Questions tagged [unreal]

The Unreal Engine. Not to be confused with the free UDK.

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Destroy multiple actors by pressing a button

I'm making a simple project to learn Unreal Engine. I have 50 actors (blueprints) and at the start a function will loop 5 times and spawn 5 of the 50 actors randomly. How can I destroy the actors by ...
1 vote
1 answer
1k views

How to draw the editor's camera position in play mode Unreal?

The blue camera that is drawn for the CameraComponent in the editor. My intended usage is that when playing a third person template, ejecting from the pawn and then selecting it, will show the Camera ...
1 vote
1 answer
57 views

How to calculate screen space UV coordinates from a specific camera

In Unreal Engine 4.27 I am currently trying to create a material (shader) that maps a texture onto a quad using the screen space coordinates from a specific camera. If I am using the current active ...
1 vote
1 answer
8k views

How to make my animation play once?

In 3ds max, I've made a Cannon that sets itself up, but I only want this animation to play once, here's where I'm trying to make it loop only once: When I click the toggle at the bottom, it stops the ...
0 votes
1 answer
14 views

Using CommonUI Plugin in Unreal Engine5 does not show any option in PlatformInput

As shown in the following screenshot, the menu Platform Input does not show any information and does not allow any customization. Following the steps in this video the options are necessary to ...
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0 answers
12 views

UProperty of AStaticMeshActor type resets to "None" after picking in Editor

I have an C++ class “Manager” that derivatives from AActor. Inside of it, I have a property of type AStaticMeshActor: ...
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0 answers
26 views

Unreal HLSL semantics

We have some HLSL shader code that uses the predefined shader semantics TEXCOORDX to map input streams. We now want to support Unreal as rendering back-end and see ...
0 votes
1 answer
45 views

Invalid maximum heap size: -XX:MaxHeapSize=4096m

I am trying to package android project in UE4.27. And getting this I tried changing environment variable _JAVA_OPTIONS: -Xmx512M -Xms512M not worked. Where can I change MaxHeapSize, please tell me ...
1 vote
1 answer
3k views

How to increase vertical Nav Mesh detection for AI Actors? Using Default Query Extent?

For my swimming AI, I wish to use a Nav Mesh, so they may avoid obstacles and swim up and down - preferably. I figured I should try to solve this with a nav mesh, since UE4 has kindly implemented it ...
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0 answers
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Whenever I move the camera on the left side of the screen, the cursor appears in-game

The mouse keeps escaping the full-screen whenever I either jump, move, rotate the camera or keep spinning to the left. But only on the left side of the screen, not the right, not the middle, not ...
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0 answers
31 views

Can’t load game correctly

I have Save/Load functionality where I use LoadGameFromSlot, SaveGameToSlot and SaveGame ...
2 votes
0 answers
47 views

Object reshaped by morph target retains shading from its original shape

I created an asset with a morph target in Blender. I captured GIFs of manipulating morph targets from 0 to 1 in both applications. When the morph target is 0, the mesh is serrated. It is correct to ...
0 votes
1 answer
67 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 ...
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0 answers
75 views

DataSmith missing from UE5 even after installation

I have UE5 and I’ve seletected Datasmith Importer plugin in Edit → Plugins, then restarted the UE5. I cannot see Datasmith import button in IDE and when I try to drag-and-drop datasmith file into ...
2 votes
2 answers
2k views

Component instance reference in Unreal Engine 4

I'm creating a C++ script and I want to get a reference to a component instance. For example, imagine that I want to get the player camera, which is a ...
0 votes
1 answer
61 views

Where should I design skeletons and animations?

I have just finished a course on Unreal Engine 5, where I have been introduced to managing animations through skeletons and different meshes. My question is, where should I design such animations? Are ...
0 votes
1 answer
330 views

How to get image component from blueprint in c++

I have a dialog screenwith character icon and I need to be able to set up this image in code. But I don't know how to access this Image component (I put material instances in it). .h ...
0 votes
1 answer
818 views

Map with media texture not packaging

I have a simple map with a Big-sphere and a pawn inside it. I use media texture and media player to play 360 video on it. But when I try to package it for windows-64 it fails while it tries to cook ...
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0 answers
21 views

How can I send back data from one actor to another?

I have a UE4 project and I can't find a way to send data from one actor to another. I have a piston that snaps into an engine block. The piston then spawns 2 screws that need to be screwed in. The ...
0 votes
1 answer
133 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 ...
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0 answers
20 views

How can I ignore specific bones in Unreal Engine 5 retargeter?

Unreal Engine Version Version: 5.0.2-20280985+++UE5+Release-5.0 My goal is to retarget Xsens motion capture to a clo3D rig. The problem is the clo3D rig has an extra bone in the upper arm and upper ...
0 votes
1 answer
189 views

Multiplayer Replication Unreal Engine 4

I have variable=count(integer) in a Character Blueprint. I want to increment the variable when user presses the 'R' key. What do I so in the Blueprint that ...
0 votes
1 answer
582 views

Can't connect to Steam using Blueprints in UE4.25

I'm following this tutorial by Unreal Engine itself, but I don't have a Steam overlay popup like I'm supposed to, (according to the tutorial.) And actually a lot of people have a similar issues like ...
0 votes
0 answers
22 views

Unreal Engine Scale Ground Material Into A Pattern Instead of One Big Overlay

I bought a ground texture and I'm trying to apply it to the landscape in an Unreal Project. When I apply the ground texture it looks like this: The landscape is really large so I'm assuming the ...
1 vote
0 answers
32 views

Unreal Engine Can't Rotate Material

I am a Blender artist and Unity Developer. I'm very familiar with materials and texture maps in Blender and I'm only moderately familiar with texture maps in Unity. My workflow is to do all of my ...
0 votes
1 answer
24 views

Traversing distance over time in Blueprint graph

I am trying to make a set of simplified physics blueprints, very simplified, as an exercise. I am keeping track of the position of an object and I would like to divide the distance it travels each ...
0 votes
1 answer
205 views

Why do my axis mappings to remap the MoveForward and MoveRight keys not seem to have any effect in-game on Unreal Editor 4.27.2?

Since I have an azerty keyboard instead of a qwerty one I'm trying to remap wasd to zqsd for the in-game playing in Unreal Editor 4.27.2. I've started a new blank c++ project with starter content. ...
1 vote
1 answer
152 views

What does the 'step' node do in Unreal Engine?

In this youtube tutorial the instructor is using the step node as opposed to the power node to make the contrast of the image higher. I'm looking for documentation on what the 'step' node does to ...
0 votes
1 answer
373 views

Create and configure new Niagara Emitters from C++

I’m trying to create a magic system that lets the player add spells and modifiers to a spell stack and combine them following a set of rules, creating new spells in the process (that maybe can be ...
0 votes
1 answer
392 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 ...
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39 views

How to texture seams between walls on large building

I guess a modular approach can be used in modelling, but I don't really understand how to texture those seams between walls, so they are not repetitive looking.
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1 answer
485 views

Unreal Engine 4 AI Character Pawn Entirely Unresponsive to Movement Commands

I'm new to game development and to Unreal but I cannot for the life of me get my AI character pawn to move at all using any method I know. I'm developing a 2d Sidescroller game using a Tilemap. I have ...
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0 answers
68 views

Slow Startup of UE5 Editor on Ubuntu

Starting Unreal Engine 5 editor on Ubuntu 20.04 takes 3 mins 10 seconds on my computer. Nvidia drivers are on v470.129.06. UE5 is built from source tagged ...
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2 answers
513 views

Getting cameras from World to set up a static camera only game

I'm trying to use ACharacter for my characters, but the game uses ONLY static cameras (ie. they shouldn't even logically be attached to the mesh of the characters). ...
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0 answers
71 views

Unreal Engine: UNavigationSystemV1::ProjectPointToNavigation is not working in editor, always returns false

I'm trying to find the closest point on navmesh in the editor. The Navigation is built but this method is always returns false with any extent. Also, UNavigationSystemV1::GetMainNavData() is always ...
0 votes
1 answer
14 views

UDK: BSP from Brush-CSG Add cannot be deleted

Once a BSP has been created using Brush-CSG add it cannot be deleted. Del-DELETE from the keyboard yields no effect. Right click-cut yields no effect. Is there another way?
0 votes
1 answer
465 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?
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0 answers
69 views

Procedural terrain generation blueprint is generating a strip instead of a square

I want to procedurally generate a map for the world, I created a blueprint, and then launched it, but instead of a square, this turned out: How to fix it? I uploaded my project here (Google Drive). ...
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0 answers
43 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?
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0 answers
74 views

In Unreal Engine, how do I rotate an actor in-place along an arbitrary axis?

Consider the following cube actor. How do I rotate it in-place along the axis specified by the vector v? My use case for this is in the UI, the player would be ablet to rotate an object using the ...
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0 answers
92 views

Unreal Engine 5 foliage paint not working

I just learned unreal engine 5 and right now is trying the foliage paint. So I'm having difficulty of making the foliage paint to work, here is the video: https://youtu.be/oWrE8-JBdOo as you can see, ...
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0 answers
105 views

Unreal Engine Raytraced Translucency Shadows

Unreal Engine 5 I'm getting really dark shadows in my glass texture with raytraced translucency enabled. If you need more info such as settings, let me know - but I'm hoping it's a common enough ...
0 votes
1 answer
627 views

How to apply saturn's ring texture in Unreal Engine 4?

I'm working on a "solar system" model project. And while trying to apply saturn's ring texture which is this one : it ended up looking like this: I'm new to UE4 and this branch in general. So I ...
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0 answers
24 views

Virtual Camera with Collision

I am using a VirtualCamera2 Actor for recording sequences using iOS devices + Xbox Controller as input devices. Everything works well except for collision. I tried to add it in many ways but it doesn'...
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0 answers
70 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 ...
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1 answer
259 views

Why does iOS packaging fail when I activate Apple ARKit plugins in Unreal Engine?

Steps, Using Unreal Engine 4.21.2 1 - I created new Third Person game from the Unreal Engine template and named it FaceARSample 2 - I imported a skeletal mesh with blend shapes 3 - I added this to ...
-2 votes
1 answer
110 views

How to change skeletal mesh with multiple .uc files in runtime

My plan for this is kind of complicated. I want to create a world where you can find things and place them around the map. But I don't want it to be too complicated. If my character had the ability to ...
0 votes
1 answer
129 views

Get BP FollowCamera Rotation and Location

I'm accessing my FollowCamera https://imgur.com/a/vbFagxg from my BluePrintCharacter class in my C++ code, with this following line : ...
1 vote
1 answer
56 views

Can you use common Datastructures in UE?

I just saw that you normally use Unreal engines own data structures when you code scripts. Why is this are those better ? Can you also use the common c++ datastructures ( vector... ) or are you forced ...
1 vote
0 answers
96 views

Strange lighting/shadows in Unreal Engine game (shadow suddenly gets darker or lighter)

As the title suggests. I have made a level for Unreal Engine. It uses RectLights in the ceiling without any directional lighting. There is a Lightmass Importance ...

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