--- a/map.c	Sat May 06 13:24:06 2006 +0200
+++ b/map.c	Sat May 06 15:42:06 2006 +0200
@@ -28,13 +28,11 @@
 	return TRUE;
 }
 
-int is_new_map(struct Map maps[], int depth)
+int is_new_map(const struct Map maps[], const int depth)
 {
-	struct Map *m;
+	const struct Map *m = &maps[depth];
 	int i;
-	extern int max_depth;
-
-	m = &maps[depth];
+	extern int max_depth; 
 
 	for(i=0; i<max_depth; i++)
 	{