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1  Game Development / Newbie & Debugging Questions / Re: help with double buffer on: 2011-01-23 23:56:40
 thanks for the those tips. Smiley
2  Game Development / Newbie & Debugging Questions / Re: help with double buffer on: 2011-01-23 02:34:47
Thank you Smiley
I thought the buffer Strategy would do that but i was wrong.
instead of doing
 
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    g.setColor (clearColor);
    g.fillRect(0,0,screenWidth, screenHeight);
    g.setColor ( rectColor);


i did
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g.clearRect(0, 0, w.getWidth(), w.getHeight());

found that, that method worked instead
3  Game Development / Newbie & Debugging Questions / help with double buffer on: 2011-01-23 00:32:31
I am starting to work with double buffering with BufferedStrategy and my screen doesn't clear. well here is my code.

StarHawk.class ( the main class)
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@Override
   public void init() {
   }

   @Override
   public void update(long delta, Window w) {
      w.addMouseMotionListener(new MouseMotionListener(){
         @Override
         public void mouseDragged(MouseEvent paramMouseEvent) {}

         @Override
         public void mouseMoved(MouseEvent e) {
            x = e.getX();
            y = e.getY();
           
         }
         
      });
     
   }
   
   @Override
   public void render(Graphics2D g, Window w) {
      g.fillRect(x, y, 200, 200);
     
   }
   
   public static void main(String[] args) {
      GameContainer game = new GameContainer(new StarHawk());
      game.setScreenMode(1280, 1024, true);
      game.setTitle("Mini StarHawk Game");
      game.EscapeOnClose();
      game.startGame();
     
   }


GameContainer.class
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public void startGame() {
      System.out.println(engineName+"Game Started"+getDate());
      setupListenerFrame();
      if(isFullscreen) {
         setFullScreen(dm);
      }
      frame.createBufferStrategy(2);         // frame is a JFrame
     
      new Thread(){
         public void run() {
            game.init();               // abstract method in StarHawk class
            isRunning = true;
            long lastLoopTime = System.currentTimeMillis();
            while(isRunning) {
               long delta = System.currentTimeMillis() - lastLoopTime;
               lastLoopTime = System.currentTimeMillis();
               Graphics2D g = getGraphics(); // gets graphics2D
               game.update(delta,getFullScreenWindow()); // abstract method in StarHawk class
               game.render(g,getFullScreenWindow());     // abstract method in StarHawk class
               g.dispose();
               update(); // update method
               
               try {Thread.sleep(10);} catch (InterruptedException e) {}
            }
           
         }
         
      }.start();
   }


update method from GameContainer.class
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public void update() {
      Window window  = vc.getFullScreenWindow();
      if(window != null) {
         strategy = window.getBufferStrategy();
         if(!strategy.contentsLost()) {
            strategy.show();
         }
      }


getGraphics method from GameContainer.class
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public Graphics2D getGraphics() {
        Window window = vc.getFullScreenWindow();
        if (window != null) {
            BufferStrategy strategy = window.getBufferStrategy();
            return (Graphics2D)strategy.getDrawGraphics();
        }
        else {
            return null;
        }
    }


i don't know what i did wrong. the screen doesn't flicker but it doesn't clear it.
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