Hacker News: chronolitus

New comment by chronolitus in "Why Janet? (2023)"

chronolitus — Wed, 03 Jun 2026 10:17:59 +0000

I wish these posts had more code snippets and examples, seems like a cool language though!

New comment by chronolitus in "Navier-Stokes fluid simulation explained with Godot game engine"

chronolitus — Sun, 31 May 2026 17:48:23 +0000

https://en.wikipedia.org/wiki/Lattice_Boltzmann_methods

Who would you have been if you were born in ancient Rome?

chronolitus — Wed, 27 May 2026 20:12:44 +0000

Article URL: https://yourlifeunderrome.com

Comments URL: https://news.ycombinator.com/item?id=48299917

Points: 6

# Comments: 1

New comment by chronolitus in "Ferrari shares fall after launch of first EV as Jony Ive design proves divisive"

chronolitus — Tue, 26 May 2026 18:16:57 +0000

The design says: "Look at this nice Ferrari-branded toy car! You should have one in your garage, it would look cute next to your real car (_Real_ Ferrari, gas engine, looks like a sleek lion about to eat its prey)". In that sense, it might be perfect - for a brand that's not yet certain that it can stay true to itself in a EV-only world?

New comment by chronolitus in "Waymo in Portland"

chronolitus — Sun, 10 May 2026 02:26:12 +0000

sometimes we do this thing where we pretend rail is super efficient, whereas in reality it's often more expensive than basically any other option, even in countries that do it well (e.g. Switzerland,Japan)

I love rail but it is a convenience / luxury mode in many cases, and should be complimentary to car travel, not replace it.

Bot-AGI-1 – a robotics benchmark for VLMs

chronolitus — Wed, 15 Apr 2026 17:26:04 +0000

Article URL: https://bot-agi.org/

Comments URL: https://news.ycombinator.com/item?id=47782264

Points: 2

# Comments: 1

New comment by chronolitus in "4D Doom"

chronolitus — Wed, 08 Apr 2026 16:37:39 +0000

Honestly the level editor was just me drawing on some paper, then typing out poses and coordinates into the matrices.

But if you want to see a 4D level editor, the dev of 4D Golf made his own, love to see it: https://www.youtube.com/watch?v=5pTBSafvQ7Y

New comment by chronolitus in "4D Doom"

chronolitus — Thu, 02 Apr 2026 05:38:42 +0000

You have a great website

New comment by chronolitus in "4D Doom"

chronolitus — Wed, 01 Apr 2026 19:37:53 +0000

Thanks for the link, 4D Maze is amazing and I had somehow never seen it.

Also, here's a CPU-based prototype that led to the Hyperhell engine:

https://dugas.ch/4d_creatures/4d_camera.html

New comment by chronolitus in "4D Doom"

chronolitus — Wed, 01 Apr 2026 18:44:43 +0000

I'd definitely prefer a human made one. If you know any artists willing to make a proper version of the cover art, I'd be happy to commission one (paid, of course).

New comment by chronolitus in "4D Doom"

chronolitus — Wed, 01 Apr 2026 18:34:58 +0000

Can't wait for the hardware. Only a matter of time until someone makes the first 4D game projected to a 3D hologram.

New comment by chronolitus in "4D Doom"

chronolitus — Wed, 01 Apr 2026 18:30:29 +0000

You may need more than 1 extra axis of rotations, unfortunately. https://youtu.be/tKDMcLW9OnI?t=309

New comment by chronolitus in "4D Doom"

chronolitus — Wed, 01 Apr 2026 18:27:03 +0000

Loved this book! Part of this project started from wanting to make 4D creatures and train them to walk with RL. One interesting fact I learned is that ants would probably have 8 legs in 4D.

Why? Well, apparently ants have 6 legs because this allows tripod-gait, a simple leg movement that always keeps 3 stable points on the ground[1]

In 4D, you'd need 4 points on the ground, hence tetra-pod gait (4+4 legs).

You could of course do with less, I'd guess even as low as 1-2 if you have lots of muscles and good balance.

[1] https://dugas.ch/4d_creatures/tripod_gait.html

New comment by chronolitus in "4D Doom"

chronolitus — Wed, 01 Apr 2026 18:02:06 +0000

I really appreciate your feedback!

I tried pretty hard to increase the rendering efficiency on consumer GPUs. The biggest issue is that the main view is actually a 96x96x96 grid of "pixels" (or voxels). This makes scaling brutal: going up to 128x128x128 we'd double the total amount of pixels, to around as much as 1920x1080 resolution. Doubling the grid res to 256 would get us 16M voxels, which is about the same as two 4K displays. On top of that simple 4D object meshes scale much worse in terms of tetras than 3D objects do.

A quick solution could be to give the user a few resolution options, so they can bravely test the limits of their hardware.

So I've just modified the engine to allow you to specify a custom resolution in the URL:

https://dugas.ch/hyperhell/levels/the_bargain.html?vox_resol...

(Higher resolutions might break rendering entirely if the accel structure doesn't fit in allowed memory anymore. I was able to push it to 160x160x160 on my machines)

I'll also try to think of other ways to make the rendering more efficient, maybe a BVH instead of my simpler grid-based acceleration structure? My background is not in computer graphics, so others here might have better ideas.

4D Doom

chronolitus — Fri, 27 Mar 2026 22:19:34 +0000

Article URL: https://github.com/danieldugas/HYPERHELL

Comments URL: https://news.ycombinator.com/item?id=47549128

Points: 286

# Comments: 80

New comment by chronolitus in "I don't know if my job will still exist in ten years"

chronolitus — Sun, 08 Mar 2026 05:25:51 +0000

10 years? These days ten years feel like an absurdly long time in the future.

Show HN: I made a 4D version of DOOM

chronolitus — Wed, 25 Feb 2026 02:03:15 +0000

Article URL: https://hyperhell.itch.io/hyperhell

Comments URL: https://news.ycombinator.com/item?id=47146371

Points: 2

# Comments: 0

Hyperhell: A 4-Dimensional Doom-Like (WebGPU)

chronolitus — Mon, 16 Feb 2026 17:56:25 +0000

Article URL: https://dugas.ch/hyperhell/

Comments URL: https://news.ycombinator.com/item?id=47038016

Points: 2

# Comments: 0

New comment by chronolitus in "Visualizing the 4th Dimension with WebGPU"

chronolitus — Sat, 13 Dec 2025 02:58:39 +0000

I had been working on a 4-th Dimension renderer project, when yesterday I saw the hackernews post where Gemini predicts the front page 10 years from now[1], and one title was "Visualizing the 5th dimension with WebGPU 2.0".

So I figured, what the heck, might as well make the implied previous article real, and fulfill our collective destinies.

[1] https://news.ycombinator.com/item?id=46205632

Visualizing the 4th Dimension with WebGPU

chronolitus — Sat, 13 Dec 2025 02:56:09 +0000

Article URL: https://dugas.ch/funderstanding/visualizing_the_4th_dimension.html

Comments URL: https://news.ycombinator.com/item?id=46251580

Points: 2

# Comments: 1