[Zume]

Puedes hacerlo de varias formas, una:

pawn Код:

new UsersOnline;

public OnPlayerConnect(playerid)
{
    UsersOnline++;
    return 1;
}

public OnPlayerDisconnect(playerid, reason)
{
    UsersOnline--;
    return 1;
}

o

pawn Код:

new Logeado[MAX_PLAYERS];

public OnPlayerConnect(playerid)
{
    Logeado[playerid] = true;
    return 1;
}

public OnPlayerDisconnect(playerid, reason)
{
    Logeado[playerid] = false;
    return 1;
}

stock GetPlayersOnline()
{
    new _c;
    for(new i; i != MAX_PLAYERS; i++)
    {
        if(!Logeado[i] || !IsPlayerConnected(i))
            continue;
            
        _c++;
    }
    return _c;
}

y la funciуn estб ahн.