C++ Spell::PetCanCast方法代码示例

//.........这里部分代码省略.........
            if(guid2)
                unit_target = ObjectAccessor::GetUnit(*_player,guid2);

            // do not cast unknown spells
            SpellEntry const *spellInfo = sSpellStore.LookupEntry(spellid );
            if(!spellInfo)
            {
                sLog.outError("WORLD: unknown PET spell id %i", spellid);
                return;
            }

            for(uint32 i = 0; i < 3;i++)
            {
                if(spellInfo->EffectImplicitTargetA[i] == TARGET_UNIT_AREA_ENEMY_SRC || spellInfo->EffectImplicitTargetA[i] == TARGET_UNIT_AREA_ENEMY_DST || spellInfo->EffectImplicitTargetA[i] == TARGET_DEST_DYNOBJ_ENEMY)
                    return;
            }

            // do not cast not learned spells
            if(!pet->HasSpell(spellid) || IsPassiveSpell(spellid))
                return;

            //  Clear the flags as if owner clicked 'attack'. AI will reset them
            //  after AttackStart, even if spell failed
            if (pet->GetCharmInfo())
            {
                pet->GetCharmInfo()->SetIsAtStay(false);
                pet->GetCharmInfo()->SetIsCommandAttack(true);
                pet->GetCharmInfo()->SetIsReturning(false);
                pet->GetCharmInfo()->SetIsFollowing(false);
            }

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

            int16 result = spell->PetCanCast(unit_target);

                                                            //auto turn to target unless possessed
            if(result == SPELL_FAILED_UNIT_NOT_INFRONT && !pet->isPossessed())
            {
                pet->SetInFront(unit_target);
                if( unit_target->GetTypeId() == TYPEID_PLAYER )
                    pet->SendUpdateToPlayer( (Player*)unit_target );
                if(Unit* powner = pet->GetCharmerOrOwner())
                    if(powner->GetTypeId() == TYPEID_PLAYER)
                        pet->SendUpdateToPlayer((Player*)powner);
                result = -1;
            }

            if(result == -1)
            {
                ((Creature*)pet)->AddCreatureSpellCooldown(spellid);
                if (((Creature*)pet)->isPet())
                    ((Pet*)pet)->CheckLearning(spellid);

                unit_target = spell->m_targets.getUnitTarget();

                //10% chance to play special pet attack talk, else growl
                //actually this only seems to happen on special spells, fire shield for imp, torment for voidwalker, but it's stupid to check every spell
                if(((Creature*)pet)->isPet() && (((Pet*)pet)->getPetType() == SUMMON_PET) && (pet != unit_target) && (urand(0, 100) < 10))
                    pet->SendPetTalk((uint32)PET_TALK_SPECIAL_SPELL);
                else
                {
                    pet->SendPetAIReaction(guid1);
                }

                if( unit_target && !GetPlayer()->IsFriendlyTo(unit_target) && !pet->isPossessed())
                {

void WorldSession::HandlePetCastSpellOpcode( WorldPacket& recvPacket )
{
    sLog.outDetail("WORLD: CMSG_PET_CAST_SPELL");

    CHECK_PACKET_SIZE(recvPacket,8+4);
    uint64 guid;
    uint32 spellid;

    recvPacket >> guid >> spellid;

    // This opcode is also sent from charmed and possessed units (players and creatures)
    if(!_player->GetPet() && !_player->GetCharm())
        return;

    Unit* caster = ObjectAccessor::GetUnit(*_player, guid);

    if(!caster || (caster != _player->GetPet() && caster != _player->GetCharm()))
    {
        sLog.outError( "HandlePetCastSpellOpcode: Pet %u isn't pet of player %s .\n", uint32(GUID_LOPART(guid)),GetPlayer()->GetName() );
        return;
    }

    SpellEntry const *spellInfo = sSpellStore.LookupEntry(spellid);
    if(!spellInfo)
    {
        sLog.outError("WORLD: unknown PET spell id %i\n", spellid);
        return;
    }

    // do not cast not learned spells
    if(!caster->HasSpell(spellid) || IsPassiveSpell(spellid))
        return;

    if (spellInfo->StartRecoveryCategory > 0) //Check if spell is affected by GCD
        if (caster->GetTypeId() == TYPEID_UNIT && ((Creature*)caster)->GetGlobalCooldown() > 0)
        {
            caster->SendPetCastFail(spellid, SPELL_FAILED_NOT_READY);
            return;
        }

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

    caster->clearUnitState(UNIT_STAT_FOLLOW);

    Spell *spell = new Spell(caster, spellInfo, spellid == 33395); // water elemental can cast freeze as triggered
    spell->m_targets = targets;

    int16 result = spell->PetCanCast(NULL);
    if(result == -1)
    {
        if(caster->GetTypeId() == TYPEID_UNIT)
        {
            Creature* pet = (Creature*)caster;
            pet->AddCreatureSpellCooldown(spellid);
            if(pet->isPet())
            {
                Pet* p = (Pet*)pet;
                p->CheckLearning(spellid);
                // 10% chance to play special pet attack talk, else growl
                // actually this only seems to happen on special spells, fire shield for imp, torment for voidwalker, but it's stupid to check every spell
                if(p->getPetType() == SUMMON_PET && (urand(0, 100) < 10))
                    pet->SendPetTalk((uint32)PET_TALK_SPECIAL_SPELL);
                else
                    pet->SendPetAIReaction(guid);
            }
        }

        spell->prepare(&(spell->m_targets));
    }
    else
    {
        caster->SendPetCastFail(spellid, result);
        if(caster->GetTypeId() == TYPEID_PLAYER)
        {
            if(!((Player*)caster)->HasSpellCooldown(spellid))
                caster->SendPetClearCooldown(spellid);
        }
        else
        {
            if(!((Creature*)caster)->HasSpellCooldown(spellid))
                caster->SendPetClearCooldown(spellid);
        }

        spell->finish(false);
        delete spell;
    }
}

void WorldSession::HandlePetCastSpellOpcode( WorldPacket& recvPacket )
{
    sLog.outDetail("WORLD: CMSG_PET_CAST_SPELL");

    CHECK_PACKET_SIZE(recvPacket,8+1+4+1);
    uint64 guid;
    uint32 spellid;
    uint8  cast_count;
    uint8  unk_flags;                                       // flags (if 0x02 - some additional data are received)

    recvPacket >> guid >> cast_count >> spellid >> unk_flags;

    sLog.outDebug("WORLD: CMSG_PET_CAST_SPELL, cast_count: %u, spellid %u, unk_flags %u", cast_count, spellid, unk_flags);

    if(!_player->GetPet() && !_player->GetCharm())
        return;

    if (GUID_HIPART(guid) == HIGHGUID_PLAYER)
        return;

    Creature* pet = ObjectAccessor::GetCreatureOrPetOrVehicle(*_player,guid);

    if(!pet || (pet != _player->GetPet() && pet!= _player->GetCharm()))
    {
        sLog.outError( "HandlePetCastSpellOpcode: Pet %u isn't pet of player %s .\n", uint32(GUID_LOPART(guid)),GetPlayer()->GetName() );
        return;
    }

    if (pet->GetGlobalCooldown() > 0)
        return;

    SpellEntry const *spellInfo = sSpellStore.LookupEntry(spellid);
    if(!spellInfo)
    {
        sLog.outError("WORLD: unknown PET spell id %i\n", spellid);
        return;
    }

    // do not cast not learned spells
    if(!pet->HasSpell(spellid) || IsPassiveSpell(spellid))
        return;

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

    pet->clearUnitState(UNIT_STAT_FOLLOW);

    Spell *spell = new Spell(pet, spellInfo, false);
    spell->m_cast_count = cast_count;                       // probably pending spell cast
    spell->m_targets = targets;

    int16 result = spell->PetCanCast(NULL);
    if(result == -1)
    {
        pet->AddCreatureSpellCooldown(spellid);
        if(pet->isPet())
        {
            Pet* p = (Pet*)pet;
            p->CheckLearning(spellid);
            //10% chance to play special pet attack talk, else growl
            //actually this only seems to happen on special spells, fire shield for imp, torment for voidwalker, but it's stupid to check every spell
            if(p->getPetType() == SUMMON_PET && (urand(0, 100) < 10))
                pet->SendPetTalk((uint32)PET_TALK_SPECIAL_SPELL);
            else
                pet->SendPetAIReaction(guid);
        }

        spell->prepare(&(spell->m_targets));
    }
    else
    {
        pet->SendPetCastFail(spellid, result);
        if(!pet->HasSpellCooldown(spellid))
            pet->SendPetClearCooldown(spellid);

        spell->finish(false);
        delete spell;
    }
}