mods that hopefully work for a TechAge-based pack

mods/techage_modpack/signs_bot/signal.lua

@@ -0,0 +1,88 @@
+--[[
+
+	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, sensor_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
+			node.hash = minetest.hash_node_position(sensor_pos)
+			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
+
+-- Get the state from the bot box
+function signs_bot.get_state(sensor_pos)
+	local meta = sensor_pos and M(sensor_pos)
+	if meta then
+		local dest_pos = meta:get_string("signal_pos")
+		local pos = S2P(dest_pos)
+		if pos and pos.x then
+			local mem = tubelib2.get_mem(pos)
+			return mem.running
+		end
+		return false
+	end
+end