Function FindDeletedWaypointCloseTo

src/waypoint_cmd.cpp:80–97

* Find a deleted waypoint close to a tile. * @param tile to search from * @param str the string to get the 'type' of * @param cid previous owner of the waypoint * @param is_road whether to find a road waypoint * @return the deleted nearby waypoint */

 * @return the deleted nearby waypoint
 */
static Waypoint *FindDeletedWaypointCloseTo(TileIndex tile, StringID str, CompanyID cid, bool is_road)
{
	Waypoint *best = nullptr;
	uint thres = 8;

	for (Waypoint *wp : Waypoint::Iterate()) {
		if (!wp->IsInUse() && wp->string_id == str && wp->owner == cid && HasBit(wp->waypoint_flags, WPF_ROAD) == is_road) {
			uint cur_dist = DistanceManhattan(tile, wp->xy);

			if (cur_dist < thres) {
				thres = cur_dist;
				best = wp;
			}
		}
	}

	return best;
}

/**
 * Get the axis for a new rail waypoint. This means that if it is a valid