Link's Hitbox

// For Link's hit detection. Don't count them if they are stunned or are guys.
int GuyHit(int tx,int ty,int tz,int txsz,int tysz,int tzsz)
{
	//Calculate hitsize and hitoffsets
	if ( Link.getExtend() >= 3 ) {
		tx += Link.getHXOfs();
		ty += Link.getHYOfs();
		//tz += Link.getLinkHitZOffset();
		txsz += ( Link.getHXSz() + Link.getHXOfs() );
		tysz += ( Link.getHYSz() + Link.getHYOfs() );
		//tzsz += Link.getLinkHitZHeight();
	}
    for(int i=0; i<guys.Count(); i++)
    {
        if(guys.spr(i)->hit(tx,ty,tz,txsz,tysz,tzsz))

Are the txsz, and tysx parameters something unusual here? By this, I mean what values are they using as inuts? I see some oddness in calls to this, such as GuyHit(LinkX()+*, LinkY+98), LinkZ(), 2, 2, ...)

Is this vastly different from ordinary rect collision, because the '2' values are off to me.