JAVA小游戏“飞翔的小鸟”

第一步是创建项目项目名自拟

第二步创建个包名来规范class

再创建一个包来存储照片

如下：

代码如下：

package game;
import java.awt.*;
import javax.swing.*;
import javax.imageio.ImageIO;

public class Bird {

   Image image;
   int x,y;
   int width,height;
   int size;

   double g;

   double t;

   double v0;

   double speed;

   double s;

   double alpha;

   //֡
   Image[] images;

   int index;

   public Bird() throws Exception
   {
       image=new ImageIcon("source/0.png").getImage();
       width = image.getWidth(null);
       height = image.getHeight(null);
       x=132;
       y=280;
       size=40;

       g=4;
       v0=20;
       t=0.25;
       speed=v0;
       s=0;

       alpha=0;


       images=new Image[8];

       for(int i=0;i<8;i++)
       {
           images[i]=new ImageIcon("source/"+i+".png").getImage();
       }
       index=0;

   }


   public void fly()
   {
       index++;
       image=images[(index/12)%8];
   }


   public void step()
   {
       double v0=speed;

       s=v0*t+g*t*t/2;

       y=y-(int)s;

       double v=v0-g*t;
       speed =v;

       alpha=Math.atan(s/8);

   }


   public void flappy()
   {

       speed=v0;
   }


   public boolean hit(Ground ground)
   {
       boolean hit =y+size/2>ground.y;
       if(hit)
       {
           y=ground.y-size/2;
           alpha=Math.PI/2;
       }
       return hit;
   }


   public boolean hit(Column column)
   {

       if(x>column.x-column.width/2-size/2&&x<column.x+column.width/2+size/2)
       {
           if(y>column.y-column.gap/2+size/2&&y<column.y+column.gap/2-size/2) return false;
           return true;
       }
       return false;
   }
}

package game;

import javax.imageio.ImageIO;
import java.util.*;

import javax.swing.*;

import java.awt.Graphics;
import java.awt.event.MouseAdapter;
import java.awt.event.*;
import java.awt.image.BufferedImage;
import javax.imageio.*;
import java.awt.*;

public class BirdGame extends JPanel {


   Image background;
   Image startImage;
   Image overImage;
   Ground ground;//��
   Column column1,column2;
   Bird bird;
   int score;
   int state;//״̬
   //״̬��
   public static final int START=0;
   public static final int RUNNING=1;
   public static final int GAME_OVER=2;

   public BirdGame() throws Exception
   {
       background = new ImageIcon("./source/bg.png").getImage();
       startImage = new ImageIcon("./source/start.png").getImage();
       overImage=new ImageIcon("./source/gameover.png").getImage();
   //״̬
       ground=new Ground();
       column1=new Column(1);
       column2=new Column(2);
       bird=new Bird();
       score=0;
       state=0;
   }

   public void paint(Graphics g)
   {

       g.drawImage(background, 0, 0,null);

       g.drawImage(ground.image, ground.x, ground.y, null);

       g.drawImage(column1.image,column1.x-column1.width/2,column1.y-column1.height/2,null);
       g.drawImage(column2.image,column2.x-column2.width/2,column2.y-column2.height/2,null);

       Graphics2D g2=(Graphics2D) g;
       g2.rotate(-bird.alpha,bird.x,bird.y);
       g.drawImage(bird.image,bird.x-bird.width/2,bird.y-bird.height/2,null);
       g2.rotate(bird.alpha,bird.x,bird.y);

       Font f=new Font(Font.SANS_SERIF,Font.BOLD,40);
       g.setFont(f);
       g.drawString(""+score, 40, 60);
       g.setColor(Color.WHITE);
       g.drawString(""+score,40-3, 60-3);

       switch(state)
       {
       case START:
           g.drawImage(startImage, 0, 0, null);
           break;
       case GAME_OVER:
           g.drawImage(overImage, 0, 0, null);
           break;
       }
   }

   public void action() throws Exception
   {

       MouseListener l=new MouseAdapter()
       {
           public void mousePressed(MouseEvent e)
           {
               try {
                   switch(state) {
                   case START:
                       //״̬
                       state=RUNNING;
                       break;
                   case RUNNING:

                       bird.flappy();
                       break;
                   case GAME_OVER:

                       column1=new Column(1);
                       column2=new Column(2);
                       bird=new Bird();
                       score=0;
                       state=START;
                       break;
                   }
               }
               catch (Exception ex)
               {
                   ex.printStackTrace();
               }
           }

       };
       addMouseListener(l);
       while(true)
       {
           switch(state)
           {
           case START:
               bird.fly();
               ground.step();
               break;
           case RUNNING:
               ground.step();
               column1.step();
               column2.step();
               bird.fly();
               bird.step();

               score++;
               //
               if(bird.hit(ground)||bird.hit(column1)||bird.hit(column2))
               {
                   state=GAME_OVER;
               }
               break;
           }

           Thread.sleep(1000/60);
           repaint();
       }
   }



   public static void main(String[] args) throws Exception
   {

       JFrame frame=new JFrame();
       BirdGame game=new BirdGame();
       frame.add(game);
       frame.setSize(440,670);
       frame.setLocationRelativeTo(null);
       frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
       frame.setVisible(true);
       game.action();
   }

}

package game;

import java.util.*;
import java.awt.*;

import javax.imageio.ImageIO;
import javax.swing.*;

public class Column {

   Image image;

   int x,y;
   int width,height;

   int gap;

   int distance;
   Random random =new Random();



   public Column(int n) throws Exception
   {
       image=new ImageIcon("source/column.png").getImage();
       width=image.getWidth(null);
       height=image.getHeight(null);
       gap=144;
       distance=245;
       x=550+(n-1)*distance;
       y=random.nextInt(218)+132;
   }

   public void step()
   {
       x-=4;
       if(x<= -width/2)
       {
           x=distance*2-width/2;
           y=random.nextInt(218);
       }
   }
}

package game;

import javax.swing.*;
import java.awt.*;

public class Ground {

   Image image;

   int x,y;

   int width,height;


   public Ground() throws Exception
   {
       image =new ImageIcon("source/ground.png").getImage();
       width=image.getWidth(null);
       height=image.getHeight(null);
       x=0;
       y=500;
   }


   public void step()
   {
       x-=4;
       if(x<=-109)
       {
           x=0;
       }
   }


}