osu-framework VS o3de

Related to your vision, you should definitely take a look at osu!framework. It's an open-source C# game engine, focused on 2D rendering and UIs. You can see the biggest example of it being used is, of course, osu! itself (osu!lazer, next iteration of osu!). It is so good that it has become my standard in terms of visual design and UI features.

An API I particularly like for this is how osu!framework does it.

Almost unrelated, but for game development (in C#), you might wanna look into the osu!framework, if at least just out of curiosity. It is a free and open-source game engine developed by peppy, the developer of osu!. You would also be able to develop on Linux (where programming tools really shine if you ask me) using VSCode and have neat things like visual tests and other stuff I haven't looked into.

it seems that despite using SDL, if you have "raw input" checked, it still uses the osuTK mouse input handler (https://github.com/ppy/osu-framework/blob/b97c26a684dc8ded5a349d24f8664a4f4b8c42a4/osu.Framework/Platform/DesktopGameHost.cs#L133, that's good)

It's odd to me that when the whole Unity fiasco happened, everyone was basically looking at either Godot or Unreal, but pretty much nobody mentioned or cared for something like O3DE.

If you praise Godot for being open source a lot, then it stands to reason that you should similarly prefer O3DE as opposed to Unreal: https://github.com/o3de/o3de/blob/development/LICENSE.txt (no idea why they're going for both Apache 2 and MIT license, though) vs https://www.unrealengine.com/en-US/license

Unless people just care about the options that are popular enough to warrant their attention and the features that they provide, whereas the licensing is actually a boon, rather than the main factor, given that Unreal also did some slight price increases a while later as well: https://www.unreal-university.blog/post/unreal-engine-5-pric...

Either way, it's still nice to have lots of options available regardless of the licensing details (though this kind of does fragment developers among bunches of different projects), be it Godot, O3DE, Stride, Unreal or even something like jMonkeyEngine (one of the rare Java engines/editors with 3D) or NeoAxis (that one had a cool voxel LOD solution, but performance on AMD hardware was bad).

03DE: Open source game engine, under Apache License 2.0, developed by Amazon and the linux foundation. Seems to work under a modular package called "gems", that you can use to pull in the functionality you need. It uses c++ as it's main language, but you can use Lua, python or visual scripting for scripting stuff. Has multiplayer built into the engine and what they call a "robust" system for open-world games. There seems to be a lot of tutorials on the site, but they aren't laid out great.

Note that Lumberyard became "Open 3D Engine" (yes, very inspired name) which is Apache 2 licensed:

https://o3de.org/

https://github.com/o3de/o3de/

AFAIK all development in Lumberyard has ceased and moved to O3DE.

Don’t forget Amazon’s Lumberyard -> O3DE fork either https://github.com/o3de/o3de

I've worked on this a bit as part of the shader pipeline of Open3DEngine, From my experience there are very few compatibility issues between hlsl and sprir-v, sprir-v to msl however does run into a few issues.Here are the ones I remember