mods that hopefully work for a TechAge-based pack

mods/techage_modpack/hyperloop/booking.lua

@@ -0,0 +1,84 @@
+--[[
+
+	Hyperloop Mod
+	=============
+
+	Copyright (C) 2017-2019 Joachim Stolberg
+
+	LGPLv2.1+
+	See LICENSE.txt for more information
+
+	Station reservation/blocking and trip booking
+]]--
+
+-- for lazy programmers
+local SP = function(pos) if pos then return minetest.pos_to_string(pos) end end
+--local P = minetest.string_to_pos
+--local M = minetest.get_meta
+
+local S = hyperloop.S
+--local NS = hyperloop.NS
+
+local tBlockingTime = {}
+local tBookings = {}  -- open bookings: tBookings[SP(departure_pos)] = arrival_pos
+
+local Stations = hyperloop.Stations
+
+-- Reserve departure and arrival stations for some time
+function hyperloop.reserve(departure_pos, arrival_pos, player)
+	if Stations:get(departure_pos) == nil then
+		hyperloop.chat(player, S("Station data is corrupted. Please rebuild the station!"))
+		return false
+	elseif Stations:get(arrival_pos) == nil then
+		hyperloop.chat(player, S("Station data is corrupted. Please rebuild the station!"))
+		return false
+	end
+
+	if (tBlockingTime[SP(departure_pos)] or 0) > minetest.get_gametime() then
+		hyperloop.chat(player, S("Station is still blocked. Please try again in a few seconds!"))
+		return false
+	elseif (tBlockingTime[SP(arrival_pos)] or 0) > minetest.get_gametime() then
+		hyperloop.chat(player, S("Station is still blocked. Please try again in a few seconds!"))
+		return false
+	end
+
+	-- place a reservation for 20 seconds to start the trip
+	tBlockingTime[SP(departure_pos)] = minetest.get_gametime() + 20
+	tBlockingTime[SP(arrival_pos)] = minetest.get_gametime() + 20
+	return true
+end
+
+-- block the already reserved stations
+function hyperloop.block(departure_pos, arrival_pos, seconds)
+	if Stations:get(departure_pos) == nil then
+		return false
+	elseif Stations:get(arrival_pos) == nil then
+		return false
+	end
+
+	tBlockingTime[SP(departure_pos)] = minetest.get_gametime() + seconds
+	tBlockingTime[SP(arrival_pos)] = minetest.get_gametime() + seconds
+	return true
+end
+
+-- check if station is blocked
+function hyperloop.is_blocked(pos)
+	if not pos then return false end
+	if Stations:get(pos) == nil then
+		return false
+	end
+
+	return (tBlockingTime[SP(pos)] or 0) > minetest.get_gametime()
+end
+
+
+function hyperloop.set_arrival(departure_pos, arrival_pos)
+	tBookings[SP(departure_pos)] = arrival_pos
+end
+
+function hyperloop.get_arrival(departure_pos)
+	-- Return and delete the arrival pos
+	local arrival_pos = tBookings[SP(departure_pos)]
+	tBookings[SP(departure_pos)] = nil
+	return arrival_pos
+end