unity向右和向左滑动错误

using UnityEngine;

public class SwipeDetection : MonoBehaviour
{
    private Vector2 touchStartPos;
    private bool isSwiping = false;

    void Update()
    {
        if (Input.touchCount > 0)
        {
            Touch touch = Input.GetTouch(0);

            switch (touch.phase)
            {
                case TouchPhase.Began:
                    touchStartPos = touch.position;
                    isSwiping = true;
                    break;

                case TouchPhase.Moved:
                    if (isSwiping)
                    {
                        Vector2 touchEndPos = touch.position;
                        float deltaX = touchEndPos.x - touchStartPos.x;

                        if (Mathf.Abs(deltaX) > Mathf.Abs(touchEndPos.y - touchStartPos.y)) // Horizontal swipe
                        {
                            if (deltaX > 0)
                            {
                                Debug.Log("Swipe Right");
                            }
                            else
                            {
                                Debug.Log("Swipe Left");
                            }
                        }

                        isSwiping = false; // Reset swipe flag after detecting a swipe
                    }
                    break;

                case TouchPhase.Ended:
                case TouchPhase.Canceled:
                    isSwiping = false;
                    break;
            }
        }
    }
}