techpack/tubelib/lamp.lua

--[[

	Tube Library
	============

	Copyright (C) 2017 Joachim Stolberg

	LGPLv2.1+
	See LICENSE.txt for more information

	lamp.lua:
	
	Example of a simple communication node, only receiving messages from others.
	This node claims a position number and registers its message interface.
	The Lamp supports the following messages:
	 - topic = "on", payload  = nil
	 - topic = "off" , payload  = nil

]]--

local function switch_on(pos, node)
	node.name = "tubelib:lamp_on"
	minetest.swap_node(pos, node)
end	

local function switch_off(pos, node)
	node.name = "tubelib:lamp"
	minetest.swap_node(pos, node)
end	

minetest.register_node("tubelib:lamp", {
	description = "Tubelib Lamp",
	tiles = {
		'tubelib_lamp.png',
	},

	after_place_node = function(pos, placer)
		local number = tubelib.add_node(pos, "tubelib:lamp")  -- <<=== tubelib
		local meta = minetest.get_meta(pos)
		meta:set_string("infotext", "Tubelib Lamp "..number)
	end,

	on_rightclick = function(pos, node, clicker)
		if not minetest.is_protected(pos, clicker:get_player_name()) then
			switch_on(pos, node)
		end
	end,

	after_dig_node = function(pos)
		tubelib.remove_node(pos)  -- <<=== tubelib
	end,

	paramtype = "light",
	light_source = 0,	
	sunlight_propagates = true,
	paramtype2 = "facedir",
	groups = {choppy=2, cracky=2, crumbly=2},
	is_ground_content = false,
	sounds = default.node_sound_wood_defaults(),
})

minetest.register_node("tubelib:lamp_on", {
	description = "Tubelib Lamp",
	tiles = {
		'tubelib_lamp.png',
	},

	on_rightclick = function(pos, node, clicker)
		if not minetest.is_protected(pos, clicker:get_player_name()) then
			switch_off(pos, node)
		end
	end,

	paramtype = "light",
	light_source = LIGHT_MAX,	
	sunlight_propagates = true,
	paramtype2 = "facedir",
	groups = {crumbly=0, not_in_creative_inventory=1},
	is_ground_content = false,
	sounds = default.node_sound_wood_defaults(),
})

minetest.register_craft({
	output = "tubelib:lamp 4",
	recipe = {
		{"wool:white",       "wool:white",        "wool:white"},
		{"tubelib:wlanchip", "default:coal_lump", ""},
		{"group:wood",       "",                  "group:wood"},
	},
})

--------------------------------------------------------------- tubelib
tubelib.register_node("tubelib:lamp", {"tubelib:lamp_on"}, {
	on_pull_item = nil,			-- lamp has no inventory
	on_push_item = nil,			-- lamp has no inventory
	on_unpull_item = nil,		-- lamp has no inventory
	on_recv_message = function(pos, topic, payload)
		local node = minetest.get_node(pos)
		if topic == "on" then
			switch_on(pos, node)
		elseif topic == "off" then
			switch_off(pos, node)
		end
	end,
})		
--------------------------------------------------------------- tubelib