[Vince]

You can move stuff away from the main thing if you implement an OnPlayerWeaponChange callback.

pawn Код:

public OnPlayerUpdate(playerid)
{
    if(IsPlayerNPC(playerid)) return 1;

    // ----- Stuff that needs constant checking -----
    
    // ----- OnPlayerWeaponChange -----
    static
        oldWeapon[MAX_PLAYERS char];
    new
        newWeapon = GetPlayerWeapon(playerid);
        
    if(newWeapon != oldWeapon{playerid})
    {
        OnPlayerWeaponChange(playerid, newWeapon, oldWeapon{playerid});
        oldWeapon{playerid} = newWeapon;
        return 1;
    }

    // Rest of stuff
}

pawn Код:

public OnPlayerWeaponChange(playerid, newweapon, oldweapon)
{
    // check if newweapon = 38, 39 ...
    return 1;
}

As long as you're not doing loops or extensive calculations you should be fine.