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Overview

This is something that has been highly requested so I hope this tutorial will be helpful for the sims 4 cc community!

This tutorial will have 2 parts for creating 2 different types of CAS "room" backgrounds. Part 1 (The Easy Way) uses a template I created for you to use your own 2D images/screenshots with a simple rectangular mirror. Part 2 (The 3D Room) will result in a better quality background, but it’s not a beginner friendly project so I don’t recommend trying it if you’ve never made any cc before. I will not cover the basics of cc making here, only what’s relevant to making a CAS bg using my template specifically. The Sims 4 Studio forum has a ton of great tutorials for everything else.

In my own research & experimentation, I noticed that (as far as I can tell) EVERY other CAS room with a functional mirror seems to be derived originally from LittleDica's CAS room [link] I want to acknowledge credit to LittleDica for their CAS background which I studied as a reference. But to be clear this tutorial and my templates are NOT derived from another creators' work; I created mine from scratch and it took a lot of time and effort. My version is much more simple and more compatible with Sims 4 Studio because there are no extra mesh groups or diffuse maps. I also made a great effort to make the reflection in the mirror more realistic for the size of the room. I hope you will be able to use this resource to create your own beautiful CAS backgrounds! ♥

Also in case you missed it, you can download my CAS background used in the preview [here] (it is slightly different from the template package.)

Requirements:

Sims 4 studio

Image editor (Ideally photoshop)

my templates (attached below)

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Part 01: The Easy Way

The easiest way to create a CAS background with mirror is to use my attached templates.

The PSD template is the best option, but for those of you that don’t have Photoshop, there is a PNG version as well.

You will need 2 images; one for the main background, and one that will be reflected in the mirror. The large top area is the main background, and the smaller rectangle at the bottom is what will be reflected in the mirror behind your sim.

In the image editor, paste your images and resize them to fit into the outlined areas.

For framing your screenshots, it’s important to understand that the mirror is actually just floating in space in front of a flat background. That means you’ll have to fake the perspective a bit and that may require some trial and error to get right. I recommend taking multiple screenshots at a variety of angles so you have options to work with. Use the model sim as a guide to help you with placing your background image. (Don’t forget to hide the model sim and UV layout when you’re done!)

Save as .PNG or .DDS and import it into the template package in Sims 4 Studio.

That’s it! My goal was to make it super easy for you. Remember to only use one CAS background in your mods folder at a time since it's an override. Also note that it is not compatible with 'cas blob remover' since the instance for the dropshadow is now used as the mirror.

TOU — PLEASE READ:

I give permission to the Sims community to use my template files and modify them as needed to create your own CAS backgrounds. This took months of work, researching and experimenting, so please respect the effort I put into creating this resource by agreeing to these simple terms:

Don’t re-upload my files. Don’t claim my work as your own. If you use my templates for your cc, please share credit with my username (Lijoue) and link to my Patreon page. If you make any money from cc created with my templates, please consider making a donation via my Patreon. It is greatly appreciated.

download template files here

Part 02: The 3D Room

to be continued…

This part will take more time to finish because there’s a lot more steps involved in creating a 3D CAS room. In the meantime, the template should be enough of a starting point for those of you that already know how to make cc objects, since I already handled the hardest parts. Just understand that the mirror reflection is not automatically calculated, meaning that if you move the mirror in the mesh, you will need to change the Mirror Plane Normal and Mirror Plane Offset in S4Studio Warehouse to match the new angle or position. Otherwise it may look unrealistic or worse, it could reflect the eerie wasteland world that the CAS room is set in. (pictured below)