(svn r4348) Move IsLevelCrossing() from rail.h to road_map.h

rail.h

@@ -428,13 +428,6 @@ static inline SignalState GetSignalState(TileIndex tile, Trackdir trackdir)
  */
 RailType GetTileRailType(TileIndex tile, Trackdir trackdir);
 
-/**
- * Returns whether the given tile is a level crossing.
- */
-static inline bool IsLevelCrossing(TileIndex tile)
-{
-	return (_m[tile].m5 & 0xF0) == 0x10;
-}
 
 /**
  * Gets the transport type of the given track on the given crossing tile.

road_map.h

@@ -40,6 +40,11 @@ static inline RoadType GetRoadType(TileIndex t)
 	return GB(_m[t].m5, 4, 4);
 }
 
+static inline bool IsLevelCrossing(TileIndex t)
+{
+	return GetRoadType(t) == ROAD_CROSSING;
+}
+
 
 static inline RoadBits GetRoadBits(TileIndex t)
 {