Method HandlePathfindingResult

src/vehicle.cpp:762–793

* Handle the pathfinding result, especially the lost status. * If the vehicle is now lost and wasn't previously fire an * event to the AIs and a news message to the user. If the * vehicle is not lost anymore remove the news message. * @param path_found Whether the vehicle has a path to its destination. */

 * @param path_found Whether the vehicle has a path to its destination.
 */
void Vehicle::HandlePathfindingResult(bool path_found)
{
	if (path_found) {
		/* Route found, is the vehicle marked with "lost" flag? */
		if (!this->vehicle_flags.Test(VehicleFlag::PathfinderLost)) return;

		/* Clear the flag as the PF's problem was solved. */
		this->vehicle_flags.Reset(VehicleFlag::PathfinderLost);
		SetWindowWidgetDirty(WC_VEHICLE_VIEW, this->index, WID_VV_START_STOP);
		InvalidateWindowClassesData(GetWindowClassForVehicleType(this->type));
		/* Delete the news item. */
		DeleteVehicleNews(this->index, AdviceType::VehicleLost);
		return;
	}

	/* Were we already lost? */
	if (this->vehicle_flags.Test(VehicleFlag::PathfinderLost)) return;

	/* It is first time the problem occurred, set the "lost" flag. */
	this->vehicle_flags.Set(VehicleFlag::PathfinderLost);
	SetWindowWidgetDirty(WC_VEHICLE_VIEW, this->index, WID_VV_START_STOP);
	InvalidateWindowClassesData(GetWindowClassForVehicleType(this->type));

	/* Unbunching data is no longer valid. */
	this->ResetDepotUnbunching();

	/* Notify user about the event. */
	AI::NewEvent(this->owner, new ScriptEventVehicleLost(this->index));
	if (_settings_client.gui.lost_vehicle_warn && this->owner == _local_company) {
		AddVehicleAdviceNewsItem(AdviceType::VehicleLost, GetEncodedString(STR_NEWS_VEHICLE_IS_LOST, this->index), this->index);
	}
}

/** Destroy all stuff that (still) needs the virtual functions to work properly */
void Vehicle::PreDestructor()