--- a/src/tunnel_map.h	Thu Jun 21 17:18:33 2007 +0000
+++ b/src/tunnel_map.h	Thu Jun 21 17:25:17 2007 +0000
@@ -87,6 +87,7 @@
 
 TileIndex GetOtherTunnelEnd(TileIndex);
 bool IsTunnelInWay(TileIndex, uint z);
+bool IsTunnelInWayDir(TileIndex tile, uint z, DiagDirection dir);
 
 
 /**