2d 跟随鼠标移动

 //2d 物体跟随鼠标移动
        //targetPos =Camera.main. ScreenToWorldPoint(new Vector3(Input.mousePosition.x, Input.mousePosition.y, 10f));
        //_bullet.transform.position= Vector3.MoveTowards(_bullet.transform.position, targetPos, 2 * Time.deltaTime);