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Release 3.8.0

Momo the Monster
Momo the Monster
VRChat Developer

Summary​

Version 3.8.0 adds an Udon interface for the VRChat+ Drone, improves PhysBones, and fixes a variety of minor bugs.

This release went to beta as version 3.7.7.

Fixes & Changes​

  • Added Udon API to access the VRChat+ Drone of players in your world!
  • Improved the content ownership confirmation flow during uploads.
    • The old checkbox was removed in favor of a modal.
    • The modal only appears once per Unity Editor session and content ID.
  • Includes PhysBone dependency sorting as introduced in VRChat client version 2025.1.3.
    • PhysBones and PhysBone Colliders now execute in deterministic order depending on their transform relationships with other Physbones. There is a maximum dependency depth of 8 levels deep.
  • Added an ignoreOtherPhysBones option to PhysBone components.
    • If you enable this option, the Physbone will ignore other Physbones and their affected transforms beneath itself in the scene hierarchy.
    • You should avoid disabling this option. Controlling the same Transform with multiple Physbones may lead to unsupported behaviour.
    • This option is enabled by default. For compatibility, it is disabled for existing avatars.
  • Allowlisted IVRCImageDownload.Dispose() for Udon, allowing you to dispose individual downloaded textures once they're no longer needed.
    • This is an alternative to disposing the entire downloader at once. This makes it easier to set up a rotating carousel of images using an image downloader.
    • For more information, see our documentation for Image Loading.
    • Note that failing to dispose IVRCImageDownload objects can lead to excessive memory consumption of your world over time!
  • Fixed avatar dynamics sometimes not simulating as soon as you enter play mode in avatar projects that have automatic domain reloading disabled.
  • Fixed four benign warning messages that always appeared in World SDK projects.

Changes since 3.7.7-beta.1​

  • Bumped version to 3.8.0 due to a minor breaking change around type signatures in the com.vrchat.dynamics package.
    • Note that the affected functions aren't considered part of the official public API, and may change further in the future.
  • Added "Force Kinematic On Remote" option to VRCObjectSync. Use this for objects that simulate physics only for the owner.
    • As an example, the VRChat Drone uses this option so the owner can calculate physics and collisions, while remote users do not run any physics logic.

Known Issues​

  • In rare cases, you may see an "All pipe instances are busy" error while building. This is a Unity issue - restarting your editor and trying again should fix it.