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Questions tagged [unreal-blueprint]

Blueprints are Unreal Engine 4's visual programming structure. Use this tag for all questions related to blueprint programming in Unreal Engine 4.

Unreal Engine 4's Blueprint system replaced Unreal Engine 3's Kismet in May 2012. Blueprints help add functionality to meshes, props and players in order to turn 3d art into a working game.

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How can I create the equivalent of Unity LookAt in Unreal blueprint?

In Unreal, I want to rotate an actor where the forward vector points at target's current position, to ensure that the up vector of my actor is the same at the up vector of my target In Unity3D, it's super simple. It's a single line of code…
probitaille
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Blueprint loop/for/while node with custom c++ blueprint function library in unreal engine 4 (ue4)

I need to create a custom blueprint node. I am using the blueprint function library. The node will look like this: Input: int timedelayforeachloop int numberofloops output: exc loop exc completed loop1.h // Fill out your copyright notice in the…
Random Stuff
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TravelFailure on Unreal Engine 4

Hello i am working on a project at my company. We have built an game for VR environment and we want to make it multiplayer. Everything is working but when we are joining a session it gives the "TravelFailure" I have already looked on google they…
user11867894
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Error: Unable to instantiate module 'Launch': System.FormatException: Input string was not in a correct format

When I try to upload ios application from Unreal Engine to iTunes Connect I get the following error: ERROR: Unable to instantiate module 'Launch': System.FormatException: Input string was not in a correct format. Everything it feels…
William
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Getting yaw angle between two actors - Unreal Blueprints

I'm working on a VR game in Unreal Engine 4 using Blueprints. I want to calculate the (yaw) angle the user needs to turn his/her gun (whose direction is determined via the position of the motion controllers) in order to be pointing towards the…
amb9800
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How to get actor's primitive component

I am trying to disable an actor's physics using Blueprints. I know I can do this with Set Simulate Physics, but this function requires a Primitive Component. Currently I have the actor object reference, I am looking for a function that allows me…
Juan Esteban Ladron De Guevara
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Actor Has Tag is returning false for my comparison

I am trying to check for an actor's tag, "object", but the function is always returning false. I am using LineTrace to check actor's info, object names for instance are return good. I will put a link to a couple of screenshots of my…
Juan Esteban Ladron De Guevara
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Blueprint doesn't affect its parent - Unreal Engine

I have C++ Character class called VRCharacter with the attributes programmed in C++ as follow: VRRoot = CreateDefaultSubobject(TEXT("VRRoot")); VRRoot->SetupAttachment(GetRootComponent()); Camera =…
sourceplaze
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UE4 Problem with Waves Watermaterial and Mesh

At the moment I work at my Water Material for my Ocean. I know how to how to create Material with Sinus Wave GerstnerWaves and all what's needed. But the Problem is when I apply this to a plane the whole plane is moving. And not waves on the…
Juan
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Unreal Engine 4: How to load map with different game mode?

We have two maps: Map 1: Title Menu - Uses a custom game mode with the HUD for handling Options, etc and no spawn Map 2: Actual Main Level - Uses the default Third Person Game Mode When we run both maps in editor, they work great, but when we try to…
JMHere
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Are UE4 Blueprints the same with a C++ class? If so, how will I implement a class design?

Good day! I am new to using Unreal Engine 4 and I have a few questions about how exactly blueprints work. From my understanding of it, every blueprint works like a class. By that I mean one blueprint is much like one class in an OOP programming…
Chris Javier Oliveros
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Unreal Engine: Load static mesh from file path

Good day! I just started studying Unreal Engine 4.12 for a week now. For your discretion - I have little knowledge in C++ programming. (Although I code using PHP so I understanding OOP to some extent) - and, I'm just getting a little familiar with…
Chris Javier Oliveros
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How to make Unreal Engine 4 Full Screen (Windows Package)

I'm really new to the Unreal Engine 4 and I need some help, I can't find the answer on the internet so I hope someone here can help. When I go to the Package project (Windows) when I open the game, how do I make it always and by default in full…
Daniel Morris
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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++: UFUnction* Func = Obj->GetClass()->FindFunction(FName("FuncName")); if(Func == nullptr){return;} FStructOnScope FuncParam(Func); UProperty* ReturnProp =…
VansFannel
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How to get the mac address of HoloLens 2 in Unreal Engine?

I would like to get the mac address of HoloLens 2 in Unreal Engine using either C++ or blueprint. Is there a way to get the mac address/serial number or any sort of solution to identify the uniqueness of the device?
Vasanthakumar Kalaikkovan
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