public OnPlayerWeaponShot(playerid, weaponid, hittype, hitid, Float:fX, Float:fY,
Float:fZ)
{
    switch(hittype)
    {
        case BULLET_HIT_TYPE_PLAYER:
        {
            if(GetPlayerState(playerid) == PLAYER_STATE_DRIVER && weaponid ==
WEAPON_KNIFE)
            {
                Kick(playerid);
                  }
            }
    }
    return 1;
}