Function RemoveOrderFromAllVehicles

src/order_cmd.cpp:1756–1813

* Removes an order from all vehicles. Triggers when, say, a station is removed. * @param type The type of the order (OT_GOTO_[STATION|DEPOT|WAYPOINT]). * @param destination The destination. Can be a StationID, DepotID or WaypointID. * @param hangar Only used for airports in the destination. * When false, remove airport and hangar orders. * When true, remove either

 *               When true, remove either airport or hangar order.
 */
void RemoveOrderFromAllVehicles(OrderType type, DestinationID destination, bool hangar)
{
	/* Aircraft have StationIDs for depot orders and never use DepotIDs
	 * This fact is handled specially below
	 */

	/* Go through all vehicles */
	for (Vehicle *v : Vehicle::Iterate()) {
		if ((v->type == VEH_AIRCRAFT && v->current_order.IsType(OT_GOTO_DEPOT) && !hangar ? OT_GOTO_STATION : v->current_order.GetType()) == type &&
				(!hangar || v->type == VEH_AIRCRAFT) && v->current_order.GetDestination() == destination) {
			v->current_order.MakeDummy();
			SetWindowDirty(WC_VEHICLE_VIEW, v->index);
		}

		if (v->orders == nullptr) continue;

		/* Clear the order from the order-list */
		for (VehicleOrderID id = 0, next_id = 0; id < v->GetNumOrders(); id = next_id) {
			next_id = id + 1;
			Order *order = v->orders->GetOrderAt(id);
			OrderType ot = order->GetType();
			if (ot == OT_GOTO_DEPOT && order->GetDepotActionType().Test(OrderDepotActionFlag::NearestDepot)) continue;
			if (ot == OT_GOTO_DEPOT && hangar && v->type != VEH_AIRCRAFT) continue; // Not an aircraft? Can't have a hangar order.
			if (ot == OT_IMPLICIT || (v->type == VEH_AIRCRAFT && ot == OT_GOTO_DEPOT && !hangar)) ot = OT_GOTO_STATION;
			if (ot == type && order->GetDestination() == destination) {
				/* We want to clear implicit orders, but we don't want to make them
				 * dummy orders. They should just vanish. Also check the actual order
				 * type as ot is currently OT_GOTO_STATION. */
				if (order->IsType(OT_IMPLICIT)) {
					DeleteOrder(v, id);
					next_id = id;
					continue;
				}

				/* Clear wait time */
				v->orders->UpdateTotalDuration(-order->GetWaitTime());
				if (order->IsWaitTimetabled()) {
					v->orders->UpdateTimetableDuration(-order->GetTimetabledWait());
					order->SetWaitTimetabled(false);
				}
				order->SetWaitTime(0);

				/* Clear order, preserving travel time */
				bool travel_timetabled = order->IsTravelTimetabled();
				order->MakeDummy();
				order->SetTravelTimetabled(travel_timetabled);

				for (const Vehicle *w = v->FirstShared(); w != nullptr; w = w->NextShared()) {
					/* In GUI, simulate by removing the order and adding it back */
					InvalidateVehicleOrder(w, id | (INVALID_VEH_ORDER_ID << 8));
					InvalidateVehicleOrder(w, (INVALID_VEH_ORDER_ID << 8) | id);
				}
			}
		}
	}

	OrderBackup::RemoveOrder(type, destination, hangar);
}