protected override void LoadContent()
{
// Create a new SpriteBatch, which can be used to draw textures.
spriteBatch = new SpriteBatch(GraphicsDevice);
Cargador.Init(this);
Manejador.anchoPantalla = graphics.PreferredBackBufferWidth;
Manejador.altoPantalla = graphics.PreferredBackBufferHeight;
ManejadorEscenas.CargarEscenas();
ManejadorEscenas.Cambiar(Manejador.primerEscena);
}