移动玩家时的延迟峰值

2022-01-24 00:00:00 java swing jpanel jframe

播放器是一个面板，它被移除，位置改变，然后重新添加到另一个面板(包含此方法)，该面板被绘制到主框架.还有许多其他包含草精灵的小面板被绘制到主面板作为地形图块.我认为问题在于，当我调用 revalidate() 时，它也会重新验证所有这些小面板.我该如何解决这个问题?

The player is a panel, and it is getting removed, its position changed, and then re-added to another panel (which is what contains this method) which is drawn to the main frame. There are also a lot of other small panels containing a grass sprite being drawn to the primary panel as terrain tiles. I think the problem is that when I call revalidate(), it revalidates all those little panels as well. How can I solve this?

我应该提到我正在使用 RelativeLayout 将播放器定位在主面板上.

I should mention that I am using RelativeLayout to position the players on the primary panel. 

private class MainKeyAdapter extends KeyAdapter {

    @Override
    public void keyPressed(KeyEvent evt) {
        // TODO add your handling code here:
        if(AttentionedPlayer != null)
        {
            if (evt.getKeyCode() == KeyEvent.VK_UP) {
                AttentionedPlayer.Ypos -= 16;
            }
            if (evt.getKeyCode() == KeyEvent.VK_DOWN) {
                AttentionedPlayer.Ypos += 16;
            }
            if (evt.getKeyCode() == KeyEvent.VK_LEFT) {
                AttentionedPlayer.Xpos -= 16;
            }
            if (evt.getKeyCode() == KeyEvent.VK_RIGHT) {
                AttentionedPlayer.Xpos += 16;
            }
            remove(AttentionedPlayer);
            AttentionedPlayer.movePlayer();
            System.out.println("!!!!"+AttentionedPlayer.constraints.toString());
            add(AttentionedPlayer, AttentionedPlayer.constraints, AttentionedPlayer.Zpos);
            AttentionedPlayer.revalidate();
        }
    }

}

推荐答案

AttentionedPlayer.movePlayer(); 似乎是一个密集的操作，你从 EDT(GUI 线程).相反，从一个新线程或 SwingWorker 中执行它.

AttentionedPlayer.movePlayer(); seems to be an intensive operation, and you execute it from within EDT (the GUI thread). Instead, execute it from within a new thread or a SwingWorker.

阅读此答案以了解更多关于SwingWorker.

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