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author | matthijs <matthijs@openttd.org> | 2005-06-17 11:30:50 +0000 |
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committer | matthijs <matthijs@openttd.org> | 2005-06-17 11:30:50 +0000 |
commit | 958df2b229ed8c8164cdddbdd7a6b72c76c00906 (patch) | |
tree | 0854c895bc30963920a6dafa0f80ff9ab014edb2 /rail.h | |
parent | 3c133f1f539622f622700e1c704e0d84718cc1b5 (diff) | |
download | openttd-958df2b229ed8c8164cdddbdd7a6b72c76c00906.tar.xz |
(svn r2454) * Codechange: Move #include "stdafx.h" and "openttd.h" from rail.h to rail.c
* Codechange: Move declaration of lookup arrays into the functions that need them. This doesn't pollute the global namespace with the array names.
* Add: rail.h to the openttd.vcproj and openttd.dsp for MSVC.
Diffstat (limited to 'rail.h')
-rw-r--r-- | rail.h | 83 |
1 files changed, 52 insertions, 31 deletions
@@ -1,8 +1,6 @@ #ifndef RAIL_H #define RAIL_H -#include "stdafx.h" -#include "openttd.h" #include "tile.h" /* @@ -95,7 +93,8 @@ typedef enum Trackdirs { TRACKDIR_LOWER_E = 3, TRACKDIR_LEFT_S = 4, TRACKDIR_RIGHT_S = 5, - /* Note the two missing values here. This enables trackdir -> track conversion by doing (trackdir & 7) */ + /* Note the two missing values here. This enables trackdir -> track + * conversion by doing (trackdir & 7) */ TRACKDIR_DIAG1_SW = 8, TRACKDIR_DIAG2_NW = 9, TRACKDIR_UPPER_W = 10, @@ -136,12 +135,17 @@ typedef enum SignalStates { } SignalState; +/** + * Maps a Trackdir to the corresponding TrackdirBits value + */ +static inline TrackdirBits TrackdirToTrackdirBits(Trackdir trackdir) { return (TrackdirBits)(1 << trackdir); } + /* * These functions check the validity of Tracks and Trackdirs. assert against * them when convenient. */ static inline bool IsValidTrack(Track track) { return track < TRACK_END; } -static inline bool IsValidTrackdir(Trackdir trackdir) { return trackdir < TRACKDIR_END; } +static inline bool IsValidTrackdir(Trackdir trackdir) { return (TrackdirToTrackdirBits(trackdir) & TRACKDIR_BIT_MASK) != 0; } /* * Functions to map tracks to the corresponding bits in the signal @@ -160,15 +164,19 @@ static inline byte SignalAlongTrackdir(Trackdir trackdir) {return _signal_along_ * Maps a trackdir to the bit that stores its status in the map arrays, in the * direction against the trackdir. */ -extern const byte _signal_against_trackdir[TRACKDIR_END]; -static inline byte SignalAgainstTrackdir(Trackdir trackdir) { return _signal_against_trackdir[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. */ -extern const byte _signal_on_track[TRACK_END]; -static inline byte SignalOnTrack(Track track) { return _signal_on_track[track]; } +static inline byte SignalOnTrack(Track track) { + extern const byte _signal_on_track[TRACK_END]; + return _signal_on_track[track]; +} /* * Some functions to query rail tiles @@ -247,13 +255,10 @@ static inline bool HasTrack(TileIndex tile, Track track) /** * Maps a trackdir to the reverse trackdir. */ -extern const Trackdir _reverse_trackdir[TRACKDIR_END]; -static inline Trackdir ReverseTrackdir(Trackdir trackdir) { return _reverse_trackdir[trackdir]; } - -/** - * Maps a Trackdir to the corresponding TrackdirBits value - */ -static inline TrackdirBits TrackdirToTrackdirBits(Trackdir trackdir) { return (TrackdirBits)(1 << trackdir); } +static inline Trackdir ReverseTrackdir(Trackdir trackdir) { + extern const Trackdir _reverse_trackdir[TRACKDIR_END]; + return _reverse_trackdir[trackdir]; +} /* * Maps a Track to the corresponding TrackBits value @@ -280,42 +285,54 @@ static inline TrackdirBits TrackToTrackdirBits(Track track) { Trackdir td = Trac * ahead. This will be the same trackdir for diagonal trackdirs, but a * different (alternating) one for straight trackdirs */ -extern const Trackdir _next_trackdir[TRACKDIR_END]; -static inline Trackdir NextTrackdir(Trackdir trackdir) { return _next_trackdir[trackdir]; } +static inline Trackdir NextTrackdir(Trackdir trackdir) { + extern const Trackdir _next_trackdir[TRACKDIR_END]; + return _next_trackdir[trackdir]; +} /** * Maps a track to all tracks that make 90 deg turns with it. */ -extern const TrackBits _track_crosses_tracks[TRACK_END]; -static inline TrackBits TrackCrossesTracks(Track track) { return _track_crosses_tracks[track]; } +static inline TrackBits TrackCrossesTracks(Track track) { + extern const TrackBits _track_crosses_tracks[TRACK_END]; + return _track_crosses_tracks[track]; +} /** * Maps a trackdir to the (4-way) direction the tile is exited when following * that trackdir. */ -extern const DiagDirection _trackdir_to_exitdir[TRACKDIR_END]; -static inline DiagDirection TrackdirToExitdir(Trackdir trackdir) { return _trackdir_to_exitdir[trackdir]; } +static inline DiagDirection TrackdirToExitdir(Trackdir trackdir) { + extern const DiagDirection _trackdir_to_exitdir[TRACKDIR_END]; + return _trackdir_to_exitdir[trackdir]; +} /** * Maps a track and an (4-way) dir to the trackdir that represents the track * with the exit in the given direction. */ -extern const Trackdir _track_exitdir_to_trackdir[TRACK_END][DIAGDIR_END]; -static inline Trackdir TrackExitdirToTrackdir(Track track, DiagDirection diagdir) { return _track_exitdir_to_trackdir[track][diagdir]; } +static inline Trackdir TrackExitdirToTrackdir(Track track, DiagDirection diagdir) { + extern const Trackdir _track_exitdir_to_trackdir[TRACK_END][DIAGDIR_END]; + return _track_exitdir_to_trackdir[track][diagdir]; +} /** * Maps a track and a full (8-way) direction to the trackdir that represents * the track running in the given direction. */ -extern const Trackdir _track_direction_to_trackdir[TRACK_END][DIR_END]; -static inline Trackdir TrackDirectionToTrackdir(Track track, Direction dir) { return _track_direction_to_trackdir[track][dir]; } +static inline Trackdir TrackDirectionToTrackdir(Track track, Direction dir) { + extern const Trackdir _track_direction_to_trackdir[TRACK_END][DIR_END]; + return _track_direction_to_trackdir[track][dir]; +} /** * Maps a (4-way) direction to the diagonal trackdir that runs in that * direction. */ -extern const Trackdir _dir_to_diag_trackdir[DIAGDIR_END]; -static inline Trackdir DiagdirToDiagTrackdir(DiagDirection diagdir) { return _dir_to_diag_trackdir[diagdir]; } +static inline Trackdir DiagdirToDiagTrackdir(DiagDirection diagdir) { + extern const Trackdir _dir_to_diag_trackdir[DIAGDIR_END]; + return _dir_to_diag_trackdir[diagdir]; +} /** * Maps a trackdir to the trackdirs that can be reached from it (ie, when @@ -329,14 +346,18 @@ static inline TrackdirBits TrackdirReachesTrackdirs(Trackdir trackdir) { return /** * Maps a trackdir to all trackdirs that make 90 deg turns with it. */ -extern const TrackdirBits _track_crosses_trackdirs[TRACKDIR_END]; -static inline TrackdirBits TrackdirCrossesTrackdirs(Trackdir trackdir) { return _track_crosses_trackdirs[TrackdirToTrack(trackdir)]; } +static inline TrackdirBits TrackdirCrossesTrackdirs(Trackdir trackdir) { + extern const TrackdirBits _track_crosses_trackdirs[TRACKDIR_END]; + return _track_crosses_trackdirs[TrackdirToTrack(trackdir)]; +} /** * Maps a (4-way) direction to the reverse. */ -extern const DiagDirection _reverse_diagdir[DIAGDIR_END]; -static inline DiagDirection ReverseDiagdir(DiagDirection diagdir) { return _reverse_diagdir[diagdir]; } +static inline DiagDirection ReverseDiagdir(DiagDirection diagdir) { + extern const DiagDirection _reverse_diagdir[DIAGDIR_END]; + return _reverse_diagdir[diagdir]; +} /* Checks if a given Track is diagonal */ static inline bool IsDiagonalTrack(Track track) { return (track == TRACK_DIAG1) || (track == TRACK_DIAG2); } |