bird.java

本程序是用多线程实现了打飞鸟游戏程序

/*
 * bird.java
 *
 * Created on 2001年12月27日, 上午10:28
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package shoot_birds;

import java.awt.Image;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Rectangle2D;
import java.util.Random;

import javax.swing.ImageIcon;

/**
 *
 * @author open
 */
public class bird {
    
    /** Creates a new instance of bird */
    public bird(int x,int y,int dx) {
    this.x=x;
    this.y=y;
    this.dx=dx;
     }
    public void move(Rectangle2D bounds)//鸟的移动
    {
    	
//    	当鸟的x坐标超出范围的时候设置其为离开状态
    	if(x>=bounds.getMaxX()-1)
            leave=true;
        //当鸟死亡的时候下落，考虑到有一定的惯性所以任x+=dx执行
    	if(isDead())
            y+=dy;
        x+=dx;
    }
    
    public Ellipse2D getShape()//鸟的形状椭圆代替
    {
        return new Ellipse2D.Double(x,y,30,10);
    }
    public Image getImage()
    {
    	String a = System.getProperty("user.dir");
        ImageIcon icon=new ImageIcon(a+"\\shoot_birds\\images\\4.gif");
    	return icon.getImage();
    }
    public int getImageX()
    {
    	String a = System.getProperty("user.dir");
        ImageIcon icon=new ImageIcon(a+"\\shoot_birds\\images\\4.gif");
        return icon.getIconWidth();
    }
    public int getImageY()
    {
    	String a = System.getProperty("user.dir");
        ImageIcon icon=new ImageIcon(a+"\\shoot_birds\\images\\4.gif");
        return icon.getIconHeight();
    }
    public boolean isDead() {
        return dead;
    }
    public void setDead(boolean dead) {
        this.dead = dead;
    }
    public boolean isLeave() {
        return leave;
    }
    public void setLeave(boolean leave) {
        this.leave = leave;
    }
    public int getX()//得到鸟及时位置的横坐标
    {
        return x;
    }
    public int getY()//y坐标
    {
        return y;
    }
    private int x,y;
    private int dx,dy=30;//dx,dy表示每步移动的象素
    private boolean dead=false,leave=false; //鸟的状态 dead=true表示鸟已经死亡，leave=true表示鸟已经飞走了
  }