[C++] Windows Drop Bugu ve Random Fixi

// ================================================================================
// 1. ADIM
// Açılacak Dosya: libthecore/src/utils.c (veya utils.cpp)
// ================================================================================

// [ARAT] (Dosyanın en üstündeki include satırlarında)
#include "stdafx.h"

// [ALTINA EKLE]
#include <random>

// --------------------------------------------------------------------------------

// [ARAT]
DWORD thecore_random()
{
#ifdef __WIN32__
    return rand();
#else
    return random();
#endif
}

int number_ex(int from, int to, const char *file, int line)
{
    if (from > to)
    {
    int tmp = from;

    sys_err("number(): first argument is bigger than second argument %d -> %d, %s %d", from, to, file, line);

    from = to;
    to = tmp;
    }

    int returnValue = 0;

    if ((to - from + 1) != 0)
        returnValue = ((thecore_random() % (to - from + 1)) + from);
    else
        sys_err("number(): devided by 0");

    return returnValue;
}

float fnumber(float from, float to)
{
    return (((float)thecore_random() / (float)RAND_MAX) * (to - from)) + from;
}

// [KOMPLE DEĞİŞTİR]
static thread_local std::mt19937 g_rng([]() {
    std::random_device rd;
    return std::mt19937(rd());
}());

DWORD thecore_random()
{
    return static_cast<DWORD>(g_rng());
}

int number_ex(int from, int to, const char *file, int line)
{
    if (from > to)
    {
        sys_err("number(): first argument is bigger than second argument %d -> %d, %s %d", from, to, file, line);
        const int tmp = from;
        from = to;
        to = tmp;
    }

    std::uniform_int_distribution<int> dist(from, to);
    return dist(g_rng);
}

float fnumber(float from, float to)
{
    if (from > to)
    {
        const float tmp = from;
        from = to;
        to = tmp;
    }

    std::uniform_real_distribution<float> dist(from, to);
    return dist(g_rng);
}

// ================================================================================
// 2. ADIM
// Açılacak Dosya: game/src/item_manager.cpp
// ================================================================================

// [ARAT]
    iRandRange = 4000000;
    iRandRange = iRandRange * 100 / 
        (100 + 
         CPrivManager::instance().GetPriv(pkKiller, PRIV_ITEM_DROP) + 
         pkKiller->IsEquipUniqueItem(UNIQUE_ITEM_DOUBLE_ITEM)?100:0);

// [DEĞİŞTİR]
    iRandRange = 4000000;
    iRandRange = iRandRange * 100 / 
        (100 + 
         CPrivManager::instance().GetPriv(pkKiller, PRIV_ITEM_DROP) + 
         (pkKiller->IsEquipUniqueItem(UNIQUE_ITEM_DOUBLE_ITEM) ? 100 : 0));

// ================================================================================
// 3. ADIM
// Açılacak Dosya: game/src/item_manager.cpp
// ================================================================================

// [ARAT]
    // Common Drop Items
    std::vector<CItemDropInfo>::iterator it = g_vec_pkCommonDropItem[bRank].begin();

    while (it != g_vec_pkCommonDropItem[bRank].end())
    {
        const CItemDropInfo & c_rInfo = *(it++);

        if (iLevel < c_rInfo.m_iLevelStart || iLevel > c_rInfo.m_iLevelEnd)
            continue;

        int iPercent = (c_rInfo.m_iPercent * iDeltaPercent) / 100;
        sys_log(3, "CreateDropItem %d ~ %d %d(%d)", c_rInfo.m_iLevelStart, c_rInfo.m_iLevelEnd, c_rInfo.m_dwVnum, iPercent, c_rInfo.m_iPercent);

        if (iPercent >= number(1, iRandRange))
        {
            TItemTable * table = GetTable(c_rInfo.m_dwVnum);

            if (!table)
                continue;

            item = NULL;

            if (table->bType == ITEM_POLYMORPH)
            {
                if (c_rInfo.m_dwVnum == pkChr->GetPolymorphItemVnum())
                {
                    item = CreateItem(c_rInfo.m_dwVnum, 1, 0, true);

                    if (item)
                        item->SetSocket(0, pkChr->GetRaceNum());
                }
            }
            else
                item = CreateItem(c_rInfo.m_dwVnum, 1, 0, true);

            if (item) vec_item.push_back(item);
        }
    }

// [KOMPLE DEĞİŞTİR]
    // Common Drop Items
    std::vector<CItemDropInfo>::iterator it = g_vec_pkCommonDropItem[bRank].begin();

    while (it != g_vec_pkCommonDropItem[bRank].end())
    {
        const CItemDropInfo & c_rInfo = *(it++);

        if (iLevel < c_rInfo.m_iLevelStart || iLevel > c_rInfo.m_iLevelEnd)
            continue;

        int iPercent = (c_rInfo.m_iPercent * iDeltaPercent) / 100;
        sys_log(3, "CreateDropItem %d ~ %d %d(%d)", c_rInfo.m_iLevelStart, c_rInfo.m_iLevelEnd, c_rInfo.m_dwVnum, iPercent, c_rInfo.m_iPercent);

        if (iPercent >= number(1, iRandRange))
        {
            TItemTable * table = GetTable(c_rInfo.m_dwVnum);

            if (!table)
                continue;

            item = NULL;

            if (table->bType == ITEM_POLYMORPH)
            {
                if (c_rInfo.m_dwVnum == pkChr->GetPolymorphItemVnum())
                {
                    item = CreateItem(c_rInfo.m_dwVnum, 1, 0, true);

                    if (item)
                        item->SetSocket(0, pkChr->GetRaceNum());
                }
            }
            else
                item = CreateItem(c_rInfo.m_dwVnum, 1, 0, true);

            if (item)
            {
                vec_item.push_back(item);
                break;
            }
        }
    }