mods that hopefully work for a TechAge-based pack

mods/techage_modpack/techage/tools/trowel.lua

@@ -0,0 +1,68 @@
+--[[
+
+	TechAge
+	=======
+
+	Copyright (C) 2019 Joachim Stolberg
+
+	AGPL v3
+	See LICENSE.txt for more information
+
+	Trowel tool to hide/open cable/pipe/tube nodes
+
+]]--
+
+-- for lazy programmers
+local P = minetest.string_to_pos
+local M = minetest.get_meta
+local S = techage.S
+
+local function replace_node(itemstack, placer, pointed_thing)
+	if pointed_thing.type == "node" then
+		local pos = pointed_thing.under
+		local name = placer:get_player_name()
+		if minetest.is_protected(pos, name) then
+			return
+		end
+		local node = minetest.get_node(pos)
+		local res = false
+		if minetest.get_item_group(node.name, "techage_trowel") == 1 then
+			res = networks.hide_node(pos, node, placer)
+		elseif networks.hidden_name(pos) or M(pos):get_string("techage_hidden_nodename") ~= "" then
+			res = networks.open_node(pos, node, placer)
+		else
+			minetest.chat_send_player(placer:get_player_name(), "Invalid/unsuported block!")
+			return
+		end
+		if res then
+			minetest.sound_play("default_dig_snappy", {
+				pos = pos,
+				gain = 1,
+				max_hear_distance = 5})
+		elseif placer and placer.get_player_name then
+			minetest.chat_send_player(placer:get_player_name(), "Invalid fill material in inventory slot 1!")
+		end
+	end
+end
+
+minetest.register_tool("techage:trowel", {
+	description = S("TechAge Trowel"),
+	inventory_image = "techage_trowel.png",
+	wield_image = "techage_trowel.png",
+	use_texture_alpha = techage.CLIP,
+	groups = {cracky=1},
+	on_use = replace_node,
+	on_place = replace_node,
+	node_placement_prediction = "",
+	stack_max = 1,
+})
+
+
+minetest.register_craft({
+	output = "techage:trowel",
+	recipe = {
+		{"basic_materials:steel_bar", "basic_materials:steel_bar", ""},
+		{"basic_materials:steel_bar", "default:stick", ""},
+		{"", "", "default:stick"},
+	},
+})