Java - 如何使用 SwingWorker 创建多线程游戏

Question

我想用线程创建一个 [1 人 vs PC] 游戏。

我们的棋盘上有 10*10 个两种颜色的形状，如下所示:

when the Player clicks on BLUE Circles , Their color turns into Gray.

at the other side PC should turn all RED Rectangles into Gray.

the WINNER is who Clears all his/her own Shapes Earlier.

---

播放器的代码工作正常，但是，我的问题在于实现游戏的 PC 端，正如我在此 article 中所读到的我应该使用 SwingWorker 在 GUI 中实现线程。这是我第一次使用 SwingWorkers，我不知道应该如何才能正常工作。

这是我的代码:

主类

public class BubblePopGame {

public static final Color DEFAULT_COLOR1 = Color.BLUE;
public static final Color DEFAULT_COLOR2 = Color.RED;

public BubblePopGame() {
    List<ShapeItem> shapes = new ArrayList<ShapeItem>();

    int Total = 10;
    for (int i = 1; i <= Total; i++) {
        for (int j = 1; j <= Total; j++) {
            if ((i + j) % 2 == 0) {

                shapes.add(new ShapeItem(new Ellipse2D.Double(i * 25, j * 25, 20, 20),
                        DEFAULT_COLOR1));
            } else {
                shapes.add(new ShapeItem(new Rectangle2D.Double(i * 25, j * 25, 20, 20),
                        DEFAULT_COLOR2));
            }
        }
    }

    JFrame frame = new JFrame("Bubble Pop Quest!!");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    ShapesPanel panel = new ShapesPanel(shapes);
    frame.add(panel);
    frame.setLocationByPlatform(true);
    frame.pack();
    frame.setVisible(true);
}

public static void main(String[] args) {
    SwingUtilities.invokeLater(new Runnable() {
        public void run() {
            new BubblePopGame();
        }
    });
}

形状项目类

public class ShapeItem {

private Shape shape;
private Color color;

public ShapeItem(Shape shape, Color color) {
    super();
    this.shape = shape;
    this.color = color;
}

public Shape getShape() {
    return shape;
}

public void setShape(Shape shape) {
    this.shape = shape;
}

public Color getColor() {
    return color;
}

public void setColor(Color color) {
    this.color = color;
}

ShapesPanel 类

public class ShapesPanel extends JPanel {

private List<ShapeItem> shapes;
private Random rand = new Random();
private SwingWorker<Boolean, Integer> worker;

public ShapesPanel(List<ShapeItem> shapesList) {
    this.shapes = shapesList;
    worker = new SwingWorker<Boolean, Integer>() {            

        @Override
        protected Boolean doInBackground() throws Exception {
            while (true) {
                Thread.sleep(200);
                int dim = rand.nextInt(300);
                publish(dim);                
                return true;
           }
        }

        @Override
        protected void done() {
            Boolean Status;
            try {                    
                Status = get();
                System.out.println(Status);
                super.done();                    //To change body of generated methods, choose Tools | Templates.
            } catch (InterruptedException ex) {
                Logger.getLogger(ShapesPanel.class.getName()).log(Level.SEVERE, null, ex);
            } catch (ExecutionException ex) {
                Logger.getLogger(ShapesPanel.class.getName()).log(Level.SEVERE, null, ex);
            }
        }

        @Override
        protected void process(List<Integer> chunks) {
            int mostRecentValue = chunks.get(chunks.size()-1);
            System.out.println(mostRecentValue);
                Color color2 = Color.LIGHT_GRAY;
                ShapeItem tmpShape = shapes.get(mostRecentValue);
                if(tmpShape.getColor()==Color.RED){
                    tmpShape.setColor(color2);
                }
                repaint();                
       }

    };
    worker.execute ();

    addMouseListener(new MouseAdapter() {
        @Override
        public void mouseClicked(MouseEvent e) {
            Color color1 = Color.LIGHT_GRAY;
            for (ShapeItem item : shapes) {
                if (item.getColor() == Color.BLUE) {
                    if (item.getShape().contains(e.getPoint())) {
                        item.setColor(color1);
                    }
                }
            }
            repaint();
        }
    });
}

@Override
protected void paintComponent(Graphics g) {
    super.paintComponent(g);

    Graphics2D g2 = (Graphics2D) g.create();

    for (ShapeItem item : shapes) {
        g2.setColor(item.getColor());
        g2.fill(item.getShape());
    }

    g2.dispose();
}

@Override
public Dimension getPreferredSize() {
    return new Dimension(300, 300);
}

private Color getRandomColor() {
    return new Color(rand.nextFloat(), rand.nextFloat(),
            rand.nextFloat());
}

Answer 1

如果我对你的代码的理解是正确的，你正在制作一个游戏，其中人类玩家必须尽可能快地点击他的所有形状，而 PC 也随机点击形状。第一个清除他所有形状的人获胜。

如果这是正确的，您可能需要将 SwingWorker 调整为

• 循环直到游戏结束。目前，由于 return 语句
，您的循环在第一次到达循环末尾时退出
• 由于您没有对 SwingWorker 的 boolean 返回值做任何事情，您不妨让它返回 void
• 无需在done 方法中调用get。调用该方法时，SwingWorker 已完成。您似乎只对中间结果感兴趣
• 在process 方法中，您可能希望遍历所有值。请注意，process 方法不会在您发布 内容时每次 调用。当 EDT(事件调度线程)可用时，您发布的值被分组并批量传递给 process 方法