GetRandomPlayerId

stock GetRandomPlayerId() //returns -1 when there are no players connected
{
    new anybodyhere = 0;
    new counter = 0;
    new ids[MAX_PLAYERS];
    for(new i = 0;i<MAX_PLAYERS;i++)
    {
        if(IsPlayerConnected(i))
        {
            ids[counter] = i;
            anybodyhere = 1;
            i++;
        }
    }
    new rnd = random(sizeof(ids));
    if(anybodyhere == 0)
    {
        return -1;
    } else {
        return ids[rnd];
    }
}