Making a crate spinner system

[emrek]

I am adding a crate system to my game and I have never done this before so I am following a tutorial I found on the dev forum, however I am doing it a little different to fit my game.

Creating a Crate/Spin System

Update: This project is no longer actively supported, however the methodology and coded examples should be more than enough to guide you in setting up your own spinner. Have fun! What is a Crate System? Playing around a few front-page games, you’ll notice a popular method for earning items: spinners! Generally, they contain a collection of items of varying rarities which are rewarded randomly after purchasing a crate. In this tutorial I’ll be covering how to setup such a system, along with e…

Everything is going smoothly but I am stuck on the part where I have to randomly select a group of items to be put into the spinner based on the odds of the crate. First I am doing a common crate and here are the odds for that crate.

CommonChance = 0.6
UnCommonChance = 0.3
RareChance = 0.1

I have all the items that can be in crates in 3 different folders in ServerStorage. One folder is Accessories, one is Faces, and the other is costumes. Each item has a Color3Value based on the rarity. I did this so it would be easier to make the UI. So common is grey, uncommon is green ect… In the tutorial what it says to do is create a group of 45 random items and just pick the 40th one to be the winner. I like this however I can’t figure out how to create that random group. How can I create a function to go through all the folders and pick out 45 random items following the odds and put them in a group.