List<Animation> storeAnimation;
public void Awake()
 {
      storeAnimation = new List<Animation>();
      storeAnimation.Clear();
 } 
private void Update()
{
 　　　　//1. 獲取鼠標點擊位置
        //創建射線;從攝像機發射一條經過鼠標當前位置的射線
     　　Ray ray = firstCamera.ScreenPointToRay(Input.mousePosition);
        
 
//發射射線
        RaycastHit hitInfo = new RaycastHit();
         if (Physics.Raycast(ray, out hitInfo))
         {

            if (hitInfo.collider.name == "plantLeftDoor01" || hitInfo.collider.name == "plantLeftDoor02" || hitInfo.collider.name == "plantLeftDoor03" || hitInfo.collider.name == "plantLeftDoor04
 
" || hitInfo.collider.name == "plantLeftDoor05" || hitInfo.collider.name == "plantLeftDoor06" || hitInfo.collider.name == "plantLeftDoor07" || hitInfo.collider.name == "plantLeftDoor08")
            {
                 OpenOrCloseLeftDoor(hitInfo);

            }
            else if (hitInfo.collider.name == "
 
plantRightDoor01" || hitInfo.collider.name == "plantRightDoor02" || hitInfo.collider.name == "plantRightDoor03" || hitInfo.collider.name == "plantRightDoor04" || hitInfo.collider.name == "plantRightDoor05" || hitInfo.collider.name == "plantRightDoor06" || hitInfo.collider.name == "plantRightDoor07" || hitInfo.collider.name == "plantRightDoor08")
            {
                OpenOrCloseRightDoor(hitInfo);
            }
       }
}
private void OpenOrCloseLeftDoor(RaycastHit hitInfo)
    {
        leftAnim = hitInfo.collider.transform.GetComponent<Animation>();
        if (!storeAnimation.Contains(leftAnim))//說明第一次點擊
        {
            leftAnim["leftDoor"].speed = 1;
            leftAnim.Play("leftDoor");
            storeAnimation.Add(leftAnim);
        }
        else
        {
            leftAnim["leftDoor"].time = leftAnim["leftDoor"].length;
            leftAnim["leftDoor"].speed = -1;
            leftAnim.Play("leftDoor");
            storeAnimation.Remove(leftAnim);
        }
    }

    private void OpenOrCloseRightDoor(RaycastHit hitInfo)
    {
        rightAnim = hitInfo.collider.transform.GetComponent<Animation>();
        if (!storeAnimation.Contains(rightAnim))//說明第一次點擊
        {
            rightAnim["rightDoor"].speed = 1;
            rightAnim.Play("rightDoor");
            storeAnimation.Add(rightAnim);
        }
        else
        {
            rightAnim["rightDoor"].time = rightAnim["rightDoor"].length;
            rightAnim["rightDoor"].speed = -1;
            rightAnim.Play("rightDoor");
            storeAnimation.Remove(rightAnim);
        }
    }

unity中多個門的開關動畫保持獨立性