# \#source-code **URL:** https://forums.unrealengine.com/tag/source-code/484.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [Announcing LLMAI Plugin - AI Realtime Text, Voice, and function calling!](https://forums.unrealengine.com/t/announcing-llmai-plugin-ai-realtime-text-voice-and-function-calling/2655068)
**Author:** [@ReflectiveSim](https://forums.unrealengine.com/u/ReflectiveSim)\ **Replies:** 3\ **Last updated:** [June 9, 2026, 3:28am UTC](https://forums.unrealengine.com/t/announcing-llmai-plugin-ai-realtime-text-voice-and-function-calling/2655068 "2026-06-09T03:28:09Z")
We just dropped something pretty exciting, at least to me, hopefully others will find it useful and or interesting. Video Demo here MetaHuman Video Demo here LLMAI, a plugin that lets you have real-time AI conversa… --- ## [Build UE 5 Source NuGet Vulnerability Warning, Errors, Fails ](https://forums.unrealengine.com/t/build-ue-5-source-nuget-vulnerability-warning-errors-fails/2445858)
**Author:** [@kNighT.GLOW](https://forums.unrealengine.com/u/kNighT.GLOW)\ **Replies:** 8\ **Last updated:** [November 7, 2025, 3:40pm UTC](https://forums.unrealengine.com/t/build-ue-5-source-nuget-vulnerability-warning-errors-fails/2445858 "2025-11-07T15:40:19Z")
“This solution contains packages with vulnerabilities. Manage NuGet Packages" Installing UE5.4 from source. Setup.bat \> GenerateFiles.bat \> project.sh file \> set Development / Win64 Warning message on the top right le… --- ## [UE 5.6.0 Source Build Fails](https://forums.unrealengine.com/t/ue-5-6-0-source-build-fails/2584801)
**Author:** [@sammichael25](https://forums.unrealengine.com/u/sammichael25)\ **Replies:** 3\ **Last updated:** [September 30, 2025, 8:00am UTC](https://forums.unrealengine.com/t/ue-5-6-0-source-build-fails/2584801 "2025-09-30T08:00:36Z")
Summary I’m getting the following errors when attempting to build 5.6.0 from source code: Error C1083 Cannot open include file: '../Plugins/Developer/Concert/ConcertApp/MultiUserClient/Source/MultiUserClient/Priva… --- ## [Please support the namespace for UClass](https://forums.unrealengine.com/t/please-support-the-namespace-for-uclass/531393)
**Author:** [@Movement](https://forums.unrealengine.com/u/Movement)\ **Replies:** 4\ **Last updated:** [September 1, 2025, 11:31am UTC](https://forums.unrealengine.com/t/please-support-the-namespace-for-uclass/531393 "2025-09-01T11:31:29Z")
Currently I’m creating a plugin in Unreal Engine I would like to use a namespace to avoid name collisions in class names. I found out that UClass doesn’t support namespaces. Currently, we avoid name collisions by givi… --- ## [New nanite voxel foliage ](https://forums.unrealengine.com/t/new-nanite-voxel-foliage/2585978)
**Author:** [@Epik971](https://forums.unrealengine.com/u/Epik971)\ **Replies:** 2\ **Last updated:** [July 25, 2025, 9:53pm UTC](https://forums.unrealengine.com/t/new-nanite-voxel-foliage/2585978 "2025-07-25T21:53:33Z")
Hello, at the presentation of UE 5.6, we were shown an updated technology for nanite foliage using the voxel method. They also said that this technology will only be available in UE 5.7. But for those who want to exper… --- ## [GenerateProjectFiles fails and .NET Framework 4.6.2 cannot be installed](https://forums.unrealengine.com/t/generateprojectfiles-fails-and-net-framework-4-6-2-cannot-be-installed/454468)
**Author:** [@mightyenigma](https://forums.unrealengine.com/u/mightyenigma)\ **Replies:** 6\ **Last updated:** [April 3, 2025, 5:10pm UTC](https://forums.unrealengine.com/t/generateprojectfiles-fails-and-net-framework-4-6-2-cannot-be-installed/454468 "2025-04-03T17:10:42Z")
I cloned Unreal Engine source code from github, installed Visual Studio Community 2017 following the setup guide, And ran setup.bat. then I ran GemerateProjectFiles.bat and it always gives an error that it needs .NET … --- ## [Design + In-Game Editor System with Gizmo & Cesium Integration](https://forums.unrealengine.com/t/design-in-game-editor-system-with-gizmo-cesium-integration/2505003)
**Author:** [@TheRageGames](https://forums.unrealengine.com/u/TheRageGames)\ **Replies:** 0\ **Last updated:** [May 12, 2025, 3:20am UTC](https://forums.unrealengine.com/t/design-in-game-editor-system-with-gizmo-cesium-integration/2505003 "2025-05-12T03:20:16Z")
Hi everyone! I made a bridge design tool inside Unreal Engine. It lets you design bridges in-game, move objects with a gizmo, and edit things like faces and vertices. It also works with Cesium to stream real-world maps. … --- ## [Failure of building ue4 from source code: error MSB3644: The reference assemblies for .NETFramework,Version=v4.6.2 were not found](https://forums.unrealengine.com/t/failure-of-building-ue4-from-source-code-error-msb3644-the-reference-assemblies-for-netframework-version-v4-6-2-were-not-found/492533)
**Author:** [@anonymous\_user\_3b730ddd](https://forums.unrealengine.com/u/anonymous_user_3b730ddd)\ **Replies:** 5\ **Last updated:** [April 11, 2025, 4:03am UTC](https://forums.unrealengine.com/t/failure-of-building-ue4-from-source-code-error-msb3644-the-reference-assemblies-for-netframework-version-v4-6-2-were-not-found/492533 "2025-04-11T04:03:01Z")
I followed the official guide and tried to build unreal engine from source code from github. However, when I tried to run the GenerateProjectFiles.bat, it throws the error: C:\\Program Files (x86)\\Microsoft Visual Studio… --- ## [Forked, cloned, and built source. F5 gives "Unable to start debugging"](https://forums.unrealengine.com/t/forked-cloned-and-built-source-f5-gives-unable-to-start-debugging/465907)
**Author:** [@anonymous\_user\_cfdc89c91](https://forums.unrealengine.com/u/anonymous_user_cfdc89c91)\ **Replies:** 17\ **Last updated:** [February 20, 2025, 7:32pm UTC](https://forums.unrealengine.com/t/forked-cloned-and-built-source-f5-gives-unable-to-start-debugging/465907 "2025-02-20T19:32:04Z")
I’m following the directions in README.md on the UnrealEngine github page. I’ve successfully forked, cloned, and cleanly compiled UE4, set the dropdown to “Development Editor”, Win64, and set the startup project to UE4, … --- ## [Differences between build configurations](https://forums.unrealengine.com/t/differences-between-build-configurations/311473)
**Author:** [@anonymous\_user\_dc900188](https://forums.unrealengine.com/u/anonymous_user_dc900188)\ **Replies:** 9\ **Last updated:** [September 7, 2024, 1:36pm UTC](https://forums.unrealengine.com/t/differences-between-build-configurations/311473 "2024-09-07T13:36:39Z")
I’m trying to determine which build configurations are needed to be built in order to supply my artists with a workspace that doesn’t require source code. I’m looking for the definitive answers to a bunch of questions (… --- ## [Guide on how to use Vim or Emacs with UE5 on Linux](https://forums.unrealengine.com/t/guide-on-how-to-use-vim-or-emacs-with-ue5-on-linux/694398)
**Author:** [@julkip](https://forums.unrealengine.com/u/julkip)\ **Replies:** 1\ **Last updated:** [July 18, 2024, 8:38pm UTC](https://forums.unrealengine.com/t/guide-on-how-to-use-vim-or-emacs-with-ue5-on-linux/694398 "2024-07-18T20:38:48Z")
I recently did a litte write-up on how to get UE5 to work with Vim or Emacs (or any other not officially supported editor/IDE), including code completion and syntax checking via LSP. I hope this is useful to someone here… --- ## [Selling engine plugin outside the marketplace](https://forums.unrealengine.com/t/selling-engine-plugin-outside-the-marketplace/327613)
**Author:** [@anonymous\_user\_55a432d8](https://forums.unrealengine.com/u/anonymous_user_55a432d8)\ **Replies:** 5\ **Last updated:** [May 24, 2024, 3:36am UTC](https://forums.unrealengine.com/t/selling-engine-plugin-outside-the-marketplace/327613 "2024-05-24T03:36:25Z")
Hello there! I have been working on a plugin which is added on the engine level. So technically it is “custom” engine branch. As far as I know current marketplace doesn’t support that. Yet I heard that we can use thir… --- ## [How to implement higher jumping every second](https://forums.unrealengine.com/t/how-to-implement-higher-jumping-every-second/1827077)
**Author:** [@parge\_biKes3](https://forums.unrealengine.com/u/parge_biKes3)\ **Replies:** 3\ **Last updated:** [May 16, 2024, 8:46pm UTC](https://forums.unrealengine.com/t/how-to-implement-higher-jumping-every-second/1827077 "2024-05-16T20:46:18Z")
Hi, does anyone know how to implement an function where the Player can jump higher after every second? Kind regards --- ## [How to keep Widgets on screen when using ServerTravel](https://forums.unrealengine.com/t/how-to-keep-widgets-on-screen-when-using-servertravel/1816544)
**Author:** [@Valentinvis](https://forums.unrealengine.com/u/Valentinvis)\ **Replies:** 3\ **Last updated:** [April 24, 2024, 10:53am UTC](https://forums.unrealengine.com/t/how-to-keep-widgets-on-screen-when-using-servertravel/1816544 "2024-04-24T10:53:28Z")
Has anyone figured out where in source code widgets are removed when changing levels by calling ServerTravel, to remove that line/those lines in Unreal Engine 5.3.X / 5.4.X? I tried looking around the code for ServerTra… --- ## [Is there an overlap check against one specific given actor/component instead of checking the whole world using 'OverlapBlockingTestByChannel' ?](https://forums.unrealengine.com/t/is-there-an-overlap-check-against-one-specific-given-actor-component-instead-of-checking-the-whole-world-using-overlapblockingtestbychannel/1795512)
**Author:** [@Melvin\_Brink](https://forums.unrealengine.com/u/Melvin_Brink)\ **Replies:** 0\ **Last updated:** [April 9, 2024, 12:47pm UTC](https://forums.unrealengine.com/t/is-there-an-overlap-check-against-one-specific-given-actor-component-instead-of-checking-the-whole-world-using-overlapblockingtestbychannel/1795512 "2024-04-09T12:47:18Z")
Instead of methods like ‘BoxOverlapActors’ or ‘OverlapBlockingTestByChannel’ which both check the world. is there an alternative for specifically checking if one given actor is overlapping with a given shape/collision-bo… --- ## [Engine always recompile 2700+ files](https://forums.unrealengine.com/t/engine-always-recompile-2700-files/1520903)
**Author:** [@GAIDJIIN1](https://forums.unrealengine.com/u/GAIDJIIN1)\ **Replies:** 0\ **Last updated:** [December 12, 2023, 9:43pm UTC](https://forums.unrealengine.com/t/engine-always-recompile-2700-files/1520903 "2023-12-12T21:43:17Z")
I created a project based on the engine source code. I compiled these 2700 files and everything was good. But when I create a new empty project based on the same source code it starts compiling 2700+ files again. And at … --- ## [Source Code from Blueprint?](https://forums.unrealengine.com/t/source-code-from-blueprint/1350905)
**Author:** [@EastProdigy](https://forums.unrealengine.com/u/EastProdigy)\ **Replies:** 2\ **Last updated:** [November 2, 2023, 12:05pm UTC](https://forums.unrealengine.com/t/source-code-from-blueprint/1350905 "2023-11-02T12:05:46Z")
Hello Unreal Ones, I am considering to offer my game development service through Fiverr, and based from most developers, they offer source code for their clients. If am using Blueprint 100%, how do I actually give away … --- ## [Adding C++ to Projects I Didn't Make](https://forums.unrealengine.com/t/adding-c-to-projects-i-didnt-make/463078)
**Author:** [@anonymous\_user\_7e14549f](https://forums.unrealengine.com/u/anonymous_user_7e14549f)\ **Replies:** 3\ **Last updated:** [September 11, 2023, 1:02pm UTC](https://forums.unrealengine.com/t/adding-c-to-projects-i-didnt-make/463078 "2023-09-11T13:02:47Z")
So I want to edit Hello Neighbor Alpha 2 and I extracted the files from the Pak in a game copy. (Unreal Engine version 4.9 and my version I’m trying to use to open it is 4.9.2) When I try to open the project, this messag… --- ## [Source code project doesn't build after adding new plugin](https://forums.unrealengine.com/t/source-code-project-doesnt-build-after-adding-new-plugin/472822)
**Author:** [@BercouIi](https://forums.unrealengine.com/u/BercouIi)\ **Replies:** 1\ **Last updated:** [August 16, 2023, 8:39am UTC](https://forums.unrealengine.com/t/source-code-project-doesnt-build-after-adding-new-plugin/472822 "2023-08-16T08:39:24Z")
i wanted to install a new plugin to a sorce code engine, so first i installed it to a 4.25 engine then copied the plugin to the source engine, i opened the project and enabled the plugin then i had to restart for the plu… --- ## [\[UE5, Feature Req\] Nested containers. 2023. 🤮](https://forums.unrealengine.com/t/ue5-feature-req-nested-containers-2023/1254094)
**Author:** [@Roy\_Wierer.Seda145](https://forums.unrealengine.com/u/Roy_Wierer.Seda145)\ **Replies:** 0\ **Last updated:** [August 8, 2023, 2:10am UTC](https://forums.unrealengine.com/t/ue5-feature-req-nested-containers-2023/1254094 "2023-08-08T02:10:09Z")
While separating my c++ utilities from blueprint function libraries, because I’m sick of the bloat and statics: this. come oooooon This sh\*t is wasting my time. :nauseated\_face: I’m not creating a struct to nest… --- ## [Marketplace plugin without Source files.](https://forums.unrealengine.com/t/marketplace-plugin-without-source-files/1224882)
**Author:** [@voidrosegd](https://forums.unrealengine.com/u/voidrosegd)\ **Replies:** 6\ **Last updated:** [July 10, 2023, 6:00pm UTC](https://forums.unrealengine.com/t/marketplace-plugin-without-source-files/1224882 "2023-07-10T18:00:51Z")
Hello everyone, my team and I made a plugin and we want to distribute it for free, but we also don’t want to distribute the source code with it. The plugin works fine without the source code and the project is built wit… --- ## [Lan Multiplayer Android game on LocalWifi (HotSpot)](https://forums.unrealengine.com/t/lan-multiplayer-android-game-on-localwifi-hotspot/423896)
**Author:** [@anonymous\_user\_272abbce](https://forums.unrealengine.com/u/anonymous_user_272abbce)\ **Replies:** 11\ **Last updated:** [July 6, 2023, 5:45am UTC](https://forums.unrealengine.com/t/lan-multiplayer-android-game-on-localwifi-hotspot/423896 "2023-07-06T05:45:36Z")
Hey, I’m using UE4.19, I want to make a Multiplayer game for android, where two Devices will be connected through wifi (HotSpot on one mobile, WiFi on other) is it possible to do using BluePrint only without using Source… --- ## [How to reduce UE5 folder size after building from source?](https://forums.unrealengine.com/t/how-to-reduce-ue5-folder-size-after-building-from-source/865657)
**Author:** [@SeriousIHitman](https://forums.unrealengine.com/u/SeriousIHitman)\ **Replies:** 0\ **Last updated:** [April 6, 2023, 9:30pm UTC](https://forums.unrealengine.com/t/how-to-reduce-ue5-folder-size-after-building-from-source/865657 "2023-04-06T21:30:26Z")
Hello, two weeks ago I made a feature request related to the built-in media player (Improvements for built-in Media Player). No one answered, but I really needed this functionality, so I decided to modify the Unreal Engi… --- ## [Losing const qualifier through soft pointer? Hacky?](https://forums.unrealengine.com/t/losing-const-qualifier-through-soft-pointer-hacky/779114)
**Author:** [@Roy\_Wierer.Seda145](https://forums.unrealengine.com/u/Roy_Wierer.Seda145)\ **Replies:** 4\ **Last updated:** [February 27, 2023, 11:55pm UTC](https://forums.unrealengine.com/t/losing-const-qualifier-through-soft-pointer-hacky/779114 "2023-02-27T23:55:58Z")
In a specific situation where I need to access a loaded asset, I could only retrieve a const pointer. Casting away const on a variable and then modifying that variable results in undefined behavior: const\_cast conversion… --- ## [Problem with generating project files for source version of engine 4.27. Uses VS2022 instead of 2019](https://forums.unrealengine.com/t/problem-with-generating-project-files-for-source-version-of-engine-4-27-uses-vs2022-instead-of-2019/757275)
**Author:** [@S\_Q\_R](https://forums.unrealengine.com/u/S_Q_R)\ **Replies:** 1\ **Last updated:** [January 26, 2023, 12:21pm UTC](https://forums.unrealengine.com/t/problem-with-generating-project-files-for-source-version-of-engine-4-27-uses-vs2022-instead-of-2019/757275 "2023-01-26T12:21:03Z")
Hi. I’m trying to build source version of UE4.27. I got Visual Studio 2019 and 2022 installed. When I’m using GenerateProjectFiles.bat its generating 2022 (VS17) solution and I want to use VS16 - 2019 as it is recommen… --- ## [Can't build my project after converting it to c++](https://forums.unrealengine.com/t/cant-build-my-project-after-converting-it-to-c/418075)
**Author:** [@IdiotGecko](https://forums.unrealengine.com/u/IdiotGecko)\ **Replies:** 2\ **Last updated:** [September 26, 2022, 2:02pm UTC](https://forums.unrealengine.com/t/cant-build-my-project-after-converting-it-to-c/418075 "2022-09-26T14:02:12Z")
Hi, I am using UE4.18.3, and I wanted to use the VR expansion plugin. I followed the instructions to the best of my ability, but when I go to build the project, I get what appears to be a bunch of syntax errors? I am usi… --- ## [Downloading Source Code - Question](https://forums.unrealengine.com/t/downloading-source-code-question/650815)
**Author:** [@anonymous\_user\_558052081](https://forums.unrealengine.com/u/anonymous_user_558052081)\ **Replies:** 1\ **Last updated:** [September 17, 2022, 10:55pm UTC](https://forums.unrealengine.com/t/downloading-source-code-question/650815 "2022-09-17T22:55:56Z")
I am following along here: Onboarding Guide for Unreal Engine Games Licensees | Unreal Engine 5.0 Documentation But after doing step 4 just fine ( 1. Run GenerateProjectFiles.bat to create project files for the engine. … --- ## [Update source](https://forums.unrealengine.com/t/update-source/630174)
**Author:** [@Atom\_Thunder](https://forums.unrealengine.com/u/Atom_Thunder)\ **Replies:** 1\ **Last updated:** [August 17, 2022, 12:45pm UTC](https://forums.unrealengine.com/t/update-source/630174 "2022-08-17T12:45:09Z")
Hi, how can I update a source code version? --- ## [Non-intuitive and conflicting names in GAS Ability Tasks](https://forums.unrealengine.com/t/non-intuitive-and-conflicting-names-in-gas-ability-tasks/602789)
**Author:** [@lucoiso](https://forums.unrealengine.com/u/lucoiso)\ **Replies:** 0\ **Last updated:** [July 12, 2022, 2:45am UTC](https://forums.unrealengine.com/t/non-intuitive-and-conflicting-names-in-gas-ability-tasks/602789 "2022-07-12T02:45:31Z")
Pull Request: #9381 There’s 3 Ability Tasks: AbilityTask\_WaitConfirm: This task will wait for the ability to be confirmed by the server. AbilityTask\_WaitCancel: This task waits for the Cancel Input. AbilityTask\_WaitCon… --- ## [Source can't see file](https://forums.unrealengine.com/t/source-cant-see-file/475829)
**Author:** [@DDemon](https://forums.unrealengine.com/u/DDemon)\ **Replies:** 7\ **Last updated:** [July 6, 2022, 11:02am UTC](https://forums.unrealengine.com/t/source-cant-see-file/475829 "2022-07-06T11:02:11Z")
I downloaded the source from git and went through all the steps to set it up but as I finished the build of my project it started to say that it couldn’t find some function. I tried to locate it and by the looks of it so… [Next page](https://forums.unrealengine.com/tag/source-code/484.md?match_all_tags=true&page=1&tags%5B%5D=source-code)