for (int i=0; i<layerElements.size(); i++) {
Element w = layerElements.get(i);
w.startEffect(effectEventId, localEndNotify);
if (effectEventId == EffectEventId.onStartScreen) {
w.onStartScreen();
}
}
// just in case there was no effect activated, we'll check here, if we're already done
localEndNotify.enable();