/* (non-Javadoc)
  * @see chu.engine.Game#loop()
  */
 @Override
 public void loop() {
   while (!Display.isCloseRequested()) {
     final long time = System.nanoTime();
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
     glClearDepth(1.0f);
     getInput();
     final ArrayList<Message> messages = new ArrayList<>();
     if (client != null) {
       synchronized (client.messagesLock) {
         messages.addAll(client.messages);
         for (Message m : messages) client.messages.remove(m);
       }
     }
     SoundStore.get().poll(0);
     glPushMatrix();
     // Global resolution scale
     //			Renderer.scale(scaleX, scaleY);
     currentStage.beginStep(messages);
     currentStage.onStep();
     currentStage.processAddStack();
     currentStage.processRemoveStack();
     currentStage.render();
     //				FEResources.getBitmapFont("stat_numbers").render(
     //						(int)(1.0f/getDeltaSeconds())+"", 440f, 0f, 0f);
     currentStage.endStep();
     glPopMatrix();
     Display.update();
     timeDelta = System.nanoTime() - time;
   }
   AL.destroy();
   Display.destroy();
   if (client != null && client.isOpen()) client.quit();
 }