/* $Id$ */ /* * This file is part of OpenTTD. * 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. * 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. * 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/>. */ /** @file pbs.h PBS support routines */ #ifndef PBS_H #define PBS_H #include "tile_type.h" #include "direction_type.h" #include "track_type.h" #include "vehicle_type.h" TrackBits GetReservedTrackbits(TileIndex t); void SetRailStationPlatformReservation(TileIndex start, DiagDirection dir, bool b); bool TryReserveRailTrack(TileIndex tile, Track t); void UnreserveRailTrack(TileIndex tile, Track t); /** This struct contains information about the end of a reserved path. */ struct PBSTileInfo { TileIndex tile; ///< Tile the path ends, INVALID_TILE if no valid path was found. Trackdir trackdir; ///< The reserved trackdir on the tile. bool okay; ///< True if tile is a safe waiting position, false otherwise. PBSTileInfo() : tile(INVALID_TILE), trackdir(INVALID_TRACKDIR), okay(false) {} PBSTileInfo(TileIndex _t, Trackdir _td, bool _okay) : tile(_t), trackdir(_td), okay(_okay) {} }; PBSTileInfo FollowTrainReservation(const Train *v, Vehicle **train_on_res = NULL); bool IsSafeWaitingPosition(const Train *v, TileIndex tile, Trackdir trackdir, bool include_line_end, bool forbid_90deg = false); bool IsWaitingPositionFree(const Train *v, TileIndex tile, Trackdir trackdir, bool forbid_90deg = false); Train *GetTrainForReservation(TileIndex tile, Track track); /** * Check whether some of tracks is reserved on a tile. * * @param tile the tile * @param tracks the tracks to test * @return true if at least on of tracks is reserved */ static inline bool HasReservedTracks(TileIndex tile, TrackBits tracks) { return (GetReservedTrackbits(tile) & tracks) != TRACK_BIT_NONE; } #endif /* PBS_H */