signal_func.h

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/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef SIGNAL_FUNC_H
#define SIGNAL_FUNC_H
 
#include "track_type.h"
#include "tile_type.h"
#include "direction_type.h"
#include "company_type.h"
 
inline uint8_t SignalAlongTrackdir(Trackdir trackdir)
{
  extern const uint8_t _signal_along_trackdir[TRACKDIR_END];
  return _signal_along_trackdir[trackdir];
}
 
inline uint8_t SignalAgainstTrackdir(Trackdir trackdir)
{
  extern const uint8_t _signal_against_trackdir[TRACKDIR_END];
  return _signal_against_trackdir[trackdir];
}
 
inline uint8_t SignalOnTrack(Track track)
{
  extern const uint8_t _signal_on_track[TRACK_END];
  return _signal_on_track[track];
}
 
enum SigSegState {
  SIGSEG_FREE,    
  SIGSEG_FULL,    
  SIGSEG_PBS,     
};
 
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 */