Unity简易事件分发器

一、EventFunction

using System;
namespace EventCore
{public struct EventFunction{public object _caller;public Action _action;}public struct EventFunction<T>{public object _caller;public Action<T> _action;}
}

二、Event<T>

using System;
using System.Collections.Generic;
using UnityEngine;namespace EventCore
{public class Event<T>{private readonly List<EventFunction<T>> _event = new List<EventFunction<T>>();public void AddListener(object caller, Action<T> action){if (action != null){for (int index = 0, max = _event.Count; index < max; index++){var element = _event[index];if (element._caller == caller && element._action == action){Debug.LogError("EventGeneric,重复添加事件:" + element._caller + "," + element._action.Method);return;}}}_event.Add(new EventFunction<T> { _caller = caller, _action = action });}public void RemoveListener(object caller, Action<T> action){for (int index = _event.Count - 1; index >= 0; index--){var element = _event[index];if (element._caller == caller && element._action == action){_event.RemoveAt(index);return;}}}public void Trigger(T data){for (int index = _event.Count - 1; index >= 0; index--){var element = _event[index];if (element._action != null){element._action(data);}else{Debug.LogError("EventGeneric: event removed");}}}}
}

三、Event

using System;
using System.Collections.Generic;
using UnityEngine;namespace EventCore
{public class Event{private readonly List<EventFunction> _event = new List<EventFunction>();public void AddListener(object caller, Action action){if (action != null){for (int index = 0, max = _event.Count; index < max; index++){var element = _event[index];if (element._caller == caller && element._action == action){Debug.LogError("EventGeneric,重复添加事件:" + element._caller + "," + element._action.Method);return;}}}_event.Add(new EventFunction { _caller = caller, _action = action });}public void RemoveListener(object caller, Action action){for (int index = _event.Count - 1; index >= 0; index--){var element = _event[index];if (element._caller == caller && element._action == action){_event.RemoveAt(index);return;}}}public void Trigger(){for (int index = _event.Count - 1; index >= 0; index--){var element = _event[index];if (element._action != null){element._action();}else{Debug.LogError("EventGeneric: event removed");}}}}
}

四、使用分发器

事件定义：

using EventCore;public class TestEvent
{public static Event<int> TestEvent1 = new Event<int>(); // 事件测试public static Event TestEvent2 = new Event(); // 事件测试
}

事件注册、事件注销：

TestEvent.TestEvent2.AddListener(this, OnTestEvent);
TestEvent.TestEvent2.RemoveListener(this, OnTestEvent);private void OnTestEvent()
{}

事件触发：

TestEvent.TestEvent2.Trigger();