fairy.java

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package org.wuhua.game.model;

import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;

import org.wuhua.game.util.Log;
 
/**
 * <b>类名：Sprite.java</b> </br> 
 * 编写日期: 2006-11-29 <br/>
 * 程序功能描述：建立精灵物体模型 <br/>
 * Demo: <br/>
 * Bug: <br/>
 * 
 * 程序变更日期 ：<br/> 
 * 变更作者 ：<br/> 
 * 变更说明 ：<br/>
 * 
 * @author wuhua </br> <a href="mailto:[e-mail]">[e-mail]</a>
 */
public class Fairy {
	static Log log = Log.getLog("Fairy");
    /**
     * position of Fairy in x offset 
     */
    int x; // = 0;

    /**
     * position of Fairy in y offset 
     */
    int y; // = 0;

    /**
     * width of layer 
     */
    int width; // = 0;

    /**
     * height of layer
     */
    int height; // = 0;

    /** 
     * If the Layer is visible it will be drawn when <code>paint</code>
     * is called.
     */
    boolean visible = true;
    
    /**
     * 图片资源
     *  
     */
    
    Image fairy; 
    
    public Fairy(Image fairy,int x, int y){
    	this.fairy = fairy;
		this.x = x;
        this.y = y;
	}
    
    public void setPosition(int x, int y) {
        this.x = x;
        this.y = y;
    }
    
    public void move(int dx, int dy) {	
     
        x += dx;
        y += dy;
    }
    
    public void setVisible(boolean visible) {
        this.visible = visible;
    }

   
    public final boolean isVisible() {
        return visible;
    }

	public final int getHeight() {
		return height;
	}

	public final int getWidth() {
		return width;
	}

	public final int getX() {
		return x;
	}

	public final int getY() {
		return y;
	}
    
    public void paint(Graphics g){
    	if (g == null) {
            throw new NullPointerException("Graphics 不存在");
        }
    	if(this.visible){
    		//log.debug("x=" + x + " y=" + y); 
    		g.drawImage(fairy, x, y,  Graphics.TOP | Graphics.HCENTER);
    	}
    }

    /**
     * 进行简单的碰撞算法, 希望高手可以给个建议。
     * @param f
     * @return
     */
    public final boolean collidesWith(Fairy f){
    	
     
    	if((f.getX() >= this.getX() - 20 && f.getX() <= this.getX() + 20)
    			&&  (f.getY() >= this.getY() - 10  && f.getY() <= this.getY()+10 )){
    		//log.debug("this.getY=" + this.getY());
    		//log.debug("f.getY=" + f.getY());
    		 
    		 
    		return true;
    	}
    		
    	return false;
    }
 

}