Random Distribution System (RDS) Calculator, aka Loot Tables the web app.
Inspired by Mike (Prof. Chuck)'s article, this is an implementation in Ruby on Rails.
This is a standard Rails app that uses Postgres and Tailwind. This app expects a modern Ruby version, likely 3.2.2+, and is built on Rails 7.
After bundling and running rake db:create and rake db:migrate, run the app with ./bin/dev, as this will start the app with a paired watch process to recompile Tailwind.
The root model is the LootTable made up of a name. A LootItem has a name, a parent LootTable, a probability, a min and max to make up a quantity range, a couple of options, and an optional link back to a LootTable other than its parent. A Roll has a quantity and parent LootTable. Loot has a name, a quantity, and a parent Roll.
Users of this system would create a LootTable, add LootItems to the table, "roll" (and therefore create Rolls) on the table, and get a consolidated list of LootItems (aka the Loot). Think monster drops in role playing games or any of the game mastering tables from table top games.
Run the tests with rake test.
Deployment is automatic with Railway using a Docker container on push to the main branch.