[ExtendedCarbon]

I would suggest removing the weapon check if(GetPlayerWeapon(playerid) != 29) and just set the players armed weapon to 0 when they enter a car at all.

Like this

Код:

public OnPlayerStateChange(playerid, newstate, oldstate)
{
    if(GetPlayerState(playerid) == PLAYER_STATE_DRIVER || GetPlayerState(playerid) == PLAYER_STATE_PASSENGER)
    {
   		SetPlayerArmedWeapon(playerid, 0);
    }
    return 1;
}

This code works, so whenever someone gets inside any seat of a car their weapons are set to fists.