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Linux set up

This guide will show you how to install unreal engine, compile required extension and get you up and running with the project

Getting unreal engine

We have to compile unreal engine from source-code in order to use necessary plugins

  1. Visit unreal engine site and request their source code from this link they have a guide there how to do that
  2. Once you have the source code you can fork the repo and clone it directly to the desired directory on your compute, i suggest that you do it under ~/Software/
git clone <repo url>.git
  1. When this is done go to the directory of the cloned game engine
cd ~/Software/UnrealEngine
  1. Execute the following command to setup unreal engine for compilation
./Setup.sh

This should take couple of minutes

  1. Now execute another bash script to generate the project files 
./GenerateProjectFiles.sh
  1. Now run the make file to compile the engine 
make

This takes around 2 hours so, you only have to wait

  1. After this is done you can execute Unreal Editor and select any template to see if everything works
 cd ~/Software/UnrealEngine/Engine/Binaries/Linux
 ./UnrealEditor

Getting Jet Brains Rider

  1. Download Jet Brains rider from this link now go the the directory where .tar.gz file downloaded and execute following command 
sudo tar -xzf Rider.tar.gz -C /opt

NOTE: the Rider.tar.gz can have various letters and strings after each, just change the file name to match the one you downloaded

  1. Navigate to opt directory and execute the following commands
cd ./opt/JetBrains Rider-2024.2.3 #can be different version

./Rider.sh

This will open your The jet brains rider, feel free to create desktop shortcut if you want from Tools -> Create Desktop Entry

Compiling plugins

  1. Download the epic assets manager from the Flat hub
flatpak run io.github.achetagemes.epic_asset_manager
  1. Open the epic assets manager and enter your epic login info.
  2. Open the market place in bottom left corner of the application
  3. Search for the VaRest plugin and Download it, it should be included in ~/Document/Epic Vault/VaRestPlugin_5.4
  4. Go to the VaRestPlugin_5.4/data/Engine/Plugins/Marketplace/VaRestPlugin
  5. Open file VaRest.uplugin in any text editor and add "Linux" to the PlatformAllowList, if in the future plugins there is no modules add it there, this one should have it though
"Modules": [
        {
            "Name": "VaRest",
            "Type": "Runtime",
            "LoadingPhase": "PreDefault",
            "PlatformAllowList":[
                "Linux"
            ]
        },
        {
            "Name": "VaRestEditor",
            "Type": "UncookedOnly",
            "LoadingPhase": "Default",
            "PlatformAllowList":[
                "Linux"
            ]
        }
  1. Make a copy of your Unreal Engine folder as it can broke to the point you would have to rebuild entire engine if we use it for the compilation of the plugin.
cd ~/Software
cp UnrealEngin ./UnrealEngine-cpy -rrm
  1. Navigate to the batch files of the copied engine and compile the plugin
cd ~/Software/UnrealEngine-cpy/Engine/Build/BatchFiles

./RunUAT.sh BuildPlugin -Plugin="/home/name/Documents/EpicVault/VaRestPlugin_5.4/data/Engine/Plugins/Marke
tplace/VaRestPlugin/VaRest.uplugin" -Package="/home/name/Documents/EpicVault/VaRestPlugin_5-build" -TargetPlatforms=Linux

# package is the directory where you want the compiled plugin to be in

This will again take around 1 hour to compile

Once it is done move the plugin from its compiled directory to the ~/Software/UnrealEngine/Engine/Plugins/Markteplace if there is no market place directory create it

In case of any issues of compiling the plugin refer to this video.

If you can not start your unreal engine after you have done this or getting error that the some library is missing, you unfortunately must remove the engine and recompile it from scratch.

Running the project

Now we can finally get to the project we are supposed to be running. Clone the project from the organisation's repository.

Now open the rider use it to open the file called ThreeDAnatomy.uproject if you get errors that there is no engine associated with this project or that the project could not be loaded navigate to the ~/.config/EpicGames/UnrealEngine and use open Install.ini, there you should see something like this 

[Installations]
{61290131-F9C9-4A40-9CB3-202F4B612D47}=/home/name/Software/UnrealEngine

Add another line with following content

UE_5.4=/home/wpsimon09/Software/UnrealEngine

Now open the ThreeDAnatomy.uproject and change the "EngineAssociation" key to have the value of 5.4 

{
        "FileVersion": 3,
        "EngineAssociation": "5.4",
        "Category": "",
        "Description": "",
//other stuff
}

Now close the rider and reopen the ThreeDAnatomy.uproject with it, it might still display that it was not loaded but eventually after quite some time it should load it, the loading is signalised by the progress bars on the bottom left of Rider interface

Note that it loaded both the project and engine.

![[Rider-interface-loaded-project-and-engine.png]]

Now you have to build the project by right clicking on the ThreeDAnatomy and selecting BuildSelectedProjects

IMPORTANT: Never select the option to build the solution as it will rebuild entire Unreal Engine together with it

Once everything is build you can press play in top right corner (or debug) it will open the unreal editor where you can start working