techpack/tubelib_addons2/logic_not.lua

--[[

	Tubelib Addons 2
	================

	Copyright (C) 2017 Joachim Stolberg

	LGPLv2.1+
	See LICENSE.txt for more information

	logic_not.lua:
	
]]--

local function formspec(meta)
	local numbers = meta:get_string("numbers")
	return "size[7,5]"..
		"field[0.5,2;6,1;number;Destination node numbers;"..numbers.."]" ..
		"button_exit[1,3;2,1;exit;Save]"
end	

minetest.register_node("tubelib_addons2:logic_not", {
	description = "Tubelib Logic Not",
	tiles = {
		-- up, down, right, left, back, front
		'tubelib_front.png',
		'tubelib_front.png',
		'tubelib_front.png^tubelib_addon2_logic_not.png',
	},

	after_place_node = function(pos, placer)
		local meta = minetest.get_meta(pos)
		local own_number = tubelib.add_node(pos, "tubelib_addons2:logic_not")
		meta:set_string("own_number", own_number)
		meta:set_string("formspec", formspec(meta))
		meta:set_string("infotext", "Tubelib Logic Not "..own_number..": not connected")
		meta:set_string("owner", placer:get_player_name())
	end,

	on_receive_fields = function(pos, formname, fields, player)
		local meta = minetest.get_meta(pos)
		local owner = meta:get_string("owner")
		if owner ~= player:get_player_name() then
			return
		end
		
		if tubelib.check_numbers(fields.number) then
			meta:set_string("numbers", fields.number)
			local own_number = meta:get_string("own_number")
			meta:set_string("infotext", "Tubelib Logic Not "..own_number..": connected with "..fields.number)
			meta:set_string("formspec", formspec(meta))
		end
	end,
	
	after_dig_node = function(pos)
		tubelib.remove_node(pos)
	end,

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


minetest.register_craft({
	output = "tubelib_addons2:logic_not",
	recipe = {
		{"", "tubelib:wlanchip", ""},
		{"group:wood", "", "group:wood"},
		{"", "tubelib:wlanchip", ""},
	},
})

tubelib.register_node("tubelib_addons2:logic_not", {}, {
	on_recv_message = function(pos, topic, payload)
		if tubelib.data_not_corrupted(pos) then
			local meta = minetest.get_meta(pos)
			local owner = meta:get_string("owner")
			local numbers = meta:get_string("numbers")
			local own_number = meta:get_string("own_number")
			if topic == "set_numbers" then
				meta:set_string("infotext", "Tubelib Logic Not "..own_number..": connected with "..payload)
				meta:set_string("numbers", payload)
				meta:set_string("formspec", formspec(meta))
				return true
			elseif topic == "on" then
				return tubelib.send_message(numbers, owner, nil, "off", payload)
			elseif topic == "off" then
				return tubelib.send_message(numbers, owner, nil, "on", payload)
			end
		end
	end,
})