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<>一.工程文件
<>二.Main.java
package com.company; import javax.swing.*; public class Main { public static
void main(String[] args) { //创建窗体对象 JFrame frame = new JFrame(); //创建窗体参数（）
frame.setBounds(10,10,900,720); //设置不允许更改大小 //frame.setResizable(false);
//设置关闭方式 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //添加主题逻辑框架 frame.
add(new Mpanel()); //设置窗体可见 frame.setVisible(true); } }
<>三.Mpanel.java
package com.company; import javax.imageio.ImageIO; import javax.sound.sampled.*
; import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent;
import java.awt.event.ActionListener; import java.awt.event.KeyEvent; import
java.awt.event.KeyListener; import java.io.BufferedInputStream; import java.io.
IOException; import java.io.InputStream; import java.util.Random;
//基本套路，继承JPanel，实现KeyListener, ActionListener接口 public class Mpanel extends
JPanel implements KeyListener, ActionListener { //定义所需要的图片元素 //标题 ImageIcon
title; //蛇的身体部位 ImageIcon body; //蛇向上方向的头 ImageIcon up; //蛇向下方向的头 ImageIcon down
; //蛇向左方向的头 ImageIcon left; //蛇向右方向的头 ImageIcon right; //食物元素 ImageIcon food;
//定义初始长度 int len = 3; //定义初始分数 int score = 0; //存放蛇位置坐标的数组 int[] snakex = new
int[750]; int[] snakey = new int[750]; //定义方向 String fx = "R"; //定义游戏是否开始
Boolean isStart= false; //定义游戏是否失败 Boolean isFailed = false;
//定义游戏时钟，在此可以设置蛇移动速度，默认100ms Timer timer = new Timer(100,this); //定义食物的坐标 int
foodx; int foody; //引入随机数，用于生成食物的随机位置 Random random = new Random(); //定义背景音乐
Clip bgm; //构造方法 public Mpanel(){ //加载图片元素 loadImages(); //初始化数据 initSnake();
//设置聚焦 this.setFocusable(true); //设置键盘监听 this.addKeyListener(this); //开始计时 timer
.start(); //加载背景音乐 loadBGM(); } //设置绘图元素 public void paintComponent(Graphics g){
//调用父类方法 super.paintComponent(g); //设置背景颜色为白色 this.setBackground(Color.white);
//设置标题元素位置 title.paintIcon(this,g,25,11); //设置白色背景填充位置 g.fillRect(25,75,850,600)
; //设置画笔颜色为白色 g.setColor(Color.white); //设置长度显示 g.drawString("Len: " + len,750,
35); //设置分数显示 g.drawString("Score: " + score,750,50); //根据方向调用相应的蛇头元素 if(fx ==
"R"){ right.paintIcon(this,g,snakex[0],snakey[0]); } else if(fx == "L"){ left.
paintIcon(this,g,snakex[0],snakey[0]); } else if(fx == "U"){ up.paintIcon(this,g
,snakex[0],snakey[0]); } else if(fx == "D"){ down.paintIcon(this,g,snakex[0],
snakey[0]); } for(int i=1;i<len;i++){ body.paintIcon(this,g,snakex[i],snakey[i])
; } //调用食物元素 food.paintIcon(this,g,foodx,foody); //游戏开始的处理 if(isStart == false){
//设置画笔颜色 g.setColor(Color.white); //设置字体 g.setFont(new Font("arial",Font.BOLD,40
)); //设置具体文字 g.drawString("Press Space To Start",250,300); } //游戏失败的处理 if(
isFailed){ //设置画笔颜色 g.setColor(Color.red); //设置字体 g.setFont(new Font("arial",
Font.BOLD,40)); //设置具体文字 g.drawString("Failed: Press Space To Start",250,300); }
} //初始化数据 public void initSnake(){ len = 3; snakex[0] = 100; snakey[0] = 100;
snakex[1] = 75; snakey[1] = 100; snakex[2] = 50; snakey[2] = 100;
//设置食物的初始随机生成位置 foodx = 25 + 25 * random.nextInt(34); foody = 75 + 25 * random.
nextInt(24); //设置初始值 fx = "R"; score = 0; } //接口要求的实现方法 @Override public void
keyTyped(KeyEvent e) { } @Override public void keyPressed(KeyEvent e) { //获取键盘监听
int keyCode = e.getKeyCode(); //空格 if(keyCode == KeyEvent.VK_SPACE){ //如果失败则重置信息
if(isFailed){ isFailed = !isFailed; //重新开始 initSnake(); } //设置开始 else { isStart
= !isStart; } //判断开始后循环播放背景音乐 if(isStart){ bgm.loop(Clip.LOOP_CONTINUOUSLY); }
//未开始和暂停则不播放背景音乐 else { bgm.stop(); } //重新绘图 repaint(); } //右键处理并设置不能回头 else if(
keyCode== KeyEvent.VK_LEFT && fx != "R"){ fx = "L"; } //左键 else if(keyCode ==
KeyEvent.VK_RIGHT && fx != "L"){ fx = "R"; } //上键 else if(keyCode == KeyEvent.
VK_UP&& fx != "D"){ fx = "U"; } //下键 else if(keyCode == KeyEvent.VK_DOWN && fx
!= "U"){ fx = "D"; } } //接口要求的实现方法 @Override public void keyReleased(KeyEvent e)
{ } //事件监听 @Override public void actionPerformed(ActionEvent e) { //开始且没有失败的情况
if(isStart && !isFailed){ //循环移动蛇身 for(int i=len-1;i>0;i--){ snakex[i]=snakex[i-
1]; snakey[i]=snakey[i-1]; } //向右移动并判断是否撞墙，撞墙则失败 if(fx == "R"){ snakex[0]=snakex
[0]+25; if(snakex[0]>825)isFailed=true; } //向左移动并判断是否撞墙，撞墙则失败 else if(fx == "L")
{ snakex[0]=snakex[0]-25; if(snakex[0]<50)isFailed=true; } //向上移动并判断是否撞墙，撞墙则失败
else if(fx == "U"){ snakey[0]=snakey[0]-25; if(snakey[0]<100)isFailed=true; }
//向下移动并判断是否撞墙，撞墙则失败 else if(fx == "D"){ snakey[0]=snakey[0]+25; if(snakey[0]>625
)isFailed=true; } //吃到食物的判断 if(snakex[0]==foodx&&snakey[0]==foody){
//身体加长，分加多，并且随机生成新食物 len++; score += 10; foodx = 25 + 25 * random.nextInt(34);
foody= 75 + 25 * random.nextInt(24); } //撞到自身的处理 for(int i=1;i<len;i++){ if(
snakex[i]==snakex[0] && snakey[i]==snakey[0]){ isFailed = true; } } //重新绘图
repaint(); } //事件刷新 timer.start(); } //加载背景音乐 public void loadBGM(){ try {
//从类所在文件引入 bgm = AudioSystem.getClip(); InputStream is = this.getClass().
getClassLoader().getResourceAsStream("com/company/sound/bgm.wav");
AudioInputStream ais= AudioSystem.getAudioInputStream(new BufferedInputStream(is
)); bgm.open(ais); //bgm.loop(Clip.LOOP_CONTINUOUSLY); } //相应的异常处理 catch (
LineUnavailableException e) { e.printStackTrace(); } catch (
UnsupportedAudioFileException e) { e.printStackTrace(); } catch (IOException e)
{ e.printStackTrace(); } } //加载图片 public void loadImages(){ InputStream is; try
{ //依次添加响应元素 is = getClass().getClassLoader().getResourceAsStream(
"com/company/img/title.jpg"); title = new ImageIcon(ImageIO.read(is)); is =
getClass().getClassLoader().getResourceAsStream("com/company/img/body.png");
body= new ImageIcon(ImageIO.read(is)); is = getClass().getClassLoader().
getResourceAsStream("com/company/img/up.png"); up = new ImageIcon(ImageIO.read(
is)); is = getClass().getClassLoader().getResourceAsStream(
"com/company/img/down.png"); down = new ImageIcon(ImageIO.read(is)); is =
getClass().getClassLoader().getResourceAsStream("com/company/img/left.png");
left= new ImageIcon(ImageIO.read(is)); is = getClass().getClassLoader().
getResourceAsStream("com/company/img/right.png"); right = new ImageIcon(ImageIO.
read(is)); is = getClass().getClassLoader().getResourceAsStream(
"com/company/img/food.png"); food = new ImageIcon(ImageIO.read(is)); } catch (
IOException e) { e.printStackTrace(); } } }
<>四.效果