mods that hopefully work for a TechAge-based pack

mods/techage_modpack/techage/solar/inverter.lua

@@ -0,0 +1,266 @@
+--[[
+
+	TechAge
+	=======
+
+	Copyright (C) 2019-2022 Joachim Stolberg
+
+	AGPL v3
+	See LICENSE.txt for more information
+
+	TA4 Solar Power DC/AC Inverter
+
+]]--
+
+-- for lazy programmers
+local M = minetest.get_meta
+local S = techage.S
+local P2S = function(pos) if pos then return minetest.pos_to_string(pos) end end
+local S2P = minetest.string_to_pos
+
+local Cable = techage.ElectricCable
+local Solar = techage.TA4_Cable
+local power = networks.power
+local control = networks.control
+
+local CYCLE_TIME = 2
+local PWR_PERF = 100
+local COUNTDOWN_TICKS = 1
+
+local function determine_power(pos, nvm)
+	-- determine DC node position
+	local outdir = M(pos):get_int("leftdir")
+	local netw = networks.get_network_table(pos, Solar, outdir) or {}
+	local num_inv = #(netw.con or {})
+	local max_power = 0
+	for _, power in ipairs(control.request(pos, Solar, outdir, "junc", "power")) do
+		max_power = max_power + power
+	end
+
+	if num_inv == 1 then  -- only one inverter is allowed
+		nvm.max_power = math.min(PWR_PERF, max_power)
+	else
+		nvm.max_power = 0
+	end
+	return max_power, num_inv
+end
+
+local function has_dc_power(pos, nvm)
+	local time = minetest.get_timeofday() or 0
+	if time < 6.00/24.00 or time > 18.00/24.00 then
+		nvm.ticks = 0
+		nvm.max_power = 0
+		return false
+	end
+	nvm.ticks = nvm.ticks or 0
+	if (nvm.ticks % 30) == 0 then -- calculate max_power not to often
+		determine_power(pos, nvm)
+	else
+		nvm.max_power = nvm.max_power or 0
+	end
+	nvm.ticks = nvm.ticks + 1
+	return nvm.max_power > 0
+end
+
+local function formspec(self, pos, nvm)
+	local max_power = nvm.max_power or 0
+	local provided = nvm.provided or 0
+	local arrow = "image[2.5,1.5;1,1;techage_form_arrow_bg.png^[transformR270]"
+	if techage.is_running(nvm) then
+		arrow = "image[2.5,1.5;1,1;techage_form_arrow_fg.png^[transformR270]"
+	end
+	return "size[6,4]"..
+		default.gui_bg..
+		default.gui_bg_img..
+		default.gui_slots..
+		"box[0,-0.1;5.8,0.5;#c6e8ff]"..
+		"label[2.5,-0.1;"..minetest.colorize( "#000000", S("Inverter")).."]"..
+		techage.formspec_power_bar(pos, 0,   0.8, S("Power DC"), max_power, PWR_PERF)..
+		techage.formspec_power_bar(pos, 3.5, 0.8, S("Power AC"), provided, max_power)..
+		arrow..
+		"image_button[2.5,3;1,1;".. self:get_state_button_image(nvm) ..";state_button;]"..
+		"tooltip[2.5,3;1,1;"..self:get_state_tooltip(nvm).."]"
+end
+
+local function can_start(pos, nvm, state)
+	local max_power, num_inverter = determine_power(pos, nvm)
+	if num_inverter > 1 then return S("solar network error") end
+	if max_power == 0 then return S("no solar power") end
+	return true
+end
+
+local function start_node(pos, nvm, state)
+	local meta = M(pos)
+	nvm.provided = 0
+	nvm.ticks = 0
+	local outdir = meta:get_int("outdir")
+	power.start_storage_calc(pos, Cable, outdir)
+	techage.evaluate_charge_termination(nvm, meta)
+end
+
+local function stop_node(pos, nvm, state)
+	nvm.provided = 0
+	nvm.running = nil  -- legacy
+	local outdir = M(pos):get_int("outdir")
+	power.start_storage_calc(pos, Cable, outdir)
+end
+
+local State = techage.NodeStates:new({
+	node_name_passive = "techage:ta4_solar_inverter",
+	cycle_time = CYCLE_TIME,
+	standby_ticks = 2,
+	formspec_func = formspec,
+	infotext_name = S("TA4 Solar Inverter"),
+	can_start = can_start,
+	start_node = start_node,
+	stop_node = stop_node,
+})
+
+local function node_timer(pos, elapsed)
+	local nvm = techage.get_nvm(pos)
+	local running = techage.is_running(nvm)
+	local has_power = has_dc_power(pos, nvm)
+	if running and not has_power then
+		State:standby(pos, nvm)
+		stop_node(pos, nvm, State)
+	elseif not running and has_power then
+		State:start(pos, nvm)
+        -- start_node() is called implicit
+	elseif running then
+		local meta = M(pos)
+		local outdir = meta:get_int("outdir")
+		local tp1 = tonumber(meta:get_string("termpoint1"))
+		local tp2 = tonumber(meta:get_string("termpoint2"))
+		nvm.provided = power.provide_power(pos, Cable, outdir, nvm.max_power, tp1, tp2)
+		local val = power.get_storage_load(pos, Cable, outdir, nvm.max_power)
+		if val > 0 then
+			nvm.load = val
+		end
+		State:keep_running(pos, nvm, COUNTDOWN_TICKS)
+	end
+	if techage.is_activeformspec(pos) then
+		M(pos):set_string("formspec", formspec(State, pos, nvm))
+	end
+	return State:is_active(nvm)
+end
+
+local function on_receive_fields(pos, formname, fields, player)
+	if minetest.is_protected(pos, player:get_player_name()) then
+		return
+	end
+	local nvm = techage.get_nvm(pos)
+	State:state_button_event(pos, nvm, fields)
+end
+
+local function on_rightclick(pos, node, clicker)
+	local nvm = techage.get_nvm(pos)
+	determine_power(pos, nvm)
+	techage.set_activeformspec(pos, clicker)
+	M(pos):set_string("formspec", formspec(State, pos, nvm))
+end
+
+local function get_generator_data(pos, outdir, tlib2)
+	local nvm = techage.get_nvm(pos)
+	if techage.is_running(nvm) then
+		return {level = (nvm.load or 0) / nvm.max_power, perf = nvm.max_power, capa = nvm.max_power * 2}
+	end
+end
+
+minetest.register_node("techage:ta4_solar_inverter", {
+	description = S("TA4 Solar Inverter"),
+	tiles = {
+		-- up, down, right, left, back, front
+		"techage_filling_ta4.png^techage_frame_ta4_top.png^techage_appl_arrow.png",
+		"techage_filling_ta4.png^techage_frame_ta4.png",
+		"techage_filling_ta4.png^techage_frame_ta4.png^techage_appl_hole_electric.png",
+		"techage_filling_ta4.png^techage_frame_ta4.png^techage_appl_ta4_cable.png",
+		"techage_filling_ta4.png^techage_frame_ta4.png^techage_appl_inverter.png",
+		"techage_filling_ta4.png^techage_frame_ta4.png^techage_appl_inverter.png",
+	},
+	paramtype2 = "facedir",
+	groups = {cracky=2, crumbly=2, choppy=2},
+	on_rotate = screwdriver.disallow,
+	is_ground_content = false,
+
+	after_place_node = function(pos)
+		local nvm = techage.get_nvm(pos)
+		M(pos):set_int("outdir", networks.side_to_outdir(pos, "R"))
+		M(pos):set_int("leftdir", networks.side_to_outdir(pos, "L"))
+		Cable:after_place_node(pos)
+		Solar:after_place_node(pos)
+		local number = techage.add_node(pos, "techage:ta4_solar_inverter")
+		State:node_init(pos, nvm, number)
+		M(pos):set_string("formspec", formspec(State, pos, nvm))
+	end,
+
+	after_dig_node = function(pos, oldnode)
+		Cable:after_dig_node(pos)
+		Solar:after_dig_node(pos)
+		techage.del_mem(pos)
+	end,
+
+	on_receive_fields = on_receive_fields,
+	on_rightclick = on_rightclick,
+	on_timer = node_timer,
+	get_generator_data = get_generator_data,
+	ta3_formspec = techage.generator_settings("ta4", PWR_PERF)
+})
+
+power.register_nodes({"techage:ta4_solar_inverter"}, Cable, "gen", {"R"})
+power.register_nodes({"techage:ta4_solar_inverter"}, Solar, "con", {"L"})
+
+techage.register_node({"techage:ta4_solar_inverter"}, {
+	on_recv_message = function(pos, src, topic, payload)
+		local nvm = techage.get_nvm(pos)
+		if topic == "delivered" then
+			return math.floor((nvm.provided or 0) + 0.5)
+		else
+			return State:on_receive_message(pos, topic, payload)
+		end
+	end,
+	on_beduino_receive_cmnd = function(pos, src, topic, payload)
+		return State:on_beduino_receive_cmnd(pos, topic, payload)
+	end,
+	on_beduino_request_data = function(pos, src, topic, payload)
+		local nvm = techage.get_nvm(pos)
+		if topic == 135 then  -- Delivered Power
+			return 0, {math.floor((nvm.provided or 0) + 0.5)}
+		else
+			return State:on_beduino_request_data(pos, topic, payload)
+		end
+	end,
+})
+
+control.register_nodes({"techage:ta4_solar_inverter"}, {
+		on_receive = function(pos, tlib2, topic, payload)
+		end,
+		on_request = function(pos, tlib2, topic)
+			if topic == "info" then
+				local nvm = techage.get_nvm(pos)
+				local meta = M(pos)
+				return {
+					type = S("TA4 Solar Inverter"),
+					number = meta:get_string("node_number") or "",
+					running = techage.is_running(nvm) or false,
+					available = nvm.max_power or 0,
+					provided = nvm.provided or 0,
+					termpoint = meta:get_string("termpoint"),
+				}
+			end
+			return false
+		end,
+	}
+)
+
+minetest.register_craft({
+	output = "techage:ta4_solar_inverter",
+	recipe = {
+		{'default:steel_ingot', 'dye:green', 'default:steel_ingot'},
+		{'', 'techage:ta4_wlanchip', 'techage:electric_cableS'},
+		{'default:steel_ingot', "techage:baborium_ingot", 'default:steel_ingot'},
+	},
+})
+
+techage.register_node_for_v1_transition({"techage:ta4_solar_inverter"}, function(pos, node)
+	power.update_network(pos, nil, Solar)
+end)

mods/techage_modpack/techage/solar/minicell.lua

@@ -0,0 +1,171 @@
+--[[
+
+	TechAge
+	=======
+
+	Copyright (C) 2019-2022 Joachim Stolberg
+
+	AGPL v3
+	See LICENSE.txt for more information
+
+	TA4 Streetlamp Solar Cell
+
+]]--
+
+-- for lazy programmers
+local P = minetest.string_to_pos
+local M = minetest.get_meta
+local S = techage.S
+
+local CYCLE_TIME = 2
+local PWR_PERF = 1
+local PWR_CAPA = 2400 -- ticks (2s) with 1 ku ==> 80 min = 4 game days
+
+local Cable = techage.ElectricCable
+local power = networks.power
+local control = networks.control
+
+local function node_timer(pos, elapsed)
+	local nvm = techage.get_nvm(pos)
+	nvm.capa = nvm.capa or 0
+	pos.y = pos.y + 1
+	local light = minetest.get_node_light(pos) or 0
+	local t = minetest.get_timeofday()
+	pos.y = pos.y - 1
+
+	if t > 0.25 and t < 0.75 then
+		if nvm.providing then
+			nvm.providing = false
+			nvm.provided = 0
+		end
+		if light >= (minetest.LIGHT_MAX - 1) then
+			nvm.capa = math.min(nvm.capa + PWR_PERF * 1.2, PWR_CAPA)
+		end
+	else
+		if nvm.capa > 0 then
+			if not nvm.providing then
+				power.start_storage_calc(pos, Cable, 5)
+				nvm.providing = true
+			else
+				nvm.provided = power.provide_power(pos, Cable, 5, PWR_PERF, 0.8, 1.0)
+				nvm.capa = nvm.capa - nvm.provided
+			end
+		else
+			power.start_storage_calc(pos, Cable, 5)
+			nvm.providing = false
+			nvm.provided = 0
+			nvm.capa = 0
+		end
+	end
+	return true
+end
+
+local function after_place_node(pos)
+	local meta = M(pos)
+	local number = techage.add_node(pos, "techage:ta4_solar_minicell")
+	meta:set_string("node_number", number)
+	meta:set_string("infotext", S("TA4 Streetlamp Solar Cell").." "..number)
+	local nvm = techage.get_nvm(pos)
+	nvm.capa = 0
+	nvm.providing = false
+	minetest.get_node_timer(pos):start(CYCLE_TIME)
+	Cable:after_place_node(pos)
+end
+
+local function after_dig_node(pos, oldnode, oldmetadata)
+	Cable:after_dig_node(pos)
+	techage.remove_node(pos, oldnode, oldmetadata)
+	techage.del_mem(pos)
+end
+
+minetest.register_node("techage:ta4_solar_minicell", {
+	description = S("TA4 Streetlamp Solar Cell"),
+	tiles = {
+		-- up, down, right, left, back, front
+		"techage_solar_cell_mini_top.png",
+		"techage_solar_cell_mini_bottom.png",
+		"techage_solar_cell_mini_side.png",
+	},
+	drawtype = "nodebox",
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{-14/32, -8/32, -14/32,  14/32, -6/32, 14/32},
+			{-7/32, -16/32, -7/32,  7/32, -8/32, 7/32},
+		},
+	},
+	paramtype2 = "facedir",
+	groups = {cracky=2, crumbly=2, choppy=2},
+	is_ground_content = false,
+	use_texture_alpha = techage.CLIP,
+
+	after_place_node = after_place_node,
+	after_dig_node = after_dig_node,
+	on_timer = node_timer,
+})
+
+power.register_nodes({"techage:ta4_solar_minicell"}, Cable, "gen", {"D"})
+
+control.register_nodes({"techage:ta4_solar_minicell"}, {
+		on_receive = function(pos, tlib2, topic, payload)
+		end,
+		on_request = function(pos, tlib2, topic)
+			if topic == "info" then
+				local nvm = techage.get_nvm(pos)
+				local meta = M(pos)
+				return {
+					type = S("TA4 Streetlamp Solar Cell"),
+					number = meta:get_string("node_number") or "",
+					running = nvm.providing or false,
+					available = PWR_PERF,
+					provided = nvm.provided or 0,
+					termpoint = "80% - 100%",
+				}
+			end
+			return false
+		end,
+	}
+)
+
+techage.register_node({"techage:ta4_solar_minicell"}, {
+	on_recv_message = function(pos, src, topic, payload)
+		local nvm = techage.get_nvm(pos)
+		if topic == "state" then
+			if nvm.providing then
+				return "discharging"
+			elseif (nvm.capa or 0) > 0 then
+				return "charging"
+			else
+				return "unused"
+			end
+		else
+			return "unsupported"
+		end
+	end,
+	on_beduino_request_data = function(pos, src, topic, payload)
+		local nvm = techage.get_nvm(pos)
+		if topic == 145 then  -- Solar Cell State
+			if nvm.providing then
+				return 0, {2}
+			elseif (nvm.capa or 0) > 0 then
+				return 0, {1}
+			else
+				return 0, {0}
+			end
+		else
+			return 2, ""
+		end
+	end,
+	on_node_load = function(pos)
+		minetest.get_node_timer(pos):start(CYCLE_TIME)
+	end,
+})
+
+minetest.register_craft({
+	output = "techage:ta4_solar_minicell",
+	recipe = {
+		{"", "techage:ta4_wlanchip", ""},
+		{"techage:ta4_silicon_wafer", "techage:ta4_silicon_wafer", "techage:ta4_silicon_wafer"},
+		{"default:tin_ingot", "techage:iron_ingot", "default:copper_ingot"},
+	},
+})

mods/techage_modpack/techage/solar/solarcell.lua

@@ -0,0 +1,293 @@
+--[[
+
+	TechAge
+	=======
+
+	Copyright (C) 2019-2020 Joachim Stolberg
+
+	AGPL v3
+	See LICENSE.txt for more information
+
+	TA4 Solar Module and Carriers
+
+]]--
+
+-- for lazy programmers
+local P = minetest.string_to_pos
+local M = minetest.get_meta
+local S = techage.S
+
+local PWR_PERF = 3
+
+local Cable = techage.TA4_Cable
+local power = networks.power
+local control = networks.control
+
+local function temperature(pos)
+	local data = minetest.get_biome_data(pos)
+	if data then
+		return math.floor(data.heat) or 0
+	end
+	return 0
+end
+
+-- return the required param2 for solar modules
+local function get_param2(pos, side)
+	local dir = networks.side_to_outdir(pos, side)
+	return (dir + 1) % 4
+end
+
+-- do we have enough light?
+local function light(pos)
+	if minetest.get_node(pos).name ~= "air" then return false end
+	local light = minetest.get_node_light(pos) or 0
+	return light >= (15 - 1)
+end
+
+-- check if solar module is available and has the correct orientation
+local function is_solar_module(base_pos, pos, side)
+	local pos1 = techage.get_pos(pos, side)
+	if pos1 then
+		local node = techage.get_node_lvm(pos1)
+		if node and node.name == "techage:ta4_solar_module" and
+						light({x = pos1.x, y = pos1.y + 1, z = pos1.z}) then
+			if side == "L" and node.param2 == M(base_pos):get_int("left_param2") then
+				return true
+			elseif side == "R" and node.param2 == M(base_pos):get_int("right_param2") then
+				return true
+			end
+		end
+	end
+	return false
+end
+
+-- provide the available power, which is temperature dependent
+local function on_getpower1(pos)
+	local pos1 = {x = pos.x, y = pos.y, z = pos.z}
+	if is_solar_module(pos, pos1, "L") and is_solar_module(pos, pos1, "R") then
+		return PWR_PERF * M(pos):get_int("temperature") / 100.0
+	end
+	return 0
+end
+
+local function on_getpower2(pos)
+	local pos1 = {x = pos.x, y = pos.y+1, z = pos.z}
+	if is_solar_module(pos, pos1, "L") and is_solar_module(pos, pos1, "R") then
+		return PWR_PERF * M(pos):get_int("temperature") / 100.0
+	end
+	return 0
+end
+
+local function after_place_node(pos)
+	M(pos):set_int("temperature", temperature(pos))
+	M(pos):set_int("left_param2", get_param2(pos, "L"))
+	M(pos):set_int("right_param2", get_param2(pos, "R"))
+	Cable:after_place_node(pos)
+end
+
+local function after_dig_node(pos, oldnode)
+	Cable:after_dig_node(pos)
+end
+
+local function tubelib2_on_update2(pos, outdir, tlib2, node)
+	power.update_network(pos, 0, tlib2, node)
+end
+
+minetest.register_node("techage:ta4_solar_module", {
+	description = S("TA4 Solar Module"),
+	inventory_image = "techage_solar_module_top.png",
+	tiles = {
+		-- up, down, right, left, back, front
+		"techage_solar_module_top.png",
+		"techage_solar_module_bottom.png",
+	},
+	drawtype = "nodebox",
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{-1/2, 7/16, -1/2,  1/2, 8/16, 16/16},
+		},
+	},
+	techage_info = function(pos)
+		local power = 0
+		local pos1 = {x = pos.x, y = pos.y + 1, z = pos.z}
+		if light(pos1) then
+			power = PWR_PERF * temperature(pos) / 200.0
+		end
+		local light = minetest.get_node_light(pos1).." / " ..15
+		return S("power").." = "..power..", "..S("light").." = "..light
+	end,
+	paramtype = "light",
+	use_texture_alpha = techage.CLIP,
+	paramtype2 = "facedir",
+	on_rotate = screwdriver.disallow,
+	groups = {cracky=2, crumbly=2, choppy=2},
+	is_ground_content = false,
+	sounds = default.node_sound_glass_defaults(),
+})
+
+minetest.register_node("techage:ta4_solar_carrier", {
+	description = S("TA4 Solar Carrier Module"),
+	tiles = {
+		-- up, down, right, left, back, front
+		"techage_concrete.png^[brighten",
+		"techage_concrete.png^[brighten",
+		"techage_concrete.png^[brighten",
+		"techage_concrete.png^[brighten",
+		"techage_concrete.png^[brighten^techage_appl_ta4_cable.png",
+		"techage_concrete.png^[brighten^techage_appl_ta4_cable.png",
+	},
+	drawtype = "nodebox",
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{-3/8, -8/16, -1/2,  3/8, -6/16, 1/2},
+			{-1/8, -6/16, -1/2,  1/8,  6/16, 1/2},
+			{-3/8,  5/16, -1/2,  3/8,  7/16, 1/2},
+		},
+	},
+	after_place_node = function(pos)
+		M(pos):set_int("temperature", temperature(pos))
+		M(pos):set_int("left_param2", get_param2(pos, "L"))
+		M(pos):set_int("right_param2", get_param2(pos, "R"))
+	end,
+
+	after_place_node = after_place_node,
+	after_dig_node = after_dig_node,
+	tubelib2_on_update2 = tubelib2_on_update2,
+
+	paramtype = "light",
+	use_texture_alpha = techage.CLIP,
+	paramtype2 = "facedir",
+	on_rotate = screwdriver.disallow,
+	groups = {cracky=2, crumbly=2, choppy=2},
+	is_ground_content = false,
+	sounds = default.node_sound_stone_defaults(),
+})
+
+minetest.register_node("techage:ta4_solar_carrierB", {
+	description = S("TA4 Solar Carrier Module B"),
+	tiles = {
+		-- up, down, right, left, back, front
+		"techage_concrete.png^[brighten^techage_appl_ta4_cable.png",
+		"techage_concrete.png^[brighten",
+		"techage_concrete.png^[brighten",
+		"techage_concrete.png^[brighten",
+		"techage_concrete.png^[brighten^techage_appl_ta4_cable.png",
+		"techage_concrete.png^[brighten^techage_appl_ta4_cable.png",
+	},
+	drawtype = "nodebox",
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{-3/8, -8/16, -1/2,  3/8, -6/16, 1/2},
+			{-1/8, -6/16, -1/2,  1/8,  8/16, 1/2},
+		},
+	},
+	after_place_node = function(pos)
+		M(pos):set_int("temperature", temperature(pos))
+		M(pos):set_int("left_param2", get_param2(pos, "L"))
+		M(pos):set_int("right_param2", get_param2(pos, "R"))
+		Cable:after_place_node(pos)
+	end,
+
+	after_place_node = after_place_node,
+	after_dig_node = after_dig_node,
+	tubelib2_on_update2 = tubelib2_on_update2,
+
+	paramtype = "light",
+	use_texture_alpha = techage.CLIP,
+	paramtype2 = "facedir",
+	on_rotate = screwdriver.disallow,
+	groups = {cracky=2, crumbly=2, choppy=2},
+	is_ground_content = false,
+	sounds = default.node_sound_stone_defaults(),
+})
+
+minetest.register_node("techage:ta4_solar_carrierT", {
+	description = S("TA4 Solar Carrier Module T"),
+	tiles = {
+		-- up, down, right, left, back, front
+		"techage_concrete.png^[brighten",
+		"techage_concrete.png^[brighten",
+		"techage_concrete.png^[brighten",
+		"techage_concrete.png^[brighten",
+		"techage_concrete.png^[brighten",
+		"techage_concrete.png^[brighten",
+	},
+	drawtype = "nodebox",
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{-1/8, -8/16, -1/2,  1/8,  6/16, 1/2},
+			{-3/8,  5/16, -1/2,  3/8,  7/16, 1/2},
+		},
+	},
+
+	paramtype = "light",
+	use_texture_alpha = techage.CLIP,
+	paramtype2 = "facedir",
+	groups = {cracky=2, crumbly=2, choppy=2},
+	is_ground_content = false,
+	sounds = default.node_sound_stone_defaults(),
+})
+
+power.register_nodes({"techage:ta4_solar_carrier", "techage:ta4_solar_carrierB"}, Cable, "junc", {"F", "B"})
+
+control.register_nodes({"techage:ta4_solar_carrier"}, {
+		on_receive = function(pos, tlib2, topic, payload)
+		end,
+		on_request = function(pos, tlib2, topic)
+			if topic == "power" then
+				return on_getpower1(pos)
+			end
+		end,
+	}
+)
+
+control.register_nodes({"techage:ta4_solar_carrierB"}, {
+		on_receive = function(pos, tlib2, topic, payload)
+		end,
+		on_request = function(pos, tlib2, topic)
+			if topic == "power" then
+				return on_getpower2(pos)
+			end
+		end,
+	}
+)
+
+minetest.register_craft({
+	output = "techage:ta4_solar_module",
+	recipe = {
+		{"techage:ta4_silicon_wafer", "techage:ta4_silicon_wafer", "techage:ta4_silicon_wafer"},
+		{"default:copper_ingot", "default:tin_ingot", "default:copper_ingot"},
+		{"", "", ""},
+	},
+})
+
+minetest.register_craft({
+	output = "techage:ta4_solar_carrierB 2",
+	recipe = {
+		{"", "default:steel_ingot", ""},
+		{"", "techage:ta4_power_cableS", ""},
+		{"default:steel_ingot", "default:steel_ingot", "default:steel_ingot"},
+	},
+})
+
+minetest.register_craft({
+	output = "techage:ta4_solar_carrierT 2",
+	recipe = {
+		{"default:steel_ingot", "default:steel_ingot", "default:steel_ingot"},
+		{"", "default:steel_ingot", ""},
+		{"", "techage:ta4_power_cableS", ""},
+	},
+})
+
+minetest.register_craft({
+	output = "techage:ta4_solar_carrier",
+	recipe = {
+		{"", "techage:ta4_solar_carrierT", ""},
+		{"", "techage:ta4_solar_carrierB", ""},
+		{"", "", ""},
+	},
+})