Today I added merging. Now, objects that get too close to each other don’t do weird physics-breaking stuff. They intuitively merge into an object with a total mass, total area, and a new velocity depending on the previous velocities. This way, you can actually build complex systems that fall apart in at least an ordered way.

There was a slight problem if the objects were going too fast: because of their speed, one frame they would be behind each other and the next frame they would be ahead of each other. I had to do some math to see if the path they took went through the object we were checking. That was a very fun, intuitive piece to work on, and merging now works very intuitively and very well.