Mesecons and toggleable machines!

elepower_farming/nodes/harvester.lua

@@ -79,11 +79,12 @@ local function harvest(pos, harvested, fdir)
 	return harvested
 end
 
-local function get_formspec(timer, power, sludge)
+local function get_formspec(timer, power, sludge, state)
 	return "size[8,8.5]"..
 		default.gui_bg..
 		default.gui_bg_img..
 		default.gui_slots..
+		ele.formspec.state_switcher(7, 2.5, state)..
 		ele.formspec.power_meter(power)..
 		ele.formspec.fluid_bar(7, 0, sludge)..
 		ele.formspec.create_bar(1, 0, 100 - timer, "#00ff11", true)..
@@ -108,7 +109,11 @@ local function on_timer(pos, elapsed)
 	local work   = meta:get_int("src_time")
 	local sludge = fluid_lib.get_buffer_data(pos, "sludge")
 
-	if storage > usage and sludge.amount + SLUDGE_PRODUCED < sludge.capacity then
+	local state = meta:get_int("state")
+	local is_enabled = ele.helpers.state_enabled(meta, pos, state)
+	local active = "Idle"
+
+	if storage > usage and sludge.amount + SLUDGE_PRODUCED < sludge.capacity and is_enabled then
 		if work == HARVESTER_TICK then
 			local harvested = {}
 
@@ -129,16 +134,24 @@ local function on_timer(pos, elapsed)
 			work = work + 1
 		end
 
+		active = "Active"
 		refresh = true
 		ele.helpers.swap_node(pos, "elepower_farming:harvester_active")
 	else
+		if not is_enabled then
+			active = "Off"
+		end
+
 		ele.helpers.swap_node(pos, "elepower_farming:harvester")
 	end
 
 	local power = {capacity = capacity, storage = storage, usage = usage}
 	local work_percent  = math.floor((work / HARVESTER_TICK)*100)
 
-	meta:set_string("formspec", get_formspec(work_percent, power, sludge))
+	meta:set_string("formspec", get_formspec(work_percent, power, sludge, state))
+	meta:set_string("infotext", ("Harvester %s\n%s"):format(active,
+		ele.capacity_text(capacity, storage)))
+
 	meta:set_int("storage", storage)
 	meta:set_int("src_time", work)
 

elepower_farming/nodes/planter.lua

@@ -51,12 +51,13 @@ local ranges = {
 	},
 }
 
-local function get_formspec(timer, power)
+local function get_formspec(timer, power, state)
 	return "size[8,10]"..
 		default.gui_bg..
 		default.gui_bg_img..
 		default.gui_slots..
 		ele.formspec.power_meter(power)..
+		ele.formspec.state_switcher(7, 0, state)..
 		ele.formspec.create_bar(1, 0, 100 - timer, "#00ff11", true)..
 		"list[context;layout;2.5,0;3,3;]"..
 		"list[context;src;0,3.5;8,2;]"..
@@ -231,7 +232,11 @@ local function on_timer(pos, elapsed)
 
 	local work = meta:get_int("src_time")
 
-	if storage > usage then
+	local state = meta:get_int("state")
+	local is_enabled = ele.helpers.state_enabled(meta, pos, state)
+	local active = "Idle"
+
+	if storage > usage and is_enabled then
 		if work == PLANTER_TICK then
 			local planted = 0
 			for index, slot in ipairs(inv:get_list("layout")) do
@@ -249,13 +254,19 @@ local function on_timer(pos, elapsed)
 			work = work + 1
 		end
 
+		active = "Active"
 		refresh = true
+	elseif not is_enabled then
+		active = "Off"
 	end
 
 	local power = {capacity = capacity, storage = storage, usage = usage}
 	local work_percent  = math.floor((work / PLANTER_TICK)*100)
 
-	meta:set_string("formspec", get_formspec(work_percent, power))
+	meta:set_string("formspec", get_formspec(work_percent, power, state))
+	meta:set_string("infotext", ("Planter %s\n%s"):format(active,
+		ele.capacity_text(capacity, storage)))
+
 	meta:set_int("storage", storage)
 	meta:set_int("src_time", work)
 

elepower_farming/nodes/spawner.lua

@@ -89,12 +89,13 @@ local function spawn(pos, mob)
 	return
 end
 
-local function get_formspec(timer, power)
+local function get_formspec(timer, power, state)
 	return "size[8,8.5]"..
 		default.gui_bg..
 		default.gui_bg_img..
 		default.gui_slots..
 		ele.formspec.power_meter(power)..
+		ele.formspec.state_switcher(7, 0, state)..
 		ele.formspec.create_bar(1, 0, 100 - timer, "#00ff11", true)..
 		"list[context;src;3.5,1.5;1,1;]"..
 		"image[3.5,1.5;1,1;elefarming_egg_silhouette.png]"..
@@ -117,11 +118,15 @@ local function on_timer(pos, elapsed)
 
 	local work = meta:get_int("src_time")
 
+	local state = meta:get_int("state")
+	local is_enabled = ele.helpers.state_enabled(meta, pos, state)
+
 	local egg_slot = inv:get_stack("src", 1)
 	local egg_name = egg_slot:get_name()
 	local mob_desc = "None"
 	local active   = "Active"
-	if storage > usage and not egg_slot:is_empty() and ele.helpers.get_item_group(egg_name, "spawn_egg") then
+
+	if storage > usage and not egg_slot:is_empty() and ele.helpers.get_item_group(egg_name, "spawn_egg") and is_enabled then
 		local mob_name = egg_name:gsub("_set", "")
 
 		if work == SPAWNER_TICK then
@@ -142,6 +147,8 @@ local function on_timer(pos, elapsed)
 
 		refresh = true
 		mob_desc = minetest.registered_items[mob_name].description
+	elseif not is_enabled then
+		active = "Off"
 	else
 		work = 0
 		active = "Inactive"
@@ -153,7 +160,7 @@ local function on_timer(pos, elapsed)
 	local power = {capacity = capacity, storage = storage, usage = usage}
 	local work_percent  = math.floor((work / SPAWNER_TICK)*100)
 
-	meta:set_string("formspec", get_formspec(work_percent, power))
+	meta:set_string("formspec", get_formspec(work_percent, power, state))
 	meta:set_int("storage", storage)
 	meta:set_int("src_time", work)
 

elepower_machines/machines/bases/crafter.lua

@@ -2,7 +2,7 @@
 -- It accepts a recipe type registered beforehand.
 
 -- Specialized formspec for crafters
-function ele.formspec.get_crafter_formspec(craft_type, power, percent)
+function ele.formspec.get_crafter_formspec(craft_type, power, percent, pos, state)
 	local craftstats  = elepm.craft.types[craft_type]
 	local input_size  = craftstats.inputs
 
@@ -45,6 +45,7 @@ function ele.formspec.get_crafter_formspec(craft_type, power, percent)
 		default.gui_bg_img..
 		default.gui_slots..
 		ele.formspec.power_meter(power)..
+		ele.formspec.state_switcher(7, 0, state)..
 		"list[context;src;"..x..","..y..";"..in_width..","..in_height..";]"..
 		bar..
 		"list[context;dst;5,1;2,2;]"..
@@ -92,11 +93,21 @@ function elepm.register_crafter(nodename, nodedef)
 		local usage    = ele.helpers.get_node_property(meta, pos, "usage")
 		local storage  = ele.helpers.get_node_property(meta, pos, "storage")
 		local time     = meta:get_int("src_time")
+		local state    = meta:get_int("state")
+		local status   = "Idle"
+
+		local is_enabled = ele.helpers.state_enabled(meta, pos, state)
 		local res_time = 0
 
 		local pow_buffer = {capacity = capacity, storage = storage, usage = 0}
 
 		while true do
+			if not is_enabled then
+				time = 0
+				status = "Off"
+				break
+			end
+
 			local result  = elepm.get_recipe(craft_type, inv:get_list("src"))
 			local power_operation = false
 
@@ -112,24 +123,22 @@ function elepm.register_crafter(nodename, nodedef)
 				
 				if result.time == 0 then
 					time = 0
-					meta:set_string("infotext", ("%s Idle"):format(nodedef.description) ..
+					status = "Idle"
-						"\n" .. ele.capacity_text(capacity, storage))
 				else
-					meta:set_string("infotext", ("%s Out of Power!"):format(nodedef.description) ..
+					status = "Out of Power!"
-						"\n" .. ele.capacity_text(capacity, storage))
 				end
 
 				break
 			end
 
 			refresh = true
+			status = "Active"
 
 			-- One step
-			meta:set_int("storage", storage - usage)
+			storage = storage - usage
+			meta:set_int("storage", storage)
 			pow_buffer = {capacity = capacity, storage = storage, usage = usage}
 			time = time + ele.helpers.round(machine_speed * 10)
-			meta:set_string("infotext", ("%s Active"):format(nodedef.description) ..
-				"\n" .. ele.capacity_text(capacity, storage))
 
 			if nodedef.ele_active_node then
 				local active_node = nodename.."_active"
@@ -166,8 +175,7 @@ function elepm.register_crafter(nodename, nodedef)
 			if not room_for_output then
 				ele.helpers.swap_node(pos, machine_node)
 				time = ele.helpers.round(res_time*10)
-				meta:set_string("infotext", ("%s Output Full!"):format(nodedef.description) ..
+				status = "Output Full!"
-					"\n" .. ele.capacity_text(capacity, storage))
 				break
 			end
 
@@ -182,7 +190,9 @@ function elepm.register_crafter(nodename, nodedef)
 			pct = math.floor((time / ele.helpers.round(res_time * 10)) * 100)
 		end
 
-		meta:set_string("formspec", get_formspec(craft_type, pow_buffer, pct, pos))
+		meta:set_string("formspec", get_formspec(craft_type, pow_buffer, pct, pos, state))
+		meta:set_string("infotext", ("%s %s"):format(nodedef.description, status) ..
+			"\n" .. ele.capacity_text(capacity, storage))
 		meta:set_int("src_time", time)
 
 		return refresh

elepower_machines/machines/bases/fluidgenerator.lua

@@ -1,10 +1,11 @@
 
-local function get_formspec_default(power, percent, buffer)
+local function get_formspec_default(power, percent, buffer, state)
 	return "size[8,8.5]"..
 		default.gui_bg..
 		default.gui_bg_img..
 		default.gui_slots..
 		ele.formspec.power_meter(power)..
+		ele.formspec.state_switcher(7, 2.5, state)..
 		ele.formspec.fluid_bar(7, 0, buffer)..
 		"image[3.5,1.5;1,1;default_furnace_fire_bg.png^[lowpart:"..
 		(percent)..":default_furnace_fire_fg.png]"..
@@ -58,12 +59,21 @@ function ele.register_fluid_generator(nodename, nodedef)
 			local generation = ele.helpers.get_node_property(meta, pos, "usage")
 			local storage    = ele.helpers.get_node_property(meta, pos, "storage")
 
+			local state = meta:get_int("state")
+			local is_enabled = ele.helpers.state_enabled(meta, pos, state)
+
 			-- Fluid buffer
 			local flbuffer = fluid_lib.get_buffer_data(pos, buffer_name)
-			local pow_buffer
+			local pow_buffer = {capacity = capacity, storage = storage, usage = 0}
-			if not flbuffer or flbuffer.fluid == "" then return false end
+			local status = "Idle"
 
 			while true do
+				if not flbuffer or flbuffer.fluid == "" then break end
+				if not is_enabled then
+					status = "Off"
+					break
+				end
+
 				-- If more to burn and the energy produced was used: produce some more
 				if burn_time > 0 then
 					if storage + generation > capacity then
@@ -77,7 +87,7 @@ function ele.register_fluid_generator(nodename, nodedef)
 					meta:set_int("burn_time", burn_time)
 				end
 
-				pow_buffer = {capacity = capacity, storage = storage, usage = 0}
+				status = "Active"
 
 				-- Burn another bucket of lava
 				if burn_time == 0 then
@@ -95,10 +105,7 @@ function ele.register_fluid_generator(nodename, nodedef)
 
 						refresh = true
 					else
-						meta:set_string("formspec", get_formspec(pow_buffer, 0, flbuffer))
+						status = "Idle"
-						meta:set_string("infotext", ("%s Idle\n%s\n%s"):format(nodedef.description,
-							ele.capacity_text(capacity, storage), fluid_lib.buffer_to_string(flbuffer)))
-
 						ele.helpers.swap_node(pos, nodename)
 					end
 				end
@@ -107,8 +114,8 @@ function ele.register_fluid_generator(nodename, nodedef)
 			end
 
 			local percent = math.floor((burn_time / burn_totaltime) * 100)
-			meta:set_string("formspec", get_formspec(pow_buffer, percent, flbuffer))
+			meta:set_string("formspec", get_formspec(pow_buffer, percent, flbuffer, state))
-			meta:set_string("infotext", ("%s Active\n%s\n%s"):format(nodedef.description,
+			meta:set_string("infotext", ("%s %s\n%s\n%s"):format(nodedef.description, status,
 				ele.capacity_text(capacity, storage), fluid_lib.buffer_to_string(flbuffer)))
 
 			meta:set_int(buffer_name .. "_fluid_storage", flbuffer.amount)

elepower_machines/machines/bases/generator.lua

@@ -1,10 +1,11 @@
 
-local function get_formspec_default(power, percent)
+local function get_formspec_default(power, percent, state)
 	return "size[8,8.5]"..
 		default.gui_bg..
 		default.gui_bg_img..
 		default.gui_slots..
 		ele.formspec.power_meter(power)..
+		ele.formspec.state_switcher(7, 0, state)..
 		"list[context;src;3,1.5;1,1;]"..
 		"image[4,1.5;1,1;default_furnace_fire_bg.png^[lowpart:"..
 		percent..":default_furnace_fire_fg.png]"..
@@ -44,6 +45,18 @@ function elepm.register_fuel_generator(nodename, nodedef)
 		local generation = ele.helpers.get_node_property(meta, pos, "usage")
 		local storage    = ele.helpers.get_node_property(meta, pos, "storage")
 
+		local state = meta:get_int("state")
+		local is_enabled = ele.helpers.state_enabled(meta, pos, state)
+		local status = "Idle"
+
+		local pow_buffer = {capacity = capacity, storage = storage, usage = 0}
+
+		while true do
+			if not is_enabled then
+				status = "Off"
+				break
+			end
+
 			-- If more to burn and the energy produced was used: produce some more
 			if burn_time > 0 then
 				if storage + generation > capacity then
@@ -51,15 +64,15 @@ function elepm.register_fuel_generator(nodename, nodedef)
 				end
 
 				storage = storage + generation
+				pow_buffer.storage = storage
 				meta:set_int("storage", storage)
 
 				burn_time = burn_time - 1
 				meta:set_int("burn_time", burn_time)
 			end
 
-		local pow_buffer = {capacity = capacity, storage = storage, usage = 0}
+			status = "Active"
 
-		while true do
 			-- Burn another piece of fuel
 			if burn_time == 0 then
 				local inv = meta:get_inventory()
@@ -88,9 +101,7 @@ function elepm.register_fuel_generator(nodename, nodedef)
 
 					refresh = true
 				else
-					meta:set_string("formspec", get_formspec(pow_buffer, 0))
+					status = "Idle"
-					meta:set_string("infotext", ("%s Idle"):format(nodedef.description) ..
-						"\n" .. ele.capacity_text(capacity, storage))
 					ele.helpers.swap_node(pos, nodename)
 				end
 			end
@@ -99,8 +110,8 @@ function elepm.register_fuel_generator(nodename, nodedef)
 		end
 
 		local percent = math.floor((burn_time / burn_totaltime) * 100)
-		meta:set_string("formspec", get_formspec(pow_buffer, percent))
+		meta:set_string("formspec", get_formspec(pow_buffer, percent, state))
-		meta:set_string("infotext", ("%s Active"):format(nodedef.description) ..
+		meta:set_string("infotext", ("%s %s"):format(nodedef.description, status) ..
 			"\n" .. ele.capacity_text(capacity, storage))
 
 		return refresh

elepower_machines/machines/bucketer.lua

@@ -1,5 +1,5 @@
 
-local function get_formspec(mode, buffer)
+local function get_formspec(mode, buffer, state)
 	if not mode then
 		mode = 0
 	end
@@ -13,6 +13,7 @@ local function get_formspec(mode, buffer)
 		default.gui_bg..
 		default.gui_bg_img..
 		default.gui_slots..
+		ele.formspec.state_switcher(0, 0, state)..
 		ele.formspec.fluid_bar(7, 0.75, buffer)..
 		"list[context;src;3.5,1;1,1;]"..
 		"list[context;dst;3.5,2;1,1;]"..
@@ -35,9 +36,14 @@ local function on_timer(pos, elapsed)
 
 	local buffer = fluid_lib.get_buffer_data(pos, "input")
 	local mode   = meta:get_int("mode")
+	local state  = meta:get_int("state")
+
+	local is_enabled = ele.helpers.state_enabled(meta, pos, state)
 
 	local bucket_slot = inv:get_stack("src", 1)
 	local bucket_name = bucket_slot:get_name()
+
+	if is_enabled then
 		if mode == 0 and bucket_name == "bucket:bucket_empty" and buffer.amount >= 1000 then
 			-- Fill bucket
 			local bitem = bucket.liquids[buffer.fluid]
@@ -70,6 +76,7 @@ local function on_timer(pos, elapsed)
 				end
 			end
 		end
+	end
 
 	if buffer.amount <= 0 then
 		buffer.amount = 0
@@ -114,6 +121,7 @@ ele.register_base_device("elepower_machines:bucketer", {
 			accepts   = true,
 		},
 	},
+	paramtype2 = "facedir",
 	on_timer = on_timer,
 	on_construct = function (pos)
 		local meta = minetest.get_meta(pos)

elepower_machines/machines/lava_cooler.lua

@@ -16,7 +16,7 @@ local cooler_recipes = {
 	},
 }
 
-local function get_formspec(item_percent, coolant_buffer, hot_buffer, power, recipes, recipe)
+local function get_formspec(item_percent, coolant_buffer, hot_buffer, power, recipes, recipe, state)
 	local rclist = {}
 
 	local x = 2.5
@@ -34,6 +34,7 @@ local function get_formspec(item_percent, coolant_buffer, hot_buffer, power, rec
 		default.gui_bg_img..
 		default.gui_slots..
 		ele.formspec.power_meter(power)..
+		ele.formspec.state_switcher(3.5, 2.5, state)..
 		ele.formspec.fluid_bar(1, 0, coolant_buffer)..
 		ele.formspec.fluid_bar(7, 0, hot_buffer)..
 		"list[context;dst;3.5,1.5;1,1;]"..
@@ -50,7 +51,6 @@ local function get_formspec(item_percent, coolant_buffer, hot_buffer, power, rec
 		default.get_hotbar_bg(0, 4.25)
 end
 
-
 local function lava_cooler_timer(pos, elapsed)
 	local refresh = false
 
@@ -69,7 +69,10 @@ local function lava_cooler_timer(pos, elapsed)
 	local time    = meta:get_int("src_time")
 	local active  = "Active"
 
-	if storage > usage then
+	local state = meta:get_int("state")
+	local is_enabled = ele.helpers.state_enabled(meta, pos, state)
+
+	if storage > usage and is_enabled then
 		if coolant_buffer.amount >= 1000 and hot_buffer.amount >= 1000 then
 			if time >= TIME then
 				local room_for_output = true
@@ -101,6 +104,8 @@ local function lava_cooler_timer(pos, elapsed)
 			active = "Idle"
 			refresh = false
 		end
+	elseif not is_enabled then
+		active = "Off"
 	else
 		active = "Idle"
 	end
@@ -113,7 +118,7 @@ local function lava_cooler_timer(pos, elapsed)
 	meta:set_string("infotext", ("Lava Cooler %s\n%s"):format(active, ele.capacity_text(capacity, storage)))
 
 	meta:set_string("formspec", get_formspec(timer, coolant_buffer, hot_buffer, 
-		power, cooler_recipes, recipe))
+		power, cooler_recipes, recipe, state))
 
 	return refresh
 end
@@ -142,7 +147,7 @@ ele.register_machine("elepower_machines:lava_cooler", {
 		inv:set_size("dst", 1)
 
 		meta:set_string("recipe", "default:cobble")
-		meta:set_string("formspec", get_formspec(0,nil,nil,0,cooler_recipes, "default:cobble"))
+		meta:set_string("formspec", get_formspec(0,nil,nil,nil,cooler_recipes, "default:cobble"))
 	end,
 	on_timer = lava_cooler_timer,
 	on_receive_fields = function (pos, formname, fields, sender)

elepower_machines/machines/steam_turbine.lua

@@ -1,10 +1,11 @@
 
-local function get_formspec(power, percent, buffer)
+local function get_formspec(power, percent, buffer, state)
 	return "size[8,8.5]"..
 		default.gui_bg..
 		default.gui_bg_img..
 		default.gui_slots..
 		ele.formspec.power_meter(power)..
+		ele.formspec.state_switcher(3.5, 1.5, state)..
 		ele.formspec.fluid_bar(7, 0, buffer)..
 		"list[current_player;main;0,4.25;8,1;]"..
 		"list[current_player;main;0,5.5;8,3;8]"..

elepower_papi/formspec.lua

@@ -1,6 +1,28 @@
 -- Formspec helpers
 
 ele.formspec = {}
+ele.formspec.gui_switcher_icons = {
+	[0] = "elepower_gui_check.png",
+	"elepower_gui_cancel.png",
+	"mesecons_wire_on.png",
+	"mesecons_wire_off.png",
+}
+
+function ele.formspec.state_switcher(x, y, state)
+	if not state then state = 0 end
+	local icon = ele.formspec.gui_switcher_icons[state]
+	local statedesc = ele.default.states[state]
+
+	if statedesc then
+		statedesc = statedesc.d
+	else
+		statedesc = ""
+	end
+	statedesc = statedesc .. "\nPress to toggle"
+
+	return "image_button["..x..","..y..";1,1;"..icon..";cyclestate;]"..
+		"tooltip[cyclestate;"..statedesc.."]"
+end
 
 function ele.formspec.create_bar(x, y, metric, color, small)
 	if not metric or type(metric) ~= "number" or metric < 0 then metric = 0 end

elepower_papi/helpers.lua

@@ -103,3 +103,23 @@ function ele.helpers.comma_value(n) -- credit http://richard.warburton.it
 	local left,num,right = string.match(n,'^([^%d]*%d)(%d*)(.-)$')
 	return left..(num:reverse():gsub('(%d%d%d)','%1,'):reverse())..right
 end
+
+function ele.helpers.state_enabled(meta, pos, state)
+	if not state then
+		state = meta:get_int("state")
+	end
+
+	if state == 0 then
+		return true
+	elseif state == 1 then
+		return false
+	end
+
+	if state == 2 and meta:get_int("signal_interrupt") == 1 then
+		return true
+	elseif state == 3 and meta:get_int("signal_interrupt") == 0 then
+		return true
+	end
+
+	return false
+end

elepower_papi/machine.lua

@@ -2,6 +2,7 @@
 -- Machine definitions
 
 local pw = minetest.get_modpath("pipeworks") ~= nil
+local mc = minetest.get_modpath("mesecons") ~= nil
 local tl = minetest.get_modpath("tubelib") ~= nil
 
 --[[
@@ -84,6 +85,14 @@ function ele.default.metadata_inventory_changed(pos)
 	end
 end
 
+-- State machine descriptions
+ele.default.states = {
+	[0] = {s = "on", d = "Always on", e = "toggle"},
+	{s = "off", d = "Always off", e = "toggle"},
+	{s = "signal", d = "Enable by Mesecons signal", e = "mesecons"},
+	{s = "interrupt", d = "Disable by Mesecons signal", e = "mesecons"},
+}
+
 -- Preserve power storage in the item stack dropped
 local function preserve_metadata(pos, oldnode, oldmeta, drops)
 	local meta     = minetest.get_meta(pos)
@@ -125,6 +134,7 @@ function ele.capacity_text(capacity, storage)
 		ele.helpers.comma_value(capacity), ele.unit)
 end
 
+-- API support
 local tube = {
 	insert_object = function(pos, node, stack, direction)
 		local meta = minetest.get_meta(pos)
@@ -163,6 +173,55 @@ local tubelib_tube = {
 	end,
 }
 
+local mesecons_def = {}
+if mc then
+	mesecons_def = {
+		effector = {
+			action_on = function (pos, node)
+				local meta = minetest.get_meta(pos)
+				meta:set_int("signal_interrupt", 1)
+			end,
+			action_off = function (pos, node)
+				local meta = minetest.get_meta(pos)
+				meta:set_int("signal_interrupt", 0)
+			end,
+			action_change = function (pos, node)
+				local t = minetest.get_node_timer(pos)
+				if not t:is_started() then
+					t:start(1.0)
+				end
+			end,
+		}
+	}
+end
+
+-- Functions
+
+local function switch_state(pos, state_def)
+	local meta  = minetest.get_meta(pos)
+	local state = meta:get_int("state")
+	local states = {}
+	for id,state in pairs(ele.default.states) do
+		if state_def[state.e] then
+			states[#states + 1] = id
+		end
+	end
+
+	if #states == 0 then return end
+
+	state = state + 1
+	if state >= #states then
+		state = 0
+	end
+	state = states[state + 1]
+	meta:set_int("state", state)
+
+	local t = minetest.get_node_timer(pos)
+	if not t:is_started() then
+		t:start(1.0)
+	end
+end
+
 -- Register a base device
 function ele.register_base_device(nodename, nodedef)
 	local tlsupp = tl and nodedef.groups and (nodedef.groups["tubedevice"] or nodedef.groups["tube"])
@@ -228,12 +287,16 @@ function ele.register_base_device(nodename, nodedef)
 		end
 	end
 
-
 	-- Prevent digging when there's items inside
 	if not nodedef.can_dig then
 		nodedef.can_dig = can_dig
 	end
 
+	-- Explicitly allow the disabling of the state machine
+	if nodedef.groups["state_machine"] ~= 0 and not nodedef["states"] then
+		nodedef.states = {toggle = true}
+	end
+
 	-- Pipeworks support
 	if pw and nodedef.groups and (nodedef.groups["tubedevice"] or nodedef.groups["tube"]) then
 		if nodedef['tube'] == false then
@@ -251,6 +314,32 @@ function ele.register_base_device(nodename, nodedef)
 		end
 	end
 
+	-- Mesecons support
+	if mc then
+		nodedef["mesecons"] = mesecons_def
+		if nodedef.groups["state_machine"] ~= 1 then
+			nodedef.states["mesecons"] = true
+		end
+	end
+
+	-- STATE MACHINE
+	local original_on_receive_fields = nodedef.on_receive_fields
+	nodedef.on_receive_fields = function (pos, formname, fields, sender)
+		if sender and sender ~= "" and minetest.is_protected(pos, sender:get_player_name()) then
+			return
+		end
+
+		if nodedef.states then
+			if fields["cyclestate"] then
+				switch_state(pos, nodedef.states)
+			end
+		end
+
+		if original_on_receive_fields then
+			return original_on_receive_fields(pos, formname, fields, sender)
+		end
+	end
+
 	-- Finally, register the damn thing already
 	minetest.register_node(nodename, nodedef)
 	local active_name = nil

elepower_papi/mod.conf

@@ -1,3 +1,3 @@
 name = elepower_papi
 description = Elepower Power Network API
-optional_depends = default,pipeworks,tubelib
+optional_depends = default,pipeworks,tubelib,mesecons