Flappy Bird （Java实现）

运行效果：

代码：

package bird;

import java.awt.Graphics;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Random;

import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;


public class Bird  extends JPanel  {
    private final int WIDTH=288;
    private  int HEIGHT=512+112;
//    Image img;
    private  Image bg,land,pipe_up,pipe_down,bird,score_h,score_t,score_n;
    private  int y=300,land_x=0,pipe_x=200,current_y=0,time=0,down=0,bg_x=0,t=0,score=0,yt=-1;
    private int a = 0, b = 0, c = 0;
    private int[] pipe_ys=new int[4];
    private  Image [] score_number=new Image[10];
    private Random random;
    Bird(){
        getBestScores() ;
        Toolkit tool = this.getToolkit();
        bg= tool.getImage("images/bg_day.png");
        land=tool.getImage("images/land.png");
        pipe_up= tool.getImage("images/pipe_up.png");
        pipe_down= tool.getImage("images/pipe_down.png");
        bird= tool.getImage("images/bird0_01.png");
        random = new Random();
        for(int i=0;i<=9;i++){
        score_number[i]= tool.getImage("images/number_score_0"+i+".png");
        }
        init();
        this.addKeyListener(
                new KeyAdapter() {
            public void keyPressed(KeyEvent e) {
                int c = e.getKeyCode();
                //System.out.print(c);
                
                switch (c) {
                    case KeyEvent.VK_LEFT :
                        
                        break;
                    case KeyEvent.VK_RIGHT :
                        
                        break;
                    case KeyEvent.VK_UP :
                    System.exit(0);
                        break;
                    case KeyEvent.VK_DOWN :
                        
                        break;
                    case KeyEvent.VK_SPACE :
                        down=0;
                        if(time<=0)time=16;
                        break;

                    default :
                        // System.out.print("hey");

                }
            }
        });
        this.setFocusable(true);
    }
    void init(){
        
        y=300;
        land_x=0;
        pipe_x=200;
        current_y=0;
        time=0;
        down=0;
        bg_x=0;
        t=0;
        score=0;
        yt=-1;
        for(int i=0;i<=3;i++){
            pipe_ys[i]=-1* Math.abs(random.nextInt()) % 150;
        }
    }
    public int get_Height(){return HEIGHT;}
    public int get_Width(){return WIDTH;}
    private  void move(){
        while(true){
            moveImg();
            try {
            Thread.sleep(10);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }        
        moveBird();
        repaint();
        check();
        t++;
        }
    }
    private void  moveBird(){
        time--;
        if(t%1==0){if(time>0){y-=4;}}
        if(time<=-5&&y<=512-37){if(t%3==0){down+=1;y+=down;}}
    }
    private void moveImg(){
        bg_x--;
        if(bg_x<-288)bg_x+=288;
        land_x-=1;
        if(land_x<-20)land_x+=23;
        pipe_x-=1;
        if(pipe_x<=-52){
            pipe_x+=200;
            int ran = Math.abs(random.nextInt()) % 200;
            ran=-ran;
            pipe_ys[current_y]=ran;
            current_y++;
            current_y%=4;
        }
    }
    private void check(){
        int temp=current_y;
        for(int i=0;i<=3;i++){
            if(80+34>=pipe_x&&80<=pipe_x+52){
                if(yt!=current_y){score++;yt=current_y;}
                if(y<=pipe_ys[temp]+320||y+25>=pipe_ys[temp]+450){
                    gameOver();
                init();
                }
            }
        }
    }
    private int gameOver() {
        
        if (score > a) {
            c = b;
            b = a;
            a = score;
            save();
            //System.exit(0);
        }
        else if (score > b) {
            c = b;
            b = score;
            save();
            //System.exit(0);
            return 0;
        }
        else if (score > c) {
            c = score;
            save();
            //System.exit(0);
            return 0;
        }
        JOptionPane.showMessageDialog(null, "GAME OVER!\n\nBEST SCORE:\n"+a+"\n"+b+"\n"+c, "你死了(按任意键再来一次)",
                JOptionPane.PLAIN_MESSAGE);
        //System.exit(0);
        return 0;
    }
    private void getBestScores() {

        BufferedReader reader = null;
        try {
            reader = new BufferedReader(new FileReader("score.txt"));
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }

        try {
            a = Integer.parseInt(reader.readLine());
            b = Integer.parseInt(reader.readLine());
            c = Integer.parseInt(reader.readLine());
        } catch (NumberFormatException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        try {
            reader.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        /*String bestS = new String("Best Score: " + new Integer(a).toString()
                + "   " + new Integer(b).toString() + "   "
                + new Integer(c).toString());*/
        return ;
    }
    private int save() {

        BufferedWriter writer = null;
        try {
            writer = new BufferedWriter(new FileWriter("score.txt"));
        } catch (IOException e) {
            e.printStackTrace();
        }
        String d = new Integer(a).toString(), e = new Integer(b).toString(),
                f = new Integer(c).toString();
        try {
            writer.write(d);
            writer.newLine();
            writer.write(e);
            writer.newLine();
            writer.write(f);
            writer.flush();
            writer.close();
        } catch (NumberFormatException ev) {
            ev.printStackTrace();
        } catch (IOException ev) {
            ev.printStackTrace();
        }
        return 0;
    }
    private void showScore(Graphics g){
        int score_h=score/100,score_t=score%100/10,score_n=score%10;
        if(score_h!=0){g.drawImage(score_number[score_h], 80,20,this);}
        g.drawImage(score_number[score_t], 80+20,20,this);
        g.drawImage(score_number[score_n], 80+20+20,20,this);
    }
    public void paint(Graphics g) {//Component
        super.paintComponent(g);
        //g.drawLine(x,y,200,200);
        g.drawImage(bg, bg_x,0,this);
        g.drawImage(bg, bg_x+288,0,this);
        //g.drawImage(land_1, landx_1, HEIGHT-land_1.getHeight(this), WIDTH,WIDTH*land_1.getHeight(this)/land_1.getWidth(this), this);
        
        int temp=current_y;
        for(int i=0;i<=3;i++){
        g.drawImage(pipe_down,pipe_x+i*200,pipe_ys[temp],this);
        g.drawImage(pipe_up,pipe_x+i*200,pipe_ys[temp]+450,this);
        g.drawImage(bird,80,y,this);
        temp++;
        temp%=4;
        }
        g.drawImage(land, land_x,512,this);
        showScore(g);
    }
    public static void main(String[] args) {
        JFrame frame = new JFrame("（按UP键退出）");
        Bird b=new Bird();
        frame.getContentPane()
                .add(b);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(b.get_Width(),b.get_Height());
        frame.setLocation(200, 100);
        frame.setVisible(true);
        b.move();
    }

}

素材：

 bg_day.png

bird0_01.png

land.png

pipe_up.png

pipe_down.png

number_score_00.png~number_score_09.png    (数字均为白色，图片背景为透明。为能够在博客中显示出来，特设置为灰色背景)

程序写于大三上学期。

2016.4.12更新博客。

 END