Questions tagged [blueprints]

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

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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 ...
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24 views

Can I call event from itself

I need to change Game Phases during Game Round. The problem is phases haven't same time duration. So as far as I see, there could be timers by event, but I can't change time interval for them. As ...
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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 ...
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11 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.
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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 ...
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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 ...
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40 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......
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Solved UE4, How do it to where when my camera looks up and down my character mesh which is a hand also moves up and down

I am using the blueprint system on the ThirdPersonTemplate, please someone help me i have been stuck here for quite some time... -- SOLVED For anyone wondering all you have to do is set the character ...
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72 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 ...
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34 views

UE4 Blueprints - AI movement on moving platform/object (like a ship deck)

I want to have AI (enemies) on a boat that moves on a path around the level (an island). But the AI seems to have a problem navigating on the deck of the ship. They always end up on the far back of ...
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Panner Node (Planet Material Day/Night Map)

I made an Earth material that rotates and shows day and night by combining different maps and masks (Similar to these set ups https://youtu.be/FMU1FkHFHXk AND https://youtu.be/ugXWt6AmudY). The logic ...
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Unreal Engine 4 DefaultInput.ini mappings not showing in editor

The mappings from DefaultInput.ini are not showing up in the editor. I had originally added them in the editor project settings, but it lost the mappings except for 2 of them Jump and Reset VR. They ...
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83 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++: ...
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144 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?
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14 views

Populating Static Mesh Array

I'm trying to populate a Array of Static Meshes from the On Begin Play event with all the static meshes that are children of the primary object but can't seem to access them as static meshes, any ...
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37 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*)...
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43 views

UE4 Repeat fail: how to feed text widget unique message on instances

I am a noob who has spent many hours looking at similar questions and responses but still failing to get desired result. I am going to be thorough and specific - I'm very keen on walk-throughs with ...
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34 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 ...
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22 views

Custom event doesn't update blueprint variables

Here's what I have: To sum it up: calling the OnInteract event (which comes from an interface) prints the 'Proceed' variable. Clicking Fire sets the variable to true and prints it. 'Proceed' is false ...
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21 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 ...
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9 views

Character is out of location after animation montage in UE4

so I have my running and idle animation working fine on my character but once I do the attack animation thru an animation montage, my character slowly floats off the ground and as I attack many times ...
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1answer
61 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 ...
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79 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 -...
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14 views

Floor is moving faster than ball above it , and it causes ball to fall off the map. UE4

I am creating a game ( following Udemy lesson on Marble run) which is basically a maze and ball and we move ball my rotating floor on x or y axis through obstacles . Floor movement is linked on Mouse ...
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136 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 ...
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87 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 ...
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33 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 ...
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270 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 ...
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52 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. ...
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16 views

Uncover Physics Object to Pick it Up

I want to be able to have physics objects semi-buried in leaves, dirt, or whatever and be able to have the player click on the area a couple times to uncover them, and he can't pick it up until he has ...
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31 views

How can I transfer this code (originally for FPS template) for use in a Third Person Template?

I learned how to create a blueprint for making a character be able to pick up and drop objects: It did not work, and I believe the reason is because it was originally made to work for the FPS ...
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111 views

How to Sync the Location After Getting Up from Ragdoll?

I am currently working on multiplayer fighting game and my game will have an anim->ragdoll when the player is knocked out and be able to getting up from it. My problem now is ragdoll is making my ...
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22 views

Widget button hover event works but not click

This is my first time making a widget and I'm trying to make a super simple one, just a button. However, when I attach the widget to an actor and try to press it, it doesn't register any click events ...
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65 views

How can I to get an animation to be triggered by proximity of a mesh actor (an object)?

So I'm making my first build in Unreal 4 using Blueprint. The "game" calls for the player character to grab a particular object (a static mesh actor) and bring it close to a door that will ...
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857 views

Correct use of AttachActorToActor [ue4]

I'm trying to stick some blocks together, but frankly I have no idea what I'm doing. I spawn 2 blocks during run time, and if they have an on hit event they're supposed to stick to each other. It ...
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166 views

Place actors that attach to other actors and simulate physics as a single object

I'm super new to UE4. I'm making a block-based building game (I know, I know) in which I want to place actors (blocks) that can "attach" to another actor(block), and then simulate physics as ...
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59 views

UE4 Procedural Planet Design

I am building a game that requires a full planet but it would be too complicated to create it as one mesh, so I decided that I will use procedural generation to create the (partially) editable ...
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2answers
59 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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354 views

Optimize spawn & destroy? (Unreal Engine)

I'd really like to know how you'd go about optimizing this? 20 actors each spawning 8 projectiles per 0.1 sec which are then destroyed 0.8 seconds later, all done through blueprints Gif: https://gyazo....
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395 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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22 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
89 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
662 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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70 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
501 views

How to run 'Call in Editor' Functions that are implemented in Level Blueprints?

I have a Blueprint Function within a Level Blueprint, marked as Call In Editor. How can I ...
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1answer
33 views

How to collect objects from map in blueprints

I have a plate with trigger(TriggerVolume) on it. When it overlapped cubes from map deleting. I've manually created references on cubes in blueprint to delete them but it seems very hard-coded. Is ...
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5answers
3k views

Unreal Engine 4 - AI MoveTo always fails

I try to move a character with AI MoveTo, but it always fails. I tried to do this with standart ThirdPersonController and a custom one. The blueprint is simple When the event happens, it starts ...
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674 views

Unreal: Get horizontal angle of velocity-looking direction

I want to calculate the relative angle of the speed in relation to the direction of view: For this I do have the "Get Control Rotation" and the "Get Velocity" of the "Pawn" I am stuck: Yeah I stole ...
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2answers
405 views

How to find the client's monitor valid refresh rates with Unreal Blueprints?

I am making a settings menu. This includes a combo box where you can change the refresh rate setting. How do I find out the maximum allowable refresh rate of the ...