Calculating Passive Percents

[Dominus_Noctis]

posted on October 21st, 2010, 2:19 am

Last edited by Dominus_Noctis on October 21st, 2010, 8:13 pm, edited 1 time in total.

OFFTOPIC! : (i didn't wanted to start a new thread for it)

Can somebody enlighten me, how the math(damage reductions) works when a medium range support ship fights an ADAI ship?

Dom edit: Split from Star Trek Armada II: Fleet Operations - K'tinga rush too powerful?

posted on October 21st, 2010, 2:40 am

Intrepidz
classlabel = "phaser"
sprite = "weapon_phaser"
damagebase = 8.608

"kli_qawduj.odf" 3.379


Qaw'duj

classlabel = "phaser"
sprite = "weapon_disruptor"
damagebase = 7.802

"fed_intrepidZ.odf" 6.767

[Anonymous]

posted on October 21st, 2010, 2:45 am

Last edited by Anonymous on October 21st, 2010, 2:47 am, edited 1 time in total.

It works like any other passive.  Take the attacking ship's base, multiply it by 1.24, then multiply by around .69-.70.  The defensive passive is calculated last.

Let's take fedW_remoore10

Base damage=17.458
Damage listed to a dom_destroyer=15.142


The Damage reduction ratio for ADAI using a bug vs a medium that's not a support is .6924945552, so it's not a nice round number.

So, the math for the remore phaser vs the bug is 17.458x1.24=21.64792
21.64792x.6924945552=14.99106673.

It's not quite the same, but that's probably due to rounding errors with my calculator.  It depends on significant digits as well, and I'm not sure what Optec's using for all that.  But we're talking about a tiny fraction of a difference.

So remember with damage calculations:  Base * any offensive boost * the ratio of damage the defensive passive lets you use.  So defensive passives trump offensive passives in this regard since they get calculated last.

Edit:  The error might be in the 1.24 as well, as I just took that from the guide, but the guide rounds the actual numbers, because who cares about or wants to read about a .672395783295 difference?

posted on October 21st, 2010, 3:00 am

The calculation order doesn't matter in multiplication.

[Anonymous]

posted on October 21st, 2010, 3:43 am

Last edited by Anonymous on October 21st, 2010, 6:41 pm, edited 1 time in total.

Don't you have another poll to make about how ship M is WAY too powerful? 

So as Neb pointed out, when you have them in nice, neat ratios, it doesn't matter, but I would say it's still more intuitive to increase the base value by its offensive bonus and then multiply by the ratio it is reduced to.

I want to clean up the numbers a bit, and I did find out what the precise bonus is for the support's bonus.

Here's some numbers you don't care about

(Norway) 16.308/(Bug) 13.02=1.252534562.  This is the precise damage increase ratio for for support vs ADAI without any interfering passives.  Rounded this is roughly 25%.

ADAI damage reduction ratio previously done=.6924945552.  So a medium ranged ship does around 69% damage to an ADAI ship

Intrepid (damage to Norway)/Intrepid (base damage)=.3925418216.  So around 39% of base damage is what an intrepid will do to a norway.

These are the 3 modifiers when we calculate damage done to or received by an ADAI ship by a remore or Qawduj or c-11 or C-17 or Generix support

So back to the remore vs the Bug.  Base damage is 17.458.  Damage to a bug is 15.142 (This is the number we want to end up with to check the math)

17.458x1.252534562 is equal to 21.86674838.  Take that times .6924945552 and you get 15.1426042.  It apparently doesn't get rounded up, or it's a significant digits difference when they do the calculations, but you can chop off all the numbers past the thousandths place and get 15.142, which is what we wanted.

And I'm sure someone can do the math of an ADAI ship attacking a support and find out that the ratio is correct there to.

Ok, now I feel happy that the numbers are right, and can sleep soundly.

posted on October 21st, 2010, 10:46 am

yep, damage modification stack by multiplication, not by addition like one might imagine. two abilities with a 30 percent damage boost dont end up with a 60 percent damage bost

posted on October 21st, 2010, 5:50 pm

yep, damage modification stack by multiplication, not by addition like one might imagine. two abilities with a 30 percent damage boost dont end up with a 60 percent damage bost

Fascinating .

  I do wonder how exactly multiple factors work in when something like a Defiant goes up against a T-15.

posted on October 21st, 2010, 6:40 pm

It should still be base * 1.5 * .9 * .5 * .8 = Damage the defiant does to the T-15.  I'll have to do the calculation over again now that you've brought it up. >:(

I recommend this topic be split, because it's pretty useful for people to understand how the passives interact.  Maybe entitle it "How do passive modifications stack?" starting with Elim's good question.