public void dropPosCon(EObject obj)
{
Vector3 newPosition = this.transform.position;
this.backpack.Remove(obj);
obj.gameObject.SetActive(true);
newPosition.y += 2.5f;
obj.setPosition(newPosition);
obj.rigidbody.AddForce(new Vector3(20, 20, 20)); //TODO: cambiar esta fruta
}