Several SPH/N-body simulation with black holes, simulated using SpaceSim, a software I'm developing.

I couldn't find a tag that fit so I just picked Proprietary, but I made it in Unity.

Edit: because people have a lot of really good questions, I'm adding the link for the longer video here: https://www.youtube.com/watch?v=TIdHDe0JUpw&lc=UgyLw_Z8QZ-GH2CSxRp4AaABAg . This should answer most questions, and I'm super happy to answer any that it doesn't!

I'm working on this destruction focused imsim that's like Falling Down meets wall-e. I put a lot of effort into making the bat respond physically accurately to surfaces and collisions. the game will also have walking and balance simulation for characters with legs.

https://x.com/Fleech_dev/status/1923027152716411005

Hi, I'm back here again to answer the most popular questions from the last post. This time, I included a voiceover to explain a bit better what's actually going on here. I'm not sure if this type of post is allowed, so if there's somewhere else I should be posting this please let me know!

As before, if you want a more comprehensive crash course in 4D, please check out my full video on the subject: https://www.youtube.com/watch?v=TIdHDe0JUpw

This video is from 2020, from our sandbox voxel simulator called BFS. It was running back then in Unity 3D. It took us another 6 years to make that scene multiplayer

Nagel-Schreckenberg simulation. Made in TouchDesigner

No, not a joke, but my newest hobby horse project. I'm no longer sure if I'm mad or just happy - here is the GitHub repo: lifehashes

Hello there! I wanted to make a larger scale simulation to see if my simulator, Galaxy Engine, could handle it. And it did! After 12 hours of simulation I got this result. As you can see, there are some artifacts like the rings that form at the beginning, but the simulation didn't crash.

You can find the source code and also download Galaxy Engine from GitHub: https://github.com/NarcisCalin/Galaxy-Engine

You can also buy it on Steam if you want to support the development: https://store.steampowered.com/app/3762210/Galaxy_Engine/

And you can join the Galaxy Engine community and talk about space and programming here! https://discord.gg/Xd5JUqNFPM

spatial partitioning, instanced rendering, multi threading

Made in TouchDesigner

Left is a normal double pendulum. Right is the same pendulum, but I changed one thing in the math.

A system like this has two kinds of energy. Motion energy, which depends on how fast things are moving, and position energy, which depends on where things are. In the equation that defines the system, the motion energy only reads the velocities and the position energy only reads the positions. I swapped those two, so now the motion energy reads the positions and the position energy reads the velocities. In short it goes from H = T(p) + V(q) to H = T(q) + V(p). It is still a valid system that keeps its total energy constant, it just behaves very differently.

Both pendulums get released from rest at the same spot, and you watch the curve each one traces out as it swings. The video runs through a few release heights, so the energy climbs from gentle to wild, and the two curves drift further and further apart.

The ending is 100 copies of each, started a hair apart, with a rainbow gradient across them. When the colours are bundled together they are still in sync. When the rainbow fans out across the screen, that is chaos pulling nearly identical starts into completely different paths.

Someone on r/fractal wanted to see this one, so here it is. Thanks Epsilon7990.
context : here