void UpdateRotation()
{
if (Input.GetAxisRaw ("Horizontal") > 0)
angle = 30;
else if (Input.GetAxisRaw ("Horizontal") < 0)
angle = 180 - 30;
else if(Input.GetAxisRaw("Vertical") > 0)
angle = 90;
force = Quaternion.Euler (0, 0, angle) * standardForce;
}