World/Udon Bugs & Feature Requests

I am in the early process of designing a game show world using Udon. It would be incredibly awesome if Udon exposed Unity's JsonUtility so that I could load metadata for a session of the game simply by pasting a JSON string into Unity.

In SDK3 2021.03.22.18.27, SendCustomNetworkEvent was updated to work in editor, by bypassing the SendCustomNetworkEventHook. In doing this, it allowed networked events to work overall, but does not block events that begin with an underscore as the VRChat client does. Please add an editor only implementation of SendCustomNetworkEventHook instead of removing the code that calls it. This way extensions like CyanEmu can also handle extra details. Example graph tested without CyanEmu: application/vnd.unity.graphview.elements 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

To reproduce: Create a behaviour with ExecutionOrder -100000 Create a child of it with another behaviour with no execution order overrides Create a behaviour with ExecutionOrder -100000 and NO child objects as a control Create a new separate behaviour with ExecutionOrder +100000 Add a log to Start() to keep track of it Expected result: Behaviours with -100000 to log first Behaviours with no override to log second Behaviours with +100000 to log third What actually happens: Behaviours with -100000 and NO children log first Behaviours with no override log second Behaviours with +100000 log third Behaviours with -100000 WITH children log fourth Repro world: https://vrchat.com/home/world/wrld_f43e6a53-97c2-4a6b-88af-60612f4b3cce This also creates another large issue If you also try to disable those -100000 objects (with Default children) via the +100000 Start() method - the -100000 behaviour will enter a broken state where it will never initialize or receive any events no matter what. You can toggle them on and off after - no methods will ever fire I have created a test world that illustrates the above: https://vrchat.com/home/world/wrld_06ab5f32-ffbe-44dd-9930-b3b28074fcfd Checking the logs when loading in - you'll see a bunch of objects logging OnEnable (the ones that report withChild False ), and a bunch of Default objects which are children of other -100000 objects. Then they will all get disabled by the +100000 behaviour. Clicking the sphere enables those -100000 parents, but they never log either Start() or OnEnable

World persistency would increase usability since old in-world settings could load automatically when the user re-visits the same world later. As worlds get more and more complex, this is no longer a "nice to have" feature - it is now absolutely needed to make a more complex world playable (such as playing a long story through like "The Devouring" for people who don't stay 4+ hours in a single world in VR or in case VRChat crashes while playing it). But it is also needed for grinding mechanics and worlds where you can build something and farm resources - something we are currently working on. Tl;dr, either VRChat gives us a [StoreToDisk] string datatype (without a weird character limit) that saves to disk when it changes and loads again when the user joins the same world or we'll have to implement our own open-source solution reading debug log files and a third-party application running on people's PCs to send Ctrl+V to the window handle (as other world creators have already done it). But either way, we definitely can't go on without a solution here and the current "ask a VR user to copy+paste a string" is not a good way to do it - especially since it's not crash-safe, so users lose all progress when VRChat disconnects the user randomly. But also since we still don't have a "Copy to clipboard"/"Paste from clipboard" function next to a TextInput field for whatever reason, something that would be extremely useful for VR users in general anyway. Ideally, an instance could also specify to only load the progress from whoever created it, since it's not possible right now to know who's the instance creator in Udon, but that's only a minor follow-up issue.

VRChat is working on a new feature for the Worlds SDK titled "Example Central." The feature is not finished yet and may change before the final release. Examples Central gives World creators access to a variety of SDK examples. You can browse the list of examples or use the search. The initial examples focus on Persistence and the Creator Economy. Example Central makes it easier for VRChat to release new examples without updating the SDK. Examples are easy to import into your project. Each example comes with documentation on ask.vrchat.com to learn more or to discuss the example with other creators.

Texture and Sprite variables could be useful. Currently you can use Materials to do stuff with textures / hold references, but this could make it simpler. I do not expect GetPixels or GetNativeTexturePtr. The most useful thing is the ability to hold variables of texture types. However, read or read/write (for *RenderTexture) access to properties such as width, height, depth etc. could be useful.

I want to make a remote control that responds to joystick inputs while it's being held -- but it would be confusing if someone picked up the remote in their left hand but had to operate it with their right joystick. I could make it listen to BOTH joysticks, but then they would have none left to navigate with. So, I want to be able to know (in Udon) which hand the pickup is being held in, so that I can decide to respond to only those inputs; it could be either as an argument to OnPickup, or just as a property that an Udon script can look at. Is there any way to do this?

VRChat SDK version 3.2.0 Newtonsoft Json version 2.0.2 VRCJson.TryDeserializeFromJson("{\"key\":{\"nestedKey\":\"{\"}}", out DataToken token) returns false. Braces are valid inside a string value in JSON, so it should return true.

Summary: Today's security update caused the Texture2D constructor in the VRChat client to no longer accept most texture formats, making it impossible to generate textures. This issue also broke world assets developed by myself and other community members. I strongly request this be corrected. Environment: PC(Windows) version , VRChat client 2024.3.1p4, build 1494. (It does not occur on the Unity Editor.) Code that reproduces the error: var texture = new Texture2D(1024, 1024, TextureFormat.DXT1Crunched, false, false); Error message: See Image1 Texture format where the error occurs (not all): DXT1Crunched DXT1 DXT5Crunched DXT5 BC7 ARGB32 (but RGBA32 is OK) Affected assets (not all): PolygonLoading (my assets) Load 3D Model is breaked. See Image2 Japan Street https://vrchat.com/home/launch?worldId=wrld_02cb84c8-446a-484b-b52b-2c1777e55f8d Load posters and world are breaked. See Image3 and more... (Tiharuum - ちはるーむ , CatsUdon TRPG Home) Lastly: I don't know what the relationship is between restricting texture formats and security, but my asset "PolygonLoading" is used by many users and 3D modelers, and there is no workaround for this problem, so If not resolved, the asset will be unavailable for further use. Please fix it.

Users have requested useful types that should be added to Udon. Here are a few types that VRChat is working on adding: Array.Sort System.Random StringBuilder System.Type ( IsSubclassOf(), IsInstanceOfType(), and baseType and GetElementType() )