rubidium@6872: /* $Id$ */
rubidium@6872: 
rubidium@6872: /** @file signal_func.h Functions related to signals. */
rubidium@6872: 
rubidium@6872: #ifndef SIGNAL_FUNC_H
rubidium@6872: #define SIGNAL_FUNC_H
rubidium@6872: 
rubidium@6872: #include "track_type.h"
rubidium@6872: #include "tile_type.h"
rubidium@6872: #include "direction_type.h"
rubidium@6872: #include "track_type.h"
rubidium@6872: #include "player_type.h"
rubidium@6872: 
rubidium@6872: /**
rubidium@6872:  * Maps a trackdir to the bit that stores its status in the map arrays, in the
rubidium@6872:  * direction along with the trackdir.
rubidium@6872:  */
rubidium@6872: static inline byte SignalAlongTrackdir(Trackdir trackdir)
rubidium@6872: {
rubidium@6872: 	extern const byte _signal_along_trackdir[TRACKDIR_END];
rubidium@6872: 	return _signal_along_trackdir[trackdir];
rubidium@6872: }
rubidium@6872: 
rubidium@6872: /**
rubidium@6872:  * Maps a trackdir to the bit that stores its status in the map arrays, in the
rubidium@6872:  * direction against the trackdir.
rubidium@6872:  */
rubidium@6872: static inline byte SignalAgainstTrackdir(Trackdir trackdir)
rubidium@6872: {
rubidium@6872: 	extern const byte _signal_against_trackdir[TRACKDIR_END];
rubidium@6872: 	return _signal_against_trackdir[trackdir];
rubidium@6872: }
rubidium@6872: 
rubidium@6872: /**
rubidium@6872:  * Maps a Track to the bits that store the status of the two signals that can
rubidium@6872:  * be present on the given track.
rubidium@6872:  */
rubidium@6872: static inline byte SignalOnTrack(Track track)
rubidium@6872: {
rubidium@6872: 	extern const byte _signal_on_track[TRACK_END];
rubidium@6872: 	return _signal_on_track[track];
rubidium@6872: }
rubidium@6872: 
rubidium@6872: bool UpdateSignalsOnSegment(TileIndex tile, DiagDirection side, Owner owner);
rubidium@6872: void SetSignalsOnBothDir(TileIndex tile, Track track, Owner owner);
rubidium@6872: void AddTrackToSignalBuffer(TileIndex tile, Track track, Owner owner);
rubidium@6872: void AddSideToSignalBuffer(TileIndex tile, DiagDirection side, Owner owner);
rubidium@6872: void UpdateSignalsInBuffer();
rubidium@6872: 
rubidium@6872: #endif /* SIGNAL_FUNC_H */