World/Udon Bugs & Feature Requests

As the PlayerData API doesn't support any¹ array types most creators resort to storing all their array elements as individual keys in PlayerData. This means most of the already strict data limit gets consumed by unnecessary and avoidable header. Please add all the UdonSync supported types to the PlayerData API. And for the love of all that is holy bitpack the bool array type before writing it to persistence. ¹ The only array type PlayerData currently supports is byte[] . The fact that we at least have this is great for experienced creators! But it leaves everyone else (who can't write their own serializer) in the dust. It's completely unreasonable to expect the average graph creator to "just" make their own serializer when they hit the currently claustrophobic persistence limits.

This can be an issue when using stations for vehicles with trigger zones. For example, i have a setup where i want audio to enable and disable based on the player location. This works fine with players, but to make it work with those vehicles i would need a second check for the vehicle.

Issue: Currently it's not possible to react to a players voice at all. We don't know when someone is talking or how loud they are for example. This limits us from making games where someone needs to be quiet to hide from an enemy for example. For security reasons it makes sense that we can't just listen to a player voice, which is why I think only giving limited access to it would be fine. Suggestion: Add an isTalking bool to the VRC Player API which is true when voice is detected and false when not. Add a loudness float to the VRC Player API which is a value between 0 and 1 depending on how loud a player is. (Basically how the current Voice parameter works on Avatars) Add a viseme integer to the VRC Player API which would indicate what viseme is currently used. (Basically how the current Viseme parameter works on Avatars) These would allow world creators to integrate player voice into game play while also not just directly giving them access to player voices for security.

FinalIK is whitelisted for SDK3 worlds, but Udon cannot modify anything on these scripts. Checking the example scenes within FinalIK, the helper methods used to set values in the FinalIK scripts are not within the whitelist. Without those helper scripts or methods exposed in Udon, FinalIk can only be used as is and cannot be changed during runtime.

Spline editor and components is one of most exciting new feature for Unity 2022. Now our project has been migrated to 2022, So we are ready to use it! Please expose those components for world creation and Udon VM: ・Spline ・SplineAnimate ・SplineExtrude ・SplineInstantiate It would be better if the Spline package is automatically added to the project when the SDK is imported so that these features are easily accessible.

Allow world creators the ability to moderate their OWN worlds and issue their OWN bans. I'm tired of seeing crashers and exploiters in my worlds and kicking them is nothing. I want the ability to ban certain individuals from my worlds. There is absolutely no harm in doing this. Who is it going to hurt? The exploiters and cheaters. What if world creators abuse it and ban people from THEIR OWN worlds? Well it's their fault their world fails to gather a population. What else will this do? Allow world creators to suit the needs of their wanted audience. it will also help take the stress off of the actually game moderators. Thank you, Lucifer MStar - Creator of 30+ worlds including church of marriages. P.S. Communicate more with your community on what you are doing about these crashers and exploiters and maybe the heat and stress will die down. Honestly this is the most annoying thing communication.

It would be useful if we could get Terrain methods in Udon. Specifically, methods and properties in https://docs.unity3d.com/ScriptReference/TerrainData.html and https://docs.unity3d.com/ScriptReference/DetailPrototype.html .

Checking the equality/inequality of a system-defined enum with equality/inequality operators ( == / != ) will fail. As a result, this example codes in the document don't work as expected: https://creators.vrchat.com/platforms/android/android-best-practices/#2-detect-mobile-players-in-your-world-automatically public override void OnInputMethodChanged(VRCInputMethod inputMethod) { if (inputMethod == VRCInputMethod.Touch) { // Run code for touch input } else { // Run code for non-touch input } } (The UdonGraph version (attached image) also has an identical issue.) Workaround Cast to underlying values and compare them. if ((int)inputMethod == (int)VRCInputMethod.Touch) Analysis UdonSharp compiles the expression inputMethod == VRCInputMethod.Touch into EXTERN, "SystemObject.__Equals__SystemObject__SystemBoolean" Although Object.Equals(Object) is overridden by Enum.Equals(Object) , which the inputMethod may have, with comparing underlying value, this EXTERN seems to call the Object.Equals directly (maybe via reflection API), and it returns the unexpected result (by only comparing the referencing instances). The EXTERN, "SystemObject.__Equals__ comes from here https://github.com/vrchat-community/UdonSharp/blob/22307065bd408dfd163fe46b0b8b701a4efcbc00/Packages/com.vrchat.UdonSharp/Editor/Compiler/Binder/BoundNodes/BoundInvocationExpression.cs#L420 And replacing the System_Object of this line with System_Enum doesn't work because the Enum.Equals is not exposed. Suggestions Temporary, rewrite the example codes using cast operator Expose System.Enum.Equals And replace the EXTERN with System.Enum.Equals

Converting an enum to an int in a method call which takes a DataToken as argument crashes at runtime with error Cannot retrieve heap variable of type 'Int32' as type 'DataToken' . Converting it beforehand does not crash. For example, this crashes: DataList dataList = new DataList(); AnEnum anEnumState = AnEnum.AState; dataList.Add((int)anEnumState); Whereas this doesn't crash: DataList dataList = new DataList(); AnEnum anEnumState = AnEnum.AState; int anEnumStateInt = (int)anEnumState; dataList.Add(anEnumStateInt);

I have encountered a problem related to Unity's DSP chain and Udon. I am planning to create an audio focused world, where I need to implement a custom DSP algorithm on audio that can respond to player behavior/controls in real-time. In the native Unity Mono framework, I can insert custom effects into the audio DSP chain by implementing the OnAudioFilterRead method in MonoBehaviour (see https://docs.unity3d.com/ScriptReference/MonoBehaviour.OnAudioFilterRead.html ). In the UdonSharp documentation, I found that there is a method stub for OnAudioFilterRead in Unity events (see https://udonsharp.docs.vrchat.com/events/ ), so I should be able to implement it. However, it does not work in my Unity setup. I also saw a post on Canny mentioning that a component called OnAudioFilterReadProxy should be automatically added to the object if OnAudioFilterRead is implemented (See: https://vrchat.canny.io/udon/p/order-of-onaudiofilterreadproxy ), but this is not happening on my end. Any idea what could be going wrong with my script or configuration? Or it is a bug? My test code is like the following: using UdonSharp; using UnityEngine; using VRC.SDKBase; using VRC.Udon; public class SimpleSineGenerator : UdonSharpBehaviour { [SerializeField, Range(0, 1)] private float amplitude = 0.5f; [SerializeField] private float frequency = 261.62f; private double phase = 0; private double sampleRate = 48000; public void Update() { // verify that the script is running transform.Rotate(Vector3.up, 90f * Time.deltaTime); } public void OnAudioFilterRead(float[] data, int channels) { // DSP code double phaseIncrement = 2 * Mathf.PI * frequency / sampleRate; for (int i = 0; i < data.Length; i += channels) { phase += phaseIncrement; if (phase > 2 * Mathf.PI) { phase -= 2 * Mathf.PI; } float value = amplitude * Mathf.Sin((float)phase); for (int j = 0; j < channels; j++) { data[i + j] = value; } } } }