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Java实现简易GUI贪吃蛇小游戏

时间:2021-12-30 12:16     来源/作者:姜泥誓杀徐凤年

本文实例为大家分享了Java实现贪吃蛇小游戏的具体代码,供大家参考,具体内容如下

主启动类

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import javax.swing.*;
 
/**
 * @author The Setting sun
 * @create 2021-09-11 15:19
 */
//主启动类
public class StartGame {
    public static void main(String[] args) {
        JFrame frame = new JFrame();
 
        frame.setResizable(false);//窗口大小不可变
        frame.setSize(900, 720);//窗口大小
        frame.setLocationRelativeTo(null);//窗口居中
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);//窗口关闭事件
 
        frame.add(new GamePanel());
 
        frame.setVisible(true);//窗口可见
    }
}

资源类(图标)

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import javax.swing.*;
import java.net.URL;
 
/**
@author The Setting sun
@create 2021-09-11 15:40
*/
public class Data {
    public static URL headerURL = Data.class.getResource("img/header.png");
    public static ImageIcon header = new ImageIcon(headerURL);
 
    public static URL upURL = Data.class.getResource("img/tx.png");
    public static ImageIcon up = new ImageIcon(upURL);
 
    public static URL downURL = Data.class.getResource("img/down.png");
    public static ImageIcon down = new ImageIcon(downURL);
 
    public static URL rightURL = Data.class.getResource("img/right.png");
    public static ImageIcon right = new ImageIcon(rightURL);
 
    public static URL leftURL = Data.class.getResource("img/left.png");
    public static ImageIcon left = new ImageIcon(leftURL);
 
    public static URL bodyURL = Data.class.getResource("img/body.png");
    public static ImageIcon body = new ImageIcon(bodyURL);
 
    public static URL foodURL = Data.class.getResource("img/food.png");
    public static ImageIcon food = new ImageIcon(foodURL);
}

程序类

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import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.Random;
 
/**
 * @author The Setting sun
 * @create 2021-09-11 15:24
 */
//游戏面板
public class GamePanel extends JPanel implements KeyListener, ActionListener {
    //蛇
    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 orient;//初始方向
 
    //食物
    int foodX;
    int foodY;
    Random random = new Random();
 
    boolean isStart = false;//游戏当前状态:默认为停止
    boolean isFail = false;//游戏是否失败了,默认为没有
 
    int score;//积分
 
    //定时器 ms为单位
    Timer timer = new Timer(140, this);//100毫秒刷新一次
 
    //构造器
    public GamePanel() {
        init();//初始化
        setFocusable(true);//获得焦点
        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
    public void init() {
        length = 3;//初始长度为3
 
        snakeX[0] = 100;
        snakeY[0] = 100;//头的坐标
 
        snakeX[1] = 75;
        snakeY[1] = 100;//第1个身体的坐标
 
        snakeX[2] = 50;
        snakeY[2] = 100;//第2个身体的坐标
 
        orient = "R";//初始方向向右
 
        //让食物随机分布在界面上
        foodX = 25 + 25 * random.nextInt(34);
        foodY = 75 + 25 * random.nextInt(24);
 
        score = 0;//积分
    }
 
 
    //绘制面板,游戏中的东西都用这个来画
    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);//清屏
        setBackground(Color.pink);
 
        //绘制静态面板
        Data.header.paintIcon(this, g, 25, 11);
        g.fillRect(25, 75, 850, 600);
 
        //绘制积分面板
        g.setColor(Color.GREEN);
        g.setFont(new Font("微软雅黑", Font.BOLD, 16));
        g.drawString("长度:" + length, 750, 35);
        g.drawString("积分:" + score, 750, 50);
 
        //绘制食物
        Data.food.paintIcon(this, g, foodX, foodY);
 
        //绘制蛇
        switch (orient) {
            case "R":
                Data.right.paintIcon(this, g, snakeX[0], snakeY[0]);//蛇初始化向右,通过判断转变方向
                break;
            case "L":
                Data.left.paintIcon(this, g, snakeX[0], snakeY[0]);//蛇初始化向右,通过判断转变方向
                break;
            case "U":
                Data.up.paintIcon(this, g, snakeX[0], snakeY[0]);//蛇初始化向右,通过判断转变方向
                break;
            case "D":
                Data.down.paintIcon(this, g, snakeX[0], snakeY[0]);//蛇初始化向右,通过判断转变方向
                break;
        }
 
 
        //动态添加身体
        for (int i = 1; i < length; i++) {
            Data.body.paintIcon(this, g, snakeX[i], snakeY[i]);
        }
//        Data.body.paintIcon(this,g,snakeX[1],snakeY[1]);//第1个身体的坐标
//        Data.body.paintIcon(this,g,snakeX[2],snakeY[2]);//第2个身体的坐标
 
        //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);
        }
 
        if (isFail) {
            g.setColor(Color.RED);
            g.setFont(new Font("微软雅黑", Font.BOLD, 40));
            g.drawString("犹豫就会败北!", 300, 300);
        }
    }
 
    //键盘监听器
    @Override
    public void keyPressed(KeyEvent e) {//按下
        int keyCode = e.getKeyCode();//获得键盘按键码
 
        if (keyCode == KeyEvent.VK_SPACE) {//按下空格
            if (isFail) {
                //重新开始
                isFail = false;
                init();
            } else {
                isStart = !isStart;//取反
                repaint();
            }
        }
 
        //修复了一个蛇可以反向移动的bug
        if (orient.equals("U") && keyCode == KeyEvent.VK_DOWN){
            keyCode = KeyEvent.VK_UP;
        }
 
        if (orient.equals("D") && keyCode == KeyEvent.VK_UP){
            keyCode = KeyEvent.VK_DOWN;
        }
 
        if (orient.equals("L") && keyCode == KeyEvent.VK_RIGHT){
            keyCode = KeyEvent.VK_LEFT;
        }
 
        if (orient.equals("R") && keyCode == KeyEvent.VK_LEFT){
            keyCode = KeyEvent.VK_RIGHT;
        }
 
        //控制蛇改变方向移动
        switch (keyCode) {
            case KeyEvent.VK_UP:
 
                orient = "U";
                break;
            case KeyEvent.VK_DOWN:
                orient = "D";
                break;
            case KeyEvent.VK_LEFT:
                orient = "L";
                break;
            case KeyEvent.VK_RIGHT:
                orient = "R";
                break;
        }
 
 
    }
 
    //事件监听:需要通过固定事件来刷新,1秒10次(帧率)
    @Override
    public void actionPerformed(ActionEvent e) {
        if (isStart && isFail == false) {//如果游戏是开始状态,就让蛇动起来
            //吃食物
            if (snakeX[0] == foodX && snakeY[0] == foodY) {
                //长度+1
                length++;
                score += 10;
 
                //再次让食物随机出现
                foodX = 25 + 25 * random.nextInt(34);
                foodY = 75 + 25 * random.nextInt(24);
            }
 
            //身体移动
            for (int i = length - 1; i > 0; i--) {
                snakeX[i] = snakeX[i - 1];
                snakeY[i] = snakeY[i - 1];
            }
 
            //走向
            switch (orient) {
                case "R":
                    snakeX[0] = snakeX[0] + 25;
                    //边界判断
                    if (snakeX[0] > 850) {
                        snakeX[0] = 25;
                    }
                    break;
                case "L":
                    snakeX[0] = snakeX[0] - 25;
                    //边界判断
                    if (snakeX[0] < 25) {
                        snakeX[0] = 850;
                    }
                    break;
                case "U":
                    snakeY[0] = snakeY[0] - 25;
                    //边界判断
                    if (snakeY[0] < 75) {
                        snakeY[0] = 650;
                    }
                    break;
                case "D":
                    snakeY[0] = snakeY[0] + 25;
                    //边界判断
                    if (snakeY[0] > 650) {
                        snakeY[0] = 75;
                    }
                    break;
            }
 
            //失败判断,撞到自己就GG
            for (int i = 1 ; i < length; i++) {
                if (snakeX[0] == snakeX[i] && snakeY[0] == snakeY[i]){
                    isFail = true;
                }
            }
 
            repaint();//刷新页面
        }
 
        timer.start();//定时器开启
    }
 
    @Override
    public void keyTyped(KeyEvent e) {
 
    }
 
    @Override
    public void keyReleased(KeyEvent e) {
 
    }
}

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。

原文链接:https://blog.csdn.net/m0_51642083/article/details/120256042

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