Method SelectEngine

src/build_vehicle_gui.cpp:1302–1330

	}

	void SelectEngine(EngineID engine)
	{
		CargoType cargo = this->cargo_filter_criteria;
		if (cargo == CargoFilterCriteria::CF_ANY || cargo == CargoFilterCriteria::CF_ENGINES || cargo == CargoFilterCriteria::CF_NONE) cargo = INVALID_CARGO;

		this->sel_engine = engine;
		this->SetBuyVehicleText();

		if (this->sel_engine == EngineID::Invalid()) return;

		const Engine *e = Engine::Get(this->sel_engine);

		if (!this->listview_mode) {
			/* Query for cost and refitted capacity */
			auto [ret, veh_id, refit_capacity, refit_mail, cargo_capacities] = Command<CMD_BUILD_VEHICLE>::Do(DoCommandFlag::QueryCost, TileIndex(this->window_number), this->sel_engine, true, cargo, INVALID_CLIENT_ID);
			if (ret.Succeeded()) {
				this->te.cost          = ret.GetCost() - e->GetCost();
				this->te.capacity      = refit_capacity;
				this->te.mail_capacity = refit_mail;
				this->te.cargo         = !IsValidCargoType(cargo) ? e->GetDefaultCargoType() : cargo;
				this->te.all_capacities = cargo_capacities;
				return;
			}
		}

		/* Purchase test was not possible or failed, fill in the defaults instead. */
		this->te.cost     = 0;
		this->te.FillDefaultCapacities(e);
	}

	void OnInit() override
	{