wip Real-Time Body Physics (DirectX 11)

[aardin]

5 hours ago, CPVC said:

 

Hmmm, missing sim parts usually means a simulator has gone out of control. Since this issue appears to happening at crotch height, it makes me think it's something to do with the dick simulator. The dick simulator has been unmaintained and untested, mostly because I forget it even exists, so it could be buggy. Try disabling it and see what happens.

 

In your settings file, set "enableBallsPhysics" to false.

Hi CPVC, i just tried this but unfortunately it had no effect. All sims get this effect randomly, Male, Female and children.

[CPVC]

15 hours ago, aardin said:

Hi CPVC, i just tried this but unfortunately it had no effect. All sims get this effect randomly, Male, Female and children.

 

Darn. Well, I forgot to backup the source code for the version you're running, v0.4-p9-e1, so try switching to this build here. This is the absolute latest build of the DX9 version. If the problem persists, I'll have the code to troubleshoot it further.

 

RTBP v0.4-p9-e3 2025-12-11.zip

[aardin]

On 12/12/2025 at 10:14 AM, CPVC said:

 

Darn. Well, I forgot to backup the source code for the version you're running, v0.4-p9-e1, so try switching to this build here. This is the absolute latest build of the DX9 version. If the problem persists, I'll have the code to troubleshoot it further.

 

RTBP v0.4-p9-e3 2025-12-11.zip 8.76 MB · 2 downloads

Hi CPVC, Thanks for this. I removed all reference to RTBP from both my docs and the bin folder then installed the latest dx9 version along with this new dll file. then disabled ball physics again, this has pretty much stopped all the flicker of vertices on sims. Unfortunately random sims do still have holes in them. The holes are only there while the sim is dressed, when naked they are ok.

I have attached a new log for you.

Log.rar

Edited December 14, 2025 by aardin

[CPVC]

7 hours ago, aardin said:

Hi CPVC, Thanks for this. I removed all reference to RTBP from both my docs and the bin folder then installed the latest dx9 version along with this new dll file. then disabled ball physics again, this has pretty much stopped all the flicker of vertices on sims. Unfortunately random sims do still have holes in them. The holes are only there while the sim is dressed, when naked they are ok.

I have attached a new log for you.

Log.rar 22.1 kB · 1 download

 

Your log file does say that the dick simulator is still active. Make sure "enableBallsPhysics" is set to "false". I'll continue going over your log file and see if I find something unusual.

[aardin]

3 hours ago, CPVC said:

 

Your log file does say that the dick simulator is still active. Make sure "enableBallsPhysics" is set to "false". I'll continue going over your log file and see if I find something unusual.

i just checked my ini files (which one does it look at?, there is one in Documents\Electronic Arts\The Sims 4\RTBP and 1 in  Game\Bin\RTBP, both have it off, see attached ini file (i just set it to off in one then copied over the other to make sure when i re-installed it)

Settings.rar

[CPVC]

14 hours ago, aardin said:

i just checked my ini files (which one does it look at?, there is one in Documents\Electronic Arts\The Sims 4\RTBP and 1 in  Game\Bin\RTBP, both have it off, see attached ini file (i just set it to off in one then copied over the other to make sure when i re-installed it)

Settings.rar 436 B · 0 downloads

 

 

Oh, I see what's happening here. The boolean values are case sensitive, so "False" needs to be lower case for it to register. Replace "False" with "false". That ought to do the trick.

 

And the correct file is the one in "...\Documents\Electronic Arts\The Sims 4\RTBP\". You can delete "...\Game\Bin\RTBP\". That is not longer used.

 

[aardin]

23 hours ago, CPVC said:

 

 

Oh, I see what's happening here. The boolean values are case sensitive, so "False" needs to be lower case for it to register. Replace "False" with "false". That ought to do the trick.

 

And the correct file is the one in "...\Documents\Electronic Arts\The Sims 4\RTBP\". You can delete "...\Game\Bin\RTBP\". That is not longer used.

 

This seems to have lessened the issue, but i am still getting random holes, attached is my log file and a few more examples.

RTBP.rar child with hole.rar

[Rekonomics]

Keeping an eye out for the dx11 update. Love the mod cpvc. I ran the preview dx11 for days with only a minor glitch with the butt but for some reason it gave out tonight and started flickering on the drop shadows for sims really bad. Tried a lot to fix it, but couldn’t get the preview back to how well it was running yesterday. Thanks so much! Can’t wait for the update!

[CPVC]

On 12/15/2025 at 3:58 PM, aardin said:

This seems to have lessened the issue, but i am still getting random holes, attached is my log file and a few more examples.

RTBP.rar 204.17 kB · 2 downloads child with hole.rar 1.04 MB · 1 download

 

Well, darn. I'll see what I can do with the information in your log files. Thanks.

 

On 12/17/2025 at 6:47 AM, Rekonomics said:

Keeping an eye out for the dx11 update. Love the mod cpvc. I ran the preview dx11 for days with only a minor glitch with the butt but for some reason it gave out tonight and started flickering on the drop shadows for sims really bad. Tried a lot to fix it, but couldn’t get the preview back to how well it was running yesterday. Thanks so much! Can’t wait for the update!

 

Thanks! Fixing the shadows is my number one priority. I fixed the mirror issue just the other day, so with the shadows fixed I think we've got an official (non-experimental) release on our hands.

[yokozii]

On 12/18/2025 at 6:59 PM, CPVC said:

 

Well, darn. I'll see what I can do with the information in your log files. Thanks.

 

 

Thanks! Fixing the shadows is my number one priority. I fixed the mirror issue just the other day, so with the shadows fixed I think we've got an official (non-experimental) release on our hands.

will this release work with reshade ? T_T lol 

[CPVC]

17 hours ago, yokozii said:

will this release work with reshade ? T_T lol 

 

Oh right, I need to re-enable that. Thanks for the reminder.

 

Edit: Works like a charm!

Edited December 21, 2025 by CPVC

[CPVC]

Ok, I'm getting real close to releasing this. I've fixed the mirror and shadow issues and added ReShade support. The remaining little bugs are mostly unnoticeable or rare and I can work on fixing them later.

 

If you're up for it, try it out and let me know what you think.

 

RTBP v2.0-e1 2025-12-21.zip

 

Edited December 22, 2025 by CPVC

[alexlll]

The game doesn't start with this version.Log.txt

[CPVC]

4 hours ago, alexlll said:

The game doesn't start with this version.Log.txt

 

Interesting, something to do with the logo... Try redownloading and installing, setting "showLogoAtStartup" to "false" in your settings file, and try again. Thanks!

[aardin]

Not to Necro alexIII's post, but i just tried this and the game starts with a brief flash of white screen then exits with the new DX11 dll for me too. here are my log and ini.

RTBP.rar

[CPVC]

14 minutes ago, aardin said:

Not to Necro alexIII's post, but i just tried this and the game starts with a brief flash of white screen then exits with the new DX11 dll for me too. here are my log and ini.

RTBP.rar 1.62 kB · 0 downloads

 

Your error is very similar. Try disabling the logo: "showLogoAtStartup" -> "false".

[aardin]

1 hour ago, CPVC said:

 

Your error is very similar. Try disabling the logo: "showLogoAtStartup" -> "false".

I tried that as well, thats the result i got after i disabled the logo, i put a copy of my ini in the archive as well

[alexlll]

это не помогло

 

 

 

Log.txt

Edited December 22, 2025 by alexlll

[CPVC]

1 hour ago, aardin said:

I tried that as well, thats the result i got after i disabled the logo, i put a copy of my ini in the archive as well

 

Whoops, didn't see that. Alright, try this one:

 

RTBP v2.0-e1 2025-12-22 (No Logo, No GUI).zip

[Rekonomics]

31 minutes ago, CPVC said:

 

Whoops, didn't see that. Alright, try this one:

 

RTBP v2.0-e1 2025-12-22 (No Logo, No GUI).zip 1.23 MB · 2 downloads

Thanks, CPVC! This one opened up! Going to test it out, super excited! 

[aardin]

2 hours ago, CPVC said:

 

Whoops, didn't see that. Alright, try this one:

 

RTBP v2.0-e1 2025-12-22 (No Logo, No GUI).zip 1.23 MB · 2 downloads

I thought that may have been the case :), i just tried it, and with the exception of some sims having vertex's shooting around it seems to work great. see the attached video for the issue (sorry about the brightness, i haven't played The Sims in DX 11 for ages and have to change the HDR brightness setting for the game again), i'll keep testing and see if i find anything else.

Recording 2025-12-22 195016.rar

Log.txt

Edited December 22, 2025 by aardin

[CPVC]

24 minutes ago, aardin said:

I thought that may have been the case :), i just tried it, and with the exception of some sims having vertex's shooting around it seems to work great. see the attached video for the issue (sorry about the brightness, i haven't played The Sims in DX 11 for ages and have to change the HDR brightness setting for the game again), i'll keep testing and see if i find anything else.

Recording 2025-12-22 195016.rar 20.23 MB · 1 download

Log.txt 76.03 kB · 0 downloads

 

Yeah, that's a known issue. It seems to be kinda rare and it usually happens with children.

 

Adults appear to be working well for the most part. I'm hoping I have a eureka moment and discover the cause of all these seemingly related issues. All of them seem to stem from the bones offset changing between vertex shaders. Instead of making everyone wait, I thought it would be best to take care of the more glaring issues and have everyone just live with the small glitches for the time being.

 

If any of you can live without butt physics, disabling that seems to fix just about everything.

 

As for the issues you and alexIII were facing, they appeared to be identical but manifested in different areas. For alexIII, the logo caused the problem. For you it was with the internal GUI. Something to do with shaders.

 

The build you're running now has both disabled, but I'd like to get that fixed because the GUI is pretty important and I'd like to replace the Commander with the internal GUI eventually.

[CPVC]

3 hours ago, alexlll said:

it didn't help

 

 

 

Log.txt 3.68 kB · 1 download

 

Try this build here. It might do the trick:

 

RTBP v2.0-e1 2025-12-22 (No Logo, No GUI).zip

[aardin]

1 hour ago, CPVC said:

 

Yeah, that's a known issue. It seems to be kinda rare and it usually happens with children.

 

Adults appear to be working well for the most part. I'm hoping I have a eureka moment and discover the cause of all these seemingly related issues. All of them seem to stem from the bones offset changing between vertex shaders. Instead of making everyone wait, I thought it would be best to take care of the more glaring issues and have everyone just live with the small glitches for the time being.

 

If any of you can live without butt physics, disabling that seems to fix just about everything.

 

As for the issues you and alexIII were facing, they appeared to be identical but manifested in different areas. For alexIII, the logo caused the problem. For you it was with the internal GUI. Something to do with shaders.

 

The build you're running now has both disabled, but I'd like to get that fixed because the GUI is pretty important and I'd like to replace the Commander with the internal GUI eventually.

No problems, and you are correct, it is mostly children with that issue, altho i did see 1 or 2 Adults with an occasional flicker, and also saw some flickers in water refelections, i can live with those small issues. If there is anything i can do to help let me know, i may not know how to build dll's but i am an old modder from way back on numerous different games. 

[alexlll]

Everything worked without the logo.