前不久，跟着博主学习，做了一个小游戏——贪吃蛇，尽管是用java的gui做的，然而我集体感觉趣味是最好的老师，只管当初社会上曾经淘汰了gui，然而我心愿咱们学习可能将趣味投入到学习当中，趣味是最好的老师。
StartGame.java
package com.xiaoyu.snake;import javax.swing.*;//游戏的主启动类public class StartGame { public static void main(String[] args) { JFrame frame = new JFrame(); frame.setBounds(10,10,900,720); frame.setResizable(false);//窗口大小不可变 frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); //失常的游戏面板都应该在面板上 frame.add(new GamePanel()); frame.setVisible(true); }}GamePanel.java
package com.xiaoyu.snake;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.util.Random;public class GamePanel extends JPanel implements KeyListener, ActionListener { //定义蛇的数据结构 int lenght;//蛇的长度 int[] snakeX=new int[600];//蛇的x坐标 int[] snakeY=new int[500];//蛇的y坐标 String fx="R"; //食物的坐标 int foodx; int foody; Random random=new Random(); int score;//问题 //游戏以后的状态 开始 进行 boolean isStart = false;//默认进行 boolean isFail=false; //定时器 Timer timer=new Timer(100,this);//100毫秒执行一次！ //结构器 public GamePanel(){ init(); this.setFocusable(true);//取得焦点事件 this.addKeyListener(this);//取得键盘监听事件 timer.start();//游戏一开始定时器就启动 } //初始化办法 public void init(){ lenght = 3; snakeX[0] = 100;snakeY[0] = 100;//脑袋的坐标 snakeX[1] = 75;snakeY[1] = 100;//第一个身材的坐标 snakeX[2] = 50;snakeY[2] = 100;//第二个身材的坐标 fx="R"; //将食物随机散布在界面上 foodx=25+25*random.nextInt(34); foody=75+25*random.nextInt(24); score=0; } //绘制面板,咱们游戏中的所有大小都由这只画笔来画 @Override protected void paintComponent(Graphics g) { super.paintComponent(g);//清屏 //绘制动态的面板 this.setBackground(Color.BLACK); Data.header.paintIcon(this,g,25,11);//头部广告栏画下来 g.fillRect(20,75,850,600); //画积分 g.setColor(Color.WHITE); g.setFont(new Font("微软雅黑",Font.BOLD,18)); g.drawString("长度："+lenght,750,35); g.drawString("分数："+score,750,50); //画食物 Data.food.paintIcon(this,g,foodx,foody); //把小蛇画下来 if (fx.equals("R")){ Data.right.paintIcon(this,g,snakeX[0],snakeY[0]);//蛇头初始化向右 }else if (fx.equals("L")){ Data.left.paintIcon(this,g,snakeX[0],snakeY[0]);//蛇头初始化向左 }else if (fx.equals("U")){ Data.up.paintIcon(this,g,snakeX[0],snakeY[0]);//蛇头初始化向上 }else if (fx.equals("D")){ Data.down.paintIcon(this,g,snakeX[0],snakeY[0]);//蛇头初始化向下 } for (int i = 1; i < lenght ; i++) { Data.body.paintIcon(this,g,snakeX[i],snakeY[i]); } //游戏状态 if (isStart==false){ g.setColor(Color.WHITE); g.setFont(new Font("微软雅黑",Font.BOLD,40)); g.drawString("按下空格开始游戏",300,300); } //游戏失败 if (isFail){ g.setColor(Color.RED); g.setFont(new Font("微软雅黑",Font.BOLD,40)); g.drawString("失败，按下空格从新开始",300,300); } } //键盘监听事件 @Override public void keyPressed(KeyEvent e) { int keyCode=e.getKeyCode(); if (keyCode==KeyEvent.VK_SPACE){ if (isFail){ isFail = false; init(); }else { isStart=!isStart; } repaint(); } //小蛇挪动 if (keyCode==KeyEvent.VK_UP){ fx="U"; }else if(keyCode==KeyEvent.VK_DOWN){ fx="D"; }else if(keyCode==KeyEvent.VK_LEFT){ fx="L"; }else if(keyCode==KeyEvent.VK_RIGHT){ fx="R"; } } //事件监听 @Override public void actionPerformed(ActionEvent e) { if (isStart && isFail==false){//如果游戏是开始状态 //吃食物 if (snakeX[0] == foodx && snakeY[0]==foody){ lenght++;//长度加一 score+=10;//分数加十 //再次随机生成食物 foodx=25+25*random.nextInt(34); foody=75+25*random.nextInt(24); } //挪动 for (int i = lenght-1; i > 0 ; i--) { snakeX[i]= snakeX[i-1]; snakeY[i]= snakeY[i-1]; } //走向 if (fx.equals("R")){ snakeX[0] = snakeX[0]+25; //边界判断 if (snakeX[0]>850){snakeX[0] = 25;} }else if (fx.equals("L")){ snakeX[0] = snakeX[0]-25; if (snakeX[0]<25){snakeX[0] = 850;} }else if (fx.equals("U")){ snakeY[0] = snakeY[0]-25; if (snakeY[0]<75){snakeY[0] = 650;} }else if (fx.equals("D")){ snakeY[0] = snakeY[0]+25; if (snakeY[0]>650){snakeY[0] = 75;} } //失败的断定，撞到本人 for (int i = 1; i < lenght ; i++) { if (snakeX[0]==snakeX[i]&&snakeY[0]==snakeY[i]){ isFail= true; } } repaint();//重画页面 } timer.start();//定时器开始 } @Override public void keyTyped(KeyEvent e) { } @Override public void keyReleased(KeyEvent e) { }}Data.java
package com.xiaoyu.snake;import javax.swing.*;import java.net.URL;//数据中心public class Data { public static URL headerURL = Data.class.getResource("static/header.png"); public static ImageIcon header=new ImageIcon(headerURL); public static URL upURL = Data.class.getResource("static/up.png"); public static ImageIcon up=new ImageIcon(upURL); public static URL downURL = Data.class.getResource("static/down.png"); public static ImageIcon down=new ImageIcon(downURL); public static URL leftURL = Data.class.getResource("static/left.png"); public static ImageIcon left=new ImageIcon(leftURL); public static URL rightURL = Data.class.getResource("static/right.png"); public static ImageIcon right=new ImageIcon(rightURL); public static URL bodyURL = Data.class.getResource("static/body.png"); public static ImageIcon body=new ImageIcon(bodyURL); public static URL foodURL = Data.class.getResource("static/food.png"); public static ImageIcon food=new ImageIcon(foodURL);}