This week I had to animate material properties on a number of objects from Sequencer. That’s not a big problem when you can access the object directly, but in my case it was a blueprint that had several child blueprints attached (an array of lightbeam objects, each of which was setup with a dynamic material …
Sometimes you want to assign a material to a portion of an existing asset, but there’s just no zone setup to make that happen. Thankfully the Modelling Tools in Unreal Engine have tools to create and delete material zones from selections. It’s designed to be deliberately unintuitive of course, so here’s a quick guide on …
EPIC have implemented some changes in the way Media Plate actors are handled in Unreal Engine 5.5. In addition to the (still experimental) Media Plate plugin, there’s now a new Holdout Composite plugin/component combo available that’s enabled by default. Due to changes implemented therein, emissive plates can apparently handle image content better and even works …
Here’s the solution to a rather tricky puzzle I’ve spent researching all day. Imagine you had a Blueprint that’s made up of Child Actor Components (potentially other blueprints with their own logic). How do we access parameters on those children, and how do we do this via Sequencer or other blueprint logic? Quite the task …
I was working on my laptop in a doctor’s waiting room the other day, twiddling with the construction script of a Blueprint, when my trackball sort of slipped. Next thing I see is a completely empty construction script gaph, missing its root node. I could still move around drag other nodes in, but without the …
Some plugins can cause trouble and keep the Unreal Editor from starting. When that happens, there’s no way to disable a plugin via the GUI. Thankfully it doesn’t quite mean “game over” just yet, because we can tweak our project’s configuration file to exclude plugins that may prevent a start. Here’s how to do it: …
Flipping or recalculating normals usually requires a round-trip into a modelling app, but thanks to Unreal Engine’s built-in modelling tools, it can also be done “in-Engine” as they say. Let’s see how to do it! It’s a little hard to see from this screenshot, but the object on the right needs its normals flipped for …
Node graphs can get large and insane fast, and often it’s not feasible to drag wires across long distances and into multiple nodes. It’s impossible to decipher relatively simple stuff we’ve done weeks ago, only because the node setup got a little out of hand. That’s where Named Reroute Declaration Nodes come in. They’re really …
When you create a new level in Unreal Engine, chances are that they come with a pre-defined outdoor light setup consisting of the following items: I was wondering how to change the size of the sun disk in the sky to create more dramatic sunset scenes without resorting to a plugin like Ultra Dynamic Sky, …
I’ve been tinkering with a flickering light effect. While it is possible to animate the intensity with Blueprint code directly, there’s an easier way that lets us use the intensity as an override and make the light flicker without futzing with variables. The solution is a Light Function. To create one, let’s make a new …
I had this warning in Unreal Engine 5.3 recently when opening a level and didn’t quite know what to make of it: “Spatially loaded actor references a non-spatially loaded actor”. Everything seemed to be working fine, and since it wasn’t an error as such, I didn’t worry too much about it. Curious about what this …
I’ve turned several objects from a pre-built level into a Blueprint, with the intention of spreading it around as duplicates elsewhere in my level. There was no logic involved, it was just a collection of static meshes. I’ve dragged several copies of my Blueprint into the same level, and when I was happy with the …
The other day I needed to make some geometric changes to an object in Blender that relied on my object looking handsome when viewed through a specific camera in Unreal Engine. Hence the best way to work was to export the camera I had setup in UE, and it wasn’t obvious how to do that. …
Here’s another Unreal Engine oddity that many have come across, including myself: some actors in the outliner show as “unloaded”. You can’t navigate to them, you can’t right-click on them and make them show up, they just linger like a ghost. Here’s an example: This only seems to happen when World Partitioning is enabled and …
It took me a while to find the recipe for handsome looking creepy fog results in Unreal Engine with Ultra Dynamic Sky. Here’s how I did it, just so I can reproduce it next time I need it (section in brackets):
Some materials require static boolean inputs to apply effects. They’re easy to setup in base materials, but don’t translate into instances because they’re static. To give users the option to enable such booleans in material instances, we can use Switch Parameters. Here’s how to set them up on the base material: Instead of supplying the …
There is a neat way to turn static meshes into dynamic follower clothing in Unreal Engine! Since 5.3 there’s a Chaos Cloth plugin that ships with the engine, although it’s only really become usable in 5.4. It looks more complicated than it is, so let me walk you through the basic workflow in principle: Let’s …
Some Daz outfits use both a bump and a normal map to create handsome looking details in Daz Studio. Sadly though, by default the current Daz to Unreal bridge only transfers one or the other, which means we’re not getting the same details showing up after the transfer in Unreal Engine. The G9 Summer Bikini …
Sometimes we need objects to fade in and out in our animations, but sadly not every material lets us do this. Those that are designed with any kind of opacity in mind will already have a map plugged into the respective channel, and it’s easy to designate a scalar parameter with a multiply node and …
I’ve been experimenting with Groom Hair in Unreal Engine today, first time ever and I currently know almost nothing about it. Groom is UE’s strand-based hair system with real time physics we don’t have to setup from scratch, unlike those horrible cloth weight maps and collision shapes. Groom hair “just works” – I have no …
The latest version of Daz to Unreal supports geoshells (in beta)! That’s great news for objects and rely on them, because we can finally use those in Unreal Engine. Geoshells are a native Daz Studio feature, so they come in as a separate material on top of the figure they’re meant to be used with. …
Control Rigs are Unreal Engine’s “easy” way of letting us animate objects and characters in Sequencer. They allow us to create new and override existing animations directly on the timeline. These things are ever so slightly intimidating to set up, but if you know how they work, you’ll be able to animate any rigged object …
The windows in EPIC’s famous City Sample project are made with HDRIs and a snazzy parallax effect so that it appears there’s depth and geometry behind them. Some windows are illuminated, which is done by making those materials emissive. The default value works well for the daylight scene, but not so well for in night …
The famous City Sample project from The Matrix Awakened has a night mode feature players can switch to from the in-game mini menu. That’s no good though if you want to use the project for rendering scenes via Sequencer. Thankfully there’s an easy way to enable this, let me show you how. First, find BP_Nightmode …
I’ve recently bought an XP Pen Artist Pro 27″ and absolutely love it. It’s replaced my aging Wacom Intuos 4 from over 10 years ago and doubles as my Desktop’s main display. Most apps (aside from Blender) work out of the box, and changing what the pen needs to do works well with the included …
RectLights are light objects that emit light from a plane. They’re great to emulate anything from neon strip lights to regular flat lights like spots or soft boxes. We can position and scale them uniformly, but we cannot scale them along one axis with the regular scale controls, but there some interesting settings under the …
It took me a while to figure out how to mute one or more audio tracks in Unreal Engine. Most documentation explains how to do this in Blueprints, but I was looking for a casual mute button that we get in Premiere. Sadly such an option doesn’t exist, but the next best thing is to …
To optimise real-time performance, Unreal Engine employs a number of tricks under the hood to make drawing images as fast as possible. One such trick is to replace objects on screen with lower-resolution versions as they are drawn further away from the camera. Those are called LODs (Levels of Detail) and although they’re great when …
Whether you open a static mesh, a skeleton or a particle effect, Unreal Engine will show you a mini viewport featuring a HDRI of the the EPIC Campus in North Carolina. That’s fine for most situations, but sometimes we may want to change this to something like a night scene, a different lightning mood or …
When a new window opens in UE, it usually does so as a floating instance, typically occluding your viewport. This can be confusing to newcomers, and it’s annoying to power users too. I typically drag those tabs and dock them next to my main viewport to make adjustments (unless I have a very specific reason …