wormframe.java

小型的java游戏,开发软件为eclipce,本人将代码开源

package worm;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;

import java.applet.*;
import java.net.*;


public class WormFrame extends JFrame
{
  private JPanel contentPane;
  private JMenuBar menuBar = new JMenuBar();
  private JMenu menuFile = new JMenu();
  private JMenuItem menuFileExit = new JMenuItem();
  private JMenu menuHelp = new JMenu();
  private JMenuItem menuHelpAbout = new JMenuItem();
  private JMenuItem menuFileNew = new JMenuItem();
  private JMenuItem menuFilePause = new JMenuItem();
  private JLabel statusBar = new JLabel();

  /* protected properties, used in both WormFrame and panel (class ScreenPanel)  */
  protected Dimension screenSize = new Dimension(600,400);
  protected ScreenPanel panel = new ScreenPanel();

  /* current key status
    currentKey==0 (default) : left arrow button is clicked
    currentKey==1 : right arrow button is clicked
    currentKey==2 : up arrow button is clicked
    currentKey==3 : down arrow button is clicked
  */
  protected int currentKey=0;   //default left arrow

  /* level define the game's level from 1 to 5  */
  int level = 1;

  /* the player's total score  */
  int score = 0;

  /* if you got enought leverscore in lower lever, you will enter in higher level */
  int levelScore=20;



  ////////////////////////////////////////////////////////////////////////////
  ////////////////////////////////////////////////////////////////////////////
  //begin of class ScreenPanel
  public class ScreenPanel extends JPanel implements Runnable {
    private Border border1;


    /* class snake(thread) is declare in file Snake.java */
    private Snake snake = null;

    /* the food point, which will be eated by snake*/
    private CPoint foodPoint=null;
    /* foodRadius the radius of food point  */
    int foodRadius = 5;



    public ScreenPanel() {
      try {
        jbInit();
      }
      catch(Exception ex) {
        ex.printStackTrace();
      }
    }


    /* game start, the snake begin move in the screen */
    public void start()
    {
      if(snake!=null)
      {
        snake.stop();
      }
      foodPoint = null;
      snake = new Snake(this);
      snake.start();
    }

    /* game pause, the snake don's move */
    public void pause()
    {
      if (snake!=null)
        snake.suspend();
    }

    /* game go on, the snake go on move*/
    public void goOn()
    {
      if(snake!=null)
        snake.resume() ;
    }


    /*the WormFrame class implements the Interface Runnable,
      so it must define the methord run().
      the method is very important in the whole program.
      */
    public void run()
    {
      while(true)
      {
        /* sleep time changed by the level */
        try
        {
          /* second will be changed with the level(1~5)  */
          int second = 120-20*level;
          snake.sleep(second);
        }
        catch(InterruptedException ex)
        {
        }

        /* place a food point in the screen */
        placePoint();

        /* judge whether the  snake ea*/
        boolean grow =false;
        if(snake.eatPoint(foodPoint))
        {
          //eatFoodSound();
          grow = true;
          score ++;
          if (score%levelScore==0)
          {
            level++;
          }
          foodPoint = null;
        }

        snake.setDirecotion(currentKey);
        if (snake.move(grow))
        {
          menuFilePause.setEnabled(false);
          statusBar.setText("Snake Dead!  Score "+score);
          snake.stop();
        }

        if(level==6)
        {
          win();
        }
        else
        {
          statusBar.setText("Level "+String.valueOf(level)+"   Score "+String.valueOf(score));
        }
        this.repaint() ;
      }
    }



    public void paint(Graphics g)
    {
      super.paint(g);

      if(this.foodPoint!=null)
        foodPoint.paint(g);

      if (snake!=null)
        snake.paint(g);
    }


    private void jbInit() throws Exception {
      this.setBackground(Color.black);
      border1 = BorderFactory.createBevelBorder(BevelBorder.LOWERED,Color.gray,Color.darkGray,Color.darkGray,Color.gray);
      this.setBorder(border1);
    }

    private void placePoint()
    {
      int index = (int)(Math.random()*11);
      Color color = Color.red;
      switch(index)
      {
        case 0: color = Color.red ; break;
        case 1: color = Color.yellow ;  break;
        case 2: color = Color.blue ;  break;
        case 3: color = Color.green ; break;
        case 4: color = Color.pink; break;
        case 5: color = Color.white ; break;
        case 6: color = Color.magenta; break;
        case 7: color = new Color(50,0,180); break;
        case 8: color = new Color(80,180,250); break;
        case 9: color = new Color(255,100,250); break;
        case 10: color = new Color(160,255,160); break;
      }

      if (foodPoint==null)
      {
        int r = snake.getRadius();
        int rx =  (int)(Math.random()* (screenSize.width-2*r))+r;
        int ry = (int)(Math.random()*(screenSize.height-2*r))+r;
        foodPoint = new CPoint(rx,ry,this.foodRadius ,color);
        foodPoint.show();
      }
    }


    private void win()
    {
      try
      {
        URL codeBase = new URL("file:" + System.getProperty("user.dir") + "/win.wav");
        AudioClip audioClip = Applet.newAudioClip(codeBase);
        audioClip.play();
      }
      catch(MalformedURLException ex)
      {
      }
      menuFilePause.setEnabled(false);
      statusBar.setText("Congratulation! You winned!");
      snake.stop();
    }

    private void eatFoodSound()
    {
      try
      {
        URL codeBase = new URL("file:" + System.getProperty("user.dir") + "/eat.wav");
        AudioClip audioClip = Applet.newAudioClip(codeBase);
        audioClip.play();
      }
      catch(MalformedURLException ex)
      {
      }
    }
  }
  //end of class ScreenPanel
  ////////////////////////////////////////////////////////////////////////////
  ////////////////////////////////////////////////////////////////////////////






  /**Construct the frame*/
  public WormFrame() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }

  /**Component initialization*/
  private void jbInit() throws Exception  {

    setIconImage(Toolkit.getDefaultToolkit().createImage(WormFrame.class.getResource("icon.gif")));
    this.setSize(screenSize.width+4,screenSize.height+68);
    this.setResizable(false);
    this.setTitle("贪吃蛇");
    this.addKeyListener(new java.awt.event.KeyAdapter() {
      public void keyPressed(KeyEvent e) {
        this_keyPressed(e);
      }
    });


    statusBar.setText(" ");

    //begin of menu's setting
    menuFile.setText("File");
    menuFile.setMnemonic('F');

    menuFileNew.setMnemonic('N');
    menuFileNew.setText("New Game");
    menuFileNew.setAccelerator(javax.swing.KeyStroke.getKeyStroke(78, java.awt.event.KeyEvent.CTRL_MASK, false));
    menuFileNew.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        menuFileNew_actionPerformed(e);
      }
    });

    menuFilePause.setText("Pause");
    menuFilePause.setMnemonic('P');
    menuFilePause.setEnabled(false);
    menuFilePause.setAccelerator(javax.swing.KeyStroke.getKeyStroke(80, java.awt.event.KeyEvent.CTRL_MASK, false));
    menuFilePause.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        menuFilePause_actionPerformed(e);
      }
    });

    menuFileExit.setText("Exit");
    menuFileExit.setAccelerator(javax.swing.KeyStroke.getKeyStroke(88, java.awt.event.KeyEvent.ALT_MASK, false));
    menuFileExit.setMnemonic('X');
    menuFileExit.addActionListener(new ActionListener()  {
      public void actionPerformed(ActionEvent e) {
        menuFileExit_actionPerformed(e);
      }
    });

    menuHelp.setText("Help");
    menuHelp.setMnemonic('H');
    menuHelpAbout.setText("About");
    menuHelpAbout.setMnemonic('A');
    menuHelpAbout.addActionListener(new ActionListener()  {
      public void actionPerformed(ActionEvent e) {
        menuHelpAbout_actionPerformed(e);
      }
    });


    menuFile.add(menuFileNew);
    menuFile.add(menuFilePause);
    menuFile.addSeparator();
    menuFile.add(menuFileExit);
    menuHelp.add(menuHelpAbout);
    menuBar.add(menuFile);
    menuBar.add(menuHelp);
    menuBar.setBorder(BorderFactory.createEmptyBorder() );
    this.setJMenuBar(menuBar);
    //end of menu's setting

    contentPane = (JPanel) this.getContentPane();
    contentPane.setLayout(new BorderLayout(5,5));
    contentPane.add(statusBar,  BorderLayout.SOUTH);
    contentPane.add(panel, BorderLayout.CENTER);

  }


  /**Overridden so we can exit when window is closed*/
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      menuFileExit_actionPerformed(null);
    }
  }

  /* KeyEvent----when the direction arrow button is clicked */
  private void this_keyPressed(KeyEvent e) {
    int key = e.getKeyCode();

    switch(key )
    {
      case KeyEvent.VK_LEFT:  currentKey =0; break;
      case KeyEvent.VK_RIGHT: currentKey =1; break;
      case KeyEvent.VK_UP:    currentKey =2; break;
      case KeyEvent.VK_DOWN:  currentKey =3; break;
    }

  }

  /**File | New Game action performed*/
  private void menuFileNew_actionPerformed(ActionEvent e)
  {
    currentKey=0;
    level = 1;
    score = 0;
    menuFilePause.setEnabled(true);
    panel.start() ;
  }

  /**File | Pasuse(/Go On) action performed*/
  void menuFilePause_actionPerformed(ActionEvent e) {
    String text = menuFilePause.getText();
    if(text.equals("Pause"))
    {
      this.panel.pause();
      menuFilePause.setText("Go On");
    }
    else
    {
      this.panel.goOn();
      menuFilePause.setText("Pause");
    }
  }

  /**File | Exit action performed*/
  private void menuFileExit_actionPerformed(ActionEvent e) {
    System.exit(0);
  }

  /**Help | About action performed*/
  private void menuHelpAbout_actionPerformed(ActionEvent e) {
    WormFrame_AboutBox dlg = new WormFrame_AboutBox(this);
    Dimension dlgSize = dlg.getPreferredSize();
    Dimension frmSize = getSize();
    Point loc = getLocation();
    dlg.setLocation((frmSize.width - dlgSize.width) / 2 + loc.x, (frmSize.height - dlgSize.height) / 2 + loc.y);
    dlg.setModal(true);
    dlg.show();
  }

}