GUI编程实现贪吃蛇小游戏
（推荐教程：java课程）
1、编写主方法实现启动类
2、准备好素材图片，编写数据类
3、代码主体部分：在panel面板上实现游戏初始化，键盘和事件的监听等功能
4、代码运行效果图
5、GitHub源码链接
1、编写主方法实现启动类
import javax.swing.*; //主启动类 public class StartGame { public static void main(String[] args) { JFrame jFrame = new JFrame("贪吃蛇小游戏"); jFrame.setBounds(10,10,900,720); jFrame.setResizable(false); //设置窗口大小不可变 jFrame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); //面板 jFrame.add(new GamePanel()); jFrame.setVisible(true); }}2、准备好素材图片，编写数据类
import javax.swing.*;import java.net.URL;public class Data { //头部图片 public static URL headerURL = Data.class.getResource("statics/header.png"); public static ImageIcon header = new ImageIcon(headerURL); //头部上下左右 public static URL upURL = Data.class.getResource("statics/up.png"); public static URL downURL = Data.class.getResource("statics/down.png"); public static URL leftURL = Data.class.getResource("statics/left.png"); public static URL rightURL = Data.class.getResource("statics/right.png"); public static ImageIcon up = new ImageIcon(upURL); public static ImageIcon down = new ImageIcon(downURL); public static ImageIcon left = new ImageIcon(leftURL); public static ImageIcon right = new ImageIcon(rightURL); //身体 public static URL bodyURL = Data.class.getResource("statics/body.png"); public static ImageIcon body = new ImageIcon(bodyURL); //食物 public static URL foodURL = Data.class.getResource("statics/food.png"); public static ImageIcon food = new ImageIcon(foodURL);}3、代码主体部分：在panel面板上实现游戏初始化，键盘和事件的监听等功能
package com.abc.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;//游戏的面板public class GamePanel extends JPanel implements KeyListener, ActionListener { //定义蛇的数据结构 int length; //蛇的长度 int[] snakeX = new int[600]; //蛇的x坐标 25*25 int[] snakeY = new int[500]; //蛇的y坐标 25*25 String fx; //食物 int foodx; int foody; Random random = new Random(); int score; //游戏分数 //游戏当前的状态 boolean isStart = false; boolean isFail = false; //定时器 Timer timer = new Timer(100,this);//100毫秒刷新一次 //构造方法 public GamePanel() { init();//初始化 this.setFocusable(true); //获得焦点事件 this.addKeyListener(this); //获得键盘监听事件 timer.start(); //游戏一开始 定时器就启动 } //初始化方法 public void init(){ length = 3; //初始化开始的蛇，给蛇定位 snakeX[0] = 100;snakeY[0] = 100; snakeX[1] = 75;snakeY[1] = 100; snakeX[2] = 50;snakeY[2] = 100; fx = "R"; //初始方向向右 //初始化食物数据 foodx = 25 + 25*random.nextInt(34); foody = 75 + 25*random.nextInt(24); //初始化游戏分数 score = 0; } //绘制面板 @Override protected void paintComponent(Graphics g) { super.paintComponent(g);//清屏 this.setBackground(Color.white);//设置面板背景色 Data.header.paintIcon(this,g,25,11);//头部 g.fillRect(25,75,850,600);//默认的黑色游戏区域 //绘制小蛇 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 < length; i++) { Data.body.paintIcon(this,g,snakeX[i],snakeY[i]); } //食物 Data.food.paintIcon(this,g,foodx,foody); //积分 g.setColor(Color.white); g.setFont(new Font("微软雅黑",Font.BOLD,18)); g.drawString("长度 "+length,750,35); g.drawString("分数 "+score,750,50); //游戏状态 if (isStart == false){ g.setColor(Color.white); g.setFont(new Font("微软雅黑",Font.BOLD,40));//设置字体 g.drawString("按下空格开始游戏",300,300); } //失败判断 if (isFail){ g.setColor(Color.red); g.setFont(new Font("微软雅黑",Font.BOLD,40));//设置字体 g.drawString("游戏失败，按下空格重新开始",300,300); } } //键盘监听事件 @Override public void keyPressed(KeyEvent e) { int keyCode = e.getKeyCode(); //获取按键 if (keyCode == KeyEvent.VK_SPACE){ if (isFail){ //重新开始 isFail=false; init(); }else { isStart =! isStart; } repaint(); } //键盘控制小蛇移动 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，就让小蛇动起来 //移动 for (int i = length-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; } } //吃食物 if (snakeX[0] == foodx && snakeY[0] == foody){ length++; score = score + 10; //再次随机食物 foodx = 25 + 25*random.nextInt(34); foody = 75 + 25*random.nextInt(24); } //失败判定,撞到自己 for (int i = 1; i < length; i++) { if (snakeX[0]==snakeX[i] && snakeY[0]==snakeY[i]){ isFail=true; } } repaint(); } timer.start(); } @Override public void keyTyped(KeyEvent e) { } @Override public void keyReleased(KeyEvent e) { }}4、代码运行效果图
初始化界面:
游戏中界面：
游戏结束界面：
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