java贪吃蛇动不了

wea111222333 2015-03-25 09:37:35

我按网上的一个网页写了一小部分但是蛇跑不起来求大神帮我看一下

package com.sgu.edu;

import java.awt.BorderLayout;

public class Board extends JFrame {

private JPanel contentPane;

private static final int Width=400; //窗口的宽度和高度
private static final int Height=400;
private static final int TileWidth=15; //每一格的宽度和高度
private static final int TileHeight=15; //在游戏在专门指每一个单元
private static final int Row=15; //游戏盘的行数和列数 Row是行 Column是列
private static final int Column=20;
private static final int XOffset=(Width-Column*TileWidth)/2; //当我们确定游戏盘大笑后
private static final int YOffset=(Height-Row*TileHeight)/2; //也就是蛇运动的区域，这个左上角的坐标叫
//XOffsethe YOffset,他就是左上角粉红色的点
private Snake mSnake; //蛇
private Board mBoard;
private Updater mUpdater; //刷新窗口让蛇动起来

/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Board frame = new Board();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});

}

/**
* Create the frame.
*/
public Board() {

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setResizable(false);
setSize(Width,Height);
setVisible(true);
//setBounds(100, 100, 450, 300);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
contentPane.setLayout(new BorderLayout(0, 0));
setContentPane(contentPane);

mSnake=new Snake(); //实例化蛇
mUpdater=new Updater(mBoard,mSnake);
mUpdater.start();

addWindowListener(new BoardHandler());
addKeyListener(new KeyHandler(mSnake));

}

public void paint(Graphics g){

drawDecoration(g);
drawSnake(g);
}

//画蛇的活动范围
public void drawDecoration(Graphics g){

g.setColor(Color.RED);
g.drawRect(XOffset, YOffset, Column*TileWidth, Column*TileHeight);
}

//画蛇
public void drawSnake(Graphics g){

g.setColor(Color.GREEN);
for(int i=0 ; i<mSnake.getLength() ; i++ ){
//获取蛇的某一节
Body body=mSnake.getBody(i);
//画出蛇的某一节
g.fillRect(body.col*TileWidth+XOffset, body.row*TileHeight+YOffset, TileWidth, TileHeight);
}
}

}

//关闭窗口
class BoardHandler extends WindowAdapter{

public void windowClosing(WindowEvent e){

System.exit(0);
}
}

//键盘监听
class KeyHandler extends KeyAdapter{

private Snake mSnake;
//操控蛇
public KeyHandler(Snake s){

mSnake=s;
}
//对案件进行响应
public void keyPressed(KeyEvent e){

switch(e.getKeyCode()){

case KeyEvent.VK_UP:
mSnake.setDirection(DIRECTION.UP);
break;
case KeyEvent.VK_DOWN:
mSnake.setDirection(DIRECTION.DOWN);
break;
case KeyEvent.VK_LEFT:
mSnake.setDirection(DIRECTION.LEFT);
break;
case KeyEvent.VK_RIGHT:
mSnake.setDirection(DIRECTION.RIGHT);
break;

}

}
}

package com.sgu.edu;

import java.util.ArrayList;
import java.util.List;

enum DIRECTION{

UP,DOWN,LEFT,RIGHT;
}

public class Snake {

private List<Body> mBody;
private DIRECTION mDirection;

//初始化蛇为4节身体开始方向向右
public Snake(){

mBody=new ArrayList<Body>();
/*mBody.add(new Body(7,4));
mBody.add(new Body(7,3));
mBody.add(new Body(7,2)); //重置功能
mBody.add(new Body(7,1));
mDirection=DIRECTION.RIGHT;*/
reset();

}

//移动
public void move(Board b){

Body head;
Body headold=mBody.get(0); // 表示当前脑袋的对象
//根据方向定蛇头坐标
switch(mDirection)
{
case UP:
head=new Body(headold.row-1,headold.col);
break;
case DOWN:
head=new Body(headold.row+1,headold.col);
break;
case LEFT:
head=new Body(headold.row,headold.col-1);
break;
case RIGHT:
head=new Body(headold.row,headold.col+1);
break;
default:
head=new Body(0,0);
break;
}
mBody.add(0,head); //添加蛇头
mBody.remove(mBody.size()-1); //把尾巴移除

}

//转向
public void setDirection(DIRECTION d){

mDirection=d;
}

//重置
public void reset(){

mBody.clear();
mBody.add(new Body(7,4));
mBody.add(new Body(7,3));
mBody.add(new Body(7,2));
mBody.add(new Body(7,1));
mDirection=DIRECTION.RIGHT;
}

//获取蛇的某一节
public Body getBody(int index){

return mBody.get(index);
}

//获取蛇的长度
public int getLength(){

return mBody.size();
}

}

package com.sgu.edu;

public class Body {

public int row;
public int col;

public Body(int row , int col){

this.row=row;
this.col=col;
}

}

package com.sgu.edu;

public class Updater extends Thread {

private Board mBoard;
private Snake mSnake;

public Updater(Board b , Snake s){

mBoard=b;
mSnake=s;
}

public void run(){

while(true){

mSnake.move(mBoard);
mBoard.repaint();
try{
sleep(500); // 线程暂停500毫秒，
}catch(Exception e){
System.out.println(e.toString());
}
}
}

}

...全文