As an avid Skyrim modder and programmer, I‘ve followed the Skinned Mesh Physics modding scene closely over the years. In this guide, I‘ll provide an in-depth look at how SMP mods leverage Skyrim‘s powerful Havok engine to deliver insanely realistic physics simulations for character models and armor.
Strap yourself in – we have a lot to cover!
A Quick Intro to SMP Mods
Let‘s start with a high-level overview of what SMP mods do:
SMP stands for "Skinned Mesh Physics" and refers to a category of mods that add advanced physics to character meshes in Skyrim. As you play, these mods will make body parts like breasts, buttocks, hair, and armor bounce, sway, and collide realistically.
Under the hood, SMP mods use the Havok physics engine that‘s built into Skyrim. Havok provides cutting-edge rigid body dynamics and collision detection. SMP mods creatively harness this tech for new use cases like breast physics.
Now let‘s get into the nitty-gritty!
Understanding Havok Physics Integration
SMP mods connect Havok physics to character meshes through a multi-step process:
1. Attaching physics objects – The mod developer attaches invisible rigid body objects to relevant body parts like breasts. These act as the "physics handles".
2. Constraint system – The physics objects are then constrained to character bones using a variety of joint types – hinges, ball-and-sockets, etc. This anchors the objects firmly to bones.
3. Configuring collisions – Complex collision shapes are defined for the physics objects to interact realistically with themselves and the environment during gameplay.
4. Parameter tuning – Various settings control stiffness, elasticity, damping and other behavioral aspects of the physics objects. Mod authors fine-tune these parameters to achieve realistic motion.
5. Animating the mesh – As physics objects move, the character mesh skinning deforms to match their positions smoothly. This brings the static character mesh to life!
Advanced SMP mods like HDT-SMP expose many tweakable parameters to users – gravity strength, stiffness, wind direction etc. This allows customizing physics to your preferences.
A Look at Popular SMP Mods
There are several major SMP mods that extend Skyrim‘s capabilities in different ways:
HDT-SMP: The most popular SMP mod which adds physics to hair, breasts, buttocks and other body parts. Includes advanced collision detection and stabilization features.
OSex/OSA: Pioneering mod that adds detailed physics simulations for genitals and sex. Used as a foundation for many adult mods.
CBPC: CBBE Physics mod with skinned-based physics for the CBBE body. More performance friendly compared to HDT.
3BBB: Adds physics and enhanced animations for CBBE breasts and buttocks. A popular companion for CBPC.
Each mod has extensive configuration options accessible via INI files and Morphs in BodySlide. Learning to tune these settings is key to getting great results.
Installing and Configuring SMP Mods
Installing SMP mods takes some work but the mindblowing results are worth it! Here‘s an overview of the process:
Requirements
- SKSE – Enables mods to hook into Skyrim
- XPMSSE – Advanced skeleton with extra bones
- Body Mods – CBBE, UNP etc.
- FNIS – For generating animations
Installation Steps
- Download mod files manually or via mod manager like Vortex, MO2
- Install requirements like SKSE, body mods, XPMSSE, FNIS
- Extract SMP mod files into Data folder
- Adjust load order for compatibility
- Build custom physics INI and slider settings
- Run Generactors like FNIS, BodySlide
- Test and tweak further until satisfied!
With all these pieces in place, you‘ll be able to enjoy superbly realistic physics in your Skyrim characters!
Optimizing Performance of SMP Mods
The advanced physics of SMP place greater demands on your PC. As more NPCs with SMP features appear on screen, the performance impact compounds. Here are some tips to optimize SMP performance:
Keep actor count reasonable. Use mods like Immersive Patrols cautiously.
Adjust Havok threads in SKSE. Start with 4 or 5 threads.
Reduce physics object vertex counts where possible.
Use actor fixing mods to freeze distant NPC physics.
Adjust quality presets and sync settings in the SMP Configuration spell.
Execute "SMP Reset" console command to clear memory if needed.
Custom INI tweaks to constrain physics objects, distances, etc.
With some trial and error to find the sweet spot between eye-candy and playability, you can make SMP mods run smoothly even on mid-range rigs.
Evolution of Nude Mods – From Morrowind to SMP
SMP owes its existence to the long evolution of nude mods in Bethesda games. Let‘s take a quick look back:
Morrowind – The first mods replaced underwear with nudity textures. Mesh edits were limited.
Oblivion – Better meshes allowed breast and penis physics using rigid bodies. Havok integration began.
Fallout 3 – Advances like jiggle bones brought more fluid movement to breasts and buttocks.
Skyrim (Legacy) – HDT pushed tail and hair physics to new levels. Breast and butt simulations improved further.
Skyrim (SSE) – With SKSE64 and updated tools, SMP delivers the most advanced simulations yet for hair, breasts, genitals and more.
Each generation brought incredible innovations by leveraging new rendering techniques and physics capabilities. SMP represents the current pinnacle achieving unprecedented realism.
Adult Gaming and Controversies Surrounding SMP Mods
Of course, SMP mods cater heavily towards adult themes given their focus on nudity and intimate animations. This has sparked intense discussion around:
- Increased prevalence of adult content in gaming mods
- Lack of clarity around platforms‘ moderation policies
- Concerns about exposure to mature content
- Arguments around artistic freedom vs. responsibility
The numbers reveal a clear trend – adult mod authors are now among the most popular and profitable on Patreon, earning thousands of dollars a month. With adult gaming gaining momentum, deliberations around themes, accessibility, and moderation will likely continue.
I aim to provide a fair perspective – while some creations may seem overly-ambitious to some, for others this is a harmless route to enjoyment. There are also practical considerations – mods should be appropriately categorized and labelled so users can make informed choices. Overall, it is a complex issue with reasonable arguments on all sides. The mod community will hopefully use this as an opportunity for constructive dialogue.
My Take as a Tech Expert and Gaming Enthusiast
As a programmer and lifelong gaming enthusiast, it has been incredible watching mods like SMP push the boundaries of what‘s possible by tapping into powerful game engines in creative ways.
While SMP has origins in adult mods, I believe it represents bigger themes that resonate with all gamers:
- The joy of transforming and enhancing your gaming experience through mods
- Channeling passion into mastery of complex tools like Havok and SKSE
- Collaborating with a community to build something collectively amazing
- Expressing creativity by adapting engines like Skyrim‘s in unintended ways
For me, SMP represents the best of what makes modding special – a testament to the human imagination. Seeing mods turn static game assets into dynamic worlds that react and come alive is nothing short of magical.
While players will debate themes and genres, I think most of us can agree – mods like SMP have taken some beloved games into whole new frontiers. I can‘t wait to see what modders come up with next!
So there you have it – my deep dive into the world of Skinned Mesh Physics mods! Let me know in the comments if you have any other topics you‘d like me to cover. I live for this stuff 🙂
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