new AntiOnFootCrash[MAX_PLAYERS char];

public OnPlayerConnect(playerid)
{
    AntiOnFootCrash{playerid} = 0;
    return 1;
}

public OnPlayerUpdate(playerid)
{
    new Float:x, Float:y, Float:z;
    GetPlayerCameraFrontVector(playerid, x, y, z);
    if(floatcmp(x, -1.0) == -1 || floatcmp(x, 1.0) == 1
    || floatcmp(y, -1.0) == -1 || floatcmp(y, 1.0) == 1
    || floatcmp(z, -1.0) == -1 || floatcmp(z, 1.0) == 1)
    {
        if(AntiOnFootCrash{playerid};)
            Kick(playerid);
        else
            AntiOnFootCrash{playerid}=1; //ложный вызов из-за старых данных.
        return 0;
    }
    return 1;
}