# Development **URL:** https://forums.unrealengine.com/c/development-discussion/11.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [Epic's GPUlightmass](https://forums.unrealengine.com/t/epics-gpulightmass/139357)
**Author:** [@maxbrown](https://forums.unrealengine.com/u/maxbrown)\ **Replies:** 1051\ **Last updated:** [November 15, 2026, 11:57am UTC](https://forums.unrealengine.com/t/epics-gpulightmass/139357 "2026-11-15T11:57:23Z")
Epic recently revealed their code for their GPUlightmass in the dev-rendering branch on GitHub. Some people are already playing with it and some (like me) are running into issues. I think it could be nice if people’s ex… --- ## [I am experiencing exactly the same issue with Epic Games Launcher 20.3.8 on Windows 11. ](https://forums.unrealengine.com/t/i-am-experiencing-exactly-the-same-issue-with-epic-games-launcher-20-3-8-on-windows-11/2855847)
**Author:** [@createrdream](https://forums.unrealengine.com/u/createrdream)\ **Replies:** 1\ **Last updated:** [November 15, 2026, 9:46am UTC](https://forums.unrealengine.com/t/i-am-experiencing-exactly-the-same-issue-with-epic-games-launcher-20-3-8-on-windows-11/2855847 "2026-11-15T09:46:27Z")
Hello, I am experiencing exactly the same issue with Epic Games Launcher 20.3.8 on Windows 11. Engine Versions section is completely empty. Install Engine button does nothing. The + button is unresponsive. L… --- ## [FScreenShotRequest sometimes takes a picture from the editor camera despite pawn being possessed](https://forums.unrealengine.com/t/fscreenshotrequest-sometimes-takes-a-picture-from-the-editor-camera-despite-pawn-being-possessed/2741694)
**Author:** [@terminatorace](https://forums.unrealengine.com/u/terminatorace)\ **Replies:** 1\ **Last updated:** [November 15, 2026, 8:31am UTC](https://forums.unrealengine.com/t/fscreenshotrequest-sometimes-takes-a-picture-from-the-editor-camera-despite-pawn-being-possessed/2741694 "2026-11-15T08:31:48Z")
In my code I run the screenshotrequest function every tick on the pawn I am possessing, most of the time the screenshots are from the pov of the pawn camera but every few images or so there will be a single screenshot fr… --- ## [How to spawn actors from a Function Library?](https://forums.unrealengine.com/t/how-to-spawn-actors-from-a-function-library/2856067)
**Author:** [@AgentMic0604](https://forums.unrealengine.com/u/AgentMic0604)\ **Replies:** 2\ **Last updated:** [November 15, 2026, 8:30am UTC](https://forums.unrealengine.com/t/how-to-spawn-actors-from-a-function-library/2856067 "2026-11-15T08:30:49Z")
SpawnActorFromClass cannot be used at all within function libraries or object classes. Not only does it fail to appear in search results, but it is not even permitted to be placed. It cannot be used even when WorldContex… --- ## [MultiMonitor Support?](https://forums.unrealengine.com/t/multimonitor-support/1917953)
**Author:** [@TFA\_aaronfhd](https://forums.unrealengine.com/u/TFA_aaronfhd)\ **Replies:** 1\ **Last updated:** [November 15, 2026, 8:29am UTC](https://forums.unrealengine.com/t/multimonitor-support/1917953 "2026-11-15T08:29:55Z")
Looking to see if there is a way to set up Multiple monitors for my game. I have a touch screen that I would like to have my UI and that will control what is happening on my game. Think of kids playing a soccer game an… --- ## [Painting a level with character, how to read render target painted amount?](https://forums.unrealengine.com/t/painting-a-level-with-character-how-to-read-render-target-painted-amount/2350461)
**Author:** [@Appear](https://forums.unrealengine.com/u/Appear)\ **Replies:** 4\ **Last updated:** [November 15, 2026, 8:28am UTC](https://forums.unrealengine.com/t/painting-a-level-with-character-how-to-read-render-target-painted-amount/2350461 "2026-11-15T08:28:38Z")
I am trying to paint a level with my character, this works fine with render target. But I want to know if it has been painted on, and how much of it has been painted as 100% painted will be a victory condition in my gam… --- ## [Migrating 3D Space Survival Game Logic from Web (Three.js) to Unreal Engine: Best Approach for Resource Management System? ](https://forums.unrealengine.com/t/migrating-3d-space-survival-game-logic-from-web-three-js-to-unreal-engine-best-approach-for-resource-management-system/2852006)
**Author:** [@GallantSwift2634](https://forums.unrealengine.com/u/GallantSwift2634)\ **Replies:** 3\ **Last updated:** [November 15, 2026, 8:01am UTC](https://forums.unrealengine.com/t/migrating-3d-space-survival-game-logic-from-web-three-js-to-unreal-engine-best-approach-for-resource-management-system/2852006 "2026-11-15T08:01:46Z")
Seeking Advice: Migrating Our 3D Space Survival Game (AstroBase) to Unreal Engine Hi everyone! I’m Ratul, and I’m currently leading a team developing AstroBase, a 3D Moon and Mars survival simulation game originally bui… --- ## [Navmesh has cracks in uneven landscape](https://forums.unrealengine.com/t/navmesh-has-cracks-in-uneven-landscape/2856116)
**Author:** [@HelioHsx](https://forums.unrealengine.com/u/HelioHsx)\ **Replies:** 0\ **Last updated:** [November 15, 2026, 7:26am UTC](https://forums.unrealengine.com/t/navmesh-has-cracks-in-uneven-landscape/2856116 "2026-11-15T07:26:30Z")
Hello, I’ve got holes in the navmesh, mostly when bounds meet with each other. These holes prevent the AI from traversing there. I have tried changing many settings and nothing has helped so far. :frowning: Sculpting th… --- ## [Navmesh cracks in irregular geometry such as hills](https://forums.unrealengine.com/t/navmesh-cracks-in-irregular-geometry-such-as-hills/408907)
**Author:** [@anonymous\_user\_f519f153](https://forums.unrealengine.com/u/anonymous_user_f519f153)\ **Replies:** 5\ **Last updated:** [November 15, 2026, 7:22am UTC](https://forums.unrealengine.com/t/navmesh-cracks-in-irregular-geometry-such-as-hills/408907 "2026-11-15T07:22:28Z")
We are building the NPCs in our game to use the nav mesh for navigation. However, they frequently get stuck on the cracks of navmesh in our level, which largely comprises of hilly and irregular elevation. Is there any v… --- ## [Translucent materials don't work with camera facing WPO](https://forums.unrealengine.com/t/translucent-materials-dont-work-with-camera-facing-wpo/2855868)
**Author:** [@roughdominator](https://forums.unrealengine.com/u/roughdominator)\ **Replies:** 2\ **Last updated:** [November 15, 2026, 6:18am UTC](https://forums.unrealengine.com/t/translucent-materials-dont-work-with-camera-facing-wpo/2855868 "2026-11-15T06:18:44Z")
Hello. I’m trying to create a fake glow effect for my light props so they are visible even from way afar. I created a setup so the fake glow plane is always facing the camera. Problem is, it only works if the material is… --- ## [World's weirdest replication bug ever](https://forums.unrealengine.com/t/worlds-weirdest-replication-bug-ever/2855902)
**Author:** [@Frosted\_mann](https://forums.unrealengine.com/u/Frosted_mann)\ **Replies:** 2\ **Last updated:** [November 15, 2026, 5:57am UTC](https://forums.unrealengine.com/t/worlds-weirdest-replication-bug-ever/2855902 "2026-11-15T05:57:16Z")
Hello, i’m trying to replicate a freelook offset as a protected member of my player character. Doing this has proven to be the world’s most difficult challenge ever, however. If anyone has more technical insight as to wh… --- ## [Epic games megajam AI ](https://forums.unrealengine.com/t/epic-games-megajam-ai/2855908)
**Author:** [@MrBlack1907](https://forums.unrealengine.com/u/MrBlack1907)\ **Replies:** 1\ **Last updated:** [November 14, 2026, 10:33pm UTC](https://forums.unrealengine.com/t/epic-games-megajam-ai/2855908 "2026-11-14T22:33:22Z")
Hello Epic Team! I joined the 2026 Epic AI MegaJam on November 11, 2026. I received the official email confirming that the jam had started this morning, so my registration is successful. However, I did not receive the… --- ## [Cosmetics changing when you drop ](https://forums.unrealengine.com/t/cosmetics-changing-when-you-drop/2855850)
**Author:** [@giuulioo](https://forums.unrealengine.com/u/giuulioo)\ **Replies:** 1\ **Last updated:** [November 14, 2026, 10:12pm UTC](https://forums.unrealengine.com/t/cosmetics-changing-when-you-drop/2855850 "2026-11-14T22:12:14Z")
When I drop from the Going Merry my skin has a different dress color, my pickaxe turns the basic one, same for the glider. Also I noticed that in the Lobby my skin doesn’t render, it disappears or keeps charging and rem… --- ## [Anim Dynamics Causing Mesh to Disappear](https://forums.unrealengine.com/t/anim-dynamics-causing-mesh-to-disappear/2856014)
**Author:** [@Dead\_Dogma](https://forums.unrealengine.com/u/Dead_Dogma)\ **Replies:** 0\ **Last updated:** [November 14, 2026, 9:36pm UTC](https://forums.unrealengine.com/t/anim-dynamics-causing-mesh-to-disappear/2856014 "2026-11-14T21:36:37Z")
Hello, I am attempting to create a procedural animation system. Similar to what was done in Overgrowth. In overgrowth the arms / ears have a softness parameter for the bones which allow them to sway with movement. https… --- ## [Ending debris physics without removing the debris: how my Chaos Destruction plugin manages fragment lifecycle](https://forums.unrealengine.com/t/ending-debris-physics-without-removing-the-debris-how-my-chaos-destruction-plugin-manages-fragment-lifecycle/2856012)
**Author:** [@B\_Fury](https://forums.unrealengine.com/u/B_Fury)\ **Replies:** 0\ **Last updated:** [November 14, 2026, 8:50pm UTC](https://forums.unrealengine.com/t/ending-debris-physics-without-removing-the-debris-how-my-chaos-destruction-plugin-manages-fragment-lifecycle/2856012 "2026-11-14T20:50:23Z")
This is a write-up of how a plugin I built for Chaos Destruction works and why it is designed this way: what happens to a fragment after it breaks off, and when its physics can end while the debris stays on screen. It’s … --- ## [How do I have more control on the way motion warping is working?](https://forums.unrealengine.com/t/how-do-i-have-more-control-on-the-way-motion-warping-is-working/2856011)
**Author:** [@ImperialCrow2692](https://forums.unrealengine.com/u/ImperialCrow2692)\ **Replies:** 0\ **Last updated:** [November 14, 2026, 8:40pm UTC](https://forums.unrealengine.com/t/how-do-i-have-more-control-on-the-way-motion-warping-is-working/2856011 "2026-11-14T20:40:12Z")
(topic deleted by author) --- ## [Creating gravity physics with Newton's Law of Universal Gravitation](https://forums.unrealengine.com/t/creating-gravity-physics-with-newtons-law-of-universal-gravitation/755140)
**Author:** [@ChefVaporeon](https://forums.unrealengine.com/u/ChefVaporeon)\ **Replies:** 5\ **Last updated:** [November 14, 2026, 7:39pm UTC](https://forums.unrealengine.com/t/creating-gravity-physics-with-newtons-law-of-universal-gravitation/755140 "2026-11-14T19:39:45Z")
Hello! This is my first dev post. I would like to create gravity for an object or many objects using Newton’s Law of Universal Gravitation. From what I have seen on other posts it is possible to change gravity through … --- ## [How to enable my custom Third PersonCharacter to walk on walls?](https://forums.unrealengine.com/t/how-to-enable-my-custom-third-personcharacter-to-walk-on-walls/1356086)
**Author:** [@AndresAdarveO\_o](https://forums.unrealengine.com/u/AndresAdarveO_o)\ **Replies:** 4\ **Last updated:** [November 14, 2026, 7:37pm UTC](https://forums.unrealengine.com/t/how-to-enable-my-custom-third-personcharacter-to-walk-on-walls/1356086 "2026-11-14T19:37:36Z")
So, i already made a character in wich i can modify the gravity direction througt its movement component, i want to make some sort of “planetoids” and let my character walk there calculating the gravity direction in the … --- ## [Why ZoneGraphAnnotationComponent designed as a component instead of a subsystem?](https://forums.unrealengine.com/t/why-zonegraphannotationcomponent-designed-as-a-component-instead-of-a-subsystem/2854310)
**Author:** [@hundun](https://forums.unrealengine.com/u/hundun)\ **Replies:** 1\ **Last updated:** [November 14, 2026, 7:28pm UTC](https://forums.unrealengine.com/t/why-zonegraphannotationcomponent-designed-as-a-component-instead-of-a-subsystem/2854310 "2026-11-14T19:28:35Z")
It will register tag by GetAnnotationTags(),but if there are more than two AnnotationComp in the same world,ide will tell me “Annotation at index 16 is already set to TrafficLightAnnotation.”,this maybe designed for prev… --- ## [Exporting Volumetrics to USD](https://forums.unrealengine.com/t/exporting-volumetrics-to-usd/2842296)
**Author:** [@HamiltonMeathous](https://forums.unrealengine.com/u/HamiltonMeathous)\ **Replies:** 4\ **Last updated:** [November 14, 2026, 7:22pm UTC](https://forums.unrealengine.com/t/exporting-volumetrics-to-usd/2842296 "2026-11-14T19:22:09Z")
Is there a way to export a Volumetric Cloud to USD? I see here USD UE Format Support | Knowledge base that VDBs are able to be imported via UsdVol, but is export also supported? I have tried exporting to USD, but when … --- ## [UE5.8 Mover Plugin Miss a UE\_API in\`\`\`](https://forums.unrealengine.com/t/ue5-8-mover-plugin-miss-a-ue-api-in/2848004)
**Author:** [@2d131372ae0d4c71b3e7534e979d8228](https://forums.unrealengine.com/u/2d131372ae0d4c71b3e7534e979d8228)\ **Replies:** 1\ **Last updated:** [November 14, 2026, 6:59pm UTC](https://forums.unrealengine.com/t/ue5-8-mover-plugin-miss-a-ue-api-in/2848004 "2026-11-14T18:59:56Z")
Engine\\Plugins\\Experimental\\Mover\\Source\\Mover\\Public Line: 207 : “UE\_API” void CancelMovesByTag(FGameplayTag Tag, bool bRequireExactMatch=false); --- ## [In an Instanced Static Mesh, in one instance, update material at runtime](https://forums.unrealengine.com/t/in-an-instanced-static-mesh-in-one-instance-update-material-at-runtime/2855898)
**Author:** [@ViaCognita](https://forums.unrealengine.com/u/ViaCognita)\ **Replies:** 1\ **Last updated:** [November 14, 2026, 6:58pm UTC](https://forums.unrealengine.com/t/in-an-instanced-static-mesh-in-one-instance-update-material-at-runtime/2855898 "2026-11-14T18:58:57Z")
Hi! I’m using Instanced Static Meshes with this Material: In one instance, I need to increase the value of the ‘Multiply’ node at runtime and then lower it after a few seconds. How can I do it? Thank you! --- ## [Github gone? ](https://forums.unrealengine.com/t/github-gone/2855842)
**Author:** [@84element84](https://forums.unrealengine.com/u/84element84)\ **Replies:** 1\ **Last updated:** [November 14, 2026, 6:38pm UTC](https://forums.unrealengine.com/t/github-gone/2855842 "2026-11-14T18:38:59Z")
looking to install exactly version 5.4 of UE,because 5.4.4 doesn’t count as 5.4 for some assets.Advice says just compile it from source…Github for UE is 404. Am I looking in the wrong place? https://github.com/EpicGames/… --- ## [Transparent material to show a white border](https://forums.unrealengine.com/t/transparent-material-to-show-a-white-border/2852070)
**Author:** [@ViaCognita](https://forums.unrealengine.com/u/ViaCognita)\ **Replies:** 4\ **Last updated:** [November 14, 2026, 5:57pm UTC](https://forums.unrealengine.com/t/transparent-material-to-show-a-white-border/2852070 "2026-11-14T17:57:52Z")
Hi! I’ve created a transparent PNG to show a white border around some actors. To do it I have created a material with this texture: Set the material as masked: But, when I use it, I see this: I have also tri… --- ## [Problemas com o RTG e rig ](https://forums.unrealengine.com/t/problemas-com-o-rtg-e-rig/2854116)
**Author:** [@Maria\_Hashi](https://forums.unrealengine.com/u/Maria_Hashi)\ **Replies:** 2\ **Last updated:** [November 14, 2026, 5:27pm UTC](https://forums.unrealengine.com/t/problemas-com-o-rtg-e-rig/2854116 "2026-11-14T17:27:24Z")
Estou com um problema, eu tenho um personagem no blender e trouxe ele para a UE5, mas ele tem a rig do the sims 4, e quando vou realizar o retarget, qualquer animação, as pernas ficam esticadas a partir da pelvis pra bai… --- ## [Creating an animation mod for a game without touching base game assets ](https://forums.unrealengine.com/t/creating-an-animation-mod-for-a-game-without-touching-base-game-assets/2855831)
**Author:** [@forpluginsnoname](https://forums.unrealengine.com/u/forpluginsnoname)\ **Replies:** 1\ **Last updated:** [November 14, 2026, 5:00pm UTC](https://forums.unrealengine.com/t/creating-an-animation-mod-for-a-game-without-touching-base-game-assets/2855831 "2026-11-14T17:00:30Z")
Hello everybody.This is my first time messing with UE5 and modding in general. Im for days now struggling to understand and try to create a mod for the game Stalker 2. I tried reading sites, asking dumb chatbots, looking… --- ## [How to properly combine a Skin (Subsurface) Slab and a Transparent Slab using Substrate Horizontal Blend while preserving SSS?](https://forums.unrealengine.com/t/how-to-properly-combine-a-skin-subsurface-slab-and-a-transparent-slab-using-substrate-horizontal-blend-while-preserving-sss/2855833)
**Author:** [@W.Z.H.BRUZ](https://forums.unrealengine.com/u/W.Z.H.BRUZ)\ **Replies:** 1\ **Last updated:** [November 14, 2026, 4:34pm UTC](https://forums.unrealengine.com/t/how-to-properly-combine-a-skin-subsurface-slab-and-a-transparent-slab-using-substrate-horizontal-blend-while-preserving-sss/2855833 "2026-11-14T16:34:59Z")
Hi Epic Team / Substrate experts, I am working on a character material in Unreal Engine using the Substrate framework. My goal is to create a hybrid material where part of the surface is skin (using Subsurface/Diffusion… --- ## [Add a thing to help fix launching/errors/world creation errors? ](https://forums.unrealengine.com/t/add-a-thing-to-help-fix-launching-errors-world-creation-errors/2855885)
**Author:** [@Demon\_Crowley](https://forums.unrealengine.com/u/Demon_Crowley)\ **Replies:** 0\ **Last updated:** [November 14, 2026, 4:28pm UTC](https://forums.unrealengine.com/t/add-a-thing-to-help-fix-launching-errors-world-creation-errors/2855885 "2026-11-14T16:28:48Z")
Seeing no thing to fix a problem with my creating a world that is just annoying, --- ## [Proposal for Unreal Engine: An AI-Powered Development Ecosystem ](https://forums.unrealengine.com/t/proposal-for-unreal-engine-an-ai-powered-development-ecosystem/2855877)
**Author:** [@kakashihatakeofc](https://forums.unrealengine.com/u/kakashihatakeofc)\ **Replies:** 0\ **Last updated:** [November 14, 2026, 4:27pm UTC](https://forums.unrealengine.com/t/proposal-for-unreal-engine-an-ai-powered-development-ecosystem/2855877 "2026-11-14T16:27:42Z")
To the Epic Games Team, I would like to present a suggestion for the future of Unreal Engine: an AI-powered development ecosystem designed to make game development more accessible to beginners, students, and independent… --- ## [Unable to Install Unreal Engine – Install Engine and + Buttons Do Nothing](https://forums.unrealengine.com/t/unable-to-install-unreal-engine-install-engine-and-buttons-do-nothing/2746906)
**Author:** [@vulpesvox](https://forums.unrealengine.com/u/vulpesvox)\ **Replies:** 32\ **Last updated:** [November 14, 2026, 4:27pm UTC](https://forums.unrealengine.com/t/unable-to-install-unreal-engine-install-engine-and-buttons-do-nothing/2746906 "2026-11-14T16:27:27Z")
I am unable to install any Unreal Engine version through the Epic Games Launcher. System: Windows 11 Windows build: 10.0.26200.9168 Epic Games Launcher UI Build: v26.5.18-cc208e09 Epic installer: EpicInstaller-20.1.4-… [Next page](https://forums.unrealengine.com/c/development-discussion/11.md?page=1)