I Played DOOM Using Only Spinda Patterns

Just letting you know, the touhou fanbase isn't exactly sane. There was a 50% chance they might have picked each frame by hand. You got lucky.

Doom minimun requirements: _Have a screen(optional) _Have a CPU(optional) _Human player(optional, someone teached a rat how to play) _Being real(also optional, apparently)

Based on the title, I thought this was gonna be something like each spinda pattern corresponding with a string of numbers to turn into inputs to eventually beat a level of doom using the right series of spindas. Needless to say I was incorrect in the best way possible.

"Bad Apple" is the non-interactive equivalent of "Can it run Doom?" It's a music video based on the Touhou video game series, and it is entirely black-and-white. Which means that any kind of display or visualization that can distinguish between two colors (which is to say, all of them) can be used to display Bad Apple. The Touhou community recreated Bad Apple in r/place - just random people placing pixels onto a communal grid recreated the music video with a shocking amount of accuracy once the replay was sped up.

Missed opportunity at 5:40 to refer to it as a “spin-database”

saying the words "Please enjoy" before showing me one of the most nightmarish creations to have ever existed. it's almost cruel

The best way to play doom, when it takes literal weeks to play 10 seconds.

I wonder how Spinda's designer would feel about this. All of the chaos that this simple spot algorithm unleashed on something with a 360 BST.

"Spinda of best fit" was not something I thought I would hear today, but I'm here for it!

Doom and Bad Apple are both rules of the internet, they go hand in hand. If it has a screen; it can play doom If it can exist in at least two states, it can play bad apple. Bad Apple is a boss theme from TouHou and got a remix on a CD that was released some time after the game it was featured it came out. This remix got used in a 3D animated music video that was quite ahead of its time for an indie animator making in his free time. And since that video took the internet by storm, a lot of people sought to recreated it on whatever they could. Including Minecraft Sheep, Rubik's Cubes, Super Mario 64, RGB keyboards, and many many more.

This "optional homework" challenge reminds me so much of this video from a channel called Stand-up Maths. Basically, he tried to find the perfect set of five five-letter words to use for Wordle, all of which had unique letters from each other. His proof-of-concept code took 32 days to run... and after submitting the idea to his viewer base, they got it down to less than 3.5 milliseconds. Have fun, Mr. adef :)

Now I will play doom on a cell wall

Using a genetic algorithm to solve this problem is wild and almost certainly something Jakob did as a learning exercise. A realtime Spinda matrix screen (never thought I'd write that in my life but here we are) is definitely possible using image masking and bit manipulation, since the x and y coordinates of the dots are made by splitting the 32bit PID into four 8bit numbers. I might take a stab at this myself. Thank you for another incredible video on a topic I would never expect

When you asked if I had a favourite Spinda pattern I, like a normal person of course, thought "why yes, it's the one where the dots cover its eyes" SO IMAGINE MY SURPRISE

Congrats on pregananant

perfect timing, I was JUST telling someone about my personal favourite way I've seen someone play DOOM (on gut bacteria)!

I'll propose an algorithm that would be much faster. The reason the algorithm takes so long is because you actually care about tracking the PID of the Spinda, which leads you to generating a random Spinda and checking its fit. You ended up using enough Spinda faces to consider them "pixels" on a screen anyway, so you can skip all of that computation by just deciding where, within the possible bounds of each Spinda, you should draw the 4 dots, and then place them there, without bothering to know what the PID that would produce that Spinda is. For example, you could take the black-and-white frame of DOOM, divide it into a sub-image for each Spinda, then divide each sub image into the 4 bounded squares that each dot can occur, and simply find the center of the "red" pixels, and place the dot centered there. The computational complexity of rendering a 40x30 Spinda image would therefore be 4800 times the complexity of whatever algorithm you use to determine the location of the dot. A simple center-of-mass algorithm is O(n) with respect to the number of pixels, so that works out to being O(n) with respect to the total number of pixels in the original image. A rendering algorithm that is O(n) with respect to the number of pixels on the screen is actually insanely fast for a video game. You should reach real-time rendering speed with no issues. You might even have enough computation left to reverse-engineer the PID of each Spinda you just rendered, if you really want to.

Don't mess with Touhou fans, all of us are insane in at least one fashion. More seriously, this is super cool!

RIP adef's power bill. Here's to a real one carrying the weight of the world on their back (also really really cool video)

This is insane, you and Jakob are legends for this. Now we just need a billonare with a supercomputer gaming laptop to do it in real-time.