Question

每当我加载背景图像时，无论图像的大小有多小，我都会遇到此问题。我正在添加一张尺寸为3.81kb的1010x600 png图片。我正在使用来自swing的计时器来重绘它。每当我添加并绘制bg.paintIcon方法时，游戏就会变慢。

public void paintComponent(Graphics g){
    super.paintComponent(g);
    bg.paintIcon(null, g, 0, 0);
    p.img.paintIcon(null, g, p.x, p.y);
    g2p = (Graphics2D)g;
    g2p.setColor(Color.green);
    g2p.fillRect(20, 10, (int)Math.ceil((p.health/1000.0)*960), 20);
    life.paintIcon(null, g, 0, 8);

    g2p.setColor(Color.black);
    g2p.drawRect(19, 34, 960+1, 20+1);
    g2p.setColor(Color.blue);
    g2p.fillRect(20, 35, (int)Math.ceil((p.mana/500.0)*960), 20);

    //System.out.println(df.format(p.health/1000.0));
    jl.setLocation(p.x, p.y);
    //jl.setText("Current Health: "+p.health);
    for (int i = 0 ; i < 20 ; i++){//IMPORTANT
        g2[i] = (Graphics2D) g;
        e[i].img.paintIcon(null, g, e[i].getx(), e[i].gety());
        if (e[i].dead){
            gen[i] = new Thread(new Generation(i));
            if (letalive){
                letalive = false;
                gen[i].start();
            }
        }
    }
}

Answer 1

您的paintComponent代码应该绘制。期。没别了。

以下是paintComponent方法的外观。

public void paintComponent(Graphics g){
    super.paintComponent(g);
    bg.paintIcon(null, g, 0, 0);
    p.img.paintIcon(null, g, p.x, p.y);
    g2p = (Graphics2D)g;
    g2p.setColor(Color.green);
    g2p.fillRect(20, 10, (int)Math.ceil((p.health/1000.0)*960), 20);
    life.paintIcon(null, g, 0, 8);

    g2p.setColor(Color.black);
    g2p.drawRect(19, 34, 960+1, 20+1);
    g2p.setColor(Color.blue);
    g2p.fillRect(20, 35, (int)Math.ceil((p.mana/500.0)*960), 20);

    //System.out.println(df.format(p.health/1000.0));
    jl.setLocation(p.x, p.y);
    //jl.setText("Current Health: "+p.health);
    for (int i = 0 ; i < 20 ; i++){//IMPORTANT
        e[i].img.paintIcon(null, g, e[i].getx(), e[i].gety());
    }
}

此代码属于您的控制器。

   for (int i = 0 ; i < 20 ; i++) {
       if (e[i].dead){
            gen[i] = new Thread(new Generation(i));
            if (letalive){
                letalive = false;
                gen[i].start();
            }
        }
    }

添加背景图像时，Java游戏会变慢

1 个答案: