public void MoveBackward()
{
switch (Orientation)
{
case Direction.North: Location = Location.AdjustYBy(-1); break;
case Direction.East: Location = Location.AdjustXBy(-1); break;
case Direction.South: Location = Location.AdjustYBy(1); break;
case Direction.West: Location = Location.AdjustXBy(1); break;
}
}