Java Edition 23w12a

{
 "title": "Minecraft 23w12a",
 "images": [
 "23w12a.jpg",
 "Java Edition 23w12a.png"
 ],
 "rows": [
 {
 "field": "''(link to Java Edition article, displayed as Java Edition)''",
 "label": "(link to Edition article, displayed as Edition)"
 },
 {
 "field": "March 22, 2023",
 "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 1.20 article, displayed as 1.20)",
 "label": "Snapshot for"
 },
 {
 "field": "[https://piston-data.mojang.com/v1/objects/ae5c2b421148e263f81720a1d5d14fbc3db45f53/client.jar Client] ([https://piston-meta.mojang.com/v1/packages/16ecc9dccd22ef439e49ea39d467b3a518099fbd/23w12a.json .json])<br />[https://piston-data.mojang.com/v1/objects/92fdef90109e534d47e378124ab86e2d6d7b3a42/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/ce4b36810722e22e76c858dcf8edd09f15ea17a7/client.txt Client]<br />[https://piston-data.mojang.com/v1/objects/1e74e50869a8510dff62dc2d78d57c81ca7363f9/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>1073741951<br /> <span style=\"font-size:smaller\"><abbr title=\"hexadecimal\">hex</abbr>: </span>4000007F",
 "label": "(link to Protocol version article, displayed as Protocol version)"
 },
 {
 "field": "3442",
 "label": "(link to Data version article, displayed as Data version)"
 },
 {
 "field": "13",
 "label": "<span style=\"white-space: normal;\">(link to Pack format#List of pack formats article, displayed as Resource pack format)</span>"
 },
 {
 "field": "13",
 "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_17_.28LTS.29 Java SE 17]</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\" rowspan=\"2\">[[Java Edition 1.19.4|<span style=\"margin-right:-0.35em\">◄</span>◄  1.19.4]]</td>\n<td style=\"padding: 0.4em\">'''[[Java Edition 1.20|1.20]]'''</td>\n<td style=\"padding: 0.4em\" >[[Java Edition 1.20.1| 1.20.1 <span style=\"margin-right:-0.35em\">►</span>►]]</td>\n</tr>\n<tr style=\"background: inherit;\">\n\n<td style=\"padding: 0.4em\">''' 23w12a'''</td>\n<td style=\"padding: 0.4em\">\n[[Java Edition 23w13a| 23w13a ►]]\n</td>\n</tr>\n</table>"
}

23w12a is the first snapshot for Java Edition 1.20 released on March 22, 2023,^[1] which adds calibrated sculk sensors, sniffer eggs, suspicious gravel, trail ruins, more armor trims and pottery shards, and new sign mechanics.

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Calibrated sculk sensor

• A type of sculk sensor which does not generate naturally and allows players to filter vibrations based on their frequency level.
• Can only be crafted with one sculk sensor and three amethyst shards in the crafting table.
• One side of the calibrated sculk sensor can receive a redstone signal as an input.
• Emits light level of 1.
  • The strength of that redstone signal is the only vibration frequency the calibrated sculk sensor listens to.

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Pitcher plant

• A type of plant which grows from the pitcher pod after 4 stages (5 stages in total).
• Can be obtained by breaking a fully grown pitcher crop.
• Can be crafted into a cyan dye.
• Cannot be placed in a flower pot.

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Sniffer egg

• Can be found in the suspicious sand generated in warm ocean ruins.
• Also dropped when two sniffers breed.
• Hatches into a snifflet.
  • When placed on a moss block, it hatches after approximately 10 minutes.
  • On all other blocks, it hatches in approximately 20 minutes.

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Suspicious gravel

• The suspicious gravel looks rougher than the gravel block.
• Affected by gravity and vanishes when landing.
• Drops nothing when mined or moved, even if mining with Silk Touch.
• Generates naturally in cold ocean ruins.
• Brushing the suspicious gravel with a brush extracts objects.
  • Has four stages of extracting and recovers gradually when stop brushing.
  • Turns to regular gravel when the extraction is done.
  • Only suspicious gravels with a valid archaeological loot table (the ones naturally generated) can extract an item.

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Pitcher pod

• Can be planted on farmland and grows into a pitcher plant.
• Can only be obtained if a sniffer digs up a pitcher pod.
• Drops pitcher plant when fully grown, otherwise drops itself.

Pottery shards

• Added 16 pottery shards, they can be found in following archaeological sites:
  • Desert pyramid
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      Miner
  • Desert well
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      Brewer
  • Ocean ruins (cold)
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      Blade
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      Explorer
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      Mourner
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      Plenty
  • Ocean ruins (warm)
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      Angler
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      Shelter
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      Snort
  • Trail ruins
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      Burn
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      Danger
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      Friend
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      Heart
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      Heartbreak
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      Howl
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      Sheaf

Smithing templates

• Five more armor trim smithing templates have been added.
  • Trail ruins: they can be obtained randomly from suspicious sand or suspicious gravel generated in these structures accordingly (1.786% chance each), and are duplicated using a terracotta block.
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      Host armor trim
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      Raiser armor trim
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      Shaper armor trim
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      Wayfinder armor trim
  • Ancient city: they can be obtained randomly from chests generated in these structures accordingly, and are duplicated using a cobbled deepslate block.
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      Silence armor trim
      • This is the hardest one to get, with only an 1.25% chance per chest.^[2]

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Trail ruins

• A buried generated structure from a lost culture.
• Generates in taigas, snowy taigas, old growth taigas (both types), old growth birch forests, and jungles.
• Comprised of a tower, a path across the bottom, and a few additional rooms attached to the side.
• Contains suspicious sand and suspicious gravel, as well as mud bricks and several colors of terracotta and glazed terracotta.
• Four armor trims and seven pottery shards can be found here.

Tags

• Added combination_step_sound_blocks block tag.
  • Contains #wool_carpets, crimson_roots, moss_carpet, nether_sprouts, snow, and warped_roots.
  • Controls which blocks can produce a combination of step sounds.
• Added has_structure/trail_ruins biome tag.
  • Contains taiga, snowy_taiga, old_growth_pine_taiga, old_growth_spruce_taiga, old_growth_birch_forest, and jungle.
• Added sniffer_egg_hatch_boost block tag.
  • Contains moss_block.
• Added trail_ruins_replaceable block tag.
  • Contains sand, gravel, dirt, and coarse_dirt.

Block of amethyst

• Added a new behavior called "vibration resonance" when it is placed adjacent to sculk sensors.
  • If that sculk sensor receives a vibration, the block of amethyst re-emits its frequency as a separate vibration at its location.

Decorated pot

• Added a new property named cracked.
  • Is used to determine the sounds the block use upon breaking.

Sculk sensor

• Vibration frequencies of many actions in the game have been tweaked and greatly simplified to prevent unwanted interference, as following:

Signs

• Text can now be edited by interacting with it after being placed in the world.
  • Previous dye and glow ink sac effects are kept after editing.
• Both sides of the sign can now have separate text and colors.
  • By default, a sign prompts the player to input the front side's text when placed.
  • To apply text to the back-side, the player must walk to the other side and interact with that face to edit it.
• Signs can now also be waxed with honeycomb, preventing any further edits to its text.
  • Click commands on signs can only be invoked when the sign is waxed.
  • If a sign with a click command is not waxed, interacting with it doesn't invoke the command and instead opens up the edit screen as usual.

Suspicious sand

• Now generates naturally in warm ocean ruins.

Potions

• Wither effect particle colors have been adjusted to make them more distinguishable.
• Potion of Slow Falling has had its color tweaked to make it more distinguishable from the potion of Invisibility.

Smithing templates

• The dune armor trim now has a new pattern and smithing template icon.
• The sentry armor trim now uses dune armor trim's old pattern and has a new icon to fit this pattern.
  • The sentry armor trim's old pattern is now used by the new shaper armor trim.

Ocean ruins

• Now include suspicious sand and suspicious gravel blocks.

Display

• Previous values are now always discarded if interpolation_duration is 0.
• Made sure that render properties are applied at the same time (so block_state is applied at the same time as transformation, i.e. at next tick after receiving update).
• Entities are not rendered unless initial data is received. That means display entities might not show on the first tick.
  • Due to how game handles updates, changes to entities made after summoning might be delivered to clients with later tick.

Data packs

• The data pack version is now 13, accounting for sign data format changes.

Feature flags

• Removed update_1_20 feature flag and built-in datapack.
  • All features and changes from the "Update 1.20" experimental pack are now part of the game.

Game events

• piston_contract game event has been removed in favor of block_deactivate.
• piston_extend and dispense_fail game events have been removed in favor of block_activate.
• Many game events have new vibration frequencies:

Sounds

• Step sounds can now combine for blocks walked through and stepped on.
  • Occurs for carpets, snow, nether sprouts as well as warped and crimson roots.
    • The top-most block the player is walking on is played as normal.
    • The block underneath is played at a lower volume and pitch.

Structure Post-processors

• A capped post-processor has been added which can limit how many blocks a delegated post-processor randomly transform in a structure.
  • This can be used to configure a structure piece to have an exact amount of specific blocks, instead of using random distribution.
  • It has following required parameters:
    • delegate - A post-processor which performs the actual block transformation.
    • limit - Maximum amount of blocks that the delegated post-processor can transform.
      • The blocks inside a structure are all randomly passed to the delegated post-processor until it has transformed the limited amount.
      • Either constant or random number generator sampled during post-processing.
• Previously a rule could specify an optional fixed output_nbt which would be added to the processed output block entity; this field has now been changed to reference a block_entity_modifier.
  • Existing block_entity_modifiers are:
    • passthrough: Retains existing fields on the block entity.
      • This is the default if no block_entity_modifier is specified.
    • append_static: Similar to previous output_nbt this provides fixed fields to add to the block entity.
      • A minor change is that this modifier appends configured fields to the processed block instead of replacing existing fields.
    • clear: Removes any existing fields on the block entity.
    • append_loot: Appends a loot table and seed to the block entity through required parameter:
      • loot_table: Referenced loot table to add to block entity as LootTable field.
      • Field LootTableSeed is also added to the block entity using random seeded by block position.

Tags

• Added the cherry grove to the is_overworld biome tag.
• Added wayfinder_armor_trim_smithing_template, shaper_armor_trim_smithing_template, silence_armor_trim_smithing_template, raiser_armor_trim_smithing_template, and host_armor_trim_smithing_template to the #trim_templates item tag.
• Added angler_pottery_shard, blade_pottery_shard, brewer_pottery_shard, burn_pottery_shard, danger_pottery_shard, explorer_pottery_shard, friend_pottery_shard, heart_pottery_shard, heartbreak_pottery_shard, howl_pottery_shard, miner_pottery_shard, mourner_pottery_shard, plenty_pottery_shard, sheaf_pottery_shard, shelter_pottery_shard, and snort_pottery_shard to the #decorated_pot_shards item tag.
• Removed moss_carpet, snow, nether_sprouts, warped_roots, crimson_roots, and #wool_carpets tags from the #inside_step_sound_blocks block tag.

44 issues fixed

From released versions before 1.20

• MC-44514 – Teleporting ridden entity in unloaded chunks does not cause chunks to load for riding player.
• MC-74955 – Fences play sound when jumping and walking/sprinting beside them.
• MC-117809 – The sign GUI doesn't close when you get too far away from the said sign.
• MC-157727 – The small cube in honey/slime blocks isn't displayed in inventory.
• MC-165221 – 3D Modeled Potions are not rendered correctly in the "GUI Display".
• MC-167957 – Horizontally fired rockets can create footstep sounds.
• MC-197241 – Players can change the color of a wolf's collar even if they're not its owner.
• MC-201647 – Entity riding an entity can cause location/coordinate desync.
• MC-209104 – Flying with elytra while inside or near blocks produces their step sounds.
• MC-212278 – Sculk sensors do not detect signs being dyed.
• MC-212420 – Sign dyeing sound and hand animation plays even when not consuming a dye.
• MC-213936 – "Minecart moving" event does not trigger the right vibration frequency.
• MC-214619 – Sculk sensors cannot detect application of ink sacs to signs.
• MC-256488 – Bamboo Raft and Raft with Chest models float above ground.
• MC-256551 – Baby camels have a visible inventory.
• MC-256585 – Z-fighting occurs on the text of hanging signs.
• MC-259201 – The tops and bottoms of donkeys' ears are miscolored.
• MC-259879 – Display entities with a rather large shadow_radius value can cause performance issues.
• MC-260020 – Reloading the world resets the Brown Mooshroom's given flower.
• MC-260043 – Decorated Pots don't play breaking sound in creative mode.
• MC-260047 – Decorated pots from the creative inventory and new blank decorated pots with no NBT will match their texture to the last decorated pot you crafted.
• MC-260053 – When rotating a decorated pot with the debug stick, it will spawn a decorated pot item.
• MC-260061 – Sniffer's ears and head z-fight.
• MC-260069 – Growing cherry trees inside each other causes their leaves to decay.
• MC-260197 – Item drop from Decorated Pot has no pickup delay.
• MC-260251 – The walking animations of sniffers don't change in relation to their movement speed.
• MC-260282 – Sniffers can sniff out and follow players in spectator mode.
• MC-260296 – Pink petal block models are not optimized.
• MC-260301 – Decorated Pots drop from setblock/fill air replace.
• MC-260315 – Parity Issue: Pottery Shards have different textures compared to Bedrock.
• MC-260317 – Sniffers try to sniff out obstructed blocks they can't reach.
• MC-260326 – Dying sniffers continue to dig.
• MC-260409 – Cherry Grove biome is not in the #is_overworld biome tag.
• MC-260503 – Sniffers refuse to dig into soil with a non-solid block on top.
• MC-260632 – Riding an entity that is far away causes client/server desync.
• MC-260678 – Potion of Invisibility looks too similar to the Potion of Slow Falling.
• MC-260750 – Magma blocks use unnecessary random ticking for an outdated feature, causing performance issues.
• MC-260757 – Updating a large amount of Iron Bars causes the game to hang in-game or during the Saving world screen.
• MC-260777 – Sniffers ignore some dangerous blocks while sniffing and pathfinding resulting in them being damaged.
• MC-260799 – The word "Sand" is not capitalized in the brush subtitle.
• MC-260839 – Mobs can replace weapons held in their main hand with armor.
• MC-260885 – Display entities summoned with initial transformation interpolate incorrectly from default transformation during next transformation.
• MC-260897 – Display entity's previous state of interpolation doesn't work as expected.
• MC-261015 – Parity Issue: Suspicious Sand does not generate in ruins in a lukewarm ocean compared to Bedrock.