mirror of https://github.com/OpenTTD/OpenTTD.git
64 lines
2.5 KiB
C
64 lines
2.5 KiB
C
/*
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* This file is part of OpenTTD.
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* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
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* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file pbs.h PBS support routines */
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#ifndef PBS_H
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#define PBS_H
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#include "tile_type.h"
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#include "direction_type.h"
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#include "track_type.h"
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#include "vehicle_type.h"
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TrackBits GetReservedTrackbits(TileIndex t);
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void SetRailStationPlatformReservation(TileIndex start, DiagDirection dir, bool b);
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bool TryReserveRailTrack(TileIndex tile, Track t, bool trigger_stations = true);
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void UnreserveRailTrack(TileIndex tile, Track t);
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/** This struct contains information about the end of a reserved path. */
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struct PBSTileInfo {
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TileIndex tile; ///< Tile the path ends, INVALID_TILE if no valid path was found.
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Trackdir trackdir; ///< The reserved trackdir on the tile.
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bool okay; ///< True if tile is a safe waiting position, false otherwise.
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/**
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* Create an empty PBSTileInfo.
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*/
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PBSTileInfo() : tile(INVALID_TILE), trackdir(INVALID_TRACKDIR), okay(false) {}
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/**
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* Create a PBSTileInfo with given tile, track direction and safe waiting position information.
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* @param _t The tile where the path ends.
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* @param _td The reserved track dir on the tile.
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* @param _okay Whether the tile is a safe waiting point or not.
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*/
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PBSTileInfo(TileIndex _t, Trackdir _td, bool _okay) : tile(_t), trackdir(_td), okay(_okay) {}
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};
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PBSTileInfo FollowTrainReservation(const Train *v, Vehicle **train_on_res = nullptr);
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bool IsSafeWaitingPosition(const Train *v, TileIndex tile, Trackdir trackdir, bool include_line_end, bool forbid_90deg = false);
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bool IsWaitingPositionFree(const Train *v, TileIndex tile, Trackdir trackdir, bool forbid_90deg = false);
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Train *GetTrainForReservation(TileIndex tile, Track track);
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/**
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* Check whether some of tracks is reserved on a tile.
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*
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* @param tile the tile
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* @param tracks the tracks to test
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* @return true if at least on of tracks is reserved
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*/
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inline bool HasReservedTracks(TileIndex tile, TrackBits tracks)
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{
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return (GetReservedTrackbits(tile) & tracks) != TRACK_BIT_NONE;
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}
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#endif /* PBS_H */
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