Questions tagged [blueprints]

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

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How to display Render Target live to HUD widget in UE4

I'm making a security camera system in Unreal Engine 4. It allows the player to 'activate' the monitor, which should display the Render Target texture or the material made from it on the HUD. However, ...
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1answer
434 views

Create a instance of a C++ class within a blueprint

I'd like to create an instance of a C++ class in a blueprint. That's my current approach, but the instance is None. Why?
3
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1answer
33 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 ...
3
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0answers
75 views

Many-to-one and feedback loop connections allowed in UE4 blueprints

Under what circumstances is it allowed to connect: Multiple execution output ports (those with the blank triangle) in different branches to one single execution input, effectively merging the ...
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1answer
3k views

Unreal Engine: Object Reference is not compatible with pawn Object Reference

Hello I am a beginner Unreal Engine developer learning with Blueprint and I am trying to take an imported FBX model and put a pawn control on it. Below is what I am trying to do. By the way, ...
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1answer
156 views

Root Animation unusual position and non root animation snaps back

Im trying to do a stop animation . when i release the W key then from Run it will do this animation then goto IDLE . But somehow this is not working right. as you see in those videos below. So how do ...
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1answer
101 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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1answer
59 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 ...
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0answers
33 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 ...
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0answers
24 views

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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0answers
155 views

In UE4's Blueprints, how do I activate something when the player looks at it?

I want to make an object that activates when the player presses a button, then looks at it. How can I do this using Blueprints Visual Scripting?
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1answer
259 views

Ledge Detection with Plane Intersection?

i am working on a ledge climb system and I am currently refactoring it to make it more reliable. I am tracing with a sphere towards infront of my character. If it found something, I trace downwards. ...
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1answer
382 views

Can Unreal Engine Blueprints do everything C ++ code can?

Can Unreal Engine Blueprints do everything that C++ code can? Or are there limitations and some stuff you can't do in Blueprint and only using C++?
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4answers
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How to make TEXT RENDER stand facing the camera of my character and also for the camera of simulation?

I have an actor (Minion) with a Text Render just above it mesh: As you have seen, I defined your rotation as absolute, so the text does not rotate along with the actor. In the game the rotation ...
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1answer
647 views

Unreal Engine without Blueprints

Hello fellow coders I have been using Unity and other game dev libraries fora fun hobby for many years (on-and-off, I am no expert!). But I really am not happy with Unity and their multiplayer network ...
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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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1answer
313 views

Making a box character in UE4, not a capsule

I want to make a character for a Breakout game that is a kind of cube. From the instructions from Unreal it appears I need to create a 'Character' blueprint. But when i do this, it comes with ...
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2answers
14k views

How to resolve "Accessed None trying to read property" error?

Whenever I finish running the project, this error message appears: Blueprint Runtime Error: "Accessed None trying to read property jogador". Blueprint: Jogador_BP_Anim Function: Execute ...
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1answer
3k views

UE4 Multiplayer how to replicate Player name in lobby

I've been working on a little 1V1 snipper project to try and get a better grip on the replication and the game framework of unreal engine. So after the core gameplay, I'm trying to make a lobby ...
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1answer
1k views

Passing by pointer-reference in blueprints with C++ definitions

MyFunction( Class *& foo ) Inside a derivative BP of the above C++ class: foo shows up as an output rather than an input. Why?
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1answer
250 views

How do I access a struct that resides within a struct in blueprints?

I have a struct: "FOuterStruct" This is defined in code such that it contains another struct type: ...
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2answers
102 views

How to decrease the size of a distance?

I made a code for the character to be teleported to the place where the mouse cursor is, if the distance is less than or equal to 350. Blueprint: I happen to wish that if the distance were greater, ...
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1answer
2k views

Unreal 4 - How to access and iterate through the polygons of a mesh?

I'm newbie with Unreal Engine 4. I need to create a function which calculates the volume of a mesh, based on the following example: https://n-e-r-v-o-u-s.com/blog/?p=4415 To achieve that I created ...
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1answer
2k views

How to stop and start sprite sheet flipbook materials in a widget blueprint?

I have a flipbook material I created from a sprite sheet to add some fireworks to a game I'm working on. I have the material set up and it is showing the animation of the firework like it should. ...
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1answer
1k views

How do I make a 2D World Political map in unreal engine 4?

Can someone explain the basics of making a 2D World map in unreal engine 4 (e.g. similar to the ones used in Plague inc., age of civilizations, etc.) I've seen it being done in unity, but couldn't ...
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1answer
812 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
792 views
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2answers
163 views

How can I add left and right movement to my sprite without reducing forward movement?

I've made a character sprite that moves left and right when I press A and D, and moves forward automatically. However, whenever the character moves left or right, the forward movement is greatly ...
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1answer
3k views

How can I make custom progress bar in unreal engine?

I am trying to make a health bar. I want a masked progress bar so I tried making another progress bar and moving according to the percent of the health in blueprint. But I couldn't find any ...
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1answer
99 views

Why Are Some Foreign Characters Not Displaying Properly

I am localizing a game for the first time and I'm noticing some characters are not displaying properly. Most are fine but there is a small handful that are not correct. For example on a loading screen ...
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1answer
1k views

increasing speed of sound as player approaches

I am trying to create a sound that increases in speed as the player gets closer to the object. The sound is just a single 'ping' and will increase in frequency as we approach, once we are on top of it,...
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2answers
2k views

How can I loop through pixels in the material editor?

I am using Unreal Engine 4, and I want to try to procedurally generate a grass texture. For now, I am using a noise block. Now I want to loop through every 16 pixels or whatever (4x4 squares), take ...
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0answers
49 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 ...
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1answer
99 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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1answer
71 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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0answers
58 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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1answer
436 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
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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0answers
2k views

Old "Play Montage" node vs new 'Montage Play" and "Play Anim Montage"

so.. Following documentation/guides/etc.. I keep coming across the classical node called "Play Montage" which shows one of those Mario Bros pipes as an icon. However, my version of unreal engine does ...
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0answers
137 views

How to make a sprite above my character appear on the minimap attached to the floor?

I have a project where I made 2 minimaps. One of minimaps is linked to the character of my project and the other to the floor: As I already said in the title of the question, my character has a ...
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0answers
24 views

Change text of bus destination sign at runtime

I have rigged a bus in blender and imported it into Unreal. Now I want to change the text of the destination sign at run time. How can i do this?
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1answer
3k views

Creating a real loading screen between levels in Unreal Engine 4

I'm trying to create a loading screen to pop up between levels in Unreal Engine 4. I want to have a traditional loading screen such as the loading screen in Skyrim, where the player presses play and ...
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0answers
313 views

Dragging and dropping sword in unreal engine 4

I am developing a 2d game using unreal engine 4 in which the user drags and drops a sword.I want the sword to follow the position of my finger.At the moment, when I drag the sword, it moves at an ...
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1answer
668 views

UE4 Drag and Drop: Place PaperCharacter Over Image Widget

I'm working on adding drag and drop functionality to my game. I have it working with the exception of I can't get what I'm dropping to be placed where it was dropped. I've tried a number of different ...
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0answers
431 views

Widget text is a different color in game than in engine

I have a widget blueprint to show a main menu. Everything was fine until I recently added a new button in the menu to enable cheat codes. The problem started when I noticed when I changed the color of ...
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0answers
894 views

Unreal: Y-Axis boundary on a Camera Bounding Box

I was wondering if I could get some help with modifying a Blueprint I'm currently using for a project in Unreal Engine. I am currently attempting to make a side-scrolling platformer game and I'm ...
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0answers
71 views

Trying to create a UE4 blueprint or script to recognize set shapes

I'm currently developing an indie game using Unreal Engine 4 and I've stopped developing it within the last week because I have hit a massive roadblock.. I am trying to figure out how to create a ...
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0answers
133 views

UE4 Blueprint / Variable Communication Issues

So I have a system set up in my game that whenever the character collects an object the monster begins to speedup and this is used for each object that player must pickup, although I'm having issues ...
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0answers
83 views

How to place planes for each face of frustrum in Unreal engine?

How to place planes for each side of frustrum from a Blueprint ? How to get the rotation and size for each side of camera frustrum from Bleuprints ?