求"贪吃蛇"小游戏JAVA源代码一份

贪吃蛇

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import java.awt.*;

import java.awt.event.*;

public class GreedSnake //主类

{

/**

* @param args

*/

public static void main(String[] args) {

// TODO Auto-generated method stub

new MyWindow();

}

}

class MyPanel extends Panel implements KeyListener,Runnable//自定义面板类，继承了键盘和线程接口

{

Button snake[]; //定义蛇按钮

int shu=0; //蛇的节数

int food[]; //食物数组

boolean result=true; //判定结果是输 还是赢

Thread thread; //定义线程

static int weix,weiy; //食物位置

boolean t=true; //判定游戏是否结束

int fangxiang=0; //蛇移动方向

int x=0,y=0; //蛇头位置

MyPanel()

{

setLayout(null);

snake=new Button[20];

food=new int [20];

thread=new Thread(this);

for(int j=0;j20;j++)

{

food[j]=(int)(Math.random()*99);//定义20个随机食物

}

weix=(int)(food[0]*0.1)*60; //十位*60为横坐标

weiy=(int)(food[0]%10)*40; //个位*40为纵坐标

for(int i=0;i20;i++)

{

snake[i]=new Button();

}

add(snake[0]);

snake[0].setBackground(Color.black);

snake[0].addKeyListener(this); //为蛇头添加键盘监视器

snake[0].setBounds(0,0,10,10);

setBackground(Color.cyan);

}

public void run() //接收线程

{

while(t)

{

if(fangxiang==0)//向右

{

try

{

x+=10;

snake[0].setLocation(x, y);//设置蛇头位置

if(x==weixy==weiy) //吃到食物

{

shu++;

weix=(int)(food[shu]*0.1)*60;

weiy=(int)(food[shu]%10)*40;

repaint(); //重绘下一个食物

add(snake[shu]); //增加蛇节数和位置

snake[shu].setBounds(snake[shu-1].getBounds());

}

thread.sleep(100); //睡眠100ms

}

catch(Exception e){}

}

else if(fangxiang==1)//向左

{

try

{

x-=10;

snake[0].setLocation(x, y);

if(x==weixy==weiy)

{

shu++;

weix=(int)(food[shu]*0.1)*60;

weiy=(int)(food[shu]%10)*40;

repaint();

add(snake[shu]);

snake[shu].setBounds(snake[shu-1].getBounds());

}

thread.sleep(100);

}

catch(Exception e){}

}

else if(fangxiang==2)//向上

{

try

{

y-=10;

snake[0].setLocation(x, y);

if(x==weixy==weiy)

{

shu++;

weix=(int)(food[shu]*0.1)*60;

weiy=(int)(food[shu]%10)*40;

repaint();

add(snake[shu]);

snake[shu].setBounds(snake[shu-1].getBounds());

}

thread.sleep(100);

}

catch(Exception e){}

}

else if(fangxiang==3)//向下

{

try

{

y+=10;

snake[0].setLocation(x, y);

if(x==weixy==weiy)

{

shu++;

weix=(int)(food[shu]*0.1)*60;

weiy=(int)(food[shu]%10)*40;

repaint();

add(snake[shu]);

snake[shu].setBounds(snake[shu-1].getBounds());

}

thread.sleep(100);

}

catch(Exception e){}

}

int num1=shu;

while(num11)//判断是否咬自己的尾巴

{

if(snake[num1].getBounds().x==snake[0].getBounds().xsnake[num1].getBounds().y==snake[0].getBounds().y)

{

t=false;

result=false;

repaint();

}

num1--;

}

if(x0||x=this.getWidth()||y0||y=this.getHeight())//判断是否撞墙

{

t=false;

result=false;

repaint();

}

int num=shu;

while(num0) //设置蛇节位置

{

snake[num].setBounds(snake[num-1].getBounds());

num--;

}

if(shu==15) //如果蛇节数等于15则胜利

{

t=false;

result=true;

repaint();

}

}

}

public void keyPressed(KeyEvent e) //按下键盘方向键

{

if(e.getKeyCode()==KeyEvent.VK_RIGHT)//右键

{

if(fangxiang!=1)//如果先前方向不为左

fangxiang=0;

}

else if(e.getKeyCode()==KeyEvent.VK_LEFT)

{ if(fangxiang!=0)

fangxiang=1;

}

else if(e.getKeyCode()==KeyEvent.VK_UP)

{ if(fangxiang!=3)

fangxiang=2;

}

else if(e.getKeyCode()==KeyEvent.VK_DOWN)

{ if(fangxiang!=2)

fangxiang=3;

}

}

public void keyTyped(KeyEvent e)

{

}

public void keyReleased(KeyEvent e)

{

}

public void paint(Graphics g) //在面板上绘图

{

int x1=this.getWidth()-1;

int y1=this.getHeight()-1;

g.setColor(Color.red);

g.fillOval(weix, weiy, 10, 10);//食物

g.drawRect(0, 0, x1, y1); //墙

if(t==falseresult==false)

g.drawString("GAME OVER!", 250, 200);//输出游戏失败

else if(t==falseresult==true)

g.drawString("YOU WIN!", 250, 200);//输出游戏成功

}

}

class MyWindow extends Frame implements ActionListener//自定义窗口类

{

MyPanel my;

Button btn;

Panel panel;

MyWindow()

{

super("GreedSnake");

my=new MyPanel();

btn=new Button("begin");

panel=new Panel();

btn.addActionListener(this);

panel.add(new Label("begin后请按Tab键选定蛇"));

panel.add(btn);

panel.add(new Label("按上下左右键控制蛇行动"));

add(panel,BorderLayout.NORTH);

add(my,BorderLayout.CENTER);

setBounds(100,100,610,500);

setVisible(true);

validate();

addWindowListener(new WindowAdapter()

{

public void windowClosing(WindowEvent e)

{

System.exit(0);

}

});

}

public void actionPerformed(ActionEvent e)//按下begin按钮

{

if(e.getSource()==btn)

{

try

{

my.thread.start(); //开始线程

my.validate();

}

catch(Exception ee){}

}

}

}

求java贪吃蛇的编程，并有注释

J2ME贪吃蛇源代码——200行左右，包含详细注释 package snake;import javax.microedition.midlet.*;

import javax.microedition.lcdui.*;public class SnakeMIDlet extends MIDlet {

SnakeCanvas displayable = new SnakeCanvas();

public SnakeMIDlet() {

Display.getDisplay(this).setCurrent(displayable);

}public void startApp() {}public void pauseApp() {}public void destroyApp(boolean unconditional) {}}//文件名：SnakeCanvas.javapackage snake;import java.util.*;

import javax.microedition.lcdui.*;/**

* 贪吃蛇游戏

*/

public class SnakeCanvas extends Canvas implements Runnable{

/**存储贪吃蛇节点坐标,其中第二维下标为0的代表x坐标，第二维下标是1的代表y坐标*/

int[][] snake = new int[200][2];

/**已经使用的节点数量*/

int snakeNum;

/**贪吃蛇运动方向,0代表向上，1代表向下,2代表向左,3代表向右*/

int direction;

/*移动方向*/

/**向上*/

private final int DIRECTION_UP = 0;

/**向下*/

private final int DIRECTION_DOWN = 1;

/**向左*/

private final int DIRECTION_LEFT = 2;

/**向右*/

private final int DIRECTION_RIGHT = 3;/**游戏区域宽度*/

int width;

/**游戏区域高度*/

int height;/**蛇身单元宽度*/

private final byte SNAKEWIDTH = 4;/**是否处于暂停状态,true代表暂停*/

boolean isPaused = false;

/**是否处于运行状态,true代表运行*/

boolean isRun = true;/**时间间隔*/

private final int SLEEP_TIME = 300;

/**食物的X坐标*/

int foodX;

/**食物的Y坐标*/

int foodY;

/**食物的闪烁控制*/

boolean b = true;

/**Random对象*/

Random random = new Random();

public SnakeCanvas() {

//初始化

init();

width = this.getWidth();

height = this.getHeight();

//启动线程

new Thread(this).start();

}/**

* 初始化开始数据

*/

private void init(){

//初始化节点数量

snakeNum = 7;

//初始化节点数据

for(int i = 0;i snakeNum;i++){

snake[i][0] = 100 - SNAKEWIDTH * i;

snake[i][1] = 40;

}

//初始化移动方向

direction = DIRECTION_RIGHT;

//初始化食物坐标

foodX = 100;

foodY = 100;

}protected void paint(Graphics g) {

//清屏

g.setColor(0xffffff);

g.fillRect(0,0,width,height);

g.setColor(0);//绘制蛇身

for(int i = 0;i snakeNum;i++){

g.fillRect(snake[i][0],snake[i][1],SNAKEWIDTH,SNAKEWIDTH);

}

//绘制食物

if(b){

g.fillRect(foodX,foodY,SNAKEWIDTH,SNAKEWIDTH);

}

}private void move(int direction){

//蛇身移动

for(int i = snakeNum - 1;i 0;i--){

snake[i][0] = snake[i - 1][0];

snake[i][1] = snake[i - 1][1];

}//第一个单元格移动

switch(direction){

case DIRECTION_UP:

snake[0][1] = snake[0][1] - SNAKEWIDTH;

break;

case DIRECTION_DOWN:

snake[0][1] = snake[0][1] + SNAKEWIDTH;

break;

case DIRECTION_LEFT:

snake[0][0] = snake[0][0] - SNAKEWIDTH;

break;

case DIRECTION_RIGHT:

snake[0][0] = snake[0][0] + SNAKEWIDTH;

break;

}

}

/**

* 吃掉食物，自身增长

*/

private void eatFood(){

//判别蛇头是否和食物重叠

if(snake[0][0] == foodX snake[0][1] == foodY){

snakeNum++;

generateFood();

}

}

/**

* 产生食物

* 说明：食物的坐标必须位于屏幕内，且不能和蛇身重合

*/

private void generateFood(){

while(true){

foodX = Math.abs(random.nextInt() % (width - SNAKEWIDTH + 1))

/ SNAKEWIDTH * SNAKEWIDTH;

foodY = Math.abs(random.nextInt() % (height - SNAKEWIDTH + 1))

/ SNAKEWIDTH * SNAKEWIDTH;

boolean b = true;

for(int i = 0;i snakeNum;i++){

if(foodX == snake[i][0] snake[i][1] == foodY){

b = false;

break;

}

}

if(b){

break;

}

}

}

/**

* 判断游戏是否结束

* 结束条件：

* 1、蛇头超出边界

* 2、蛇头碰到自身

*/

private boolean isGameOver(){

//边界判别

if(snake[0][0] 0 || snake[0][0] (width - SNAKEWIDTH) ||

snake[0][1] 0 || snake[0][1] (height - SNAKEWIDTH)){

return true;

}

//碰到自身

for(int i = 4;i snakeNum;i++){

if(snake[0][0] == snake[i][0]

snake[0][1] == snake[i][1]){

return true;

}

}

return false;

}/**

* 事件处理

*/

public void keyPressed(int keyCode){

int action = this.getGameAction(keyCode);

//改变方向

switch(action){

case UP:

if(direction != DIRECTION_DOWN){

direction = DIRECTION_UP;

}

break;

case DOWN:

if(direction != DIRECTION_UP){

direction = DIRECTION_DOWN;

}

break;

case LEFT:

if(direction != DIRECTION_RIGHT){

direction = DIRECTION_LEFT;

}

break;

case RIGHT:

if(direction != DIRECTION_LEFT){

direction = DIRECTION_RIGHT;

}

break;

case FIRE:

//暂停和继续

isPaused = !isPaused;

break;

}

}/**

* 线程方法

* 使用精确延时

*/

public void run(){

try{

while (isRun) {

//开始时间

long start = System.currentTimeMillis();

if(!isPaused){

//吃食物

eatFood();

//移动

move(direction);

//结束游戏

if(isGameOver()){

break;

}

//控制闪烁

b = !b;

}

//重新绘制

repaint();

long end = System.currentTimeMillis();

//延时

if(end - start SLEEP_TIME){

Thread.sleep(SLEEP_TIME - (end - start));

}

}

}catch(Exception e){}

}

}

高分跪求用Java编写的贪吃蛇源代码！具体要求看问题补充！急急急~~~544266616@qq.com

import java.awt.Graphics;

import java.awt.Toolkit;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.InputEvent;

import java.awt.event.KeyEvent;

import java.awt.event.KeyListener;

import javax.swing.JCheckBoxMenuItem;

import javax.swing.JFrame;

import javax.swing.JMenu;

import javax.swing.JMenuBar;

import javax.swing.JMenuItem;

import javax.swing.JOptionPane;

import javax.swing.KeyStroke;

public class 贪吃蛇 extends JFrame implements ActionListener, KeyListener,Runnable {

/**

*

*/

private static final long serialVersionUID = 1L;

private JMenuBar menuBar;

private JMenu youXiMenu,nanDuMenu,fenShuMenu,guanYuMenu;

private JMenuItem kaiShiYouXi,exitItem,zuoZheItem,fenShuItem;

private JCheckBoxMenuItem cJianDan,cPuTong,cKunNan;

private int length = 6;

private Toolkit toolkit;

private int i,x,y,z,objectX,objectY,object=0,growth=0,time;//bojectX,Y

private int m[]=new int[50];

private int n[]=new int[50];

private Thread she = null;

private int life=0;

private int foods = 0;

private int fenshu=0;

public void run(){

time=500;

for(i=0;i=length-1;i++)

{

m[i]=90-i*10;n[i]=60;

}

x=m[0];

y=n[0];

z=4;

while(she!=null)

{

check();

try

{

Thread.sleep(time);

}

catch(Exception ee)

{

System.out.println(z+"");

}

}

}

public 贪吃蛇() {

setVisible(true);

menuBar = new JMenuBar();

toolkit=getToolkit();

youXiMenu = new JMenu("游戏");

kaiShiYouXi = new JMenuItem("开始游戏");

exitItem = new JMenuItem("退出游戏");

nanDuMenu = new JMenu("困难程度");

cJianDan = new JCheckBoxMenuItem("简单");

cPuTong = new JCheckBoxMenuItem("普通");

cKunNan = new JCheckBoxMenuItem("困难");

fenShuMenu = new JMenu("积分排行");

fenShuItem = new JMenuItem("最高记录");

guanYuMenu = new JMenu("关于");

zuoZheItem = new JMenuItem("关于作者");

guanYuMenu.add(zuoZheItem);

nanDuMenu.add(cJianDan);

nanDuMenu.add(cPuTong);

nanDuMenu.add(cKunNan);

fenShuMenu.add(fenShuItem);

youXiMenu.add(kaiShiYouXi);

youXiMenu.add(exitItem);

menuBar.add(youXiMenu);

menuBar.add(nanDuMenu);

menuBar.add(fenShuMenu);

menuBar.add(guanYuMenu);

zuoZheItem.addActionListener(this);

kaiShiYouXi.addActionListener(this);

exitItem.addActionListener(this);

addKeyListener(this);

fenShuItem.addActionListener(this);

KeyStroke keyOpen = KeyStroke.getKeyStroke('O',InputEvent.CTRL_DOWN_MASK);

kaiShiYouXi.setAccelerator(keyOpen);

KeyStroke keyExit = KeyStroke.getKeyStroke('X',InputEvent.CTRL_DOWN_MASK);

exitItem.setAccelerator(keyExit);

setJMenuBar(menuBar);

setTitle("贪吃蛇");

setResizable(false);

setBounds(300,200,400,400);

validate();

setDefaultCloseOperation(EXIT_ON_CLOSE);

}

public static void main(String args[]) {

new 贪吃蛇();

}

public void actionPerformed(ActionEvent e){

if(e.getSource()==kaiShiYouXi)

{

length = 6;

life = 0;

foods = 0;

if(she==null)

{

she=new Thread(this);

she.start();

}

else if(she!=null)

{

she=null;

she= new Thread(this);

she.start();

}

}

if(e.getSource()==exitItem)

{

System.exit(0);

}

if(e.getSource()==zuoZheItem)

{

JOptionPane.showMessageDialog(this, "孤独的野狼制作"+"\n\n"+" "+"QQ号:2442701497"+"\n");

}

if(e.getSource()==fenShuItem)

{

JOptionPane.showMessageDialog(this,"最高记录为"+fenshu+"");

}

}

public void check(){

isDead();

if(she!=null)

{

if(growth==0)

{

reform(); //得到食物

}

else

{

upgrowth(); //生成食物

}

if(x==objectXy==objectY)

{

object=0;

growth=1;

toolkit.beep();

}

if(object==0)

{

object=1;

objectX=(int)Math.floor(Math.random()*39)*10;

objectY=(int)Math.floor(Math.random()*29)*10+50;

}

this.repaint(); //重绘

}

}

void isDead()

{

//判断游戏是否结束的方法

if(z==4)

{

x=x+10;

}

else if(z==3)

{

x=x-10;

}

else if(z==2)

{

y=y+10;

}

else if(z==1)

{

y=y-10;

}

if(x0||x390||y50||y390)

{

she=null;

}

for(i=1;ilength;i++)

{

if(m[i]==xn[i]==y)

{

she=null;

}

}

}

public void upgrowth()

{

//当蛇吃到东西时的方法

if(length50)

{

length++;

}

growth--;

time=time-10;

reform();

life+=100;

if(fenshulife)

{

fenshu = life;

}

foods++;

}

public void reform()

{

for(i=length-1;i0;i--)

{

m[i]=m[i-1];

n[i]=n[i-1];

}

if(z==4)

{

m[0]=m[0]+10;

}

if(z==3)

{

m[0]=m[0]-10;

}

if(z==2)

{

n[0]=n[0]+10;

}

if(z==1)

{

n[0]=n[0]-10;

}

}

public void keyPressed(KeyEvent e)

{

if(she!=null)

{

if(e.getKeyCode()==KeyEvent.VK_UP)

{

if(z!=2)

{

z=1;

check();

}

}

else if(e.getKeyCode()==KeyEvent.VK_DOWN)

{

if(z!=1)

{

z=2;

check();

}

}

else if(e.getKeyCode()==KeyEvent.VK_LEFT)

{

if(z!=4)

{

z=3;

check();

}

}

else if(e.getKeyCode()==KeyEvent.VK_RIGHT)

{

if(z!=3)

{

z=4;

check();

}

}

}

}

public void keyReleased(KeyEvent e)

{

}

public void keyTyped(KeyEvent e)

{

}

public void paint(Graphics g) {

g.setColor(Color.DARK_GRAY); //设置背景

g.fillRect(0,50,400,400);

g.setColor(Color.pink);

for(i=0;i=length-1;i++)

{

g.fillRect(m[i],n[i],10,10);

}

g.setColor(Color.green); //蛇的食物

g.fillRect(objectX,objectY,10,10);

g.setColor(Color.white);

g.drawString("当前 分数"+this.life,6,60);

g.drawString("当前已吃食物数"+this.foods,6,72);

}

}

求一段JAVA编写的贪吃蛇小程序源代码

用MVC方式实现的贪吃蛇游戏，共有4个类。运行GreedSnake运行即可。主要是观察者模式的使用，我已经添加了很多注释了。

1、

/*

* 程序名称：贪食蛇

* 原作者：BigF

* 修改者：algo

* 说明：我以前也用C写过这个程序，现在看到BigF用Java写的这个，发现虽然作者自称是Java的初学者，

* 但是明显编写程序的素养不错，程序结构写得很清晰，有些细微得地方也写得很简洁，一时兴起之

* 下，我认真解读了这个程序，发现数据和表现分开得很好，而我近日正在学习MVC设计模式，

* 因此尝试把程序得结构改了一下，用MVC模式来实现，对源程序得改动不多。

* 我同时也为程序增加了一些自己理解得注释，希望对大家阅读有帮助。

*/

package mvcTest;

/**

* @author WangYu

* @version 1.0

* Description:

* /pre

* Create on :Date :2005-6-13 Time:15:57:16

* LastModified:

* History:

*/

public class GreedSnake {

public static void main(String[] args) {

SnakeModel model = new SnakeModel(20,30);

SnakeControl control = new SnakeControl(model);

SnakeView view = new SnakeView(model,control);

//添加一个观察者，让view成为model的观察者

model.addObserver(view);

(new Thread(model)).start();

}

}

-------------------------------------------------------------

2、

package mvcTest;

//SnakeControl.java

import java.awt.event.KeyEvent;

import java.awt.event.KeyListener;

/**

* MVC中的Controler，负责接收用户的操作，并把用户操作通知Model

*/

public class SnakeControl implements KeyListener{

SnakeModel model;

public SnakeControl(SnakeModel model){

this.model = model;

}

public void keyPressed(KeyEvent e) {

int keyCode = e.getKeyCode();

if (model.running){ // 运行状态下，处理的按键

switch (keyCode) {

case KeyEvent.VK_UP:

model.changeDirection(SnakeModel.UP);

break;

case KeyEvent.VK_DOWN:

model.changeDirection(SnakeModel.DOWN);

break;

case KeyEvent.VK_LEFT:

model.changeDirection(SnakeModel.LEFT);

break;

case KeyEvent.VK_RIGHT:

model.changeDirection(SnakeModel.RIGHT);

break;

case KeyEvent.VK_ADD:

case KeyEvent.VK_PAGE_UP:

model.speedUp();

break;

case KeyEvent.VK_SUBTRACT:

case KeyEvent.VK_PAGE_DOWN:

model.speedDown();

break;

case KeyEvent.VK_SPACE:

case KeyEvent.VK_P:

model.changePauseState();

break;

default:

}

}

// 任何情况下处理的按键，按键导致重新启动游戏

if (keyCode == KeyEvent.VK_R ||

keyCode == KeyEvent.VK_S ||

keyCode == KeyEvent.VK_ENTER) {

model.reset();

}

}

public void keyReleased(KeyEvent e) {

}

public void keyTyped(KeyEvent e) {

}

}

-------------------------------------------------------------

3、

/*

*

*/

package mvcTest;

/**

* 游戏的Model类，负责所有游戏相关数据及运行

* @author WangYu

* @version 1.0

* Description:

* /pre

* Create on :Date :2005-6-13 Time:15:58:33

* LastModified:

* History:

*/

//SnakeModel.java

import javax.swing.*;

import java.util.Arrays;

import java.util.LinkedList;

import java.util.Observable;

import java.util.Random;

/**

* 游戏的Model类，负责所有游戏相关数据及运行

*/

class SnakeModel extends Observable implements Runnable {

boolean[][] matrix; // 指示位置上有没蛇体或食物

LinkedList nodeArray = new LinkedList(); // 蛇体

Node food;

int maxX;

int maxY;

int direction = 2; // 蛇运行的方向

boolean running = false; // 运行状态

int timeInterval = 200; // 时间间隔，毫秒

double speedChangeRate = 0.75; // 每次得速度变化率

boolean paused = false; // 暂停标志

int score = 0; // 得分

int countMove = 0; // 吃到食物前移动的次数

// UP and DOWN should be even

// RIGHT and LEFT should be odd

public static final int UP = 2;

public static final int DOWN = 4;

public static final int LEFT = 1;

public static final int RIGHT = 3;

public SnakeModel( int maxX, int maxY) {

this.maxX = maxX;

this.maxY = maxY;

reset();

}

public void reset(){

direction = SnakeModel.UP; // 蛇运行的方向

timeInterval = 200; // 时间间隔，毫秒

paused = false; // 暂停标志

score = 0; // 得分

countMove = 0; // 吃到食物前移动的次数

// initial matirx, 全部清0

matrix = new boolean[maxX][];

for (int i = 0; i maxX; ++i) {

matrix[i] = new boolean[maxY];

Arrays.fill(matrix[i], false);

}

// initial the snake

// 初始化蛇体，如果横向位置超过20个，长度为10，否则为横向位置的一半

int initArrayLength = maxX 20 ? 10 : maxX / 2;

nodeArray.clear();

for (int i = 0; i initArrayLength; ++i) {

int x = maxX / 2 + i;//maxX被初始化为20

int y = maxY / 2; //maxY被初始化为30

//nodeArray[x,y]: [10,15]-[11,15]-[12，15]~~[20,15]

//默认的运行方向向上，所以游戏一开始nodeArray就变为：

// [10，14]-[10，15]-[11，15]-[12，15]~~[19，15]

nodeArray.addLast(new Node(x, y));

matrix[x][y] = true;

}

// 创建食物

food = createFood();

matrix[food.x][food.y] = true;

}

public void changeDirection(int newDirection) {

// 改变的方向不能与原来方向同向或反向

if (direction % 2 != newDirection % 2) {

direction = newDirection;

}

}

/**

* 运行一次

* @return

*/

public boolean moveOn() {

Node n = (Node) nodeArray.getFirst();

int x = n.x;

int y = n.y;

// 根据方向增减坐标值

switch (direction) {

case UP:

y--;

break;

case DOWN:

y++;

break;

case LEFT:

x--;

break;

case RIGHT:

x++;

break;

}

// 如果新坐标落在有效范围内，则进行处理

if ((0 = x x maxX) (0 = y y maxY)) {

if (matrix[x][y]) { // 如果新坐标的点上有东西（蛇体或者食物）

if (x == food.x y == food.y) { // 吃到食物，成功

nodeArray.addFirst(food); // 从蛇头赠长

// 分数规则，与移动改变方向的次数和速度两个元素有关

int scoreGet = (10000 - 200 * countMove) / timeInterval;

score += scoreGet 0 ? scoreGet : 10;

countMove = 0;

food = createFood(); // 创建新的食物

matrix[food.x][food.y] = true; // 设置食物所在位置

return true;

} else // 吃到蛇体自身，失败

return false;

} else { // 如果新坐标的点上没有东西（蛇体），移动蛇体

nodeArray.addFirst(new Node(x, y));

matrix[x][y] = true;

n = (Node) nodeArray.removeLast();

matrix[n.x][n.y] = false;

countMove++;

return true;

}

}

return false; // 触到边线，失败

}

public void run() {

running = true;

while (running) {

try {

Thread.sleep(timeInterval);

} catch (Exception e) {

break;

}

if (!paused) {

if (moveOn()) {

setChanged(); // Model通知View数据已经更新

notifyObservers();

} else {

JOptionPane.showMessageDialog(null,

"you failed",

"Game Over",

JOptionPane.INFORMATION_MESSAGE);

break;

}

}

}

running = false;

}

private Node createFood() {

int x = 0;

int y = 0;

// 随机获取一个有效区域内的与蛇体和食物不重叠的位置

do {

Random r = new Random();

x = r.nextInt(maxX);

y = r.nextInt(maxY);

} while (matrix[x][y]);

return new Node(x, y);

}

public void speedUp() {

timeInterval *= speedChangeRate;

}

public void speedDown() {

timeInterval /= speedChangeRate;

}

public void changePauseState() {

paused = !paused;

}

public String toString() {

String result = "";

for (int i = 0; i nodeArray.size(); ++i) {

Node n = (Node) nodeArray.get(i);

result += "[" + n.x + "," + n.y + "]";

}

return result;

}

}

class Node {

int x;

int y;

Node(int x, int y) {

this.x = x;

this.y = y;

}

}

------------------------------------------------------------

4、

package mvcTest;

//SnakeView.java

import javax.swing.*;

import java.awt.*;

import java.util.Iterator;

import java.util.LinkedList;

import java.util.Observable;

import java.util.Observer;

/**

* MVC模式中得Viewer，只负责对数据的显示,而不用理会游戏的控制逻辑

*/

public class SnakeView implements Observer {

SnakeControl control = null;

SnakeModel model = null;

JFrame mainFrame;

Canvas paintCanvas;

JLabel labelScore;

public static final int canvasWidth = 200;

public static final int canvasHeight = 300;

public static final int nodeWidth = 10;

public static final int nodeHeight = 10;

public SnakeView(SnakeModel model, SnakeControl control) {

this.model = model;

this.control = control;

mainFrame = new JFrame("GreedSnake");

Container cp = mainFrame.getContentPane();

// 创建顶部的分数显示

labelScore = new JLabel("Score:");

cp.add(labelScore, BorderLayout.NORTH);

// 创建中间的游戏显示区域

paintCanvas = new Canvas();

paintCanvas.setSize(canvasWidth + 1, canvasHeight + 1);

paintCanvas.addKeyListener(control);

cp.add(paintCanvas, BorderLayout.CENTER);

// 创建底下的帮助栏

JPanel panelButtom = new JPanel();

panelButtom.setLayout(new BorderLayout());

JLabel labelHelp;

labelHelp = new JLabel("PageUp, PageDown for speed;", JLabel.CENTER);

panelButtom.add(labelHelp, BorderLayout.NORTH);

labelHelp = new JLabel("ENTER or R or S for start;", JLabel.CENTER);

panelButtom.add(labelHelp, BorderLayout.CENTER);

labelHelp = new JLabel("SPACE or P for pause", JLabel.CENTER);

panelButtom.add(labelHelp, BorderLayout.SOUTH);

cp.add(panelButtom, BorderLayout.SOUTH);

mainFrame.addKeyListener(control);

mainFrame.pack();

mainFrame.setResizable(false);

mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

mainFrame.setVisible(true);

}

void repaint() {

Graphics g = paintCanvas.getGraphics();

//draw background

g.setColor(Color.WHITE);

g.fillRect(0, 0, canvasWidth, canvasHeight);

// draw the snake

g.setColor(Color.BLACK);

LinkedList na = model.nodeArray;

Iterator it = na.iterator();

while (it.hasNext()) {

Node n = (Node) it.next();

drawNode(g, n);

}

// draw the food

g.setColor(Color.RED);

Node n = model.food;

drawNode(g, n);

updateScore();

}

private void drawNode(Graphics g, Node n) {

g.fillRect(n.x * nodeWidth,

n.y * nodeHeight,

nodeWidth - 1,

nodeHeight - 1);

}

public void updateScore() {

String s = "Score: " + model.score;

labelScore.setText(s);

}

public void update(Observable o, Object arg) {

repaint();

}

}

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