Question

我需要创建一个程序，随机滚动5个骰子，然后在JPanel中显示这些骰子的面孔，就像Yahtzee游戏一样。我有每个模具面的图像，我很难将我随机卷起的数字附加到图像上。因此，例如，如果随机数为1，则它将显示五个不同面的模面1。我下面的内容是我的Die类，Panel类和我的GameDrive。很抱歉复制了所有代码，不确定是否需要驱动程序来解决此问题，但dint知道需要编写代码的位置。

public class Die implements Comparator {
    private int face;
    public Die() {
        super();
        face = (int)(Math.random() * 6) + 1;
    }
    public Die(int f){
        super();
        face = f;
    }
    public int getFace() {
        return face;
    }
    public void setFace(int face) {
        this.face = face;
    }
    @Override
    public String toString() {
        return "Die [face=" + face + "]";
    }
    @Override
    public boolean equals(Object obj) {
        return (this.getFace() == ((Die)obj).getFace());
    }
    @Override
    public int compare(Object a, Object b) {
        Die d1 = (Die)a;
        Die d2 = (Die)b;

        if (d1.getFace() == d2.getFace())
            return 0;
        if (d1.getFace() > d2.getFace())
            return 1;

        return -1;
    }
}

小组类

public class Panel extends JPanel {

    private BufferedImage [] img = new BufferedImage [6];
    private int w = 0, h = 0, xloc = 0, yloc = 0;

    public Panel() {
        super();
        try {
            img[0] = ImageIO.read(new File("Die1.jpg"));
            img[1] = ImageIO.read(new File("Die2.jpg"));    
            img[2] = ImageIO.read(new File("Die3.jpg"));    
            img[3] = ImageIO.read(new File("Die4.jpg"));    
            img[4] = ImageIO.read(new File("Die5.jpg"));
            img[5] = ImageIO.read(new File("Die6.jpg"));    
        } catch (IOException e) {
            e.printStackTrace();
        }
        this.setPreferredSize(new Dimension(1300, 600)); 
        w = img[0].getWidth();
        h = img[0].getHeight();
    }

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

        xloc = 0;
        yloc = 0;
        for (BufferedImage i : img)
        {
            g.drawImage(i, xloc, yloc, w, h, null);
            xloc += w;
        }

        yloc += h;
        xloc = 0;
        for (int i = 0; i < img.length; i++)
        {
            g.drawImage(img[i], xloc, yloc, w, h, null);
            xloc += w;
        }
    }
}

驱动器

public class GameDriver {

    public static void main(String[] args) {
        Frame f = new Frame();
        ArrayList<Die> roll = new ArrayList<Die>(5);

        for (int i =0; i < 5; i++)
            roll.add(new Die());

        roll.sort(roll.get(0));

        for (Die e : roll)
            System.out.println(e);
    }
}

Answer 1

创建Panel时，需要向其传递对要显示的骰子的引用。

（我认为这就是你要问的）

你可以在构造函数中传递一些Die值，然后在你的引用中绘制它们＆＃34; paint＆＃34;方法，例如......

public class Panel extends JPanel {

    private BufferedImage [] img = new BufferedImage [6];
    private int w = 0, h = 0, xloc = 0, yloc = 0;
    private Die[] state;

    public Panel(Die[] state) {
        super();
        this.state = state;
        try {
            img[0] = ...
            ...
            img[5] = ImageIO.read(new File("Die6.jpg"));    
        } catch (IOException e) {
            e.printStackTrace();
        }
        this.setPreferredSize(new Dimension(1300, 600)); 
        w = img[0].getWidth();
        h = img[0].getHeight();
    }

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

        // ...I got rid of the bit that just draws all of the faces...

        xloc = 0;
        yloc = 0;
        for (int i = 0; i < state.length; i++)
        {
            int imageIndex = state[i].getFace() - 1;
            g.drawImage(img[imageIndex], xloc, yloc, w, h, null);
            xloc += w;
        }
    }

}

（我没有尝试过这样做，所以它可能无法编译！）

看起来你在你发布的任何代码中都没有创建这个Panel，但假设你想在main方法中显示它，你需要做这样的事情......

public class GameDriver {

    public static void main(String[] args) {
        Frame f = new Frame();
        ArrayList<Die> roll = new ArrayList<Die>(5);

        for (int i =0; i < 5; i++)
            roll.add(new Die());

        // This is a bit strange...
        roll.sort(roll.get(0));

        for (Die e : roll)
            System.out.println(e);

        // Create the panel
        Panel panel = new Panel(roll.toArray(new Die[0]));

        // TODO put it in a frame and show it
    }

}

如何将图像文件附加到将在JPanel中显示的随机滚动数字

1 个答案: