I'm searching some library which implement the Component Based Entity System (ECS) framework used in multiple game and implementend in many game engine (unity, libgdx, etc.)
I'm starting a little game project in scala ( ECS roguelike), and at this time i only find a java library named ashley.
Do you know if other ECS libraries (in Scala) exists, or if the only way is to use or reimplement this library in scala (ashley) ?
Another related question, the Actor paradigm and Component Based Entity System is not so distant, what is the difference ?
Regarding the question about differences with an Actor system, the purpose of an Actor system is to allow asynchronous communication between actors. i don't see anything in ECS which is related to asynchronicity. In fact, from one of your links:
Each system will be updated once per frame in a logical order
This implies synchronous, blocking progress through the program, so quite different from an actor system where the components would be sending each other messages in a concurrent fashion.
Regarding your need for an ECS library in Scala. Scala and Java are interoperable, is there any reason you can't simply use ashley within your scala code?