How to begin with?

The company I work on required me to do an enviroment simulator… it’s quite simple, all it have to do is show a living room, or a kitchen, room, etc and you can switch the type of door on it (similar to the sims, but in 2d actually)… but I’m really lost on how to do it, beginner here…

Bad news. It’s not easy. Unless you have half decent knowledge of the engine. Do you? Do tell as it might be easier to point you to relevant resources.

You have the physics tag, is this relevant?

Get a free one from the marketplace or suggest them one with a fitting price tag. Saying this because if you still need to learn the basics of the engine you’ll be spending a lot of time which they don’t want to pay for anyway. Don’t do it in your free time unless you really really want to do it yourself.