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SpellAuras.cpp
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SpellAuras.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 "Common.h"
#include "CellImpl.h"
#include "Config.h"
#include "DynamicObject.h"
#include "GridNotifiersImpl.h"
#include "Item.h"
#include "Log.h"
#include "ObjectAccessor.h"
#include "ObjectMgr.h"
#include "Opcodes.h"
#include "Player.h"
#include "ScriptMgr.h"
#include "Spell.h"
#include "SpellAuraEffects.h"
#include "SpellHistory.h"
#include "SpellMgr.h"
#include "SpellScript.h"
#include "Unit.h"
#include "Util.h"
#include "Vehicle.h"
#include "World.h"
#include "WorldPacket.h"
AuraCreateInfo::AuraCreateInfo(SpellInfo const* spellInfo, uint8 auraEffMask, WorldObject* owner) :
_spellInfo(spellInfo), _auraEffectMask(auraEffMask), _owner(owner)
{
ASSERT(spellInfo);
ASSERT(auraEffMask);
ASSERT(owner);
ASSERT(auraEffMask <= MAX_EFFECT_MASK);
}
AuraApplication::AuraApplication(Unit* target, Unit* caster, Aura* aura, uint8 effMask) :
_target(target), _base(aura), _removeMode(AURA_REMOVE_NONE), _slot(MAX_AURAS),
_flags(AFLAG_NONE), _effectsToApply(effMask), _needClientUpdate(false)
{
ASSERT(GetTarget() && GetBase());
if (GetBase()->CanBeSentToClient())
{
// Try find slot for aura
uint8 slot = MAX_AURAS;
// Lookup for auras already applied from spell
if (AuraApplication * foundAura = GetTarget()->GetAuraApplication(GetBase()->GetId(), GetBase()->GetCasterGUID(), GetBase()->GetCastItemGUID()))
{
// allow use single slot only by auras from same caster
slot = foundAura->GetSlot();
}
else
{
Unit::VisibleAuraMap const& visibleAuras = GetTarget()->GetVisibleAuras();
// lookup for free slots in units visibleAuras
Unit::VisibleAuraMap::const_iterator itr = visibleAuras.find(0);
for (uint32 freeSlot = 0; freeSlot < MAX_AURAS; ++itr, ++freeSlot)
{
if (itr == visibleAuras.end() || itr->first != freeSlot)
{
slot = freeSlot;
break;
}
}
}
// Register Visible Aura
if (slot < MAX_AURAS)
{
_slot = slot;
GetTarget()->SetVisibleAura(slot, this);
SetNeedClientUpdate();
TC_LOG_DEBUG("spells", "Aura: {} Effect: {} put to unit visible auras slot: {}", GetBase()->GetId(), GetEffectMask(), slot);
}
else
TC_LOG_ERROR("spells", "Aura: {} Effect: {} could not find empty unit visible slot", GetBase()->GetId(), GetEffectMask());
}
_InitFlags(caster, effMask);
}
void AuraApplication::_Remove()
{
uint8 slot = GetSlot();
if (slot >= MAX_AURAS)
return;
if (AuraApplication * foundAura = _target->GetAuraApplication(GetBase()->GetId(), GetBase()->GetCasterGUID(), GetBase()->GetCastItemGUID()))
{
// Reuse visible aura slot by aura which is still applied - prevent storing dead pointers
if (slot == foundAura->GetSlot())
{
if (GetTarget()->GetVisibleAura(slot) == this)
{
GetTarget()->SetVisibleAura(slot, foundAura);
foundAura->SetNeedClientUpdate();
}
// set not valid slot for aura - prevent removing other visible aura
slot = MAX_AURAS;
}
}
// update for out of range group members
if (slot < MAX_AURAS)
{
GetTarget()->RemoveVisibleAura(slot);
ClientUpdate(true);
}
}
void AuraApplication::_InitFlags(Unit* caster, uint8 effMask)
{
// mark as selfcast if needed
_flags |= (GetBase()->GetCasterGUID() == GetTarget()->GetGUID()) ? AFLAG_CASTER : AFLAG_NONE;
// aura is cast by self or an enemy
// one negative effect and we know aura is negative
if (IsSelfcast() || !caster || !caster->IsFriendlyTo(GetTarget()))
{
bool negativeFound = false;
for (uint8 i = 0; i < GetBase()->GetSpellInfo()->GetEffects().size(); ++i)
{
if (((1 << i) & effMask) && !GetBase()->GetSpellInfo()->IsPositiveEffect(i))
{
negativeFound = true;
break;
}
}
_flags |= negativeFound ? AFLAG_NEGATIVE : AFLAG_POSITIVE;
}
// aura is cast by friend
// one positive effect and we know aura is positive
else
{
bool positiveFound = false;
for (uint8 i = 0; i < GetBase()->GetSpellInfo()->GetEffects().size(); ++i)
{
if (((1 << i) & effMask) && GetBase()->GetSpellInfo()->IsPositiveEffect(i))
{
positiveFound = true;
break;
}
}
_flags |= positiveFound ? AFLAG_POSITIVE : AFLAG_NEGATIVE;
}
}
void AuraApplication::_HandleEffect(uint8 effIndex, bool apply)
{
AuraEffect* aurEff = GetBase()->GetEffect(effIndex);
ASSERT(aurEff);
ASSERT(HasEffect(effIndex) == (!apply));
ASSERT((1<<effIndex) & _effectsToApply);
TC_LOG_DEBUG("spells", "AuraApplication::_HandleEffect: {}, apply: {}: amount: {}", aurEff->GetAuraType(), apply, aurEff->GetAmount());
if (apply)
{
ASSERT(!(_flags & (1<<effIndex)));
_flags |= 1<<effIndex;
aurEff->HandleEffect(this, AURA_EFFECT_HANDLE_REAL, true);
}
else
{
ASSERT(_flags & (1<<effIndex));
_flags &= ~(1<<effIndex);
aurEff->HandleEffect(this, AURA_EFFECT_HANDLE_REAL, false);
// Remove all triggered by aura spells vs unlimited duration
aurEff->CleanupTriggeredSpells(GetTarget());
}
SetNeedClientUpdate();
}
void AuraApplication::UpdateApplyEffectMask(uint8 newEffMask, bool canHandleNewEffects)
{
if (_effectsToApply == newEffMask)
return;
uint8 removeEffMask = (_effectsToApply ^ newEffMask) & (~newEffMask);
uint8 addEffMask = (_effectsToApply ^ newEffMask) & (~_effectsToApply);
// quick check, removes application completely
if (removeEffMask == _effectsToApply && !addEffMask)
{
_target->_UnapplyAura(this, AURA_REMOVE_BY_DEFAULT);
return;
}
// update real effects only if they were applied already
for (uint8 i = 0; i < MAX_SPELL_EFFECTS; ++i)
if (HasEffect(i) && (removeEffMask & (1 << i)))
_HandleEffect(i, false);
_effectsToApply = newEffMask;
if (canHandleNewEffects)
for (uint8 i = 0; i < MAX_SPELL_EFFECTS; ++i)
if (addEffMask & (1 << i))
_HandleEffect(i, true);
}
void AuraApplication::BuildUpdatePacket(ByteBuffer& data, bool remove) const
{
data << uint8(_slot);
if (remove)
{
ASSERT(!_target->GetVisibleAura(_slot));
data << uint32(0);
return;
}
ASSERT(_target->GetVisibleAura(_slot));
Aura const* aura = GetBase();
data << uint32(aura->GetId());
uint32 flags = _flags;
if (aura->GetType() != DYNOBJ_AURA_TYPE && aura->GetMaxDuration() > 0 && !aura->GetSpellInfo()->HasAttribute(SPELL_ATTR5_HIDE_DURATION))
flags |= AFLAG_DURATION;
data << uint8(flags);
data << uint8(aura->GetCasterLevel());
// send stack amount for aura which could be stacked (never 0 - causes incorrect display) or charges
// stack amount has priority over charges (checked on retail with spell 50262)
data << uint8(aura->GetSpellInfo()->StackAmount ? aura->GetStackAmount() : aura->GetCharges());
if (!(flags & AFLAG_CASTER))
data << aura->GetCasterGUID().WriteAsPacked();
if (flags & AFLAG_DURATION)
{
data << uint32(aura->GetMaxDuration());
data << uint32(aura->GetDuration());
}
}
void AuraApplication::ClientUpdate(bool remove)
{
_needClientUpdate = false;
WorldPacket data(SMSG_AURA_UPDATE);
data << GetTarget()->GetPackGUID();
BuildUpdatePacket(data, remove);
_target->SendMessageToSet(&data, true);
}
std::string AuraApplication::GetDebugInfo() const
{
std::stringstream sstr;
sstr << "Base: " << (GetBase() ? GetBase()->GetDebugInfo() : "NULL")
<< "\nTarget: " << (GetTarget() ? GetTarget()->GetDebugInfo() : "NULL");
return sstr.str();
}
uint8 Aura::BuildEffectMaskForOwner(SpellInfo const* spellProto, uint8 availableEffectMask, WorldObject* owner)
{
ASSERT_NODEBUGINFO(spellProto);
ASSERT_NODEBUGINFO(owner);
uint8 effMask = 0;
switch (owner->GetTypeId())
{
case TYPEID_UNIT:
case TYPEID_PLAYER:
for (SpellEffectInfo const& spellEffectInfo : spellProto->GetEffects())
{
if (spellEffectInfo.IsUnitOwnedAuraEffect())
effMask |= 1 << spellEffectInfo.EffectIndex;
}
break;
case TYPEID_DYNAMICOBJECT:
for (SpellEffectInfo const& spellEffectInfo : spellProto->GetEffects())
{
if (spellEffectInfo.IsEffect(SPELL_EFFECT_PERSISTENT_AREA_AURA))
effMask |= 1 << spellEffectInfo.EffectIndex;
}
break;
default:
ABORT();
break;
}
return effMask & availableEffectMask;
}
Aura* Aura::TryRefreshStackOrCreate(AuraCreateInfo& createInfo, bool updateEffectMask)
{
ASSERT_NODEBUGINFO(createInfo.Caster || createInfo.CasterGUID);
if (createInfo.IsRefresh)
*createInfo.IsRefresh = false;
createInfo._auraEffectMask = Aura::BuildEffectMaskForOwner(createInfo._spellInfo, createInfo._auraEffectMask, createInfo._owner);
createInfo._targetEffectMask &= createInfo._auraEffectMask;
uint8 effMask = createInfo._auraEffectMask;
if (createInfo._targetEffectMask)
effMask = createInfo._targetEffectMask;
if (!effMask)
return nullptr;
if (Aura* foundAura = createInfo._owner->ToUnit()->_TryStackingOrRefreshingExistingAura(createInfo))
{
// we've here aura, which script triggered removal after modding stack amount
// check the state here, so we won't create new Aura object
if (foundAura->IsRemoved())
return nullptr;
if (createInfo.IsRefresh)
*createInfo.IsRefresh = true;
// add owner
Unit* unit = createInfo._owner->ToUnit();
// check effmask on owner application (if existing)
if (updateEffectMask)
if (AuraApplication* aurApp = foundAura->GetApplicationOfTarget(unit->GetGUID()))
aurApp->UpdateApplyEffectMask(effMask, false);
return foundAura;
}
else
return Create(createInfo);
}
Aura* Aura::TryCreate(AuraCreateInfo& createInfo)
{
uint8 effMask = createInfo._auraEffectMask;
if (createInfo._targetEffectMask)
effMask = createInfo._targetEffectMask;
effMask = Aura::BuildEffectMaskForOwner(createInfo._spellInfo, effMask, createInfo._owner);
if (!effMask)
return nullptr;
return Create(createInfo);
}
Aura* Aura::Create(AuraCreateInfo& createInfo)
{
// try to get caster of aura
if (createInfo.CasterGUID)
{
// world gameobjects can't own auras and they send empty casterguid
// checked on sniffs with spell 22247
if (createInfo.CasterGUID.IsGameObject())
{
createInfo.Caster = nullptr;
createInfo.CasterGUID.Clear();
}
else
{
if (createInfo._owner->GetGUID() == createInfo.CasterGUID)
createInfo.Caster = createInfo._owner->ToUnit();
else
createInfo.Caster = ObjectAccessor::GetUnit(*createInfo._owner, createInfo.CasterGUID);
}
}
else if (createInfo.Caster)
createInfo.CasterGUID = createInfo.Caster->GetGUID();
// check if aura can be owned by owner
if (Unit* ownerUnit = createInfo._owner->ToUnit())
if (!ownerUnit->IsInWorld() || ownerUnit->IsDuringRemoveFromWorld())
// owner not in world so don't allow to own not self cast single target auras
if (createInfo.CasterGUID != ownerUnit->GetGUID() && createInfo._spellInfo->IsSingleTarget())
return nullptr;
Aura* aura = nullptr;
switch (createInfo._owner->GetTypeId())
{
case TYPEID_UNIT:
case TYPEID_PLAYER:
{
aura = new UnitAura(createInfo);
// aura can be removed in Unit::_AddAura call
if (aura->IsRemoved())
return nullptr;
// add owner
uint8 effMask = createInfo._auraEffectMask;
if (createInfo._targetEffectMask)
effMask = createInfo._targetEffectMask;
effMask = Aura::BuildEffectMaskForOwner(createInfo._spellInfo, effMask, createInfo._owner);
ASSERT_NODEBUGINFO(effMask);
Unit* unit = createInfo._owner->ToUnit();
aura->ToUnitAura()->AddStaticApplication(unit, effMask);
break;
}
case TYPEID_DYNAMICOBJECT:
createInfo._auraEffectMask = Aura::BuildEffectMaskForOwner(createInfo._spellInfo, createInfo._auraEffectMask, createInfo._owner);
ASSERT_NODEBUGINFO(createInfo._auraEffectMask);
aura = new DynObjAura(createInfo);
break;
default:
ABORT();
return nullptr;
}
// scripts, etc.
if (aura->IsRemoved())
return nullptr;
return aura;
}
Aura::Aura(AuraCreateInfo const& createInfo) :
m_spellInfo(createInfo._spellInfo), m_casterGuid(createInfo.CasterGUID),
m_castItemGuid(createInfo.CastItemGUID), m_applyTime(GameTime::GetGameTime()),
m_owner(createInfo._owner), m_timeCla(0), m_updateTargetMapInterval(0),
_casterInfo(), m_procCharges(0), m_stackAmount(1),
m_isRemoved(false), m_isSingleTarget(false), m_isUsingCharges(false), m_dropEvent(nullptr),
m_procCooldown(TimePoint::min()), m_scriptRef(this, NoopAuraDeleter())
{
if (m_spellInfo->ManaPerSecond || m_spellInfo->ManaPerSecondPerLevel)
m_timeCla = 1 * IN_MILLISECONDS;
m_maxDuration = CalcMaxDuration(createInfo.Caster);
m_duration = m_maxDuration;
m_procCharges = CalcMaxCharges(createInfo.Caster);
m_isUsingCharges = m_procCharges != 0;
memset(m_effects, 0, sizeof(m_effects));
// m_casterLevel = cast item level/caster level, caster level should be saved to db, confirmed with sniffs
_casterInfo.Level = m_spellInfo->SpellLevel;
if (createInfo.Caster)
{
_casterInfo.Level = createInfo.Caster->GetLevel();
_casterInfo.ApplyResilience = createInfo.Caster->CanApplyResilience();
SaveCasterInfo(createInfo.Caster);
}
}
AuraScript* Aura::GetScriptByName(std::string const& scriptName) const
{
for (auto itr = m_loadedScripts.begin(); itr != m_loadedScripts.end(); ++itr)
if ((*itr)->_GetScriptName()->compare(scriptName) == 0)
return *itr;
return nullptr;
}
void Aura::_InitEffects(uint8 effMask, Unit* caster, int32 const* baseAmount)
{
// shouldn't be in constructor - functions in AuraEffect::AuraEffect use polymorphism
for (SpellEffectInfo const& spellEffectInfo : GetSpellInfo()->GetEffects())
if (effMask & (uint8(1) << spellEffectInfo.EffectIndex))
m_effects[spellEffectInfo.EffectIndex] = new AuraEffect(this, spellEffectInfo, baseAmount ? baseAmount + spellEffectInfo.EffectIndex : nullptr, caster);
}
bool Aura::CanPeriodicTickCrit(Unit const* caster) const
{
if (GetSpellInfo()->HasAttribute(SPELL_ATTR2_CANT_CRIT))
return false;
if (caster->HasAuraTypeWithAffectMask(SPELL_AURA_ABILITY_PERIODIC_CRIT, GetSpellInfo()))
return true;
// Rupture - since 3.3.3 can crit
if (GetSpellInfo()->SpellIconID == 500 && GetSpellInfo()->SpellFamilyName == SPELLFAMILY_ROGUE)
return true;
return false;
}
float Aura::CalcPeriodicCritChance(Unit const* caster) const
{
Player* modOwner = caster->GetSpellModOwner();
if (!modOwner || !CanPeriodicTickCrit(modOwner))
return 0.f;
float critChance = modOwner->SpellCritChanceDone(GetSpellInfo(), GetSpellInfo()->GetSchoolMask(), GetSpellInfo()->GetAttackType(), true);
return std::max(0.f, critChance);
}
void Aura::SaveCasterInfo(Unit* caster)
{
_casterInfo.CritChance = CalcPeriodicCritChance(caster);
if (GetType() == UNIT_AURA_TYPE)
{
/*
* Get critical chance from last effect type (damage or healing)
* this could potentialy be wrong if any spell has both damage and heal periodics
* The only two spells in 3.3.5 with those conditions are 17484 and 50344
* which shouldn't be allowed to crit, so we're fine
*/
for (SpellEffectInfo const& spellEffectInfo : GetSpellInfo()->GetEffects())
{
switch (spellEffectInfo.ApplyAuraName)
{
case SPELL_AURA_PERIODIC_HEAL:
_casterInfo.BonusDonePct = caster->SpellHealingPctDone(GetUnitOwner(), GetSpellInfo());
break;
case SPELL_AURA_PERIODIC_DAMAGE:
case SPELL_AURA_PERIODIC_LEECH:
_casterInfo.BonusDonePct = caster->SpellDamagePctDone(GetUnitOwner(), GetSpellInfo(), DOT);
break;
default:
break;
}
}
}
}
Aura::~Aura()
{
// unload scripts
for (auto itr = m_loadedScripts.begin(); itr != m_loadedScripts.end(); ++itr)
{
(*itr)->_Unload();
delete (*itr);
}
// free effects memory
for (uint8 i = 0; i < MAX_SPELL_EFFECTS; ++i)
delete m_effects[i];
ASSERT(m_applications.empty());
_DeleteRemovedApplications();
}
Unit* Aura::GetCaster() const
{
if (GetOwner()->GetGUID() == GetCasterGUID())
return GetUnitOwner();
return ObjectAccessor::GetUnit(*GetOwner(), GetCasterGUID());
}
AuraObjectType Aura::GetType() const
{
return (m_owner->GetTypeId() == TYPEID_DYNAMICOBJECT) ? DYNOBJ_AURA_TYPE : UNIT_AURA_TYPE;
}
void Aura::_ApplyForTarget(Unit* target, Unit* caster, AuraApplication* auraApp)
{
ASSERT(target);
ASSERT(auraApp);
// aura mustn't be already applied on target
ASSERT (!IsAppliedOnTarget(target->GetGUID()) && "Aura::_ApplyForTarget: aura musn't be already applied on target");
m_applications[target->GetGUID()] = auraApp;
// set infinity cooldown state for spells
if (caster && caster->GetTypeId() == TYPEID_PLAYER)
{
if (m_spellInfo->IsCooldownStartedOnEvent())
{
Item* castItem = m_castItemGuid ? caster->ToPlayer()->GetItemByGuid(m_castItemGuid) : nullptr;
caster->GetSpellHistory()->StartCooldown(m_spellInfo, castItem ? castItem->GetEntry() : 0, nullptr, true);
}
}
}
void Aura::_UnapplyForTarget(Unit* target, Unit* caster, AuraApplication* auraApp)
{
ASSERT(target);
ASSERT(auraApp->GetRemoveMode());
ASSERT(auraApp);
ApplicationMap::iterator itr = m_applications.find(target->GetGUID());
/// @todo Figure out why this happens
if (itr == m_applications.end())
{
TC_LOG_ERROR("spells", "Aura::_UnapplyForTarget, target: {}, caster: {}, spell:{} was not found in owners application map!",
target->GetGUID().ToString(), caster ? caster->GetGUID().ToString() : "0", auraApp->GetBase()->GetSpellInfo()->Id);
ABORT();
}
// aura has to be already applied
ASSERT(itr->second == auraApp);
m_applications.erase(itr);
_removedApplications.push_back(auraApp);
// reset cooldown state for spells
if (caster && GetSpellInfo()->IsCooldownStartedOnEvent())
// note: item based cooldowns and cooldown spell mods with charges ignored (unknown existed cases)
caster->GetSpellHistory()->SendCooldownEvent(GetSpellInfo());
}
// removes aura from all targets
// and marks aura as removed
void Aura::_Remove(AuraRemoveMode removeMode)
{
ASSERT (!m_isRemoved);
m_isRemoved = true;
ApplicationMap::iterator appItr = m_applications.begin();
for (appItr = m_applications.begin(); appItr != m_applications.end();)
{
AuraApplication * aurApp = appItr->second;
Unit* target = aurApp->GetTarget();
target->_UnapplyAura(aurApp, removeMode);
appItr = m_applications.begin();
}
if (m_dropEvent)
{
m_dropEvent->ScheduleAbort();
m_dropEvent = nullptr;
}
m_scriptRef = nullptr;
}
void Aura::UpdateTargetMap(Unit* caster, bool apply)
{
if (IsRemoved())
return;
m_updateTargetMapInterval = UPDATE_TARGET_MAP_INTERVAL;
// fill up to date target list
// target, effMask
std::unordered_map<Unit*, uint8> targets;
FillTargetMap(targets, caster);
std::vector<Unit*> targetsToRemove;
// mark all auras as ready to remove
for (auto const& applicationPair : m_applications)
{
auto itr = targets.find(applicationPair.second->GetTarget());
// not found in current area - remove the aura
if (itr == targets.end())
targetsToRemove.push_back(applicationPair.second->GetTarget());
else
{
// needs readding - remove now, will be applied in next update cycle
// (dbcs do not have auras which apply on same type of targets but have different radius, so this is not really needed)
if (itr->first->IsImmunedToSpell(GetSpellInfo(), caster, true) || !CanBeAppliedOn(itr->first))
{
targetsToRemove.push_back(applicationPair.second->GetTarget());
continue;
}
// check target immunities (for existing targets)
for (SpellEffectInfo const& spellEffectInfo : GetSpellInfo()->GetEffects())
if (itr->first->IsImmunedToSpellEffect(GetSpellInfo(), spellEffectInfo, caster, true))
itr->second &= ~(1 << spellEffectInfo.EffectIndex);
// needs to add/remove effects from application, don't remove from map so it gets updated
if (applicationPair.second->GetEffectMask() != itr->second)
continue;
// nothing to do - aura already applied
// remove from auras to register list
targets.erase(itr);
}
}
// register auras for units
for (auto itr = targets.begin(); itr != targets.end();)
{
bool addUnit = true;
AuraApplication* aurApp = GetApplicationOfTarget(itr->first->GetGUID());
if (!aurApp)
{
// check target immunities (for new targets)
for (SpellEffectInfo const& spellEffectInfo : GetSpellInfo()->GetEffects())
if (itr->first->IsImmunedToSpellEffect(GetSpellInfo(), spellEffectInfo, caster))
itr->second &= ~(1 << spellEffectInfo.EffectIndex);
if (!itr->second || itr->first->IsImmunedToSpell(GetSpellInfo(), caster) || !CanBeAppliedOn(itr->first))
addUnit = false;
}
if (addUnit && !itr->first->IsHighestExclusiveAura(this, true))
addUnit = false;
// Dynobj auras don't hit flying targets
if (GetType() == DYNOBJ_AURA_TYPE && itr->first->IsInFlight())
addUnit = false;
// Do not apply aura if it cannot stack with existing auras
if (addUnit)
{
// Allow to remove by stack when aura is going to be applied on owner
if (itr->first != GetOwner())
{
// check if not stacking aura already on target
// this one prevents unwanted usefull buff loss because of stacking and prevents overriding auras periodicaly by 2 near area aura owners
for (Unit::AuraApplicationMap::iterator iter = itr->first->GetAppliedAuras().begin(); iter != itr->first->GetAppliedAuras().end(); ++iter)
{
Aura const* aura = iter->second->GetBase();
if (!CanStackWith(aura))
{
addUnit = false;
break;
}
}
}
}
if (!addUnit)
itr = targets.erase(itr);
else
{
// owner has to be in world, or effect has to be applied to self
if (!GetOwner()->IsSelfOrInSameMap(itr->first))
{
/// @todo There is a crash caused by shadowfiend load addon
TC_LOG_FATAL("spells", "Aura {}: Owner {} (map {}) is not in the same map as target {} (map {}).", GetSpellInfo()->Id,
GetOwner()->GetName(), GetOwner()->IsInWorld() ? GetOwner()->GetMap()->GetId() : uint32(-1),
itr->first->GetName(), itr->first->IsInWorld() ? itr->first->GetMap()->GetId() : uint32(-1));
ABORT();
}
if (aurApp)
{
aurApp->UpdateApplyEffectMask(itr->second, true); // aura is already applied, this means we need to update effects of current application
itr = targets.erase(itr);
}
else
{
itr->first->_CreateAuraApplication(this, itr->second);
++itr;
}
}
}
// remove auras from units no longer needing them
for (Unit* unit : targetsToRemove)
if (AuraApplication* aurApp = GetApplicationOfTarget(unit->GetGUID()))
unit->_UnapplyAura(aurApp, AURA_REMOVE_BY_DEFAULT);
if (!apply)
return;
// apply aura effects for units
for (auto itr = targets.begin(); itr!= targets.end(); ++itr)
{
if (AuraApplication* aurApp = GetApplicationOfTarget(itr->first->GetGUID()))
{
// owner has to be in world, or effect has to be applied to self
ASSERT((!GetOwner()->IsInWorld() && GetOwner() == itr->first) || GetOwner()->IsInMap(itr->first));
itr->first->_ApplyAura(aurApp, itr->second);
}
}
}
// targets have to be registered and not have effect applied yet to use this function
void Aura::_ApplyEffectForTargets(uint8 effIndex)
{
// prepare list of aura targets
UnitList targetList;
for (ApplicationMap::iterator appIter = m_applications.begin(); appIter != m_applications.end(); ++appIter)
{
if ((appIter->second->GetEffectsToApply() & (1<<effIndex)) && !appIter->second->HasEffect(effIndex))
targetList.push_back(appIter->second->GetTarget());
}
// apply effect to targets
for (UnitList::iterator itr = targetList.begin(); itr != targetList.end(); ++itr)
{
if (GetApplicationOfTarget((*itr)->GetGUID()))
{
// owner has to be in world, or effect has to be applied to self
ASSERT((!GetOwner()->IsInWorld() && GetOwner() == *itr) || GetOwner()->IsInMap(*itr));
(*itr)->_ApplyAuraEffect(this, effIndex);
}
}
}
void Aura::UpdateOwner(uint32 diff, WorldObject* owner)
{
ASSERT(owner == m_owner);
Unit* caster = GetCaster();
// Apply spellmods for channeled auras
// used for example when triggered spell of spell:10 is modded
Spell* modSpell = nullptr;
Player* modOwner = nullptr;
if (caster)
{
modOwner = caster->GetSpellModOwner();
if (modOwner)
{
modSpell = modOwner->FindCurrentSpellBySpellId(GetId());
if (modSpell)
modOwner->SetSpellModTakingSpell(modSpell, true);
}
}
Update(diff, caster);
if (m_updateTargetMapInterval <= int32(diff))
UpdateTargetMap(caster);
else
m_updateTargetMapInterval -= diff;
// update aura effects
for (uint8 i = 0; i < MAX_SPELL_EFFECTS; ++i)
if (m_effects[i])
m_effects[i]->Update(diff, caster);
// remove spellmods after effects update
if (modSpell)
modOwner->SetSpellModTakingSpell(modSpell, false);
_DeleteRemovedApplications();
}
void Aura::Update(uint32 diff, Unit* caster)
{
if (m_duration > 0)
{
m_duration -= diff;
if (m_duration < 0)
m_duration = 0;
// handle manaPerSecond/manaPerSecondPerLevel
if (m_timeCla)
{
if (m_timeCla > int32(diff))
m_timeCla -= diff;
else if (caster)
{
if (int32 manaPerSecond = m_spellInfo->ManaPerSecond + m_spellInfo->ManaPerSecondPerLevel * caster->GetLevel())
{
m_timeCla += 1000 - diff;
Powers powertype = Powers(m_spellInfo->PowerType);
if (powertype == POWER_HEALTH)
{
if (int32(caster->GetHealth()) > manaPerSecond)
caster->ModifyHealth(-manaPerSecond);
else
Remove();
}
else if (int32(caster->GetPower(powertype)) >= manaPerSecond)
caster->ModifyPower(powertype, -manaPerSecond);
else
Remove();
}
}
}
}
}
int32 Aura::CalcMaxDuration(Unit* caster) const
{
return Aura::CalcMaxDuration(GetSpellInfo(), caster);
}
/*static*/ int32 Aura::CalcMaxDuration(SpellInfo const* spellInfo, WorldObject* caster)
{
Player* modOwner = nullptr;
int32 maxDuration;
if (caster)
{
modOwner = caster->GetSpellModOwner();
maxDuration = caster->CalcSpellDuration(spellInfo);
}
else
maxDuration = spellInfo->GetDuration();
if (spellInfo->IsPassive() && !spellInfo->DurationEntry)
maxDuration = -1;
// IsPermanent() checks max duration (which we are supposed to calculate here)
if (maxDuration != -1 && modOwner)
modOwner->ApplySpellMod(spellInfo->Id, SPELLMOD_DURATION, maxDuration);
return maxDuration;
}
void Aura::SetDuration(int32 duration, bool withMods)
{
if (withMods)
if (Unit* caster = GetCaster())
if (Player* modOwner = caster->GetSpellModOwner())
modOwner->ApplySpellMod(GetId(), SPELLMOD_DURATION, duration);
m_duration = duration;
SetNeedClientUpdateForTargets();
}
void Aura::RefreshDuration(bool withMods)
{
Unit* caster = GetCaster();
if (withMods && caster)
{
int32 duration = m_spellInfo->GetMaxDuration();
// Calculate duration of periodics affected by haste.
if (caster->HasAuraTypeWithAffectMask(SPELL_AURA_PERIODIC_HASTE, m_spellInfo) || m_spellInfo->HasAttribute(SPELL_ATTR5_HASTE_AFFECT_DURATION))
duration = int32(duration * caster->GetFloatValue(UNIT_MOD_CAST_SPEED));
SetMaxDuration(duration);
SetDuration(duration);
}
else
SetDuration(GetMaxDuration());
if (m_spellInfo->ManaPerSecond || m_spellInfo->ManaPerSecondPerLevel)
m_timeCla = 1 * IN_MILLISECONDS;
// also reset periodic counters
for (uint8 i = 0; i < MAX_SPELL_EFFECTS; ++i)
if (AuraEffect* aurEff = m_effects[i])
aurEff->ResetTicks();
}
void Aura::RefreshTimers(bool resetPeriodicTimer)
{
m_maxDuration = CalcMaxDuration();
RefreshDuration();
Unit* caster = GetCaster();
for (uint8 i = 0; i < MAX_SPELL_EFFECTS; ++i)
if (AuraEffect* aurEff = m_effects[i])
aurEff->CalculatePeriodic(caster, resetPeriodicTimer, false);
}
void Aura::SetCharges(uint8 charges)
{
if (m_procCharges == charges)
return;
m_procCharges = charges;
m_isUsingCharges = m_procCharges != 0;
SetNeedClientUpdateForTargets();
}
uint8 Aura::CalcMaxCharges(Unit* caster) const
{
uint32 maxProcCharges = m_spellInfo->ProcCharges;
if (SpellProcEntry const* procEntry = sSpellMgr->GetSpellProcEntry(GetId()))
maxProcCharges = procEntry->Charges;
if (caster)
if (Player* modOwner = caster->GetSpellModOwner())
modOwner->ApplySpellMod(GetId(), SPELLMOD_CHARGES, maxProcCharges);
return maxProcCharges;
}
bool Aura::ModCharges(int32 num, AuraRemoveMode removeMode)
{
if (IsUsingCharges())
{
int32 charges = m_procCharges + num;
int32 maxCharges = CalcMaxCharges();
// limit charges (only on charges increase, charges may be changed manually)
if ((num > 0) && (charges > int32(maxCharges)))
charges = maxCharges;
// we're out of charges, remove
else if (charges <= 0)
{
Remove(removeMode);
return true;
}
SetCharges(charges);
}
return false;
}
void Aura::ModChargesDelayed(int32 num, AuraRemoveMode removeMode)
{
m_dropEvent = nullptr;
ModCharges(num, removeMode);
}
void Aura::DropChargeDelayed(uint32 delay, AuraRemoveMode removeMode)
{
// aura is already during delayed charge drop
if (m_dropEvent)
return;
// only units have events
Unit* owner = m_owner->ToUnit();
if (!owner)
return;
m_dropEvent = new ChargeDropEvent(this, removeMode);
owner->m_Events.AddEvent(m_dropEvent, owner->m_Events.CalculateTime(Milliseconds(delay)));
}
void Aura::SetStackAmount(uint8 stackAmount)