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）
下面是实现这个游戏的代码：
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; } } }
