UE4 Forums Thread https://forums.unrealengine.com/development-discussion/vr-ar-development/89050-vr-openvr-expansion-plugin
Example Template Project https://github.com/mordentral/VRExpPluginExample
Website: www.vreue4.com
This Plugin is intended to add additional functionality to Open/SteamVR/(All VR now) in UE4.
https://vreue4.com/documentation?section=installation
Guides for migrating between different engine versions of the plugin:
View the patch notes at www.vreue4.com for migration guides as well.
Option 1:
Go to www.vreue4.com and downloaded the pre-built binary version for the engine version you are using (not updated with every daily change, only weekly or with large patches).
Install it into your ProjectName/Plugins Directory (Engine level hasn't worked since 4.25 or so when it stopped letting me reference other plugins when compiling for that).
Option 2 (More up to date - preferred if possible):
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Clone Or Download Zip and extract this repository to a folder named "VRExpansionPlugin" in your "ProjectName/Plugins" directory, create this directory if it is missing.
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Add the VRExpansionPlugin to your projects PublicDependencyModuleNames in the projects build.cs if you have c++ code included.
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IF you do not have c++ code, use the Add New button in the editor and add a blank c++ class to your project.
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Open up the generated project .SLN file and build the project from the build menu.
You need to have visual studio installed and follow the UE4 setup guide for it: https://docs.unrealengine.com/latest/INT/Programming/Development/VisualStudioSetup/
The template project contains use examples of most of the features of the plugin as well as locomotion modes, interaction methods, and basic multiplayer.