boss_lord_marrowgar.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 "icecrown_citadel.h"
#include "InstanceScript.h"
#include "Map.h"
#include "MotionMaster.h"
#include "MoveSplineInit.h"
#include "ObjectAccessor.h"
#include "Player.h"
#include "PointMovementGenerator.h"
#include "ScriptedCreature.h"
#include "ScriptMgr.h"
#include "SpellAuras.h"
#include "SpellScript.h"
#include "TemporarySummon.h"
 
enum MarrowgarTexts
{
    SAY_ENTER_ZONE              = 0,
    SAY_AGGRO                   = 1,
    SAY_BONE_STORM              = 2,
    SAY_BONESPIKE               = 3,
    SAY_KILL                    = 4,
    SAY_DEATH                   = 5,
    SAY_BERSERK                 = 6,
    EMOTE_BONE_STORM            = 7,
};
 
enum MarrowgarSpells
{
    // Lord Marrowgar
    SPELL_BONE_SLICE            = 69055,
    SPELL_BONE_STORM            = 69076,
    SPELL_BONE_SPIKE_GRAVEYARD  = 69057,
    SPELL_COLDFLAME_NORMAL      = 69140,
    SPELL_COLDFLAME_BONE_STORM  = 72705,
 
    // Bone Spike
    SPELL_IMPALED               = 69065,
    SPELL_RIDE_VEHICLE          = 46598,
 
    // Coldflame
    SPELL_COLDFLAME_PASSIVE     = 69145,
    SPELL_COLDFLAME_SUMMON      = 69147,
};
 
uint32 const BoneSpikeSummonId[3] = {69062, 72669, 72670};
 
enum MarrowgarEvents
{
    EVENT_BONE_SPIKE_GRAVEYARD  = 1,
    EVENT_COLDFLAME             = 2,
    EVENT_BONE_STORM_BEGIN      = 3,
    EVENT_BONE_STORM_MOVE       = 4,
    EVENT_BONE_STORM_END        = 5,
    EVENT_ENABLE_BONE_SLICE     = 6,
    EVENT_ENRAGE                = 7,
    EVENT_WARN_BONE_STORM       = 8,
 
    EVENT_COLDFLAME_TRIGGER     = 9,
    EVENT_FAIL_BONED            = 10,
 
    EVENT_GROUP_SPECIAL         = 1,
};
 
enum MarrowgarPoints
{
    POINT_TARGET_BONESTORM_PLAYER   = 36612631,
    POINT_TARGET_COLDFLAME          = 36672631,
};
 
enum MarrowgarMisc
{
    DATA_COLDFLAME_GUID             = 0,
 
    // Manual marking for targets hit by Bone Slice as no aura exists for this purpose
    // These units are the tanks in this encounter
    // and should be immune to Bone Spike Graveyard
    DATA_SPIKE_IMMUNE               = 1,
    //DATA_SPIKE_IMMUNE_1,          = 2, // Reserved & used
    //DATA_SPIKE_IMMUNE_2,          = 3, // Reserved & used
 
    MAX_BONE_SPIKE_IMMUNE           = 3,
};
 
enum MarrowgarActions
{
    ACTION_CLEAR_SPIKE_IMMUNITIES = 1,
    ACTION_TALK_ENTER_ZONE        = 2
};
 
class BoneSpikeTargetSelector
{
    public:
        BoneSpikeTargetSelector(UnitAI* ai) : _ai(ai) { }
 
        bool operator()(Unit* unit) const
        {
            if (unit->GetTypeId() != TYPEID_PLAYER)
                return false;
 
            if (unit->HasAura(SPELL_IMPALED))
                return false;
 
            // Check if it is one of the tanks soaking Bone Slice
            for (uint32 i = 0; i < MAX_BONE_SPIKE_IMMUNE; ++i)
                if (unit->GetGUID() == _ai->GetGUID(DATA_SPIKE_IMMUNE + i))
                    return false;
 
            return true;
        }
 
    private:
        UnitAI* _ai;
};
 
// 36612 - Lord Marrowgar
struct boss_lord_marrowgar : public BossAI
{
    boss_lord_marrowgar(Creature* creature) : BossAI(creature, DATA_LORD_MARROWGAR)
    {
        _boneStormDuration = RAID_MODE(20s, 30s, 20s, 30s);
        _baseSpeed = creature->GetSpeedRate(MOVE_RUN);
        _coldflameLastPos.Relocate(creature);
        _boneSlice = false;
    }
 
    void Reset() override
    {
        _Reset();
        me->SetSpeedRate(MOVE_RUN, _baseSpeed);
        me->RemoveAurasDueToSpell(SPELL_BONE_STORM);
        me->RemoveAurasDueToSpell(SPELL_BERSERK);
        events.ScheduleEvent(EVENT_ENABLE_BONE_SLICE, 10s);
        events.ScheduleEvent(EVENT_BONE_SPIKE_GRAVEYARD, 15s, EVENT_GROUP_SPECIAL);
        events.ScheduleEvent(EVENT_COLDFLAME, 5s, EVENT_GROUP_SPECIAL);
        events.ScheduleEvent(EVENT_WARN_BONE_STORM, 45s, 50s);
        events.ScheduleEvent(EVENT_ENRAGE, 10min);
        _boneSlice = false;
        _boneSpikeImmune.clear();
    }
 
    void JustEngagedWith(Unit* /*who*/) override
    {
        Talk(SAY_AGGRO);
 
        me->setActive(true);
        DoZoneInCombat();
        instance->SetBossState(DATA_LORD_MARROWGAR, IN_PROGRESS);
    }
 
    void JustDied(Unit* /*killer*/) override
    {
        Talk(SAY_DEATH);
 
        _JustDied();
    }
 
    void JustReachedHome() override
    {
        _JustReachedHome();
        instance->SetBossState(DATA_LORD_MARROWGAR, FAIL);
        instance->SetData(DATA_BONED_ACHIEVEMENT, uint32(true));    // reset
    }
 
    void KilledUnit(Unit* victim) override
    {
        if (victim->GetTypeId() == TYPEID_PLAYER)
            Talk(SAY_KILL);
    }
 
    void UpdateAI(uint32 diff) override
    {
        if (!UpdateVictim())
            return;
 
        events.Update(diff);
 
        if (me->HasUnitState(UNIT_STATE_CASTING))
            return;
 
        while (uint32 eventId = events.ExecuteEvent())
        {
            switch (eventId)
            {
                case EVENT_BONE_SPIKE_GRAVEYARD:
                    if (IsHeroic() || !me->HasAura(SPELL_BONE_STORM))
                        DoCast(me, SPELL_BONE_SPIKE_GRAVEYARD);
                    events.ScheduleEvent(EVENT_BONE_SPIKE_GRAVEYARD, 15s, 20s, EVENT_GROUP_SPECIAL);
                    break;
                case EVENT_COLDFLAME:
                    _coldflameLastPos.Relocate(me);
                    _coldflameTarget.Clear();
                    if (!me->HasAura(SPELL_BONE_STORM))
                        DoCastAOE(SPELL_COLDFLAME_NORMAL);
                    else
                        DoCast(me, SPELL_COLDFLAME_BONE_STORM);
                    events.ScheduleEvent(EVENT_COLDFLAME, 5s, EVENT_GROUP_SPECIAL);
                    break;
                case EVENT_WARN_BONE_STORM:
                    _boneSlice = false;
                    Talk(EMOTE_BONE_STORM);
                    me->FinishSpell(CURRENT_MELEE_SPELL, false);
                    DoCast(me, SPELL_BONE_STORM);
                    events.DelayEvents(3s, EVENT_GROUP_SPECIAL);
                    events.ScheduleEvent(EVENT_BONE_STORM_BEGIN, 3050ms);
                    events.ScheduleEvent(EVENT_WARN_BONE_STORM, 90s, 95s);
                    break;
                case EVENT_BONE_STORM_BEGIN:
                    if (Aura* pStorm = me->GetAura(SPELL_BONE_STORM))
                        pStorm->SetDuration(int32(_boneStormDuration.count()));
                    me->SetSpeedRate(MOVE_RUN, _baseSpeed*3.0f);
                    Talk(SAY_BONE_STORM);
                    events.ScheduleEvent(EVENT_BONE_STORM_END, _boneStormDuration + 1ms);
                    [[fallthrough]];
                case EVENT_BONE_STORM_MOVE:
                {
                    events.ScheduleEvent(EVENT_BONE_STORM_MOVE, _boneStormDuration/3);
                    Unit* unit = SelectTarget(SelectTargetMethod::Random, 0, NonTankTargetSelector(me));
                    if (!unit)
                        unit = SelectTarget(SelectTargetMethod::Random, 0, 0.0f, true);
                    if (unit)
                        me->GetMotionMaster()->MovePoint(POINT_TARGET_BONESTORM_PLAYER, *unit);
                    break;
                }
                case EVENT_BONE_STORM_END:
                    if (MovementGenerator* movement = me->GetMotionMaster()->GetMovementGenerator([](MovementGenerator const* a) -> bool
                    {
                        if (a->GetMovementGeneratorType() == POINT_MOTION_TYPE)
                        {
                            PointMovementGenerator<Creature> const* pointMovement = dynamic_cast<PointMovementGenerator<Creature> const*>(a);
                            return pointMovement && pointMovement->GetId() == POINT_TARGET_BONESTORM_PLAYER;
                        }
                        return false;
                    }))
                        me->GetMotionMaster()->Remove(movement);
                    me->GetMotionMaster()->MoveChase(me->GetVictim());
                    me->SetSpeedRate(MOVE_RUN, _baseSpeed);
                    events.CancelEvent(EVENT_BONE_STORM_MOVE);
                    events.ScheduleEvent(EVENT_ENABLE_BONE_SLICE, 10s);
                    if (!IsHeroic())
                        events.RescheduleEvent(EVENT_BONE_SPIKE_GRAVEYARD, 15s, EVENT_GROUP_SPECIAL);
                    break;
                case EVENT_ENABLE_BONE_SLICE:
                    _boneSlice = true;
                    break;
                case EVENT_ENRAGE:
                    DoCast(me, SPELL_BERSERK, true);
                    Talk(SAY_BERSERK);
                    break;
            }
 
            if (me->HasUnitState(UNIT_STATE_CASTING))
                return;
        }
 
        // We should not melee attack when storming
        if (me->HasAura(SPELL_BONE_STORM))
            return;
 
        // 10 seconds since encounter start Bone Slice replaces melee attacks
        if (_boneSlice && !me->GetCurrentSpell(CURRENT_MELEE_SPELL))
            DoCastVictim(SPELL_BONE_SLICE);
 
        DoMeleeAttackIfReady();
    }
 
    void MovementInform(uint32 type, uint32 id) override
    {
        if (type != POINT_MOTION_TYPE || id != POINT_TARGET_BONESTORM_PLAYER)
            return;
 
        // lock movement
        me->GetMotionMaster()->MoveIdle();
    }
 
    Position const* GetLastColdflamePosition() const
    {
        return &_coldflameLastPos;
    }
 
    ObjectGuid GetGUID(int32 type /*= 0 */) const override
    {
        switch (type)
        {
            case DATA_COLDFLAME_GUID:
                return _coldflameTarget;
            case DATA_SPIKE_IMMUNE + 0:
            case DATA_SPIKE_IMMUNE + 1:
            case DATA_SPIKE_IMMUNE + 2:
            {
                uint32 index = uint32(type - DATA_SPIKE_IMMUNE);
                if (index < _boneSpikeImmune.size())
                    return _boneSpikeImmune[index];
 
                break;
            }
        }
 
        return ObjectGuid::Empty;
    }
 
    void SetGUID(ObjectGuid const& guid, int32 id) override
    {
        switch (id)
        {
            case DATA_COLDFLAME_GUID:
                _coldflameTarget = guid;
                break;
            case DATA_SPIKE_IMMUNE:
                _boneSpikeImmune.push_back(guid);
                break;
        }
    }
 
    void DoAction(int32 action) override
    {
        switch (action)
        {
            case ACTION_CLEAR_SPIKE_IMMUNITIES:
                _boneSpikeImmune.clear();
                break;
            case ACTION_TALK_ENTER_ZONE:
                if (me->IsAlive())
                    Talk(SAY_ENTER_ZONE);
                break;
            default:
                break;
        }
    }
 
private:
    Position _coldflameLastPos;
    GuidVector _boneSpikeImmune;
    ObjectGuid _coldflameTarget;
    Milliseconds _boneStormDuration;
    float _baseSpeed;
    bool _boneSlice;
};
 
typedef boss_lord_marrowgar MarrowgarAI;
 
// 36672 - Coldflame
struct npc_coldflame : public ScriptedAI
{
    npc_coldflame(Creature* creature) : ScriptedAI(creature) { }
 
    void IsSummonedBy(WorldObject* ownerWO) override
    {
        Creature* owner = ownerWO->ToCreature();
        if (!owner)
            return;
 
        Position pos;
        if (MarrowgarAI* marrowgarAI = CAST_AI(MarrowgarAI, owner->GetAI()))
            pos.Relocate(marrowgarAI->GetLastColdflamePosition());
        else
            pos.Relocate(owner);
 
        if (owner->HasAura(SPELL_BONE_STORM))
        {
            float ang = pos.GetAbsoluteAngle(me);
            me->SetOrientation(ang);
            owner->GetNearPoint2D(nullptr, pos.m_positionX, pos.m_positionY, 5.0f - owner->GetCombatReach(), ang);
        }
        else
        {
            Player* target = ObjectAccessor::GetPlayer(*owner, owner->GetAI()->GetGUID(DATA_COLDFLAME_GUID));
            if (!target)
            {
                me->DespawnOrUnsummon();
                return;
            }
 
            float ang = pos.GetAbsoluteAngle(target);
            me->SetOrientation(ang);
            owner->GetNearPoint2D(nullptr, pos.m_positionX, pos.m_positionY, 15.0f - owner->GetCombatReach(), ang);
        }
 
        me->NearTeleportTo(pos.GetPositionX(), pos.GetPositionY(), me->GetPositionZ(), me->GetOrientation());
        DoCast(SPELL_COLDFLAME_SUMMON);
        _events.ScheduleEvent(EVENT_COLDFLAME_TRIGGER, 500ms);
    }
 
    void UpdateAI(uint32 diff) override
    {
        _events.Update(diff);
 
        if (_events.ExecuteEvent() == EVENT_COLDFLAME_TRIGGER)
        {
            Position newPos = me->GetNearPosition(5.0f, 0.0f);
            me->NearTeleportTo(newPos.GetPositionX(), newPos.GetPositionY(), me->GetPositionZ(), me->GetOrientation());
            DoCast(SPELL_COLDFLAME_SUMMON);
            _events.ScheduleEvent(EVENT_COLDFLAME_TRIGGER, 500ms);
        }
    }
 
private:
    EventMap _events;
};
 
// 36619, 38711, 38712 - Bone Spike
struct npc_bone_spike : public ScriptedAI
{
    npc_bone_spike(Creature* creature) : ScriptedAI(creature), _hasTrappedUnit(false)
    {
        ASSERT(creature->GetVehicleKit());
 
        SetCombatMovement(false);
    }
 
    void JustDied(Unit* /*killer*/) override
    {
        if (TempSummon* summ = me->ToTempSummon())
            if (Unit* trapped = summ->GetSummonerUnit())
                trapped->RemoveAurasDueToSpell(SPELL_IMPALED);
 
        me->DespawnOrUnsummon();
    }
 
    void KilledUnit(Unit* victim) override
    {
        me->DespawnOrUnsummon();
        victim->RemoveAurasDueToSpell(SPELL_IMPALED);
    }
 
    void IsSummonedBy(WorldObject* summonerWO) override
    {
        Unit* summoner = summonerWO->ToUnit();
        if (!summoner)
            return;
        DoCast(summoner, SPELL_IMPALED);
        summoner->CastSpell(me, SPELL_RIDE_VEHICLE, true);
        _events.ScheduleEvent(EVENT_FAIL_BONED, 8s);
        _hasTrappedUnit = true;
    }
 
    void PassengerBoarded(Unit* passenger, int8 /*seat*/, bool apply) override
    {
        if (!apply)
            return;
 
        std::function<void(Movement::MoveSplineInit&)> initializer = [](Movement::MoveSplineInit& init)
        {
            init.DisableTransportPathTransformations();
            init.MoveTo(-0.02206125f, -0.02132235f, 5.514783f, false);
        };
        passenger->GetMotionMaster()->LaunchMoveSpline(std::move(initializer), EVENT_VEHICLE_BOARD, MOTION_PRIORITY_HIGHEST);
    }
 
    void UpdateAI(uint32 diff) override
    {
        if (!_hasTrappedUnit)
            return;
 
        _events.Update(diff);
 
        if (_events.ExecuteEvent() == EVENT_FAIL_BONED)
            if (InstanceScript* instance = me->GetInstanceScript())
                instance->SetData(DATA_BONED_ACHIEVEMENT, uint32(false));
    }
 
private:
    EventMap _events;
    bool _hasTrappedUnit;
};
 
// 69140 - Coldflame
class spell_marrowgar_coldflame : public SpellScript
{
    PrepareSpellScript(spell_marrowgar_coldflame);
 
    void SelectTarget(std::list<WorldObject*>& targets)
    {
        targets.clear();
        // select any unit but not the tank
        Unit* target = GetCaster()->GetAI()->SelectTarget(SelectTargetMethod::Random, 0, -GetCaster()->GetCombatReach(), true, false, -SPELL_IMPALED);
        if (!target)
            target = GetCaster()->GetAI()->SelectTarget(SelectTargetMethod::Random, 0, 0.0f, true); // or the tank if its solo
        if (!target)
            return;
 
        GetCaster()->GetAI()->SetGUID(target->GetGUID(), DATA_COLDFLAME_GUID);
        targets.push_back(target);
    }
 
    void HandleScriptEffect(SpellEffIndex effIndex)
    {
        PreventHitDefaultEffect(effIndex);
        GetCaster()->CastSpell(GetHitUnit(), uint32(GetEffectValue()), true);
    }
 
    void Register() override
    {
        OnObjectAreaTargetSelect += SpellObjectAreaTargetSelectFn(spell_marrowgar_coldflame::SelectTarget, EFFECT_0, TARGET_UNIT_DEST_AREA_ENEMY);
        OnEffectHitTarget += SpellEffectFn(spell_marrowgar_coldflame::HandleScriptEffect, EFFECT_0, SPELL_EFFECT_SCRIPT_EFFECT);
    }
};
 
// 72705 - Coldflame (Bonestorm)
class spell_marrowgar_coldflame_bonestorm : public SpellScript
{
    PrepareSpellScript(spell_marrowgar_coldflame_bonestorm);
 
    void HandleScriptEffect(SpellEffIndex effIndex)
    {
        PreventHitDefaultEffect(effIndex);
        for (uint8 i = 0; i < 4; ++i)
            GetCaster()->CastSpell(GetHitUnit(), uint32(GetEffectValue() + i), true);
    }
 
    void Register() override
    {
        OnEffectHitTarget += SpellEffectFn(spell_marrowgar_coldflame_bonestorm::HandleScriptEffect, EFFECT_0, SPELL_EFFECT_SCRIPT_EFFECT);
    }
};
 
// 69146, 70823, 70824, 70825 - Coldflame (Damage)
class spell_marrowgar_coldflame_damage : public AuraScript
{
    PrepareAuraScript(spell_marrowgar_coldflame_damage);
 
    bool CanBeAppliedOn(Unit* target)
    {
        if (target->HasAura(SPELL_IMPALED))
            return false;
 
        if (target->GetExactDist2d(GetOwner()) > GetEffectInfo(EFFECT_0).CalcRadius())
            return false;
 
        if (Aura* aur = target->GetAura(GetId()))
            if (aur->GetOwner() != GetOwner())
                return false;
 
        return true;
    }
 
    void Register() override
    {
        DoCheckAreaTarget += AuraCheckAreaTargetFn(spell_marrowgar_coldflame_damage::CanBeAppliedOn);
    }
};
 
// 69057, 70826, 72088, 72089 - Bone Spike Graveyard
class spell_marrowgar_bone_spike_graveyard : public SpellScript
{
    PrepareSpellScript(spell_marrowgar_bone_spike_graveyard);
 
    bool Validate(SpellInfo const* /*spell*/) override
    {
        return ValidateSpellInfo(BoneSpikeSummonId);
    }
 
    bool Load() override
    {
        return GetCaster()->GetTypeId() == TYPEID_UNIT && GetCaster()->IsAIEnabled();
    }
 
    SpellCastResult CheckCast()
    {
        return GetCaster()->GetAI()->SelectTarget(SelectTargetMethod::Random, 0, BoneSpikeTargetSelector(GetCaster()->GetAI())) ? SPELL_CAST_OK : SPELL_FAILED_NO_VALID_TARGETS;
    }
 
    void HandleSpikes(SpellEffIndex effIndex)
    {
        PreventHitDefaultEffect(effIndex);
        if (Creature* marrowgar = GetCaster()->ToCreature())
        {
            CreatureAI* marrowgarAI = marrowgar->AI();
            uint8 boneSpikeCount = uint8(GetCaster()->GetMap()->GetSpawnMode() & 1 ? 3 : 1);
 
            std::list<Unit*> targets;
            marrowgarAI->SelectTargetList(targets, boneSpikeCount, SelectTargetMethod::Random, 1, BoneSpikeTargetSelector(marrowgarAI));
            if (targets.empty())
                return;
 
            uint32 i = 0;
            for (std::list<Unit*>::const_iterator itr = targets.begin(); itr != targets.end(); ++itr, ++i)
            {
                Unit* target = *itr;
                target->CastSpell(target, BoneSpikeSummonId[i], true);
                if (!target->IsAlive()) // make sure we don't get any stuck spikes on dead targets
                {
                    if (Aura* aura = target->GetAura(SPELL_IMPALED))
                    {
                        if (Creature* spike = ObjectAccessor::GetCreature(*target, aura->GetCasterGUID()))
                            spike->DespawnOrUnsummon();
                        aura->Remove();
                    }
                }
            }
 
            marrowgarAI->Talk(SAY_BONESPIKE);
        }
    }
 
    void Register() override
    {
        OnCheckCast += SpellCheckCastFn(spell_marrowgar_bone_spike_graveyard::CheckCast);
        OnEffectHitTarget += SpellEffectFn(spell_marrowgar_bone_spike_graveyard::HandleSpikes, EFFECT_1, SPELL_EFFECT_APPLY_AURA);
    }
};
 
// 69075, 70834, 70835, 70836 - Bone Storm
class spell_marrowgar_bone_storm : public SpellScript
{
    PrepareSpellScript(spell_marrowgar_bone_storm);
 
    void RecalculateDamage()
    {
        SetHitDamage(int32(GetHitDamage() / std::max(std::sqrt(GetHitUnit()->GetExactDist2d(GetCaster())), 1.0f)));
    }
 
    void Register() override
    {
        OnHit += SpellHitFn(spell_marrowgar_bone_storm::RecalculateDamage);
    }
};
 
// 69055, 70814 - Bone Slice
class spell_marrowgar_bone_slice : public SpellScript
{
    PrepareSpellScript(spell_marrowgar_bone_slice);
 
public:
    spell_marrowgar_bone_slice()
    {
        _targetCount = 0;
    }
 
private:
    void ClearSpikeImmunities()
    {
        GetCaster()->GetAI()->DoAction(ACTION_CLEAR_SPIKE_IMMUNITIES);
    }
 
    void CountTargets(std::list<WorldObject*>& targets)
    {
        _targetCount = std::min<uint32>(targets.size(), GetSpellInfo()->MaxAffectedTargets);
    }
 
    void SplitDamage()
    {
        // Mark the unit as hit, even if the spell missed or was dodged/parried
        GetCaster()->GetAI()->SetGUID(GetHitUnit()->GetGUID(), DATA_SPIKE_IMMUNE);
 
        if (!_targetCount)
            return; // This spell can miss all targets
 
        SetHitDamage(GetHitDamage() / _targetCount);
    }
 
    void Register() override
    {
        BeforeCast += SpellCastFn(spell_marrowgar_bone_slice::ClearSpikeImmunities);
        OnObjectAreaTargetSelect += SpellObjectAreaTargetSelectFn(spell_marrowgar_bone_slice::CountTargets, EFFECT_0, TARGET_UNIT_DEST_AREA_ENEMY);
        OnHit += SpellHitFn(spell_marrowgar_bone_slice::SplitDamage);
    }
 
    uint32 _targetCount;
};
 
class at_lord_marrowgar_entrance : public OnlyOnceAreaTriggerScript
{
    public:
        at_lord_marrowgar_entrance() : OnlyOnceAreaTriggerScript("at_lord_marrowgar_entrance") { }
 
        bool TryHandleOnce(Player* player, AreaTriggerEntry const* /*areaTrigger*/) override
        {
            if (InstanceScript* instance = player->GetInstanceScript())
                if (Creature* lordMarrowgar = ObjectAccessor::GetCreature(*player, instance->GetGuidData(DATA_LORD_MARROWGAR)))
                    lordMarrowgar->AI()->DoAction(ACTION_TALK_ENTER_ZONE);
 
            return true;
        }
 
};
 
void AddSC_boss_lord_marrowgar()
{
    // Creatures
    RegisterIcecrownCitadelCreatureAI(boss_lord_marrowgar);
    RegisterIcecrownCitadelCreatureAI(npc_coldflame);
    RegisterIcecrownCitadelCreatureAI(npc_bone_spike);
 
    // Spells
    RegisterSpellScript(spell_marrowgar_coldflame);
    RegisterSpellScript(spell_marrowgar_coldflame_bonestorm);
    RegisterSpellScript(spell_marrowgar_coldflame_damage);
    RegisterSpellScript(spell_marrowgar_bone_spike_graveyard);
    RegisterSpellScript(spell_marrowgar_bone_storm);
    RegisterSpellScript(spell_marrowgar_bone_slice);
 
    // AreaTriggers
    new at_lord_marrowgar_entrance();
}