@Override
 public void entityRemoved(Entity entity) {
   BlueSquareComponent bsc = Mappers.blueSquareMap.get(entity);
   if (bsc != null) {
     BodyComponent bc = Mappers.bodyMap.get(entity);
     bc.getBody().getWorld().destroyBody(bc.getBody());
     bsc.getActor().remove();
     bsc.setActor(null);
   }
 }