Install Support Package for Customizing Scenes

Step 1 of 4 in Customize Unreal Engine Scenes for Automated Driving

To customize scenes in your installation of the Unreal^® Editor and simulate within these scenes in Simulink^®, you must first install the Automated Driving Toolbox Interface for Unreal Engine 4 Projects.

Note

These installation instructions apply to R2021b. If you are using a previous release, see the documentation for Other Releases.

Verify Software and Hardware Requirements

Before installing the support package, make sure that your environment meets the minimum software and hardware requirements described in Unreal Engine Simulation Environment Requirements and Limitations.

Install Support Package

To install the Automated Driving Toolbox™ Interface for Unreal Engine^® 4 Projects support package, follow these steps:

On the MATLAB^® Home tab, in the Environment section, select Add-Ons > Get Add-Ons.
In the Add-On Explorer window, search for the Automated Driving Toolbox Interface for Unreal Engine 4 Projects support package. Click Install.

Note
You must have write permission for the installation folder.

Set Up Scene Customization Using Support Package

The Automated Driving Toolbox Interface for Unreal Engine 4 Projects support package includes these components:

AutoVrtlEnv folder — An Unreal Engine project folder containing the AutoVrtlEnv.uproject file and corresponding supporting files. This project contains editable versions of the prebuilt scenes that you can select from the Scene name parameter of the Simulation 3D Scene Configuration block.
MathWorkSimulation — A plugin that establishes the connection between Simulink and the Unreal Editor. It is required for co-simulation.
RoadRunnerScenes folder — A folder containing the Unreal Engine project and corresponding executable for a scene that was created by using the RoadRunner scene editing software. This folder contains these subfolders:
- RRScene — An Unreal Engine project folder containing the RRScene.uproject file and corresponding supporting files. This project contains an editable version of the scene used in the Highway Lane Following with RoadRunner Scene example.
- WindowsPackage — A folder containing the executable RRScene.exe and supporting files. Use this executable to co-simulate the Simulink models explained in the Highway Lane Following with RoadRunner Scene example.

To set up scene customization, you must copy the AutoVrtlEnv project and MathWorksSimulation plugin folder onto your local machine. To customize the RoadRunner scene used in the Highway Lane Following with RoadRunner Scene example, you must also copy the RRScene project onto your local machine and download the RoadRunnerMaterials plugin and copy it into your local project.

Copy `AutoVrtlEnv` Project to Local Folder

Copy the AutoVrtlEnv project folder into a folder on your local machine.

Specify the path to the support package folder that contains the project. If you previously downloaded the support package, specify only the latest download path, as shown here. Also specify a local folder destination in which to copy the project. This code specifies the local folder of C:\Local.
```
supportPackageFolder = fullfile( ...
    matlabshared.supportpkg.getSupportPackageRoot, ...
    "toolbox","shared","sim3dprojects","spkg");
localFolder = "C:\Local";
```
Copy the AutoVrtlEnv project from the support package folder to the local destination folder.
```
projectFolderName = "AutoVrtlEnv";
projectSupportPackageFolder = fullfile(supportPackageFolder,"project",projectFolderName);
projectLocalFolder = fullfile(localFolder,projectFolderName);
if ~exist(projectLocalFolder,"dir")
    copyfile(projectSupportPackageFolder,projectLocalFolder);
end
```
The AutoVrtlEnv.uproject file and all of its supporting files are now located in a folder named AutoVrtlEnv within the specified local folder. For example: C:\Local\AutoVrtlEnv.

Copy `MathWorksSimulation` Plugin to Unreal Editor

Copy the MathWorksSimulation plugin folder into the Plugins folder of your Unreal Engine installation.

Specify the local folder containing your Unreal Engine installation. This code shows the default installation location for the editor on a Windows^® machine.
```
ueInstallFolder = "C:\Program Files\Epic Games\UE_4.25";
```

Copy the plugin from the support package into the Plugins folder.

mwPluginName = "MathWorksSimulation.uplugin";
mwPluginFolder = fullfile(supportPackageFolder,"plugins");
uePluginFolder = fullfile(ueInstallFolder,"Engine","Plugins");
uePluginDestination = fullfile(uePluginFolder,"Marketplace","MathWorks");

cd(uePluginFolder)
foundPlugins = dir("**/" + mwPluginName);

if ~isempty(foundPlugins)
    numPlugins = size(foundPlugins,1);
    msg2 = cell(1,numPlugins);
    pluginCell = struct2cell(foundPlugins);

    msg1 = "Plugin(s) already exist here:" + newline + newline;
    for n = 1:numPlugins
        msg2{n} = "    " + pluginCell{2,n} + newline;
    end
    msg3 = newline + "Please remove plugin folder(s) and try again.";
    msg = msg1 + msg2 + msg3;
    warning(msg);
else
    copyfile(fullfile(mwPluginFolder,'mw_simulation'),uePluginDestination);
    disp("Successfully copied MathWorksSimulation plugin to UE4 engine plugins!")
end

(Optional) Copy `RRScene` Project to Local Folder

To customize the scene in the RRScene project folder, copy the project onto your local machine.

Specify the path to the support package folder that contains the project. Also specify a local folder destination to copy the project. This code uses the support package path and local folder path from previous sections.
```
rrProjectSupportPackageFolder = fullfile( ...
    matlabshared.supportpkg.getSupportPackageRoot, ...
    "toolbox","shared","sim3dprojects","driving", ...
    "RoadRunnerScenes","RRScene");
rrProjectLocalFolder = fullfile(localFolder,"RRScene");
```
Copy the RRScene project from the support package folder to the local destination folder.
```
if ~exist(rrProjectLocalFolder,"dir")
    copyfile(rrProjectSupportPackageFolder,rrProjectLocalFolder);
end
```

The RRScene.uproject file and all of its supporting files are now located in a folder named RRScene within the specified local folder. For example: C:\Local\RRScene.

(Optional) Copy `RoadRunnerMaterials` Plugin to Unreal Editor

When customizing the scene in the RRScene project folder, you must also copy the RoadRunnerMaterials plugin to your plugin project folder.

Download the ZIP file containing the latest RoadRunner plugins. See Downloading Plugins (RoadRunner). Extract the contents of the ZIP file to your local machine. The extracted folder name is of the form RoadRunner Plugins x.x.x, where x.x.x is the plugin version number.
Specify the path to the RoadRunnerMaterials plugin. This plugin is located in the Unreal/Plugins folder of the extracted folder. Update this code to match the location where you downloaded the plugin and the plugin version number.
```
rrMaterialsPluginFolder = fullfile("C:","Local","RoadRunner Plugins 1.0.3", ...
    "Unreal","Plugins","RoadRunnerMaterials");
```
In your local RRScene project, create a Plugins folder in which to copy the plugin. This code uses the path to the local RRScene project specified in the previous section.
```
rrProjectPluginFolder = fullfile(rrProjectLocalFolder,"Plugins","RoadRunnerMaterials");
```

Copy the RoadRunnerMaterials plugin to the Plugins folder of your local project.

copyStatus = copyfile(rrMaterialsPluginFolder,rrProjectPluginFolder);
if copyStatus
    disp("Successfully copied RoadRunnerMaterials plugin to RRScene project plugins folder.")
else
    disp("Unable to copy RoadRunnerMaterials plugin to RRScene project plugins folder.")
end

After you install and set up the support package, you can begin customizing scenes. If you want to use a project developed using a prior release of the Automated Driving Toolbox Interface for Unreal Engine 4 Projects support package, you must migrate the project to make it compatible with the currently supported Unreal Editor version. See Migrate Projects Developed Using Prior Support Packages. Otherwise, see Customize Scenes Using Simulink and Unreal Editor.