5 ms·

Hm, that's hardly anything like doom. It is more like a very basic raycasting engine from several years before that. Doom in 9800 would be really impressive. Th

by lcswi 11y ago

Hm, that's hardly anything like doom. It is more like a very basic raycasting engine from several years before that. Doom in 9800 would be really impressive. This does not seem very special if you ever wrote your own engine like that.

JonathonW 11y ago
Looks like they have part of what made Doom unique (at the time)-- they've got height differences and non-perpendicular walls, but don't quite have the same lighting and texture mapping capability that Doom had. And the demo doesn't show whether or not they have Doom's dynamic capabilities (that let level builders make things like moving elevators). This looks like it's probably somewhere between Wolfenstein 3D and Doom in terms of engine features.
myth_buster 11y ago
From the comments: OP's project isn't a simple port. They wrote an original DOOM-like engine, from scratch, in assembly language. It only looks like DOOM because they're using DOOM textures.
afandian 11y ago
As a first-year University assembly project in 4 weeks, I'd be a bit more hesitant to judge.
nathancahill 11y ago
They wrote a raycasting engine in 9800 lines of assembly, running on a Pi, using Doom's textures. Is it Doom? No, but it's pretty darn impressive. Avoid gratuitous negativity.
- iaw 11y ago
  'avoid gratuitous negativity' is a thought we all need to keep in mind more.
  - knodi123 11y ago
    It's actually a rule of the site, https://news.ycombinator.com/newsguidelines.html https://news.ycombinator.com/newsguidelines.html
    - iaw 11y ago
      I think it should be a rule for real-life. I've found the less negative my thoughts, the better my general outlook on life.
- kcsongor 11y ago
  it's not raycasting though
  - neuro_sys 11y ago
    Right, it does not seem to be a raycasting algorithm, and the author mentions of it in the youtube comments that it's a "rasterization" meaning perspective projection of textured polygons.
    - kcsongor 11y ago
      Actually I'm the author, so yeah, that's right
- kbenson 11y ago
  Which is why they should have advertised something like that. This is related to Doom only in that the music and textures are the same. I'll forgive a little negativity if it comes from someone correcting a dishonestly titled article/submission.
  - lcswi 11y ago
    I doubt the music was played by the device, most probably it was dubbed in post processing.
- lcswi 11y ago
  What is gratuitous about what I said?
  - ZenoArrow 11y ago
    Just because it wasn't Doom doesn't mean it's without merit. This is a first year University project, written in small amount of assembly, with no supporting OS.
    - lcswi 11y ago
      I never questioned that
      - ZenoArrow 11y ago
        You implied it was a trivial achievement. Perhaps that wasn't your intention, perhaps you had intended to encourage, but if that's the case it wasn't obvious.
akhilcacharya 11y ago
This is their first year project...
ehaliewicz2 11y ago
It's a common misconception, but Doom uses a BSP-tree based renderer, not raycasting.

by lcswi 11y ago

JonathonW 11y ago

Looks like they have part of what made Doom unique (at the time)-- they've got height differences and non-perpendicular walls, but don't quite have the same lighting and texture mapping capability that Doom had. And the demo doesn't show whether or not they have Doom's dynamic capabilities (that let level builders make things like moving elevators). This looks like it's probably somewhere between Wolfenstein 3D and Doom in terms of engine features.

myth_buster 11y ago

From the comments: OP's project isn't a simple port. They wrote an original DOOM-like engine, from scratch, in assembly language. It only looks like DOOM because they're using DOOM textures.

afandian 11y ago

As a first-year University assembly project in 4 weeks, I'd be a bit more hesitant to judge.

nathancahill 11y ago

They wrote a raycasting engine in 9800 lines of assembly, running on a Pi, using Doom's textures. Is it Doom? No, but it's pretty darn impressive. Avoid gratuitous negativity.

iaw 11y ago
'avoid gratuitous negativity' is a thought we all need to keep in mind more.
- knodi123 11y ago
  It's actually a rule of the site, https://news.ycombinator.com/newsguidelines.html https://news.ycombinator.com/newsguidelines.html
  - iaw 11y ago
    I think it should be a rule for real-life. I've found the less negative my thoughts, the better my general outlook on life.
kcsongor 11y ago
it's not raycasting though
- neuro_sys 11y ago
  Right, it does not seem to be a raycasting algorithm, and the author mentions of it in the youtube comments that it's a "rasterization" meaning perspective projection of textured polygons.
  - kcsongor 11y ago
    Actually I'm the author, so yeah, that's right
kbenson 11y ago
Which is why they should have advertised something like that. This is related to Doom only in that the music and textures are the same. I'll forgive a little negativity if it comes from someone correcting a dishonestly titled article/submission.
- lcswi 11y ago
  I doubt the music was played by the device, most probably it was dubbed in post processing.
lcswi 11y ago
What is gratuitous about what I said?
- ZenoArrow 11y ago
  Just because it wasn't Doom doesn't mean it's without merit. This is a first year University project, written in small amount of assembly, with no supporting OS.
  - lcswi 11y ago
    I never questioned that
    - ZenoArrow 11y ago
      You implied it was a trivial achievement. Perhaps that wasn't your intention, perhaps you had intended to encourage, but if that's the case it wasn't obvious.

akhilcacharya 11y ago

This is their first year project...

ehaliewicz2 11y ago

It's a common misconception, but Doom uses a BSP-tree based renderer, not raycasting.