Collision with environment like walls, tree, and buildings

[MemoryWrong]

Hi, guys after playing with R3F, i am doing a simple RPG game demo my own. And I have some questions here ? really appreciate if you guys can provide some useful links thanks a lot.

Collision questions:

• i am trying to use cannon.js [https://github.com/pmndrs/use-cannon/tree/master/packages/react-three-cannon] to add 'static' body to walls or trees. But for character, which body (like useBox) and what type ('dynamic' or 'Kinematic') is the best for player character ?
• and for those complex model for example building like bridge, how can I add those shape into params ?

Particle questions:

• i want to create fireball magic spell like World of Warcraft, is there any example there ?