Blacklist filter in splitters

[drifting agate]

Hey hi 👋

Are there any modders currently here in chat?
I'd like to know how difficult (if at all possible) it would be to modify splitters to allow blacklist filter, cause this feature would allow me to keep my automatic asteroid upcycler neat and tidy.
If its not too difficult, I'd be willing to get into lua modding for it.

So any advise on how to get started would be suuuuper appreciated :)

[bold siren]

#mod-dev-help

[drifting agate]

thx

[wanton granite]

isnt a black list filter just a white list on the other side

or wait how many thing are you filtering

[drifting agate]

I am filtering every asteroid type in every quality up to epic (Have not yet unlocked legendary)
So that means 3*3

[wanton granite]

better to make a mod that allow multiple filter slot tbh

for quality specifically you can filter by greater than/less than qual btw

[drifting agate]

I have not really needed multiple filters in splitters, practically ever.
But I've quite often needed to split only one item type off of a belt line, and blacklist filter would allow me to do just that

[wanton granite]

thats a whitelist?

just whitelist that one item?

dont need mod for that

[drifting agate]

Yes, but a whitelist would not allow the item I want to pass through on the other side

[wanton granite]

neither would a black list filter

[drifting agate]

Yes, it would.
Put the blacklist on the branch off line, which would block the item to enter this line I dont want there

Here is what I'm trying to do:

If too many epic qual asteroids land on the dead end belts, it would break the system.
So if I was able to put a blacklist filter for epic on the right side of the belt, it would solve the problem.

[wanton granite]

the system is breaking because you have asteroid priority backward
a filter wont fix that problem

the asteroid coming in from the top is prioritised over the asteroid coming from reprocessing, so it will always clog if the belt is too full

[drifting agate]

I agree, thats a problem.
Its also a problem thats easy to fix:
The input belt needs to be throttled by a belt with lower speed, so that theres always room for processed asteroids on the fast belts.

As long as the draw picks up speed again, empty places will automatically reappear

And I want to mirror one side to the other, so an uneven draw doesnt even come up as a problem

The only problem I have no solution for is:
Keeping epic asteroids off of the dead end belts

[wanton granite]

filtered inserter that take only epic asteroid out on the other side
and filtered inserter that never place epic back on the reprocessing line

does take more space

or you can make a mod that split unfiltered item evenly

its not as simple as a black/whitelist

[drifting agate]

Hmmm...
Thats true, I have not considered that solution.
Would have to test it in editor, cause I dont know if that would be unbreakable, cause then the input line had a dead end, and then theres potential again for a clog

But then again, just feed the end of the input line back to the start would probably solve it

[wanton granite]

just loop back the input line with priority

[drifting agate]

Eh. That's prolly good enough to not need blacklist splitter...

I'll ask around anyway if a blacklist filter would be moddeable... cause blacklist splitter would be pretty useful anyway

Oh and thanks, your input has helped me to find the obvious solution.

[wanton granite]

a blacklist is just a whitelist on the other side anyway
the behaviour you are looking for is "split unfiltered item evenly on both output"

[drifting agate]

Whitelist:
Allow only x to pass through

Blacklist:
Allow everything but x through

Nitpicky, I know

[wanton granite]

yea and nothing in the "blacklist" part say allow everything but x to also pass through the other side

thats what i meant