cocos2d-x 3.x后原本CCTime被弃用，所以，只能使用C库中的函数获取系统日期和时间

time_t time_now;
time(&time_now);
struct tm* t = localtime(&time_now);

int nHour    = t->tm_hour;
int nMinute  = t->tm_min;
int nSecond  = t->tm_sec;

log("hh:%d",nHour);
log("mm:%d",nMinute);
log("ss:%d",nSecond);