How to increase skill damage

[Beret]

Hello rathena I am wanting to change some skill, more want to know how can I do the calculation:

Example: In irowiki says that Storm Gust.

The calculation is this:

case WZ_STORMGUST:
   skillratio += 40*skill_lv;
   break;

How does the calculation of skill ?

Another thing is what is the difference between.

skillratio +=

and

skillratio -=

Edited January 31, 2013 by Beret

[goddameit]

skillratio :

skill damage rate, after blabla ( some calculations ) then system will get a value ( for base damage ), now according skill level to increase ( or decrease ) this value.

+= & -= :

Var A += Var B ---> Var A = Var A + Var B

Var A -= Var B ---> Var A = Var A - Var B

< MORE >

Edited January 31, 2013 by goddameit

[Beret]

If I put this way

skillratio += 40; //in this case the damage is increased by 40% correct ?

or

skillratio-= 20; // Now I think I understand it if looks like this would be 40-20 = 20% ?

Edited January 31, 2013 by Beret

[goddameit]

if +40 mean increase 40%, then why -40 not mean decreased 40%?

anyway, think and research first, you don't need to reply so soon.

[Beret]

In the case of skill_lv.

skillratio += 40 * skill_lv; //Each level increases 40%.

and

skillratio -= 40 * skill_lv; //Each level reduces -40%.

One last thing is the following

case WL_FROSTMISTY:
   skillratio += 100 + 100 * skill_lv;
   RE_LVL_DMOD(100); //What do you mean this RE_LVL_DMOD (100) ?
   break;

If I want a skillratio of 400 to 600% as would be ?

Edited January 31, 2013 by Beret

[Helly]

about the skill damage, i nice to do it by source edition, but i think you must try the lilith skill damage manager is easy to handle, some skill can not be edited by that system but are skills like tiger cannon or chain lightning that the formula isnt depends of an unique formula.

http://rathena.org/board/topic/62238-manage-skill-damage-20/

then you can make a calculation of damage based on your server rates, drops etc etc. Is a very useful tool.

[goddameit]

[Beret]

Obliged to all. Now I understand.

Edited February 1, 2013 by Beret