相机移动时如何使内部操纵杆留在屏幕上？

Question

我第一次开发手机游戏，以及它的 2D 自上而下的射击游戏。 我遇到了一个问题，即当相机移动以跟随玩家时，操纵杆的中间部分会落在后面。 相机静止时一切正常，但我真的不知道如何让中央操纵杆在相机移动时保持在正确的 position 中。 我真的很感激有关如何做到这一点的建议，但我宁愿自己编写代码以进行自我改进。

（我知道代码很乱，对不起）

   void Update()
    {
        touchNum = Input.touchCount;
        if (touchNum > 0)
        {

            for (int i = 0; i <= (touchNum - 1); i++)
            {
                touch = Input.GetTouch(i);
                touchPosition1 = Camera.main.ScreenToWorldPoint(touch.position);
                if (area.OverlapPoint(touchPosition1))
                {
                    switch (touch.phase)
                    {
                        case TouchPhase.Began:
                            startPos = touchPosition1;
                            joyBack.transform.position = startPos;
                            joyFront.transform.position = startPos;
                            joyBack.SetActive(true);
                            joyFront.SetActive(true);
                            joyFront.transform.position = startPos;
                            joyBack.transform.position = startPos;
                            Debug.Log("begun");
                            break;

                        case TouchPhase.Moved:
                            direction = touchPosition1 - startPos;
                            Vector2 touchPosition2 = Vector2.ClampMagnitude(direction, 1.75f);
                            horizontal = touchPosition2.x;
                            vertical = touchPosition2.y;
                            //Debug.Log(horizontal);
                            distance = horizontal * horizontal + vertical * vertical;
                            distance = Mathf.Sqrt(distance);
                            direction = direction / distance;
                            direction = Limiters(direction, limit);
                            joyFront.transform.position =new Vector2(startPos.x + touchPosition2.x, startPos.y + touchPosition2.y);
                            Debug.DrawLine(startPos, startPos + touchPosition2);
                            Debug.Log(direction);
                            break;

                        case TouchPhase.Ended:
                            distance = 0;
                            Debug.Log("Ended");
                            joyBack.SetActive(false);
                            joyFront.SetActive(false);
                            break;

                    }
                }
                else
                {
                    joyBack.SetActive(false);
                    joyFront.SetActive(false);
                    distance = 0;
                }

            }
        }
    }
    private static Vector2 Limiters(Vector2 direction, float limit)
    {
        if (direction.x > limit)
        {
            direction.x = limit;
        }
        else if (direction.x < -limit)
        {
            direction.x = -limit;
        }
        if (direction.y > limit)
        {
            direction.y = limit;
        }
        else if (direction.y < -limit)
        {
            direction.y = -limit;
        }
        return direction;
    }
    private void FixedUpdate()
    {
        move.Translate((direction) * movespeed * distance * Time.fixedDeltaTime);

    }
}