Question

我正在尝试创建一个简单的菜单（黑色背景），屏幕中间只有一个简单的按钮，显示“Play！”，然后当用户点击该按钮时，它将启动游戏。现在我不打算复制并粘贴我的所有游戏代码，但是我将给出扩展我正在使用的applet的起始部分。这是代码：

public class Game extends JApplet implements Runnable, KeyListener
{
AnimateSprite user;
AnimateSprite monster, troll;
Coins ten, twenty;
Thread thread;
Random r;
public void init()
{
    r = new Random();
    user = new AnimateSprite();
    user.setImage(getImage(getCodeBase(), "player.gif"));
    user.setLocation(0, 0);
    monster = new AnimateSprite();
    monster.setImage(getImage(getCodeBase(), "monster.gif"));
    monster.setLocation(100, 100);
    troll = new AnimateSprite();
    troll.setImage(getImage(getCodeBase(), "monster.gif"));
    troll.setLocation(350, 350);
    setupCoins();
    setFocusable(true);
    addKeyListener(this);
    thread = new Thread(this);
    thread.start();
}
public void setupCoins()
{
    ten = new Coins(10);
    twenty = new Coins(20);
    ten.setLocation(400, 350);
    twenty.setLocation(450, 50);
    ten.setImage(getImage(getCodeBase(), "coins.gif"));
    twenty.setImage(getImage(getCodeBase(), "coins.gif"));
}

我要做的就是为用户使用/创建一个简单的界面，他们所做的就是点击“播放！”按钮然后它将启动游戏就像我将单独运行applet一样。我的问题是如何做到这一点的最佳方式。任何帮助是极大的赞赏！如果需要，我还会为此添加更多代码。

Answer 1

试试这个

import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;

public class Joption {
 public static void main(String[] args) {
final JFrame f = new JFrame("The Frame");
   f.setSize(300, 300);
   Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
   int width = (int)screenSize.getWidth();
   int height = (int)screenSize.getHeight();
   f.setLocation((int)(width/4.5), (int)(height/3.5));
   JButton play=new JButton("play");
   play.addActionListener(new ActionListener(){
       public void actionPerformed(ActionEvent e) {
           System.out.print("your code/start meathod goes here");
           f.dispose();
       }});
   f.add(play);
   f.setVisible(true);
   }

}

我不太了解你的代码，所以我不能做得更好，也许我可以让按钮看起来更好，但你明白了。

    import java.awt.Dimension;
    import java.awt.Toolkit;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;

    import javax.swing.JApplet;
    import javax.swing.JButton;
    import javax.swing.JFrame;


    public class Jap extends JApplet {
    /**
         * 
         */
        private static final long serialVersionUID = 1L;

    public void init(){
    //    r = new Random();
    //    user = new AnimateSprite();
    //    user.setImage(getImage(getCodeBase(), "player.gif"));
    //    user.setLocation(0, 0);
    //    monster = new AnimateSprite();
    //    monster.setImage(getImage(getCodeBase(), "monster.gif"));
    //    monster.setLocation(100, 100);
    //    troll = new AnimateSprite();
      //troll.setImage(getImage(getCodeBase(), "monster.gif"));
        //troll.setLocation(350, 350);
        //setupCoins();
        setFocusable(true);
        //addKeyListener(this);

        //thread = new Thread(this);
        final JFrame f = new JFrame("The Frame");
        f.setSize(300, 300);
        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
        int width = (int)screenSize.getWidth();
        int height = (int)screenSize.getHeight();
       f.setLocation((int)(width/4.5), (int)(height/3.5));
       JButton play=new JButton("play");
       play.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e) {
                System.out.print("your code/start meathod goes here");

                //thread.start(); thread will have to be final to be called here or rename it to something that is final
                f.dispose();
            }});
       f.add(play);
       f.setVisible(true);
     }
      void Start(){

      }
    }

像这样。

Answer 2

你可以在init方法中添加播放按钮，并让它调用一个方法，你不能使用start方法，只是启动线程。

例如：

public void init(){
    //whatever you want here
    t1 = new Thread(this);
    play = new JButton("Play");
    //setLocation, etc, etc.
    add(play);
    play.addActionListener(new ActionListener(){
        public void actionPerformed(ActionEvent e){
            remove(play);
            repaint();
            test();
        }
    });
}
public void test(){
    t1.start();
}
public void run(){
    //whatever you want here
}

所以这里发生的是你有一个按钮，当按下它时，将自己从屏幕上移开，调用paint（通过重绘）来绘制屏幕，然后调用一个方法（不能是{{1 }}）启动线程，这将启动你的动画。

Java游戏菜单

2 个答案: