game/technic.git

New file
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			-- LV Electric Furnace
			-- This is a faster version of the stone furnace which runs on EUs

			-- FIXME: kpoppel I'd like to introduce an induction heating element here also
			minetest.register_craft(
			{output = 'technic:electric_furnace',
			recipe = {
			{'default:cobble', 'default:cobble', 'default:cobble'},
			{'default:cobble', '', 'default:cobble'},
			{'default:steel_ingot', 'moreores:copper_ingot', 'default:steel_ingot'},
			}
			})

			local electric_furnace_formspec =
			"invsize[8,9;]"..
			"list[current_name;src;3,1;1,1;]"..
			"list[current_name;dst;5,1;2,2;]"..
			"list[current_player;main;0,5;8,4;]"..
			"label[0,0;Electric Furnace]"..
			"label[1,3;Power level]"

			minetest.register_node(
			"technic:electric_furnace",
			{description = "Electric furnace",
			tiles = {"technic_electric_furnace_top.png", "technic_electric_furnace_bottom.png", "technic_electric_furnace_side.png",
			"technic_electric_furnace_side.png", "technic_electric_furnace_side.png", "technic_electric_furnace_front.png"},
			paramtype2 = "facedir",
			groups = {cracky=2},
			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", "Electric Furnace")
			meta:set_float("technic_power_machine", 1)
			meta:set_string("formspec", electric_furnace_formspec)
			local inv = meta:get_inventory()
			inv:set_size("src", 1)
			inv:set_size("dst", 4)
			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") 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:electric_furnace_active",
			{description = "Electric Furnace",
			tiles = {"technic_electric_furnace_top.png", "technic_electric_furnace_bottom.png", "technic_electric_furnace_side.png",
			"technic_electric_furnace_side.png", "technic_electric_furnace_side.png", "technic_electric_furnace_front_active.png"},
			paramtype2 = "facedir",
			light_source = 8,
			drop = "technic:electric_furnace",
			groups = {cracky=2, not_in_creative_inventory=1},
			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") 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_abm(
			{ nodenames = {"technic:electric_furnace","technic: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("LV_EU_input")
			local state = meta:get_int("state")
			local next_state = state

			-- Machine information
			local machine_name = "Electric furnace"
			local machine_node = "technic:electric_furnace"
			local machine_state_demand = { 50, 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("LV_EU_demand", machine_state_demand[1])
			meta:set_int("LV_EU_input", 0)
			return
			end

			-- Power off automatically if no longer connected to a switching station
			technic.switching_station_timeout_count(pos, "LV")

			-- 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 inv = meta:get_inventory()
			local empty = inv:is_empty("src")

			if state == 1 then
			hacky_swap_node(pos, machine_node)
			meta:set_string("infotext", machine_name.." Idle")

			local result = minetest.get_craft_result({method = "cooking", width = 1, items = inv:get_list("src")})
			if not empty and result and inv:room_for_item("dst",result) then
			next_state = 2
			end

			elseif state == 2 then
			hacky_swap_node(pos, machine_node.."_active")
			meta:set_string("infotext", machine_name.." Active")

			if empty then
			next_state = 1
			else
			meta:set_int("src_time", meta:get_int("src_time") + 3) -- Cooking time 3x
			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
			-- check if there's room for output in "dst" list
			meta:set_int("src_time", 0)
			if inv:room_for_item("dst",result.item) 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)
			else
			-- all full: go idle
			next_state = 1
			end
			end
			end
			end
			end
			-- Change state?
			if next_state ~= state then
			meta:set_int("LV_EU_demand", machine_state_demand[next_state])
			meta:set_int("state", next_state)
			end
			end,
			})

			technic.register_LV_machine ("technic:electric_furnace","RE")
			technic.register_LV_machine ("technic:electric_furnace_active","RE")