Ehcya
3 months ago
Hello enete,
Thank you for your feedback. The naming issue is unfortunately due to a limitation in the Blender's Python API: there isn't a way to refer to bones by using pointers so I have to use names for lookups (which is also why I put the warning about bone renames in the wiki https://swingy-bone-physics.github.io/wiki/bone-chain/basics/ ). If you know a solution to this please let me know, I know that several other addon developpers got the same problem.
As for the floor collision you can do that by adding a cylinder collision profile, scale it and position it so that the top lines up with the floor limit you're trying to define.
Hopefully that helps, best of luck for your projects!