Function CmdChangeTimetable

src/timetable_cmd.cpp:133–217

* Change timetable data of an order. * @param flags Operation to perform. * @param veh Vehicle with the orders to change. * @param order_number Order index to modify. * @param mtf Timetable data to change (@see ModifyTimetableFlags) * @param data The data to modify as specified by \c mtf. * 0 to clear times, UINT16_MAX to clear speed limit. * @return the cost of this operation o

 * @return the cost of this operation or an error
 */
CommandCost CmdChangeTimetable(DoCommandFlags flags, VehicleID veh, VehicleOrderID order_number, ModifyTimetableFlags mtf, uint16_t data)
{
	Vehicle *v = Vehicle::GetIfValid(veh);
	if (v == nullptr || !v->IsPrimaryVehicle()) return CMD_ERROR;

	CommandCost ret = CheckOwnership(v->owner);
	if (ret.Failed()) return ret;

	Order *order = v->GetOrder(order_number);
	if (order == nullptr || order->IsType(OT_IMPLICIT)) return CMD_ERROR;

	if (mtf >= MTF_END) return CMD_ERROR;

	int wait_time   = order->GetWaitTime();
	int travel_time = order->GetTravelTime();
	int max_speed   = order->GetMaxSpeed();
	switch (mtf) {
		case MTF_WAIT_TIME:
			wait_time = data;
			break;

		case MTF_TRAVEL_TIME:
			travel_time = data;
			break;

		case MTF_TRAVEL_SPEED:
			max_speed = data;
			if (max_speed == 0) max_speed = UINT16_MAX; // Disable speed limit.
			break;

		default:
			NOT_REACHED();
	}

	if (wait_time != order->GetWaitTime()) {
		switch (order->GetType()) {
			case OT_GOTO_STATION:
				if (order->GetNonStopType().Test(OrderNonStopFlag::NoDestination)) return CommandCost(STR_ERROR_TIMETABLE_NOT_STOPPING_HERE);
				break;

			case OT_CONDITIONAL:
				break;

			default: return CommandCost(STR_ERROR_TIMETABLE_ONLY_WAIT_AT_STATIONS);
		}
	}

	if (travel_time != order->GetTravelTime() && order->IsType(OT_CONDITIONAL)) return CMD_ERROR;
	if (max_speed != order->GetMaxSpeed() && (order->IsType(OT_CONDITIONAL) || v->type == VEH_AIRCRAFT)) return CMD_ERROR;

	if (flags.Test(DoCommandFlag::Execute)) {
		switch (mtf) {
			case MTF_WAIT_TIME:
				/* Set time if changing the value or confirming an estimated time as timetabled. */
				if (wait_time != order->GetWaitTime() || (wait_time > 0 && !order->IsWaitTimetabled())) {
					ChangeTimetable(v, order_number, wait_time, MTF_WAIT_TIME, wait_time > 0);
				}
				break;