rbfx VS Cinder

good engines for C++ that meet your requirements https://github.com/u3d-community/U3D https://github.com/rbfx/rbfx i highly recommend taking a look at rbfx, U3D doesn't have all the fancy features that rbfx has but deep down they are the same engine almost. They are forks of Urho3D, a mature engine that has existed from the year of 2011/2010.

Urho3D is dead. There is the U3D project which is essentially a maintenance fork made after the original project was taken over by a crazy Russian nationalist. There is also rbfx which is a progression fork that is working to make improvements such as to the PBR rendering pipeline, making it work with C# if desired, as well as rebuilding and improving the editor. The original Urho3D is soon to be even more dead than currently, since the discourse forum is set for archival and deactivation at 4:00 AM tomorrow morning.

Go to: https://github.com/rbfx/rbfx, they have a discord but IIRC it's basically just a CMake build so you flip the flags to say "WebGL" or "Emscripten" or w/e and CMake will basically tell you everything that's wrong.

If anyone is looking for a Unity alternative, the guys at rbfx are doing a great job revamping the old Urho3D codebase: https://github.com/rbfx/rbfx

It has good C# scripting support, a nice editor and modern rendering pipeline.

You could try Urho3D or its newer fork rbfx.

I use an engine called rbfx which is a fork of the Urho3D engine. A lot of it is just the fact that I've been using it for over a decade, so I am comfortable with it. I'm a programmer, not really comfortable with integrated editor engines such as Unity or Godot, and the easy C++ extensibility of the engine appeals to me. Plus it's decently powerful, and well supported on a lot of platforms (I build for Windows, WebGL, and very occasionally RPi for the most part) and is open source to satisfy that stubbornly libertarian side of my character.

Have you come across openFrameworks (https://openframeworks.cc/) or Cinder (https://libcinder.org/)?

CProcessing reminds me of Cinder

I only used SFML, currently making a 2D isometric game. I really like it so far overall, easy to use IMO, pretty well documented. Does what I need it to do. Heard good things about SDL2 and also Cinder++ (https://libcinder.org/) also.

What kind of game? You might be better off using a game engine unless it's more of a simple starter project. Check out https://libcinder.org/ or see lots of engines here: https://github.com/collections/game-engines

Cinder

Try Cinder (https://libcinder.org/). I have not tried it myself but it seems to have the same goals as P5 and Processing (ie. creative coding).

Kind of a shorty thing for Meta to do when Cinder is already taken by https://libcinder.org

or its C++ cousins openFrameworks and Cinder

Mid Level [Three.js (WebGL)(https://libcinder.org/) Mesh, Geometry, Material, Lighting] [Graphics Library]