon.register_mvps_stopper("mesecons_commandblock:commandblock_off")
+mesecon.register_mvps_stopper("mesecons_commandblock:commandblock_on")
+mesecon.register_mvps_stopper("mesecons_solarpanel:solar_panel_off")
+mesecon.register_mvps_stopper("mesecons_solarpanel:solar_panel_on")
+mesecon.register_mvps_stopper("mesecons_solarpanel:solar_panel_inverted_off")
+mesecon.register_mvps_stopper("mesecons_solarpanel:solar_panel_inverted_on")
+mesecon.register_mvps_stopper("mesecons_noteblock:noteblock")
+mesecon.register_mvps_stopper("3d_armor_stand:armor_stand")
+mesecon.register_mvps_stopper("mcl_banners:standing_banner")
+mesecon.register_mvps_stopper("mcl_banners:hanging_banner")
 mesecon:register_mvps_stopper("mcl_portals:portal")
 mesecon:register_mvps_stopper("mcl_portals:portal_end")
+
+mesecon.register_on_mvps_move(mesecon.move_hot_nodes)

mods/ITEMS/REDSTONE/mesecons_pistons/init.lua

@@ -1,3 +1,5 @@
+local PISTON_MAXIMUM_PUSH = 12
+
 -- Get mesecon rules of pistons
 piston_rules =
 {{x=0,  y=0,  z=1}, --everything apart from z- (pusher side)
@@ -33,7 +35,7 @@ local piston_down_rules =
 local piston_get_rules = function (node)
 	local rules = piston_rules
 	for i = 1, node.param2 do
-		rules = mesecon:rotate_rules_left(rules)
+		rules = mesecon.rotate_rules_left(rules)
 	end
 	return rules
 end
@@ -41,7 +43,7 @@ end
 piston_facedir_direction = function (node)
 	local rules = {{x = 0, y = 0, z = -1}}
 	for i = 1, node.param2 do
-		rules = mesecon:rotate_rules_left(rules)
+		rules = mesecon.rotate_rules_left(rules)
 	end
 	return rules[1]
 end
@@ -58,7 +60,7 @@ local piston_remove_pusher = function (pos, node)
 	local pistonspec = minetest.registered_nodes[node.name].mesecons_piston
 
 	local dir = piston_get_direction(pistonspec.dir, node)
-	local pusherpos = mesecon:addPosRule(pos, dir)
+	local pusherpos = vector.add(pos, dir)
 	local pushername = minetest.get_node(pusherpos).name
 
 	if pushername == pistonspec.pusher then --make sure there actually is a pusher (for compatibility reasons mainly)
@@ -75,9 +77,9 @@ end
 local piston_on = function (pos, node)
 	local pistonspec = minetest.registered_nodes[node.name].mesecons_piston
 
-	dir = piston_get_direction(pistonspec.dir, node)
-	local np = mesecon:addPosRule(pos, dir)
-	success, stack = mesecon:mvps_push(np, dir, PISTON_MAXIMUM_PUSH)
+	local dir = piston_get_direction(pistonspec.dir, node)
+	local np = vector.add(pos, dir)
+	local success, stack, oldstack = mesecon.mvps_push(np, dir, PISTON_MAXIMUM_PUSH)
 	if success then
 		minetest.add_node(pos, {param2 = node.param2, name = pistonspec.onname})
 		minetest.add_node(np, {param2 = node.param2, name = pistonspec.pusher})
@@ -85,7 +87,8 @@ local piston_on = function (pos, node)
 		if below.name == "mcl_farming:soil" or below.name == "mcl_farming:soil_wet" then
 			minetest.set_node({x=np.x,y=np.y-1,z=np.z}, {name = "mcl_core:dirt"})
 		end
-		mesecon:mvps_process_stack(stack)
+		mesecon.mvps_process_stack(stack)
+		mesecon.mvps_move_objects(np, dir, oldstack)
 		minetest.sound_play("piston_extend", {
 			pos = pos,
 			max_hear_distance = 20,
@@ -100,10 +103,10 @@ local piston_off = function (pos, node)
 	piston_remove_pusher (pos, node)
 
 	if pistonspec.sticky then
-		dir = piston_get_direction(pistonspec.dir, node)
-		pullpos = mesecon:addPosRule(pos, dir)
-		stack = mesecon:mvps_pull_single(pullpos, dir)
-		mesecon:mvps_process_stack(stack)
+		local dir = piston_get_direction(pistonspec.dir, node)
+		local pullpos = vector.add(pos, vector.multiply(dir, 2))
+		local stack = mesecon.mvps_pull_single(pullpos, vector.multiply(dir, -1), PISTON_MAXIMUM_PUSH)
+		mesecon.mvps_process_stack(pos, dir, stack)
 	end
 end
 
@@ -759,14 +762,14 @@ local piston_pusher_up_down_get_stopper = function (node, dir, stack, stackid)
 	return true
 end
 
-mesecon:register_mvps_stopper("mesecons_pistons:piston_pusher_normal", piston_pusher_get_stopper)
-mesecon:register_mvps_stopper("mesecons_pistons:piston_pusher_sticky", piston_pusher_get_stopper)
+mesecon.register_mvps_stopper("mesecons_pistons:piston_pusher_normal", piston_pusher_get_stopper)
+mesecon.register_mvps_stopper("mesecons_pistons:piston_pusher_sticky", piston_pusher_get_stopper)
 
-mesecon:register_mvps_stopper("mesecons_pistons:piston_up_pusher_normal", piston_pusher_up_down_get_stopper)
-mesecon:register_mvps_stopper("mesecons_pistons:piston_up_pusher_sticky", piston_pusher_up_down_get_stopper)
+mesecon.register_mvps_stopper("mesecons_pistons:piston_up_pusher_normal", piston_pusher_up_down_get_stopper)
+mesecon.register_mvps_stopper("mesecons_pistons:piston_up_pusher_sticky", piston_pusher_up_down_get_stopper)
 
-mesecon:register_mvps_stopper("mesecons_pistons:piston_down_pusher_normal", piston_pusher_up_down_get_stopper)
-mesecon:register_mvps_stopper("mesecons_pistons:piston_down_pusher_sticky", piston_pusher_up_down_get_stopper)
+mesecon.register_mvps_stopper("mesecons_pistons:piston_down_pusher_normal", piston_pusher_up_down_get_stopper)
+mesecon.register_mvps_stopper("mesecons_pistons:piston_down_pusher_sticky", piston_pusher_up_down_get_stopper)
 
 
 -- Register pistons as stoppers if they would be seperated from the stopper
@@ -783,12 +786,12 @@ end
 local piston_get_stopper = function (node, dir, stack, stackid)
 	pistonspec = minetest.registered_nodes[node.name].mesecons_piston
 	dir = piston_get_direction(pistonspec.dir, node)
-	local pusherpos  = mesecon:addPosRule(stack[stackid].pos, dir)
+	local pusherpos  = vector.add(stack[stackid].pos, dir)
 	local pushernode = minetest.get_node(pusherpos)
 
 	if minetest.registered_nodes[node.name].mesecons_piston.pusher == pushernode.name then
 		for _, s in ipairs(stack) do
-			if  mesecon:cmpPos(s.pos, pusherpos) -- pusher is also to be pushed
+			if  mesecon.cmpPos(s.pos, pusherpos) -- pusher is also to be pushed
 			and s.node.param2 == node.param2 then
 				return false
 			end
@@ -797,14 +800,14 @@ local piston_get_stopper = function (node, dir, stack, stackid)
 	return true
 end
 
-mesecon:register_mvps_stopper("mesecons_pistons:piston_normal_on", piston_get_stopper)
-mesecon:register_mvps_stopper("mesecons_pistons:piston_sticky_on", piston_get_stopper)
+mesecon.register_mvps_stopper("mesecons_pistons:piston_normal_on", piston_get_stopper)
+mesecon.register_mvps_stopper("mesecons_pistons:piston_sticky_on", piston_get_stopper)
 
-mesecon:register_mvps_stopper("mesecons_pistons:piston_up_normal_on", piston_up_down_get_stopper)
-mesecon:register_mvps_stopper("mesecons_pistons:piston_up_sticky_on", piston_up_down_get_stopper)
+mesecon.register_mvps_stopper("mesecons_pistons:piston_up_normal_on", piston_up_down_get_stopper)
+mesecon.register_mvps_stopper("mesecons_pistons:piston_up_sticky_on", piston_up_down_get_stopper)
 
-mesecon:register_mvps_stopper("mesecons_pistons:piston_down_normal_on", piston_up_down_get_stopper)
-mesecon:register_mvps_stopper("mesecons_pistons:piston_down_sticky_on", piston_up_down_get_stopper)
+mesecon.register_mvps_stopper("mesecons_pistons:piston_down_normal_on", piston_up_down_get_stopper)
+mesecon.register_mvps_stopper("mesecons_pistons:piston_down_sticky_on", piston_up_down_get_stopper)
 
 --craft recipes
 minetest.register_craft({

mods/ITEMS/REDSTONE/mesecons_pressureplates/init.lua

@@ -1,3 +1,5 @@
+local PRESSURE_PLATE_INTERVAL = 0.04
+
 local pp_box_off = {
 	type = "fixed",
 	fixed = { -7/16, -8/16, -7/16, 7/16, -7/16, 7/16 },
@@ -8,32 +10,26 @@ local pp_box_on = {
 	fixed = { -7/16, -8/16, -7/16, 7/16, -7.5/16, 7/16 },
 }
 
-pp_on_timer = function (pos, elapsed)
-	local node   = minetest.get_node(pos)
-	local ppspec = minetest.registered_nodes[node.name].pressureplate
+local function pp_on_timer(pos, elapsed)
+	local node = minetest.get_node(pos)
+	local basename = minetest.registered_nodes[node.name].pressureplate_basename
 
 	-- This is a workaround for a strange bug that occurs when the server is started
 	-- For some reason the first time on_timer is called, the pos is wrong
-	if not ppspec then return end
+	if not basename then return end
 
 	local objs   = minetest.get_objects_inside_radius(pos, 1)
-	local two_below = mesecon:addPosRule(pos, {x = 0, y = -2, z = 0})
+	local two_below = vector.add(pos, vector.new(0, -2, 0))
 
-	if objs[1] == nil and node.name == ppspec.onstate then
-		minetest.add_node(pos, {name = ppspec.offstate})
-		mesecon:receptor_off(pos)
-		-- force deactivation of mesecon two blocks below (hacky)
-		if not mesecon:connected_to_receptor(two_below) then
-			mesecon:turnoff(two_below)
-		end
-	elseif node.name == ppspec.offstate then
+	if objs[1] == nil and node.name == basename .. "_on" then
+		minetest.set_node(pos, {name = basename .. "_off"})
+		mesecon.receptor_off(pos, mesecon.rules.pplate)
+	elseif node.name == basename .. "_off" then
 		for k, obj in pairs(objs) do
 			local objpos = obj:getpos()
 			if objpos.y > pos.y-1 and objpos.y < pos.y then
-				minetest.add_node(pos, {name=ppspec.onstate})
-				mesecon:receptor_on(pos)
-				-- force activation of mesecon two blocks below (hacky)
-				mesecon:turnon(two_below)
+				minetest.set_node(pos, {name = basename .. "_on"})
+				mesecon.receptor_on(pos, mesecon.rules.pplate )
 			end
 		end
 	end
@@ -41,112 +37,83 @@ pp_on_timer = function (pos, elapsed)
 end
 
 -- Register a Pressure Plate
--- offstate:	name of the pressure plate when inactive
--- onstate:	name of the pressure plate when active
+-- basename:    base name of the pressure plate
 -- description:	description displayed in the player's inventory
--- tiles_off:	textures of the pressure plate when inactive
--- tiles_on:	textures of the pressure plate when active
--- image:	inventory and wield image of the pressure plate
+-- textures_off:textures of the pressure plate when inactive
+-- textures_on:	textures of the pressure plate when active
+-- image_w:	wield image of the pressure plate
+-- image_i:	inventory image of the pressure plate
 -- recipe:	crafting recipe of the pressure plate
 -- sounds:	sound table (like in minetest.register_node)
 -- plusgroups:	group memberships (attached_node=1 and not_in_creative_inventory=1 are already used)
 
-function mesecon:register_pressure_plate(offstate, onstate, description, texture_off, texture_on, recipe, sounds, plusgroups)
-	local ppspec = {
-		offstate = offstate,
-		onstate  = onstate
-	}
-
+function mesecon.register_pressure_plate(basename, description, textures_off, textures_on, image_w, image_i, recipe, sounds, plusgroups)
 	local groups_off = table.copy(plusgroups)
 	groups_off.attached_node = 1
 	groups_off.dig_by_piston = 1
-
-	minetest.register_node(offstate, {
-		drawtype = "nodebox",
-		tiles = {texture_off},
-		wield_image = texture_off,
-		wield_scale = { x=1, y=1, z=0.5 },
-		paramtype = "light",
-		sunlight_propagates = true,
-		selection_box = pp_box_off,
-		node_box = pp_box_off,
-		groups = groups_off,
-		is_ground_content = false,
-	    	description = description,
-		_doc_items_longdesc = "A pressure plate is a redstone component which supplies its surrounding blocks with redstone power while someone or something rests on top of it.",
-		pressureplate = ppspec,
-		on_timer = pp_on_timer,
-		sounds = sounds,
-		mesecons = {receptor = {
-			state = mesecon.state.off
-		}},
-		on_construct = function(pos)
-			minetest.get_node_timer(pos):start(PRESSURE_PLATE_INTERVAL)
-		end,
-		_mcl_blast_resistance = 2.5,
-		_mcl_hardness = 0.5,
-	})
-
-	local groups_on = table.copy(groups_off)
+	groups_on = table.copy(groups_off)
 	groups_on.not_in_creative_inventory = 1
 
-	minetest.register_node(onstate, {
+	mesecon.register_node(basename, {
 		drawtype = "nodebox",
-		tiles = {texture_on},
-		wield_image = texture_on,
-		wield_scale = { x=1, y=1, z=0.25 },
+		inventory_image = image_i,
+		wield_image = image_w,
 		paramtype = "light",
-		sunlight_propagates = true,
-		selection_box = pp_box_on,
-		node_box = pp_box_on,
-		groups = groups_on,
-		is_ground_content = false,
-		drop = offstate,
-		pressureplate = ppspec,
+	    	description = description,
 		on_timer = pp_on_timer,
-		sounds = sounds,
-		mesecons = {receptor = {
-			state = mesecon.state.on
-		}},
 		on_construct = function(pos)
 			minetest.get_node_timer(pos):start(PRESSURE_PLATE_INTERVAL)
 		end,
-		after_dig_node = function(pos)
-			local two_below = mesecon:addPosRule(pos, {x = 0, y = -2, z = 0})
-			if not mesecon:connected_to_receptor(two_below) then
-				mesecon:turnoff(two_below)
-			end
-		end,
+		sounds = sounds,
+
+		pressureplate_basename = basename,
 		_mcl_blast_resistance = 2.5,
 		_mcl_hardness = 0.5,
+	},{
+		node_box = pp_box_off,
+		selection_box = pp_box_off,
+		groups = groups_off,
+		tiles = textures_off,
+
+		mesecons = {receptor = { state = mesecon.state.off, rules = mesecon.rules.pplate }},
+		_doc_items_longdesc = "A pressure plate is a redstone component which supplies its surrounding blocks with redstone power while someone or something rests on top of it.",
+	},{
+		node_box = pp_box_on,
+		selection_box = pp_box_on,
+		groups = groups_on,
+		tiles = textures_on,
+
+		mesecons = {receptor = { state = mesecon.state.on, rules = mesecon.rules.pplate }},
 	})
 
 	minetest.register_craft({
-		output = offstate,
+		output = basename .. "_off",
 		recipe = recipe,
 	})
 
 	if minetest.get_modpath("doc") then
-		doc.add_entry_alias("nodes", offstate, "nodes", onstate)
+		doc.add_entry_alias("nodes", basename .. "_off", "nodes", basename .. "_on")
 	end
 end
 
-mesecon:register_pressure_plate(
-	"mesecons_pressureplates:pressure_plate_wood_off",
-	"mesecons_pressureplates:pressure_plate_wood_on",
+mesecon.register_pressure_plate(
+	"mesecons_pressureplates:pressure_plate_wood",
 	"Wooden Pressure Plate",
+	{"default_wood.png"},
+	{"default_wood.png"},
 	"default_wood.png",
-	"default_wood.png",
+	nil,
 	{{"group:wood", "group:wood"}},
 	mcl_sounds.node_sound_wood_defaults(),
 	{axey=1, material_wood=1})
 
-mesecon:register_pressure_plate(
-	"mesecons_pressureplates:pressure_plate_stone_off",
-	"mesecons_pressureplates:pressure_plate_stone_on",
+mesecon.register_pressure_plate(
+	"mesecons_pressureplates:pressure_plate_stone",
 	"Stone Pressure Plate",
+	{"default_stone.png"},
+	{"default_stone.png"},
 	"default_stone.png",
-	"default_stone.png",
+	nil,
 	{{"mcl_core:stone", "mcl_core:stone"}},
 	mcl_sounds.node_sound_stone_defaults(),
 	{pickaxey=1, material_stone=1})

mods/ITEMS/REDSTONE/mesecons_solarpanel/init.lua

@@ -28,7 +28,7 @@ minetest.register_node("mesecons_solarpanel:solar_panel_on", {
 	}},
 	on_rightclick = function(pos, node, clicker, pointed_thing)
 		minetest.swap_node(pos, {name = "mesecons_solarpanel:solar_panel_inverted_off"})
-		mesecon:receptor_off(pos)
+		mesecon.receptor_off(pos)
 	end,
 	_mcl_blast_resistance = 1,
 	_mcl_hardness = 0.2,
@@ -62,7 +62,7 @@ minetest.register_node("mesecons_solarpanel:solar_panel_off", {
 	}},
 	on_rightclick = function(pos, node, clicker, pointed_thing)
 		minetest.swap_node(pos, {name = "mesecons_solarpanel:solar_panel_inverted_on"})
-		mesecon:receptor_on(pos)
+		mesecon.receptor_on(pos)
 	end,
 	_mcl_blast_resistance = 1,
 	_mcl_hardness = 0.2,
@@ -87,7 +87,7 @@ minetest.register_abm({
 
 		if light >= 12 and minetest.get_timeofday() > 0.2 and minetest.get_timeofday() < 0.8 then
 			minetest.set_node(pos, {name="mesecons_solarpanel:solar_panel_on", param2=node.param2})
-			mesecon:receptor_on(pos)
+			mesecon.receptor_on(pos)
 		end
 	end,
 })
@@ -102,7 +102,7 @@ minetest.register_abm({
 
 		if light < 12 then
 			minetest.set_node(pos, {name="mesecons_solarpanel:solar_panel_off", param2=node.param2})
-			mesecon:receptor_off(pos)
+			mesecon.receptor_off(pos)
 		end
 	end,
 })
@@ -137,7 +137,7 @@ minetest.register_node("mesecons_solarpanel:solar_panel_inverted_on", {
 	}},
 	on_rightclick = function(pos, node, clicker, pointed_thing)
 		minetest.swap_node(pos, {name = "mesecons_solarpanel:solar_panel_off"})
-		mesecon:receptor_off(pos)
+		mesecon.receptor_off(pos)
 	end,
 	_mcl_blast_resistance = 1,
 	_mcl_hardness = 0.2,
@@ -172,7 +172,7 @@ minetest.register_node("mesecons_solarpanel:solar_panel_inverted_off", {
 	}},
 	on_rightclick = function(pos, node, clicker, pointed_thing)
 		minetest.swap_node(pos, {name = "mesecons_solarpanel:solar_panel_on"})
-		mesecon:receptor_on(pos)
+		mesecon.receptor_on(pos)
 	end,
 	_mcl_blast_resistance = 1,
 	_mcl_hardness = 0.2,
@@ -188,7 +188,7 @@ minetest.register_abm({
 
 		if light < 12 then
 			minetest.set_node(pos, {name="mesecons_solarpanel:solar_panel_inverted_on", param2=node.param2})
-			mesecon:receptor_on(pos)
+			mesecon.receptor_on(pos)
 		end
 	end,
 })
@@ -203,7 +203,7 @@ minetest.register_abm({
 
 		if light >= 12 and minetest.get_timeofday() > 0.8 and minetest.get_timeofday() < 0.2 then
 			minetest.set_node(pos, {name="mesecons_solarpanel:solar_panel_inverted_off", param2=node.param2})
-			mesecon:receptor_off(pos)
+			mesecon.receptor_off(pos)
 		end
 	end,
 })

mods/ITEMS/REDSTONE/mesecons_torch/init.lua

@@ -2,15 +2,15 @@
 
 local rotate_torch_rules = function (rules, param2)
 	if param2 == 5 then
-		return mesecon:rotate_rules_right(rules)
+		return mesecon.rotate_rules_right(rules)
 	elseif param2 == 2 then
-		return mesecon:rotate_rules_right(mesecon:rotate_rules_right(rules)) --180 degrees
+		return mesecon.rotate_rules_right(mesecon.rotate_rules_right(rules)) --180 degrees
 	elseif param2 == 4 then
-		return mesecon:rotate_rules_left(rules)
+		return mesecon.rotate_rules_left(rules)
 	elseif param2 == 1 then
-		return mesecon:rotate_rules_down(rules)
+		return mesecon.rotate_rules_down(rules)
 	elseif param2 == 0 then
-		return mesecon:rotate_rules_up(rules)
+		return mesecon.rotate_rules_up(rules)
 	else
 		return rules
 	end
@@ -128,26 +128,26 @@ minetest.register_abm({
 	action = function(pos, node)
 		local is_powered = false
 		for _, rule in ipairs(torch_get_input_rules(node)) do
-			local src = mesecon:addPosRule(pos, rule)
-			if mesecon:is_power_on(src) then
+			local src = vector.add(pos, rule)
+			if mesecon.is_power_on(src) then
 				is_powered = true
 			end
 		end
 
 		if is_powered then
 			if node.name == "mesecons_torch:mesecon_torch_on" then
-				mesecon:swap_node(pos, "mesecons_torch:mesecon_torch_off")
-				mesecon:receptor_off(pos, torch_get_output_rules(node))
+				minetest.swap_node(pos, {name="mesecons_torch:mesecon_torch_off", param2=node.param2})
+				mesecon.receptor_off(pos, torch_get_output_rules(node))
 			elseif node.name == "mesecons_torch:mesecon_torch_on_wall" then
-				mesecon:swap_node(pos, "mesecons_torch:mesecon_torch_off_wall")
-				mesecon:receptor_off(pos, torch_get_output_rules(node))
+				minetest.swap_node(pos, {name="mesecons_torch:mesecon_torch_off_wall", param2=node.param2})
+				mesecon.receptor_off(pos, torch_get_output_rules(node))
 			end
 		elseif node.name == "mesecons_torch:mesecon_torch_off" then
-			mesecon:swap_node(pos, "mesecons_torch:mesecon_torch_on")
-			mesecon:receptor_on(pos, torch_get_output_rules(node))
+			minetest.swap_node(pos, {name="mesecons_torch:mesecon_torch_on", param2=node.param2})
+			mesecon.receptor_on(pos, torch_get_output_rules(node))
 		elseif node.name == "mesecons_torch:mesecon_torch_off_wall" then
-			mesecon:swap_node(pos, "mesecons_torch:mesecon_torch_on_wall")
-			mesecon:receptor_on(pos, torch_get_output_rules(node))
+			minetest.swap_node(pos, {name="mesecons_torch:mesecon_torch_on_wall", param2=node.param2})
+			mesecon.receptor_on(pos, torch_get_output_rules(node))
 		end
 	end
 })

mods/ITEMS/REDSTONE/mesecons_walllever/init.lua

@@ -33,8 +33,8 @@ minetest.register_node("mesecons_walllever:wall_lever_off", {
 	_doc_items_longdesc = "A lever is a redstone component which can be flipped on and off. It supplies redstone power to the blocks behind while it is in the “on” state.",
 	_doc_items_usagehelp = "Right-click the lever to flip it on or off.",
 	on_rightclick = function (pos, node)
-		mesecon:swap_node(pos, "mesecons_walllever:wall_lever_on")
-		mesecon:receptor_on(pos, mesecon.rules.buttonlike_get(node))
+		minetest.swap_node(pos, {name="mesecons_walllever:wall_lever_on", param2=node.param2})
+		mesecon.receptor_on(pos, mesecon.rules.buttonlike_get(node))
 		minetest.sound_play("mesecons_lever", {pos=pos})
 	end,
 	sounds = mcl_sounds.node_sound_wood_defaults(),
@@ -76,8 +76,8 @@ minetest.register_node("mesecons_walllever:wall_lever_on", {
 	description="Lever",
 	_doc_items_create_entry = false,
 	on_rightclick = function (pos, node)
-		mesecon:swap_node(pos, "mesecons_walllever:wall_lever_off")
-		mesecon:receptor_off(pos, mesecon.rules.buttonlike_get(node))
+		minetest.swap_node(pos, {name="mesecons_walllever:wall_lever_off", param2=node.param2})
+		mesecon.receptor_off(pos, mesecon.rules.buttonlike_get(node))
 		minetest.sound_play("mesecons_lever", {pos=pos})
 	end,
 	sounds = mcl_sounds.node_sound_wood_defaults(),

mods/ITEMS/REDSTONE/mesecons_wires/depends.txt

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

mods/ITEMS/REDSTONE/mesecons_wires/init.lua

@@ -0,0 +1,264 @@
+-- naming scheme: wire:(xp)(zp)(xm)(zm)(xpyp)(zpyp)(xmyp)(zmyp)_on/off
+-- where x= x direction, z= z direction, y= y direction, p = +1, m = -1, e.g. xpym = {x=1, y=-1, z=0}
+-- The (xp)/(zpyp)/.. statements shall be replaced by either 0 or 1
+-- Where 0 means the wire has no visual connection to that direction and
+-- 1 means that the wire visually connects to that other node.
+
+-- #######################
+-- ## Update wire looks ##
+-- #######################
+
+-- self_pos = pos of any mesecon node, from_pos = pos of conductor to getconnect for
+local wire_getconnect = function (from_pos, self_pos)
+	local node = minetest.get_node(self_pos)
+	if minetest.registered_nodes[node.name]
+	and minetest.registered_nodes[node.name].mesecons then
+		-- rules of node to possibly connect to
+		local rules = {}
+		if (minetest.registered_nodes[node.name].mesecon_wire) then
+			rules = mesecon.rules.default
+		else
+			rules = mesecon.get_any_rules(node)
+		end
+
+		for _, r in ipairs(mesecon.flattenrules(rules)) do
+			if (vector.equals(vector.add(self_pos, r), from_pos)) then
+				return true
+			end
+		end
+	end
+	return false
+end
+
+-- Update this node
+local wire_updateconnect = function (pos)
+	local connections = {}
+
+	for _, r in ipairs(mesecon.rules.default) do
+		if wire_getconnect(pos, vector.add(pos, r)) then
+			table.insert(connections, r)
+		end
+	end
+
+	local nid = {}
+	for _, vec in ipairs(connections) do
+		-- flat component
+		if vec.x ==  1 then nid[0] = "1" end
+		if vec.z ==  1 then nid[1] = "1" end
+		if vec.x == -1 then nid[2] = "1" end
+		if vec.z == -1 then nid[3] = "1"  end
+
+		-- slopy component
+		if vec.y == 1 then
+			if vec.x ==  1 then nid[4] = "1" end
+			if vec.z ==  1 then nid[5] = "1" end
+			if vec.x == -1 then nid[6] = "1" end
+			if vec.z == -1 then nid[7] = "1" end
+		end
+	end
+
+	local nodeid = 	  (nid[0] or "0")..(nid[1] or "0")..(nid[2] or "0")..(nid[3] or "0")
+			..(nid[4] or "0")..(nid[5] or "0")..(nid[6] or "0")..(nid[7] or "0")
+
+	local state_suffix = string.find(minetest.get_node(pos).name, "_off") and "_off" or "_on"
+	minetest.set_node(pos, {name = "mesecons:wire_"..nodeid..state_suffix})
+end
+
+local update_on_place_dig = function (pos, node)
+	-- Update placed node (get_node again as it may have been dug)
+	local nn = minetest.get_node(pos)
+	if (minetest.registered_nodes[nn.name])
+	and (minetest.registered_nodes[nn.name].mesecon_wire) then
+		wire_updateconnect(pos)
+	end
+
+	-- Update nodes around it
+	local rules = {}
+	if minetest.registered_nodes[node.name]
+	and minetest.registered_nodes[node.name].mesecon_wire then
+		rules = mesecon.rules.default
+	else
+		rules = mesecon.get_any_rules(node)
+	end
+	if (not rules) then return end
+
+	for _, r in ipairs(mesecon.flattenrules(rules)) do
+		local np = vector.add(pos, r)
+		if minetest.registered_nodes[minetest.get_node(np).name]
+		and minetest.registered_nodes[minetest.get_node(np).name].mesecon_wire then
+			wire_updateconnect(np)
+		end
+	end
+end
+
+mesecon.register_autoconnect_hook("wire", update_on_place_dig)
+
+-- ############################
+-- ## Wire node registration ##
+-- ############################
+-- Nodeboxes:
+local box_center = {-1/16, -.5, -1/16, 1/16, -.5+1/64, 1/16}
+local box_bump1 =  { -2/16, -8/16,  -2/16, 2/16, -.5+1/64, 2/16 }
+
+local nbox_nid =
+{
+	[0] = {1/16, -.5, -1/16, 8/16, -.5+1/64, 1/16}, -- x positive
+	[1] = {-1/16, -.5, 1/16, 1/16, -.5+1/64, 8/16}, -- z positive
+	[2] = {-8/16, -.5, -1/16, -1/16, -.5+1/64, 1/16}, -- x negative
+	[3] = {-1/16, -.5, -8/16, 1/16, -.5+1/64, -1/16}, -- z negative
+
+	[4] = {.5-1/16, -.5+1/16, -1/16, .5, .4999+1/64, 1/16}, -- x positive up
+	[5] = {-1/16, -.5+1/16, .5-1/16, 1/16, .4999+1/64, .5}, -- z positive up
+	[6] = {-.5, -.5+1/16, -1/16, -.5+1/16, .4999+1/64, 1/16}, -- x negative up
+	[7] = {-1/16, -.5+1/16, -.5, 1/16, .4999+1/64, -.5+1/16}  -- z negative up
+}
+
+local selectionbox =
+{
+	type = "fixed",
+	fixed = {-.5, -.5, -.5, .5, -.5+1/16, .5}
+}
+
+-- go to the next nodeid (ex.: 01000011 --> 01000100)
+local nid_inc = function() end
+nid_inc = function (nid)
+	local i = 0
+	while nid[i-1] ~= 1 do
+		nid[i] = (nid[i] ~= 1) and 1 or 0
+		i = i + 1
+	end
+
+	-- BUT: Skip impossible nodeids:
+	if ((nid[0] == 0 and nid[4] == 1) or (nid[1] == 0 and nid[5] == 1)
+	or (nid[2] == 0 and nid[6] == 1) or (nid[3] == 0 and nid[7] == 1)) then
+		return nid_inc(nid)
+	end
+
+	return i <= 8
+end
+
+local function register_wires()
+	local nid = {}
+	while true do
+		-- Create group specifiction and nodeid string (see note above for details)
+		local nodeid = 	  (nid[0] or "0")..(nid[1] or "0")..(nid[2] or "0")..(nid[3] or "0")
+				..(nid[4] or "0")..(nid[5] or "0")..(nid[6] or "0")..(nid[7] or "0")
+
+		-- Calculate nodebox
+		local nodebox = {type = "fixed", fixed={box_center}}
+		for i=0,7 do
+			if nid[i] == 1 then
+				table.insert(nodebox.fixed, nbox_nid[i])
+			end
+		end
+
+		-- Add bump to nodebox if curved
+		if (nid[0] == 1 and nid[1] == 1) or (nid[1] == 1 and nid[2] == 1)
+		or (nid[2] == 1 and nid[3] == 1) or (nid[3] == 1 and nid[0] == 1) then
+			table.insert(nodebox.fixed, box_bump1)
+		end
+
+		-- If nothing to connect to, still make a nodebox of a straight wire
+		if nodeid == "00000000" then
+			nodebox.fixed = {-8/16, -.5, -1/16, 8/16, -.5+1/16, 1/16}
+		end
+
+		local rules = {}
+		if (nid[0] == 1) then table.insert(rules, vector.new( 1,  0,  0)) end
+		if (nid[1] == 1) then table.insert(rules, vector.new( 0,  0,  1)) end
+		if (nid[2] == 1) then table.insert(rules, vector.new(-1,  0,  0)) end
+		if (nid[3] == 1) then table.insert(rules, vector.new( 0,  0, -1)) end
+
+		if (nid[0] == 1) then table.insert(rules, vector.new( 1, -1,  0)) end
+		if (nid[1] == 1) then table.insert(rules, vector.new( 0, -1,  1)) end
+		if (nid[2] == 1) then table.insert(rules, vector.new(-1, -1,  0)) end
+		if (nid[3] == 1) then table.insert(rules, vector.new( 0, -1, -1)) end
+
+		if (nid[4] == 1) then table.insert(rules, vector.new( 1,  1,  0)) end
+		if (nid[5] == 1) then table.insert(rules, vector.new( 0,  1,  1)) end
+		if (nid[6] == 1) then table.insert(rules, vector.new(-1,  1,  0)) end
+		if (nid[7] == 1) then table.insert(rules, vector.new( 0,  1, -1)) end
+
+		local meseconspec_off = { conductor = {
+			rules = rules,
+			state = mesecon.state.off,
+			onstate = "mesecons:wire_"..nodeid.."_on"
+		}}
+
+		local meseconspec_on = { conductor = {
+			rules = rules,
+			state = mesecon.state.on,
+			offstate = "mesecons:wire_"..nodeid.."_off"
+		}}
+
+		local groups_on = {dig_immediate = 3, mesecon_conductor_craftable = 1,
+			not_in_creative_inventory = 1, attached_node = 1, dig_by_water = 1,destroy_by_lava_flow=1, dig_by_piston = 1}
+		local groups_off = {dig_immediate = 3, mesecon_conductor_craftable = 1,
+			attached_node = 1, dig_by_water = 1,destroy_by_lava_flow=1, dig_by_piston = 1}
+		if nodeid ~= "00000000" then
+			groups_off["not_in_creative_inventory"] = 1
+		end
+
+		-- Wire textures
+		local ratio_off = 128
+		local ratio_on = 192
+		local crossing_off = "(redstone_redstone_dust_dot.png^redstone_redstone_dust_line0.png^(redstone_redstone_dust_line1.png^[transformR90))^[colorize:#FF0000:"..ratio_off
+		local crossing_on = "(redstone_redstone_dust_dot.png^redstone_redstone_dust_line0.png^(redstone_redstone_dust_line1.png^[transformR90))^[colorize:#FF0000:"..ratio_on
+		local straight0_off = "redstone_redstone_dust_line0.png^[colorize:#FF0000:"..ratio_off
+		local straight0_on = "redstone_redstone_dust_line0.png^[colorize:#FF0000:"..ratio_on
+		local straight1_off = "redstone_redstone_dust_line0.png^[colorize:#FF0000:"..ratio_off
+		local straight1_on = "redstone_redstone_dust_line0.png^[colorize:#FF0000:"..ratio_on
+		local dot_off = "redstone_redstone_dust_dot.png^[colorize:#FF0000:"..ratio_off
+		local dot_on = "redstone_redstone_dust_dot.png^[colorize:#FF0000:"..ratio_on
+
+		local tiles_off = { crossing_off, crossing_off, straight0_off, straight1_off, straight0_off, straight1_off }
+		local tiles_on = { crossing_on, crossing_on, straight0_on, straight1_on, straight0_on, straight1_on }
+
+		if nodeid == "00000000" then
+			-- Non-connected redstone wire
+			nodebox.fixed = {-8/16, -.5, -8/16, 8/16, -.5+1/64, 8/16}
+			-- “Dot” texture
+			tiles_off = { dot_off, dot_off, "blank.png", "blank.png", "blank.png", "blank.png" }
+			tiles_on = { dot_on, dot_on, "blank.png", "blank.png", "blank.png", "blank.png" }
+		elseif adjx and adjz and (xp + zp + xm + zm > 2) then
+			-- Connected redstone wire (crossing or t-junction)
+			table.insert(nodebox, box_bump1)
+			tiles_off = { crossing_off, crossing_off, straight0_off, straight1_off, straight0_off, straight1_off, }
+			tiles_on = { crossing_on, crossing_on, straight0_on, straight1_on, straight0_on, straight1_on, }
+		else
+			-- Connected redstone wire (straight line or curve)
+			table.insert(nodebox, box_center)
+			tiles_off = { crossing_off, crossing_off, straight0_off, straight1_off, straight0_off, straight1_off, }
+			tiles_on = { crossing_on, crossing_on, straight0_on, straight1_on, straight0_on, straight1_on, }
+		end
+
+		mesecon.register_node(":mesecons:wire_"..nodeid, {
+			description = "Mesecon",
+			drawtype = "nodebox",
+			inventory_image = "redstone_redstone_dust.png",
+			wield_image = "redstone_redstone_dust.png",
+			paramtype = "light",
+			paramtype2 = "facedir",
+			sunlight_propagates = true,
+			selection_box = selectionbox,
+			node_box = nodebox,
+			walkable = false,
+			drop = "mesecons:wire_00000000_off",
+			mesecon_wire = true
+		}, {tiles = tiles_off, mesecons = meseconspec_off, groups = groups_off},
+		{tiles = tiles_on, mesecons = meseconspec_on, groups = groups_on})
+
+		if (nid_inc(nid) == false) then return end
+	end
+end
+register_wires()
+
+minetest.register_alias("mesecons:redstone", "mesecons:wire_00000000_off")
+
+minetest.register_craft({
+	type = "cooking",
+	output = "mesecons:redstone",
+	recipe = "mcl_core:stone_with_redstone",
+	cooktime = 10,
+})
+

mods/ITEMS/mcl_chests/init.lua

@@ -363,18 +363,18 @@ register_chest("trapped_chest",
 		local meta = minetest.get_meta(pos)
 		meta:set_int("players", 1)
 		minetest.swap_node(pos, {name="mcl_chests:trapped_chest_on", param2 = node.param2})
-		mesecon:receptor_on(pos, trapped_chest_mesecons_rules)
+		mesecon.receptor_on(pos, trapped_chest_mesecons_rules)
 	end,
 	function(pos, node, clicker)
 		local meta = minetest.get_meta(pos)
 		meta:set_int("players", 1)
 
 		minetest.swap_node(pos, {name="mcl_chests:trapped_chest_on_left", param2 = node.param2})
-		mesecon:receptor_on(pos, trapped_chest_mesecons_rules)
+		mesecon.receptor_on(pos, trapped_chest_mesecons_rules)
 
 		local pos_other = mcl_util.get_double_container_neighbor_pos(pos, node.param2, "left")
 		minetest.swap_node(pos_other, {name="mcl_chests:trapped_chest_on_right", param2 = node.param2})
-		mesecon:receptor_on(pos_other, trapped_chest_mesecons_rules)
+		mesecon.receptor_on(pos_other, trapped_chest_mesecons_rules)
 	end,
 	function(pos, node, clicker)
 		local pos_other = mcl_util.get_double_container_neighbor_pos(pos, node.param2, "right")
@@ -384,10 +384,10 @@ register_chest("trapped_chest",
 		meta:set_int("players", 1)
 
 		minetest.swap_node(pos, {name="mcl_chests:trapped_chest_on_right", param2 = node.param2})
-		mesecon:receptor_on(pos, trapped_chest_mesecons_rules)
+		mesecon.receptor_on(pos, trapped_chest_mesecons_rules)
 
 		minetest.swap_node(pos_other, {name="mcl_chests:trapped_chest_on_left", param2 = node.param2})
-		mesecon:receptor_on(pos_other, trapped_chest_mesecons_rules)
+		mesecon.receptor_on(pos_other, trapped_chest_mesecons_rules)
 	end
 )
 
@@ -443,7 +443,7 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 				if players <= 0 then
 					meta:set_int("players", 0)
 					minetest.swap_node(pos, {name="mcl_chests:trapped_chest", param2 = node.param2})
-					mesecon:receptor_off(pos, trapped_chest_mesecons_rules)
+					mesecon.receptor_off(pos, trapped_chest_mesecons_rules)
 				else
 					meta:set_int("players", players)
 				end
@@ -451,11 +451,11 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 				if players <= 0 then
 					meta:set_int("players", 0)
 					minetest.swap_node(pos, {name="mcl_chests:trapped_chest_left", param2 = node.param2})
-					mesecon:receptor_off(pos, trapped_chest_mesecons_rules)
+					mesecon.receptor_off(pos, trapped_chest_mesecons_rules)
 
 					pos_other = mcl_util.get_double_container_neighbor_pos(pos, node.param2, "left")
 					minetest.swap_node(pos_other, {name="mcl_chests:trapped_chest_right", param2 = node.param2})
-					mesecon:receptor_off(pos_other, trapped_chest_mesecons_rules)
+					mesecon.receptor_off(pos_other, trapped_chest_mesecons_rules)
 				else
 					meta:set_int("players", players)
 				end
@@ -463,10 +463,10 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 				if players <= 0 then
 					meta:set_int("players", 0)
 					minetest.swap_node(pos, {name="mcl_chests:trapped_chest_right", param2 = node.param2})
-					mesecon:receptor_off(pos, trapped_chest_mesecons_rules)
+					mesecon.receptor_off(pos, trapped_chest_mesecons_rules)
 
 					minetest.swap_node(pos_other, {name="mcl_chests:trapped_chest_left", param2 = node.param2})
-					mesecon:receptor_off(pos_other, trapped_chest_mesecons_rules)
+					mesecon.receptor_off(pos_other, trapped_chest_mesecons_rules)
 				else
 					meta:set_int("players", players)
 				end