wip Real-Time Body Physics (DirectX 11)

[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.

[jeno3]

8 hours ago, CPVC said:

 

Try this build here. It might do the trick:

 

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

Hi, is it a D11, or D9 Version? 

[jeno3]

Have you figured out why not all the meshes are working, or what you can do to make them work? I'm afraid I gave you incorrect information. Almost all of them work in CAS, but only one of my CCs is currently working in the game. I think I'll switch back to the old D9 version for now. I have a version of yours that works with almost all the CCs. I'm attaching the file. That way you'll know which version works for me. I'm also attaching the working CC; you have all the others.

 

d3d9_CC.zip

[CPVC]

4 hours ago, jeno3 said:

Have you figured out why not all the meshes are working, or what you can do to make them work? I'm afraid I gave you incorrect information. Almost all of them work in CAS, but only one of my CCs is currently working in the game. I think I'll switch back to the old D9 version for now. I have a version of yours that works with almost all the CCs. I'm attaching the file. That way you'll know which version works for me. I'm also attaching the working CC; you have all the others.

 

d3d9_CC.zip 5.53 MB · 1 download

 

This is a D3D11 version and yes, I did. I add another ray for breast detection that works with a lot of your mods and other mods with low, breasts that don't protrude much. This one is placed low, under the breasts, and is directed upward in the positive Y direction.

 

To enable this second ray, add "tryAltBreastRays = true" to your settings file under the "[rtbp.debugFlags]" section. If the second doesn't exist, create it, just paste the following at the end of your "Settings.ini" file:

 

[rtbp.debugFlags]
tryAltBreastRays = true

 

It hasn't been tested much that's why it's disabled by default.

 

Are you using the version with the GUI and logo enabled? The first couple of people that tried that couldn't get it to run. Have you had any success with it?

[HentaiGai]

Just want to say that I have been playing just about all day with the latest experimental DX 11 version (No Logo, No GUI) and it has been working great for me! Thank you so much for your hard work on this, really appreciate you!!!

[jeno3]

51 minutes ago, CPVC said:

 

This is a D3D11 version and yes, I did. I add another ray for breast detection that works with a lot of your mods and other mods with low, breasts that don't protrude much. This one is placed low, under the breasts, and is directed upward in the positive Y direction.

 

To enable this second ray, add "tryAltBreastRays = true" to your settings file under the "[rtbp.debugFlags]" section. If the second doesn't exist, create it, just paste the following at the end of your "Settings.ini" file:

 

 

[rtbp.debugFlags]
tryAltBreastRays = true

 

 

It hasn't been tested much that's why it's disabled by default.

 

Are you using the version with the GUI and logo enabled? The first couple of people that tried that couldn't get it to run. Have you had any success with it?

 

55 minutes ago, CPVC said:

 

This is a D3D11 version and yes, I did. I add another ray for breast detection that works with a lot of your mods and other mods with low, breasts that don't protrude much. This one is placed low, under the breasts, and is directed upward in the positive Y direction.

 

To enable this second ray, add "tryAltBreastRays = true" to your settings file under the "[rtbp.debugFlags]" section. If the second doesn't exist, create it, just paste the following at the end of your "Settings.ini" file:

 

 

[rtbp.debugFlags]
tryAltBreastRays = true

 

 

It hasn't been tested much that's why it's disabled by default.

 

Are you using the version with the GUI and logo enabled? The first couple of people that tried that couldn't get it to run. Have you had any success with it?

 

You're awesome, thank you so much!  I'll test it later.

 

I think I wasn't using the version with the GUI and logo. The d3d11 version I used was created around October 18th.  I'll test the latest version tomorrow and give you feedback.

[CPVC]

Oh, I should mention that you should expect the physics to be slightly different in this build of RTBP. Turns out I miscalculated the space in which the physics take place. My initial calculations were on the assumption that sims were larger than they actually are. Now that that is corrected, you can expect the physics to be a little more intense.