第12天 用java做贪吃蛇

package com.Mxs.www;

import javax.swing.*;

public class Mgeme {
    public static void main(String[] args) {
//        绘制jframe
        JFrame frame = new JFrame("马晓帅贪吃蛇");
        frame.setBounds(10,10,900,720);
        frame.setResizable(false);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        frame.add(new Meme1());

        frame.setVisible(true);

    }

}

绘制静态面板

package com.Mxs.www;
import javax.swing.*;
import java.net.URL;

public class Data {
//    广告头部
    public static URL headerUrl=Data.class.getResource("/static/header.png");
    public static ImageIcon header = new ImageIcon(headerUrl);
//    蛇头
    public static URL upUrl=Data.class.getResource("/static/up.png");
    public static URL downUrl=Data.class.getResource("/static/down.png");
    public static URL leftUrl=Data.class.getResource("/static/left.png");
    public static URL rightUrl=Data.class.getResource("/static/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);

    public static URL bodyUrl=Data.class.getResource("/static/body.png");
    public static URL footUrl=Data.class.getResource("/static/food.png");
    public static ImageIcon body = new ImageIcon(bodyUrl);
    public static ImageIcon foot = new ImageIcon(footUrl);

}

引入资源图

package com.Mxs.www;

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 Meme1 extends JPanel implements KeyListener, ActionListener {
    int length;
    int[] snakesX = new int[600];
    int[] snakeY = new int[500];

    String fx;
    boolean isStart = false;


    Timer timer = new Timer(100,this);

    int foodx;
    int foody;

    Random random = new Random();

    boolean isFail = false;

    int score;
    public Meme1(){
        init();
//        获取键盘监听
        this.setFocusable(true);
        this.addKeyListener(this);
        timer.start();
    }

    public void init(){
        length = 3;
        snakesX[0] = 100;
        snakeY[0]=100;
        snakesX[1] = 75;
        snakeY[1]=100;
        snakesX[2] = 50;
        snakeY[2]=100;
        fx = "R";

        foodx = 25+25*random.nextInt(34);
        foody = 75+25*random.nextInt(24);
        score=0;

    }
//    画板  化界面 化蛇
    protected void paintComponent(Graphics g){
        super.paintComponent(g);
        this.setBackground(Color.white);
//        绘制广告栏
       Data.header.paintIcon(this,g,25,11);
       g.fillRect(15,75,850,600);
//       画静态小蛇
        Data.right.paintIcon(this,g, snakesX[0], snakeY[0]);
//        Data.body.paintIcon(this,g, snakesX[1], snakeY[1]);
//        Data.body.paintIcon(this,g, snakesX[2], snakeY[2]);

        if (fx.equals("R")){
            Data.right.paintIcon(this,g, snakesX[0], snakeY[0]);
        }else if (fx.equals("l")){
            Data.left.paintIcon(this,g, snakesX[0], snakeY[0]);
        }else if (fx.equals("U")){
            Data.up.paintIcon(this,g, snakesX[0], snakeY[0]);
        }else if (fx.equals("D")){
            Data.down.paintIcon(this,g, snakesX[0], snakeY[0]);
        }

        for (int i=1;i<length;i++){
            Data.body.paintIcon(this,g, snakesX[i], snakeY[i]);
        }

//        花食物
        Data.foot.paintIcon(this,g,foodx,foody);

        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);


        //提示
        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",300,300);
        }
        if (isFail){
            g.setColor(Color.RED);
            g.setFont(new Font("微软雅黑",Font.BOLD,40));
            g.drawString("游戏失败,按下空格开始",200,300);
        }


    }

    @Override
    public void keyTyped(KeyEvent e) {
        //键盘桥下
    }
    @Override
    public void keyReleased(KeyEvent e) {

    }




    @Override
    public void keyPressed(KeyEvent e) {
        //    释放键盘
        //接受键盘
        int KeyCode = e.getKeyCode();
        if (KeyCode == KeyEvent.VK_SPACE){
            if (isFail){
                isFail=false;
                init();
            }else{
                isStart = !isStart;
            }
            repaint();
        }
        if (KeyCode == KeyEvent.VK_LEFT){
            fx="l";
        }else if (KeyCode == KeyEvent.VK_RIGHT){
            fx="R";
        }else if (KeyCode == KeyEvent.VK_DOWN){
            fx="D";
        }else if (KeyCode == KeyEvent.VK_UP){
            fx="U";
        }
    }

    @Override
//    执行定时操作
    public void actionPerformed(ActionEvent e) {
//        如果游戏开始
        if (isStart && isFail == false){
            for (int i=length-1;i>0;i--){
                snakesX[i]=snakesX[i-1];
                snakeY[i]=snakeY[i-1];
            }
            if (fx.equals("R")){
                snakesX[0] = snakesX[0]+25;
                if (snakesX[0] > 850){ snakesX[0]=25;}
            } else if (fx.equals("l")){
                snakesX[0]=snakesX[0]-25;
                if (snakesX[0] < 25){ snakesX[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; }
            }

            if (snakesX[0] == foodx && snakeY[0]==foody){
                length++;
                score = score+10;
                foodx = 25+25*random.nextInt(34);
                foody = 75+25*random.nextInt(24);
            }

            for (int i = 1; i < length; i++) {
                if (snakesX[0] == snakesX[i] && snakeY[0] == snakeY[i]){
                    isFail=true;
                }
            }

            repaint();
        }
        timer.start();
    }
//    定时器
}

逻辑实现
用到键盘事件  计时器等 完成一共用了两天事件 总共两小时 java初学者 效果图  v