由于cocos2dx本身的NotificationCenter是没有进行线程安全处理的，所以当我们在cocos2dx里面使用多线程进行消息同步的时候，
会出现问题。那么为了解决这个问题，我们只需要进行线程安全锁定即可。
为了不修改源码，我模仿NotificationCenter，自定义了一个消息管理。
/**************************************************************
* Copyright (c) 2014-11-12 by real.Xm
* Blog Address: http://blog.csdn.net/q229827701
* Email: 229827701@qq.com
**************************************************************/
#ifndef __XMESSAGE__H
#define __XMESSAGE__H
#include "cocos2d.h"
class XMessage;
class CC_DLL MessageMsg : public cocos2d::Ref
{
public:
MessageMsg();
virtual ~MessageMsg();
static MessageMsg* getInstance();
bool addObserver(const std::string &msgName,cocos2d::Ref* target,
cocos2d::SEL_CallFuncO selector,cocos2d::Ref* msgContent = nullptr);
bool postMessage(const std::string &msgName,cocos2d::Ref* msgContent);
bool removeObserverByName(const std::string &msgName,cocos2d::Ref* target = nullptr);
bool removeAllObservers(cocos2d::Ref* target);
protected:
XMessage* getMessageByName(const std::string &msgName) const;
private:
//message container
cocos2d::Vector<XMessage*> _msgContainer;
};
class CC_DLL XMessage: public cocos2d::Ref
{
public:
XMessage(const std::string &msgName,cocos2d::Ref* target,
cocos2d::SEL_CallFuncO selector,cocos2d::Ref* msgContent);
~XMessage();
void handerMessage(cocos2d::Ref* msgContent);
CC_SYNTHESIZE_READONLY(std::string,_msgName,MessageName);//message name
CC_SYNTHESIZE_READONLY(cocos2d::Ref*,_target,Target); //target
CC_SYNTHESIZE_READONLY(cocos2d::SEL_CallFuncO,_selector,Selector);//function
CC_SYNTHESIZE_READONLY(cocos2d::Ref*,_msgContent,MessageConent);//function args
};
#endif // !_XMESSAGE_H
#include "XMessageManger.h"
std::mutex _ContainerMutex;
static MessageMsg* _Manager = nullptr;
MessageMsg::MessageMsg()
{
}
MessageMsg::~MessageMsg()
{
_msgContainer.clear();
}
MessageMsg* MessageMsg::getInstance()
{
if (!_Manager)
{
_Manager = new MessageMsg;
}
return _Manager;
}
bool MessageMsg::addObserver( const std::string &msgName,cocos2d::Ref* target,cocos2d::SEL_CallFuncO selector,cocos2d::Ref* msgContent /*= nullptr*/ )
{
if (!getMessageByName(msgName))
{
auto msg = new XMessage(msgName,target,selector,msgContent);
IF_NULL_RETURN_FALSE(msg);
msg->autorelease();
std::lock_guard<std::mutex> ul(_ContainerMutex);
_msgContainer.pushBack(msg);
return true;
}
return false;
}
bool MessageMsg::postMessage( const std::string &msgName,cocos2d::Ref* msgContent )
{
auto msg = getMessageByName(msgName);
if (msg)
{
msg->handerMessage(msgContent);
return true;
}
return false;
}
XMessage* MessageMsg::getMessageByName( const std::string &msgName ) const
{
std::lock_guard<std::mutex> ul(_ContainerMutex);
for (auto &msg : _msgContainer)
{
if (msgName == msg->getMessageName())
{
return msg;
}
}
return nullptr;
}
bool MessageMsg::removeObserverByName( const std::string &msgName,cocos2d::Ref* target /*= nullptr*/ )
{
std::lock_guard<std::mutex> ul(_ContainerMutex);
for (auto &msg : _msgContainer)
{
if (msgName == msg->getMessageName()
&&(target == msg->getTarget()||!target))
{
_msgContainer.eraseObject(msg,true);
return true;
}
}
return false;
}
bool MessageMsg::removeAllObservers( cocos2d::Ref* target )
{
std::lock_guard<std::mutex> ul(_ContainerMutex);
for (auto &msg : _msgContainer)
{
if (target == msg->getTarget())
{
_msgContainer.eraseObject(msg,true);
return true;
}
}
return false;
}
//////////////////////////////////////////////////////////////////////////
/// XMessage Class
/////////////////////////////////////////////////////////////////////////
XMessage::XMessage( const std::string &msgName,cocos2d::Ref* target,
cocos2d::SEL_CallFuncO selector,cocos2d::Ref* msgContent )
:_msgName(msgName),_target(target),_selector(selector),_msgContent(msgContent)
{
}
XMessage::~XMessage()
{
}
void XMessage::handerMessage( cocos2d::Ref* msgContent )
{
if (_target)
{
if (msgContent) {
(_target->*_selector)(msgContent);
} else {
(_target->*_selector)(msgContent);
}
}
}
原文地址：http://blog.csdn.net/q229827701/article/details/41042147
