Hello!
I want to ask you if I can put Havok components (Havok Cloth, Havok AI etc.) into Esenthel Engine and how I can do this.
Thank you.

I see no reason why any external tools that have a C/C++ interface couldn't be integrated into Esenthel so long as you are aware of what information/data needs to be shared between the two and the details of how to configure the interface.

However, unless someone has specifically interfaced Havok already (which I'm currently unaware of) I'm not sure you'll get much more detail on this.

I've not looked at the Havok tools in detail but from what I have seen they look quite impressive. There is a lot of inherent support already in Esenthel for nav mesh construction and path finding but maybe you need more sophisticated tools.

Have you used Havok tools before? I know they are cross platform and support streaming worlds. I'd be interested in any feedback if you have some.