/// <summary>
/// Adds a drone to the port - starts working immediately
/// </summary>
/// <param name="drone"></param>
/// <returns>id of drone</returns>
public int AddDrone(IDrone drone)
{
drone.SetPort(this);
var displayObject = Communicaiton.Instance.GetDisplayObjectAt(drone.CurrentX, drone.CurrentY);
var insertedDrone = _drones.Add(new DroneWithPosition(drone, displayObject));
var waitingOrder = GetWaitingOrder();
if (waitingOrder != null)
{
drone.AddOrder(waitingOrder);
}
return(insertedDrone.Id);
}