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CCTimer类，上面几篇定时器的分析的文章中，多次用到了 这个类，在这里进行下说明。 1、第一次用到在CCScheduler::scheduleSelector函数中，一个target需要 添加多个时间间隔定时器时会出现，每一个CCTimer代表一个时间间隔定时器，包含一个定时器的全部信息。
初始化方法： /** Initializes a timer with a target, a selector and an interval in seconds, repeat in number of times to repeat, delay in seconds. * @lua NA */ bool initWithTarget(CCObject *pTarget, SEL_SCHEDULE pfnSelector, float fSeconds, unsigned int nRepeat, float fDelay);
2、第二次是在脚本定时器中使用，unsigned int CCScheduler::scheduleScriptFunc(unsigned int nHandler, float fInterval, bool bPaused)脚本定时器会用到CCSchedulerScriptHandlerEntry，这个类中有一个成员变量是CCTimer，会使用方法： /** Initializes a timer with a script callback function and an interval in seconds. */ bool initWithScriptHandler(int nHandler, float fSeconds); 3、void CCScheduler::update(float dt)函数中，会调用相应CCTimer的update方法， -->> void CCTimer::update(float dt){ if (m_fElapsed == -1) { m_fElapsed = 0; m_uTimesExecuted = 0; } else { if (m_bRunForever && !m_bUseDelay) {//standard timer usage m_fElapsed += dt; if (m_fElapsed >= m_fInterval) { //执行回调函数 if (m_pTarget && m_pfnSelector) { (m_pTarget->*m_pfnSelector)(m_fElapsed); } //执行脚本回调函数 if (m_nScriptHandler) { CCScriptEngineManager::sharedManager()->getScriptEngine()->executeSchedule(m_nScriptHandler, m_fElapsed); } m_fElapsed = 0; } } else {//advanced usage m_fElapsed += dt; if (m_bUseDelay) { if( m_fElapsed >= m_fDelay ) { if (m_pTarget && m_pfnSelector) { (m_pTarget->*m_pfnSelector)(m_fElapsed); } if (m_nScriptHandler) { CCScriptEngineManager::sharedManager()->getScriptEngine()->executeSchedule(m_nScriptHandler, m_fElapsed); } m_fElapsed = m_fElapsed - m_fDelay; m_uTimesExecuted += 1; m_bUseDelay = false; } } else { if (m_fElapsed >= m_fInterval) { if (m_pTarget && m_pfnSelector) { (m_pTarget->*m_pfnSelector)(m_fElapsed); } if (m_nScriptHandler) { CCScriptEngineManager::sharedManager()->getScriptEngine()->executeSchedule(m_nScriptHandler, m_fElapsed); } m_fElapsed = 0; m_uTimesExecuted += 1; } } if (!m_bRunForever && m_uTimesExecuted > m_uRepeat) { //unschedule timer CCDirector::sharedDirector()->getScheduler()->unscheduleSelector(m_pfnSelector, m_pTarget); } } }} 转载地址：http://otsmi.baihongyu.com/