public void Execute(IRover rover)
{
switch (rover.Orientation)
{
case Directions.East:
rover.AddToX(1);
break;
case Directions.West:
rover.AddToX(-1);
break;
case Directions.South:
rover.AddToY(-1);
break;
case Directions.North:
rover.AddToY(1);
break;
default:
break;
}
}