From 8be389e774a99ec5d08ca86b3902bb98310fd58d Mon Sep 17 00:00:00 2001
From: Konstantin Oblaukhov <oblaukhov.konstantin@gmail.com>
Date: Sat, 06 Jul 2013 15:52:41 +0200
Subject: [PATCH] Enriched Uranium.

---
 technic/electric_furnace_mv.lua |  551 ++++++++++++++++++++++++++++--------------------------
 1 files changed, 288 insertions(+), 263 deletions(-)

diff --git a/technic/electric_furnace_mv.lua b/technic/electric_furnace_mv.lua
index fd90b14..7f205b5 100644
--- a/technic/electric_furnace_mv.lua
+++ b/technic/electric_furnace_mv.lua
@@ -1,279 +1,304 @@
-minetest.register_craft({
-	output = 'technic:mv_electric_furnace',
-	recipe = {
-		{'technic:stainless_steel_ingot', 'technic:electric_furnace', 'technic:stainless_steel_ingot'},
-		{'pipeworks:tube_000000', 'technic:mv_transformer', 'pipeworks:tube_000000'},
-		{'technic:stainless_steel_ingot', 'technic:mv_cable', 'technic:stainless_steel_ingot'},
-	}
-})
+-- MV Electric Furnace
+-- This is a faster version of the stone furnace which runs on EUs
+-- In addition to this it can be upgraded with microcontrollers and batteries
+-- This new version uses the batteries to lower the power consumption of the machine
+-- Also in addition this furnace can be attached to the pipe system from the pipeworks mod.
 
+-- FIXME: kpoppel I'd like to introduce an induction heating element here also
+minetest.register_craft(
+   {output = 'technic:mv_electric_furnace',
+    recipe = {
+       {'technic:stainless_steel_ingot', 'technic:electric_furnace', 'technic:stainless_steel_ingot'},
+       {'pipeworks:tube_000000', 'technic:mv_transformer', 'pipeworks:tube_000000'},
+       {'technic:stainless_steel_ingot', 'technic:mv_cable', 'technic:stainless_steel_ingot'},
+    }
+ })
 
-mv_electric_furnace_formspec =
-	"invsize[8,10;]"..
-	"image[1,1;1,2;technic_power_meter_bg.png]"..
-	"list[current_name;src;3,1;1,1;]"..
-	"list[current_name;dst;5,1;2,2;]"..
-	"list[current_player;main;0,6;8,4;]"..
-	"label[0,0;MV Electric Furnace]"..
-	"label[1,2.8;Power level]"..
-	"list[current_name;upgrade1;1,4;1,1;]"..
-	"list[current_name;upgrade2;2,4;1,1;]"..
-	"label[1,5;Upgrade Slots]"
+local mv_electric_furnace_formspec =
+   "invsize[8,10;]"..
+   "list[current_name;src;3,1;1,1;]"..
+   "list[current_name;dst;5,1;2,2;]"..
+   "list[current_player;main;0,6;8,4;]"..
+   "label[0,0;MV Electric Furnace]"..
+   "list[current_name;upgrade1;1,4;1,1;]"..
+   "list[current_name;upgrade2;2,4;1,1;]"..
+   "label[1,5;Upgrade Slots]"
 
-minetest.register_node("technic:mv_electric_furnace", {
-	description = "MV Electric furnace",
-	tiles = {"technic_mv_electric_furnace_top.png", "technic_mv_electric_furnace_bottom.png", "technic_mv_electric_furnace_side_tube.png",
-		"technic_mv_electric_furnace_side_tube.png", "technic_mv_electric_furnace_side.png", "technic_mv_electric_furnace_front.png"},
-	paramtype2 = "facedir",
-	groups = {cracky=2, tubedevice=1,tubedevice_receiver=1,},
-		tube={insert_object=function(pos,node,stack,direction)
-			local meta=minetest.env:get_meta(pos)
-			local inv=meta:get_inventory()
-				return inv:add_item("src",stack)
-		end,
-		can_insert=function(pos,node,stack,direction)
+minetest.register_node(
+   "technic:mv_electric_furnace",
+   {description = "MV Electric furnace",
+    tiles = {"technic_mv_electric_furnace_top.png", "technic_mv_electric_furnace_bottom.png", "technic_mv_electric_furnace_side_tube.png",
+	     "technic_mv_electric_furnace_side_tube.png", "technic_mv_electric_furnace_side.png", "technic_mv_electric_furnace_front.png"},
+    paramtype2 = "facedir",
+    groups = {cracky=2, tubedevice=1,tubedevice_receiver=1,},
+    tube={insert_object=function(pos,node,stack,direction)
+			   local meta=minetest.env:get_meta(pos)
+			   local inv=meta:get_inventory()
+			   return inv:add_item("src",stack)
+			end,
+	  can_insert=function(pos,node,stack,direction)
 			local meta=minetest.env:get_meta(pos)
 			local inv=meta:get_inventory()
 			return inv:room_for_item("src",stack)
-		end,
-		},
-	legacy_facedir_simple = true,
-	sounds = default.node_sound_stone_defaults(),
-	technic_power_machine=1,
-	internal_EU_buffer=0;
-	interal_EU_buffer_size=2000;
-	on_construct = function(pos)
-		local meta = minetest.env:get_meta(pos)
-		meta:set_float("technic_mv_power_machine", 1)
-		meta:set_string("formspec", mv_electric_furnace_formspec)
-		meta:set_string("infotext", "Electric furnace")
-		local inv = meta:get_inventory()
-		inv:set_size("src", 1)
-		inv:set_size("dst", 4)
-		inv:set_size("upgrade1", 1)
-		inv:set_size("upgrade2", 1)
-		local EU_used  = 0
-		local furnace_is_cookin = 0
-		local cooked = nil
-		meta:set_float("internal_EU_buffer",0)
-		meta:set_float("internal_EU_buffer_size",2000)
-		meta:set_float("tube_time", 0)
-	end,
-	can_dig = function(pos,player)
-		local meta = minetest.env:get_meta(pos);
-		local inv = meta:get_inventory()
-		if not inv:is_empty("dst") then
-			return false
-		elseif not inv:is_empty("src") then
-			return false
-		elseif not inv:is_empty("upgrade1") then
-			return false
-		elseif not inv:is_empty("upgrade2") then
-			return false
-		end
-		return true
-	end,
-})
+		     end,
+       },
+    legacy_facedir_simple = true,
+    sounds = default.node_sound_stone_defaults(),
+    on_construct = function(pos)
+		      local meta = minetest.env:get_meta(pos)
+		      meta:set_string("infotext", "MV Electric furnace")
+		      meta:set_float("technic_mv_power_machine", 1)
+		      meta:set_int("tube_time",  0)
+		      meta:set_string("formspec", mv_electric_furnace_formspec)
+		      local inv = meta:get_inventory()
+		      inv:set_size("src", 1)
+		      inv:set_size("dst", 4)
+		      inv:set_size("upgrade1", 1)
+		      inv:set_size("upgrade2", 1)
+		   end,
+    can_dig = function(pos,player)
+		 local meta = minetest.env:get_meta(pos);
+		 local inv = meta:get_inventory()
+		 if not inv:is_empty("src") or not inv:is_empty("dst") or not inv:is_empty("upgrade1") or not inv:is_empty("upgrade2") then
+		    minetest.chat_send_player(player:get_player_name(), "Machine cannot be removed because it is not empty");
+		    return false
+		 else
+		    return true
+		 end
+	      end,
+ })
 
-minetest.register_node("technic:mv_electric_furnace_active", {
-	description = "MV Electric Furnace",
-	tiles = {"technic_mv_electric_furnace_top.png", "technic_mv_electric_furnace_bottom.png", "technic_mv_electric_furnace_side_tube.png",
-		"technic_mv_electric_furnace_side_tube.png", "technic_mv_electric_furnace_side.png", "technic_mv_electric_furnace_front_active.png"},
-	paramtype2 = "facedir",
-	light_source = 8,
-	drop = "technic:mv_electric_furnace",
-	groups = {cracky=2, tubedevice=1,tubedevice_receiver=1,not_in_creative_inventory=1},
-	tube={insert_object=function(pos,node,stack,direction)
-			local meta=minetest.env:get_meta(pos)
-			local inv=meta:get_inventory()
-				return inv:add_item("src",stack)
-		end,
-		can_insert=function(pos,node,stack,direction)
+minetest.register_node(
+   "technic:mv_electric_furnace_active",
+   {description = "MV Electric Furnace",
+    tiles = {"technic_mv_electric_furnace_top.png", "technic_mv_electric_furnace_bottom.png", "technic_mv_electric_furnace_side_tube.png",
+	     "technic_mv_electric_furnace_side_tube.png", "technic_mv_electric_furnace_side.png", "technic_mv_electric_furnace_front_active.png"},
+    paramtype2 = "facedir",
+    light_source = 8,
+    drop = "technic:mv_electric_furnace",
+    groups = {cracky=2, tubedevice=1,tubedevice_receiver=1,not_in_creative_inventory=1},
+    tube={insert_object=function(pos,node,stack,direction)
+			   local meta=minetest.env:get_meta(pos)
+			   local inv=meta:get_inventory()
+			   return inv:add_item("src",stack)
+			end,
+	  can_insert=function(pos,node,stack,direction)
 			local meta=minetest.env:get_meta(pos)
 			local inv=meta:get_inventory()
 			return inv:room_for_item("src",stack)
-		end,
-		},
-	legacy_facedir_simple = true,
-	sounds = default.node_sound_stone_defaults(),
-	internal_EU_buffer=0;
-	interal_EU_buffer_size=2000;
-	technic_power_machine=1,
-	on_construct = function(pos)
-		local meta = minetest.env:get_meta(pos)
-		meta:set_float("technic_mv_power_machine", 1)
-		meta:set_string("formspec", mv_electric_furnace_formspec)
-		meta:set_string("infotext", "Electric furnace");
-		local inv = meta:get_inventory()
-		inv:set_size("src", 1)
-		inv:set_size("dst", 4)
-		inv:set_size("upgrade1", 1)
-		inv:set_size("upgrade2", 1)
-		local EU_used  = 0
-		local furnace_is_cookin = 0
-		local cooked = nil
-	end,
-	can_dig = function(pos,player)
-		local meta = minetest.env:get_meta(pos);
-		local inv = meta:get_inventory()
-		if not inv:is_empty("dst") then
-			return false
-		elseif not inv:is_empty("src") then
-			return false
-		elseif not inv:is_empty("upgrade1") then
-			return false
-		elseif not inv:is_empty("upgrade2") then
-			return false
-		end
-		return true
-	end,
-})
+		     end,
+       },
+    legacy_facedir_simple = true,
+    sounds = default.node_sound_stone_defaults(),
+    can_dig = function(pos,player)
+		 local meta = minetest.env:get_meta(pos);
+		 local inv = meta:get_inventory()
+		 if not inv:is_empty("src") or not inv:is_empty("dst") or not inv:is_empty("upgrade1") or not inv:is_empty("upgrade2") then
+		    minetest.chat_send_player(player:get_player_name(), "Machine cannot be removed because it is not empty");
+		    return false
+		 else
+		    return true
+		 end
+	      end,
+    -- These three makes sure upgrades are not moved in or out while the furnace is active.
+    allow_metadata_inventory_put = function(pos, listname, index, stack, player)
+				       if listname == "src" or listname == "dst" then
+					  return 99
+				       else
+					  return 0 -- Disallow the move
+				       end
+				   end,
+    allow_metadata_inventory_take = function(pos, listname, index, stack, player)
+				       if listname == "src" or listname == "dst" then
+					  return 99
+				       else
+					  return 0 -- Disallow the move
+				       end
+				    end,
+    allow_metadata_inventory_move = function(pos, from_list, to_list, to_list, to_index, count, player)
+				    return 0
+				 end,
+ })
 
-minetest.register_abm({
-	nodenames = {"technic:mv_electric_furnace","technic:mv_electric_furnace_active"},
-	interval = 1,
-	chance = 1,
-
-	action = function(pos, node, active_object_count, active_object_count_wider)
-
-		local pos1={}
-		pos1.x=pos.x
-		pos1.y=pos.y
-		pos1.z=pos.z
-		local x_velocity=0
-		local z_velocity=0
-		
-		-- output is on the left side of the furnace
-		if node.param2==3 then pos1.z=pos1.z-1 z_velocity =-1 end
-		if node.param2==2 then pos1.x=pos1.x-1 x_velocity =-1 end
-		if node.param2==1 then pos1.z=pos1.z+1 z_velocity = 1 end
-		if node.param2==0 then pos1.x=pos1.x+1 x_velocity = 1 end
-		
-		local output_tube_connected = false
-		local meta=minetest.env:get_meta(pos1) 
-		if meta:get_int("tubelike")==1 then output_tube_connected=true end
-		meta = minetest.env:get_meta(pos)
-		local inv = meta:get_inventory()
-		local upg_item1
-		local upg_item1_name=""
-		local upg_item2
-		local upg_item2_name=""
-		local srcstack = inv:get_stack("upgrade1", 1)
-		if srcstack then upg_item1=srcstack:to_table() end
-		srcstack = inv:get_stack("upgrade2", 1)
-		if srcstack then upg_item2=srcstack:to_table() end
-		if upg_item1 then upg_item1_name=upg_item1.name end
-		if upg_item2 then upg_item2_name=upg_item2.name end
-		
-		local speed=0
-		if upg_item1_name=="technic:control_logic_unit" then speed=speed+1 end
-		if upg_item2_name=="technic:control_logic_unit" then speed=speed+1 end
-		tube_time=meta:get_float("tube_time")
-		tube_time=tube_time+speed
-		if tube_time>3 then 
-			tube_time=0
-			if output_tube_connected then send_cooked_items(pos,x_velocity,z_velocity) end
-		end
-		meta:set_float("tube_time", tube_time)
-			
-		local extra_buffer_size = 0
-		if upg_item1_name=="technic:battery" then extra_buffer_size =extra_buffer_size + 10000 end
-		if upg_item2_name=="technic:battery" then extra_buffer_size =extra_buffer_size + 10000 end
-		local internal_EU_buffer_size=2000+extra_buffer_size
-		meta:set_float("internal_EU_buffer_size",internal_EU_buffer_size)
-		
-		internal_EU_buffer=meta:get_float("internal_EU_buffer")
-		if internal_EU_buffer > internal_EU_buffer_size then internal_EU_buffer = internal_EU_buffer_size end
-		local load = math.floor(internal_EU_buffer/(internal_EU_buffer_size) * 100)
-		meta:set_string("formspec",
-				"invsize[8,10;]"..
-				"image[1,1;1,2;technic_power_meter_bg.png^[lowpart:"..
-					(load)..":technic_power_meter_fg.png]"..
-				"list[current_name;src;3,1;1,1;]"..
-				"list[current_name;dst;5,1;2,2;]"..
-				"list[current_player;main;0,6;8,4;]"..
-				"label[0,0;MV Electric Furnace]"..
-				"label[1,2.8;Power level]"..
-				"list[current_name;upgrade1;1,4;1,1;]"..
-				"list[current_name;upgrade2;2,4;1,1;]"..
-				"label[1,5;Upgrade Slots]")
-
-		local furnace_is_cookin = meta:get_float("furnace_is_cookin")
-		
-		
-		local srclist = inv:get_list("src")
-		local cooked=nil 
-
-		if srclist then
-		 cooked = minetest.get_craft_result({method = "cooking", width = 1, items = srclist})
-		end
-		
-		
-		if (furnace_is_cookin == 1) then
-			if internal_EU_buffer>=150 then
-			internal_EU_buffer=internal_EU_buffer-150;
-			meta:set_float("internal_EU_buffer",internal_EU_buffer)
-			meta:set_float("src_time", meta:get_float("src_time") + 3)
-			if cooked and cooked.item and meta:get_float("src_time") >= cooked.time then
-				-- check if there's room for output in "dst" list
-				if inv:room_for_item("dst",cooked.item) then
-					-- Put result in "dst" list
-					inv:add_item("dst", cooked.item)
-					-- take stuff from "src" list
-					srcstack = inv:get_stack("src", 1)
-					srcstack:take_item()
-					inv:set_stack("src", 1, srcstack)
-				else
-					print("Furnace inventory full!")
+local send_cooked_items = function(pos,x_velocity,z_velocity)
+			     -- Send items on their way in the pipe system.
+			     local meta=minetest.env:get_meta(pos) 
+			     local inv = meta:get_inventory()
+			     local i=0
+			     for _,stack in ipairs(inv:get_list("dst")) do
+				i=i+1
+				if stack then
+				   local item0=stack:to_table()
+				if item0 then 
+				   item0["count"]="1"
+				   local item1=tube_item({x=pos.x,y=pos.y,z=pos.z},item0)
+				   item1:get_luaentity().start_pos = {x=pos.x,y=pos.y,z=pos.z}
+				   item1:setvelocity({x=x_velocity, y=0, z=z_velocity})
+				   item1:setacceleration({x=0, y=0, z=0})
+				   stack:take_item(1);
+				   inv:set_stack("dst", i, stack)
+				   return
 				end
-				meta:set_string("src_time", 0)
-			end
-			end		
+			     end
+			  end
+		       end
+
+local smelt_item = function(pos)
+		      local meta=minetest.env:get_meta(pos) 
+		      local inv = meta:get_inventory()
+		      meta:set_int("src_time", meta:get_int("src_time") + 3) -- Cooking time 3x faster
+		      local result = minetest.get_craft_result({method = "cooking", width = 1, items = inv:get_list("src")})
+		      if result and result.item and meta:get_int("src_time") >= result.time then
+			 meta:set_int("src_time", 0)
+			 -- check if there's room for output in "dst" list
+			 if inv:room_for_item("dst",result) then
+			    -- take stuff from "src" list
+			    srcstack = inv:get_stack("src", 1)
+			    srcstack:take_item()
+			    inv:set_stack("src", 1, srcstack)
+			    -- Put result in "dst" list
+			    inv:add_item("dst", result.item)
+			    return 1
+			 else
+			    return 0 -- done
+			 end
+		      end
+		      return 0 -- done
+		   end
+
+minetest.register_abm(
+   {nodenames = {"technic:mv_electric_furnace","technic:mv_electric_furnace_active"},
+    interval = 1,
+    chance   = 1,
+    action = function(pos, node, active_object_count, active_object_count_wider)
+		local meta         = minetest.env:get_meta(pos)
+		local eu_input     = meta:get_int("MV_EU_input")
+		local state        = meta:get_int("state")
+		local next_state   = state
+
+		-- Machine information
+		local machine_name         = "MV Electric Furnace"
+		local machine_node         = "technic:mv_electric_furnace"
+		local machine_state_demand = { 50, 2000, 1500, 1000 }
+			 
+		-- Setup meta data if it does not exist. state is used as an indicator of this
+		if state == 0 then
+		   meta:set_int("state", 1)
+		   meta:set_int("MV_EU_demand", machine_state_demand[1])
+		   meta:set_int("MV_EU_input", 0)
+		   return
 		end
-
-
-
-		if srclist then
-			cooked = minetest.get_craft_result({method = "cooking", width = 1, items = srclist})
-			if cooked.time>0 then 
-			hacky_swap_node(pos,"technic:mv_electric_furnace_active")
-			meta:set_string("infotext","Furnace active")
-			meta:set_string("furnace_is_cookin",1)
-			meta:set_string("src_time", 0)
-			return
-			end
-
+			 
+		-- Power off automatically if no longer connected to a switching station
+		technic.switching_station_timeout_count(pos, "MV")
+		
+		-- Execute always logic
+		-- CODE HERE --
+		
+		-- State machine
+		if eu_input == 0 then
+		   -- Unpowered - go idle
+		   hacky_swap_node(pos, machine_node)
+		   meta:set_string("infotext", machine_name.." Unpowered")
+		   next_state = 1
+		elseif eu_input == machine_state_demand[state] then
+		   -- Powered - do the state specific actions
+			    
+		   -- Execute always if powered logic
+		   local meta=minetest.env:get_meta(pos) 
+			  
+		   -- Get the names of the upgrades
+		   local meta=minetest.env:get_meta(pos) 
+		   local inv = meta:get_inventory()
+		   local upg_item1
+		   local upg_item1_name=""
+		   local upg_item2
+		   local upg_item2_name=""
+		   local srcstack = inv:get_stack("upgrade1", 1)
+		   if  srcstack then upg_item1=srcstack:to_table() end
+		   srcstack = inv:get_stack("upgrade2", 1)
+		   if  srcstack then upg_item2=srcstack:to_table() end
+		   if upg_item1 then upg_item1_name=upg_item1.name end
+		   if upg_item2 then upg_item2_name=upg_item2.name end
+		   
+		   -- Save some power by installing battery upgrades. Fully upgraded makes this
+		   -- furnace use the same amount of power as the LV version
+		   local EU_saving_upgrade = 0
+		   if upg_item1_name=="technic:battery" then EU_saving_upgrade = EU_saving_upgrade + 1 end
+		   if upg_item2_name=="technic:battery" then EU_saving_upgrade = EU_saving_upgrade + 1 end
+		   
+		   -- Tube loading speed can be upgraded using control logic units
+		   local tube_speed_upgrade = 0
+		   if upg_item1_name=="technic:control_logic_unit" then tube_speed_upgrade = tube_speed_upgrade + 1 end
+		   if upg_item2_name=="technic:control_logic_unit" then tube_speed_upgrade = tube_speed_upgrade + 1 end
+		   
+		   -- Handle pipeworks (consumes tube_speed_upgrade)
+		   local pos1={x=pos.x, y=pos.y, z=pos.z}
+		   local x_velocity=0
+		   local z_velocity=0
+		   
+		   -- Output is on the left side of the furnace
+		   if node.param2==3 then pos1.z=pos1.z-1 z_velocity =-1 end
+		   if node.param2==2 then pos1.x=pos1.x-1 x_velocity =-1 end
+		   if node.param2==1 then pos1.z=pos1.z+1 z_velocity = 1 end
+		   if node.param2==0 then pos1.x=pos1.x+1 x_velocity = 1 end
+		   
+		   local output_tube_connected = false
+		   local meta1 = minetest.env:get_meta(pos1) 
+		   if meta1:get_int("tubelike") == 1 then
+		      output_tube_connected=true
+		   end
+		   tube_time = meta:get_int("tube_time")
+		   tube_time = tube_time + tube_speed_upgrade
+		   if tube_time > 3 then
+		      tube_time = 0
+		      if output_tube_connected then
+			 send_cooked_items(pos,x_velocity,z_velocity)
+		      end
+		   end
+		   meta:set_int("tube_time", tube_time)
+		   
+		   -- The machine shuts down if we have nothing to smelt and no tube is connected
+		   -- or if we have nothing to send with a tube connected.
+		   if    (not output_tube_connected and inv:is_empty("src"))
+		   or (    output_tube_connected and inv:is_empty("dst")) then
+		   next_state = 1
 		end
-
-				hacky_swap_node(pos,"technic:mv_electric_furnace")
-				meta:set_string("infotext","Furnace inactive")
-				meta:set_string("furnace_is_cookin",0)
-				meta:set_string("src_time", 0)
-
-end,
-})
-
-function send_cooked_items (pos,x_velocity,z_velocity)
-		local meta=minetest.env:get_meta(pos) 
-		local inv = meta:get_inventory()
-		local i=0
-		for _,stack in ipairs(inv:get_list("dst")) do
-		i=i+1
-			if stack then
-			local item0=stack:to_table()
-			if item0 then 
-				item0["count"]="1"
-				local item1=tube_item({x=pos.x,y=pos.y,z=pos.z},item0)
-				item1:get_luaentity().start_pos = {x=pos.x,y=pos.y,z=pos.z}
-				item1:setvelocity({x=x_velocity, y=0, z=z_velocity})
-				item1:setacceleration({x=0, y=0, z=0})
-				stack:take_item(1);
-				inv:set_stack("dst", i, stack)
-				return
-				end
-			end
+		----------------------
+		
+		if state == 1 then
+		   hacky_swap_node(pos, machine_node)
+		   meta:set_string("infotext", machine_name.." Idle")
+		   
+		   local meta=minetest.env:get_meta(pos) 
+		   local inv = meta:get_inventory()
+		   if not inv:is_empty("src") then
+		      local result = minetest.get_craft_result({method = "cooking", width = 1, items = inv:get_list("src")})
+		      if result then
+			 meta:set_string("infotext", machine_name.." Active")
+			 meta:set_int("src_time",     0)
+			 next_state = 2+EU_saving_upgrade -- Next state is decided by the battery upgrade (state 2= 0 batteries, state 3 = 1 battery, 4 = 2 batteries)
+		      end
+		   else
+		      meta:set_string("infotext", "Electric Furnace Idle")
+		   end
+		   
+		elseif state == 2 or state == 3 or state == 4 then
+		   hacky_swap_node(pos, machine_node.."_active")
+		   meta:set_string("infotext", machine_name.." Active")
+		   result = smelt_item(pos, data)
+		   if result == 0 then
+		      next_state = 1
+		   end
 		end
-end
+	     end
+	     -- Change state?
+	     if next_state ~= state then
+		meta:set_int("MV_EU_demand", machine_state_demand[next_state])
+		meta:set_int("state", next_state)
+	     end
+	  end,
+ })
 
-register_MV_machine ("technic:mv_electric_furnace","RE")
-register_MV_machine ("technic:mv_electric_furnace_active","RE")
+technic.register_MV_machine ("technic:mv_electric_furnace","RE")
+technic.register_MV_machine ("technic:mv_electric_furnace_active","RE")

--
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