Java比賽小程序不能正常工作

我在模擬兩個競爭者之間的比賽時遇到了問題。這是您典型的比賽項目，您可以使用隨機數字生成器來確定競爭對手使用的「動作」。正如我在下面的代碼中看到的那樣，賽道由50個矩形組成，填充的矩形顯示每個參賽者在賽道上的位置。例如，某些「移動」會使競爭對手向右跳9格，或向後跳2格。當我運行小程序時，僅顯示初始起始位置;該applet不起作用。我意識到這是很多代碼，但我需要做什麼來解決我的問題？我真的被困在這一點上。任何幫助表示讚賞。我只能使用AWT，而不能揮杆。這是類的分配：/這裏是代碼：Java比賽小程序不能正常工作

import java.awt.*; 
import java.applet.*; 


    public class Example extends Applet 
    { 
     Image tortoise, hare; 
     int tortX = 250, hareX = 250; 
     final int tortY = 100, hareY = 300, WIDTH = 15, HEIGHT = 50; 
     int turn; String turnNum; 
     int move; String tMove, hMove; 

     public void init() 
     { 
      tortoise = getImage(getDocumentBase(), "images/tortoise.gif"); 
      hare = getImage(getDocumentBase(), "images/hare.gif"); 
      move = 0; turn = 0; 
     } 


     public void control() 
     { 
      while ((tortX < 985) || (hareX < 985)) 
      { 
       move = (int)(10 * Math.random()); 
       switch (move) 
       { 
        case 1: 
        case 2: 
         tortX += (3 * WIDTH); 
         hareX += (9 * WIDTH); 
         tMove = "Fast Plod"; hMove = "Big Hop"; 
         break; 
        case 3: 
        case 4: 
        case 5: 
         tortX += (3 * WIDTH); 
         hareX += WIDTH; 
         tMove = "Fast Plod"; hMove = "Small Hop"; 
         break; 
        case 6: 
         tortX += WIDTH; 
         if (hareX == 250) {} // DO NOTHING 
         else if (hareX <= (250 + (11 * WIDTH))) 
          hareX = 250; 
         else 
          hareX -= (12 * WIDTH); 
         tMove = "Slow Plod"; hMove = "Big Slip"; 
         break; 
        case 7: 
        case 8: 
         tortX += (1 * WIDTH); 
         if (hareX == 250) {} // DO NOTHING 
         else if (hareX <= (250 + (WIDTH))) 
          hareX = 250; 
         else 
          hareX -= (2 * WIDTH); 
         tMove = "Slow Plod"; hMove = "Small Slip"; 
         break; 
        case 9: 
        case 10: 
         if (tortX == 250) {} // DO NOTHING 
         else if (tortX <= (250 + (5 * WIDTH))) 
          tortX = 250; 
         else 
          tortX -= (6 * WIDTH); 
         tMove = "Slip"; hMove = "Fall Asleep. Zzz..."; 
         break; 
         // Hare falls asleep. No action. 
       } 

       turn++; turnNum = (turn + ""); 
       repaint(); 
       for (int i = 1; i <= 10; i++) 
       { 
        delay(); 
       } 
      } 

      tortX = 985; hareX = 985; 
      repaint(); 
     } 

     public void paint(Graphics screen) 
     { 
      drawRace(screen); 

      if (tortX >= 985) 
      { 
       screen.setFont(new Font("Times New Roman", Font.ITALIC, 48)); 
       screen.drawString("Tortoise Wins", 650, 240); 
       clearCurrent(screen); 
       fillNext(screen); 
      } 
      else if (hareX >= 985) 
      { 
       screen.setFont(new Font("Times New Roman", Font.ITALIC, 48)); 
       screen.drawString("Tortoise Wins", 650, 240); 
       clearCurrent(screen); 
       fillNext(screen); 
      } 
      else 
      {  
       screen.drawString(("Turn " + turnNum), 621, 55); 
       screen.setFont(new Font("Times New Roman", Font.ITALIC, 12)); 
       screen.drawString(tMove, 59, 65); screen.drawString(hMove, 66, 255); 
       clearCurrent(screen); 
       fillNext(screen); 
      } 

      stop(); 
     } 

     public void clearCurrent(Graphics s) 
     { 
      s.clearRect(tortX+1, tortY+1, WIDTH-1, HEIGHT-1); 
      s.clearRect(hareX+1, hareY+1, WIDTH-1, HEIGHT-1); 

     } 

     public void fillNext(Graphics s) 
     { 
      s.fillRect(tortX+1, tortY+1, WIDTH-1, HEIGHT-1); 
      s.fillRect(hareX+1, hareY+1, WIDTH-1, HEIGHT-1); 

     } 

     public void drawRace(Graphics s) 
     { 
      // GENERATES INITIAL GRAPHICS FOR RACE 
      s.drawRect(250, 100, 750, 50); 
      s.drawRect(250, 300, 750, 50); 
      int lineX = 265, lineYi = 100, lineYf = 150; 
      for (int i = 1; i <= 98; i++) 
      { 
       if (lineX == 1000) 
       { 
        lineX = 265; lineYi = 300; lineYf = 350; 
       } 
       s.drawLine(lineX, lineYi, lineX, lineYf); 
       lineX += 15; 
      } 
      s.fillRect(tortX+1, tortY+1, WIDTH-1, HEIGHT-1); 
      s.fillRect(hareX+1, hareY+1, WIDTH-1, HEIGHT-1); 
      s.drawImage(tortoise, 59, 80, this); 
      s.drawImage(hare, 66, 271, this); 
      s.setFont(new Font("Times New Roman", Font.BOLD, 24)); 
      s.drawString("Race", 250, 55); 
     } 

     public void delay() 
     { 
      for (int i = 0; i < 90000000; i++) 
      { 
      } 
     } 

     public void stop() 
     { 
     } 
    }

來源

2013-01-10 user1947236