mods that hopefully work for a TechAge-based pack

mods/techage_modpack/techage/furnace/heater.lua

@@ -0,0 +1,137 @@
+--[[
+
+	TechAge
+	=======
+
+	Copyright (C) 2019-2020 Joachim Stolberg
+
+	AGPL v3
+	See LICENSE.txt for more information
+
+	TA4 Industrial Furnace Heater
+
+]]--
+
+-- for lazy programmers
+local M = minetest.get_meta
+local S = techage.S
+
+local PWR_NEEDED = 14
+local CYCLE_TIME = 2
+
+local Cable = techage.ElectricCable
+local power = networks.power
+
+local function swap_node(pos, name)
+	local node = techage.get_node_lvm(pos)
+	if node.name == name then
+		return
+	end
+	node.name = name
+	minetest.swap_node(pos, node)
+end
+
+
+local function after_place_node(pos)
+	Cable:after_place_node(pos)
+end
+
+local function after_dig_node(pos, oldnode)
+	Cable:after_dig_node(pos)
+	techage.del_mem(pos)
+end
+
+minetest.register_node("techage:furnace_heater", {
+	description = S("TA4 Furnace Heater"),
+	tiles = {
+		-- up, down, right, left, back, front
+		"techage_concrete.png^techage_appl_open.png^techage_frame_ta3.png",
+		"techage_concrete.png^techage_frame_ta3.png",
+		"techage_concrete.png^techage_frame_ta3.png",
+		"techage_concrete.png^techage_frame_ta3.png^techage_appl_hole_electric.png",
+		"techage_concrete.png^techage_frame_ta3.png",
+		"techage_concrete.png^techage_appl_heater.png^techage_frame_ta3.png",
+	},
+
+	on_timer = function(pos, elapsed)
+		local consumed = power.consume_power(pos, Cable, nil, PWR_NEEDED)
+		if consumed == PWR_NEEDED then
+			swap_node(pos, "techage:furnace_heater_on")
+		end
+		return true
+	end,
+	after_place_node = after_place_node,
+	after_dig_node = after_dig_node,
+
+	paramtype2 = "facedir",
+	groups = {cracky=2, crumbly=2, choppy=2},
+	on_rotate = screwdriver.disallow,
+	is_ground_content = false,
+	sounds = default.node_sound_wood_defaults(),
+})
+
+
+minetest.register_node("techage:furnace_heater_on", {
+	description = S("TA4 Furnace Heater"),
+	tiles = {
+		-- up, down, right, left, back, front
+		"techage_concrete.png^techage_appl_open.png^techage_frame_ta3.png",
+		"techage_concrete.png^techage_frame_ta3.png",
+		"techage_concrete.png^techage_frame_ta3.png",
+		"techage_concrete.png^techage_frame_ta3.png^techage_appl_hole_electric.png",
+		"techage_concrete.png^techage_frame_ta3.png",
+		"techage_concrete.png^techage_appl_heater_on.png^techage_frame_ta3.png",
+	},
+
+	on_timer = function(pos, elapsed)
+		local consumed = power.consume_power(pos, Cable, nil, PWR_NEEDED)
+		if consumed < PWR_NEEDED then
+			swap_node(pos, "techage:furnace_heater")
+		end
+		return true
+	end,
+	after_place_node = after_place_node,
+	after_dig_node = after_dig_node,
+
+	light_source = 8,
+	paramtype2 = "facedir",
+	groups = {not_in_creative_inventory = 1},
+	diggable = false,
+	on_rotate = screwdriver.disallow,
+	is_ground_content = false,
+	sounds = default.node_sound_wood_defaults(),
+})
+
+power.register_nodes({"techage:furnace_heater", "techage:furnace_heater_on"}, Cable, "con", {"B", "F", "L", "D", "U"})
+
+techage.register_node({"techage:furnace_heater", "techage:furnace_heater_on"}, {
+	-- called from furnace_top
+	on_transfer = function(pos, in_dir, topic, payload)
+		local nvm = techage.get_nvm(pos)
+		if topic == "fuel" then
+			return power.power_available(pos, Cable)
+		elseif topic == "running" then
+			return techage.get_node_lvm(pos).name == "techage:furnace_heater_on"
+		elseif topic == "start" and not nvm.running then
+			if power.power_available(pos, Cable) then
+				nvm.running = true
+				minetest.get_node_timer(pos):start(CYCLE_TIME)
+				return true
+			end
+		elseif topic == "stop" and nvm.running then
+			nvm.running = false
+			swap_node(pos, "techage:furnace_heater")
+			minetest.get_node_timer(pos):stop()
+			return true
+		end
+	end
+})
+
+minetest.register_craft({
+	output = "techage:furnace_heater",
+	recipe = {
+		{'techage:aluminum', 'default:steel_ingot', 'techage:aluminum'},
+		{'techage:basalt_stone', 'basic_materials:heating_element', 'techage:basalt_stone'},
+		{'techage:aluminum', 'techage:ta4_furnace_ceramic', 'techage:aluminum'},
+	},
+})