Java实现简单的贪吃蛇游戏

本文实例为大家分享了Java实现简单贪吃蛇游戏的具体代码，供大家参考，具体内容如下

代码

启动类

package snake;import javax.swing.*;//游戏的主启动类public class StartGame { public static void main(String[] args) {JFrame frame = new JFrame('贪吃蛇');frame.setBounds(10,10,900,720);frame.setResizable(false); //窗口不可调整frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);//正常游戏界面都应该在面板上frame.add(new GamePanel());frame.setVisible(true); }}

游戏画板

package 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;//游戏面板public class GamePanel extends JPanel implements KeyListener, ActionListener { int lenth; //蛇的长度 int [] snakeX = new int[600]; //定义蛇的坐标X int [] snakeY = new int[500]; //定义蛇的坐标Y String fx ;//定义方向R：右 L：左 U：上 D：下 boolean isStart = false; //游戏是否开始 Timer timer = new Timer(120,this);//定时器 //定义一个食物 int foodx; int foody; Random random = new Random(); //定义死亡判断 boolean isFail = false;//默认不失败 //积分系统 int score; //构造器 public GamePanel(){init();//获取键盘的监听事件this.setFocusable(true);this.addKeyListener(this);timer.start(); } //初始化 public void init(){lenth = 3;snakeX[0] = 100;snakeY[0] = 100;//头部坐标snakeX[1] = 75;snakeY[1] = 100;//第一个身体坐标snakeX[2] = 50;snakeY[2] = 100;//第二个身体坐标fx = 'R';//蛇头初始方向//初始化食物foodx = 25 + 25 * random.nextInt(34);foody = 75 + 25 * random.nextInt(24);score = 0; } //绘制面板,游戏中的所以东西都使用这个东西来画 @Override protected void paintComponent(Graphics g) {super.paintComponent(g); //清屏作用//绘制静态的面板this.setBackground(Color.white);Data.header.paintIcon(this,g,25,11);//放进头部广告g.fillRect(25,75,850,600);//默认游戏界面//画一条静态的小蛇if (fx.equals('R')){ Data.right.paintIcon(this,g,snakeX[0],snakeY[0]);}else if (fx.equals('L')){ Data.left.paintIcon(this,g,snakeX[0],snakeY[0]);}else if (fx.equals('U')){ Data.up.paintIcon(this,g,snakeX[0],snakeY[0]);}else if (fx.equals('D')){ Data.down.paintIcon(this,g,snakeX[0],snakeY[0]);}//蛇的身体长度通过length来控制for (int i = 1;i < lenth;i++){ Data.body.paintIcon(this,g,snakeX[i],snakeY[i]);}//画积分g.setColor(Color.white);g.setFont(new Font('微软雅黑',Font.BOLD,20));g.drawString('长度'+lenth,700,45);g.drawString('分数'+score,780,45);//画食物Data.food.paintIcon(this,g,foodx,foody);//游戏提示：是否开始if (isStart == false){ //画一个文字String来提示开始 g.setColor(Color.white); //定义颜色 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);}//失败提醒if (isFail){ //画一个文字String来提示失败 g.setColor(Color.RED); //定义颜色 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',200,300);} }//接收键盘的输入：监听事件 @Override//键盘按下，未释放 public void keyPressed(KeyEvent e) {//获取按下键盘的信息int keyCode = e.getKeyCode();if(keyCode==KeyEvent.VK_SPACE){//如果按下空格键 if (isFail){//游戏失败，重新开始isFail = false;init();//重新初始化游戏 }else {//暂停游戏isStart = !isStart; } repaint();//刷新界面，重置}//键盘控制走向if (keyCode==KeyEvent.VK_LEFT){ fx = 'L';}else if (keyCode==KeyEvent.VK_RIGHT){ fx = 'R';}else if (keyCode==KeyEvent.VK_UP) { fx = 'U';}else if (keyCode==KeyEvent.VK_DOWN) { fx = 'D';} } //定时器，监听时间，帧，执行定时操作 @Override public void actionPerformed(ActionEvent e) {//如果游戏处于开始状态，并且游戏没有失败if (isStart && isFail == false){ //右移 for (int i = lenth-1 ;i > 0;i--){ //身体向前移动snakeX[i] = snakeX[i-1];snakeY[i] = snakeY[i-1]; } //通过控制方向让头部移动 if (fx.equals('R')){snakeX[0] = snakeX[0] + 25;//头部移动if (snakeX[0]>850){ snakeX[0] = 25; }//右边界判断 }else if (fx.equals('L')){snakeX[0] =snakeX[0] - 25;//头部移动if (snakeX[0]<25){ snakeX[0] = 850;}//左边界判断 }else if (fx.equals('U')){snakeY[0] =snakeY[0] - 25;//头部移动if (snakeY[0]<75){ snakeY[0] = 650;}//上边界判断 }else if (fx.equals('D')){snakeY[0] =snakeY[0] + 25;//头部移动if (snakeY[0]>650){ snakeY[0] = 75;}//下边界判断 } //如果食物和蛇头坐标重合 if (snakeX[0]==foodx && snakeY[0]==foody){lenth ++;//蛇的身体长度加一score = score + 10;//重新生成食物foodx = 25 +25 * random.nextInt(34);foody = 75 +25 * random.nextInt(24); } //结束判断 for (int i = 1; i<lenth;i++){if (snakeX[0]==snakeX[i] && snakeY[0]==snakeY[i]){ isFail = true;} } repaint();//刷新界面}timer.start();//让时间动起来 } @Override//键盘按下，弹起 public void keyTyped(KeyEvent e) { } @Override//释放某个键 public void keyReleased(KeyEvent e) { }}

游戏数据（存放图片）

package snake;import javax.swing.*;import java.net.URL;//数据中心public class Data { //相对路径 tx.jpg 绝对路径 /相当于当前的项目 //头部图片 URL 定位图片地址 public static URL headerURL = Data.class.getResource('/statics/header.png'); public static ImageIcon header = new ImageIcon(headerURL); //上下左右移动 public static URL upUrl = Data.class.getResource('/statics/up.png'); public static ImageIcon up = new ImageIcon(upUrl); public static URL downUrl = Data.class.getResource('/statics/down.png'); public static ImageIcon down = new ImageIcon(downUrl); public static URL leftUrl = Data.class.getResource('/statics/left.png'); public static ImageIcon left = new ImageIcon(leftUrl); public static URL rightUrl = Data.class.getResource('/statics/right.png'); 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);}

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