VOOZH about

URL: https://minecraft.wiki/w/Java_Edition_21w42a

⇱ Java Edition 21w42a – Minecraft Wiki


Java Edition 21w42a

From Minecraft Wiki
Jump to navigation Jump to search
This page covers a development version that has a major issue under certain conditions.
 
The dedicated server for this version has a security vulnerability in the Log4j library that could be used to perform a remote code execution exploit. It can be addressed by appending a certain JVM argument to the server startup command line.[1]
Minecraft 21w42a
Edition Java Edition
Release date October 20, 2021
Type Snapshot
Snapshot for 1.18
Downloads Client (.json)
Server
Obfuscation maps Client
Server
Protocol version  dec1073741870
 hex4000002E
Data version 2840
Resource pack format 8
Data pack format 8
Minimum Java version Java SE 16
β—„β—„  1.17.1 1.18 1.18.1 β–Ίβ–Ί

β—„  21w41a

21w42a

21w43a β–Ί

{
 "title": "Minecraft 21w42a",
 "images": [
 "21w42a.jpg",
 "Java Edition 21w42a.png"
 ],
 "rows": [
 {
 "field": "''(link to Java Edition article, displayed as Java Edition)''",
 "label": "(link to Edition article, displayed as Edition)"
 },
 {
 "field": "October 20, 2021",
 "label": "Release date"
 },
 {
 "field": "(link to Snapshot article, displayed as Snapshot)",
 "label": "(link to Version types article, displayed as Type)"
 },
 {
 "field": "(link to Java Edition 1.18 article, displayed as 1.18)",
 "label": "Snapshot for"
 },
 {
 "field": "[https://piston-data.mojang.com/v1/objects/05781f1ce3749ee0958be1de939d15b8aff1910b/client.jar Client] ([https://piston-meta.mojang.com/v1/packages/f2affa3247f2471d3334b199d1915ce582914464/21w42a.json .json])<br />[https://piston-data.mojang.com/v1/objects/cf518e2c80fdaef443d68d50d1ac23a72a0a7d85/server.jar Server]",
 "label": "(link to Tutorial:Installing a version#Manual version installation article, displayed as Downloads)"
 },
 {
 "field": "[https://piston-data.mojang.com/v1/objects/3941c7f2f5cb768dd16610ec9f834cc01dc1d32b/client.txt Client]<br />[https://piston-data.mojang.com/v1/objects/873b38fc13155fa3d2eb7b7f167fdbab5651ad0d/server.txt Server]",
 "label": "(link to Obfuscation map article, displayed as Obfuscation maps)"
 },
 {
 "field": " <span style=\"font-size:smaller\"><abbr title=\"decimal\">dec</abbr>: </span>1073741870<br /> <span style=\"font-size:smaller\"><abbr title=\"hexadecimal\">hex</abbr>: </span>4000002E",
 "label": "(link to Protocol version article, displayed as Protocol version)"
 },
 {
 "field": "2840",
 "label": "(link to Data version article, displayed as Data version)"
 },
 {
 "field": "8",
 "label": "<span style=\"white-space: normal;\">(link to Pack format#List of pack formats article, displayed as Resource pack format)</span>"
 },
 {
 "field": "8",
 "label": "<span style=\"white-space: normal;\">(link to Pack format#List of pack formats article, displayed as Data pack format)</span>"
 },
 {
 "field": "<span class=\"plainlinks\">[https://en.wikipedia.org/wiki/Java_version_history#Java_SE_16 Java SE 16]</span>",
 "label": "<span style=\"white-space: normal;\">Minimum Java version</span>"
 }
 ],
 "invimages": [],
 "footer": "<table style=\"margin: auto; word-break: break-word;\">\n<tr style=\"background: inherit;\">\n<td style=\"padding: 0.4em\" >[[Java Edition 1.17.1|<span style=\"margin-right:-0.35em\">β—„</span>β—„  1.17.1]]</td>\n<td style=\"padding: 0.4em\">'''[[Java Edition 1.18|1.18]]'''</td>\n<td style=\"padding: 0.4em\" >[[Java Edition 1.18.1| 1.18.1 <span style=\"margin-right:-0.35em\">β–Ί</span>β–Ί]]</td>\n</tr>\n<tr style=\"background: inherit;\">\n<td style=\"padding: 0.4em\">\n[[Java Edition 21w41a|β—„  21w41a]]\n</td>\n<td style=\"padding: 0.4em\">''' 21w42a'''</td>\n<td style=\"padding: 0.4em\">\n[[Java Edition 21w43a| 21w43a β–Ί]]\n</td>\n</tr>\n</table>"
}


21w42a is the sixth snapshot for Java Edition 1.18, released on October 20, 2021,[2] which introduces new music, changes to world generation, and many fixes related to spawning.

Additions

[edit | edit source]

Items

[edit | edit source]

πŸ‘ Image
Music disc

General

[edit | edit source]

Music

Options

  • Added "Autosave Indicator" to video settings, for singleplayer worlds, which allows to toggle the indicator on / off.
    • The indicator appears in the bottom right of the screen whenever the game is saving the world file.
    • Defaults to on.

Particles

  • Added block_marker, to replace light and barrier.
    • Renders with texture declared in particle slot for model assigned to configured block state.
    • Summoned with same syntax as block particle (i.e. block_marker wheat[age=2]).

Changes

[edit | edit source]

World generation

[edit | edit source]

Ore distribution

  • Increased top height limit of badlands gold generation from Y=79 to Y=256, and increased the number of blobs.

Springs

  • Lava springs can now generate amid calcite, dirt, snow, powder snow and packed ice.
    • These changes allow lava springs to generate in mountains and snowy terrain.
  • Water springs don't generate higher than Y=192, and are slightly less common.

General

[edit | edit source]

World spawn

  • Reworked selection algorithm.
    • Now is selected according to the same climate parameters that control biome placement and world generation: players should no longer spawn in the ocean or some other inconvenient locations like certain mountain biomes.[needs testing]

Fixes

[edit | edit source]

15 issues fixed

From released versions before 1.18

  • MC-73300 – "Saving Level..." text not appearing in pause menu.
  • MC-80824 – Spawning in some biomes causes "Unable to find spawn biome" warning.
  • MC-129912 – Player no longer spawned at highest level at world spawn.
  • MC-131686 – Spawn in ground with Buffet generation when creating a new world.
  • MC-132347 – Spawning inside icebergs.
  • MC-133466 – Certain world configurations force the player to spawn at X=8 Z=8.
  • MC-185033 – Underground spawn in single biome world type.
  • MC-185034 – Always respawning on the same block with no spawnpoint set.
  • MC-198232 – Music plays less frequently as it normally did.
  • MC-202166 – "Times Crafted" statistics column doesn't always display data correctly.
  • MC-214288 – Player does not spawn on the surface of the world when min_y is greater than 0.
  • MC-221641 – Caves can make ravines generate without water.
  • MC-233771 – Parity issue: Light blocks do not display their light level when shown via a held light block item.

From the 1.18 development versions

  • MC-236837 – The player can occasionally spawn underground when loading into a new world.
  • MC-238582 – Beaches generate between desert and ocean.

Videos

[edit | edit source]
Videos made by slicedlime:

Notes

[edit | edit source]
  1. ↑ Released to all 1.18 snapshots.

References

[edit | edit source]

Navigation

[edit | edit source]
Retrieved from "https://minecraft.wiki/w/Java_Edition_21w42a?oldid=3493533"

Navigation menu