Need help understanding attack chains and input assigning in movesets

[weary oracle]

Hello,
I am modding a souls games for the 1st time, trying to create a custom moveset.
I've been following this guide: https://www.youtube.com/watch?v=GuOfCTR9J4s&t=523s

I am having trouble understanding how the combo chains work, meaning, I don't understand how does the game know which .hkt to play next in the attack chain. I also struggle to understand where does the game read what .hkt is for example backstep R1 and so. I am not sure I also fully understand the role of ERClipGenerator. From my understanding, this tool creates the files that control stuff im asking about, but im not fully sure. The video is great at showing what and how to do it, but it lacks explanation for better understanding of the system, for me at least.

I am asking to have a better understanding of this, because I have some specific animations from Blubbers repo for example, for a heavy attack, having a windup animation -> into a charging animation -> forking into 2 separate animations depending if the attack was fully charged or not, so i have a good understanding of how i'd slap all of that together to work in the game.

Thanks in advance.

[vale breach]

You don't have to understand this lol Just watch the video and see this list https://docs.google.com/spreadsheets/d/1evpDLAfi1b3cYfGilDtMWXDvynwyN_lbX1chnSSR7Uk/edit?gid=1192227505#gid=1192227505

but to answer your question, it's 2 things. Behaviors and HKS

Behavior is what register what type of animation it will be and HKS is the code that will play it

Player HKS would be c0000.hks which by just searching on this server for hks or c0000.hks you will find a lot of info

so yes. HKS has code for example

This for example is for when you activate Barbaric Roar or War cry, then it will change what heavy attack to use

There's a lot and if you are just starting out, then I suggest just following the guide for now and looking for guides in soulsmoddingwiki