原帖及讨论：http://bbs.bc-cn.net/dispbbs.asp?boardid=8&id=100035

//做的不太好 有点白痴 没有什么扩展功能  请多多批评
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
public class TestSneak extends JPanel implements KeyListener,Runnable{
  
  final int width=30;
  final int height=20;
  int x=0,y=0;
  int a[][]=new int[21][31];
  int direction=4;
  final int up=1;
  final int down=3;
  final int left=2;
  final int right=4;
  final int length=8;//初始化长度
  final int initx=8;
  final int inity=5;
  Node node;
  Thread thread;
  Food food=new Food();
  LinkedList linklist;
  SpecialThread st;
  int count;
  
  boolean pause=true;
  public TestSneak(){
      this.setBackground(Color.black);
  //this.setSize(400,320);
     this.addKeyListener(this);
    this.setLayout(new BorderLayout());
    this.setOpaque(true);

  }
  
  public void init()
  {
       arrayIni();
       direction=4;
       count=0;
       linklist=new LinkedList();
      
       for(int i=10;i>=inity;i--)
       {
           node=new Node(initx,i);
           a[initx]=1;
           linklist.add(node);
          
       }
       for(int j=0;j<=30;j++){
           a[0][j]=3;
           a[20][j]=3;
       }
       for(int i=0;i<=20;i++){
           a[0]=3;
           a[30]=3;
       }
      

      
       this.creatFood();
  }
  public void arrayIni()
  {
      for(int i=0;i<20;i++)
      {
          for(int j=0;j<30;j++)
          {
              a[j]=0;
          }
      }
  }
  public void creatFood()
  {
      do
       food.creatFood();
       while(a[food.randomx][food.randomy]==1||a[food.randomx][food.randomy]==3);
       a[food.randomx][food.randomy]=2;
       count++;
       ///label.setText(String.valueOf(count));
  }
  

  
  
  public void changeDirection(int i)
  {
      if((i%