mods that hopefully work for a TechAge-based pack

mods/techage_modpack/techage/steam_engine/boiler.lua

@@ -0,0 +1,140 @@
+--[[
+
+	TechAge
+	=======
+
+	Copyright (C) 2019-2021 Joachim Stolberg
+
+	AGPL v3
+	See LICENSE.txt for more information
+
+	TA2 Steam Engine Boiler
+
+]]--
+
+-- for lazy programmers
+local M = minetest.get_meta
+local S = techage.S
+
+local CYCLE_TIME = 4
+local WATER_CONSUMPTION = 0.5
+
+local Pipe = techage.SteamPipe
+local boiler = techage.boiler
+
+local function steaming(pos, nvm, temp)
+	if temp >= 80 then
+		local wc = WATER_CONSUMPTION * (nvm.power_ratio or 1)
+		nvm.water_level = math.max((nvm.water_level or 0) - wc, 0)
+	end
+end
+
+local function node_timer(pos, elapsed)
+	local nvm = techage.get_nvm(pos)
+	local temp = boiler.water_temperature(pos, nvm)
+	steaming(pos, nvm, temp)
+	if techage.is_activeformspec(pos) then
+		M(pos):set_string("formspec", boiler.formspec(pos, nvm))
+	end
+	return temp > 20
+end
+
+local function after_place_node(pos)
+	local node = minetest.get_node({x=pos.x, y=pos.y-1, z=pos.z})
+	if node.name ~= "techage:boiler1" then
+		minetest.remove_node(pos)
+		return true
+	end
+end
+
+local function after_dig_node(pos, oldnode)
+	Pipe:after_dig_node(pos)
+	techage.del_mem(pos)
+end
+
+-- boiler2: Main part, needed as generator
+minetest.register_node("techage:boiler2", {
+	description = S("TA2 Boiler Top"),
+	tiles = {"techage_boiler2.png"},
+	drawtype = "mesh",
+	mesh = "techage_cylinder_09.obj",
+	selection_box = {
+		type = "fixed",
+		fixed = {-10/32, -48/32, -10/32, 10/32, 16/32, 10/32},
+	},
+
+	can_dig = boiler.can_dig,
+	on_timer = node_timer,
+	on_rightclick = boiler.on_rightclick,
+	after_place_node = after_place_node,
+	after_dig_node = after_dig_node,
+	on_punch = boiler.on_punch,
+
+	paramtype = "light",
+	groups = {cracky=1},
+	on_rotate = screwdriver.disallow,
+	is_ground_content = false,
+	sounds = default.node_sound_metal_defaults(),
+})
+
+Pipe:add_secondary_node_names({"techage:boiler2"})
+Pipe:set_valid_sides("techage:boiler2", {"U"})
+
+techage.register_node({"techage:boiler2"}, {
+	on_transfer = function(pos, in_dir, topic, payload)
+		if topic == "trigger" then
+			if minetest.get_node({x=pos.x, y=pos.y-1, z=pos.z}).name ~= "techage:boiler1" then
+				return 0
+			end
+			local nvm = techage.get_nvm(pos)
+			nvm.fire_trigger = true
+			if not minetest.get_node_timer(pos):is_started() then
+				minetest.get_node_timer(pos):start(CYCLE_TIME)
+			end
+			if (nvm.temperature or 20) > 80 then
+				nvm.power_ratio = techage.transfer(pos, 6, "trigger", nil, Pipe, {
+						"techage:cylinder", "techage:cylinder_on"}) or 0
+				return nvm.power_ratio
+			else
+				return 0
+			end
+		end
+	end,
+})
+
+minetest.register_node("techage:boiler1", {
+	description = S("TA2 Boiler Base"),
+	tiles = {"techage_boiler.png"},
+	drawtype = "mesh",
+	mesh = "techage_cylinder_09.obj",
+	selection_box = {
+		type = "fixed",
+		fixed = {-8/32, -16/32, -8/32, 8/32, 16/32, 8/32},
+	},
+
+	paramtype = "light",
+	groups = {cracky=1},
+	on_rotate = screwdriver.disallow,
+	is_ground_content = false,
+	sounds = default.node_sound_metal_defaults(),
+})
+
+
+
+minetest.register_craft({
+	output = "techage:boiler1",
+	recipe = {
+		{"techage:iron_ingot", "", "techage:iron_ingot"},
+		{"default:bronze_ingot", "", "default:bronze_ingot"},
+		{"techage:iron_ingot", "default:bronze_ingot", "techage:iron_ingot"},
+	},
+})
+
+minetest.register_craft({
+	output = "techage:boiler2",
+	recipe = {
+		{"techage:iron_ingot", "techage:steam_pipeS", "techage:iron_ingot"},
+		{"default:bronze_ingot", "", "default:bronze_ingot"},
+		{"techage:iron_ingot", "", "techage:iron_ingot"},
+	},
+})