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Java Edition 21w06a

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Minecraft 21w06a
Edition Java Edition
Release date February 10, 2021
Type Snapshot
Snapshot for 1.17
Downloads Client (.json)
Server
Obfuscation maps Client
Server
Protocol version  dec1073741838
 hex4000000E
Data version 2694
Resource pack format 7
Data pack format 7
Minimum Java version Java SE 8
β—„β—„  1.16.5 1.17 1.17.1 β–Ίβ–Ί

β—„  21w05b

21w06a

21w07a β–Ί

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21w06a is the ninth snapshot for Java Edition 1.17, released on February 10, 2021,[1] which adds new cave generation and increased the build height limit to 384.

Worlds created prior to this snapshot or after 21w15a cannot be loaded and edited in this version without NBT editors, due to there being no upgrade path towards the expanded height limits in this snapshot. However, it is possible to use Combat Test snapshot worlds due to the data version exceeding that of the 1.17 snapshots.

Additions

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World generation

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Caves

  • Added new noise caves, which come in two types: "spaghetti" and "cheese" caves.
  • Added flooded aquifer caves.
  • The old "carver" cave generation still generates, combining with the new caves.

πŸ‘ Image
Spaghetti caves

  • Long, narrow caves.
  • Utilize noise generators for generation.
  • Can form cave entrances when they intersect with land.

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Cheese caves

  • Utilize noise generators for generation.
  • Often form caverns of various sizes.
  • Can form cave entrances when they intersect with land.

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Aquifers

  • Used to generate bodies of water in new caves.
  • Currently only used below Y=31, meaning any noise caves between Y=31 and Y=63 are flooded with water. This is fixed in Java Edition 1.18 Experimental Snapshot 1.
  • Magma blocks may generate at the bottom of these new water bodies, creating downward bubble columns.
  • Replaces the old underwater cave carvers/canyons.
  • Fish spawn in aquifers if it is under an ocean or river.

General

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Data packs

  • Added [Boolean] aquifers_enabled and [Boolean] noise_caves_enabled to worldgen/noise_settings/*.json.

Changes

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Blocks

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Big dripleaf

  • No longer stops tilting while sneaking on, jumping on, or even jumping off it.
  • Now tilts quicker.
  • Now tilts when hit with a projectile, instead of being broken.
  • Can now be used with redstone.
    • Powering a dripleaf now prevents it from tilting down (except for projectiles).
    • Powering an already tilted dripleaf tilts it back up.
    • Unpowering a dripleaf down allows it to tilt down again.

Hanging roots

  • Texture has been changed.

Lava

  • No longer replaces air.

Small dripleaf

  • Texture has been changed.

World generation

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Chunks

  • The Overworld now has a total height of 384 blocks.
    • The world has been extended 64 blocks up and 64 blocks down, which means it's now possible to build from layer -64 to layer 319 in the Overworld.
    • Ore placement below Y=0 is temporary, and underground lava does not generate properly yet.[2]

Mineshafts

  • Mineshaft pieces no longer generate if they were fully floating in the air.
  • Corridors now generate with (bark) wood pillars for support if needed.
  • Cobwebs no longer generate floating without an adjacent block.

General

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πŸ‘ Image
The warning message attached to old worlds.
πŸ‘ Image
1.16 world loaded in 21w06a by changing the level.dat

World selection menu

  • Disabled the loading of old worlds temporarily.
    • This can be bypassed by setting the data version in level.dat to 2694 or higher. However, this may cause issues.

Fixes

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6 issues fixed

From released versions before 1.17

  • MC-105035 – Floating mineshafts generating incorrectly in shade.

From the 1.17 development versions

  • MC-205227 – Wither Skeletons don't die in powdered snow unless fully submerged.
  • MC-213813 – Small dripleaf can destroy any block.
  • MC-213941 – Big dripleaf inconsistently play sounds when in the unstable state.

From the previous development version

  • MC-214118 – When mobGriefing is disabled, big dripleaves can still be destroyed by projectiles shot by mobs.
  • MC-214346 – Big dripleaf can be broken with arrows in spawn protection.

Videos

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Videos made by slicedlime:

Trivia

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  • This snapshot marks the first time since 12w07a, almost exactly 9 years prior, that the height limit was increased.
    • This is also the first time that the build limit has been increased downwards.

References

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Navigation

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