How Minecraft Places Biomes

Biome Gen for absolute beginners. Although you should definitely generally know how datapacks work.
Have more questions? Join the Discord! / discord
Get the example datapack here - drive.google.c...
Some useful tools by the legendary Misode, which will certainly help anyone looking to put this stuff together:
misode.github....
misode.github....
Also uhm I definitely didn't advertise anything in this video, no way www.planetmine...

[@BrackenStrike]

Haha, yes! Join us in the glorious worldgen community! We are a completely normal and sane group of people.

[@EliasJorden]

Lol

[@viniciusschadeck4992]

@@EliasJorden i did only generate some islands to my roguelike lite kinda not rogue at all game, inspired by vampire survivors, and when i was creating my generator, was insanely cool, but hard to transmite the information... i drop a noise function to generate noise, soo, i make a border to put smooth transition to normal noise and forced water on the borders, because my map is a island, soo, water arround, players not enter water, everthing works fine, right? Yeaap, after that i had to create start point, and make a path between points, i used a random start point path, random end point path (that is not exactly random, but i put in the comment to simplify) them using the seed, i generate a second, third and a lot of sub seeds, use those to generate extra noise, use the noises to add more spicy to path generated, and kinda biomes for now is just mountain beach plain, i want to create florest, but my game is not fully prepared to handle florest already, the monsters A* function kinda sucks right now, but i'am impressed by the quadtree i made, really works and dropped a lot of lagging when dealing with tons of entties, oohhh i did mostly by my own hands in javascript. I had some issues i guess, why not simplify shit and use a engine? Not know LOL

[@hunnyjar8937]

Jokes on you, I LOVE overly niche communities run by people with too much dedication

[@_Thymelessx]

(lie)

[@aarshir9500]

We have: - 2-dozen-tall cacti - supercomputers rivaling United States secret service levels of power - a gestalt network connecting our computers to calculate more wacky features in Minecraft worlds

[@bolinhodoespaco]

was about to sleep but i guess one more video is ok

[@droidplays08]

Do more tutorial on worldgen and biome, it is very interesting. Love it very much, keep it up!

[@James_AAF]

Bump

[@Lessinath]

Calling it a bit of an art is so true, lmao. I wanted to make a biome datapack where I added a few custom biomes (volcanoes, salt flats, floating islands, ect) and got so annoyed at this stuff I ended up writing a mod that totally reworks terrain gen instead, lol.

[@Lavorre]

I would love to hear about density functions! Ive always wanted to make a superflat datapack that rewrites progression with custom structures (like getting wood, iron, nether, etc.)

[@evilgwenn3232]

I am pretty sure that it can be visualized using a cube in a cube, the first big cube consists of 'continentalness', 'erosion' and 'Peak and Valley' this divides it in 16 cases that each consist of 'temperature', 'humidity' and 'weirdness', depth is left out, but that only matters for the underground biomes which can be explained way simpler. I have everything to make it, except the skill to visualize it properly.

[@mikeholczer]

This was great. There is so little world gen content out there, so please keep it coming.

[@godofgrains]

awesome video, conure! you might just be the first one on youtube who properly explains this and that definitely has to do with how insane worldgen is. would love to see you cover more parts of worldgen in the future

[@alexmorch4917]

Would love a density function video. Also, i think offset is used for "rare" biomes. Like instead of generating a jungle, a certain offset might generate a bamboo jungle, or a mooshroom island instead of an ocean, or an amplified taiga or whatever its called.

[@Pacca64]

I usually messed around with misode until the preview gave me something nice. While it was fine for general use, making things like rivers or mushroom islands were completely mysterious to me, and any time I tryed I'd just end up with the biomes overlapping and overriding each other. Great explanation, love it :D

[@haunted_magma2073]

Wow, that stuff is very interesting! My brain has immediately started ticking over with ideas for where i'd put each biome on the graph. i visualized the 6 dimensions by starting with the usual 3 lines, imagining them inside a sphere & adding 3 more lines each equal distances away from the others.

[@BryanLu0]

Each additional line should form a 90° angle with all other lines. Higher dimensions are simply not comprehensible

[@BG03_]

This is so awesome to learn about, especially considering I've always wanted to be able to learn to reproduce Minecraft terrain generation in a Python script, and this gets me one step further along. Thank you!

[@Xpoxy]

One way to graph 6 dimensions would be to split it into groups of 2 3 dimensional graphs.

[@conure512]

That's kinda what i meant toward the end when i was talking about making a "box of boxes", a giant 3d graph of smaller 3d graphs would give you 6 total

[@carlislepoe5966]

Very helpful video! I would definitely be interested in seeing more videos about world generation!

[@bruex2277]

9:12 I can't visualize it in my head but, you could represent it with various groups of groups of groups of cubes The same way a cube can be a group of squares

[@FoxSlyme]

I will definitely watch more about the rest of the fields in that file!

[@thepiday9656]

Very good video. I'd LOVE a density function one or something that further explains how to get the result you want with the final density

[@Huntracony]

I'd love to learn more about this! What happens when there's an overlap or hole in the regions? Also really curious how Minecraft ensures a smooth transition between biomes despite the density function being defined per biome, though that might be out of the scope of datapack videos. Also, how do rivers work?

[@Huntracony]

I see you answered two of these already, I should've scrolled further, thanks!

[@polarknight5376]

Even as someone that just plays minecraft this is really helpful stuff to know.

[@evilgwenn3232]

Just as a little exercise for myself I'll try guessing river parameters: -Temp: rivers are in hot, temperate and cold biomes but in freezing biomes they become frozen rivers so it would be like [-1, 2] -Continental: there are no rivers in oceans so [0, 2] with negative being oceanic -Humidity: there are no rivers in (mangrove) swamps, but there are in jungles and dryness isn't a problem so [-2, 1] Those 3 were easy, the other 3 I have little idea but some observations: -I don't know how to interpret 'depth' as rivers do only spawn when the surface level is around 62, but the biome continues infinitely up and down unless interrupted by for example dripstone cave -I don't think rivers are dependent on erosion, but again I don't really know what erosion does -rivers are thin so they occupy a small range in one of the remaining variables -that variable is also responsible for the difference between flowerforest/sunflower plains, birch forest/old growth birch forest, forest/plains, old growth spruce/pine taiga, jungle/sparse jungle and probably some more so "forestness" is how I interpret it for now, but I don't think it's depth or erosion so weirdness remains I think I chose one of the worst biomes to try guessing.

[@evilgwenn3232]

After some testing: rivers are dependent on weirdness and are between about -0.04 and 0.04, depth is just how relatively deep you are compared to the surface which is aprox 0.00 so I think that it's only used for undergroung biomes and it explained how an ancient city mostly spawnes under mountains, it probably only spawnes at a depth value of -1 or something. Erosion I still don't really get though.

[@jonasgajdosikas1125]

the most likely reason using a different file results in a different noise is that the file is hashed and then used in the process of offsetting the noise function. and if the offset doesn't easily tile with the domain of the noise function you'll likely get cery different noise functions even with minuscule changes in the file name

[@wittik-0]

I just hate that the noise parameters use words that are related to actual real world geolocation instead of just using a variable name. When trying to figure this out only on I was so confused. also density functions would be super awesome and helpful

[@RavenRavel]

Commenting to also represent the completely normal and sane group of people that do worldgen.

[@hhff8534]

would love to see more! i was able to figure out features and biomes myself (the feature order error drove me crazy) but the density functions and actual terrain shape are too complex

[@Run2Seeun]

I actually didn't know it was possible to display the temperature value at the current position of the player. Cool stuff. I wonder if data packs can check this value, similar to light level and game time

[@conure512]

I don't think there is a way to do this, it would be really cool if they added predicates for it haha

[@alexmorch4917]

Create a custom dimension whose biome placement only uses temperature, create many biomes for each of the temperature values you want to check, then check the biome in the custom dimension! Maybe.

[@TheRaptorsClaw]

I wonder if it's possible to do something like this but tied to the x coordinate? Like, at x=0 it's always hot, but as the x coord gets further from zero, the temperature gets lower until it reaches -2 at say x=+-10000 or something. Then use noise for the other dimensions and end up with something vaguely like earth with hot biomes at the equator and cold ones at the edge of the world. Taking this a step further, i wonder how ocean biomes differ and if humidity is a function one can tie to proximity to the nearest ocean biome. And yet another step further, if it can be modified by if a mountain is between it and the nearest ocean, it lowers the humidity further. As someone who's studied climate science a lot, the potential applications of this to reflect real life climatology are a really tempting avenue to explore, and while I don't have the basis in coding it would be incredibly cool to see a game like Minecraft used as a basis for a (semi realistic) climate model!

[@achiyarhein7963]

pls explain how to make custom ores generate in a world using datapacks and how to create the new biomes

[@susangoaway]

So, about the noise maps... Is it thereotically possible to just have a south-north axis temperature distribution, meaning the further north you go the colder it gets and vice versa? Basically emulating the biome gen of VIntage Story.

[@conure512]

You'd need a density function that can return the Z coordinate directly. While it's really easy to do this for Y, it's very, VERY difficult for X and Z. A clean way of doing this is viewed as one of the holy grails of worldgen. They frequently talk about this kinda thing in the Stardust Labs discord ( discord.gg/XpP6N4rpQk ) if you wanna check that out.

[@evilonesw5681]

Great vid

[@SlimyRedstone]

Are you really making datapacks using only the basic microsoft notepad ?! Why not use notepad++ or VSCode or anything else ? I know I can't write JSON files without "bracket folding". Nice video btw, as always ;)

[@sutsuj6437]

What happens if there isn't a valid biome found that satisfy all the range constraints? Is there a fallback biome? Once you have 6 dimensions, I would imagine, that these kinds of invalid biomes, would pop up often.

[@conure512]

I meant to talk about this but just kinda forgot - it picks the closest one. It's also entirely possible to put in those parameters as single values rather than ranges, and in that case it plays more of a "nearest-neighbor" type of game. This is actually how the Nether works - the biomes specify single values for their parameters, and also only 4 of the 6 parameters are used.

[@Paint_The_Future]

Can datapack authors add their own criteria like weirdness?

[@conure512]

No, the 6 are hardcoded. But you can customize how those 6 behave as much as you want using density functions, and you can use as many (or few) of them as you want, so they can basically be custom parameters. You just can't add a 7th one.

[@3141minecraft]

But the name of those 6 things arbituary. For example: you can say desert is humid in those but it won't make desert generate with more water. You can say ocean is not humid but that will not make oceans generate without water. You can say frozen plains is hot but it will still generate with snow. Also, some nether biomes are considered humid in those but have you ever seen water generate naturally in nether? You get what I mean, right?

[@naradoxy]

what happens if two biomes overlap in the file? I imagine generation would just fail or it would prioritize one biome based on the order they were put it. am I correct?

[@conure512]

Funny story, this happened in vanilla once. Mojang accidentally did this, and published it. I believe the conflict was between Lush Caves and Dripstone Caves. If you found a region of the world that was occupied by both biomes in parameter space, it would generate this super glitchy terrain where the biomes fought each other at chunk boundaries. It was super rare, which is why it took so long for anyone to realize what had happened.

[@FungIsSquish]

I havnt enjoyed anything about worldgen since 1.18 ☹️ I wish it was possible to replicate the old system

[@grayishcolors]

I can cheat. I use colors for more dimensions so I can get 3 more than the typical 3 for a total of six. Now only in my head can I see the color inside a cube so idk how you would replicate that in video without using transparencies & like floating particles in jelly. Also the color thing only works if the higher dimensional context is static because I haven’t got the slightest clue how you rotate a color around an axis xD

[@samstade5598]

Ain't no way you use note pad for json files...

[@Beyhammer1]

have you used the real minecraft particle system

[@Beyhammer1]

text displays

[@ortherner]

kool video

[@GrannyGamer1]

Bedrock is purgatory 😢

[@dvirovOfficial]

The most important guide so far

[@ukyoize]

Switch to notepad++

[@Nuniixo]

The only problem is this makes worlds so, so predictable.

[@miladmoro88]

One word answer: Perlin Noise

[@koolkrafter5]

That's 2 words

[@sutsuj6437]

No no, it is actually "SIX Perlin Noise functions" and thats 4 words

[@miladmoro88]

@@koolkrafter5 or one phrase to be exact