Minecraft:Java Edition 20w45a

20w45a is the first Minecraft:snapshot for Minecraft:Java Edition 1.17, released on November 4, 2020,<ref>Template:Snap</ref> which adds the first Minecraft:Caves & Cliffs features.

Additions

Blocks

Template:Animate Minecraft:Amethyst bud

• Grows from Minecraft:budding amethyst, which is found in amethyst geodes.
• Starts out small, but grows into medium after a while, large after even more time and eventually becomes an Minecraft:amethyst cluster.
• Unlike crops, each growth stage is a separate block instead of a block state.
• Drops nothing if broken in its premature stages, even with Silk Touch.

File:Amethyst Cluster (U) JE1.png Minecraft:Amethyst cluster

• The final, mature stage of the amethyst bud, which grows from budding amethyst in amethyst geodes.
• Drops amethyst shards if broken, in an amount affected by Fortune, but can also be picked up with Silk Touch.
• Emits a light level of 5.

File:Block of Amethyst JE1.png Minecraft:Block of amethyst

• A block found in amethyst geodes.
• Unlike the budding amethyst, the block of amethyst can be obtained when mined.
• Can also be crafted with 4 amethyst shards.

File:Budding Amethyst JE1.png Minecraft:Budding amethyst

• Generates amethyst crystals on any of its sides (if next to a water source block or air, and if the side is not against another block), in a given time.
• Cannot be obtained when mined, even with Silk Touch, and does not drop anything.
• Breaks immediately if pushed by a Minecraft:piston or sticky piston.
  • Cannot be pulled by sticky pistons.
• Generates in amethyst geodes.

File:Calcite JE1.png Minecraft:Calcite

• An off-white stone that generates in geodes, between Minecraft:tuff and amethyst.

Template:Animate Minecraft:Candles

• Crafted with Minecraft:honeycomb and Minecraft:string.
• Come with 16 dyed types and a yellowish non-dyed type.
• Can be lit by any item that produces fire.
• Up to 4 can be placed in a single block, similar to Minecraft:sea pickles, for a maximum light level of 12.
  • Only candles of the same color can be placed on the same block.
• Only one can be placed on an uneaten cake and lit.
  • If any of the cake is consumed the candle pops off.
• Can be placed, but cannot be lit, underwater.

Template:Animate Minecraft:Copper block

• Can be crafted with 9 copper ingots, and can also be crafted back into 9 copper ingots.
• Oxidizes and changes texture to a turquoise-green over time.
• Can be stopped from oxidizing by combining it with a honeycomb to create a waxed copper block.
• Can be crafted into cut copper.

Template:Animate Minecraft:Copper ore

• Generates randomly underground in small blobs, but this has been confirmed to be a placeholder.
• Has the same rarity as iron.
• Generating starts at the same minimum level(s) as iron.
• Can be smelted into a copper ingot.

Template:Animate Minecraft:Cut copper

• Can be made into stair and slab variants.
• Oxidizes and changes texture over time.
• Can be stopped from oxidizing by combining it with a honeycomb to create waxed cut copper.

Template:Animate Minecraft:Cut copper slab

• Oxidizes and changes texture over time.
• Can be stopped from oxidizing by combining it with a honeycomb to create a waxed cut copper slab.

Template:Animate Minecraft:Cut copper stairs

• Oxidizes and changes texture over time.
• Can be stopped from oxidizing by combining it with a honeycomb to create waxed cut copper stairs.

File:Lightning Rod (U) JE1.png Minecraft:Lightning rod

• Can be crafted with 3 copper ingots.
• Nearby lightning strikes within a 64 block radius get redirected to the lightning rod.
• Gives off a redstone signal with a strength of 15 if hit by lightning.
• Can be activated directly by throwing a trident with Channeling at it during a Minecraft:thunderstorm, though this does not produce a redstone signal.

File:Tinted Glass JE1.png Minecraft:Tinted glass

• A black variant of glass that does not let light pass through.
• Can be crafted with 4 amethyst shards and a glass block.
  • Stained glass cannot be used to craft tinted glass.
• Drops itself if mined without Minecraft:Silk Touch or even by hand, unlike Minecraft:glass.

File:Tuff.png Minecraft:Tuff

• A grayish stone that composes the outer layer of amethyst geodes.

Items

File:Amethyst Shard JE1.png Minecraft:Amethyst shard

• Obtained from breaking amethyst clusters.
• The amount dropped can be increased with the Minecraft:Fortune enchantment.
• Can be used to craft tinted glass, blocks of amethyst and a spyglass.

width=32x32 Minecraft:Bundle

• Crafted with 2 Minecraft:string and 6 Minecraft:rabbit hide.
• Used to store other items (except Minecraft:shulker boxes) inside of it.
• Is able to hold different types of items inside of it.
  • Holds the equivalent of one single stack of items.
    • Items with smaller stacks, such as Minecraft:ender pearls, take up more room in a bundle, and non-stackable items take up the whole bundle.
• The bundle's contents can be opened by pressing Template:Ctrl while holding it.

File:Copper Ingot JE1.png Minecraft:Copper ingot

• Obtained by smelting copper ore.
• Used to craft copper blocks, lightning rods and spyglasses.

File:Spyglass JE1.png Minecraft:Spyglass

• Crafted with 2 copper ingots and an amethyst shard.
• When used, it zooms in on wherever the player is looking, but limits their view to a small circle. File:Spyglass scope JE1.png
  • The overlay that limits the view can be removed with a Minecraft:resource pack or by pressing Template:Key.
• There is a unique animation for using the spyglass, which is visible in third person perspective.

World generation

File:Amethyst Geode JE1.png Minecraft:Amethyst geodes

• A new feature found uncommonly underground (can rarely appear exposed to the surface close to sea level).
• Contains blocks of amethyst and budding amethyst blocks, which are encased in a shell of calcite and tuff.
  • Also generates with a small air pocket nearby which may open into the geode.
• Generally generates at or below sea level. (Y=63)
• Most commonly generates at lower levels. (Y=0 to Y=40)
• Overrides standard caves and canyons, but is overridden by mineshafts.
• Currently has a high generation rate, presumably for testing purposes which was also done with Minecraft:ruined portals before.

General

Loot tables

• New functions: set_banner_pattern
  • Sets tags needed for banner patterns. Parameters:
    • patterns – list of pattern objects:
      • pattern – name of pattern (square_bottom_left, bricks, etc.)
      • color – name of color (light_gray, etc.)
    • append – if true, new elements are appended to existing ones instead of replacing.

Minecraft:Tags

• Added the candle_cakes block tag.
  • Contains all 17 types of candle cake.
  • If the player puts a candle on a cake, and keeps clicking the candle on the cake, the candle is duplicated.
  • Blocks in this tag are considered candle cakes and can be lit, if they have the lit block states set to false.
• Added the candles block and item tags.
  • Contains all 17 types of candles.
  • Blocks in this tag are considered candles and can be lit, if they have the lit and waterlogged block states and both are false.
  • Cakes use this tag to determine if a candle item can be placed on it or not.
• Added the cauldrons block tag.
  • Contains cauldrons, water cauldrons, and lava cauldrons.
  • This tag is used in certain pathfinding processes.
• Added the crystal_sound_blocks block tag.
  • Contains amethyst blocks and budding amethyst.
  • Blocks in this tag play the "amethyst block chime" sound repeatedly for a short amount of time after being stepped on, gradually decreasing in volume.
• Added the ignored_by_piglin_babies item tag.
  • Contains leather.
  • Baby piglins do not attempt to pick up items in this tag. Adult piglins are unaffected. Baby piglins still follow the other rules adult piglins follow.
    • If an item is in this tag while simultaneously being recognized as a wanted item by piglins, this tag takes precedence.
• Added the piglin_food item tag.
  • Contains raw and cooked porkchop.
  • Piglins can eat items in this tag.
    • Eating refers to the piglin seeking out and picking up an item without appearing in its inventory, thus vanishing.

Changes

Blocks

Minecraft:Cauldrons

• Can now be filled with lava.
  • Lava filled cauldrons can damage players and mobs inside of it.
  • Lava filled cauldrons give off a Minecraft:redstone comparator signal of strength 1.
• Have been split into normal, water and lava cauldrons.

Minecraft:Grass path

• Renamed to "Dirt Path", as per Template:BE.
  • The block ID has also been changed to dirt_path.
• Can now be made with dirt, coarse dirt, mycelium, and podzol.

Minecraft:Pistons

• Particles now appear if a block is broken by a piston.
  • Sounds, however, do not.<ref>Template:Bug</ref>

All Minecraft:rails

• Are now able to be waterlogged.
• No longer break when contacted by water.

Minecraft:Water

• Flowing water no longer breaks rails.

Minecraft:Shulker boxes

• Now mimics the opening and closing of a Minecraft:shulker.
  • Unlike its mob counterpart, it does not elevate the Minecraft:player when they are standing on it.

Minecraft:Cakes

• Have a variation called "Candle Cake".
  • Can be created by using a candle on an uneaten cake.
  • The candle on the cake comes with 17 colors, depending on the color of the candle used to create it.
  • Pop out the original candle when any of the cake is eaten.

Items

Minecraft:Firework rockets

• Simple firework rockets with one gunpowder can now be crafted using the recipe book.

Mobs

Minecraft:Shulkers

• If a shulker is hit by another shulker's projectile, it now has a chance of spawning a new shulker.
  • Shulkers are more likely to spawn new shulkers when there are fewer other shulkers nearby.

Non-mob entities

Minecraft:Experience orbs

• Now sometimes merge when in large quantities, to improve performance.
  • Merging does not affect the amount of experience gathered from collecting the merged orbs.
• No longer follow dead players.

Minecraft:Minecarts

• Can now move in water, but move considerably slower than they do on land.

General

Data and Minecraft:resource packs

• Changed the resource pack version number from 6 to 7, as the following have been changed:
  • Minecraft:Drowned texture mirroring has changed.<ref>Template:Bug</ref>
  • Slots for the game mode selector are now 26 pixels instead of 25.
• Split the pack_version number into separate resource and data pack versions; the data pack version remains at 6.

Dedicated Minecraft:servers

• A dedicated server can enforce custom resource packs by setting require-resource-pack in server.properties. When this option is used, players are prompted for a response and are disconnected if they decline the required pack.

Entity storage

• Entities have been extracted from main (terrain) chunks and are now stored in separate entities directory (similar to POI storage). Those new files are still region files with NBT.

Libraries

• The game now uses javabridge 1.1.23 instead of 1.0.22.