World/Udon Bugs & Feature Requests

Greetings, I'd like to have write access to UnityEngine.BoneWeight data structures from Udon. https://docs.unity3d.com/ScriptReference/BoneWeight.html The reaons is that : I'm currently making a 3D Model Loader using Udon#. https://github.com/vr-voyage/vrchat-glb-loader So far, I've been able to reproduce 3D models included in GLB and VRM files (GLTF) correctly. However, I cannot recreate the armature due to Udon not being able to access the members of the BoneWeight structure. While this is not a showstopper, as I can always try to do GPU skinning using solutions like ShaderMotion ( https://gitlab.com/lox9973/ShaderMotion ), I'd like to avoid any workaround as much as possible and have direct access to that data structure.

Players and world creators would appreciate a new character controller for VRChat worlds. It should work mostly like VRChat's current character controller, but has a variety of improvements: Players can stand on moving platforms. Going upstairs and slopes is smoother. Players can get pushed around by the colliders. It's better at getting players unstuck from geometry. Udon has greater control over the character controller. ... And more!

Currently, when a user enters the interaction range an interactive game object in a world, VRChat displays a blue halo around it. Udon can control this highlight with InputManager.EnableObjectHighlight , though it's unreliable and undocumented. It turns the highlight on and off, but the game object loses or regains its highlight if the user enters the interaction range. Worlds can work around this by calling EnableObjectHighlight every Update. Udon should be able to control an object's highlight state to a greater extent.

Certain accessories can be made really large and used by players to obstruct world elements used in worlds to display important info like who is an enemy etc. It would be nice to have a way to get a bounding box that can be used in udon.

Please expose the properties of VRC Constraints to Udon that are exposed on Unity Constraints, like IsActive and the freeze axes. VRC Constraints are more optimized than Unity Constraints, and many creators would prefer to use them whenever possible for this reason. However, many useful properties of constraints are only exposed to Udon on Unity Constraints, and not VRC Constraints, making it only possible to modify them with scripts using animators, or just switching to the less performant Unity Constraints.

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.

Currently when a world loads, for example all VRCImageDownloader have to redownload their content, with a 5 second period between each. This both puts strain on hosts and also limits what we can do with worlds in a nice way since all non-bundled content has to be redownloaded every time. Not to mention it puts pressure on bandwidth for users. Ideally there should be a parameter on these functions to make a cached download request, at the very least for images/video, so it can be decided on a case-by-case basis (as this would of course not be desired for all cases where a URL is input by a user or is frequently changing on the source server.). If caching is enabled on the request and a local copy exists, you skip sending a request to the server and skip the 5-second cooldown on this downloader type, simply loading it from disk. This avoids the security concerns since no contact is made to the server. ----------------------------------------------------------- The cache could be stored as a sub-folder of a specific world, being shared across instances, which would make sense, and would make cleanup simple. But even more gains could be had from it being a global cache, so if I pasted the same URL in another world, it could instantly load it from my cache and any others who already have it cached, avoiding duplication of data. A simple dictionary file can be maintained and loaded on VRChat load to avoiding having to scan the cached files each time, as the amount of files could definitely grow pretty big. But a global cache like that isn't essential and would gladly give it up if it means implementing this request is more likely. Also, having an option to set the "TTL" (time to live) of the cached file would be a nice benefit too, though not an essential feature to have from the start. But would be pretty simple to add it as a saved property in the cache record data and compare it to the creation date and just do a redownload. (The local data should be encrypted using existing world encryption systems to prevent modifying the files and so there's no concern about illegal/awkward media ending up in a person's cache).

Suggestion: Option 1: In class VRCPlayerApi, create a bool method SetVisibility(bool) which defaults to true, for toggling the overall visibility of a particular player, which includes their avatar and nameplate and any chat box they may create. Option 2: Alternatively, create multiple toggles to control each element individually, such as SetAvatarVisibility() SetNamePlateVisibility() SetChatBoxVisibility() SetStickerVisibility() SetItemVisibility() etc. In my opinion the second option offer better granularity of control and allows a more creative use. Reason 1: Currently if we need to hide a remote player without changing their actual position, we need to exploit a desync station to achieve this effect. Surely that is not the intended use of a station and is in fact a bug. We should be allowed to modify a remote player's visibility with Udon, directly, without exploiting a bug. Meanwhile, world creators can transition to this method, thus allowing the station bug be fixed without affecting worlds that utilize it. Arguably this feature is a prerequisite of eventually fixing the station. Reason 2: We can already control the audibility of a player, via SetVoiceDistanceFar etc. Combining SetVisibility(false) with SetVoiceDistanceFar(0f) and SetAvatarAudioFarRadius(0f) you can make someone completely disappear. Or, alternatively, make someone invisible but can still be heard.

Today, the most popular use case of the IVRCImageDownload is to share some picture with friends in VRChat. However, there is one big annoying behavior in IVRCImageDownload for this use case. That's 2048x2048 texture size limit. Therefore, I hope VRChat to have the feature that automatically scale the texture size down to 2048x2048. As described before, it's common to use IVRCImageDownload for sharing pictures with friends. There are several assets specifically designed for this use case such as Image Pad and ImageTablet . However, the 2048x2048 size limit is an annoying for this use case because today picture is likely to exceed this limit. For example, my iPhone 12 mini with default settings will take picture with 4032x3024 pixels and other modern smartphones also take high resolution image by default. In VRChat, I feel it’s common to choose take pictures in QHD, 4K, or 8K but none fits 2048x2048 limit. (FHD and HD fits 2048x2048 though we want to take high-quality pictures.) The texture downloaded with IVRCImageDownload become uncompressed RG, RGB or RGBA texture on the VRAM so It take huge VRAM. Therefore, I think it's reasonable to limit texture size on the VRAM. However, I think it's possible to resize texture down to 2048 off the main thread before loading to to the VRAM. That’s why I request VRChat to have the feature that automatically scale the texture size down to 2048x2048. 日本語要約 IVRCImageDownloadという Image Pad や ImageTablet のような画像を共有するためのアセットで使われている機能に対する要望です。 前述のタブレットではVRChatの制限により2048x2048より大きい画像を指定した場合にはエラーになりますが、エラーにする代わりに 2048x2048 以下に自動的にリサイズするオプションを追加してほしいという要求になります。 (技術的理由により2048x2048より大きい画像をそのまま表示するのは厳しいです) このオプションがあれば、Discordなどに上げた画像を共有するときにエラーが出て使えないという面倒事を減らせるようになります。

In addition to the inventory post that already exist, I want to be able to give players items to consume/spawn only usable in my world. For example, if I make a Minecraft-esque world every player would find a starter kit in their inventory with a shovel, axe, torch and pickaxe. When leaving the world the items would disappear. Or a flare gun players can use to find each other on super large worlds. Assuming persistence exists, a tick box would exist on the imaginary item component to either make it disappear on switching world or you keep it forever (Or until consumed?)