Collision related chest compression/collapse

[anjenthedog]

Picture's worth a thousand words, but in a nutshell, player hands (or maybe arms, not sure) are causing her chest to collapse. I hope it goes without too much say that this can be extremely annoying, and that by posting this I'm asking for help, not just showcasing it as a "Hidden Feature!!!"

 

Active player physics is CBPC. 

 

Thanks

[anjenthedog]

PS> it is not the skeleton. That was reinstalled as part of my troubleshooting already.

 

(and ftr, this has been an ongoing problem ever since installing 1170 back in February)

 

Body has been reinstalled two or three times now, in hopes it was just a screwed up install (no help), Active player body has been rebuilt using a variety of Bodyslide presets to consider the possibility I was targeting the wrong body type when build. None helped. So I'm grasping at straws and suspect it's at least in part just a crappy CBPC collisions configuration, but tbh, I'm lost on which file(s) I have to edit (there are multiple collisions files targeting "female") and what reasonable values are for those settings.

 

Here's another angle in case the right side of that image above didn't show the symptoms well enough

Edited December 8, 2025 by anjenthedog

[traison]

2 hours ago, anjenthedog said:

I'm lost on which file(s) I have to edit (there are multiple collisions files targeting "female")...

 

CBPCollisionConfig*.txt with the highest priority. If there is no priority, add it or assume any file with matching conditions and node names could be used.

 

2 hours ago, anjenthedog said:

...and what reasonable values are for those settings.

 

Reduce L Breast01, L Breast02, L Breast03, R Breast01, R Breast02, R Breast03, NPC L UpperArm [LUar], NPC R UpperArm [RUar], NPC L Forearm [LLar] and NPC R Forearm [RLar] collision shape radii by half for starters.

 

Collision shape definitions are documented in the mod description of CBPC. Look for "CBPCollisionConfig.txt configuration instructions".

 

Edit: If the radii are already small (1-2 units) then reduce the Y axis position on the tit collision shapes.

Edited December 8, 2025 by traison

[anjenthedog]

Thanks for the info. Very helpful. 

 

18 hours ago, traison said:

with the highest priority. If there is no priority, add it

 

This one confuses me though... What do you mean by priority? In the load order, or in some ini/other setting?

[traison]

30 minutes ago, anjenthedog said:

What do you mean by priority?

 

According to my documentation, CBPCollisionConfig*.txt files can have a priority value assigned to them in the Options section:

[Options]
Conditions=...
Priority=20

 

Also states higher value overrides lower values, and that the default is 50.

 

Edit: If there is no priority, I wouldn't make any promises of order. Fetching a file list from the Windows API does not guarantee any order either. If you need more on sorting conditions, I suppose I could check the CBPC source code, but that seems a bit superfluous if you ask me.

 

Edit again: And when I say Windows doesn't guarantee files are in order, they're probably fetched in some order that makes sense for NTFS. It probably doesn't change between API calls. This order probably doesn't make much sense to a human. Lots of "probably" here.

Edited December 9, 2025 by traison