techage_modpack/signs_bot/signal.lua
2021-05-14 18:50:16 +02:00

74 lines
1.8 KiB
Lua

--[[
Signs Bot
=========
Copyright (C) 2019-2021 Joachim Stolberg
GPL v3
See LICENSE.txt for more information
Signal function
]]--
-- 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
-- Used by the pairing tool
function signs_bot.get_node_type(pos)
local node = tubelib2.get_node_lvm(pos)
local ndef = minetest.registered_nodes[node.name]
local is_sensor = minetest.get_item_group(node.name, "sign_bot_sensor") == 1
if ndef then
if ndef.signs_bot_get_signal and is_sensor then
return "repeater"
elseif ndef.signs_bot_get_signal then
return "actuator"
elseif is_sensor then
return "sensor"
end
end
end
-- Used by the pairing tool
function signs_bot.get_signal(actuator_pos)
if actuator_pos then
local node = tubelib2.get_node_lvm(actuator_pos)
local ndef = minetest.registered_nodes[node.name]
if ndef and ndef.signs_bot_get_signal then
return ndef.signs_bot_get_signal(actuator_pos, node)
end
end
end
-- Used by the pairing tool
function signs_bot.store_signal(sensor_pos, dest_pos, signal)
local meta = sensor_pos and M(sensor_pos)
if meta then
meta:set_string("signal_pos", P2S(dest_pos))
meta:set_string("signal_data", signal)
end
end
--
-- Send a signal from a sensor to a actuator
--
function signs_bot.send_signal(sensor_pos)
local meta = sensor_pos and M(sensor_pos)
if meta then
local dest_pos = meta:get_string("signal_pos")
local signal = meta:get_string("signal_data")
if dest_pos ~= "" and signal ~= "" then
local pos = S2P(dest_pos)
local node = tubelib2.get_node_lvm(pos)
local ndef = minetest.registered_nodes[node.name]
if ndef and ndef.signs_bot_on_signal then
ndef.signs_bot_on_signal(pos, node, signal)
end
end
end
end