public void ActivateNextPlatform()
{
Platform platform = RequestPlatform().GetComponent <Platform>();
platformSize = platform.GetComponent <BoxCollider2D>().bounds.size;
platformSize.y = 0;//PARA EVITAR QUE SEA UN ESCALON -> todo en una misma linea
platform.transform.position = platformLastPos + platformSize;
platformLastPos = platform.transform.position;
platform.ActivateObstacle();
}