Super Mario World - Random Number Generation

How does random number generation work in Super Mario World? It's all explained right here.

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Learn more assembly instructions: Coming soon!

[KairuHakubi]

I always thought those birds looked unnaturally natural.

[nebularain]

I love this. Assembly is still the dark arts for many people, and it's often brushed over or dumbed down, so to have it explained this way is very helpful. More please!

[CoTeCiOtm]

11:54 What?!?!?! I am mindblown!! In all the years I have been playing this game, I have never, ever seen a 1-up come out by Kamek! I didn't even know that was possible!

[MrJibaku]

I’m too stupid to understand these videos, but still am entertained.

[jdaster]

Looking forward to this series! I'm loving how many TAS-ers / glitch-hunters are doing this sort of fully-fleshed out explanation of glitches and game mechanics these days!

Also, I love the "extended 1-up sound" in the intro.

[LeviathanRX]

My boss calls the RNG to determine whether or not I get a raise, it never calls back tho.

[marscaleb]

I'm honestly surprised how few calls the game uses for random numbers.

[DavidVitez]

This wasn't just a good gaming video, this was a fantastic computer science video. *Subscribed!* The breakdown of the assembly and pseudo-code functions was really good and I especially loved the graphs of the random outputs and how you highlighted the important parts of the data via color and animation.

[MellyMellouange]

That was a good video about SMW's RNG. Actually taught me which address to use in order to make the seed different ~

One of the sprites I made ticked the RNG every frame Mario is on the ground. Since it's a more dynamic element, it works well to make it less of a pattern.

[DukowskiX]

Man, the RNG use was really smart in this world, the blinking and bird movement implementation and was mindblowing. I am very sure the guy in charge of the bird movement made first the movement to be based on certain cycles and he hated it and made something that really resembled nature. Awesome video.

[timothyflisk]

13:23 What's the game in the middle. Is that a Super Mario Kart ROM hack?
Edit: The game is called Yoshi's Safari. It's a SNES Super Scope On-Rails Shooter.

[guntertv]

I didn't understand a thing, but it sounds smart, so i like it

[mubbees]

Thanks for the assembly code from the SMB3 rom! It's great to see deep explanations for this cool stuff!

[Darxide]

Taking topics I already know a lot about and still making the video interesting enough to get me to watch the entire thing. I love it. Keep it up.

[Coolfolder]

2:16 "Click here to learn more assembly instructions" The hover-over text says "Coming soon!" and I'm looking forward to it! I know i could probably find this information elsewhere online but I enjoy how you explain things :)

[ELVTechnology]

Your understanding into the details on this is mind blowing. I'm impressed!

[dixie_rekd]

no idea why youtube recommended this to me but this video is incredibly well made.

[eddievhfan]

BTW, if anyone was interested, the PHY and PLY instructions are to PusH the Y register onto the stack and PulL (pop) to pop the stack top into Y. This is the RNG subroutine saving the value in Y while it uses the register for other purposes, then restores the value of Y prior to going back to where the subroutine was called.

[spenceroximina]

"Asl = Arithmetic Shift Left"

Me: "Asl = Age Sex Location"

[curtreyes]

1:39 but first we need to talk about parallel universes