/* $Id$ */ /** @file signal_func.h Functions related to signals. */ #ifndef SIGNAL_FUNC_H #define SIGNAL_FUNC_H #include "track_type.h" #include "tile_type.h" #include "direction_type.h" #include "track_type.h" #include "player_type.h" /** * Maps a trackdir to the bit that stores its status in the map arrays, in the * direction along with the trackdir. */ static inline byte SignalAlongTrackdir(Trackdir trackdir) { extern const byte _signal_along_trackdir[TRACKDIR_END]; return _signal_along_trackdir[trackdir]; } /** * Maps a trackdir to the bit that stores its status in the map arrays, in the * direction against the trackdir. */ static inline byte SignalAgainstTrackdir(Trackdir trackdir) { extern const byte _signal_against_trackdir[TRACKDIR_END]; return _signal_against_trackdir[trackdir]; } /** * Maps a Track to the bits that store the status of the two signals that can * be present on the given track. */ static inline byte SignalOnTrack(Track track) { extern const byte _signal_on_track[TRACK_END]; return _signal_on_track[track]; } /** State of the signal segment */ enum SigSegState { SIGSEG_FREE, ///< Free and has no pre-signal exits or at least one green exit SIGSEG_FULL, ///< Occupied by a train }; SigSegState UpdateSignalsOnSegment(TileIndex tile, DiagDirection side, Owner owner); void SetSignalsOnBothDir(TileIndex tile, Track track, Owner owner); void AddTrackToSignalBuffer(TileIndex tile, Track track, Owner owner); void AddSideToSignalBuffer(TileIndex tile, DiagDirection side, Owner owner); void UpdateSignalsInBuffer(); #endif /* SIGNAL_FUNC_H */