Çözüldü warning: comparison between signed and unsigned integer expressions hatası

void  CHARACTER::PointChange(BYTE type, int amount, bool bAmount, bool bBroadcast)
{
    int val = 0;

    //sys_log(0, "PointChange %d %d | %d -> %d cHP %d mHP %d", type, amount, GetPoint(type), GetPoint(type)+amount, GetHP(), GetMaxHP());

    switch (type)
    {
        case POINT_NONE:
            return;

        case POINT_LEVEL:
            if ((GetLevel() + amount) > gPlayerMaxLevel)
                return;

            SetLevel(GetLevel() + amount);
            val = GetLevel();

            sys_log(0, "LEVELUP: %s %d NEXT EXP %d", GetName(), GetLevel(), GetNextExp());

            PointChange(POINT_NEXT_EXP,    GetNextExp(), false);

            if (amount)
            {
                quest::CQuestManager::instance().LevelUp(GetPlayerID());

                LogManager::instance().LevelLog(this, val, GetRealPoint(POINT_PLAYTIME) + (get_dword_time() - m_dwPlayStartTime) / 60000);

                if (GetGuild())
                {
                    GetGuild()->LevelChange(GetPlayerID(), GetLevel());
                }

                if (GetParty())
                {
                    GetParty()->RequestSetMemberLevel(GetPlayerID(), GetLevel());
                }
            }
            break;

        case POINT_NEXT_EXP:
            val = GetNextExp();
            bAmount = false;    // 무조건 bAmount는 false 여야 한다.
            break;

        case POINT_EXP:
            {
                DWORD exp = GetExp();
                DWORD next_exp = GetNextExp();

                // 청소년보호
                if (LC_IsNewCIBN())
                {
                    if (IsOverTime(OT_NONE))
                    {
                        dev_log(LOG_DEB0, "<EXP_LOG> %s = NONE", GetName());
                    }
                    else if (IsOverTime(OT_3HOUR))
                    {
                        amount = (amount / 2);
                        dev_log(LOG_DEB0, "<EXP_LOG> %s = 3HOUR", GetName());
                    }
                    else if (IsOverTime(OT_5HOUR))
                    {
                        amount = 0;
                        dev_log(LOG_DEB0, "<EXP_LOG> %s = 5HOUR", GetName());
                    }
                }

                // exp가 0 이하로 가지 않도록 한다
                if (amount < 0 && exp < -amount)
                {
                    sys_log(1, "%s AMOUNT < 0 %d, CUR EXP: %d", GetName(), -amount, exp);
                    amount = -exp;

                    SetExp(exp + amount);
                    val = GetExp();
                }