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基于EventQueue和观察者模式，实现一个轻量级的EventManger
基于EventQueue和观察者模式，实现了一个轻量级的EventManger事件管理，消息分发器
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‎Assets/Game Programming Patterns/Event Queue Pattern/Example3/EventManger.cs‎

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//-------------------------------------------------------------------------------------
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// EventManger.cs
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//-------------------------------------------------------------------------------------
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using UnityEngine;
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using System.Collections;
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using System.Collections.Generic;
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namespace EventQueuePatternExample3
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{
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/// <summary>
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/// 消息管理类-单例
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/// </summary>
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public class EventManger
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{
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private static EventManger _Instance;
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public static EventManger Instance
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{
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get
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{
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if (_Instance == null)
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{
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_Instance = new EventManger();
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}
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return _Instance;
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}
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}
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public delegate void EventHandler(BaseEventMsg Msg);
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// 消息ID,代理存储字典Map - <(int)EventType,EventHandler代理>
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private Dictionary<int, EventHandler> m_EventHandlerMap = new Dictionary<int, EventHandler>();
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/// <summary>
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/// 注册事件
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/// </summary>
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public void RegisterEvent(EventType eventType, EventHandler eventHandler)
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{
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if (m_EventHandlerMap == null)
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{
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m_EventHandlerMap = new Dictionary<int, EventHandler>();
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}
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int eventTypeID = (int)eventType;
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if (m_EventHandlerMap.ContainsKey(eventTypeID))
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{
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m_EventHandlerMap[eventTypeID] += eventHandler;
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}
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else
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{
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m_EventHandlerMap.Add(eventTypeID, eventHandler);
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}
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}
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/// <summary>
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/// 反注册事件-反注册该EventType下所有的注册消息
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/// </summary>
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public void UnRegisterEvent(EventType eventType)
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{
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int eventTypeID = (int)eventType;
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if (m_EventHandlerMap == null)
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{
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return;
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}
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if (m_EventHandlerMap.ContainsKey(eventTypeID))
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{
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m_EventHandlerMap.Remove(eventTypeID);
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}
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}
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/// <summary>
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/// 反注册事件-反注册该EventType下所有的注册消息
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/// </summary>
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public void UnRegisterEvent(EventType eventType, EventHandler eventHandler)
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{
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int eventTypeID = (int)eventType;
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if (m_EventHandlerMap == null)
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{
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return;
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}
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//删除eventHandler指定的消息响应
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if (m_EventHandlerMap.ContainsKey(eventTypeID))
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{
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m_EventHandlerMap[eventTypeID] -= eventHandler;
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}
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}
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/// <summary>
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/// 从消息ID,代理存储字典Map中找到对应的消息ID绑定的事件消息
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/// </summary>
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public void SendEvent(EventType eventType, BaseEventMsg Msg)
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{
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int eventTypeID = (int)eventType;
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if (m_EventHandlerMap == null)
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{
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return;
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}
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if (m_EventHandlerMap.ContainsKey(eventTypeID))
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{
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if (m_EventHandlerMap[eventTypeID] != null)
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{
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m_EventHandlerMap[eventTypeID](Msg);
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}
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}
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}
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/// <summary>
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/// 发送事件
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/// </summary>
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public void SendEvent(EventType eventType, params object[] inParams)
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{
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BaseEventMsg Msg = new BaseEventMsg();
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if (Msg != null)
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{
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Msg.SetEventMsg(eventType, inParams);
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SendEvent(eventType, Msg);
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}
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}
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}
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/// <summary>
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/// 消息内容
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/// </summary>
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public class BaseEventMsg
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{
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public EventType MsgType;
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public object[] Params = null;
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public BaseEventMsg()
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{
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}
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public BaseEventMsg(EventType inMsgType, params object[] InParams)
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{
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MsgType = inMsgType;
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Params = InParams;
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}
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public void SetEventMsg(EventType inMsgType, params object[] InParams)
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{
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MsgType = inMsgType;
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Params = InParams;
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}
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}
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}

‎Assets/Game Programming Patterns/Event Queue Pattern/Example3/EventManger.cs.meta‎

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