(svn r3698) Add GetCrossingRailBits() and ComplementRoadBits(). Simplify the code by using them

1 files changed, 11 insertions, 0 deletions

diff --git a/road.h b/road.h
index 92e9742d2..7ad38d90c 100644
--- a/road.h
+++ b/road.h
@@ -17,6 +17,11 @@ typedef enum RoadBits {
 	ROAD_ALL = ROAD_X  | ROAD_Y
 } RoadBits;
 
+static inline RoadBits ComplementRoadBits(RoadBits r)
+{
+	return ROAD_ALL ^ r;
+}
+
 static inline RoadBits GetRoadBits(TileIndex tile)
 {
 	return GB(_m[tile].m5, 0, 4);
@@ -27,6 +32,12 @@ static inline RoadBits GetCrossingRoadBits(TileIndex tile)
 	return _m[tile].m5 & 8 ? ROAD_Y : ROAD_X;
 }
 
+static inline TrackBits GetCrossingRailBits(TileIndex tile)
+{
+	return _m[tile].m5 & 8 ? TRACK_BIT_X : TRACK_BIT_Y;
+}
+
+
 typedef enum RoadType {
 	ROAD_NORMAL,
 	ROAD_CROSSING,