Jay Versluis In this article I’ll explain how to add gamepad and keyboard navigation to UI Widgets in Unreal Engine. To my surprise, gamepad navigation magically works alongside regular mouse navigation, as long as Keyboard Focus is set appropriately on any of our UI elements. We don’t need to add any special logic to our project. All …
I just solved a puzzle that appeared so simple at first: I wanted to replace an image that was a child of a button in a UI widget in Unreal Engine. I had set it in the UI Designer just fine, simply picked it from the drop-down menu as an initial value, but then wanted …
Blender can define regions in the viewport that should be displayed rendered. That’s useful if we want to focus on a small portion of our scene. Rather than have the whole viewport displayed in rendered view, we can draw a border using CTRL + B, thereby defining a Render Region. This region manifests as that …
You may have seen projects or screenshots of Blender displaying a disturbing view of the timeline, in which rather than a pure 12345 frame count, you get something like 44+2 or 18+16. Something that sends the cold shivers down any animator’s spine. What is this madness you ask, and how can we restore it to …
When we begin a new Unreal Engine project, it’ll always ask us if we’d like to add the Starter Content pack. I was recently working on something and thought, “had I only said YES when I created this”, but alas I did not – and was without the Starter Content. Of course it can be …
I’ve just learnt how to update a counter variable in Unreal Engine. There are several steps to it and some prerequisites, namely: we need to have a variable to read out we need a text field to be updated we need to bind the text field to the variable we need a widget and add …
Transparency is handled differently across render engines and file formats. While a PNG, TIF or GIF file can contain transparency data, a JPG image cannot. DAZ Studio’s Iray render engine can’t handle transparency data embedded in such images and requires the use of a special Opacity or Transparency Map. This might sound a little confusing, …
When you’re done with UV Mapping in Blender, you may need to save out a template of your hard work so that you or someone else in your team can get to work on some fabulous textures. In case you ever need to save out such a UV Template, head over to the UV Editing …
Something that wasn’t immediately obvious to me is that Unreal Engine saves its own file format under the hood. For example, a prop or audio file is not stored as .OBJ or .WAV, but as .UASSET file. Perhaps it’s just a wrapper that stores binary data, or maybe it’s some other kind of magic. Be …
I’ve just learnt about a nifty mechanism to change parameters on a material node in Unreal Engine. The niftyness lies in the fact that when we convert static values in the material editor into parameters, which then become the equivalent of public variables that are accessible from other parts of UE4. It sounds way scarier than it is, let me show you how it works in detail.
There’s a slightly weird terminology I keep hearing in various 3D applications. Those terms are Yaw, Pitch and Roll. I have trouble remembering which one is which, and which one is related to what axis in 3D space. I’m more used to the Euler notation system, and the only one I can remember is “roll” …
I’ve always been marvelling at all the little moving background items in video games. Most trees, grass, plants and such foliage appears to move subtly. How do they do that? Perhaps it’s a wind node? Surely that’ll eat up huge amounts of resources.
I just found a computationally cheaper trick to do this, namely by adding this effect to the plant’s material, thanks to a video by MetalGameStudios. It suggests that we can do this in two ways, both of which are described below. In either case, open the material of your object to proceed.
I’ve been on Patreon since May 2018 (I think), and I really like it. It’s a great way to support me and my projects ongoingly, and I’ve been able to invest your donations into anything from software to hardware, as well as coffee – all to improve my output and make the world a happier …
The EPIC Games launcher is a really handy tool from anything to add content into your projects or to browse marketplace assets. It has this annoying habit of closing automatically when Unreal Engine or a game of your choice is running. This might be fine for gamers, but I find myself frequently re-opening it once …
I had a question from one of my supporters the other day about how to remove a dForce Modifier from an object, like hair or a dress. Turns our there are two answers to the puzzle, and I thought I’d them both here. Disabling dForce dForce is a surface property, and as such it behaves …
I’ve just figured out how to setup keyframe animations in Unreal Engine, and thought I’d make a note of it before I forget. I made the animation above a little while ago by “poking around”, but it wasn’t as smooth as I liked it to be. I think I’ve found the missing bits now, so here’s how it works. From what I gather, Unreal Engine calls Keyframe Animations “Cinematics”. They’re a little tricky to setup, because the whole engine is built for so much more, but in principle we need to:
I’m going to create a camera animation like in the demo above, but any regular mesh object and Actor can be animated, including lights and their properties, so this process is not limited to cameras. However you need at least one camera to render out the sequence, at least that’s my goal here. The process will be different if you’d like to trigger the sequence from within a game, which is not in the scope of this article.
Let’s see how to do this step by step.
Following on from my earlier article about referencing a Blueprint from another Blueprint, Unreal Engine has another interesting way for inter-object communication. Sometimes we need to reference more than one object, say when press a button and want several objects to react, all in their own different way. Imagine pressing a button and a light goes off, a particle effect gets triggered and several enemies get spawned. Event Dispatchers can do that, and here’s how we can use them.
In this example I’ll have a Switch object, and a Lamp object. When we press the switch, it’ll send out a message to which the Lamp (and other objects) can react. Each object can implement the function and execute different code. I’ll only show the abstracted Lamp code here for brevity, from which I’m sure you’ll understand the gist.
Sadly the terminology “dispatcher” is a little confusing. At least to me, it suggests that an event is dispatched (i.e. sent), whereas in reality the dispatcher is actually the listener rather than the sender. Hence the dispatcher needs to be setup on the event that needs to react. A real-world dispatch worker doesn’t work that way (thanks code people for confusing us non-coders).
Imagine we had a Lamp object in our scene, and a Switch we can flick so that it turns on. Both objects are instances of a Blueprint, so the switch needs to know which lamp we’re talking about. Although it seems obvious to us as humans (or to our 3D player), this situation isn’t as …
I’ve recently had to use a helper object in Unreal Engine (a plane), but I didn’t want this object to be seen when the game was running. In a regular 3D application I would have just clicked that little eyeball icon to hide it, but that would temporarily remove the object from my scene in …
I’ve made a simple moving platform in Unreal Engine today. This is used in platform games all the time, be it as a triggered mechanism or an automatically moving always-looping/moving thing. Remember all those gaps you need to cross over a deep ravine, while stone platforms are moving left and right, and you’ll have to …
When something happens in our game, we may need to play a sound file. Think of anything from firing a bullet, playing footsteps during a walk, or a sound that is fired as a result of us sliding something open. To play those sorts of files we can use a method called Play Sound At …
I’ve been following Katie’s videos to get my feet wet with Unreal Engine, and thought I’d take a note on how to build her sliding door so I don’t forget. Here’s how I’ve built mine in principle:
I’m doing it slightly different to how Katie suggests it, but there’s really no right or wrong way. I’ve described how to do something similar with a Level Sequence in another article. Let’s see how to do it with a Sequence Node here.
I bought the Synty Farm Asset pack recently. The demo level looks great, except for the fact that the windmills dotted around the farm are not rotating. This looks a little bit out of place with the rest of the animated scene. Being the newbie that I am, I was wondering how I could make …
I’ve just found out how to change values for Morph Targets on objects in Unreal Engine via code. This will come in handy when any attribute needs to be updated either as a result of user input, or via automation. Here’s the basic workflow:
Here’s a small example that continuously changes my Genesis 8 character from Basic Female into Olympia. While not particularly useful in itself, it illustrates how a parameter change can trigger a morph.
When you start a new Blueprint Class in Unreal Engine, there’s this weird white ball that shows up in the centre of the viewport. I believe it represents the Default Root object. Trouble is, there’s no obvious way to get rid of it, even when you add a mesh object to your Blueprint. For a troubled and easily confused beginner like myself, I don’t even know what question to type into Google to get an approximate answer.
In this article I’ll show you the simple solution to the problem. Here’s the ball I’m referring to:
Even with a Static Mesh in my scene, that ball persist. I can’t even select it.
In this episode I’ll show you the complex process of setting up animated particles in Blender. I’m doing this for an Eevee render, but the principle will work in Cycles just as well. They can be used to give atmosphere and depth to your renders, or to create other exciting effects like bokeh. There’s a lot going on in this video, so I thought I’d provide some written instructions in this article too. Here’s what’s coming up:
For this whole project I’ve used Blender 2.83.1. You can see an example of the effect in action on my Sad Robot animation. My wonderful Patreon Supporters have access to the scene file I’m building for dissection, study, amendment and commercial use.
Enjoy!
Remember how I was so thrilled about that new Blue Yeti microphone in my previous post, and how this thing sold out so quickly? Well it arrived… and I’m less than pleased with the service I’ve received from online giant Amazon.
What they’ve sent me as the correct item, but it was not a new item. It showed heavy signs of usage. Let me show you some pictures below, anon about that hilarious chat I had with their customer services agent.
Grab a coffee and read a funny story of how Amazon may have lost their edge in Customer Satisfaction.
I always forget how to rotate HDRIs in Blender. It’s really not that difficult, but somehow this information doesn’t seem to save in my brain. I’ve given up trying understand why, so I thought I’d write it down for a future visit. At least I know where to look now 🙂 In the Shading Tab, …
Getting characters and scenes from DAZ Studio into Blender is one of the toughest things to get right. It’s an endlessly time consuming, confusion and generally un-fun process. Several scripts exist to make this happen, yet many of them fail to make it a one-click solution. Jacques aka mCasual has been working for years on something called TeleBlender. Steve aka Backdoor 3D recently did a live stream on the process, and I finally had a chance to try it out myself.
In this article I’ll show you the workflow that I found worked best for me. You may know a better way, and perhaps it’s not the intended way of working, but it thought it might come in handy (since usage instructions on the download page of TeleBlender are literally non-existent).
I’m using the following versions, which will probably no longer exist by the time you read this article:
You may have seen the announcement about DAZ Central recently, DAZ’s new content management app. I’ve had a look at it as soon as I heard it and I thought I’d give you my impressions and opinions about the new software. I’ll also try to answer the question why it even exists, considering that we …