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);
if (!pItem->IsTargetValidForItemUse(targets.getUnitTarget()))
{
// free gray item after use fail
pUser->SendEquipError(EQUIP_ERR_NONE, pItem, NULL);
// send spell error
if (SpellEntry const* spellInfo = sSpellStore.LookupEntry(spellid))
{
// for implicit area/coord target spells
if (IsPointEffectTarget(Targets(spellInfo->EffectImplicitTargetA[EFFECT_INDEX_0])) ||
IsAreaEffectTarget(Targets(spellInfo->EffectImplicitTargetA[EFFECT_INDEX_0])))
Spell::SendCastResult(_player,spellInfo,cast_count,SPELL_FAILED_NO_VALID_TARGETS);
// for explicit target spells
else
Spell::SendCastResult(_player,spellInfo,cast_count,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
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;
}
}
}
// Prevent potion drink if another potion in processing (client have potions disabled in like case)
if (pItem->IsPotion() && pUser->GetLastPotionId())
{
recvPacket.rpos(recvPacket.wpos()); // prevent spam at not read packet tail
pUser->SendEquipError(EQUIP_ERR_OBJECT_IS_BUSY, 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);
// some spell cast packet including more data (for projectiles)
targets.ReadAdditionalSpellData(recvPacket, cast_flags);
targets.Update(pUser);
if (!pItem->IsTargetValidForItemUse(targets.getUnitTarget()))
{
// free gray item after use fail
pUser->SendEquipError(EQUIP_ERR_NONE, pItem, nullptr);
// send spell error
if (SpellEntry const* spellInfo = sSpellTemplate.LookupEntry<SpellEntry>(spellid))
{
// for implicit area/coord target spells
if (IsPointEffectTarget(Targets(spellInfo->EffectImplicitTargetA[EFFECT_INDEX_0])) ||
IsAreaEffectTarget(Targets(spellInfo->EffectImplicitTargetA[EFFECT_INDEX_0])))
Spell::SendCastResult(_player, spellInfo, cast_count, SPELL_FAILED_NO_VALID_TARGETS);
// for explicit target spells
else
Spell::SendCastResult(_player, spellInfo, cast_count, 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 (!sScriptDevAIMgr.OnItemUse(pUser, pItem, targets))
{
// no script or script not process request by self
pUser->CastItemUseSpell(pItem, targets, cast_count, glyphIndex);
}
}