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 copy morphs from one SkeletalMesh to another in UE4?

I would like to enable modders to copy morphs from one SkeletalMesh to another. I wrote simple Python script to do that. The inspiration came from here. ...
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1answer
120 views

Multiple directx runtimes in game

I see by Process Explorer that many of Unreal Engine games load multiple DirectX runtimes. For example game Gears 5 in requirements has DirectX 12 only support, but uses DirectX 9 and 11 runtimes also....
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365 views

'CoreMinimal.h' file not found when building on Unreal Engine on Mac

I'm trying out C++ on Unreal Engine 4.25 on Mac. If relevant, my Xcode version is 12. When I try to compile, there's an error: 'CoreMinimal.h' file not found. I've ...
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1answer
1k views

Can I add extra widgets to a child widget in UMG-UE4?

I have a widget base class and I would like to reuse (logic and wigdets as well) it. I created an empty widget and set the parent class to the base class I would like to inherit from in the class ...
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1answer
129 views

Why does my game look different on my mobile device than in the editor?

I am new to Unreal Engine. My game in mobile looks totally different than in Unreal Engine editor. In Editor: In Mobile: Is this a symptom of something obvious? How can I make it so that what I'll see ...
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2answers
536 views

How do I control multiple Pawns without possesing them (RTS style)?

I am making a multiplayer RTS but I have a problem controlling spawned units (let's call them Vessels), specifically moving them around with AI MoveTo bp. Vessels ...
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350 views

Multiple planar reflections works weird in UE4

When I add multiple planar reflections for arch-viz, some of them on glasses don't have any result, but ones on mirror works properly. Sometimes all the planar reflections on glass are invalid. But ...
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1answer
73 views

Get NPC to look at player with only head

I'm wondering how to get an NPC to look at the player, I have tried everything. Find look at rotation changes depending on character rotation. Here is a fun drawing if letters are too complicated.
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0answers
19 views

How to create opacity mask from colored bitmap?

For the image (bitmap) below, if I do: Create a spite with the image in unreal engine. Create a opacity mask on the spite. Use this image, choose a specific color, such as blue, make its ...
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1answer
34 views

Utilize remote PC to Boost UE4 Editor Performance

As the title suggests, I would like to know how I can take advantage of a desktop PC at my workplace to help boost the performance of the editor on my laptop at home. General editor actions such as ...
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1answer
757 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 ...
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1answer
278 views

What's wrong with my planar reflection?

At some angle my mirror with planar reflection shows this result. Looks like it mix with the sphere reflection capture. How to fix it?
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2answers
2k views

Render hands and gun in front of everything

I'm currently learning about Unreal Engine 4 by making an FPS game. How can I render the player character's hands and gun on top of everything? Currently when I walk up to a wall, the hands and gun ...
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2answers
157 views

How to render thin glass with proper refraction?

I want to render thin bumpy glass with refraction. But it offsets too much(look at the black frame of the glass). Looks thick. How to do thin glass refraction properly? Or is it possible to exclude ...
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0answers
36 views

Any clue to create natural shadow like this?

I only use skylight with hdri map for overcast lighting. The corner isn't dark enough compare to other's work. Any clue to achieve this natural falloff soft shadow? What I want What I get My world ...
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0answers
56 views

Can I combine 2 UnrealEngine forks?

I am using Daz Gen 8 characters and clothes in my project. After I read this I decided to use a fork of UE4 which uses Dual Quaternion Skinning. Basically if you use Daz characters under UE4, they ...
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1answer
731 views

Can't build UE4 new mod kit - UGCExampleProject - UE4

I am trying to build the new mod kit to support modding for my new game. I am following the QuickStart Guide: Place your project in a directory under your UE4 root directory (such as /Games or /...
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2answers
82 views

Make my Character face the same way as my Camera as I rotate the camera

Before posting, I've already tried parenting the camera to the Character mesh head and setting controller yaw, that didn't work, in fact it invalidated my blueprint to set my Mouse X and Y for the ...
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155 views

Selecting components (only in editor) created in construction script

Question is about Unreal Engine 4 Is it possible to catch click (or other mouse) event on dynamically added component in editor? For example: I create 5 instances of StaticMeshComponent on ...
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113 views

Can I "unmerge" merged meshes UE4?

I set up my character to be modular, by following the UE4 docs. I used the code at the bottom of the page to implement mesh merging functionality. It does work well, I can merge meshes runtime. I use ...
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0answers
37 views

Unreal Engine custom camera

I was looking at game engines and found Unreal Engine. I want to make a game where the player has to create a camera by crafting it and can customize how many pixels the camera detects and what the ...
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0answers
135 views

Gaps in custom body parts export for Daz Genesis 8 character

I am trying to attach a custom mesh to a Daz Genesis 8 character, and export it into Unreal Engine. I use a custom script (namely: goldenpalace - NSFW); it exports both mesh and morphs... but it ...
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1answer
794 views

mesh gets twisted wildly when trying to use Unreal's mannequin's skeleton

I have modelled a simple mannequine and made a skeleton for it in Blender. As far as I can judge, this skeleton copies the Unreal's standard mannequine's skeleton perfectly... All the hierarchy and ...
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0answers
33 views

How can I allow player-created content to add morphs to Daz Genesis 8 characters(UE4)?

We use Daz Genesis 8 characters in our project. Content creators would load their morphs from Daz to our game. We would like to add these morphs to our characters so they can be modded, edited and ...
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55 views

Tank / turret animations

I don't know if this question is more of Blender / 3D or gamedev / Unreal question, but I decided to ask here first. What I want to do is make a character, simple robot. The bottom part rides around ...
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1answer
1k views

How to support importing .uasset files in game for content creators(UE4)?

I would like to support importing clothes(as SkeletalMeshes) and props(as StaticMeshes) as uasset files into game for content creators, which obviously have not been packaged with the game. Basically ...
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0answers
1k views

How do I fix these build errors in Unreal?

I am using this asset to do some IK magic in UE4. I connected some nodes to control the rig realtime. It works fine, I hooked up some dummy cube actor to control the limbs of the rig and that works ...
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0answers
58 views

How to find missing types of TArray-s of a script from Unreal docs? [duplicate]

I am trying to compile code from Unreal's official docs. Sadly, it just doesn't work out of the box. I noticed that the types params of all instances of the TArray variables are missing in the header, ...
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1answer
573 views

UE4 Blueprint Multiplayer Spawning Issue

I'm attempting to copy/modify the MultiplayerShootout project's multiplayer functionality for my own project. I'm running into issues when Player 2 joins a running session though. Finding it very hard ...
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0answers
47 views

Navmesh bound in ue4 topdown and third person template

The Topdown template has a navmesh volume to build walkable area, if remove that volume, the character will be unwalkable. However, the third person template has no such thing, but the character ...
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0answers
36 views

Overriden Event does not execute on Unreal

I've been learning Unreal Engine through this tutorial and I am having an issue with overriding an event I created on C++ using blueprints. So here is what I've done: I created a class called ...
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1answer
97 views

Assigning values on multiple clients in UE4

I am currently working on a multiplayer game and I am having difficulties on assigning values on variables for each clients. Originally I looped through available clients character from HUD then ...
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1answer
72 views

UE4 - custom template can only start with blueprints

I tried making a custom template for UE4 to help save some time during gamejams. I follow this tutorial: https://docs.unrealengine.com/en-US/Engine/Basics/Projects/CreatingTemplates/index.html It ...
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1answer
203 views

How to get Unreal find headers needed for my code to work?

I am trying to open a dialog to select files under UE4, using OpenFileDialog. I added this to my build.cs ...
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1answer
551 views

How to set C++ language standard for VS2019 in an Unreal project?

I am trying to a simple thing, just like that, in a header file; #include <filesystem> #include <iostream> namespace fs = std::filesystem; And ...
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2answers
208 views

Objects Imported from Blender to Unreal have really zoomed Materials

I've been learning how to use Blender for UE4. I just started figuring out how to define which sides should have materials on them. In particular, I wanted this building to have different materials ...
2
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1answer
1k views

change widget's size through blueprints

I want to change the size X of my 'Horizontal Box' widget's through blueprints but cannot figure out how to do that... the properties that I want to be able to control from blueprints are marked red ...
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1answer
192 views

UE4 bone sockets imported from blender have buggy local transform

I'm exporting this armature with two sockets for left and right hands. As you can see on the Transforms location and rotation are all 0s. Here's my export settings on blender: Now I import it into ...
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1answer
102 views

Blueprint script executed on tick but not on construction

Below, on event tick, I am initializing a map of images once, which works fine (remember we are in a graph for a widget blueprint here). Z Cursor Images is the map of the images. The keys in the map ...
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1answer
113 views

Need Help Figuring Out Damage Calculations for Diablo RPG Clone

I'm building a Diablo clone using Unreal Engine 4 and have been having trouble wrapping my head around how the combat calculations should work. I copied a lot of the core stats from the original ...
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1answer
474 views

Problems setting up and adding classes and compiling in UnrealEngine

I just installed UDK and Tried compiling a project in C++ at first it didn't compile I searched for it and it only said like "try again till it works" and I did then it worked "...
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0answers
498 views

References are missing after migrating Unreal assets

I'm currently trying to migrate some VFX assets (meshes, materials, textures, material instances, niagara emitters and niagara systems) to another project on another machine. My folder structure looks ...
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0answers
61 views

Using behavior tree with custom pawn and movement component

I am trying to have a custom APawn along with its custom UPawnMovementComponent and AIController, to move to a location using the MoveTo node of a behavior tree. I've followed the code in the engine ...
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0answers
34 views

How can I realistically simulate audio for multi-sensor processing?

I am performing audio simulations in Unreal Engine 4. Ideally, I need realistic audio propagations. So microphones at multiple locations will experience propagation delays related to their distance ...
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1answer
2k views

Cannot create a C++ Class on UE4

I'm new to UE4 (4.24 on Ubuntu 16.04) and I'm using AirSim and the Blocks world. Whenever I create a C++ class, I get the following message: "Successfully added class 'MyActor', however you must ...
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0answers
660 views

Unreal editor warns that Xcode is not installed on MacOS 10.14

I'm running MacOS 10.14.6. When I launch Unreal v4.25.0, I get the following warning: Xcode was not detected on this Mac. Metal shader compilation will fall back to runtime compiled text shaders, ...
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1answer
63 views

Creating a Pawn that simulates physics

I'm trying to make a Pawn that I can raycast against. Starting from the DefaultPawn object, I can't find a way to have a StaticMesh cube that simulates physics. My raycasting code works with Actors, ...
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1answer
196 views

UE4 - Cloth collision

How is collision working in UE4 Free Asset Paragon-Kallari? It seems like the body of the character and the cape is somehow colliding but I wasnt able to find any physics asset or any setting. Could ...
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2answers
139 views

Why is my texture spilling?

I'm trying to create a 3D Sword Slash VFX and created the model for the effect in blender. It's basically a wedge or ufo-shaped mesh. I proceeded to paint a simple test texture to see how it would ...
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1answer
94 views

Is there a way to setup a notification from Unreal Engine when it finishes packaging / building my game?

In Unity I was able to use a post build script to send myself an email when Unity finishes building a game. Is there a way to make a script run when Unreal Engine is done packaging a game? Or any ...

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