Skip to content

Latest commit

 

History

History
48 lines (33 loc) · 3.22 KB

unreal_upgrade.md

File metadata and controls

48 lines (33 loc) · 3.22 KB
Raw

Upgrading to Unreal Engine 4.18

These instructions applies if you are already using AirSim on Unreal Engine 4.16. If you never installed AirSim, please see How to get it.

Caution: Below steps will delete your any unsaved work in AirSim or Unreal folder.

Do this first

For Windows Users

  1. Install Visual Studio 2017 with VC++, Python and C#.
  2. Install UE 4.18 through Epic Games Launcher.
  3. Start x64 Native Tools Command Prompt for VS 2017 and navigate to AirSim repo.
  4. Run clean_rebuild.bat to remove all unchecked/extra stuff and rebuild everything.

For Linux Users

  1. From your AirSim repo folder, run 'clean_rebuild.sh`.
  2. Rename or delete your exiting folder for Unreal Engine.
  3. Follow step 1 and 2 to install Unreal Engine 4.18.

Upgrading Your Custom Unreal Project

If you have your own Unreal project created in older version of Unreal Engine then you need to upgrade your project to Unreal 4.18. To do this,

  1. Open .uproject file and look for the line "EngineAssociation" and make sure it reads like "EngineAssociation": "4.18".
  2. Delete Plugins/AirSim folder in your Unreal project's folder.
  3. Go to your AirSim repo folder and copy Unreal\Plugins folder to your Unreal project's folder.
  4. Copy *.bat (or *.sh for Linux) from Unreal\Environments\Blocks to your project's folder.
  5. Run clean.bat (or clean.sh for Linux) followed by GenerateProjectFiles.bat (only for Windows).

FAQ

I have Unreal project that is older than 4.16. How do I upgrade it?

Option 1: Just Recreate Project

If your project doesn't have any code or assets other than environment you downloaded then you can also simply recreate the project in Unreal 4.18 Editor and then copy Plugins folder from AirSim/Unreal/Plugins.

Option 2: Modify Few Files

Unreal versions newer than Unreal 4.15 has breaking changes. So you need to modify your *.Build.cs and *.Target.cs which you can find in Source folder of your Unreal project. So what are those changes? Below is the gist of it but you should really refer to Unreal's official 4.16 transition post.

In your project's *.Target.cs

  1. Change the contructor from, public MyProjectTarget(TargetInfo Target) to public MyProjectTarget(TargetInfo Target) : base(Target)

  2. Remove SetupBinaries method if you have one and instead add following line in contructor above: ExtraModuleNames.AddRange(new string[] { "MyProject" });

In your project's *.Build.cs

Change the constructor from public MyProject(TargetInfo Target) to public MyProject(ReadOnlyTargetRules Target) : base(Target).

And finally...

Follow above steps to continue upgrade. The warning box might show only "Open Copy" button. Don't click that. Instead click on More Options which will reveal more buttons. Choose Convert-In-Place option. Causion: Always keep backup of your project first! If you don't have anything nasty, in place conversion should go through and you are now on new version of Unreal.