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

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4
votes
2answers
673 views

How do I Rigidbody.AddForce(Vector3) in Unreal Engine?

I am coming from the Unity Engine, and trying to get my feet wet with Unreal Engine 4.8.x. I want to add a one-time force to an object. To accomplish this in Unity 5, I would use: void Start(){ ...
1
vote
1answer
42 views

How to find a point on a plane?

I'm using unreal engine 4. Currently I ray trace to a surface in game and I'm trying to find the location of the point relative to the surface1 instead of the world. I have the world position of the ...
2
votes
1answer
215 views

How can I go about testing games on a console

I was wondering how I could play a game I've made on a console (PS3). I don't want to sell it or anything I just want to test it for now, also do I still have to do that whole registration thing to do ...
0
votes
1answer
89 views

Call a BlueprintImplementableEvent from c++ in unreal editor?

I created a custom actor: BPTest.h: #include "GameFramework/Actor.h" #include "BPTest.generated.h" UCLASS(Blueprintable, BlueprintType) class ABPTest : public AActor { GENERATED_BODY() public: ...
3
votes
0answers
37 views

Emissive material not casting light on itself in Unreal

I have a static mesh that has an emissive material applied to part of the mesh. The emissive material successfully cast light to surrounding objects. However, the face of the mesh with the emissive ...
0
votes
0answers
14 views

Free for use 3d models / meshes for use in UE4 [duplicate]

Does anyone know a good place where I can get free 3d models or/and meshes that work with UE4? because so far i can't find any good sites that are free.
2
votes
1answer
656 views

In UE4, how do I turn my character's body together with the camera?

I made a simple punch animation in Blender and exported it into Unreal Engine 4. In-game, the character appeared from a 3rd-person perspective, but I made it look like first-person by adjusting the ...
1
vote
0answers
17 views

Where should I put code to be run on the client after connecting to a server?

I'm making a multiplayer game with Unreal Engine, and I need to run some blueprint code on the client after they have connected to the server. This includes creating the HUD widget, uploading the ...
4
votes
0answers
573 views

Why are god objects so common in game programming? [closed]

This is a bit of a philosophical question. Excuse me if it's out of place here. Most modern games developed in C++ use (or at least purport to use) an object-oriented approach. A common axiom of ...
0
votes
0answers
103 views

How to convert mouse location with respect to any camera/object in Unreal?

I am currently working on a VR project (First Person Shooter) where the player can shoot any where on the screen. I am using a Render to Texture method. The VR part is working fine. The problem I am ...
0
votes
0answers
17 views

How to align hands and gun with view while aiming? (Unreal Engine 4)

As the question reads, I had questions about how to make the aiming work for a gun in a game. This has 2 major parts, the gun and the body. I want to make sure the hands look realistic while moving ...
0
votes
0answers
24 views

character teleporting repeatedly into/above ground

I'm trying to make a HTC Vive Game in Unreal Engine 4. I'm not a programmer, so im new to all this. What i am trying to do is, make my character move with the thumb pad. I got the moving part ...
1
vote
3answers
670 views

Quality Current Free UDK Tutorials? [closed]

I'm just getting started with the UDK, with experience in Unity, and would like a good tutorial series about getting to know my way around the basics of level design and a touch on programming. I have ...
1
vote
0answers
124 views

Help me to find a simple 3D game development tutorial in Unreal Engine 4 [closed]

I am looking already several hours to find a UE4 tutorial that creates a simple 3D game from scratch, but not using Blueprint. Instead I would like to see complete C++ tutorial. Cannot find any ...
2
votes
1answer
113 views

How to create a looping or spherical world?

I wish to create a 3D first person world, in which the player, once they reach one end of the map are unknowingly transported back to the opposite end, or a spherical world with a surface where the ...
0
votes
2answers
61 views

Best way to do headshot decapitation?

I'm using UE4 and blender. I was wondering what the process is of preparing in the 3D software and then making a head burst animation upon headshot. I don't want to do destructible meshes because they ...
1
vote
0answers
64 views

How does the Unreal Engine transaction (undo/redo) system work?

I would like the transaction system to handle the create/update/deletion of some custom objects. Then I can proceed as follow: // Create custom object: GEditor->BeginTransaction(FText::FromString(...
0
votes
0answers
20 views

Use UMG to extend an FModeToolkit in Unreal Engine 4?

I have a custom FModeToolkit, I would like to extend it with UMG (ultimately with Unreal.js, but it should work with Blueprints). How can I do it? I try to add a UWidget to this custom FModeToolkit, ...
3
votes
0answers
36 views

UE4 - Viewport mouselook always on

Does anyone know how to set mouselook to always on instead of having to click and hold the RMB? I would press and hold a different hotkey to "disengage" mouselook and allow object selection. I was ...
1
vote
1answer
87 views

Multiple UV coordinates in Unreal Engine Procedural Mesh Component?

How can I have multiple UV coordinates per vertex in a Procedural Mesh Component? My goal is to create a UV editor. I know it is possible to generate multiple vertices per corner, as in ...
0
votes
2answers
2k views

How to auto animate character movement - Unreal engine 4

I am learning Unreal 4. And basically I want to find out how to auto move character. Which means when I start playing I want the character to auto move forward without my interaction. I know how to do ...
0
votes
0answers
27 views

XCode debug visualizers for Unreal engine 4.10?

Are there any debug visualizers (.natvis file) for XCode? I would like TMap/TSet to display correctly in XCode using Unreal Engine 4.10. I followed this thread to have them working in Visual Studio ...
1
vote
0answers
26 views

How to change text on collision in Unreal Engine

I've just started using Unreal Engine, and I was trying to do a super simple game where there is a character that has text above his head that says 'Bag 'o' fries'. My plan was to have it so if ...
2
votes
1answer
296 views

How to avoid gimbal lock in Unreal Engine (c++)?

I created an orbit camera (sometimes called turntable camera; similar to the one with the "use UE3 orbit controls" setting in a static mesh view). I attached the camera to a USpringArmComponent with ...
0
votes
1answer
60 views

How to handle focus on a custom actor in Unreal Engine?

I created a custom actor, placed it on my scene and selected it. When I press "F" to focus on it, the camera zoom back very far from the scene, probably because I didn't implement the method supposed ...
0
votes
2answers
70 views

What if I extend a uclass without UClass() in Unreal Engine?

What happens if I extend a uclass (or UObject) without the UClass() macro? Will it still be a UClass() and managed by the garbage collector? I'm just curious. Update I managed to extend ...
0
votes
1answer
44 views

Why do I get link errors when extending UBatchLineComponent in UE?

I got some link errors when extending UBatchLineComponent this way: UCLASS(MinimalAPI) class UPBLineBatchComponent : public ULineBatchComponent { GENERATED_UCLASS_BODY() public: virtual void ...
0
votes
0answers
23 views

Handle actor deletion undo in Unreal Editor?

I have some objects pointing to a scene component of an actor: class MyObject { USceneComponent* Component; } When the actor is deleted, all its components are also deleted. So when the delete ...
9
votes
2answers
331 views

How to determine lowest PC requirenments for my game to run

so I've created my first game in UE4 (4.9.2 version) and want to publish it. But i really don't know how to determine lowest possible environment my game runs on.Also I am unsure what other files ...
0
votes
1answer
20 views

How to refresh Unreal Editor Viewport when dragging a spinbox (FModeToolkit)?

The viewport of my custom EdMode does not update while I drag a spinbox (which is in a custom FModeToolkit). In fact, MyCustomEdMode::Render() is not even called (while the spinbox). How can I ...
1
vote
0answers
771 views

Get derived Pawn from collision actor in UE4

I am trying to build a basic RTS unit selection but any time I try to possess the target pawn it crashes. The pawn in the collision is a blueprint derived directly from APawn. Am I casting from the ...
0
votes
0answers
106 views

Create custom UE4 editor viewport and display meshes?

I want to create a custom viewport (to edit UVs). I looked at SStaticMeshEditorViewport and FStaticMeshEditorViewportClient. I made a Viewport which inherits from SEditorViewport, and a ViewportClient ...
4
votes
0answers
140 views

Can a sprite be rendered with thickness in Unreal Engine?

Is there a convenient way to have a 2D pixel art image with transparency (not partial) rendered with a thickness in Unreal Engine? Paper2D does exactly what I want, except it's a flat plane. I'm able ...
4
votes
1answer
1k views

How can I place the player into a 360° video in UE4?

I have a 360° video (6 separate videos stitched together into a panorama) with a first person view walking through an environment. I would like to put this in a game engine such that the actor can ...
0
votes
0answers
24 views

What is the implementation of Complex Automation Tests in UE4?

I can write some basic simple automation tests, but the complex ones confuse me. Would I be right in asserting that a complex automation test first runs the GetTests, then runs the RunTest multiple ...
0
votes
0answers
45 views

How do I control the game with UE4 Automation testing?

I can do some basic testing with UE4's automation testing, however anything more complex is confusing and the documentation isn't helping. I am using the third person C++ example, and I would like to ...
0
votes
1answer
97 views

How can I correctly instantiate an octree in UE4?

I tried to create a simple Octree like this: (I looked at the FMeshTriOctree source code since no question in answers.unrealengine.com helped me) // My FVertex class is slightly more complexe, but ...
3
votes
1answer
516 views

Importing materials from blender to UE4

So my problem is that I have a nice green glass material in blender which I imported to UE4 (4.8.1) but in the editor the material was just a simple green colour. I have no idea what I should do to ...
0
votes
0answers
25 views

Paper2d Networking Issue

I followed the the Paper2d tutorial from Unreal Engine. At part 9 (youtube.com/watch?v=vwZVlgcMGI4) he adds a intelligent lift. It works fine but it's bugged in multiplayer. The Lift location is not ...
1
vote
1answer
220 views

Why does compiling Unreal Engine fail in Xcode on OS X?

I'm following Ben Tristem's latest course on using Unreal Engine and coding in C++. I have issues getting into Unreal however: when I create a project, it does its stuff, i.e. generates code, compiles ...
2
votes
0answers
58 views

Implementing Browser in Unreal Engine 4.10

I am looking to add some oauth to a game I am working on. I can get the user auth to work in the browser that comes with UE4, however there is not any capability to detect changes to the currently ...
0
votes
0answers
36 views

Blender to Unreal or Unity - will combining animations into one clip for a parent object to store effect workflow?

Hey so I have a gun and a set of rigged hands in blender, and I was wondering if I made a parent object for the gun, hands and everything, took all the animations respectively (such as right hand ...
0
votes
0answers
42 views

Are CreateOrthonormalBasis and OrthoNormalize equivalents?

I've been looking at the functions in Unity's Vector3 class and Unreal's FVector class. I have been trying to find overlapping functions from each but can't figure if CreateOrthonormalBasis and ...
2
votes
1answer
223 views

How to disable camera moves (mouse drag) in an Unreal Engine editor plugin?

I tried to override FEdMode: virtual bool DisallowMouseDeltaTracking() const override { UE_LOG(LogTemp, Warning, TEXT("do not allow mouse delta tracking!")); return true; // I also tried to ...
0
votes
0answers
123 views

Draw n pixels wide lines in 3D world in unreal engine 4?

Is it possible to draw n pixels wide lines (like the ones I would have with GL_Lines in OpenGL) ? I'm looking for something like this.
6
votes
1answer
544 views

How are the Unreal Development Kit (UDK) and Unreal Engine 4 (UE4) related?

I'm thinking of learning Unreal Engine 4, but it costs money, and I want to try and keep costs as low as possible while I'm learning. In contrast, the Unreal Development Kit is free. How similar are ...
4
votes
1answer
251 views

How to reduce color space in a post-processing material in Unreal Engine 4

I'm trying to get an old-school Quake 1 look going in UE4. I am currently using this blueprint in order to get a retro style large pixel filter. In game (might need to zoom in to see the ...
2
votes
1answer
243 views

How to get the mouse events in an unreal engine editor plugin?

I would like to react to user inputs in an editor plugin, how can I do that? In a game I can use a custom Pawn or a custom PlayerController but how can I do it in the editor?
2
votes
2answers
385 views

Casting in UE4 to derived class

I’m stuck in understanding of usable actors from survivable c++ example. I have return Cast<AUsableItem>(Hit.GetActor());. I have class AUsableItem. And I have another class AUsableWeapon ...
1
vote
0answers
34 views

Unreal 4: Checking out with Git as VCS

I have my editor configured to use git as my VCS. I have my own server in which the repo is hosted. I followed the GIT with Unreal 4 guide. My problem is that I cannot find the "Check Out" option in ...