[Stefand]

Only possible with keys from this list:

https://sampwiki.blast.hk/wiki/Keys

pawn Код:

IsKeyJustDown(key, newkeys, oldkeys)
{
    if((newkeys & key) && !(oldkeys & key))  return 1;
    return 0;
}

public OnPlayerKeyStateChange(playerid, newkeys, oldkeys)
{
    if(IsKeyJustDown(KEY_FIRE, newkeys, oldkeys))
    {
        return cmd_engine(playerid,param);
    }
    return 1;
}