I am encountering a bug in which biomes have very circly, smooth and artificial looking biome borders. They do not blend between each other and do not end nicely in rivers as versions before (you know, like the rivers were mostly borders between biomes). Also there are other glitches like specs of nearby biomes in other biomes. I can't describe it properly so i will include a png of a map i created with a mod "Xaero's world map"
It is worth noting that the border between biome and-sub biome is very nice, like it should be. For example in the image i provided we can see jungle and sparse jungle having very nice river borders and transition is very natural. It is when the climate completely changes (like temperature and wetness) that the bugged border occurs.
I specificaly always play on Large biomes, because i find default biomes lacking but i dont know if thats relevant, seeing as largebiomes are essentialy default biome size times 8 if i remember correctly
I originally tought that the problem is my side, because i have modded game, more specificaly
Fabric
Fabric API
Sodium
Iris Shaders
Xaero's Worldmap
Xaero's Minimap
But i also tried the same seed without any mods and the result were the same. I even tried generating the seed with forge instead of fabric and its respective version of xaero's map but the results were the same.
I generated and tested many more seeds and every world i create has the same problem, one time i had snowy tundra almost in an ideal circle shape few thousands blocks in diameter
I almost 99% sure it is now 1.18. worldgen problem, I tried uninstaling minecraft, clearing everything and installing again fresh, nothing helps
i tried googling the issue, seeking forums and such, but i am irking for an answer as i found nothing.
Has anyone encountered this ? On the side note i dont like the new generator at all, the rivers are deep and wide and do not cut off unexpectedly but there are much too many of them and the world is many times elevated and looks like amplified. Villages always generate on slopes or in the middle of a river and generator does not look for a flat surface at all. I do not know if i should submit a bug and even how to do it to be honest.
If I had to guess, they are using Perlin noise to generate the biome map without any sort of smoothing/randomization applied between biome transitions, except perhaps as a final step (the final resolution of the biome generator is 4x4 blocks, which is then "fuzzed" out when interpolating to a single block per unit, as when determining biome colors, rainfall, etc. Since 1.15 chunks don't even save this final data, only the 4x4 resolution version, which also now applies vertically), and even then the resolution is way too coarse, unless the biome map is initially generated at a much smaller scale and zoomed out many times but that doesn't seem to be the case; the old biome generator had multiple zoom stages after adding each layer which would randomly choose a biome when they differed when interpolating between two points (this actually entirely lead to the complex biome shapes; the game initially placed them in a simple grid with one biome per cell and all the randomness during each zoom stage lead to the rest, without it you literally get perfectly square biomes, as in this example from my own mod's "debug biomes" mode. The zoom factor was also very high, a factor of 256 times from the addition of biomes to the final biome map, equivalent to a total of 8 stages of "fuzzing").
I'm not sure how they generate rivers either but if I had to guess they greatly increased their depth, not unlike what I've done in my own mod, except they don't actually get any deeper than in vanilla since I only allow oceans to go below y=56 (7 blocks deep), with special smoothing applied to avoid vertical cliffs to the seafloor, and I added "riverbank" biomes to smooth out height variations; only a couple biomes are allowed to override rivers (cause them to dry up; it is not very visible in the first example but rivers in Rocky Mountains replaces the biome with its next lower stage, forming valleys when they cut through the middle):
english is not my first language, so i don't much understand the technical analysys you briliantly provided here, but overall i think i understand what you say. Biome generator zoomed out with every step of biome creation that lead to semi-random biome border noise, which is not implemented in 1.18.
Anyways i sure hope so they are aware of it and actively working on fixing it, because, frankly, i can't play minecraft until this is resolved because i don't want my worlds to look like this.
I am encountering a bug in which biomes have very circly, smooth and artificial looking biome borders. They do not blend between each other and do not end nicely in rivers as versions before (you know, like the rivers were mostly borders between biomes). Also there are other glitches like specs of nearby biomes in other biomes. I can't describe it properly so i will include a png of a map i created with a mod "Xaero's world map"
https://ibb.co/CWss3W0
It is worth noting that the border between biome and-sub biome is very nice, like it should be. For example in the image i provided we can see jungle and sparse jungle having very nice river borders and transition is very natural. It is when the climate completely changes (like temperature and wetness) that the bugged border occurs.
I specificaly always play on Large biomes, because i find default biomes lacking but i dont know if thats relevant, seeing as largebiomes are essentialy default biome size times 8 if i remember correctly
I originally tought that the problem is my side, because i have modded game, more specificaly
Fabric
Fabric API
Sodium
Iris Shaders
Xaero's Worldmap
Xaero's Minimap
But i also tried the same seed without any mods and the result were the same. I even tried generating the seed with forge instead of fabric and its respective version of xaero's map but the results were the same.
I generated and tested many more seeds and every world i create has the same problem, one time i had snowy tundra almost in an ideal circle shape few thousands blocks in diameter
I almost 99% sure it is now 1.18. worldgen problem, I tried uninstaling minecraft, clearing everything and installing again fresh, nothing helps
i tried googling the issue, seeking forums and such, but i am irking for an answer as i found nothing.
Has anyone encountered this ? On the side note i dont like the new generator at all, the rivers are deep and wide and do not cut off unexpectedly but there are much too many of them and the world is many times elevated and looks like amplified. Villages always generate on slopes or in the middle of a river and generator does not look for a flat surface at all. I do not know if i should submit a bug and even how to do it to be honest.
I found a report of the bug tracker that mentions this, currently marked as unresolved so it seems that the developers have acknowledged it:
MC-241175 Biome borders are too smooth
If I had to guess, they are using Perlin noise to generate the biome map without any sort of smoothing/randomization applied between biome transitions, except perhaps as a final step (the final resolution of the biome generator is 4x4 blocks, which is then "fuzzed" out when interpolating to a single block per unit, as when determining biome colors, rainfall, etc. Since 1.15 chunks don't even save this final data, only the 4x4 resolution version, which also now applies vertically), and even then the resolution is way too coarse, unless the biome map is initially generated at a much smaller scale and zoomed out many times but that doesn't seem to be the case; the old biome generator had multiple zoom stages after adding each layer which would randomly choose a biome when they differed when interpolating between two points (this actually entirely lead to the complex biome shapes; the game initially placed them in a simple grid with one biome per cell and all the randomness during each zoom stage lead to the rest, without it you literally get perfectly square biomes, as in this example from my own mod's "debug biomes" mode. The zoom factor was also very high, a factor of 256 times from the addition of biomes to the final biome map, equivalent to a total of 8 stages of "fuzzing").
I'm not sure how they generate rivers either but if I had to guess they greatly increased their depth, not unlike what I've done in my own mod, except they don't actually get any deeper than in vanilla since I only allow oceans to go below y=56 (7 blocks deep), with special smoothing applied to avoid vertical cliffs to the seafloor, and I added "riverbank" biomes to smooth out height variations; only a couple biomes are allowed to override rivers (cause them to dry up; it is not very visible in the first example but rivers in Rocky Mountains replaces the biome with its next lower stage, forming valleys when they cut through the middle):
TheMasterCaver's First World - possibly the most caved-out world in Minecraft history - includes world download.
TheMasterCaver's World - my own version of Minecraft largely based on my views of how the game should have evolved since 1.6.4.
Why do I still play in 1.6.4?
english is not my first language, so i don't much understand the technical analysys you briliantly provided here, but overall i think i understand what you say. Biome generator zoomed out with every step of biome creation that lead to semi-random biome border noise, which is not implemented in 1.18.
Anyways i sure hope so they are aware of it and actively working on fixing it, because, frankly, i can't play minecraft until this is resolved because i don't want my worlds to look like this.