mods that hopefully work for a TechAge-based pack

mods/techage_modpack/signs_bot/cart_sensor.lua

@@ -0,0 +1,160 @@
+--[[
+
+	Signs Bot
+	=========
+
+	Copyright (C) 2019-2021 Joachim Stolberg
+
+	GPL v3
+	See LICENSE.txt for more information
+
+	Cart Sensor
+
+]]--
+
+-- for lazy programmers
+local P2S = function(pos) if pos then return minetest.pos_to_string(pos) end end
+local S2P = minetest.string_to_pos
+local M = minetest.get_meta
+
+-- Load support for I18n.
+local S = signs_bot.S
+
+local lib = signs_bot.lib
+
+local CYCLE_TIME = 2
+
+local function update_infotext(pos, dest_pos, dest_idx)
+	M(pos):set_string("infotext", S("Cart Sensor: Connected with").." "..P2S(dest_pos).." / "..dest_idx)
+end
+
+local function swap_node(pos, name)
+	local node = minetest.get_node(pos)
+	if node.name == name then
+		return false
+	end
+	node.name = name
+	minetest.swap_node(pos, node)
+	return true
+end
+
+local function node_timer(pos)
+	if minecart.is_cart_available(pos, M(pos):get_int("param2"), 1) then
+		if swap_node(pos, "signs_bot:cart_sensor_on") then
+			signs_bot.send_signal(pos)
+			signs_bot.lib.activate_extender_nodes(pos, true)
+		end
+	else
+		swap_node(pos, "signs_bot:cart_sensor")
+	end
+	return true
+end
+
+minetest.register_node("signs_bot:cart_sensor", {
+	description = S("Cart Sensor"),
+	inventory_image = "signs_bot_sensor_cart_inv.png",
+	drawtype = "nodebox",
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{ -11/32, -1/2, -11/32, 11/32, -5/16, 11/32},
+		},
+	},
+	tiles = {
+		-- up, down, right, left, back, front
+		"signs_bot_sensor1.png^signs_bot_sensor_cart.png",
+		"signs_bot_sensor1.png",
+		"signs_bot_sensor1.png^[transformFXR90",
+		"signs_bot_sensor1.png^[transformFXR90",
+		"signs_bot_sensor1.png^[transformFXR90",
+		"signs_bot_sensor1.png^[transformFXR180",
+	},
+
+	after_place_node = function(pos, placer)
+		local meta = M(pos)
+		meta:set_string("infotext", S("Cart Sensor: Not connected"))
+		minetest.get_node_timer(pos):start(CYCLE_TIME)
+		local node = minetest.get_node(pos)
+		meta:set_int("param2", (node.param2 + 2) % 4)
+	end,
+
+	on_timer = node_timer,
+	update_infotext = update_infotext,
+	on_rotate = screwdriver.disallow,
+	paramtype = "light",
+	use_texture_alpha = signs_bot.CLIP,
+	sunlight_propagates = true,
+	paramtype2 = "facedir",
+	is_ground_content = false,
+	groups = {sign_bot_sensor = 1, cracky = 1},
+	sounds = default.node_sound_metal_defaults(),
+})
+
+minetest.register_node("signs_bot:cart_sensor_on", {
+	description = S("Cart Sensor"),
+	drawtype = "nodebox",
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{ -11/32, -1/2, -11/32, 11/32, -5/16, 11/32},
+		},
+	},
+	tiles = {
+		-- up, down, right, left, back, front
+		"signs_bot_sensor1.png^signs_bot_sensor_cart_on.png",
+		"signs_bot_sensor1.png",
+		"signs_bot_sensor1.png^[transformFXR90",
+		"signs_bot_sensor1.png^[transformFXR90",
+		"signs_bot_sensor1.png^[transformFXR90",
+		"signs_bot_sensor1.png^[transformFXR180",
+	},
+
+	on_timer = node_timer,
+	update_infotext = update_infotext,
+	on_rotate = screwdriver.disallow,
+	paramtype = "light",
+	use_texture_alpha = signs_bot.CLIP,
+	sunlight_propagates = true,
+	paramtype2 = "facedir",
+	is_ground_content = false,
+	diggable = false,
+	groups = {sign_bot_sensor = 1, not_in_creative_inventory = 1},
+	sounds = default.node_sound_metal_defaults(),
+})
+
+minetest.register_craft({
+	output = "signs_bot:cart_sensor",
+	recipe = {
+		{"", "", ""},
+		{"dye:black", "group:stone", "dye:yellow"},
+		{"default:copper_ingot", "default:mese_crystal_fragment", "default:steel_ingot"}
+	}
+})
+
+minetest.register_lbm({
+	label = "[signs_bot] Restart timer",
+	name = "signs_bot:crop_sensor_restart",
+	nodenames = {"signs_bot:cart_sensor", "signs_bot:cart_sensor_on"},
+	run_at_every_load = true,
+	action = function(pos, node)
+		minetest.get_node_timer(pos):start(CYCLE_TIME)
+		if node.name == "signs_bot:cart_sensor_on" then
+			signs_bot.send_signal(pos)
+			signs_bot.lib.activate_extender_nodes(pos, true)
+		end
+	end
+})
+
+if minetest.get_modpath("doc") then
+	doc.add_entry("signs_bot", "cart_sensor", {
+		name = S("Cart Sensor"),
+		data = {
+			item = "signs_bot:cart_sensor",
+			text = table.concat({
+				S("The Cart Sensor detects and sends a signal, if a cart (Minecart) is nearby."),
+				S("the sensor range is one node/meter."),
+				S("The sensor has an active side (red) that must point to the rail/cart."),
+			}, "\n")
+		},
+	})
+end