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14 votes
1 answer
9k views

How does Unreal Engine 5's Nanite work?

I have seen Unreal Engine 5 showcasing their Nanite system a long time ago. Like everyone, I was impressed. Since this is something that would revolutionize the gaming industry, I expected it to come ...
silver takana's user avatar
3 votes
0 answers
180 views

What does SetGamePaused do internally?

I would like to implement changing game speed similar to RTS games (pause, 1x, 2x, 4x). For the faster times I can set bigger Time Dilation but for 0x time I would like to know if I can just use ...
Kostej's user avatar
  • 43
2 votes
1 answer
4k views

Triggering Enhanced Input Actions via inputs with modifier keys (Shift/Alt/Ctrl) in UE5

This question refers to the use of enhanced input in Unreal Engine 5. Whenever I say "modifier", I refer to modifier keys such as Shift, Alt, and Ctrl (rather than the Input Modifers such as ...
Simon Fischer's user avatar
2 votes
1 answer
1k views

Variable "is not blueprint visible" in function library

I am trying to create a function that simply returns some hardcoded values so that I can use them in other functions within the function library. However, I'm getting the error: ...
Matt's user avatar
  • 375
2 votes
2 answers
122 views

How to record high quality footage for a game trailer?

I'm trying to record a trailer for my game using OBS, but the recordings are coming out in very poor quality. I've tried increasing the video bitrate, but that just makes the game lag during recording....
IDREES AZIZ's user avatar
2 votes
3 answers
5k views

BlueprintCallable functions not appearing in Blueprint - UE5

Only just started working with Unreal Engine 5 and I have an issue were my BlueprintCallable functions are not appearing/callable in the blueprint. I dont have the same issue with Unreal Engine 4. ...
LavsTo's user avatar
  • 51
2 votes
1 answer
335 views

Porting Plugins from UE5.0 to UE5.1 source build causes DLL Registration Errors

I built UE5.1-Main from source successfully. I'm trying to port my UE5 marketplace plugins, but when I launch the editor I get these errors for all my ported plugins. I suspect it might have something ...
Tyler's user avatar
  • 123
2 votes
1 answer
1k views

Can UE5's Nanite be applied to the low poly aesthetic?

It sounds like a bit of a stupid question; why would anyone want technology for triangle-per-pixel rendering in a low poly aesthetic game? The answer is that Nanite offers continuous LOD with high ...
smallobsession's user avatar
2 votes
0 answers
125 views

How can I write a fold expression in Unreal 5?

I'm trying to write a variadic function template that would fold a parameter pack over an expression in UE5. However, the compiler fails on the fold expression. Since my function is a little complex, ...
MetaZenithian's user avatar
1 vote
1 answer
201 views

Can I upgrade Unreal 4.27 to 5?

I tried to get Unreal 5 directly but I couldn't, the only option on the table was unreal 4.27, can I upgrade to 5 after 4.27 or do I need to consume another 20 gigs for 5?
KiynL's user avatar
  • 111
1 vote
1 answer
62 views

How do I apply a post process animation blueprint to a skeleton?

I tried to migrate the rifle anims from the lyra sample project. I am using the same skeleton as the Lyra project, but the wrist is twisted once they are retargeted. If I open the anim before ...
TechnicalVoid's user avatar
1 vote
1 answer
414 views

Best practice for Actor Components that require other Actor Component functionality

I struggle to understand best practices regarding composition and inheritance for Actor Components in Unreal Engine 5. Concretely, I want to build a base class, say ...
Simon Fischer's user avatar
1 vote
1 answer
334 views

Stuck trying to build UE for iOS on Mac

I am trying to build an AR game for iOS, using a custom build of Unreal Engine 5.1.1, on an Apple Silicon (M1 Max) Macbook Pro. (I have to use a custom branch of UE5 because there is a problem with ...
d0g's user avatar
  • 111
1 vote
1 answer
2k views

Trouble adding C++ actor component to blueprint in Unreal 5

I'm a veteran C++ dev, but so far I've only been working with blueprints in Unreal. I'm now attempting to mix the two. I have a blueprint actor I'd like to attach a component to, but the actor ...
Nightmare Games's user avatar
1 vote
1 answer
1k views

StaticMeshActors not Multiplayer Replicated in Unreal 5

I'm attempting to add multiplayer support to a new first person game we're working on in Unreal 5. Starting with the FPS template, it seems like the player and the gun both behave as expected across ...
Nightmare Games's user avatar
1 vote
1 answer
129 views

Trying to package an Unreal project for Windows but it builds the default demo fps map?

This is really frustrating but I made a complicated Unreal Engine level and it built the default FPS project. It didn't build a single asset in my scene. I would build the project by clicking ...
ChristianOConnor's user avatar
1 vote
1 answer
447 views

Where to Save Health on Character with Behavior Tree - UE5

I've looked but havn't been able to find a the workflow for this searching online. I have an NPC, with a behavior tree. Right now it just moves around the map. It's supposed to have a health variable, ...
Candle's user avatar
  • 141
1 vote
1 answer
50 views

Limited git provider and large assets

I am facing a problem with my UE5 project: I am hitting the maximum amount of space my current account allows for git, including LFS. Some assets are very large, so I cannot use anymore my git ...
senseiwa's user avatar
  • 111
1 vote
1 answer
61 views

I want to change the direction of my platform from z direction to y direction alternatively

So basically, I want my platform to move first on the z axis from start position to end position, and then from ...
Ken's user avatar
  • 13
1 vote
3 answers
592 views

How to send an HTTP Request from an Unreal Blueprint?

I'm updating a little telemetry-logging blueprint that uses HTTP requests to log game events to a server. In the past, I've used the Fetch plugin for this, though it's currently listed as "Not ...
LudoProf's user avatar
  • 324
1 vote
0 answers
68 views

What does a "non viable function" error mean?

I am trying to use a websocket and some C++ code in order to trigger a function toogleLight every time Unreal connects with a server. But I have the following error:...
Nicolas Osorio Bustos's user avatar
1 vote
0 answers
69 views

How to use the DirectoryWatcher module in an Unreal Engine packaged build

I'm using the IDirectoryWatcher module on my project to monitor changes on a directory and when packaging it, I ran into a number of issues. Attempt 1: If I simply add the ...
afarre's user avatar
  • 111
1 vote
0 answers
70 views

Which part of UnLua for UE5 can be defined at runtime?

I'm looking into options to allow a released UE5 game to be modded, with just "text files". That is, without having to use the Unreal Editor, and give access to the game code, to create the ...
Sebastien Diot's user avatar
1 vote
0 answers
51 views

How to blend 2 different metahumans seemlessly during animation

I'm new on this site so please let me know if this is the wrong section to post to. I have an idea for a whole bunch of animations revolving around 2 semi-identical twins that live in the same body. I ...
Majd Odeh's user avatar
  • 111
1 vote
0 answers
105 views

How to animate multiple animation blueprints offseting time for each instance?

I'm new to Unreal Engine and would like to get an effect similar to this one: The idea is to have an Animation BluePrint with data from a Live Link Pose node to start with. To achieve the effect, my ...
George Profenza's user avatar
1 vote
0 answers
579 views

Issue Joining a Session Created Through EOS in Unreal Engine 5

I'm trying to build a Peer-2-Peer multiplayer game using EOS (Epic Online Services) Online Subsystem in Unreal Engine 5.1.1. The Setup: I configured my organization (product, application, client, ...
Elias Marrero's user avatar
1 vote
0 answers
29 views

Execute both exec ports in the same frame

I made the following: Notice the [Button] node has two execute ports. The CLICKED exec port is executed when a button is clicked. The other exec port is supposed ...
clankill3r's user avatar
1 vote
0 answers
349 views

How to add oblique frustum (lens shift) to UE5 camera?

I want to make a game with an oblique frustum instead of a standard frustum. Unity camera has lens shift option for an oblique frustum. But UE5 does not have such thing. In this Unity document, I can ...
landings's user avatar
  • 111
1 vote
0 answers
331 views

Unreal 5 and Maya 2020 not matching scale despite both defaulting to centimeters

Effectively 100 units in Maya set in centimeters = 1 unit in Unreal Engine set to centimeters I've been in a school project last year and am about to embark on another on UE5, and I'd like to find out ...
VegetableStu's user avatar
1 vote
0 answers
125 views

Clothing mesh penetrates character when imported into Unreal

I'm trying to import a .fbx file with animation from Maya, but the mesh has changed at some specific frames automatically, which makes my character intersect with the cloth. The mesh itself does not ...
EdwardW's user avatar
  • 11
1 vote
0 answers
165 views

What are the limitations or downsides of using Procedural Textures extensively?

Are there negative consequences to making heavy use of 'procedurally generated textures' in Unreal Engine 5, as opposed to normal textures? I found some info in the docs that it 'saves memory', but ...
Candle's user avatar
  • 141
0 votes
2 answers
109 views

Can I contribute code to an Unreal game without running the engine on my system?

I want to get into game programming, but my system can't run Unreal Engine. Another programmer I'm working with is using Unreal on his system, so I want to know if it's possible for me to code using ...
Aki Toby's user avatar
0 votes
1 answer
179 views

Imported IK Rigged FBX model into Unreal Engine makes the feet point in the wrong direction

Hi I have a model I rigged in Cinema 4d following the same structure as the UE5 mannequin that I've imported into UE. I am trying to setup retargeting however the animations have the feet pointing in ...
730wavy's user avatar
  • 101
0 votes
1 answer
365 views

Template projects missing after updating to Unreal Engine 5.0.3

I just recently upgraded to Unreal Engine 5.0.3 and I cannot find different templates on the start window: Previously there were many templates, like for a third person project, top-down, hand held ...
mleu's user avatar
  • 13
0 votes
1 answer
2k views

Unreal Engine 5 does not use shared VRAM

I have a HP Pavilion laptop with an integrated Intel Iris GPU, as well as a dedicated Nvidia Geforce MX 450. The Nvidia has a dedicated 2 GB VRAM, and the the two cards share an additional 16 GB of ...
Igor Trujnara's user avatar
0 votes
1 answer
142 views

Metaverse Game - Scam?

I hope you can help me. I have invested in a metaverse game project which claims that 5 people are working full time on the project for 2 years already. Unfortunately in the last couple of days one ...
VoOu's user avatar
  • 1
0 votes
1 answer
177 views

What is the best way to handle removing elements from an array while iterating through it in Unreal Engine Blueprint?

I'm trying to remove "Park" Area Controls from a Scene Actions array in Unreal Engine Blueprint. My current attempt doesn't work, and I'd appreciate help troubleshooting it. Details: I have ...
User_4373's user avatar
  • 101
0 votes
1 answer
115 views

UE5 - Add texture to landscape

I created a terrain in gaea and exported it to UE5. Then I created a new material with this texture which is for my whole landscape: Material settings: The preview above is already looking good. But ...
Black's user avatar
  • 621
0 votes
1 answer
323 views

Using Unreal Engine 5 PCG graph to spawn terrain altering blueprint actors causing loop

I am using a PCG graph to spawn in actors, which are blueprint stamps for the terrain height map. I believe the issue I am facing is that when the blueprints are spawned, they alter the terrain, which ...
Sudoadmin's user avatar
0 votes
1 answer
95 views

Static Niagara System for fire on a torch

I'm building a Niagara System for fire and smoke that would be placed on a torch when it's lit. While smoke works just fine when it's static, when I move the camera (and so the torch itself moves too) ...
user3272018's user avatar
0 votes
2 answers
2k views

error creating a c++ project in unreal

I was working on some test project since I'm beginner in unreal engine, and I suddenly started getting this: ...
mleu's user avatar
  • 13
0 votes
2 answers
1k views

BeginPlay and Tick do not work for blueprint class inherited from C++ class

The problem is that the begin play and tick functions do not work in a blueprint inherited from a C++ class. If the blueprint does not inherit from a C++ class, then the functions work perfectly. ...
OMEGA's user avatar
  • 11
0 votes
1 answer
91 views

Mysterious light source

In 5.0.3, I removed all light objects from the project, including the skylight and any/all lightbulbs. Yet, there are two spots of light in my model, one on the floor and one on a wall. What might be ...
Eight Rice's user avatar
0 votes
1 answer
251 views

How do I accomplish viewing a 2D game board in 3D space?

So I'm making a 2D board game in 3D space and I don't want to use paper2D because I'm not really using sprites. What I want is to be able to make a grid of cubes positioned such that I can have a ...
Josh Sanders's user avatar
0 votes
1 answer
572 views

Make Spherical Hole on objects in Unreal Engine 5

I want to make something like this rasengan effect on a tree for my game (just for learning). Full Video Domonstration Link here (length: 1 min) I am new to unreal engine. So, according to my ...
Back2Lobby's user avatar
0 votes
1 answer
702 views

How do I get a directional light's (e.g. Sun's) Y axis position in a UI Widget in Unreal Engine?

I have a UI widget that will be tracking the in-game position of the sun (bottom left corner). When I try to get the sun's position, it can't find the sun actor even though (I think) I have a ...
bynary's user avatar
  • 103
0 votes
1 answer
1k views

Level Instance Blueprint Option Hidden UE5

So, here’s the deal. I’m trying to make level instance blueprints with Megascan assets (i.e. group them and convert to a single blueprint), but when I select them all and right-click, I can’t find the ...
BlenderMaster15's user avatar
0 votes
1 answer
829 views

How do I work with Runtime Virtual Textures in UE5?

I just created a Runtime Virtual Texture, but when I double click to edit it, I get no options at all. How can I reach the options and work with it, what am I missing here?
max pleaner's user avatar
0 votes
0 answers
10 views

Can't access to widget second time

I have a AScoreboardWidget ScoreboardWidget.h ...
EzioMercer's user avatar
0 votes
0 answers
16 views

What difference does it make when to update the position of a component?

I'm trying to update the position of one of background parts. The goal is to move the most left background part to the right side of most right background part when it reach the some point (in my case ...
EzioMercer's user avatar