balloon.java

英语背单词联网版本

/*
 * Balloon.java
 *
 * Created on 2003年11月18日, 下午4:02
 */

package handenglish;

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

/**
 *
 * @author  com
 * @version
 */
public class Balloon {
    public final int MOVESTEP=3;
    public final int BLACK=00000000;
    public int tagx,tagy;
    private int color;
    public Balloon(int x,int y,int c){
        tagx=x;
        tagy=y;
        color=c;
    }
    /**
     *画气球
     */
    public void draw(Graphics g,Image airBalloon,Image blast,char letter,int m){
        if(m==0){
            g.setClip(tagx,tagy,18,45);
            g.drawImage(airBalloon,tagx-18*color,tagy,g.TOP|g.LEFT);
            g.setColor(BLACK);
            g.drawChar(letter,tagx+5,tagy,g.TOP|g.LEFT);
        }
        else if(m>=1&&m<=3){
            g.setClip(tagx-14,tagy-10,46,43);
            g.drawImage(blast,tagx-14-(m-1)*46,tagy-10,g.TOP|g.LEFT);
        }
    }
    /**
     *判断气球是不是到终点了
     */
    public boolean move(){
        if(tagy+MOVESTEP<=128){
            tagy=tagy+MOVESTEP;
            return true;
        }
        else{
            tagy=-27;
            return false;
        }
    }
}