extern double path_find_to(coord, coord);
extern double path_find(coord, coord, coord, coord, natid, int);
extern size_t path_find_route(char *, size_t, coord, coord, coord, coord);
+#ifdef PATH_FIND_DEBUG
+extern void path_find_visualize(coord, coord, coord, coord);
+#endif
#ifdef PATH_FIND_STATS
extern void path_find_print_stats(void);
#else