import org.newdawn.slick.loading.DeferredResource; //导入依赖的package包/类
@Override public void update(GameContainer container, StateBasedGame game, int delta) throws SlickException {
	 
	// load three at a time.
	for (int i = 0; i < LoadingList.get().getRemainingResources(); ++i) {
		DeferredResource asset = LoadingList.get().getNext();
		if (asset != null) {
			try {
				asset.load();
			} catch (IOException e) {
				throw new SlickException("Issue asynchronously loading world resources: " + e.getMessage(), e);
			}
		} else {
			break;
		}
		
		if (i > 2)
			{ break; }
	}
	
	if (LoadingList.get().getRemainingResources() == 0 && timeInSplash > MIN_FRAMES_IN_SPLASH) {
		// Tell next state to actually build the world now that the graphics are in place; remember,
		// certain calculations require the actual graphics, such as determining the number of hazards.
		
		worldIsReady(game);
		game.enterState(
			Game.ID, 
			new FadeOutTransition(Color.black), 
			new FadeInTransition(Color.black));
	}
	
	++timeInSplash;
}