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