如何防止在Unity中运行游戏时禁用游戏对象？

using UnityEngine;

public class KeepActive : MonoBehaviour
{
    void Update()
    {
        if (!isActiveAndEnabled)
        {
            enabled = true;
            gameObject.SetActive(true);
        }
    }
}

using UnityEngine;

public class KeepActiveOnEvent : MonoBehaviour
{
    void OnEnable()
    {
        // 假设有一个事件会在某些情况下禁用游戏对象
        EventManager.OnDisableGameObject += Reactivate;
    }

    void OnDisable()
    {
        EventManager.OnDisableGameObject -= Reactivate;
    }

    private void Reactivate(GameObject obj)
    {
        if (obj == gameObject)
        {
            gameObject.SetActive(true);
        }
    }
}

public class Singleton<T> : MonoBehaviour where T : MonoBehaviour
{
    private static T instance;

    public static T Instance
    {
        get
        {
            if (instance == null)
            {
                instance = FindObjectOfType<T>();
                if (instance == null)
                {
                    GameObject obj = new GameObject();
                    instance = obj.AddComponent<T>();
                }
            }
            return instance;
        }
    }

    protected virtual void Awake()
    {
        if (instance == null)
        {
            instance = this as T;
        }
        else if (instance != this)
        {
            Destroy(gameObject);
        }
    }
}