# Programming & Scripting **URL:** https://forums.unrealengine.com/c/development-discussion/programming-scripting/148.md?page=12 [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) **Page:** 13 --- ## [Custom data in GameplayCueParameters](https://forums.unrealengine.com/t/custom-data-in-gameplaycueparameters/2253824)
**Author:** [@reisandbeans](https://forums.unrealengine.com/u/reisandbeans)\ **Replies:** 5\ **Last updated:** [October 21, 2026, 11:47am UTC](https://forums.unrealengine.com/t/custom-data-in-gameplaycueparameters/2253824 "2026-10-21T11:47:06Z")
I’m using Gameplay Cues because of the ease to replicate visual effects to all clients in my multiplayer game. However, I wanted to pass additional data to GameplayCueParameters (mostrly parameters for the NiagaraSystem … --- ## [Trying to make changeable profile picture in runtime](https://forums.unrealengine.com/t/trying-to-make-changeable-profile-picture-in-runtime/681296)
**Author:** [@Bounos](https://forums.unrealengine.com/u/Bounos)\ **Replies:** 1\ **Last updated:** [October 21, 2026, 10:30am UTC](https://forums.unrealengine.com/t/trying-to-make-changeable-profile-picture-in-runtime/681296 "2026-10-21T10:30:08Z")
Hi, I’m new to making games and i have some troubles making some menu. I want to make a profile like menu where player would be able to change an image that is already their with one they would choose frome their own P… --- ## [What is the best way to implement an input timeout?](https://forums.unrealengine.com/t/what-is-the-best-way-to-implement-an-input-timeout/1753804)
**Author:** [@HellDunkelkeit](https://forums.unrealengine.com/u/HellDunkelkeit)\ **Replies:** 4\ **Last updated:** [October 21, 2026, 10:27am UTC](https://forums.unrealengine.com/t/what-is-the-best-way-to-implement-an-input-timeout/1753804 "2026-10-21T10:27:39Z")
I would like to get notified if the player does not interact with the game for some time so i can go to standby / pause. Please help. --- ## [Copy paste text in game](https://forums.unrealengine.com/t/copy-paste-text-in-game/425702)
**Author:** [@phaeton1911](https://forums.unrealengine.com/u/phaeton1911)\ **Replies:** 2\ **Last updated:** [October 21, 2026, 10:25am UTC](https://forums.unrealengine.com/t/copy-paste-text-in-game/425702 "2026-10-21T10:25:40Z")
heres a genius idea i just thought up but am not genius enough to make would it be possible to blueprint a copy/paste function to work in game? say if i had a block of text written in a widget can the cursor be used to… --- ## [Trying to create an arch for throwing objects using predict projectile path](https://forums.unrealengine.com/t/trying-to-create-an-arch-for-throwing-objects-using-predict-projectile-path/2432630)
**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… --- ## [How to modify ur gravity for walking on a sphere?](https://forums.unrealengine.com/t/how-to-modify-ur-gravity-for-walking-on-a-sphere/1294252)
**Author:** [@azman](https://forums.unrealengine.com/u/azman)\ **Replies:** 6\ **Last updated:** [October 21, 2026, 10:15am UTC](https://forums.unrealengine.com/t/how-to-modify-ur-gravity-for-walking-on-a-sphere/1294252 "2026-10-21T10:15:13Z")
Hi, I’m making a simple game where the character is walking on this giant sphere that looks like a planet. But would like your help on how can I make it so that when the character walks in a certain direction of the sphe… --- ## [Predict projectile path not working](https://forums.unrealengine.com/t/predict-projectile-path-not-working/2479986)
**Author:** [@Charlie-L18](https://forums.unrealengine.com/u/Charlie-L18)\ **Replies:** 1\ **Last updated:** [October 21, 2026, 10:13am UTC](https://forums.unrealengine.com/t/predict-projectile-path-not-working/2479986 "2026-10-21T10:13:15Z")
Hello I am working on pIatformer 2.5d game. I made my character throw an object, aims an throw. But I want it to make a trajectory path visible. It only appears the begining of the path on the character’s hand, but not … --- ## [What's the preferred way to replicate ActorComponent?](https://forums.unrealengine.com/t/whats-the-preferred-way-to-replicate-actorcomponent/1713733)
**Author:** [@MaskedFuyu](https://forums.unrealengine.com/u/MaskedFuyu)\ **Replies:** 5\ **Last updated:** [October 21, 2026, 10:11am UTC](https://forums.unrealengine.com/t/whats-the-preferred-way-to-replicate-actorcomponent/1713733 "2026-10-21T10:11:18Z")
The 4.27 docs says we can just AActorComponent::SetIsReplicated(true) if we want to replicate the component. While this seems work in UE5 but I can not find it describes in docs. The latest docs shows other ways to repl… --- ## [Best approach for Multiplayer Data thing](https://forums.unrealengine.com/t/best-approach-for-multiplayer-data-thing/1950642)
**Author:** [@BadCompany024](https://forums.unrealengine.com/u/BadCompany024)\ **Replies:** 22\ **Last updated:** [October 21, 2026, 10:09am UTC](https://forums.unrealengine.com/t/best-approach-for-multiplayer-data-thing/1950642 "2026-10-21T10:09:09Z")
This game I’m making is an online Hero-Shooter FPS MOBA, where each player have data for stuff, specifically Owned Heroes/Classes (An example would be like in League of Legends) and Equipment Inventory (Example would be … --- ## [Why stores GetViewportSize zero for X and Y in standalone?](https://forums.unrealengine.com/t/why-stores-getviewportsize-zero-for-x-and-y-in-standalone/305947)
**Author:** [@simmania](https://forums.unrealengine.com/u/simmania)\ **Replies:** 12\ **Last updated:** [October 21, 2026, 9:54am UTC](https://forums.unrealengine.com/t/why-stores-getviewportsize-zero-for-x-and-y-in-standalone/305947 "2026-10-21T09:54:41Z")
It is basically the same question as here: https://answers.unrealengine.com/questions/50416/getviewportsize-returning-zeroed-vector-when-launc.html But it is not answered. Is there another way to get the full resoluti… --- ## [How to account for linear damping when predicting projectile/predicting velocity. ](https://forums.unrealengine.com/t/how-to-account-for-linear-damping-when-predicting-projectile-predicting-velocity/2590730)
**Author:** [@TheRealJonySins](https://forums.unrealengine.com/u/TheRealJonySins)\ **Replies:** 3\ **Last updated:** [October 21, 2026, 9:40am UTC](https://forums.unrealengine.com/t/how-to-account-for-linear-damping-when-predicting-projectile-predicting-velocity/2590730 "2026-10-21T09:40:27Z")
Hello all, I am trying to make my own game, and I have run into a problem that I don’t seem to know how to solve, so hopefully one of you might know the solution: So I am trying to use the SuggestProjectileVelocity node… --- ## [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 … --- ## [\[Bug\] PS2 deadlocks when a Blueprint sends a data-channel response while input is streaming (5.8)](https://forums.unrealengine.com/t/bug-ps2-deadlocks-when-a-blueprint-sends-a-data-channel-response-while-input-is-streaming-5-8/2843220)
**Author:** [@XuangXenXin1](https://forums.unrealengine.com/u/XuangXenXin1)\ **Replies:** 0\ **Last updated:** [October 21, 2026, 9:29am UTC](https://forums.unrealengine.com/t/bug-ps2-deadlocks-when-a-blueprint-sends-a-data-channel-response-while-input-is-streaming-5-8/2843220 "2026-10-21T09:29:50Z")
\# \[Bug\] Pixel Streaming 2 deadlocks when a Blueprint sends a data-channel response while input is streaming (UE 5.8) ## Summary \`FEpicRtcStreamer::SendAllPlayersMessage()\` sends data-channel messages \*\*while holding th… --- ## [Mobile Turn based Game - Artist needing Blueprint advice.](https://forums.unrealengine.com/t/mobile-turn-based-game-artist-needing-blueprint-advice/2843037)
**Author:** [@The\_Arbuthnot](https://forums.unrealengine.com/u/The_Arbuthnot)\ **Replies:** 2\ **Last updated:** [October 21, 2026, 9:25am UTC](https://forums.unrealengine.com/t/mobile-turn-based-game-artist-needing-blueprint-advice/2843037 "2026-10-21T09:25:11Z")
Hi guys My name is Mike, I am primarily a 3d artist, but want to take on an actual gamedev project in Unreal and learn a little bit of blueprints along the way. I’ve decided on something I THINK should be relatively ach… --- ## [How to do 3D Sonic / Rollin' Rascals Physics ](https://forums.unrealengine.com/t/how-to-do-3d-sonic-rollin-rascals-physics/2716467)
**Author:** [@Wrench1605](https://forums.unrealengine.com/u/Wrench1605)\ **Replies:** 14\ **Last updated:** [October 21, 2026, 9:20am UTC](https://forums.unrealengine.com/t/how-to-do-3d-sonic-rollin-rascals-physics/2716467 "2026-10-21T09:20:07Z")
Can someone assist me in trying figure out sonic’s momentum in a 3D space, specifically the ability to stick to a sloped surface. I’ve been searching for answers for weeks and it almost feels taboo for people to even men… --- ## [Replication for UI/Health comp](https://forums.unrealengine.com/t/replication-for-ui-health-comp/2739329)
**Author:** [@Bushwookie69](https://forums.unrealengine.com/u/Bushwookie69)\ **Replies:** 4\ **Last updated:** [October 21, 2026, 9:17am UTC](https://forums.unrealengine.com/t/replication-for-ui-health-comp/2739329 "2026-10-21T09:17:59Z")
I’m new to replication and multiplayer so maybe im missing something simple here. I have a HUD that on startup spawns the characters UI and makes a reference to it call “Main widget ref”. Then once selecting team and sp… --- ## [Multiplayer UI Not Updating in Real-Time After Using Item (RepNotify/Event Dispatcher Issue)](https://forums.unrealengine.com/t/multiplayer-ui-not-updating-in-real-time-after-using-item-repnotify-event-dispatcher-issue/2666685)
**Author:** [@DiegoSteve](https://forums.unrealengine.com/u/DiegoSteve)\ **Replies:** 3\ **Last updated:** [October 21, 2026, 9:15am UTC](https://forums.unrealengine.com/t/multiplayer-ui-not-updating-in-real-time-after-using-item-repnotify-event-dispatcher-issue/2666685 "2026-10-21T09:15:53Z")
Hello everyone, I’m developing a co-op survival game and I’ve run into a multiplayer UI issue that I can’t seem to solve. The Problem: When a client uses a consumable item from their inventory, the item is correctly us… --- ## [Make a projectile thrown in a curved arc?](https://forums.unrealengine.com/t/make-a-projectile-thrown-in-a-curved-arc/1675306)
**Author:** [@Zanzibarios](https://forums.unrealengine.com/u/Zanzibarios)\ **Replies:** 4\ **Last updated:** [October 21, 2026, 9:11am UTC](https://forums.unrealengine.com/t/make-a-projectile-thrown-in-a-curved-arc/1675306 "2026-10-21T09:11:34Z")
I’m working on a prototype for a turn based RPG and I’m working on projectiles and am trying to make a grenade projectile that can be thrown at a target. I already have the projectile setup so that it will spawn and hit … --- ## [How to replicate Payday's Loot Bag System.](https://forums.unrealengine.com/t/how-to-replicate-paydays-loot-bag-system/2487400)
**Author:** [@Derknomicon](https://forums.unrealengine.com/u/Derknomicon)\ **Replies:** 15\ **Last updated:** [October 21, 2026, 8:25am UTC](https://forums.unrealengine.com/t/how-to-replicate-paydays-loot-bag-system/2487400 "2026-10-21T08:25:59Z")
Greetings All, I’m wanting to figure out how to go about implementing the Loot Bag mechanics from Payday 2/3. In the either game there are objects that spawn on the maps that a player must get close enough to in order t… --- ## [UE5.6, PaperZD turn-based JRPG. How to control Flipbook displacement and performance timing for character skill animations? ](https://forums.unrealengine.com/t/ue5-6-paperzd-turn-based-jrpg-how-to-control-flipbook-displacement-and-performance-timing-for-character-skill-animations/2835756)
**Author:** [@9ec90fcd7ef5449795837a2440374be1](https://forums.unrealengine.com/u/9ec90fcd7ef5449795837a2440374be1)\ **Replies:** 2\ **Last updated:** [October 21, 2026, 5:42am UTC](https://forums.unrealengine.com/t/ue5-6-paperzd-turn-based-jrpg-how-to-control-flipbook-displacement-and-performance-timing-for-character-skill-animations/2835756 "2026-10-21T05:42:32Z")
My character’s ultimate ability consists of a sequence: wind-up → take flight → fly behind the enemy for a backstab → return to original standing position. All animation frames are contained within a single Flipbook. How… --- ## [生成项目突然出问题，求解决](https://forums.unrealengine.com/t/topic/2698053)
**Author:** [@zhangwei9861](https://forums.unrealengine.com/u/zhangwei9861)\ **Replies:** 2\ **Last updated:** [October 21, 2026, 3:30am UTC](https://forums.unrealengine.com/t/topic/2698053 "2026-10-21T03:30:03Z")
Building UnrealBuildTool in C:/Program Files/Epic Games/UE\_4.27… Running: C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\MSBuild.exe /nologo /verbosity:quiet “C:/Program Files/Epic Games/UE\_4.27/Engine/Source/Programs/Un… --- ## [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")
--- ## [Projects trigger engine rebuild](https://forums.unrealengine.com/t/projects-trigger-engine-rebuild/809488)
**Author:** [@PetterBorjesson](https://forums.unrealengine.com/u/PetterBorjesson)\ **Replies:** 8\ **Last updated:** [October 20, 2026, 8:00pm UTC](https://forums.unrealengine.com/t/projects-trigger-engine-rebuild/809488 "2026-10-20T20:00:14Z")
I have a source build of Unreal Engine and multiple different projects that use that source build. While using UE4.xx this has never been an issue. I’ve somewhat recently upgraded some projects to UE5.1 though, still wi… --- ## [What's the best inventory system/framework? Best practices?](https://forums.unrealengine.com/t/whats-the-best-inventory-system-framework-best-practices/2679445)
**Author:** [@AllGamesSuck](https://forums.unrealengine.com/u/AllGamesSuck)\ **Replies:** 14\ **Last updated:** [October 20, 2026, 7:18pm UTC](https://forums.unrealengine.com/t/whats-the-best-inventory-system-framework-best-practices/2679445 "2026-10-20T19:18:12Z")
Hi, so how do you make a robust inventory system, taking into consideration saving? Assuming you’re using an array for the inventory, where do you put it, and what type is it? How, and where, do you store default item … --- ## [Replicate a UObject via Fast TArray Replication and getting the error “Attempted to send bunch exceeding max allowed size”](https://forums.unrealengine.com/t/replicate-a-uobject-via-fast-tarray-replication-and-getting-the-error-attempted-to-send-bunch-exceeding-max-allowed-size/2066569)
**Author:** [@hysecha](https://forums.unrealengine.com/u/hysecha)\ **Replies:** 2\ **Last updated:** [October 20, 2026, 7:15pm UTC](https://forums.unrealengine.com/t/replicate-a-uobject-via-fast-tarray-replication-and-getting-the-error-attempted-to-send-bunch-exceeding-max-allowed-size/2066569 "2026-10-20T19:15:11Z")
I am making a game in the survival genre. I created the items in the game as UObjects and created an inventory to hold them using FFastArraySerializer. (I used LyraStarterGame’s inventory system as a reference.) At fir… --- ## [How to replicate a UObject property inside a struct?](https://forums.unrealengine.com/t/how-to-replicate-a-uobject-property-inside-a-struct/245642)
**Author:** [@Alizia](https://forums.unrealengine.com/u/Alizia)\ **Replies:** 8\ **Last updated:** [October 20, 2026, 7:12pm UTC](https://forums.unrealengine.com/t/how-to-replicate-a-uobject-property-inside-a-struct/245642 "2026-10-20T19:12:39Z")
Hi ! I’m discovering how to replicate UObject contained in AActor (following this post Replicating UObjects: Building a Flexible Inventory System – James Baxter). My inventory system is a slot UObject contained in a USt… --- ## [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… --- ## [\[Replicating TArray of UObjects\] Cannot get TArray\ to replicate from within custom ActorComponent.](https://forums.unrealengine.com/t/replicating-tarray-of-uobjects-cannot-get-tarray-uitemobject-to-replicate-from-within-custom-actorcomponent/1262941)
**Author:** [@Jacob\_Odell](https://forums.unrealengine.com/u/Jacob_Odell)\ **Replies:** 7\ **Last updated:** [October 20, 2026, 7:07pm UTC](https://forums.unrealengine.com/t/replicating-tarray-of-uobjects-cannot-get-tarray-uitemobject-to-replicate-from-within-custom-actorcomponent/1262941 "2026-10-20T19:07:25Z")
Hello, I’m having an issue with getting a TArray of custom ItemObjects to replicate after the initial client load (it does when a client loads, but does not replicate after that). I am successfully adding ItemObjects to… --- ## [Replicated UObject subobject lifetime appears bound to the original UActorChannel that created it ](https://forums.unrealengine.com/t/replicated-uobject-subobject-lifetime-appears-bound-to-the-original-uactorchannel-that-created-it/2697164)
**Author:** [@anonymous-edc](https://forums.unrealengine.com/u/anonymous-edc)\ **Replies:** 5\ **Last updated:** [October 20, 2026, 6:39pm UTC](https://forums.unrealengine.com/t/replicated-uobject-subobject-lifetime-appears-bound-to-the-original-uactorchannel-that-created-it/2697164 "2026-10-20T18:39:55Z")
Hello! We’re implementing an inventory system where items are replicated UObjects (subobjects) and can be moved between different owning actors/inventories at runtime (e.g. container → player inventory → dropped body → a… --- ## [Rocket Racing vehicle plays a constant wind sound while driving on the ground (also in a blank project) ](https://forums.unrealengine.com/t/rocket-racing-vehicle-plays-a-constant-wind-sound-while-driving-on-the-ground-also-in-a-blank-project/2842978)
**Author:** [@euqueroFN](https://forums.unrealengine.com/u/euqueroFN)\ **Replies:** 0\ **Last updated:** [October 20, 2026, 6:09pm UTC](https://forums.unrealengine.com/t/rocket-racing-vehicle-plays-a-constant-wind-sound-while-driving-on-the-ground-also-in-a-blank-project/2842978 "2026-10-20T18:09:01Z")
A car from the Rocket Racing Vehicle Spawner plays a loud, constant wind/air rush sound while the player sits in it on the ground. The sound plays even when the car is standing still. It goes silent as soon as the car i… [Previous page](https://forums.unrealengine.com/c/development-discussion/programming-scripting/148.md?page=11) [Next page](https://forums.unrealengine.com/c/development-discussion/programming-scripting/148.md?page=13)