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signal_func.h
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1 /* $Id: signal_func.h 17248 2009-08-21 20:21:05Z rubidium $ */
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
12 #ifndef SIGNAL_FUNC_H
13 #define SIGNAL_FUNC_H
14
15 #include "track_type.h"
16 #include "tile_type.h"
17 #include "direction_type.h"
18 #include "company_type.h"
19
24 static inline byte SignalAlongTrackdir(Trackdir trackdir)
25 {
26 extern const byte _signal_along_trackdir[TRACKDIR_END];
27 return _signal_along_trackdir[trackdir];
28 }
29
34 static inline byte SignalAgainstTrackdir(Trackdir trackdir)
35 {
36 extern const byte _signal_against_trackdir[TRACKDIR_END];
37 return _signal_against_trackdir[trackdir];
38 }
39
44 static inline byte SignalOnTrack(Track track)
45 {
46 extern const byte _signal_on_track[TRACK_END];
47 return _signal_on_track[track];
48 }
49
51 enum SigSegState {
52 SIGSEG_FREE,
53 SIGSEG_FULL,
54 SIGSEG_PBS,
55 };
56
57 SigSegState UpdateSignalsOnSegment(TileIndex tile, DiagDirection side, Owner owner);
58 void SetSignalsOnBothDir(TileIndex tile, Track track, Owner owner);
59 void AddTrackToSignalBuffer(TileIndex tile, Track track, Owner owner);
60 void AddSideToSignalBuffer(TileIndex tile, DiagDirection side, Owner owner);
61 void UpdateSignalsInBuffer();
62
63 #endif /* SIGNAL_FUNC_H */