hitpigheadv3.java

打猪头

            pigSprite[i].paintSprite(drawOffScreen);


         hammerSprite.paintSprite(drawOffScreen);
      }
           

      g.drawImage(OffScreen,0,35,this); 
   }

   public void update(Graphics g)    
   {
      paint(g);    
   }

   public void run()
   {
      while(newThread != null)
      {
         repaint();       

         try
         {
            Thread.sleep(33);  
         }
         catch(InterruptedException E){ }

         if(StartGame)
            S_Screen.UpdateStatus();  
         else
         {

            time   = new GregorianCalendar();

            if(CurrentSecond != time.get(Calendar.SECOND))
            {
               CurrentSecond = time.get(Calendar.SECOND);
            
               GameSecond++;
               Time.setText("时间: " + GameSecond + "秒");


               if(GameSecond > 0 && GameSecond % 5 == 0 && level < 50)
               {
                  for(int i=0;i<9;i++)
                  {
                     pigSprite[i].setShow(50 + (level * 5));
                     pigSprite[i].setHide(9900 - (level * 50));
                  }

                  level++;
                  showStatus("level: " + level);
               }
            }

            for(int i=0;i<9;i++)     
               pigSprite[i].updateState();
         }
      }
   }

   public void endGame(boolean isEndGame)
   {
      EndGame = isEndGame;
   }

   public void mouseExited(MouseEvent e)  
   {
      hammerSprite.setVisible(false);  
      hammerSprite.setLocation(0,0);  
   }
   
   public void mouseClicked(MouseEvent e){ }
   
   public void mouseEntered(MouseEvent e)   
   {
      hammerSprite.setVisible(true);    

      hammerSprite.setLocation(e.getX() - (HammerWidth / 2),
                               e.getY() - (HammerHeight / 2) - 35);
      showStatus("X:" + e.getX() + "," + "Y:" + e.getY());
   }
   
   public void mousePressed(MouseEvent e)  
   {
      if(StartGame) return;
      
      hammerSprite.updateState();      

      int X = hammerSprite.getX();   
      int Y = hammerSprite.getY();    

      for(int i=0;i<9;i++)
      {
         if(pigSprite[i].hit(X,Y,FrameWidth,FrameHeight,HammerWidth,
                             HammerHeight) == true)
         {
            score = score + 10;
            Score.setText("得分: " + score);
         }
      }
   }

   public void mouseReleased(MouseEvent e)  
   {
      if(StartGame) return;

      hammerSprite.updateState();     
   }

   public void mouseMoved(MouseEvent e) 
   {
      hammerSprite.setLocation(e.getX() - (HammerWidth / 2),
                               e.getY() - (HammerHeight / 2) - 35);
      showStatus("X:" + e.getX() + "," + "Y:" + e.getY());
   }  
 
   public void mouseDragged(MouseEvent e) 
   {

      hammerSprite.setLocation(e.getX() - (HammerWidth / 2),
                               e.getY() - (HammerHeight / 2) - 35);
   }

   public void actionPerformed(ActionEvent e)
   {
      if(e.getSource() == start)
      {
         StartGame = false;
 
         start.setEnabled(false);
         end.setEnabled(true);
      }
      
      if(e.getSource() == end)   
      {
         newThread = null;  
         CD.show();    

         if(EndGame)    
         {

            score         = 0;
            GameSecond    = 0;
            CurrentSecond = -1;
            StartGame     = true;
            EndGame       = false;
            start.setEnabled(true);
            end.setEnabled(false);

            Time.setText("时间: 0");
            Score.setText("得分: 0");
         }

         newThread = new Thread(this);  
         newThread.start();    
      }
   }
}

class StartScreen    
{

   int     width,height,StringWidth,StringHeight,Ascent,Descent,X,Y;
   int     ImageLeftBound,ImageRightBound,ImageX,ImageY,ImageWidth,
           ImageHeight,VX;
   Font    F1,F2,F3;
   Image   Normal,Hit,currentImage;
   String  ChineseTitle,EnglishTitle,PressEnter;
   Applet  Game;
   boolean showPressEnter;

   FontMetrics FM;

 
   public StartScreen(int AppletWidth,int AppletHeight,Applet Game,
                      Image normal,Image hit)
   {

      F1     = new Font("TimesRoman",Font.BOLD,72);
      F2     = new Font("TimesRoman",Font.BOLD + Font.ITALIC,36);
      F3     = new Font("TimesRoman",Font.BOLD,20);

      ChineseTitle    = "棒打猪头";         
      EnglishTitle    = "Hit Pig's Head";    
      
      width           = AppletWidth;       
      height          = AppletHeight;      

      Normal          = normal; 
      Hit             = hit; 
 
      ImageWidth      = Normal.getWidth(Game);  
      ImageHeight     = Normal.getHeight(Game); 
      ImageLeftBound  = 25;                    
      ImageRightBound = AppletWidth - (25 + ImageWidth);  
      ImageX          = ImageRightBound;    
 
      VX              = -2;    
      this.Game       = Game;
      currentImage    = Normal; 
      showPressEnter  = true;    
   }

   public void UpdateStatus() 
   {
      ImageX = ImageX + VX;    

      if(ImageX <= ImageLeftBound) 
      {
         currentImage = Hit;    

         ImageX = ImageLeftBound;  
         VX     = -VX;      
      }

      if(ImageX >= ImageRightBound) 
      {
         currentImage = Normal;  

         ImageX = ImageRightBound; 
         VX     = -VX;       
      }
   }

   public void paintScreen(Graphics g) 
   {
      g.setFont(F1);  
      FM = g.getFontMetrics();  //获取当前字体的字体规格。

      Ascent       = FM.getAscent();/*确定由此 FontMetrics 对象所描述的 Font 的 font ascent。
                                 font ascent  是字体的 baseline 到大多数字母数字字符顶部的距离。在 Font 中，
                                  有些字符可能扩展超过 font ascent 线。
                                 返回：
                                 Font 的 font ascent。*/
      Descent      = FM.getDescent();/*确定由此 FontMetrics 对象所描述的 Font 的 font descent。
                                     font descent 是字体的 baseline 到大多数字母数字字符底部的距离。
                                     在 Font 中，有些字符可能扩展到 font descent 线之下。 

                                  返回：
                                  Font 的 font descent。
                                                          */
      StringWidth  = FM.stringWidth(ChineseTitle);
                                    /*返回此 Font 中指定 String 的总 advance width。advance 是字符串
                                     * 的 baseline 上最左边的点到最右边的点之间的距离。*/
      StringHeight = Ascent + Descent; 
      
      X            = (width - StringWidth) / 2;
      Y            = Ascent;

      g.setColor(Color.black);      
      g.drawString(ChineseTitle,X,Y); 

      Y            = StringHeight;
      g.drawLine(X,Y,X+StringWidth,Y);  

      X            = X + 30;
      Y            = Y + 5;
      g.drawLine(X,Y,X+StringWidth-60,Y);


      g.setFont(F2);                  
      FM = g.getFontMetrics();

      Ascent       = FM.getAscent();
      Descent      = FM.getDescent();
      StringWidth  = FM.stringWidth(EnglishTitle);
      StringHeight = Ascent + Descent; 

      X            = (width - StringWidth) / 2;
      Y            = Y + Ascent;
      g.drawString(EnglishTitle,X,Y);  

      ImageY       = Y + Descent + 30; 
      g.drawImage(currentImage,ImageX,ImageY,Game);
   }
}

class CloseDialog extends Dialog implements ActionListener//关闭时显示的对话框
{
   Panel        P1,P2;//组件容器
   JButton       B1,B2;//添加确定和取消按钮
   HitPigHeadv3 Game;

   public CloseDialog(HitPigHeadv3 Game,Frame owner)//构造函数
   {
      super(owner,"离开游戏...",true);  //设置标题

      this.Game = Game;
  
      setLayout(new GridLayout(2,1));   //设置布局管理为GrideLayout
      P1 = new Panel();                 
      P2 = new Panel();
      
      P1.add(new Label("真的要离开吗???"));
      P2.add(B1 = new JButton("确定"));    
      P2.add(B2 = new JButton("取消"));
      B1.addActionListener(this);        
      B2.addActionListener(this);

      add(P1);       
      add(P2);
      pack();      //以最紧凑的方式显示组件
   }

   public void actionPerformed(ActionEvent e)
   {
      if(e.getSource() == B1)    
         Game.endGame(true);
      else if(e.getSource() == B2) 
         Game.endGame(false);
      //判断事件源
      hide(); 
   }
}