BBSIK Addon
Inverse kinematics in BBS mod
About this Mod
An addon for the BBS mod that adds Inverse Kinematics to models.
This addon is 99% vibecoded and is in the very early stages of development. Save your world and models before using it. I left my player model along with a mod file that makes it easy to test the addon's capabilities.
Current features:
- User interface inside the form editor in the General section at the bottom. All changes you make through the user interface go to the model's config.json.
- Toggle IK for the model.
- Adding Chain, Locator, Bones, PoleVector, and Constraints.
- Selecting a algorithm to chain: CCD, FABRIK, or CONSTRAINED-FABRIK.
- Weight parameter in the replay editor in pose keyframes.
Known issue:
- When moving close to bone and pole vector boundaries, uncontrolled, unstable rotations occur.
All questions, reports, and assistance are available through the bbs mod Discord server. https://discord.gg/NpNvNtyrrH
Available Versions
How to Install BBSIK Addon on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.20.1).
Install Mod
Open the mod browser in the dashboard and search for "BBSIK Addon". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.20.1
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
BBSIK Addon server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.20.1). You can switch loaders with one click in the panel.
Is BBSIK Addon compatible with fabric?
BBSIK Addon officially supports fabric for Minecraft 1.20.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with BBSIK Addon – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if BBSIK Addon consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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