Flappy Bird （Java实现）

Posted 2020-06-22 maxuewei2

  1 package bird;
  2 
  3 import java.awt.Graphics;
  4 import java.awt.Image;
  5 import java.awt.Toolkit;
  6 import java.awt.event.KeyAdapter;
  7 import java.awt.event.KeyEvent;
  8 import java.io.BufferedReader;
  9 import java.io.BufferedWriter;
 10 import java.io.FileNotFoundException;
 11 import java.io.FileReader;
 12 import java.io.FileWriter;
 13 import java.io.IOException;
 14 import java.util.Random;
 15 
 16 import javax.swing.JFrame;
 17 import javax.swing.JOptionPane;
 18 import javax.swing.JPanel;
 19 
 20 
 21 public class Bird  extends JPanel  {
 22     private final int WIDTH=288;
 23     private  int HEIGHT=512+112;
 24 //    Image img;
 25     private  Image bg,land,pipe_up,pipe_down,bird,score_h,score_t,score_n;
 26     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;
 27     private int a = 0, b = 0, c = 0;
 28     private int[] pipe_ys=new int[4];
 29     private  Image [] score_number=new Image[10];
 30     private Random random;
 31     Bird(){
 32         getBestScores() ;
 33         Toolkit tool = this.getToolkit();
 34         bg= tool.getImage("images/bg_day.png");
 35         land=tool.getImage("images/land.png");
 36         pipe_up= tool.getImage("images/pipe_up.png");
 37         pipe_down= tool.getImage("images/pipe_down.png");
 38         bird= tool.getImage("images/bird0_01.png");
 39         random = new Random();
 40         for(int i=0;i<=9;i++){
 41         score_number[i]= tool.getImage("images/number_score_0"+i+".png");
 42         }
 43         init();
 44         this.addKeyListener(
 45                 new KeyAdapter() {
 46             public void keyPressed(KeyEvent e) {
 47                 int c = e.getKeyCode();
 48                 //System.out.print(c);
 49                 
 50                 switch (c) {
 51                     case KeyEvent.VK_LEFT :
 52                         
 53                         break;
 54                     case KeyEvent.VK_RIGHT :
 55                         
 56                         break;
 57                     case KeyEvent.VK_UP :
 58                     System.exit(0);
 59                         break;
 60                     case KeyEvent.VK_DOWN :
 61                         
 62                         break;
 63                     case KeyEvent.VK_SPACE :
 64                         down=0;
 65                         if(time<=0)time=16;
 66                         break;
 67 
 68                     default :
 69                         // System.out.print("hey");
 70 
 71                 }
 72             }
 73         });
 74         this.setFocusable(true);
 75     }
 76     void init(){
 77         
 78         y=300;
 79         land_x=0;
 80         pipe_x=200;
 81         current_y=0;
 82         time=0;
 83         down=0;
 84         bg_x=0;
 85         t=0;
 86         score=0;
 87         yt=-1;
 88         for(int i=0;i<=3;i++){
 89             pipe_ys[i]=-1* Math.abs(random.nextInt()) % 150;
 90         }
 91     }
 92     public int get_Height(){return HEIGHT;}
 93     public int get_Width(){return WIDTH;}
 94     private  void move(){
 95         while(true){
 96             moveImg();
 97             try {
 98             Thread.sleep(10);
 99         } catch (InterruptedException e) {
100             e.printStackTrace();
101         }        
102         moveBird();
103         repaint();
104         check();
105         t++;
106         }
107     }
108     private void  moveBird(){
109         time--;
110         if(t%1==0){if(time>0){y-=4;}}
111         if(time<=-5&&y<=512-37){if(t%3==0){down+=1;y+=down;}}
112     }
113     private void moveImg(){
114         bg_x--;
115         if(bg_x<-288)bg_x+=288;
116         land_x-=1;
117         if(land_x<-20)land_x+=23;
118         pipe_x-=1;
119         if(pipe_x<=-52){
120             pipe_x+=200;
121             int ran = Math.abs(random.nextInt()) % 200;
122             ran=-ran;
123             pipe_ys[current_y]=ran;
124             current_y++;
125             current_y%=4;
126         }
127     }
128     private void check(){
129         int temp=current_y;
130         for(int i=0;i<=3;i++){
131             if(80+34>=pipe_x&&80<=pipe_x+52){
132                 if(yt!=current_y){score++;yt=current_y;}
133                 if(y<=pipe_ys[temp]+320||y+25>=pipe_ys[temp]+450){
134                     gameOver();
135                 init();
136                 }
137             }
138         }
139     }
140     private int gameOver() {
141         
142         if (score > a) {
143             c = b;
144             b = a;
145             a = score;
146             save();
147             //System.exit(0);
148         }
149         else if (score > b) {
150             c = b;
151             b = score;
152             save();
153             //System.exit(0);
154             return 0;
155         }
156         else if (score > c) {
157             c = score;
158             save();
159             //System.exit(0);
160             return 0;
161         }
162         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)",
163                 JOptionPane.PLAIN_MESSAGE);
164         //System.exit(0);
165         return 0;
166     }
167     private void getBestScores() {
168 
169         BufferedReader reader = null;
170         try {
171             reader = new BufferedReader(new FileReader("score.txt"));
172         } catch (FileNotFoundException e) {
173             e.printStackTrace();
174         }
175 
176         try {
177             a = Integer.parseInt(reader.readLine());
178             b = Integer.parseInt(reader.readLine());
179             c = Integer.parseInt(reader.readLine());
180         } catch (NumberFormatException e) {
181             e.printStackTrace();
182         } catch (IOException e) {
183             e.printStackTrace();
184         }
185         try {
186             reader.close();
187         } catch (IOException e) {
188             e.printStackTrace();
189         }
190         /*String bestS = new String("Best Score: " + new Integer(a).toString()
191                 + "   " + new Integer(b).toString() + "   "
192                 + new Integer(c).toString());*/
193         return ;
194     }
195     private int save() {
196 
197         BufferedWriter writer = null;
198         try {
199             writer = new BufferedWriter(new FileWriter("score.txt"));
200         } catch (IOException e) {
201             e.printStackTrace();
202         }
203         String d = new Integer(a).toString(), e = new Integer(b).toString(),
204                 f = new Integer(c).toString();
205         try {
206             writer.write(d);
207             writer.newLine();
208             writer.write(e);
209             writer.newLine();
210             writer.write(f);
211             writer.flush();
212             writer.close();
213         } catch (NumberFormatException ev) {
214             ev.printStackTrace();
215         } catch (IOException ev) {
216             ev.printStackTrace();
217         }
218         return 0;
219     }
220     private void showScore(Graphics g){
221         int score_h=score/100,score_t=score%100/10,score_n=score%10;
222         if(score_h!=0){g.drawImage(score_number[score_h], 80,20,this);}
223         g.drawImage(score_number[score_t], 80+20,20,this);
224         g.drawImage(score_number[score_n], 80+20+20,20,this);
225     }
226     public void paint(Graphics g) {//Component
227         super.paintComponent(g);
228         //g.drawLine(x,y,200,200);
229         g.drawImage(bg, bg_x,0,this);
230         g.drawImage(bg, bg_x+288,0,this);
231         //g.drawImage(land_1, landx_1, HEIGHT-land_1.getHeight(this), WIDTH,WIDTH*land_1.getHeight(this)/land_1.getWidth(this), this);
232         
233         int temp=current_y;
234         for(int i=0;i<=3;i++){
235         g.drawImage(pipe_down,pipe_x+i*200,pipe_ys[temp],this);
236         g.drawImage(pipe_up,pipe_x+i*200,pipe_ys[temp]+450,this);
237         g.drawImage(bird,80,y,this);
238         temp++;
239         temp%=4;
240         }
241         g.drawImage(land, land_x,512,this);
242         showScore(g);
243     }
244     public static void main(String[] args) {
245         JFrame frame = new JFrame("（按UP键退出）");
246         Bird b=new Bird();
247         frame.getContentPane()
248                 .add(b);
249         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
250         frame.setSize(b.get_Width(),b.get_Height());
251         frame.setLocation(200, 100);
252         frame.setVisible(true);
253         b.move();
254     }
255 
256 }

 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)