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src/track_func.h
branchNewGRF_ports
changeset 10724 68a692eacf22
parent 6878 7d1ff2f621c7
equal deleted inserted replaced
10349:ff900a23e102 10724:68a692eacf22 
    21  */
 
    21  */
 
    22 static inline Track AxisToTrack(Axis a)
 
    22 static inline Track AxisToTrack(Axis a)
 
    23 {
 
    23 {
 
    24 	return (Track)a;
 
    24 	return (Track)a;
 
    25 }
 
    25 }
 
    26 
       
    27 
       
    28 
    26 
    29 /**
 
    27 /**
 
    30  * Maps a Track to the corresponding TrackBits value
 
    28  * Maps a Track to the corresponding TrackBits value
 
    31  * @param track the track to convert
 
    29  * @param track the track to convert
 
    32  * @return the converted TrackBits value of the track
 
    30  * @return the converted TrackBits value of the track
 
   275 
   273 
   276 /**
 
   274 /**
 
   277  * Converts TrackBits to TrackdirBits while allowing both directions.
 
   275  * Converts TrackBits to TrackdirBits while allowing both directions.
 
   278  *
 
   276  *
 
   279  * @param bits The TrackBits
 
   277  * @param bits The TrackBits
 
   280  * @return The TrackDirBits containing of bits in both directions.
 
   278  * @return The TrackdirBits containing of bits in both directions.
 
   281  */
 
   279  */
 
   282 static inline TrackdirBits TrackBitsToTrackdirBits(TrackBits bits)
 
   280 static inline TrackdirBits TrackBitsToTrackdirBits(TrackBits bits)
 
   283 {
 
   281 {
 
   284 	return (TrackdirBits)(bits * 0x101);
 
   282 	return (TrackdirBits)(bits * 0x101);
 
   285 }
 
   283 }
 
   434 	extern const Trackdir _track_direction_to_trackdir[TRACK_END][DIR_END];
 
   432 	extern const Trackdir _track_direction_to_trackdir[TRACK_END][DIR_END];
 
   435 	return _track_direction_to_trackdir[track][dir];
 
   433 	return _track_direction_to_trackdir[track][dir];
 
   436 }
 
   434 }
 
   437 
   435 
   438 /**
 
   436 /**
 
       
   437  * Maps a (4-way) direction to the diagonal track incidating with that diagdir
 
       
   438  *
 
       
   439  * @param diagdir The direction
 
       
   440  * @return The resulting Track
 
       
   441  */
 
       
   442 static inline Track DiagDirToDiagTrack(DiagDirection diagdir)
 
       
   443 {
 
       
   444 	return (Track)(diagdir & 1);
 
       
   445 }
 
       
   446 
       
   447 /**
 
       
   448  * Maps a (4-way) direction to the diagonal track bits incidating with that diagdir
 
       
   449  *
 
       
   450  * @param diagdir The direction
 
       
   451  * @return The resulting TrackBits
 
       
   452  */
 
       
   453 static inline TrackBits DiagDirToDiagTrackBits(DiagDirection diagdir)
 
       
   454 {
 
       
   455 	return TrackToTrackBits(DiagDirToDiagTrack(diagdir));
 
       
   456 }
 
       
   457 
       
   458 /**
 
   439  * Maps a (4-way) direction to the diagonal trackdir that runs in that
 
   459  * Maps a (4-way) direction to the diagonal trackdir that runs in that
 
   440  * direction.
 
   460  * direction.
 
   441  *
 
   461  *
 
   442  * @param diagdir The direction
 
   462  * @param diagdir The direction
 
   443  * @return The resulting Trackdir direction
 
   463  * @return The resulting Trackdir direction
 
   444  */
 
   464  */
 
   445 static inline Trackdir DiagdirToDiagTrackdir(DiagDirection diagdir)
 
   465 static inline Trackdir DiagDirToDiagTrackdir(DiagDirection diagdir)
 
   446 {
 
   466 {
 
   447 	extern const Trackdir _dir_to_diag_trackdir[DIAGDIR_END];
 
   467 	extern const Trackdir _dir_to_diag_trackdir[DIAGDIR_END];
 
   448 	return _dir_to_diag_trackdir[diagdir];
 
   468 	return _dir_to_diag_trackdir[diagdir];
 
   449 }
 
   469 }
 
   450 
   470
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