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