Block the "silent aim" cheat

[qwrtyp]

hi ,
I do not have much knowledge about modding and scripting, so I will trying until something works.

I had put this part within the Callback_PlayerDamage,

		//call in Callback_PlayerDamage(): (self == victim)
if( checkSilentAim( sMeansOfDeath , self , attacker ) )
    iDamage = 0; 
	

and this just below the end of Callback_PlayerDamage ( )

		checkSilentAim( sMeansOfDeath , victim , attacker )
{
    // check only bullet weapons
    if( sMeansOfDeath != "MOD_HEAD_SHOT" && !isSubStr( sMeansOfDeath , "BULLET" ) )
        return false;

    attackerViewDir = anglesToForward( attacker getPlayerAngles() );
    attackerToVictimDir = vectorToAngles( victim.origin - attacker.origin ); // maybe change the origins here
    angleBetweenDirs = vectorDot( attackerViewDir , attackerToVictimDir ); // returns acos of angle
    maxAngle = aCos( 5 ); // 5 degrees

    if( angleBetweenDirs <= maxAngle )
        return false;

    return true;
}

vectorDot( v1 , v2 )
{
    return v1[0] * v2[0] + v1[1] * v2[1] + v1[2] * v2[2];
} 
	

thus resulted in this error:

		******* Script compile error *******
uninitialised variable ' attacker ' : ( file ' maps / mp / gametypes / sd.gsc ' , line 433 )
*if ( checkSilentAim ( sMeansOfDeath , self , Attacker ) ) 
	

*****************************************
I changed the first "atracker" by "eAttacker" , and server runs. I have no idea if it has any difference.
I did right?
thank you very much for your help, sorry that I can not verify if it worked in practice, because I have no hacks to test.
I think everyone should use it on their servers, it has much of this "silent aim" in cod2 and cod4.