Question

我使用AWT和Swing创建了一个非常简单的Java平台游戏（它扩展了Canvas），在您首次加载该游戏时效果很好，但是有时在重新加载游戏时（例如在死亡之后），fps从60-100 +降至大约1。如果您继续加载游戏，它有时会消失，但通常会消失。

当使用NetBeans调试器运行游戏时，FPS丢失的严重性降低并且难以复制。有时（并非总是如此），当游戏重新加载并且FPS下降时，我得到了一个与BufferStrategy相关的“ java.lang.IllegalStateException：组件必须具有有效的对等体”（我在底部粘贴了完整的异常）。

据我所知（并且我与专家相距甚远），它似乎与任何内存泄漏，线程或额外的游戏对象（以前运行时遗留下来的）都不相关，所以我怀疑与BufferStrategy有关。有谁知道如何解决这一问题？预先感谢！

/** The render function */
private void render() {
        BufferStrategy bs = this.getBufferStrategy();
        if(bs == null) {            
            this.createBufferStrategy(3);         
            return;
        }

        Graphics g = bs.getDrawGraphics();
        Graphics2D g2d = (Graphics2D) g;

        --- code for stuff to draw removed ---


        g.dispose();
        bs.show();
    }

/** Function for reloading the level when pressing the enter key */
        if(key == KeyEvent.VK_ENTER) {                   
                    JFrame frame = (JFrame) SwingUtilities.getRoot(game);
                    game.setRunning(false); // This stops the game's thread.
                    try {
                        // Added delay to avoid IllegalStateException: Buffers have not been created.      
                        TimeUnit.MILLISECONDS.sleep(400);            

                        frame.dispose();

                    } catch (InterruptedException ex) {
          Logger.getLogger(KeyInput.class.getName()).log(Level.SEVERE, null, ex);
                    }
                   //Starts a new JFrame window with the game in it as a component.
                    Window w = new Window(1200, 900, "Super Sisters", new Game(Game.getSister())); 

                }


Exception in thread "Thread-$$" java.lang.IllegalStateException: Component must have a valid peer
    at java.awt.Component$FlipBufferStrategy.getBackBuffer(Component.java:4067)
    at java.awt.Component$FlipBufferStrategy.updateInternalBuffers(Component.java:4050)
    at java.awt.Component$FlipBufferStrategy.revalidate(Component.java:4165)
    at java.awt.Component$FlipBufferStrategy.revalidate(Component.java:4147)
    at java.awt.Component$FlipBufferStrategy.getDrawGraphics(Component.java:4139)

BufferStrategy是否在Java游戏中导致奇怪的FPS下降？

0 个答案: