/// <summary>
/// Gets the Direction that this Unit would need to turn to face the given direction.
/// Note that this does not modify the Unit in any way, and should be used for analytic purposes only.
/// This method takes mirroring into account - use with caution
/// </summary>
/// <param name="to">the CardinalDirection that this Unit would face after turning</param>
/// <returns>the RelativeDirection to turn to face the Direction</returns>
public RelativeDirection Cross(CardinalDirection to)
{
var cross = Facing.Cross(to);
return(Mirrored ? cross.Mirror() : cross);
}