No matter which Virtual Reality platform you are developing for, adding support for Motion Controllers can add a level of immersion and interaction that is just not possible to achieve with a controller or mouse and keyboard. In the following How - To we will take a look at how to add Motion Controller support to the VR Platforms that support it.
Supported Platforms
The Motion Controller component that is found in the Components tab will work on the following VR platforms.
- Oculus VR
- Steam VR
- Gear VR
- Playstation VR
- Google VR
If you do not see the platform you are developing for listed above, make sure to check that platform's documentation for how to go about setting use of Motion Controllers.
Motion Controller keys have been deprecated in 4.24 in favor of keys specific to a set of common XR controllers which are defined in the OpenXR specification. This change makes it easier to customize the input bindings for each controller model and gets rid of the ambiguity around the mapping of Motion Controller keys to physical controller buttons. See the Motion Controller Key Deprecation for more information.
Motion Controller Setup
In the following section we will take a look at how to add and setup the components that are needed for Motion Controllers to work.
This How - To has been written assuming that you have setup your Pawn to work with the VR Head Mounted Display (HMD) that you are developing for. If you are not sure how to do this, check please check out the getting started guide for the VR Head Mounted Display (HMD) you are developing for.
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First, inside the Content Browser locate and open up your Player Pawn Blueprint.
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In the Components section click on the Add Component button to expose the components that can be added to this Blueprint.
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Input Motion in the search box and then click on the Motion Controller component to add it to the components list, giving it a name of MC_Left..
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Select the newly added Motion Controller component and over in the Details panel under the Motion Controller section make sure the Hand is set to Left.
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Next, select the Motion Controller Component in the Components panel and click the Add Component button and then search for and add a Static Mesh Component, calling it SM_Left.
Make sure that the Static Mesh Component is a child of the Motion Controller Component otherwise the Static Mesh will not follow along when the Motion Controller is moved.
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Now, in the Details panel of the Static Mesh Component under the Static Mesh section input a Static Mesh to represent what the Motion Controllers will look like. For this example we are using a simple box, but feel free to use any Static Mesh you have available.
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Now, duplicate the entire Left hand Motion Controller setup and re-place the word Left with Right. Also make sure to change the which hand this Motion Controller is used for by going to the Motion Controller component and then changing Hand from Left to Right.
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Compile and save your Pawn Blueprint, make sure it is placed in your test level and then launch your project. When you put on your HMD and pick up your Motion Controlers you should be able to now do what is shown in the following video.
Motion Controller Component Visualization
Motion Controllers have a Visualization category that enables you to quickly and more easily add a display model Static Mesh to your Motion Controllers. By default, the system attempts to load a Static Mesh model matching the device driving the Motion Controller. The visualization fields offer the following options:
| Property Name | Description |
|---|---|
| Display Device Model | Used to automatically render a model associated with the set hand. |
| Display Model Source | Determines the source of the desired model. Ny default, the active XR system(s) will be queried and (if available) will provide a model for the associated device. Note: This may fail if there's no default model; use 'Custom' to specify your own mode. |
| Custom Display Mesh | A mesh override that'll be displayed attached to this Motion Controller. |
| Display Mesh Material Overrides | Material overrides for the specified Display mesh. |
Training Streams
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