Java实现经典游戏FlappyBird的示例代码

2024-04-02 19:04:59 830人浏览泡泡鱼

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摘要

目录前言主要设计功能截图代码实现游戏启动类核心类工具类总结前言《布谷鸟闯关-简单版》是一个基于java的布谷鸟闯关游戏，摁上键控制鸟的位置穿过管道间的缝隙，需要做碰撞检测，监听键盘

前言

《布谷鸟闯关-简单版》是一个基于java的布谷鸟闯关游戏，摁上键控制鸟的位置穿过管道间的缝隙，需要做碰撞检测，监听键盘事件，背景图片的切换，障碍物管道产生时y轴上需要随机位置。

主要设计

设计游戏界面，用swing实现
设计背景
设计移动墙
设计布谷鸟
设计障碍物
设计背景音乐和音效
由几个关键的布尔类型变量start,crash,over是产生键键盘事件时用来控制界面显示的弹框的
操作：空格键开始游戏，enter键取消"game over"弹框，摁空格键继续，上键(up)是对鸟的控制
工具类ImageMgr专用于读取图片

功能截图

游戏开始：

控制布谷鸟

飞过障碍物

撞到障碍物，游戏结束

代码实现

游戏启动类


public class Main {
    public static void main(String[] args) {
        Cuckoo frame = new Cuckoo();
        while (true){
            try {
                Thread.sleep(100);
                if(!frame.crash){
                    frame.repaint();
                }
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}

核心类


public class Cuckoo extends Frame {
    private int step;
    private int score;
    private int height;
    private int moveLeft;
    private int pipeMove;

    boolean crash = false;
    private boolean over = false;
    private boolean start = false;

    private static int bird_y = 270;
    private static final int L_X = 800;
    private static final int L_Y = 200;
    private static final int SPEED = 2;
    private static final int BIRD_X = 100;
    private static final int GAME_X_Y_0 = 0;
    private static final int GAME_WIDTH = 288;
    private static final int GAME_HEIGHT = 512;
    private static final int PIPE_WIDTH = ImageMgr.pipe.getWidth();
    private static final int PIPE_HEIGHT = ImageMgr.pipe.getHeight();
    private static final int READY_WIDTH = ImageMgr.ready.getWidth();
    private static final int READY_HEIGHT = ImageMgr.ready.getHeight();
    private static final int START_WIDTH = ImageMgr.start.getWidth();
    private static final int BIRD_WIDTH = ImageMgr.bird[0].getWidth();
    private static final int BIRD_HEIGHT = ImageMgr.bird[0].getWidth();
    private static final int GROUND_HEIGHT = ImageMgr.ground.getHeight();
    private static final int GAME_OVER_WIDTH = ImageMgr.gameOver.getWidth();
    private static final int GAME_OVER_HEIGHT = ImageMgr.gameOver.getHeight();
    private static final int BACKGROUND_HEIGHT = ImageMgr.background.getHeight();

    private static Image offScreenImage;
    private static Rectangle pipeRectangle1;
    private static Rectangle pipeRectangle2;
    private static Rectangle birdRectangle;

    Cuckoo(){
        setVisible(true);
        setResizable(false);
        //setTitle("cuckoo");
        setBounds(L_X, L_Y,GAME_WIDTH,GAME_HEIGHT);

        addKeyListener(new KeyAdapter() {
            @Override
            public void keyPressed(KeyEvent e) {
                switch (e.geTKEyCode()){
                    case KeyEvent.VK_SPACE : start = true;break;
                    case KeyEvent.VK_ENTER : reopen();break;
                }
            }

            @Override
            public void keyReleased(KeyEvent e) {
                if (e.getKeyCode() == KeyEvent.VK_UP) {
                    bird_y -= 20;
                }
            }
        });

        addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
    }

    @Override
    public void update(Graphics g) {
        if(offScreenImage == null){
            offScreenImage = this.createImage(GAME_WIDTH,GAME_HEIGHT);
        }
        Graphics GoffScreen = offScreenImage.getGraphics();
        Color c = gOffScreen.getColor();
        gOffScreen.setColor(Color.BLACK);
        gOffScreen.fillRect(0,0,GAME_WIDTH,GAME_HEIGHT);
        gOffScreen.setColor(c);
        paint(gOffScreen);
        g.drawImage(offScreenImage,0,0,null);
    }

    @Override
    public void paint(Graphics g) {
        background(g);
        ground(g);
        start(g);

        if(start){
            bird(g);
            pipe(g);
            colliedWith();
            gameOver(g);
            score(g);
        }

    }

    //如果碰撞后，可以嗯enter键重开
    private void reopen(){
        if(crash){
            score = 0;
            over = false;
            crash = false;
            start = false;
            moveLeft = 0;
            pipeMove = 0;
            //bird_y = 270;//继上次死的位置开始
        }
    }

    private void score(Graphics g){
        Font font = new Font("微软雅黑",Font.BOLD,18);
        g.setFont(font);
        Color c = g.getColor();
        g.setColor(Color.lightGray);
        g.drawString("score " + score,20,70);
        g.setColor(c);
    }

    private void background(Graphics g){
        g.drawImage(ImageMgr.background,
                GAME_X_Y_0 - moveLeft,GAME_X_Y_0,
                GAME_WIDTH - moveLeft,GAME_HEIGHT,
                GAME_X_Y_0,
                GAME_X_Y_0,
                GAME_WIDTH,
                GAME_HEIGHT, null);
        g.drawImage(ImageMgr.background,
                GAME_WIDTH-1 - moveLeft,GAME_X_Y_0,
                GAME_WIDTH*2 - moveLeft, GAME_HEIGHT,
                GAME_X_Y_0,
                GAME_X_Y_0,
                GAME_WIDTH,
                GAME_HEIGHT, null);
        moveLeft += SPEED;
        //游戏启动计分
        if(start && moveLeft % 100 == 0){
            score += 1;
        }
        if(moveLeft >= GAME_WIDTH){
            moveLeft = 0;
        }
    }

    private void ground(Graphics g){
        g.drawImage(ImageMgr.ground,0,BACKGROUND_HEIGHT - GROUND_HEIGHT,null);
    }

    private void bird(Graphics g){
        Color c = g.getColor();
        g.setColor(Color.BLUE);
        g.drawRect(BIRD_X, bird_y,BIRD_WIDTH,BIRD_HEIGHT);
        g.setColor(c);

        g.drawImage(ImageMgr.bird[step++], BIRD_X, bird_y,null);
        if(step >= ImageMgr.bird.length){
            step = 0;
        }

        if(start){
            bird_y += 4;
        }

        birdRectangle = new Rectangle(BIRD_X,bird_y,BIRD_WIDTH,BIRD_HEIGHT);
    }

    private void pipe(Graphics g){
        drawPipe(g);
        pipeMove += SPEED;
        if(pipeMove >= GAME_WIDTH + PIPE_WIDTH){
            pipeMove = 0;
            Random ran = new Random();
            height = ran.nextInt(10)*20;
            drawPipe(g);
        }

    }

    private void drawPipe(Graphics g){
        g.setColor(Color.RED);
//        g.drawRect(GAME_WIDTH - pipeMove,GAME_HEIGHT/5*3 - height,PIPE_WIDTH,PIPE_HEIGHT);
//        g.drawRect(GAME_WIDTH - pipeMove,-GAME_HEIGHT/5*4 - height,PIPE_WIDTH,PIPE_HEIGHT);

        g.drawImage(ImageMgr.pipe,GAME_WIDTH - pipeMove,GAME_HEIGHT/5*3 - height,null);
        g.drawImage(ImageMgr.pipe,GAME_WIDTH - pipeMove,-GAME_HEIGHT/5*4 - height,null);

        pipeRectangle1 = new Rectangle(GAME_WIDTH - pipeMove,GAME_HEIGHT/5*3 - height,PIPE_WIDTH,PIPE_HEIGHT);
        pipeRectangle2 = new Rectangle(GAME_WIDTH - pipeMove,-GAME_HEIGHT/5*4 - height,PIPE_WIDTH,PIPE_HEIGHT);
    }

    private void gameOver(Graphics g){
        if(over){
            g.drawImage(ImageMgr.gameOver,GAME_WIDTH/2 - GAME_OVER_WIDTH/2, GAME_HEIGHT/2 - GAME_OVER_HEIGHT,null);
        }
    }

    private void start(Graphics g){
        if(!start){
            g.drawImage(ImageMgr.ready,GAME_WIDTH/2 - READY_WIDTH/2, GAME_HEIGHT/2 - READY_HEIGHT,null);
            g.drawImage(ImageMgr.start,GAME_WIDTH/2 - START_WIDTH/2, GAME_HEIGHT/2,null);
        }
    }

    private void colliedWith(){
        if(birdRectangle.intersects(pipeRectangle1) || birdRectangle.intersects(pipeRectangle2)){
            crash = true;
            over = true;
            //gameOver(g);
        }
    }
}

工具类

public class ImageMgr {
    static BufferedImage background,ground,pipe,gameOver,start,ready;
    static BufferedImage[] bird = new BufferedImage[3];
    private static final ImageMgr INSTANCE = new ImageMgr();
    //nothing
    private ImageMgr(){
        initImage();
    };

    private void initImage(){
        try {
            background = ImageIO.read(Objects.requireNonNull(Cuckoo.class.getClassLoader().getResourceAsStream("images/bg_light.png")));
            ground = ImageIO.read(Objects.requireNonNull(Cuckoo.class.getClassLoader().getResourceAsStream("images/ground.png")));
            pipe = ImageIO.read(Objects.requireNonNull(Cuckoo.class.getClassLoader().getResourceAsStream("images/pipe.png")));
            gameOver = ImageIO.read(Objects.requireNonNull(Cuckoo.class.getClassLoader().getResourceAsStream("images/gameover.png")));
            start = ImageIO.read(Objects.requireNonNull(Cuckoo.class.getClassLoader().getResourceAsStream("images/start.png")));
            ready = ImageIO.read(Objects.requireNonNull(Cuckoo.class.getClassLoader().getResourceAsStream("images/ready.png")));

            for(int i = 0;i < 3;i++){
                bird[i] = ImageIO.read(Objects.requireNonNull(Cuckoo.class.getClassLoader().getResourceAsStream("images/blueBird_" + (i+1) + ".png")));
            }
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }

    public static ImageMgr getInstance(){
        return INSTANCE;
    }
}