Ships & Modules

Could someone please provide a link to the formula for ecm effectiveness after optimal range? Eve-U just basically gives two values and doesn't specify if it's linear.

ya , you're wrong . it's like you didn't even read the page you linked ..

So is this curve the answer?

ECM Guru Checking In....

due to the all-or-nothing RNG-Jesus nature of ECM, stay inside your optimal wherever possible.

damps and TD/GD do not have the same kinds of penalties for falloff as ECM.

It's standard falloff mechanics with a binary hit/miss equal to the gunnery formula's hit chance reduction due to falloff.

In math terms, optimal always hits[1], and falloff has a chance of hitting[2] of:

0.5^({\frac{max(0,range-optimal)}{falloff})^2

Or if you want that to not look like **** plug this in:

0.5^{\left(\frac{\textup{max}(0,\textup{range}-\textup{optimal})}{\textup{falloff}} \right )^2}

Here:

https://www.codecogs.com/latex/eqneditor.php

You can see some sample curves generated here. If you really want I'll do one specific to ECM but obviously there isn't one yet. [Edit: now there is. Pick the proper tab. Should be obvious.] Note that you're basically looking at the right half of a normal curve. Wolfram alpha can give you a sense for the family of curves we're talking about here.

So now to [1] and [2], which is ECM-specific.

"Hit" in this case actually means "gets a chance to roll against sensor strength". I actually don't know if this is the right order or not, but basically there are two checks:

1. Does RNG think you rolled high enough to hit a falloff calculation?
2. Does RNG think you rolled high enough to land a jam against the target?

If both pass, congrats, you get to jam someone. If either fails, the cycle fails.

guru has spoken!
all hails to the guru

Eh, ****. I guess I have to spend some time on Sisi. If they've gone and made it a strength decline instead of separate rolls I guess I'll have to modify the discussion. Still, good to know it's due for a test.

i always understood , in falloff , there was a 50/50 roll to see if the jam was attempted . if success , then you'd roll for a jam same as within optimal . here's a link and a table , that shows there is a separate roll , and it scales with distance into falloff .

https://eveinfo.net/wiki/inde~125.htm

Optimal Range and Falloff

Due to the recent ECM nerf, falloff now has a much greater impact than before. Below optimal the jamming probability works as shown above. At optimal+falloff that probability is reduced to half, while at optimal+falloff*2 the probability drops to approximately 0. Between these two values it scales in a non-linear fashion. For reference, consult the following table, where the first value is %distance into falloff and the second value is the chance to hit.

5% 0.998 105% 0.466
10% 0.993 110% 0.432
15% 0.985 115% 0.400
20% 0.973 120% 0.369
25% 0.958 125% 0.339
30% 0.940 130% 0.310
35% 0.919 135% 0.283
40% 0.895 140% 0.257
45% 0.869 145% 0.233
50% 0.841 150% 0.210
55% 0.811 155% 0.189
60% 0.779 160% 0.170
65% 0.746 165% 0.152
70% 0.712 170% 0.135
75% 0.677 175% 0.120
80% 0.642 180% 0.106
85% 0.606 185% 0.093
90% 0.570 190% 0.082
95% 0.535 195% 0.072
100% 0.500 200% 0.063

that is how it used to work, however I think with effectiveness falloff it just lowers the jam strength at longer ranges as previously discussed.