Ask Unreal Anything: World Building | August 23, 2022 at 12PM EDT

[RichMawlow]

@RGapper

Q: any tutorials on this in the future, swapping worlds at a click of a button? Arran Langmead touched on this in his vid and illustrated something like this from the Valley of the ancients UE5 demo. Can I swap out landscapes or is it just meshes??

Using Runtime Data Layers, you can dynamically load/unload/activate(make visible) actors. You are right, Valley of the ancients does that by preloading a 2nd version of the world. In the demo, all actors part of the “dark world” are placed in a Runtime Data Layer. The initial runtime state of the Data Layer is set to Loaded to avoid waiting to data to be streamed-in when when switching to dark world. The inverse is applied on actors that we want to hide or unload.