State/Runtime/Enable/StateEnableMonoBehaviour.cs

using System;
using UnityEngine;

namespace Syntriax.Modules.State
{
    public class StateEnableMonoBehaviour : MonoBehaviour, IStateEnable
    {
        private bool _isEnabled = true;
        public bool IsEnabled
        {
            get => _isEnabled;
            set
            {
                if (value == _isEnabled)
                    return;

                _isEnabled = value;
                OnEnabledChanged?.Invoke(value);
            }
        }

        public Action<bool> OnEnabledChanged { get; set; } = null;

        protected void Awake()
            => OnEnabledChanged += (state) => enabled = state;

        protected void OnEnable() => IsEnabled = true;
        protected void OnDisable()
        {
            IsEnabled = false;

            if (!gameObject.activeInHierarchy) // Just so we can get OnEnable called when the object is back active again in the hierarchy  
                this.enabled = true;
        }
    }
}