TileIndex tile;

	uint16 flags;

	uint16 next;

} TrackPathFinderLink;

typedef struct RememberData {

	uint16 cur_length;

	byte depth;

	byte pft_var6;

} RememberData;

struct TrackPathFinder {

	int num_links_left;

	TrackPathFinderLink *new_link;

	TPFEnumProc *enum_proc;

	void *userdata;

	RememberData rd;

	int the_dir;

	byte tracktype;