Verified BLM Spell Damage Formula!

[Nobusan]

Thanks Kirara for your findings.

I will verify the formula again to make sure I didn't miss anything in the translation. I will update it as soon as I find something.

Great test!

[Kirara]

ESD = [ (IDF * (ESB * SDB)) + SDC ] * MAB <- original

ESD = [ (IDF SDB) + SDC ] * MAB * EB <- probably mroe correct
EB as in elemental bonus, there are more than just the staff to boost elemental bonus, blm af2 pants is an example

[Macht]

Bahamut I'm impressed with your posts. You pointed out just exactly what I was getting the impression was missing from these equations. Doing programming for MUDs and seeing their equations a lot of time they do following something along what you just said. Very nice work on analysing that from a programing perspective.

[csBahamut]

I'm not a programmer, but I have to be able to write progams to do numerical analysis, which includes curve fitting. Getting the correct curve fit to data is VERY important in engineering, especially in Aeronautical Engineering, where peoples' lives depend on it.

Here's a good example of how multiple equations can work for a set of data. Navier-Stokes equations for turbulent flow. A lot of empirical "guessing" has to be done to take care of evalutating certain varriables. Now, based on data from wind tunnels, MANY different ways of finding constants and values for variables. I'd put the equations and such up here, but I left my notebook at home(back in Ohio-In Washington for an internship). Plus, I wouldn't be able to put some of the symbols up here, nor would most people understand what it all means.

I hope you understand what I'm getting at. I'm glad Macht agrees with me(and thanks for the compliment man!).

Kirara did some testing, but that REALLY doesn't constitute a data set. We'd need like at LEAST 50 runs of each situation to remove the randomness added to spell damage(100 or more would be preffered-well, the more the better).

[edit]
Also, due to us not being able to obtain the true equations used(yet), these equations can only be theories, and thus can never be proven to be truely correct. We can only truely prove them to be wrong. Just like any scientific theory.

[Kirara]

1, this is a game, not a science
2, in a more correct term, what you said "curve fitting" should be called "regression" by any chance from math... a subject i did not touch for so long
3, in a programming perspective, there is no expansive calculation involved at all in this equation... what would be truely expansive is the randomness of resistance (probability calculation) and damage enhance probablility from weather and day of the week (which i seriously doubt square use true seeded random for those operations)

[Erasmus]

Sounds like everything was fine until you added the ice staff in the mix. I think you forgot about the +4 int on the ice staff.

That would chage your avg IDF to 69 not 65.

That increases the damage more than you think. After plugging that in, I got MUCH closer to your test results Kirara.

[Kirara]

gee..
4 more int diffrence, by the factor of 2.2 first then 1.47
that makes it a wooping 13 damage difference rounding up

thats if i didn't take off another +4 int equip...
which i did

[Erasmus]

I definately agree the % from staff should be added to the MAB not into the SDB.

With that

1.32(lvl 70) *1.1(staff)*1.05(zenith)*1.05(moldavite) = 1.60083

ESD = [(65*2.2)+506]*1.60083= ~1038.9

Thats only 3.1 dmg from your results, enough to comensate for assumed IDF

[Nobusan]

Kirari can you please list out all the values you used to get those numbers? I think there are some thing wrong in your calculation on the value that was off.

Please list out the following values for that particular calculation.

1. Your INT
2. Monster INT (I assume it is 0)
3. Magic that was casted
4. I assume you said ice staff, zenith, moldavite was equipped
5. Day of the week (Just want to make sure that has no effect)

This will help me understand what might have gone wrong or if there was indeed a mistake in your calculations.

Thanks!

[Kirara]

my int, i forgot, monster int, i don't know
65 is backward calculated from control set of data, the first one with out magic attack bonus

since i used icestaff, i must have used blizzard
i was goign to do thunder but it was earth day so i did blizzard

and no, i can do math fine D;

[BloodRedPoet]

This mombo-jumbo is hurting my head so I am going make this brief. I only have three points to make.

One is that to really understand the math of this complex game you would have to be involve involved in the project of programming it. Right now, all you are saying is totally opinion/guess.

Second is that it is common knowledge that the stats(STR, DEX, INT...ect) affected the minor stats (DMG, Crit rate, Elemental Skill). Is this different for the relation of INT, or just everyone is keeping me in the dark? Your method proves this wrong.

Finally, I know for a fact as my many days of casting spells I often hit caps with certain spells. Like at one point, against a mob with no elemental relation... I could never hit higher with Blizzard II than I did most of the time.

Also, I skipped through all that(I am no math expert)... did you inculde monster weakness/strengths/same relations between the spell and monster? Weapons are Ice type and I was hitting Freeze(Resisted it seems most of the time) without MB(Slow melee XD..) for little over 430 at best. When fighting Beetles(Wind type, weak against Ice and slightly lower level) I was hitting for little more than 800-850. Just had to say that.

[Sheila]

I wonder how much Rune Staff Magic Attack Up is according to your chart? Maybe 0.1

[CarbonFibre]

- WARNING, OFF TOPIC -
Ack bloodredpoet. (Run away!) What was with the annoying ranting in Jeuno the other day?

[AtraposBLM]

Originally posted by CarbonFibre
- WARNING, OFF TOPIC -
Ack bloodredpoet. (Run away!) What was with the annoying ranting in Jeuno the other day?

...rofl...I believe I had something to do with that O.o

[Erasmus]

1) Monster strengths and weaknesses play into resists not damage.

2) Str dex mnd agi vit play NO ROLE whatsoever in elemental skill. Int may or may not add ( invisible) to elemental skill. However, this affects ONLY resists and not dmg.

3) You hitting with tier I for more than tier II is due to your resists. I can assure that that unresisted, tier II will ALWAYS do more dmg than tier I of the same type.