boss_maexxna.cpp

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/*
 * This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */
 
#include "ScriptMgr.h"
#include "InstanceScript.h"
#include "MotionMaster.h"
#include "naxxramas.h"
#include "ObjectAccessor.h"
#include "PassiveAI.h"
#include "ScriptedCreature.h"
 
enum Spells
{
 SPELL_WEB_WRAP = 28622,
 SPELL_POISON_SHOCK = 28741,
 SPELL_NECROTIC_POISON = 28776,
 SPELL_FRENZY = 54123
};
 
#define SPELL_WEB_SPRAY RAID_MODE(29484,54125)
#define SPELL_FRENZY_HELPER RAID_MODE(54123,54124)
 
enum Emotes
{
 EMOTE_SPIDERS = 0,
 EMOTE_WEB_WRAP = 1,
 EMOTE_WEB_SPRAY = 2
};
 
enum Creatures
{
 NPC_WEB_WRAP = 16486,
 NPC_SPIDERLING = 17055,
};
 
#define MAX_WRAP_POSITION 7
const Position WrapPositions[MAX_WRAP_POSITION] =
{
 {3453.818f, -3854.651f, 308.7581f, 4.362833f},
 {3535.042f, -3842.383f, 300.795f, 3.179324f},
 {3538.399f, -3846.088f, 299.964f, 4.310297f},
 {3548.464f, -3854.676f, 298.6075f, 4.546609f},
 {3557.663f, -3870.123f, 297.5027f, 3.756433f},
 {3560.546f, -3879.353f, 297.4843f, 2.508937f},
 {3562.535f, -3892.507f, 298.532f, 6.022466f},
};
 
enum Events
{
 EVENT_NONE,
 EVENT_SPRAY,
 EVENT_SHOCK,
 EVENT_POISON,
 EVENT_WRAP,
 EVENT_SUMMON,
};
 
const float WEB_WRAP_MOVE_SPEED = 20.0f;
 
struct WebTargetSelector
{
 WebTargetSelector(Unit* maexxna) : _maexxna(maexxna) {}
 bool operator()(Unit const* target) const
 {
 if (target->GetTypeId() != TYPEID_PLAYER) // never web nonplayers (pets, guardians, etc.)
 return false;
 if (_maexxna->GetVictim() == target) // never target tank
 return false;
 if (target->HasAura(SPELL_WEB_WRAP)) // never target targets that are already webbed
 return false;
 return true;
 }
 
 private:
 Unit const* _maexxna;
};
 
struct boss_maexxna : public BossAI
{
 boss_maexxna(Creature* creature) : BossAI(creature, BOSS_MAEXXNA) { }
 
 void JustEngagedWith(Unit* who) override
 {
 BossAI::JustEngagedWith(who);
 events.ScheduleEvent(EVENT_WRAP, 20s);
 events.ScheduleEvent(EVENT_SPRAY, 40s);
 events.ScheduleEvent(EVENT_SHOCK, randtime(Seconds(5), Seconds(10)));
 events.ScheduleEvent(EVENT_POISON, randtime(Seconds(10), Seconds(15)));
 events.ScheduleEvent(EVENT_SUMMON, 30s);
 }
 
 void Reset() override
 {
 _Reset();
 instance->DoRemoveAurasDueToSpellOnPlayers(SPELL_WEB_WRAP);
 }
 
 void UpdateAI(uint32 diff) override
 {
 if (!UpdateVictim())
 return;
 
 if (HealthBelowPct(30) && !me->HasAura(SPELL_FRENZY_HELPER))
 {
 DoCast(SPELL_FRENZY);
 }
 
 events.Update(diff);
 
 while (uint32 eventId = events.ExecuteEvent())
 {
 switch (eventId)
 {
 case EVENT_WRAP:
 {
 std::list<Unit*> targets;
 SelectTargetList(targets, RAID_MODE(1, 2), SelectTargetMethod::Random, 1, WebTargetSelector(me));
 if (!targets.empty())
 {
 Talk(EMOTE_WEB_WRAP);
 int8 wrapPos = -1;
 for (Unit* target : targets)
 {
 if (wrapPos == -1) // allow all positions on the first target
 wrapPos = urand(0, MAX_WRAP_POSITION - 1);
 else // on subsequent iterations, only allow positions that are not equal to the previous one (this is sufficient since we should only have two targets at most, ever)
 wrapPos = (wrapPos + urand(1, MAX_WRAP_POSITION - 1)) % MAX_WRAP_POSITION;
 
 target->RemoveAura(SPELL_WEB_SPRAY);
 if (Creature* wrap = DoSummon(NPC_WEB_WRAP, WrapPositions[wrapPos], 70s, TEMPSUMMON_TIMED_DESPAWN))
 {
 wrap->AI()->SetGUID(target->GetGUID()); // handles application of debuff
 target->GetMotionMaster()->MoveJump(WrapPositions[wrapPos], WEB_WRAP_MOVE_SPEED, WEB_WRAP_MOVE_SPEED); // move after stun to avoid stun cancelling move
 }
 }
 }
 events.Repeat(Seconds(40));
 break;
 }
 case EVENT_SPRAY:
 Talk(EMOTE_WEB_SPRAY);
 DoCastAOE(SPELL_WEB_SPRAY);
 events.Repeat(Seconds(40));
 break;
 case EVENT_SHOCK:
 DoCastAOE(SPELL_POISON_SHOCK);
 events.Repeat(randtime(Seconds(10), Seconds(20)));
 break;
 case EVENT_POISON:
 DoCastVictim(SPELL_NECROTIC_POISON);
 events.Repeat(randtime(Seconds(10), Seconds(20)));
 break;
 case EVENT_SUMMON:
 Talk(EMOTE_SPIDERS);
 uint8 amount = urand(8, 10);
 for (uint8 i = 0; i < amount; ++i)
 DoSummon(NPC_SPIDERLING, me, 4.0f, 5s, TEMPSUMMON_CORPSE_TIMED_DESPAWN);
 events.Repeat(Seconds(40));
 break;
 }
 }
 }
};
 
struct npc_webwrap : public NullCreatureAI
{
 npc_webwrap(Creature* creature) : NullCreatureAI(creature), visibleTimer(0) { }
 
 ObjectGuid victimGUID;
 uint32 visibleTimer;
 
 void InitializeAI() override
 {
 me->SetVisible(false);
 }
 
 void SetGUID(ObjectGuid const& guid, int32 /*id*/) override
 {
 if (!guid)
 return;
 victimGUID = guid;
 if (Unit* victim = ObjectAccessor::GetUnit(*me, victimGUID))
 {
 visibleTimer = (me->GetDistance2d(victim) / WEB_WRAP_MOVE_SPEED + 0.5f) * AsUnderlyingType(IN_MILLISECONDS);
 victim->CastSpell(victim, SPELL_WEB_WRAP, CastSpellExtraArgs(TRIGGERED_FULL_MASK)
 .SetOriginalCaster(me->GetGUID()));
 }
 }
 
 void UpdateAI(uint32 diff) override
 {
 if (!visibleTimer)
 return;
 
 if (diff >= visibleTimer)
 {
 visibleTimer = 0;
 me->SetVisible(true);
 }
 else
 visibleTimer -= diff;
 }
 
 void JustDied(Unit* /*killer*/) override
 {
 if (!victimGUID.IsEmpty())
 if (Unit* victim = ObjectAccessor::GetUnit(*me, victimGUID))
 victim->RemoveAurasDueToSpell(SPELL_WEB_WRAP, me->GetGUID());
 
 me->DespawnOrUnsummon(5s);
 }
};
 
void AddSC_boss_maexxna()
{
 RegisterNaxxramasCreatureAI(boss_maexxna);
 RegisterNaxxramasCreatureAI(npc_webwrap);
}