(svn r19056) -Add: [NewGRF] Action 3/2/1 (i.e. new graphics) support for rail types. (To be documented...)

src/newgrf_spritegroup.h

@@ -339,6 +339,9 @@ struct ResolverObject {
 			uint8 count;
 			uint8 station_size;
 		} generic;
+		struct {
+			TileIndex tile;
+		} routes;
 	} u;
 
 	uint32 (*GetRandomBits)(const struct ResolverObject*);