1 files changed, 6 insertions, 0 deletions
diff --git a/tile.h b/tile.h
index e02c9e443..bb5698f4c 100644
--- a/tile.h
+++ b/tile.h
@@ -44,6 +44,12 @@ typedef enum DiagonalDirections {
 	INVALID_DIAGDIR = 0xFF,
 } DiagDirection;
 
+/* the 2 axis */
+typedef enum Axis {
+	AXIS_X = 0,
+	AXIS_Y = 1
+} Axis;
+
 void SetMapExtraBits(TileIndex tile, byte flags);
 uint GetMapExtraBits(TileIndex tile);