static const Depot *FindClosestShipDepot(const Vehicle *v, uint max_distance)
{
/* Find the closest depot */
const Depot *depot;
const Depot *best_depot = NULL;
/* If we don't have a maximum distance, i.e. distance = 0,
* we want to find any depot so the best distance of no
* depot must be more than any correct distance. On the
* other hand if we have set a maximum distance, any depot
* further away than max_distance can safely be ignored. */
uint best_dist = max_distance == 0 ? UINT_MAX : max_distance + 1;
FOR_ALL_DEPOTS(depot) {
TileIndex tile = depot->xy;
if (IsShipDepotTile(tile) && IsTileOwner(tile, v->owner)) {
uint dist = DistanceManhattan(tile, v->tile);
if (dist < best_dist) {
best_dist = dist;
best_depot = depot;
}
}
}
return best_depot;
}