Set

std::set<uint64> test;

class creation_event_2 : public CreatureScript
{
public:
    creation_event_2() : CreatureScript("creation_event_2") { }

    struct creation_event_2AI : public ScriptedAI
    {
        creation_event_2AI(Creature * pCreature) : ScriptedAI(pCreature){}

        void MoveInLineOfSight(Unit * player)
        {
            if(!player || !player->isAlive() || player->GetTypeId() != TYPEID_PLAYER || player->HasAura(44795))
                return;

            if(me->IsWithinDistInMap(player, 10.0f))
            {
                if(me->GetDistance(player) <= 10.0f)
                {
                    if(test.find(player->GetGUID()) == test.end())
                    test.insert(player->GetGUID());
                    me->HandleEmoteCommand(EMOTE_ONESHOT_CHEER);
                    me->MonsterSay("Woohoo! Another survivor! At this rate we might have enough to gather an army!", LANG_UNIVERSAL, NULL);
                }

            }
        }
    }
};

CreatureAI * GetAI(Creature * c) const
{
    return new creation_event_2AI(c);
}
};