pbs.h

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00001 /* $Id: pbs.h 18647 2009-12-27 14:37:50Z michi_cc $ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * 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.
00006  * 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.
00007  * 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/>.
00008  */
00009 
00012 #ifndef PBS_H
00013 #define PBS_H
00014 
00015 #include "tile_type.h"
00016 #include "direction_type.h"
00017 #include "track_type.h"
00018 #include "vehicle_type.h"
00019 
00020 TrackBits GetReservedTrackbits(TileIndex t);
00021 
00022 void SetRailStationPlatformReservation(TileIndex start, DiagDirection dir, bool b);
00023 
00024 bool TryReserveRailTrack(TileIndex tile, Track t);
00025 void UnreserveRailTrack(TileIndex tile, Track t);
00026 
00028 struct PBSTileInfo {
00029   TileIndex tile;      
00030   Trackdir  trackdir;  
00031   bool      okay;      
00032 
00033   PBSTileInfo() : tile(INVALID_TILE), trackdir(INVALID_TRACKDIR), okay(false) {}
00034   PBSTileInfo(TileIndex _t, Trackdir _td, bool _okay) : tile(_t), trackdir(_td), okay(_okay) {}
00035 };
00036 
00037 PBSTileInfo FollowTrainReservation(const Train *v, Vehicle **train_on_res = NULL);
00038 bool IsSafeWaitingPosition(const Train *v, TileIndex tile, Trackdir trackdir, bool include_line_end, bool forbid_90deg = false);
00039 bool IsWaitingPositionFree(const Train *v, TileIndex tile, Trackdir trackdir, bool forbid_90deg = false);
00040 
00041 Train *GetTrainForReservation(TileIndex tile, Track track);
00042 
00050 static inline bool HasReservedTracks(TileIndex tile, TrackBits tracks)
00051 {
00052   return (GetReservedTrackbits(tile) & tracks) != TRACK_BIT_NONE;
00053 }
00054 
00055 #endif /* PBS_H */