private string picture = "";//正常情況照片是object,目前用string是為了展示

        public Hero(string name, float x, float y, int pictureType)
        {
            this.name    = name;
            this.x       = x;
            this.y       = y;
            this.picture = PictureFactory.getPicture(pictureType);//使用照片工廠
        }
 public void setPicture(int pictureType)
 {
     this.picture = PictureFactory.getPicture(pictureType);
 }