openvr | Java OpenVR binding - In sync with original OpenVR | Game Engine library

I'm trying to implement a basic OpenVR C++ app. This is my code:

I have Installed OpenVR through vcpkg and am trying to link it via CMAKE, the issue is that I don't know how to do it, nor can I find any info on how to.

Unlike other packages where once installed it tells you how to link via CMAKE by using find_package and target_link_libraries, OpenVR doesn't. I initially assumed that

I downloaded the release build without modifying (https://www.lwjgl.org/customize) I put all the classes in Eclipse. Some classes are not recognized

The codes that do not need these classes in error, work normally. As in https://www.lwjgl.org/guide

All the classes I put:

I cloned the openVR repo and went directly to compile the driver_sample and hellovr_dx12 and hellovr_opengl projects. The builds were successful. But both the helloVR applications failed to launch with an error:

I am trying obs-studio-node.
This module require libobs as dependency. While building this module it download a pre-built version of libobs if none is specified. We can specify out custom libobs as mentioned in README.md

I followed these steps to build libobs. These steps are listed in README.md

1. git clone https://github.com/stream-labs/obs-studio
2. cd obs-studio
3. git submodule update --init --recursive
4. mkdir build
5. cd build
6. cmake .. -DENABLE_UI=false -DDepsPath="C:\Users\alokm\Downloads\dependencies2019\win64" -DENABLE_SCRIPTING=false -G"Visual Studio 16 2019" -A x64
7. cmake --build .
8. cpack -G ZIP

Last step (cpack -G ZIP) is failing with errors

So trying to hook a OpenVR method "ITrackedDeviceServerDriver::GetPose" but i'm getting access violations when my custom hooked method returns out (I think something is wrong with calling convention but idk enough about what x64 asm expects).

All other methods I hook in "ITrackedDeviceServerDriver" work fine. Only "GetPose" fails.

Class thats being hooked looks like:

I'm attempting to play Mabinogi by Nexon on Linux Mint 20 (Ulyana) using Lutris. I've previously used Lutris to play Heroes of the Storm but otherwise don't have much experience with it (or with gaming on Linux, in general). There's no installer on the Lutris website for Mabinogi like there was for Heroes of the Storm, so I was on my own to try and figure everything out.

I started by downloading the Nexon Launcher Installer from their website. I configured Lutris to launch this executable using Wine within a simulated Windows environment. When it first launched I noticed several files were created ("drive_c", "Program Files", "Users", etc -- mimicking a Windows file system). The launcher installer ran without issue and I installed the launcher to "C:\Program Files (x86)\Nexon"

I then re-configured Lutris to try and launch the Nexon Launcher instead of the Nexon Launcher Installer. When I hit "Play" in Lutris, nothing happened. Running ps -ax | grep "Nexon" showed that it was theoretically running, but there was no window or visible UI even after several minutes of waiting. I checked the Lutris logs and noticed a message about a file missing (something like "10000.manifest.hash"). I Google'd this error and found plenty of people in Windows who had trouble running the Nexon Launcher with the same error, and the solution was to just install Mabinogi through Steam.

So next I downloaded the "Wine Steam" runner in Lutris and set this as the runner for Mabinogi, plugging in the app ID (212200). After Steam installed, launched, logged in, and downloaded Mabinogi I tried to launch the game. This time I saw a window pop up saying "Mabinogi is launching" and in the bottom-right the Nexon Game Security icon popped up, but then everything closed and the game never started.

Finally out of desperation I tried setting up a virtual computer using VirtualBox to play the game in its native Windows environment. I installed Windows 7 (the minimum required version according to the Nexon website). I downloaded Mabinogi through Steam on the virtual box. Upon trying to launch Mabinogi, I received the error error: "api-ms-win-crt-runtime-l1-1-0.dll is missing". I'm curious if this error is related to why I couldn't get Mabinogi working in Lutris.

Looking at a game that I had previously played in Lutris (Heroes of the Storm), I noticed a very similar DLL was listed in the "DLL overrides" section: "api-ms-win-crt-private-l1-1-0.dll". So I tried adding the runtime DLL to the overrides in Mabinogi with the same value ("n,b") - but this didn't work.

Looking at the Lutris logs when I try to launch Mabinogi through Wine Steam, there are several errors from \main\game-launch.js:109. I'm not sure if this JS script is part of Lutris of part of the Nexon Launcher, but it could provide some hints. Among the logs the following lines stand out as potentially meaningful:

Odd question, but I'm having trouble boiling it down to a coherent question.

I have sampled data (60Hz) from Brekel OpenVR recorder, which includes the following parameters for the HMD itself:

• X, Y, Z positional coordinates
• Euler angles rotX, rotY, rot.

I'm processing the data in python. Overall, what I'm trying to do is to calculate measures of mobility: did someone look around more or less during a segment, and did they move around more or less?

For the positional coordinates that wasn't too difficult, I was able to calculate displacement, velocity, etc., by using the distances between subsequent positions. Now for the Euler angles, I'm having more trouble.

I've searched for the answer to my question, but none of the answer seemed to 'click'. What I think I need, is to convert the Euler angles to a directional vector, and then calculate the angle between the directional vectors of subsequent samples to see how much the gaze direction shifted. Once I have those, I can calculate means and SDs per subject, to see which of them looked around more (that's the idea anyway). I am unclear on the mathematics though. It would have been easier if my coordinates were roll, pitch, yaw, but I'm struggling with the Euler angles.

Suppose the Euler angles for two subsequent samples are:

• (rotX, rotY, rot) = (20°, 25°, 50°)
• (rotX2, rotY2, rot2) = (30°, 35°, 60°)

How can I quantify with what angle the direction of the HMD changed between those two samples?

I'm making a windows application in C++. There's an API which requires a configuration file, and also the absolute path of that configuration file. ( https://github.com/ValveSoftware/openvr/wiki/Action-manifest ). I would have an easier time reasoning about this if I understood expected practices for publishing an executable.

Should I package MyApp.exe in a folder named MyApp, with MyApp.exe at the root, and all resources/config alongside it? Does that mean that, when run, all relative paths referenced from within the executable should be relative to the MyApp folder? How can I get the absolute path of the folder to which all relative paths are relative? (Whereby I could get the full absolute path of the config file by simply concatenating that absolute path with the relative path of the config file, which I should have control over...)

edit: to clarify, the API requires the filepath to be absolute. See the link: "The full path to the file must be provided; relative paths are not accepted." I'm not looking for c++ workarounds that would let me not need absolute filepaths: I need to find a way to get the absolute file path, because it is a constraint of the API.