public void Update (GamePadData gamePadData, long deltaT)
    {
        frameTime += deltaT;
        if (frameTime > FRAME_DURATION) {
            frameTime = 0;

        if (pid == 1) {
            if ((gamePadData.Buttons & GamePadButtons.Left) != 0)
            {
                pos.X -= vel;
                currentDir = Direction.Left;
                activeFrame += 1;
            }
            if ((gamePadData.Buttons & GamePadButtons.Right) != 0)
            {
                pos.X += vel;
                currentDir = Direction.Right;
                activeFrame += 1;
            }
            if ((gamePadData.Buttons & GamePadButtons.Up) != 0)
            {
                pos.Y -= vel;
                currentDir = Direction.Up;
                activeFrame += 1;
            }
            if ((gamePadData.Buttons & GamePadButtons.Down) != 0)
            {
                pos.Y += vel;
                currentDir = Direction.Down;
                activeFrame += 1;
            }

        }
        if (pid == 2) {
            if ((gamePadData.Buttons & GamePadButtons.Square) != 0)
            {
                pos.X -= vel;
                currentDir = Direction.Left;
                activeFrame += 1;
            }
            if ((gamePadData.Buttons & GamePadButtons.Circle) != 0)
            {
                pos.X += vel;
                currentDir = Direction.Right;
                activeFrame += 1;
            }
            if ((gamePadData.Buttons & GamePadButtons.Triangle) != 0)
            {
                pos.Y -= vel;
                currentDir = Direction.Up;
                activeFrame += 1;
            }
            if ((gamePadData.Buttons & GamePadButtons.Cross) != 0)
            {
                pos.Y += vel;
                currentDir = Direction.Down;
                activeFrame += 1;
            }
        }

        if (activeFrame > 3)
                activeFrame = 0;

        sprite.Position = pos;

        //Keeping the sprite on screen
        Lock ();
        }
    }