author | truebrain |
Fri, 13 Jun 2008 13:07:31 +0000 | |
branch | noai |
changeset 10952 | d16212cc2394 |
parent 10645 | 8cbdb511a674 |
permissions | -rw-r--r-- |
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/* $Id$ */ |
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/** @file signal_func.h Functions related to signals. */ |
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#ifndef SIGNAL_FUNC_H |
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#define SIGNAL_FUNC_H |
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#include "track_type.h" |
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#include "tile_type.h" |
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#include "direction_type.h" |
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#include "track_type.h" |
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#include "player_type.h" |
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/** |
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* Maps a trackdir to the bit that stores its status in the map arrays, in the |
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* direction along with the trackdir. |
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*/ |
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static inline byte SignalAlongTrackdir(Trackdir trackdir) |
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{ |
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extern const byte _signal_along_trackdir[TRACKDIR_END]; |
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return _signal_along_trackdir[trackdir]; |
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} |
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/** |
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* Maps a trackdir to the bit that stores its status in the map arrays, in the |
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* direction against the trackdir. |
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*/ |
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static inline byte SignalAgainstTrackdir(Trackdir trackdir) |
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{ |
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extern const byte _signal_against_trackdir[TRACKDIR_END]; |
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return _signal_against_trackdir[trackdir]; |
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} |
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/** |
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* Maps a Track to the bits that store the status of the two signals that can |
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* be present on the given track. |
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*/ |
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static inline byte SignalOnTrack(Track track) |
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{ |
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extern const byte _signal_on_track[TRACK_END]; |
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return _signal_on_track[track]; |
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} |
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/** State of the signal segment */ |
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enum SigSegState { |
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SIGSEG_FREE, ///< Free and has no pre-signal exits or at least one green exit |
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SIGSEG_FULL, ///< Occupied by a train |
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}; |
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SigSegState UpdateSignalsOnSegment(TileIndex tile, DiagDirection side, Owner owner); |
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void SetSignalsOnBothDir(TileIndex tile, Track track, Owner owner); |
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void AddTrackToSignalBuffer(TileIndex tile, Track track, Owner owner); |
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void AddSideToSignalBuffer(TileIndex tile, DiagDirection side, Owner owner); |
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void UpdateSignalsInBuffer(); |
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#endif /* SIGNAL_FUNC_H */ |