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Questions tagged [blueprints]

Blueprints is a visual, node-based scripting model used by Unreal Engine 4.

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How to make AI Character move towards Actor Object

I have in my scene an AI Character and Actor Object, but the character won't move no matter what I've tried. You can see the current code with debug statements. I'm not sure what I'm missing because I'...
Robert the Bruce's user avatar
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How do I gradually slow down player rotation in unreal vr

I'm trying to make it so when the right stick is held in a direction to rotate the camera that way, it eases in and out to make it less jarring than being completely linear. What I have so far does ...
desperrrr's user avatar
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triangle twice too big for mesh blueprint

I don't understand why the triangles covering my mesh are twice too big Here's my blueprints main function calling the mesh and the triangle function: the mesh function which is supposed to work ...
loic tonneau's user avatar
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0 answers
50 views

Help with making biomes and cities with procedural generation

I'm working on a game in Unreal Engine 5 with Blueprints and the Fast Noise plugin. I've been having trouble getting the biomes and cities set up. I'm not fully sure how to make the biomes affect the ...
Jam's user avatar
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1 vote
3 answers
305 views

How to send an HTTP Request from an Unreal Blueprint?

I'm updating a little telemetry-logging blueprint that uses HTTP requests to log game events to a server. In the past, I've used the Fetch plugin for this, though it's currently listed as "Not ...
LudoProf's user avatar
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21 votes
7 answers
18k views

Do real game developers use blueprints, or do they always use C++?

I'm starting to learn Unreal Engine 4. Every time I use blueprints, I think "that's not right" and I need to use C++, but there are not as many tutorials with c++ code. So, is it ok to use ...
mendzek 's user avatar
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0 answers
18 views

Switching between cameras in blueprints

I'm hoping that someone can help me, I have a blueprint called BP_NPC_Shop that holds some objects and a box collision, when the player runs over that box collision ...
Alestes's user avatar
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1 answer
79 views

Why do the camera and the character not move when I use my own mapping context?

I replaced the defult mannequin with my character and created a new input action and an input mapping context. But when I change the default mapping context to mine, the camera and the character ...
dsa's user avatar
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1 vote
1 answer
194 views

Best practice for Actor Components that require other Actor Component functionality

I struggle to understand best practices regarding composition and inheritance for Actor Components in Unreal Engine 5. Concretely, I want to build a base class, say ...
Simon Fischer's user avatar
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1 answer
96 views

What is the best way to handle removing elements from an array while iterating through it in Unreal Engine Blueprint?

I'm trying to remove "Park" Area Controls from a Scene Actions array in Unreal Engine Blueprint. My current attempt doesn't work, and I'd appreciate help troubleshooting it. Details: I have ...
User_4373's user avatar
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1 vote
0 answers
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How to animate multiple animation blueprints offseting time for each instance?

I'm new to Unreal Engine and would like to get an effect similar to this one: The idea is to have an Animation BluePrint with data from a Live Link Pose node to start with. To achieve the effect, my ...
George Profenza's user avatar
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523 views

How to provide an array of positions to Create Points Node via Blueprint variables?

I wanted to use the Create Points node from PCG to align objects in a certain way. For this I've created a variable in my Blueprint ArrayOfPosition with type Array ...
Fedor  Petrov's user avatar
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91 views

How to organize widgets in Unreal Engine for multiplayer

I am a beginner UI programmer working with UMG. My question: are there ways to organize widgets other than, you know, the master widget that holds the rest of the widgets? WBP_Master -> (...
anime username's user avatar
1 vote
1 answer
2k views

Trouble adding C++ actor component to blueprint in Unreal 5

I'm a veteran C++ dev, but so far I've only been working with blueprints in Unreal. I'm now attempting to mix the two. I have a blueprint actor I'd like to attach a component to, but the actor ...
Nightmare Games's user avatar
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1 answer
161 views

Cannot access pawn from attached actor component

I have a pawn blueprint that contains some AI movement code, and looks like this: Now I'm attempting to move that functionality into an actor component so it's easily transferrable to other enemy ...
Nightmare Games's user avatar
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0 answers
708 views

How does the UE5 Control Rig Sphere Trace by Trace Channel Work?

I would like to use a control rig to correct the foot IK. First, I defined a function called "FootTrace" to detect the ground under the feet. In this function, I used "GetTransform-Bone&...
Nater's user avatar
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2 votes
1 answer
1k views

Variable "is not blueprint visible" in function library

I am trying to create a function that simply returns some hardcoded values so that I can use them in other functions within the function library. However, I'm getting the error: ...
Matt's user avatar
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0 votes
2 answers
1k views

BeginPlay and Tick do not work for blueprint class inherited from C++ class

The problem is that the begin play and tick functions do not work in a blueprint inherited from a C++ class. If the blueprint does not inherit from a C++ class, then the functions work perfectly. ...
OMEGA's user avatar
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0 answers
68 views

Analyzing audio in C++ / Unreal Engine 5 without plugins

This project is done in Unreal Engine 5. I would prefer doing this in C++ instead of Blueprints, but I'm open to any ideas. I am trying to take an audio file and create the data needed to make an ...
Bob's user avatar
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0 votes
2 answers
62 views

Efficient way to organize your collectible Actors

Assuming I want to make a RPG, where I can pick up different stuff, like plants and weapons. How would you create the Actors? More precisely: Would you create an Actor for every item, maybe deriving ...
debaser36's user avatar
1 vote
0 answers
29 views

Execute both exec ports in the same frame

I made the following: Notice the [Button] node has two execute ports. The CLICKED exec port is executed when a button is clicked. The other exec port is supposed ...
clankill3r's user avatar
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0 answers
1k views

Simulate Physics causes Actor to fall through ground when player interacts

I've set up a simple code that allows the player to use a line trace to pick up objects and assign them to one of three sockets on the character mesh. I then set up the ability for the player to ...
NeonIndica's user avatar
1 vote
0 answers
74 views

Is there a way to modify the scene in the Blueprint editor without affecting the blueprint itself?

I'm working on a game in Unreal Engine 4 where I have a similar set of blueprints. Each blueprint exists in a scene with trees and a night sky, so I want to be able to have such a scene load by ...
DonutGaz's user avatar
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0 answers
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Can’t load game correctly

I have Save/Load functionality where I use LoadGameFromSlot, SaveGameToSlot and SaveGame ...
Amazing User's user avatar
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1 answer
185 views

Alter vehicle angle to match that of ground

I am trying to align a non physics vehicle to the same angle as the floor, using blueprints in UE4.27 At first, I used normals, but this has undesired effects when going over things like speed bumps. ...
agreenleaf's user avatar
2 votes
3 answers
5k views

BlueprintCallable functions not appearing in Blueprint - UE5

Only just started working with Unreal Engine 5 and I have an issue were my BlueprintCallable functions are not appearing/callable in the blueprint. I dont have the same issue with Unreal Engine 4. ...
LavsTo's user avatar
  • 51
0 votes
1 answer
2k views

Help swapping out one player character for another

recently I’ve been working on a system that would allow the player to swap out one character for another with a touch of a button. So far I’ve just been trying to focus on switching to one character ...
Hungry Moogle's user avatar
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0 answers
318 views

Can't save high score in Unreal Engine blueprints

I'm trying to make a pinball game in Unreal Engine with blueprints, but the high score does not save. You have 2 lives while playing, and after the game ends this save game function executes. The game ...
UE GameDev's user avatar
1 vote
0 answers
1k views

Problem rendering Custom Fonts on UE4 Text Render Component

I have imported a TTF font on unreal engine. At first I just let unreal engine create the Font asset automatically, but when I try to create a material with that font it gives me a warning telling me ...
Shirofuji's user avatar
1 vote
0 answers
27 views

UE4 - Low level calls in blueprint

I am looking to use blueprint nodes described as Low-level calls in the documentation such as this one https://docs.unrealengine.com/4.26/en-US/BlueprintAPI/Game/Cinematic/JumpTo_Frames/ but I can't ...
Francesco's user avatar
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1 answer
82 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 ...
Francesco's user avatar
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1 answer
56 views

My character runs around on their own after picking up an object

I have a weird bug on my hands. I am trying to create an event whereby the character walks into an object and automatically picks it up once the collision occurs. The character can pick up the object (...
gash_'s user avatar
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0 votes
1 answer
2k views

Blueprint can't pull a function from a Widget

I am working on a project and I am stumped on something and it is taking me to long to fix this issue. As seen above I am this is where I am, what I need to do is set up a widget text that changes by ...
Thatdoid's user avatar
1 vote
1 answer
2k views

Save current pose snapshot of a skeletal mesh as a new animation sequence asset from blueprint

What I'm trying to do is create a Blueprint Utility tool that lets me create an Animation Sequence asset to save the current Pose Snapshot of a skeletal mesh. I see there's Create Asset node from ...
Simone Lungarella's user avatar
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1 answer
334 views

Inheritance in Unreal C++. "GetOwningActor" doesnt return type "AMyPlayer"

...
I_Keep_Trying's user avatar
1 vote
0 answers
310 views

Unreal How to Feed Images into Open CV Lens Distortion Calibrator

I'm currently trying to use the OpenCV Lens Distortion plugin that comes installed by default with the Virtual Production example in Unreal 4.27 to try and create a camera undistortion texture for my ...
Benjamin Danger Johnson's user avatar
0 votes
1 answer
272 views

How to access a Material Editor node from a script?

Is it possible to access a node from the Material Editor from a C++ script? I'd like to be able to change the value of 'Mulitply' from a script.
I_Keep_Trying's user avatar
3 votes
2 answers
2k views

Ue5 AI MoveTo does not work

I have been having problems working with AI MoveTo and created a very basic version in the hopes of finding the problem: As you may see, I have one single character with the default skeletal mesh and ...
Pumpkin's user avatar
  • 133
1 vote
0 answers
119 views

Why instantiated Static Mesh gets scaled in Unreal Engine 4? [closed]

Building a project in Unreal Engine 4.26 while trying to increase performance of the videogame I ended up using instances of static meshes where possible. This generated an issue: My instantiated ...
Simone Lungarella's user avatar
0 votes
0 answers
101 views

How do I create surfing?

I want to know how I can lerp from my current position, to another position, while hugging the terrain. Imagine I'm doing something like surfing, or skateboarding, where I need to follow the rail......
Ryan Glenn's user avatar
1 vote
1 answer
941 views

How to desaturate and blur the game world when paused in Unreal Engine 4

I am creating the pause menu for my game. I want the screen to turn black and white and blurry when it is paused, much like Left4Dead. But the only special effect I can find is background blur. How ...
Bitslay'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
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
  • 185
0 votes
2 answers
633 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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-1 votes
1 answer
182 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
1 answer
83 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
1 vote
1 answer
913 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
153 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
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
0 votes
1 answer
405 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