Reminds me of cube the engine of sauberbraten2 - who uses a C/C++ hybrid with complex inheritance to inherit methods - like everything is a starts as an object. And so on and so forth.. turning inheritance into basically a mapped out set theory with the final class being the outermost part of a set holding the abilities of all inner sets. https://github.com/embeddedc/sauerbraten/tree/master/src

Its not very intuitive used that way.