Physics update in the Portal Lab

Now Portal Lab can simulate self-collisions between softbody particles!

Now I can simulate the famous question about what happens when two portals approach you:

Or what happens when you hit yourself in the pocket dimension:

And I plan to make one separate video for this in the future, but for now you have access to some spoilers:

Softbody with springs:

Just particles without springs:

Total destruction 😭. This happens because every object have the same mass, and when it pushes to its lower layers, it's almost infinite acceleration. I need to simulate this with lower fps in the future. But you can look at it in the new Portal Lab version.

But at certain angles you will be able to survive:

It's these three scenes:

I also will simulate these things in the future separate video:

To do this now, the engine lacks two important features, but they are pretty simple to implement. Not much hard like self-collisions that I already made.

Also, I simulated what happens when you go through wormhole:

And much more in the program! It's the scene "Video animations" -> "Wormhole teleports object"

And even more crazy, I started moving 2D raymarching curved space visualization from Artem Yashin (https://www.youtube.com/watch?v=9JbYDDjhnx4) (our joint work) into Portal Lab, with softbody simulation on top of that curved space!!!

Right now you can also look at how this space with this softbody looks from inside:

But this is much work in progress, you can access it here in the "Tests" scene:

This became possible, because I completely redesigned drawing in my component system, which allowed me to create Shader component, which allowed me to make this much more configurable. For example, softbody here is just a couple of framebuffers with the size 10x20 and shaders, that accepts SDF as text:

I also simulated this thing from twitter: (my tweet: https://x.com/optozorax/status/2049548670341636203)

I'm not yet able to simulate arbitrarily-shaped portals fully, and this portal have very specific shape (flat to circle segment) (with parametric specification of that shape from any distance from portal). But I plan to make that in the future also with special type of springs. But this is VERY hard feature to make.

To test all of that download latest version of the Portal Lab from this post: https://www.patreon.com/posts/new-portal-lab-158069155