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Java實現(xiàn)簡易GUI貪吃蛇小游戲

更新時間：2021年09月13日 16:01:08 作者：姜泥誓殺徐鳳年

這篇文章主要為大家詳細(xì)介紹了Java實現(xiàn)簡易GUI貪吃蛇小游戲，文中示例代碼介紹的非常詳細(xì)，具有一定的參考價值，感興趣的小伙伴們可以參考一下

本文實例為大家分享了Java實現(xiàn)貪吃蛇小游戲的具體代碼，供大家參考，具體內(nèi)容如下

主啟動類

import javax.swing.*;

/**
 * @author The Setting sun
 * @create 2021-09-11 15:19
 */
//主啟動類
public class StartGame {
    public static void main(String[] args) {
        JFrame frame = new JFrame();

        frame.setResizable(false);//窗口大小不可變
        frame.setSize(900, 720);//窗口大小
        frame.setLocationRelativeTo(null);//窗口居中
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);//窗口關(guān)閉事件

        frame.add(new GamePanel());

        frame.setVisible(true);//窗口可見
    }
}

資源類（圖標(biāo)）

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);
}

程序類

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.Random;

/**
 * @author The Setting sun
 * @create 2021-09-11 15:24
 */
//游戲面板
public class GamePanel extends JPanel implements KeyListener, ActionListener {
    //蛇
    int length;//蛇的長度
    int[] snakeX = new int[600];//蛇的x坐標(biāo) 25*25
    int[] snakeY = new int[500];//蛇的y坐標(biāo) 25*25
    String orient;//初始方向

    //食物
    int foodX;
    int foodY;
    Random random = new Random();

    boolean isStart = false;//游戲當(dāng)前狀態(tài)：默認(rèn)為停止
    boolean isFail = false;//游戲是否失敗了，默認(rèn)為沒有

    int score;//積分

    //定時器 ms為單位
    Timer timer = new Timer(140, this);//100毫秒刷新一次

    //構(gòu)造器
    public GamePanel() {
        init();//初始化
        setFocusable(true);//獲得焦點
        addKeyListener(this);//獲得鍵盤監(jiān)聽事件
        timer.start();//游戲一開始定時器就啟動
    }

    //初始化
    public void init() {
        length = 3;//初始長度為3

        snakeX[0] = 100;
        snakeY[0] = 100;//頭的坐標(biāo)

        snakeX[1] = 75;
        snakeY[1] = 100;//第1個身體的坐標(biāo)

        snakeX[2] = 50;
        snakeY[2] = 100;//第2個身體的坐標(biāo)

        orient = "R";//初始方向向右

        //讓食物隨機(jī)分布在界面上
        foodX = 25 + 25 * random.nextInt(34);
        foodY = 75 + 25 * random.nextInt(24);

        score = 0;//積分
    }


    //繪制面板，游戲中的東西都用這個來畫
    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);//清屏
        setBackground(Color.pink);

        //繪制靜態(tài)面板
        Data.header.paintIcon(this, g, 25, 11);
        g.fillRect(25, 75, 850, 600);

        //繪制積分面板
        g.setColor(Color.GREEN);
        g.setFont(new Font("微軟雅黑", Font.BOLD, 16));
        g.drawString("長度：" + length, 750, 35);
        g.drawString("積分：" + score, 750, 50);

        //繪制食物
        Data.food.paintIcon(this, g, foodX, foodY);

        //繪制蛇
        switch (orient) {
            case "R":
                Data.right.paintIcon(this, g, snakeX[0], snakeY[0]);//蛇初始化向右，通過判斷轉(zhuǎn)變方向
                break;
            case "L":
                Data.left.paintIcon(this, g, snakeX[0], snakeY[0]);//蛇初始化向右，通過判斷轉(zhuǎn)變方向
                break;
            case "U":
                Data.up.paintIcon(this, g, snakeX[0], snakeY[0]);//蛇初始化向右，通過判斷轉(zhuǎn)變方向
                break;
            case "D":
                Data.down.paintIcon(this, g, snakeX[0], snakeY[0]);//蛇初始化向右，通過判斷轉(zhuǎn)變方向
                break;
        }


        //動態(tài)添加身體
        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個身體的坐標(biāo)
//        Data.body.paintIcon(this,g,snakeX[2],snakeY[2]);//第2個身體的坐標(biāo)

        //游戲狀態(tài)
        if (isStart == false) {
            g.setColor(Color.WHITE);
            g.setFont(new Font("微軟雅黑", Font.BOLD, 40));
            g.drawString("按下空格開始游戲", 300, 300);
        }

        if (isFail) {
            g.setColor(Color.RED);
            g.setFont(new Font("微軟雅黑", Font.BOLD, 40));
            g.drawString("猶豫就會敗北！", 300, 300);
        }
    }

    //鍵盤監(jiān)聽器
    @Override
    public void keyPressed(KeyEvent e) {//按下
        int keyCode = e.getKeyCode();//獲得鍵盤按鍵碼

        if (keyCode == KeyEvent.VK_SPACE) {//按下空格
            if (isFail) {
                //重新開始
                isFail = false;
                init();
            } else {
                isStart = !isStart;//取反
                repaint();
            }
        }

        //修復(fù)了一個蛇可以反向移動的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;
        }

        //控制蛇改變方向移動
        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;
        }


    }

    //事件監(jiān)聽：需要通過固定事件來刷新，1秒10次（幀率）
    @Override
    public void actionPerformed(ActionEvent e) {
        if (isStart && isFail == false) {//如果游戲是開始狀態(tài)，就讓蛇動起來
            //吃食物
            if (snakeX[0] == foodX && snakeY[0] == foodY) {
                //長度+1
                length++;
                score += 10;

                //再次讓食物隨機(jī)出現(xiàn)
                foodX = 25 + 25 * random.nextInt(34);
                foodY = 75 + 25 * random.nextInt(24);
            }

            //身體移動
            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;
                    //邊界判斷
                    if (snakeX[0] > 850) {
                        snakeX[0] = 25;
                    }
                    break;
                case "L":
                    snakeX[0] = snakeX[0] - 25;
                    //邊界判斷
                    if (snakeX[0] < 25) {
                        snakeX[0] = 850;
                    }
                    break;
                case "U":
                    snakeY[0] = snakeY[0] - 25;
                    //邊界判斷
                    if (snakeY[0] < 75) {
                        snakeY[0] = 650;
                    }
                    break;
                case "D":
                    snakeY[0] = snakeY[0] + 25;
                    //邊界判斷
                    if (snakeY[0] > 650) {
                        snakeY[0] = 75;
                    }
                    break;
            }

            //失敗判斷，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();//刷新頁面
        }

        timer.start();//定時器開啟
    }

    @Override
    public void keyTyped(KeyEvent e) {

    }

    @Override
    public void keyReleased(KeyEvent e) {

    }
}

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