ET/Unity/Assets/Scripts/Codes/Model/Share/EventDispatcher.cs

using System;
using System.Collections.Generic;

namespace ET
{
    public class EventDispatcher<A>
    {
        private Dictionary<Type, List<Action<A>>> _list = new();
        public EventDispatcher() { }

        public Action<A> AddListener<T>(Action<A> action)
        {
            List<Action<A>> acts;
            if (_list.TryGetValue(typeof(T), out acts))
            {
                acts.Add(action);
            }
            else
            {
                _list.Add(typeof(T), new List<Action<A>> { action });
            }
            return action;
        }

        public void Notfify(A ev)
        {
            List<Action<A>> acts;
            if (_list.TryGetValue(ev.GetType(), out acts))
            {
                foreach (var act in acts)
                {
                    act.Invoke(ev);
                }
            }
        }
    }
}