Huge UI upgrade and fixed a few small bugs!

I’ve added a background, two different car assets, and 3 different levels! I also upgraded the buttons (but I forgot to apply them to the simulation window, so you’ll see them in the next devlog). Additionally, I added dragging in the simulation window, which was in the Editor but not the Simulation for some reason.

There were also two major bugs that I fixed today:

• Broken pathfinding on some cases: I was kind of stupid and had this weird edge case in a set where roads would not insert because the set thought they were equal because of a dumb comparison function, but that is fixed now. It took me way to long to fix this, but at least that’s done now.
• Cars always faced right (east): If you didn’t notice, in all my previous devlogs, the cars (which were just placeholder red squares) didn’t ever turn, which was kind of silly of me. Luckily, that was pretty easy to fix and I only had to change 3 functions.