src/signal_func.h

   1 /* $Id$ */
   2
   3 /*
   4  * This file is part of OpenTTD.
   5  * 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.
   6  * 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.
   7  * 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/>.
   8  */
   9
  10 /** @file signal_func.h Functions related to signals. */
  11
  12 #ifndef SIGNAL_FUNC_H
  13 #define SIGNAL_FUNC_H
  14
  15 #include "map/coord.h"
  16 #include "track_type.h"
  17 #include "direction_type.h"
  18 #include "company_type.h"
  19 #include "pathfinder/pos.h"
  20
  21 /** State of the signal segment */
  22 enum SigSegState {
  23         SIGSEG_NONE,    ///< There was no segment (not usually a returned value)
  24         SIGSEG_FREE,    ///< Free and has no pre-signal exits or at least one green exit
  25         SIGSEG_FULL,    ///< Occupied by a train
  26         SIGSEG_PBS,     ///< Segment is a PBS segment
  27 };
  28
  29 bool IsSignalBufferEmpty();
  30
  31 void AddTrackToSignalBuffer(TileIndex tile, Track track, Owner owner);
  32 void AddSideToSignalBuffer(TileIndex tile, DiagDirection side, Owner owner);
  33 void AddDepotToSignalBuffer(TileIndex tile, Owner owner);
  34 void AddBridgeToSignalBuffer(TileIndex tile, Owner owner);
  35 void AddTunnelToSignalBuffer(TileIndex tile, Owner owner);
  36 void AddPosToSignalBuffer(const RailPathPos &pos, Owner owner);
  37 SigSegState UpdateSignalsInBuffer();
  38
  39 #endif /* SIGNAL_FUNC_H */