--- a/tile.h	Sun May 07 07:01:48 2006 +0000
+++ b/tile.h	Sun May 07 07:55:05 2006 +0000
@@ -30,6 +30,7 @@
 Slope GetTileh(uint n, uint w, uint e, uint s, uint *h);
 Slope GetTileSlope(TileIndex tile, uint *h);
 uint GetTileZ(TileIndex tile);
+uint GetTileMaxZ(TileIndex tile);
 
 static inline bool CorrectZ(Slope tileh)
 {