C++ IsNonCombatSpell函数代码示例

uint32 PetAI::GetSpellType(PetAutoSpellType type)
{
    if (type >= PET_SPELL_MAX || m_spellType[type].empty())
        return 0;

    std::vector<uint32> tmpSet;

    for (Unit::SpellIdSet::const_iterator itr = m_spellType[type].begin(); itr != m_spellType[type].end(); ++itr)
    {
        uint32 _spellID = *itr;
        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;

        if (IsInCombat() && IsNonCombatSpell(spellInfo))
            continue;

        if (!IsInCombat() && IsPositiveSpell(spellInfo) && !IsNonCombatSpell(spellInfo))
        {
            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;
        }

        tmpSet.push_back(_spellID);
    }

    if (tmpSet.empty())
        return 0;
    else
        return tmpSet[urand(0, tmpSet.size() - 1)];
}

void WorldSession::HandleCastSpellOpcode(WorldPacket& recvPacket)
{
    uint32 spellId;
    uint8  cast_count;
    recvPacket >> spellId;
    recvPacket >> cast_count;

    DEBUG_LOG("WORLD: got cast spell packet, spellId - %u, cast_count: %u data length = %i",
              spellId, cast_count, recvPacket.size());

    SpellEntry const* spellInfo = sSpellStore.LookupEntry(spellId);

    if (!spellInfo)
    {
        sLog.outError("WORLD: unknown spell id %u", spellId);
        return;
    }

    // not have spell or spell passive and not casted by client
    if (!_player->HasSpell (spellId) || IsPassiveSpell(spellId))
    {
        //cheater? kick? ban?
        return;
    }

    // can't use our own spells when we're in possession of another unit,
    if (_player->isPossessing())
        return;

    // client provided targets
    SpellCastTargets targets;

    recvPacket >> targets.ReadForCaster(_player);

    Unit* target = targets.getUnitTarget();
    if (target) // auto-selection buff level base at target level (in spellInfo)
    {
        // if rank not found then function return NULL but in explicit cast case original spell can be casted and later failed with appropriate error message
        if (SpellEntry const* actualSpellInfo = sSpellMgr.SelectAuraRankForPlayerLevel(spellInfo, target->getLevel()))
            spellInfo = actualSpellInfo;
    }

    if (spellInfo->AttributesEx2 & SPELL_ATTR2_AUTOREPEAT_FLAG)
    {
        if (_player->GetCurrentSpell(CURRENT_AUTOREPEAT_SPELL) && _player->GetCurrentSpell(CURRENT_AUTOREPEAT_SPELL)->m_spellInfo->Id == spellInfo->Id)
            return;
    }

    // When casting a combat spell the unit has to be flagged as initiating combat
    // No need to check if spell is self-cast because combat spells can only be cast on self with commands
    if (target && !IsNonCombatSpell(spellInfo))
        _player->setInitiatingCombat(true);

    Spell* spell = new Spell(_player, spellInfo, false);
    spell->m_cast_count = cast_count;                       // set count of casts
    spell->prepare(&targets);
}

void WorldSession::HandleUseItemOpcode(WorldPacket& recvPacket)
{
    // TODO: add targets.read() check
    CHECK_PACKET_SIZE(recvPacket,1+1+1+1+8);

    Player* pUser = _player;
    uint8 bagIndex, slot;
    uint8 spell_count;                                      // number of spells at item, not used
    uint8 cast_count;                                       // next cast if exists (single or not)
    uint64 item_guid;

    recvPacket >> bagIndex >> slot >> spell_count >> cast_count >> item_guid;

    Item *pItem = pUser->GetItemByPos(bagIndex, slot);
    if(!pItem)
    {
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, NULL, NULL );
        return;
    }

    if(pItem->GetGUID() != item_guid)
    {
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, NULL, NULL );
        return;
    }

    sLog.outDetail("WORLD: CMSG_USE_ITEM packet, bagIndex: %u, slot: %u, spell_count: %u , cast_count: %u, Item: %u, data length = %i", bagIndex, slot, spell_count, cast_count, pItem->GetEntry(), recvPacket.size());

    ItemPrototype const *proto = pItem->GetProto();
    if(!proto)
    {
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, pItem, NULL );
        return;
    }

    // some item classes can be used only in equipped state
    if(proto->InventoryType != INVTYPE_NON_EQUIP && !pItem->IsEquipped())
    {
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, pItem, NULL );
        return;
    }

    uint8 msg = pUser->CanUseItem(pItem);
    if( msg != EQUIP_ERR_OK )
    {
        pUser->SendEquipError( msg, pItem, NULL );
        return;
    }

    // only allow conjured consumable, bandage, poisons (all should have the 2^21 item flag set in DB)
    if( proto->Class == ITEM_CLASS_CONSUMABLE &&
        !(proto->Flags & ITEM_FLAGS_USEABLE_IN_ARENA) &&
        pUser->InArena())
    {
        pUser->SendEquipError(EQUIP_ERR_NOT_DURING_ARENA_MATCH,pItem,NULL);
        return;
    }

    if (pUser->isInCombat())
    {
        for(int i = 0; i < 5; ++i)
        {
            if (SpellEntry const *spellInfo = sSpellStore.LookupEntry(proto->Spells[i].SpellId))
            {
                if (IsNonCombatSpell(spellInfo))
                {
                    pUser->SendEquipError(EQUIP_ERR_NOT_IN_COMBAT,pItem,NULL);
                    return;
                }
            }
        }
    }

    // check also  BIND_WHEN_PICKED_UP and BIND_QUEST_ITEM for .additem or .additemset case by GM (not binded at adding to inventory)
    if( pItem->GetProto()->Bonding == BIND_WHEN_USE || pItem->GetProto()->Bonding == BIND_WHEN_PICKED_UP || pItem->GetProto()->Bonding == BIND_QUEST_ITEM )
    {
        if (!pItem->IsSoulBound())
        {
            pItem->SetState(ITEM_CHANGED, pUser);
            pItem->SetBinding( true );
        }
    }

    SpellCastTargets targets;
    if(!targets.read(&recvPacket, pUser))
        return;

    //Note: If script stop casting it must send appropriate data to client to prevent stuck item in gray state.
    if(!Script->ItemUse(pUser,pItem,targets))
    {
        // no script or script not process request by self

        // special learning case
        if(pItem->GetProto()->Spells[0].SpellId==SPELL_ID_GENERIC_LEARN)
        {
            uint32 learning_spell_id = pItem->GetProto()->Spells[1].SpellId;

            SpellEntry const *spellInfo = sSpellStore.LookupEntry(SPELL_ID_GENERIC_LEARN);
            if(!spellInfo)
            {
//.........这里部分代码省略.........

void WorldSession::HandleUseItemOpcode(WorldPacket& recvPacket)
{
    uint8 bagIndex, slot;
    uint8 spell_count;                                      // number of spells at item, not used

    recvPacket >> bagIndex >> slot >> spell_count;

    // TODO: add targets.read() check
    Player* pUser = _player;

    // ignore for remote control state
    if (!pUser->IsSelfMover())
    {
        recvPacket.rpos(recvPacket.wpos());                 // prevent spam at not read packet tail
        return;
    }

    Item* pItem = pUser->GetItemByPos(bagIndex, slot);
    if (!pItem)
    {
        recvPacket.rpos(recvPacket.wpos());                 // prevent spam at not read packet tail
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, nullptr, nullptr);
        return;
    }

    DETAIL_LOG("WORLD: CMSG_USE_ITEM packet, bagIndex: %u, slot: %u, spell_count: %u , Item: %u, data length = %u", bagIndex, slot, spell_count, pItem->GetEntry(), (uint32)recvPacket.size());

    ItemPrototype const* proto = pItem->GetProto();
    if (!proto)
    {
        recvPacket.rpos(recvPacket.wpos());                 // prevent spam at not read packet tail
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, pItem, nullptr);
        return;
    }

    // some item classes can be used only in equipped state
    if (proto->InventoryType != INVTYPE_NON_EQUIP && !pItem->IsEquipped())
    {
        recvPacket.rpos(recvPacket.wpos());                 // prevent spam at not read packet tail
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, pItem, nullptr);
        return;
    }

    InventoryResult msg = pUser->CanUseItem(pItem);
    if (msg != EQUIP_ERR_OK)
    {
        recvPacket.rpos(recvPacket.wpos());                 // prevent spam at not read packet tail
        pUser->SendEquipError(msg, pItem, nullptr);
        return;
    }

    // not allow use item from trade (cheat way only)
    if (pItem->IsInTrade())
    {
        recvPacket.rpos(recvPacket.wpos());                 // prevent spam at not read packet tail
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, pItem, nullptr);
        return;
    }

    if (pUser->isInCombat())
    {
        for (int i = 0; i < MAX_ITEM_PROTO_SPELLS; ++i)
        {
            if (SpellEntry const* spellInfo = sSpellStore.LookupEntry(proto->Spells[i].SpellId))
            {
                if (IsNonCombatSpell(spellInfo))
                {
                    recvPacket.rpos(recvPacket.wpos());     // prevent spam at not read packet tail
                    pUser->SendEquipError(EQUIP_ERR_NOT_IN_COMBAT, pItem, nullptr);
                    return;
                }
            }
        }
    }

    // check also  BIND_WHEN_PICKED_UP and BIND_QUEST_ITEM for .additem or .additemset case by GM (not binded at adding to inventory)
    if (pItem->GetProto()->Bonding == BIND_WHEN_USE || pItem->GetProto()->Bonding == BIND_WHEN_PICKED_UP || pItem->GetProto()->Bonding == BIND_QUEST_ITEM)
    {
        if (!pItem->IsSoulBound())
        {
            pItem->SetState(ITEM_CHANGED, pUser);
            pItem->SetBinding(true);
        }
    }

    SpellCastTargets targets;

    recvPacket >> targets.ReadForCaster(pUser);

    targets.Update(pUser);

    if (!pItem->IsTargetValidForItemUse(targets.getUnitTarget()))
    {
        // free gray item after use fail
        pUser->SendEquipError(EQUIP_ERR_NONE, pItem, nullptr);

        // search spell for spell error
        uint32 spellid = 0;
        for (int i = 0; i < MAX_ITEM_PROTO_SPELLS; ++i)
        {
//.........这里部分代码省略.........

void WorldSession::HandleUseItemOpcode(WorldPacket& recvPacket)
{
    // TODO: add targets.read() check
    Player* pUser = _player;
    uint8 bagIndex, slot;
    uint8 spell_count;                                      // number of spells at item, not used

    recvPacket >> bagIndex >> slot >> spell_count;

    Item *pItem = pUser->GetItemByPos(bagIndex, slot);
    if(!pItem)
    {
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, NULL, NULL );
        return;
    }

    sLog.outDetail("WORLD: CMSG_USE_ITEM packet, bagIndex: %u, slot: %u, spell_count: %u , Item: %u, data length = %i", bagIndex, slot, spell_count, pItem->GetEntry(), (uint32)recvPacket.size());

    ItemPrototype const *proto = pItem->GetProto();
    if(!proto)
    {
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, pItem, NULL );
        return;
    }

    // some item classes can be used only in equipped state
    if(proto->InventoryType != INVTYPE_NON_EQUIP && !pItem->IsEquipped())
    {
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, pItem, NULL );
        return;
    }

    uint8 msg = pUser->CanUseItem(pItem);
    if( msg != EQUIP_ERR_OK )
    {
        pUser->SendEquipError( msg, pItem, NULL );
        return;
    }

    if (pUser->isInCombat())
    {
        for(int i = 0; i < MAX_ITEM_PROTO_SPELLS; ++i)
        {
            if (SpellEntry const *spellInfo = sSpellStore.LookupEntry(proto->Spells[i].SpellId))
            {
                if (IsNonCombatSpell(spellInfo))
                {
                    pUser->SendEquipError(EQUIP_ERR_NOT_IN_COMBAT,pItem,NULL);
                    return;
                }
            }
        }
    }

    // check also  BIND_WHEN_PICKED_UP and BIND_QUEST_ITEM for .additem or .additemset case by GM (not binded at adding to inventory)
    if( pItem->GetProto()->Bonding == BIND_WHEN_USE || pItem->GetProto()->Bonding == BIND_WHEN_PICKED_UP || pItem->GetProto()->Bonding == BIND_QUEST_ITEM )
    {
        if (!pItem->IsSoulBound())
        {
            pItem->SetState(ITEM_CHANGED, pUser);
            pItem->SetBinding( true );
        }
    }

    SpellCastTargets targets;

    recvPacket >> targets.ReadForCaster(pUser);

    targets.Update(pUser);

    if (!pItem->IsTargetValidForItemUse(targets.getUnitTarget()))
    {
        // free gray item after use fail
        pUser->SendEquipError(EQUIP_ERR_NONE, pItem, NULL);

        // search spell for spell error
        uint32 spellid = 0;
        for(int i = 0; i < MAX_ITEM_PROTO_SPELLS; ++i)
        {
            if( proto->Spells[i].SpellTrigger == ITEM_SPELLTRIGGER_ON_USE || proto->Spells[i].SpellTrigger == ITEM_SPELLTRIGGER_ON_NO_DELAY_USE)
            {
                spellid = proto->Spells[i].SpellId;
                break;
            }
        }

        // send spell error
        if (SpellEntry const* spellInfo = sSpellStore.LookupEntry(spellid))
            Spell::SendCastResult(_player,spellInfo,SPELL_FAILED_BAD_TARGETS);
        return;
    }

    //Note: If script stop casting it must send appropriate data to client to prevent stuck item in gray state.
    if(!Script->ItemUse(pUser,pItem,targets))
    {
        // no script or script not process request by self

        // special learning case
        if(pItem->GetProto()->Spells[0].SpellId==SPELL_ID_GENERIC_LEARN)
        {
//.........这里部分代码省略.........

void PetAI::Reset()
{
    m_primaryTargetGuid.Clear();
    m_savedTargetGuid.Clear();
    m_attackDistanceRecheckTimer.SetInterval(TIME_INTERVAL_LOOK);
    m_attackDistanceRecheckTimer.Reset();
    m_updateAlliesTimer.SetInterval(ALLIES_UPDATE_TIME);
    m_updateAlliesTimer.Reset();
    UpdateAllies();

    for (uint8 i = PET_SPELL_PASSIVE; i < PET_SPELL_MAX; ++i)
        m_spellType[i].clear();

    m_AIType = PET_AI_PASSIVE;
    m_attackDistance  = 0.0f;
    float f_range   = 0.0f;

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

    uint32 spellsSize = m_creature->IsPet() ? ((Pet*)m_creature)->GetPetAutoSpellSize() : m_creature->GetPetAutoSpellSize();
    uint8 rangedDamageSpells = 0;
    uint8 meleeDamageSpells = 0;

    // classification for pet spells
    for (uint32 i = 0; i < spellsSize; ++i)
    {
        uint32 spellID = m_creature->IsPet() ? ((Pet*)m_creature)->GetPetAutoSpellOnPos(i) : m_creature->GetPetAutoSpellOnPos(i);
        if (!spellID)
            continue;

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

        if (IsPassiveSpell(spellInfo))
        {
            m_spellType[PET_SPELL_PASSIVE].insert(spellID);
            continue;
        }

        if (IsNonCombatSpell(spellInfo))
        {
            // Voidwalker Consume Shadows
            if (IsChanneledSpell(spellInfo))
                m_spellType[PET_SPELL_HEAL].insert(spellID);
            else
                m_spellType[PET_SPELL_NONCOMBAT].insert(spellID);
            continue;
        }

        // need more correct define this type
        if (IsSpellReduceThreat(spellInfo) || IsChanneledSpell(spellInfo))
        {
            m_spellType[PET_SPELL_DEFENCE].insert(spellID);
            continue;
        }

        // Voracious Appetite && Cannibalize && Carrion Feeder
        if (spellInfo->HasAttribute(SPELL_ATTR_ABILITY) && spellInfo->HasAttribute(SPELL_ATTR_EX2_ALLOW_DEAD_TARGET))
        {
            m_spellType[PET_SPELL_HEAL].insert(spellID);
            continue;
        }

        if (IsPositiveSpell(spellInfo) && IsSpellAppliesAura(spellInfo))
        {
            m_spellType[PET_SPELL_BUFF].insert(spellID);
            continue;
        }

        if (spellInfo->HasAttribute(SPELL_ATTR_EX_DISPEL_AURAS_ON_IMMUNITY))
        {
            m_spellType[PET_SPELL_FREEACTION].insert(spellID);
            continue;
        }

        // don't have SPELL_ATTR_EX_DISPEL_AURAS_ON_IMMUNITY !
        if (spellInfo->HasAttribute(SPELL_ATTR_EX_CANT_REFLECTED) ||
            spellInfo->HasAttribute(SPELL_ATTR_EX7_HAS_CHARGE_EFFECT))
        {
            m_spellType[PET_SPELL_ATTACKSTART].insert(spellID);
            continue;
        }

        if (IsSpellIncreaseThreat(spellInfo))
        {
            m_spellType[PET_SPELL_THREAT].insert(spellID);
            continue;
        }

        // all non-combat spells classified.
        switch (spellInfo->rangeIndex)
        {
            case SPELL_RANGE_IDX_COMBAT:
            {
                if (IsSpellCauseDamage(spellInfo))
                {
                    m_spellType[PET_SPELL_MELEE].insert(spellID);
                    ++meleeDamageSpells;
//.........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())
        _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_LOG("Pet AI stoped attacking [guid=%u]", m_creature->GetGUIDLow());
            _stopAttack();
            return;
        }
        else if (m_creature->IsStopped() || m_creature->IsWithinDistInMap(m_creature->getVictim(), ATTACK_DISTANCE))
        {
            // required to be stopped cases
            if (m_creature->IsStopped() && m_creature->IsNonMeleeSpellCasted(false))
            {
                if (m_creature->hasUnitState(UNIT_STAT_FOLLOW))
                    m_creature->InterruptNonMeleeSpells(false);
                else
                    return;
            }
            // not required to be stopped case
            else if (m_creature->isAttackReady() && m_creature->canReachWithAttack(m_creature->getVictim()))
            {
                m_creature->AttackerStateUpdate(m_creature->getVictim());

                m_creature->resetAttackTimer();

                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,0.0f);

                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);
            }
        }
    }

    if (m_creature->GetGlobalCooldown() == 0 && !m_creature->IsNonMeleeSpellCasted(false))
    {
        //Autocast
        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 (!inCombat)
            {
                if (!IsPositiveSpell(spellInfo->Id))
                    continue;
            }
            else
            {
                if (IsNonCombatSpell(spellInfo))
                    continue;
            }

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

            if (inCombat && !m_creature->hasUnitState(UNIT_STAT_FOLLOW) && spell->CanAutoCast(m_creature->getVictim()))
            {
                m_targetSpellStore.push_back(std::make_pair<Unit*, Spell*>(m_creature->getVictim(), spell));
                continue;
            }
//.........这里部分代码省略.........

void WorldSession::HandleUseItemOpcode(WorldPacket& recvPacket)
{
    // TODO: add targets.read() check
    CHECK_PACKET_SIZE(recvPacket,1+1+1+4+8+4+1);

    Player* pUser = _player;
    uint8 bagIndex, slot;
    uint8 unk_flags;                                        // flags (if 0x02 - some additional data are received)
    uint8 cast_count;                                       // next cast if exists (single or not)
    uint64 item_guid;
    uint32 glyphIndex;                                      // something to do with glyphs?
    uint32 spellid;                                         // casted spell id

    recvPacket >> bagIndex >> slot >> cast_count >> spellid >> item_guid >> glyphIndex >> unk_flags;

    Item *pItem = pUser->GetItemByPos(bagIndex, slot);
    if(!pItem)
    {
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, NULL, NULL );
        return;
    }

    if(pItem->GetGUID() != item_guid)
    {
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, NULL, NULL );
        return;
    }

    sLog.outDetail("WORLD: CMSG_USE_ITEM packet, bagIndex: %u, slot: %u, cast_count: %u, spellid: %u, Item: %u, glyphIndex: %u, unk_flags: %u, data length = %i", bagIndex, slot, cast_count, spellid, pItem->GetEntry(), glyphIndex, unk_flags, recvPacket.size());

    ItemPrototype const *proto = pItem->GetProto();
    if(!proto)
    {
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, pItem, NULL );
        return;
    }

    // some item classes can be used only in equipped state
    if(proto->InventoryType != INVTYPE_NON_EQUIP && !pItem->IsEquipped())
    {
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, pItem, NULL );
        return;
    }

    uint8 msg = pUser->CanUseItem(pItem);
    if( msg != EQUIP_ERR_OK )
    {
        pUser->SendEquipError( msg, pItem, NULL );
        return;
    }

    // only allow conjured consumable, bandage, poisons (all should have the 2^21 item flag set in DB)
    if( proto->Class == ITEM_CLASS_CONSUMABLE &&
        !(proto->Flags & ITEM_FLAGS_USEABLE_IN_ARENA) &&
        pUser->InArena())
    {
        pUser->SendEquipError(EQUIP_ERR_NOT_DURING_ARENA_MATCH,pItem,NULL);
        return;
    }

    if (pUser->isInCombat())
    {
        for(int i = 0; i < MAX_ITEM_PROTO_SPELLS; ++i)
        {
            if (SpellEntry const *spellInfo = sSpellStore.LookupEntry(proto->Spells[i].SpellId))
            {
                if (IsNonCombatSpell(spellInfo))
                {
                    pUser->SendEquipError(EQUIP_ERR_NOT_IN_COMBAT,pItem,NULL);
                    return;
                }
            }
        }
    }

    // check also  BIND_WHEN_PICKED_UP and BIND_QUEST_ITEM for .additem or .additemset case by GM (not binded at adding to inventory)
    if( pItem->GetProto()->Bonding == BIND_WHEN_USE || pItem->GetProto()->Bonding == BIND_WHEN_PICKED_UP || pItem->GetProto()->Bonding == BIND_QUEST_ITEM )
    {
        if (!pItem->IsSoulBound())
        {
            pItem->SetState(ITEM_CHANGED, pUser);
            pItem->SetBinding( true );
        }
    }

    SpellCastTargets targets;
    if(!targets.read(&recvPacket, pUser))
        return;

    //Note: If script stop casting it must send appropriate data to client to prevent stuck item in gray state.
    if(!Script->ItemUse(pUser,pItem,targets))
    {
        // no script or script not process request by self
        pUser->CastItemUseSpell(pItem,targets,cast_count,glyphIndex);
    }
}

void WorldSession::HandleUseItemOpcode(WorldPacket& recvPacket)
{
    uint8 bagIndex, slot;
    uint8 cast_flags;                                       // flags (if 0x02 - some additional data are received)
    uint8 cast_count;                                       // next cast if exists (single or not)
    ObjectGuid itemGuid;
    uint32 glyphIndex;                                      // something to do with glyphs?
    uint32 spellid;                                         // casted spell id

    recvPacket >> bagIndex >> slot >> cast_count >> spellid >> itemGuid >> glyphIndex >> cast_flags;

    // TODO: add targets.read() check
    Player* pUser = _player;

    // ignore for remote control state
    if (!pUser->IsSelfMover())
    {
        recvPacket.rpos(recvPacket.wpos());                 // prevent spam at not read packet tail
        return;
    }

    // reject fake data
    if (glyphIndex >= MAX_GLYPH_SLOT_INDEX)
    {
        recvPacket.rpos(recvPacket.wpos());                 // prevent spam at not read packet tail
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, nullptr, nullptr);
        return;
    }

    Item* pItem = pUser->GetItemByPos(bagIndex, slot);
    if (!pItem)
    {
        recvPacket.rpos(recvPacket.wpos());                 // prevent spam at not read packet tail
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, nullptr, nullptr);
        return;
    }

    if (pItem->GetObjectGuid() != itemGuid)
    {
        recvPacket.rpos(recvPacket.wpos());                 // prevent spam at not read packet tail
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, nullptr, nullptr);
        return;
    }

    DETAIL_LOG("WORLD: CMSG_USE_ITEM packet, bagIndex: %u, slot: %u, cast_count: %u, spellid: %u, Item: %u, glyphIndex: %u, unk_flags: %u, data length = %u", bagIndex, slot, cast_count, spellid, pItem->GetEntry(), glyphIndex, cast_flags, (uint32)recvPacket.size());

    ItemPrototype const* proto = pItem->GetProto();
    if (!proto)
    {
        recvPacket.rpos(recvPacket.wpos());                 // prevent spam at not read packet tail
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, pItem, nullptr);
        return;
    }

    // some item classes can be used only in equipped state
    if (proto->InventoryType != INVTYPE_NON_EQUIP && !pItem->IsEquipped())
    {
        recvPacket.rpos(recvPacket.wpos());                 // prevent spam at not read packet tail
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, pItem, nullptr);
        return;
    }

    InventoryResult msg = pUser->CanUseItem(pItem);
    if (msg != EQUIP_ERR_OK)
    {
        recvPacket.rpos(recvPacket.wpos());                 // prevent spam at not read packet tail
        pUser->SendEquipError(msg, pItem, nullptr);
        return;
    }

    // not allow use item from trade (cheat way only)
    if (pItem->IsInTrade())
    {
        recvPacket.rpos(recvPacket.wpos());                 // prevent spam at not read packet tail
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, pItem, nullptr);
        return;
    }

    // only allow conjured consumable, bandage, poisons (all should have the 2^21 item flag set in DB)
    if (proto->Class == ITEM_CLASS_CONSUMABLE &&
            !(proto->Flags & ITEM_FLAG_IGNORE_DEFAULT_ARENA_RESTRICTIONS) &&
            pUser->InArena())
    {
        recvPacket.rpos(recvPacket.wpos());                 // prevent spam at not read packet tail
        pUser->SendEquipError(EQUIP_ERR_NOT_DURING_ARENA_MATCH, pItem, nullptr);
        return;
    }

    if (pUser->isInCombat())
    {
        for (const auto& Spell : proto->Spells)
        {
            if (SpellEntry const* spellInfo = sSpellTemplate.LookupEntry<SpellEntry>(Spell.SpellId))
            {
                if (IsNonCombatSpell(spellInfo))
                {
                    recvPacket.rpos(recvPacket.wpos());     // prevent spam at not read packet tail
                    pUser->SendEquipError(EQUIP_ERR_NOT_IN_COMBAT, pItem, nullptr);
                    return;
                }
//.........这里部分代码省略.........

//.........这里部分代码省略.........

        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:
                // Consume Shadows, Lesser Invisibility, so ignore checks for its
                if (!IsNonCombatSpell(spellInfo))
                {
                    int32 duration = GetSpellDuration(spellInfo);
                    int32 cooldown = GetSpellRecoveryTime(spellInfo);

                    // allow only spell not on cooldown
                    if (cooldown != 0 && duration < cooldown)
                        continue;

                    // not allow instant kill autocasts as full health cost
                    if (IsSpellHaveEffect(spellInfo, SPELL_EFFECT_INSTAKILL))
                        continue;
                }
            }
            // just ignore non-combat spells
            else if (IsNonCombatSpell(spellInfo))
                continue;

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

            if (inCombat && !m_creature->hasUnitState(UNIT_STAT_FOLLOW) && spell->CanAutoCast(m_creature->getVictim()))
            {
                targetSpellStore.push_back(TargetSpellList::value_type(m_creature->getVictim(), spell));
                continue;
            }
            else
            {
                bool spellUsed = false;
                for (GuidSet::const_iterator tar = m_AllySet.begin(); tar != m_AllySet.end(); ++tar)
                {
                    Unit* Target = m_creature->GetMap()->GetUnit(*tar);

                    // only buff targets that are in combat, unless the spell can only be cast while out of combat

//.........这里部分代码省略.........
                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))
                continue;

            // check spell cooldown
            if (m_creature->HasSpellCooldown(spellInfo->Id))
                continue;

            if (IsPositiveSpell(spellInfo->Id))
            {
                if (!IsNonCombatSpell(spellInfo)) // Can be used in combat.
                {
                    /*
                    Spells handled here:
                        Dash (1850), Dive (23145), Furious Howl (24604), Tainted Blood (19478)
                        Blood Pact (6307), Fire Shield (11771), Sacrifice ...
                        Consume Shadows (17767)
                    */

                    // Warlock Sacrifice: do not auto cast if not in combat
                    bool castOnlyInCombat = IsSpellHaveEffect(spellInfo, SPELL_EFFECT_INSTAKILL);

                    if (!castOnlyInCombat)
                    {
                        int32 duration = GetSpellDuration(spellInfo);
                        int32 cooldown = GetSpellRecoveryTime(spellInfo);
                        // Keep this spell for when we will be in combat.
                        if (cooldown >= 0 && duration >= 0 && cooldown > duration)
                            castOnlyInCombat = true;
                    }
                    // 19478 - Tainted Blood, rank 1 enUS
                    if (spellInfo->SpellIconID == 153)
                        castOnlyInCombat = true;
                    // 2947 - Fire Shield, rank 1 enUS
                    // When set to auto-cast, the Imp will cast this on any party members within 30 yds if they receive a melee attack.
                    if (spellInfo->IsFitToFamily<SPELLFAMILY_WARLOCK, CF_WARLOCK_IMP_BUFFS>() && spellInfo->SpellVisual == 289)
                        castOnlyInCombat = false;
                    // Furious Howl: in combat only
                    if (IsSpellHaveAura(spellInfo, SPELL_AURA_MOD_DAMAGE_DONE))
                        castOnlyInCombat = true;
                    if (castOnlyInCombat && !m_creature->getVictim())
                        continue;
                }

void WorldSession::HandleUseItemOpcode(WorldPacket& recvPacket)
{
    // TODO: add targets.read() check
    CHECK_PACKET_SIZE(recvPacket,1+1+1);

    sLog.outDetail("WORLD: CMSG_USE_ITEM packet, data length = %i",recvPacket.size());

    Player* pUser = _player;
    uint8 bagIndex, slot, tmp3;

    recvPacket >> bagIndex >> slot >> tmp3;

    Item *pItem = pUser->GetItemByPos(bagIndex, slot);
    if(!pItem)
    {
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, NULL, NULL );
        return;
    }

    ItemPrototype const *proto = pItem->GetProto();
    if(!proto)
    {
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, pItem, NULL );
        return;
    }

    uint8 msg = pUser->CanUseItem(pItem);
    if( msg != EQUIP_ERR_OK )
    {
        pUser->SendEquipError( msg, pItem, NULL );
        return;
    }

    if (pUser->isInCombat())
    {
        for(int i = 0; i <5; ++i)
        {
            if (IsNonCombatSpell(proto->Spells[i].SpellId))
            {
                pUser->SendEquipError(EQUIP_ERR_NOT_IN_COMBAT,pItem,NULL);
                return;
            } 
        }
    }

    // check also  BIND_WHEN_PICKED_UP for .additem or .additemset case by GM (not binded at adding to inventory)
    if( pItem->GetProto()->Bonding == BIND_WHEN_USE || pItem->GetProto()->Bonding == BIND_WHEN_PICKED_UP)
    {
        if (!pItem->IsSoulBound())
        {
            pItem->SetState(ITEM_CHANGED, pUser);
            pItem->SetBinding( true );
        }
    }

    SpellCastTargets targets;
    if(!targets.read(&recvPacket, pUser))
        return;

    //Note: If script stop casting it must send appropriate data to client to prevent stuck item in gray state.
    if(!Script->ItemUse(pUser,pItem,targets))
    {
        // no script or script not process request by self

        // use triggered flag only for items with many spell casts and for not first cast
        int count = 0;

        for(int i = 0; i <5; ++i)
        {
            _Spell const& spellData = pItem->GetProto()->Spells[i];

            // no spell
            if(!spellData.SpellId)
                continue;

            // wrong triggering type
            if( spellData.SpellTrigger != ITEM_SPELLTRIGGER_ON_USE && spellData.SpellTrigger != ITEM_SPELLTRIGGER_ON_NO_DELAY_USE)
                continue;

            SpellEntry const *spellInfo = sSpellStore.LookupEntry(spellData.SpellId);
            if(!spellInfo)
            {
                sLog.outError("Item (Entry: %u) in have wrong spell id %u, ignoring ",proto->ItemId, spellData.SpellId);
                continue;
            }

            Spell *spell = new Spell(pUser, spellInfo, (count > 0) , 0);
            spell->m_CastItem = pItem;
            spell->prepare(&targets);

            ++count;
        }
    }
}

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
            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
                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 requirements:
                    // Consume Shadows, Lesser Invisibility, so ignore checks for its
                    if (!IsNonCombatSpell(spellInfo))
                    {
                        int32 duration = GetSpellDuration(spellInfo);
                        int32 cooldown = GetSpellRecoveryTime(spellInfo);

                        // allow only spell not on cooldown
                        if (cooldown != 0 && duration < cooldown)
                            continue;

                        // not allow instant kill auto casts as full health cost
                        if (IsSpellHaveEffect(spellInfo, SPELL_EFFECT_INSTAKILL))
                            continue;
                    }
                }
                // just ignore non-combat spells
                else if (IsNonCombatSpell(spellInfo))
                    continue;

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

                if (inCombat && !m_unit->hasUnitState(UNIT_STAT_FOLLOW) && spell->CanAutoCast(victim))
                {
                    targetSpellStore.push_back(TargetSpellList::value_type(victim, spell));
                    continue;
                }
                else
                {
                    bool spellUsed = false;
                    for (GuidSet::const_iterator tar = m_AllySet.begin(); tar != m_AllySet.end(); ++tar)
                    {
                        Unit* Target = m_unit->GetMap()->GetUnit(*tar);

                        // only buff targets that are in combat, unless the spell can only be cast while out of combat

void WorldSession::HandleUseItemOpcode(WorldPacket& recvPacket)
{
    // TODO: add targets.read() check
    Player* pUser = _player;

    // ignore for remote control state
    if(pUser->m_mover != pUser)
        return;

    uint8 bagIndex, slot;
    uint8 unk_flags;                                        // flags (if 0x02 - some additional data are received)
    uint8 cast_count;                                       // next cast if exists (single or not)
    uint64 item_guid;
    uint32 glyphIndex;                                      // something to do with glyphs?
    uint32 spellid;                                         // casted spell id

    recvPacket >> bagIndex >> slot >> cast_count >> spellid >> item_guid >> glyphIndex >> unk_flags;

    // reject fake data
    if (glyphIndex >= MAX_GLYPH_SLOT_INDEX)
    {
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, NULL, NULL );
        return;
    }

    Item *pItem = pUser->GetItemByPos(bagIndex, slot);
    if (!pItem)
    {
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, NULL, NULL );
        return;
    }

    if (pItem->GetGUID() != item_guid)
    {
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, NULL, NULL );
        return;
    }

    sLog.outDetail("WORLD: CMSG_USE_ITEM packet, bagIndex: %u, slot: %u, cast_count: %u, spellid: %u, Item: %u, glyphIndex: %u, unk_flags: %u, data length = %i", bagIndex, slot, cast_count, spellid, pItem->GetEntry(), glyphIndex, unk_flags, (uint32)recvPacket.size());

    ItemPrototype const *proto = pItem->GetProto();
    if (!proto)
    {
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, pItem, NULL );
        return;
    }

    // some item classes can be used only in equipped state
    if (proto->InventoryType != INVTYPE_NON_EQUIP && !pItem->IsEquipped())
    {
        pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, pItem, NULL );
        return;
    }

    uint8 msg = pUser->CanUseItem(pItem);
    if (msg != EQUIP_ERR_OK)
    {
        pUser->SendEquipError( msg, pItem, NULL );
        return;
    }

    // only allow conjured consumable, bandage, poisons (all should have the 2^21 item flag set in DB)
    if (proto->Class == ITEM_CLASS_CONSUMABLE &&
        !(proto->Flags & ITEM_FLAGS_USEABLE_IN_ARENA) &&
        pUser->InArena())
    {
        pUser->SendEquipError(EQUIP_ERR_NOT_DURING_ARENA_MATCH,pItem,NULL);
        return;
    }

    if (pUser->isInCombat())
    {
        for(int i = 0; i < MAX_ITEM_PROTO_SPELLS; ++i)
        {
            if (SpellEntry const *spellInfo = sSpellStore.LookupEntry(proto->Spells[i].SpellId))
            {
                if (IsNonCombatSpell(spellInfo))
                {
                    pUser->SendEquipError(EQUIP_ERR_NOT_IN_COMBAT,pItem,NULL);
                    return;
                }
            }
        }
    }

    // check also  BIND_WHEN_PICKED_UP and BIND_QUEST_ITEM for .additem or .additemset case by GM (not binded at adding to inventory)
    if( pItem->GetProto()->Bonding == BIND_WHEN_USE || pItem->GetProto()->Bonding == BIND_WHEN_PICKED_UP || pItem->GetProto()->Bonding == BIND_QUEST_ITEM )
    {
        if (!pItem->IsSoulBound())
        {
            pItem->SetState(ITEM_CHANGED, pUser);
            pItem->SetBinding( true );
        }
    }

    SpellCastTargets targets;

    recvPacket >> targets.ReadForCaster(pUser);

    targets.Update(pUser);
//.........这里部分代码省略.........