Port Entt core

[planetis-m]

destral_ecs is a C header-only library based on EnTT, it's well written and documented. Provides the same storage and entity management scheme found in EnTT, while being easier to read and understand than C++ templates. Downside, it is less optimized. But nevertheless a good starting point.

You can use it to write your own game engine, or application using the ECS pattern.