Trying to make information threads to be stickied (if they sticky anything...). Might as well consolidate everything for people to read before we all afk from this ancient game.

Magic Damage Reduction Bug






Now, you know how it takes away from a physical damage attack, which is the main problem. It is also possible to lose elemental damage if the opponents dr is higher than your dealt physical damage, but I have yet to see that happen (and matter)

Let's talk about ele only attacks, and how mdr effects skills in lld.

The reason why orbers suck so bad at lvl 30:
A lvl 30 orber, without a +5 Frozen orb wand will do 204-218 orb damage (using spirit). Taking an average damage of 211, let's calc the damage.



If the ele damage exceeds the mdr, you go into the next step, which is:



[(211 * .17) - 28] * ((100 - 75)/100) = pvp dmg
[7.87] * (.25) = pvp dmg
1.9675 = pvp dmg per bolt
So, you are doing 1-2 damage per ice bolt, if the user is using vmagi + string and has maximum res after cold mastery.



A breakdown-pic


This post was edited by Cadagan on Aug 28 2011 01:12am

wat

Cada, you're forgetting 'immortal' sorcs for the whole mdr > ele damage. Since energy shield is put into the calculation before interger DR/MDR is calculated, you can pretty easily make your HP total take no damage from some char builds elemental attacks.

That's outside of mdr though. ES absorbs the damage, then the rest is calculated just like what is above.

In short for others:

50% es
212 dmg orb


[(106 * .17) - 28] * ((100 - 75)/100) = pvp dmg
[18.02-28]* ((100 - 75)/100)
[0] * ((100 - 75)/100) = pvp dmg
0 = pvp dmg


to comment on your "integer mdr/dr", the above calculations are not *exactly* correct in game, because Blizzard uses int or integer as their variables. In programming, int does not have decimals, and will just drop off the decimal. In essence, always rounding down. The first Frozen Orb Calc would look like this. I am not exactly sure which variables are int, but this is what I believe to be correct.

[(211 * .17) - 28] * ((100 - 75)/100) = pvp dmg
[7 * (.25) = pvp dmg
1 = pvp dmg per bolt

instead of



This post was edited by Cadagan on Aug 28 2011 02:13am

True, I was just noting it for people looking for why an ES sorc can build to take zero HP damage.

I use the term interger DR/MDR to clearly separate it from percentages, its just something I do because of absorbx and absorb%.

ah ok, I still needed to clarify on my end

np, its just habit for me to do it now, lol. whenever i get into any kind of magic or elemental damage reduction, i immediately use the term.

also, i cant recall for sure, but if your MDR exceeds magic damage done to you, will it heal you or not?

no, just zeros. Although I'm not sure how it would affect absorb if mdr were to cancel it first.

would have no effect, absorb comes last in the damage equation. nothing left = nothing to absorb

never been good with math. when the matter gets too complicated i just ignore it NIHEHEHEHEHEHEHEHEHEHEHEHEHEHEHEHEHEHEHE