/// if the sprite was dragged, return move amount in screen coordinates.
/// return the zero vector if dragging happened outside of the sprite
public Vector3 movementIfDragged()
{
if (input.touchCount > 0 && input.hasMoved(0))
{
var touch = input.GetTouch(0);
if (!sprite.Contains(Camera.main, touch.position))
{
return(Vector3.zero);
}
return(new Vector3(touch.deltaPosition.x, touch.deltaPosition.y, 0f));
}
return(Vector3.zero);
}
IList <Touch> touchesFor(ICollection <TouchPhase> phases)
{
var touches = new List <Touch>();
for (int i = 0; i < input.touchCount; i++)
{
var touch = input.GetTouch(i);
if (phases.Contains(touch.phase))
{
touches.Add(touch);
}
}
return(touches);
}