World/Udon Bugs & Feature Requests

Maybe this has been the case since VRChat supported SteamVR Input 2.0. Regarding the OnInputMethodChanged(VRCInputMethod inputMethod) argument, on smartphones and desktop PCs, it has the expected values such as VRCInputMethod.Touch and VRCInputMethod.Keyboard. Touch and VRCInputMethod.Keyboard. On the other hand, many VR controllers seem to have unified to VRCInputMethod.SteamVR2. This means that there is no longer a way to distinguish mainstream Vive Wand/Quest/Pico/INDEX controllers, etc. from Udon. This means that automatic tuning according to the characteristics of each controller is impossible. Are there any plans to fix this?

When adding [UdonBehaviourSyncMode(BehaviourSyncMode.NoVariableSync)] to an udon# class, It will just continue using the last setting. For example if you add [UdonBehaviourSyncMode(BehaviourSyncMode.Continuous)] and then compile, then change it to [UdonBehaviourSyncMode(BehaviourSyncMode.NoVariableSync)] and compile again, you get the expected behavior, and calling SendCustomNetworkEvent() works. If you then change it to [UdonBehaviourSyncMode(BehaviourSyncMode.None)] and compile, then change it to [UdonBehaviourSyncMode(BehaviourSyncMode.NoVariableSync)] and compile again It will continue to behave exactly as if it's still set to None. SendCustomNetworkEvent() does not work. This is on an object that doesn't have any other scripts on it. I haven't tested the case with other scripts. You can look at the debug inspector to confirm that this is what is happening. From the documentation: "NoVariableSync: Enforces that there are no synced variables on the behaviour, hides the sync mode selection dropdown, and allows you to use the behaviours on GameObjects that use either Manual or Continuous sync." It seems like the case where a script using NoVariableSync being used on an object that doesn't have another script on it may have been overlooked. Since I'm updating a script in a prefab I'm releasing from None to NoVariableSync because I want to use network events now, it's not going to work for anyone updating to the new version. I am forced to set it to Continuous. Does anyone know if it makes any difference to bandwidth usage?

Occasionally, when attempting to reference synced variables in other scripts when not the owner of that data, it will return the default value rather than the current value. The current workaround for this is to save all synced data as separate local variables and reference those externally, and only use the synced variables in OnPreserialization, OnDeserialization, and OnPostSerialization. This was an issue I first noticed way back in June 2021, but I was never able to consistently have it break until now. In this example world, the Dealer script is attempting to reference the GameActive boolean synced variable from the Controller script in OnDeserialization, returning if false to ensure data is not ran when the table is not active. However, for everyone except the owner of the controller script, the GameActive variable always returns the default false value, rather than the current value. To test, join the table with one user, and with the person in control, set the game type to manual mode and start a match. Provided debug logs in the code will show the GameActive state on every client. https://vrchat.com/home/world/wrld_4f737bcb-05fa-4898-8234-f3d60dad6ef2

Specifically, I would like a clear point when I can know, for sure, that: We know whether we are the instance master or not RequestOwnership is expected to work normally We can call GetOwner on any synced object (or at least the object receiving the event), and get someone who, if not the current owner, is at least a prior owner of that object. We have observed player joins for what was, at one point after we started the join process, a complete list of players in the instance. Currently this is a bit difficult; we can guess that, maybe after OnPlayerJoined or OnDeserialization things might be settled enough, but that might be later than necessary. If we're the first player we can only rely on OnPlayerJoined, but the first OnPlayerJoined is too early to have observed player joins for everyone who might be the owner of an object. In particular, having a clear signal of whether we are the first master (and can freely set the initial state of objects) or whether we are expecting to deserialize object state would be very helpful.

When making a method, and using an enum as a parameter, if a default value is set for that enum, UdonSharp spits out an error (full attached in errorlog.txt): [UdonSharp] Assets/TestCode.cs(7,0): System.ArgumentException: Type provided must be an Enum. Parameter name: enumType Making either the method or the enum does not solve this, using an integer in place of the default value does not solve this, and the error is only on the U# compiler side. The C# script is attached, and I'll repeat it here for completion: using UdonSharp; using UnityEngine; using VRC.SDKBase; using VRC.Udon; enum TestEnum {One, Two, Three} public class TestCode : UdonSharpBehaviour { void UdonEnumTest(TestEnum te = TestEnum.One){ Debug.Log(te); } } I love enums way too much to not use them like this:( tupper plz

Log the bool "value" argument for InputUse. Click your mouse and release. Expected: receive "True" once, receive "False" once Actual:

My vehicles relied on OnOwnershipTransferred() running before OnPlayerLeft() to turn the engines off when a player left the game while piloting. The way it worked was: If the master takes ownership while Occupied=true (set false in OnPlayerLeft()) they would know to turn the engine off This used to be reliable, but now it seems to be random (Only working sometimes), I can find a workaround, but I think this should be consistant, one way or the other. Suggested fix: Ownership of all a player's objects should be transferred either before or after the OnPlayerLeft() event is run. I prefer before, because it lets me know what they were doing when they left. Additionally, me using OnPlayerLeft() in the first place was a workaround for OnStationExited() not firing when a player leaves while in a station. canny here: https://feedback.vrchat.com/bug-reports/p/772-vrcstations-onremoteplayerexitstation-does-not-fire-if-the-seated-player-lea WORLD FOR TESTING: wrld_c98d4f48-afb4-4f80-ac86-3f746bc0dcae

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

It appears that there is a threshold that must be met when scrolling the content of a world space ScrollView which is not adjusted based on the size of the scroll view. This makes it impossible to scroll sufficiently small ScrollViews (if there are no scrollbars). In Client Sim, there is no such threshold. In-Game example: https://i.imgur.com/yQ6Fj0c.mp4 Editor example: https://i.imgur.com/Ry1QZk6.mp4

When trying to call GetTemporary, my script is crashing My U# var customTexture = VRCRenderTexture.GetTemporary(3840, 2160, 0, RenderTextureFormat.ARGB32, RenderTextureReadWrite.sRGB); The error: An exception occurred during EXTERN to 'VRCSDKBaseVRCRenderTexture.__GetTemporary__SystemInt32_SystemInt32_SystemInt32_UnityEngineRenderTextureFormat_UnityEngineRenderTextureReadWrite_SystemInt32_UnityEngineRenderTextureMemoryless_UnityEngineVRTextureUsage_SystemBoolean__UnityEngineRenderTexture'. Parameter Addresses: 0x000000C9, 0x000000CA, 0x0000006F, 0x000000CB, 0x000000CC, 0x0000006F, 0x000000CD, 0x000000CE, 0x00000059, 0x00000033 RenderTextureDesc msaaSamples must be 1, 2, 4, or 8. Parameter name: desc.msaaSamples Had some discussion and the solution turned out to be the default value for antialiasing parameter is 0 where the only allowed values are 1 2 4 and 8, so the default should probably be 1 instead of 0.