c++ - Planning Class Inheritance for Game Objects

This is specifically about the development and planning direction of the game development.

I'm creating a fairly basic RPG and am wondering about the approach that I should take. I've been trying to outline it all in a flow chart first, but want to see if this is a good way of going about it.

For example, I've created a class called "items", which then currently derives into "Weapons" "Armor" and "Potions". I then derive these classes further into specific types and I keep going and going, basically as specific as I want to get.

Before I get too deep into this (again, I'm still planning) - I just want to know if this is a good way of approaching this problem.