# C++ **URL:** https://forums.unrealengine.com/c/development-discussion/programming-scripting/c-programming/29.md?page=1 [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) **Page:** 2 --- ## [Day 6 - Interaction System in C++ (Unreal Engine 5)](https://forums.unrealengine.com/t/day-6-interaction-system-in-c-unreal-engine-5/2845656)
**Author:** [@kevinpc\_1](https://forums.unrealengine.com/u/kevinpc_1)\ **Replies:** 0\ **Last updated:** [October 27, 2026, 11:22am UTC](https://forums.unrealengine.com/t/day-6-interaction-system-in-c-unreal-engine-5/2845656 "2026-10-27T11:22:38Z")
Hello everyone, I’ve just completed Day 6 of my Unreal Engine 5 Gameplay Engineer journey. Today I implemented a basic Interaction System entirely in C++ using Enhanced Input and Line Traces. Features implemented: … --- ## [(GAS) How to initialize attribute values with a data table?](https://forums.unrealengine.com/t/gas-how-to-initialize-attribute-values-with-a-data-table/2845035)
**Author:** [@pastelfable](https://forums.unrealengine.com/u/pastelfable)\ **Replies:** 2\ **Last updated:** [October 26, 2026, 11:19pm UTC](https://forums.unrealengine.com/t/gas-how-to-initialize-attribute-values-with-a-data-table/2845035 "2026-10-26T23:19:09Z")
I can’t seem to find a straight answer on google. I have six characters in my project, and I want them all to use the same attribute sets but with different attribute values. I thought one way to do this would be to make… --- ## [Mass: specialized processors vs fewer larger processors?](https://forums.unrealengine.com/t/mass-specialized-processors-vs-fewer-larger-processors/2837463)
**Author:** [@pezzott1](https://forums.unrealengine.com/u/pezzott1)\ **Replies:** 7\ **Last updated:** [October 26, 2026, 2:17pm UTC](https://forums.unrealengine.com/t/mass-specialized-processors-vs-fewer-larger-processors/2837463 "2026-10-26T14:17:38Z")
I’m relatively new to ECS, and I’m currently working on a project where I’m trying to move a significant part of the simulation and gameplay into Mass. I’m running into an architectural question: to keep responsibilitie… --- ## [Día 5 - Sistema de Doble Salto en C++ (Unreal Engine 5)](https://forums.unrealengine.com/t/dia-5-sistema-de-doble-salto-en-c-unreal-engine-5/2845245)
**Author:** [@kevinpc\_1](https://forums.unrealengine.com/u/kevinpc_1)\ **Replies:** 0\ **Last updated:** [October 26, 2026, 11:25am UTC](https://forums.unrealengine.com/t/dia-5-sistema-de-doble-salto-en-c-unreal-engine-5/2845245 "2026-10-26T11:25:11Z")
Hola a todos. He completado el Día 5 de mi serie de aprendizaje para convertirme en Gameplay Engineer utilizando Unreal Engine 5 y C++. En esta ocasión he implementado un sistema de Doble Salto utilizando Enhanced Inpu… --- ## [Day 5 - Double Jump System in C++ (Unreal Engine 5)](https://forums.unrealengine.com/t/day-5-double-jump-system-in-c-unreal-engine-5/2845238)
**Author:** [@kevinpc\_1](https://forums.unrealengine.com/u/kevinpc_1)\ **Replies:** 0\ **Last updated:** [October 26, 2026, 10:46am UTC](https://forums.unrealengine.com/t/day-5-double-jump-system-in-c-unreal-engine-5/2845238 "2026-10-26T10:46:02Z")
Hello everyone, I’ve just completed Day 5 of my Unreal Engine 5 Gameplay Engineer journey. Today I implemented a Double Jump System entirely in C++ using Enhanced Input and the Character Movement Component. Features i… --- ## [WaterBodyRiver not carving into landscape properly ](https://forums.unrealengine.com/t/waterbodyriver-not-carving-into-landscape-properly/2844449)
**Author:** [@wholehuman](https://forums.unrealengine.com/u/wholehuman)\ **Replies:** 1\ **Last updated:** [October 26, 2026, 5:47am UTC](https://forums.unrealengine.com/t/waterbodyriver-not-carving-into-landscape-properly/2844449 "2026-10-26T05:47:19Z")
I am trying to make a river for my map but for some reason it refuses to carve or morph into the terrain surrounding it. I have been battling with this for hours and finally decided to ask for some help. I’ve searched… --- ## [Unpaid/colaboration](https://forums.unrealengine.com/t/unpaid-colaboration/2844784)
**Author:** [@herrnandezz](https://forums.unrealengine.com/u/herrnandezz)\ **Replies:** 0\ **Last updated:** [October 25, 2026, 12:49am UTC](https://forums.unrealengine.com/t/unpaid-colaboration/2844784 "2026-10-25T00:49:15Z")
WESTSIDE LEGACY — I’m looking for collaborators for an indie video game in Unreal Engine 5 Hello everyone! I am an independent developer from Spain and I am creating WESTSIDE LEGACY, an open world video game set in an … --- ## [UWidgetComponent HUD does not keep consistent screen size when zooming / changing distance – how to fix?](https://forums.unrealengine.com/t/uwidgetcomponent-hud-does-not-keep-consistent-screen-size-when-zooming-changing-distance-how-to-fix/2714815)
**Author:** [@InkSmith](https://forums.unrealengine.com/u/InkSmith)\ **Replies:** 1\ **Last updated:** [October 23, 2026, 8:12pm UTC](https://forums.unrealengine.com/t/uwidgetcomponent-hud-does-not-keep-consistent-screen-size-when-zooming-changing-distance-how-to-fix/2714815 "2026-10-23T20:12:13Z")
Hi everyone, I’m working on an RTS-style project in UE5 where each regiment actor has a floating HUD using a UWidgetComponent. Here is how I set it up: HUDWidget = CreateDefaultSubobject\(TEXT("HUDWid… --- ## [How to constrain movement component to one axis? ](https://forums.unrealengine.com/t/how-to-constrain-movement-component-to-one-axis/2739661)
**Author:** [@benjaminsmith](https://forums.unrealengine.com/u/benjaminsmith)\ **Replies:** 1\ **Last updated:** [October 23, 2026, 8:10pm UTC](https://forums.unrealengine.com/t/how-to-constrain-movement-component-to-one-axis/2739661 "2026-10-23T20:10:12Z")
Hi everyone, I have been trying to set up a system where the character movement component can only move on one axis for specific conditions. In essence the game is a 2D platformer which typically is constrained to 2D mov… --- ## [Mi camino para convertirme en Gameplay Engineer con Unreal Engine 5 y C++ (Días 1-4)](https://forums.unrealengine.com/t/mi-camino-para-convertirme-en-gameplay-engineer-con-unreal-engine-5-y-c-dias-1-4/2844256)
**Author:** [@kevinpc\_1](https://forums.unrealengine.com/u/kevinpc_1)\ **Replies:** 0\ **Last updated:** [October 23, 2026, 10:30am UTC](https://forums.unrealengine.com/t/mi-camino-para-convertirme-en-gameplay-engineer-con-unreal-engine-5-y-c-dias-1-4/2844256 "2026-10-23T10:30:05Z")
Hola a todos. He comenzado una serie práctica en la que estoy aprendiendo Unreal Engine 5 desde la perspectiva de un Gameplay Engineer, construyendo sistemas reales desde el primer día y utilizando C++ como lenguaje pri… --- ## [Day 4 Gameplay engineer](https://forums.unrealengine.com/t/day-4-gameplay-engineer/2844254)
**Author:** [@kevinpc\_1](https://forums.unrealengine.com/u/kevinpc_1)\ **Replies:** 0\ **Last updated:** [October 23, 2026, 10:15am UTC](https://forums.unrealengine.com/t/day-4-gameplay-engineer/2844254 "2026-10-23T10:15:29Z")
Hi everyone, I’ve just completed Day 4 of my Unreal Engine 5 Gameplay Engineer learning journey. In this video, I implemented a Sprint System in C++ using Enhanced Input and the Character Movement Component. Topics co… --- ## [Custom groom (Alembic from Blender) renders in PIE but is completely invisible in Standalone and packaged build — UE 5.8 MetaHuman](https://forums.unrealengine.com/t/custom-groom-alembic-from-blender-renders-in-pie-but-is-completely-invisible-in-standalone-and-packaged-build-ue-5-8-metahuman/2841252)
**Author:** [@Marsal02](https://forums.unrealengine.com/u/Marsal02)\ **Replies:** 3\ **Last updated:** [October 23, 2026, 5:59am UTC](https://forums.unrealengine.com/t/custom-groom-alembic-from-blender-renders-in-pie-but-is-completely-invisible-in-standalone-and-packaged-build-ue-5-8-metahuman/2841252 "2026-10-23T05:59:09Z")
Setup: UE 5.8. MetaHuman Character → Assemble → Blueprint actor. A custom hair groom was authored by an artist in Blender and exported as Alembic. It imports fine (42,634 curves, Root UV and Width attributes present). Ha… --- ## [UE 5.8.2: custom C++ autopilot diverges from fixed-step forecasts with variable frame deltas ](https://forums.unrealengine.com/t/ue-5-8-2-custom-c-autopilot-diverges-from-fixed-step-forecasts-with-variable-frame-deltas/2842959)
**Author:** [@Jamshid.B](https://forums.unrealengine.com/u/Jamshid.B)\ **Replies:** 2\ **Last updated:** [October 23, 2026, 12:53am UTC](https://forums.unrealengine.com/t/ue-5-8-2-custom-c-autopilot-diverges-from-fixed-step-forecasts-with-variable-frame-deltas/2842959 "2026-10-23T00:53:16Z")
Hello everyone, I am developing MEGACUBE 2.0 in Unreal Engine 5.8.2 (CL56702186), on Win64. I would appreciate guidance on input scheduling and safe replanning for a custom C++ gameplay-test autopilot. Our AActor runne… --- ## [un problema de fortnite ](https://forums.unrealengine.com/t/un-problema-de-fortnite/2842983)
**Author:** [@Maximo\_malo1](https://forums.unrealengine.com/u/Maximo_malo1)\ **Replies:** 1\ **Last updated:** [October 22, 2026, 7:58pm UTC](https://forums.unrealengine.com/t/un-problema-de-fortnite/2842983 "2026-10-22T19:58:03Z")
porque me sale lo del vpn o lo del proxy por la cara y no tengo nada --- ## [My Unreal Engine C++ Learning Journey | Days 1-3 Progress ](https://forums.unrealengine.com/t/my-unreal-engine-c-learning-journey-days-1-3-progress/2843906)
**Author:** [@kevinpc\_1](https://forums.unrealengine.com/u/kevinpc_1)\ **Replies:** 0\ **Last updated:** [October 22, 2026, 4:32pm UTC](https://forums.unrealengine.com/t/my-unreal-engine-c-learning-journey-days-1-3-progress/2843906 "2026-10-22T16:32:54Z")
Hi everyone, I’m currently learning Unreal Engine with a strong focus on C++ programming and engine systems. During Days 1-3, I successfully: Created a custom C++ project. Set up my own character class. Learned how U… --- ## [Metadata file missing C++](https://forums.unrealengine.com/t/metadata-file-missing-c/2843792)
**Author:** [@Ruslanmin2](https://forums.unrealengine.com/u/Ruslanmin2)\ **Replies:** 1\ **Last updated:** [October 22, 2026, 2:40pm UTC](https://forums.unrealengine.com/t/metadata-file-missing-c/2843792 "2026-10-22T14:40:38Z")
I am using VS2026 now, everything was okay until I got such errors even after successful builds: What cause such error during compilation? Please help me to resolve this issue! Ruslan --- ## [How do I completely stop the Editor from making calls to URL https://www.google.com/generate\_204 ?](https://forums.unrealengine.com/t/how-do-i-completely-stop-the-editor-from-making-calls-to-url-https-www-google-com-generate-204/2681843)
**Author:** [@Prreta](https://forums.unrealengine.com/u/Prreta)\ **Replies:** 11\ **Last updated:** [October 22, 2026, 11:26am UTC](https://forums.unrealengine.com/t/how-do-i-completely-stop-the-editor-from-making-calls-to-url-https-www-google-com-generate-204/2681843 "2026-10-22T11:26:46Z")
This call is firing constantly during my attempt to stream a large amount of data from a custom server. My code is C++ on both ends. when the mentioned URL is not connected, it introduces a 3 second delay between actual … --- ## [Getting vertex from FaceIndex on SkeletalMeshComponent?](https://forums.unrealengine.com/t/getting-vertex-from-faceindex-on-skeletalmeshcomponent/63072)
**Author:** [@514mart](https://forums.unrealengine.com/u/514mart)\ **Replies:** 5\ **Last updated:** [October 22, 2026, 2:40am UTC](https://forums.unrealengine.com/t/getting-vertex-from-faceindex-on-skeletalmeshcomponent/63072 "2026-10-22T02:40:38Z")
Hi all, I’m trying to retrieve the vertices of a triangle on a skeletal mesh. I’ve managed to get the FaceIndex using a LineTrace, but I couldn’t find out how to convert this FaceIndex to the actual vertices indexes. H… --- ## [Adding to SubObject list in Constructor causing reference exception](https://forums.unrealengine.com/t/adding-to-subobject-list-in-constructor-causing-reference-exception/2409833)
**Author:** [@Kotaru\_1](https://forums.unrealengine.com/u/Kotaru_1)\ **Replies:** 2\ **Last updated:** [October 21, 2026, 1:01pm UTC](https://forums.unrealengine.com/t/adding-to-subobject-list-in-constructor-causing-reference-exception/2409833 "2026-10-21T13:01:01Z")
I’m following this guide on SubObject replication, but I ran into this issue that I’m not understanding The guide says to add the following to the Actor’s constructor if(IsValid(MyActorSubobject)) { … --- ## [TArray is the same for every players in Multiplayer - C++](https://forums.unrealengine.com/t/tarray-is-the-same-for-every-players-in-multiplayer-c/1526134)
**Author:** [@Stul](https://forums.unrealengine.com/u/Stul)\ **Replies:** 3\ **Last updated:** [October 21, 2026, 11:49am UTC](https://forums.unrealengine.com/t/tarray-is-the-same-for-every-players-in-multiplayer-c/1526134 "2026-10-21T11:49:01Z")
Hey guys, so I have an Inventory which is an ActorComponent and in which I have a TArray of struct: UPROPERTY(BlueprintReadWrite, EditAnywhere, meta=(AllowPrivateAccess = "true"), Replicated) TArray\ **Author:** [@Onurbbgm](https://forums.unrealengine.com/u/Onurbbgm)\ **Replies:** 2\ **Last updated:** [October 21, 2026, 10:17am UTC](https://forums.unrealengine.com/t/trying-to-create-an-arch-for-throwing-objects-using-predict-projectile-path/2432630 "2026-10-21T10:17:59Z") Hi, I am trying to make an arch to display an object trajectory when throwing it. For that I am using Predict Projectile Path to do this, however I am having a couple of issues. One is I am having trouble to display i… --- ## [Architecture advice needed: Designing a Gravity Receiver for an Outer Wilds style gravity system ](https://forums.unrealengine.com/t/architecture-advice-needed-designing-a-gravity-receiver-for-an-outer-wilds-style-gravity-system/2702730)
**Author:** [@YanMo\_Liu](https://forums.unrealengine.com/u/YanMo_Liu)\ **Replies:** 2\ **Last updated:** [October 21, 2026, 9:38am UTC](https://forums.unrealengine.com/t/architecture-advice-needed-designing-a-gravity-receiver-for-an-outer-wilds-style-gravity-system/2702730 "2026-10-21T09:38:04Z")
Hi everyone, I’m currently working on an Outer Wilds clone in UE. I’ve designed a custom gravity system using a UGravitySourceComponent and a UGravitySubsystem. The subsystem maintains containers (arrays) to keep track … --- ## [open star wwawwrs racing on my rog it runs but on my main 2 situation A-it opens the game but gets stuck on accepting the rules and condition and all or crash and shows me code from unreal engine i updated all even my bios and tips? ](https://forums.unrealengine.com/t/open-star-wwawwrs-racing-on-my-rog-it-runs-but-on-my-main-2-situation-a-it-opens-the-game-but-gets-stuck-on-accepting-the-rules-and-condition-and-all-or-crash-and-shows-me-code-from-unreal-engine-i-updated-all-even-my-bios-and-tips/2843063)
**Author:** [@Sandiego16](https://forums.unrealengine.com/u/Sandiego16)\ **Replies:** 0\ **Last updated:** [October 20, 2026, 8:11pm UTC](https://forums.unrealengine.com/t/open-star-wwawwrs-racing-on-my-rog-it-runs-but-on-my-main-2-situation-a-it-opens-the-game-but-gets-stuck-on-accepting-the-rules-and-condition-and-all-or-crash-and-shows-me-code-from-unreal-engine-i-updated-all-even-my-bios-and-tips/2843063 "2026-10-20T20:11:45Z")
--- ## [Replication of TArray of UObjects using new 5.1 implemention?](https://forums.unrealengine.com/t/replication-of-tarray-of-uobjects-using-new-5-1-implemention/1319159)
**Author:** [@RipRydah](https://forums.unrealengine.com/u/RipRydah)\ **Replies:** 3\ **Last updated:** [October 20, 2026, 7:10pm UTC](https://forums.unrealengine.com/t/replication-of-tarray-of-uobjects-using-new-5-1-implemention/1319159 "2026-10-20T19:10:04Z")
So Im trying to replicate my inventory system thats holds item in a TArray of UObjects (item class). I’m trying the new replicated Subobjects thats listed here: I can get it to work with with single replicated UObject… --- ## [FPlatformApplicationMisc::ClipboardCopy() fails to link](https://forums.unrealengine.com/t/fplatformapplicationmisc-clipboardcopy-fails-to-link/111083)
**Author:** [@Whammy](https://forums.unrealengine.com/u/Whammy)\ **Replies:** 8\ **Last updated:** [October 19, 2026, 3:50pm UTC](https://forums.unrealengine.com/t/fplatformapplicationmisc-clipboardcopy-fails-to-link/111083 "2026-10-19T15:50:24Z")
I’ve been taking care of all the deprecated warnings in my 4.18 code and changed “FGenericPlatformMisc::ClipboardCopy()” to “FPlatformApplicationMisc::ClipboardCopy()” as demanded by the compiler. It compiles fine, but r… --- ## [Unreal seems to be hard coded to block file dialogs?](https://forums.unrealengine.com/t/unreal-seems-to-be-hard-coded-to-block-file-dialogs/2023210)
**Author:** [@crossmr](https://forums.unrealengine.com/u/crossmr)\ **Replies:** 4\ **Last updated:** [October 19, 2026, 8:26am UTC](https://forums.unrealengine.com/t/unreal-seems-to-be-hard-coded-to-block-file-dialogs/2023210 "2026-10-19T08:26:58Z")
So, purchased this plugin for 5.3 to open pdfs. Great plugin, has an ‘open’ button that lets you pick a file with a file dialog. Saw the demo of it working, but when I tried it I got this error saying ‘Filedialogs are pr… --- ## [How to Convert FString to TChar? ClipboardCopy 4.25](https://forums.unrealengine.com/t/how-to-convert-fstring-to-tchar-clipboardcopy-4-25/143274)
**Author:** [@Jacobm343hp](https://forums.unrealengine.com/u/Jacobm343hp)\ **Replies:** 1\ **Last updated:** [October 19, 2026, 7:51am UTC](https://forums.unrealengine.com/t/how-to-convert-fstring-to-tchar-clipboardcopy-4-25/143274 "2026-10-19T07:51:50Z")
Hello, I’m trying to simply expose a “copy string to Windows Clipboard function” to blueprint but I keep getting some kind of compiler error about Tchar conversion I’ve struggled for a long time with TChars and Chars v… --- ## [Async access to RenderTargets?](https://forums.unrealengine.com/t/async-access-to-rendertargets/358888)
**Author:** [@flipswitchingmonkey](https://forums.unrealengine.com/u/flipswitchingmonkey)\ **Replies:** 1\ **Last updated:** [October 18, 2026, 8:37pm UTC](https://forums.unrealengine.com/t/async-access-to-rendertargets/358888 "2026-10-18T20:37:44Z")
Is there any way to get asynchronous access to RenderTargets? ReadPixels unfortunately checks whether it is being called from the GameThread and if not, fails. Is there a way to block RenderTargets so async access would … --- ## [How can i hide game window from the Windows taskbar?](https://forums.unrealengine.com/t/how-can-i-hide-game-window-from-the-windows-taskbar/90298)
**Author:** [@yimox](https://forums.unrealengine.com/u/yimox)\ **Replies:** 1\ **Last updated:** [October 18, 2026, 8:30pm UTC](https://forums.unrealengine.com/t/how-can-i-hide-game-window-from-the-windows-taskbar/90298 "2026-10-18T20:30:45Z")
Only thing i found in the API is: SWindow::AppearsInTaskbar. This function just return bool indicating whether this window show up in the taskbar and do nothing. Is there a way to use unreal engine to hide my game wind… --- ## [Need help properly replicaiting or doing client side prediction on chaos geometry collection.](https://forums.unrealengine.com/t/need-help-properly-replicaiting-or-doing-client-side-prediction-on-chaos-geometry-collection/2579940)
**Author:** [@xsmokumsx](https://forums.unrealengine.com/u/xsmokumsx)\ **Replies:** 1\ **Last updated:** [October 18, 2026, 10:51am UTC](https://forums.unrealengine.com/t/need-help-properly-replicaiting-or-doing-client-side-prediction-on-chaos-geometry-collection/2579940 "2026-10-18T10:51:06Z")
Does anyone here know if its possible to do client side prediction on Geometry collections? I’ve got a chaos field system running, but my only problem right now is it only seems to run on my server. I would love for my p… [Previous page](https://forums.unrealengine.com/c/development-discussion/programming-scripting/c-programming/29.md) [Next page](https://forums.unrealengine.com/c/development-discussion/programming-scripting/c-programming/29.md?page=2)