Read character's vit for damage reduction. How?

[aleph075]

I am trying to reduce the defense power by items armor and trying change this:
 

/**
 * RE DEF Reduction
 * Damage = Attack * (4000+eDEF)/(4000+eDEF*10) - sDEF
 * Pierce defence gains 1 atk per def/2
 */
if( def1 == -400 ) /* -400 creates a division by 0 and subsequently crashes */
    def1 = -399;
ATK_ADD2(wd->damage, wd->damage2,
    is_attack_piercing(wd, src, target, skill_id, skill_lv, EQI_HAND_R) ? (def1*battle_calc_attack_skill_ratio(wd, src, target, skill_id, skill_lv))/200 : 0,
    is_attack_piercing(wd, src, target, skill_id, skill_lv, EQI_HAND_L) ? (def1*battle_calc_attack_skill_ratio(wd, src, target, skill_id, skill_lv))/200 : 0
);
if( !attack_ignores_def(wd, src, target, skill_id, skill_lv, EQI_HAND_R) && !is_attack_piercing(wd, src, target, skill_id, skill_lv, EQI_HAND_R) )
    wd->damage = wd->damage * (4000+def1) / (4000+10*def1) - vit_def;   <-------- ///Here///
if( is_attack_left_handed(src, skill_id) && !attack_ignores_def(wd, src, target, skill_id, skill_lv, EQI_HAND_L) && !is_attack_piercing(wd, src, target, skill_id, skill_lv, EQI_HAND_L) )
    wd->damage2 = wd->damage2 * (4000+def1) / (4000+10*def1) - vit_def;

The 4000 constants to 5000. But i want to add a plus damage reduction by users VIT stat (no vit_def)

How can i do that, wich sintaxis?  Or it's not even here in the code?

And, I can't find where is the code that defines vit_def (see photo)

Thx!

 

Edited April 28 by aleph075

[Playtester]

Are you running your server in renewal after all? Because that's the renewal defense code.

There is not a single function that calculates VIT_DEF at the moment, but it's basically calculated right above the code you quoted.

It uses DEF2 from status.cpp as input. Just search for "def2" in that file (calculation depends on bl type).