Loot.cpp

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/*
 * This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */
 
#include "Loot.h"
#include "Group.h"
#include "ItemEnchantmentMgr.h"
#include "ItemTemplate.h"
#include "Log.h"
#include "LootMgr.h"
#include "ObjectAccessor.h"
#include "ObjectMgr.h"
#include "Player.h"
#include "Random.h"
#include "World.h"
 
 //
 // --------- LootItem ---------
 //
 
 // Constructor, copies most fields from LootStoreItem and generates random count
LootItem::LootItem(LootStoreItem const& li)
{
    itemid = li.itemid;
    itemIndex = 0;
    conditions = li.conditions;
 
    ItemTemplate const* proto = sObjectMgr->GetItemTemplate(itemid);
    freeforall = proto && proto->HasFlag(ITEM_FLAG_MULTI_DROP);
    follow_loot_rules = proto && (proto->HasFlag(ITEM_FLAGS_CU_FOLLOW_LOOT_RULES));
 
    needs_quest = li.needs_quest;
 
    randomSuffix = GenerateEnchSuffixFactor(itemid);
    randomPropertyId = GenerateItemRandomPropertyId(itemid);
    count = 0;
    is_looted = false;
    is_blocked = false;
    is_underthreshold = false;
    is_counted = false;
    rollWinnerGUID = ObjectGuid::Empty;
}
 
bool LootItem::AllowedForPlayer(Player const* player, ObjectGuid ownerGuid) const
{
    return AllowedForPlayer(player, false, ownerGuid);
}
 
bool LootItem::AllowedForPlayer(Player const* player, bool isGivenByMasterLooter) const
{
    return AllowedForPlayer(player, isGivenByMasterLooter, ObjectGuid::Empty);
}
 
// Basic checks for player/item compatibility - if false no chance to see the item in the loot
bool LootItem::AllowedForPlayer(Player const* player, bool isGivenByMasterLooter, ObjectGuid ownerGuid) const
{
    // DB conditions check
    if (!sConditionMgr->IsObjectMeetToConditions(const_cast<Player*>(player), conditions))
        return false;
 
    ItemTemplate const* pProto = sObjectMgr->GetItemTemplate(itemid);
    if (!pProto)
        return false;
 
    // not show loot for not own team
    if (pProto->HasFlag(ITEM_FLAG2_FACTION_HORDE) && player->GetTeam() != HORDE)
        return false;
 
    if (pProto->HasFlag(ITEM_FLAG2_FACTION_ALLIANCE) && player->GetTeam() != ALLIANCE)
        return false;
 
    // Master looter can see all items even if the character can't loot them
    if (!isGivenByMasterLooter && player->GetGroup() && player->GetGroup()->GetMasterLooterGuid() == player->GetGUID())
    {
        return true;
    }
 
    // Don't allow loot for players without profession or those who already know the recipe
    if (pProto->HasFlag(ITEM_FLAG_HIDE_UNUSABLE_RECIPE))
    {
        if (!player->HasSkill(pProto->RequiredSkill))
            return false;
 
        for (ItemEffect const& itemEffect : pProto->Effects)
        {
            if (itemEffect.TriggerType != ITEM_SPELLTRIGGER_LEARN_SPELL_ID)
                continue;
 
            if (player->HasSpell(itemEffect.SpellID))
                return false;
        }
    }
 
    // Don't allow to loot soulbound recipes that the player has already learned
    if (pProto->Class == ITEM_CLASS_RECIPE && pProto->Bonding == BIND_WHEN_PICKED_UP)
    {
        for (ItemEffect const& itemEffect : pProto->Effects)
        {
            if (itemEffect.TriggerType != ITEM_SPELLTRIGGER_LEARN_SPELL_ID)
                continue;
 
            if (player->HasSpell(itemEffect.SpellID))
                return false;
        }
    }
 
    if (needs_quest && !freeforall && player->GetGroup() && (player->GetGroup()->GetLootMethod() == GROUP_LOOT || player->GetGroup()->GetLootMethod() == ROUND_ROBIN) && !ownerGuid.IsEmpty() && ownerGuid != player->GetGUID())
        return false;
 
    // check quest requirements
    if (!pProto->HasFlag(ITEM_FLAGS_CU_IGNORE_QUEST_STATUS) && ((needs_quest || (pProto->StartQuest && player->GetQuestStatus(pProto->StartQuest) != QUEST_STATUS_NONE)) && !player->HasQuestForItem(itemid)))
        return false;
 
    return true;
}
 
void LootItem::AddAllowedLooter(Player const* player)
{
    allowedGUIDs.insert(player->GetGUID());
}
 
//
// --------- Loot ---------
//
 
Loot::Loot(uint32 _gold /*= 0*/) : gold(_gold), unlootedCount(0), roundRobinPlayer(), loot_type(LOOT_NONE), maxDuplicates(1), containerID(0)
{
}
 
Loot::~Loot()
{
    clear();
}
 
void Loot::clear()
{
    for (NotNormalLootItemMap::const_iterator itr = PlayerQuestItems.begin(); itr != PlayerQuestItems.end(); ++itr)
        delete itr->second;
    PlayerQuestItems.clear();
 
    for (NotNormalLootItemMap::const_iterator itr = PlayerFFAItems.begin(); itr != PlayerFFAItems.end(); ++itr)
        delete itr->second;
    PlayerFFAItems.clear();
 
    for (NotNormalLootItemMap::const_iterator itr = PlayerNonQuestNonFFAConditionalItems.begin(); itr != PlayerNonQuestNonFFAConditionalItems.end(); ++itr)
        delete itr->second;
    PlayerNonQuestNonFFAConditionalItems.clear();
 
    PlayersLooting.clear();
    items.clear();
    quest_items.clear();
    gold = 0;
    unlootedCount = 0;
    roundRobinPlayer.Clear();
    loot_type = LOOT_NONE;
    i_LootValidatorRefManager.clearReferences();
}
 
// Inserts the item into the loot (called by LootTemplate processors)
void Loot::AddItem(LootStoreItem const& item)
{
    ItemTemplate const* proto = sObjectMgr->GetItemTemplate(item.itemid);
    if (!proto)
        return;
 
    uint32 count = urand(item.mincount, item.maxcount);
    uint32 stacks = count / proto->GetMaxStackSize() + ((count % proto->GetMaxStackSize()) ? 1 : 0);
 
    std::vector<LootItem>& lootItems = item.needs_quest ? quest_items : items;
    uint32 limit = item.needs_quest ? MAX_NR_QUEST_ITEMS : MAX_NR_LOOT_ITEMS;
 
    for (uint32 i = 0; i < stacks && lootItems.size() < limit; ++i)
    {
        LootItem generatedLoot(item);
        generatedLoot.count = std::min(count, proto->GetMaxStackSize());
        generatedLoot.itemIndex = lootItems.size();
        lootItems.push_back(generatedLoot);
        count -= proto->GetMaxStackSize();
 
        // In some cases, a dropped item should be visible/lootable only for some players in group
        bool canSeeItemInLootWindow = false;
        if (Player* player = ObjectAccessor::FindPlayer(lootOwnerGUID))
        {
            if (Group* group = player->GetGroup())
            {
                for (GroupReference* itr = group->GetFirstMember(); itr != nullptr; itr = itr->next())
                    if (Player* member = itr->GetSource())
                        if (generatedLoot.AllowedForPlayer(member, lootOwnerGUID))
                            canSeeItemInLootWindow = true;
            }
            else if (generatedLoot.AllowedForPlayer(player, lootOwnerGUID))
                canSeeItemInLootWindow = true;
        }
 
        if (!canSeeItemInLootWindow)
            continue;
 
        // non-conditional one-player only items are counted here,
        // free for all items are counted in FillFFALoot(),
        // non-ffa conditionals are counted in FillNonQuestNonFFAConditionalLoot()
        if (!item.needs_quest && item.conditions.empty() && !proto->HasFlag(ITEM_FLAG_MULTI_DROP))
            ++unlootedCount;
    }
}
 
// Calls processor of corresponding LootTemplate (which handles everything including references)
bool Loot::FillLoot(uint32 lootId, LootStore const& store, Player* lootOwner, bool personal, bool noEmptyError, uint16 lootMode /*= LOOT_MODE_DEFAULT*/)
{
    // Must be provided
    if (!lootOwner)
        return false;
 
    lootOwnerGUID = lootOwner->GetGUID();
 
    LootTemplate const* tab = store.GetLootFor(lootId);
 
    if (!tab)
    {
        if (!noEmptyError)
            TC_LOG_ERROR("sql.sql", "Table '{}' loot id #{} used but it doesn't have records.", store.GetName(), lootId);
        return false;
    }
 
    items.reserve(MAX_NR_LOOT_ITEMS);
    quest_items.reserve(MAX_NR_QUEST_ITEMS);
 
    tab->Process(*this, store.IsRatesAllowed(), lootMode);          // Processing is done there, callback via Loot::AddItem()
 
                                                                    // Setting access rights for group loot case
    Group* group = lootOwner->GetGroup();
    if (!personal && group)
    {
        roundRobinPlayer = lootOwner->GetGUID();
 
        for (GroupReference* itr = group->GetFirstMember(); itr != nullptr; itr = itr->next())
            if (Player* player = itr->GetSource())   // should actually be looted object instead of lootOwner but looter has to be really close so doesnt really matter
                if (player->IsInMap(lootOwner))
                    FillNotNormalLootFor(player, player->IsAtGroupRewardDistance(lootOwner));
 
        for (uint8 i = 0; i < items.size(); ++i)
        {
            if (ItemTemplate const* proto = sObjectMgr->GetItemTemplate(items[i].itemid))
                if (proto->Quality < uint32(group->GetLootThreshold()))
                    items[i].is_underthreshold = true;
        }
    }
    // ... for personal loot
    else
        FillNotNormalLootFor(lootOwner, true);
 
    return true;
}
 
void Loot::FillNotNormalLootFor(Player* player, bool presentAtLooting)
{
    ObjectGuid plguid = player->GetGUID();
 
    NotNormalLootItemMap::const_iterator qmapitr = PlayerQuestItems.find(plguid);
    if (qmapitr == PlayerQuestItems.end())
        FillQuestLoot(player);
 
    qmapitr = PlayerFFAItems.find(plguid);
    if (qmapitr == PlayerFFAItems.end())
        FillFFALoot(player);
 
    qmapitr = PlayerNonQuestNonFFAConditionalItems.find(plguid);
    if (qmapitr == PlayerNonQuestNonFFAConditionalItems.end())
        FillNonQuestNonFFAConditionalLoot(player, presentAtLooting);
 
    // if not auto-processed player will have to come and pick it up manually
    if (!presentAtLooting)
        return;
 
    // Process currency items
    uint32 max_slot = GetMaxSlotInLootFor(player);
    LootItem const* item = nullptr;
    uint32 itemsSize = uint32(items.size());
    for (uint32 i = 0; i < max_slot; ++i)
    {
        if (i < items.size())
            item = &items[i];
        else
            item = &quest_items[i - itemsSize];
 
        if (!item->is_looted && item->freeforall && item->AllowedForPlayer(player, lootOwnerGUID))
            if (ItemTemplate const* proto = sObjectMgr->GetItemTemplate(item->itemid))
                if (proto->IsCurrencyToken())
                    player->StoreLootItem(i, this);
    }
}
 
NotNormalLootItemList* Loot::FillFFALoot(Player* player)
{
    NotNormalLootItemList* ql = new NotNormalLootItemList();
 
    for (uint8 i = 0; i < items.size(); ++i)
    {
        LootItem &item = items[i];
        if (!item.is_looted && item.freeforall && item.AllowedForPlayer(player, lootOwnerGUID))
        {
            ql->push_back(NotNormalLootItem(i));
            ++unlootedCount;
        }
    }
    if (ql->empty())
    {
        delete ql;
        return nullptr;
    }
 
    PlayerFFAItems[player->GetGUID()] = ql;
    return ql;
}
 
NotNormalLootItemList* Loot::FillQuestLoot(Player* player)
{
    if (items.size() == MAX_NR_LOOT_ITEMS)
        return nullptr;
 
    NotNormalLootItemList* ql = new NotNormalLootItemList();
 
    for (uint8 i = 0; i < quest_items.size(); ++i)
    {
        LootItem &item = quest_items[i];
 
        if (!item.is_looted && (item.AllowedForPlayer(player, lootOwnerGUID) || (item.follow_loot_rules && player->GetGroup() && ((player->GetGroup()->GetLootMethod() == MASTER_LOOT && player->GetGroup()->GetMasterLooterGuid() == player->GetGUID()) || player->GetGroup()->GetLootMethod() != MASTER_LOOT))))
        {
            ql->push_back(NotNormalLootItem(i));
 
            // quest items get blocked when they first appear in a
            // player's quest vector
            //
            // increase once if one looter only, looter-times if free for all
            if (item.freeforall || !item.is_blocked)
                ++unlootedCount;
            if (!player->GetGroup() || (player->GetGroup()->GetLootMethod() != GROUP_LOOT && player->GetGroup()->GetLootMethod() != ROUND_ROBIN))
                item.is_blocked = true;
 
            if (items.size() + ql->size() == MAX_NR_LOOT_ITEMS)
                break;
        }
    }
    if (ql->empty())
    {
        delete ql;
        return nullptr;
    }
 
    PlayerQuestItems[player->GetGUID()] = ql;
    return ql;
}
 
NotNormalLootItemList* Loot::FillNonQuestNonFFAConditionalLoot(Player* player, bool presentAtLooting)
{
    NotNormalLootItemList* ql = new NotNormalLootItemList();
 
    for (uint8 i = 0; i < items.size(); ++i)
    {
        LootItem &item = items[i];
        if (!item.is_looted && !item.freeforall && (item.AllowedForPlayer(player, lootOwnerGUID)))
        {
            if (presentAtLooting)
                item.AddAllowedLooter(player);
            if (!item.conditions.empty())
            {
                ql->push_back(NotNormalLootItem(i));
                if (!item.is_counted)
                {
                    ++unlootedCount;
                    item.is_counted = true;
                }
            }
        }
    }
    if (ql->empty())
    {
        delete ql;
        return nullptr;
    }
 
    PlayerNonQuestNonFFAConditionalItems[player->GetGUID()] = ql;
    return ql;
}
 
//===================================================
 
void Loot::NotifyItemRemoved(uint8 lootIndex)
{
    // notify all players that are looting this that the item was removed
    // convert the index to the slot the player sees
    GuidSet::iterator i_next;
    for (GuidSet::iterator i = PlayersLooting.begin(); i != PlayersLooting.end(); i = i_next)
    {
        i_next = i;
        ++i_next;
        if (Player* player = ObjectAccessor::FindPlayer(*i))
            player->SendNotifyLootItemRemoved(lootIndex);
        else
            PlayersLooting.erase(i);
    }
}
 
void Loot::NotifyMoneyRemoved()
{
    // notify all players that are looting this that the money was removed
    GuidSet::iterator i_next;
    for (GuidSet::iterator i = PlayersLooting.begin(); i != PlayersLooting.end(); i = i_next)
    {
        i_next = i;
        ++i_next;
        if (Player* player = ObjectAccessor::FindPlayer(*i))
            player->SendNotifyLootMoneyRemoved();
        else
            PlayersLooting.erase(i);
    }
}
 
void Loot::NotifyQuestItemRemoved(uint8 questIndex)
{
    // when a free for all questitem is looted
    // all players will get notified of it being removed
    // (other questitems can be looted by each group member)
    // bit inefficient but isn't called often
 
    GuidSet::iterator i_next;
    for (GuidSet::iterator i = PlayersLooting.begin(); i != PlayersLooting.end(); i = i_next)
    {
        i_next = i;
        ++i_next;
        if (Player* player = ObjectAccessor::FindPlayer(*i))
        {
            NotNormalLootItemMap::const_iterator pq = PlayerQuestItems.find(player->GetGUID());
            if (pq != PlayerQuestItems.end() && pq->second)
            {
                // find where/if the player has the given item in it's vector
                NotNormalLootItemList& pql = *pq->second;
 
                uint8 j;
                for (j = 0; j < pql.size(); ++j)
                    if (pql[j].index == questIndex)
                        break;
 
                if (j < pql.size())
                    player->SendNotifyLootItemRemoved(items.size() + j);
            }
        }
        else
            PlayersLooting.erase(i);
    }
}
 
void Loot::generateMoneyLoot(uint32 minAmount, uint32 maxAmount)
{
    if (maxAmount > 0)
    {
        if (maxAmount <= minAmount)
            gold = uint32(maxAmount * sWorld->getRate(RATE_DROP_MONEY));
        else if ((maxAmount - minAmount) < 32700)
            gold = uint32(urand(minAmount, maxAmount) * sWorld->getRate(RATE_DROP_MONEY));
        else
            gold = uint32(urand(minAmount >> 8, maxAmount >> 8) * sWorld->getRate(RATE_DROP_MONEY)) << 8;
    }
}
 
LootItem* Loot::LootItemInSlot(uint32 lootSlot, Player* player, NotNormalLootItem* *qitem, NotNormalLootItem* *ffaitem, NotNormalLootItem* *conditem)
{
    LootItem* item = nullptr;
    bool is_looted = true;
    if (lootSlot >= items.size())
    {
        uint32 questSlot = lootSlot - items.size();
        NotNormalLootItemMap::const_iterator itr = PlayerQuestItems.find(player->GetGUID());
        if (itr != PlayerQuestItems.end() && questSlot < itr->second->size())
        {
            NotNormalLootItem* qitem2 = &itr->second->at(questSlot);
            if (qitem)
                *qitem = qitem2;
            item = &quest_items[qitem2->index];
            is_looted = qitem2->is_looted;
        }
    }
    else
    {
        item = &items[lootSlot];
        is_looted = item->is_looted;
        if (item->freeforall)
        {
            NotNormalLootItemMap::const_iterator itr = PlayerFFAItems.find(player->GetGUID());
            if (itr != PlayerFFAItems.end())
            {
                for (NotNormalLootItemList::const_iterator iter = itr->second->begin(); iter != itr->second->end(); ++iter)
                    if (iter->index == lootSlot)
                    {
                        NotNormalLootItem* ffaitem2 = (NotNormalLootItem*)&(*iter);
                        if (ffaitem)
                            *ffaitem = ffaitem2;
                        is_looted = ffaitem2->is_looted;
                        break;
                    }
            }
        }
        else if (!item->conditions.empty())
        {
            NotNormalLootItemMap::const_iterator itr = PlayerNonQuestNonFFAConditionalItems.find(player->GetGUID());
            if (itr != PlayerNonQuestNonFFAConditionalItems.end())
            {
                for (NotNormalLootItemList::const_iterator iter = itr->second->begin(); iter != itr->second->end(); ++iter)
                {
                    if (iter->index == lootSlot)
                    {
                        NotNormalLootItem* conditem2 = (NotNormalLootItem*)&(*iter);
                        if (conditem)
                            *conditem = conditem2;
                        is_looted = conditem2->is_looted;
                        break;
                    }
                }
            }
        }
    }
 
    if (is_looted)
        return nullptr;
 
    return item;
}
 
uint32 Loot::GetMaxSlotInLootFor(Player* player) const
{
    NotNormalLootItemMap::const_iterator itr = PlayerQuestItems.find(player->GetGUID());
    return items.size() + (itr != PlayerQuestItems.end() ? itr->second->size() : 0);
}
 
// return true if there is any item that is lootable for any player (not quest item, FFA or conditional)
bool Loot::hasItemForAll() const
{
    // Gold is always lootable
    if (gold)
        return true;
 
    for (LootItem const& item : items)
        if (!item.is_looted && !item.freeforall && item.conditions.empty())
            return true;
    return false;
}
 
// return true if there is any FFA, quest or conditional item for the player.
bool Loot::hasItemFor(Player const* player) const
{
    NotNormalLootItemMap const& lootPlayerQuestItems = GetPlayerQuestItems();
    NotNormalLootItemMap::const_iterator q_itr = lootPlayerQuestItems.find(player->GetGUID());
    if (q_itr != lootPlayerQuestItems.end())
    {
        NotNormalLootItemList* q_list = q_itr->second;
        for (NotNormalLootItemList::const_iterator qi = q_list->begin(); qi != q_list->end(); ++qi)
        {
            LootItem const& item = quest_items[qi->index];
            if (!qi->is_looted && !item.is_looted)
                return true;
        }
    }
 
    NotNormalLootItemMap const& lootPlayerFFAItems = GetPlayerFFAItems();
    NotNormalLootItemMap::const_iterator ffa_itr = lootPlayerFFAItems.find(player->GetGUID());
    if (ffa_itr != lootPlayerFFAItems.end())
    {
        NotNormalLootItemList* ffa_list = ffa_itr->second;
        for (NotNormalLootItemList::const_iterator fi = ffa_list->begin(); fi != ffa_list->end(); ++fi)
        {
            LootItem const& item = items[fi->index];
            if (!fi->is_looted && !item.is_looted)
                return true;
        }
    }
 
    NotNormalLootItemMap const& lootPlayerNonQuestNonFFAConditionalItems = GetPlayerNonQuestNonFFAConditionalItems();
    NotNormalLootItemMap::const_iterator nn_itr = lootPlayerNonQuestNonFFAConditionalItems.find(player->GetGUID());
    if (nn_itr != lootPlayerNonQuestNonFFAConditionalItems.end())
    {
        NotNormalLootItemList* conditional_list = nn_itr->second;
        for (NotNormalLootItemList::const_iterator ci = conditional_list->begin(); ci != conditional_list->end(); ++ci)
        {
            LootItem const& item = items[ci->index];
            if (!ci->is_looted && !item.is_looted)
                return true;
        }
    }
 
    return false;
}
 
// return true if there is any item over the group threshold (i.e. not underthreshold).
bool Loot::hasOverThresholdItem() const
{
    for (uint8 i = 0; i < items.size(); ++i)
    {
        if (!items[i].is_looted && !items[i].is_underthreshold && !items[i].freeforall)
            return true;
    }
 
    return false;
}
 
ByteBuffer& operator<<(ByteBuffer& b, LootItem const& li)
{
    b << uint32(li.itemid);
    b << uint32(li.count);                                  // nr of items of this type
    b << uint32(ASSERT_NOTNULL(sObjectMgr->GetItemTemplate(li.itemid))->DisplayInfoID);
    b << uint32(li.randomSuffix);
    b << uint32(li.randomPropertyId);
    //b << uint8(0);                                        // slot type - will send after this function call
    return b;
}
 
ByteBuffer& operator<<(ByteBuffer& b, LootView const& lv)
{
    if (lv.permission == NONE_PERMISSION)
    {
        b << uint32(0);                                     // gold
        b << uint8(0);                                      // item count
        return b;
    }
 
    Loot &l = lv.loot;
 
    uint8 itemsShown = 0;
 
    b << uint32(l.gold);                                    //gold
 
    size_t count_pos = b.wpos();                            // pos of item count byte
    b << uint8(0);                                          // item count placeholder
 
    switch (lv.permission)
    {
        case GROUP_PERMISSION:
        case MASTER_PERMISSION:
        case RESTRICTED_PERMISSION:
        {
            // if you are not the round-robin group looter, you can only see
            // blocked rolled items and quest items, and !ffa items
            for (uint8 i = 0; i < l.items.size(); ++i)
            {
                if (!l.items[i].is_looted && !l.items[i].freeforall && l.items[i].conditions.empty() && l.items[i].AllowedForPlayer(lv.viewer, l.roundRobinPlayer))
                {
                    uint8 slot_type;
 
                    if (l.items[i].is_blocked) // for ML & restricted is_blocked = !is_underthreshold
                    {
                        switch (lv.permission)
                        {
                            case GROUP_PERMISSION:
                                slot_type = LOOT_SLOT_TYPE_ROLL_ONGOING;
                                break;
                            case MASTER_PERMISSION:
                            {
                                if (lv.viewer->GetGroup() && lv.viewer->GetGroup()->GetMasterLooterGuid() == lv.viewer->GetGUID())
                                    slot_type = LOOT_SLOT_TYPE_MASTER;
                                else
                                    slot_type = LOOT_SLOT_TYPE_LOCKED;
                                break;
                            }
                            case RESTRICTED_PERMISSION:
                                slot_type = LOOT_SLOT_TYPE_LOCKED;
                                break;
                            default:
                                continue;
                        }
                    }
                    else if (!l.items[i].rollWinnerGUID.IsEmpty())
                    {
                        if (l.items[i].rollWinnerGUID == lv.viewer->GetGUID())
                            slot_type = LOOT_SLOT_TYPE_OWNER;
                        else
                            continue;
                    }
                    else if (l.roundRobinPlayer.IsEmpty() || lv.viewer->GetGUID() == l.roundRobinPlayer || !l.items[i].is_underthreshold)
                    {
                        // no round robin owner or he has released the loot
                        // or it IS the round robin group owner
                        // => item is lootable
                        slot_type = LOOT_SLOT_TYPE_ALLOW_LOOT;
                    }
                    else
                        // item shall not be displayed.
                        continue;
 
                    b << uint8(i) << l.items[i];
                    b << uint8(slot_type);
                    ++itemsShown;
                }
            }
            break;
        }
        case ROUND_ROBIN_PERMISSION:
        {
            for (uint8 i = 0; i < l.items.size(); ++i)
            {
                if (!l.items[i].is_looted && !l.items[i].freeforall && l.items[i].conditions.empty() && l.items[i].AllowedForPlayer(lv.viewer, l.roundRobinPlayer))
                {
                    if (!l.roundRobinPlayer.IsEmpty() && lv.viewer->GetGUID() != l.roundRobinPlayer)
                        // item shall not be displayed.
                        continue;
 
                    b << uint8(i) << l.items[i];
                    b << uint8(LOOT_SLOT_TYPE_ALLOW_LOOT);
                    ++itemsShown;
                }
            }
            break;
        }
        case ALL_PERMISSION:
        case OWNER_PERMISSION:
        {
            uint8 slot_type = lv.permission == OWNER_PERMISSION ? LOOT_SLOT_TYPE_OWNER : LOOT_SLOT_TYPE_ALLOW_LOOT;
            for (uint8 i = 0; i < l.items.size(); ++i)
            {
                if (!l.items[i].is_looted && !l.items[i].freeforall && l.items[i].conditions.empty() && l.items[i].AllowedForPlayer(lv.viewer, l.roundRobinPlayer))
                {
                    b << uint8(i) << l.items[i];
                    b << uint8(slot_type);
                    ++itemsShown;
                }
            }
            break;
        }
        default:
            return b;
    }
 
    LootSlotType slotType = lv.permission == OWNER_PERMISSION ? LOOT_SLOT_TYPE_OWNER : LOOT_SLOT_TYPE_ALLOW_LOOT;
    NotNormalLootItemMap const& lootPlayerQuestItems = l.GetPlayerQuestItems();
    NotNormalLootItemMap::const_iterator q_itr = lootPlayerQuestItems.find(lv.viewer->GetGUID());
    if (q_itr != lootPlayerQuestItems.end())
    {
        NotNormalLootItemList* q_list = q_itr->second;
        for (NotNormalLootItemList::const_iterator qi = q_list->begin(); qi != q_list->end(); ++qi)
        {
            LootItem &item = l.quest_items[qi->index];
            if (!qi->is_looted && !item.is_looted)
            {
                b << uint8(l.items.size() + (qi - q_list->begin()));
                b << item;
                if (item.follow_loot_rules)
                {
                    switch (lv.permission)
                    {
                        case MASTER_PERMISSION:
                            b << uint8(LOOT_SLOT_TYPE_MASTER);
                            break;
                        case RESTRICTED_PERMISSION:
                            b << (item.is_blocked ? uint8(LOOT_SLOT_TYPE_LOCKED) : uint8(slotType));
                            break;
                        case GROUP_PERMISSION:
                        case ROUND_ROBIN_PERMISSION:
                            if (!item.is_blocked)
                                b << uint8(LOOT_SLOT_TYPE_ALLOW_LOOT);
                            else
                                b << uint8(LOOT_SLOT_TYPE_ROLL_ONGOING);
                            break;
                        default:
                            b << uint8(slotType);
                            break;
                    }
                }
                else
                    b << uint8(slotType);
                ++itemsShown;
            }
        }
    }
 
    NotNormalLootItemMap const& lootPlayerFFAItems = l.GetPlayerFFAItems();
    NotNormalLootItemMap::const_iterator ffa_itr = lootPlayerFFAItems.find(lv.viewer->GetGUID());
    if (ffa_itr != lootPlayerFFAItems.end())
    {
        NotNormalLootItemList* ffa_list = ffa_itr->second;
        for (NotNormalLootItemList::const_iterator fi = ffa_list->begin(); fi != ffa_list->end(); ++fi)
        {
            LootItem &item = l.items[fi->index];
            if (!fi->is_looted && !item.is_looted)
            {
                b << uint8(fi->index);
                b << item;
                b << uint8(slotType);
                ++itemsShown;
            }
        }
    }
 
    NotNormalLootItemMap const& lootPlayerNonQuestNonFFAConditionalItems = l.GetPlayerNonQuestNonFFAConditionalItems();
    NotNormalLootItemMap::const_iterator nn_itr = lootPlayerNonQuestNonFFAConditionalItems.find(lv.viewer->GetGUID());
    if (nn_itr != lootPlayerNonQuestNonFFAConditionalItems.end())
    {
        NotNormalLootItemList* conditional_list = nn_itr->second;
        for (NotNormalLootItemList::const_iterator ci = conditional_list->begin(); ci != conditional_list->end(); ++ci)
        {
            LootItem &item = l.items[ci->index];
            if (!ci->is_looted && !item.is_looted)
            {
                b << uint8(ci->index);
                b << item;
                switch (lv.permission)
                {
                    case MASTER_PERMISSION:
                        b << uint8(LOOT_SLOT_TYPE_MASTER);
                        break;
                    case RESTRICTED_PERMISSION:
                        b << (item.is_blocked ? uint8(LOOT_SLOT_TYPE_LOCKED) : uint8(slotType));
                        break;
                    case GROUP_PERMISSION:
                    case ROUND_ROBIN_PERMISSION:
                        if (!item.is_blocked)
                            b << uint8(LOOT_SLOT_TYPE_ALLOW_LOOT);
                        else
                            b << uint8(LOOT_SLOT_TYPE_ROLL_ONGOING);
                        break;
                    default:
                        b << uint8(slotType);
                        break;
                }
                ++itemsShown;
            }
        }
    }
 
    //update number of items shown
    b.put<uint8>(count_pos, itemsShown);
 
    return b;
}