Fux'ui.

stock AddItem(playerid, itemid, amount = 1)
{
        new empty, bool:finded, have = -1;
    Loop(i, MAX_ITEMS)
    {
        if(pInfo[playerid][Item][i] == 0 && !finded)
        {
            empty = i;
                finded = true;
        }
        else if(pInfo[playerid][Item][i] == itemid)
        {
                have = i;
        }
    }
    if(have == -1) // jeigu ntr pns itemo
    {
            if(finded) // jeigu yra laisvas slot'as
            {
            pInfo[playerid][Item][empty] = itemid;
            /* Cia pagal vsk turetu but kiekis */
            pInfo[playerid][Kiekis][empty] = amount;
        }
        else
        {
                /* Nera laisvu slot'u */
        }
    }
    else // tuo paciu item'u uzimtas kitas slot'as
    {
            /* Cia pagal vsk turetu but kiekis */
            pInfo[playerid][Kiekis][have] += amount;
    }
    return 1;
}