java--飞翔的小鸟

游戏玩法：通过鼠标点击使小鸟上下移动穿过柱子并完成得分，小鸟碰到柱子或掉落到地面上都会结束游戏。

游戏内图片

 Brid类：

package bird;
 
import org.omg.CORBA.IMP_LIMIT;
 
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
 
public class Brid {
    int x,y;
    int width,height;
    int size;//鸟的大小，用于检测碰撞
    BufferedImage image;
BufferedImage[] images;
int index;
 
 
    double g;   //重力加速度
    double t;   //两次位置的时间间隔
    double v0;  //初始上抛的速度
    double speed; //当前上抛的速度
    double s;     //经过时间t以后的位移
    double alpha; //鸟的倾角，单位是弧度
 
    public  Brid() throws Exception {
        image = ImageIO.read(getClass().getResource("0.png"));
        width = image.getWidth();
        height = image.getHeight();
        x = 132;
        y = 280;
        size = 40;
 
 
        g = 4;
        v0 = 20;
        t = 0.25;
        speed = v0;
        s = 0;
        alpha = 0;
        images = new BufferedImage[8];
        for (int i = 0; i < 8; i++) {
            images[i] = ImageIO.read(getClass().getResource(i + ".png"));
        }
index=0;
    }
public void  fly(){
        index++;
        image=images[(index/12)%8];
}
 
    public  void  step(){
double v0=speed;
s=v0*t+g*t*t/2;  //计算上抛运动的位移;
y=y-(int)s;//计算鸟的位置坐标
double v =v0-g*t;//计算下次的速度
speed=v;
alpha=Math.atan(s/8);
    }
public  void flappy(){
        speed=v0;   //重新设置初始速度，重新向上飞
}
   public boolean hit( Ground ground){
        boolean hit=y+size/2>ground.y;
        if(hit){
          y= ground.y-size/2;
           alpha=-3.1415926/2;
         }
        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;
    }
}

 BridGame类：

package bird;
 
import javax.imageio.ImageIO;
import javax.swing.*;
import java.awt.*;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.image.BufferedImage;
 
public class BridGame extends JPanel {
    Brid brid;
    Column column1,column2;
    Ground ground;
    BufferedImage background;
    int score;
  //  boolean gameOver;
    //游戏状态
   int state;
   public  static  final  int START=0;
    public  static  final  int RUNNING=1;
    public  static  final  int GAME_OVER=2;
    BufferedImage gameOverImage;
BufferedImage startImage;
 public BridGame() throws Exception{
     //gameOver=false;
     state=START;
 
     gameOverImage =ImageIO.read(getClass().getResource("gameover.png"));
     startImage=ImageIO.read(getClass().getResource("start.png"));
    brid=new Brid();
    column1=new Column(1);
    column2=new Column(2);
    ground=new Ground();
    background= ImageIO.read(getClass().getResource("bg.png"));
    score=0;
}
 
    @Override
    public void paint(Graphics g) {
        super.paint(g);
        g.drawImage(background,0,0,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);
        g.drawImage(ground.image,ground.x,ground.y,null);
        Graphics2D g2=(Graphics2D) g;
        g2.rotate(-brid.alpha,brid.x,brid.y);
        g.drawImage(brid.image,brid.x-brid.width/2,brid.y-brid.width/2,null);
        g2.rotate(brid.alpha,brid.x,brid.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 GAME_OVER:
                g.drawImage(gameOverImage,0,0,null);
                break;
            case START:
                g.drawImage(startImage,0,0,null);
                break;
        }
    }
    public  void action() throws  Exception{  //让地面动起来
        MouseListener l=new MouseAdapter(){
        @Override
        public void mousePressed(MouseEvent e) {  //鼠标按下
        // brid.flappy(); //鸟向上飞
            try {
                switch (state) {
                    case GAME_OVER:
                        column1 = new Column(1);
                        column2 = new Column(2);
                        brid = new Brid();
                        score = 0;
                        state = START;
                        break;
                    case START:
                        state = RUNNING;
                    case RUNNING:
                        brid.flappy();
                }
            }catch (Exception e2){
 
            }
        }
    };
        addMouseListener(l);
 
     while(true){
          switch (state){
              case START:
                  brid.fly();
                  ground.step();
                  break;
              case RUNNING:
                  ground.step();
                  column1.step();
                  column2.step();
                  brid.step();
                  brid.fly();
                  if(brid.x==column1.x||brid.x==column2.x){
                      score++;
          }
                  if(brid.hit(ground)||brid.hit(column1)||brid.hit(column2)){
                      state=GAME_OVER;
                  }
                  break;
            }
         repaint();
         Thread.sleep(1000/30);
     }
}
    public static void main(String[] args) throws  Exception {
     JFrame frame=new JFrame();
     BridGame game=new BridGame();
     frame.add(game);
     frame.setSize(440,670);
     frame.setLocationRelativeTo(null);
     frame.setVisible(true);
     frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
     game.action();
    }
}

Column类：

package bird;
 
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.font.LineMetrics;
import java.awt.image.BufferedImage;
import java.util.Random;
 
//柱子
public class Column {
    int x,y;
    int width,height;
    int gap;
    int distance;
    BufferedImage image;
    Random random=new Random();
 
    public  Column(int n) throws  Exception{
        image= ImageIO.read(getClass().getResource("column.png"));
        width=image.getWidth();
        height =image.getHeight();
        gap=144;
        distance=245;
        x=550+(n-1)*distance;
        y=random.nextInt(218)+132;
    }
public void step(){
        x--;
        if(x==-width/2){
            x=distance*2-width/2;
            y=random.nextInt(218)+132;
        }
}
}

Ground类：

package bird;
 
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
 
public class Ground {
    int x,y;
    int width,height;
    BufferedImage image;
    public Ground() throws Exception{
        image= ImageIO.read(getClass().getResource("ground.png"));
        width=image.getWidth();
        height =image.getHeight();
        x=0;
        y=500;
 
    }
    //添加方法让地面移动
    public void step(){
        x--;
        if(x==-109){
            x=0;
        }
    }
 
 
 
}