struct MANGOS_DLL_DECL npc_fireworkAI : public ScriptedAI
{
    npc_firework(Creature* pCreature) : ScriptedAI(pCreature)
    {
        m_bFireworkPossible = false;
        m_bTethyrComplete = false;

        m_uiFirework_1_Timer = urand(1000, 2500);
        m_uiFirework_2_Timer = urand(1000, 2500);
        m_uiFirework_3_Timer = urand(1000, 2500);
        m_uiTethyrCheckTimer = 15000;
        Reset();
    }

    bool m_bFireworkPossible;
    bool m_bTethyrComplete;

    uint32 m_uiFirework_1_Timer;
    uint32 m_uiFirework_2_Timer;
    uint32 m_uiFirework_3_Timer;
    uint32 m_uiTethyrCheckTimer;

    void Reset()
    {
    m_bFireworkPossible = false;
    m_bTethyrComplete = false;

    m_uiFirework_1_Timer = urand(1000, 2500);
    m_uiFirework_2_Timer = urand(1000, 2500);
    m_uiFirework_3_Timer = urand(1000, 2500);
    m_uiTethyrCheckTimer = 15000;
    }

    void UpdateAI(const uint32 uiDiff)
    {
        if(m_uiTethyrCheckTimer < uiDiff && m_bFireworkPossible == false)
        {
            Creature* pTethyr = GetClosestCreatureWithEntry(m_creature, MOB_TETHYR, 150.0f);

            if (pTethyr)
            {
                m_bFireworkPossible = true;
            }
        }

        if(m_bFireworkPossible == true)
        {
            if(m_bTethyrComplete == true)
            {
                switch(urand(0, 2))
                {
                    case 0:
                        if(m_uiFirework_1_Timer < uiDiff)
                        {
                            DoCastSpellIfCan(m_creature, SPELL_FIREWORK_1, CAST_TRIGGERED);
                            m_uiFirework_1_Timer = urand(1000, 2000);
                        }
                        break;
                    case 1:
                        if(m_uiFirework_2_Timer < uiDiff)
                        {
                            DoCastSpellIfCan(m_creature, SPELL_FIREWORK_2, CAST_TRIGGERED);
                            m_uiFirework_2_Timer = urand(1000, 2000);
                        }
                        break;
                    case 2:
                        if(m_uiFirework_3_Timer < uiDiff)
                        {
                            DoCastSpellIfCan(m_creature, SPELL_FIREWORK_3, CAST_TRIGGERED);
                            m_uiFirework_3_Timer = urand(1000, 2000);
                        }
                        break;
                }
            }
        }
    }
};

CreatureAI* GetAI_npc_firework(Creature* pCreature)
{
    return new npc_fireworkAI(pCreature);
}