Questions tagged [unreal]

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

0
votes
0answers
17 views

How to spawn objects and control the content in each spawn

I'm using unreal engine and would like to spawn multiple actors and control the text in each spawned actor. How can this be achieved in unreal engine?
0
votes
1answer
56 views

Unreal 4 why does reducing scalability take so long to compile?

I have almost nothing in my scene--in fact, I reduced my scalability settings from "High" to "Medium" before even loading my level layout--and doing this has crashed the program multiple times. It ...
1
vote
1answer
27 views

How to use alpha channel with emission?

I am trying to assemble scene assets and one asset needs an emission material where only the white part emits light: I set up a texture with a simple (air-quotes) "mask" for the window... ...and ...
2
votes
1answer
94 views

Are unity games as performant as Unreal's? [closed]

TLDR: I make both RPG and MMORPG, 3D, heavy games with big landscape. Both engines are very good, but which one produces games with more FPS assuming the quality was the same? I've been using ...
0
votes
0answers
37 views

Smooth network movement lunge (UE4)

I am working on a melee in Unreal Engine 4 that lunges towards an enemy until it reaches it and applies damage. I have tried various approaches to get the movement looking smooth on the local client. ...
1
vote
2answers
59 views

Static Camera on Endless Runner

I am developing a mobile game in ue4. For this project, I need to have a "static" camera so that the player can move within the frame not affecting camera location and rotation. But as this is an ...
0
votes
1answer
27 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 ...
0
votes
2answers
35 views

How can I edit collisions in Unreal Engine?

I made a concave house model. When I import it to Unreal Engine it generates a simple box collision that covers the full mesh. I need a collision that only covers the walls. How can I generate one or ...
0
votes
1answer
44 views

ue4 - create a instance of a c++ class within a blueprint

i'd like to create a instance of a c++ written class in a blueprint. that's my current approach, but the instance is 'None'. any advices? =)
0
votes
1answer
174 views

How to setup input for local multiplayer without split-screen in Unreal Engine 4

To bind actions and axes in the character blueprint class, I may have multiple such character instances for each new APlayerController. Merely 1 Action Name (e.g. avoiding ...
0
votes
0answers
18 views

Incorrect shading after building light

Whenever I build light in Unreal, the light doesn't seem to reflect off of objects correctly. This seems to happen with basically anything I import into the engine (I use Blender for all my meshes) [...
0
votes
0answers
105 views

how to make AI do jump on navigation mesh system?

hi :D i'm currently using unreal for make a sand-box game for learning purpose. and due to the unique attribute of sand-box game, i am looking for how AI move naturally on map (which changes so often)...
4
votes
1answer
132 views

Linking Unreal Engine with OpenCV libraries built with RTTI on Linux

Unreal Engine has a plugin for integrating with OpenCV. Currently that plugin works on Windows. I'm trying to modify this plugin to work on Linux. I've worked through many issues but I have one I can'...
1
vote
1answer
291 views

Convert global 3d coordinate system to a local one with specific direction

Imagine a (x,y,z) coordinate system within a solar system, with (0,0,0) beeing the center of sun where Z axis goes thru both solar poles. I'm standing on a planet inside a house within that solar ...
0
votes
0answers
93 views

Using DualShock 4 motion sensor in Unreal engine (windows)

Anyone know how to access the gyro/accelerometer values from a DualShock 4 controller in the Unreal engine (under windows)? Are there any plugins that do this? Does raw input work?
1
vote
1answer
81 views

Lighting in Unreal is not fluid, lighting changes drastically at object “borders”?

I used the starter content's wall objects, an atmospheric fog, a directional light and this is the result: As you can see, it's obvious where the new object starts. Why?
0
votes
1answer
97 views

Manipulating time in Unreal messes up Physics simulation?

I'm trying to achive a Super Hot like gameplay, where the time only flows when the player moves. But when I stop time, then restart it, physics simulation will be messed up. Like: Cloths starts ...
0
votes
2answers
149 views

Multiple errors on brand new C++ project

I've just started a brand new project and created a created a new C++ Character class. However Visual Studio 2017 shows 140 errors. The project still builds fine, however the syntax highlighting and ...
0
votes
0answers
60 views

Using Unity/Unreal as graphic engine while programming the game externally [duplicate]

My favorite language is C++ and I feel most comfortable to stick to it. I made a game in C++ primarily using the console output as a graphical interface: somewhat like that of dwarf fortress. ...
1
vote
1answer
66 views

How can I fix texture clipping in Unreal 4?

I made a small project testing out mini-maps, it worked fine, I left it alone for a few months and reopened the project, and now I'm getting this: I'm not even sure what to call this kind of issue ...
0
votes
1answer
264 views

How to change the time dilation using C++ in Unreal Engine?

I searched a bit and found a blueprint solution which does this but I've just started using Unreal and I prefer C++ instead of this visual programming thingy. I'm looking for a Unity-like ...
0
votes
2answers
49 views

Sprite brighter than texture

I have imported a new texture into UE, and have created a new sprite. I have setup the material of the sprite as follows: I have also set my texture as texture-parameter. But my sprite renders ...
0
votes
1answer
206 views

How to return reference from BlueprintImplementableEvent?

I've got a C++ component and I want to have function which will be implemented in Blueprint like this: ...
0
votes
0answers
140 views

Korean localization does not work after packaging the game in UE4

Works perfectly fine when I launch my game from the Editor. But the moment I package it the translations gets entirely weird. It shows a same Korean character repeatedly instead of showing the actual ...
0
votes
1answer
28 views

UE4 opens C++ project the second time

When I create new C++ Project (Base Code), UE4 opens only code editor (MS VSCode). Then when I close code editor and I open this project, UE4 opens its editor. Why?
1
vote
0answers
80 views

Development decision: how to proceed regarding OpenGL [closed]

There is a 3D app developed by someone with OpenGL almost 2 years ago. The development is not finished by the previous developer and I'm assigned the task to finish it, based on customer requests. I ...
0
votes
1answer
293 views

Object movement in Unreal using BPs and input touch and ARCore

So I am trying to move an object in Unreal through input touch using ARCore. The problem is that I can't use the simple Screen to world position because it just returns a world position wherever the ...
1
vote
1answer
122 views

Native crashes on UE4 android game only in distribution build

As I build my game for development mode and install it directly from apk file to my device, it runs without errors and doesn't crash, there are in-game ads and it is able to get variables from game-...
3
votes
1answer
82 views

How can I handle a transition into building interiors?

I am trying some stuff on Unreal Engine to make something approching games like Commandos series. But for now, I'm stuck with something I can't figure how it is done : How are building interior ...
0
votes
1answer
383 views

Overlay an Image on Screen in Unreal

I need to overlay an image on the screen, the whole screen. The process would be like: A screenshot is captured by the camera. It's blended with another image and the resultant image is displayed on ...
-2
votes
1answer
222 views

Can I use Unreal assets store assets in other Engines?

Unreal recently released a lot of assets from their game Paragon for free; I like some of them but am not particularly fond of the Unreal Engine. Can I use those assets in another engine like Unity ...
0
votes
1answer
117 views

Unreal engine project not responding to key binding changes

I'm getting started with learning Unreal development, and I've created a new project based off the FPS C++ template. I've changed the key mappings inside the DefaultInput.ini, rebuilt the Visual ...
0
votes
1answer
467 views

HUD Text not displaying/drawing

I am trying to use blueprints to display my character's speed using a HUD, but for some reason the text is not displaying. What am I doing wrong? I am using the First Person template.
0
votes
0answers
138 views

Alternatives to bloom for glow?

I am making an android game. Mobile phones are usually very limited in graphics capability and so I do not want to use standard post-process bloom due to performance drawbacks. However I do want to ...
1
vote
0answers
426 views

What include first if I want to comply IWYU(Include-What-You-Use) in Unreal Engine 4?

I read this article. https://docs.unrealengine.com/latest/INT/Programming/UnrealBuildSystem/IWYUReferenceGuide/index.html It says "IWYU mode is enabled by default for the Engine and Engine plugins." ...
0
votes
1answer
513 views

In Unreal4, Can I use switch case in C++ with FString?

I'm making XML parsing code with FXmlNode. I want to iterate through GetChildrenNodes(), and use switch-case with FString which is return value of FXmlNode::GetTag(). Is there someway to do that? Or ...
0
votes
1answer
50 views

Unreal point light error message

How to fix this issue with point lights ?
0
votes
2answers
44 views

Tag object in map in Unreal

Is there a clean way in unreal to place text in the map to tag different buildings and areas for developper that can easily be turned on/off for all the tags in the map?
0
votes
1answer
186 views

Radial/circle placement of meshes [closed]

How to place 10 static meshes in circular pattern so they are equaly aligned from the center ?
1
vote
1answer
61 views

Unreal installation and storage space requirement

I am a new user of Unreal. I installed the program on Windows 7, and after using it for awhile I noticed that the C:/ partition was filling up very fast as I worked on my projects. I store my projects ...
3
votes
0answers
772 views

Engine for 2.5D Voxel Based City Simulation [closed]

We're looking into making a game where you're part of a city and you're interacting with its economy and people. The world should be an open and procedurally generated sandbox to enable players to the ...
0
votes
1answer
151 views

Running an Existing Game Inside of Unreal Engine

Goal Be able to add an overlay (a webcam feed with greenscreen processing) to an existing VR capable flight simulator so that the user can see their physical controls and the sim utilizing green ...
0
votes
1answer
432 views

Issue in using Set Integer (by ref) in Unreal Engine 4.16 blueprint

I am trying to set the value of an integer by reference in a macro created in my blueprint script. The macro does a simple conditional check of an integer and increments it if it is less than a max ...
1
vote
0answers
36 views

How to pass values in UE2Runtime to UnrealScript?

We have a game that launches via vbscript and calls UE2Runtime: ...
1
vote
1answer
1k 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 ...
0
votes
1answer
850 views

undeclared identifier UBoxComponent

I have created an Actor C++ component "PickUp". But there are few lines that are throwing errors. I have declared UShapeComponent, UStaticMeshComponent, USceneComponent, OnPlayerEnterPickUpBox() ...
1
vote
1answer
2k views

What is the Default Pawn class and what is used for in Unreal Engine?

I'm newbie in Unreal Engine and also in games development. I have developed my own version of Pong game (sources here) and I'm confuse with the behaviour of ...
0
votes
2answers
150 views

How do developers implement custom systems (lighting, physics, etc.) in premade game engines that already have these systems, like Unreal or Unity?

Unreal has built in systems for stuff like lighting, for example. If a developer wanted to create and use their own lighting system in Unreal, how do they go about doing that? Or are these systems ...
1
vote
1answer
712 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 ...
-2
votes
1answer
35 views

Error C2010 | (Variable) Unexpected in a marco formal

Don't hate on me I'm new to unreal engine :( Other errors I got when compiling: Not instance of ADD_INTERNAL_DYNAMIC matches the argument list DECLARE_DYNAMIC_MULTICAST_DELEGATE_Threeparams marco ...