# Unreal Engine Communicate with SteamVR

## 0. Environment

Windows 10

Unreal Engine 5.1.1

SteamVR 1.25.8

## 1. Create a new Unreal project

Select "Film / Video & Live Events" -> "Blank". Leave "Starter Content" and "Raytracing" unchecked.

Click "Create" button.

<figure><img src="/files/AGYu5PtxkhGxsNwIwi5z" alt=""><figcaption></figcaption></figure>

## 2. Add plugin

Click "Edit" -> "Plugins" to open the plugins window.

<figure><img src="/files/d8HdDniE4FZeAlmoYn5Z" alt=""><figcaption></figcaption></figure>

Search and add the following plugins.

<figure><img src="/files/pWMbD3syzzfkKgMPowSV" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/YBrSIeQ20KzVvhC7QfSd" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/VsdDt3dbXF5pzpkUhEyQ" alt=""><figcaption></figcaption></figure>

After adding the plugin, Unreal Engine needs to be restarted.

Before restart, make sure SteamVR is running

<figure><img src="/files/GY1ewR8tP4I3nBGiNIEO" alt=""><figcaption></figcaption></figure>

## 3. Set up VR devices

<figure><img src="/files/1FZRpyde7oA1WJICckWl" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/wpdpCMcyZb5siUCMsUhy" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/PpvhDsMn85vZJquS5nOx" alt=""><figcaption></figcaption></figure>

## 4.1 Bind to virtual camera

Create a virtual camera.

<figure><img src="/files/qMuClZq9xTI4iixFlSVW" alt=""><figcaption></figcaption></figure>

Add a "Live Link Controller" component to VCam.

<figure><img src="/files/fdPgcQlleBked3jhSfYn" alt=""><figcaption></figcaption></figure>

In the "Subject Representation" field, select the desired VR device to bind.

<figure><img src="/files/ufzD33kwMC27jMaasRPl" alt=""><figcaption></figcaption></figure>

Now the virtual camera should be controlled by the VR device.

## 4.2 Read from Blueprint

The following Blueprint code shows how to read the location of the tracker.

<figure><img src="/files/4Z5hpjOkVo1pxeEx9LU6" alt=""><figcaption></figcaption></figure>

## Reference

{% embed url="<https://www.youtube.com/watch?v=HwAra3yXVHs>" %}

{% embed url="<https://www.youtube.com/watch?v=pqbuk0nQ5Sk>" %}

Other possible methods:

{% embed url="<https://dev.epicgames.com/community/learning/tutorials/LdR2/unreal-engine-how-to-use-vive-trackers-in-ue-5-2-and-later-versions>" %}

{% embed url="<https://github.com/ValveSoftware/openxr_engine_plugins>" %}

{% embed url="<https://docs.unrealengine.com/4.26/en-US/BlueprintAPI/SteamVR/GetTrackedDevicePositionandOrien-/>" %}


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