mods that hopefully work for a TechAge-based pack

mods/techage_modpack/signs_bot/bot_flap.lua

@@ -0,0 +1,76 @@
+--[[
+
+	Signs Bot
+	=========
+
+	Copyright (C) 2019-2021 Joachim Stolberg
+
+	GPLv3
+	See LICENSE.txt for more information
+
+	Signs Bot: Bot Flap
+
+]]--
+
+-- Load support for I18n.
+local S = signs_bot.S
+
+local function formspec(cmnd)
+	cmnd = minetest.formspec_escape(cmnd)
+	return "size[6,5]"..
+	default.gui_bg..
+	default.gui_bg_img..
+	default.gui_slots..
+	"label[0.3,0.3;"..cmnd.."]"..
+	"button_exit[2.5,5.5;2,1;exit;"..S("Exit").."]"
+end
+
+local commands = [[dig_sign 6
+move 2
+place_sign_behind 6
+]]
+
+minetest.register_node("signs_bot:bot_flap", {
+	description = S("Bot Flap"),
+	paramtype2 = "facedir",
+	tiles = {
+		"signs_bot_bot_flap_top.png",
+		"signs_bot_bot_flap_top.png",
+		"signs_bot_bot_flap_top.png",
+		"signs_bot_bot_flap_top.png",
+		"signs_bot_bot_flap.png",
+		"signs_bot_bot_flap.png",
+	},
+	after_place_node = function(pos, placer)
+		local meta = minetest.get_meta(pos)
+		meta:set_string("signs_bot_cmnd", commands)
+		meta:set_string("formspec", formspec(commands))
+	end,
+	on_rotate = screwdriver.disallow,
+	is_ground_content = false,
+	groups = {choppy = 2, oddly_breakable_by_hand = 2, wood = 1, sign_bot_sign = 1},
+	sounds = default.node_sound_wood_defaults(),
+})
+
+minetest.register_craft({
+	output = "signs_bot:bot_flap",
+	recipe = {
+		{"signs_bot:sign_cmnd", "group:wood", "default:steel_ingot"},
+		{"", "", ""},
+		{"", "", ""}
+	}
+})
+
+if minetest.get_modpath("doc") then
+	doc.add_entry("signs_bot", "bot_flap", {
+		name = S("Bot Flap"),
+		data = {
+			item = "signs_bot:bot_flap",
+			text = table.concat({
+				S("The flap is a simple block used as door for the bot."),
+				S("Place the flap in any wall, and the bot will automatically open"),
+				S("and close the flap as it passes through it."),
+			}, "\n")
+		},
+	})
+end