void WorldSession::HandleAreaTriggerOpcode(WorldPacket& recvData)
{
    uint32 triggerId;
    recvData >> triggerId;

    TC_LOG_DEBUG("network", "CMSG_AREATRIGGER. Trigger ID: %u", triggerId);

    Player* player = GetPlayer();
    if (player->IsInFlight())
    {
        TC_LOG_DEBUG("network", "HandleAreaTriggerOpcode: Player '%s' (GUID: %u) in flight, ignore Area Trigger ID:%u",
            player->GetName().c_str(), player->GetGUID().GetCounter(), triggerId);
        return;
    }

    AreaTriggerEntry const* atEntry = sAreaTriggerStore.LookupEntry(triggerId);
    if (!atEntry)
    {
        TC_LOG_DEBUG("network", "HandleAreaTriggerOpcode: Player '%s' (GUID: %u) send unknown (by DBC) Area Trigger ID:%u",
            player->GetName().c_str(), player->GetGUID().GetCounter(), triggerId);
        return;
    }

    if (!player->IsInAreaTriggerRadius(atEntry))
    {
        TC_LOG_DEBUG("network", "HandleAreaTriggerOpcode: Player '%s' (GUID: %u) too far, ignore Area Trigger ID: %u",
            player->GetName().c_str(), player->GetGUID().GetCounter(), triggerId);
        return;
    }

    if (player->isDebugAreaTriggers)
        ChatHandler(player->GetSession()).PSendSysMessage(LANG_DEBUG_AREATRIGGER_REACHED, triggerId);

    if (sScriptMgr->OnAreaTrigger(player, atEntry))
        return;

    if (player->IsAlive())
        if (uint32 questId = sObjectMgr->GetQuestForAreaTrigger(triggerId))
            if (player->GetQuestStatus(questId) == QUEST_STATUS_INCOMPLETE)
                player->AreaExploredOrEventHappens(questId);

    if (sObjectMgr->IsTavernAreaTrigger(triggerId))
    {
        // set resting flag we are in the inn
        player->SetRestFlag(REST_FLAG_IN_TAVERN, atEntry->id);

        if (sWorld->IsFFAPvPRealm())
            player->RemoveByteFlag(UNIT_FIELD_BYTES_2, UNIT_BYTES_2_OFFSET_PVP_FLAG, UNIT_BYTE2_FLAG_FFA_PVP);

        return;
    }

    if (Battleground* bg = player->GetBattleground())
        if (bg->GetStatus() == STATUS_IN_PROGRESS)
            bg->HandleAreaTrigger(player, triggerId);

    if (OutdoorPvP* pvp = player->GetOutdoorPvP())
        if (pvp->HandleAreaTrigger(_player, triggerId))
            return;

    AreaTrigger const* at = sObjectMgr->GetAreaTrigger(triggerId);
    if (!at)
        return;

    bool teleported = false;
    if (player->GetMapId() != at->target_mapId)
    {
        if (Map::EnterState denyReason = sMapMgr->PlayerCannotEnter(at->target_mapId, player, false))
        {
            bool reviveAtTrigger = false; // should we revive the player if he is trying to enter the correct instance?
            switch (denyReason)
            {
                case Map::CANNOT_ENTER_NO_ENTRY:
                    TC_LOG_DEBUG("maps", "MAP: Player '%s' attempted to enter map with id %d which has no entry", player->GetName().c_str(), at->target_mapId);
                    break;
                case Map::CANNOT_ENTER_UNINSTANCED_DUNGEON:
                    TC_LOG_DEBUG("maps", "MAP: Player '%s' attempted to enter dungeon map %d but no instance template was found", player->GetName().c_str(), at->target_mapId);
                    break;
                case Map::CANNOT_ENTER_DIFFICULTY_UNAVAILABLE:
                    TC_LOG_DEBUG("maps", "MAP: Player '%s' attempted to enter instance map %d but the requested difficulty was not found", player->GetName().c_str(), at->target_mapId);
                    if (MapEntry const* entry = sMapStore.LookupEntry(at->target_mapId))
                        player->SendTransferAborted(entry->MapID, TRANSFER_ABORT_DIFFICULTY, player->GetDifficulty(entry->IsRaid()));
                    break;
                case Map::CANNOT_ENTER_NOT_IN_RAID:
                {
                    WorldPacket data(SMSG_RAID_GROUP_ONLY, 4 + 4);
                    data << uint32(0);
                    data << uint32(2); // You must be in a raid group to enter this instance.
                    player->SendDirectMessage(&data);
                    TC_LOG_DEBUG("maps", "MAP: Player '%s' must be in a raid group to enter instance map %d", player->GetName().c_str(), at->target_mapId);
                    reviveAtTrigger = true;
                    break;
                }
                case Map::CANNOT_ENTER_CORPSE_IN_DIFFERENT_INSTANCE:
                {
                    WorldPacket data(SMSG_CORPSE_NOT_IN_INSTANCE);
                    player->SendDirectMessage(&data);
                    TC_LOG_DEBUG("maps", "MAP: Player '%s' does not have a corpse in instance map %d and cannot enter", player->GetName().c_str(), at->target_mapId);
                    break;
                }
                case Map::CANNOT_ENTER_INSTANCE_BIND_MISMATCH:
                    if (MapEntry const* entry = sMapStore.LookupEntry(at->target_mapId))
                    {
                        char const* mapName = entry->name[player->GetSession()->GetSessionDbcLocale()];
                        TC_LOG_DEBUG("maps", "MAP: Player '%s' cannot enter instance map '%s' because their permanent bind is incompatible with their group's", player->GetName().c_str(), mapName);
                        // is there a special opcode for this?
                        // @todo figure out how to get player localized difficulty string (e.g. "10 player", "Heroic" etc)
                        ChatHandler(player->GetSession()).PSendSysMessage(player->GetSession()->GetTrinityString(LANG_INSTANCE_BIND_MISMATCH), mapName);
                    }
                    reviveAtTrigger = true;
                    break;
                case Map::CANNOT_ENTER_TOO_MANY_INSTANCES:
                    player->SendTransferAborted(at->target_mapId, TRANSFER_ABORT_TOO_MANY_INSTANCES);
                    TC_LOG_DEBUG("maps", "MAP: Player '%s' cannot enter instance map %d because he has exceeded the maximum number of instances per hour.", player->GetName().c_str(), at->target_mapId);
                    reviveAtTrigger = true;
                    break;
                case Map::CANNOT_ENTER_MAX_PLAYERS:
                    player->SendTransferAborted(at->target_mapId, TRANSFER_ABORT_MAX_PLAYERS);
                    reviveAtTrigger = true;
                    break;
                case Map::CANNOT_ENTER_ZONE_IN_COMBAT:
                    player->SendTransferAborted(at->target_mapId, TRANSFER_ABORT_ZONE_IN_COMBAT);
                    reviveAtTrigger = true;
                    break;
                default:
                    break;
            }

            if (reviveAtTrigger) // check if the player is touching the areatrigger leading to the map his corpse is on
                if (!player->IsAlive() && player->HasCorpse())
                    if (player->GetCorpseLocation().GetMapId() == at->target_mapId)
                    {
                        player->ResurrectPlayer(0.5f);
                        player->SpawnCorpseBones();
                    }

            return;
        }

        if (Group* group = player->GetGroup())
            if (group->isLFGGroup() && player->GetMap()->IsDungeon())
                teleported = player->TeleportToBGEntryPoint();
    }

    if (!teleported)
        player->TeleportTo(at->target_mapId, at->target_X, at->target_Y, at->target_Z, at->target_Orientation, TELE_TO_NOT_LEAVE_TRANSPORT);
}

bool ScriptMgr::OnAreaTrigger(Player* player, AreaTriggerEntry const* trigger, bool entered)
{
    ASSERT(player);
    ASSERT(trigger);

    GET_SCRIPT_RET(AreaTriggerScript, sObjectMgr->GetAreaTriggerScriptId(trigger->ID), tmpscript, false); /*убеждаемся, что говнокод в TrinityCore все еще процветает*/
    return tmpscript->OnTrigger(player, trigger, entered);
}