21w39a is the third snapshot for Java Edition 1.18, released on September 29, 2021,[1] which add new advancements and fixes bugs.
Starting from this snapshot, players can open old worlds again.
Additions
Gameplay
- Added four new advancements:
- Added new advancement triggers.
fall_from_height- Triggered when a player lands after falling.
ride_entity_in_lava- Triggered for every tick when player rides in lava.
General
- Added new loot table function
set_potion, to setPotiontag on any item.- Has following parameters:
id: Potion ID
- Has following parameters:
Changes
Mobs
- Now can spawn in aquifers inside dripstone caves.
- No longer spawns in dripstone caves.
World generation
- Its small mountains are more jagged now.
- Trees in Meadows now always contain a bee nest.
Gameplay
- "Light as a Rabbit" now has "Sweet Dreams" as its parent instead of "Adventure".
General
- Buried treasure chests can now contain water breathing potions.
- Chunk’s
Level.Sections[].BlockStates&Level.Sections[].Palettehave moved to a container structure inLevel.Sections[].block_states. - Chunk’s
Level.Biomesare now paletted and live in a similar container structure inLevel.Sections[].biomes. - Chunk’s
Level.CarvingMasks[]is nowlong[]instead ofbyte[].
- Redesigned how effects look in the inventory screen.
- Can display while recipe book is showing.
- The list of effects are now shown to the right of the player's inventory, instead of the left side.
- When the inventory effects list is visible, it will be hidden from the game view to reduce screen clutter.
- There’s now two modes of seeing the effect list: compact and classic:
- Classic is the pre-existing list of effects, one after another.
- Compact is a single icon for each effect, suitable for small screen estate.
- The game will automatically switch between the two looks to suit the available screen estate.
- Changed default brightness to 50.
- Resource pack version number is now 8, as the following has been changed:
- inventory.png now contains an extra sprite for a thin-layout version of the effect list in the inventory.
server.jarnow bundles individual 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.jarwill unpack libraries into a directory configured bybundlerRepoDir(default: working directory).- To run different main class than server, use
bundlerMainClassproperty.
- To run different main class than server, use
Fixes
- 14 issues fixed
- From released versions before 1.18
- MC-116359 – Status effects aren't displayed in inventory when recipe book is open.
- MC-129485 – Certain biome specific plant distribution is completely based on chunks, causing patchy biome generation.
- MC-145376 – Bamboo could generate underground when generating in non-bamboo jungles.
- MC-149822 – Bottom border on status effect displays in the inventory is missing.
- MC-193348 – Status effect bars shift the player's inventory in creative mode.
- MC-196723 – Potion effects obtained in creative mode while in inventory do not show up until reopening inventory.
- MC-214894 – Bamboo generates in caves under jungles.
- MC-214959 – Sugar cane generated in cave.
- MC-218167 – Chatting causes lag to occur.
- From the 1.18 development versions
- MC-236755 – "Feature Placement" crash:
java.lang.IndexOutOfBoundsException: Index 0 out of bounds for length 0. - MC-236903 – Naturally generated cave vines have an age between 17-25.
- From the previous development version
- MC-237464 – Packet sent event is recorded as packet received event.
- MC-237505 – Certain Biome Builder debug values do not change.
- Other
- Removed generic snapshot tooltips from incompatible worlds (except for worlds created in experimental snapshots).
Video
Videos made by slicedlime:
References
- ↑ "Minecraft Snapshot 21w39a" – Minecraft.net, September 29, 2021