Procedural Penis Animations/Collision [Beta]

[asdt123123]

1 hour ago, flatearthertom3 said:

Tested it a bit: it works great for human males with sos when im in cbpc mode, but when i switch back to SMP smp collisions are dead even for creatures. Would be cool if this could be turned on and off in the future so it could be used alongside SMP as an option.

Creatures I'm aware of, will be fixed. 

What do you mean switch back to SMP though? As in you make the anus/vagina collide with SMP rather than CBPC? I could make a hotkey to toggle this system on/off if needed, but I would like more context into what you're talking about since it might be easily fixable.

 

59 minutes ago, friendlygaint said:

Can't test it atm but how does this work for male x male if the animation says vagina? (since i turn gender tags off) would it also support other mods like high poly head for male character? thanks

The gays of Loverslab will need to fill me in more with male on male stuff. I wasn't even aware males had anus bones. I could switch to anus only mode if an actor is missing vagina bones fairly easily. And you guys will need to be the testers lol

However I'll need to re-write the orifice handling if people want it to support multiple different body types at once. 

[BeefyJackal]

1 hour ago, asdt123123 said:

Ehh right now it only uses Sexlab for finding actors involved in scenes, and the tags. Sooo should be easy? Do people use SexLab and Ostim on the same save or...? 

 

Only issue is I've never used it, so I would have to read their code line by line to figure out how to get the active scenes, tags, etc. Then I would have to spend more time testing it.

 

So official statement is: Not planned for ALPHA releases, but it's something I can look into after this mod is stable. 

 

Next update you'll be able to configure the offsets and what not. So if some kind soul does that, and provides it here I can add it as an option. 

Players can use Sexlab and Ostim at the same time yes. I prefer not as Ostim is more than enough for me. I've even seen mods that have some kind of checking mechanisim inside it that will see if player is using either ostim or sexlab, often preffering sexlab over ostim, but works on both. One such mod is  https://www.nexusmods.com/skyrimspecialedition/mods/108246

[flatearthertom3]

3 minutes ago, asdt123123 said:

Creatures I'm aware of, will be fixed. 

What do you mean switch back to SMP though? As in you make the anus/vagina collide with SMP rather than CBPC? I could make a hotkey to toggle this system on/off if needed, but I would like more context into what you're talking about since it might be easily fixable.

 

The gays of Loverslab will need to fill me in more with male on male stuff. I wasn't even aware males had anus bones. I could switch to anus only mode if an actor is missing vagina bones fairly easily. And you guys will need to be the testers lol

However I'll need to re-write the orifice handling if people want it to support multiple different body types at once. 

Ah right sorry, the way I have CBPC installed is with 3BA + UBE. Not sure which mod (I think 3ba) adds a hotkey that lets you switch between an SMP and a CBPC setup. For SMP I use SMP for everything yes but you can also tune it to have certain parts rely on SMP vs CBPC, and then in CBPC mode only CBPC is used with the exception of armor/clothing/hair. 

So it would be pretty great if I could turn this mod on, only when the CBPC config is running, and off when the SMP is on so it doesnt break SMP collisions. I might be using something wrong of course, I have a pretty heavy load order with SMP Flex instead of FSMP and some insane combo of UBE smp configs.

[friendlygaint]

12 minutes ago, asdt123123 said:

The gays of Loverslab will need to fill me in more with male on male stuff. I wasn't even aware males had anus bones. I could switch to anus only mode if an actor is missing vagina bones fairly easily. And you guys will need to be the testers lol

However I'll need to re-write the orifice handling if people want it to support multiple different body types at once. 

 

We've got himbutt, it's a bit.....out of date but it basically grabs 3ba's anus and implants it into the himbo body, same bones 4 anus bones except (if it matters) they're not accurate to the mesh unlike 3ba's is but testing it in game it does have collision etc so it should be feesable

[Mizusawa_omega]

i use 3ba and ube anus, why cant penis insert anus?

[asdt123123]

10 minutes ago, flatearthertom3 said:

Ah right sorry, the way I have CBPC installed is with 3BA + UBE. Not sure which mod (I think 3ba) adds a hotkey that lets you switch between an SMP and a CBPC setup. For SMP I use SMP for everything yes but you can also tune it to have certain parts rely on SMP vs CBPC, and then in CBPC mode only CBPC is used with the exception of armor/clothing/hair. 

So it would be pretty great if I could turn this mod on, only when the CBPC config is running, and off when the SMP is on so it doesnt break SMP collisions. I might be using something wrong of course, I have a pretty heavy load order with SMP Flex instead of FSMP and some insane combo of UBE smp configs.

So just to confirm, if you're sexing an actor and being penetrated with SMP anus/vagina. It doesn't open at all? Not even my mod is able to open it? 

 

Or do you mean it outright breaks all collisions on SMP, even breast/etc. 

 

 

[asdt123123]

4 minutes ago, Mizusawa_omega said:

i use 3ba and ube anus, why cant penis insert anus?

Idk you need to elaborate lol. Upload your body .nif here too so I can see if they use different bone names for whatever reason. 

 

If you mean 3BA is offset, yes that's currently a problem which will be solved very soon. 

[Mizusawa_omega]

 

6 hours ago, love2nino said:

but only vagina

i use erin race too, and only vagina. anal doesnt work

[Mizusawa_omega]

3 minutes ago, asdt123123 said:

Idk you need to elaborate lol. Upload your body .nif here too so I can see if they use different bone names for whatever reason. 

 

If you mean 3BA is offset, yes that's currently a problem which will be solved very soon. 

 

Erin.rar

[asdt123123]

13 minutes ago, friendlygaint said:

 

We've got himbutt, it's a bit.....out of date but it basically grabs 3ba's anus and implants it into the himbo body, same bones 4 anus bones except (if it matters) they're not accurate to the mesh unlike 3ba's is but testing it in game it does have collision etc so it should be feesable

I've added an anus failover if the actor doesn't have vagina bones. I assume that will work...?

You WILL have to manually update the anus/vagina positions though in the config. I'll post a detailed tutorial on how to do that. It's super easy. 

[Mizusawa_omega]

5 minutes ago, asdt123123 said:

Idk you need to elaborate lol. Upload your body .nif here too so I can see if they use different bone names for whatever reason. 

 

If you mean 3BA is offset, yes that's currently a problem which will be solved very soon. 

my english poor. this is situation: when i play the "anal" tag scene, penis still insert vagina. and this mod cant change collision to anal after install your mod.

 

[asdt123123]

14 minutes ago, Mizusawa_omega said:

 

Erin.rar 5.91 MB · 0 downloads

That body has a pretty messed up rig. However it does contain the bones this mod needs. Alpha1 wont be able to project that anus properly, so in the next release it should work fine for you (Might have to fix the offset in the config). 

 

10 minutes ago, Mizusawa_omega said:

my english poor. this is situation: when i play the "anal" tag scene, penis still insert vagina. and this mod cant change collision to anal after install your mod.

 

That mod is dynamically re-writing the CBPC configs. Like physically changing your cbpc config lol. Interesting. 

But it should work perfectly fine with this mod. 

Edited December 31, 2025 by asdt123123

[Mizusawa_omega]

Just now, asdt123123 said:

That body has a pretty messed up rig. However it does contain the bones this mod needs. Alpha1 wont be able to project that anus properly, so in the next release it should work fine for you (Might have to fix the offset in the config). 

i will be waiting for upadte, this mod is amazing

[Dragneel013]

Great mod, i'll wait for updates while in the meantime i'll use softbody.

[friendlygaint]

20 minutes ago, asdt123123 said:

I've added an anus failover if the actor doesn't have vagina bones. I assume that will work...?

You WILL have to manually update the anus/vagina positions though in the config. I'll post a detailed tutorial on how to do that. It's super easy. 

 

Thanks a lot

[tonitrulupus]

Quote

This is largely a prototype I threw together in a few hours. So there will likely be bugs. Very early release. No time right now to fully flesh it out and test. So test and LMK whether it works or is fucked up. 

This looks like its going to be a good addition, other then the odd curve in your sample gif, ( I do get you can only do so much with what we have in this game, but till looks great) it looks great. The biggest issue I have is I normally run a Bosmer, they are short in stature, most animations don't work well with petite PCs, normal height is have at a .88 to .93, I use Kaidan for one of my followers, I believe that have him set at 1.10 roughly, so any thing will look odd lol

 

That being said, I think you have a good start on your mod and I will be watching. keep up the good work!

[vizz98]

Tested with 3BA + TNG, working as intended! Idk about anal cause I never use it. Good job mate can't wait for further updates!

[flatearthertom3]

2 hours ago, asdt123123 said:

So just to confirm, if you're sexing an actor and being penetrated with SMP anus/vagina. It doesn't open at all? Not even my mod is able to open it? 

 

Or do you mean it outright breaks all collisions on SMP, even breast/etc. 

 

 

Your mod works when I switch to CBPC. In SMP mode no collision happens yes.  I'll have to check the other things, I think breast, butt other stuff worked, only vagina collision was dead for me.

Edited December 31, 2025 by flatearthertom3

[asdt123123]

32 minutes ago, flatearthertom3 said:

Your mod works when I switch to CBPC. In SMP mode no collision happens yes.  I'll have to check the other things, I think breast, butt other stuff worked, only vagina collision was dead for me.

Ok not SUPER bad. You can try the new version I just released. Might fix SMP support..? Otherwise there's likely not much I can do since like I said before - SMP uses simulated bones and doesn't really give af about skyrim's bones. 

 

40 minutes ago, tonitrulupus said:

 other then the odd curve in your sample gif, ( I do get you can only do so much with what we have in this game, but till looks great)

What's wrong with the curve..? The penis will enter the vagina/anus, then it will curve to follow it's canal. I thought it was pretty realistic. Little stronger of a curve then you'd see irl, but I don't think it'd anything to worry about? Technically I can change the algorithm a bit more to treat the vaginal canal more like soft-tissue structure rather than essentially an M&M cylinder but some of these animations are so offset and there's so  many body shapes to support the cock might stab through an actor's back or what not. 

[billypnats]

works very well but notice fps drop when changing stages for about a second

[poppyan]

18 hours ago, asdt123123 said:

Procedural Penis Animations/Collision [Alpha 0.0.1]

View File

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(Please read the page and don't mindlessly download?)
Physics mod that procedurally animates the penis, and adds visual collision to the anus and vagina (Like CBPC does). It's designed to work perfectly with CBPC - actually I didn't test without CBPC even.. 

 

The penis will now properly be pushed into either the vaginal, or if the scene is tagged as "anal" the anus. It will then follow the vaginal canal or anal.. canal? Large intestine?  Meaning that if an animation is offset, the penis will still find it's home! However, if the animation is super offset, obviously don't expect a miracle. 

 

This is largely a prototype I threw together in a few hours. So there will likely be bugs. Very early release. No time right now to fully flesh it out and test. So test and LMK whether it works or is fucked up. 

 

I ONLY tested this on the UBE body, and the latest AE Skyrim version

https://i.gyazo.com/268f81efa9245ef7a4601e702746a545.mp4

 

 

Requirements:

• Address Library
• Crash Logger: Not required, but just get it. It's amazing
• CBPC: Possibly needed idfk
• Skyrin SE or AE.
• Sexlab (This is a sexlab mod, disables outside of sexlab scenes)
• A modern Skyrim body like 3BA, or UBE with anus/vagina bones that aren't shit

 

Features:

• The penis will now be fully procedurally animated and properly enter and follow another actors orifices during sexlab scenes
• Like CBPC, the anus and vaginal will now have penetration physics. However unlike CBPC, these depend on your SexLab scene's tags to avoid the anus opening during Vaginal intercourse.. 
• DISABLES animations controlling the anus and vaginal bones (Like Billy's animations opening the anus). It just doesn't look good. 
• Properly aligns the penis with the orifice it's going to penetrate. Just by design..

 

 

COMPLETELY UNTESTED:

• Sex with non-humans. Not tested at all, Lmk if it works..
• Man on man. No clue what bones they got. Maybe it works? You'll need to edit the accurate-penetration.json to enable male handling though
• Futa/Strap on. Again, zero testing. I assume it works if they've got the same schlong bones.
• No CBPC mod. Should work, although the orifaces might not close out-of-scene without CBPC. LMK..
• Normal Sexlab. I only tested Sexlab P+
• 3BA, UNP, etc. I only tested UBE
• Schlongs of Skyrim alternatives. If they use the HAVOK animation system for moving the schlong and not some rat system it should work. 

 

Potential problems:

• This mod expects very accurate bones to calculate where the vagina/anus holes are and what not. On UBE they were offset, so I resorted to vector projection for some of the physics. IF the holes are inaccurate, just let me know and maybe show a video. Provide your body type, and please make sure the body is up to date with the latest skeleton.
• If your body doesn't contain the bones this mod expects, you'll need to find them and put them in the /skse/plugins/accurate-penetration.json config. 
• If you use SMP physics for the anus/vagina there's undoubtedly going to be problems. SMP uses simulated bones, not skyrim's. Therefor it's going to probably look a little fucked. 
• If the penetrating actor's penis is 100 feet long - it's probably not going to work right. 
• Penis morphs that don't physically move the bones too aren't going to work right. 

 

Planned features:

• Procedurally animate oral animations too. So no more getting a cock up your nose or through your eye.
• More configuration
• Non-human support (Maybe if they got the same bones..)
• Better gangbang support

 

Reporting bugs:

Crashed? Use Crash Logger SSE. Have weird animations? Show a video, gif, maybe a screenshot will suffice. Penis not lining up? Tell me your body type, and show some screenshots and what not. Also make sure you verify it happens with every animation. 

---

• Submitter
  asdt123123
• Submitted
  12/30/2025
• Category
  Sex Effects
• Requirements
   
• Regular Edition Compatible
  No
• Install Instructions
   

 

Hope u will test on HIMBO body. 

 

[billypnats]

tested on a few animations for riekling and can't notice any difference 

nvm just saw the log

Edited December 31, 2025 by billypnats

[tonitrulupus]

39 minutes ago, asdt123123 said:

The penis will enter the vagina/anus, then it will curve to follow it's canal.

Yeah never seen a pecker bend at almost a 90% LOL. but still a lot of that has to do with alinement of the characters and that only because of the limitation of the game. Don't misunderstand me, its a lot better looking then a pecker sticking out the PC/NPCs gut or back like they have been impaled, which is horrible. 

 

Are you going to do oral as well? or does it  work for it as well? a peck sticking out the back of the skull looks horrifying lol!

[asdt123123]

5 minutes ago, tonitrulupus said:

Yeah never seen a pecker bend at almost a 90% LOL. but still a lot of that has to do with alinement of the characters and that only because of the limitation of the game. Don't misunderstand me, its a lot better looking then a pecker sticking out the PC/NPCs gut or back like they have been impaled, which is horrible. 

 

Are you going to do oral as well? or does it  work for it as well? a peck sticking out the back of the skull looks horrifying lol!

Oral will be added when the mod is in a stable state. Unfortunately it's not going to help mods like this:

because SMP runs right after havok, and before my mod. Meaning SMP will be using Havok's penis position not mine. 

[tonitrulupus]

13 minutes ago, asdt123123 said:

Oral will be added when the mod is in a stable state. Unfortunately it's not going to help mods like this:

I don't use that mod, so I guess that's a good thing? 

Cool, I do look forward to it. I am just glad someone is doing a mod like this. Like I said, I will be watch your mod, I can see great things from it.