如果由于某种原因，声明未得到履行

我正试图让一张卡在点击时旋转180度，可以面朝上，也可以面朝下。我用的是Unity，C#。这是附在卡片上的类的代码：

using UnityEngine;
using System.Collections;
public class CardScript : MonoBehaviour {
    public float rotSpeed = 900;
    public MatchScript referenceEasy;
    private bool rotating = false;
    private bool faceUp = false;
    private bool finishedRotating = true;
    private int boardPosX, boardPosY;
    // Use this for initialization
    void Start () {
        transform.localScale -= new Vector3(.6f, .6f, 0);
        transform.localEulerAngles = new Vector3(0f, 180f, 0f);
    }
    // Update is called once per frame
    void Update()
    {
        Rotate();
    }
    void Rotate()
    {
        if (rotating && transform.eulerAngles.y >= 180 && !faceUp)
        {
            Debug.Log("ding");
            transform.Rotate(Vector3.up * (rotSpeed * Time.deltaTime));
        }
        else if (rotating && transform.eulerAngles.y <= 180 && faceUp)
        {
            Debug.Log("ding");
            transform.Rotate(Vector3.down * (rotSpeed * Time.deltaTime));
        }
        else if (rotating)
        {
            faceUp = !faceUp;
            rotating = false;
        }
    }
    void OnMouseDown()
    {
        referenceEasy.Clicked(boardPosX, boardPosY);
        if(!rotating)
        {
            rotating = true;
            faceUp = !faceUp;
            Debug.Log(rotating);
            Debug.Log(eulerAngles.y);
            Debug.Log(faceUp);
        }
    }
    public void SetReference(MatchScript m) //When a card object is instantiated by the board, it will call this function, which associates the reference
    {
        referenceEasy = m;
    }
    public void SetBoardPosition (int x, int y) //This gets called to set where in the matrix the card exists.  It's mainly as a reference for the board.  
    {
        boardPosX = x;
        boardPosY = y;
    }
}

单击时，调试日志告诉我faceUp和rotating都是真的，并且eulerAngles（在本例中，旋转）=180。然而，Rotate（）中的"ding"都不是触发的，但我认为我满足了要求。谢谢你的帮助！