Unity 广播与监听
编辑
97
2021-12-27
Unity 广播与监听
用事件广播监听的话可以做到每个类关联性不那么强 各做各的职责 监听者不用管广播者是谁 广播者不用管监听者是谁
EventType脚本
脚本中存储需要用到的枚举类型
public enum eNventType
{
ShowText=0,
}
EventCenter脚本
用作事件管理 添加监听移除监听和广播的方法
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System;
/// <summary>
/// 事件管理
/// </summary>
public class EventCenter
{
static Dictionary<eNventType, Delegate> m_EventTable = new Dictionary<eNventType, Delegate>();
static void OnListenerAdding(eNventType eventType, Delegate callBack)
{
if (!m_EventTable.ContainsKey(eventType))
{
m_EventTable.Add(eventType, null);
}
Delegate d = m_EventTable[eventType];
if (d != null && d.GetType() != callBack.GetType())
{
throw new Exception(string.Format("尝试为事件{0}添加不同类型的委托,当前事件对应的的委托是{1},要添加的委托类型是{2}", eventType, d.GetType(),
callBack));
}
}
static void OnListenerRemoving(eNventType eventType, Delegate callBack)
{
if (m_EventTable.ContainsKey(eventType))
{
Delegate d = m_EventTable[eventType];
if (d == null)
{
throw new Exception(string.Format("移除监听错误:事件{0}没有对应的委托", eventType));
}
else if (d.GetType() != callBack.GetType())
{
throw new Exception(string.Format("移除监听错误:尝试为事件{0}移除不同类型的委托,当前委托类型为{1}" +
",要移除的委托的类型为{2}", eventType, d.GetType(), callBack.GetType()));
}
}
else
{
throw new Exception(string.Format("移除监听错误:没有事件码{0}", eventType));
}
}
static void OnListenerRemoved(eNventType eventType)
{
if (m_EventTable[eventType] == null)
{
m_EventTable.Remove(eventType);
}
}
/// <summary>
/// 无参添加监听的方法
/// </summary>
/// <param name="eventType"></param>
/// <param name="callBack"></param>
public static void AddListener(eNventType eventType, CallBack callBack)
{
OnListenerAdding(eventType, callBack);
m_EventTable[eventType] = (CallBack) m_EventTable[eventType] + callBack;
}
/// <summary>
/// 1参添加监听的方法
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="eventType"></param>
/// <param name="callBack"></param>
public static void AddListener<T>(eNventType eventType, CallBack<T> callBack)
{
OnListenerAdding(eventType, callBack);
m_EventTable[eventType] = (CallBack<T>) m_EventTable[eventType] + callBack;
}
/// <summary>
/// 2参添加监听的方法
/// </summary>
/// <typeparam name="T"></typeparam>
/// <typeparam name="X"></typeparam>
/// <param name="eventType"></param>
/// <param name="callBack"></param>
public static void AddListener<T, X>(eNventType eventType, CallBack<T, X> callBack)
{
OnListenerAdding(eventType, callBack);
m_EventTable[eventType] = (CallBack<T, X>) m_EventTable[eventType] + callBack;
}
public static void AddListener<T, X, Y>(eNventType eventType, CallBack<T, X, Y> callBack)
{
OnListenerAdding(eventType, callBack);
m_EventTable[eventType] = (CallBack<T, X, Y>) m_EventTable[eventType] + callBack;
}
public static void AddListener<T, X, Y, Z>(eNventType eventType, CallBack<T, X, Y, Z> callBack)
{
OnListenerAdding(eventType, callBack);
m_EventTable[eventType] = (CallBack<T, X, Y, Z>) m_EventTable[eventType] + callBack;
}
public static void AddListener<T, X, Y, Z, W>(eNventType eventType, CallBack<T, X, Y, Z, W> callBack)
{
OnListenerAdding(eventType, callBack);
m_EventTable[eventType] = (CallBack<T, X, Y, Z, W>) m_EventTable[eventType] + callBack;
}
/// <summary>
/// 移除无参监听的方法
/// </summary>
/// <param name="eventType"></param>
/// <param name="callBack"></param>
public static void RemoveListener(eNventType eventType, CallBack callBack)
{
OnListenerRemoving(eventType, callBack);
m_EventTable[eventType] = (CallBack) m_EventTable[eventType] - callBack;
OnListenerRemoved(eventType);
}
/// <summary>
/// 移除1参监听的方法
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="eventType"></param>
/// <param name="callBack"></param>
public static void RemoveListener<T>(eNventType eventType, CallBack<T> callBack)
{
OnListenerRemoving(eventType, callBack);
m_EventTable[eventType] = (CallBack<T>) m_EventTable[eventType] - callBack;
OnListenerRemoved(eventType);
}
/// <summary>
/// 移除2参监听的方法
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="eventType"></param>
/// <param name="callBack"></param>
public static void RemoveListener<T, X>(eNventType eventType, CallBack<T, X> callBack)
{
OnListenerRemoving(eventType, callBack);
m_EventTable[eventType] = (CallBack<T, X>) m_EventTable[eventType] - callBack;
OnListenerRemoved(eventType);
}
public static void RemoveListener<T, X, Y>(eNventType eventType, CallBack<T, X, Y> callBack)
{
OnListenerRemoving(eventType, callBack);
m_EventTable[eventType] = (CallBack<T, X, Y>) m_EventTable[eventType] - callBack;
OnListenerRemoved(eventType);
}
public static void RemoveListener<T, X, Y, Z>(eNventType eventType, CallBack<T, X, Y, Z> callBack)
{
OnListenerRemoving(eventType, callBack);
m_EventTable[eventType] = (CallBack<T, X, Y, Z>) m_EventTable[eventType] - callBack;
OnListenerRemoved(eventType);
}
public static void RemoveListener<T, X, Y, Z, W>(eNventType eventType, CallBack<T, X, Y, Z, W> callBack)
{
OnListenerRemoving(eventType, callBack);
m_EventTable[eventType] = (CallBack<T, X, Y, Z, W>) m_EventTable[eventType] - callBack;
OnListenerRemoved(eventType);
}
/// <summary>
/// 广播无参方法
/// </summary>
/// <param name="eventType"></param>
public static void Broadcast(eNventType eventType)
{
Delegate d;
if (m_EventTable.TryGetValue(eventType, out d))
{
CallBack callBack = d as CallBack;
if (callBack != null)
{
callBack();
}
else
{
throw new Exception(string.Format("广播事件错误:事件{0}对应的委托具有不同类型", eventType));
}
}
}
/// <summary>
/// 广播1参方法
/// </summary>
/// <param name="eventType"></param>
public static void Broadcast<T>(eNventType eventType, T arg)
{
Delegate d;
if (m_EventTable.TryGetValue(eventType, out d))
{
CallBack<T> callBack = d as CallBack<T>;
if (callBack != null)
{
callBack(arg);
}
else
{
throw new Exception(string.Format("广播事件错误:事件{0}对应的委托具有不同类型", eventType));
}
}
}
/// <summary>
/// 广播2参方法
/// </summary>
/// <param name="eventType"></param>
public static void Broadcast<T, X>(eNventType eventType, T arg1, X arg2)
{
Delegate d;
if (m_EventTable.TryGetValue(eventType, out d))
{
CallBack<T, X> callBack = d as CallBack<T, X>;
if (callBack != null)
{
callBack(arg1, arg2);
}
else
{
throw new Exception(string.Format("广播事件错误:事件{0}对应的委托具有不同类型", eventType));
}
}
}
public static void Broadcast<T, X, Y>(eNventType eventType, T arg1, X arg2, Y arg3)
{
Delegate d;
if (m_EventTable.TryGetValue(eventType, out d))
{
CallBack<T, X, Y> callBack = d as CallBack<T, X, Y>;
if (callBack != null)
{
callBack(arg1, arg2, arg3);
}
else
{
throw new Exception(string.Format("广播事件错误:事件{0}对应的委托具有不同类型", eventType));
}
}
}
public static void Broadcast<T, X, Y, Z>(eNventType eventType, T arg1, X arg2, Y arg3, Z arg4)
{
Delegate d;
if (m_EventTable.TryGetValue(eventType, out d))
{
CallBack<T, X, Y, Z> callBack = d as CallBack<T, X, Y, Z>;
if (callBack != null)
{
callBack(arg1, arg2, arg3, arg4);
}
else
{
throw new Exception(string.Format("广播事件错误:事件{0}对应的委托具有不同类型", eventType));
}
}
}
public static void Broadcast<T, X, Y, Z, W>(eNventType eventType, T arg1, X arg2, Y arg3, Z arg4, W arg5)
{
Delegate d;
if (m_EventTable.TryGetValue(eventType, out d))
{
CallBack<T, X, Y, Z, W> callBack = d as CallBack<T, X, Y, Z, W>;
if (callBack != null)
{
callBack(arg1, arg2, arg3, arg4, arg5);
}
else
{
throw new Exception(string.Format("广播事件错误:事件{0}对应的委托具有不同类型", eventType));
}
}
}
}
CallBack脚本
用作声明委托的类型
public delegate void CallBack();
public delegate void CallBack<T>(T arg);
public delegate void CallBack<T, X>(T arg1, X arg2);
public delegate void CallBack<T, X, Y>(T arg1, X arg2, Y arg3);
public delegate void CallBack<T, X, Y, Z>(T arg1, X arg2, Y arg3, Z arg4);
public delegate void CallBack<T, X, Y, Z,W>(T arg1, X arg2, Y arg3, Z arg4, W arg5);
调用方法
添加监听
private void Awake()
{
EventCenter.AddListener<T>(eNventType.ShowText, Method);
}
private void Method()
{
//监听到事件后执行
}
private void OnDestroy()
{
EventCenter.AddListener<T>(eNventType.ShowText, Method);
}
广播
EventCenter.Broadcast<T>(eNventType.ShowText, T arg1)
- 0
- 0
-
分享