I had a feeling that, at some point, SOMEONE found it out of all the dedicated SM64 TASers out there.
Can somebody explain what do you guys mean with RNG Address? How can a number tell you the RNG?
I pretty much suck with RNG stuff, so forgive my n00bness.
Basically when a game wants to randomize something (an enemy pattern, the damage that an attack will deal, etc...) it checks the value of a RAM address and acts differently depending on the value. Let's say there's 256 possible values, if the value is 17 you will get a critical hit, and if it's 58 you'll miss (this is a quite simplified example obviously)
I problably made mistakes, sorry for my bad English, I'm French :v
I don’t think anyone’s found the RNG address for SM64.
yes we have
OK, sorry for the misinformation. :P
I don’t recall anyone ever doing anything related to luck manipulation in SM64, so that’s why I said it.
@Plush: the RNG is just a mathematical formula that gives a number, the RNG address shows that number as its value. Depending on the value different things happen, like Eszik said above; but all the RNGs I’ve come across are 4 bytes in size, so there are far more than 256 possibilities (4 bytes are 4294967296 possibilities).
Basically when a game wants to randomize something (an enemy pattern, the damage that an attack will deal, etc...) it checks the value of a RAM address and acts differently depending on the value. Let's say there's 256 possible values, if the value is 17 you will get a critical hit, and if it's 58 you'll miss (this is a quite simplified example obviously)
ALAKTORN wrote:
@Plush: the RNG is just a mathematical formula that gives a number, the RNG address shows that number as its value. Depending on the value different things happen, like Eszik said above; but all the RNGs I’ve come across are 4 bytes in size, so there are far more than 256 possibilities (4 bytes are 4294967296 possibilities).
Yeah, I realized that now. Thank you guys~
ALAKTORN wrote:
I don’t recall anyone ever doing anything related to luck manipulation in SM64, so that’s why I said it.
Actually there's a mediocre quantity of RNG in it. Notice some enemies' movements, coins' trajectory when spawning from an enemy/box or for example Tick Tock Clock Crazy movements when entering the "painting" at 6.
There isn't one universal RNG for every game, there are different ways the game can determine an action out of the random number.
A few examples:
1. Odd number means attack misses, even number means hit
2. A table with actions (1=hit , 2=hit, 3=miss, 4 hit, ...)
3. It compares to characters stats (if RNG > stat then hit else miss (mostly used in RPG))
Plush wrote:
For example to check if a 100% attack misses in first gen, you see if the address says "256" (It's 1/256) (or "1", I don't know)
If you have a specific value in a one byte address it would be a 1/256 chance to get that value. The determined action however has not necessary a 1/256 chance, if the game uses an action table for example. Depending on the RNG this not always true.
For example to check if a 100% attack misses in first gen, you see if the address says "256" (It's 1/256) (or "1", I don't know)
[…] Depending on the RNG this not always true.
That’s why he brought up a specific example (Pokémon) and didn’t generalize.
I don’t know where you got that quote from but I’d like to answer it myself: just because the chance is 1/256 it doesn’t mean that the value necessary for it to happen is either 0 (not 1) or 255 (not 256, those are the possibilities, which include the number 0). Also another thing I’d like to mention is that: I highly doubt the chance is actually precisely 1/256… no matter the RNG, it’s probably gonna be biased some way or another, so even if it needs to hit 1 precise number out of 256, the chance could be all over the place depending on the formula with which the RNG creates those numbers.
Edit: for some reason the font in my post is really big, weird.
Edit2: thanks Patashu.
For example to check if a 100% attack misses in first gen, you see if the address says "256" (It's 1/256) (or "1", I don't know)
[…] Depending on the RNG this not always true.
That’s why he brought up a specific example (Pokémon) and didn’t generalize.
I don’t know where you got that quote from but I’d like to answer it myself: just because the chance is 1/256 it doesn’t mean that the value necessary for it to happen is either 0 (not 1) or 255 (not 256, those are the possibilities, which include the number 0). Also another thing I’d like to mention is that: I highly doubt the chance is actually precisely 1/256… no matter the RNG, it’s probably gonna be biased some way or another, so even if it needs to hit 1 precise number out of 256, the chance could be all over the place depending on the formula with which the RNG creates those numbers.
Edit: for some reason the font in my post is really big, weird.
I pretty much understand what you're saying but I can't really explain it lol
Umh, just wondering, what's that number between 1 and 256 (Or 0 and 255, idk) that makes you miss a 100% attack?
Doesn’t look like you understood lol. It’s 0 to 255 because 256 is the number of possibilities but the values start at 0. You can have −128 to 127 too which again is 256 possible values. As for the question I have no idea because I don’t TAS Pokémon, and it actually makes me wonder how it works because there’s no way the RNG is just 1 byte. I guess the formula might have a modulo 256 to truncate the number at the end? So all sorts of values could give you a miss… all the values that with modulo 256 would give you 0, I’d imagine. My god I’m completely guessing how the RNG of a game I don’t know works, here…
I’ve started to confuse myself.
Uh....what exactly are the addresses for this game? I tried looking up the game resource page, and ram watch pages, but SM64 doesn't seem to have any addresses listed. Can anyone please post them?
Uh....what exactly are the addresses for this game? I tried looking up the game resource page, and ram watch pages, but SM64 doesn't seem to have any addresses listed. Can anyone please post them?
For Super Mario 64 (U) [!]
Moving Angle: 00C26BFC Unsigned Short
Facing Angle: 00C26C1C Unsigned Short
X Position: 00C26C2C Float
Z Position: 00C26C30 Float
Y Position: 00C26C34 Float
Vertical Speed: 00C26C3C Float
Horizontal Speed: 00C26C44 Float
Stars: 00C26C98 Unsigned Short
Lives: 00C26C9E Short
Coins: 00C26CE0 Unsigned Short
Health: 00C26C9D Byte
BitFS or BitS Bowser's Speed: 00C28FC0 Float
BitDW Bowser's Speed: 00C29940
Talking about RAM Addresses, some people like me absolutely need the Secret Speed addresses. (That one that gets manifested if you press Z)
You guys have to explain me how in the 120 stars TAS submission you timed "Mystery Of The Monkey Cage".
With "you guys" I, ofc, mean Nahoc/MKDasher.
My guess is from first visible non-totally-white frame to first totally-black frame, but I could be wrong. Why do you ask?
If my memory serves, that's the star that's collected as Mario hits the bottom-barrier of the stage, killing him. The star is collected but we skip the collection animation, the usual level-exit, and the save/continue screen (as he comes out of the painting as if he died).
As for the answer, I wouldn't use that for a timing. Collecting the star normally would be faster for single-star timing, but this little niche is a few seconds faster solely for skipping the star-collection screens.
I was thinking about convincing you guys updating the current single-star timing strat. IMO best thing would be ending it on first black screen, but I realize it's a bit utopistic since Mario 64 is nowadays TASed by few people.
Tell me what you think. I could make the job of re-timing all the stars for you if necessary.
Oh and first frame Mario facing camera could be annoying when there's a wall in-between, while first frame black is something you can always notice no matter what (This started because there was a star behind a wall and I BLJd through it and I couldn't time it because that hack ROM's level camera script sucked a lot)
