FiE-Game/Assets/Scripts/Fie/Manager/FieManagerBehaviour.cs

using UnityEngine;

namespace Fie.Manager {
	public class FieManagerBehaviour<T> : FieManagerBase where T : FieManagerBase {
		[SerializeField]
		private bool _isAutoStartUp;

		private static T instance;

		public static T I {
			get {
				if (instance != null && instance.isDestroyed) {
					instance = null;
				}
				if (instance == null)
				{
					instance = UnityEngine.Object.FindObjectOfType<T>();
					if (instance == null || instance.isDestroyed) {
						GameObject gameObject = new GameObject();
						UnityEngine.Object.DontDestroyOnLoad(gameObject);
						instance = gameObject.AddComponent<T>();
						gameObject.name = instance.GetType().Name;
					}
					FieManagerFactory.I.AddManager(instance);
				}
				return instance;
			}
			set {
				instance = value;
			}
		}

		private void Start() {
			if (_isAutoStartUp) {
				I.StartUp();
			}
		}
	}
}