public void Update(GameTime theGameTime)
        {
            Size.X = (int)Position.X;
            Size.Y = (int)Position.Y;

            base.Update(theGameTime, mSpeed, mDirection);

            if (Position.X + FrameSize > graphicsDevice.Viewport.Width)
            {
                Position.X = graphicsDevice.Viewport.Width - FrameSize;
                Position.Y += 50;
                if (mDirection.X == -1)
                {
                    mDirection.X = 1;
                }
                else if (mDirection.X == 1)
                {
                    mDirection.X = -1;
                }
            }

            if (Position.X < 0)
            {
                Position.X = 0;
                Position.Y += 50;
                if (mDirection.X == -1)
                {
                    mDirection.X = 1;
                }
                else if (mDirection.X == 1)
                {
                    mDirection.X = -1;
                }
            }

            if (Position.Y + Size.Height > graphicsDevice.Viewport.Height)
            {
                Position.Y = graphicsDevice.Viewport.Height - Size.Height;
            }

            if (Position.Y < 0)
            {
                Position.Y = 0;
            }


            FrameTimer += theGameTime.ElapsedGameTime;
            if (FrameTimer >= FrameLength)
            {
                FrameTimer = TimeSpan.Zero;
                FrameNum = (FrameNum + 1) % FRAME_COUNT;
            }

            if (FrameNum >= FRAME_COUNT)
                FrameNum = 0;
        }