(svn r13940) -Add [YAPP]: YAPF is now able to reserve the found path. (michi_cc)

1 files changed, 15 insertions, 0 deletions

diff --git a/src/rail_map.h b/src/rail_map.h
index 805915718..0937da730 100644
--- a/src/rail_map.h
+++ b/src/rail_map.h
@@ -534,6 +534,21 @@ static inline bool HasPbsSignalOnTrackdir(TileIndex tile, Trackdir td)
 		IsPbsSignal(GetSignalType(tile, TrackdirToTrack(td)));
 }
 
+/**
+ * Is a one-way signal blocking the trackdir? A one-way signal on the
+ * trackdir against will block, but signals on both trackdirs won't.
+ * @param tile the tile to check
+ * @param td the trackdir to check
+ */
+static inline bool HasOnewaySignalBlockingTrackdir(TileIndex tile, Trackdir td)
+{
+	return
+		IsTileType(tile, MP_RAILWAY) &&
+		HasSignalOnTrackdir(tile, ReverseTrackdir(td)) &&
+		!HasSignalOnTrackdir(tile, td) &&
+		IsOnewaySignal(tile, TrackdirToTrack(td));
+}
+
 
 /**
  * Return the rail type of tile, or INVALID_RAILTYPE if this is no rail tile.