TruePhysbones

Live PhysBone Preview in Edit Mode

See exactly how your VRCPhysBones will move, without entering play mode. Tune pull, spring, stiffness, gravity, limits, and per-bone curves while a faithful simulation of your actual bone chain reacts in real time.

Preview everywhere you work

• Inspector preview panel: a live animated 3D viewport right under the VRCPhysBone inspector. Drag a slider or curve key and watch the motion change instantly.
• Scene-view ghost: a non-destructive overlay simulation drawn over your avatar. Drag the avatar around and the ghost trails, swings, and settles.

Testing, testing, testing

• Interactive grab with the real FABRIK solve: angle limits, stretch, posing. Release with Pose on and the chain holds its shape, exactly like in-game.
• Looping test motions: sway, gust, circle, drop.
• Play any AnimationClip in edit mode and watch hair and skirts react to the actual dance or walk.
• Live animator outputs — see _Angle, _Stretch, _Squish, _IsGrabbed, _IsPosed update every frame. No more wiring parameter-driven effects blind.
• NEW: Edit Pull, Spring, Stiffness, Gravity, Immobile, and other per-bone curves in a familiar Unity-style curve editor. The preview shows exactly where each bone samples the curve, and updates while you edit.
• Preview the colliders assigned to each PhysBone, or enable a temporary test collider and move it around the Scene view without adding anything to your avatar.
• Grab the physbone preview joints directly from within the scene!

Accurate.

• Built from scratch to closely reproduce VRChat PhysBone behavior, including PhysBone 1.0 and 1.1, Simplified and Advanced integration, limits, collisions, stretching, squishing, grabbing, posing, and animated transforms.
  

Requirements
Unity 2022.3 · VRChat Avatars SDK ≥ 3.10.4

How do I report issues?
Check the product's purchase note in the jinxxy inventory for how to report bugs.

Will the addon be supported post-launch with updates and bugfixes?
TruePhysbones will continue to receive long-term support for the foreseeable future, and it will be ported to Unity 6 when VRChat releases a compatible SDK. Existing customers won't have to pay separately for the Unity 6 version.

You may use TruePhysBones in your personal and commercial projects, anything you create with it is fully yours with no restrictions and no attribution required. The tool embeds nothing in your content, so avatars you sell or commission never require your buyer to own a copy.
You may not redistribute, resell, share, alter, or decompile the tool itself. Full terms in LICENSE.md.