why you can't get more than 4 longbars in a row

[@eee_inn2658]

I had no idea it was this complicated. I thought it was only "roll a random piece, if it's a repeat reroll once." Crazy that there's so much more to it and it explains some of the weird statistical behaviour I notice sometimes. Good video.

[@Snow_Fire_Flame]

If someone was doing an implementation of NES Tetris on modern hardware, that IS pretty much the algorithm intended. I guess you could keep the mod 8 check where there's an unconditional 1/8 chance of reroll to keep repeats slightly more frequent, but that's just a coding oddity. The bit that makes it funky is that "get a random value" on modern hardware is easy, but on a NES you're stuck with stuff like linear shift registers which means the random component isn't as random as we'd like. But that's really the cause here IMO, NES "RNG" style.

[@gabrielbarrantes6946]

Imagine being so good that you can predict in real time.

[@zodcyborg]

well I assume AI learns it ...

[@iwersonsch5131]

In SM64, a coin with high vertical speed (>75th percentile) and horizontal speed (>87.5th percentile) cannot spawn within 4 of the 8 angular octants

[@Pleeze]

Clear enunciation and explanation and very interesting video. :)

[@EebstertheGreat]

4:01 Doesn't every piece spawn with a canonical orientation? Can you force a piece to spawn in with a different orientation? If not, I don't understand how this is different from just having 7 different IDs for the 7 different tetrominoes.

[@hydrantdude3642]

If you hack the game, yeah you can change the orientation in which it spawns. Each orientation has its own ID, rather than having a piece ID and an orientation ID.

[@BlindingWulf]

You turned into a math channel :p

[@iwersonsch5131]

What about an "anydrought" mode where instead of a 1/28 chance of repeating the last piece, there is a 1/28 chance of reintroducing the longest-ago piece

[@mythicsword8169]

That's super interesting

[@MudakTheMultiplier]

I'm curious if this gets cross referenced with the actual possible outputs of the RNG table if there's more information to be learned, like yeah O's could hypothetically always result in a repeat, but is there a seed that will even do that?

[@hydrantdude3642]

Anything that is theoretically possible is also practically possible in this game because you can pause and wait for the PRNG to be the correct number. Here's a tas of 1400 O pieces: kzbin.info/www/bejne/Y5DUe5iZbpV_h5o

[@MudakTheMultiplier]

@@hydrantdude3642 Interesting. Is pausing legal in a tournament setting? (Not that that would ever actually result in an advantage)

[@hydrantdude3642]

tournament? no. high score attempts? the world record had pauses in it once (the first time eric got wr at 3ish million) but people hated it and I don't think you can get away with it anymore.

[@QwDragon]

Don't see the link.

[@hydrantdude3642]

i forgor it's there now