void PetAI::UpdateAI(const uint32 diff)
{
    if (!me->isAlive() || !me->GetCharmInfo())
        return;

    Unit* owner = me->GetCharmerOrOwner();

    if (m_updateAlliesTimer <= diff)
        // UpdateAllies self set update timer
        UpdateAllies();
    else
        m_updateAlliesTimer -= diff;

    if (me->getVictim() && me->getVictim()->isAlive())
    {
        // is only necessary to stop casting, the pet must not exit combat
        if (me->getVictim()->HasBreakableByDamageCrowdControlAura(me))
        {
            me->InterruptNonMeleeSpells(false);
            return;
        }

        if (_needToStop())
        {
            sLog->outDebug(LOG_FILTER_GENERAL, "Pet AI stopped attacking [guid=%u]", me->GetGUIDLow());
            _stopAttack();
            return;
        }

        // Check before attacking to prevent pets from leaving stay position
        if (me->GetCharmInfo()->HasCommandState(COMMAND_STAY))
        {
            if (me->GetCharmInfo()->IsCommandAttack() || (me->GetCharmInfo()->IsAtStay() && me->IsWithinMeleeRange(me->getVictim())))
                DoMeleeAttackIfReady();
        }
        else
            DoMeleeAttackIfReady();
    }
    else
    {
        if (me->HasReactState(REACT_AGGRESSIVE) || me->GetCharmInfo()->IsAtStay())
        {
            // Every update we need to check targets only in certain cases
            // Aggressive - Allow auto select if owner or pet don't have a target
            // Stay - Only pick from pet or owner targets / attackers so targets won't run by
            //   while chasing our owner. Don't do auto select.
            // All other cases (ie: defensive) - Targets are assigned by AttackedBy(), OwnerAttackedBy(), OwnerAttacked(), etc.
            Unit* nextTarget = SelectNextTarget(me->HasReactState(REACT_AGGRESSIVE));

            if (nextTarget)
                AttackStart(nextTarget);
            else
                HandleReturnMovement();
        }
        else
            HandleReturnMovement();
    }

    // Autocast (casted only in combat or persistent spells in any state)
    if (!me->HasUnitState(UNIT_STATE_CASTING))
    {
        typedef std::vector<std::pair<Unit*, Spell*> > TargetSpellList;
        TargetSpellList targetSpellStore;

        for (uint8 i = 0; i < me->GetPetAutoSpellSize(); ++i)
        {
            uint32 spellID = me->GetPetAutoSpellOnPos(i);
            if (!spellID)
                continue;

            SpellInfo const* spellInfo = sSpellMgr->GetSpellInfo(spellID);
            if (!spellInfo)
                continue;

            if (me->GetCharmInfo() && me->GetCharmInfo()->GetGlobalCooldownMgr().HasGlobalCooldown(spellInfo))
                continue;

            if (spellInfo->IsPositive())
            {
                if (spellInfo->CanBeUsedInCombat())
                {
                    // check spell cooldown
                    if (me->HasSpellCooldown(spellInfo->Id))
                        continue;

                    // Check if we're in combat or commanded to attack
                    if (!me->isInCombat() && !me->GetCharmInfo()->IsCommandAttack())
                        continue;
                }

                Spell* spell = new Spell(me, spellInfo, TRIGGERED_NONE, 0);
                bool spellUsed = false;

                // Some spells can target enemy or friendly (DK Ghoul's Leap)
                // Check for enemy first (pet then owner)
                Unit* target = me->getAttackerForHelper();
                if (!target && owner)
                    target = owner->getAttackerForHelper();

                if (target)
//.........这里部分代码省略.........

void PetAI::UpdateAI(const uint32 diff)
{
    if (!m_creature->isAlive())
        return;

    Unit* owner = m_creature->GetCharmerOrOwner();

    if (m_updateAlliesTimer <= diff)
        // UpdateAllies self set update timer
        UpdateAllies();
    else
        m_updateAlliesTimer -= diff;

    if (inCombat && (!m_creature->getVictim() || (m_creature->IsPet() && ((Pet*)m_creature)->GetModeFlags() & PET_MODE_DISABLE_ACTIONS)))
        _stopAttack();

    // i_pet.getVictim() can't be used for check in case stop fighting, i_pet.getVictim() clear at Unit death etc.
    if (m_creature->getVictim())
    {
        if (_needToStop())
        {
            DEBUG_FILTER_LOG(LOG_FILTER_AI_AND_MOVEGENSS, "PetAI (guid = %u) is stopping attack.", m_creature->GetGUIDLow());
            _stopAttack();
            return;
        }

        bool meleeReach = m_creature->CanReachWithMeleeAttack(m_creature->getVictim());

        if (m_creature->IsStopped() || meleeReach)
        {
            // required to be stopped cases
            if (m_creature->IsStopped() && m_creature->IsNonMeleeSpellCasted(false))
            {
                if (m_creature->hasUnitState(UNIT_STAT_FOLLOW_MOVE))
                    m_creature->InterruptNonMeleeSpells(false);
                else
                    return;
            }
            // not required to be stopped case
            else if (DoMeleeAttackIfReady())
            {
                if (!m_creature->getVictim())
                    return;

                // if pet misses its target, it will also be the first in threat list
                m_creature->getVictim()->AddThreat(m_creature);

                if (_needToStop())
                    _stopAttack();
            }
        }
    }
    else if (owner && m_creature->GetCharmInfo())
    {
        if (owner->isInCombat() && !(m_creature->GetCharmInfo()->HasReactState(REACT_PASSIVE) || m_creature->GetCharmInfo()->HasCommandState(COMMAND_STAY)))
        {
            AttackStart(owner->getAttackerForHelper());
        }
        else if (m_creature->GetCharmInfo()->HasCommandState(COMMAND_FOLLOW))
        {
            if (!m_creature->hasUnitState(UNIT_STAT_FOLLOW))
            {
                m_creature->GetMotionMaster()->MoveFollow(owner, PET_FOLLOW_DIST, PET_FOLLOW_ANGLE);
            }
        }
    }

    // Autocast (casted only in combat or persistent spells in any state)
    if (!m_creature->IsNonMeleeSpellCasted(false))
    {
        typedef std::vector<std::pair<Unit*, Spell*> > TargetSpellList;
        TargetSpellList targetSpellStore;

        for (uint8 i = 0; i < m_creature->GetPetAutoSpellSize(); ++i)
        {
            uint32 spellID = m_creature->GetPetAutoSpellOnPos(i);
            if (!spellID)
                continue;

            SpellEntry const* spellInfo = sSpellStore.LookupEntry(spellID);
            if (!spellInfo)
                continue;

            if (m_creature->GetCharmInfo() && m_creature->GetCharmInfo()->GetGlobalCooldownMgr().HasGlobalCooldown(spellInfo))
                continue;

            // ignore some combinations of combat state and combat/noncombat spells
            if (!inCombat)
            {
                // ignore attacking spells, and allow only self/around spells
                if (!IsPositiveSpell(spellInfo->Id))
                    continue;

                // non combat spells allowed
                // only pet spells have IsNonCombatSpell and not fit this reqs:
                // Consume Shadows, Lesser Invisibility, so ignore checks for its
                if (!IsNonCombatSpell(spellInfo))
                {
                    // allow only spell without spell cost or with spell cost but not duration limit
                    int32 duration = GetSpellDuration(spellInfo);
//.........这里部分代码省略.........

//.........这里部分代码省略.........
    }
    else if (owner && owner->IsInCombat())
    {
        switch (m_creature->GetCharmState(CHARM_STATE_REACT))
        {
            case REACT_DEFENSIVE:
            {
                if (!m_creature->getVictim()
                    || !m_creature->getVictim()->isAlive()
                    || (m_primaryTargetGuid.IsEmpty() && owner->getVictim() != m_creature->getVictim() && owner->getVictim()->isAlive()))
                    AttackStart(owner->getAttackerForHelper());
                break;
            }
            case REACT_AGGRESSIVE:
            {
                if (!m_creature->getVictim() || !m_creature->getVictim()->isAlive())
                    AttackStart(owner->getAttackerForHelper());
                break;
            }
            case REACT_PASSIVE:
            default:
                break;
        }
    }

    UpdateAIType();

    if (m_creature->IsNonMeleeSpellCasted(true))
        return;

    // Autocast (casted only in combat or persistent spells in any state)
    if (!sWorld.getConfig(CONFIG_BOOL_PET_ADVANCED_AI) && m_AIType != PET_AI_PASSIVE)
    {
        typedef std::vector<std::pair<ObjectGuid, uint32> > TargetSpellList;
        TargetSpellList targetSpellStore;

        for (uint8 i = 0; i < m_creature->GetPetAutoSpellSize(); ++i)
        {
            uint32 spellID = m_creature->GetPetAutoSpellOnPos(i);
            if (!spellID)
                continue;

            SpellEntry const* spellInfo = sSpellStore.LookupEntry(spellID);
            if (!spellInfo)
                continue;

            if (m_creature->GetCharmInfo() && m_creature->GetCharmInfo()->GetGlobalCooldownMgr().HasGlobalCooldown(spellInfo))
                continue;

            if (m_creature->HasSpellCooldown(spellInfo))
                continue;

            // ignore some combinations of combat state and combat/noncombat spells
            if (!inCombat)
            {
                // ignore attacking spells, and allow only self/around spells
                if (!IsPositiveSpell(spellInfo->Id))
                    continue;

                // non combat spells allowed
                // only pet spells have IsNonCombatSpell and not fit this reqs:
                // Consume Shadows, Lesser Invisibility, so ignore checks for its
                if (!IsNonCombatSpell(spellInfo))
                {
                    // allow only spell without spell cost or with spell cost but not duration limit
                    int32 duration = GetSpellDuration(spellInfo);

void PetAI::UpdateAI(const uint32 diff)
{
    if (!me->isAlive())
        return;

    Unit* owner = me->GetCharmerOrOwner();

    if (m_updateAlliesTimer <= diff)
        // UpdateAllies self set update timer
        UpdateAllies();
    else
        m_updateAlliesTimer -= diff;

    // me->getVictim() can't be used for check in case stop fighting, me->getVictim() clear at Unit death etc.
    // Must also check if victim is alive
    if (me->getVictim() && me->getVictim()->isAlive())
    {
        // is only necessary to stop casting, the pet must not exit combat
        if (me->getVictim()->HasBreakableByDamageCrowdControlAura(me))
        {
            me->InterruptNonMeleeSpells(false);
            return;
        }

        if (_needToStop())
        {
            sLog->outDebug(LOG_FILTER_GENERAL, "Pet AI stopped attacking [guid=%u]", me->GetGUIDLow());
            _stopAttack();
            return;
        }

        DoMeleeAttackIfReady();
    }
    else if (owner && me->GetCharmInfo()) //no victim
    {
        // Only aggressive pets do target search every update.
        // Defensive pets do target search only in these cases:
        //  * Owner attacks something - handled by OwnerAttacked()
        //  * Owner receives damage - handled by OwnerDamagedBy()
        //  * Pet is in combat and current target dies - handled by KilledUnit()
        if (me->HasReactState(REACT_AGGRESSIVE))
        {
            Unit* nextTarget = SelectNextTarget();

            if (nextTarget)
                AttackStart(nextTarget);
            else
            {
                me->GetCharmInfo()->SetIsCommandAttack(false);
                HandleReturnMovement();
            }
        }
        else
        {
            me->GetCharmInfo()->SetIsCommandAttack(false);
            HandleReturnMovement();
        }
    }
    else if (owner && !me->HasUnitState(UNIT_STATE_FOLLOW)) // no charm info and no victim
        HandleReturnMovement();

    if (!me->GetCharmInfo())
        return;

    // Autocast (casted only in combat or persistent spells in any state)
    if (!me->HasUnitState(UNIT_STATE_CASTING))
    {
        typedef std::vector<std::pair<Unit*, Spell*> > TargetSpellList;
        TargetSpellList targetSpellStore;

        for (uint8 i = 0; i < me->GetPetAutoSpellSize(); ++i)
        {
            uint32 spellID = me->GetPetAutoSpellOnPos(i);
            if (!spellID)
                continue;

            SpellInfo const* spellInfo = sSpellMgr->GetSpellInfo(spellID);
            if (!spellInfo)
                continue;

            if (me->GetCharmInfo() && me->GetCharmInfo()->GetGlobalCooldownMgr().HasGlobalCooldown(spellInfo))
                continue;

            if (spellInfo->IsPositive())
            {
                if (spellInfo->CanBeUsedInCombat())
                {
                    // check spell cooldown
                    if (me->HasSpellCooldown(spellInfo->Id))
                        continue;

                    // Check if we're in combat or commanded to attack
                    if (!me->isInCombat() && !me->GetCharmInfo()->IsCommandAttack())
                        continue;
                }

                Spell* spell = new Spell(me, spellInfo, TRIGGERED_NONE, 0);
                bool spellUsed = false;

                // Some spells can target enemy or friendly (DK Ghoul's Leap)
//.........这里部分代码省略.........

void PetAI::UpdateAI(const uint32 diff)
{
    if (!m_unit->isAlive())
        return;
    Creature* creature = (m_unit->GetTypeId() == TYPEID_UNIT) ? static_cast<Creature*>(m_unit) : nullptr;
    Pet* pet = (creature && creature->IsPet()) ? static_cast<Pet*>(m_unit) : nullptr;
    
    Unit* owner = m_unit->GetMaster();
    if (!owner)
        return;

    Unit* victim = (pet && pet->GetModeFlags() & PET_MODE_DISABLE_ACTIONS) ? nullptr : m_unit->getVictim();

    if (m_updateAlliesTimer <= diff)
        // UpdateAllies self set update timer
        UpdateAllies();
    else
        m_updateAlliesTimer -= diff;

    if (inCombat && !victim)
    {
        m_unit->AttackStop(true, true);
        inCombat = false;
    }

    CharmInfo* charminfo = m_unit->GetCharmInfo();
    MANGOS_ASSERT(charminfo);

    if (charminfo->GetIsRetreating())
    {
        if (!owner->IsWithinDistInMap(m_unit, (PET_FOLLOW_DIST * 2)))
        {
            if (!m_unit->hasUnitState(UNIT_STAT_FOLLOW))
                m_unit->GetMotionMaster()->MoveFollow(owner, PET_FOLLOW_DIST, PET_FOLLOW_ANGLE);

            return;
        }
        else
            charminfo->SetIsRetreating();
    }
    else if (charminfo->GetSpellOpener() != 0) // have opener stored
    {
        uint32 minRange = charminfo->GetSpellOpenerMinRange();

        if (!(victim = m_unit->getVictim())
            || (minRange != 0 && m_unit->IsWithinDistInMap(victim, minRange)))
            charminfo->SetSpellOpener();
        else if (m_unit->IsWithinDistInMap(victim, charminfo->GetSpellOpenerMaxRange())
                && m_unit->IsWithinLOSInMap(victim))
        {
            // stop moving
            m_unit->clearUnitState(UNIT_STAT_MOVING);

            // auto turn to target
            m_unit->SetInFront(victim);

            if (victim->GetTypeId() == TYPEID_PLAYER)
                m_unit->SendCreateUpdateToPlayer((Player*)victim);

            if (owner->GetTypeId() == TYPEID_PLAYER)
                m_unit->SendCreateUpdateToPlayer((Player*)owner);

            uint32 spell_id = charminfo->GetSpellOpener();
            SpellEntry const* spellInfo = sSpellTemplate.LookupEntry<SpellEntry>(spell_id);

            Spell* spell = new Spell(m_unit, spellInfo, false);

            SpellCastResult result = spell->CheckPetCast(victim);

            if (result == SPELL_CAST_OK)
                spell->SpellStart(&(spell->m_targets));
            else
                delete spell;

            charminfo->SetSpellOpener();
        }
        else
            return;
    }
    // Auto cast (casted only in combat or persistent spells in any state)
    else if (!m_unit->IsNonMeleeSpellCasted(false))
    {
        typedef std::vector<std::pair<Unit*, Spell*> > TargetSpellList;
        TargetSpellList targetSpellStore;
        if (pet)
        {
            for (uint8 i = 0; i < pet->GetPetAutoSpellSize(); ++i)
            {
                uint32 spellID = pet->GetPetAutoSpellOnPos(i);
                if (!spellID)
                    continue;

                SpellEntry const* spellInfo = sSpellTemplate.LookupEntry<SpellEntry>(spellID);
                if (!spellInfo)
                    continue;

                if (!m_unit->IsSpellReady(*spellInfo))
                    continue;

                // ignore some combinations of combat state and combat/non combat spells
//.........这里部分代码省略.........

void PetAI::UpdateAI(const uint32 diff)
{
    if (!m_creature->isAlive())
        return;

    Unit* owner = m_creature->GetCharmerOrOwner();

    if (m_updateAlliesTimer <= diff)
        // UpdateAllies self set update timer
        UpdateAllies();
    else
        m_updateAlliesTimer -= diff;

    // m_creature->getVictim() can't be used for check in case stop fighting, m_creature->getVictim() clear at Unit death etc.
    if ( m_creature->getVictim() )
    {
        if ( _needToStop() )
        {
            DEBUG_LOG("Pet AI stoped attacking [guid=%u]", m_creature->GetGUIDLow());
            _stopAttack();
            return;
        }

        DoMeleeAttackIfReady();
    }
    else if (owner && m_creature->GetCharmInfo()) //no victim
    {
        Unit *nextTarget = SelectNextTarget();

        if (nextTarget)
            AttackStart(nextTarget);
        else
            HandleReturnMovement();
    }
    else if (owner && !m_creature->hasUnitState(UNIT_STAT_FOLLOW)) // no charm info and no victim
        m_creature->GetMotionMaster()->MoveFollow(owner,PET_FOLLOW_DIST, m_creature->GetFollowAngle());

    if (!me->GetCharmInfo())
        return;

    // Autocast (casted only in combat or persistent spells in any state)
    if (m_creature->GetGlobalCooldown() == 0 && !m_creature->hasUnitState(UNIT_STAT_CASTING))
    {
        typedef std::vector<std::pair<Unit*, Spell*> > TargetSpellList;
        TargetSpellList targetSpellStore;

        for (uint8 i = 0; i < m_creature->GetPetAutoSpellSize(); ++i)
        {
            uint32 spellID = m_creature->GetPetAutoSpellOnPos(i);
            if (!spellID)
                continue;

            SpellEntry const *spellInfo = sSpellStore.LookupEntry(spellID);
            if (!spellInfo)
                continue;

            // ignore some combinations of combat state and combat/noncombat spells
            if (!me->getVictim())
            {
                // ignore attacking spells, and allow only self/around spells
                if (!IsPositiveSpell(spellInfo->Id))
                    continue;

                // non combat spells allowed
                // only pet spells have IsNonCombatSpell and not fit this reqs:
                // Consume Shadows, Lesser Invisibility, so ignore checks for its
                if (!IsNonCombatSpell(spellInfo))
                {
                    // allow only spell without spell cost or with spell cost but not duration limit
                    int32 duration = GetSpellDuration(spellInfo);
                    if ((spellInfo->manaCost || spellInfo->ManaCostPercentage || spellInfo->manaPerSecond) && duration > 0)
                        continue;

                    // allow only spell without cooldown > duration
                    int32 cooldown = GetSpellRecoveryTime(spellInfo);
                    if (cooldown >= 0 && duration >= 0 && cooldown > duration)
                        continue;
                }
            }
            else
            {
                // just ignore non-combat spells
                if (IsNonCombatSpell(spellInfo))
                    continue;
            }

            Spell *spell = new Spell(m_creature, spellInfo, false, 0);

            // Fix to allow pets on STAY to autocast
            if (me->getVictim() && _CanAttack(me->getVictim()) && spell->CanAutoCast(me->getVictim()))
            {
                targetSpellStore.push_back(std::make_pair<Unit*, Spell*>(m_creature->getVictim(), spell));
                continue;
            }
            else
            {
                bool spellUsed = false;
                for (std::set<uint64>::const_iterator tar = m_AllySet.begin(); tar != m_AllySet.end(); ++tar)
                {
                    Unit* Target = ObjectAccessor::GetUnit(*m_creature,*tar);
//.........这里部分代码省略.........

void PetAI::UpdateAI(const uint32 diff)
{
    if (!me->isAlive())
        return;

    Unit* owner = me->GetCharmerOrOwner();

    if (m_updateAlliesTimer <= diff)
        // UpdateAllies self set update timer
        UpdateAllies();
    else
        m_updateAlliesTimer -= diff;

    // me->getVictim() can't be used for check in case stop fighting, me->getVictim() clear at Unit death etc.
    if (me->getVictim())
    {
        // is only necessary to stop casting, the pet must not exit combat
        if (me->getVictim()->HasBreakableByDamageCrowdControlAura(me))
        {
            me->InterruptNonMeleeSpells(false);
            return;
        }

        if (_needToStop())
        {
            sLog->outStaticDebug("Pet AI stopped attacking [guid=%u]", me->GetGUIDLow());
            _stopAttack();
            return;
        }

        DoMeleeAttackIfReady();
    }
    else if (owner && me->GetCharmInfo()) //no victim
    {
        Unit* nextTarget = SelectNextTarget();

        if (me->HasReactState(REACT_PASSIVE))
            _stopAttack();
        else if (nextTarget)
            AttackStart(nextTarget);
        else
            HandleReturnMovement();
    }
    else if (owner && !me->HasUnitState(UNIT_STATE_FOLLOW)) // no charm info and no victim
        me->GetMotionMaster()->MoveFollow(owner, PET_FOLLOW_DIST, me->GetFollowAngle());

    if (!me->GetCharmInfo())
        return;

    // Autocast (casted only in combat or persistent spells in any state)
    if (!me->HasUnitState(UNIT_STATE_CASTING))
    {
        typedef std::vector<std::pair<Unit*, Spell*> > TargetSpellList;
        TargetSpellList targetSpellStore;

        for (uint8 i = 0; i < me->GetPetAutoSpellSize(); ++i)
        {
            uint32 spellID = me->GetPetAutoSpellOnPos(i);
            if (!spellID)
                continue;

            SpellInfo const* spellInfo = sSpellMgr->GetSpellInfo(spellID);
            if (!spellInfo)
                continue;

            // Check global cooldown
            if (me->GetCharmInfo() && me->GetCharmInfo()->GetGlobalCooldownMgr().HasGlobalCooldown(spellInfo))
                continue;

            // Check spell cooldown
            if (me->HasSpellCooldown(spellInfo->Id))
                continue;

            // Check if pet is in combat and if spell can be cast
            if (me->isInCombat() && !spellInfo->CanBeUsedInCombat())
                continue;

            // Prevent spells like Furious Howl from constantly casting out of
            //  combat when the cooldown is up
            if (!me->isInCombat() && !spellInfo->NeedsToBeTriggeredByCaster())
                continue;

            // We have a spell we can cast, let's pick a target
            if (spellInfo->IsPositive())
            {
                // These would be buff spells like Furious Howl, Consume Shadows, etc.
                Spell* spell = new Spell(me, spellInfo, TRIGGERED_NONE, 0);

                bool spellUsed = false;
                for (std::set<uint64>::const_iterator tar = m_AllySet.begin(); tar != m_AllySet.end(); ++tar)
                {
                    Unit* target = ObjectAccessor::GetUnit(*me, *tar);

                    if (!target)
                        continue;

                    if (spell->CanAutoCast(target))
                    {
                        targetSpellStore.push_back(std::make_pair<Unit*, Spell*>(target, spell));
                        spellUsed = true;
//.........这里部分代码省略.........

void PetAI::UpdateAI(const uint32 diff)
{
    if (!me->isAlive())
        return;

    Unit* owner = me->GetCharmerOrOwner();

    if (m_updateAlliesTimer <= diff)
        // UpdateAllies self set update timer
        UpdateAllies();
    else
        m_updateAlliesTimer -= diff;

    // me->getVictim() can't be used for check in case stop fighting, me->getVictim() clear at Unit death etc.
    if (me->getVictim())
    {
        // is only necessary to stop casting, the pet must not exit combat
        if (me->getVictim()->HasBreakableByDamageCrowdControlAura())
        {
            me->InterruptNonMeleeSpells(false);
            return;
        }

        if (_needToStop())
        {
            sLog->outStaticDebug("Pet AI stopped attacking [guid=%u]", me->GetGUIDLow());
            _stopAttack();
            return;
        }

        DoMeleeAttackIfReady();
    }
    else if (owner && me->GetCharmInfo()) //no victim
    {
        Unit* nextTarget = SelectNextTarget();

        if (me->HasReactState(REACT_PASSIVE))
            _stopAttack();
        else if (nextTarget)
            AttackStart(nextTarget);
        else
            HandleReturnMovement();
    }
    else if (owner && !me->HasUnitState(UNIT_STATE_FOLLOW)) // no charm info and no victim
        me->GetMotionMaster()->MoveFollow(owner, PET_FOLLOW_DIST, me->GetFollowAngle());

    if (!me->GetCharmInfo())
        return;

    // Autocast (casted only in combat or persistent spells in any state)
    if (!me->HasUnitState(UNIT_STATE_CASTING))
    {
        typedef std::vector<std::pair<Unit*, Spell*> > TargetSpellList;
        TargetSpellList targetSpellStore;

        for (uint8 i = 0; i < me->GetPetAutoSpellSize(); ++i)
        {
            uint32 spellID = me->GetPetAutoSpellOnPos(i);
            if (!spellID)
                continue;

            SpellInfo const* spellInfo = sSpellMgr->GetSpellInfo(spellID);
            if (!spellInfo)
                continue;

            if (me->GetCharmInfo() && me->GetCharmInfo()->GetGlobalCooldownMgr().HasGlobalCooldown(spellInfo))
                continue;

            if (spellInfo->IsPositive())
            {
                // non combat spells allowed
                // only pet spells have IsNonCombatSpell and not fit this reqs:
                // Consume Shadows, Lesser Invisibility, so ignore checks for its
                if (spellInfo->CanBeUsedInCombat())
                {
                    // allow only spell without spell cost or with spell cost but not duration limit
                    int32 duration = spellInfo->GetDuration();
                    if ((spellInfo->ManaCost || spellInfo->ManaCostPercentage || spellInfo->ManaPerSecond) && duration > 0)
                        continue;

                    // allow only spell without cooldown > duration
                    int32 cooldown = spellInfo->GetRecoveryTime();
                    if (cooldown >= 0 && duration >= 0 && cooldown > duration)
                        continue;
                }

                Spell* spell = new Spell(me, spellInfo, TRIGGERED_NONE, 0);

                bool spellUsed = false;
                for (std::set<uint64>::const_iterator tar = m_AllySet.begin(); tar != m_AllySet.end(); ++tar)
                {
                    Unit* target = ObjectAccessor::GetUnit(*me, *tar);

                    //only buff targets that are in combat, unless the spell can only be cast while out of combat
                    if (!target)
                        continue;

                    if (spell->CanAutoCast(target))
                    {
                        targetSpellStore.push_back(std::make_pair<Unit*, Spell*>(target, spell));
//.........这里部分代码省略.........

void PetAI::UpdateAI(uint32 diff)
{
    if (!me->IsAlive() || !me->GetCharmInfo())
        return;

    Unit* owner = me->GetCharmerOrOwner();

    if (m_updateAlliesTimer <= diff)
        // UpdateAllies self set update timer
        UpdateAllies();
    else
        m_updateAlliesTimer -= diff;

    if (me->GetVictim() && me->GetVictim()->IsAlive())
    {
        // is only necessary to stop casting, the pet must not exit combat
        if (me->GetVictim()->HasBreakableByDamageCrowdControlAura(me))
        {
            me->InterruptNonMeleeSpells(false);
            return;
        }

        if (_needToStop())
        {
            ;//sLog->outStaticDebug("Pet AI stopped attacking [guid=%u]", me->GetGUIDLow());
            _stopAttack();
            return;
        }

        // Check before attacking to prevent pets from leaving stay position
        if (me->GetCharmInfo()->HasCommandState(COMMAND_STAY))
        {
            if (me->GetCharmInfo()->IsCommandAttack() || (me->GetCharmInfo()->IsAtStay() && me->IsWithinMeleeRange(me->GetVictim())))
                _doMeleeAttack();
        }
        else
            _doMeleeAttack();
    }
    else if (!me->GetCharmInfo() || (!me->GetCharmInfo()->GetForcedSpell() && !me->HasUnitState(UNIT_STATE_CASTING)))
    {
        if (me->HasReactState(REACT_AGGRESSIVE) || me->GetCharmInfo()->IsAtStay())
        {
            // Every update we need to check targets only in certain cases
            // Aggressive - Allow auto select if owner or pet don't have a target
            // Stay - Only pick from pet or owner targets / attackers so targets won't run by
            //   while chasing our owner. Don't do auto select.
            // All other cases (ie: defensive) - Targets are assigned by AttackedBy(), OwnerAttackedBy(), OwnerAttacked(), etc.
            Unit* nextTarget = SelectNextTarget(me->HasReactState(REACT_AGGRESSIVE));

            if (nextTarget)
                AttackStart(nextTarget);
            else
                HandleReturnMovement();
        }
        else
            HandleReturnMovement();
    }

    // xinef: charm info must be always available
    if (!me->GetCharmInfo())
        return;

    // Autocast (casted only in combat or persistent spells in any state)
    if (!me->HasUnitState(UNIT_STATE_CASTING))
    {
        if (owner && owner->GetTypeId() == TYPEID_PLAYER && me->GetCharmInfo()->GetForcedSpell() && me->GetCharmInfo()->GetForcedTarget())
        {
            owner->ToPlayer()->GetSession()->HandlePetActionHelper(me, me->GetGUID(), abs(me->GetCharmInfo()->GetForcedSpell()), ACT_ENABLED, me->GetCharmInfo()->GetForcedTarget());

            // xinef: if spell was casted properly and we are in passive mode, handle return
            if (!me->GetCharmInfo()->GetForcedSpell() && me->HasReactState(REACT_PASSIVE))
            {
                if (me->HasUnitState(UNIT_STATE_CASTING))
                {
                    me->GetMotionMaster()->Clear(false);
                    me->StopMoving();
                }
                else
                    _stopAttack();
            }
            return;
        }

        // xinef: dont allow ghouls to cast spells below 75 energy
        if (me->IsPet() && me->ToPet()->IsPetGhoul() && me->GetPower(POWER_ENERGY) < 75)
            return;

        typedef std::vector<std::pair<Unit*, Spell*> > TargetSpellList;
        TargetSpellList targetSpellStore;

        for (uint8 i = 0; i < me->GetPetAutoSpellSize(); ++i)
        {
            uint32 spellID = me->GetPetAutoSpellOnPos(i);
            if (!spellID)
                continue;

            SpellInfo const* spellInfo = sSpellMgr->GetSpellInfo(spellID);
            if (!spellInfo)
                continue;

//.........这里部分代码省略.........

void PetAI::UpdateAI(const uint32 diff)
{
    if (!m_creature->isAlive())
        return;

    Unit* owner = m_creature->GetCharmerOrOwner();
    Unit* victim = m_creature->getVictim();

    if (m_updateAlliesTimer <= diff)
        // UpdateAllies self set update timer
        UpdateAllies();
    else
        m_updateAlliesTimer -= diff;

    if (inCombat && (!victim || (m_creature->IsPet() && ((Pet*)m_creature)->GetModeFlags() & PET_MODE_DISABLE_ACTIONS)))
        _stopAttack();

    if (((Pet*)m_creature)->GetIsRetreating())
    {
        if (!owner->_IsWithinDist(m_creature, (PET_FOLLOW_DIST * 2), true))
        {
            if (!m_creature->hasUnitState(UNIT_STAT_FOLLOW))
                m_creature->GetMotionMaster()->MoveFollow(owner, PET_FOLLOW_DIST, PET_FOLLOW_ANGLE);

            return;
        }
        else
           ((Pet*)m_creature)->SetIsRetreating();
    }
    else if (((Pet*)m_creature)->GetSpellOpener() != 0) // have opener stored
    {
        uint32 minRange = ((Pet*)m_creature)->GetSpellOpenerMinRange();

        if (!(victim = m_creature->getVictim())
            || (minRange != 0 && m_creature->IsWithinDistInMap(victim, minRange)))
            ((Pet*)m_creature)->SetSpellOpener();
        else if (m_creature->IsWithinDistInMap(victim, ((Pet*)m_creature)->GetSpellOpenerMaxRange()) && m_creature->IsWithinLOSInMap(victim))
        {
            // stop moving
            m_creature->clearUnitState(UNIT_STAT_MOVING);

            // auto turn to target
            m_creature->SetInFront(victim);

            if (victim->GetTypeId() == TYPEID_PLAYER)
                m_creature->SendCreateUpdateToPlayer((Player*)victim);

            if (owner->GetTypeId() == TYPEID_PLAYER)
                m_creature->SendCreateUpdateToPlayer((Player*)owner);

            uint32 spell_id = ((Pet*)m_creature)->GetSpellOpener();
            SpellEntry const* spellInfo = sSpellStore.LookupEntry(spell_id);

            Spell* spell = new Spell(m_creature, spellInfo, false);

            SpellCastResult result = spell->CheckPetCast(victim);

            if (result == SPELL_CAST_OK)
            {
                m_creature->AddCreatureSpellCooldown(spell_id);

                spell->SpellStart(&(spell->m_targets));
            }
            else
                delete spell;

            ((Pet*)m_creature)->SetSpellOpener();
        }

        else
            return;
    }
    // Autocast (casted only in combat or persistent spells in any state)
    else if (!m_creature->IsNonMeleeSpellCasted(false))
    {
        typedef std::vector<std::pair<Unit*, Spell*> > TargetSpellList;
        TargetSpellList targetSpellStore;

        for (uint8 i = 0; i < m_creature->GetPetAutoSpellSize(); ++i)
        {
            uint32 spellID = m_creature->GetPetAutoSpellOnPos(i);
            if (!spellID)
                continue;

            SpellEntry const* spellInfo = sSpellStore.LookupEntry(spellID);
            if (!spellInfo)
                continue;

            if (m_creature->GetCharmInfo() && m_creature->GetCharmInfo()->GetGlobalCooldownMgr().HasGlobalCooldown(spellInfo))
                continue;

            // ignore some combinations of combat state and combat/noncombat spells
            if (!inCombat)
            {
                // ignore attacking spells, and allow only self/around spells
                if (!IsPositiveSpell(spellInfo->Id))
                    continue;

                // non combat spells allowed
                // only pet spells have IsNonCombatSpell and not fit this reqs:
//.........这里部分代码省略.........

void PetAI::UpdateAI(const uint32 diff)
{
    if (!m_creature->isAlive() || !m_creature->GetCharmInfo())
        return;

    Unit* owner = m_creature->GetCharmerOrOwner();

    if (m_updateAlliesTimer <= diff)
        // UpdateAllies self set update timer
        UpdateAllies();
    else
        m_updateAlliesTimer -= diff;

    // First checking if we have some taunt on us
    Unit* tauntTarget = NULL;
    const Unit::AuraList& tauntAuras = m_creature->GetAurasByType(SPELL_AURA_MOD_TAUNT);
    if (!tauntAuras.empty())
    {
        Unit* caster = NULL;

        // Auras are pushed_back, last caster will be on the end
        Unit::AuraList::const_iterator aura = tauntAuras.end();
        while (aura != tauntAuras.begin())
        {
            --aura;
            caster = (*aura)->GetCaster();
            if (caster && caster->isTargetableForAttack())
            {
                tauntTarget = caster;
                break;
            }
        }

        if (tauntTarget)
            DoAttack(tauntTarget, true);
    }

    if (m_creature->getVictim() && m_creature->getVictim()->isAlive())
    {
        
        if (_needToStop())
        {
            _stopAttack();
            return;
        }

        if (hasMelee)
        {
            // Check before attacking to prevent pets from leaving stay position
            bool attacked = false;
            if (m_creature->GetCharmInfo()->HasCommandState(COMMAND_STAY))
            {
                if (m_creature->GetCharmInfo()->IsCommandAttack() || (m_creature->GetCharmInfo()->IsAtStay() && m_creature->CanReachWithMeleeAttack(m_creature->getVictim())))
                    attacked = DoMeleeAttackIfReady();
            }
            else
                attacked = DoMeleeAttackIfReady();

            if (attacked && owner)
                if (Unit* v = m_creature->getVictim()) // Victim may have died between
                    owner->SetInCombatWith(v);
        }
    }
    else
    {
        if (m_creature->HasReactState(REACT_AGGRESSIVE) || m_creature->GetCharmInfo()->IsAtStay())
        {
            // Every update we need to check targets only in certain cases
            // Aggressive - Allow auto select if owner or pet don't have a target
            // Stay - Only pick from pet or owner targets / attackers so targets won't run by
            //   while chasing our owner. Don't do auto select.
            // All other cases (ie: defensive) - Targets are assigned by AttackedBy(), OwnerAttackedBy(), OwnerAttacked(), etc.
            Unit* nextTarget = SelectNextTarget(m_creature->HasReactState(REACT_AGGRESSIVE));

            if (nextTarget)
                AttackStart(nextTarget);
            else
                HandleReturnMovement();
        }
        else
            HandleReturnMovement();
    }

    // Autocast (casted only in combat or persistent spells in any state)
    if (!m_creature->IsNonMeleeSpellCasted(false))
    {
        typedef std::vector<std::pair<Unit*, Spell*> > TargetSpellList;
        TargetSpellList targetSpellStore;

        for (uint8 i = 0; i < m_creature->GetPetAutoSpellSize(); ++i)
        {
            uint32 spellID = m_creature->GetPetAutoSpellOnPos(i);
            if (!spellID)
                continue;

            SpellEntry const *spellInfo = sSpellMgr.GetSpellEntry(spellID);
            if (!spellInfo)
                continue;

            if (m_creature->GetGlobalCooldownMgr().HasGlobalCooldown(spellInfo))
//.........这里部分代码省略.........

void PetAI::UpdateAI(uint32 diff)
{
    if (!me->IsAlive() || !me->GetCharmInfo())
        return;

    Unit* owner = me->GetCharmerOrOwner();

    if (_updateAlliesTimer <= diff)
        // UpdateAllies self set update timer
        UpdateAllies();
    else
        _updateAlliesTimer -= diff;

    if (me->GetVictim() && me->EnsureVictim()->IsAlive())
    {
        // is only necessary to stop casting, the pet must not exit combat
        if (!me->GetCurrentSpell(CURRENT_CHANNELED_SPELL) && // ignore channeled spells (Pin, Seduction)
            me->EnsureVictim()->HasBreakableByDamageCrowdControlAura(me))
        {
            me->InterruptNonMeleeSpells(false);
            return;
        }

        if (NeedToStop())
        {
            TC_LOG_TRACE("scripts.ai.petai", "PetAI::UpdateAI: AI stopped attacking %s", me->GetGUID().ToString().c_str());
            StopAttack();
            return;
        }

        // Check before attacking to prevent pets from leaving stay position
        if (me->GetCharmInfo()->HasCommandState(COMMAND_STAY))
        {
            if (me->GetCharmInfo()->IsCommandAttack() || (me->GetCharmInfo()->IsAtStay() && me->IsWithinMeleeRange(me->GetVictim())))
                DoMeleeAttackIfReady();
        }
        else
            DoMeleeAttackIfReady();
    }
    else
    {
        if (me->HasReactState(REACT_AGGRESSIVE) || me->GetCharmInfo()->IsAtStay())
        {
            // Every update we need to check targets only in certain cases
            // Aggressive - Allow auto select if owner or pet don't have a target
            // Stay - Only pick from pet or owner targets / attackers so targets won't run by
            //   while chasing our owner. Don't do auto select.
            // All other cases (ie: defensive) - Targets are assigned by DamageTaken(), OwnerAttackedBy(), OwnerAttacked(), etc.
            Unit* nextTarget = SelectNextTarget(me->HasReactState(REACT_AGGRESSIVE));

            if (nextTarget)
                AttackStart(nextTarget);
            else
                HandleReturnMovement();
        }
        else
            HandleReturnMovement();
    }

    // Autocast (cast only in combat or persistent spells in any state)
    if (!me->HasUnitState(UNIT_STATE_CASTING))
    {
        TargetSpellList targetSpellStore;

        for (uint8 i = 0; i < me->GetPetAutoSpellSize(); ++i)
        {
            uint32 spellID = me->GetPetAutoSpellOnPos(i);
            if (!spellID)
                continue;

            SpellInfo const* spellInfo = sSpellMgr->GetSpellInfo(spellID);
            if (!spellInfo)
                continue;

            if (me->GetSpellHistory()->HasGlobalCooldown(spellInfo))
                continue;

            // check spell cooldown
            if (!me->GetSpellHistory()->IsReady(spellInfo))
                continue;

            if (spellInfo->IsPositive())
            {
                if (spellInfo->CanBeUsedInCombat())
                {
                    // Check if we're in combat or commanded to attack
                    if (!me->IsInCombat() && !me->GetCharmInfo()->IsCommandAttack())
                        continue;
                }

                Spell* spell = new Spell(me, spellInfo, TRIGGERED_NONE);
                bool spellUsed = false;

                // Some spells can target enemy or friendly (DK Ghoul's Leap)
                // Check for enemy first (pet then owner)
                Unit* target = me->getAttackerForHelper();
                if (!target && owner)
                    target = owner->getAttackerForHelper();

                if (target)
//.........这里部分代码省略.........

void PetAI::UpdateAI(const uint32 diff)
{
    if (!m_creature->isAlive())
        return;

    Unit* owner = m_creature->GetCharmerOrOwner();

    if (m_updateAlliesTimer <= diff)
        // UpdateAllies self set update timer
        UpdateAllies();
    else
        m_updateAlliesTimer -= diff;

    if (inCombat && (!m_creature->getVictim() || (m_creature->IsPet() && m_creature->GetCharmInfo()->HasState(CHARM_STATE_ACTION,ACTIONS_DISABLE))))
        _stopAttack();

    // i_pet.getVictim() can't be used for check in case stop fighting, i_pet.getVictim() clear at Unit death etc.
    if (m_creature->getVictim())
    {
        bool meleeReach = m_creature->CanReachWithMeleeAttack(m_creature->getVictim());

        if (_needToStop())
        {
            DEBUG_FILTER_LOG(LOG_FILTER_AI_AND_MOVEGENSS, "PetAI (guid = %u) is stopping attack.", m_creature->GetGUIDLow());
            _stopAttack();
            return;
        }
        else if (!m_creature->getVictim()->isAlive())        // Stop attack if target dead
        {
            m_creature->InterruptNonMeleeSpells(false);
            _stopAttack();
            return;
        }
        else if (m_creature->IsStopped() || meleeReach)
        {
            // required to be stopped cases
            if (m_creature->IsStopped() && m_creature->IsNonMeleeSpellCasted(false))