// wake the sphere
void PushStart(InputHandler input)
{
// Remove the any key listener
InputEvent.RemoveListener(anyKeyListener);
// Register a listener for more from the same keyboard key
key = ((InputHandlerKey)input).key;
InputEvent.AddListenerKey(key, PushUp, null);
// Register a listener function for pointer event (click or touch start)
InputEvent.AddListenerTouchOrMouse(PushUp, null, null);
// wake the ball
started = true;
sphere.GetComponent <Rigidbody>().AddForce(Vector3.right * 5, ForceMode.VelocityChange);
}