DOOM CAPTCHA • Hacker News Board

NooneAtAll3 wrote: post #191

computerdork wrote: post #156

Earlier quoted context omitted.

Another thing that makes it "easier" is this actually does support strafe, using Option + left and right arrow keys. Still not easy, but more doable:)

what's option? you mean ctrl? or alt?

Option is Alt on macOS.

Re: DOOM CAPTCHA

#235

Post by irusensei » Thu, Jan 02, 2025, 11:16 AM UTC

Really cool. I’m all for cool and interesting captchas if there has to be captchas at all. Aparently this one is made to be really hard uh? Gave me some wicked idea about a captcha where you have to survive a few seconds in a 2hu fight.

You can argue that’s bad for accessibility and you are correct but let me use this opportunity to talk about that hostile “put things into orbit” thing big I noticed Microsoft and X using. Recently I’ve installed windows 11 on a laptop and had to create an MS account for testing purposes. During the captcha phase the OS was installing drivers in the background so the resolution changed to 4k during the challenge but the UI didn’t scaled. With no way to reconfigure the display I had to strain my eyes to finish it and I suffer from miopia and astigmatism.

Re: DOOM CAPTCHA

#236

Post by Andrew_nenakhov » Thu, Jan 02, 2025, 12:09 PM UTC

How am I expected to kill monsters if I can't strafe, goddamit?!

Re: DOOM CAPTCHA

#237

Post by [deleted] » Thu, Jan 02, 2025, 12:11 PM UTC

Andrew_nenakhov wrote: post #236

How am I expected to kill monsters if I can't strafe, goddamit?!

[deleted]

Re: DOOM CAPTCHA

#238

Post by ceautery » Thu, Jan 02, 2025, 12:36 PM UTC

Andrew_nenakhov wrote: post #236

How am I expected to kill monsters if I can't strafe, goddamit?!

Comma and period to strafe.

Re: DOOM CAPTCHA

#239

Post by slightwinder » Thu, Jan 02, 2025, 12:55 PM UTC

I hate it! Good CAPTCHA.

Re: DOOM CAPTCHA

#240

Post by DaiPlusPlus » Thu, Jan 02, 2025, 1:18 PM UTC

bcoates wrote: post #138

Maxatar wrote: post #100

Earlier quoted context omitted.

Perhaps this implementation works that way, but in principle if the game is strictly determined based on a random seed and player input, then the server can verify that the player's inputs do in fact result in the correct outcome.

Doom doesn't even have a (variable) random seed, it's deterministic like an NES game and has built-in record/playback that's just a frame by frame list of player moves.

So have the client record and send the demo recording.

…hang on, this is starting to feel like Elliptic Curve cryptography: it’s trivial to prove a demo file is a “solution” to a random-seeded Doom map, but nontrivial to work-backwards to generate a demo-recording.