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Questions tagged [unreal-4]

Unreal Engine 4 is a professional suite of tools and technologies used for building high-quality games across a range of platforms.

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How to connect a UPhysicsConstraintComponent of an AActor to an FKSphylElem (capsule body) of a ragdoll?

I'm trying to connect an Actor's UPhysicsConstraintComponent to a capsule body of a ragdoll. The reason I do it this way, instead of just using sockets on the ...
formatc2013's user avatar
1 vote
1 answer
673 views

Add inertia to Pawn movement

I've just started to learn Unreal Engine 4.26.2 while developing an Atari Pong clone. This is how I have implemented the Paddle's movement (but this implementation doesn't accelerate or has inertia): <...
VansFannel's user avatar
0 votes
2 answers
423 views

How to set the hair_mesh to follow the animation?

How to set the hair mesh to follow the animation? I am trying this. ...
josil's user avatar
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2 votes
1 answer
2k views

How to pass parameters to a Blueprint function called from C++?

I have found this piece of code showing how to call a blueprint function from C++: ...
VansFannel's user avatar
2 votes
1 answer
381 views

Where do I have to put actions when the game state changes

I’ve just started to learn Unreal Engine implementing a clone version of Atari’s Pong game. I’m thinking about where to put the code to change the state of the game. I have an enum in the GameState ...
VansFannel's user avatar
1 vote
1 answer
8k views

How do I add custom data to a ListView widget in Unreal?

I have a UserWidget object with a ListView in it. How do I add objects add and custom data to them, such as names?
01F0's user avatar
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0 answers
1k views

PlaySoundAtLocation plays sound after some delay

I’m developing the Pong game to learn Unreal Engine 4.26 using C++. I use this code in the class’ constructor to load the sound: ...
VansFannel's user avatar
0 votes
1 answer
3k views

RunUAT Error: Automation was unable to run successfully (unreal engine 4.26.2)

I have completed my setup in Mac OS and configured all android dependencies like SDK, NDK, and JDK. but whenever I tried to package my project it shows an error I tried with a completed fresh project ...
Aakash Bhagat's user avatar
0 votes
1 answer
1k views

How can I add these bones to my meta human? Or is there a way I can make virtual bones count when retargetting?

Paid for animations thinking they would be fine and they mostly are but... the hands are using these IK bones that I do not have. Is there a way I can add the bones to my meta skeleton within unreal? ...
EdelweissPirate's user avatar
0 votes
2 answers
657 views

Read actor instance's text variable for widget when triggered on different objects

What I'm trying to do: (a 'long story version' is linked in comment below) (and another user example is hyperlinked in comment below - i couldn't post over 8 images and/or links in this first comment*)...
Stuart's user avatar
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2 votes
1 answer
2k views

Using UPawnMovementComponent to control a Pawn with Keyboard sharing code between Pawns

I've just started to learn Unreal and reading the tutorial Components and Collisions I have found that they use the UPawnMovementComponent to control their ...
VansFannel's user avatar
0 votes
1 answer
490 views

Why Query Only fires OnComponentHit? It supposes to fires only Overlap events

I've just started to develop with Unreal Engine 4.26.2 and I've been for five days trying to understand how collision works. I'm developing a Pong game, and I'm trying to make that the Ball bounces ...
VansFannel's user avatar
0 votes
1 answer
156 views

Would creating a player scriptable game using Unreal Engine or Unity violate their license agreement?

I want to create a game in Unity or UE4 which allows the user to write scripts in Python and run them mainly to control the AI. I will have to find a way to enable runtime script execution first. ...
spatial's user avatar
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1 vote
0 answers
216 views

Control rig sequence is not in UE4 menu

In the Unreal Engine docs, it is mentioned that, in order to create a Animation Sequence using the Control Rig, it is possible to create a ...
A.v's user avatar
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0 votes
0 answers
140 views

How to retrieve 3D models from a server in Unreal Engine 4

How can I load 3D models from a server in Unreal Engine?
Aakash Bhagat's user avatar
0 votes
1 answer
2k views

UE4 doesnt work with subfolders

I am trying to create a file structure for my code in c++classes/Myproject (in UE4 editor). I added a new class and in UE4s "Add C++ Class" dialog box I set the path for the created scripts ...
user169808's user avatar
1 vote
0 answers
77 views

Creating an external tool to edit Unreal project optimization settings

INTRO I am creating a C++ app that will help users to set up optimization settings in the Unreal game engine. I want to let the program make all this work on its own. This application is being written ...
Mykhailo Mushynskyi's user avatar
-1 votes
1 answer
185 views

Why is the Set new visibility doesn't resets the hair's skeletal mesh visibility to be visible?

The helmet is loaded when pressed a defined key and helmet is removed automatically by setting the remove on 2s delay. The Problem when the helmet is removed, the hairs visibility doesn't sets to be ...
Ali-Baba's user avatar
0 votes
0 answers
40 views

World border in World composition

A question. In World Composition there is such a border of the world. As I understand it, everything that goes beyond its limits is destroyed, but is there an option to evade it?
FAR747's user avatar
  • 101
0 votes
1 answer
88 views

Cannot create EAttachmentRule variable in a Blueprint struct

I'm trying to add a EAttachmentRule variable in a struct but the enum doesn't appear in the list of available types I managed to create a variable in a BP by dragging the pin from an ...
WirelessKiwi's user avatar
0 votes
1 answer
1k views

Unreal virtual function causing unresolved external error [closed]

I'm making a base gun cpp class that just has the stuff all the other guns will have. I have a virtual function called PullTrigger that doesn't do anything, I just want to have it on the base gun so ...
Millard's user avatar
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0 votes
2 answers
532 views

Unreal Crashing just by me adding components

I have created an actor cpp class called gun base. for some reason it is causing a perpetual crash in unreal. this is its header file. ...
Millard's user avatar
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1 vote
1 answer
933 views

How do I fix this "Accessed None trying to read property Save Game" error?

I have create this blueprint, with a Check for an existing Save-Game and load it in case of true. Else, create a new save game object. While Z is pressed, create a new Save Game, getting the Player ...
Francesco Morganti's user avatar
0 votes
0 answers
154 views

UE4 - Function is not being called

I've recently created a shuffle-type puzzle game for mobile (with Unreal Engine 4), where you, obviously, solve these puzzles. Since I didn't know how to do this puzzle mechanic in UE4, I went to UE4 -...
Kupachu's user avatar
0 votes
1 answer
355 views

Calling a function from Super is getting an error

I am following GameDev.tv's unreal C++ course, but I am getting an error that is causing my compiler to fail. I'm coding a player controller, and I think I followed all the steps right but when I ...
Millard's user avatar
  • 500
0 votes
1 answer
647 views

Use ramp and steps meshes as actual ramp in unreal engine 4.26

Is it possible to use a ramp mesh as an actual ramp in UE4? It seems that the system create a rectangle box around the ramp o the character does not climb the ramp, it is over it like on a box. I know ...
Eric Brochu's user avatar
0 votes
0 answers
139 views

Blocks / tiles aren't responding to clicks

I've recently finished a tutorial, UE4 Slide Puzzle by Nicholas Thompson. Halfway through the second tutorial, I found out that the blocks / tiles wouldn't respond to my clicks. For example, when I ...
Kupachu's user avatar
1 vote
0 answers
2k views

How can I generate mesh distance fields at runtime on a procedural mesh in unreal engine 4.26?

I am building a simulation game that and I that allows the player to create procedural buildings rather than placing static scenery items. If possible, I would like to write a shader that can take the ...
JronFrt's user avatar
  • 11
0 votes
1 answer
412 views

Why would I add components in code?

Watching a Unreal Course, and the instructor is creating a default pawn c++ class. He is adding all the components with code, but this seems really inefficient to me. Why can't you add components in ...
Millard's user avatar
  • 500
0 votes
1 answer
124 views

Are there any serious advantages for C++ compared to C? [closed]

so I know a little bit about C (read like a few university level textbooks on it, I am not an experienced programmer or anything) and now I would like to learn the ropes of the Unreal engine to fidle ...
papajo's user avatar
  • 101
0 votes
1 answer
321 views

Method to make character roam map isn't working

I'm an absolute beginner in Unreal Engine, so sorry for any strange mistakes, formatting, etc. I'm trying to make a game for a project where an enemy chases the player through a maze when it spots the ...
inky's user avatar
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0 votes
1 answer
4k views

How to enable treat warnings as errors in Unreal Engine 4.24?

I've had little luck googling and it takes about an hour to build the engine (which I have to do if I'm to test if it works), so guessing is a bit time consuming. I've seen advice to add the ...
Karlovsky120's user avatar
0 votes
1 answer
637 views

Unsure where to right click to delete Unreal C++ class

Trying to delete a c++ class (this should not be this difficult!) and I have deleted the .h, .cpp, and binaries. Next everybody says "now, right click on your .uproject file and select Generate ...
Millard's user avatar
  • 500
0 votes
0 answers
421 views

What does rebuilding the .vcxproj file do?

I'm having the same problem this user had. The solution is confusing me, because all I want to do is comment out the code I added that caused the compiler crash, get Unreal to accept it and stop ...
Millard's user avatar
  • 500
0 votes
1 answer
2k views

Unable to create a blueprint containing multiple actors

I'm having some trouble in Unreal 4.23. According to the documentation, if I select a bunch of Actors and hit the Blueprints button in the toolbar, I should get an option to "Convert Selection To ...
Mason Wheeler's user avatar
1 vote
0 answers
278 views

Unreal Visual Studio 2019 taking forever for tellisense

I'm using the latest unreal engine and visual studio 2019. I'm having a problem where intellisense can take way too long. This usually happens when I have just opened the project inf VS 2019, but ...
Millard's user avatar
  • 500
1 vote
2 answers
5k views

Is there a way to reimport an asset with new import options?

I'm trying to help out a friend with an Unreal issue. He has a character model that's been imported and used in a map. A bunch of work has already gone into setting up the scene before anyone ...
Mason Wheeler's user avatar
0 votes
1 answer
1k views

How to use X,Y, and Z instead of Pitch, Roll and Yaw

I'm learning Unreal engine, and I'm rather disappointed because it uses pitch roll and yaw instead of the standard x, y, and z that I'm used to. Is there any way to convert this easily, or is there a ...
Millard's user avatar
  • 500
1 vote
1 answer
328 views

Unreal Engine 4 - Error in Macro Syntax Causes Build to Hang

Problem Errors in macro syntax causes the module's build to hang for 2+ hours (possibly, indefinitely) with no indication of a build error. Steps to Reproduce Create a template game project in the ...
hulkmeister's user avatar
0 votes
1 answer
812 views

Visual Studio not adding the header file to the Solution explorer

I'm having trouble with my Unreal Visual Studio 2019 project. I created a new header file, and saved it in the same folder my other ones are in. (I didn't add these, they were in the starter project ...
Millard's user avatar
  • 500
3 votes
1 answer
2k views

What exactly is different between a string and an FString in Unreal C++?

Sorry, maybe a noob question, I did a quick google search and couldn't find what I was looking for. I have two related questions about FString. Does regular C++ Have this, or is this an Unreal term. ...
Millard's user avatar
  • 500
0 votes
1 answer
712 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 ...
Wolfizzy's user avatar
  • 103
0 votes
1 answer
48 views

UE 4.25 - Can't create EQS assets

Like the title says I am unable to create EQS assets. I am running 4.25 and there is no option in the BT details panel, nor under "Add assets -> AI". AND there is no option to activate it....
sergej amnesia's user avatar
0 votes
0 answers
2k views

FBX Import Errors: "Multiple roots are found in the bone hierarchy"

I followed these steps: I exported my character from Blender as an fbx file I went to Unreal Engine and make a new folder I paste the fbx file in that folder I put and tried to put it with a ...
Crockadile Hunter's user avatar
3 votes
0 answers
2k views

Unreal Engine 4.25.4 - CreateDefaultSubobject inside a child component attached to an actor loses values in blueprint editor

I have the following actor: ...
Jimmyt1988's user avatar
2 votes
1 answer
1k views

How to manually render with a given camera in Unreal Engine 4?

I would like to render with any camera at any given time for a Portal clone project. There's a USceneCaptureComponent2D but it renders the whole scene to a texture. ...
Daniel Marques's user avatar
1 vote
0 answers
329 views

How to make Unreal save assets in 3-file style?

I'm trying to play around with some code to explore UE4 maps, but it assumes that every file is actually multiple files, with the asset accompanied by a .uexp file ...
Mason Wheeler's user avatar
1 vote
1 answer
458 views

UE4 - Event Tick and getting Forward Vector

I'm trying to make a game where my character rotates towards cursor (that works). He can choose between a few weapons (also works). One of the weapons works like a machine gun. My idea was to make a ...
lilKriT's user avatar
  • 426
1 vote
0 answers
431 views

Skeleton bone in incorrect spot in-game yet, blender rig, skeleton mesh and physics asset are all correct and behave properly

I've made a custom character and rigged it in blender. Then exported/imported into ue4. It behaves properly in the PHAT and the skeleton mesh looks fine and it all behaves properly in the simulations. ...
thissiteistoxic's user avatar
0 votes
0 answers
201 views

Unreal4, C++: Spawned actors visible after stopping, not during play

I've created a class with a function InitializeModel, that is exposed to blueprint. In this function some AStaticMeshActors should be spawned, but I cannot see them during play, I need to stop the ...
Kowalski Paweł's user avatar

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