Flex Splines - Somehow trying to connect to random things offscreen

I am facing a weird issue which must be mod related. I am using flex splines, which works great most of the time. Except it now frequently tries to connect belts, pipes, and train tracks to some unknown object(s) at a very specific point on the map that appears to be below ground, even when looking in the opposite direction. This causes the framerate of every player to dip into single-digit until whoever trying to place a spline manages to snap the cursor back to a nearby fondation/floor/wall. And even weirder : blueprints also get built at the same arbitrary-below-ground position on the map -- could it be 0;0;0, maybe? I cleared everything accumulated several times already using the save-edit website, but it keeps placing new blueprints/splines there for some reason. Has anyone else experienced this bug? -- I'll try to record footage of the bug to better highlight what is happening EDIT 2025-04-08: After investigation the bug is in fact caused by the mod SnapOn v1.2.5 (issue patched in v1.2.6)
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Solution:
Fix released
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48 Replies
rakkenti
rakkenti2w ago
I also experience this with any long splines Probably the origin or something yeah
Acxd
Acxd2w ago
cc @Andre Aquila <Aquila Industrial>
rakkenti
rakkenti2w ago
Happens with roads in the road spline mod too
Acxd
Acxd2w ago
If possible, try to reproduce it on a fresh save with only Flex Splines loaded
Dumburger
DumburgerOP2w ago
After testing on a fresh save file, I can confirm the bug is caused by an interaction between the Flex Splines and SnapOn mods. => As soon as SnapOn is enabled, the splines misbehave by going into the ground: https://youtu.be/UGSCyCwWJis
Acxd
Acxd2w ago
cc @SirDigby {Mod Name}
rakkenti
rakkenti2w ago
It's probably snapping to the conveyor that snapon creates Wait now I wonder why even rail splines snap there lol
SirDigby
SirDigby2w ago
That's really weird. SnapOn shouldn't effect anything while just building belts.. Yeah, there is nothing in the code that touches belt holograms
rakkenti
rakkenti2w ago
IIRC it also does it with anything long range, like power connectors Going to test rq
rakkenti
rakkenti2w ago
flexsplines + snapon:
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rakkenti
rakkenti2w ago
removing snapon fixes above ^
rakkenti
rakkenti2w ago
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rakkenti
rakkenti2w ago
odd so anything snappable/connected even powerlines I'm guessing powerlines are splines too
SirDigby
SirDigby2w ago
I'm really at a loss as to what SnapOn could be doing to cause that.
rakkenti
rakkenti2w ago
Might be something that the base game does
Dumburger
DumburgerOP2w ago
I have double-checked for pipes, and rails on my playground, same result : when both Flex Splines and SnapOn are enabled, splines will misbehave https://youtu.be/Av1P-oI7YZA
rakkenti
rakkenti2w ago
im going to try to find where it snapping to lol
Dumburger
DumburgerOP2w ago
The snapping also applies to blueprints somehow, it will "swallow" your buildings if you place a blueprint when looking slightly off the ground
SirDigby
SirDigby2w ago
@Andre Aquila <Aquila Industrial> any idea what the conflict might be?
rakkenti
rakkenti2w ago
It's not flexspline specfici I'm pretty sure I can replicate it with snapon alone* Just have to look really far.. Unless flexspline adds something once at the start Going to check a new save
Acxd
Acxd2w ago
Out of curiosity, could you guys try with Infinite Splines, it's a c++ alternative
rakkenti
rakkenti2w ago
Yup ill check in a sec Gonna try snapon in a fresh save rq
rakkenti
rakkenti2w ago
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rakkenti
rakkenti2w ago
Still snaps to some weird place in the world Somewhere in the forest
SirDigby
SirDigby2w ago
Probably 0,0,0
rakkenti
rakkenti2w ago
Yeah let me check if it might even be a base game issue
SirDigby
SirDigby2w ago
Yeah, I've never seen anything like it
rakkenti
rakkenti2w ago
Odd In base game, it just deletes the whole hologram
SirDigby
SirDigby2w ago
Try verifying your files?
rakkenti
rakkenti2w ago
Does your mod force keep the hologram? Oh I'll try that
SirDigby
SirDigby2w ago
Nope, my mod just does stuff to conveyor attachments like splitters and mergers
rakkenti
rakkenti2w ago
Wait nvm, it does not, just hides the hologram
rakkenti
rakkenti2w ago
It seems to not be an issue from extending spline distance It's just snapping to the origin anytime it can't snap anywhere else (like looking at the sky)
rakkenti
rakkenti2w ago
it did end up being 0,0
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SirDigby
SirDigby2w ago
So I can verify it happens with just SnapOn Going to test a few things
Dumburger
DumburgerOP2w ago
The bug is present when just SnapOn is enabled
SirDigby
SirDigby2w ago
Yeah Found the bit of code causing the issue. It's not what I expected
rakkenti
rakkenti2w ago
Curious now, what was wrong?
SirDigby
SirDigby2w ago
I was saying anything was a valid hit result for conveyor attachment holograms. Idk why it thinks a belt is one of those, though
rakkenti
rakkenti2w ago
That also causes the problems for every other spline?
SirDigby
SirDigby2w ago
Apparently
rakkenti
rakkenti2w ago
Ah, it wasn't even a spline thing, just straight up every buildable
Solution
SirDigby
SirDigby2w ago
Fix released
rakkenti
rakkenti2w ago
Nice!! no more 5fps trying to build my rail network!
Dumburger
DumburgerOP2w ago
Thanks !

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