--- a/map.c	Thu Dec 16 11:36:57 2004 +0000
+++ b/map.c	Thu Dec 16 12:30:13 2004 +0000
@@ -2,6 +2,9 @@
 #include "ttd.h"
 #include "map.h"
 
+uint _map_log_x = TILE_X_BITS;
+uint _map_log_y = TILE_Y_BITS;
+
 byte _map_type_and_height[TILES_X * TILES_Y];
 byte _map5[TILES_X * TILES_Y];
 byte _map3_lo[TILES_X * TILES_Y];