• GUI：贪吃蛇

    以上是准备工作

    Data

    1.  
    2. import javax.swing.*;
    3. import java.net.URL;
    4.  
    5. public class Data {
    6.     public static URL headerURL=Data.class.getResource("static/header.png");
    7.     public static ImageIcon header =new ImageIcon(headerURL);
    8.  
    9.     public static URL upURL=Data.class.getResource("static/up.png");
    10.     public static URL downURL=Data.class.getResource("static/down.png");
    11.     public static URL leftURL=Data.class.getResource("static/left.png");
    12.     public static URL rightURL=Data.class.getResource("static/right.png");
    13.  
    14.     public static ImageIcon up =new ImageIcon(upURL);
    15.     public static ImageIcon down =new ImageIcon(downURL);
    16.     public static ImageIcon left =new ImageIcon(leftURL);
    17.     public static ImageIcon right =new ImageIcon(rightURL);
    18.  
    19.     public static URL bodyURL=Data.class.getResource("static/body.png");
    20.     public static ImageIcon body =new ImageIcon(bodyURL);
    21.     public static URL foodURL=Data.class.getResource("static/food.png");
    22.     public static ImageIcon food =new ImageIcon(foodURL);
    23. }

    GamePanel

    1.  
    2. import javax.swing.*;
    3. import java.awt.*;
    4. import java.awt.event.ActionEvent;
    5. import java.awt.event.ActionListener;
    6. import java.awt.event.KeyEvent;
    7. import java.awt.event.KeyListener;
    8. import java.util.Random;
    9.  
    10. public class GamePanel extends JPanel implements KeyListener , ActionListener {
    11.  
    12.         //定义蛇的数据结构
    13.         int length;//蛇的长度
    14.         // 蛇的x，y坐标
    15.         int[]snakeX=new int[600];
    16.         int[]snakeY=new int[500];
    17.         String fx;
    18.         //游戏当前的状态：开始，停止
    19.         boolean isStart=false;//默认是不开始
    20.         boolean isFail=false;//游戏结果的状态
    21.     int score;
    22.     int foody,foodx;
    23.     Random  random=new Random();
    24.     //定时器 ms为单位 1000ms=1s
    25.     Timer timer=new Timer(100,this);
    26.  
    27.     //构造器
    28.  
    29.     public GamePanel(){
    30.         init();
    31.         //获得焦点和键盘事件
    32.         this.setFocusable(true);
    33.         this.addKeyListener(this);
    34.         timer.start();//游戏qidong
    35.     }
    36.     public void init(){
    37.         length=3;
    38.         snakeX[0]=100;snakeY[0]=100;//脑袋坐标
    39.         snakeX[1]=75;snakeY[1]=100;//第一个身体的坐标
    40.         snakeX[2]=50;snakeY[2]=100;//第二个身体的坐标
    41.         fx="R";//inti向右
    42.  
    43.         //随机分布food
    44.         foodx=25+25*random.nextInt(34);
    45.         foody=75+25*random.nextInt(24);
    46.         score=0;
    47.     }
    48.  
    49.     @Override
    50.     protected void paintComponent(Graphics g) {
    51.         super.paintComponent(g);//清屏
    52.         //绘制静态的面板
    53.         this.setBackground(Color.WHITE);
    54.         Data.header.paintIcon(this,g,25,11);//画头部广告
    55.         g.fillRect(25,75,850,600);//默认的游戏界面
    56.  
    57.         //画积分
    58.         g.setColor(Color.WHITE);
    59.         g.setFont(new Font("微软雅黑",Font.BOLD,18));
    60.         g.drawString("长度 "+length,750,30);
    61.         g.drawString("积分 "+score,750,55);
    62.  
    63.         //画食物
    64.         Data.food.paintIcon(this,g,foodx,foody);
    65.  
    66.  
    67.         //把小蛇画上去
    68.         if(fx.equals("R")){
    69.             Data.right.paintIcon(this,g,snakeX[0],snakeY[0]);//蛇头初始化向右
    70.         }
    71.         else if(fx.equals("L")){
    72.             Data.left.paintIcon(this,g,snakeX[0],snakeY[0]);//蛇头初始化向L
    73.         }
    74.         else if(fx.equals("U")){
    75.             Data.up.paintIcon(this,g,snakeX[0],snakeY[0]);//蛇头初始化向UP
    76.         }
    77.         else if(fx.equals("D")){
    78.             Data.down.paintIcon(this,g,snakeX[0],snakeY[0]);//蛇头初始化向down
    79.         }
    80.  
    81.         for(int i=1;i<length;i++){
    82.             Data.body.paintIcon(this,g,snakeX[i],snakeY[i] );
    83.         }
    84.  
    85. //游戏状态
    86.         if(isStart==false){
    87.             g.setColor(Color.white);
    88.             g.setFont(new Font("微软雅黑",Font.BOLD,30));
    89.             g.drawString("Pressed the Blank Key Begin Game",300,300);
    90.         }
    91.  
    92.  
    93. //游戏结束
    94.         if(isFail){
    95.             g.setColor(Color.RED);
    96.             g.setFont(new Font("微软雅黑",Font.BOLD,30));
    97.             g.drawString("The Game Is Failed",250,300);
    98.         }
    99.     }
    100.  
    101.  
    102.  
    103.     @Override
    104.     public void keyPressed(KeyEvent e) {
    105.         int keyCode=e.getKeyCode();//获得键盘参数
    106.         //空格开始
    107.         if(keyCode==KeyEvent.VK_SPACE){
    108.             if(isFail){
    109.                 isFail=false;
    110.             }else{
    111.             isStart=!isStart;}
    112.             repaint();
    113.         }
    114.         //小蛇移动
    115.         if(keyCode==KeyEvent.VK_UP){
    116.             fx="U";
    117.         } else if (keyCode==KeyEvent.VK_DOWN) {
    118.             fx="D";
    119.         }else if (keyCode==KeyEvent.VK_LEFT) {
    120.             fx="L";
    121.         }else if (keyCode==KeyEvent.VK_RIGHT) {
    122.             fx="R";
    123.         }
    124.         //走向
    125.         if(fx.equals("R")){
    126.             snakeX[0]=snakeX[0]+25;
    127.             if(snakeX[0]>850){snakeX[0]=25;}//边界判断
    128.         }else if(fx.equals("L")){
    129.             snakeX[0]=snakeX[0]-25;
    130.             if(snakeX[0]<25){snakeX[0]=850;}//边界判断
    131.         }else if(fx.equals("U")){
    132.             snakeY[0]=snakeY[0]-25;
    133.             if(snakeY[0]<75){snakeY[0]=650;}//边界判断
    134.         }else if(fx.equals("D")){
    135.             snakeY[0]=snakeY[0]+25;
    136.             if(snakeY[0]>650){snakeY[0]=75;}//边界判断
    137.         }
    138.     }
    139.     @Override
    140.     public void actionPerformed(ActionEvent e) {
    141.  
    142.         if(isStart&&isFail==false){
    143.             for (int i = length-1; i >0 ; i--) {
    144.                 snakeX[i]=snakeX[i-1];
    145.                 snakeY[i]=snakeY[i-1];
    146.             }
    147.             if(snakeX[0]==foodx&&snakeY[0]==foody){
    148.                 length++;
    149.                 score+=10;
    150. //重置食物
    151.                 foodx=25+25*random.nextInt(34);
    152.                 foody=75+25*random.nextInt(24);
    153.  
    154.             }
    155.             //头部走向
    156.             if(fx.equals("R")){
    157.                 snakeX[0] = snakeX[0]+25;   //头部右移25个单位（即一格）
    158.                 if(snakeX[0]>850){  //边界判断：如果蛇右移到了边界，则回到左边
    159.                     snakeX[0] = 25;
    160.                 }
    161.             }else if(fx.equals("L")){
    162.                 snakeX[0] = snakeX[0]-25;           //头部左移25个单位（即一格）
    163.                 if(snakeX[0]<25){snakeX[0] = 850;}  //边界判断
    164.             }else if(fx.equals("U")){
    165.                 snakeY[0] = snakeY[0]-25;           //向上移动应该是-25
    166.                 if(snakeY[0]<75){snakeY[0] = 650;}  //边界判断
    167.             }else if(fx.equals("D")){
    168.                 snakeY[0] = snakeY[0]+25;           //向下移动
    169.                 if(snakeY[0]>650){snakeY[0] = 75;}  //边界判断
    170.             }
    171.             for (int i = 1; i < length; i++) {  //头部与身体的某一节坐标重合，即撞到自己
    172.                 if(snakeX[0] == snakeX[i] && snakeY[0]==snakeY[i]){
    173.                     isFail=true;
    174.                     init();
    175.                 }
    176.             }
    177.             repaint();
    178.         }
    179.         timer.start();
    180.     }
    181.     @Override
    182.     public void keyReleased(KeyEvent e) {
    183.  
    184.     }
    185.  
    186.     @Override
    187.     public void keyTyped(KeyEvent e) {
    188.  
    189.     }
    190. }

    StartGame

    1.  
    2. import javax.swing.*;
    3.  
    4. public class StartGame {
    5.     public static void main(String[] args) {
    6.         JFrame frame=new JFrame();
    7.         frame.setBounds(10,10,900,720);
    8.         //窗口设置大小固定
    9.         frame.setResizable(false);
    10.         frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    11.  
    12.         //正常游戏界面都应该在面上
    13.         frame.add(new GamePanel());
    14.         frame.setVisible(true);
    15.     }
    16. }

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  • 原文地址：https://blog.csdn.net/2201_75903640/article/details/134220987