Spell.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 "Spell.h"
#include "AzeriteEmpoweredItem.h"
#include "Battlefield.h"
#include "BattlefieldMgr.h"
#include "Battleground.h"
#include "BattlePetMgr.h"
#include "CellImpl.h"
#include "CharmInfo.h"
#include "CollectionMgr.h"
#include "CombatLogPackets.h"
#include "Common.h"
#include "ConditionMgr.h"
#include "Containers.h"
#include "CreatureAI.h"
#include "DB2Stores.h"
#include "DatabaseEnv.h"
#include "DisableMgr.h"
#include "DynamicObject.h"
#include "G3DPosition.hpp"
#include "GameObjectAI.h"
#include "GridNotifiersImpl.h"
#include "Guild.h"
#include "InstanceLockMgr.h"
#include "InstanceScript.h"
#include "Item.h"
#include "Log.h"
#include "Loot.h"
#include "LootMgr.h"
#include "ObjectAccessor.h"
#include "ObjectMgr.h"
#include "PathGenerator.h"
#include "Pet.h"
#include "PhasingHandler.h"
#include "Player.h"
#include "ScriptMgr.h"
#include "SharedDefines.h"
#include "SpellAuraEffects.h"
#include "SpellHistory.h"
#include "SpellInfo.h"
#include "SpellMgr.h"
#include "SpellPackets.h"
#include "SpellScript.h"
#include "TemporarySummon.h"
#include "TradeData.h"
#include "TraitPackets.h"
#include "UniqueTrackablePtr.h"
#include "Util.h"
#include "VMapFactory.h"
#include "Vehicle.h"
#include "VMapManager2.h"
#include "World.h"
#include "WorldSession.h"
#include <numeric>
#include <sstream>
 
extern NonDefaultConstructible<SpellEffectHandlerFn> SpellEffectHandlers[TOTAL_SPELL_EFFECTS];
 
SpellDestination::SpellDestination()
{
 _position.Relocate(0, 0, 0, 0);
 _transportGUID.Clear();
 _transportOffset.Relocate(0, 0, 0, 0);
}
 
SpellDestination::SpellDestination(float x, float y, float z, float orientation, uint32 mapId)
{
 _position.Relocate(x, y, z, orientation);
 _transportGUID.Clear();
 _position.m_mapId = mapId;
 _transportOffset.Relocate(0, 0, 0, 0);
}
 
SpellDestination::SpellDestination(Position const& pos)
{
 _position.Relocate(pos);
 _transportGUID.Clear();
 _transportOffset.Relocate(0, 0, 0, 0);
}
 
SpellDestination::SpellDestination(WorldLocation const& loc)
{
 _position.WorldRelocate(loc);
 _transportGUID.Clear();
 _transportOffset.Relocate(0, 0, 0, 0);
}
 
SpellDestination::SpellDestination(WorldObject const& wObj)
{
 _transportGUID = wObj.GetTransGUID();
 _transportOffset.Relocate(wObj.GetTransOffsetX(), wObj.GetTransOffsetY(), wObj.GetTransOffsetZ(), wObj.GetTransOffsetO());
 _position.Relocate(wObj);
}
 
void SpellDestination::Relocate(Position const& pos)
{
 if (!_transportGUID.IsEmpty())
 {
 Position offset;
 _position.GetPositionOffsetTo(pos, offset);
 _transportOffset.RelocateOffset(offset);
 }
 _position.Relocate(pos);
}
 
void SpellDestination::RelocateOffset(Position const& offset)
{
 if (!_transportGUID.IsEmpty())
 _transportOffset.RelocateOffset(offset);
 
 _position.RelocateOffset(offset);
}
 
SpellCastTargets::SpellCastTargets() : m_targetMask(0), m_objectTarget(nullptr), m_itemTarget(nullptr),
 m_itemTargetEntry(0), m_pitch(0.0f), m_speed(0.0f)
{
}
 
SpellCastTargets::SpellCastTargets(Unit* caster, WorldPackets::Spells::SpellCastRequest const& spellCastRequest) :
 m_targetMask(spellCastRequest.Target.Flags), m_objectTarget(nullptr), m_itemTarget(nullptr),
 m_objectTargetGUID(spellCastRequest.Target.Unit), m_itemTargetGUID(spellCastRequest.Target.Item),
 m_itemTargetEntry(0), m_pitch(0.0f), m_speed(0.0f), m_strTarget(spellCastRequest.Target.Name)
{
 if (spellCastRequest.Target.SrcLocation)
 {
 m_src._transportGUID = spellCastRequest.Target.SrcLocation->Transport;
 Position* pos;
 if (!m_src._transportGUID.IsEmpty())
 pos = &m_src._transportOffset;
 else
 pos = &m_src._position;
 
 pos->Relocate(spellCastRequest.Target.SrcLocation->Location.Pos);
 if (spellCastRequest.Target.Orientation)
 pos->SetOrientation(*spellCastRequest.Target.Orientation);
 }
 
 if (spellCastRequest.Target.DstLocation)
 {
 m_dst._transportGUID = spellCastRequest.Target.DstLocation->Transport;
 Position* pos;
 if (!m_dst._transportGUID.IsEmpty())
 pos = &m_dst._transportOffset;
 else
 pos = &m_dst._position;
 
 pos->Relocate(spellCastRequest.Target.DstLocation->Location.Pos);
 if (spellCastRequest.Target.Orientation)
 pos->SetOrientation(*spellCastRequest.Target.Orientation);
 }
 
 SetPitch(spellCastRequest.MissileTrajectory.Pitch);
 SetSpeed(spellCastRequest.MissileTrajectory.Speed);
 
 Update(caster);
}
 
SpellCastTargets::~SpellCastTargets() { }
 
void SpellCastTargets::Write(WorldPackets::Spells::SpellTargetData& data)
{
 data.Flags = m_targetMask;
 
 if (m_targetMask & (TARGET_FLAG_UNIT | TARGET_FLAG_CORPSE_ALLY | TARGET_FLAG_GAMEOBJECT | TARGET_FLAG_CORPSE_ENEMY | TARGET_FLAG_UNIT_MINIPET))
 data.Unit = m_objectTargetGUID;
 
 if (m_targetMask & (TARGET_FLAG_ITEM | TARGET_FLAG_TRADE_ITEM) && m_itemTarget)
 data.Item = m_itemTarget->GetGUID();
 
 if (m_targetMask & TARGET_FLAG_SOURCE_LOCATION)
 {
 data.SrcLocation.emplace();
 data.SrcLocation->Transport = m_src._transportGUID; // relative position guid here - transport for example
 if (!m_src._transportGUID.IsEmpty())
 data.SrcLocation->Location = m_src._transportOffset;
 else
 data.SrcLocation->Location = m_src._position;
 }
 
 if (m_targetMask & TARGET_FLAG_DEST_LOCATION)
 {
 data.DstLocation.emplace();
 data.DstLocation->Transport = m_dst._transportGUID; // relative position guid here - transport for example
 if (!m_dst._transportGUID.IsEmpty())
 data.DstLocation->Location = m_dst._transportOffset;
 else
 data.DstLocation->Location = m_dst._position;
 }
 
 if (m_targetMask & TARGET_FLAG_STRING)
 data.Name = m_strTarget;
}
 
ObjectGuid SpellCastTargets::GetUnitTargetGUID() const
{
 if (m_objectTargetGUID.IsUnit())
 return m_objectTargetGUID;
 
 return ObjectGuid::Empty;
}
 
Unit* SpellCastTargets::GetUnitTarget() const
{
 if (m_objectTarget)
 return m_objectTarget->ToUnit();
 
 return nullptr;
}
 
void SpellCastTargets::SetUnitTarget(Unit* target)
{
 if (!target)
 return;
 
 m_objectTarget = target;
 m_objectTargetGUID = target->GetGUID();
 m_targetMask |= TARGET_FLAG_UNIT;
}
 
ObjectGuid SpellCastTargets::GetGOTargetGUID() const
{
 if (m_objectTargetGUID.IsAnyTypeGameObject())
 return m_objectTargetGUID;
 
 return ObjectGuid::Empty;
}
 
GameObject* SpellCastTargets::GetGOTarget() const
{
 if (m_objectTarget)
 return m_objectTarget->ToGameObject();
 
 return nullptr;
}
 
void SpellCastTargets::SetGOTarget(GameObject* target)
{
 if (!target)
 return;
 
 m_objectTarget = target;
 m_objectTargetGUID = target->GetGUID();
 m_targetMask |= TARGET_FLAG_GAMEOBJECT;
}
 
ObjectGuid SpellCastTargets::GetCorpseTargetGUID() const
{
 if (m_objectTargetGUID.IsCorpse())
 return m_objectTargetGUID;
 
 return ObjectGuid::Empty;
}
 
Corpse* SpellCastTargets::GetCorpseTarget() const
{
 if (m_objectTarget)
 return m_objectTarget->ToCorpse();
 
 return nullptr;
}
 
WorldObject* SpellCastTargets::GetObjectTarget() const
{
 return m_objectTarget;
}
 
ObjectGuid SpellCastTargets::GetObjectTargetGUID() const
{
 return m_objectTargetGUID;
}
 
void SpellCastTargets::RemoveObjectTarget()
{
 m_objectTarget = nullptr;
 m_objectTargetGUID.Clear();
 m_targetMask &= ~(TARGET_FLAG_UNIT_MASK | TARGET_FLAG_CORPSE_MASK | TARGET_FLAG_GAMEOBJECT_MASK);
}
 
void SpellCastTargets::SetItemTarget(Item* item)
{
 if (!item)
 return;
 
 m_itemTarget = item;
 m_itemTargetGUID = item->GetGUID();
 m_itemTargetEntry = item->GetEntry();
 m_targetMask |= TARGET_FLAG_ITEM;
}
 
void SpellCastTargets::SetTradeItemTarget(Player* caster)
{
 m_itemTargetGUID = ObjectGuid::TradeItem;
 m_itemTargetEntry = 0;
 m_targetMask |= TARGET_FLAG_TRADE_ITEM;
 
 Update(caster);
}
 
void SpellCastTargets::UpdateTradeSlotItem()
{
 if (m_itemTarget && (m_targetMask & TARGET_FLAG_TRADE_ITEM))
 {
 m_itemTargetGUID = m_itemTarget->GetGUID();
 m_itemTargetEntry = m_itemTarget->GetEntry();
 }
}
 
SpellDestination const* SpellCastTargets::GetSrc() const
{
 return &m_src;
}
 
Position const* SpellCastTargets::GetSrcPos() const
{
 return &m_src._position;
}
 
void SpellCastTargets::SetSrc(float x, float y, float z)
{
 m_src = SpellDestination(x, y, z);
 m_targetMask |= TARGET_FLAG_SOURCE_LOCATION;
}
 
void SpellCastTargets::SetSrc(Position const& pos)
{
 m_src = SpellDestination(pos);
 m_targetMask |= TARGET_FLAG_SOURCE_LOCATION;
}
 
void SpellCastTargets::SetSrc(WorldObject const& wObj)
{
 m_src = SpellDestination(wObj);
 m_targetMask |= TARGET_FLAG_SOURCE_LOCATION;
}
 
void SpellCastTargets::ModSrc(Position const& pos)
{
 ASSERT(m_targetMask & TARGET_FLAG_SOURCE_LOCATION);
 m_src.Relocate(pos);
}
 
void SpellCastTargets::RemoveSrc()
{
 m_targetMask &= ~(TARGET_FLAG_SOURCE_LOCATION);
}
 
SpellDestination const* SpellCastTargets::GetDst() const
{
 return &m_dst;
}
 
WorldLocation const* SpellCastTargets::GetDstPos() const
{
 return &m_dst._position;
}
 
void SpellCastTargets::SetDst(float x, float y, float z, float orientation, uint32 mapId)
{
 m_dst = SpellDestination(x, y, z, orientation, mapId);
 m_targetMask |= TARGET_FLAG_DEST_LOCATION;
}
 
void SpellCastTargets::SetDst(Position const& pos)
{
 m_dst = SpellDestination(pos);
 m_targetMask |= TARGET_FLAG_DEST_LOCATION;
}
 
void SpellCastTargets::SetDst(WorldObject const& wObj)
{
 m_dst = SpellDestination(wObj);
 m_targetMask |= TARGET_FLAG_DEST_LOCATION;
}
 
void SpellCastTargets::SetDst(SpellDestination const& spellDest)
{
 m_dst = spellDest;
 m_targetMask |= TARGET_FLAG_DEST_LOCATION;
}
 
void SpellCastTargets::SetDst(SpellCastTargets const& spellTargets)
{
 m_dst = spellTargets.m_dst;
 m_targetMask |= TARGET_FLAG_DEST_LOCATION;
}
 
void SpellCastTargets::ModDst(Position const& pos)
{
 ASSERT(m_targetMask & TARGET_FLAG_DEST_LOCATION);
 m_dst.Relocate(pos);
}
 
void SpellCastTargets::ModDst(SpellDestination const& spellDest)
{
 ASSERT(m_targetMask & TARGET_FLAG_DEST_LOCATION);
 m_dst = spellDest;
}
 
void SpellCastTargets::RemoveDst()
{
 m_targetMask &= ~(TARGET_FLAG_DEST_LOCATION);
}
 
bool SpellCastTargets::HasSrc() const
{
 return (GetTargetMask() & TARGET_FLAG_SOURCE_LOCATION) != 0;
}
 
bool SpellCastTargets::HasDst() const
{
 return (GetTargetMask() & TARGET_FLAG_DEST_LOCATION) != 0;
}
 
void SpellCastTargets::Update(WorldObject* caster)
{
 m_objectTarget = (m_objectTargetGUID == caster->GetGUID()) ? caster : ObjectAccessor::GetWorldObject(*caster, m_objectTargetGUID);
 
 m_itemTarget = nullptr;
 if (caster->GetTypeId() == TYPEID_PLAYER)
 {
 Player* player = caster->ToPlayer();
 if (m_targetMask & TARGET_FLAG_ITEM)
 m_itemTarget = player->GetItemByGuid(m_itemTargetGUID);
 else if (m_targetMask & TARGET_FLAG_TRADE_ITEM)
 {
 if (m_itemTargetGUID == ObjectGuid::TradeItem)
 if (TradeData* pTrade = player->GetTradeData())
 m_itemTarget = pTrade->GetTraderData()->GetItem(TRADE_SLOT_NONTRADED);
 }
 
 if (m_itemTarget)
 m_itemTargetEntry = m_itemTarget->GetEntry();
 }
 
 // update positions by transport move
 if (HasSrc() && !m_src._transportGUID.IsEmpty())
 {
 if (WorldObject* transport = ObjectAccessor::GetWorldObject(*caster, m_src._transportGUID))
 {
 m_src._position.Relocate(transport);
 m_src._position.RelocateOffset(m_src._transportOffset);
 }
 }
 
 if (HasDst() && !m_dst._transportGUID.IsEmpty())
 {
 if (WorldObject* transport = ObjectAccessor::GetWorldObject(*caster, m_dst._transportGUID))
 {
 m_dst._position.Relocate(transport);
 m_dst._position.RelocateOffset(m_dst._transportOffset);
 }
 }
}
 
SpellValue::SpellValue(SpellInfo const* proto, WorldObject const* caster)
{
 memset(EffectBasePoints, 0, sizeof(EffectBasePoints));
 for (SpellEffectInfo const& spellEffectInfo : proto->GetEffects())
 EffectBasePoints[spellEffectInfo.EffectIndex] = spellEffectInfo.CalcBaseValue(caster, nullptr, 0, -1);
 
 CustomBasePointsMask = 0;
 MaxAffectedTargets = proto->MaxAffectedTargets;
 RadiusMod = 1.0f;
 AuraStackAmount = 1;
 CriticalChance = 0.0f;
 DurationMul = 1;
}
 
class TC_GAME_API SpellEvent : public BasicEvent
{
public:
 explicit SpellEvent(Spell* spell);
 ~SpellEvent();
 
 bool Execute(uint64 e_time, uint32 p_time) override;
 void Abort(uint64 e_time) override;
 bool IsDeletable() const override;
 Spell const* GetSpell() const { return m_Spell.get(); }
 Trinity::unique_weak_ptr<Spell> GetSpellWeakPtr() const { return m_Spell; }
 
 std::string GetDebugInfo() const { return m_Spell->GetDebugInfo(); }
 
protected:
 Trinity::unique_trackable_ptr<Spell> m_Spell;
};
 
Spell::Spell(WorldObject* caster, SpellInfo const* info, TriggerCastFlags triggerFlags, ObjectGuid originalCasterGUID /*= ObjectGuid::Empty*/,
 ObjectGuid originalCastId /*= ObjectGuid::Empty*/) :
m_spellInfo(info), m_caster((info->HasAttribute(SPELL_ATTR6_ORIGINATE_FROM_CONTROLLER) && caster->GetCharmerOrOwner()) ? caster->GetCharmerOrOwner() : caster),
m_spellValue(new SpellValue(m_spellInfo, caster)), _spellEvent(nullptr)
{
 m_customError = SPELL_CUSTOM_ERROR_NONE;
 m_fromClient = false;
 m_selfContainer = nullptr;
 m_referencedFromCurrentSpell = false;
 m_executedCurrently = false;
 m_delayStart = 0;
 m_delayAtDamageCount = 0;
 
 m_applyMultiplierMask = 0;
 memset(m_damageMultipliers, 0, sizeof(m_damageMultipliers));
 
 // Get data for type of attack
 m_attackType = info->GetAttackType();
 
 m_spellSchoolMask = info->GetSchoolMask(); // Can be override for some spell (wand shoot for example)
 
 if (Player const* playerCaster = m_caster->ToPlayer())
 {
 // wand case
 if (m_attackType == RANGED_ATTACK)
 if ((playerCaster->GetClassMask() & CLASSMASK_WAND_USERS) != 0)
 if (Item* pItem = playerCaster->GetWeaponForAttack(RANGED_ATTACK))
 m_spellSchoolMask = SpellSchoolMask(1 << pItem->GetTemplate()->GetDamageType());
 }
 
 if (Player const* modOwner = caster->GetSpellModOwner())
 modOwner->ApplySpellMod(info, SpellModOp::Doses, m_spellValue->AuraStackAmount, this);
 
 if (!originalCasterGUID.IsEmpty())
 m_originalCasterGUID = originalCasterGUID;
 else
 m_originalCasterGUID = m_caster->GetGUID();
 
 if (m_originalCasterGUID == m_caster->GetGUID())
 m_originalCaster = m_caster->ToUnit();
 else
 {
 m_originalCaster = ObjectAccessor::GetUnit(*m_caster, m_originalCasterGUID);
 if (m_originalCaster && !m_originalCaster->IsInWorld())
 m_originalCaster = nullptr;
 }
 
 m_spellState = SPELL_STATE_NULL;
 _triggeredCastFlags = triggerFlags;
 
 if (info->HasAttribute(SPELL_ATTR2_DO_NOT_REPORT_SPELL_FAILURE))
 _triggeredCastFlags |= TRIGGERED_DONT_REPORT_CAST_ERROR;
 
 if (info->HasAttribute(SPELL_ATTR4_ALLOW_CAST_WHILE_CASTING))
 _triggeredCastFlags |= TRIGGERED_IGNORE_CAST_IN_PROGRESS;
 
 m_CastItem = nullptr;
 m_castItemGUID.Clear();
 m_castItemEntry = 0;
 m_castItemLevel = -1;
 m_castFlagsEx = 0;
 
 if (IsIgnoringCooldowns())
 m_castFlagsEx |= CAST_FLAG_EX_IGNORE_COOLDOWN;
 
 unitTarget = nullptr;
 itemTarget = nullptr;
 gameObjTarget = nullptr;
 m_corpseTarget = nullptr;
 destTarget = nullptr;
 damage = 0;
 targetMissInfo = SPELL_MISS_NONE;
 variance = 0.0f;
 effectHandleMode = SPELL_EFFECT_HANDLE_LAUNCH;
 effectInfo = nullptr;
 m_damage = 0;
 m_healing = 0;
 m_hitMask = PROC_HIT_NONE;
 m_procSpellType = PROC_SPELL_TYPE_NONE;
 focusObject = nullptr;
 m_castId = ObjectGuid::Create<HighGuid::Cast>(SPELL_CAST_SOURCE_NORMAL, m_caster->GetMapId(), m_spellInfo->Id, m_caster->GetMap()->GenerateLowGuid<HighGuid::Cast>());
 m_originalCastId = originalCastId;
 memset(m_misc.Raw.Data, 0, sizeof(m_misc.Raw.Data));
 m_SpellVisual.SpellXSpellVisualID = caster->GetCastSpellXSpellVisualId(m_spellInfo);
 m_triggeredByAuraSpell = nullptr;
 m_procChainLength = caster->IsUnit() ? caster->ToUnit()->GetProcChainLength() : 0;
 _spellAura = nullptr;
 _dynObjAura = nullptr;
 
 //Auto Shot & Shoot (wand)
 m_autoRepeat = m_spellInfo->IsAutoRepeatRangedSpell();
 
 m_runesState = 0;
 m_casttime = 0; // setup to correct value in Spell::prepare, must not be used before.
 m_timer = 0; // will set to castime in prepare
 m_channeledDuration = 0; // will be setup in Spell::handle_immediate
 m_launchHandled = false;
 m_immediateHandled = false;
 
 m_channelTargetEffectMask = 0;
 
 // Determine if spell can be reflected back to the caster
 // Patch 1.2 notes: Spell Reflection no longer reflects abilities
 m_canReflect = caster->IsUnit()
 && ((m_spellInfo->DmgClass == SPELL_DAMAGE_CLASS_MAGIC && !m_spellInfo->HasAttribute(SPELL_ATTR0_IS_ABILITY)) || m_spellInfo->HasAttribute(SPELL_ATTR7_ALLOW_SPELL_REFLECTION))
 && !m_spellInfo->HasAttribute(SPELL_ATTR1_NO_REFLECTION) && !m_spellInfo->HasAttribute(SPELL_ATTR0_NO_IMMUNITIES)
 && !m_spellInfo->IsPassive();
 
 CleanupTargetList();
 
 for (uint8 i = 0; i < MAX_SPELL_EFFECTS; ++i)
 m_destTargets[i] = SpellDestination(*m_caster);
}
 
Spell::~Spell()
{
 // unload scripts
 for (auto itr = m_loadedScripts.begin(); itr != m_loadedScripts.end(); ++itr)
 {
 (*itr)->_Unload();
 delete (*itr);
 }
 
 if (m_referencedFromCurrentSpell && m_selfContainer && *m_selfContainer == this)
 {
 // Clean the reference to avoid later crash.
 // If this error is repeating, we may have to add an ASSERT to better track down how we get into this case.
 TC_LOG_ERROR("spells", "SPELL: deleting spell for spell ID {}. However, spell still referenced.", m_spellInfo->Id);
 *m_selfContainer = nullptr;
 }
 
 if (m_caster && m_caster->GetTypeId() == TYPEID_PLAYER)
 ASSERT(m_caster->ToPlayer()->m_spellModTakingSpell != this);
 
 delete m_spellValue;
}
 
void Spell::InitExplicitTargets(SpellCastTargets const& targets)
{
 m_targets = targets;
 
 // this function tries to correct spell explicit targets for spell
 // client doesn't send explicit targets correctly sometimes - we need to fix such spells serverside
 // this also makes sure that we correctly send explicit targets to client (removes redundant data)
 uint32 neededTargets = m_spellInfo->GetExplicitTargetMask();
 
 if (WorldObject* target = m_targets.GetObjectTarget())
 {
 // check if object target is valid with needed target flags
 // for unit case allow corpse target mask because player with not released corpse is a unit target
 if ((target->ToUnit() && !(neededTargets & (TARGET_FLAG_UNIT_MASK | TARGET_FLAG_CORPSE_MASK)))
 || (target->ToGameObject() && !(neededTargets & TARGET_FLAG_GAMEOBJECT_MASK))
 || (target->ToCorpse() && !(neededTargets & TARGET_FLAG_CORPSE_MASK)))
 m_targets.RemoveObjectTarget();
 }
 else
 {
 // try to select correct unit target if not provided by client or by serverside cast
 if (neededTargets & (TARGET_FLAG_UNIT_MASK))
 {
 Unit* unit = nullptr;
 // try to use player selection as a target
 if (Player* playerCaster = m_caster->ToPlayer())
 {
 // selection has to be found and to be valid target for the spell
 if (Unit* selectedUnit = ObjectAccessor::GetUnit(*m_caster, playerCaster->GetTarget()))
 if (m_spellInfo->CheckExplicitTarget(m_caster, selectedUnit) == SPELL_CAST_OK)
 unit = selectedUnit;
 }
 // try to use attacked unit as a target
 else if ((m_caster->GetTypeId() == TYPEID_UNIT) && neededTargets & (TARGET_FLAG_UNIT_ENEMY | TARGET_FLAG_UNIT))
 unit = m_caster->ToUnit()->GetVictim();
 
 // didn't find anything - let's use self as target
 if (!unit && neededTargets & (TARGET_FLAG_UNIT_RAID | TARGET_FLAG_UNIT_PARTY | TARGET_FLAG_UNIT_ALLY))
 unit = m_caster->ToUnit();
 
 m_targets.SetUnitTarget(unit);
 }
 }
 
 // check if spell needs dst target
 if (neededTargets & TARGET_FLAG_DEST_LOCATION)
 {
 // and target isn't set
 if (!m_targets.HasDst())
 {
 // try to use unit target if provided
 if (WorldObject* target = targets.GetObjectTarget())
 m_targets.SetDst(*target);
 // or use self if not available
 else
 m_targets.SetDst(*m_caster);
 }
 }
 else
 m_targets.RemoveDst();
 
 if (neededTargets & TARGET_FLAG_SOURCE_LOCATION)
 {
 if (!targets.HasSrc())
 m_targets.SetSrc(*m_caster);
 }
 else
 m_targets.RemoveSrc();
}
 
void Spell::SelectExplicitTargets()
{
 // here go all explicit target changes made to explicit targets after spell prepare phase is finished
 if (Unit* target = m_targets.GetUnitTarget())
 {
 // check for explicit target redirection, for Grounding Totem for example
 if ((m_spellInfo->GetExplicitTargetMask() & TARGET_FLAG_UNIT_ENEMY) ||
 ((m_spellInfo->GetExplicitTargetMask() & TARGET_FLAG_UNIT) && !m_caster->IsFriendlyTo(target)))
 {
 Unit* redirect = nullptr;
 switch (m_spellInfo->DmgClass)
 {
 case SPELL_DAMAGE_CLASS_MAGIC:
 redirect = m_caster->GetMagicHitRedirectTarget(target, m_spellInfo);
 break;
 case SPELL_DAMAGE_CLASS_MELEE:
 case SPELL_DAMAGE_CLASS_RANGED:
 // should gameobjects cast damagetype melee/ranged spells this needs to be changed
 redirect = ASSERT_NOTNULL(m_caster->ToUnit())->GetMeleeHitRedirectTarget(target, m_spellInfo);
 break;
 default:
 break;
 }
 if (redirect && (redirect != target))
 m_targets.SetUnitTarget(redirect);
 }
 }
}
 
void Spell::SelectSpellTargets()
{
 // select targets for cast phase
 SelectExplicitTargets();
 
 uint32 processedAreaEffectsMask = 0;
 
 for (SpellEffectInfo const& spellEffectInfo : m_spellInfo->GetEffects())
 {
 // not call for empty effect.
 // Also some spells use not used effect targets for store targets for dummy effect in triggered spells
 if (!spellEffectInfo.IsEffect())
 continue;
 
 // set expected type of implicit targets to be sent to client
 uint32 implicitTargetMask = GetTargetFlagMask(spellEffectInfo.TargetA.GetObjectType()) | GetTargetFlagMask(spellEffectInfo.TargetB.GetObjectType());
 if (implicitTargetMask & TARGET_FLAG_UNIT)
 m_targets.SetTargetFlag(TARGET_FLAG_UNIT);
 if (implicitTargetMask & (TARGET_FLAG_GAMEOBJECT | TARGET_FLAG_GAMEOBJECT_ITEM))
 m_targets.SetTargetFlag(TARGET_FLAG_GAMEOBJECT);
 
 SelectEffectImplicitTargets(spellEffectInfo, spellEffectInfo.TargetA, SpellTargetIndex::TargetA, processedAreaEffectsMask);
 SelectEffectImplicitTargets(spellEffectInfo, spellEffectInfo.TargetB, SpellTargetIndex::TargetB, processedAreaEffectsMask);
 
 // Select targets of effect based on effect type
 // those are used when no valid target could be added for spell effect based on spell target type
 // some spell effects use explicit target as a default target added to target map (like SPELL_EFFECT_LEARN_SPELL)
 // some spell effects add target to target map only when target type specified (like SPELL_EFFECT_WEAPON)
 // some spell effects don't add anything to target map (confirmed with sniffs) (like SPELL_EFFECT_DESTROY_ALL_TOTEMS)
 SelectEffectTypeImplicitTargets(spellEffectInfo);
 
 if (m_targets.HasDst())
 AddDestTarget(*m_targets.GetDst(), spellEffectInfo.EffectIndex);
 
 if (spellEffectInfo.TargetA.GetObjectType() == TARGET_OBJECT_TYPE_UNIT
 || spellEffectInfo.TargetA.GetObjectType() == TARGET_OBJECT_TYPE_UNIT_AND_DEST
 || spellEffectInfo.TargetB.GetObjectType() == TARGET_OBJECT_TYPE_UNIT
 || spellEffectInfo.TargetB.GetObjectType() == TARGET_OBJECT_TYPE_UNIT_AND_DEST)
 {
 if (m_spellInfo->HasAttribute(SPELL_ATTR1_REQUIRE_ALL_TARGETS))
 {
 bool noTargetFound = std::none_of(m_UniqueTargetInfo.begin(), m_UniqueTargetInfo.end(), [effectMask = 1u << spellEffectInfo.EffectIndex](TargetInfo const& target)
 {
 return target.EffectMask & effectMask;
 });
 
 if (noTargetFound)
 {
 SendCastResult(SPELL_FAILED_BAD_IMPLICIT_TARGETS);
 finish(SPELL_FAILED_BAD_IMPLICIT_TARGETS);
 return;
 }
 }
 if (m_spellInfo->HasAttribute(SPELL_ATTR2_FAIL_ON_ALL_TARGETS_IMMUNE))
 {
 bool anyNonImmuneTargetFound = std::any_of(m_UniqueTargetInfo.begin(), m_UniqueTargetInfo.end(), [effectMask = 1u << spellEffectInfo.EffectIndex](TargetInfo const& target)
 {
 return target.EffectMask & effectMask && target.MissCondition != SPELL_MISS_IMMUNE && target.MissCondition != SPELL_MISS_IMMUNE2;
 });
 
 if (!anyNonImmuneTargetFound)
 {
 SendCastResult(SPELL_FAILED_IMMUNE);
 finish(SPELL_FAILED_IMMUNE);
 return;
 }
 }
 }
 
 if (m_spellInfo->IsChanneled())
 {
 // maybe do this for all spells?
 if (!focusObject && m_UniqueTargetInfo.empty() && m_UniqueGOTargetInfo.empty() && m_UniqueItemInfo.empty() && !m_targets.HasDst())
 {
 SendCastResult(SPELL_FAILED_BAD_IMPLICIT_TARGETS);
 finish(SPELL_FAILED_BAD_IMPLICIT_TARGETS);
 return;
 }
 
 uint32 mask = (1 << spellEffectInfo.EffectIndex);
 for (auto ihit = m_UniqueTargetInfo.begin(); ihit != m_UniqueTargetInfo.end(); ++ihit)
 {
 if (ihit->EffectMask & mask)
 {
 m_channelTargetEffectMask |= mask;
 break;
 }
 }
 }
 }
 
 if (m_targets.HasDst())
 {
 if (m_spellInfo->HasAttribute(SPELL_ATTR8_REQUIRES_LOCATION_TO_BE_ON_LIQUID_SURFACE))
 {
 ZLiquidStatus status = m_caster->GetMap()->GetLiquidStatus(m_caster->GetPhaseShift(),
 m_targets.GetDstPos()->GetPositionX(), m_targets.GetDstPos()->GetPositionY(), m_targets.GetDstPos()->GetPositionZ());
 if (!(status & (LIQUID_MAP_WATER_WALK | LIQUID_MAP_IN_WATER)))
 {
 SendCastResult(SPELL_FAILED_NO_LIQUID);
 finish(SPELL_FAILED_NO_LIQUID);
 return;
 }
 }
 }
 
 if (uint64 dstDelay = CalculateDelayMomentForDst(m_spellInfo->LaunchDelay))
 m_delayMoment = dstDelay;
}
 
uint64 Spell::CalculateDelayMomentForDst(float launchDelay) const
{
 if (m_targets.HasDst())
 {
 if (m_targets.HasTraj())
 {
 float speed = m_targets.GetSpeedXY();
 if (speed > 0.0f)
 return uint64(std::floor((m_targets.GetDist2d() / speed + launchDelay) * 1000.0f));
 }
 else if (m_spellInfo->HasAttribute(SPELL_ATTR9_SPECIAL_DELAY_CALCULATION))
 return uint64(std::floor((m_spellInfo->Speed + launchDelay) * 1000.0f));
 else if (m_spellInfo->Speed > 0.0f)
 {
 // We should not subtract caster size from dist calculation (fixes execution time desync with animation on client, eg. Malleable Goo cast by PP)
 float dist = m_caster->GetExactDist(*m_targets.GetDstPos());
 return uint64(std::floor((dist / m_spellInfo->Speed + launchDelay) * 1000.0f));
 }
 
 return uint64(std::floor(launchDelay * 1000.0f));
 }
 
 return 0;
}
 
void Spell::RecalculateDelayMomentForDst()
{
 UpdateDelayMomentForDst(CalculateDelayMomentForDst(0.0f));
}
 
void Spell::UpdateDelayMomentForDst(uint64 hitDelay)
{
 m_delayMoment = hitDelay;
 
 if (GetDelayStart())
 m_caster->m_Events.ModifyEventTime(_spellEvent, Milliseconds(GetDelayStart() + m_delayMoment));
}
 
void Spell::UpdateDelayMomentForUnitTarget(Unit* unit, uint64 hitDelay)
{
 auto itr = std::find_if(m_UniqueTargetInfo.begin(), m_UniqueTargetInfo.end(), [unit](Spell::TargetInfo const& targetInfo)
 {
 return targetInfo.TargetGUID == unit->GetGUID();
 });
 
 uint64 oldDelay = itr->TimeDelay;
 itr->TimeDelay = hitDelay;
 
 if (hitDelay && (!m_delayMoment || m_delayMoment > hitDelay))
 m_delayMoment = hitDelay;
 else if (m_delayMoment && oldDelay < hitDelay)
 {
 // if new hit delay is greater than old delay for this target we must check all other spell targets to see if m_delayMoment can be increased
 auto minDelayTargetItr = std::min_element(m_UniqueTargetInfo.begin(), m_UniqueTargetInfo.end(), [](Spell::TargetInfo const& itr, Spell::TargetInfo const& smallest)
 {
 return itr.TimeDelay && itr.TimeDelay < smallest.TimeDelay;
 });
 
 m_delayMoment = minDelayTargetItr->TimeDelay;
 }
 
 if (GetDelayStart())
 m_caster->m_Events.ModifyEventTime(_spellEvent, Milliseconds(GetDelayStart() + m_delayMoment));
}
 
void Spell::SelectEffectImplicitTargets(SpellEffectInfo const& spellEffectInfo, SpellImplicitTargetInfo const& targetType, SpellTargetIndex targetIndex, uint32& processedEffectMask)
{
 if (!targetType.GetTarget())
 return;
 
 uint32 effectMask = 1 << spellEffectInfo.EffectIndex;
 // set the same target list for all effects
 // some spells appear to need this, however this requires more research
 switch (targetType.GetSelectionCategory())
 {
 case TARGET_SELECT_CATEGORY_NEARBY:
 case TARGET_SELECT_CATEGORY_CONE:
 case TARGET_SELECT_CATEGORY_AREA:
 case TARGET_SELECT_CATEGORY_LINE:
 {
 // targets for effect already selected
 if (effectMask & processedEffectMask)
 return;
 std::vector<SpellEffectInfo> const& effects = GetSpellInfo()->GetEffects();
 // choose which targets we can select at once
 for (uint32 j = spellEffectInfo.EffectIndex + 1; j < effects.size(); ++j)
 {
 if (effects[j].IsEffect() &&
 spellEffectInfo.TargetA.GetTarget() == effects[j].TargetA.GetTarget() &&
 spellEffectInfo.TargetB.GetTarget() == effects[j].TargetB.GetTarget() &&
 spellEffectInfo.ImplicitTargetConditions == effects[j].ImplicitTargetConditions &&
 spellEffectInfo.CalcRadius(m_caster, SpellTargetIndex::TargetA) == effects[j].CalcRadius(m_caster, SpellTargetIndex::TargetA) &&
 spellEffectInfo.CalcRadius(m_caster, SpellTargetIndex::TargetB) == effects[j].CalcRadius(m_caster, SpellTargetIndex::TargetB) &&
 spellEffectInfo.EffectAttributes.HasFlag(SpellEffectAttributes::PlayersOnly) == effects[j].EffectAttributes.HasFlag(SpellEffectAttributes::PlayersOnly) &&
 CheckScriptEffectImplicitTargets(spellEffectInfo.EffectIndex, j))
 {
 effectMask |= 1 << j;
 }
 }
 processedEffectMask |= effectMask;
 break;
 }
 default:
 break;
 }
 
 switch (targetType.GetSelectionCategory())
 {
 case TARGET_SELECT_CATEGORY_CHANNEL:
 SelectImplicitChannelTargets(spellEffectInfo, targetType);
 break;
 case TARGET_SELECT_CATEGORY_NEARBY:
 SelectImplicitNearbyTargets(spellEffectInfo, targetType, targetIndex, effectMask);
 break;
 case TARGET_SELECT_CATEGORY_CONE:
 SelectImplicitConeTargets(spellEffectInfo, targetType, targetIndex, effectMask);
 break;
 case TARGET_SELECT_CATEGORY_AREA:
 SelectImplicitAreaTargets(spellEffectInfo, targetType, targetIndex, effectMask);
 break;
 case TARGET_SELECT_CATEGORY_TRAJ:
 // just in case there is no dest, explanation in SelectImplicitDestDestTargets
 CheckDst();
 
 SelectImplicitTrajTargets(spellEffectInfo, targetType);
 break;
 case TARGET_SELECT_CATEGORY_LINE:
 SelectImplicitLineTargets(spellEffectInfo, targetType, targetIndex, effectMask);
 break;
 case TARGET_SELECT_CATEGORY_DEFAULT:
 switch (targetType.GetObjectType())
 {
 case TARGET_OBJECT_TYPE_SRC:
 switch (targetType.GetReferenceType())
 {
 case TARGET_REFERENCE_TYPE_CASTER:
 m_targets.SetSrc(*m_caster);
 break;
 default:
 ABORT_MSG("Spell::SelectEffectImplicitTargets: received not implemented select target reference type for TARGET_TYPE_OBJECT_SRC");
 break;
 }
 break;
 case TARGET_OBJECT_TYPE_DEST:
 switch (targetType.GetReferenceType())
 {
 case TARGET_REFERENCE_TYPE_CASTER:
 SelectImplicitCasterDestTargets(spellEffectInfo, targetType, targetIndex);
 break;
 case TARGET_REFERENCE_TYPE_TARGET:
 SelectImplicitTargetDestTargets(spellEffectInfo, targetType, targetIndex);
 break;
 case TARGET_REFERENCE_TYPE_DEST:
 SelectImplicitDestDestTargets(spellEffectInfo, targetType, targetIndex);
 break;
 default:
 ABORT_MSG("Spell::SelectEffectImplicitTargets: received not implemented select target reference type for TARGET_TYPE_OBJECT_DEST");
 break;
 }
 break;
 default:
 switch (targetType.GetReferenceType())
 {
 case TARGET_REFERENCE_TYPE_CASTER:
 SelectImplicitCasterObjectTargets(spellEffectInfo, targetType);
 break;
 case TARGET_REFERENCE_TYPE_TARGET:
 SelectImplicitTargetObjectTargets(spellEffectInfo, targetType);
 break;
 default:
 ABORT_MSG("Spell::SelectEffectImplicitTargets: received not implemented select target reference type for TARGET_TYPE_OBJECT");
 break;
 }
 break;
 }
 break;
 case TARGET_SELECT_CATEGORY_NYI:
 TC_LOG_DEBUG("spells", "SPELL: target type {}, found in spellID {}, effect {} is not implemented yet!", m_spellInfo->Id, uint32(spellEffectInfo.EffectIndex), targetType.GetTarget());
 break;
 default:
 ABORT_MSG("Spell::SelectEffectImplicitTargets: received not implemented select target category");
 break;
 }
}
 
void Spell::SelectImplicitChannelTargets(SpellEffectInfo const& spellEffectInfo, SpellImplicitTargetInfo const& targetType)
{
 if (targetType.GetReferenceType() != TARGET_REFERENCE_TYPE_CASTER)
 {
 ABORT_MSG("Spell::SelectImplicitChannelTargets: received not implemented target reference type");
 return;
 }
 
 Spell* channeledSpell = m_originalCaster->GetCurrentSpell(CURRENT_CHANNELED_SPELL);
 if (!channeledSpell)
 {
 TC_LOG_DEBUG("spells", "Spell::SelectImplicitChannelTargets: cannot find channel spell for spell ID {}, effect {}", m_spellInfo->Id, uint32(spellEffectInfo.EffectIndex));
 return;
 }
 switch (targetType.GetTarget())
 {
 case TARGET_UNIT_CHANNEL_TARGET:
 {
 for (ObjectGuid const& channelTarget : m_originalCaster->m_unitData->ChannelObjects)
 {
 WorldObject* target = ObjectAccessor::GetUnit(*m_caster, channelTarget);
 CallScriptObjectTargetSelectHandlers(target, spellEffectInfo.EffectIndex, targetType);
 // unit target may be no longer avalible - teleported out of map for example
 Unit* unitTarget = target ? target->ToUnit() : nullptr;
 if (unitTarget)
 AddUnitTarget(unitTarget, 1 << spellEffectInfo.EffectIndex);
 else
 TC_LOG_DEBUG("spells", "SPELL: cannot find channel spell target for spell ID {}, effect {}", m_spellInfo->Id, uint32(spellEffectInfo.EffectIndex));
 }
 break;
 }
 case TARGET_DEST_CHANNEL_TARGET:
 if (channeledSpell->m_targets.HasDst())
 m_targets.SetDst(channeledSpell->m_targets);
 else
 {
 auto const& channelObjects = m_originalCaster->m_unitData->ChannelObjects;
 WorldObject* target = !channelObjects.empty() ? ObjectAccessor::GetWorldObject(*m_caster, *channelObjects.begin()) : nullptr;
 if (target)
 {
 CallScriptObjectTargetSelectHandlers(target, spellEffectInfo.EffectIndex, targetType);
 if (target)
 {
 SpellDestination dest(*target);
 if (m_spellInfo->HasAttribute(SPELL_ATTR4_USE_FACING_FROM_SPELL))
 dest._position.SetOrientation(spellEffectInfo.PositionFacing);
 
 CallScriptDestinationTargetSelectHandlers(dest, spellEffectInfo.EffectIndex, targetType);
 m_targets.SetDst(dest);
 }
 }
 else
 TC_LOG_DEBUG("spells", "SPELL: cannot find channel spell destination for spell ID {}, effect {}", m_spellInfo->Id, uint32(spellEffectInfo.EffectIndex));
 }
 break;
 case TARGET_DEST_CHANNEL_CASTER:
 {
 SpellDestination dest(*channeledSpell->GetCaster());
 if (m_spellInfo->HasAttribute(SPELL_ATTR4_USE_FACING_FROM_SPELL))
 dest._position.SetOrientation(spellEffectInfo.PositionFacing);
 
 CallScriptDestinationTargetSelectHandlers(dest, spellEffectInfo.EffectIndex, targetType);
 m_targets.SetDst(dest);
 break;
 }
 default:
 ABORT_MSG("Spell::SelectImplicitChannelTargets: received not implemented target type");
 break;
 }
}
 
void Spell::SelectImplicitNearbyTargets(SpellEffectInfo const& spellEffectInfo, SpellImplicitTargetInfo const& targetType, SpellTargetIndex targetIndex, uint32 effMask)
{
 if (targetType.GetReferenceType() != TARGET_REFERENCE_TYPE_CASTER)
 {
 ABORT_MSG("Spell::SelectImplicitNearbyTargets: received not implemented target reference type");
 return;
 }
 
 float range = 0.0f;
 switch (targetType.GetCheckType())
 {
 case TARGET_CHECK_ENEMY:
 range = m_spellInfo->GetMaxRange(false, m_caster, this);
 break;
 case TARGET_CHECK_ALLY:
 case TARGET_CHECK_PARTY:
 case TARGET_CHECK_RAID:
 case TARGET_CHECK_RAID_CLASS:
 range = m_spellInfo->GetMaxRange(true, m_caster, this);
 break;
 case TARGET_CHECK_ENTRY:
 case TARGET_CHECK_DEFAULT:
 range = m_spellInfo->GetMaxRange(IsPositive(), m_caster, this);
 break;
 default:
 ABORT_MSG("Spell::SelectImplicitNearbyTargets: received not implemented selection check type");
 break;
 }
 
 ConditionContainer* condList = spellEffectInfo.ImplicitTargetConditions.get();
 
 // handle emergency case - try to use other provided targets if no conditions provided
 if (targetType.GetCheckType() == TARGET_CHECK_ENTRY && (!condList || condList->empty()))
 {
 TC_LOG_DEBUG("spells", "Spell::SelectImplicitNearbyTargets: no conditions entry for target with TARGET_CHECK_ENTRY of spell ID {}, effect {} - selecting default targets", m_spellInfo->Id, uint32(spellEffectInfo.EffectIndex));
 switch (targetType.GetObjectType())
 {
 case TARGET_OBJECT_TYPE_GOBJ:
 if (m_spellInfo->RequiresSpellFocus)
 {
 if (focusObject)
 AddGOTarget(focusObject, effMask);
 else
 {
 SendCastResult(SPELL_FAILED_BAD_IMPLICIT_TARGETS);
 finish(SPELL_FAILED_BAD_IMPLICIT_TARGETS);
 }
 return;
 }
 break;
 case TARGET_OBJECT_TYPE_DEST:
 if (m_spellInfo->RequiresSpellFocus)
 {
 if (focusObject)
 {
 SpellDestination dest(*focusObject);
 if (m_spellInfo->HasAttribute(SPELL_ATTR4_USE_FACING_FROM_SPELL))
 dest._position.SetOrientation(spellEffectInfo.PositionFacing);
 
 CallScriptDestinationTargetSelectHandlers(dest, spellEffectInfo.EffectIndex, targetType);
 m_targets.SetDst(dest);
 }
 else
 {
 SendCastResult(SPELL_FAILED_BAD_IMPLICIT_TARGETS);
 finish(SPELL_FAILED_BAD_IMPLICIT_TARGETS);
 }
 return;
 }
 if (targetType.GetTarget() == TARGET_DEST_NEARBY_ENTRY_OR_DB)
 {
 if (SpellTargetPosition const* st = sSpellMgr->GetSpellTargetPosition(m_spellInfo->Id, spellEffectInfo.EffectIndex))
 {
 SpellDestination dest(*m_caster);
 if (st->target_mapId == m_caster->GetMapId() && m_caster->IsInDist(st->target_X, st->target_Y, st->target_Z, range))
 dest = SpellDestination(st->target_X, st->target_Y, st->target_Z, st->target_Orientation);
 else
 {
 float randomRadius = spellEffectInfo.CalcRadius(m_caster, targetIndex);
 if (randomRadius > 0.0f)
 m_caster->MovePositionToFirstCollision(dest._position, randomRadius, targetType.CalcDirectionAngle());
 }
 
 CallScriptDestinationTargetSelectHandlers(dest, spellEffectInfo.EffectIndex, targetType);
 m_targets.SetDst(dest);
 return;
 }
 }
 break;
 default:
 break;
 }
 }
 
 WorldObject* target = SearchNearbyTarget(spellEffectInfo, range, targetType.GetObjectType(), targetType.GetCheckType(), condList);
 float randomRadius = 0.0f;
 switch (targetType.GetTarget())
 {
 case TARGET_DEST_NEARBY_ENTRY_OR_DB:
 // if we are here then there was no db target
 if (!target)
 {
 target = m_caster;
 // radius is only meant to be randomized when using caster fallback
 randomRadius = spellEffectInfo.CalcRadius(m_caster, targetIndex);
 }
 break;
 default:
 break;
 }
 
 if (!target)
 {
 TC_LOG_DEBUG("spells", "Spell::SelectImplicitNearbyTargets: cannot find nearby target for spell ID {}, effect {}", m_spellInfo->Id, uint32(spellEffectInfo.EffectIndex));
 SendCastResult(SPELL_FAILED_BAD_IMPLICIT_TARGETS);
 finish(SPELL_FAILED_BAD_IMPLICIT_TARGETS);
 return;
 }
 
 CallScriptObjectTargetSelectHandlers(target, spellEffectInfo.EffectIndex, targetType);
 if (!target)
 {
 TC_LOG_DEBUG("spells", "Spell::SelectImplicitNearbyTargets: OnObjectTargetSelect script hook for spell Id {} set NULL target, effect {}", m_spellInfo->Id, uint32(spellEffectInfo.EffectIndex));
 SendCastResult(SPELL_FAILED_BAD_IMPLICIT_TARGETS);
 finish(SPELL_FAILED_BAD_IMPLICIT_TARGETS);
 return;
 }
 
 switch (targetType.GetObjectType())
 {
 case TARGET_OBJECT_TYPE_UNIT:
 if (Unit* unit = target->ToUnit())
 AddUnitTarget(unit, effMask, true, false);
 else
 {
 TC_LOG_DEBUG("spells", "Spell::SelectImplicitNearbyTargets: OnObjectTargetSelect script hook for spell Id {} set object of wrong type, expected unit, got {}, effect {}", m_spellInfo->Id, target->GetGUID().GetTypeName(), effMask);
 SendCastResult(SPELL_FAILED_BAD_IMPLICIT_TARGETS);
 finish(SPELL_FAILED_BAD_IMPLICIT_TARGETS);
 return;
 }
 break;
 case TARGET_OBJECT_TYPE_GOBJ:
 if (GameObject* gobjTarget = target->ToGameObject())
 AddGOTarget(gobjTarget, effMask);
 else
 {
 TC_LOG_DEBUG("spells", "Spell::SelectImplicitNearbyTargets: OnObjectTargetSelect script hook for spell Id {} set object of wrong type, expected gameobject, got {}, effect {}", m_spellInfo->Id, target->GetGUID().GetTypeName(), effMask);
 SendCastResult(SPELL_FAILED_BAD_IMPLICIT_TARGETS);
 finish(SPELL_FAILED_BAD_IMPLICIT_TARGETS);
 return;
 }
 break;
 case TARGET_OBJECT_TYPE_CORPSE:
 if (Corpse* corpseTarget = target->ToCorpse())
 AddCorpseTarget(corpseTarget, effMask);
 else
 {
 TC_LOG_DEBUG("spells", "Spell::SelectImplicitNearbyTargets: OnObjectTargetSelect script hook for spell Id {} set object of wrong type, expected corpse, got {}, effect {}", m_spellInfo->Id, target->GetGUID().GetTypeName(), effMask);
 SendCastResult(SPELL_FAILED_BAD_IMPLICIT_TARGETS);
 finish(SPELL_FAILED_BAD_IMPLICIT_TARGETS);
 return;
 }
 break;
 case TARGET_OBJECT_TYPE_DEST:
 {
 SpellDestination dest(*target);
 if (randomRadius > 0.0f)
 target->MovePositionToFirstCollision(dest._position, randomRadius, targetType.CalcDirectionAngle());
 
 if (m_spellInfo->HasAttribute(SPELL_ATTR4_USE_FACING_FROM_SPELL))
 dest._position.SetOrientation(spellEffectInfo.PositionFacing);
 
 CallScriptDestinationTargetSelectHandlers(dest, spellEffectInfo.EffectIndex, targetType);
 m_targets.SetDst(dest);
 break;
 }
 default:
 ABORT_MSG("Spell::SelectImplicitNearbyTargets: received not implemented target object type");
 break;
 }
 
 SelectImplicitChainTargets(spellEffectInfo, targetType, target, effMask);
}
 
void Spell::SelectImplicitConeTargets(SpellEffectInfo const& spellEffectInfo, SpellImplicitTargetInfo const& targetType, SpellTargetIndex targetIndex, uint32 effMask)
{
 Position coneSrc(*m_caster);
 float coneAngle = m_spellInfo->ConeAngle;
 switch (targetType.GetReferenceType())
 {
 case TARGET_REFERENCE_TYPE_CASTER:
 break;
 case TARGET_REFERENCE_TYPE_DEST:
 if (m_caster->GetExactDist2d(m_targets.GetDstPos()) > 0.1f)
 coneSrc.SetOrientation(m_caster->GetAbsoluteAngle(m_targets.GetDstPos()));
 break;
 default:
 break;
 }
 
 switch (targetType.GetTarget())
 {
 case TARGET_UNIT_CONE_180_DEG_ENEMY:
 if (coneAngle == 0.0f)
 coneAngle = 180.0f;
 break;
 default:
 break;
 }
 
 std::list<WorldObject*> targets;
 SpellTargetObjectTypes objectType = targetType.GetObjectType();
 SpellTargetCheckTypes selectionType = targetType.GetCheckType();
 ConditionContainer* condList = spellEffectInfo.ImplicitTargetConditions.get();
 float radius = spellEffectInfo.CalcRadius(m_caster, targetIndex) * m_spellValue->RadiusMod;
 
 if (uint32 containerTypeMask = GetSearcherTypeMask(m_spellInfo, spellEffectInfo, objectType, condList))
 {
 float extraSearchRadius = radius > 0.0f ? EXTRA_CELL_SEARCH_RADIUS : 0.0f;
 Trinity::WorldObjectSpellConeTargetCheck check(coneSrc, DegToRad(coneAngle), m_spellInfo->Width ? m_spellInfo->Width : m_caster->GetCombatReach(), radius, m_caster, m_spellInfo, selectionType, condList, objectType);
 Trinity::WorldObjectListSearcher<Trinity::WorldObjectSpellConeTargetCheck> searcher(m_caster, targets, check, containerTypeMask);
 SearchTargets<Trinity::WorldObjectListSearcher<Trinity::WorldObjectSpellConeTargetCheck> >(searcher, containerTypeMask, m_caster, m_caster, radius + extraSearchRadius);
 
 CallScriptObjectAreaTargetSelectHandlers(targets, spellEffectInfo.EffectIndex, targetType);
 
 if (!targets.empty())
 {
 // Other special target selection goes here
 if (uint32 maxTargets = m_spellValue->MaxAffectedTargets)
 Trinity::Containers::RandomResize(targets, maxTargets);
 
 for (WorldObject* itr : targets)
 {
 if (Unit* unit = itr->ToUnit())
 AddUnitTarget(unit, effMask, false);
 else if (GameObject* gObjTarget = itr->ToGameObject())
 AddGOTarget(gObjTarget, effMask);
 else if (Corpse* corpse = itr->ToCorpse())
 AddCorpseTarget(corpse, effMask);
 }
 }
 }
}
 
void Spell::SelectImplicitAreaTargets(SpellEffectInfo const& spellEffectInfo, SpellImplicitTargetInfo const& targetType, SpellTargetIndex targetIndex, uint32 effMask)
{
 WorldObject* referer = nullptr;
 switch (targetType.GetReferenceType())
 {
 case TARGET_REFERENCE_TYPE_SRC:
 case TARGET_REFERENCE_TYPE_DEST:
 case TARGET_REFERENCE_TYPE_CASTER:
 referer = m_caster;
 break;
 case TARGET_REFERENCE_TYPE_TARGET:
 referer = m_targets.GetUnitTarget();
 break;
 case TARGET_REFERENCE_TYPE_LAST:
 {
 referer = m_caster;
 
 // find last added target for this effect
 for (auto ihit = m_UniqueTargetInfo.rbegin(); ihit != m_UniqueTargetInfo.rend(); ++ihit)
 {
 if (ihit->EffectMask & (1 << spellEffectInfo.EffectIndex))
 {
 referer = ObjectAccessor::GetUnit(*m_caster, ihit->TargetGUID);
 break;
 }
 }
 break;
 }
 default:
 ABORT_MSG("Spell::SelectImplicitAreaTargets: received not implemented target reference type");
 return;
 }
 
 if (!referer)
 return;
 
 Position const* center = nullptr;
 switch (targetType.GetReferenceType())
 {
 case TARGET_REFERENCE_TYPE_SRC:
 center = m_targets.GetSrcPos();
 break;
 case TARGET_REFERENCE_TYPE_DEST:
 center = m_targets.GetDstPos();
 break;
 case TARGET_REFERENCE_TYPE_CASTER:
 case TARGET_REFERENCE_TYPE_TARGET:
 case TARGET_REFERENCE_TYPE_LAST:
 center = referer;
 break;
 default:
 ABORT_MSG("Spell::SelectImplicitAreaTargets: received not implemented target reference type");
 return;
 }
 
 float radius = spellEffectInfo.CalcRadius(m_caster, targetIndex) * m_spellValue->RadiusMod;
 std::list<WorldObject*> targets;
 switch (targetType.GetTarget())
 {
 case TARGET_UNIT_CASTER_AND_PASSENGERS:
 targets.push_back(m_caster);
 if (Unit* unit = m_caster->ToUnit())
 if (Vehicle const* vehicleKit = unit->GetVehicleKit())
 for (int8 seat = 0; seat < MAX_VEHICLE_SEATS; ++seat)
 if (Unit* passenger = vehicleKit->GetPassenger(seat))
 targets.push_back(passenger);
 break;
 case TARGET_UNIT_TARGET_ALLY_OR_RAID:
 if (Unit* targetedUnit = m_targets.GetUnitTarget())
 {
 if (!m_caster->IsUnit() || !m_caster->ToUnit()->IsInRaidWith(targetedUnit))
 targets.push_back(m_targets.GetUnitTarget());
 else
 SearchAreaTargets(targets, spellEffectInfo, radius, targetedUnit, referer, targetType.GetObjectType(), targetType.GetCheckType(),
 spellEffectInfo.ImplicitTargetConditions.get(), Trinity::WorldObjectSpellAreaTargetSearchReason::Area);
 }
 break;
 case TARGET_UNIT_CASTER_AND_SUMMONS:
 targets.push_back(m_caster);
 SearchAreaTargets(targets, spellEffectInfo, radius, center, referer, targetType.GetObjectType(), targetType.GetCheckType(),
 spellEffectInfo.ImplicitTargetConditions.get(), Trinity::WorldObjectSpellAreaTargetSearchReason::Area);
 break;
 default:
 SearchAreaTargets(targets, spellEffectInfo, radius, center, referer, targetType.GetObjectType(), targetType.GetCheckType(),
 spellEffectInfo.ImplicitTargetConditions.get(), Trinity::WorldObjectSpellAreaTargetSearchReason::Area);
 break;
 }
 
 if (targetType.GetObjectType() == TARGET_OBJECT_TYPE_UNIT_AND_DEST)
 {
 SpellDestination dest(*referer);
 if (m_spellInfo->HasAttribute(SPELL_ATTR4_USE_FACING_FROM_SPELL))
 dest._position.SetOrientation(spellEffectInfo.PositionFacing);
 
 CallScriptDestinationTargetSelectHandlers(dest, spellEffectInfo.EffectIndex, targetType);
 
 m_targets.ModDst(dest);
 }
 
 CallScriptObjectAreaTargetSelectHandlers(targets, spellEffectInfo.EffectIndex, targetType);
 
 if (targetType.GetTarget() == TARGET_UNIT_SRC_AREA_FURTHEST_ENEMY)
 targets.sort(Trinity::ObjectDistanceOrderPred(referer, false));
 
 if (!targets.empty())
 {
 // Other special target selection goes here
 if (uint32 maxTargets = m_spellValue->MaxAffectedTargets)
 {
 if (targetType.GetTarget() != TARGET_UNIT_SRC_AREA_FURTHEST_ENEMY)
 Trinity::Containers::RandomResize(targets, maxTargets);
 else if (targets.size() > maxTargets)
 targets.resize(maxTargets);
 }
 
 for (WorldObject* itr : targets)
 {
 if (Unit* unit = itr->ToUnit())
 AddUnitTarget(unit, effMask, false, true, center);
 else if (GameObject* gObjTarget = itr->ToGameObject())
 AddGOTarget(gObjTarget, effMask);
 else if (Corpse* corpse = itr->ToCorpse())
 AddCorpseTarget(corpse, effMask);
 }
 }
}
 
void Spell::SelectImplicitCasterDestTargets(SpellEffectInfo const& spellEffectInfo, SpellImplicitTargetInfo const& targetType, SpellTargetIndex targetIndex)
{
 SpellDestination dest(*m_caster);
 
 switch (targetType.GetTarget())
 {
 case TARGET_DEST_CASTER:
 break;
 case TARGET_DEST_HOME:
 if (Player* playerCaster = m_caster->ToPlayer())
 dest = SpellDestination(playerCaster->m_homebind);
 break;
 case TARGET_DEST_DB:
 if (SpellTargetPosition const* st = sSpellMgr->GetSpellTargetPosition(m_spellInfo->Id, spellEffectInfo.EffectIndex))
 {
 if (m_spellInfo->HasEffect(SPELL_EFFECT_TELEPORT_UNITS) || m_spellInfo->HasEffect(SPELL_EFFECT_TELEPORT_WITH_SPELL_VISUAL_KIT_LOADING_SCREEN) || m_spellInfo->HasEffect(SPELL_EFFECT_BIND))
 dest = SpellDestination(st->target_X, st->target_Y, st->target_Z, st->target_Orientation, (int32)st->target_mapId);
 else if (st->target_mapId == m_caster->GetMapId())
 dest = SpellDestination(st->target_X, st->target_Y, st->target_Z, st->target_Orientation);
 }
 else
 {
 TC_LOG_DEBUG("spells", "SPELL: unknown target coordinates for spell ID {}", m_spellInfo->Id);
 if (WorldObject* target = m_targets.GetObjectTarget())
 dest = SpellDestination(*target);
 }
 break;
 case TARGET_DEST_CASTER_FISHING:
 {
 float minDist = m_spellInfo->GetMinRange(true);
 float maxDist = m_spellInfo->GetMaxRange(true);
 float dist = frand(minDist, maxDist);
 float x, y, z;
 float angle = rand_norm() * static_cast<float>(M_PI * 35.0f / 180.0f) - static_cast<float>(M_PI * 17.5f / 180.0f);
 m_caster->GetClosePoint(x, y, z, DEFAULT_PLAYER_BOUNDING_RADIUS, dist, angle);
 
 float ground = m_caster->GetMapHeight(x, y, z);
 float liquidLevel = VMAP_INVALID_HEIGHT_VALUE;
 LiquidData liquidData;
 if (m_caster->GetMap()->GetLiquidStatus(m_caster->GetPhaseShift(), x, y, z, {}, &liquidData, m_caster->GetCollisionHeight()))
 liquidLevel = liquidData.level;
 
 if (liquidLevel <= ground) // When there is no liquid Map::GetWaterOrGroundLevel returns ground level
 {
 SendCastResult(SPELL_FAILED_NOT_HERE);
 SendChannelUpdate(0);
 finish(SPELL_FAILED_NOT_HERE);
 return;
 }
 
 if (ground + 0.75 > liquidLevel)
 {
 SendCastResult(SPELL_FAILED_TOO_SHALLOW);
 SendChannelUpdate(0);
 finish(SPELL_FAILED_TOO_SHALLOW);
 return;
 }
 
 dest = SpellDestination(x, y, liquidLevel, m_caster->GetOrientation());
 break;
 }
 case TARGET_DEST_CASTER_FRONT_LEAP:
 case TARGET_DEST_CASTER_MOVEMENT_DIRECTION:
 {
 Unit* unitCaster = m_caster->ToUnit();
 if (!unitCaster)
 break;
 
 float dist = spellEffectInfo.CalcRadius(unitCaster, targetIndex);
 float angle = targetType.CalcDirectionAngle();
 if (targetType.GetTarget() == TARGET_DEST_CASTER_MOVEMENT_DIRECTION)
 {
 angle = [&]()
 {
 switch (m_caster->m_movementInfo.GetMovementFlags() & (MOVEMENTFLAG_FORWARD | MOVEMENTFLAG_BACKWARD | MOVEMENTFLAG_STRAFE_LEFT | MOVEMENTFLAG_STRAFE_RIGHT))
 {
 case MOVEMENTFLAG_NONE:
 case MOVEMENTFLAG_FORWARD:
 case MOVEMENTFLAG_FORWARD | MOVEMENTFLAG_BACKWARD:
 case MOVEMENTFLAG_STRAFE_LEFT | MOVEMENTFLAG_STRAFE_RIGHT:
 case MOVEMENTFLAG_FORWARD | MOVEMENTFLAG_STRAFE_LEFT | MOVEMENTFLAG_STRAFE_RIGHT:
 case MOVEMENTFLAG_FORWARD | MOVEMENTFLAG_BACKWARD | MOVEMENTFLAG_STRAFE_LEFT | MOVEMENTFLAG_STRAFE_RIGHT:
 return 0.0f;
 case MOVEMENTFLAG_BACKWARD:
 case MOVEMENTFLAG_BACKWARD | MOVEMENTFLAG_STRAFE_LEFT | MOVEMENTFLAG_STRAFE_RIGHT:
 return static_cast<float>(M_PI);
 case MOVEMENTFLAG_STRAFE_LEFT:
 case MOVEMENTFLAG_FORWARD | MOVEMENTFLAG_BACKWARD | MOVEMENTFLAG_STRAFE_LEFT:
 return static_cast<float>(M_PI / 2);
 case MOVEMENTFLAG_FORWARD | MOVEMENTFLAG_STRAFE_LEFT:
 return static_cast<float>(M_PI / 4);
 case MOVEMENTFLAG_BACKWARD | MOVEMENTFLAG_STRAFE_LEFT:
 return static_cast<float>(3 * M_PI / 4);
 case MOVEMENTFLAG_STRAFE_RIGHT:
 case MOVEMENTFLAG_FORWARD | MOVEMENTFLAG_BACKWARD | MOVEMENTFLAG_STRAFE_RIGHT:
 return static_cast<float>(-M_PI / 2);
 case MOVEMENTFLAG_FORWARD | MOVEMENTFLAG_STRAFE_RIGHT:
 return static_cast<float>(-M_PI / 4);
 case MOVEMENTFLAG_BACKWARD | MOVEMENTFLAG_STRAFE_RIGHT:
 return static_cast<float>(-3 * M_PI / 4);
 default:
 return 0.0f;
 }
 }();
 }
 
 Position pos = dest._position;
 
 unitCaster->MovePositionToFirstCollision(pos, dist, angle);
 dest.Relocate(pos);
 break;
 }
 case TARGET_DEST_CASTER_GROUND:
 case TARGET_DEST_CASTER_GROUND_2:
 dest._position.m_positionZ = m_caster->GetMapWaterOrGroundLevel(dest._position.GetPositionX(), dest._position.GetPositionY(), dest._position.GetPositionZ());
 break;
 case TARGET_DEST_SUMMONER:
 if (Unit const* unitCaster = m_caster->ToUnit())
 if (TempSummon const* casterSummon = unitCaster->ToTempSummon())
 if (WorldObject const* summoner = casterSummon->GetSummoner())
 dest = SpellDestination(*summoner);
 break;
 default:
 {
 float dist = spellEffectInfo.CalcRadius(m_caster, targetIndex);
 float angle = targetType.CalcDirectionAngle();
 float objSize = m_caster->GetCombatReach();
 
 switch (targetType.GetTarget())
 {
 case TARGET_DEST_CASTER_SUMMON:
 dist = PET_FOLLOW_DIST;
 break;
 case TARGET_DEST_CASTER_RANDOM:
 if (dist > objSize)
 dist = objSize + (dist - objSize);
 break;
 case TARGET_DEST_CASTER_FRONT_LEFT:
 case TARGET_DEST_CASTER_BACK_LEFT:
 case TARGET_DEST_CASTER_FRONT_RIGHT:
 case TARGET_DEST_CASTER_BACK_RIGHT:
 {
 static float const DefaultTotemDistance = 3.0f;
 if (!spellEffectInfo.HasRadius(targetIndex))
 dist = DefaultTotemDistance;
 break;
 }
 default:
 break;
 }
 
 if (dist < objSize)
 dist = objSize;
 
 Position pos = dest._position;
 m_caster->MovePositionToFirstCollision(pos, dist, angle);
 
 dest.Relocate(pos);
 break;
 }
 }
 
 if (m_spellInfo->HasAttribute(SPELL_ATTR4_USE_FACING_FROM_SPELL))
 dest._position.SetOrientation(spellEffectInfo.PositionFacing);
 
 CallScriptDestinationTargetSelectHandlers(dest, spellEffectInfo.EffectIndex, targetType);
 m_targets.SetDst(dest);
}
 
void Spell::SelectImplicitTargetDestTargets(SpellEffectInfo const& spellEffectInfo, SpellImplicitTargetInfo const& targetType, SpellTargetIndex targetIndex)
{
 ASSERT(m_targets.GetObjectTarget() && "Spell::SelectImplicitTargetDestTargets - no explicit object target available!");
 WorldObject* target = m_targets.GetObjectTarget();
 
 SpellDestination dest(*target);
 
 switch (targetType.GetTarget())
 {
 case TARGET_DEST_TARGET_ENEMY:
 case TARGET_DEST_TARGET_ANY:
 case TARGET_DEST_TARGET_ALLY:
 break;
 default:
 {
 float angle = targetType.CalcDirectionAngle();
 float dist = spellEffectInfo.CalcRadius(nullptr, targetIndex);
 
 Position pos = dest._position;
 target->MovePositionToFirstCollision(pos, dist, angle);
 
 dest.Relocate(pos);
 break;
 }
 }
 
 if (m_spellInfo->HasAttribute(SPELL_ATTR4_USE_FACING_FROM_SPELL))
 dest._position.SetOrientation(spellEffectInfo.PositionFacing);
 
 CallScriptDestinationTargetSelectHandlers(dest, spellEffectInfo.EffectIndex, targetType);
 m_targets.SetDst(dest);
}
 
void Spell::SelectImplicitDestDestTargets(SpellEffectInfo const& spellEffectInfo, SpellImplicitTargetInfo const& targetType, SpellTargetIndex targetIndex)
{
 // set destination to caster if no dest provided
 // can only happen if previous destination target could not be set for some reason
 // (not found nearby target, or channel target for example
 // maybe we should abort the spell in such case?
 CheckDst();
 
 SpellDestination dest(*m_targets.GetDst());
 
 switch (targetType.GetTarget())
 {
 case TARGET_DEST_DYNOBJ_ENEMY:
 case TARGET_DEST_DYNOBJ_ALLY:
 case TARGET_DEST_DYNOBJ_NONE:
 case TARGET_DEST_DEST:
 break;
 case TARGET_DEST_DEST_GROUND:
 dest._position.m_positionZ = m_caster->GetMapHeight(dest._position.GetPositionX(), dest._position.GetPositionY(), dest._position.GetPositionZ());
 break;
 case TARGET_DEST_DEST_TARGET_TOWARDS_CASTER:
 {
 float dist = spellEffectInfo.CalcRadius(m_caster, targetIndex);
 Position pos = dest._position;
 float angle = pos.GetAbsoluteAngle(m_caster) - m_caster->GetOrientation();
 
 m_caster->MovePositionToFirstCollision(pos, dist, angle);
 pos.SetOrientation(m_caster->GetAbsoluteAngle(dest._position));
 
 dest.Relocate(pos);
 break;
 }
 default:
 {
 float angle = targetType.CalcDirectionAngle();
 float dist = spellEffectInfo.CalcRadius(m_caster, targetIndex);
 
 Position pos = dest._position;
 m_caster->MovePositionToFirstCollision(pos, dist, angle);
 
 dest.Relocate(pos);
 break;
 }
 }
 
 if (m_spellInfo->HasAttribute(SPELL_ATTR4_USE_FACING_FROM_SPELL))
 dest._position.SetOrientation(spellEffectInfo.PositionFacing);
 
 CallScriptDestinationTargetSelectHandlers(dest, spellEffectInfo.EffectIndex, targetType);
 m_targets.ModDst(dest);
}
 
void Spell::SelectImplicitCasterObjectTargets(SpellEffectInfo const& spellEffectInfo, SpellImplicitTargetInfo const& targetType)
{
 WorldObject* target = nullptr;
 bool checkIfValid = true;
 
 switch (targetType.GetTarget())
 {
 case TARGET_UNIT_CASTER:
 target = m_caster;
 checkIfValid = false;
 break;
 case TARGET_UNIT_MASTER:
 target = m_caster->GetCharmerOrOwner();
 break;
 case TARGET_UNIT_PET:
 if (Unit* unitCaster = m_caster->ToUnit())
 target = unitCaster->GetGuardianPet();
 break;
 case TARGET_UNIT_SUMMONER:
 if (Unit* unitCaster = m_caster->ToUnit())
 if (unitCaster->IsSummon())
 target = unitCaster->ToTempSummon()->GetSummonerUnit();
 break;
 case TARGET_UNIT_VEHICLE:
 if (Unit* unitCaster = m_caster->ToUnit())
 target = unitCaster->GetVehicleBase();
 break;
 case TARGET_UNIT_PASSENGER_0:
 case TARGET_UNIT_PASSENGER_1:
 case TARGET_UNIT_PASSENGER_2:
 case TARGET_UNIT_PASSENGER_3:
 case TARGET_UNIT_PASSENGER_4:
 case TARGET_UNIT_PASSENGER_5:
 case TARGET_UNIT_PASSENGER_6:
 case TARGET_UNIT_PASSENGER_7:
 if (Creature* vehicleBase = m_caster->ToCreature())
 if (vehicleBase->IsVehicle())
 target = vehicleBase->GetVehicleKit()->GetPassenger(targetType.GetTarget() - TARGET_UNIT_PASSENGER_0);
 break;
 case TARGET_UNIT_TARGET_TAP_LIST:
 if (Creature* creatureCaster = m_caster->ToCreature())
 if (!creatureCaster->GetTapList().empty())
 target = ObjectAccessor::GetWorldObject(*creatureCaster, Trinity::Containers::SelectRandomContainerElement(creatureCaster->GetTapList()));
 break;
 case TARGET_UNIT_OWN_CRITTER:
 if (Unit const* unitCaster = m_caster->ToUnit())
 target = ObjectAccessor::GetCreatureOrPetOrVehicle(*m_caster, unitCaster->GetCritterGUID());
 break;
 default:
 break;
 }
 
 CallScriptObjectTargetSelectHandlers(target, spellEffectInfo.EffectIndex, targetType);
 
 if (target)
 {
 if (Unit* unit = target->ToUnit())
 AddUnitTarget(unit, 1 << spellEffectInfo.EffectIndex, checkIfValid);
 else if (GameObject* go = target->ToGameObject())
 AddGOTarget(go, 1 << spellEffectInfo.EffectIndex);
 else if (Corpse* corpse = target->ToCorpse())
 AddCorpseTarget(corpse, 1 << spellEffectInfo.EffectIndex);
 }
}
 
void Spell::SelectImplicitTargetObjectTargets(SpellEffectInfo const& spellEffectInfo, SpellImplicitTargetInfo const& targetType)
{
 ASSERT((m_targets.GetObjectTarget() || m_targets.GetItemTarget()) && "Spell::SelectImplicitTargetObjectTargets - no explicit object or item target available!");
 
 WorldObject* target = m_targets.GetObjectTarget();
 
 CallScriptObjectTargetSelectHandlers(target, spellEffectInfo.EffectIndex, targetType);
 
 if (target)
 {
 if (Unit* unit = target->ToUnit())
 AddUnitTarget(unit, 1 << spellEffectInfo.EffectIndex, true, false);
 else if (GameObject* gobj = target->ToGameObject())
 AddGOTarget(gobj, 1 << spellEffectInfo.EffectIndex);
 else if (Corpse* corpse = target->ToCorpse())
 AddCorpseTarget(corpse, 1 << spellEffectInfo.EffectIndex);
 
 SelectImplicitChainTargets(spellEffectInfo, targetType, target, 1 << spellEffectInfo.EffectIndex);
 }
 // Script hook can remove object target and we would wrongly land here
 else if (Item* item = m_targets.GetItemTarget())
 AddItemTarget(item, 1 << spellEffectInfo.EffectIndex);
}
 
void Spell::SelectImplicitChainTargets(SpellEffectInfo const& spellEffectInfo, SpellImplicitTargetInfo const& targetType, WorldObject* target, uint32 effMask)
{
 int32 maxTargets = spellEffectInfo.ChainTargets;
 if (Player* modOwner = m_caster->GetSpellModOwner())
 modOwner->ApplySpellMod(m_spellInfo, SpellModOp::ChainTargets, maxTargets, this);
 
 if (maxTargets > 1)
 {
 // mark damage multipliers as used
 for (size_t k = spellEffectInfo.EffectIndex; k < m_spellInfo->GetEffects().size(); ++k)
 if (effMask & (1 << k))
 m_damageMultipliers[k] = 1.0f;
 m_applyMultiplierMask |= effMask;
 
 std::list<WorldObject*> targets;
 SearchChainTargets(targets, maxTargets - 1, target, targetType.GetObjectType(), targetType.GetCheckType()
 , spellEffectInfo, targetType.GetTarget() == TARGET_UNIT_TARGET_CHAINHEAL_ALLY);
 
 // Chain primary target is added earlier
 CallScriptObjectAreaTargetSelectHandlers(targets, spellEffectInfo.EffectIndex, targetType);
 
 Position const* losPosition = m_spellInfo->HasAttribute(SPELL_ATTR2_CHAIN_FROM_CASTER) ? m_caster : target;
 
 for (std::list<WorldObject*>::iterator itr = targets.begin(); itr != targets.end(); ++itr)
 {
 if (Unit* unit = (*itr)->ToUnit())
 AddUnitTarget(unit, effMask, false, true, losPosition);
 
 if (!m_spellInfo->HasAttribute(SPELL_ATTR2_CHAIN_FROM_CASTER) && !spellEffectInfo.EffectAttributes.HasFlag(SpellEffectAttributes::ChainFromInitialTarget))
 losPosition = *itr;
 }
 }
}
 
float tangent(float x)
{
 x = std::tan(x);
 //if (x < std::numeric_limits<float>::max() && x > -std::numeric_limits<float>::max()) return x;
 //if (x >= std::numeric_limits<float>::max()) return std::numeric_limits<float>::max();
 //if (x <= -std::numeric_limits<float>::max()) return -std::numeric_limits<float>::max();
 if (x < 100000.0f && x > -100000.0f) return x;
 if (x >= 100000.0f) return 100000.0f;
 if (x <= 100000.0f) return -100000.0f;
 return 0.0f;
}
 
void Spell::SelectImplicitTrajTargets(SpellEffectInfo const& spellEffectInfo, SpellImplicitTargetInfo const& targetType)
{
 if (!m_targets.HasTraj())
 return;
 
 float dist2d = m_targets.GetDist2d();
 if (!dist2d)
 return;
 
 Position srcPos = *m_targets.GetSrcPos();
 srcPos.SetOrientation(m_caster->GetOrientation());
 float srcToDestDelta = m_targets.GetDstPos()->m_positionZ - srcPos.m_positionZ;
 
 std::list<WorldObject*> targets;
 Trinity::WorldObjectSpellTrajTargetCheck check(dist2d, &srcPos, m_caster, m_spellInfo, targetType.GetCheckType(), spellEffectInfo.ImplicitTargetConditions.get(), TARGET_OBJECT_TYPE_NONE);
 Trinity::WorldObjectListSearcher<Trinity::WorldObjectSpellTrajTargetCheck> searcher(m_caster, targets, check, GRID_MAP_TYPE_MASK_ALL);
 SearchTargets<Trinity::WorldObjectListSearcher<Trinity::WorldObjectSpellTrajTargetCheck> > (searcher, GRID_MAP_TYPE_MASK_ALL, m_caster, &srcPos, dist2d);
 if (targets.empty())
 return;
 
 targets.sort(Trinity::ObjectDistanceOrderPred(m_caster));
 
 float b = tangent(m_targets.GetPitch());
 float a = (srcToDestDelta - dist2d * b) / (dist2d * dist2d);
 if (a > -0.0001f)
 a = 0.f;
 
 // We should check if triggered spell has greater range (which is true in many cases, and initial spell has too short max range)
 // limit max range to 300 yards, sometimes triggered spells can have 50000yds
 float bestDist = m_spellInfo->GetMaxRange(false);
 if (SpellInfo const* triggerSpellInfo = sSpellMgr->GetSpellInfo(spellEffectInfo.TriggerSpell, GetCastDifficulty()))
 bestDist = std::min(std::max(bestDist, triggerSpellInfo->GetMaxRange(false)), std::min(dist2d, 300.0f));
 
 // GameObjects don't cast traj
 Unit* unitCaster = ASSERT_NOTNULL(m_caster->ToUnit());
 for (auto itr = targets.begin(); itr != targets.end(); ++itr)
 {
 if (m_spellInfo->CheckTarget(unitCaster, *itr, true) != SPELL_CAST_OK)
 continue;
 
 if (Unit* unit = (*itr)->ToUnit())
 {
 if (unitCaster == *itr || unitCaster->IsOnVehicle(unit) || unit->GetVehicle())
 continue;
 
 if (Creature* creatureTarget = unit->ToCreature())
 {
 if (!(creatureTarget->GetCreatureDifficulty()->TypeFlags & CREATURE_TYPE_FLAG_COLLIDE_WITH_MISSILES))
 continue;
 }
 }
 
 float const size = std::max((*itr)->GetCombatReach(), 1.0f);
 float const objDist2d = srcPos.GetExactDist2d(*itr);
 float const dz = (*itr)->GetPositionZ() - srcPos.m_positionZ;
 
 float const horizontalDistToTraj = std::fabs(objDist2d * std::sin(srcPos.GetRelativeAngle(*itr)));
 float const sizeFactor = std::cos((horizontalDistToTraj / size) * (M_PI / 2.0f));
 float const distToHitPoint = std::max(objDist2d * std::cos(srcPos.GetRelativeAngle(*itr)) - size * sizeFactor, 0.0f);
 float const height = distToHitPoint * (a * distToHitPoint + b);
 
 if (fabs(dz - height) > size + b / 2.0f + TRAJECTORY_MISSILE_SIZE)
 continue;
 
 if (distToHitPoint < bestDist)
 {
 bestDist = distToHitPoint;
 break;
 }
 }
 
 if (dist2d > bestDist)
 {
 float x = m_targets.GetSrcPos()->m_positionX + std::cos(unitCaster->GetOrientation()) * bestDist;
 float y = m_targets.GetSrcPos()->m_positionY + std::sin(unitCaster->GetOrientation()) * bestDist;
 float z = m_targets.GetSrcPos()->m_positionZ + bestDist * (a * bestDist + b);
 
 SpellDestination dest(x, y, z, unitCaster->GetOrientation());
 if (m_spellInfo->HasAttribute(SPELL_ATTR4_USE_FACING_FROM_SPELL))
 dest._position.SetOrientation(spellEffectInfo.PositionFacing);
 
 CallScriptDestinationTargetSelectHandlers(dest, spellEffectInfo.EffectIndex, targetType);
 m_targets.ModDst(dest);
 }
}
 
void Spell::SelectImplicitLineTargets(SpellEffectInfo const& spellEffectInfo, SpellImplicitTargetInfo const& targetType, SpellTargetIndex targetIndex, uint32 effMask)
{
 std::list<WorldObject*> targets;
 SpellTargetObjectTypes objectType = targetType.GetObjectType();
 SpellTargetCheckTypes selectionType = targetType.GetCheckType();
 Position const* dst = nullptr;
 switch (targetType.GetReferenceType())
 {
 case TARGET_REFERENCE_TYPE_SRC:
 dst = m_targets.GetSrcPos();
 break;
 case TARGET_REFERENCE_TYPE_DEST:
 dst = m_targets.GetDstPos();
 break;
 case TARGET_REFERENCE_TYPE_CASTER:
 dst = m_caster;
 break;
 case TARGET_REFERENCE_TYPE_TARGET:
 dst = m_targets.GetUnitTarget();
 break;
 default:
 ABORT_MSG("Spell::SelectImplicitLineTargets: received not implemented target reference type");
 return;
 }
 
 ConditionContainer* condList = spellEffectInfo.ImplicitTargetConditions.get();
 float radius = spellEffectInfo.CalcRadius(m_caster, targetIndex) * m_spellValue->RadiusMod;
 
 if (uint32 containerTypeMask = GetSearcherTypeMask(m_spellInfo, spellEffectInfo, objectType, condList))
 {
 Trinity::WorldObjectSpellLineTargetCheck check(m_caster, dst, m_spellInfo->Width ? m_spellInfo->Width : m_caster->GetCombatReach(), radius, m_caster, m_spellInfo, selectionType, condList, objectType);
 Trinity::WorldObjectListSearcher<Trinity::WorldObjectSpellLineTargetCheck> searcher(m_caster, targets, check, containerTypeMask);
 SearchTargets<Trinity::WorldObjectListSearcher<Trinity::WorldObjectSpellLineTargetCheck>>(searcher, containerTypeMask, m_caster, m_caster, radius);
 
 CallScriptObjectAreaTargetSelectHandlers(targets, spellEffectInfo.EffectIndex, targetType);
 
 if (!targets.empty())
 {
 // Other special target selection goes here
 if (uint32 maxTargets = m_spellValue->MaxAffectedTargets)
 {
 if (maxTargets < targets.size())
 {
 targets.sort(Trinity::ObjectDistanceOrderPred(m_caster));
 targets.resize(maxTargets);
 }
 }
 
 for (std::list<WorldObject*>::iterator itr = targets.begin(); itr != targets.end(); ++itr)
 {
 if (Unit* unit = (*itr)->ToUnit())
 AddUnitTarget(unit, effMask, false);
 else if (GameObject* gObjTarget = (*itr)->ToGameObject())
 AddGOTarget(gObjTarget, effMask);
 else if (Corpse* corpse = (*itr)->ToCorpse())
 AddCorpseTarget(corpse, 1 << spellEffectInfo.EffectIndex);
 }
 }
 }
}
 
void Spell::SelectEffectTypeImplicitTargets(SpellEffectInfo const& spellEffectInfo)
{
 // special case for SPELL_EFFECT_SUMMON_RAF_FRIEND and SPELL_EFFECT_SUMMON_PLAYER, queue them on map for later execution
 switch (spellEffectInfo.Effect)
 {
 case SPELL_EFFECT_SUMMON_RAF_FRIEND:
 case SPELL_EFFECT_SUMMON_PLAYER:
 if (m_caster->GetTypeId() == TYPEID_PLAYER && !m_caster->ToPlayer()->GetTarget().IsEmpty())
 {
 WorldObject* target = ObjectAccessor::FindPlayer(m_caster->ToPlayer()->GetTarget());
 CallScriptObjectTargetSelectHandlers(target, spellEffectInfo.EffectIndex, SpellImplicitTargetInfo());
 
 // scripts may modify the target - recheck
 if (target && target->GetTypeId() == TYPEID_PLAYER)
 {
 // target is not stored in target map for those spells
 // since we're completely skipping AddUnitTarget logic, we need to check immunity manually
 // eg. aura 21546 makes target immune to summons
 Player* player = target->ToPlayer();
 if (player->IsImmunedToSpellEffect(m_spellInfo, spellEffectInfo, nullptr))
 return;
 
 target->GetMap()->AddFarSpellCallback([spell = this, &spellEffectInfo, targetGuid = target->GetGUID()](Map* map)
 {
 Player* player = ObjectAccessor::GetPlayer(map, targetGuid);
 if (!player)
 return;
 
 // check immunity again in case it changed during update
 if (player->IsImmunedToSpellEffect(spell->GetSpellInfo(), spellEffectInfo, nullptr))
 return;
 
 spell->HandleEffects(player, nullptr, nullptr, nullptr, spellEffectInfo, SPELL_EFFECT_HANDLE_HIT_TARGET);
 });
 }
 }
 return;
 default:
 break;
 }
 
 // select spell implicit targets based on effect type
 if (!spellEffectInfo.GetImplicitTargetType())
 return;
 
 uint32 targetMask = spellEffectInfo.GetMissingTargetMask();
 
 if (!targetMask)
 return;
 
 WorldObject* target = nullptr;
 
 switch (spellEffectInfo.GetImplicitTargetType())
 {
 // add explicit object target or self to the target map
 case EFFECT_IMPLICIT_TARGET_EXPLICIT:
 // player which not released his spirit is Unit, but target flag for it is TARGET_FLAG_CORPSE_MASK
 if (targetMask & (TARGET_FLAG_UNIT_MASK | TARGET_FLAG_CORPSE_MASK))
 {
 if (Unit* unit = m_targets.GetUnitTarget())
 target = unit;
 else if (targetMask & TARGET_FLAG_CORPSE_MASK)
 {
 if (Corpse* corpseTarget = m_targets.GetCorpseTarget())
 target = corpseTarget;
 }
 else //if (targetMask & TARGET_FLAG_UNIT_MASK)
 target = m_caster;
 }
 if (targetMask & TARGET_FLAG_ITEM_MASK)
 {
 if (Item* item = m_targets.GetItemTarget())
 AddItemTarget(item, 1 << spellEffectInfo.EffectIndex);
 return;
 }
 if (targetMask & TARGET_FLAG_GAMEOBJECT_MASK)
 target = m_targets.GetGOTarget();
 break;
 // add self to the target map
 case EFFECT_IMPLICIT_TARGET_CASTER:
 if (targetMask & TARGET_FLAG_UNIT_MASK)
 target = m_caster;
 break;
 default:
 break;
 }
 
 CallScriptObjectTargetSelectHandlers(target, spellEffectInfo.EffectIndex, SpellImplicitTargetInfo());
 
 if (target)
 {
 if (target->ToUnit())
 AddUnitTarget(target->ToUnit(), 1 << spellEffectInfo.EffectIndex, false);
 else if (target->ToGameObject())
 AddGOTarget(target->ToGameObject(), 1 << spellEffectInfo.EffectIndex);
 else if (target->ToCorpse())
 AddCorpseTarget(target->ToCorpse(), 1 << spellEffectInfo.EffectIndex);
 }
}
 
uint32 Spell::GetSearcherTypeMask(SpellInfo const* spellInfo, SpellEffectInfo const& spellEffectInfo, SpellTargetObjectTypes objType, ConditionContainer const* condList)
{
 // this function selects which containers need to be searched for spell target
 uint32 retMask = GRID_MAP_TYPE_MASK_ALL;
 
 // filter searchers based on searched object type
 switch (objType)
 {
 case TARGET_OBJECT_TYPE_UNIT:
 case TARGET_OBJECT_TYPE_UNIT_AND_DEST:
 retMask &= GRID_MAP_TYPE_MASK_PLAYER | GRID_MAP_TYPE_MASK_CREATURE;
 break;
 case TARGET_OBJECT_TYPE_CORPSE:
 case TARGET_OBJECT_TYPE_CORPSE_ENEMY:
 case TARGET_OBJECT_TYPE_CORPSE_ALLY:
 retMask &= GRID_MAP_TYPE_MASK_PLAYER | GRID_MAP_TYPE_MASK_CORPSE | GRID_MAP_TYPE_MASK_CREATURE;
 break;
 case TARGET_OBJECT_TYPE_GOBJ:
 case TARGET_OBJECT_TYPE_GOBJ_ITEM:
 retMask &= GRID_MAP_TYPE_MASK_GAMEOBJECT;
 break;
 default:
 break;
 }
 
 if (spellInfo->HasAttribute(SPELL_ATTR3_ONLY_ON_PLAYER) || spellEffectInfo.EffectAttributes.HasFlag(SpellEffectAttributes::PlayersOnly))
 retMask &= GRID_MAP_TYPE_MASK_CORPSE | GRID_MAP_TYPE_MASK_PLAYER;
 if (spellInfo->HasAttribute(SPELL_ATTR3_ONLY_ON_GHOSTS))
 retMask &= GRID_MAP_TYPE_MASK_PLAYER;
 if (spellInfo->HasAttribute(SPELL_ATTR5_NOT_ON_PLAYER))
 retMask &= ~GRID_MAP_TYPE_MASK_PLAYER;
 
 if (condList)
 retMask &= sConditionMgr->GetSearcherTypeMaskForConditionList(*condList);
 return retMask;
}
 
template<class SEARCHER>
void Spell::SearchTargets(SEARCHER& searcher, uint32 containerMask, WorldObject* referer, Position const* pos, float radius)
{
 if (!containerMask)
 return;
 
 // search world and grid for possible targets
 bool searchInGrid = (containerMask & (GRID_MAP_TYPE_MASK_CREATURE | GRID_MAP_TYPE_MASK_GAMEOBJECT)) != 0;
 bool searchInWorld = (containerMask & (GRID_MAP_TYPE_MASK_CREATURE | GRID_MAP_TYPE_MASK_PLAYER | GRID_MAP_TYPE_MASK_CORPSE)) != 0;
 if (searchInGrid || searchInWorld)
 {
 float x, y;
 x = pos->GetPositionX();
 y = pos->GetPositionY();
 
 CellCoord p(Trinity::ComputeCellCoord(x, y));
 Cell cell(p);
 cell.SetNoCreate();
 
 Map* map = referer->GetMap();
 
 if (searchInWorld)
 Cell::VisitWorldObjects(x, y, map, searcher, radius);
 
 if (searchInGrid)
 Cell::VisitGridObjects(x, y, map, searcher, radius);
 }
}
 
WorldObject* Spell::SearchNearbyTarget(SpellEffectInfo const& spellEffectInfo, float range, SpellTargetObjectTypes objectType, SpellTargetCheckTypes selectionType, ConditionContainer const* condList)
{
 WorldObject* target = nullptr;
 uint32 containerTypeMask = GetSearcherTypeMask(m_spellInfo, spellEffectInfo, objectType, condList);
 if (!containerTypeMask)
 return nullptr;
 
 Trinity::WorldObjectSpellNearbyTargetCheck check(range, m_caster, m_spellInfo, selectionType, condList, objectType);
 Trinity::WorldObjectLastSearcher<Trinity::WorldObjectSpellNearbyTargetCheck> searcher(m_caster, target, check, containerTypeMask);
 searcher.i_phaseShift = &PhasingHandler::GetAlwaysVisiblePhaseShift();
 SearchTargets<Trinity::WorldObjectLastSearcher<Trinity::WorldObjectSpellNearbyTargetCheck>>(searcher, containerTypeMask, m_caster, m_caster, range);
 return target;
}
 
void Spell::SearchAreaTargets(std::list<WorldObject*>& targets, SpellEffectInfo const& spellEffectInfo, float range, Position const* position, WorldObject* referer,
 SpellTargetObjectTypes objectType, SpellTargetCheckTypes selectionType, ConditionContainer const* condList,
 Trinity::WorldObjectSpellAreaTargetSearchReason searchReason)
{
 uint32 containerTypeMask = GetSearcherTypeMask(m_spellInfo, spellEffectInfo, objectType, condList);
 if (!containerTypeMask)
 return;
 
 float extraSearchRadius = range > 0.0f ? EXTRA_CELL_SEARCH_RADIUS : 0.0f;
 Trinity::WorldObjectSpellAreaTargetCheck check(range, position, m_caster, referer, m_spellInfo, selectionType, condList, objectType, searchReason);
 Trinity::WorldObjectListSearcher<Trinity::WorldObjectSpellAreaTargetCheck> searcher(m_caster, targets, check, containerTypeMask);
 searcher.i_phaseShift = &PhasingHandler::GetAlwaysVisiblePhaseShift();
 SearchTargets<Trinity::WorldObjectListSearcher<Trinity::WorldObjectSpellAreaTargetCheck>>(searcher, containerTypeMask, m_caster, position, range + extraSearchRadius);
}
 
void Spell::SearchChainTargets(std::list<WorldObject*>& targets, uint32 chainTargets, WorldObject* target, SpellTargetObjectTypes objectType,
 SpellTargetCheckTypes selectType, SpellEffectInfo const& spellEffectInfo, bool isChainHeal)
{
 // max dist for jump target selection
 float jumpRadius = 0.0f;
 switch (m_spellInfo->DmgClass)
 {
 case SPELL_DAMAGE_CLASS_RANGED:
 // 7.5y for multi shot
 jumpRadius = 7.5f;
 break;
 case SPELL_DAMAGE_CLASS_MELEE:
 // 5y for swipe, cleave and similar
 jumpRadius = 5.0f;
 break;
 case SPELL_DAMAGE_CLASS_NONE:
 case SPELL_DAMAGE_CLASS_MAGIC:
 // 12.5y for chain heal spell since 3.2 patch
 if (isChainHeal)
 jumpRadius = 12.5f;
 // 10y as default for magic chain spells
 else
 jumpRadius = 10.0f;
 break;
 }
 
 if (Player* modOwner = m_caster->GetSpellModOwner())
 modOwner->ApplySpellMod(m_spellInfo, SpellModOp::ChainJumpDistance, jumpRadius, this);
 
 // max dist which spell can reach
 float searchRadius = [&]()
 {
 if (m_spellInfo->HasAttribute(SPELL_ATTR2_CHAIN_FROM_CASTER))
 return GetMinMaxRange(false).second;
 
 if (spellEffectInfo.EffectAttributes.HasFlag(SpellEffectAttributes::ChainFromInitialTarget))
 return jumpRadius;
 
 return jumpRadius * chainTargets;
 }();
 
 WorldObject* chainSource = m_spellInfo->HasAttribute(SPELL_ATTR2_CHAIN_FROM_CASTER) ? m_caster : target;
 std::list<WorldObject*> tempTargets;
 SearchAreaTargets(tempTargets, spellEffectInfo, searchRadius, chainSource, m_caster, objectType, selectType, spellEffectInfo.ImplicitTargetConditions.get(),
 Trinity::WorldObjectSpellAreaTargetSearchReason::Chain);
 tempTargets.remove(target);
 
 // remove targets which are always invalid for chain spells
 // for some spells allow only chain targets in front of caster (swipe for example)
 if (m_spellInfo->HasAttribute(SPELL_ATTR5_MELEE_CHAIN_TARGETING))
 {
 tempTargets.remove_if([&](WorldObject* object)
 {
 return !m_caster->HasInArc(static_cast<float>(M_PI), object);
 });
 }
 
 while (chainTargets)
 {
 // try to get unit for next chain jump
 std::list<WorldObject*>::iterator foundItr = tempTargets.end();
 // get unit with highest hp deficit in dist
 if (isChainHeal)
 {
 uint32 maxHPDeficit = 0;
 for (std::list<WorldObject*>::iterator itr = tempTargets.begin(); itr != tempTargets.end(); ++itr)
 {
 if (Unit* unit = (*itr)->ToUnit())
 {
 uint32 deficit = unit->GetMaxHealth() - unit->GetHealth();
 if ((deficit > maxHPDeficit || foundItr == tempTargets.end()) && chainSource->IsWithinDist(unit, jumpRadius) && IsWithinLOS(chainSource, unit, false, VMAP::ModelIgnoreFlags::M2))
 {
 foundItr = itr;
 maxHPDeficit = deficit;
 }
 }
 }
 }
 // get closest object
 else
 {
 for (std::list<WorldObject*>::iterator itr = tempTargets.begin(); itr != tempTargets.end(); ++itr)
 {
 bool isBestDistanceMatch = foundItr != tempTargets.end() ? chainSource->GetDistanceOrder(*itr, *foundItr) : chainSource->IsWithinDist(*itr, jumpRadius);
 if (!isBestDistanceMatch)
 continue;
 
 if (!IsWithinLOS(chainSource, *itr, false, VMAP::ModelIgnoreFlags::M2))
 continue;
 
 if (spellEffectInfo.EffectAttributes.HasFlag(SpellEffectAttributes::EnforceLineOfSightToChainTargets) && !IsWithinLOS(m_caster, *itr, false, VMAP::ModelIgnoreFlags::M2))
 continue;
 
 foundItr = itr;
 }
 }
 // not found any valid target - chain ends
 if (foundItr == tempTargets.end())
 break;
 
 if (!m_spellInfo->HasAttribute(SPELL_ATTR2_CHAIN_FROM_CASTER) && !spellEffectInfo.EffectAttributes.HasFlag(SpellEffectAttributes::ChainFromInitialTarget))
 chainSource = *foundItr;
 
 targets.push_back(*foundItr);
 tempTargets.erase(foundItr);
 --chainTargets;
 }
}
 
GameObject* Spell::SearchSpellFocus()
{
 GameObject* focus = nullptr;
 Trinity::GameObjectFocusCheck check(m_caster, m_spellInfo->RequiresSpellFocus);
 Trinity::GameObjectSearcher<Trinity::GameObjectFocusCheck> searcher(m_caster, focus, check);
 SearchTargets(searcher, GRID_MAP_TYPE_MASK_GAMEOBJECT, m_caster, m_caster, m_caster->GetVisibilityRange());
 return focus;
}
 
void Spell::prepareDataForTriggerSystem()
{
 //==========================================================================================
 // Now fill data for trigger system, need know:
 // Create base triggers flags for Attacker and Victim (m_procAttacker, m_procVictim and m_hitMask)
 //==========================================================================================
 
 m_procVictim = m_procAttacker = PROC_FLAG_NONE;
 // Get data for type of attack and fill base info for trigger
 switch (m_spellInfo->DmgClass)
 {
 case SPELL_DAMAGE_CLASS_MELEE:
 m_procAttacker = PROC_FLAG_DEAL_MELEE_ABILITY;
 if (m_attackType == OFF_ATTACK)
 m_procAttacker |= PROC_FLAG_OFF_HAND_WEAPON_SWING;
 else
 m_procAttacker |= PROC_FLAG_MAIN_HAND_WEAPON_SWING;
 m_procVictim = PROC_FLAG_TAKE_MELEE_ABILITY;
 break;
 case SPELL_DAMAGE_CLASS_RANGED:
 // Auto attack
 if (m_spellInfo->HasAttribute(SPELL_ATTR2_AUTO_REPEAT))
 {
 m_procAttacker = PROC_FLAG_DEAL_RANGED_ATTACK;
 m_procVictim = PROC_FLAG_TAKE_RANGED_ATTACK;
 }
 else // Ranged spell attack
 {
 m_procAttacker = PROC_FLAG_DEAL_RANGED_ABILITY;
 m_procVictim = PROC_FLAG_TAKE_RANGED_ABILITY;
 }
 break;
 default:
 if (m_spellInfo->EquippedItemClass == ITEM_CLASS_WEAPON &&
 m_spellInfo->EquippedItemSubClassMask & (1 << ITEM_SUBCLASS_WEAPON_WAND)
 && m_spellInfo->HasAttribute(SPELL_ATTR2_AUTO_REPEAT)) // Wands auto attack
 {
 m_procAttacker = PROC_FLAG_DEAL_RANGED_ATTACK;
 m_procVictim = PROC_FLAG_TAKE_RANGED_ATTACK;
 }
 // For other spells trigger procflags are set in Spell::TargetInfo::DoDamageAndTriggers
 // Because spell positivity is dependant on target
 }
}
 
void Spell::CleanupTargetList()
{
 m_UniqueTargetInfo.clear();
 m_UniqueGOTargetInfo.clear();
 m_UniqueItemInfo.clear();
 m_delayMoment = 0;
}
 
class ProcReflectDelayed : public BasicEvent
{
 public:
 ProcReflectDelayed(Unit* owner, ObjectGuid casterGuid) : _victim(owner), _casterGuid(casterGuid) { }
 
 bool Execute(uint64 /*e_time*/, uint32 /*p_time*/) override
 {
 Unit* caster = ObjectAccessor::GetUnit(*_victim, _casterGuid);
 if (!caster)
 return true;
 
 ProcFlags const typeMaskActor = PROC_FLAG_NONE;
 ProcFlags const typeMaskActionTarget = PROC_FLAG_TAKE_HARMFUL_SPELL | PROC_FLAG_TAKE_HARMFUL_ABILITY;
 ProcFlagsSpellType const spellTypeMask = PROC_SPELL_TYPE_DAMAGE | PROC_SPELL_TYPE_NO_DMG_HEAL;
 ProcFlagsSpellPhase const spellPhaseMask = PROC_SPELL_PHASE_NONE;
 ProcFlagsHit const hitMask = PROC_HIT_REFLECT;
 
 Unit::ProcSkillsAndAuras(caster, _victim, typeMaskActor, typeMaskActionTarget, spellTypeMask, spellPhaseMask, hitMask, nullptr, nullptr, nullptr);
 return true;
 }
 
 private:
 Unit* _victim;
 ObjectGuid _casterGuid;
};
 
void Spell::AddUnitTarget(Unit* target, uint32 effectMask, bool checkIfValid /*= true*/, bool implicit /*= true*/, Position const* losPosition /*= nullptr*/)
{
 for (SpellEffectInfo const& spellEffectInfo : m_spellInfo->GetEffects())
 if (!spellEffectInfo.IsEffect() || !CheckEffectTarget(target, spellEffectInfo, losPosition))
 effectMask &= ~(1 << spellEffectInfo.EffectIndex);
 
 // no effects left
 if (!effectMask)
 return;
 
 if (checkIfValid)
 if (m_spellInfo->CheckTarget(m_caster, target, implicit) != SPELL_CAST_OK) // skip stealth checks for AOE
 return;
 
 // Check for effect immune skip if immuned
 for (SpellEffectInfo const& spellEffectInfo : m_spellInfo->GetEffects())
 if (target->IsImmunedToSpellEffect(m_spellInfo, spellEffectInfo, m_caster))
 effectMask &= ~(1 << spellEffectInfo.EffectIndex);
 
 ObjectGuid targetGUID = target->GetGUID();
 
 // Lookup target in already in list
 auto ihit = std::find_if(std::begin(m_UniqueTargetInfo), std::end(m_UniqueTargetInfo), [targetGUID](TargetInfo const& target) { return target.TargetGUID == targetGUID; });
 if (ihit != std::end(m_UniqueTargetInfo)) // Found in list
 {
 // Immune effects removed from mask
 ihit->EffectMask |= effectMask;
 return;
 }
 
 // This is new target calculate data for him
 
 // Get spell hit result on target
 TargetInfo targetInfo;
 targetInfo.TargetGUID = targetGUID; // Store target GUID
 targetInfo.EffectMask = effectMask; // Store all effects not immune
 targetInfo.IsAlive = target->IsAlive();
 targetInfo.Damage = 0;
 targetInfo.Healing = 0;
 targetInfo.IsCrit = false;
 
 // Calculate hit result
 WorldObject* caster = m_originalCaster ? m_originalCaster : m_caster;
 targetInfo.MissCondition = caster->SpellHitResult(target, m_spellInfo, m_canReflect && !(IsPositive() && m_caster->IsFriendlyTo(target)));
 
 // Spell have speed - need calculate incoming time
 // Incoming time is zero for self casts. At least I think so.
 if (m_caster != target)
 {
 float hitDelay = m_spellInfo->LaunchDelay;
 WorldObject const* missileSource = m_caster;
 if (m_spellInfo->HasAttribute(SPELL_ATTR4_BOUNCY_CHAIN_MISSILES))
 {
 auto previousTargetItr = std::find_if(m_UniqueTargetInfo.rbegin(), m_UniqueTargetInfo.rend(), [effectMask](TargetInfo const& target)
 {
 return (target.EffectMask & effectMask) != 0;
 });
 if (previousTargetItr != std::rend(m_UniqueTargetInfo))
 {
 hitDelay = 0.0f; // this is not the first target in chain, LaunchDelay was already included
 
 if (WorldObject* previousTarget = ObjectAccessor::GetWorldObject(*m_caster, previousTargetItr->TargetGUID))
 missileSource = previousTarget;
 
 targetInfo.TimeDelay += previousTargetItr->TimeDelay;
 }
 }
 
 if (m_spellInfo->HasAttribute(SPELL_ATTR9_SPECIAL_DELAY_CALCULATION))
 hitDelay += m_spellInfo->Speed;
 else if (m_spellInfo->Speed > 0.0f)
 {
 // calculate spell incoming interval
 float dist = std::max(missileSource->GetDistance(target->GetPositionX(), target->GetPositionY(), target->GetPositionZ()), 5.0f);
 hitDelay += dist / m_spellInfo->Speed;
 }
 
 targetInfo.TimeDelay += uint64(std::floor(hitDelay * 1000.0f));
 }
 else
 targetInfo.TimeDelay = 0ULL;
 
 // If target reflect spell back to caster
 if (targetInfo.MissCondition == SPELL_MISS_REFLECT)
 {
 // Calculate reflected spell result on caster (shouldn't be able to reflect gameobject spells)
 Unit* unitCaster = ASSERT_NOTNULL(m_caster->ToUnit());
 targetInfo.ReflectResult = unitCaster->SpellHitResult(unitCaster, m_spellInfo, false); // can't reflect twice
 
 // Proc spell reflect aura when missile hits the original target
 target->m_Events.AddEvent(new ProcReflectDelayed(target, m_originalCasterGUID), target->m_Events.CalculateTime(Milliseconds(targetInfo.TimeDelay)));
 
 // Increase time interval for reflected spells by 1.5
 targetInfo.TimeDelay += targetInfo.TimeDelay >> 1;
 }
 else
 targetInfo.ReflectResult = SPELL_MISS_NONE;
 
 // Calculate minimum incoming time
 if (targetInfo.TimeDelay && (!m_delayMoment || m_delayMoment > targetInfo.TimeDelay))
 m_delayMoment = targetInfo.TimeDelay;
 
 // Add target to list
 m_UniqueTargetInfo.emplace_back(std::move(targetInfo));
}
 
void Spell::AddGOTarget(GameObject* go, uint32 effectMask)
{
 for (SpellEffectInfo const& spellEffectInfo : m_spellInfo->GetEffects())
 if (!spellEffectInfo.IsEffect() || !CheckEffectTarget(go, spellEffectInfo))
 effectMask &= ~(1 << spellEffectInfo.EffectIndex);
 
 // no effects left
 if (!effectMask)
 return;
 
 ObjectGuid targetGUID = go->GetGUID();
 
 // Lookup target in already in list
 auto ihit = std::find_if(std::begin(m_UniqueGOTargetInfo), std::end(m_UniqueGOTargetInfo), [targetGUID](GOTargetInfo const& target) { return target.TargetGUID == targetGUID; });
 if (ihit != std::end(m_UniqueGOTargetInfo)) // Found in list
 {
 // Add only effect mask
 ihit->EffectMask |= effectMask;
 return;
 }
 
 // This is new target calculate data for him
 
 GOTargetInfo target;
 target.TargetGUID = targetGUID;
 target.EffectMask = effectMask;
 
 // Spell have speed - need calculate incoming time
 if (static_cast<WorldObject*>(m_caster) != go)
 {
 float hitDelay = m_spellInfo->LaunchDelay;
 if (m_spellInfo->HasAttribute(SPELL_ATTR9_SPECIAL_DELAY_CALCULATION))
 hitDelay += m_spellInfo->Speed;
 else if (m_spellInfo->Speed > 0.0f)
 {
 // calculate spell incoming interval
 float dist = std::max(m_caster->GetDistance(go->GetPositionX(), go->GetPositionY(), go->GetPositionZ()), 5.0f);
 hitDelay += dist / m_spellInfo->Speed;
 }
 
 target.TimeDelay = uint64(std::floor(hitDelay * 1000.0f));
 }
 else
 target.TimeDelay = 0ULL;
 
 // Calculate minimum incoming time
 if (target.TimeDelay && (!m_delayMoment || m_delayMoment > target.TimeDelay))
 m_delayMoment = target.TimeDelay;
 
 // Add target to list
 m_UniqueGOTargetInfo.emplace_back(std::move(target));
}
 
void Spell::AddItemTarget(Item* item, uint32 effectMask)
{
 for (SpellEffectInfo const& spellEffectInfo : m_spellInfo->GetEffects())
 if (!spellEffectInfo.IsEffect() || !CheckEffectTarget(item, spellEffectInfo))
 effectMask &= ~(1 << spellEffectInfo.EffectIndex);
 
 // no effects left
 if (!effectMask)
 return;
 
 // Lookup target in already in list
 auto ihit = std::find_if(std::begin(m_UniqueItemInfo), std::end(m_UniqueItemInfo), [item](ItemTargetInfo const& target) { return target.TargetItem == item; });
 if (ihit != std::end(m_UniqueItemInfo)) // Found in list
 {
 // Add only effect mask
 ihit->EffectMask |= effectMask;
 return;
 }
 
 // This is new target add data
 
 ItemTargetInfo target;
 target.TargetItem = item;
 target.EffectMask = effectMask;
 
 m_UniqueItemInfo.emplace_back(std::move(target));
}
 
void Spell::AddCorpseTarget(Corpse* corpse, uint32 effectMask)
{
 for (SpellEffectInfo const& spellEffectInfo : m_spellInfo->GetEffects())
 if (!spellEffectInfo.IsEffect())
 effectMask &= ~(1 << spellEffectInfo.EffectIndex);
 
 // no effects left
 if (!effectMask)
 return;
 
 ObjectGuid targetGUID = corpse->GetGUID();
 
 // Lookup target in already in list
 auto ihit = std::find_if(std::begin(m_UniqueCorpseTargetInfo), std::end(m_UniqueCorpseTargetInfo), [targetGUID](CorpseTargetInfo const& target) { return target.TargetGUID == targetGUID; });
 if (ihit != std::end(m_UniqueCorpseTargetInfo)) // Found in list
 {
 // Add only effect mask
 ihit->EffectMask |= effectMask;
 return;
 }
 
 // This is new target calculate data for him
 CorpseTargetInfo target;
 target.TargetGUID = targetGUID;
 target.EffectMask = effectMask;
 
 // Spell have speed - need calculate incoming time
 if (m_caster != corpse)
 {
 float hitDelay = m_spellInfo->LaunchDelay;
 if (m_spellInfo->HasAttribute(SPELL_ATTR9_SPECIAL_DELAY_CALCULATION))
 hitDelay += m_spellInfo->Speed;
 else if (m_spellInfo->Speed > 0.0f)
 {
 // calculate spell incoming interval
 float dist = std::max(m_caster->GetDistance(corpse->GetPositionX(), corpse->GetPositionY(), corpse->GetPositionZ()), 5.0f);
 hitDelay += dist / m_spellInfo->Speed;
 }
 
 target.TimeDelay = uint64(std::floor(hitDelay * 1000.0f));
 }
 else
 target.TimeDelay = 0LL;
 
 // Calculate minimum incoming time
 if (target.TimeDelay && (!m_delayMoment || m_delayMoment > target.TimeDelay))
 m_delayMoment = target.TimeDelay;
 
 // Add target to list
 m_UniqueCorpseTargetInfo.emplace_back(std::move(target));
}
 
void Spell::AddDestTarget(SpellDestination const& dest, uint32 effIndex)
{
 m_destTargets[effIndex] = dest;
}
 
int32 Spell::GetUnitTargetIndexForEffect(ObjectGuid const& target, SpellEffIndex effect) const
{
 int32 index = 0;
 for (TargetInfo const& uniqueTargetInfo : m_UniqueTargetInfo)
 {
 if (uniqueTargetInfo.MissCondition == SPELL_MISS_NONE && uniqueTargetInfo.EffectMask & (1 << effect))
 {
 if (uniqueTargetInfo.TargetGUID == target)
 break;
 
 ++index;
 }
 }
 
 return index;
}
 
int64 Spell::GetUnitTargetCountForEffect(SpellEffIndex effect) const
{
 return std::count_if(m_UniqueTargetInfo.begin(), m_UniqueTargetInfo.end(), [effect](TargetInfo const& targetInfo)
 {
 return targetInfo.MissCondition == SPELL_MISS_NONE && targetInfo.EffectMask & (1 << effect);
 });
}
 
int64 Spell::GetGameObjectTargetCountForEffect(SpellEffIndex effect) const
{
 return std::count_if(m_UniqueGOTargetInfo.begin(), m_UniqueGOTargetInfo.end(), [effect](GOTargetInfo const& targetInfo)
 {
 return targetInfo.EffectMask & (1 << effect);
 });
}
 
int64 Spell::GetItemTargetCountForEffect(SpellEffIndex effect) const
{
 return std::count_if(m_UniqueItemInfo.begin(), m_UniqueItemInfo.end(), [effect](ItemTargetInfo const& targetInfo)
 {
 return targetInfo.EffectMask & (1 << effect);
 });
}
 
int64 Spell::GetCorpseTargetCountForEffect(SpellEffIndex effect) const
{
 return std::count_if(m_UniqueCorpseTargetInfo.begin(), m_UniqueCorpseTargetInfo.end(), [effect](CorpseTargetInfo const& targetInfo)
 {
 return targetInfo.EffectMask & (1 << effect);
 });
}
 
void Spell::TargetInfo::PreprocessTarget(Spell* spell)
{
 Unit* unit = spell->m_caster->GetGUID() == TargetGUID ? spell->m_caster->ToUnit() : ObjectAccessor::GetUnit(*spell->m_caster, TargetGUID);
 if (!unit)
 return;
 
 // Need init unitTarget by default unit (can changed in code on reflect)
 spell->unitTarget = unit;
 
 // Reset damage/healing counter
 spell->m_damage = Damage;
 spell->m_healing = Healing;
 
 _spellHitTarget = nullptr;
 if (MissCondition == SPELL_MISS_NONE || (MissCondition == SPELL_MISS_BLOCK && !spell->GetSpellInfo()->HasAttribute(SPELL_ATTR3_COMPLETELY_BLOCKED)))
 _spellHitTarget = unit;
 else if (MissCondition == SPELL_MISS_REFLECT && ReflectResult == SPELL_MISS_NONE)
 _spellHitTarget = spell->m_caster->ToUnit();
 
 if (spell->m_originalCaster && MissCondition != SPELL_MISS_EVADE && !spell->m_originalCaster->IsFriendlyTo(unit) && (!spell->m_spellInfo->IsPositive() || spell->m_spellInfo->HasEffect(SPELL_EFFECT_DISPEL)) && (spell->m_spellInfo->HasInitialAggro() || unit->IsEngaged()))
 unit->SetInCombatWith(spell->m_originalCaster);
 
 // if target is flagged for pvp also flag caster if a player
 // but respect current pvp rules (buffing/healing npcs flagged for pvp only flags you if they are in combat)
 _enablePVP = (MissCondition == SPELL_MISS_NONE || spell->m_spellInfo->HasAttribute(SPELL_ATTR3_PVP_ENABLING))
 && unit->IsPvP() && (unit->IsInCombat() || unit->IsCharmedOwnedByPlayerOrPlayer()) && spell->m_caster->GetTypeId() == TYPEID_PLAYER; // need to check PvP state before spell effects, but act on it afterwards
 
 if (_spellHitTarget)
 {
 SpellMissInfo missInfo = spell->PreprocessSpellHit(_spellHitTarget, *this);
 if (missInfo != SPELL_MISS_NONE)
 {
 if (missInfo != SPELL_MISS_MISS)
 spell->m_caster->SendSpellMiss(unit, spell->m_spellInfo->Id, missInfo);
 spell->m_damage = 0;
 spell->m_healing = 0;
 _spellHitTarget = nullptr;
 }
 }
 
 spell->CallScriptOnHitHandlers();
 
 // scripts can modify damage/healing for current target, save them
 Damage = spell->m_damage;
 Healing = spell->m_healing;
}
 
void Spell::TargetInfo::DoTargetSpellHit(Spell* spell, SpellEffectInfo const& spellEffectInfo)
{
 Unit* unit = spell->m_caster->GetGUID() == TargetGUID ? spell->m_caster->ToUnit() : ObjectAccessor::GetUnit(*spell->m_caster, TargetGUID);
 if (!unit)
 return;
 
 // Need init unitTarget by default unit (can changed in code on reflect)
 // Or on missInfo != SPELL_MISS_NONE unitTarget undefined (but need in trigger subsystem)
 spell->unitTarget = unit;
 spell->targetMissInfo = MissCondition;
 
 // Reset damage/healing counter
 spell->m_damage = Damage;
 spell->m_healing = Healing;
 
 if (unit->IsAlive() != IsAlive)
 return;
 
 if (!spell->m_spellInfo->HasAttribute(SPELL_ATTR8_IGNORE_SANCTUARY) && spell->getState() == SPELL_STATE_DELAYED && !spell->IsPositive() && (GameTime::GetGameTimeMS() - TimeDelay) <= unit->m_lastSanctuaryTime)
 return; // No missinfo in that case
 
 if (_spellHitTarget)
 spell->DoSpellEffectHit(_spellHitTarget, spellEffectInfo, *this);
 
 // scripts can modify damage/healing for current target, save them
 Damage = spell->m_damage;
 Healing = spell->m_healing;
}
 
void Spell::TargetInfo::DoDamageAndTriggers(Spell* spell)
{
 Unit* unit = spell->m_caster->GetGUID() == TargetGUID ? spell->m_caster->ToUnit() : ObjectAccessor::GetUnit(*spell->m_caster, TargetGUID);
 if (!unit)
 return;
 
 // other targets executed before this one changed pointer
 spell->unitTarget = unit;
 if (_spellHitTarget)
 spell->unitTarget = _spellHitTarget;
 
 // Reset damage/healing counter
 spell->m_damage = Damage;
 spell->m_healing = Healing;
 
 // Get original caster (if exist) and calculate damage/healing from him data
 // Skip if m_originalCaster not available
 Unit* caster = spell->m_originalCaster ? spell->m_originalCaster : spell->m_caster->ToUnit();
 if (caster)
 {
 // Fill base trigger info
 ProcFlagsInit procAttacker = spell->m_procAttacker;
 ProcFlagsInit procVictim = spell->m_procVictim;
 ProcFlagsSpellType procSpellType = PROC_SPELL_TYPE_NONE;
 ProcFlagsHit hitMask = PROC_HIT_NONE;
 
 // Spells with this flag cannot trigger if effect is cast on self
 bool const canEffectTrigger = spell->unitTarget->CanProc();
 
 // Trigger info was not filled in Spell::prepareDataForTriggerSystem - we do it now
 if (canEffectTrigger && !procAttacker && !procVictim)
 {
 bool positive = true;
 if (spell->m_damage > 0)
 positive = false;
 else if (!spell->m_healing)
 {
 for (uint8 i = 0; i < spell->m_spellInfo->GetEffects().size(); ++i)
 {
 // in case of immunity, check all effects to choose correct procFlags, as none has technically hit
 if (EffectMask && !(EffectMask & (1 << i)))
 continue;
 
 if (!spell->m_spellInfo->IsPositiveEffect(i))
 {
 positive = false;
 break;
 }
 }
 }
 
 switch (spell->m_spellInfo->DmgClass)
 {
 case SPELL_DAMAGE_CLASS_NONE:
 case SPELL_DAMAGE_CLASS_MAGIC:
 if (spell->m_spellInfo->HasAttribute(SPELL_ATTR3_TREAT_AS_PERIODIC))
 {
 if (positive)
 {
 procAttacker |= PROC_FLAG_DEAL_HELPFUL_PERIODIC;
 procVictim |= PROC_FLAG_TAKE_HELPFUL_PERIODIC;
 }
 else
 {
 procAttacker |= PROC_FLAG_DEAL_HARMFUL_PERIODIC;
 procVictim |= PROC_FLAG_TAKE_HARMFUL_PERIODIC;
 }
 }
 else if (spell->m_spellInfo->HasAttribute(SPELL_ATTR0_IS_ABILITY))
 {
 if (positive)
 {
 procAttacker |= PROC_FLAG_DEAL_HELPFUL_ABILITY;
 procVictim |= PROC_FLAG_TAKE_HELPFUL_ABILITY;
 }
 else
 {
 procAttacker |= PROC_FLAG_DEAL_HARMFUL_ABILITY;
 procVictim |= PROC_FLAG_TAKE_HARMFUL_ABILITY;
 }
 }
 else
 {
 if (positive)
 {
 procAttacker |= PROC_FLAG_DEAL_HELPFUL_SPELL;
 procVictim |= PROC_FLAG_TAKE_HELPFUL_SPELL;
 }
 else
 {
 procAttacker |= PROC_FLAG_DEAL_HARMFUL_SPELL;
 procVictim |= PROC_FLAG_TAKE_HARMFUL_SPELL;
 }
 }
 break;
 }
 }
 
 // All calculated do it!
 // Do healing
 bool hasHealing = false;
 std::unique_ptr<DamageInfo> spellDamageInfo;
 std::unique_ptr<HealInfo> healInfo;
 if (spell->m_healing > 0)
 {
 hasHealing = true;
 uint32 addhealth = spell->m_healing;
 if (IsCrit)
 {
 hitMask |= PROC_HIT_CRITICAL;
 addhealth = Unit::SpellCriticalHealingBonus(caster, spell->m_spellInfo, addhealth, nullptr);
 }
 else
 hitMask |= PROC_HIT_NORMAL;
 
 healInfo = std::make_unique<HealInfo>(caster, spell->unitTarget, addhealth, spell->m_spellInfo, spell->m_spellInfo->GetSchoolMask());
 caster->HealBySpell(*healInfo, IsCrit);
 spell->unitTarget->GetThreatManager().ForwardThreatForAssistingMe(caster, float(healInfo->GetEffectiveHeal()) * 0.5f, spell->m_spellInfo);
 spell->m_healing = healInfo->GetEffectiveHeal();
 
 procSpellType |= PROC_SPELL_TYPE_HEAL;
 }
 
 // Do damage
 bool hasDamage = false;
 if (spell->m_damage > 0)
 {
 hasDamage = true;
 // Fill base damage struct (unitTarget - is real spell target)
 SpellNonMeleeDamage damageInfo(caster, spell->unitTarget, spell->m_spellInfo, spell->m_SpellVisual, spell->m_spellSchoolMask, spell->m_castId);
 // Check damage immunity
 if (spell->unitTarget->IsImmunedToDamage(spell->m_spellInfo))
 {
 hitMask = PROC_HIT_IMMUNE;
 spell->m_damage = 0;
 
 // no packet found in sniffs
 }
 else
 {
 caster->SetLastDamagedTargetGuid(spell->unitTarget->GetGUID());
 
 // Add bonuses and fill damageInfo struct
 caster->CalculateSpellDamageTaken(&damageInfo, spell->m_damage, spell->m_spellInfo, spell->m_attackType, IsCrit, MissCondition == SPELL_MISS_BLOCK, spell);
 Unit::DealDamageMods(damageInfo.attacker, damageInfo.target, damageInfo.damage, &damageInfo.absorb);
 
 hitMask |= createProcHitMask(&damageInfo, MissCondition);
 procVictim |= PROC_FLAG_TAKE_ANY_DAMAGE;
 
 // sparring
 if (damageInfo.target != damageInfo.attacker)
 {
 if (Creature* victimCreature = damageInfo.target->ToCreature())
 damageInfo.damage = victimCreature->CalculateDamageForSparring(damageInfo.attacker, damageInfo.damage);
 }
 spell->m_damage = damageInfo.damage;
 
 caster->DealSpellDamage(&damageInfo, true);
 
 // Send log damage message to client
 caster->SendSpellNonMeleeDamageLog(&damageInfo);
 }
 
 // Do triggers for unit
 if (canEffectTrigger)
 {
 spellDamageInfo = std::make_unique<DamageInfo>(damageInfo, SPELL_DIRECT_DAMAGE, spell->m_attackType, hitMask);
 procSpellType |= PROC_SPELL_TYPE_DAMAGE;
 }
 }
 
 // Passive spell hits/misses or active spells only misses (only triggers)
 if (!hasHealing && !hasDamage)
 {
 // Fill base damage struct (unitTarget - is real spell target)
 SpellNonMeleeDamage damageInfo(caster, spell->unitTarget, spell->m_spellInfo, spell->m_SpellVisual, spell->m_spellSchoolMask);
 hitMask |= createProcHitMask(&damageInfo, MissCondition);
 // Do triggers for unit
 if (canEffectTrigger)
 {
 spellDamageInfo = std::make_unique<DamageInfo>(damageInfo, NODAMAGE, spell->m_attackType, hitMask);
 procSpellType |= PROC_SPELL_TYPE_NO_DMG_HEAL;
 }
 
 // Failed Pickpocket, reveal rogue
 if (MissCondition == SPELL_MISS_RESIST && spell->m_spellInfo->HasAttribute(SPELL_ATTR1_FAILURE_BREAKS_STEALTH) && spell->unitTarget->GetTypeId() == TYPEID_UNIT)
 {
 Unit* unitCaster = ASSERT_NOTNULL(spell->m_caster->ToUnit());
 unitCaster->RemoveAurasWithInterruptFlags(SpellAuraInterruptFlags::Interacting);
 spell->unitTarget->ToCreature()->EngageWithTarget(unitCaster);
 }
 }
 
 // Do triggers for unit
 if (canEffectTrigger)
 {
 Unit::ProcSkillsAndAuras(caster, spell->unitTarget, procAttacker, procVictim, procSpellType, PROC_SPELL_PHASE_HIT, hitMask, spell, spellDamageInfo.get(), healInfo.get());
 
 // item spells (spell hit of non-damage spell may also activate items, for example seal of corruption hidden hit)
 if (caster->GetTypeId() == TYPEID_PLAYER && (procSpellType & (PROC_SPELL_TYPE_DAMAGE | PROC_SPELL_TYPE_NO_DMG_HEAL)))
 {
 if (spell->m_spellInfo->DmgClass == SPELL_DAMAGE_CLASS_MELEE || spell->m_spellInfo->DmgClass == SPELL_DAMAGE_CLASS_RANGED)
 if (!spell->m_spellInfo->HasAttribute(SPELL_ATTR0_CANCELS_AUTO_ATTACK_COMBAT) && !spell->m_spellInfo->HasAttribute(SPELL_ATTR4_SUPPRESS_WEAPON_PROCS))
 caster->ToPlayer()->CastItemCombatSpell(*spellDamageInfo);
 }
 }
 
 // set hitmask for finish procs
 spell->m_hitMask |= hitMask;
 spell->m_procSpellType |= procSpellType;
 
 // _spellHitTarget can be null if spell is missed in DoSpellHitOnUnit
 if (MissCondition != SPELL_MISS_EVADE && _spellHitTarget && !spell->m_caster->IsFriendlyTo(unit) && (!spell->IsPositive() || spell->m_spellInfo->HasEffect(SPELL_EFFECT_DISPEL)))
 {
 if (Unit* unitCaster = spell->m_caster->ToUnit())
 {
 unitCaster->AtTargetAttacked(unit, spell->m_spellInfo->HasInitialAggro());
 
 if (spell->m_spellInfo->HasAttribute(SPELL_ATTR6_TAPS_IMMEDIATELY))
 if (Creature* targetCreature = unit->ToCreature())
 if (unitCaster->IsPlayer())
 targetCreature->SetTappedBy(unitCaster);
 }
 
 if (!spell->m_spellInfo->HasAttribute(SPELL_ATTR3_DO_NOT_TRIGGER_TARGET_STAND) && !unit->IsStandState())
 unit->SetStandState(UNIT_STAND_STATE_STAND);
 }
 
 // Check for SPELL_ATTR7_INTERRUPT_ONLY_NONPLAYER
 if (MissCondition == SPELL_MISS_NONE && spell->m_spellInfo->HasAttribute(SPELL_ATTR7_CAN_CAUSE_INTERRUPT) && unit->GetTypeId() != TYPEID_PLAYER)
 caster->CastSpell(unit, SPELL_INTERRUPT_NONPLAYER, spell);
 }
 
 if (_spellHitTarget)
 {
 //AI functions
 if (Creature* cHitTarget = _spellHitTarget->ToCreature())
 if (CreatureAI* hitTargetAI = cHitTarget->AI())
 hitTargetAI->SpellHit(spell->m_caster, spell->m_spellInfo);
 
 if (spell->m_caster->GetTypeId() == TYPEID_UNIT && spell->m_caster->ToCreature()->IsAIEnabled())
 spell->m_caster->ToCreature()->AI()->SpellHitTarget(_spellHitTarget, spell->m_spellInfo);
 else if (spell->m_caster->GetTypeId() == TYPEID_GAMEOBJECT && spell->m_caster->ToGameObject()->AI())
 spell->m_caster->ToGameObject()->AI()->SpellHitTarget(_spellHitTarget, spell->m_spellInfo);
 
 if (HitAura)
 {
 if (AuraApplication* aurApp = HitAura->GetApplicationOfTarget(_spellHitTarget->GetGUID()))
 {
 // only apply unapplied effects (for reapply case)
 uint32 effMask = EffectMask & aurApp->GetEffectsToApply();
 for (uint8 i = 0; i < spell->m_spellInfo->GetEffects().size(); ++i)
 if ((effMask & (1 << i)) && aurApp->HasEffect(i))
 effMask &= ~(1 << i);
 
 if (effMask)
 _spellHitTarget->_ApplyAura(aurApp, effMask);
 
 if (aurApp->IsNeedClientUpdate() && aurApp->GetRemoveMode() == AURA_REMOVE_NONE)
 {
 aurApp->ClientUpdate(false);
 _spellHitTarget->RemoveVisibleAuraUpdate(aurApp);
 }
 }
 }
 
 // Needs to be called after dealing damage/healing to not remove breaking on damage auras
 spell->DoTriggersOnSpellHit(_spellHitTarget);
 }
 
 if (_enablePVP)
 spell->m_caster->ToPlayer()->UpdatePvP(true);
 
 spell->_spellAura = HitAura;
 spell->CallScriptAfterHitHandlers();
 spell->_spellAura = nullptr;
}
 
void Spell::GOTargetInfo::DoTargetSpellHit(Spell* spell, SpellEffectInfo const& spellEffectInfo)
{
 GameObject* go = spell->m_caster->GetGUID() == TargetGUID ? spell->m_caster->ToGameObject() : ObjectAccessor::GetGameObject(*spell->m_caster, TargetGUID);
 if (!go)
 return;
 
 spell->CallScriptBeforeHitHandlers(SPELL_MISS_NONE);
 
 spell->HandleEffects(nullptr, nullptr, go, nullptr, spellEffectInfo, SPELL_EFFECT_HANDLE_HIT_TARGET);
 
 // AI functions
 if (go->AI())
 go->AI()->SpellHit(spell->m_caster, spell->m_spellInfo);
 
 if (spell->m_caster->GetTypeId() == TYPEID_UNIT && spell->m_caster->ToCreature()->IsAIEnabled())
 spell->m_caster->ToCreature()->AI()->SpellHitTarget(go, spell->m_spellInfo);
 else if (spell->m_caster->GetTypeId() == TYPEID_GAMEOBJECT && spell->m_caster->ToGameObject()->AI())
 spell->m_caster->ToGameObject()->AI()->SpellHitTarget(go, spell->m_spellInfo);
 
 spell->CallScriptOnHitHandlers();
 spell->CallScriptAfterHitHandlers();
}
 
void Spell::ItemTargetInfo::DoTargetSpellHit(Spell* spell, SpellEffectInfo const& spellEffectInfo)
{
 spell->CallScriptBeforeHitHandlers(SPELL_MISS_NONE);
 
 spell->HandleEffects(nullptr, TargetItem, nullptr, nullptr, spellEffectInfo, SPELL_EFFECT_HANDLE_HIT_TARGET);
 
 spell->CallScriptOnHitHandlers();
 spell->CallScriptAfterHitHandlers();
}
 
void Spell::CorpseTargetInfo::DoTargetSpellHit(Spell* spell, SpellEffectInfo const& spellEffectInfo)
{
 Corpse* corpse = ObjectAccessor::GetCorpse(*spell->m_caster, TargetGUID);
 if (!corpse)
 return;
 
 spell->CallScriptBeforeHitHandlers(SPELL_MISS_NONE);
 
 spell->HandleEffects(nullptr, nullptr, nullptr, corpse, spellEffectInfo, SPELL_EFFECT_HANDLE_HIT_TARGET);
 
 spell->CallScriptOnHitHandlers();
 spell->CallScriptAfterHitHandlers();
}
 
SpellMissInfo Spell::PreprocessSpellHit(Unit* unit, TargetInfo& hitInfo)
{
 if (!unit)
 return SPELL_MISS_EVADE;
 
 // Target may have begun evading between launch and hit phases - re-check now
 if (Creature* creatureTarget = unit->ToCreature())
 if (creatureTarget->IsEvadingAttacks())
 return SPELL_MISS_EVADE;
 
 // For delayed spells immunity may be applied between missile launch and hit - check immunity for that case
 if (m_spellInfo->HasHitDelay() && unit->IsImmunedToSpell(m_spellInfo, m_caster))
 return SPELL_MISS_IMMUNE;
 
 CallScriptBeforeHitHandlers(hitInfo.MissCondition);
 
 if (Player* player = unit->ToPlayer())
 {
 player->FailCriteria(CriteriaFailEvent::BeSpellTarget, m_spellInfo->Id);
 player->StartCriteria(CriteriaStartEvent::BeSpellTarget, m_spellInfo->Id);
 player->UpdateCriteria(CriteriaType::BeSpellTarget, m_spellInfo->Id, 0, 0, m_caster);
 }
 
 if (Player* player = m_caster->ToPlayer())
 player->UpdateCriteria(CriteriaType::LandTargetedSpellOnTarget, m_spellInfo->Id, 0, 0, unit);
 
 if (m_caster != unit)
 {
 // Recheck UNIT_FLAG_NON_ATTACKABLE for delayed spells
 if (m_spellInfo->HasHitDelay() && unit->HasUnitFlag(UNIT_FLAG_NON_ATTACKABLE) && unit->GetCharmerOrOwnerGUID() != m_caster->GetGUID())
 return SPELL_MISS_EVADE;
 
 if (m_caster->IsValidAttackTarget(unit, m_spellInfo))
 unit->RemoveAurasWithInterruptFlags(SpellAuraInterruptFlags::HostileActionReceived);
 else if (m_caster->IsFriendlyTo(unit))
 {
 // for delayed spells ignore negative spells (after duel end) for friendly targets
 if (m_spellInfo->HasHitDelay() && unit->GetTypeId() == TYPEID_PLAYER && !IsPositive() && !m_caster->IsValidAssistTarget(unit, m_spellInfo))
 return SPELL_MISS_EVADE;
 
 // assisting case, healing and resurrection
 if (unit->HasUnitState(UNIT_STATE_ATTACK_PLAYER))
 {
 if (Player* playerOwner = m_caster->GetCharmerOrOwnerPlayerOrPlayerItself())
 {
 playerOwner->SetContestedPvP();
 playerOwner->UpdatePvP(true);
 }
 }
 
 if (m_originalCaster && unit->IsInCombat() && m_spellInfo->HasInitialAggro())
 {
 if (m_originalCaster->HasUnitFlag(UNIT_FLAG_PLAYER_CONTROLLED)) // only do explicit combat forwarding for PvP enabled units
 m_originalCaster->GetCombatManager().InheritCombatStatesFrom(unit); // for creature v creature combat, the threat forward does it for us
 unit->GetThreatManager().ForwardThreatForAssistingMe(m_originalCaster, 0.0f, nullptr, true);
 }
 }
 }
 
 // original caster for auras
 WorldObject* origCaster = m_caster;
 if (m_originalCaster)
 origCaster = m_originalCaster;
 
 // check immunity due to diminishing returns
 if (Aura::BuildEffectMaskForOwner(m_spellInfo, MAX_EFFECT_MASK, unit))
 {
 for (SpellEffectInfo const& auraSpellEffect : m_spellInfo->GetEffects())
 hitInfo.AuraBasePoints[auraSpellEffect.EffectIndex] = (m_spellValue->CustomBasePointsMask & (1 << auraSpellEffect.EffectIndex))
 ? m_spellValue->EffectBasePoints[auraSpellEffect.EffectIndex]
 : auraSpellEffect.CalcBaseValue(m_originalCaster, unit, m_castItemEntry, m_castItemLevel);
 
 // Get Data Needed for Diminishing Returns, some effects may have multiple auras, so this must be done on spell hit, not aura add
 hitInfo.DRGroup = m_spellInfo->GetDiminishingReturnsGroupForSpell();
 
 DiminishingLevels diminishLevel = DIMINISHING_LEVEL_1;
 if (hitInfo.DRGroup)
 {
 diminishLevel = unit->GetDiminishing(hitInfo.DRGroup);
 DiminishingReturnsType type = m_spellInfo->GetDiminishingReturnsGroupType();
 // Increase Diminishing on unit, current informations for actually casts will use values above
 if (type == DRTYPE_ALL || (type == DRTYPE_PLAYER && unit->IsAffectedByDiminishingReturns()))
 unit->IncrDiminishing(m_spellInfo);
 }
 
 // Now Reduce spell duration using data received at spell hit
 // check whatever effects we're going to apply, diminishing returns only apply to negative aura effects
 hitInfo.Positive = true;
 if (origCaster == unit || !origCaster->IsFriendlyTo(unit))
 {
 for (SpellEffectInfo const& auraSpellEffect : m_spellInfo->GetEffects())
 {
 // mod duration only for effects applying aura!
 if (hitInfo.EffectMask & (1 << auraSpellEffect.EffectIndex) &&
 auraSpellEffect.IsUnitOwnedAuraEffect() &&
 !m_spellInfo->IsPositiveEffect(auraSpellEffect.EffectIndex))
 {
 hitInfo.Positive = false;
 break;
 }
 }
 }
 
 hitInfo.AuraDuration = Aura::CalcMaxDuration(m_spellInfo, origCaster, &m_powerCost);
 
 // unit is immune to aura if it was diminished to 0 duration
 if (!hitInfo.Positive && !unit->ApplyDiminishingToDuration(m_spellInfo, hitInfo.AuraDuration, origCaster, diminishLevel))
 if (std::all_of(std::begin(m_spellInfo->GetEffects()), std::end(m_spellInfo->GetEffects()), [](SpellEffectInfo const& effInfo) { return !effInfo.IsEffect() || effInfo.Effect == SPELL_EFFECT_APPLY_AURA; }))
 return SPELL_MISS_IMMUNE;
 }
 
 return SPELL_MISS_NONE;
}
 
void Spell::DoSpellEffectHit(Unit* unit, SpellEffectInfo const& spellEffectInfo, TargetInfo& hitInfo)
{
 if (uint32 aura_effmask = Aura::BuildEffectMaskForOwner(m_spellInfo, 1 << spellEffectInfo.EffectIndex, unit))
 {
 WorldObject* caster = m_caster;
 if (m_originalCaster)
 caster = m_originalCaster;
 
 if (caster)
 {
 bool refresh = false;
 
 if (!hitInfo.HitAura)
 {
 bool const resetPeriodicTimer = (m_spellInfo->StackAmount < 2) && !(_triggeredCastFlags & TRIGGERED_DONT_RESET_PERIODIC_TIMER);
 uint32 const allAuraEffectMask = Aura::BuildEffectMaskForOwner(m_spellInfo, MAX_EFFECT_MASK, unit);
 
 AuraCreateInfo createInfo(m_castId, m_spellInfo, GetCastDifficulty(), allAuraEffectMask, unit);
 createInfo
 .SetCasterGUID(caster->GetGUID())
 .SetBaseAmount(&hitInfo.AuraBasePoints[0])
 .SetCastItem(m_castItemGUID, m_castItemEntry, m_castItemLevel)
 .SetPeriodicReset(resetPeriodicTimer)
 .SetOwnerEffectMask(aura_effmask)
 .IsRefresh = &refresh;
 
 if (Aura* aura = Aura::TryRefreshStackOrCreate(createInfo, false))
 {
 hitInfo.HitAura = aura->ToUnitAura();
 
 // Set aura stack amount to desired value
 if (m_spellValue->AuraStackAmount > 1)
 {
 if (!refresh)
 hitInfo.HitAura->SetStackAmount(m_spellValue->AuraStackAmount);
 else
 hitInfo.HitAura->ModStackAmount(m_spellValue->AuraStackAmount);
 }
 
 hitInfo.HitAura->SetDiminishGroup(hitInfo.DRGroup);
 
 if (!m_spellValue->Duration)
 {
 hitInfo.AuraDuration = caster->ModSpellDuration(m_spellInfo, unit, hitInfo.AuraDuration, hitInfo.Positive, hitInfo.HitAura->GetEffectMask());
 
 if (hitInfo.AuraDuration > 0)
 {
 hitInfo.AuraDuration *= m_spellValue->DurationMul;
 
 // Haste modifies duration of channeled spells
 if (m_spellInfo->IsChanneled())
 caster->ModSpellDurationTime(m_spellInfo, hitInfo.AuraDuration, this);
 else if (m_spellInfo->HasAttribute(SPELL_ATTR8_HASTE_AFFECTS_DURATION))
 {
 int32 origDuration = hitInfo.AuraDuration;
 hitInfo.AuraDuration = 0;
 for (AuraEffect const* auraEff : hitInfo.HitAura->GetAuraEffects())
 if (auraEff)
 if (int32 period = auraEff->GetPeriod()) // period is hastened by UNIT_MOD_CAST_SPEED
 hitInfo.AuraDuration = std::max(std::max(origDuration / period, 1) * period, hitInfo.AuraDuration);
 
 // if there is no periodic effect
 if (!hitInfo.AuraDuration)
 hitInfo.AuraDuration = int32(origDuration * m_originalCaster->m_unitData->ModCastingSpeed);
 }
 }
 }
 else
 hitInfo.AuraDuration = *m_spellValue->Duration;
 
 if (hitInfo.AuraDuration != hitInfo.HitAura->GetMaxDuration())
 {
 hitInfo.HitAura->SetMaxDuration(hitInfo.AuraDuration);
 hitInfo.HitAura->SetDuration(hitInfo.AuraDuration);
 }
 
 if (refresh)
 hitInfo.HitAura->AddStaticApplication(unit, aura_effmask);
 }
 }
 else
 hitInfo.HitAura->AddStaticApplication(unit, aura_effmask);
 }
 }
 
 _spellAura = hitInfo.HitAura;
 HandleEffects(unit, nullptr, nullptr, nullptr, spellEffectInfo, SPELL_EFFECT_HANDLE_HIT_TARGET);
 _spellAura = nullptr;
}
 
void Spell::DoTriggersOnSpellHit(Unit* unit)
{
 // handle SPELL_AURA_ADD_TARGET_TRIGGER auras
 // this is executed after spell proc spells on target hit
 // spells are triggered for each hit spell target
 // info confirmed with retail sniffs of permafrost and shadow weaving
 if (!m_hitTriggerSpells.empty())
 {
 int32 _duration = 0;
 for (auto i = m_hitTriggerSpells.begin(); i != m_hitTriggerSpells.end(); ++i)
 {
 if (CanExecuteTriggersOnHit(unit, i->triggeredByAura) && roll_chance_i(i->chance))
 {
 m_caster->CastSpell(unit, i->triggeredSpell->Id, CastSpellExtraArgs(TRIGGERED_FULL_MASK)
 .SetTriggeringSpell(this)
 .SetCastDifficulty(i->triggeredSpell->Difficulty));
 TC_LOG_DEBUG("spells", "Spell {} triggered spell {} by SPELL_AURA_ADD_TARGET_TRIGGER aura", m_spellInfo->Id, i->triggeredSpell->Id);
 
 // SPELL_AURA_ADD_TARGET_TRIGGER auras shouldn't trigger auras without duration
 // set duration of current aura to the triggered spell
 if (i->triggeredSpell->GetDuration() == -1)
 {
 if (Aura* triggeredAur = unit->GetAura(i->triggeredSpell->Id, m_caster->GetGUID()))
 {
 // get duration from aura-only once
 if (!_duration)
 {
 Aura* aur = unit->GetAura(m_spellInfo->Id, m_caster->GetGUID());
 _duration = aur ? aur->GetDuration() : -1;
 }
 triggeredAur->SetDuration(_duration);
 }
 }
 }
 }
 }
 
 // trigger linked auras remove/apply
 if (std::vector<int32> const* spellTriggered = sSpellMgr->GetSpellLinked(SPELL_LINK_HIT, m_spellInfo->Id))
 {
 for (std::vector<int32>::const_iterator i = spellTriggered->begin(); i != spellTriggered->end(); ++i)
 {
 if (*i < 0)
 unit->RemoveAurasDueToSpell(-(*i));
 else
 unit->CastSpell(unit, *i, CastSpellExtraArgs(TRIGGERED_FULL_MASK)
 .SetOriginalCaster(m_caster->GetGUID())
 .SetTriggeringSpell(this));
 }
 }
}
 
bool Spell::UpdateChanneledTargetList()
{
 // Not need check return true
 if (m_channelTargetEffectMask == 0)
 return true;
 
 uint32 channelTargetEffectMask = m_channelTargetEffectMask;
 uint32 channelAuraMask = 0;
 for (SpellEffectInfo const& spellEffectInfo : m_spellInfo->GetEffects())
 if (spellEffectInfo.IsEffect(SPELL_EFFECT_APPLY_AURA))
 channelAuraMask |= 1 << spellEffectInfo.EffectIndex;
 
 channelAuraMask &= channelTargetEffectMask;
 
 float range = 0;
 if (channelAuraMask)
 {
 range = m_spellInfo->GetMaxRange(IsPositive());
 if (Player* modOwner = m_caster->GetSpellModOwner())
 modOwner->ApplySpellMod(m_spellInfo, SpellModOp::Range, range, this);
 
 // add little tolerance level
 range += std::min(MAX_SPELL_RANGE_TOLERANCE, range*0.1f); // 10% but no more than MAX_SPELL_RANGE_TOLERANCE
 }
 
 for (TargetInfo& targetInfo : m_UniqueTargetInfo)
 {
 if (targetInfo.MissCondition == SPELL_MISS_NONE && (channelTargetEffectMask & targetInfo.EffectMask))
 {
 Unit* unit = m_caster->GetGUID() == targetInfo.TargetGUID ? m_caster->ToUnit() : ObjectAccessor::GetUnit(*m_caster, targetInfo.TargetGUID);
 if (!unit)
 {
 if (Unit* unitCaster =m_caster->ToUnit())
 unitCaster->RemoveChannelObject(targetInfo.TargetGUID);
 continue;
 }
 
 if (IsValidDeadOrAliveTarget(unit))
 {
 if (channelAuraMask & targetInfo.EffectMask)
 {
 if (AuraApplication* aurApp = unit->GetAuraApplication(m_spellInfo->Id, m_originalCasterGUID))
 {
 if (m_caster != unit && !m_caster->IsWithinDistInMap(unit, range))
 {
 targetInfo.EffectMask &= ~aurApp->GetEffectMask();
 unit->RemoveAura(aurApp);
 if (Unit* unitCaster = m_caster->ToUnit())
 unitCaster->RemoveChannelObject(targetInfo.TargetGUID);
 continue;
 }
 }
 else // aura is dispelled
 {
 if (Unit* unitCaster = m_caster->ToUnit())
 unitCaster->RemoveChannelObject(targetInfo.TargetGUID);
 continue;
 }
 }
 
 channelTargetEffectMask &= ~targetInfo.EffectMask; // remove from need alive mask effect that have alive target
 }
 }
 }
 
 // is all effects from m_needAliveTargetMask have alive targets
 return channelTargetEffectMask == 0;
}
 
SpellCastResult Spell::prepare(SpellCastTargets const& targets, AuraEffect const* triggeredByAura)
{
 if (m_CastItem)
 {
 m_castItemGUID = m_CastItem->GetGUID();
 m_castItemEntry = m_CastItem->GetEntry();
 
 if (Player* owner = m_CastItem->GetOwner())
 m_castItemLevel = int32(m_CastItem->GetItemLevel(owner));
 else if (m_CastItem->GetOwnerGUID() == m_caster->GetGUID())
 m_castItemLevel = int32(m_CastItem->GetItemLevel(m_caster->ToPlayer()));
 else
 {
 SendCastResult(SPELL_FAILED_EQUIPPED_ITEM);
 finish(SPELL_FAILED_EQUIPPED_ITEM);
 return SPELL_FAILED_EQUIPPED_ITEM;
 }
 }
 
 InitExplicitTargets(targets);
 
 m_spellState = SPELL_STATE_PREPARING;
 
 if (triggeredByAura)
 {
 m_triggeredByAuraSpell = triggeredByAura->GetSpellInfo();
 m_castItemLevel = triggeredByAura->GetBase()->GetCastItemLevel();
 }
 
 // create and add update event for this spell
 _spellEvent = new SpellEvent(this);
 m_caster->m_Events.AddEvent(_spellEvent, m_caster->m_Events.CalculateTime(1ms));
 
 // check disables
 if (DisableMgr::IsDisabledFor(DISABLE_TYPE_SPELL, m_spellInfo->Id, m_caster))
 {
 SendCastResult(SPELL_FAILED_SPELL_UNAVAILABLE);
 finish(SPELL_FAILED_SPELL_UNAVAILABLE);
 return SPELL_FAILED_SPELL_UNAVAILABLE;
 }
 
 // Prevent casting at cast another spell (ServerSide check)
 if (!(_triggeredCastFlags & TRIGGERED_IGNORE_CAST_IN_PROGRESS) && m_caster->ToUnit() && m_caster->ToUnit()->IsNonMeleeSpellCast(false, true, true, m_spellInfo->Id == 75) && !m_castId.IsEmpty())
 {
 SendCastResult(SPELL_FAILED_SPELL_IN_PROGRESS);
 finish(SPELL_FAILED_SPELL_IN_PROGRESS);
 return SPELL_FAILED_SPELL_IN_PROGRESS;
 }
 
 LoadScripts();
 
 // Fill cost data (do not use power for item casts)
 if (!m_CastItem)
 m_powerCost = m_spellInfo->CalcPowerCost(m_caster, m_spellSchoolMask, this);
 
 int32 param1 = 0, param2 = 0;
 SpellCastResult result = CheckCast(true, &param1, &param2);
 // target is checked in too many locations and with different results to handle each of them
 // handle just the general SPELL_FAILED_BAD_TARGETS result which is the default result for most DBC target checks
 if (_triggeredCastFlags & TRIGGERED_IGNORE_TARGET_CHECK && result == SPELL_FAILED_BAD_TARGETS)
 result = SPELL_CAST_OK;
 if (result != SPELL_CAST_OK)
 {
 // Periodic auras should be interrupted when aura triggers a spell which can't be cast
 // for example bladestorm aura should be removed on disarm as of patch 3.3.5
 // channeled periodic spells should be affected by this (arcane missiles, penance, etc)
 // a possible alternative sollution for those would be validating aura target on unit state change
 if (triggeredByAura && triggeredByAura->IsPeriodic() && !triggeredByAura->GetBase()->IsPassive())
 {
 SendChannelUpdate(0);
 triggeredByAura->GetBase()->SetDuration(0);
 }
 
 if (param1 || param2)
 SendCastResult(result, &param1, &param2);
 else
 SendCastResult(result);
 
 // queue autorepeat spells for future repeating
 if (GetCurrentContainer() == CURRENT_AUTOREPEAT_SPELL && m_caster->IsUnit())
 m_caster->ToUnit()->SetCurrentCastSpell(this);
 
 finish(result);
 return result;
 }
 
 // Prepare data for triggers
 prepareDataForTriggerSystem();
 
 m_casttime = CallScriptCalcCastTimeHandlers(m_spellInfo->CalcCastTime(this));
 
 if (m_caster->IsUnit() && m_caster->ToUnit()->isMoving())
 {
 result = CheckMovement();
 if (result != SPELL_CAST_OK)
 {
 SendCastResult(result);
 finish(result);
 return result;
 }
 }
 
 // Creatures focus their target when possible
 if (m_casttime && m_caster->IsCreature() && !m_spellInfo->IsNextMeleeSwingSpell() && !IsAutoRepeat() && !m_caster->ToUnit()->HasUnitFlag(UNIT_FLAG_POSSESSED))
 {
 // Channeled spells and some triggered spells do not focus a cast target. They face their target later on via channel object guid and via spell attribute or not at all
 bool const focusTarget = !m_spellInfo->IsChanneled() && !(_triggeredCastFlags & TRIGGERED_IGNORE_SET_FACING);
 if (focusTarget && m_targets.GetObjectTarget() && m_caster != m_targets.GetObjectTarget())
 m_caster->ToCreature()->SetSpellFocus(this, m_targets.GetObjectTarget());
 else
 m_caster->ToCreature()->SetSpellFocus(this, nullptr);
 }
 
 CallScriptOnPrecastHandler();
 
 // set timer base at cast time
 ReSetTimer();
 
 TC_LOG_DEBUG("spells", "Spell::prepare: spell id {} source {} caster {} customCastFlags {} mask {}", m_spellInfo->Id, m_caster->GetEntry(), m_originalCaster ? m_originalCaster->GetEntry() : -1, _triggeredCastFlags, m_targets.GetTargetMask());
 
 if (m_spellInfo->HasAttribute(SPELL_ATTR12_START_COOLDOWN_ON_CAST_START))
 SendSpellCooldown();
 
 if (m_spellInfo->HasAttribute(SPELL_ATTR7_RESET_SWING_TIMER_AT_SPELL_START) && IsAutoActionResetSpell())
 ResetCombatTimers();
 
 //Containers for channeled spells have to be set
 // Why check duration? 29350: channelled triggers channelled
 if ((_triggeredCastFlags & TRIGGERED_CAST_DIRECTLY) && (!m_spellInfo->IsChanneled() || !m_spellInfo->GetMaxDuration()))
 cast(true);
 else
 {
 // commented out !m_spellInfo->StartRecoveryTime, it forces instant spells with global cooldown to be processed in spell::update
 // as a result a spell that passed CheckCast and should be processed instantly may suffer from this delayed process
 // the easiest bug to observe is LoS check in AddUnitTarget, even if spell passed the CheckCast LoS check the situation can change in spell::update
 // because target could be relocated in the meantime, making the spell fly to the air (no targets can be registered, so no effects processed, nothing in combat log)
 bool willCastDirectly = !m_casttime && GetCurrentContainer() == CURRENT_GENERIC_SPELL;
 
 if (Unit* unitCaster = m_caster->ToUnit())
 {
 // stealth must be removed at cast starting (at show channel bar)
 // skip triggered spell (item equip spell casting and other not explicit character casts/item uses)
 if (!(_triggeredCastFlags & TRIGGERED_IGNORE_CAST_IN_PROGRESS) && !m_spellInfo->HasAttribute(SPELL_ATTR2_NOT_AN_ACTION))
 unitCaster->RemoveAurasWithInterruptFlags(SpellAuraInterruptFlags::Action, m_spellInfo);
 
 // Do not register as current spell when requested to ignore cast in progress
 // We don't want to interrupt that other spell with cast time
 if (!willCastDirectly || !(_triggeredCastFlags & TRIGGERED_IGNORE_CAST_IN_PROGRESS))
 unitCaster->SetCurrentCastSpell(this);
 }
 SendSpellStart();
 
 if (!(_triggeredCastFlags & TRIGGERED_IGNORE_GCD))
 TriggerGlobalCooldown();
 
 // Call CreatureAI hook OnSpellStart
 if (Creature* caster = m_caster->ToCreature())
 if (caster->IsAIEnabled())
 caster->AI()->OnSpellStart(GetSpellInfo());
 
 if (willCastDirectly)
 cast(true);
 }
 
 return SPELL_CAST_OK;
}
 
void Spell::cancel()
{
 if (m_spellState == SPELL_STATE_FINISHED)
 return;
 
 uint32 oldState = m_spellState;
 m_spellState = SPELL_STATE_FINISHED;
 
 m_autoRepeat = false;
 switch (oldState)
 {
 case SPELL_STATE_PREPARING:
 CancelGlobalCooldown();
 [[fallthrough]];
 case SPELL_STATE_DELAYED:
 SendInterrupted(0);
 SendCastResult(SPELL_FAILED_INTERRUPTED);
 break;
 
 case SPELL_STATE_CASTING:
 for (TargetInfo const& targetInfo : m_UniqueTargetInfo)
 if (targetInfo.MissCondition == SPELL_MISS_NONE)
 if (Unit* unit = m_caster->GetGUID() == targetInfo.TargetGUID ? m_caster->ToUnit() : ObjectAccessor::GetUnit(*m_caster, targetInfo.TargetGUID))
 unit->RemoveOwnedAura(m_spellInfo->Id, m_originalCasterGUID, 0, AURA_REMOVE_BY_CANCEL);
 
 SendChannelUpdate(0);
 SendInterrupted(0);
 SendCastResult(SPELL_FAILED_INTERRUPTED);
 
 m_appliedMods.clear();
 break;
 
 default:
 break;
 }
 
 SetReferencedFromCurrent(false);
 if (m_selfContainer && *m_selfContainer == this)
 *m_selfContainer = nullptr;
 
 // originalcaster handles gameobjects/dynobjects for gob caster
 if (m_originalCaster)
 {
 m_originalCaster->RemoveDynObject(m_spellInfo->Id);
 if (m_spellInfo->IsChanneled()) // if not channeled then the object for the current cast wasn't summoned yet
 m_originalCaster->RemoveGameObject(m_spellInfo->Id, true);
 }
 
 //set state back so finish will be processed
 m_spellState = oldState;
 
 finish(SPELL_FAILED_INTERRUPTED);
}
 
void Spell::cast(bool skipCheck)
{
 Player* modOwner = m_caster->GetSpellModOwner();
 Spell* lastSpellMod = nullptr;
 if (modOwner)
 {
 lastSpellMod = modOwner->m_spellModTakingSpell;
 if (lastSpellMod)
 modOwner->SetSpellModTakingSpell(lastSpellMod, false);
 }
 
 _cast(skipCheck);
 
 if (lastSpellMod)
 modOwner->SetSpellModTakingSpell(lastSpellMod, true);
}
 
void Spell::_cast(bool skipCheck)
{
 // update pointers base at GUIDs to prevent access to non-existed already object
 if (!UpdatePointers())
 {
 // cancel the spell if UpdatePointers() returned false, something wrong happened there
 cancel();
 return;
 }
 
 // cancel at lost explicit target during cast
 if (!m_targets.GetObjectTargetGUID().IsEmpty() && !m_targets.GetObjectTarget())
 {
 cancel();
 return;
 }
 
 if (Player* playerCaster = m_caster->ToPlayer())
 {
 // now that we've done the basic check, now run the scripts
 // should be done before the spell is actually executed
 sScriptMgr->OnPlayerSpellCast(playerCaster, this, skipCheck);
 
 // As of 3.0.2 pets begin attacking their owner's target immediately
 // Let any pets know we've attacked something. Check DmgClass for harmful spells only
 // This prevents spells such as Hunter's Mark from triggering pet attack
 if (GetSpellInfo()->DmgClass != SPELL_DAMAGE_CLASS_NONE)
 if (Unit* target = m_targets.GetUnitTarget())
 for (Unit* controlled : playerCaster->m_Controlled)
 if (Creature* cControlled = controlled->ToCreature())
 if (CreatureAI* controlledAI = cControlled->AI())
 controlledAI->OwnerAttacked(target);
 }
 
 SetExecutedCurrently(true);
 
 // Should this be done for original caster?
 Player* modOwner = m_caster->GetSpellModOwner();
 if (modOwner)
 {
 // Set spell which will drop charges for triggered cast spells
 // if not successfully cast, will be remove in finish(false)
 modOwner->SetSpellModTakingSpell(this, true);
 }
 
 CallScriptBeforeCastHandlers();
 
 // skip check if done already (for instant cast spells for example)
 if (!skipCheck)
 {
 auto cleanupSpell = [this, modOwner](SpellCastResult res, int32* p1 = nullptr, int32* p2 = nullptr)
 {
 SendCastResult(res, p1, p2);
 SendInterrupted(0);
 
 if (modOwner)
 modOwner->SetSpellModTakingSpell(this, false);
 
 finish(res);
 SetExecutedCurrently(false);
 };
 
 int32 param1 = 0, param2 = 0;
 SpellCastResult castResult = CheckCast(false, &param1, &param2);
 if (castResult != SPELL_CAST_OK)
 {
 cleanupSpell(castResult, &param1, &param2);
 return;
 }
 
 // additional check after cast bar completes (must not be in CheckCast)
 // if trade not complete then remember it in trade data
 if (m_targets.GetTargetMask() & TARGET_FLAG_TRADE_ITEM)
 {
 if (modOwner)
 {
 if (TradeData* my_trade = modOwner->GetTradeData())
 {
 if (!my_trade->IsInAcceptProcess())
 {
 // Spell will be cast after completing the trade. Silently ignore at this place
 my_trade->SetSpell(m_spellInfo->Id, m_CastItem);
 cleanupSpell(SPELL_FAILED_DONT_REPORT);
 return;
 }
 }
 }
 }
 
 // check diminishing returns (again, only after finish cast bar, tested on retail)
 if (Unit* target = m_targets.GetUnitTarget())
 {
 uint32 aura_effmask = 0;
 for (SpellEffectInfo const& spellEffectInfo : m_spellInfo->GetEffects())
 if (spellEffectInfo.IsUnitOwnedAuraEffect())
 aura_effmask |= 1 << spellEffectInfo.EffectIndex;
 
 if (aura_effmask)
 {
 if (m_spellInfo->GetDiminishingReturnsGroupForSpell())
 {
 DiminishingReturnsType type = m_spellInfo->GetDiminishingReturnsGroupType();
 if (type == DRTYPE_ALL || (type == DRTYPE_PLAYER && target->IsAffectedByDiminishingReturns()))
 {
 if (Unit* caster = m_originalCaster ? m_originalCaster : m_caster->ToUnit())
 {
 if (target->HasStrongerAuraWithDR(m_spellInfo, caster))
 {
 cleanupSpell(SPELL_FAILED_AURA_BOUNCED);
 return;
 }
 }
 }
 }
 }
 }
 }
 // The spell focusing is making sure that we have a valid cast target guid when we need it so only check for a guid value here.
 if (Creature* creatureCaster = m_caster->ToCreature())
 if (!creatureCaster->GetTarget().IsEmpty() && !creatureCaster->HasUnitFlag(UNIT_FLAG_POSSESSED))
 if (WorldObject const* target = ObjectAccessor::GetUnit(*creatureCaster, creatureCaster->GetTarget()))
 creatureCaster->SetInFront(target);
 
 SelectSpellTargets();
 
 // Spell may be finished after target map check
 if (m_spellState == SPELL_STATE_FINISHED)
 {
 SendInterrupted(0);
 
 // cleanup after mod system
 // triggered spell pointer can be not removed in some cases
 if (m_caster->GetTypeId() == TYPEID_PLAYER)
 m_caster->ToPlayer()->SetSpellModTakingSpell(this, false);
 
 finish(SPELL_FAILED_INTERRUPTED);
 SetExecutedCurrently(false);
 return;
 }
 
 if (Unit* unitCaster = m_caster->ToUnit())
 if (m_spellInfo->HasAttribute(SPELL_ATTR1_DISMISS_PET_FIRST))
 if (Creature* pet = ObjectAccessor::GetCreature(*m_caster, unitCaster->GetPetGUID()))
 pet->DespawnOrUnsummon();
 
 PrepareTriggersExecutedOnHit();
 
 CallScriptOnCastHandlers();
 
 // traded items have trade slot instead of guid in m_itemTargetGUID
 // set to real guid to be sent later to the client
 m_targets.UpdateTradeSlotItem();
 
 if (Player* player = m_caster->ToPlayer())
 {
 if (!(_triggeredCastFlags & TRIGGERED_IGNORE_CAST_ITEM) && m_CastItem)
 {
 player->StartCriteria(CriteriaStartEvent::UseItem, m_CastItem->GetEntry());
 player->UpdateCriteria(CriteriaType::UseItem, m_CastItem->GetEntry());
 }
 
 player->FailCriteria(CriteriaFailEvent::CastSpell, m_spellInfo->Id);
 player->StartCriteria(CriteriaStartEvent::CastSpell, m_spellInfo->Id);
 player->UpdateCriteria(CriteriaType::CastSpell, m_spellInfo->Id);
 }
 
 if (!(_triggeredCastFlags & TRIGGERED_IGNORE_POWER_AND_REAGENT_COST))
 {
 // Powers have to be taken before SendSpellGo
 TakePower();
 TakeReagents(); // we must remove reagents before HandleEffects to allow place crafted item in same slot
 }
 else if (Item* targetItem = m_targets.GetItemTarget())
 {
 if (targetItem->GetOwnerGUID() != m_caster->GetGUID())
 TakeReagents();
 }
 
 // CAST SPELL
 if (!m_spellInfo->HasAttribute(SPELL_ATTR12_START_COOLDOWN_ON_CAST_START))
 SendSpellCooldown();
 
 if (!m_spellInfo->LaunchDelay)
 {
 HandleLaunchPhase();
 m_launchHandled = true;
 }
 
 if (!m_spellInfo->HasAttribute(SPELL_ATTR7_RESET_SWING_TIMER_AT_SPELL_START) && IsAutoActionResetSpell())
 ResetCombatTimers();
 
 // we must send smsg_spell_go packet before m_castItem delete in TakeCastItem()...
 SendSpellGo();
 
 if (!m_spellInfo->IsChanneled())
 if (Creature* creatureCaster = m_caster->ToCreature())
 creatureCaster->ReleaseSpellFocus(this);
 
 // Okay, everything is prepared. Now we need to distinguish between immediate and evented delayed spells
 if (m_spellInfo->HasHitDelay() && !m_spellInfo->IsChanneled())
 {
 // Remove used for cast item if need (it can be already NULL after TakeReagents call
 // in case delayed spell remove item at cast delay start
 TakeCastItem();
 
 // Okay, maps created, now prepare flags
 m_immediateHandled = false;
 m_spellState = SPELL_STATE_DELAYED;
 SetDelayStart(0);
 
 if (Unit* unitCaster = m_caster->ToUnit())
 if (unitCaster->HasUnitState(UNIT_STATE_CASTING) && !unitCaster->IsNonMeleeSpellCast(false, false, true))
 unitCaster->ClearUnitState(UNIT_STATE_CASTING);
 }
 else
 {
 // Immediate spell, no big deal
 handle_immediate();
 }
 
 CallScriptAfterCastHandlers();
 
 if (std::vector<int32> const* spell_triggered = sSpellMgr->GetSpellLinked(SPELL_LINK_CAST, m_spellInfo->Id))
 {
 for (int32 id : *spell_triggered)
 {
 if (id < 0)
 {
 if (Unit* unitCaster = m_caster->ToUnit())
 unitCaster->RemoveAurasDueToSpell(-id);
 }
 else
 m_caster->CastSpell(m_targets.GetUnitTarget() ? m_targets.GetUnitTarget() : m_caster, id, CastSpellExtraArgs(TRIGGERED_FULL_MASK)
 .SetTriggeringSpell(this));
 }
 }
 
 if (modOwner)
 {
 modOwner->SetSpellModTakingSpell(this, false);
 
 //Clear spell cooldowns after every spell is cast if .cheat cooldown is enabled.
 if (m_originalCaster && modOwner->GetCommandStatus(CHEAT_COOLDOWN))
 {
 m_originalCaster->GetSpellHistory()->ResetCooldown(m_spellInfo->Id, true);
 m_originalCaster->GetSpellHistory()->RestoreCharge(m_spellInfo->ChargeCategoryId);
 }
 }
 
 SetExecutedCurrently(false);
 
 if (!m_originalCaster)
 return;
 
 // Handle procs on cast
 ProcFlagsInit procAttacker = m_procAttacker;
 if (!procAttacker)
 {
 if (m_spellInfo->HasAttribute(SPELL_ATTR3_TREAT_AS_PERIODIC))
 {
 if (IsPositive())
 procAttacker |= PROC_FLAG_DEAL_HELPFUL_PERIODIC;
 else
 procAttacker |= PROC_FLAG_DEAL_HARMFUL_PERIODIC;
 }
 else if (m_spellInfo->HasAttribute(SPELL_ATTR0_IS_ABILITY))
 {
 if (IsPositive())
 procAttacker |= PROC_FLAG_DEAL_HELPFUL_ABILITY;
 else
 procAttacker |= PROC_FLAG_DEAL_HARMFUL_ABILITY;
 }
 else
 {
 if (IsPositive())
 procAttacker |= PROC_FLAG_DEAL_HELPFUL_SPELL;
 else
 procAttacker |= PROC_FLAG_DEAL_HARMFUL_SPELL;
 }
 }
 
 procAttacker |= PROC_FLAG_2_CAST_SUCCESSFUL;
 
 ProcFlagsHit hitMask = m_hitMask;
 if (!(hitMask & PROC_HIT_CRITICAL))
 hitMask |= PROC_HIT_NORMAL;
 
 if (!(_triggeredCastFlags & TRIGGERED_IGNORE_CAST_IN_PROGRESS) && !m_spellInfo->HasAttribute(SPELL_ATTR2_NOT_AN_ACTION))
 m_originalCaster->RemoveAurasWithInterruptFlags(SpellAuraInterruptFlags::ActionDelayed, m_spellInfo);
 
 Unit::ProcSkillsAndAuras(m_originalCaster, nullptr, procAttacker, PROC_FLAG_NONE, PROC_SPELL_TYPE_MASK_ALL, PROC_SPELL_PHASE_CAST, hitMask, this, nullptr, nullptr);
 
 // Call CreatureAI hook OnSpellCast
 if (Creature* caster = m_originalCaster->ToCreature())
 if (caster->IsAIEnabled())
 caster->AI()->OnSpellCast(GetSpellInfo());
}
 
template <class Container>
void Spell::DoProcessTargetContainer(Container& targetContainer)
{
 for (TargetInfoBase& target : targetContainer)
 target.PreprocessTarget(this);
 
 for (SpellEffectInfo const& spellEffectInfo : m_spellInfo->GetEffects())
 for (TargetInfoBase& target : targetContainer)
 if (target.EffectMask & (1 << spellEffectInfo.EffectIndex))
 target.DoTargetSpellHit(this, spellEffectInfo);
 
 for (TargetInfoBase& target : targetContainer)
 target.DoDamageAndTriggers(this);
}
 
void Spell::handle_immediate()
{
 // start channeling if applicable
 if (m_spellInfo->IsChanneled())
 {
 int32 duration = m_spellInfo->GetDuration();
 if (duration > 0 || m_spellValue->Duration)
 {
 if (!m_spellValue->Duration)
 {
 // First mod_duration then haste - see Missile Barrage
 // Apply duration mod
 if (Player* modOwner = m_caster->GetSpellModOwner())
 modOwner->ApplySpellMod(m_spellInfo, SpellModOp::Duration, duration);
 
 duration *= m_spellValue->DurationMul;
 
 // Apply haste mods
 m_caster->ModSpellDurationTime(m_spellInfo, duration, this);
 }
 else
 duration = *m_spellValue->Duration;
 
 m_channeledDuration = duration;
 SendChannelStart(duration);
 }
 else if (duration == -1)
 SendChannelStart(duration);
 
 if (duration != 0)
 {
 m_spellState = SPELL_STATE_CASTING;
 // GameObjects shouldn't cast channeled spells
 ASSERT_NOTNULL(m_caster->ToUnit())->AddInterruptMask(m_spellInfo->ChannelInterruptFlags, m_spellInfo->ChannelInterruptFlags2);
 }
 }
 
 PrepareTargetProcessing();
 
 // process immediate effects (items, ground, etc.) also initialize some variables
 _handle_immediate_phase();
 
 // consider spell hit for some spells without target, so they may proc on finish phase correctly
 if (m_UniqueTargetInfo.empty())
 {
 m_hitMask = PROC_HIT_NORMAL;
 m_procSpellType = PROC_SPELL_TYPE_NO_DMG_HEAL;
 }
 else
 DoProcessTargetContainer(m_UniqueTargetInfo);
 
 DoProcessTargetContainer(m_UniqueGOTargetInfo);
 
 DoProcessTargetContainer(m_UniqueCorpseTargetInfo);
 
 FinishTargetProcessing();
 
 // spell is finished, perform some last features of the spell here
 _handle_finish_phase();
 
 // Remove used for cast item if need (it can be already NULL after TakeReagents call
 TakeCastItem();
 
 if (m_spellState != SPELL_STATE_CASTING)
 finish(); // successfully finish spell cast (not last in case autorepeat or channel spell)
}
 
uint64 Spell::handle_delayed(uint64 t_offset)
{
 if (!UpdatePointers())
 {
 // finish the spell if UpdatePointers() returned false, something wrong happened there
 finish(SPELL_FAILED_NO_VALID_TARGETS);
 return 0;
 }
 
 // when spell has a single missile we hit all targets (except caster) at the same time
 bool single_missile = m_targets.HasDst();
 bool ignoreTargetInfoTimeDelay = single_missile;
 uint64 next_time = 0;
 
 if (!m_launchHandled)
 {
 uint64 launchMoment = uint64(std::floor(m_spellInfo->LaunchDelay * 1000.0f));
 if (launchMoment > t_offset)
 return launchMoment;
 
 HandleLaunchPhase();
 m_launchHandled = true;
 }
 
 if (m_delayMoment > t_offset)
 {
 ignoreTargetInfoTimeDelay = false;
 next_time = m_delayMoment;
 }
 
 Player* modOwner = m_caster->GetSpellModOwner();
 if (modOwner)
 modOwner->SetSpellModTakingSpell(this, true);
 
 PrepareTargetProcessing();
 
 if (!m_immediateHandled && m_delayMoment <= t_offset)
 {
 _handle_immediate_phase();
 m_immediateHandled = true;
 }
 
 // now recheck units targeting correctness (need before any effects apply to prevent adding immunity at first effect not allow apply second spell effect and similar cases)
 {
 std::vector<TargetInfo> delayedTargets;
 m_UniqueTargetInfo.erase(std::remove_if(m_UniqueTargetInfo.begin(), m_UniqueTargetInfo.end(), [&](TargetInfo& target) -> bool
 {
 if (ignoreTargetInfoTimeDelay || target.TimeDelay <= t_offset)
 {
 target.TimeDelay = t_offset;
 delayedTargets.emplace_back(std::move(target));
 return true;
 }
 else if (!single_missile && (next_time == 0 || target.TimeDelay < next_time))
 next_time = target.TimeDelay;
 
 return false;
 }), m_UniqueTargetInfo.end());
 
 DoProcessTargetContainer(delayedTargets);
 }
 
 // now recheck gameobject targeting correctness
 {
 std::vector<GOTargetInfo> delayedGOTargets;
 m_UniqueGOTargetInfo.erase(std::remove_if(m_UniqueGOTargetInfo.begin(), m_UniqueGOTargetInfo.end(), [&](GOTargetInfo& goTarget) -> bool
 {
 if (ignoreTargetInfoTimeDelay || goTarget.TimeDelay <= t_offset)
 {
 goTarget.TimeDelay = t_offset;
 delayedGOTargets.emplace_back(std::move(goTarget));
 return true;
 }
 else if (!single_missile && (next_time == 0 || goTarget.TimeDelay < next_time))
 next_time = goTarget.TimeDelay;
 
 return false;
 }), m_UniqueGOTargetInfo.end());
 
 DoProcessTargetContainer(delayedGOTargets);
 }
 
 FinishTargetProcessing();
 
 if (modOwner)
 modOwner->SetSpellModTakingSpell(this, false);
 
 // All targets passed - need finish phase
 if (next_time == 0)
 {
 // spell is finished, perform some last features of the spell here
 _handle_finish_phase();
 
 finish(); // successfully finish spell cast
 
 // return zero, spell is finished now
 return 0;
 }
 else
 {
 // spell is unfinished, return next execution time
 return next_time;
 }
}
 
void Spell::_handle_immediate_phase()
{
 // handle some immediate features of the spell here
 HandleThreatSpells();
 
 // handle effects with SPELL_EFFECT_HANDLE_HIT mode
 for (SpellEffectInfo const& spellEffectInfo : m_spellInfo->GetEffects())
 {
 // don't do anything for empty effect
 if (!spellEffectInfo.IsEffect())
 continue;
 
 // call effect handlers to handle destination hit
 HandleEffects(nullptr, nullptr, nullptr, nullptr, spellEffectInfo, SPELL_EFFECT_HANDLE_HIT);
 }
 
 // process items
 DoProcessTargetContainer(m_UniqueItemInfo);
}
 
void Spell::_handle_finish_phase()
{
 if (Unit* unitCaster = m_caster->ToUnit())
 if (m_spellInfo->HasEffect(SPELL_EFFECT_ADD_EXTRA_ATTACKS))
 unitCaster->SetLastExtraAttackSpell(m_spellInfo->Id);
 
 // Handle procs on finish
 if (!m_originalCaster)
 return;
 
 ProcFlagsInit procAttacker = m_procAttacker;
 if (!procAttacker)
 {
 if (m_spellInfo->HasAttribute(SPELL_ATTR3_TREAT_AS_PERIODIC))
 {
 if (IsPositive())
 procAttacker |= PROC_FLAG_DEAL_HELPFUL_PERIODIC;
 else
 procAttacker |= PROC_FLAG_DEAL_HARMFUL_PERIODIC;
 }
 else if (m_spellInfo->HasAttribute(SPELL_ATTR0_IS_ABILITY))
 {
 if (IsPositive())
 procAttacker |= PROC_FLAG_DEAL_HELPFUL_ABILITY;
 else
 procAttacker |= PROC_FLAG_DEAL_HARMFUL_ABILITY;
 }
 else
 {
 if (IsPositive())
 procAttacker |= PROC_FLAG_DEAL_HELPFUL_SPELL;
 else
 procAttacker |= PROC_FLAG_DEAL_HARMFUL_SPELL;
 }
 }
 
 Unit::ProcSkillsAndAuras(m_originalCaster, nullptr, procAttacker, PROC_FLAG_NONE, m_procSpellType, PROC_SPELL_PHASE_FINISH, m_hitMask, this, nullptr, nullptr);
}
 
void Spell::SendSpellCooldown()
{
 if (!m_caster->IsUnit())
 return;
 
 if (m_CastItem)
 m_caster->ToUnit()->GetSpellHistory()->HandleCooldowns(m_spellInfo, m_CastItem, this);
 else
 m_caster->ToUnit()->GetSpellHistory()->HandleCooldowns(m_spellInfo, m_castItemEntry, this);
 
 if (IsAutoRepeat())
 m_caster->ToUnit()->resetAttackTimer(RANGED_ATTACK);
}
 
void Spell::update(uint32 difftime)
{
 // update pointers based at it's GUIDs
 if (!UpdatePointers())
 {
 // cancel the spell if UpdatePointers() returned false, something wrong happened there
 cancel();
 return;
 }
 
 if (!m_targets.GetUnitTargetGUID().IsEmpty() && !m_targets.GetUnitTarget())
 {
 TC_LOG_DEBUG("spells", "Spell {} is cancelled due to removal of target.", m_spellInfo->Id);
 cancel();
 return;
 }
 
 // check if the player caster has moved before the spell finished
 // with the exception of spells affected with SPELL_AURA_CAST_WHILE_WALKING effect
 if (m_timer != 0 && m_caster->IsUnit() && m_caster->ToUnit()->isMoving() && CheckMovement() != SPELL_CAST_OK)
 {
 // if charmed by creature, trust the AI not to cheat and allow the cast to proceed
 // @todo this is a hack, "creature" movesplines don't differentiate turning/moving right now
 // however, checking what type of movement the spline is for every single spline would be really expensive
 if (!m_caster->ToUnit()->GetCharmerGUID().IsCreature())
 cancel();
 }
 
 switch (m_spellState)
 {
 case SPELL_STATE_PREPARING:
 {
 if (m_timer > 0)
 {
 if (difftime >= (uint32)m_timer)
 m_timer = 0;
 else
 m_timer -= difftime;
 }
 
 if (m_timer == 0 && !m_spellInfo->IsNextMeleeSwingSpell())
 // don't CheckCast for instant spells - done in spell::prepare, skip duplicate checks, needed for range checks for example
 cast(!m_casttime);
 break;
 }
 case SPELL_STATE_CASTING:
 {
 if (m_timer)
 {
 // check if there are alive targets left
 if (!UpdateChanneledTargetList())
 {
 TC_LOG_DEBUG("spells", "Channeled spell {} is removed due to lack of targets", m_spellInfo->Id);
 m_timer = 0;
 
 // Also remove applied auras
 for (TargetInfo const& target : m_UniqueTargetInfo)
 if (Unit* unit = m_caster->GetGUID() == target.TargetGUID ? m_caster->ToUnit() : ObjectAccessor::GetUnit(*m_caster, target.TargetGUID))
 unit->RemoveOwnedAura(m_spellInfo->Id, m_originalCasterGUID, 0, AURA_REMOVE_BY_CANCEL);
 }
 
 if (m_timer > 0)
 {
 if (difftime >= (uint32)m_timer)
 m_timer = 0;
 else
 m_timer -= difftime;
 }
 }
 
 if (m_timer == 0)
 {
 SendChannelUpdate(0);
 finish();
 
 // We call the hook here instead of in Spell::finish because we only want to call it for completed channeling. Everything else is handled by interrupts
 if (Creature* creatureCaster = m_caster->ToCreature())
 if (creatureCaster->IsAIEnabled())
 creatureCaster->AI()->OnChannelFinished(m_spellInfo);
 }
 break;
 }
 default:
 break;
 }
}
 
void Spell::finish(SpellCastResult result)
{
 if (m_spellState == SPELL_STATE_FINISHED)
 return;
 m_spellState = SPELL_STATE_FINISHED;
 
 if (!m_caster)
 return;
 
 Unit* unitCaster = m_caster->ToUnit();
 if (!unitCaster)
 return;
 
 // successful cast of the initial autorepeat spell is moved to idle state so that it is not deleted as long as autorepeat is active
 if (IsAutoRepeat() && unitCaster->GetCurrentSpell(CURRENT_AUTOREPEAT_SPELL) == this)
 m_spellState = SPELL_STATE_IDLE;
 
 if (m_spellInfo->IsChanneled())
 unitCaster->UpdateInterruptMask();
 
 if (unitCaster->HasUnitState(UNIT_STATE_CASTING) && !unitCaster->IsNonMeleeSpellCast(false, false, true))
 unitCaster->ClearUnitState(UNIT_STATE_CASTING);
 
 // Unsummon summon as possessed creatures on spell cancel
 if (m_spellInfo->IsChanneled() && unitCaster->GetTypeId() == TYPEID_PLAYER)
 {
 if (Unit* charm = unitCaster->GetCharmed())
 if (charm->GetTypeId() == TYPEID_UNIT
 && charm->ToCreature()->HasUnitTypeMask(UNIT_MASK_PUPPET)
 && charm->m_unitData->CreatedBySpell == int32(m_spellInfo->Id))
 ((Puppet*)charm)->UnSummon();
 }
 
 if (Creature* creatureCaster = unitCaster->ToCreature())
 creatureCaster->ReleaseSpellFocus(this);
 
 Unit::ProcSkillsAndAuras(unitCaster, nullptr, PROC_FLAG_CAST_ENDED, PROC_FLAG_NONE, PROC_SPELL_TYPE_MASK_ALL, PROC_SPELL_PHASE_NONE, PROC_HIT_NONE, this, nullptr, nullptr);
 
 if (result != SPELL_CAST_OK)
 {
 // on failure (or manual cancel) send TraitConfigCommitFailed to revert talent UI saved config selection
 if (m_caster->IsPlayer() && m_spellInfo->HasEffect(SPELL_EFFECT_CHANGE_ACTIVE_COMBAT_TRAIT_CONFIG))
 if (WorldPackets::Traits::TraitConfig const* traitConfig = std::any_cast<WorldPackets::Traits::TraitConfig>(&m_customArg))
 m_caster->ToPlayer()->SendDirectMessage(WorldPackets::Traits::TraitConfigCommitFailed(traitConfig->ID).Write());
 
 return;
 }
 
 if (unitCaster->GetTypeId() == TYPEID_UNIT && unitCaster->IsSummon())
 {
 // Unsummon statue
 uint32 spell = unitCaster->m_unitData->CreatedBySpell;
 SpellInfo const* spellInfo = sSpellMgr->GetSpellInfo(spell, GetCastDifficulty());
 if (spellInfo && spellInfo->IconFileDataId == 134230)
 {
 TC_LOG_DEBUG("spells", "Statue {} is unsummoned in spell {} finish", unitCaster->GetGUID().ToString(), m_spellInfo->Id);
 // Avoid infinite loops with setDeathState(JUST_DIED) being called over and over
 // It might make sense to do this check in Unit::setDeathState() and all overloaded functions
 if (unitCaster->getDeathState() != JUST_DIED)
 unitCaster->setDeathState(JUST_DIED);
 return;
 }
 }
 
 // potions disabled by client, send event "not in combat" if need
 if (unitCaster->GetTypeId() == TYPEID_PLAYER)
 {
 if (!m_triggeredByAuraSpell)
 unitCaster->ToPlayer()->UpdatePotionCooldown(this);
 }
 
 // Stop Attack for some spells
 if (m_spellInfo->HasAttribute(SPELL_ATTR0_CANCELS_AUTO_ATTACK_COMBAT))
 unitCaster->AttackStop();
}
 
template<class T>
inline void FillSpellCastFailedArgs(T& packet, ObjectGuid castId, SpellInfo const* spellInfo, SpellCastResult result, SpellCustomErrors customError, int32* param1 /*= nullptr*/, int32* param2 /*= nullptr*/, Player* caster)
{
 packet.CastID = castId;
 packet.SpellID = spellInfo->Id;
 packet.Reason = result;
 
 switch (result)
 {
 case SPELL_FAILED_NOT_READY:
 if (param1)
 packet.FailedArg1 = *param1;
 else
 packet.FailedArg1 = 0; // unknown (value 1 update cooldowns on client flag)
 break;
 case SPELL_FAILED_REQUIRES_SPELL_FOCUS:
 if (param1)
 packet.FailedArg1 = *param1;
 else
 packet.FailedArg1 = spellInfo->RequiresSpellFocus; // SpellFocusObject.dbc id
 break;
 case SPELL_FAILED_REQUIRES_AREA: // AreaTable.dbc id
 if (param1)
 packet.FailedArg1 = *param1;
 else
 {
 // hardcode areas limitation case
 switch (spellInfo->Id)
 {
 case 41617: // Cenarion Mana Salve
 case 41619: // Cenarion Healing Salve
 packet.FailedArg1 = 3905;
 break;
 case 41618: // Bottled Nethergon Energy
 case 41620: // Bottled Nethergon Vapor
 packet.FailedArg1 = 3842;
 break;
 case 45373: // Bloodberry Elixir
 packet.FailedArg1 = 4075;
 break;
 default: // default case (don't must be)
 packet.FailedArg1 = 0;
 break;
 }
 }
 break;
 case SPELL_FAILED_TOTEMS:
 if (param1)
 {
 packet.FailedArg1 = *param1;
 if (param2)
 packet.FailedArg2 = *param2;
 }
 else
 {
 if (spellInfo->Totem[0])
 packet.FailedArg1 = spellInfo->Totem[0];
 if (spellInfo->Totem[1])
 packet.FailedArg2 = spellInfo->Totem[1];
 }
 break;
 case SPELL_FAILED_TOTEM_CATEGORY:
 if (param1)
 {
 packet.FailedArg1 = *param1;
 if (param2)
 packet.FailedArg2 = *param2;
 }
 else
 {
 if (spellInfo->TotemCategory[0])
 packet.FailedArg1 = spellInfo->TotemCategory[0];
 if (spellInfo->TotemCategory[1])
 packet.FailedArg2 = spellInfo->TotemCategory[1];
 }
 break;
 case SPELL_FAILED_EQUIPPED_ITEM_CLASS:
 case SPELL_FAILED_EQUIPPED_ITEM_CLASS_MAINHAND:
 case SPELL_FAILED_EQUIPPED_ITEM_CLASS_OFFHAND:
 if (param1 && param2)
 {
 packet.FailedArg1 = *param1;
 packet.FailedArg2 = *param2;
 }
 else
 {
 packet.FailedArg1 = spellInfo->EquippedItemClass;
 packet.FailedArg2 = spellInfo->EquippedItemSubClassMask;
 }
 break;
 case SPELL_FAILED_TOO_MANY_OF_ITEM:
 {
 if (param1)
 packet.FailedArg1 = *param1;
 else
 {
 uint32 item = 0;
 for (SpellEffectInfo const& spellEffectInfo : spellInfo->GetEffects())
 {
 if (uint32 itemType = spellEffectInfo.ItemType)
 {
 item = itemType;
 break;
 }
 }
 
 ItemTemplate const* proto = sObjectMgr->GetItemTemplate(item);
 if (proto && proto->GetItemLimitCategory())
 packet.FailedArg1 = proto->GetItemLimitCategory();
 }
 break;
 }
 case SPELL_FAILED_PREVENTED_BY_MECHANIC:
 if (param1)
 packet.FailedArg1 = *param1;
 else
 packet.FailedArg1 = spellInfo->GetAllEffectsMechanicMask(); // SpellMechanic.dbc id
 break;
 case SPELL_FAILED_NEED_EXOTIC_AMMO:
 if (param1)
 packet.FailedArg1 = *param1;
 else
 packet.FailedArg1 = spellInfo->EquippedItemSubClassMask; // seems correct...
 break;
 case SPELL_FAILED_NEED_MORE_ITEMS:
 if (param1 && param2)
 {
 packet.FailedArg1 = *param1;
 packet.FailedArg2 = *param2;
 }
 else
 {
 packet.FailedArg1 = 0; // Item id
 packet.FailedArg2 = 0; // Item count?
 }
 break;
 case SPELL_FAILED_MIN_SKILL:
 if (param1 && param2)
 {
 packet.FailedArg1 = *param1;
 packet.FailedArg2 = *param2;
 }
 else
 {
 packet.FailedArg1 = 0; // SkillLine.dbc id
 packet.FailedArg2 = 0; // required skill value
 }
 break;
 case SPELL_FAILED_FISHING_TOO_LOW:
 if (param1)
 packet.FailedArg1 = *param1;
 else
 packet.FailedArg1 = 0; // required fishing skill
 break;
 case SPELL_FAILED_CUSTOM_ERROR:
 packet.FailedArg1 = customError;
 break;
 case SPELL_FAILED_SILENCED:
 if (param1)
 packet.FailedArg1 = *param1;
 else
 packet.FailedArg1 = 0; // Unknown
 break;
 case SPELL_FAILED_REAGENTS:
 {
 if (param1)
 packet.FailedArg1 = *param1;
 else
 {
 for (uint32 i = 0; i < MAX_SPELL_REAGENTS; i++)
 {
 if (spellInfo->Reagent[i] <= 0)
 continue;
 
 uint32 itemid = spellInfo->Reagent[i];
 uint32 itemcount = spellInfo->ReagentCount[i];
 
 if (caster && !caster->HasItemCount(itemid, itemcount))
 {
 packet.FailedArg1 = itemid; // first missing item
 break;
 }
 }
 }
 
 if (param2)
 packet.FailedArg2 = *param2;
 else if (!param1)
 {
 for (SpellReagentsCurrencyEntry const* reagentsCurrency : spellInfo->ReagentsCurrency)
 {
 if (caster && !caster->HasCurrency(reagentsCurrency->CurrencyTypesID, reagentsCurrency->CurrencyCount))
 {
 packet.FailedArg1 = -1;
 packet.FailedArg2 = reagentsCurrency->CurrencyTypesID;
 break;
 }
 }
 }
 
 break;
 }
 case SPELL_FAILED_CANT_UNTALENT:
 {
 ASSERT(param1);
 packet.FailedArg1 = *param1;
 break;
 }
 // TODO: SPELL_FAILED_NOT_STANDING
 default:
 break;
 }
}
 
void Spell::SendCastResult(SpellCastResult result, int32* param1 /*= nullptr*/, int32* param2 /*= nullptr*/) const
{
 if (result == SPELL_CAST_OK)
 return;
 
 Player const* receiver = m_caster->ToPlayer();
 if (m_spellInfo->HasAttribute(SPELL_ATTR7_REPORT_SPELL_FAILURE_TO_UNIT_TARGET))
 if (Player const* target = Object::ToPlayer(m_targets.GetUnitTarget()))
 receiver = target;
 
 if (!receiver)
 return;
 
 if (receiver->IsLoading()) // don't send cast results at loading time
 return;
 
 if (_triggeredCastFlags & TRIGGERED_DONT_REPORT_CAST_ERROR)
 result = SPELL_FAILED_DONT_REPORT;
 
 WorldPackets::Spells::CastFailed castFailed;
 castFailed.Visual = m_SpellVisual;
 FillSpellCastFailedArgs(castFailed, m_castId, m_spellInfo, result, m_customError, param1, param2, m_caster->ToPlayer());
 receiver->SendDirectMessage(castFailed.Write());
}
 
void Spell::SendPetCastResult(SpellCastResult result, int32* param1 /*= nullptr*/, int32* param2 /*= nullptr*/) const
{
 if (result == SPELL_CAST_OK)
 return;
 
 Unit* owner = m_caster->GetCharmerOrOwner();
 if (!owner || owner->GetTypeId() != TYPEID_PLAYER)
 return;
 
 if (_triggeredCastFlags & TRIGGERED_DONT_REPORT_CAST_ERROR)
 result = SPELL_FAILED_DONT_REPORT;
 
 WorldPackets::Spells::PetCastFailed petCastFailed;
 FillSpellCastFailedArgs(petCastFailed, m_castId, m_spellInfo, result, SPELL_CUSTOM_ERROR_NONE, param1, param2, owner->ToPlayer());
 owner->ToPlayer()->SendDirectMessage(petCastFailed.Write());
}
 
void Spell::SendCastResult(Player* caster, SpellInfo const* spellInfo, SpellCastVisual spellVisual, ObjectGuid cast_count, SpellCastResult result, SpellCustomErrors customError /*= SPELL_CUSTOM_ERROR_NONE*/, int32* param1 /*= nullptr*/, int32* param2 /*= nullptr*/)
{
 if (result == SPELL_CAST_OK)
 return;
 
 WorldPackets::Spells::CastFailed packet;
 packet.Visual = spellVisual;
 FillSpellCastFailedArgs(packet, cast_count, spellInfo, result, customError, param1, param2, caster);
 caster->SendDirectMessage(packet.Write());
}
 
void Spell::SendMountResult(MountResult result)
{
 if (result == MountResult::Ok)
 return;
 
 if (!m_caster->IsPlayer())
 return;
 
 Player* caster = m_caster->ToPlayer();
 if (caster->IsLoading()) // don't send mount results at loading time
 return;
 
 WorldPackets::Spells::MountResult packet;
 packet.Result = AsUnderlyingType(result);
 caster->SendDirectMessage(packet.Write());
}
 
void Spell::SendSpellStart()
{
 if (!IsNeedSendToClient())
 return;
 
 TC_LOG_DEBUG("spells", "Sending SMSG_SPELL_START id={}", m_spellInfo->Id);
 
 uint32 castFlags = CAST_FLAG_HAS_TRAJECTORY;
 uint32 schoolImmunityMask = 0;
 uint32 mechanicImmunityMask = 0;
 if (Unit* unitCaster = m_caster->ToUnit())
 {
 schoolImmunityMask = m_timer!= 0 ? unitCaster->GetSchoolImmunityMask() : 0;
 mechanicImmunityMask = m_timer != 0 ? m_spellInfo->GetMechanicImmunityMask(unitCaster) : 0;
 }
 
 if (schoolImmunityMask || mechanicImmunityMask)
 castFlags |= CAST_FLAG_IMMUNITY;
 
 if (((IsTriggered() && !m_spellInfo->IsAutoRepeatRangedSpell()) || m_triggeredByAuraSpell) && !m_fromClient)
 castFlags |= CAST_FLAG_PENDING;
 
 if (m_spellInfo->HasAttribute(SPELL_ATTR0_USES_RANGED_SLOT) || m_spellInfo->HasAttribute(SPELL_ATTR10_USES_RANGED_SLOT_COSMETIC_ONLY) || m_spellInfo->HasAttribute(SPELL_ATTR0_CU_NEEDS_AMMO_DATA))
 castFlags |= CAST_FLAG_PROJECTILE;
 
 if ((m_caster->GetTypeId() == TYPEID_PLAYER ||
 (m_caster->GetTypeId() == TYPEID_UNIT && m_caster->ToCreature()->IsPet()))
 && std::find_if(m_powerCost.begin(), m_powerCost.end(), [](SpellPowerCost const& cost) { return cost.Power != POWER_HEALTH; }) != m_powerCost.end())
 castFlags |= CAST_FLAG_POWER_LEFT_SELF;
 
 if (HasPowerTypeCost(POWER_RUNES))
 castFlags |= CAST_FLAG_NO_GCD; // not needed, but Blizzard sends it
 
 if (m_spellInfo->HasAttribute(SPELL_ATTR8_HEAL_PREDICTION) && m_casttime && m_caster->IsUnit())
 castFlags |= CAST_FLAG_HEAL_PREDICTION;
 
 WorldPackets::Spells::SpellStart packet;
 WorldPackets::Spells::SpellCastData& castData = packet.Cast;
 
 if (m_CastItem)
 castData.CasterGUID = m_CastItem->GetGUID();
 else
 castData.CasterGUID = m_caster->GetGUID();
 
 castData.CasterUnit = m_caster->GetGUID();
 castData.CastID = m_castId;
 castData.OriginalCastID = m_originalCastId;
 castData.SpellID = m_spellInfo->Id;
 castData.Visual = m_SpellVisual;
 castData.CastFlags = castFlags;
 castData.CastFlagsEx = m_castFlagsEx;
 castData.CastTime = m_casttime;
 
 m_targets.Write(castData.Target);
 
 if (castFlags & CAST_FLAG_POWER_LEFT_SELF)
 {
 for (SpellPowerCost const& cost : m_powerCost)
 {
 WorldPackets::Spells::SpellPowerData powerData;
 powerData.Type = cost.Power;
 powerData.Cost = ASSERT_NOTNULL(m_caster->ToUnit())->GetPower(cost.Power);
 castData.RemainingPower.push_back(powerData);
 }
 }
 
 if (castFlags & CAST_FLAG_RUNE_LIST) // rune cooldowns list
 {
 castData.RemainingRunes.emplace();
 
 //TODO: There is a crash caused by a spell with CAST_FLAG_RUNE_LIST casted by a creature
 //The creature is the mover of a player, so HandleCastSpellOpcode uses it as the caster
 if (Player* player = m_caster->ToPlayer())
 {
 castData.RemainingRunes->Start = m_runesState; // runes state before
 castData.RemainingRunes->Count = player->GetRunesState(); // runes state after
 for (uint8 i = 0; i < player->GetMaxPower(POWER_RUNES); ++i)
 {
 // float casts ensure the division is performed on floats as we need float result
 float baseCd = float(player->GetRuneBaseCooldown());
 castData.RemainingRunes->Cooldowns.push_back((baseCd - float(player->GetRuneCooldown(i))) / baseCd * 255); // rune cooldown passed
 }
 }
 else
 {
 castData.RemainingRunes->Start = 0;
 castData.RemainingRunes->Count = 0;
 for (uint8 i = 0; i < player->GetMaxPower(POWER_RUNES); ++i)
 castData.RemainingRunes->Cooldowns.push_back(0);
 }
 }
 
 if (castFlags & CAST_FLAG_PROJECTILE)
 castData.AmmoDisplayID = GetSpellCastDataAmmo();
 
 if (castFlags & CAST_FLAG_IMMUNITY)
 {
 castData.Immunities.School = schoolImmunityMask;
 castData.Immunities.Value = mechanicImmunityMask;
 }
 
 if (castFlags & CAST_FLAG_HEAL_PREDICTION)
 UpdateSpellHealPrediction(castData.Predict, false);
 
 m_caster->SendMessageToSet(packet.Write(), true);
}
 
void Spell::SendSpellGo()
{
 // not send invisible spell casting
 if (!IsNeedSendToClient())
 return;
 
 TC_LOG_DEBUG("spells", "Sending SMSG_SPELL_GO id={}", m_spellInfo->Id);
 
 uint32 castFlags = CAST_FLAG_UNKNOWN_9;
 
 // triggered spells with spell visual != 0
 if (((IsTriggered() && !m_spellInfo->IsAutoRepeatRangedSpell()) || m_triggeredByAuraSpell) && !m_fromClient)
 castFlags |= CAST_FLAG_PENDING;
 
 if (m_spellInfo->HasAttribute(SPELL_ATTR0_USES_RANGED_SLOT) || m_spellInfo->HasAttribute(SPELL_ATTR10_USES_RANGED_SLOT_COSMETIC_ONLY) || m_spellInfo->HasAttribute(SPELL_ATTR0_CU_NEEDS_AMMO_DATA))
 castFlags |= CAST_FLAG_PROJECTILE; // arrows/bullets visual
 
 if ((m_caster->GetTypeId() == TYPEID_PLAYER ||
 (m_caster->GetTypeId() == TYPEID_UNIT && m_caster->ToCreature()->IsPet()))
 && std::find_if(m_powerCost.begin(), m_powerCost.end(), [](SpellPowerCost const& cost) { return cost.Power != POWER_HEALTH; }) != m_powerCost.end())
 castFlags |= CAST_FLAG_POWER_LEFT_SELF;
 
 if ((m_caster->GetTypeId() == TYPEID_PLAYER)
 && (m_caster->ToPlayer()->GetClass() == CLASS_DEATH_KNIGHT)
 && HasPowerTypeCost(POWER_RUNES)
 && !(_triggeredCastFlags & TRIGGERED_IGNORE_POWER_AND_REAGENT_COST))
 {
 castFlags |= CAST_FLAG_NO_GCD; // not needed, but Blizzard sends it
 castFlags |= CAST_FLAG_RUNE_LIST; // rune cooldowns list
 }
 
 if (m_targets.HasTraj())
 castFlags |= CAST_FLAG_ADJUST_MISSILE;
 
 if (!m_spellInfo->StartRecoveryTime)
 castFlags |= CAST_FLAG_NO_GCD;
 
 WorldPackets::Spells::SpellGo packet;
 WorldPackets::Spells::SpellCastData& castData = packet.Cast;
 if (m_CastItem)
 castData.CasterGUID = m_CastItem->GetGUID();
 else
 castData.CasterGUID = m_caster->GetGUID();
 
 castData.CasterUnit = m_caster->GetGUID();
 castData.CastID = m_castId;
 castData.OriginalCastID = m_originalCastId;
 castData.SpellID = m_spellInfo->Id;
 castData.Visual = m_SpellVisual;
 castData.CastFlags = castFlags;
 castData.CastFlagsEx = m_castFlagsEx;
 castData.CastTime = getMSTime();
 
 UpdateSpellCastDataTargets(castData);
 
 m_targets.Write(castData.Target);
 
 if (castFlags & CAST_FLAG_POWER_LEFT_SELF)
 {
 for (SpellPowerCost const& cost : m_powerCost)
 {
 WorldPackets::Spells::SpellPowerData powerData;
 powerData.Type = cost.Power;
 powerData.Cost = ASSERT_NOTNULL(m_caster->ToUnit())->GetPower(cost.Power);
 castData.RemainingPower.push_back(powerData);
 }
 }
 
 if (castFlags & CAST_FLAG_RUNE_LIST) // rune cooldowns list
 {
 castData.RemainingRunes.emplace();
 
 Player* player = ASSERT_NOTNULL(m_caster->ToPlayer());
 castData.RemainingRunes->Start = m_runesState; // runes state before
 castData.RemainingRunes->Count = player->GetRunesState(); // runes state after
 for (uint8 i = 0; i < player->GetMaxPower(POWER_RUNES); ++i)
 {
 // float casts ensure the division is performed on floats as we need float result
 float baseCd = float(player->GetRuneBaseCooldown());
 castData.RemainingRunes->Cooldowns.push_back((baseCd - float(player->GetRuneCooldown(i))) / baseCd * 255); // rune cooldown passed
 }
 }
 
 if (castFlags & CAST_FLAG_ADJUST_MISSILE)
 {
 castData.MissileTrajectory.TravelTime = m_delayMoment;
 castData.MissileTrajectory.Pitch = m_targets.GetPitch();
 }
 
 packet.LogData.Initialize(this);
 
 m_caster->SendCombatLogMessage(&packet);
}
 
void Spell::UpdateSpellCastDataTargets(WorldPackets::Spells::SpellCastData& data)
{
 // This function also fill data for channeled spells:
 // m_needAliveTargetMask req for stop channeling if one target die
 for (TargetInfo& targetInfo : m_UniqueTargetInfo)
 {
 if (targetInfo.EffectMask == 0) // No effect apply - all immune add state
 // possibly SPELL_MISS_IMMUNE2 for this??
 targetInfo.MissCondition = SPELL_MISS_IMMUNE2;
 
 if (targetInfo.MissCondition == SPELL_MISS_NONE || (targetInfo.MissCondition == SPELL_MISS_BLOCK && !m_spellInfo->HasAttribute(SPELL_ATTR3_COMPLETELY_BLOCKED))) // Add only hits and partial blocked
 {
 data.HitTargets.push_back(targetInfo.TargetGUID);
 data.HitStatus.emplace_back(SPELL_MISS_NONE);
 
 m_channelTargetEffectMask |= targetInfo.EffectMask;
 }
 else // misses
 {
 data.MissTargets.push_back(targetInfo.TargetGUID);
 data.MissStatus.emplace_back(targetInfo.MissCondition, targetInfo.ReflectResult);
 }
 }
 
 for (GOTargetInfo const& targetInfo : m_UniqueGOTargetInfo)
 data.HitTargets.push_back(targetInfo.TargetGUID); // Always hits
 
 for (CorpseTargetInfo const& targetInfo : m_UniqueCorpseTargetInfo)
 data.HitTargets.push_back(targetInfo.TargetGUID); // Always hits
 
 // Reset m_needAliveTargetMask for non channeled spell
 if (!m_spellInfo->IsChanneled())
 m_channelTargetEffectMask = 0;
}
 
int32 Spell::GetSpellCastDataAmmo()
{
 uint32 ammoInventoryType = 0;
 uint32 ammoDisplayID = 0;
 
 if (Player const* playerCaster = m_caster->ToPlayer())
 {
 Item* pItem = playerCaster->GetWeaponForAttack(RANGED_ATTACK);
 if (pItem)
 {
 ammoInventoryType = pItem->GetTemplate()->GetInventoryType();
 if (ammoInventoryType == INVTYPE_THROWN)
 ammoDisplayID = pItem->GetDisplayId(playerCaster);
 else if (playerCaster->HasAura(46699)) // Requires No Ammo
 {
 ammoDisplayID = 5996; // normal arrow
 ammoInventoryType = INVTYPE_AMMO;
 }
 }
 }
 else if (Unit const* unitCaster = m_caster->ToUnit())
 {
 uint32 nonRangedAmmoDisplayID = 0;
 uint32 nonRangedAmmoInventoryType = 0;
 for (uint8 i = BASE_ATTACK; i < MAX_ATTACK; ++i)
 {
 if (uint32 item_id = unitCaster->GetVirtualItemId(i))
 {
 if (ItemEntry const* itemEntry = sItemStore.LookupEntry(item_id))
 {
 if (itemEntry->ClassID == ITEM_CLASS_WEAPON)
 {
 switch (itemEntry->SubclassID)
 {
 case ITEM_SUBCLASS_WEAPON_THROWN:
 ammoDisplayID = sDB2Manager.GetItemDisplayId(item_id, unitCaster->GetVirtualItemAppearanceMod(i));
 ammoInventoryType = itemEntry->InventoryType;
 break;
 case ITEM_SUBCLASS_WEAPON_BOW:
 case ITEM_SUBCLASS_WEAPON_CROSSBOW:
 ammoDisplayID = 5996; // is this need fixing?
 ammoInventoryType = INVTYPE_AMMO;
 break;
 case ITEM_SUBCLASS_WEAPON_GUN:
 ammoDisplayID = 5998; // is this need fixing?
 ammoInventoryType = INVTYPE_AMMO;
 break;
 default:
 nonRangedAmmoDisplayID = sDB2Manager.GetItemDisplayId(item_id, unitCaster->GetVirtualItemAppearanceMod(i));
 nonRangedAmmoInventoryType = itemEntry->InventoryType;
 break;
 }
 
 if (ammoDisplayID)
 break;
 }
 }
 }
 }
 
 if (!ammoDisplayID && !ammoInventoryType)
 {
 ammoDisplayID = nonRangedAmmoDisplayID;
 ammoInventoryType = nonRangedAmmoInventoryType;
 }
 }
 
 return ammoDisplayID;
}
 
static std::pair<int32, SpellHealPredictionType> CalcPredictedHealing(SpellInfo const* spellInfo, Unit const* unitCaster, Unit* target, uint32 castItemEntry, int32 castItemLevel, Spell* spell, bool withPeriodic)
{
 int32 points = 0;
 SpellHealPredictionType type = SPELL_HEAL_PREDICTION_TARGET;
 for (SpellEffectInfo const& spellEffectInfo : spellInfo->GetEffects())
 {
 switch (spellEffectInfo.Effect)
 {
 case SPELL_EFFECT_HEAL:
 case SPELL_EFFECT_HEAL_PCT:
 points += unitCaster->SpellHealingBonusDone(target,
 spellInfo, spellEffectInfo.CalcValue(unitCaster, nullptr, target, nullptr, castItemEntry, castItemLevel),
 DIRECT_DAMAGE, spellEffectInfo, 1, spell);
 
 if (target != unitCaster && (spellEffectInfo.TargetA.GetTarget() == TARGET_UNIT_CASTER || spellEffectInfo.TargetB.GetTarget() == TARGET_UNIT_CASTER))
 type = SPELL_HEAL_PREDICTION_TARGET_AND_CASTER; // Binding Heal-like spells
 else if (spellEffectInfo.TargetA.GetCheckType() == TARGET_CHECK_PARTY || spellEffectInfo.TargetB.GetCheckType() == TARGET_CHECK_PARTY)
 type = SPELL_HEAL_PREDICTION_TARGET_PARTY; // Prayer of Healing (old party-wide targeting)
 break;
 default:
 break;
 }
 
 if (withPeriodic)
 {
 switch (spellEffectInfo.ApplyAuraName)
 {
 case SPELL_AURA_PERIODIC_HEAL:
 case SPELL_AURA_OBS_MOD_HEALTH:
 points += unitCaster->SpellHealingBonusDone(target,
 spellInfo, spellEffectInfo.CalcValue(unitCaster, nullptr, target, nullptr, castItemEntry, castItemLevel),
 DIRECT_DAMAGE, spellEffectInfo, 1, spell) * spellInfo->GetMaxTicks();
 break;
 case SPELL_AURA_PERIODIC_TRIGGER_SPELL:
 if (SpellInfo const* triggered = sSpellMgr->GetSpellInfo(spellEffectInfo.TriggerSpell, spellInfo->Difficulty))
 points += CalcPredictedHealing(triggered, unitCaster, target, castItemEntry, castItemLevel, nullptr, withPeriodic).first;
 break;
 default:
 break;
 }
 }
 }
 
 return { points, type };
}
 
void Spell::UpdateSpellHealPrediction(WorldPackets::Spells::SpellHealPrediction& healPrediction, bool withPeriodic)
{
 healPrediction.BeaconGUID = ObjectGuid::Empty;
 healPrediction.Points = 0;
 healPrediction.Type = SPELL_HEAL_PREDICTION_TARGET;
 
 Unit const* unitCaster = m_caster->ToUnit();
 
 if (Unit* target = m_targets.GetUnitTarget())
 {
 auto [points, type] = CalcPredictedHealing(m_spellInfo, unitCaster, target, m_castItemEntry, m_castItemLevel, this, withPeriodic);
 healPrediction.Points = points;
 healPrediction.Type = type;
 }
 
 static constexpr uint32 beaconSpellId = 53651;
 
 if (healPrediction.Type == SPELL_HEAL_PREDICTION_TARGET && unitCaster->HasAura(beaconSpellId, unitCaster->GetGUID()))
 {
 auto beacon = std::find_if(unitCaster->GetSingleCastAuras().begin(), unitCaster->GetSingleCastAuras().end(), [](Aura const* aura)
 {
 return aura->GetSpellInfo()->GetEffects().size() > EFFECT_1 && aura->GetSpellInfo()->GetEffect(EFFECT_1).TriggerSpell == beaconSpellId;
 });
 
 if (beacon != unitCaster->GetSingleCastAuras().end())
 {
 healPrediction.BeaconGUID = (*beacon)->GetOwner()->GetGUID();
 healPrediction.Type = SPELL_HEAL_PREDICTION_TARGET_AND_BEACON;
 }
 }
}
 
void Spell::SendSpellExecuteLog()
{
 if (_executeLogEffects.empty())
 return;
 
 WorldPackets::CombatLog::SpellExecuteLog spellExecuteLog;
 spellExecuteLog.Caster = m_caster->GetGUID();
 spellExecuteLog.SpellID = m_spellInfo->Id;
 spellExecuteLog.Effects = &_executeLogEffects;
 spellExecuteLog.LogData.Initialize(this);
 
 m_caster->SendCombatLogMessage(&spellExecuteLog);
 
 _executeLogEffects.clear();
}
 
SpellLogEffect& Spell::GetExecuteLogEffect(SpellEffectName effect)
{
 auto itr = std::find_if(_executeLogEffects.begin(), _executeLogEffects.end(), [effect](SpellLogEffect& log)
 {
 return log.Effect == effect;
 });
 if (itr != _executeLogEffects.end())
 return *itr;
 
 _executeLogEffects.emplace_back();
 _executeLogEffects.back().Effect = effect;
 return _executeLogEffects.back();
}
 
void Spell::ExecuteLogEffectTakeTargetPower(SpellEffectName effect, Unit* target, uint32 powerType, uint32 points, float amplitude)
{
 SpellLogEffectPowerDrainParams spellLogEffectPowerDrainParams;
 
 spellLogEffectPowerDrainParams.Victim = target->GetGUID();
 spellLogEffectPowerDrainParams.Points = points;
 spellLogEffectPowerDrainParams.PowerType = powerType;
 spellLogEffectPowerDrainParams.Amplitude = amplitude;
 
 GetExecuteLogEffectTargets(effect, &SpellLogEffect::PowerDrainTargets).push_back(spellLogEffectPowerDrainParams);
}
 
void Spell::ExecuteLogEffectExtraAttacks(SpellEffectName effect, Unit* victim, uint32 numAttacks)
{
 SpellLogEffectExtraAttacksParams spellLogEffectExtraAttacksParams;
 spellLogEffectExtraAttacksParams.Victim = victim->GetGUID();
 spellLogEffectExtraAttacksParams.NumAttacks = numAttacks;
 
 GetExecuteLogEffectTargets(effect, &SpellLogEffect::ExtraAttacksTargets).push_back(spellLogEffectExtraAttacksParams);
}
 
void Spell::SendSpellInterruptLog(Unit* victim, uint32 spellId)
{
 WorldPackets::CombatLog::SpellInterruptLog data;
 data.Caster = m_caster->GetGUID();
 data.Victim = victim->GetGUID();
 data.InterruptedSpellID = m_spellInfo->Id;
 data.SpellID = spellId;
 
 m_caster->SendMessageToSet(data.Write(), true);
}
 
void Spell::ExecuteLogEffectDurabilityDamage(SpellEffectName effect, Unit* victim, int32 itemId, int32 amount)
{
 SpellLogEffectDurabilityDamageParams spellLogEffectDurabilityDamageParams;
 spellLogEffectDurabilityDamageParams.Victim = victim->GetGUID();
 spellLogEffectDurabilityDamageParams.ItemID = itemId;
 spellLogEffectDurabilityDamageParams.Amount = amount;
 
 GetExecuteLogEffectTargets(effect, &SpellLogEffect::DurabilityDamageTargets).push_back(spellLogEffectDurabilityDamageParams);
}
 
void Spell::ExecuteLogEffectOpenLock(SpellEffectName effect, Object* obj)
{
 SpellLogEffectGenericVictimParams spellLogEffectGenericVictimParams;
 spellLogEffectGenericVictimParams.Victim = obj->GetGUID();
 
 GetExecuteLogEffectTargets(effect, &SpellLogEffect::GenericVictimTargets).push_back(spellLogEffectGenericVictimParams);
}
 
void Spell::ExecuteLogEffectCreateItem(SpellEffectName effect, uint32 entry)
{
 SpellLogEffectTradeSkillItemParams spellLogEffectTradeSkillItemParams;
 spellLogEffectTradeSkillItemParams.ItemID = entry;
 
 GetExecuteLogEffectTargets(effect, &SpellLogEffect::TradeSkillTargets).push_back(spellLogEffectTradeSkillItemParams);
}
 
void Spell::ExecuteLogEffectDestroyItem(SpellEffectName effect, uint32 entry)
{
 SpellLogEffectFeedPetParams spellLogEffectFeedPetParams;
 spellLogEffectFeedPetParams.ItemID = entry;
 
 GetExecuteLogEffectTargets(effect, &SpellLogEffect::FeedPetTargets).push_back(spellLogEffectFeedPetParams);
}
 
void Spell::ExecuteLogEffectSummonObject(SpellEffectName effect, WorldObject* obj)
{
 SpellLogEffectGenericVictimParams spellLogEffectGenericVictimParams;
 spellLogEffectGenericVictimParams.Victim = obj->GetGUID();
 
 GetExecuteLogEffectTargets(effect, &SpellLogEffect::GenericVictimTargets).push_back(spellLogEffectGenericVictimParams);
}
 
void Spell::ExecuteLogEffectUnsummonObject(SpellEffectName effect, WorldObject* obj)
{
 SpellLogEffectGenericVictimParams spellLogEffectGenericVictimParams;
 spellLogEffectGenericVictimParams.Victim = obj->GetGUID();
 
 GetExecuteLogEffectTargets(effect, &SpellLogEffect::GenericVictimTargets).push_back(spellLogEffectGenericVictimParams);
}
 
void Spell::ExecuteLogEffectResurrect(SpellEffectName effect, Unit* target)
{
 SpellLogEffectGenericVictimParams spellLogEffectGenericVictimParams;
 spellLogEffectGenericVictimParams.Victim = target->GetGUID();
 
 GetExecuteLogEffectTargets(effect, &SpellLogEffect::GenericVictimTargets).push_back(spellLogEffectGenericVictimParams);
}
 
void Spell::SendInterrupted(uint8 result)
{
 WorldPackets::Spells::SpellFailure failurePacket;
 failurePacket.CasterUnit = m_caster->GetGUID();
 failurePacket.CastID = m_castId;
 failurePacket.SpellID = m_spellInfo->Id;
 failurePacket.Visual = m_SpellVisual;
 failurePacket.Reason = result;
 m_caster->SendMessageToSet(failurePacket.Write(), true);
 
 WorldPackets::Spells::SpellFailedOther failedPacket;
 failedPacket.CasterUnit = m_caster->GetGUID();
 failedPacket.CastID = m_castId;
 failedPacket.SpellID = m_spellInfo->Id;
 failedPacket.Visual = m_SpellVisual;
 failedPacket.Reason = result;
 m_caster->SendMessageToSet(failedPacket.Write(), true);
}
 
void Spell::SendChannelUpdate(uint32 time)
{
 // GameObjects don't channel
 Unit* unitCaster = m_caster->ToUnit();
 if (!unitCaster)
 return;
 
 if (time == 0)
 {
 unitCaster->ClearChannelObjects();
 unitCaster->SetChannelSpellId(0);
 unitCaster->SetChannelVisual({});
 }
 
 WorldPackets::Spells::SpellChannelUpdate spellChannelUpdate;
 spellChannelUpdate.CasterGUID = unitCaster->GetGUID();
 spellChannelUpdate.TimeRemaining = time;
 unitCaster->SendMessageToSet(spellChannelUpdate.Write(), true);
}
 
void Spell::SendChannelStart(uint32 duration)
{
 // GameObjects don't channel
 Unit* unitCaster = m_caster->ToUnit();
 if (!unitCaster)
 return;
 
 m_timer = duration;
 
 if (!m_targets.HasDst())
 {
 uint32 channelAuraMask = 0;
 uint32 explicitTargetEffectMask = 0xFFFFFFFF;
 // if there is an explicit target, only add channel objects from effects that also hit it
 if (!m_targets.GetUnitTargetGUID().IsEmpty())
 {
 auto explicitTargetItr = std::find_if(m_UniqueTargetInfo.begin(), m_UniqueTargetInfo.end(), [&](TargetInfo const& target)
 {
 return target.TargetGUID == m_targets.GetUnitTargetGUID();
 });
 if (explicitTargetItr != m_UniqueTargetInfo.end())
 explicitTargetEffectMask = explicitTargetItr->EffectMask;
 }
 
 for (SpellEffectInfo const& spellEffectInfo : m_spellInfo->GetEffects())
 if (spellEffectInfo.IsEffect(SPELL_EFFECT_APPLY_AURA) && (explicitTargetEffectMask & (1u << spellEffectInfo.EffectIndex)))
 channelAuraMask |= 1 << spellEffectInfo.EffectIndex;
 
 for (TargetInfo const& target : m_UniqueTargetInfo)
 {
 if (!(target.EffectMask & channelAuraMask))
 continue;
 
 SpellAttr1 requiredAttribute = target.TargetGUID != unitCaster->GetGUID() ? SPELL_ATTR1_IS_CHANNELLED : SPELL_ATTR1_IS_SELF_CHANNELLED;
 if (!m_spellInfo->HasAttribute(requiredAttribute))
 continue;
 
 unitCaster->AddChannelObject(target.TargetGUID);
 }
 
 for (GOTargetInfo const& target : m_UniqueGOTargetInfo)
 if (target.EffectMask & channelAuraMask)
 unitCaster->AddChannelObject(target.TargetGUID);
 }
 else if (m_spellInfo->HasAttribute(SPELL_ATTR1_IS_SELF_CHANNELLED))
 unitCaster->AddChannelObject(unitCaster->GetGUID());
 
 if (Creature* creatureCaster = unitCaster->ToCreature())
 if (unitCaster->m_unitData->ChannelObjects.size() == 1 && unitCaster->m_unitData->ChannelObjects[0].IsUnit())
 if (!creatureCaster->HasSpellFocus(this))
 creatureCaster->SetSpellFocus(this, ObjectAccessor::GetWorldObject(*creatureCaster, unitCaster->m_unitData->ChannelObjects[0]));
 
 unitCaster->SetChannelSpellId(m_spellInfo->Id);
 unitCaster->SetChannelVisual(m_SpellVisual);
 
 WorldPackets::Spells::SpellChannelStart spellChannelStart;
 spellChannelStart.CasterGUID = unitCaster->GetGUID();
 spellChannelStart.SpellID = m_spellInfo->Id;
 spellChannelStart.Visual = m_SpellVisual;
 spellChannelStart.ChannelDuration = duration;
 
 uint32 schoolImmunityMask = unitCaster->GetSchoolImmunityMask();
 uint32 mechanicImmunityMask = unitCaster->GetMechanicImmunityMask();
 
 if (schoolImmunityMask || mechanicImmunityMask)
 {
 spellChannelStart.InterruptImmunities.emplace();
 spellChannelStart.InterruptImmunities->SchoolImmunities = schoolImmunityMask;
 spellChannelStart.InterruptImmunities->Immunities = mechanicImmunityMask;
 }
 
 if (m_spellInfo->HasAttribute(SPELL_ATTR8_HEAL_PREDICTION) && m_caster->IsUnit())
 {
 WorldPackets::Spells::SpellTargetedHealPrediction& healPrediction = spellChannelStart.HealPrediction.emplace();
 if (unitCaster->m_unitData->ChannelObjects.size() == 1 && unitCaster->m_unitData->ChannelObjects[0].IsUnit())
 healPrediction.TargetGUID = unitCaster->m_unitData->ChannelObjects[0];
 
 UpdateSpellHealPrediction(healPrediction.Predict, true);
 }
 
 unitCaster->SendMessageToSet(spellChannelStart.Write(), true);
}
 
void Spell::SendResurrectRequest(Player* target)
{
 // get resurrector name for creature resurrections, otherwise packet will be not accepted
 // for player resurrections the name is looked up by guid
 std::string sentName;
 if (m_caster->GetTypeId() != TYPEID_PLAYER)
 sentName = m_caster->GetNameForLocaleIdx(target->GetSession()->GetSessionDbLocaleIndex());
 
 WorldPackets::Spells::ResurrectRequest resurrectRequest;
 resurrectRequest.ResurrectOffererGUID = m_caster->GetGUID();
 resurrectRequest.ResurrectOffererVirtualRealmAddress = GetVirtualRealmAddress();
 resurrectRequest.Name = sentName;
 resurrectRequest.Sickness = m_caster->IsUnit() && m_caster->ToUnit()->IsSpiritHealer(); // "you'll be afflicted with resurrection sickness"
 resurrectRequest.UseTimer = !m_spellInfo->HasAttribute(SPELL_ATTR3_NO_RES_TIMER);
 if (Pet* pet = target->GetPet())
 if (CharmInfo* charmInfo = pet->GetCharmInfo())
 resurrectRequest.PetNumber = charmInfo->GetPetNumber();
 
 resurrectRequest.SpellID = m_spellInfo->Id;
 target->SendDirectMessage(resurrectRequest.Write());
}
 
void Spell::TakeCastItem()
{
 if (!m_CastItem)
 return;
 
 Player* player = m_caster->ToPlayer();
 if (!player)
 return;
 
 // not remove cast item at triggered spell (equipping, weapon damage, etc)
 if (_triggeredCastFlags & TRIGGERED_IGNORE_CAST_ITEM)
 return;
 
 ItemTemplate const* proto = m_CastItem->GetTemplate();
 
 if (!proto)
 {
 // This code is to avoid a crash
 // I'm not sure, if this is really an error, but I guess every item needs a prototype
 TC_LOG_ERROR("spells", "Cast item has no item prototype {}", m_CastItem->GetGUID().ToString());
 return;
 }
 
 bool expendable = false;
 bool withoutCharges = false;
 
 for (ItemEffectEntry const* itemEffect : m_CastItem->GetEffects())
 {
 if (itemEffect->LegacySlotIndex >= m_CastItem->m_itemData->SpellCharges.size())
 continue;
 
 // item has limited charges
 if (itemEffect->Charges)
 {
 if (itemEffect->Charges < 0)
 expendable = true;
 
 int32 charges = m_CastItem->GetSpellCharges(itemEffect->LegacySlotIndex);
 
 // item has charges left for this slot
 if (charges && itemEffect->SpellID == int32(m_spellInfo->Id))
 {
 (charges > 0) ? --charges : ++charges; // abs(charges) less at 1 after use
 if (proto->GetMaxStackSize() == 1)
 m_CastItem->SetSpellCharges(itemEffect->LegacySlotIndex, charges);
 m_CastItem->SetState(ITEM_CHANGED, player);
 }
 
 // all charges used
 withoutCharges = (charges == 0);
 }
 }
 
 if (expendable && withoutCharges)
 {
 uint32 count = 1;
 m_caster->ToPlayer()->DestroyItemCount(m_CastItem, count, true);
 
 // prevent crash at access to deleted m_targets.GetItemTarget
 if (m_CastItem == m_targets.GetItemTarget())
 m_targets.SetItemTarget(nullptr);
 
 m_CastItem = nullptr;
 m_castItemGUID.Clear();
 m_castItemEntry = 0;
 }
}
 
void Spell::TakePower()
{
 // GameObjects don't use power
 Unit* unitCaster = m_caster->ToUnit();
 if (!unitCaster)
 return;
 
 if (m_CastItem || m_triggeredByAuraSpell)
 return;
 
 //Don't take power if the spell is cast while .cheat power is enabled.
 if (unitCaster->GetTypeId() == TYPEID_PLAYER)
 {
 if (unitCaster->ToPlayer()->GetCommandStatus(CHEAT_POWER))
 return;
 }
 
 for (SpellPowerCost& cost : m_powerCost)
 {
 Powers powerType = Powers(cost.Power);
 bool hit = true;
 if (unitCaster->GetTypeId() == TYPEID_PLAYER)
 {
 if (m_spellInfo->HasAttribute(SPELL_ATTR1_DISCOUNT_POWER_ON_MISS))
 {
 ObjectGuid targetGUID = m_targets.GetUnitTargetGUID();
 if (!targetGUID.IsEmpty())
 {
 auto ihit = std::find_if(std::begin(m_UniqueTargetInfo), std::end(m_UniqueTargetInfo), [&](TargetInfo const& targetInfo) { return targetInfo.TargetGUID == targetGUID && targetInfo.MissCondition != SPELL_MISS_NONE; });
 if (ihit != std::end(m_UniqueTargetInfo))
 {
 hit = false;
 //lower spell cost on fail (by talent aura)
 if (Player* modOwner = unitCaster->GetSpellModOwner())
 modOwner->ApplySpellMod(m_spellInfo, SpellModOp::PowerCostOnMiss, cost.Amount);
 }
 }
 }
 }
 
 if (powerType == POWER_RUNES)
 {
 TakeRunePower(hit);
 continue;
 }
 
 if (!cost.Amount)
 continue;
 
 // health as power used
 if (powerType == POWER_HEALTH)
 {
 unitCaster->ModifyHealth(-cost.Amount);
 continue;
 }
 
 if (powerType >= MAX_POWERS)
 {
 TC_LOG_ERROR("spells", "Spell::TakePower: Unknown power type '{}'", powerType);
 continue;
 }
 
 unitCaster->ModifyPower(powerType, -cost.Amount);
 }
}
 
SpellCastResult Spell::CheckRuneCost() const
{
 int32 runeCost = std::accumulate(m_powerCost.begin(), m_powerCost.end(), 0, [](int32 totalCost, SpellPowerCost const& cost)
 {
 return totalCost + (cost.Power == POWER_RUNES ? cost.Amount : 0);
 });
 
 if (!runeCost)
 return SPELL_CAST_OK;
 
 Player* player = m_caster->ToPlayer();
 if (!player)
 return SPELL_CAST_OK;
 
 if (player->GetClass() != CLASS_DEATH_KNIGHT)
 return SPELL_CAST_OK;
 
 int32 readyRunes = 0;
 for (int32 i = 0; i < player->GetMaxPower(POWER_RUNES); ++i)
 if (player->GetRuneCooldown(i) == 0)
 ++readyRunes;
 
 if (readyRunes < runeCost)
 return SPELL_FAILED_NO_POWER; // not sure if result code is correct
 
 return SPELL_CAST_OK;
}
 
void Spell::TakeRunePower(bool didHit)
{
 if (m_caster->GetTypeId() != TYPEID_PLAYER || m_caster->ToPlayer()->GetClass() != CLASS_DEATH_KNIGHT)
 return;
 
 Player* player = m_caster->ToPlayer();
 m_runesState = player->GetRunesState(); // store previous state
 
 int32 runeCost = std::accumulate(m_powerCost.begin(), m_powerCost.end(), 0, [](int32 totalCost, SpellPowerCost const& cost)
 {
 return totalCost + (cost.Power == POWER_RUNES ? cost.Amount : 0);
 });
 
 for (int32 i = 0; i < player->GetMaxPower(POWER_RUNES); ++i)
 {
 if (!player->GetRuneCooldown(i) && runeCost > 0)
 {
 player->SetRuneCooldown(i, didHit ? player->GetRuneBaseCooldown() : uint32(RUNE_MISS_COOLDOWN));
 --runeCost;
 }
 }
}
 
void Spell::TakeReagents()
{
 if (m_caster->GetTypeId() != TYPEID_PLAYER)
 return;
 
 // do not take reagents for these item casts
 if (m_CastItem && m_CastItem->GetTemplate()->HasFlag(ITEM_FLAG_NO_REAGENT_COST))
 return;
 
 Player* p_caster = m_caster->ToPlayer();
 if (p_caster->CanNoReagentCast(m_spellInfo))
 return;
 
 for (uint32 x = 0; x < MAX_SPELL_REAGENTS; ++x)
 {
 if (m_spellInfo->Reagent[x] <= 0)
 continue;
 
 uint32 itemid = m_spellInfo->Reagent[x];
 uint32 itemcount = m_spellInfo->ReagentCount[x];
 
 // if CastItem is also spell reagent
 if (m_CastItem && m_CastItem->GetEntry() == itemid)
 {
 for (ItemEffectEntry const* itemEffect : m_CastItem->GetEffects())
 {
 if (itemEffect->LegacySlotIndex >= m_CastItem->m_itemData->SpellCharges.size())
 continue;
 
 // CastItem will be used up and does not count as reagent
 int32 charges = m_CastItem->GetSpellCharges(itemEffect->LegacySlotIndex);
 if (itemEffect->Charges < 0 && abs(charges) < 2)
 {
 ++itemcount;
 break;
 }
 }
 
 m_CastItem = nullptr;
 m_castItemGUID.Clear();
 m_castItemEntry = 0;
 }
 
 // if GetItemTarget is also spell reagent
 if (m_targets.GetItemTargetEntry() == itemid)
 m_targets.SetItemTarget(nullptr);
 
 p_caster->DestroyItemCount(itemid, itemcount, true);
 }
 
 for (SpellReagentsCurrencyEntry const* reagentsCurrency : m_spellInfo->ReagentsCurrency)
 p_caster->RemoveCurrency(reagentsCurrency->CurrencyTypesID, reagentsCurrency->CurrencyCount, CurrencyDestroyReason::Spell);
}
 
void Spell::HandleThreatSpells()
{
 // wild GameObject spells don't cause threat
 Unit* unitCaster = (m_originalCaster ? m_originalCaster : m_caster->ToUnit());
 if (!unitCaster)
 return;
 
 if (m_UniqueTargetInfo.empty())
 return;
 
 if (!m_spellInfo->HasInitialAggro())
 return;
 
 float threat = 0.0f;
 if (SpellThreatEntry const* threatEntry = sSpellMgr->GetSpellThreatEntry(m_spellInfo->Id))
 {
 if (threatEntry->apPctMod != 0.0f)
 threat += threatEntry->apPctMod * unitCaster->GetTotalAttackPowerValue(BASE_ATTACK);
 
 threat += threatEntry->flatMod;
 }
 else if (!m_spellInfo->HasAttribute(SPELL_ATTR0_CU_NO_INITIAL_THREAT))
 threat += m_spellInfo->SpellLevel;
 
 // past this point only multiplicative effects occur
 if (threat == 0.0f)
 return;
 
 // since 2.0.1 threat from positive effects also is distributed among all targets, so the overall caused threat is at most the defined bonus
 threat /= m_UniqueTargetInfo.size();
 
 for (auto ihit = m_UniqueTargetInfo.begin(); ihit != m_UniqueTargetInfo.end(); ++ihit)
 {
 float threatToAdd = threat;
 if (ihit->MissCondition != SPELL_MISS_NONE)
 threatToAdd = 0.0f;
 
 Unit* target = ObjectAccessor::GetUnit(*unitCaster, ihit->TargetGUID);
 if (!target)
 continue;
 
 // positive spells distribute threat among all units that are in combat with target, like healing
 if (IsPositive())
 target->GetThreatManager().ForwardThreatForAssistingMe(unitCaster, threatToAdd, m_spellInfo);
 // for negative spells threat gets distributed among affected targets
 else
 {
 if (!target->CanHaveThreatList())
 continue;
 
 target->GetThreatManager().AddThreat(unitCaster, threatToAdd, m_spellInfo, true);
 }
 }
 TC_LOG_DEBUG("spells", "Spell {}, added an additional {} threat for {} {} target(s)", m_spellInfo->Id, threat, IsPositive() ? "assisting" : "harming", uint32(m_UniqueTargetInfo.size()));
}
 
void Spell::HandleEffects(Unit* pUnitTarget, Item* pItemTarget, GameObject* pGoTarget, Corpse* pCorpseTarget, SpellEffectInfo const& spellEffectInfo, SpellEffectHandleMode mode)
{
 effectHandleMode = mode;
 unitTarget = pUnitTarget;
 itemTarget = pItemTarget;
 gameObjTarget = pGoTarget;
 m_corpseTarget = pCorpseTarget;
 destTarget = &m_destTargets[spellEffectInfo.EffectIndex]._position;
 effectInfo = &spellEffectInfo;
 
 damage = CalculateDamage(spellEffectInfo, unitTarget, &variance);
 
 bool preventDefault = CallScriptEffectHandlers(spellEffectInfo.EffectIndex, mode);
 
 if (!preventDefault)
 (this->*SpellEffectHandlers[spellEffectInfo.Effect].Value)();
}
 
/*static*/ Spell const* Spell::ExtractSpellFromEvent(BasicEvent* event)
{
 if (SpellEvent* spellEvent = dynamic_cast<SpellEvent*>(event))
 return spellEvent->GetSpell();
 
 return nullptr;
}
 
SpellCastResult Spell::CheckCast(bool strict, int32* param1 /*= nullptr*/, int32* param2 /*= nullptr*/)
{
 // check death state
 if (m_caster->ToUnit() && !m_caster->ToUnit()->IsAlive() && !m_spellInfo->IsPassive() && !(m_spellInfo->HasAttribute(SPELL_ATTR0_ALLOW_CAST_WHILE_DEAD) || (IsTriggered() && !m_triggeredByAuraSpell)))
 return SPELL_FAILED_CASTER_DEAD;
 
 // Prevent cheating in case the player has an immunity effect and tries to interact with a non-allowed gameobject. The error message is handled by the client so we don't report anything here
 if (m_caster->ToPlayer() && m_targets.GetGOTarget())
 {
 if (m_targets.GetGOTarget()->GetGOInfo()->GetNoDamageImmune() && m_caster->ToUnit()->HasUnitFlag(UNIT_FLAG_IMMUNE))
 return SPELL_FAILED_DONT_REPORT;
 }
 
 // check cooldowns to prevent cheating
 if (!m_spellInfo->IsPassive())
 {
 if (Player const* playerCaster = m_caster->ToPlayer())
 {
 //can cast triggered (by aura only?) spells while have this flag
 if (!(_triggeredCastFlags & TRIGGERED_IGNORE_CASTER_AURASTATE))
 {
 // These two auras check SpellFamilyName defined by db2 class data instead of current spell SpellFamilyName
 if (playerCaster->HasAuraType(SPELL_AURA_DISABLE_CASTING_EXCEPT_ABILITIES)
 && !m_spellInfo->HasAttribute(SPELL_ATTR0_USES_RANGED_SLOT)
 && !m_spellInfo->HasEffect(SPELL_EFFECT_ATTACK)
 && !m_spellInfo->HasAttribute(SPELL_ATTR12_IGNORE_CASTING_DISABLED)
 && !playerCaster->HasAuraTypeWithFamilyFlags(SPELL_AURA_DISABLE_CASTING_EXCEPT_ABILITIES, sChrClassesStore.AssertEntry(playerCaster->GetClass())->SpellClassSet, m_spellInfo->SpellFamilyFlags))
 return SPELL_FAILED_CANT_DO_THAT_RIGHT_NOW;
 
 if (playerCaster->HasAuraType(SPELL_AURA_DISABLE_ATTACKING_EXCEPT_ABILITIES))
 {
 if (!playerCaster->HasAuraTypeWithFamilyFlags(SPELL_AURA_DISABLE_ATTACKING_EXCEPT_ABILITIES, sChrClassesStore.AssertEntry(playerCaster->GetClass())->SpellClassSet, m_spellInfo->SpellFamilyFlags))
 {
 if (m_spellInfo->HasAttribute(SPELL_ATTR0_USES_RANGED_SLOT)
 || m_spellInfo->IsNextMeleeSwingSpell()
 || m_spellInfo->HasAttribute(SPELL_ATTR1_INITIATES_COMBAT_ENABLES_AUTO_ATTACK)
 || m_spellInfo->HasAttribute(SPELL_ATTR2_INITIATE_COMBAT_POST_CAST_ENABLES_AUTO_ATTACK)
 || m_spellInfo->HasEffect(SPELL_EFFECT_ATTACK)
 || m_spellInfo->HasEffect(SPELL_EFFECT_NORMALIZED_WEAPON_DMG)
 || m_spellInfo->HasEffect(SPELL_EFFECT_WEAPON_DAMAGE_NOSCHOOL)
 || m_spellInfo->HasEffect(SPELL_EFFECT_WEAPON_PERCENT_DAMAGE)
 || m_spellInfo->HasEffect(SPELL_EFFECT_WEAPON_DAMAGE))
 return SPELL_FAILED_CANT_DO_THAT_RIGHT_NOW;
 }
 }
 }
 
 // check if we are using a potion in combat for the 2nd+ time. Cooldown is added only after caster gets out of combat
 if (!IsIgnoringCooldowns() && playerCaster->GetLastPotionId() && m_CastItem && (m_CastItem->IsPotion() || m_spellInfo->IsCooldownStartedOnEvent()))
 return SPELL_FAILED_NOT_READY;
 }
 
 if (!IsIgnoringCooldowns() && m_caster->ToUnit() && (!m_spellInfo->HasAttribute(SPELL_ATTR12_START_COOLDOWN_ON_CAST_START) || strict))
 {
 if (!m_caster->ToUnit()->GetSpellHistory()->IsReady(m_spellInfo, m_castItemEntry))
 {
 if (m_triggeredByAuraSpell)
 return SPELL_FAILED_DONT_REPORT;
 else
 return SPELL_FAILED_NOT_READY;
 }
 
 if ((IsAutoRepeat() || m_spellInfo->CategoryId == 76) && !m_caster->ToUnit()->isAttackReady(RANGED_ATTACK))
 return SPELL_FAILED_DONT_REPORT;
 }
 }
 
 if (m_spellInfo->HasAttribute(SPELL_ATTR7_DEBUG_SPELL) && m_caster->IsUnit() && !m_caster->ToUnit()->HasUnitFlag2(UNIT_FLAG2_ALLOW_CHEAT_SPELLS))
 {
 m_customError = SPELL_CUSTOM_ERROR_GM_ONLY;
 return SPELL_FAILED_CUSTOM_ERROR;
 }
 
 if (m_spellInfo->HasAttribute(SPELL_ATTR8_ONLY_PLAYERS_CAN_CAST_THIS_SPELL) && !m_caster->IsPlayer())
 return SPELL_FAILED_CASTER_AURASTATE;
 
 // Check global cooldown
 if (strict && !(_triggeredCastFlags & TRIGGERED_IGNORE_GCD) && HasGlobalCooldown())
 return !m_spellInfo->HasAttribute(SPELL_ATTR0_COOLDOWN_ON_EVENT) ? SPELL_FAILED_NOT_READY : SPELL_FAILED_DONT_REPORT;
 
 // only triggered spells can be processed an ended battleground
 if (!IsTriggered() && m_caster->GetTypeId() == TYPEID_PLAYER)
 if (Battleground* bg = m_caster->ToPlayer()->GetBattleground())
 if (bg->GetStatus() == STATUS_WAIT_LEAVE)
 return SPELL_FAILED_DONT_REPORT;
 
 if (m_caster->GetTypeId() == TYPEID_PLAYER && VMAP::VMapFactory::createOrGetVMapManager()->isLineOfSightCalcEnabled())
 {
 if (m_spellInfo->HasAttribute(SPELL_ATTR0_ONLY_OUTDOORS) &&
 !m_caster->IsOutdoors())
 return SPELL_FAILED_ONLY_OUTDOORS;
 
 if (m_spellInfo->HasAttribute(SPELL_ATTR0_ONLY_INDOORS) &&
 m_caster->IsOutdoors())
 return SPELL_FAILED_ONLY_INDOORS;
 }
 
 if (Unit* unitCaster = m_caster->ToUnit())
 {
 if (m_spellInfo->HasAttribute(SPELL_ATTR5_NOT_AVAILABLE_WHILE_CHARMED) && unitCaster->IsCharmed())
 return SPELL_FAILED_CHARMED;
 
 // only check at first call, Stealth auras are already removed at second call
 // for now, ignore triggered spells
 if (strict && !(_triggeredCastFlags & TRIGGERED_IGNORE_SHAPESHIFT))
 {
 bool checkForm = true;
 // Ignore form req aura
 Unit::AuraEffectList const& ignore = unitCaster->GetAuraEffectsByType(SPELL_AURA_MOD_IGNORE_SHAPESHIFT);
 for (AuraEffect const* aurEff : ignore)
 {
 if (!aurEff->IsAffectingSpell(m_spellInfo))
 continue;
 
 checkForm = false;
 break;
 }
 
 if (checkForm)
 {
 // Cannot be used in this stance/form
 SpellCastResult shapeError = m_spellInfo->CheckShapeshift(unitCaster->GetShapeshiftForm());
 if (shapeError != SPELL_CAST_OK)
 return shapeError;
 
 if (m_spellInfo->HasAttribute(SPELL_ATTR0_ONLY_STEALTHED) && !(unitCaster->HasStealthAura()))
 return SPELL_FAILED_ONLY_STEALTHED;
 }
 }
 
 // caster state requirements
 // not for triggered spells (needed by execute)
 if (!(_triggeredCastFlags & TRIGGERED_IGNORE_CASTER_AURASTATE))
 {
 if (m_spellInfo->CasterAuraState && !unitCaster->HasAuraState(AuraStateType(m_spellInfo->CasterAuraState), m_spellInfo, unitCaster))
 return SPELL_FAILED_CASTER_AURASTATE;
 if (m_spellInfo->ExcludeCasterAuraState && unitCaster->HasAuraState(AuraStateType(m_spellInfo->ExcludeCasterAuraState), m_spellInfo, unitCaster))
 return SPELL_FAILED_CASTER_AURASTATE;
 
 // Note: spell 62473 requres casterAuraSpell = triggering spell
 if (m_spellInfo->CasterAuraSpell && !unitCaster->HasAura(m_spellInfo->CasterAuraSpell))
 return SPELL_FAILED_CASTER_AURASTATE;
 if (m_spellInfo->ExcludeCasterAuraSpell && unitCaster->HasAura(m_spellInfo->ExcludeCasterAuraSpell))
 return SPELL_FAILED_CASTER_AURASTATE;
 
 if (m_spellInfo->CasterAuraType && !unitCaster->HasAuraType(m_spellInfo->CasterAuraType))
 return SPELL_FAILED_CASTER_AURASTATE;
 if (m_spellInfo->ExcludeCasterAuraType && unitCaster->HasAuraType(m_spellInfo->ExcludeCasterAuraType))
 return SPELL_FAILED_CASTER_AURASTATE;
 
 if (unitCaster->IsInCombat() && !m_spellInfo->CanBeUsedInCombat(unitCaster))
 return SPELL_FAILED_AFFECTING_COMBAT;
 }
 
 // Check vehicle flags
 if (!(_triggeredCastFlags & TRIGGERED_IGNORE_CASTER_MOUNTED_OR_ON_VEHICLE))
 {
 SpellCastResult vehicleCheck = m_spellInfo->CheckVehicle(unitCaster);
 if (vehicleCheck != SPELL_CAST_OK)
 return vehicleCheck;
 }
 }
 
 // check spell cast conditions from database
 {
 ConditionSourceInfo condInfo = ConditionSourceInfo(m_caster, m_targets.GetObjectTarget());
 if (!sConditionMgr->IsObjectMeetingNotGroupedConditions(CONDITION_SOURCE_TYPE_SPELL, m_spellInfo->Id, condInfo))
 {
 // mLastFailedCondition can be NULL if there was an error processing the condition in Condition::Meets (i.e. wrong data for ConditionTarget or others)
 if (condInfo.mLastFailedCondition && condInfo.mLastFailedCondition->ErrorType)
 {
 if (condInfo.mLastFailedCondition->ErrorType == SPELL_FAILED_CUSTOM_ERROR)
 m_customError = SpellCustomErrors(condInfo.mLastFailedCondition->ErrorTextId);
 return SpellCastResult(condInfo.mLastFailedCondition->ErrorType);
 }
 
 if (!condInfo.mLastFailedCondition || !condInfo.mLastFailedCondition->ConditionTarget)
 return SPELL_FAILED_CASTER_AURASTATE;
 return SPELL_FAILED_BAD_TARGETS;
 }
 }
 
 // Don't check explicit target for passive spells (workaround) (check should be skipped only for learn case)
 // those spells may have incorrect target entries or not filled at all (for example 15332)
 // such spells when learned are not targeting anyone using targeting system, they should apply directly to caster instead
 // also, such casts shouldn't be sent to client
 if (!(m_spellInfo->IsPassive() && (!m_targets.GetUnitTarget() || m_targets.GetUnitTarget() == m_caster)))
 {
 // Check explicit target for m_originalCaster - todo: get rid of such workarounds
 WorldObject* caster = m_caster;
 // in case of gameobjects like traps, we need the gameobject itself to check target validity
 // otherwise, if originalCaster is far away and cannot detect the target, the trap would not hit the target
 if (m_originalCaster && !caster->ToGameObject())
 caster = m_originalCaster;
 
 SpellCastResult castResult = m_spellInfo->CheckExplicitTarget(caster, m_targets.GetObjectTarget(), m_targets.GetItemTarget());
 if (castResult != SPELL_CAST_OK)
 return castResult;
 }
 
 if (Unit* target = m_targets.GetUnitTarget())
 {
 SpellCastResult castResult = m_spellInfo->CheckTarget(m_caster, target, m_caster->GetTypeId() == TYPEID_GAMEOBJECT); // skip stealth checks for GO casts
 if (castResult != SPELL_CAST_OK)
 return castResult;
 
 // If it's not a melee spell, check if vision is obscured by SPELL_AURA_INTERFERE_TARGETTING
 if (m_spellInfo->DmgClass != SPELL_DAMAGE_CLASS_MELEE)
 {
 if (Unit const* unitCaster = m_caster->ToUnit())
 {
 for (AuraEffect const* auraEff : unitCaster->GetAuraEffectsByType(SPELL_AURA_INTERFERE_TARGETTING))
 if (!unitCaster->IsFriendlyTo(auraEff->GetCaster()) && !target->HasAura(auraEff->GetId(), auraEff->GetCasterGUID()))
 return SPELL_FAILED_VISION_OBSCURED;
 
 for (AuraEffect const* auraEff : target->GetAuraEffectsByType(SPELL_AURA_INTERFERE_TARGETTING))
 if (!unitCaster->IsFriendlyTo(auraEff->GetCaster()) && (!target->HasAura(auraEff->GetId(), auraEff->GetCasterGUID()) || !unitCaster->HasAura(auraEff->GetId(), auraEff->GetCasterGUID())))
 return SPELL_FAILED_VISION_OBSCURED;
 }
 }
 
 if (target != m_caster)
 {
 // Must be behind the target
 if ((m_spellInfo->HasAttribute(SPELL_ATTR0_CU_REQ_CASTER_BEHIND_TARGET)) && target->HasInArc(static_cast<float>(M_PI), m_caster))
 return SPELL_FAILED_NOT_BEHIND;
 
 // Target must be facing you
 if ((m_spellInfo->HasAttribute(SPELL_ATTR0_CU_REQ_TARGET_FACING_CASTER)) && !target->HasInArc(static_cast<float>(M_PI), m_caster))
 return SPELL_FAILED_NOT_INFRONT;
 
 // Ignore LOS for gameobjects casts
 if (m_caster->GetTypeId() != TYPEID_GAMEOBJECT)
 {
 WorldObject* losTarget = m_caster;
 if (IsTriggered() && m_triggeredByAuraSpell)
 if (DynamicObject* dynObj = m_caster->ToUnit()->GetDynObject(m_triggeredByAuraSpell->Id))
 losTarget = dynObj;
 
 if (!IsWithinLOS(losTarget, target, true, VMAP::ModelIgnoreFlags::M2))
 return SPELL_FAILED_LINE_OF_SIGHT;
 }
 }
 }
 
 // Check for line of sight for spells with dest
 if (m_targets.HasDst())
 if (!IsWithinLOS(m_caster, *m_targets.GetDstPos(), VMAP::ModelIgnoreFlags::M2))
 return SPELL_FAILED_LINE_OF_SIGHT;
 
 // check pet presence
 if (Unit* unitCaster = m_caster->ToUnit())
 {
 if (m_spellInfo->HasAttribute(SPELL_ATTR2_NO_ACTIVE_PETS))
 if (!unitCaster->GetPetGUID().IsEmpty())
 return SPELL_FAILED_ALREADY_HAVE_PET;
 
 for (SpellEffectInfo const& spellEffectInfo : m_spellInfo->GetEffects())
 {
 if (spellEffectInfo.TargetA.GetTarget() == TARGET_UNIT_PET)
 {
 if (!unitCaster->GetGuardianPet())
 {
 if (m_triggeredByAuraSpell) // not report pet not existence for triggered spells
 return SPELL_FAILED_DONT_REPORT;
 else
 return SPELL_FAILED_NO_PET;
 }
 break;
 }
 }
 }
 
 // Spell cast only in battleground
 if (m_spellInfo->HasAttribute(SPELL_ATTR3_ONLY_BATTLEGROUNDS))
 if (!m_caster->GetMap()->IsBattleground())
 return SPELL_FAILED_ONLY_BATTLEGROUNDS;
 
 // do not allow spells to be cast in arenas or rated battlegrounds
 if (Player* player = m_caster->ToPlayer())
 if (player->InArena()/* || player->InRatedBattleGround() NYI*/)
 {
 SpellCastResult castResult = CheckArenaAndRatedBattlegroundCastRules();
 if (castResult != SPELL_CAST_OK)
 return castResult;
 }
 
 // zone check
 if (m_caster->GetTypeId() != TYPEID_PLAYER || !m_caster->ToPlayer()->IsGameMaster())
 {
 uint32 zone, area;
 m_caster->GetZoneAndAreaId(zone, area);
 
 SpellCastResult locRes = m_spellInfo->CheckLocation(m_caster->GetMapId(), zone, area, m_caster->ToPlayer());
 if (locRes != SPELL_CAST_OK)
 return locRes;
 }
 
 // not let players cast spells at mount (and let do it to creatures)
 if (!(_triggeredCastFlags & TRIGGERED_IGNORE_CASTER_MOUNTED_OR_ON_VEHICLE))
 {
 if (m_caster->GetTypeId() == TYPEID_PLAYER && m_caster->ToPlayer()->IsMounted() && !m_spellInfo->IsPassive() && !m_spellInfo->HasAttribute(SPELL_ATTR0_ALLOW_WHILE_MOUNTED))
 {
 if (m_caster->ToPlayer()->IsInFlight())
 return SPELL_FAILED_NOT_ON_TAXI;
 else
 return SPELL_FAILED_NOT_MOUNTED;
 }
 }
 
 // check spell focus object
 if (m_spellInfo->RequiresSpellFocus)
 {
 if (!m_caster->IsUnit() || !m_caster->ToUnit()->HasAuraTypeWithMiscvalue(SPELL_AURA_PROVIDE_SPELL_FOCUS, m_spellInfo->RequiresSpellFocus))
 {
 focusObject = SearchSpellFocus();
 if (!focusObject)
 return SPELL_FAILED_REQUIRES_SPELL_FOCUS;
 }
 }
 
 SpellCastResult castResult = SPELL_CAST_OK;
 
 // always (except passive spells) check items (only player related checks)
 if (!m_spellInfo->IsPassive())
 {
 castResult = CheckItems(param1, param2);
 if (castResult != SPELL_CAST_OK)
 return castResult;
 }
 
 // Triggered spells also have range check
 castResult = CheckRange(strict);
 if (castResult != SPELL_CAST_OK)
 return castResult;
 
 if (!(_triggeredCastFlags & TRIGGERED_IGNORE_POWER_AND_REAGENT_COST))
 {
 castResult = CheckPower();
 if (castResult != SPELL_CAST_OK)
 return castResult;
 }
 
 if (!(_triggeredCastFlags & TRIGGERED_IGNORE_CASTER_AURAS))
 {
 castResult = CheckCasterAuras(param1);
 if (castResult != SPELL_CAST_OK)
 return castResult;
 }
 
 // script hook
 castResult = CallScriptCheckCastHandlers();
 if (castResult != SPELL_CAST_OK)
 return castResult;
 
 uint32 approximateAuraEffectMask = 0;
 uint32 nonAuraEffectMask = 0;
 for (SpellEffectInfo const& spellEffectInfo : m_spellInfo->GetEffects())
 {
 // for effects of spells that have only one target
 switch (spellEffectInfo.Effect)
 {
 case SPELL_EFFECT_DUMMY:
 {
 if (m_spellInfo->Id == 19938) // Awaken Peon
 {
 Unit* unit = m_targets.GetUnitTarget();
 if (!unit || !unit->HasAura(17743))
 return SPELL_FAILED_BAD_TARGETS;
 }
 else if (m_spellInfo->Id == 31789) // Righteous Defense
 {
 if (m_caster->GetTypeId() != TYPEID_PLAYER)
 return SPELL_FAILED_DONT_REPORT;
 
 Unit* target = m_targets.GetUnitTarget();
 if (!target || !target->IsFriendlyTo(m_caster) || target->getAttackers().empty())
 return SPELL_FAILED_BAD_TARGETS;
 
 }
 break;
 }
 case SPELL_EFFECT_LEARN_SPELL:
 {
 if (spellEffectInfo.TargetA.GetTarget() != TARGET_UNIT_PET)
 break;
 
 Pet* pet = m_caster->ToPlayer()->GetPet();
 if (!pet)
 return SPELL_FAILED_NO_PET;
 
 SpellInfo const* learn_spellproto = sSpellMgr->GetSpellInfo(spellEffectInfo.TriggerSpell, DIFFICULTY_NONE);
 if (!learn_spellproto)
 return SPELL_FAILED_NOT_KNOWN;
 
 if (m_spellInfo->SpellLevel > pet->GetLevel())
 return SPELL_FAILED_LOWLEVEL;
 
 break;
 }
 case SPELL_EFFECT_UNLOCK_GUILD_VAULT_TAB:
 {
 if (m_caster->GetTypeId() != TYPEID_PLAYER)
 return SPELL_FAILED_BAD_TARGETS;
 if (Guild* guild = m_caster->ToPlayer()->GetGuild())
 if (guild->GetLeaderGUID() != m_caster->ToPlayer()->GetGUID())
 return SPELL_FAILED_CANT_DO_THAT_RIGHT_NOW;
 break;
 }
 case SPELL_EFFECT_LEARN_PET_SPELL:
 {
 // check target only for unit target case
 if (Unit* unit = m_targets.GetUnitTarget())
 {
 if (m_caster->GetTypeId() != TYPEID_PLAYER)
 return SPELL_FAILED_BAD_TARGETS;
 
 Pet* pet = unit->ToPet();
 if (!pet || pet->GetOwner() != m_caster)
 return SPELL_FAILED_BAD_TARGETS;
 
 SpellInfo const* learn_spellproto = sSpellMgr->GetSpellInfo(spellEffectInfo.TriggerSpell, DIFFICULTY_NONE);
 
 if (!learn_spellproto)
 return SPELL_FAILED_NOT_KNOWN;
 
 if (m_spellInfo->SpellLevel > pet->GetLevel())
 return SPELL_FAILED_LOWLEVEL;
 }
 break;
 }
 case SPELL_EFFECT_APPLY_GLYPH:
 {
 if (m_caster->GetTypeId() != TYPEID_PLAYER)
 return SPELL_FAILED_GLYPH_NO_SPEC;
 
 Player* caster = m_caster->ToPlayer();
 if (!caster->HasSpell(m_misc.SpellId))
 return SPELL_FAILED_NOT_KNOWN;
 
 if (uint32 glyphId = spellEffectInfo.MiscValue)
 {
 GlyphPropertiesEntry const* glyphProperties = sGlyphPropertiesStore.LookupEntry(glyphId);
 if (!glyphProperties)
 return SPELL_FAILED_INVALID_GLYPH;
 
 std::vector<uint32> const* glyphBindableSpells = sDB2Manager.GetGlyphBindableSpells(glyphId);
 if (!glyphBindableSpells)
 return SPELL_FAILED_INVALID_GLYPH;
 
 if (std::find(glyphBindableSpells->begin(), glyphBindableSpells->end(), m_misc.SpellId) == glyphBindableSpells->end())
 return SPELL_FAILED_INVALID_GLYPH;
 
 if (std::vector<ChrSpecialization> const* glyphRequiredSpecs = sDB2Manager.GetGlyphRequiredSpecs(glyphId))
 {
 if (caster->GetPrimarySpecialization() == ChrSpecialization::None)
 return SPELL_FAILED_GLYPH_NO_SPEC;
 
 if (std::find(glyphRequiredSpecs->begin(), glyphRequiredSpecs->end(), caster->GetPrimarySpecialization()) == glyphRequiredSpecs->end())
 return SPELL_FAILED_GLYPH_INVALID_SPEC;
 }
 
 uint32 replacedGlyph = 0;
 for (uint32 activeGlyphId : caster->GetGlyphs(caster->GetActiveTalentGroup()))
 {
 if (std::vector<uint32> const* activeGlyphBindableSpells = sDB2Manager.GetGlyphBindableSpells(activeGlyphId))
 {
 if (std::find(activeGlyphBindableSpells->begin(), activeGlyphBindableSpells->end(), m_misc.SpellId) != activeGlyphBindableSpells->end())
 {
 replacedGlyph = activeGlyphId;
 break;
 }
 }
 }
 
 for (uint32 activeGlyphId : caster->GetGlyphs(caster->GetActiveTalentGroup()))
 {
 if (activeGlyphId == replacedGlyph)
 continue;
 
 if (activeGlyphId == glyphId)
 return SPELL_FAILED_UNIQUE_GLYPH;
 
 if (sGlyphPropertiesStore.AssertEntry(activeGlyphId)->GlyphExclusiveCategoryID == glyphProperties->GlyphExclusiveCategoryID)
 return SPELL_FAILED_GLYPH_EXCLUSIVE_CATEGORY;
 }
 }
 break;
 }
 case SPELL_EFFECT_FEED_PET:
 {
 if (m_caster->GetTypeId() != TYPEID_PLAYER)
 return SPELL_FAILED_BAD_TARGETS;
 
 Item* foodItem = m_targets.GetItemTarget();
 if (!foodItem)
 return SPELL_FAILED_BAD_TARGETS;
 
 Pet* pet = m_caster->ToPlayer()->GetPet();
 if (!pet)
 return SPELL_FAILED_NO_PET;
 
 if (!pet->HaveInDiet(foodItem->GetTemplate()))
 return SPELL_FAILED_WRONG_PET_FOOD;
 
 if (foodItem->GetTemplate()->GetBaseItemLevel() + 30 <= pet->GetLevel())
 return SPELL_FAILED_FOOD_LOWLEVEL;
 
 if (m_caster->ToPlayer()->IsInCombat() || pet->IsInCombat())
 return SPELL_FAILED_AFFECTING_COMBAT;
 
 break;
 }
 case SPELL_EFFECT_CHARGE:
 {
 Unit* unitCaster = m_caster->ToUnit();
 if (!unitCaster)
 return SPELL_FAILED_BAD_TARGETS;
 
 if (!(_triggeredCastFlags & TRIGGERED_IGNORE_CASTER_AURAS) && unitCaster->HasUnitState(UNIT_STATE_ROOT))
 return SPELL_FAILED_ROOTED;
 
 if (GetSpellInfo()->NeedsExplicitUnitTarget())
 {
 Unit* target = m_targets.GetUnitTarget();
 if (!target)
 return SPELL_FAILED_DONT_REPORT;
 
 // first we must check to see if the target is in LoS. A path can usually be built but LoS matters for charge spells
 if (!IsWithinLOS(unitCaster, target, true, VMAP::ModelIgnoreFlags::Nothing)) //Do full LoS/Path check. Don't exclude m2
 return SPELL_FAILED_LINE_OF_SIGHT;
 
 float objSize = target->GetCombatReach();
 float range = m_spellInfo->GetMaxRange(true, unitCaster, this) * 1.5f + objSize; // can't be overly strict
 
 m_preGeneratedPath = std::make_unique<PathGenerator>(unitCaster);
 m_preGeneratedPath->SetPathLengthLimit(range);
 
 // first try with raycast, if it fails fall back to normal path
 bool result = m_preGeneratedPath->CalculatePath(target->GetPositionX(), target->GetPositionY(), target->GetPositionZ(), false);
 if (m_preGeneratedPath->GetPathType() & PATHFIND_SHORT)
 return SPELL_FAILED_NOPATH;
 else if (!result || m_preGeneratedPath->GetPathType() & (PATHFIND_NOPATH | PATHFIND_INCOMPLETE))
 return SPELL_FAILED_NOPATH;
 else if (m_preGeneratedPath->IsInvalidDestinationZ(target)) // Check position z, if not in a straight line
 return SPELL_FAILED_NOPATH;
 
 m_preGeneratedPath->ShortenPathUntilDist(PositionToVector3(target), objSize); // move back
 }
 break;
 }
 case SPELL_EFFECT_SKINNING:
 {
 if (m_caster->GetTypeId() != TYPEID_PLAYER || !m_targets.GetUnitTarget() || m_targets.GetUnitTarget()->GetTypeId() != TYPEID_UNIT)
 return SPELL_FAILED_BAD_TARGETS;
 
 if (!m_targets.GetUnitTarget()->HasUnitFlag(UNIT_FLAG_SKINNABLE))
 return SPELL_FAILED_TARGET_UNSKINNABLE;
 
 Creature* creature = m_targets.GetUnitTarget()->ToCreature();
 Loot* loot = creature->GetLootForPlayer(m_caster->ToPlayer());
 if (loot && (!loot->isLooted() || loot->loot_type == LOOT_SKINNING))
 return SPELL_FAILED_TARGET_NOT_LOOTED;
 
 break;
 }
 case SPELL_EFFECT_OPEN_LOCK:
 {
 if (spellEffectInfo.TargetA.GetTarget() != TARGET_GAMEOBJECT_TARGET &&
 spellEffectInfo.TargetA.GetTarget() != TARGET_GAMEOBJECT_ITEM_TARGET)
 break;
 
 if (m_caster->GetTypeId() != TYPEID_PLAYER // only players can open locks, gather etc.
 // we need a go target in case of TARGET_GAMEOBJECT_TARGET
 || (spellEffectInfo.TargetA.GetTarget() == TARGET_GAMEOBJECT_TARGET && !m_targets.GetGOTarget()))
 return SPELL_FAILED_BAD_TARGETS;
 
 Item* pTempItem = nullptr;
 if (m_targets.GetTargetMask() & TARGET_FLAG_TRADE_ITEM)
 {
 if (TradeData* pTrade = m_caster->ToPlayer()->GetTradeData())
 pTempItem = pTrade->GetTraderData()->GetItem(TRADE_SLOT_NONTRADED);
 }
 else if (m_targets.GetTargetMask() & TARGET_FLAG_ITEM)
 pTempItem = m_caster->ToPlayer()->GetItemByGuid(m_targets.GetItemTargetGUID());
 
 // we need a go target, or an openable item target in case of TARGET_GAMEOBJECT_ITEM_TARGET
 if (spellEffectInfo.TargetA.GetTarget() == TARGET_GAMEOBJECT_ITEM_TARGET &&
 !m_targets.GetGOTarget() &&
 (!pTempItem || !pTempItem->GetTemplate()->GetLockID() || !pTempItem->IsLocked()))
 return SPELL_FAILED_BAD_TARGETS;
 
 if (m_spellInfo->Id != 1842 || (m_targets.GetGOTarget() &&
 m_targets.GetGOTarget()->GetGOInfo()->type != GAMEOBJECT_TYPE_TRAP))
 if (m_caster->ToPlayer()->InBattleground() && // In Battleground players can use only flags and banners
 !m_caster->ToPlayer()->CanUseBattlegroundObject(m_targets.GetGOTarget()))
 return SPELL_FAILED_TRY_AGAIN;
 
 // get the lock entry
 uint32 lockId = 0;
 if (GameObject* go = m_targets.GetGOTarget())
 {
 lockId = go->GetGOInfo()->GetLockId();
 if (!lockId)
 return SPELL_FAILED_BAD_TARGETS;
 
 if (go->GetGOInfo()->GetNotInCombat() && m_caster->ToUnit()->IsInCombat())
 return SPELL_FAILED_AFFECTING_COMBAT;
 }
 else if (Item* itm = m_targets.GetItemTarget())
 lockId = itm->GetTemplate()->GetLockID();
 
 SkillType skillId = SKILL_NONE;
 int32 reqSkillValue = 0;
 int32 skillValue = 0;
 
 // check lock compatibility
 SpellCastResult res = CanOpenLock(spellEffectInfo, lockId, skillId, reqSkillValue, skillValue);
 if (res != SPELL_CAST_OK)
 return res;
 break;
 }
 case SPELL_EFFECT_RESURRECT_PET:
 {
 Player* playerCaster = m_caster->ToPlayer();
 if (!playerCaster || !playerCaster->GetPetStable())
 return SPELL_FAILED_BAD_TARGETS;
 
 Pet* pet = playerCaster->GetPet();
 if (pet && pet->IsAlive())
 return SPELL_FAILED_ALREADY_HAVE_SUMMON;
 
 PetStable const* petStable = playerCaster->GetPetStable();
 auto deadPetItr = std::find_if(petStable->ActivePets.begin(), petStable->ActivePets.end(), [](Optional<PetStable::PetInfo> const& petInfo)
 {
 return petInfo && !petInfo->Health;
 });
 
 if (deadPetItr == petStable->ActivePets.end())
 return SPELL_FAILED_BAD_TARGETS;
 
 break;
 }
 // This is generic summon effect
 case SPELL_EFFECT_SUMMON:
 {
 Unit* unitCaster = m_caster->ToUnit();
 if (!unitCaster)
 break;
 
 SummonPropertiesEntry const* SummonProperties = sSummonPropertiesStore.LookupEntry(spellEffectInfo.MiscValueB);
 if (!SummonProperties)
 break;
 
 switch (SummonProperties->Control)
 {
 case SUMMON_CATEGORY_PET:
 if (!m_spellInfo->HasAttribute(SPELL_ATTR1_DISMISS_PET_FIRST) && !unitCaster->GetPetGUID().IsEmpty())
 return SPELL_FAILED_ALREADY_HAVE_SUMMON;
 [[fallthrough]]; // check both GetPetGUID() and GetCharmGUID for SUMMON_CATEGORY_PET
 case SUMMON_CATEGORY_PUPPET:
 if (!unitCaster->GetCharmedGUID().IsEmpty())
 return SPELL_FAILED_ALREADY_HAVE_CHARM;
 break;
 }
 break;
 }
 case SPELL_EFFECT_CREATE_TAMED_PET:
 {
 if (m_targets.GetUnitTarget())
 {
 if (m_targets.GetUnitTarget()->GetTypeId() != TYPEID_PLAYER)
 return SPELL_FAILED_BAD_TARGETS;
 if (!m_spellInfo->HasAttribute(SPELL_ATTR1_DISMISS_PET_FIRST) && !m_targets.GetUnitTarget()->GetPetGUID().IsEmpty())
 return SPELL_FAILED_ALREADY_HAVE_SUMMON;
 }
 break;
 }
 case SPELL_EFFECT_SUMMON_PET:
 {
 Unit* unitCaster = m_caster->ToUnit();
 if (!unitCaster)
 return SPELL_FAILED_BAD_TARGETS;
 
 if (!unitCaster->GetPetGUID().IsEmpty()) //let warlock do a replacement summon
 {
 if (unitCaster->GetTypeId() == TYPEID_PLAYER)
 {
 if (strict) //starting cast, trigger pet stun (cast by pet so it doesn't attack player)
 if (Pet* pet = unitCaster->ToPlayer()->GetPet())
 pet->CastSpell(pet, PET_SUMMONING_DISORIENTATION, CastSpellExtraArgs(TRIGGERED_FULL_MASK)
 .SetOriginalCaster(pet->GetGUID())
 .SetTriggeringSpell(this));
 }
 else if (!m_spellInfo->HasAttribute(SPELL_ATTR1_DISMISS_PET_FIRST))
 return SPELL_FAILED_ALREADY_HAVE_SUMMON;
 }
 
 if (!unitCaster->GetCharmedGUID().IsEmpty())
 return SPELL_FAILED_ALREADY_HAVE_CHARM;
 
 Player* playerCaster = unitCaster->ToPlayer();
 if (playerCaster && playerCaster->GetPetStable())
 {
 Optional<PetSaveMode> petSlot;
 if (!spellEffectInfo.MiscValue)
 {
 petSlot = PetSaveMode(spellEffectInfo.CalcValue());
 
 // No pet can be summoned if any pet is dead
 for (Optional<PetStable::PetInfo> const& activePet : playerCaster->GetPetStable()->ActivePets)
 {
 if (activePet && !activePet->Health)
 {
 playerCaster->SendTameFailure(PetTameResult::Dead);
 return SPELL_FAILED_DONT_REPORT;
 }
 }
 }
 
 std::pair<PetStable::PetInfo const*, PetSaveMode> info = Pet::GetLoadPetInfo(*playerCaster->GetPetStable(), spellEffectInfo.MiscValue, 0, petSlot);
 if (info.first)
 {
 if (info.first->Type == HUNTER_PET)
 {
 CreatureTemplate const* creatureInfo = sObjectMgr->GetCreatureTemplate(info.first->CreatureId);
 CreatureDifficulty const* creatureDifficulty = creatureInfo->GetDifficulty(DIFFICULTY_NONE);
 if (!creatureInfo || !creatureInfo->IsTameable(playerCaster->CanTameExoticPets(), creatureDifficulty))
 {
 // if problem in exotic pet
 if (creatureInfo && creatureInfo->IsTameable(true, creatureDifficulty))
 playerCaster->SendTameFailure(PetTameResult::CantControlExotic);
 else
 playerCaster->SendTameFailure(PetTameResult::NoPetAvailable);
 
 return SPELL_FAILED_DONT_REPORT;
 }
 }
 }
 else if (!spellEffectInfo.MiscValue) // when miscvalue is present it is allowed to create new pets
 {
 playerCaster->SendTameFailure(PetTameResult::NoPetAvailable);
 return SPELL_FAILED_DONT_REPORT;
 }
 }
 
 break;
 }
 case SPELL_EFFECT_DISMISS_PET:
 {
 Player* playerCaster = m_caster->ToPlayer();
 if (!playerCaster)
 return SPELL_FAILED_BAD_TARGETS;
 
 Pet* pet = playerCaster->GetPet();
 if (!pet)
 return SPELL_FAILED_NO_PET;
 
 if (!pet->IsAlive())
 return SPELL_FAILED_TARGETS_DEAD;
 
 break;
 }
 case SPELL_EFFECT_SUMMON_PLAYER:
 {
 if (m_caster->GetTypeId() != TYPEID_PLAYER)
 return SPELL_FAILED_BAD_TARGETS;
 
 if (!m_caster->ToPlayer()->GetTarget())
 return SPELL_FAILED_BAD_TARGETS;
 
 Player* target = ObjectAccessor::FindPlayer(m_caster->ToPlayer()->GetTarget());
 if (!target || m_caster->ToPlayer() == target || (!target->IsInSameRaidWith(m_caster->ToPlayer()) && m_spellInfo->Id != 48955)) // refer-a-friend spell
 return SPELL_FAILED_BAD_TARGETS;
 
 if (target->HasSummonPending())
 return SPELL_FAILED_SUMMON_PENDING;
 
 // check if our map is dungeon
 if (InstanceMap const* map = m_caster->GetMap()->ToInstanceMap())
 {
 uint32 mapId = map->GetId();
 Difficulty difficulty = map->GetDifficultyID();
 if (InstanceLock const* mapLock = map->GetInstanceLock())
 if (sInstanceLockMgr.CanJoinInstanceLock(target->GetGUID(), { mapId, difficulty }, mapLock) != TRANSFER_ABORT_NONE)
 return SPELL_FAILED_TARGET_LOCKED_TO_RAID_INSTANCE;
 
 if (!target->Satisfy(sObjectMgr->GetAccessRequirement(mapId, difficulty), mapId))
 return SPELL_FAILED_BAD_TARGETS;
 }
 break;
 }
 // RETURN HERE
 case SPELL_EFFECT_SUMMON_RAF_FRIEND:
 {
 if (m_caster->GetTypeId() != TYPEID_PLAYER)
 return SPELL_FAILED_BAD_TARGETS;
 
 Player* playerCaster = m_caster->ToPlayer();
 if (!playerCaster->GetTarget())
 return SPELL_FAILED_BAD_TARGETS;
 
 Player* target = playerCaster->GetSelectedPlayer();
 if (!target ||
 !(target->GetSession()->GetRecruiterId() == playerCaster->GetSession()->GetAccountId() || target->GetSession()->GetAccountId() == playerCaster->GetSession()->GetRecruiterId()))
 return SPELL_FAILED_BAD_TARGETS;
 break;
 }
 case SPELL_EFFECT_LEAP:
 case SPELL_EFFECT_TELEPORT_UNITS_FACE_CASTER:
 {
 //Do not allow to cast it before BG starts.
 if (m_caster->GetTypeId() == TYPEID_PLAYER)
 if (Battleground const* bg = m_caster->ToPlayer()->GetBattleground())
 if (bg->GetStatus() != STATUS_IN_PROGRESS)
 return SPELL_FAILED_TRY_AGAIN;
 break;
 }
 case SPELL_EFFECT_STEAL_BENEFICIAL_BUFF:
 {
 if (!m_targets.GetUnitTarget() || m_targets.GetUnitTarget() == m_caster)
 return SPELL_FAILED_BAD_TARGETS;
 break;
 }
 case SPELL_EFFECT_LEAP_BACK:
 {
 Unit* unitCaster = m_caster->ToUnit();
 if (!unitCaster)
 return SPELL_FAILED_BAD_TARGETS;
 
 if (unitCaster->HasUnitState(UNIT_STATE_ROOT))
 {
 if (unitCaster->GetTypeId() == TYPEID_PLAYER)
 return SPELL_FAILED_ROOTED;
 else
 return SPELL_FAILED_DONT_REPORT;
 }
 break;
 }
 case SPELL_EFFECT_JUMP:
 case SPELL_EFFECT_JUMP_DEST:
 {
 Unit* unitCaster = m_caster->ToUnit();
 if (!unitCaster)
 return SPELL_FAILED_BAD_TARGETS;
 
 if (unitCaster->HasUnitState(UNIT_STATE_ROOT))
 return SPELL_FAILED_ROOTED;
 break;
 }
 case SPELL_EFFECT_TALENT_SPEC_SELECT:
 {
 ChrSpecializationEntry const* spec = sChrSpecializationStore.LookupEntry(m_misc.SpecializationId);
 Player* player = m_caster->ToPlayer();
 if (!player)
 return SPELL_FAILED_TARGET_NOT_PLAYER;
 
 if (!spec || (spec->ClassID != player->GetClass() && !spec->IsPetSpecialization()))
 return SPELL_FAILED_NO_SPEC;
 
 if (spec->IsPetSpecialization())
 {
 Pet* pet = player->GetPet();
 if (!pet || pet->getPetType() != HUNTER_PET || !pet->GetCharmInfo())
 return SPELL_FAILED_NO_PET;
 }
 
 // can't change during already started arena/battleground
 if (Battleground const* bg = player->GetBattleground())
 if (bg->GetStatus() == STATUS_IN_PROGRESS)
 return SPELL_FAILED_NOT_IN_BATTLEGROUND;
 break;
 }
 case SPELL_EFFECT_REMOVE_TALENT:
 {
 Player* playerCaster = m_caster->ToPlayer();
 if (!playerCaster)
 return SPELL_FAILED_BAD_TARGETS;
 
 TalentEntry const* talent = sTalentStore.LookupEntry(m_misc.TalentId);
 if (!talent)
 return SPELL_FAILED_DONT_REPORT;
 
 if (playerCaster->GetSpellHistory()->HasCooldown(talent->SpellID))
 {
 if (param1)
 *param1 = talent->SpellID;
 return SPELL_FAILED_CANT_UNTALENT;
 }
 break;
 }
 case SPELL_EFFECT_CREATE_HEIRLOOM_ITEM:
 {
 if (!m_caster->IsPlayer())
 return SPELL_FAILED_BAD_TARGETS;
 
 if (!m_caster->ToPlayer()->GetSession()->GetCollectionMgr()->HasHeirloom(m_misc.Raw.Data[0]))
 return SPELL_FAILED_BAD_TARGETS;
 
 break;
 }
 case SPELL_EFFECT_GIVE_ARTIFACT_POWER:
 case SPELL_EFFECT_GIVE_ARTIFACT_POWER_NO_BONUS:
 {
 Player* playerCaster = m_caster->ToPlayer();
 if (!playerCaster)
 return SPELL_FAILED_BAD_TARGETS;
 
 Aura* artifactAura = playerCaster->GetAura(ARTIFACTS_ALL_WEAPONS_GENERAL_WEAPON_EQUIPPED_PASSIVE);
 if (!artifactAura)
 return SPELL_FAILED_NO_ARTIFACT_EQUIPPED;
 
 Item* artifact = playerCaster->GetItemByGuid(artifactAura->GetCastItemGUID());
 if (!artifact)
 return SPELL_FAILED_NO_ARTIFACT_EQUIPPED;
 
 if (spellEffectInfo.Effect == SPELL_EFFECT_GIVE_ARTIFACT_POWER)
 {
 ArtifactEntry const* artifactEntry = sArtifactStore.LookupEntry(artifact->GetTemplate()->GetArtifactID());
 if (!artifactEntry || artifactEntry->ArtifactCategoryID != spellEffectInfo.MiscValue)
 return SPELL_FAILED_WRONG_ARTIFACT_EQUIPPED;
 }
 break;
 }
 case SPELL_EFFECT_CHANGE_BATTLEPET_QUALITY:
 case SPELL_EFFECT_GRANT_BATTLEPET_LEVEL:
 case SPELL_EFFECT_GRANT_BATTLEPET_EXPERIENCE:
 {
 Player* playerCaster = m_caster->ToPlayer();
 if (!playerCaster || !m_targets.GetUnitTarget() || !m_targets.GetUnitTarget()->IsCreature())
 return SPELL_FAILED_BAD_TARGETS;
 
 BattlePets::BattlePetMgr* battlePetMgr = playerCaster->GetSession()->GetBattlePetMgr();
 if (!battlePetMgr->HasJournalLock())
 return SPELL_FAILED_CANT_DO_THAT_RIGHT_NOW;
 
 if (Creature* creature = m_targets.GetUnitTarget()->ToCreature())
 {
 if (playerCaster->GetSummonedBattlePetGUID().IsEmpty() || creature->GetBattlePetCompanionGUID().IsEmpty())
 return SPELL_FAILED_NO_PET;
 
 if (playerCaster->GetSummonedBattlePetGUID() != creature->GetBattlePetCompanionGUID())
 return SPELL_FAILED_BAD_TARGETS;
 
 if (BattlePets::BattlePet* battlePet = battlePetMgr->GetPet(creature->GetBattlePetCompanionGUID()))
 {
 if (BattlePetSpeciesEntry const* battlePetSpecies = sBattlePetSpeciesStore.LookupEntry(battlePet->PacketInfo.Species))
 {
 if (uint32 battlePetType = spellEffectInfo.MiscValue)
 if (!(battlePetType & (1 << battlePetSpecies->PetTypeEnum)))
 return SPELL_FAILED_WRONG_BATTLE_PET_TYPE;
 
 if (spellEffectInfo.Effect == SPELL_EFFECT_CHANGE_BATTLEPET_QUALITY)
 {
 auto qualityItr = std::lower_bound(sBattlePetBreedQualityStore.begin(), sBattlePetBreedQualityStore.end(), spellEffectInfo.CalcBaseValue(m_caster, creature, m_castItemEntry, m_castItemLevel), [](BattlePetBreedQualityEntry const* a1, int32 selector)
 {
 return a1->MaxQualityRoll < selector;
 });
 
 BattlePets::BattlePetBreedQuality quality = BattlePets::BattlePetBreedQuality::Poor;
 if (qualityItr != sBattlePetBreedQualityStore.end())
 quality = BattlePets::BattlePetBreedQuality(qualityItr->QualityEnum);
 
 if (battlePet->PacketInfo.Quality >= AsUnderlyingType(quality))
 return SPELL_FAILED_CANT_UPGRADE_BATTLE_PET;
 }
 
 if (spellEffectInfo.Effect == SPELL_EFFECT_GRANT_BATTLEPET_LEVEL || spellEffectInfo.Effect == SPELL_EFFECT_GRANT_BATTLEPET_EXPERIENCE)
 if (battlePet->PacketInfo.Level >= BattlePets::MAX_BATTLE_PET_LEVEL)
 return GRANT_PET_LEVEL_FAIL;
 
 if (battlePetSpecies->GetFlags().HasFlag(BattlePetSpeciesFlags::CantBattle))
 return SPELL_FAILED_BAD_TARGETS;
 }
 }
 }
 break;
 }
 default:
 break;
 }
 
 if (spellEffectInfo.IsAura())
 approximateAuraEffectMask |= 1 << spellEffectInfo.EffectIndex;
 else if (spellEffectInfo.IsEffect())
 nonAuraEffectMask |= 1 << spellEffectInfo.EffectIndex;
 }
 
 for (SpellEffectInfo const& spellEffectInfo : m_spellInfo->GetEffects())
 {
 switch (spellEffectInfo.ApplyAuraName)
 {
 case SPELL_AURA_MOD_POSSESS_PET:
 {
 if (m_caster->GetTypeId() != TYPEID_PLAYER)
 return SPELL_FAILED_NO_PET;
 
 Pet* pet = m_caster->ToPlayer()->GetPet();
 if (!pet)
 return SPELL_FAILED_NO_PET;
 
 if (!pet->GetCharmerGUID().IsEmpty())
 return SPELL_FAILED_ALREADY_HAVE_CHARM;
 break;
 }
 case SPELL_AURA_MOD_POSSESS:
 case SPELL_AURA_MOD_CHARM:
 case SPELL_AURA_AOE_CHARM:
 {
 Unit* unitCaster = (m_originalCaster ? m_originalCaster : m_caster->ToUnit());
 if (!unitCaster)
 return SPELL_FAILED_BAD_TARGETS;
 
 if (!unitCaster->GetCharmerGUID().IsEmpty())
 return SPELL_FAILED_CHARMED;
 
 if (spellEffectInfo.ApplyAuraName == SPELL_AURA_MOD_CHARM
 || spellEffectInfo.ApplyAuraName == SPELL_AURA_MOD_POSSESS)
 {
 if (!m_spellInfo->HasAttribute(SPELL_ATTR1_DISMISS_PET_FIRST) && !unitCaster->GetPetGUID().IsEmpty())
 return SPELL_FAILED_ALREADY_HAVE_SUMMON;
 
 if (!unitCaster->GetCharmedGUID().IsEmpty())
 return SPELL_FAILED_ALREADY_HAVE_CHARM;
 }
 
 if (Unit* target = m_targets.GetUnitTarget())
 {
 if (target->GetTypeId() == TYPEID_UNIT && target->IsVehicle())
 return SPELL_FAILED_BAD_IMPLICIT_TARGETS;
 
 if (target->IsMounted())
 return SPELL_FAILED_CANT_BE_CHARMED;
 
 if (!target->GetCharmerGUID().IsEmpty())
 return SPELL_FAILED_ALREADY_HAVE_CHARM;
 
 if (target->GetOwner() && target->GetOwner()->GetTypeId() == TYPEID_PLAYER)
 return SPELL_FAILED_TARGET_IS_PLAYER_CONTROLLED;
 
 int32 value = CalculateDamage(spellEffectInfo, target);
 if (value && int32(target->GetLevelForTarget(m_caster)) > value)
 return SPELL_FAILED_HIGHLEVEL;
 }
 
 break;
 }
 case SPELL_AURA_MOUNTED:
 {
 Unit* unitCaster = m_caster->ToUnit();
 if (!unitCaster)
 return SPELL_FAILED_BAD_TARGETS;
 
 if (unitCaster->IsInWater() && m_spellInfo->HasAura(SPELL_AURA_MOD_INCREASE_MOUNTED_FLIGHT_SPEED))
 return SPELL_FAILED_ONLY_ABOVEWATER;
 
 if (unitCaster->IsInDisallowedMountForm())
 {
 SendMountResult(MountResult::Shapeshifted); // mount result gets sent before the cast result
 return SPELL_FAILED_DONT_REPORT;
 }
 break;
 }
 case SPELL_AURA_RANGED_ATTACK_POWER_ATTACKER_BONUS:
 {
 if (!m_targets.GetUnitTarget())
 return SPELL_FAILED_BAD_IMPLICIT_TARGETS;
 
 // can be cast at non-friendly unit or own pet/charm
 if (m_caster->IsFriendlyTo(m_targets.GetUnitTarget()))
 return SPELL_FAILED_TARGET_FRIENDLY;
 break;
 }
 case SPELL_AURA_FLY:
 case SPELL_AURA_MOD_INCREASE_MOUNTED_FLIGHT_SPEED:
 {
 // not allow cast fly spells if not have req. skills (all spells is self target)
 // allow always ghost flight spells
 if (m_originalCaster && m_originalCaster->GetTypeId() == TYPEID_PLAYER && m_originalCaster->IsAlive())
 {
 Battlefield* Bf = sBattlefieldMgr->GetBattlefieldToZoneId(m_originalCaster->GetMap(), m_originalCaster->GetZoneId());
 if (Bf && !Bf->CanFlyIn())
 return SPELL_FAILED_NOT_HERE;
 }
 break;
 }
 case SPELL_AURA_PERIODIC_MANA_LEECH:
 {
 if (spellEffectInfo.IsTargetingArea())
 break;
 
 if (!m_targets.GetUnitTarget())
 return SPELL_FAILED_BAD_IMPLICIT_TARGETS;
 
 if (m_caster->GetTypeId() != TYPEID_PLAYER || m_CastItem)
 break;
 
 if (m_targets.GetUnitTarget()->GetPowerType() != POWER_MANA)
 return SPELL_FAILED_BAD_TARGETS;
 break;
 }
 default:
 break;
 }
 
 // check if target already has the same type, but more powerful aura
 if (!m_spellInfo->HasAttribute(SPELL_ATTR4_AURA_NEVER_BOUNCES)
 && (!nonAuraEffectMask || m_spellInfo->HasAttribute(SPELL_ATTR4_AURA_BOUNCE_FAILS_SPELL))
 && (approximateAuraEffectMask & (1 << spellEffectInfo.EffectIndex))
 && !m_spellInfo->IsTargetingArea())
 if (Unit* target = m_targets.GetUnitTarget())
 if (!target->IsHighestExclusiveAuraEffect(m_spellInfo, spellEffectInfo.ApplyAuraName,
 spellEffectInfo.CalcValue(m_caster, &m_spellValue->EffectBasePoints[spellEffectInfo.EffectIndex], nullptr, nullptr, m_castItemEntry, m_castItemLevel),
 approximateAuraEffectMask, false))
 return SPELL_FAILED_AURA_BOUNCED;
 }
 
 // check trade slot case (last, for allow catch any another cast problems)
 if (m_targets.GetTargetMask() & TARGET_FLAG_TRADE_ITEM)
 {
 if (m_CastItem)
 return SPELL_FAILED_ITEM_ENCHANT_TRADE_WINDOW;
 
 if (m_spellInfo->HasAttribute(SPELL_ATTR2_ENCHANT_OWN_ITEM_ONLY))
 return SPELL_FAILED_ITEM_ENCHANT_TRADE_WINDOW;
 
 if (m_caster->GetTypeId() != TYPEID_PLAYER)
 return SPELL_FAILED_NOT_TRADING;
 
 TradeData* my_trade = m_caster->ToPlayer()->GetTradeData();
 if (!my_trade)
 return SPELL_FAILED_NOT_TRADING;
 
 if (m_targets.GetItemTargetGUID() != ObjectGuid::TradeItem)
 return SPELL_FAILED_BAD_TARGETS;
 
 if (!IsTriggered())
 if (my_trade->GetSpell())
 return SPELL_FAILED_ITEM_ALREADY_ENCHANTED;
 }
 
 // all ok
 return SPELL_CAST_OK;
}
 
SpellCastResult Spell::CheckPetCast(Unit* target)
{
 Unit* unitCaster = m_caster->ToUnit();
 if (unitCaster && unitCaster->HasUnitState(UNIT_STATE_CASTING) && !(_triggeredCastFlags & TRIGGERED_IGNORE_CAST_IN_PROGRESS)) //prevent spellcast interruption by another spellcast
 return SPELL_FAILED_SPELL_IN_PROGRESS;
 
 // dead owner (pets still alive when owners ressed?)
 if (Unit* owner = m_caster->GetCharmerOrOwner())
 if (!owner->IsAlive())
 return SPELL_FAILED_CASTER_DEAD;
 
 if (!target && m_targets.GetUnitTarget())
 target = m_targets.GetUnitTarget();
 
 if (m_spellInfo->NeedsExplicitUnitTarget())
 {
 if (!target)
 return SPELL_FAILED_BAD_IMPLICIT_TARGETS;
 m_targets.SetUnitTarget(target);
 }
 
 // check cooldown
 if (Creature* creatureCaster = m_caster->ToCreature())
 if (!creatureCaster->GetSpellHistory()->IsReady(m_spellInfo))
 return SPELL_FAILED_NOT_READY;
 
 // Check if spell is affected by GCD
 if (m_spellInfo->StartRecoveryCategory > 0)
 if (unitCaster && unitCaster->GetCharmInfo() && unitCaster->GetSpellHistory()->HasGlobalCooldown(m_spellInfo))
 return SPELL_FAILED_NOT_READY;
 
 return CheckCast(true);
}
 
SpellCastResult Spell::CheckCasterAuras(int32* param1) const
{
 Unit* unitCaster = (m_originalCaster ? m_originalCaster : m_caster->ToUnit());
 if (!unitCaster)
 return SPELL_CAST_OK;
 
 // these attributes only show the spell as usable on the client when it has related aura applied
 // still they need to be checked against certain mechanics
 
 // SPELL_ATTR5_USABLE_WHILE_STUNNED by default only MECHANIC_STUN (ie no sleep, knockout, freeze, etc.)
 bool usableWhileStunned = m_spellInfo->HasAttribute(SPELL_ATTR5_ALLOW_WHILE_STUNNED);
 
 // SPELL_ATTR5_USABLE_WHILE_FEARED by default only fear (ie no horror)
 bool usableWhileFeared = m_spellInfo->HasAttribute(SPELL_ATTR5_ALLOW_WHILE_FLEEING);
 
 // SPELL_ATTR5_USABLE_WHILE_CONFUSED by default only disorient (ie no polymorph)
 bool usableWhileConfused = m_spellInfo->HasAttribute(SPELL_ATTR5_ALLOW_WHILE_CONFUSED);
 
 // Check whether the cast should be prevented by any state you might have.
 SpellCastResult result = SPELL_CAST_OK;
 
 // Get unit state
 uint32 const unitflag = unitCaster->m_unitData->Flags;
 
 // this check should only be done when player does cast directly
 // (ie not when it's called from a script) Breaks for example PlayerAI when charmed
 /*
 if (!unitCaster->GetCharmerGUID().IsEmpty())
 {
 if (Unit* charmer = unitCaster->GetCharmer())
 if (charmer->GetUnitBeingMoved() != unitCaster && !CheckSpellCancelsCharm(param1))
 result = SPELL_FAILED_CHARMED;
 }
 */
 
 // spell has attribute usable while having a cc state, check if caster has allowed mechanic auras, another mechanic types must prevent cast spell
 auto mechanicCheck = [&](AuraType type) -> SpellCastResult
 {
 bool foundNotMechanic = false;
 Unit::AuraEffectList const& auras = unitCaster->GetAuraEffectsByType(type);
 for (AuraEffect const* aurEff : auras)
 {
 uint64 const mechanicMask = aurEff->GetSpellInfo()->GetAllEffectsMechanicMask();
 if (mechanicMask && !(mechanicMask & GetSpellInfo()->GetAllowedMechanicMask()))
 {
 foundNotMechanic = true;
 
 // fill up aura mechanic info to send client proper error message
 if (param1)
 {
 *param1 = aurEff->GetSpellEffectInfo().Mechanic;
 if (!*param1)
 *param1 = aurEff->GetSpellInfo()->Mechanic;
 }
 
 break;
 }
 }
 
 if (foundNotMechanic)
 {
 switch (type)
 {
 case SPELL_AURA_MOD_STUN:
 case SPELL_AURA_MOD_STUN_DISABLE_GRAVITY:
 return SPELL_FAILED_STUNNED;
 case SPELL_AURA_MOD_FEAR:
 return SPELL_FAILED_FLEEING;
 case SPELL_AURA_MOD_CONFUSE:
 return SPELL_FAILED_CONFUSED;
 default:
 ABORT();
 return SPELL_FAILED_NOT_KNOWN;
 }
 }
 
 return SPELL_CAST_OK;
 };
 
 if (unitflag & UNIT_FLAG_STUNNED)
 {
 if (usableWhileStunned)
 {
 SpellCastResult mechanicResult = mechanicCheck(SPELL_AURA_MOD_STUN);
 if (mechanicResult != SPELL_CAST_OK)
 result = mechanicResult;
 else
 {
 mechanicResult = mechanicCheck(SPELL_AURA_MOD_STUN_DISABLE_GRAVITY);
 if (mechanicResult != SPELL_CAST_OK)
 result = mechanicResult;
 }
 }
 else if (!CheckSpellCancelsStun(param1))
 result = SPELL_FAILED_STUNNED;
 else if ((m_spellInfo->Mechanic & MECHANIC_IMMUNE_SHIELD) && m_caster->ToUnit() && m_caster->ToUnit()->HasAuraWithMechanic(1 << MECHANIC_BANISH))
 result = SPELL_FAILED_STUNNED;
 }
 else if (unitCaster->IsSilenced(m_spellSchoolMask) && m_spellInfo->PreventionType & SPELL_PREVENTION_TYPE_SILENCE && !CheckSpellCancelsSilence(param1))
 result = SPELL_FAILED_SILENCED;
 else if (unitflag & UNIT_FLAG_PACIFIED && m_spellInfo->PreventionType & SPELL_PREVENTION_TYPE_PACIFY && !CheckSpellCancelsPacify(param1))
 result = SPELL_FAILED_PACIFIED;
 else if (unitflag & UNIT_FLAG_FLEEING)
 {
 if (usableWhileFeared)
 {
 SpellCastResult mechanicResult = mechanicCheck(SPELL_AURA_MOD_FEAR);
 if (mechanicResult != SPELL_CAST_OK)
 result = mechanicResult;
 }
 else if (!CheckSpellCancelsFear(param1))
 result = SPELL_FAILED_FLEEING;
 }
 else if (unitflag & UNIT_FLAG_CONFUSED)
 {
 if (usableWhileConfused)
 {
 SpellCastResult mechanicResult = mechanicCheck(SPELL_AURA_MOD_CONFUSE);
 if (mechanicResult != SPELL_CAST_OK)
 result = mechanicResult;
 }
 else if (!CheckSpellCancelsConfuse(param1))
 result = SPELL_FAILED_CONFUSED;
 }
 else if (unitCaster->HasUnitFlag2(UNIT_FLAG2_NO_ACTIONS) && m_spellInfo->PreventionType & SPELL_PREVENTION_TYPE_NO_ACTIONS && !CheckSpellCancelsNoActions(param1))
 result = SPELL_FAILED_NO_ACTIONS;
 
 // Attr must make flag drop spell totally immune from all effects
 if (result != SPELL_CAST_OK)
 return (param1 && *param1) ? SPELL_FAILED_PREVENTED_BY_MECHANIC : result;
 
 return SPELL_CAST_OK;
}
 
bool Spell::CheckSpellCancelsAuraEffect(AuraType auraType, int32* param1) const
{
 Unit* unitCaster = (m_originalCaster ? m_originalCaster : m_caster->ToUnit());
 if (!unitCaster)
 return false;
 
 // Checking auras is needed now, because you are prevented by some state but the spell grants immunity.
 Unit::AuraEffectList const& auraEffects = unitCaster->GetAuraEffectsByType(auraType);
 if (auraEffects.empty())
 return true;
 
 for (AuraEffect const* aurEff : auraEffects)
 {
 if (m_spellInfo->SpellCancelsAuraEffect(aurEff))
 continue;
 
 if (param1)
 {
 *param1 = aurEff->GetSpellEffectInfo().Mechanic;
 if (!*param1)
 *param1 = aurEff->GetSpellInfo()->Mechanic;
 }
 
 return false;
 }
 
 return true;
}
 
bool Spell::CheckSpellCancelsCharm(int32* param1) const
{
 return CheckSpellCancelsAuraEffect(SPELL_AURA_MOD_CHARM, param1) &&
 CheckSpellCancelsAuraEffect(SPELL_AURA_AOE_CHARM, param1) &&
 CheckSpellCancelsAuraEffect(SPELL_AURA_MOD_POSSESS, param1);
}
 
bool Spell::CheckSpellCancelsStun(int32* param1) const
{
 return CheckSpellCancelsAuraEffect(SPELL_AURA_MOD_STUN, param1) &&
 CheckSpellCancelsAuraEffect(SPELL_AURA_MOD_STUN_DISABLE_GRAVITY, param1);
}
 
bool Spell::CheckSpellCancelsSilence(int32* param1) const
{
 return CheckSpellCancelsAuraEffect(SPELL_AURA_MOD_SILENCE, param1) &&
 CheckSpellCancelsAuraEffect(SPELL_AURA_MOD_PACIFY_SILENCE, param1);
}
 
bool Spell::CheckSpellCancelsPacify(int32* param1) const
{
 return CheckSpellCancelsAuraEffect(SPELL_AURA_MOD_PACIFY, param1) &&
 CheckSpellCancelsAuraEffect(SPELL_AURA_MOD_PACIFY_SILENCE, param1);
}
 
bool Spell::CheckSpellCancelsFear(int32* param1) const
{
 return CheckSpellCancelsAuraEffect(SPELL_AURA_MOD_FEAR, param1);
}
 
bool Spell::CheckSpellCancelsConfuse(int32* param1) const
{
 return CheckSpellCancelsAuraEffect(SPELL_AURA_MOD_CONFUSE, param1);
}
 
bool Spell::CheckSpellCancelsNoActions(int32* param1) const
{
 return CheckSpellCancelsAuraEffect(SPELL_AURA_MOD_NO_ACTIONS, param1);
}
 
SpellCastResult Spell::CheckArenaAndRatedBattlegroundCastRules()
{
 bool isRatedBattleground = false; // NYI
 bool isArena = !isRatedBattleground;
 
 // check USABLE attributes
 // USABLE takes precedence over NOT_USABLE
 if (isRatedBattleground && m_spellInfo->HasAttribute(SPELL_ATTR9_USABLE_IN_RATED_BATTLEGROUNDS))
 return SPELL_CAST_OK;
 
 if (isArena && m_spellInfo->HasAttribute(SPELL_ATTR4_IGNORE_DEFAULT_ARENA_RESTRICTIONS))
 return SPELL_CAST_OK;
 
 // check NOT_USABLE attributes
 if (m_spellInfo->HasAttribute(SPELL_ATTR4_NOT_IN_ARENA_OR_RATED_BATTLEGROUND))
 return isArena ? SPELL_FAILED_NOT_IN_ARENA : SPELL_FAILED_NOT_IN_RATED_BATTLEGROUND;
 
 if (isArena && m_spellInfo->HasAttribute(SPELL_ATTR9_NOT_USABLE_IN_ARENA))
 return SPELL_FAILED_NOT_IN_ARENA;
 
 // check cooldowns
 uint32 spellCooldown = m_spellInfo->GetRecoveryTime();
 if (isArena && spellCooldown > 10 * MINUTE * IN_MILLISECONDS) // not sure if still needed
 return SPELL_FAILED_NOT_IN_ARENA;
 
 if (isRatedBattleground && spellCooldown > 15 * MINUTE * IN_MILLISECONDS)
 return SPELL_FAILED_NOT_IN_RATED_BATTLEGROUND;
 
 return SPELL_CAST_OK;
}
 
SpellCastResult Spell::CheckMovement() const
{
 if (IsTriggered())
 return SPELL_CAST_OK;
 
 // Creatures (not controlled) give priority to spell casting over movement.
 // We assume that the casting is always valid and the current movement
 // is stopped by Unit:IsmovementPreventedByCasting to prevent casting interruption.
 if (m_caster->IsCreature() && !m_caster->ToCreature()->IsControlledByPlayer())
 return SPELL_CAST_OK;
 
 if (Unit* unitCaster = m_caster->ToUnit())
 {
 if (!unitCaster->CanCastSpellWhileMoving(m_spellInfo))
 {
 if (getState() == SPELL_STATE_PREPARING)
 {
 if (m_casttime > 0)
 if (m_spellInfo->InterruptFlags.HasFlag(SpellInterruptFlags::Movement))
 return SPELL_FAILED_MOVING;
 }
 else if (getState() == SPELL_STATE_CASTING)
 if (!m_spellInfo->IsMoveAllowedChannel())
 return SPELL_FAILED_MOVING;
 }
 }
 
 return SPELL_CAST_OK;
}
 
int32 Spell::CalculateDamage(SpellEffectInfo const& spellEffectInfo, Unit const* target, float* var /*= nullptr*/) const
{
 bool needRecalculateBasePoints = !(m_spellValue->CustomBasePointsMask & (1 << spellEffectInfo.EffectIndex));
 return m_caster->CalculateSpellDamage(target, spellEffectInfo, needRecalculateBasePoints ? nullptr : &m_spellValue->EffectBasePoints[spellEffectInfo.EffectIndex], var, m_castItemEntry, m_castItemLevel);
}
 
bool Spell::CanAutoCast(Unit* target)
{
 if (!target)
 return (CheckPetCast(target) == SPELL_CAST_OK);
 
 ObjectGuid targetguid = target->GetGUID();
 
 // check if target already has the same or a more powerful aura
 for (SpellEffectInfo const& spellEffectInfo : m_spellInfo->GetEffects())
 {
 if (!spellEffectInfo.IsAura())
 continue;
 
 AuraType const& auraType = spellEffectInfo.ApplyAuraName;
 Unit::AuraEffectList const& auras = target->GetAuraEffectsByType(auraType);
 for (Unit::AuraEffectList::const_iterator auraIt = auras.begin(); auraIt != auras.end(); ++auraIt)
 {
 if (GetSpellInfo()->Id == (*auraIt)->GetSpellInfo()->Id)
 return false;
 
 switch (sSpellMgr->CheckSpellGroupStackRules(GetSpellInfo(), (*auraIt)->GetSpellInfo()))
 {
 case SPELL_GROUP_STACK_RULE_EXCLUSIVE:
 return false;
 case SPELL_GROUP_STACK_RULE_EXCLUSIVE_FROM_SAME_CASTER:
 if (GetCaster() == (*auraIt)->GetCaster())
 return false;
 break;
 case SPELL_GROUP_STACK_RULE_EXCLUSIVE_SAME_EFFECT: // this one has further checks, but i don't think they're necessary for autocast logic
 case SPELL_GROUP_STACK_RULE_EXCLUSIVE_HIGHEST:
 if (abs(spellEffectInfo.CalcBaseValue(m_caster, target, 0, -1)) <= abs((*auraIt)->GetAmount()))
 return false;
 break;
 case SPELL_GROUP_STACK_RULE_DEFAULT:
 default:
 break;
 }
 }
 }
 
 SpellCastResult result = CheckPetCast(target);
 if (result == SPELL_CAST_OK || result == SPELL_FAILED_UNIT_NOT_INFRONT)
 {
 // do not check targets for ground-targeted spells (we target them on top of the intended target anyway)
 if (GetSpellInfo()->ExplicitTargetMask & TARGET_FLAG_DEST_LOCATION)
 return true;
 SelectSpellTargets();
 //check if among target units, our WANTED target is as well (->only self cast spells return false)
 for (auto ihit = m_UniqueTargetInfo.begin(); ihit != m_UniqueTargetInfo.end(); ++ihit)
 if (ihit->TargetGUID == targetguid)
 return true;
 }
 // either the cast failed or the intended target wouldn't be hit
 return false;
}
 
void Spell::CheckSrc()
{
 if (!m_targets.HasSrc())
 m_targets.SetSrc(*m_caster);
}
 
void Spell::CheckDst()
{
 if (!m_targets.HasDst())
 m_targets.SetDst(*m_caster);
}
 
SpellCastResult Spell::CheckRange(bool strict) const
{
 // Don't check for instant cast spells
 if (!strict && m_casttime == 0)
 return SPELL_CAST_OK;
 
 auto [minRange, maxRange] = GetMinMaxRange(strict);
 
 // dont check max_range to strictly after cast
 if (m_spellInfo->RangeEntry && m_spellInfo->RangeEntry->Flags != SPELL_RANGE_MELEE && !strict)
 maxRange += std::min(MAX_SPELL_RANGE_TOLERANCE, maxRange*0.1f); // 10% but no more than MAX_SPELL_RANGE_TOLERANCE
 
 // get square values for sqr distance checks
 minRange *= minRange;
 maxRange *= maxRange;
 
 Unit* target = m_targets.GetUnitTarget();
 if (target && target != m_caster)
 {
 if (m_caster->GetExactDistSq(target) > maxRange)
 return SPELL_FAILED_OUT_OF_RANGE;
 
 if (minRange > 0.0f && m_caster->GetExactDistSq(target) < minRange)
 return SPELL_FAILED_OUT_OF_RANGE;
 
 if (m_caster->GetTypeId() == TYPEID_PLAYER &&
 (((m_spellInfo->FacingCasterFlags & SPELL_FACING_FLAG_INFRONT) && !m_caster->HasInArc(static_cast<float>(M_PI), target))
 && !m_caster->ToPlayer()->IsWithinBoundaryRadius(target)))
 return SPELL_FAILED_UNIT_NOT_INFRONT;
 }
 
 if (GameObject* goTarget = m_targets.GetGOTarget())
 {
 if (!goTarget->IsAtInteractDistance(m_caster->ToPlayer(), m_spellInfo))
 return SPELL_FAILED_OUT_OF_RANGE;
 }
 
 if (m_targets.HasDst() && !m_targets.HasTraj())
 {
 if (m_caster->GetExactDistSq(m_targets.GetDstPos()) > maxRange)
 return SPELL_FAILED_OUT_OF_RANGE;
 if (minRange > 0.0f && m_caster->GetExactDistSq(m_targets.GetDstPos()) < minRange)
 return SPELL_FAILED_OUT_OF_RANGE;
 }
 
 return SPELL_CAST_OK;
}
 
std::pair<float, float> Spell::GetMinMaxRange(bool strict) const
{
 float rangeMod = 0.0f;
 float minRange = 0.0f;
 float maxRange = 0.0f;
 
 if (strict && m_spellInfo->IsNextMeleeSwingSpell())
 return { 0.0f, 100.0f };
 
 Unit* unitCaster = m_caster->ToUnit();
 if (m_spellInfo->RangeEntry)
 {
 Unit* target = m_targets.GetUnitTarget();
 if (m_spellInfo->RangeEntry->Flags & SPELL_RANGE_MELEE)
 {
 // when the target is not a unit, take the caster's combat reach as the target's combat reach.
 if (unitCaster)
 rangeMod = unitCaster->GetMeleeRange(target ? target : unitCaster);
 }
 else
 {
 float meleeRange = 0.0f;
 if (m_spellInfo->RangeEntry->Flags & SPELL_RANGE_RANGED)
 {
 // when the target is not a unit, take the caster's combat reach as the target's combat reach.
 if (unitCaster)
 meleeRange = unitCaster->GetMeleeRange(target ? target : unitCaster);
 }
 
 minRange = m_caster->GetSpellMinRangeForTarget(target, m_spellInfo) + meleeRange;
 maxRange = m_caster->GetSpellMaxRangeForTarget(target, m_spellInfo);
 
 if (target || m_targets.GetCorpseTarget())
 {
 rangeMod = m_caster->GetCombatReach() + (target ? target->GetCombatReach() : m_caster->GetCombatReach());
 
 if (minRange > 0.0f && !(m_spellInfo->RangeEntry->Flags & SPELL_RANGE_RANGED))
 minRange += rangeMod;
 }
 }
 
 if (target && unitCaster && unitCaster->isMoving() && target->isMoving() && !unitCaster->IsWalking() && !target->IsWalking() &&
 ((m_spellInfo->RangeEntry->Flags & SPELL_RANGE_MELEE) || target->GetTypeId() == TYPEID_PLAYER))
 rangeMod += 8.0f / 3.0f;
 }
 
 if (m_spellInfo->HasAttribute(SPELL_ATTR0_USES_RANGED_SLOT) && m_caster->GetTypeId() == TYPEID_PLAYER)
 if (Item* ranged = m_caster->ToPlayer()->GetWeaponForAttack(RANGED_ATTACK, true))
 maxRange *= ranged->GetTemplate()->GetRangedModRange() * 0.01f;
 
 if (Player* modOwner = m_caster->GetSpellModOwner())
 modOwner->ApplySpellMod(m_spellInfo, SpellModOp::Range, maxRange, const_cast<Spell*>(this));
 
 maxRange += rangeMod;
 
 return { minRange, maxRange };
}
 
SpellCastResult Spell::CheckPower() const
{
 Unit* unitCaster = m_caster->ToUnit();
 if (!unitCaster)
 return SPELL_CAST_OK;
 
 // item cast not used power
 if (m_CastItem)
 return SPELL_CAST_OK;
 
 for (SpellPowerCost const& cost : m_powerCost)
 {
 // health as power used - need check health amount
 if (cost.Power == POWER_HEALTH)
 {
 if (int64(unitCaster->GetHealth()) <= cost.Amount)
 return SPELL_FAILED_CASTER_AURASTATE;
 continue;
 }
 // Check valid power type
 if (cost.Power >= MAX_POWERS)
 {
 TC_LOG_ERROR("spells", "Spell::CheckPower: Unknown power type '{}'", cost.Power);
 return SPELL_FAILED_UNKNOWN;
 }
 
 //check rune cost only if a spell has PowerType == POWER_RUNES
 if (cost.Power == POWER_RUNES)
 {
 SpellCastResult failReason = CheckRuneCost();
 if (failReason != SPELL_CAST_OK)
 return failReason;
 }
 
 // Check power amount
 if (int32(unitCaster->GetPower(cost.Power)) < cost.Amount)
 return SPELL_FAILED_NO_POWER;
 }
 
 return SPELL_CAST_OK;
}
 
SpellCastResult Spell::CheckItems(int32* param1 /*= nullptr*/, int32* param2 /*= nullptr*/) const
{
 Player* player = m_caster->ToPlayer();
 if (!player)
 return SPELL_CAST_OK;
 
 if (!m_CastItem)
 {
 if (!m_castItemGUID.IsEmpty())
 return SPELL_FAILED_ITEM_NOT_READY;
 }
 else
 {
 uint32 itemid = m_CastItem->GetEntry();
 if (!player->HasItemCount(itemid))
 return SPELL_FAILED_ITEM_NOT_READY;
 
 ItemTemplate const* proto = m_CastItem->GetTemplate();
 if (!proto)
 return SPELL_FAILED_ITEM_NOT_READY;
 
 for (ItemEffectEntry const* itemEffect : m_CastItem->GetEffects())
 if (itemEffect->LegacySlotIndex < m_CastItem->m_itemData->SpellCharges.size() && itemEffect->Charges)
 if (m_CastItem->GetSpellCharges(itemEffect->LegacySlotIndex) == 0)
 return SPELL_FAILED_NO_CHARGES_REMAIN;
 
 // consumable cast item checks
 if (proto->GetClass() == ITEM_CLASS_CONSUMABLE && m_targets.GetUnitTarget())
 {
 // such items should only fail if there is no suitable effect at all - see Rejuvenation Potions for example
 SpellCastResult failReason = SPELL_CAST_OK;
 for (SpellEffectInfo const& spellEffectInfo : m_spellInfo->GetEffects())
 {
 // skip check, pet not required like checks, and for TARGET_UNIT_PET m_targets.GetUnitTarget() is not the real target but the caster
 if (spellEffectInfo.TargetA.GetTarget() == TARGET_UNIT_PET)
 continue;
 
 if (spellEffectInfo.IsEffect(SPELL_EFFECT_HEAL))
 {
 if (m_targets.GetUnitTarget()->IsFullHealth())
 {
 failReason = SPELL_FAILED_ALREADY_AT_FULL_HEALTH;
 continue;
 }
 else
 {
 failReason = SPELL_CAST_OK;
 break;
 }
 }
 
 // Mana Potion, Rage Potion, Thistle Tea(Rogue), ...
 if (spellEffectInfo.IsEffect(SPELL_EFFECT_ENERGIZE))
 {
 if (spellEffectInfo.MiscValue < 0 || spellEffectInfo.MiscValue >= int8(MAX_POWERS))
 {
 failReason = SPELL_FAILED_ALREADY_AT_FULL_POWER;
 continue;
 }
 
 Powers power = Powers(spellEffectInfo.MiscValue);
 if (m_targets.GetUnitTarget()->GetPower(power) == m_targets.GetUnitTarget()->GetMaxPower(power))
 {
 failReason = SPELL_FAILED_ALREADY_AT_FULL_POWER;
 continue;
 }
 else
 {
 failReason = SPELL_CAST_OK;
 break;
 }
 }
 }
 if (failReason != SPELL_CAST_OK)
 return failReason;
 }
 }
 
 // check target item
 if (!m_targets.GetItemTargetGUID().IsEmpty())
 {
 Item* item = m_targets.GetItemTarget();
 if (!item)
 return SPELL_FAILED_ITEM_GONE;
 
 if (!item->IsFitToSpellRequirements(m_spellInfo))
 return SPELL_FAILED_EQUIPPED_ITEM_CLASS;
 }
 // if not item target then required item must be equipped
 else
 {
 if (!(_triggeredCastFlags & TRIGGERED_IGNORE_EQUIPPED_ITEM_REQUIREMENT))
 if (!player->HasItemFitToSpellRequirements(m_spellInfo))
 return SPELL_FAILED_EQUIPPED_ITEM_CLASS;
 }
 
 // do not take reagents for these item casts
 if (!(m_CastItem && m_CastItem->GetTemplate()->HasFlag(ITEM_FLAG_NO_REAGENT_COST)))
 {
 bool checkReagents = !(_triggeredCastFlags & TRIGGERED_IGNORE_POWER_AND_REAGENT_COST) && !player->CanNoReagentCast(m_spellInfo);
 // Not own traded item (in trader trade slot) requires reagents even if triggered spell
 if (!checkReagents)
 if (Item* targetItem = m_targets.GetItemTarget())
 if (targetItem->GetOwnerGUID() != player->GetGUID())
 checkReagents = true;
 
 // check reagents (ignore triggered spells with reagents processed by original spell) and special reagent ignore case.
 if (checkReagents)
 {
 for (uint32 i = 0; i < MAX_SPELL_REAGENTS; i++)
 {
 if (m_spellInfo->Reagent[i] <= 0)
 continue;
 
 uint32 itemid = m_spellInfo->Reagent[i];
 uint32 itemcount = m_spellInfo->ReagentCount[i];
 
 // if CastItem is also spell reagent
 if (m_CastItem && m_CastItem->GetEntry() == itemid)
 {
 ItemTemplate const* proto = m_CastItem->GetTemplate();
 if (!proto)
 return SPELL_FAILED_ITEM_NOT_READY;
 
 for (ItemEffectEntry const* itemEffect : m_CastItem->GetEffects())
 {
 if (itemEffect->LegacySlotIndex >= m_CastItem->m_itemData->SpellCharges.size())
 continue;
 
 // CastItem will be used up and does not count as reagent
 int32 charges = m_CastItem->GetSpellCharges(itemEffect->LegacySlotIndex);
 if (itemEffect->Charges < 0 && abs(charges) < 2)
 {
 ++itemcount;
 break;
 }
 }
 }
 if (!player->HasItemCount(itemid, itemcount))
 {
 if (param1)
 *param1 = itemid;
 return SPELL_FAILED_REAGENTS;
 }
 }
 
 for (SpellReagentsCurrencyEntry const* reagentsCurrency : m_spellInfo->ReagentsCurrency)
 {
 if (!player->HasCurrency(reagentsCurrency->CurrencyTypesID, reagentsCurrency->CurrencyCount))
 {
 if (param1)
 *param1 = -1;
 
 if (param2)
 *param2 = reagentsCurrency->CurrencyTypesID;
 
 return SPELL_FAILED_REAGENTS;
 }
 }
 }
 
 // check totem-item requirements (items presence in inventory)
 uint32 totems = 2;
 for (uint8 i = 0; i < 2; ++i)
 {
 if (m_spellInfo->Totem[i] != 0)
 {
 if (player->HasItemCount(m_spellInfo->Totem[i]))
 {
 totems -= 1;
 continue;
 }
 }
 else
 totems -= 1;
 }
 
 if (totems != 0)
 return SPELL_FAILED_TOTEMS;
 
 // Check items for TotemCategory (items presence in inventory)
 uint32 totemCategory = 2;
 for (uint8 i = 0; i < 2; ++i)
 {
 if (m_spellInfo->TotemCategory[i] != 0)
 {
 if (player->HasItemTotemCategory(m_spellInfo->TotemCategory[i]))
 {
 totemCategory -= 1;
 continue;
 }
 }
 else
 totemCategory -= 1;
 }
 
 if (totemCategory != 0)
 return SPELL_FAILED_TOTEM_CATEGORY;
 }
 
 // special checks for spell effects
 for (SpellEffectInfo const& spellEffectInfo : m_spellInfo->GetEffects())
 {
 switch (spellEffectInfo.Effect)
 {
 case SPELL_EFFECT_CREATE_ITEM:
 case SPELL_EFFECT_CREATE_LOOT:
 {
 // m_targets.GetUnitTarget() means explicit cast, otherwise we dont check for possible equip error
 Unit* target = m_targets.GetUnitTarget() ? m_targets.GetUnitTarget() : player;
 if (target->GetTypeId() == TYPEID_PLAYER && !IsTriggered())
 {
 // SPELL_EFFECT_CREATE_ITEM_2 differs from SPELL_EFFECT_CREATE_ITEM in that it picks the random item to create from a pool of potential items,
 // so we need to make sure there is at least one free space in the player's inventory
 if (spellEffectInfo.Effect == SPELL_EFFECT_CREATE_LOOT)
 if (target->ToPlayer()->GetFreeInventorySpace() == 0)
 {
 player->SendEquipError(EQUIP_ERR_INV_FULL, nullptr, nullptr, spellEffectInfo.ItemType);
 return SPELL_FAILED_DONT_REPORT;
 }
 
 if (spellEffectInfo.ItemType)
 {
 ItemTemplate const* itemTemplate = sObjectMgr->GetItemTemplate(spellEffectInfo.ItemType);
 if (!itemTemplate)
 return SPELL_FAILED_ITEM_NOT_FOUND;
 
 uint32 createCount = std::clamp<uint32>(spellEffectInfo.CalcValue(), 1u, itemTemplate->GetMaxStackSize());
 ItemPosCountVec dest;
 InventoryResult msg = target->ToPlayer()->CanStoreNewItem(NULL_BAG, NULL_SLOT, dest, spellEffectInfo.ItemType, createCount);
 if (msg != EQUIP_ERR_OK)
 {
 if (!itemTemplate->GetItemLimitCategory())
 {
 player->SendEquipError(msg, nullptr, nullptr, spellEffectInfo.ItemType);
 return SPELL_FAILED_DONT_REPORT;
 }
 else
 {
 // Conjure Food/Water/Refreshment spells
 if (m_spellInfo->SpellFamilyName != SPELLFAMILY_MAGE || (!(m_spellInfo->SpellFamilyFlags[0] & 0x40000000)))
 return SPELL_FAILED_TOO_MANY_OF_ITEM;
 else if (!(target->ToPlayer()->HasItemCount(spellEffectInfo.ItemType)))
 {
 player->SendEquipError(msg, nullptr, nullptr, spellEffectInfo.ItemType);
 return SPELL_FAILED_DONT_REPORT;
 }
 else if (m_spellInfo->GetEffects().size() > EFFECT_1)
 player->CastSpell(player, m_spellInfo->GetEffect(EFFECT_1).CalcValue(), CastSpellExtraArgs()
 .SetTriggeringSpell(this)); // move this to anywhere
 return SPELL_FAILED_DONT_REPORT;
 }
 }
 }
 }
 break;
 }
 case SPELL_EFFECT_ENCHANT_ITEM:
 if (spellEffectInfo.ItemType && m_targets.GetItemTarget()
 && (m_targets.GetItemTarget()->IsVellum()))
 {
 // cannot enchant vellum for other player
 if (m_targets.GetItemTarget()->GetOwner() != player)
 return SPELL_FAILED_NOT_TRADEABLE;
 // do not allow to enchant vellum from scroll made by vellum-prevent exploit
 if (m_CastItem && m_CastItem->GetTemplate()->HasFlag(ITEM_FLAG_NO_REAGENT_COST))
 return SPELL_FAILED_TOTEM_CATEGORY;
 ItemPosCountVec dest;
 InventoryResult msg = player->CanStoreNewItem(NULL_BAG, NULL_SLOT, dest, spellEffectInfo.ItemType, 1);
 if (msg != EQUIP_ERR_OK)
 {
 player->SendEquipError(msg, nullptr, nullptr, spellEffectInfo.ItemType);
 return SPELL_FAILED_DONT_REPORT;
 }
 }
 [[fallthrough]];
 case SPELL_EFFECT_ENCHANT_ITEM_PRISMATIC:
 {
 Item* targetItem = m_targets.GetItemTarget();
 if (!targetItem)
 return SPELL_FAILED_ITEM_NOT_FOUND;
 
 // required level has to be checked also! Exploit fix
 if (targetItem->GetItemLevel(targetItem->GetOwner()) < m_spellInfo->BaseLevel || (targetItem->GetRequiredLevel() && uint32(targetItem->GetRequiredLevel()) < m_spellInfo->BaseLevel))
 return SPELL_FAILED_LOWLEVEL;
 
 bool isItemUsable = false;
 for (ItemEffectEntry const* itemEffect : targetItem->GetEffects())
 {
 if (itemEffect->SpellID && itemEffect->TriggerType == ITEM_SPELLTRIGGER_ON_USE)
 {
 isItemUsable = true;
 break;
 }
 }
 
 SpellItemEnchantmentEntry const* enchantEntry = sSpellItemEnchantmentStore.LookupEntry(spellEffectInfo.MiscValue);
 // do not allow adding usable enchantments to items that have use effect already
 if (enchantEntry)
 {
 for (uint8 s = 0; s < MAX_ITEM_ENCHANTMENT_EFFECTS; ++s)
 {
 switch (enchantEntry->Effect[s])
 {
 case ITEM_ENCHANTMENT_TYPE_USE_SPELL:
 if (isItemUsable)
 return SPELL_FAILED_ON_USE_ENCHANT;
 break;
 case ITEM_ENCHANTMENT_TYPE_PRISMATIC_SOCKET:
 {
 uint32 numSockets = 0;
 for (uint32 socket = 0; socket < MAX_ITEM_PROTO_SOCKETS; ++socket)
 if (targetItem->GetSocketColor(socket))
 ++numSockets;
 
 if (numSockets == MAX_ITEM_PROTO_SOCKETS || targetItem->GetEnchantmentId(PRISMATIC_ENCHANTMENT_SLOT))
 return SPELL_FAILED_MAX_SOCKETS;
 break;
 }
 }
 }
 }
 
 // Not allow enchant in trade slot for some enchant type
 if (targetItem->GetOwner() != player)
 {
 if (!enchantEntry)
 return SPELL_FAILED_ERROR;
 if (enchantEntry->GetFlags().HasFlag(SpellItemEnchantmentFlags::Soulbound))
 return SPELL_FAILED_NOT_TRADEABLE;
 }
 break;
 }
 case SPELL_EFFECT_ENCHANT_ITEM_TEMPORARY:
 {
 Item* item = m_targets.GetItemTarget();
 if (!item)
 return SPELL_FAILED_ITEM_NOT_FOUND;
 // Not allow enchant in trade slot for some enchant type
 if (item->GetOwner() != player)
 {
 uint32 enchant_id = spellEffectInfo.MiscValue;
 SpellItemEnchantmentEntry const* enchantEntry = sSpellItemEnchantmentStore.LookupEntry(enchant_id);
 if (!enchantEntry)
 return SPELL_FAILED_ERROR;
 if (enchantEntry->GetFlags().HasFlag(SpellItemEnchantmentFlags::Soulbound))
 return SPELL_FAILED_NOT_TRADEABLE;
 }
 
 // Apply item level restriction if the enchanting spell has max level restrition set
 if (m_CastItem && m_spellInfo->MaxLevel > 0)
 {
 if (item->GetTemplate()->GetBaseItemLevel() < (uint32)m_CastItem->GetTemplate()->GetBaseRequiredLevel())
 return SPELL_FAILED_LOWLEVEL;
 if (item->GetTemplate()->GetBaseItemLevel() > m_spellInfo->MaxLevel)
 return SPELL_FAILED_HIGHLEVEL;
 }
 break;
 }
 case SPELL_EFFECT_ENCHANT_HELD_ITEM:
 // check item existence in effect code (not output errors at offhand hold item effect to main hand for example
 break;
 case SPELL_EFFECT_DISENCHANT:
 {
 Item const* item = m_targets.GetItemTarget();
 if (!item)
 return SPELL_FAILED_CANT_BE_SALVAGED;
 
 // prevent disenchanting in trade slot
 if (item->GetOwnerGUID() != player->GetGUID())
 return SPELL_FAILED_CANT_BE_SALVAGED;
 
 ItemTemplate const* itemProto = item->GetTemplate();
 if (!itemProto)
 return SPELL_FAILED_CANT_BE_SALVAGED;
 
 ItemDisenchantLootEntry const* itemDisenchantLoot = item->GetDisenchantLoot(m_caster->ToPlayer());
 if (!itemDisenchantLoot)
 return SPELL_FAILED_CANT_BE_SALVAGED;
 if (itemDisenchantLoot->SkillRequired > player->GetSkillValue(SKILL_ENCHANTING))
 return SPELL_FAILED_CANT_BE_SALVAGED_SKILL;
 break;
 }
 case SPELL_EFFECT_PROSPECTING:
 {
 Item* item = m_targets.GetItemTarget();
 if (!item)
 return SPELL_FAILED_CANT_BE_PROSPECTED;
 //ensure item is a prospectable ore
 if (!item->GetTemplate()->HasFlag(ITEM_FLAG_IS_PROSPECTABLE))
 return SPELL_FAILED_CANT_BE_PROSPECTED;
 //prevent prospecting in trade slot
 if (item->GetOwnerGUID() != player->GetGUID())
 return SPELL_FAILED_CANT_BE_PROSPECTED;
 //Check for enough skill in jewelcrafting
 uint32 item_prospectingskilllevel = item->GetTemplate()->GetRequiredSkillRank();
 if (item_prospectingskilllevel > player->GetSkillValue(SKILL_JEWELCRAFTING))
 return SPELL_FAILED_LOW_CASTLEVEL;
 //make sure the player has the required ores in inventory
 if (item->GetCount() < 5)
 {
 if (param1 && param2)
 {
 *param1 = item->GetEntry();
 *param2 = 5;
 }
 return SPELL_FAILED_NEED_MORE_ITEMS;
 }
 
 if (!LootTemplates_Prospecting.HaveLootFor(m_targets.GetItemTargetEntry()))
 return SPELL_FAILED_CANT_BE_PROSPECTED;
 
 break;
 }
 case SPELL_EFFECT_MILLING:
 {
 Item* item = m_targets.GetItemTarget();
 if (!item)
 return SPELL_FAILED_CANT_BE_MILLED;
 //ensure item is a millable herb
 if (!item->GetTemplate()->HasFlag(ITEM_FLAG_IS_MILLABLE))
 return SPELL_FAILED_CANT_BE_MILLED;
 //prevent milling in trade slot
 if (item->GetOwnerGUID() != player->GetGUID())
 return SPELL_FAILED_CANT_BE_MILLED;
 //Check for enough skill in inscription
 uint32 item_millingskilllevel = item->GetTemplate()->GetRequiredSkillRank();
 if (item_millingskilllevel > player->GetSkillValue(SKILL_INSCRIPTION))
 return SPELL_FAILED_LOW_CASTLEVEL;
 //make sure the player has the required herbs in inventory
 if (item->GetCount() < 5)
 {
 if (param1 && param2)
 {
 *param1 = item->GetEntry();
 *param2 = 5;
 }
 return SPELL_FAILED_NEED_MORE_ITEMS;
 }
 
 if (!LootTemplates_Milling.HaveLootFor(m_targets.GetItemTargetEntry()))
 return SPELL_FAILED_CANT_BE_MILLED;
 
 break;
 }
 case SPELL_EFFECT_WEAPON_DAMAGE:
 case SPELL_EFFECT_WEAPON_DAMAGE_NOSCHOOL:
 {
 if (m_attackType != RANGED_ATTACK)
 break;
 
 Item* item = player->GetWeaponForAttack(m_attackType);
 if (!item || item->IsBroken())
 return SPELL_FAILED_EQUIPPED_ITEM;
 
 switch (item->GetTemplate()->GetSubClass())
 {
 case ITEM_SUBCLASS_WEAPON_THROWN:
 {
 uint32 const ammo = item->GetEntry();
 if (!player->HasItemCount(ammo))
 return SPELL_FAILED_NO_AMMO;
 break;
 }
 case ITEM_SUBCLASS_WEAPON_GUN:
 case ITEM_SUBCLASS_WEAPON_BOW:
 case ITEM_SUBCLASS_WEAPON_CROSSBOW:
 case ITEM_SUBCLASS_WEAPON_WAND:
 break;
 default:
 break;
 }
 break;
 }
 case SPELL_EFFECT_RECHARGE_ITEM:
 {
 uint32 itemId = spellEffectInfo.ItemType;
 
 ItemTemplate const* proto = sObjectMgr->GetItemTemplate(itemId);
 if (!proto)
 return SPELL_FAILED_ITEM_AT_MAX_CHARGES;
 
 if (Item* item = player->GetItemByEntry(itemId))
 for (ItemEffectEntry const* itemEffect : item->GetEffects())
 if (itemEffect->LegacySlotIndex <= item->m_itemData->SpellCharges.size()
 && itemEffect->Charges != 0
 && item->GetSpellCharges(itemEffect->LegacySlotIndex) == itemEffect->Charges)
 return SPELL_FAILED_ITEM_AT_MAX_CHARGES;
 break;
 }
 case SPELL_EFFECT_RESPEC_AZERITE_EMPOWERED_ITEM:
 {
 Item const* item = m_targets.GetItemTarget();
 if (!item)
 return SPELL_FAILED_AZERITE_EMPOWERED_ONLY;
 
 if (item->GetOwnerGUID() != m_caster->GetGUID())
 return SPELL_FAILED_DONT_REPORT;
 
 AzeriteEmpoweredItem const* azeriteEmpoweredItem = item->ToAzeriteEmpoweredItem();
 if (!azeriteEmpoweredItem)
 return SPELL_FAILED_AZERITE_EMPOWERED_ONLY;
 
 bool hasSelections = false;
 for (int32 tier = 0; tier < MAX_AZERITE_EMPOWERED_TIER; ++tier)
 {
 if (azeriteEmpoweredItem->GetSelectedAzeritePower(tier))
 {
 hasSelections = true;
 break;
 }
 }
 
 if (!hasSelections)
 return SPELL_FAILED_AZERITE_EMPOWERED_NO_CHOICES_TO_UNDO;
 
 if (!m_caster->ToPlayer()->HasEnoughMoney(azeriteEmpoweredItem->GetRespecCost()))
 return SPELL_FAILED_DONT_REPORT;
 
 break;
 }
 default:
 break;
 }
 }
 
 // check weapon presence in slots for main/offhand weapons
 if (!(_triggeredCastFlags & TRIGGERED_IGNORE_EQUIPPED_ITEM_REQUIREMENT) && m_spellInfo->EquippedItemClass >= 0)
 {
 auto weaponCheck = [&](WeaponAttackType attackType) -> SpellCastResult
 {
 Item const* item = player->GetWeaponForAttack(attackType);
 
 // skip spell if no weapon in slot or broken
 if (!item || item->IsBroken())
 return SPELL_FAILED_EQUIPPED_ITEM_CLASS;
 
 // skip spell if weapon not fit to triggered spell
 if (!item->IsFitToSpellRequirements(m_spellInfo))
 return SPELL_FAILED_EQUIPPED_ITEM_CLASS;
 
 return SPELL_CAST_OK;
 };
 
 if (m_spellInfo->HasAttribute(SPELL_ATTR3_REQUIRES_MAIN_HAND_WEAPON))
 {
 SpellCastResult mainHandResult = weaponCheck(BASE_ATTACK);
 if (mainHandResult != SPELL_CAST_OK)
 return mainHandResult;
 }
 
 if (m_spellInfo->HasAttribute(SPELL_ATTR3_REQUIRES_OFF_HAND_WEAPON))
 {
 SpellCastResult offHandResult = weaponCheck(OFF_ATTACK);
 if (offHandResult != SPELL_CAST_OK)
 return offHandResult;
 }
 }
 
 return SPELL_CAST_OK;
}
 
void Spell::Delayed() // only called in DealDamage()
{
 Unit* unitCaster = m_caster->ToUnit();
 if (!unitCaster)
 return;
 
 if (IsDelayableNoMore()) // Spells may only be delayed twice
 return;
 
 //check pushback reduce
 int32 delaytime = 500; // spellcasting delay is normally 500ms
 
 int32 delayReduce = 100; // must be initialized to 100 for percent modifiers
 if (Player* player = unitCaster->GetSpellModOwner())
 player->ApplySpellMod(m_spellInfo, SpellModOp::ResistPushback, delayReduce, this);
 delayReduce += unitCaster->GetTotalAuraModifier(SPELL_AURA_REDUCE_PUSHBACK) - 100;
 if (delayReduce >= 100)
 return;
 
 AddPct(delaytime, -delayReduce);
 
 if (m_timer + delaytime > m_casttime)
 {
 delaytime = m_casttime - m_timer;
 m_timer = m_casttime;
 }
 else
 m_timer += delaytime;
 
 WorldPackets::Spells::SpellDelayed spellDelayed;
 spellDelayed.Caster = unitCaster->GetGUID();
 spellDelayed.ActualDelay = delaytime;
 
 unitCaster->SendMessageToSet(spellDelayed.Write(), true);
}
 
void Spell::DelayedChannel()
{
 Unit* unitCaster = m_caster->ToUnit();
 if (!unitCaster)
 return;
 
 if (m_spellState != SPELL_STATE_CASTING)
 return;
 
 if (IsDelayableNoMore()) // Spells may only be delayed twice
 return;
 
 //check pushback reduce
 // should be affected by modifiers, not take the dbc duration.
 int32 duration = ((m_channeledDuration > 0) ? m_channeledDuration : m_spellInfo->GetDuration());
 
 int32 delaytime = CalculatePct(duration, 25); // channeling delay is normally 25% of its time per hit
 
 int32 delayReduce = 100; // must be initialized to 100 for percent modifiers
 if (Player* player = unitCaster->GetSpellModOwner())
 player->ApplySpellMod(m_spellInfo, SpellModOp::ResistPushback, delayReduce, this);
 delayReduce += unitCaster->GetTotalAuraModifier(SPELL_AURA_REDUCE_PUSHBACK) - 100;
 if (delayReduce >= 100)
 return;
 
 AddPct(delaytime, -delayReduce);
 
 if (m_timer <= delaytime)
 {
 delaytime = m_timer;
 m_timer = 0;
 }
 else
 m_timer -= delaytime;
 
 for (TargetInfo const& targetInfo : m_UniqueTargetInfo)
 if (targetInfo.MissCondition == SPELL_MISS_NONE)
 if (Unit* unit = (unitCaster->GetGUID() == targetInfo.TargetGUID) ? unitCaster : ObjectAccessor::GetUnit(*unitCaster, targetInfo.TargetGUID))
 unit->DelayOwnedAuras(m_spellInfo->Id, m_originalCasterGUID, delaytime);
 
 // partially interrupt persistent area auras
 if (DynamicObject* dynObj = unitCaster->GetDynObject(m_spellInfo->Id))
 dynObj->Delay(delaytime);
 
 SendChannelUpdate(m_timer);
}
 
bool Spell::HasPowerTypeCost(Powers power) const
{
 return GetPowerTypeCostAmount(power).has_value();
}
 
Optional<int32> Spell::GetPowerTypeCostAmount(Powers power) const
{
 auto itr = std::find_if(m_powerCost.cbegin(), m_powerCost.cend(), [power](SpellPowerCost const& cost)
 {
 return cost.Power == power;
 });
 
 if (itr == m_powerCost.cend())
 return { };
 
 return itr->Amount;
}
 
bool Spell::UpdatePointers()
{
 if (m_originalCasterGUID == m_caster->GetGUID())
 m_originalCaster = m_caster->ToUnit();
 else
 {
 m_originalCaster = ObjectAccessor::GetUnit(*m_caster, m_originalCasterGUID);
 if (m_originalCaster && !m_originalCaster->IsInWorld())
 m_originalCaster = nullptr;
 }
 
 if (!m_castItemGUID.IsEmpty() && m_caster->GetTypeId() == TYPEID_PLAYER)
 {
 m_CastItem = m_caster->ToPlayer()->GetItemByGuid(m_castItemGUID);
 m_castItemLevel = -1;
 // cast item not found, somehow the item is no longer where we expected
 if (!m_CastItem)
 return false;
 
 // check if the item is really the same, in case it has been wrapped for example
 if (m_castItemEntry != m_CastItem->GetEntry())
 return false;
 
 m_castItemLevel = int32(m_CastItem->GetItemLevel(m_caster->ToPlayer()));
 }
 
 m_targets.Update(m_caster);
 
 // further actions done only for dest targets
 if (!m_targets.HasDst())
 return true;
 
 // cache last transport
 WorldObject* transport = nullptr;
 
 // update effect destinations (in case of moved transport dest target)
 for (SpellEffectInfo const& spellEffectInfo : m_spellInfo->GetEffects())
 {
 SpellDestination& dest = m_destTargets[spellEffectInfo.EffectIndex];
 if (!dest._transportGUID)
 continue;
 
 if (!transport || transport->GetGUID() != dest._transportGUID)
 transport = ObjectAccessor::GetWorldObject(*m_caster, dest._transportGUID);
 
 if (transport)
 {
 dest._position.Relocate(transport);
 dest._position.RelocateOffset(dest._transportOffset);
 }
 }
 
 return true;
}
 
CurrentSpellTypes Spell::GetCurrentContainer() const
{
 if (m_spellInfo->IsNextMeleeSwingSpell())
 return CURRENT_MELEE_SPELL;
 else if (IsAutoRepeat())
 return CURRENT_AUTOREPEAT_SPELL;
 else if (m_spellInfo->IsChanneled())
 return CURRENT_CHANNELED_SPELL;
 
 return CURRENT_GENERIC_SPELL;
}
 
Difficulty Spell::GetCastDifficulty() const
{
 return m_caster->GetMap()->GetDifficultyID();
}
 
bool Spell::CheckEffectTarget(Unit const* target, SpellEffectInfo const& spellEffectInfo, Position const* losPosition) const
{
 switch (spellEffectInfo.ApplyAuraName)
 {
 case SPELL_AURA_MOD_POSSESS:
 case SPELL_AURA_MOD_CHARM:
 case SPELL_AURA_MOD_POSSESS_PET:
 case SPELL_AURA_AOE_CHARM:
 if (target->GetVehicleKit() && target->GetVehicleKit()->IsControllableVehicle())
 return false;
 if (target->IsMounted())
 return false;
 if (!target->GetCharmerGUID().IsEmpty())
 return false;
 if (int32 value = CalculateDamage(spellEffectInfo, target))
 if ((int32)target->GetLevelForTarget(m_caster) > value)
 return false;
 break;
 default:
 break;
 }
 
 // check for ignore LOS on the effect itself
 if (m_spellInfo->HasAttribute(SPELL_ATTR2_IGNORE_LINE_OF_SIGHT) || DisableMgr::IsDisabledFor(DISABLE_TYPE_SPELL, m_spellInfo->Id, nullptr, SPELL_DISABLE_LOS))
 return true;
 
 // check if gameobject ignores LOS
 if (GameObject const* gobCaster = m_caster->ToGameObject())
 if (!gobCaster->GetGOInfo()->GetRequireLOS())
 return true;
 
 // if spell is triggered, need to check for LOS disable on the aura triggering it and inherit that behaviour
 if (!m_spellInfo->HasAttribute(SPELL_ATTR5_ALWAYS_LINE_OF_SIGHT) && IsTriggered() && m_triggeredByAuraSpell && (m_triggeredByAuraSpell->HasAttribute(SPELL_ATTR2_IGNORE_LINE_OF_SIGHT) || DisableMgr::IsDisabledFor(DISABLE_TYPE_SPELL, m_triggeredByAuraSpell->Id, nullptr, SPELL_DISABLE_LOS)))
 return true;
 
 //Check targets for LOS visibility
 switch (spellEffectInfo.Effect)
 {
 case SPELL_EFFECT_SKIN_PLAYER_CORPSE:
 {
 if (!m_targets.GetCorpseTargetGUID())
 {
 if (IsWithinLOS(m_caster, target, true, VMAP::ModelIgnoreFlags::M2) && target->HasUnitFlag(UNIT_FLAG_SKINNABLE))
 return true;
 
 return false;
 }
 
 Corpse* corpse = ObjectAccessor::GetCorpse(*m_caster, m_targets.GetCorpseTargetGUID());
 if (!corpse)
 return false;
 
 if (target->GetGUID() != corpse->GetOwnerGUID())
 return false;
 
 if (!corpse->HasDynamicFlag(CORPSE_DYNFLAG_LOOTABLE))
 return false;
 
 if (!IsWithinLOS(m_caster, corpse, true, VMAP::ModelIgnoreFlags::M2))
 return false;
 
 break;
 }
 default:
 {
 if (!losPosition || m_spellInfo->HasAttribute(SPELL_ATTR5_ALWAYS_AOE_LINE_OF_SIGHT) || spellEffectInfo.EffectAttributes.HasFlag(SpellEffectAttributes::AlwaysAoeLineOfSight))
 {
 // Get GO cast coordinates if original caster -> GO
 WorldObject* caster = nullptr;
 if (m_originalCasterGUID.IsGameObject())
 caster = m_caster->GetMap()->GetGameObject(m_originalCasterGUID);
 if (!caster)
 caster = m_caster;
 
 if (target != m_caster && !IsWithinLOS(caster, target, true, VMAP::ModelIgnoreFlags::M2))
 return false;
 }
 
 if (losPosition)
 if (!IsWithinLOS(target, *losPosition, VMAP::ModelIgnoreFlags::M2))
 return false;
 }
 }
 
 return true;
}
 
bool Spell::CheckEffectTarget(GameObject const* target, SpellEffectInfo const& spellEffectInfo) const
{
 switch (spellEffectInfo.Effect)
 {
 case SPELL_EFFECT_GAMEOBJECT_DAMAGE:
 case SPELL_EFFECT_GAMEOBJECT_REPAIR:
 case SPELL_EFFECT_GAMEOBJECT_SET_DESTRUCTION_STATE:
 if (target->GetGoType() != GAMEOBJECT_TYPE_DESTRUCTIBLE_BUILDING)
 return false;
 break;
 default:
 break;
 }
 
 return true;
}
 
bool Spell::CheckEffectTarget(Item const* /*target*/, SpellEffectInfo const& /*spellEffectInfo*/) const
{
 return true;
}
 
bool Spell::IsTriggered() const
{
 return (_triggeredCastFlags & TRIGGERED_FULL_MASK) != 0;
}
 
bool Spell::IsIgnoringCooldowns() const
{
 return (_triggeredCastFlags & TRIGGERED_IGNORE_SPELL_AND_CATEGORY_CD) != 0;
}
 
bool Spell::IsFocusDisabled() const
{
 return ((_triggeredCastFlags & TRIGGERED_IGNORE_SET_FACING) || (m_spellInfo->IsChanneled() && !m_spellInfo->HasAttribute(SPELL_ATTR1_TRACK_TARGET_IN_CHANNEL)));
}
 
bool Spell::IsProcDisabled() const
{
 return (_triggeredCastFlags & TRIGGERED_DISALLOW_PROC_EVENTS) != 0;
}
 
bool Spell::IsChannelActive() const
{
 return m_caster->IsUnit() && m_caster->ToUnit()->GetChannelSpellId() != 0;
}
 
bool Spell::IsAutoActionResetSpell() const
{
 if (IsTriggered() || m_spellInfo->HasAttribute(SPELL_ATTR2_DO_NOT_RESET_COMBAT_TIMERS))
 return false;
 
 if (!m_casttime && m_spellInfo->HasAttribute(SPELL_ATTR6_DOESNT_RESET_SWING_TIMER_IF_INSTANT))
 return false;
 
 return true;
}
 
bool Spell::IsPositive() const
{
 return m_spellInfo->IsPositive() && (!m_triggeredByAuraSpell || m_triggeredByAuraSpell->IsPositive());
}
 
bool Spell::IsNeedSendToClient() const
{
 return m_SpellVisual.SpellXSpellVisualID || m_SpellVisual.ScriptVisualID || m_spellInfo->IsChanneled() ||
 (m_spellInfo->HasAttribute(SPELL_ATTR8_AURA_POINTS_ON_CLIENT)) || m_spellInfo->HasHitDelay() || (!m_triggeredByAuraSpell && !IsTriggered()) ||
 m_spellInfo->HasAttribute(SPELL_ATTR7_ALWAYS_CAST_LOG);
}
 
Unit* Spell::GetUnitCasterForEffectHandlers() const
{
 return m_originalCaster ? m_originalCaster : m_caster->ToUnit();
}
 
SpellEvent::SpellEvent(Spell* spell) : BasicEvent(), m_Spell(spell)
{
}
 
SpellEvent::~SpellEvent()
{
 if (m_Spell->getState() != SPELL_STATE_FINISHED)
 m_Spell->cancel();
 
 if (!m_Spell->IsDeletable())
 {
 TC_LOG_ERROR("spells", "~SpellEvent: {} {} tried to delete non-deletable spell {}. Was not deleted, causes memory leak.",
 (m_Spell->GetCaster()->GetTypeId() == TYPEID_PLAYER ? "Player" : "Creature"), m_Spell->GetCaster()->GetGUID().ToString(), m_Spell->m_spellInfo->Id);
 ABORT();
 }
}
 
bool SpellEvent::Execute(uint64 e_time, uint32 p_time)
{
 // update spell if it is not finished
 if (m_Spell->getState() != SPELL_STATE_FINISHED)
 m_Spell->update(p_time);
 
 // check spell state to process
 switch (m_Spell->getState())
 {
 case SPELL_STATE_FINISHED:
 {
 // spell was finished, check deletable state
 if (m_Spell->IsDeletable())
 {
 // check, if we do have unfinished triggered spells
 return true; // spell is deletable, finish event
 }
 // event will be re-added automatically at the end of routine)
 break;
 }
 case SPELL_STATE_DELAYED:
 {
 // first, check, if we have just started
 if (m_Spell->GetDelayStart() != 0)
 {
 // no, we aren't, do the typical update
 // check, if we have channeled spell on our hands
 /*
 if (m_Spell->m_spellInfo->IsChanneled())
 {
 // evented channeled spell is processed separately, cast once after delay, and not destroyed till finish
 // check, if we have casting anything else except this channeled spell and autorepeat
 if (m_Spell->GetCaster()->IsNonMeleeSpellCast(false, true, true))
 {
 // another non-melee non-delayed spell is cast now, abort
 m_Spell->cancel();
 }
 else
 {
 // Set last not triggered spell for apply spellmods
 ((Player*)m_Spell->GetCaster())->SetSpellModTakingSpell(m_Spell, true);
 // do the action (pass spell to channeling state)
 m_Spell->handle_immediate();
 
 // And remove after effect handling
 ((Player*)m_Spell->GetCaster())->SetSpellModTakingSpell(m_Spell, false);
 }
 // event will be re-added automatically at the end of routine)
 }
 else
 */
 {
 // run the spell handler and think about what we can do next
 uint64 t_offset = e_time - m_Spell->GetDelayStart();
 uint64 n_offset = m_Spell->handle_delayed(t_offset);
 if (n_offset)
 {
 // re-add us to the queue
 m_Spell->GetCaster()->m_Events.AddEvent(this, Milliseconds(m_Spell->GetDelayStart() + n_offset), false);
 return false; // event not complete
 }
 // event complete
 // finish update event will be re-added automatically at the end of routine)
 }
 }
 else
 {
 // delaying had just started, record the moment
 m_Spell->SetDelayStart(e_time);
 // handle effects on caster if the spell has travel time but also affects the caster in some way
 uint64 n_offset = m_Spell->handle_delayed(0);
 if (m_Spell->m_spellInfo->LaunchDelay)
 ASSERT(n_offset == uint64(std::floor(m_Spell->m_spellInfo->LaunchDelay * 1000.0f)));
 else
 ASSERT(n_offset == m_Spell->GetDelayMoment(), UI64FMTD " == " UI64FMTD, n_offset, m_Spell->GetDelayMoment());
 // re-plan the event for the delay moment
 m_Spell->GetCaster()->m_Events.AddEvent(this, Milliseconds(e_time + n_offset), false);
 return false; // event not complete
 }
 break;
 }
 default:
 {
 // all other states
 // event will be re-added automatically at the end of routine)
 break;
 }
 }
 
 // spell processing not complete, plan event on the next update interval
 m_Spell->GetCaster()->m_Events.AddEvent(this, Milliseconds(e_time + 1), false);
 return false; // event not complete
}
 
void SpellEvent::Abort(uint64 /*e_time*/)
{
 // oops, the spell we try to do is aborted
 if (m_Spell->getState() != SPELL_STATE_FINISHED)
 m_Spell->cancel();
}
 
bool SpellEvent::IsDeletable() const
{
 return m_Spell->IsDeletable();
}
 
bool Spell::IsValidDeadOrAliveTarget(Unit const* target) const
{
 if (target->IsAlive())
 return !m_spellInfo->IsRequiringDeadTarget();
 if (m_spellInfo->IsAllowingDeadTarget())
 return true;
 return false;
}
 
void Spell::HandleLaunchPhase()
{
 // handle effects with SPELL_EFFECT_HANDLE_LAUNCH mode
 for (SpellEffectInfo const& spellEffectInfo : m_spellInfo->GetEffects())
 {
 // don't do anything for empty effect
 if (!spellEffectInfo.IsEffect())
 continue;
 
 HandleEffects(nullptr, nullptr, nullptr, nullptr, spellEffectInfo, SPELL_EFFECT_HANDLE_LAUNCH);
 }
 
 PrepareTargetProcessing();
 
 for (TargetInfo& target : m_UniqueTargetInfo)
 PreprocessSpellLaunch(target);
 
 for (SpellEffectInfo const& spellEffectInfo : m_spellInfo->GetEffects())
 {
 float multiplier = 1.0f;
 if (m_applyMultiplierMask & (1 << spellEffectInfo.EffectIndex))
 multiplier = spellEffectInfo.CalcDamageMultiplier(m_originalCaster, this);
 
 for (TargetInfo& target : m_UniqueTargetInfo)
 {
 uint32 mask = target.EffectMask;
 if (!(mask & (1 << spellEffectInfo.EffectIndex)))
 continue;
 
 DoEffectOnLaunchTarget(target, multiplier, spellEffectInfo);
 }
 }
 
 FinishTargetProcessing();
}
 
void Spell::PreprocessSpellLaunch(TargetInfo& targetInfo)
{
 Unit* targetUnit = m_caster->GetGUID() == targetInfo.TargetGUID ? m_caster->ToUnit() : ObjectAccessor::GetUnit(*m_caster, targetInfo.TargetGUID);
 if (!targetUnit)
 return;
 
 // This will only cause combat - the target will engage once the projectile hits (in Spell::TargetInfo::PreprocessTarget)
 if (m_originalCaster && targetInfo.MissCondition != SPELL_MISS_EVADE && !m_originalCaster->IsFriendlyTo(targetUnit) && (!m_spellInfo->IsPositive() || m_spellInfo->HasEffect(SPELL_EFFECT_DISPEL)) && (m_spellInfo->HasInitialAggro() || targetUnit->IsEngaged()))
 m_originalCaster->SetInCombatWith(targetUnit, true);
 
 Unit* unit = nullptr;
 // In case spell hit target, do all effect on that target
 if (targetInfo.MissCondition == SPELL_MISS_NONE)
 unit = targetUnit;
 // In case spell reflect from target, do all effect on caster (if hit)
 else if (targetInfo.MissCondition == SPELL_MISS_REFLECT && targetInfo.ReflectResult == SPELL_MISS_NONE)
 unit = m_caster->ToUnit();
 
 if (!unit)
 return;
 
 float critChance = m_spellValue->CriticalChance;
 if (m_originalCaster)
 {
 if (!critChance)
 critChance = m_originalCaster->SpellCritChanceDone(this, nullptr, m_spellSchoolMask, m_attackType);
 critChance = unit->SpellCritChanceTaken(m_originalCaster, this, nullptr, m_spellSchoolMask, critChance, m_attackType);
 }
 
 targetInfo.IsCrit = roll_chance_f(critChance);
}
 
void Spell::DoEffectOnLaunchTarget(TargetInfo& targetInfo, float multiplier, SpellEffectInfo const& spellEffectInfo)
{
 Unit* unit = nullptr;
 // In case spell hit target, do all effect on that target
 if (targetInfo.MissCondition == SPELL_MISS_NONE || (targetInfo.MissCondition == SPELL_MISS_BLOCK && !m_spellInfo->HasAttribute(SPELL_ATTR3_COMPLETELY_BLOCKED)))
 unit = m_caster->GetGUID() == targetInfo.TargetGUID ? m_caster->ToUnit() : ObjectAccessor::GetUnit(*m_caster, targetInfo.TargetGUID);
 // In case spell reflect from target, do all effect on caster (if hit)
 else if (targetInfo.MissCondition == SPELL_MISS_REFLECT && targetInfo.ReflectResult == SPELL_MISS_NONE)
 unit = m_caster->ToUnit();
 
 if (!unit)
 return;
 
 m_damage = 0;
 m_healing = 0;
 
 HandleEffects(unit, nullptr, nullptr, nullptr, spellEffectInfo, SPELL_EFFECT_HANDLE_LAUNCH_TARGET);
 
 if (m_originalCaster && m_damage > 0)
 {
 bool isAoeTarget = spellEffectInfo.IsTargetingArea() || spellEffectInfo.IsAreaAuraEffect() || spellEffectInfo.IsEffect(SPELL_EFFECT_PERSISTENT_AREA_AURA);
 if (isAoeTarget || m_spellInfo->HasAttribute(SPELL_ATTR5_TREAT_AS_AREA_EFFECT) || m_spellInfo->HasAttribute(SPELL_ATTR7_TREAT_AS_NPC_AOE))
 {
 m_damage = unit->CalculateAOEAvoidance(m_damage, m_spellInfo->SchoolMask, !m_originalCaster->IsControlledByPlayer() || m_spellInfo->HasAttribute(SPELL_ATTR7_TREAT_AS_NPC_AOE));
 
 if (m_originalCaster->GetTypeId() == TYPEID_PLAYER)
 {
 int64 targetCount = !isAoeTarget && m_spellValue->ParentSpellTargetCount ? *m_spellValue->ParentSpellTargetCount : GetUnitTargetCountForEffect(spellEffectInfo.EffectIndex);
 int32 targetIndex = !isAoeTarget && m_spellValue->ParentSpellTargetIndex ? *m_spellValue->ParentSpellTargetIndex : GetUnitTargetIndexForEffect(targetInfo.TargetGUID, spellEffectInfo.EffectIndex);
 
 // sqrt target cap damage calculation
 if (m_spellInfo->SqrtDamageAndHealingDiminishing.MaxTargets
 && targetCount > m_spellInfo->SqrtDamageAndHealingDiminishing.MaxTargets
 && targetIndex >= m_spellInfo->SqrtDamageAndHealingDiminishing.NumNonDiminishedTargets)
 m_damage = m_damage * std::sqrt(float(m_spellInfo->SqrtDamageAndHealingDiminishing.MaxTargets) / std::min(AOE_DAMAGE_TARGET_CAP, targetCount));
 
 // cap damage of player AOE
 if (targetCount > AOE_DAMAGE_TARGET_CAP)
 m_damage = m_damage * AOE_DAMAGE_TARGET_CAP / targetCount;
 }
 }
 }
 
 if (m_originalCaster && m_healing > 0)
 {
 bool isAoeTarget = spellEffectInfo.IsTargetingArea() || spellEffectInfo.IsAreaAuraEffect() || spellEffectInfo.IsEffect(SPELL_EFFECT_PERSISTENT_AREA_AURA);
 if (isAoeTarget || m_spellInfo->HasAttribute(SPELL_ATTR5_TREAT_AS_AREA_EFFECT))
 {
 if (m_originalCaster->GetTypeId() == TYPEID_PLAYER)
 {
 int64 targetCount = !isAoeTarget && m_spellValue->ParentSpellTargetCount ? *m_spellValue->ParentSpellTargetCount : GetUnitTargetCountForEffect(spellEffectInfo.EffectIndex);
 int32 targetIndex = !isAoeTarget && m_spellValue->ParentSpellTargetIndex ? *m_spellValue->ParentSpellTargetIndex : GetUnitTargetIndexForEffect(targetInfo.TargetGUID, spellEffectInfo.EffectIndex);
 
 // sqrt target cap healing calculation
 if (m_spellInfo->SqrtDamageAndHealingDiminishing.MaxTargets
 && targetCount > m_spellInfo->SqrtDamageAndHealingDiminishing.MaxTargets
 && targetIndex >= m_spellInfo->SqrtDamageAndHealingDiminishing.NumNonDiminishedTargets)
 m_healing = m_healing * std::sqrt(float(m_spellInfo->SqrtDamageAndHealingDiminishing.MaxTargets) / std::min(AOE_DAMAGE_TARGET_CAP, targetCount));
 }
 }
 }
 
 if (m_applyMultiplierMask & (1 << spellEffectInfo.EffectIndex))
 {
 m_damage = int32(m_damage * m_damageMultipliers[spellEffectInfo.EffectIndex]);
 m_healing = int32(m_healing * m_damageMultipliers[spellEffectInfo.EffectIndex]);
 
 m_damageMultipliers[spellEffectInfo.EffectIndex] *= multiplier;
 }
 
 targetInfo.Damage += m_damage;
 targetInfo.Healing += m_healing;
}
 
void Spell::ResetCombatTimers()
{
 Unit* unitCaster = m_caster->ToUnit();
 if (!unitCaster)
 return;
 
 unitCaster->resetAttackTimer(BASE_ATTACK);
 if (unitCaster->haveOffhandWeapon())
 unitCaster->resetAttackTimer(OFF_ATTACK);
 unitCaster->resetAttackTimer(RANGED_ATTACK);
}
 
SpellCastResult Spell::CanOpenLock(SpellEffectInfo const& effect, uint32 lockId, SkillType& skillId, int32& reqSkillValue, int32& skillValue)
{
 if (!lockId) // possible case for GO and maybe for items.
 return SPELL_CAST_OK;
 
 Unit const* unitCaster = m_caster->ToUnit();
 if (!unitCaster)
 return SPELL_FAILED_BAD_TARGETS;
 
 // Get LockInfo
 LockEntry const* lockInfo = sLockStore.LookupEntry(lockId);
 
 if (!lockInfo)
 return SPELL_FAILED_BAD_TARGETS;
 
 bool reqKey = false; // some locks not have reqs
 
 for (int j = 0; j < MAX_LOCK_CASE; ++j)
 {
 switch (lockInfo->Type[j])
 {
 // check key item (many fit cases can be)
 case LOCK_KEY_ITEM:
 if (lockInfo->Index[j] && m_CastItem && int32(m_CastItem->GetEntry()) == lockInfo->Index[j])
 return SPELL_CAST_OK;
 reqKey = true;
 break;
 // check key skill (only single first fit case can be)
 case LOCK_KEY_SKILL:
 {
 reqKey = true;
 
 // wrong locktype, skip
 if (effect.MiscValue != lockInfo->Index[j])
 continue;
 
 skillId = SkillByLockType(LockType(lockInfo->Index[j]));
 
 if (skillId != SKILL_NONE || lockInfo->Index[j] == LOCKTYPE_LOCKPICKING)
 {
 reqSkillValue = lockInfo->Skill[j];
 
 // castitem check: rogue using skeleton keys. the skill values should not be added in this case.
 skillValue = 0;
 if (!m_CastItem && unitCaster->GetTypeId() == TYPEID_PLAYER)
 skillValue = unitCaster->ToPlayer()->GetSkillValue(skillId);
 else if (lockInfo->Index[j] == LOCKTYPE_LOCKPICKING)
 skillValue = unitCaster->GetLevel() * 5;
 
 // skill bonus provided by casting spell (mostly item spells)
 // add the effect base points modifier from the spell cast (cheat lock / skeleton key etc.)
 if (effect.TargetA.GetTarget() == TARGET_GAMEOBJECT_ITEM_TARGET || effect.TargetB.GetTarget() == TARGET_GAMEOBJECT_ITEM_TARGET)
 skillValue += effect.CalcValue();
 
 if (skillValue < reqSkillValue)
 return SPELL_FAILED_LOW_CASTLEVEL;
 }
 
 return SPELL_CAST_OK;
 }
 case LOCK_KEY_SPELL:
 if (m_spellInfo->Id == uint32(lockInfo->Index[j]))
 return SPELL_CAST_OK;
 reqKey = true;
 break;
 }
 }
 
 if (reqKey)
 return SPELL_FAILED_BAD_TARGETS;
 
 return SPELL_CAST_OK;
}
 
void Spell::SetSpellValue(SpellValueMod mod, int32 value)
{
 if (mod < SPELLVALUE_BASE_POINT_END)
 {
 m_spellValue->EffectBasePoints[mod] = value;
 m_spellValue->CustomBasePointsMask |= 1 << mod;
 return;
 }
 
 switch (mod)
 {
 case SPELLVALUE_RADIUS_MOD:
 m_spellValue->RadiusMod = (float)value / 10000;
 break;
 case SPELLVALUE_MAX_TARGETS:
 m_spellValue->MaxAffectedTargets = (uint32)value;
 break;
 case SPELLVALUE_AURA_STACK:
 m_spellValue->AuraStackAmount = uint8(value);
 break;
 case SPELLVALUE_CRIT_CHANCE:
 m_spellValue->CriticalChance = value / 100.0f; // @todo ugly /100 remove when basepoints are double
 break;
 case SPELLVALUE_DURATION_PCT:
 m_spellValue->DurationMul = float(value) / 100.0f;
 break;
 case SPELLVALUE_DURATION:
 m_spellValue->Duration = value;
 break;
 case SPELLVALUE_PARENT_SPELL_TARGET_COUNT:
 m_spellValue->ParentSpellTargetCount = value;
 break;
 case SPELLVALUE_PARENT_SPELL_TARGET_INDEX:
 m_spellValue->ParentSpellTargetIndex = value;
 break;
 default:
 break;
 }
}
 
void Spell::PrepareTargetProcessing()
{
}
 
void Spell::FinishTargetProcessing()
{
 SendSpellExecuteLog();
}
 
void Spell::LoadScripts()
{
 sScriptMgr->CreateSpellScripts(m_spellInfo->Id, m_loadedScripts, this);
 for (SpellScript* script : m_loadedScripts)
 {
 TC_LOG_DEBUG("spells", "Spell::LoadScripts: Script `{}` for spell `{}` is loaded now", script->GetScriptName(), m_spellInfo->Id);
 script->Register();
 }
}
 
void Spell::CallScriptOnPrecastHandler()
{
 for (SpellScript* script : m_loadedScripts)
 {
 script->_PrepareScriptCall(SPELL_SCRIPT_HOOK_ON_PRECAST);
 script->OnPrecast();
 script->_FinishScriptCall();
 }
}
 
void Spell::CallScriptBeforeCastHandlers()
{
 for (SpellScript* script : m_loadedScripts)
 {
 script->_PrepareScriptCall(SPELL_SCRIPT_HOOK_BEFORE_CAST);
 for (SpellScript::CastHandler const& beforeCast : script->BeforeCast)
 beforeCast.Call(script);
 
 script->_FinishScriptCall();
 }
}
 
void Spell::CallScriptOnCastHandlers()
{
 for (SpellScript* script : m_loadedScripts)
 {
 script->_PrepareScriptCall(SPELL_SCRIPT_HOOK_ON_CAST);
 for (SpellScript::CastHandler const& onCast : script->OnCast)
 onCast.Call(script);
 
 script->_FinishScriptCall();
 }
}
 
void Spell::CallScriptAfterCastHandlers()
{
 for (SpellScript* script : m_loadedScripts)
 {
 script->_PrepareScriptCall(SPELL_SCRIPT_HOOK_AFTER_CAST);
 for (SpellScript::CastHandler const& afterCast : script->AfterCast)
 afterCast.Call(script);
 
 script->_FinishScriptCall();
 }
}
 
SpellCastResult Spell::CallScriptCheckCastHandlers()
{
 SpellCastResult retVal = SPELL_CAST_OK;
 for (SpellScript* script : m_loadedScripts)
 {
 script->_PrepareScriptCall(SPELL_SCRIPT_HOOK_CHECK_CAST);
 for (SpellScript::CheckCastHandler const& checkCast : script->OnCheckCast)
 {
 SpellCastResult tempResult = checkCast.Call(script);
 if (retVal == SPELL_CAST_OK)
 retVal = tempResult;
 }
 
 script->_FinishScriptCall();
 }
 return retVal;
}
 
int32 Spell::CallScriptCalcCastTimeHandlers(int32 castTime)
{
 for (SpellScript* script : m_loadedScripts)
 {
 script->_PrepareScriptCall(SPELL_SCRIPT_HOOK_CALC_CAST_TIME);
 castTime = script->CalcCastTime(castTime);
 script->_FinishScriptCall();
 }
 return castTime;
}
 
bool Spell::CallScriptEffectHandlers(SpellEffIndex effIndex, SpellEffectHandleMode mode)
{
 // execute script effect handler hooks and check if effects was prevented
 bool preventDefault = false;
 for (SpellScript* script : m_loadedScripts)
 {
 script->_InitHit();
 
 Trinity::IteratorPair<HookList<SpellScript::EffectHandler>::iterator> effectHandlers;
 SpellScriptHookType hookType;
 switch (mode)
 {
 case SPELL_EFFECT_HANDLE_LAUNCH:
 effectHandlers = Trinity::Containers::MakeIteratorPair(script->OnEffectLaunch.begin(), script->OnEffectLaunch.end());
 hookType = SPELL_SCRIPT_HOOK_EFFECT_LAUNCH;
 break;
 case SPELL_EFFECT_HANDLE_LAUNCH_TARGET:
 effectHandlers = Trinity::Containers::MakeIteratorPair(script->OnEffectLaunchTarget.begin(), script->OnEffectLaunchTarget.end());
 hookType = SPELL_SCRIPT_HOOK_EFFECT_LAUNCH_TARGET;
 break;
 case SPELL_EFFECT_HANDLE_HIT:
 effectHandlers = Trinity::Containers::MakeIteratorPair(script->OnEffectHit.begin(), script->OnEffectHit.end());
 hookType = SPELL_SCRIPT_HOOK_EFFECT_HIT;
 break;
 case SPELL_EFFECT_HANDLE_HIT_TARGET:
 effectHandlers = Trinity::Containers::MakeIteratorPair(script->OnEffectHitTarget.begin(), script->OnEffectHitTarget.end());
 hookType = SPELL_SCRIPT_HOOK_EFFECT_HIT_TARGET;
 break;
 default:
 ABORT();
 return false;
 }
 script->_PrepareScriptCall(hookType);
 for (SpellScript::EffectHandler const& effectHandler : effectHandlers)
 // effect execution can be prevented
 if (!script->_IsEffectPrevented(effIndex) && effectHandler.IsEffectAffected(m_spellInfo, effIndex))
 effectHandler.Call(script, effIndex);
 
 if (!preventDefault)
 preventDefault = script->_IsDefaultEffectPrevented(effIndex);
 
 script->_FinishScriptCall();
 }
 return preventDefault;
}
 
void Spell::CallScriptSuccessfulDispel(SpellEffIndex effIndex)
{
 for (SpellScript* script : m_loadedScripts)
 {
 script->_PrepareScriptCall(SPELL_SCRIPT_HOOK_EFFECT_SUCCESSFUL_DISPEL);
 for (SpellScript::EffectHandler const& onDispel : script->OnEffectSuccessfulDispel)
 onDispel.Call(script, effIndex);
 
 script->_FinishScriptCall();
 }
}
 
void Spell::CallScriptBeforeHitHandlers(SpellMissInfo missInfo)
{
 for (SpellScript* script : m_loadedScripts)
 {
 script->_InitHit();
 script->_PrepareScriptCall(SPELL_SCRIPT_HOOK_BEFORE_HIT);
 for (SpellScript::BeforeHitHandler const& beforeHit : script->BeforeHit)
 beforeHit.Call(script, missInfo);
 
 script->_FinishScriptCall();
 }
}
 
void Spell::CallScriptOnHitHandlers()
{
 for (SpellScript* script : m_loadedScripts)
 {
 script->_PrepareScriptCall(SPELL_SCRIPT_HOOK_HIT);
 for (SpellScript::HitHandler const& onHit : script->OnHit)
 onHit.Call(script);
 
 script->_FinishScriptCall();
 }
}
 
void Spell::CallScriptAfterHitHandlers()
{
 for (SpellScript* script : m_loadedScripts)
 {
 script->_PrepareScriptCall(SPELL_SCRIPT_HOOK_AFTER_HIT);
 for (SpellScript::HitHandler const& afterHit : script->AfterHit)
 afterHit.Call(script);
 
 script->_FinishScriptCall();
 }
}
 
void Spell::CallScriptCalcCritChanceHandlers(Unit const* victim, float& critChance)
{
 for (SpellScript* script : m_loadedScripts)
 {
 script->_PrepareScriptCall(SPELL_SCRIPT_HOOK_CALC_CRIT_CHANCE);
 for (SpellScript::OnCalcCritChanceHandler const& calcCritChance : script->OnCalcCritChance)
 calcCritChance.Call(script, victim, critChance);
 
 script->_FinishScriptCall();
 }
}
 
void Spell::CallScriptCalcDamageHandlers(Unit* victim, int32& damage, int32& flatMod, float& pctMod)
{
 for (SpellScript* script : m_loadedScripts)
 {
 script->_PrepareScriptCall(SPELL_SCRIPT_HOOK_CALC_DAMAGE);
 for (SpellScript::DamageAndHealingCalcHandler const& calcDamage : script->CalcDamage)
 calcDamage.Call(script, victim, damage, flatMod, pctMod);
 
 script->_FinishScriptCall();
 }
}
 
void Spell::CallScriptCalcHealingHandlers(Unit* victim, int32& healing, int32& flatMod, float& pctMod)
{
 for (SpellScript* script : m_loadedScripts)
 {
 script->_PrepareScriptCall(SPELL_SCRIPT_HOOK_CALC_HEALING);
 for (SpellScript::DamageAndHealingCalcHandler const& calcHealing : script->CalcHealing)
 calcHealing.Call(script, victim, healing, flatMod, pctMod);
 
 script->_FinishScriptCall();
 }
}
 
void Spell::CallScriptObjectAreaTargetSelectHandlers(std::list<WorldObject*>& targets, SpellEffIndex effIndex, SpellImplicitTargetInfo const& targetType)
{
 for (SpellScript* script : m_loadedScripts)
 {
 script->_PrepareScriptCall(SPELL_SCRIPT_HOOK_OBJECT_AREA_TARGET_SELECT);
 for (SpellScript::ObjectAreaTargetSelectHandler const& objectAreaTargetSelect : script->OnObjectAreaTargetSelect)
 if (objectAreaTargetSelect.IsEffectAffected(m_spellInfo, effIndex) && targetType.GetTarget() == objectAreaTargetSelect.GetTarget())
 objectAreaTargetSelect.Call(script, targets);
 
 script->_FinishScriptCall();
 }
}
 
void Spell::CallScriptObjectTargetSelectHandlers(WorldObject*& target, SpellEffIndex effIndex, SpellImplicitTargetInfo const& targetType)
{
 for (SpellScript* script : m_loadedScripts)
 {
 script->_PrepareScriptCall(SPELL_SCRIPT_HOOK_OBJECT_TARGET_SELECT);
 for (SpellScript::ObjectTargetSelectHandler const& objectTargetSelect : script->OnObjectTargetSelect)
 if (objectTargetSelect.IsEffectAffected(m_spellInfo, effIndex) && targetType.GetTarget() == objectTargetSelect.GetTarget())
 objectTargetSelect.Call(script, target);
 
 script->_FinishScriptCall();
 }
}
 
void Spell::CallScriptDestinationTargetSelectHandlers(SpellDestination& target, SpellEffIndex effIndex, SpellImplicitTargetInfo const& targetType)
{
 for (SpellScript* script : m_loadedScripts)
 {
 script->_PrepareScriptCall(SPELL_SCRIPT_HOOK_DESTINATION_TARGET_SELECT);
 for (SpellScript::DestinationTargetSelectHandler const& destinationTargetSelect : script->OnDestinationTargetSelect)
 if (destinationTargetSelect.IsEffectAffected(m_spellInfo, effIndex) && targetType.GetTarget() == destinationTargetSelect.GetTarget())
 destinationTargetSelect.Call(script, target);
 
 script->_FinishScriptCall();
 }
}
 
void Spell::CallScriptOnResistAbsorbCalculateHandlers(DamageInfo const& damageInfo, uint32& resistAmount, int32& absorbAmount)
{
 for (SpellScript* script : m_loadedScripts)
 {
 script->_PrepareScriptCall(SPELL_SCRIPT_HOOK_ON_RESIST_ABSORB_CALCULATION);
 for (SpellScript::OnCalculateResistAbsorbHandler const& calculateResistAbsorb : script->OnCalculateResistAbsorb)
 calculateResistAbsorb.Call(script, damageInfo, resistAmount, absorbAmount);
 
 script->_FinishScriptCall();
 }
}
 
bool Spell::CheckScriptEffectImplicitTargets(uint32 effIndex, uint32 effIndexToCheck)
{
 // Skip if there are not any script
 if (m_loadedScripts.empty())
 return true;
 
 for (SpellScript* script : m_loadedScripts)
 {
 for (SpellScript::ObjectTargetSelectHandler const& objectTargetSelect : script->OnObjectTargetSelect)
 if ((objectTargetSelect.IsEffectAffected(m_spellInfo, effIndex) && !objectTargetSelect.IsEffectAffected(m_spellInfo, effIndexToCheck)) ||
 (!objectTargetSelect.IsEffectAffected(m_spellInfo, effIndex) && objectTargetSelect.IsEffectAffected(m_spellInfo, effIndexToCheck)))
 return false;
 
 for (SpellScript::ObjectAreaTargetSelectHandler const& objectAreaTargetSelect : script->OnObjectAreaTargetSelect)
 if ((objectAreaTargetSelect.IsEffectAffected(m_spellInfo, effIndex) && !objectAreaTargetSelect.IsEffectAffected(m_spellInfo, effIndexToCheck)) ||
 (!objectAreaTargetSelect.IsEffectAffected(m_spellInfo, effIndex) && objectAreaTargetSelect.IsEffectAffected(m_spellInfo, effIndexToCheck)))
 return false;
 }
 return true;
}
 
bool Spell::CanExecuteTriggersOnHit(Unit* unit, SpellInfo const* triggeredByAura /*= nullptr*/) const
{
 bool onlyOnTarget = (triggeredByAura && (triggeredByAura->HasAttribute(SPELL_ATTR4_CLASS_TRIGGER_ONLY_ON_TARGET)));
 if (!onlyOnTarget)
 return true;
 
 // If triggeredByAura has SPELL_ATTR4_CLASS_TRIGGER_ONLY_ON_TARGET then it can only proc on either noncaster units...
 if (unit != m_caster)
 return true;
 
 // ... or caster if it is the only target
 if (m_UniqueTargetInfo.size() == 1)
 return true;
 
 return false;
}
 
void Spell::PrepareTriggersExecutedOnHit()
{
 Unit* unitCaster = m_caster->ToUnit();
 if (!unitCaster)
 return;
 
 // handle SPELL_AURA_ADD_TARGET_TRIGGER auras:
 // save auras which were present on spell caster on cast, to prevent triggered auras from affecting caster
 // and to correctly calculate proc chance when combopoints are present
 Unit::AuraEffectList const& targetTriggers = unitCaster->GetAuraEffectsByType(SPELL_AURA_ADD_TARGET_TRIGGER);
 for (AuraEffect const* aurEff : targetTriggers)
 {
 if (!aurEff->IsAffectingSpell(m_spellInfo))
 continue;
 
 if (SpellInfo const* spellInfo = sSpellMgr->GetSpellInfo(aurEff->GetSpellEffectInfo().TriggerSpell, GetCastDifficulty()))
 {
 // calculate the chance using spell base amount, because aura amount is not updated on combo-points change
 // this possibly needs fixing
 int32 auraBaseAmount = aurEff->GetBaseAmount();
 // proc chance is stored in effect amount
 int32 chance = unitCaster->CalculateSpellDamage(nullptr, aurEff->GetSpellEffectInfo(), &auraBaseAmount);
 chance *= aurEff->GetBase()->GetStackAmount();
 
 // build trigger and add to the list
 m_hitTriggerSpells.emplace_back(spellInfo, aurEff->GetSpellInfo(), chance);
 }
 }
}
 
// Global cooldowns management
bool CanHaveGlobalCooldown(WorldObject const* caster)
{
 // Only players or controlled units have global cooldown
 if (caster->GetTypeId() != TYPEID_PLAYER && (caster->GetTypeId() != TYPEID_UNIT || !const_cast<WorldObject*>(caster)->ToCreature()->GetCharmInfo()))
 return false;
 
 return true;
}
 
bool Spell::HasGlobalCooldown() const
{
 if (!CanHaveGlobalCooldown(m_caster))
 return false;
 
 return m_caster->ToUnit()->GetSpellHistory()->HasGlobalCooldown(m_spellInfo);
}
 
void Spell::TriggerGlobalCooldown()
{
 if (!CanHaveGlobalCooldown(m_caster))
 return;
 
 Milliseconds gcd(m_spellInfo->StartRecoveryTime);
 if (gcd == 0ms || !m_spellInfo->StartRecoveryCategory)
 return;
 
 if (m_caster->GetTypeId() == TYPEID_PLAYER)
 if (m_caster->ToPlayer()->GetCommandStatus(CHEAT_COOLDOWN))
 return;
 
 constexpr Milliseconds MinGCD = 750ms;
 constexpr Milliseconds MaxGCD = 1500ms;
 
 // Global cooldown can't leave range 1..1.5 secs
 // There are some spells (mostly not cast directly by player) that have < 1 sec and > 1.5 sec global cooldowns
 // but as tests show are not affected by any spell mods.
 if (gcd >= MinGCD && gcd <= MaxGCD)
 {
 // gcd modifier auras are applied only to own spells and only players have such mods
 if (Player* modOwner = m_caster->GetSpellModOwner())
 {
 int32 intGcd = gcd.count();
 modOwner->ApplySpellMod(m_spellInfo, SpellModOp::StartCooldown, intGcd, this);
 gcd = Milliseconds(intGcd);
 }
 
 bool isMeleeOrRangedSpell = m_spellInfo->DmgClass == SPELL_DAMAGE_CLASS_MELEE ||
 m_spellInfo->DmgClass == SPELL_DAMAGE_CLASS_RANGED ||
 m_spellInfo->HasAttribute(SPELL_ATTR0_USES_RANGED_SLOT) ||
 m_spellInfo->HasAttribute(SPELL_ATTR0_IS_ABILITY);
 
 // Apply haste rating
 if (gcd > MinGCD && ((m_spellInfo->StartRecoveryCategory == 133 && !isMeleeOrRangedSpell)))
 {
 gcd = Milliseconds(int64(gcd.count() * m_caster->ToUnit()->m_unitData->ModSpellHaste));
 RoundToInterval(gcd, MinGCD, MaxGCD);
 }
 
 if (gcd > MinGCD && m_caster->ToUnit()->HasAuraTypeWithAffectMask(SPELL_AURA_MOD_GLOBAL_COOLDOWN_BY_HASTE_REGEN, m_spellInfo))
 {
 gcd = Milliseconds(int64(gcd.count() * m_caster->ToUnit()->m_unitData->ModHasteRegen));
 RoundToInterval(gcd, MinGCD, MaxGCD);
 }
 }
 
 m_caster->ToUnit()->GetSpellHistory()->AddGlobalCooldown(m_spellInfo, gcd);
}
 
void Spell::CancelGlobalCooldown()
{
 if (!CanHaveGlobalCooldown(m_caster))
 return;
 
 if (!m_spellInfo->StartRecoveryTime)
 return;
 
 // Cancel global cooldown when interrupting current cast
 if (m_caster->ToUnit()->GetCurrentSpell(CURRENT_GENERIC_SPELL) != this)
 return;
 
 m_caster->ToUnit()->GetSpellHistory()->CancelGlobalCooldown(m_spellInfo);
}
 
std::string Spell::GetDebugInfo() const
{
 std::stringstream sstr;
 sstr << std::boolalpha
 << "Id: " << GetSpellInfo()->Id << " Name: '" << (*GetSpellInfo()->SpellName)[sWorld->GetDefaultDbcLocale()] << "' OriginalCaster: " << m_originalCasterGUID.ToString()
 << " State: " << getState();
 return sstr.str();
}
 
Trinity::unique_weak_ptr<Spell> Spell::GetWeakPtr() const
{
 return _spellEvent->GetSpellWeakPtr();
}
 
bool Spell::IsWithinLOS(WorldObject const* source, WorldObject const* target, bool targetAsSourceLocation, VMAP::ModelIgnoreFlags ignoreFlags) const
{
 if (m_spellInfo->HasAttribute(SPELL_ATTR2_IGNORE_LINE_OF_SIGHT))
 return true;
 
 if (DisableMgr::IsDisabledFor(DISABLE_TYPE_SPELL, m_spellInfo->Id, nullptr, SPELL_DISABLE_LOS))
 return true;
 
 if (target->IsCreature() && target->ToCreature()->CanIgnoreLineOfSightWhenCastingOnMe())
 return true;
 
 WorldObject const* src = targetAsSourceLocation ? target : source;
 WorldObject const* dst = targetAsSourceLocation ? source : target;
 return src->IsWithinLOSInMap(dst, LINEOFSIGHT_ALL_CHECKS, ignoreFlags);
}
 
bool Spell::IsWithinLOS(WorldObject const* source, Position const& target, VMAP::ModelIgnoreFlags ignoreFlags) const
{
 if (m_spellInfo->HasAttribute(SPELL_ATTR2_IGNORE_LINE_OF_SIGHT))
 return true;
 
 if (DisableMgr::IsDisabledFor(DISABLE_TYPE_SPELL, m_spellInfo->Id, nullptr, SPELL_DISABLE_LOS))
 return true;
 
 return source->IsWithinLOS(target.GetPositionX(), target.GetPositionY(), target.GetPositionZ(), LINEOFSIGHT_ALL_CHECKS, ignoreFlags);
}
 
namespace Trinity
{
 
WorldObjectSpellTargetCheck::WorldObjectSpellTargetCheck(WorldObject* caster, WorldObject* referer, SpellInfo const* spellInfo,
 SpellTargetCheckTypes selectionType, ConditionContainer const* condList, SpellTargetObjectTypes objectType) : _caster(caster), _referer(referer), _spellInfo(spellInfo),
 _targetSelectionType(selectionType), _condSrcInfo(nullptr), _condList(condList), _objectType(objectType)
{
 if (condList)
 _condSrcInfo = std::make_unique<ConditionSourceInfo>(nullptr, caster);
}
 
WorldObjectSpellTargetCheck::~WorldObjectSpellTargetCheck()
{
}
 
bool WorldObjectSpellTargetCheck::operator()(WorldObject* target) const
{
 if (_spellInfo->CheckTarget(_caster, target, true) != SPELL_CAST_OK)
 return false;
 
 Unit* unitTarget = target->ToUnit();
 if (Corpse* corpseTarget = target->ToCorpse())
 {
 // use owner for party/assistance checks
 if (Player* owner = ObjectAccessor::FindPlayer(corpseTarget->GetOwnerGUID()))
 unitTarget = owner;
 else
 return false;
 }
 
 Unit* refUnit = _referer->ToUnit();
 if (unitTarget)
 {
 // do only faction checks here
 switch (_targetSelectionType)
 {
 case TARGET_CHECK_ENEMY:
 if (unitTarget->IsTotem())
 return false;
 // TODO: restore IsValidAttackTarget for corpses using corpse owner (faction, etc)
 if (!target->IsCorpse() && !_caster->IsValidAttackTarget(unitTarget, _spellInfo))
 return false;
 break;
 case TARGET_CHECK_ALLY:
 if (unitTarget->IsTotem())
 return false;
 // TODO: restore IsValidAttackTarget for corpses using corpse owner (faction, etc)
 if (!target->IsCorpse() && !_caster->IsValidAssistTarget(unitTarget, _spellInfo))
 return false;
 break;
 case TARGET_CHECK_PARTY:
 if (!refUnit)
 return false;
 if (unitTarget->IsTotem())
 return false;
 // TODO: restore IsValidAttackTarget for corpses using corpse owner (faction, etc)
 if (!target->IsCorpse() && !_caster->IsValidAssistTarget(unitTarget, _spellInfo))
 return false;
 if (!refUnit->IsInPartyWith(unitTarget))
 return false;
 break;
 case TARGET_CHECK_RAID_CLASS:
 if (!refUnit)
 return false;
 if (refUnit->GetClass() != unitTarget->GetClass())
 return false;
 [[fallthrough]];
 case TARGET_CHECK_RAID:
 if (!refUnit)
 return false;
 if (unitTarget->IsTotem())
 return false;
 // TODO: restore IsValidAttackTarget for corpses using corpse owner (faction, etc)
 if (!target->IsCorpse() && !_caster->IsValidAssistTarget(unitTarget, _spellInfo))
 return false;
 if (!refUnit->IsInRaidWith(unitTarget))
 return false;
 break;
 case TARGET_CHECK_SUMMONED:
 if (!unitTarget->IsSummon())
 return false;
 if (unitTarget->ToTempSummon()->GetSummonerGUID() != _caster->GetGUID())
 return false;
 break;
 case TARGET_CHECK_THREAT:
 if (!_referer->IsUnit() || _referer->ToUnit()->GetThreatManager().GetThreat(unitTarget, true) <= 0.0f)
 return false;
 break;
 case TARGET_CHECK_TAP:
 if (_referer->GetTypeId() != TYPEID_UNIT || unitTarget->GetTypeId() != TYPEID_PLAYER)
 return false;
 if (!_referer->ToCreature()->isTappedBy(unitTarget->ToPlayer()))
 return false;
 break;
 default:
 break;
 }
 
 switch (_objectType)
 {
 case TARGET_OBJECT_TYPE_CORPSE:
 case TARGET_OBJECT_TYPE_CORPSE_ALLY:
 case TARGET_OBJECT_TYPE_CORPSE_ENEMY:
 if (unitTarget->IsAlive())
 return false;
 break;
 default:
 break;
 }
 }
 
 if (!_condSrcInfo)
 return true;
 _condSrcInfo->mConditionTargets[0] = target;
 return sConditionMgr->IsObjectMeetToConditions(*_condSrcInfo, *_condList);
}
 
WorldObjectSpellNearbyTargetCheck::WorldObjectSpellNearbyTargetCheck(float range, WorldObject* caster, SpellInfo const* spellInfo,
 SpellTargetCheckTypes selectionType, ConditionContainer const* condList, SpellTargetObjectTypes objectType)
 : WorldObjectSpellTargetCheck(caster, caster, spellInfo, selectionType, condList, objectType), _range(range), _position(caster) { }
 
bool WorldObjectSpellNearbyTargetCheck::operator()(WorldObject* target)
{
 float dist = target->GetDistance(*_position);
 if (dist < _range && WorldObjectSpellTargetCheck::operator ()(target))
 {
 _range = dist;
 return true;
 }
 return false;
}
 
WorldObjectSpellAreaTargetCheck::WorldObjectSpellAreaTargetCheck(float range, Position const* position, WorldObject* caster,
 WorldObject* referer, SpellInfo const* spellInfo, SpellTargetCheckTypes selectionType, ConditionContainer const* condList, SpellTargetObjectTypes objectType,
 WorldObjectSpellAreaTargetSearchReason searchReason /*= Area*/)
 : WorldObjectSpellTargetCheck(caster, referer, spellInfo, selectionType, condList, objectType), _range(range), _position(position), _searchReason(searchReason) { }
 
bool WorldObjectSpellAreaTargetCheck::operator()(WorldObject* target) const
{
 if (GameObject* gameObjectTarget = target->ToGameObject())
 {
 // isInRange including the dimension of the GO
 bool isInRange = gameObjectTarget->IsInRange(_position->GetPositionX(), _position->GetPositionY(), _position->GetPositionZ(), _range);
 if (!isInRange)
 return false;
 }
 else
 {
 bool isInsideCylinder = target->IsWithinDist2d(_position, _range) && std::abs(target->GetPositionZ() - _position->GetPositionZ()) <= _range;
 if (!isInsideCylinder)
 return false;
 
 if (Unit* unitTarget = target->ToUnit())
 {
 switch (_searchReason)
 {
 case WorldObjectSpellAreaTargetSearchReason::Area:
 if (!_spellInfo->HasAttribute(SPELL_ATTR8_CAN_HIT_AOE_UNTARGETABLE) && unitTarget->GetSpellOtherImmunityMask().HasFlag(SpellOtherImmunity::AoETarget))
 return false;
 break;
 case WorldObjectSpellAreaTargetSearchReason::Chain:
 if (unitTarget->GetSpellOtherImmunityMask().HasFlag(SpellOtherImmunity::ChainTarget))
 return false;
 break;
 default:
 break;
 }
 }
 }
 
 return WorldObjectSpellTargetCheck::operator ()(target);
}
 
WorldObjectSpellConeTargetCheck::WorldObjectSpellConeTargetCheck(Position const& coneSrc, float coneAngle, float lineWidth, float range, WorldObject* caster,
 SpellInfo const* spellInfo, SpellTargetCheckTypes selectionType, ConditionContainer const* condList, SpellTargetObjectTypes objectType)
 : WorldObjectSpellAreaTargetCheck(range, caster, caster, caster, spellInfo, selectionType, condList, objectType), _coneSrc(coneSrc), _coneAngle(coneAngle), _lineWidth(lineWidth) { }
 
bool WorldObjectSpellConeTargetCheck::operator()(WorldObject* target) const
{
 if (_spellInfo->HasAttribute(SPELL_ATTR0_CU_CONE_BACK))
 {
 if (_coneSrc.HasInArc(-std::abs(_coneAngle), target))
 return false;
 }
 else if (_spellInfo->HasAttribute(SPELL_ATTR0_CU_CONE_LINE))
 {
 if (!_coneSrc.HasInLine(target, target->GetCombatReach(), _lineWidth))
 return false;
 }
 else
 {
 if (!_caster->IsUnit() || !_caster->ToUnit()->IsWithinBoundaryRadius(target->ToUnit()))
 // ConeAngle > 0 -> select targets in front
 // ConeAngle < 0 -> select targets in back
 if (_coneSrc.HasInArc(_coneAngle, target) != G3D::fuzzyGe(_coneAngle, 0.f))
 return false;
 }
 return WorldObjectSpellAreaTargetCheck::operator ()(target);
}
 
WorldObjectSpellTrajTargetCheck::WorldObjectSpellTrajTargetCheck(float range, Position const* position, WorldObject* caster, SpellInfo const* spellInfo, SpellTargetCheckTypes selectionType, ConditionContainer const* condList, SpellTargetObjectTypes objectType)
 : WorldObjectSpellTargetCheck(caster, caster, spellInfo, selectionType, condList, objectType), _range(range), _position(position) { }
 
bool WorldObjectSpellTrajTargetCheck::operator()(WorldObject* target) const
{
 // return all targets on missile trajectory (0 - size of a missile)
 if (!_caster->HasInLine(target, target->GetCombatReach(), TRAJECTORY_MISSILE_SIZE))
 return false;
 
 if (target->GetExactDist2d(_position) > _range)
 return false;
 
 return WorldObjectSpellTargetCheck::operator ()(target);
}
 
WorldObjectSpellLineTargetCheck::WorldObjectSpellLineTargetCheck(Position const* srcPosition, Position const* dstPosition, float lineWidth, float range, WorldObject* caster,
 SpellInfo const* spellInfo, SpellTargetCheckTypes selectionType, ConditionContainer const* condList, SpellTargetObjectTypes objectType)
 : WorldObjectSpellAreaTargetCheck(range, caster, caster, caster, spellInfo, selectionType, condList, objectType), _position(*srcPosition), _lineWidth(lineWidth)
{
 if (dstPosition && *srcPosition != *dstPosition)
 _position.SetOrientation(srcPosition->GetAbsoluteAngle(dstPosition));
}
 
bool WorldObjectSpellLineTargetCheck::operator()(WorldObject* target) const
{
 if (!_position.HasInLine(target, target->GetCombatReach(), _lineWidth))
 return false;
 
 return WorldObjectSpellTargetCheck::operator ()(target);
}
 
void SelectRandomInjuredTargets(std::list<WorldObject*>& targets, size_t maxTargets, bool prioritizePlayers, Unit const* prioritizeGroupMembersOf /*= nullptr*/)
{
 if (targets.size() <= maxTargets)
 return;
 
 // Target priority states (bit indices)
 // higher value means lower selection priority
 // current list:
 // * injured player group members
 // * injured other players
 // * injured pets of group members
 // * injured other pets
 // * full health player group members
 // * full health other players
 // * full health pets of group members
 // * full health other pets
 enum
 {
 NOT_GROUPED,
 NOT_PLAYER,
 NOT_INJURED,
 END
 };
 
 std::array<std::ptrdiff_t, 1 << END> countsByPriority = {};
 std::vector<std::pair<WorldObject*, int32>> tempTargets;
 tempTargets.resize(targets.size());
 
 // categorize each target
 std::transform(targets.begin(), targets.end(), tempTargets.begin(), [&](WorldObject* target)
 {
 int32 negativePoints = 0;
 if (prioritizeGroupMembersOf && (!target->IsUnit() || target->ToUnit()->IsInRaidWith(prioritizeGroupMembersOf)))
 negativePoints |= 1 << NOT_GROUPED;
 
 if (prioritizePlayers && !target->IsPlayer() && (!target->IsCreature() || !target->ToCreature()->IsTreatedAsRaidUnit()))
 negativePoints |= 1 << NOT_PLAYER;
 
 if (!target->IsUnit() || target->ToUnit()->IsFullHealth())
 negativePoints |= 1 << NOT_INJURED;
 
 ++countsByPriority[negativePoints];
 return std::make_pair(target, negativePoints);
 });
 
 std::sort(tempTargets.begin(), tempTargets.end(), [](std::pair<WorldObject*, int32> const& left, std::pair<WorldObject*, int32> const& right)
 {
 return left.second < right.second;
 });
 
 std::size_t foundTargets = 0;
 for (std::ptrdiff_t countForPriority : countsByPriority)
 {
 if (foundTargets + countForPriority >= maxTargets)
 {
 // shuffle only the lower priority extras
 // example: our initial target list had 5 injured and 5 full health units and we want to select 7 targets
 // we always want to select 5 injured and 2 random full health ones
 Containers::RandomShuffle(tempTargets.begin() + foundTargets, tempTargets.begin() + foundTargets + countForPriority);
 break;
 }
 
 foundTargets += countForPriority;
 }
 
 targets.resize(maxTargets);
 std::transform(tempTargets.begin(), tempTargets.begin() + maxTargets, targets.begin(), std::mem_fn(&std::pair<WorldObject*, int32>::first));
}
} //namespace Trinity
 
CastSpellTargetArg::CastSpellTargetArg(WorldObject* target)
{
 if (target)
 {
 if (Unit* unitTarget = target->ToUnit())
 {
 Targets.emplace();
 Targets->SetUnitTarget(unitTarget);
 }
 else if (GameObject* goTarget = target->ToGameObject())
 {
 Targets.emplace();
 Targets->SetGOTarget(goTarget);
 }
 // error when targeting anything other than units and gameobjects
 }
 else
 Targets.emplace(); // nullptr is allowed
}
 
CastSpellExtraArgs::CastSpellExtraArgs() = default;
CastSpellExtraArgs::CastSpellExtraArgs(CastSpellExtraArgs const& other) = default;
CastSpellExtraArgs::CastSpellExtraArgs(CastSpellExtraArgs&& other) noexcept = default;
CastSpellExtraArgs& CastSpellExtraArgs::operator=(CastSpellExtraArgs const& other) = default;
CastSpellExtraArgs& CastSpellExtraArgs::operator=(CastSpellExtraArgs&& other) noexcept = default;
CastSpellExtraArgs::~CastSpellExtraArgs() = default;
 
CastSpellExtraArgs& CastSpellExtraArgs::SetTriggeringSpell(Spell const* triggeringSpell)
{
 TriggeringSpell = triggeringSpell;
 if (triggeringSpell)
 {
 OriginalCastItemLevel = triggeringSpell->m_castItemLevel;
 OriginalCastId = triggeringSpell->m_castId;
 }
 return *this;
}
 
CastSpellExtraArgs& CastSpellExtraArgs::SetTriggeringAura(AuraEffect const* triggeringAura)
{
 TriggeringAura = triggeringAura;
 if (triggeringAura)
 OriginalCastId = triggeringAura->GetBase()->GetCastId();
 
 return *this;
}
 
SpellCastVisual::operator UF::SpellCastVisual() const
{
 UF::SpellCastVisual visual;
 visual.SpellXSpellVisualID = SpellXSpellVisualID;
 visual.ScriptVisualID = ScriptVisualID;
 return visual;
}
 
SpellCastVisual::operator WorldPackets::Spells::SpellCastVisual() const
{
 return { int32(SpellXSpellVisualID), int32(ScriptVisualID) };
}