[Threshold]

pawn Code:

new bool:Spawned[MAX_PLAYERS];

public OnPlayerConnect(playerid)
{
    Spawned[playerid] = false;
    return 1;
}

public OnPlayerRequestClass(playerid, classid)
{
    Spawned[playerid] = false;
    return 1;
}

public OnPlayerSpawn(playerid)
{
    Spawned[playerid] = true;
    return 1;
}

public OnPlayerDeath(playerid, killerid, reason)
{
    Spawned[playerid] = false;
    return 1;
}

//Commands that you want to be disabled

CMD:mycommand1(playerid, params[])
{
    if(Spawned[playerid] == false) return SendClientMessage(playerid, 0xFF0000FF, "You must be spawned to use this command.");
    //rest of command
    return 1;
}

CMD:mycommand2(playerid, params[])
{
    if(Spawned[playerid] == false) return SendClientMessage(playerid, 0xFF0000FF, "You must be spawned to use this command.");
    //rest of command
    return 1;
}

//etc.