void Start()
{
shadowController = GetComponentInChildren <ShadowController> ();
shadowBox = dropShadow.GetComponent <BoxCollider2D> ();
boxCollider = GetComponent <BoxCollider2D> ();
boxRB = GetComponent <Rigidbody2D> ();
// CalculateShadowTrajectory ();
shadowController.SetVelocity(Vector3.forward * boxRB.velocity.y);
shadowController.Drop();
strikeTime = Time.time + airTime;
midPointTime = strikeTime - (airTime * 0.5f);
grounded = false;
}
// negative airTime to ignores trajectory of a parabola
public void Throw(float verticalSpeed, float airTime) {
shadowController.SetVelocity(Vector3.forward * verticalSpeed);
shadowController.SetKinematic (false);
shadowController.SetTrajectory (airTime);
}