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Comment by somat | Hacker News Reader

I just watched the associated dev video And if I understand it, what the author is doing is kind of interesting.

The sensor to see a 3d scene is 2d(eye or camera). What is being done here is simulating a 3d sensor(for a 4d world) then we are looking at this 3d sensor using our 2d sensors (eyes). I don't know if this is the common way of rendering these 4d physics simulations. But it is the first I have heard it described this way. It is also why the narrative of the game focuses on eyes, because that is what it is doing.

https://www.youtube.com/watch?v=tKDMcLW9OnI

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Reminds me a bit of a guy who created a functional virtual camera in Blender with lenses and film layers.

https://www.youtube.com/watch?v=YE9rEQAGpLw

Nitpick - your eyes are, in combination, a 3d sensor. Individually they're 2d sensors, but together they can detect three dimensional information.

Strictly speaking this doesn't make them a true 3d sensor, but rather a 2d sensor with an accompanying depth-map. In order for them to be true 3d sensors they'd be have to transmit information about both the near and far sides of an object simultaneously, for example.

Very true, a 4 dimensional being with 3 dimensional eyes would be able to look inside closed boxes, and see every side of every object at once. (just like we can see every part of a 2d scene all at once)

Not merely 2d + depth perspective.

Arguably, humans are 4-dimensional beings living in a 4-dimensional world—it’s just that one of the dimensions is accessible with much fewer degrees of freedom.

(Not unlike how a seemingly 2-dimensional world of a top-down FPS is actually 3-dimensional, you just have to follow way more rules when it comes to moving in the third one.)

Hmmm... Agreed that they're mostly 2D sensors, but apart from near-field the post-processing brain can use depth-cues to for us 'see' in 3D. Also, you don't see in 3D unless your head/eyes/target is moving, right?

You definitely get 3D from just having twin perspectives on an object. You get even more when moving your head.

I don't want to be the guy who has to use this level editor (although, in a similar way, doom was 2.5d, and so the level editor could essentially be 2d, so maybe it's not so bad?)

If this is 4d doom, i wonder what 4d quake could be

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

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