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。

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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();

}

}

希望采纳

java贪吃蛇问题，求大神解答

SnackAct temp=new SnackAct(); 这个是蛇的对象吗？ 如果是你每次吃到东西的时候都会新创建一个蛇，再把尾部加上1个 所以蛇身长度一直都没变化。一直都是原长度+1.

哪位能告诉我贪吃蛇游戏的全部代码？

//package main;

import java.awt.Color;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.KeyEvent;

import java.awt.event.KeyListener;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import java.io.BufferedReader;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.InputStreamReader;

import javax.swing.ImageIcon;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JMenu;

import javax.swing.JMenuBar;

import javax.swing.JMenuItem;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

public class TanChiShe implements KeyListener,ActionListener{

/**

* @param args

*/

int max = 300;//蛇长最大值

final int JianJu = 15; //设定蛇的运动网格间距（窗口最大32*28格）

byte fangXiang = 4; //控制蛇的运动方向,初始为右

int time = 500; //蛇的运动间隔时间

int jianTime = 2;//吃一个减少的时间

int x,y;//蛇的运动坐标，按网格来算

int x2,y2;//暂存蛇头的坐标

int jiFenQi = 0;//积分器

boolean isRuned = false;//没运行才可设级别

boolean out = false;//没开始运行?

boolean run = false;//暂停运行

String JiBie = "中级";

JFrame f = new JFrame("贪吃蛇 V1.0");

JPanel show = new JPanel();

JLabel Message = new JLabel("级别：中级 蛇长：5 时间500ms 分数:00");

// JButton play = new JButton("开始");

JLabel sheTou;

JLabel shiWu;

JLabel sheWei[] = new JLabel[max];

static int diJi = 4; //第几个下标的蛇尾要被加上

ImageIcon shang = new ImageIcon("tuPian\\isSheTouUp.png");//产生四个上下左右的蛇头图案

ImageIcon xia = new ImageIcon("tuPian\\isSheTouDown.png");

ImageIcon zhuo = new ImageIcon("tuPian\\isSheTouLeft.png");

ImageIcon you = new ImageIcon("tuPian\\isSheTouRight.png");

JMenuBar JMB = new JMenuBar();

JMenu file = new JMenu("开始游戏");

JMenuItem play = new JMenuItem(" 开始游戏 ");

JMenuItem pause = new JMenuItem(" 暂停游戏 ");

JMenu hard = new JMenu("游戏难度");

JMenuItem gao = new JMenuItem("高级");

JMenuItem zhong = new JMenuItem("中级");

JMenuItem di = new JMenuItem("低级");

JMenu about = new JMenu(" 关于 ");

JMenuItem GF = new JMenuItem("※高分榜");

JMenuItem ZZ = new JMenuItem("关于作者");

JMenuItem YX = new JMenuItem("关于游戏");

JMenuItem QK = new JMenuItem("清空记录");

static TanChiShe tcs = new TanChiShe();

public static void main(String[] args) {

// TanChiShe tcs = new TanChiShe();

tcs.f();

}

public void f(){

f.setBounds(250,100,515,530);

f.setLayout(null);

f.setAlwaysOnTop(true);//窗口始终保持最前面

f.setBackground(new Color(0,0,0));

f.setDefaultCloseOperation(0);

f.setResizable(false);

f.setVisible(true);

// f.getContentPane().setBackground(Color.BLACK);

f.addWindowListener(new WindowAdapter(){

public void windowClosing(WindowEvent e){

System.exit(0);//退出程序

}

});

f.setJMenuBar(JMB);

JMB.add(file);

file.add(play);

file.add(pause);

JMB.add(hard);

hard.add(gao);

hard.add(zhong);

hard.add(di);

JMB.add(about);

about.add(GF);

GF.setForeground(Color.blue);

about.add(ZZ);

about.add(YX);

about.add(QK);

QK.setForeground(Color.red);

f.add(show);

show.setBounds(0,f.getHeight()-92,f.getWidth(),35);

// show.setBackground(Color.green);

// f.add(play);

// play.setBounds(240,240,80,25);

play.addActionListener(this);

pause.addActionListener(this);

gao.addActionListener(this);

zhong.addActionListener(this);

di.addActionListener(this);

GF.addActionListener(this);

ZZ.addActionListener(this);

YX.addActionListener(this);

QK.addActionListener(this);

show.add(Message);

Message.setForeground(Color.blue);

f.addKeyListener(this);

// show.addKeyListener(this);

play.addKeyListener(this);

sheChuShi();

}

public void sheChuShi(){//蛇初始化

sheTou = new JLabel(you);//用向右的图来初始蛇头

f.add(sheTou);

sheTou.setBounds(JianJu*0,JianJu*0,JianJu,JianJu);

// System.out.println("ishere");

shiWu = new JLabel("■");

f.add(shiWu);

shiWu.setBounds(10*JianJu,10*JianJu,JianJu,JianJu);

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

sheWei[i] = new JLabel("■");

f.add(sheWei[i]);

sheWei[i].setBounds(-1*JianJu,0*JianJu,JianJu,JianJu);

}

while(true){

if(out == true){

yunXing();

break;

}

try{

Thread.sleep(200);

}catch(Exception ex){

ex.printStackTrace();

}

}

}

public void sheJiaChang(){//蛇的长度增加

if(diJi max){

sheWei[++diJi] = new JLabel(new ImageIcon("tuPian\\isSheWei.jpg"));

f.add(sheWei[diJi]);

sheWei[diJi].setBounds(sheWei[diJi-1].getX(),sheWei[diJi-1].getY(),JianJu,JianJu);

// System.out.println("diJi "+diJi);

}

}

public void pengZhuanJianCe(){//检测蛇的碰撞情况

if(sheTou.getX()0 || sheTou.getY()0 ||

sheTou.getX()f.getWidth()-15 || sheTou.getY()f.getHeight()-105 ){

gameOver();

// System.out.println("GameOVER");

}

if(sheTou.getX() == shiWu.getX() sheTou.getY() == shiWu.getY()){

out: while(true){

shiWu.setLocation((int)(Math.random()*32)*JianJu,(int)(Math.random()*28)*JianJu);

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

if(shiWu.getX()!= sheWei[i].getX() shiWu.getY()!=sheWei[i].getY()

sheTou.getX()!=shiWu.getX() sheTou.getY()!= shiWu.getY()){//如果食物不在蛇身上则退出循环，产生食物成功

break out;

}

}

}

sheJiaChang();

// System.out.println("吃了一个");

if(time100 ){

time -= jianTime;

}

else{}

Message.setText("级别:"+JiBie+" 蛇长:"+(diJi+2)+" 时间:"+time+"ms 分数:"+(jiFenQi+=10)+"");

}

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

if(sheTou.getX() == sheWei[i].getX() sheTou.getY() == sheWei[i].getY()){

gameOver();

// System.out.println("吃到尾巴了");

}

}

}

public void yunXing(){

while(true){

while(run){

if(fangXiang == 1){//上

y-=1;

}

if(fangXiang == 2){//下

y+=1;

}

if(fangXiang == 3){//左

x-=1;

}

if(fangXiang == 4){//右

x+=1;

}

x2 = sheTou.getX();

y2 = sheTou.getY();

sheTou.setLocation(x*JianJu,y*JianJu); //设置蛇头的坐标 网格数*间隔

for(int i=diJi;i=0;i--){

if(i==0){

sheWei[i].setLocation(x2,y2);

// System.out.println(i+" "+sheTou.getX()+" "+sheTou.getY());

}

else{

sheWei[i].setLocation(sheWei[i-1].getX(),sheWei[i-1].getY());

// System.out.println(i+" "+sheWei[i].getX()+" "+sheWei[i].getY());

}

}

pengZhuanJianCe();

try{

Thread.sleep(time);

}catch(Exception e){

e.printStackTrace();

}

}

Message.setText("级别:"+JiBie+" 蛇长:"+(diJi+2)+" 时间:"+time+"ms 分数:"+(jiFenQi+=10)+"");

try{

Thread.sleep(200);

}catch(Exception e){

e.printStackTrace();

}

}

}

public void gameOver(){//游戏结束时处理

int in = JOptionPane.showConfirmDialog(f,"游戏已经结束!\n是否要保存分数","提示",JOptionPane.YES_NO_OPTION);

if(in == JOptionPane.YES_OPTION){

// System.out.println("YES");

String s = JOptionPane.showInputDialog(f,"输入你的名字：");

try{

FileInputStream fis = new FileInputStream("GaoFen.ini");//先把以前的数据读出来加到写的数据前

InputStreamReader isr = new InputStreamReader(fis);

BufferedReader br = new BufferedReader(isr);

String s2,setOut = "";

while((s2=br.readLine())!= null){

setOut =setOut+s2+"\n";

}

FileOutputStream fos = new FileOutputStream("GaoFen.ini");//输出到文件流

s = setOut+s+":"+jiFenQi+"\n";

fos.write(s.getBytes());

}catch(Exception e){}

}

System.exit(0);

}

public void keyTyped(KeyEvent arg0) {

// TODO 自动生成方法存根

}

public void keyPressed(KeyEvent arg0) {

// System.out.println(arg0.getSource());

if(arg0.getKeyCode() == KeyEvent.VK_UP){//按上下时方向的值相应改变

if(fangXiang != 2){

fangXiang = 1;

// sheTou.setIcon(shang);//设置蛇的方向

}

// System.out.println("UP");

}

if(arg0.getKeyCode() == KeyEvent.VK_DOWN){

if(fangXiang != 1){

fangXiang = 2;

// sheTou.setIcon(xia);

}

// System.out.println("DOWN");

}

if(arg0.getKeyCode() == KeyEvent.VK_LEFT){//按左右时方向的值相应改变

if(fangXiang != 4){

fangXiang = 3;

// sheTou.setIcon(zhuo);

}

// System.out.println("LEFT");

}

if(arg0.getKeyCode() == KeyEvent.VK_RIGHT){

if(fangXiang != 3){

fangXiang = 4;

// sheTou.setIcon(you);

}

// System.out.println("RIGHT");

}

}

public void keyReleased(KeyEvent arg0) {

// TODO 自动生成方法存根

}

public void actionPerformed(ActionEvent arg0) {

// TODO 自动生成方法存根

JMenuItem JI = (JMenuItem)arg0.getSource();

if(JI == play){

out = true;

run = true;

isRuned = true;

gao.setEnabled(false);

zhong.setEnabled(false);

di.setEnabled(false);

}

if(JI == pause){

run = false;

}

if(isRuned == false){//如果游戏还没运行，才可以设置级别

if(JI == gao){

time = 200;

jianTime = 1;

JiBie = "高级";

Message.setText("级别："+JiBie+" 蛇长:"+(diJi+2)+" 时间:"+time+"ms 分数:"+jiFenQi);

}

if(JI == zhong){

time = 400;

jianTime = 2;

JiBie = "中级";

Message.setText("级别："+JiBie+" 蛇长:"+(diJi+2)+" 时间:"+time+"ms 分数:"+jiFenQi);

}

if(JI == di){

time = 500;

jianTime = 3;

JiBie = "低级";

Message.setText("级别："+JiBie+" 蛇长:"+(diJi+2)+" 时间:"+time+"ms 分数:"+jiFenQi);

}

}

if(JI == GF){

try{

FileInputStream fis = new FileInputStream("GaoFen.ini");

InputStreamReader isr = new InputStreamReader(fis);

BufferedReader br = new BufferedReader(isr);

String s,setOut = "";

while((s=br.readLine())!= null){

setOut =setOut+s+"\n";

}

if(setOut.equals("")){

JOptionPane.showMessageDialog(f,"暂无保存记录!","高分榜",JOptionPane.INFORMATION_MESSAGE);

}

else{

JOptionPane.showMessageDialog(f,setOut);

}

}catch(Exception e){

e.printStackTrace();

}

}

if(JI == ZZ){//关于作者

JOptionPane.showMessageDialog(f,"软件作者：申志飞\n地址：四川省绵阳市\nQQ：898513806\nE-mail:shenzhifeiok@126.com","关于作者",JOptionPane.INFORMATION_MESSAGE);

}

if(JI == YX){//关于游戏

JOptionPane.showMessageDialog(f,"贪吃蛇游戏\n游戏版本 V1.0","关于游戏",JOptionPane.INFORMATION_MESSAGE);

}

if(JI == QK){

try{

int select = JOptionPane.showConfirmDialog(f,"确实要清空记录吗？","清空记录",JOptionPane.YES_OPTION);

if(select == JOptionPane.YES_OPTION){

String setOut = "";

FileOutputStream fos = new FileOutputStream("GaoFen.ini");//输出到文件流

fos.write(setOut.getBytes());

}

}catch(Exception ex){}

}

}

}

//是我自己写的，本来里面有图片的，但无法上传，所以把图片去掉了，里面的ImageIcon等语句可以去掉。能正常运行。

java贪吃蛇代码注释求解

import java.awt.Color;

import java.awt.Graphics;

import java.awt.Graphics2D;

import java.awt.Rectangle;

import java.awt.event.KeyAdapter;

import java.awt.event.KeyEvent;

import java.awt.image.BufferedImage;

import java.util.ArrayList;

import java.util.List;

import javax.swing.JFrame;

public class InterFace extends JFrame {

/**

* WIDTH:宽

* HEIGHT:高

* SLEEPTIME:可以看作蛇运动的速度

* L = 1,R = 2, U = 3, D = 4 左右上下代码

*/

public static final int WIDTH = 800, HEIGHT = 600, SLEEPTIME = 200, L = 1,R = 2, U = 3, D = 4;

BufferedImage offersetImage= new BufferedImage(WIDTH, HEIGHT,BufferedImage.TYPE_3BYTE_BGR);;

Rectangle rect = new Rectangle(20, 40, 15 * 50, 15 * 35);

Snake snake;

Node node;

public InterFace() {

//创建"蛇"对象

snake = new Snake(this);

//创建"食物"对象

createNode();

this.setBounds(100, 100, WIDTH, HEIGHT);

//添加键盘监听器

this.addKeyListener(new KeyAdapter() {

public void keyPressed(KeyEvent arg0) {

System.out.println(arg0.getKeyCode());

switch (arg0.getKeyCode()) {

//映射上下左右4个键位

case KeyEvent.VK_LEFT:

snake.dir = L;

break;

case KeyEvent.VK_RIGHT:

snake.dir = R;

break;

case KeyEvent.VK_UP:

snake.dir = U;

break;

case KeyEvent.VK_DOWN:

snake.dir = D;

}

}

});

this.setTitle("贪吃蛇 0.1 By ： Easy");

this.setDefaultCloseOperation(EXIT_ON_CLOSE);

this.setVisible(true);

//启动线程,开始执行

new Thread(new ThreadUpadte()).start();

}

public void paint(Graphics g) {

Graphics2D g2d = (Graphics2D) offersetImage.getGraphics();

g2d.setColor(Color.white);

g2d.fillRect(0, 0, WIDTH, HEIGHT);

g2d.setColor(Color.black);

g2d.drawRect(rect.x, rect.y, rect.width, rect.height);

//如果蛇碰撞(吃)到食物，则创建新食物

if (snake.hit(node)) {

createNode();

}

snake.draw(g2d);

node.draw(g2d);

g.drawImage(offersetImage, 0, 0, null);

}

class ThreadUpadte implements Runnable {

public void run() {

//无限重绘画面

while (true) {

try {

Thread.sleep(SLEEPTIME);

repaint(); //

} catch (InterruptedException e) {

e.printStackTrace();

}

}

}

}

/**

* 创建食物

*/

public void createNode() {

//随机食物的出现位置

int x = (int) (Math.random() * 650) + 50,y = (int) (Math.random() * 500) + 50;

Color color = Color.blue;

node = new Node(x, y, color);

}

public static void main(String args[]) {

new InterFace();

}

}

/**

* 节点类(包括食物和蛇的身躯组成节点)

*/

class Node {

int x, y, width = 15, height = 15;

Color color;

public Node(int x, int y, Color color) {

this(x, y);

this.color = color;

}

public Node(int x, int y) {

this.x = x;

this.y = y;

this.color = color.black;

}

public void draw(Graphics2D g2d) {

g2d.setColor(color);

g2d.drawRect(x, y, width, height);

}

public Rectangle getRect() {

return new Rectangle(x, y, width, height);

}

}

/**

* 蛇

*/

class Snake {

public ListNode nodes = new ArrayListNode();

InterFace interFace;

int dir=InterFace.R;

public Snake(InterFace interFace) {

this.interFace = interFace;

nodes.add(new Node(20 + 150, 40 + 150));

addNode();

}

/**

* 是否碰撞到食物

* @return true 是 false 否

*/

public boolean hit(Node node) {

//遍历整个蛇体是否与食物碰撞

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

if (nodes.get(i).getRect().intersects(node.getRect())) {

addNode();

return true;

}

}

return false;

}

public void draw(Graphics2D g2d) {

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

nodes.get(i).draw(g2d);

}

move();

}

public void move() {

nodes.remove((nodes.size() - 1));

addNode();

}

public synchronized void addNode() {

Node nodeTempNode = nodes.get(0);

//如果方向

switch (dir) {

case InterFace.L:

//判断是否会撞墙

if (nodeTempNode.x = 20) {

nodeTempNode = new Node(20 + 15 * 50, nodeTempNode.y);

}

nodes.add(0, new Node(nodeTempNode.x - nodeTempNode.width,

nodeTempNode.y));

break;

case InterFace.R:

//判断是否会撞墙

if (nodeTempNode.x = 20 + 15 * 50 - nodeTempNode.width) {

nodeTempNode = new Node(20 - nodeTempNode.width, nodeTempNode.y);

}

nodes.add(0, new Node(nodeTempNode.x + nodeTempNode.width,

nodeTempNode.y));

break;

case InterFace.U:

//判断是否会撞墙

if (nodeTempNode.y = 40) {

nodeTempNode = new Node(nodeTempNode.x, 40 + 15 * 35);

}

nodes.add(0, new Node(nodeTempNode.x, nodeTempNode.y - nodeTempNode.height));

break;

case InterFace.D:

//判断是否会撞墙

if (nodeTempNode.y = 40 + 15 * 35 - nodeTempNode.height) {

nodeTempNode = new Node(nodeTempNode.x,40 - nodeTempNode.height);

}

nodes.add(0, new Node(nodeTempNode.x, nodeTempNode.y + nodeTempNode.height));

break;

}

}

}

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