public void ShouldRotateCorrectly()
{
var initial = new GridPoint(10, 20);
initial.RotateAroundOrigin(4).Should().Be(initial);
initial.RotateAroundOrigin(-4).Should().Be(initial);
initial.RotateAroundOrigin(2).Should().Be(new GridPoint(-10, -20));
}
// public int Facing;
private void ApplyRotation(int degrees)
{
WaypointPosition = WaypointPosition.RotateAroundOrigin(degrees / 90);
}