Minecraft: Java Edition Snapshot 21w39a adds new Advancements to the 'Caves and Cliffs Update'

Mojang Studios is standing their work on the upcoming 1.18 Caves and Cliffs Update Function Two release, culminating in the new Minecraft: Coffee Edition Snapshot 21w39a being released to testers on PC. Today's release doesn't include mind-boggling new features or additions, just does begin to add new Advancements from the Caves and Cliffs Update, as well as makes some important changes.

The new Advancements aim to encourage players to approach Minecraft from interesting angles, such as falling from the very elevation of the newly increased earth peak all the way to the very bottom of the newly increased globe depth, or trading with a villager while perched at the uppermost limits of the new Minecraft world heights. This snapshot for i of the best PC games follows its snapshot predecessor equally the tertiary official snapshot for 1.eighteen Caves and Cliffs Update Part Ii.

The upcoming release will undoubtedly provide inspiration for the adjacent era of Minecraft toys and gifts, and so information technology'due south important that Mojang tests the update thoroughly alee of an official release. If you're a part of this testing process, bear in mind that there is a known event in this build, which highly recommends y'all back up any worlds before loading them under this snapshot.

The full changelog for Minecraft: Java Edition Snapshot 21w39a includes:

New features

Added i.18 Caves and Cliffs Update Part Ii Advancements

Advancements

Added "Caves & Cliffs" for falling from top to bottom of the Overworld
Added "Feels like home" for riding strider on lava for 50 blocks in the Overworld
Added "Star Trader" for trading with a villager at the build height limit
Added "Sound of Music" for playing music with a jukebox in a Meadow biome

Known problems

It's highly recommended that you dorsum up your world before loading it in this snapshot
New chunks won't be able to be blended into adjacent quondam chunks once world edge blending is added

Changes

The lone trees in Meadows now e'er comprise a bee nest
Drowned can spawn in aquifers inside dripstone caves
Zombies don't spawn in dripstone caves
Buried treasure chests tin at present contain water breathing potions
Changed default brightness to 50
Redesigned how effects look in the inventory screen, to allow them to show fifty-fifty with the recipe book open

Effects

Your list of effects are at present shown to the correct of your inventory, instead of the left side
When the inventory effects listing is visible, information technology will be hidden from the game view to reduce screen clutter
There are now two modes of seeing the effect list: compact and classic
- Classic is the pre-existing list of furnishings, ane after another
- Compact is a single icon for each effect, suitable for pocket-sized screen estate
The game will automatically switch between the two looks to conform the available screen estate (including having the recipe book open)

Technical updates

Added fall_from_height and ride_entity_distance Advancement triggers
Inverse nether_travel to lucifer other like triggers
Added new loot tabular array role set_potion
Changes to the on-disk chunk format
Resource pack format has been increased to 8
Standalone server.jar now bundles contains private libraries instead of beingness apartment archive

Advancements

fall_from_height — Triggered when a player lands later on falling
Conditions:
- player — a player for which this trigger runs
- start_position — location predicate for last position before falling started
- distance — predicate for distance between start_position and player
ride_entity_in_lava — Triggered for every tick when player rides in lava
Conditions:
- player - a player for which this trigger runs
- start_position - position where riding started (first tick on lava)
- distance - predicate for distance betwixt start_position and player
nether_travel
- entered condition renamed to start_position
- exited has been removed, since it was identical to player.location

Loot tables

set_potion — Sets Potion tag on any particular
Parameters:
- id - potion id

Earth information: Chunk format

Chunk's Level.Sections[].BlockStates & Level.Sections[].Palette have moved to a container structure in Level.Sections[].block_states
Chunk'southward Level.Biomes are now paletted and live in a similar container structure in Level.Sections[].biomes
Chunk'due south Level.CarvingMasks[] is at present long[] instead of byte[]

Resource pack format

minecraft/textures/gui/container/inventory.png now contains an extra sprite for a sparse-layout version of the outcome listing in the inventory

Server edifice

server.jar at present bundles private libraries instead of merging all the files into single archive
This change is meant to solve certain problems related to Java modules
On startup, server.jar volition unpack libraries into a directory configured by bundlerRepoDir (default: working directory)
To run unlike main class than server, utilise bundlerMainClass holding (for example coffee -DbundlerMainClass=net.minecraft.data.Main -jar server.jar --reports) or unpack jar manually and utilize contents of META-INF/classpath-joined for command line

Stock-still bugs

Condition effects aren't displayed in inventory when recipe book is open
Bottom border on status effect displays in the inventory is missing
Condition effect bars shift the player's inventory in creative style
Potion effects obtained in creative mode while in inventory do not show upward until reopening inventory
Bamboo generates in caves under jungles
Sugar cane generated in cave
Chatting causes lag to occur
"Feature Placement" Crash / java.lang.IndexOutOfBoundsException: Alphabetize 0 out of premises for length 0
Naturally generated cavern vines have an age between 17-25
Sure Biome Builder debug values practise not change

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