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{{Infobox version
|title=Minecraft 24w19a
|image=24w19a.jpg
|image2=Java Edition 24w19a.png
|edition=Java
|type=Snapshot
|date=May 10, 2024
|jsonhash=efc6555115de2c4249a3e7285cf1034a99d418ba
|clienthash=ec4ab4da55435693e7342cfe6d23ab0df9226eb7
|clientmap=05e170c2a3722653cea193b427808f4c19dd3447
|serverhash=8088cca48fece804d29b368ab5bbcc27a540456c
|servermap=9d799a9d897cf54d9bd3ea4964e77113da1c8ca9
|parent=1.21
|prevparent=1.20.6
|prev=24w18a
|next=24w19b
|nextparent=1.21.1
}}<onlyinclude>

'''24w19a''' is the second [[Minecraft:snapshot]] for [[Minecraft:Java Edition 1.21]], released on May 10, 2024,<ref>{{snap|24w19a|id=a|May 10, 2024}}</ref> which optimizes chunk loading performance, and fixes bugs.

== Additions ==
=== General ===
'''[[Minecraft:Sounds]]'''
* Added 4 new cave [[Minecraft:ambient sounds]]:

{| class="wikitable"
!Name
!Sound
!Description
!Volume
!Pitch
|-
|Cave 20<br>
|[[File:Cave20 BE1.wav]]
|
|rowspan = 23|1.0
|rowspan = 23|1.0
|-
|Cave 21<br>
|[[File:Cave21 BE1.wav]]
|Rumbling and creaking noises with quiet tones in the background.
|-
|Cave 22<br>
|[[File:Cave22 BE1.wav]]
|Resembles a [[Minecraft:warden]] using its sonic boom attack.
|-
|Cave 23<br>
|[[File:Cave23 BE1.wav]]
|Eerie sounds with heartbeats at the end, possibly resembling a [[Minecraft:warden]].
|}

== Changes ==
=== Blocks ===
''' [[Minecraft:Copper bulb]]'''
* Replaced the sounds for "turn off" and "turn on" with one "toggle" sound.

'''[[Minecraft:Sculk sensor]] and [[Minecraft:calibrated sculk sensor]]'''
* Added [[Minecraft:frosted ice]] being placed by [[Minecraft:Frost Walker]] to the list of events that produce a "Block Placed" vibration (frequency 13).{{Info needed|if the enchantment is modified with a resource pack or if a resource pack adds a similar enchantment, will blocks placed by the enchantment in this manner trigger the "Block Placed" vibration?}}

[[File:Trial Spawner JE4 BE3.png|width=32x32]]''' [[Minecraft:Trial spawner]]'''
* Updated the top face texture and the active state texture.

=== Items ===
''' [[Minecraft:Mace]]'''
* [[Minecraft:Fire Aspect]] can be applied to maces again.

=== Gameplay ===
'''[[Minecraft:Enchantments]]'''
* [[Minecraft:Breach]] and [[Minecraft:Density]] are now incompatible.

=== General ===
'''[[Minecraft:Data pack]]'''
* The [[Minecraft:pack format]] version is now <code>43</code>.
* Registry decorated_pot_patterns has been renamed to <code>decorated_pot_pattern</code>.
* Renamed directories; each directory that used the plural name of its element now matches registry name:

{| class="wikitable"
! Old name
! New name
|-
| <samp>tags/items</samp>
| <samp>tags/item</samp>
|-
| <samp>tags/blocks</samp>
| <samp>tags/block</samp>
|-
| <samp>tags/entity_types</samp>
| <samp>tags/entity_type</samp>
|-
| <samp>tags/fluids</samp>
| <samp>tags/fluid</samp>
|-
| <samp>tags/game_events</samp>
| <samp>tags/game_event</samp>
|}

'''[[Minecraft:Data component format]]'''
* The <code>custom_data</code> component can now be specified as an SNBT string to preserve type information in JSON.
** This is the same as is used in the <code>set_custom_data</code> loot function and <code>custom_data</code> predicate.
* The <code>food</code> item component has new fields:
** <code>using_converts_to</code>: item with components (optional).
*** Once consumed, the food item is replaced with the specified item.
*** e.g. <code>food={nutrition:1,saturation:0,using_converts_to:{id:"poisonous_potato",components:{"minecraft:custom_name":'"Wait what?"'}}}</code>.

'''[[Minecraft:Entity format]]'''
* Removed <code>power</code> tag and replaced with <code>acceleration_power</code> tag with a number value that control the projectile's acceleration (and maximum speed).
** This change affects the following projectiles; <code>dragon_fireball</code>, <code>large_fireball</code>, <code>small_fireball</code>, <code>fireball</code>, <code>breeze_wind_charge</code>, <code>wind_charge</code>, <code>wither_skull</code>.

'''[[Minecraft:Custom structure]]'''
* New tag <code>dimension_padding</code> for structures.
** Ensures that a structure is not generating through the edges of a dimension by adding vertical padding to its bounding box.
** Default is <code>0</code>.
** Trial chambers have a padding of 10 since they are generated deep underground and would sometimes intersect with bedrock layer.

'''Entity effect types'''
* Adds optional field <code>trigger_game_event</code> for effect types <code>replace_block</code>, <code>replace_disc</code> and <code>set_block_properties</code>.
** Game event ID for a game event to trigger when a block has been replaced.

'''[[Minecraft:Tag]]s'''
* Added <code>fire_aspect_lightable</code> to each block that should be possible to light by {{control|hitting}} it with a tool that has [[Minecraft:Fire Aspect]].

'''Damage type predicate'''
* New option: <code>is_direct</code> - optional boolean.
** When present, <code>true</code> requires the damage to be direct and <code>false</code> requires the damage to be indirect.
** Damage is direct when its direct and source entities are the same.

'''Performance'''
* When reading an already generated chunk from disk, surrounding chunks are no longer unnecessarily loaded, reducing memory and CPU overhead.

== Fixes ==
{{fixes|fixedin=24w19a
|;old
|9568|Mobs suffocate/go through blocks when growing up near a solid block.
|9644|Launched {{cd|falling_block}} entities do not travel through portals.
|14923|Players can be kicked for spamming in a Singleplayer world with cheats disabled.
|16345|Reducing the player's base max health using {{cmd|attribute}} does not always reduce their current health.
|26304|Brewing stands reset brew cycle when unloaded.
|93833|Only if Health is provided, {{cd|maxHealth}} attribute is used as maximum Health value.
|96198|Boats/rafts move into blocks when landing in less than one block deep water.
|110815|Slimes are summoned with the wrong amount of health.
|175619|Dispenser drops honey bottle unless empty slot is available.
|178383|Horses, donkeys, mules and llamas spawned from spawn eggs or {{cmd|summon}} command have 53 health.
|195931|Incorrect amount of damage heart particles shown when hitting some entities for the first time.
|252846|Mobs can pass through fences with carpets on top when growing up.
|253791|Frogs suffocate when growing.
|254004|Falling block entities do not process their end gateway cooldown timer.
|267947|Ender pearls can teleport players in Spectator mode.
|267951|The game freezes and eventually crashes when creating a world with the "{{cd|spawnChunkRadius}}" gamerule set to high values.
|267968|Medium slimes from trial chamber spawners take damage incorrectly when first hit.
|267981|The "Trial Spawner crackles" subtitle is only displayed for a split second upon the "{{cd|minecraft:block.trial_spawner.ambient}}" sound being played.
|268106|Entities' current health is not capped at their max health in all applicable situations.
|268772|Fall damage multiplier attribute has unintuitive coloring.
|269318|Books placed on a lectern in Creative mode are consumed.
|269601|Mace smash attack does not knock back other players when they are not the attacked entity.
|269633|Placing an oversized filled bucket resets the stack size to 1.
|269642|Eating an oversized soup/stew resets the stack size to 1.
|269674|Oversized book and quill stacks reset count when signed.
|269685|Buckets are lost when consuming oversized milk buckets.
|269686|Oversized music disc stacks can be duplicated with jukeboxes.
|269708|Dispensers using an oversized stack of water bottles resets the stack size to 1.
|269717|Cauldron deletes overstacked tinted shulker boxes.
|269809|Feeding an axolotl an oversized tropical fish bucket resets the stack size to 1.
|270296|Ominous item spawner spawns unstackable arrows with potion effects.
|270584|Vault/ominous vault loot isn't predetermined, allowing players to create backups of their worlds to get desired rewards.
|270635|Trial spawner textures are inconsistent.
|270684|{{cd|set_attributes}} loot function doesn't accept an empty list.
|270779|Getting data with {{cmd|data}} command from a block/chest with a large amount of data can cause the game to crash.
|270818|Data generator items report is not deterministic.
|270926|"{{cd|foodSaturationLevel}}" can be negative.
|270965|The data type of the "{{cd|minecraft:custom_data}}" component of the recipe result will be forcibly modified.
|270988|Iron golem and snow golem spawn eggs from before 1.13 do not upgrade to 1.20.5 correctly
|271001|Items in a container can be given a count above 99 (to max integer), and can crash the world.
|271005|Knowledge books with a max stack size over 1 consume all items in the stack when used.
|271026|Components that set a status effect sometimes lose parts of the data.
|271094|Entity ID inside {{cd|EntityTag}} is ignored when updating a world to 1.20.5.
|271159|Banner pattern entries without colors are invalidated when upgrading to 1.20.5.
|271170|Unexpected error when modifying skull's custom name to an invalid value.
|;previous
|271398|Crafting ingredients remain in the grid after crafting certain items, causing item duplication.
|271400|The Quick Charge enchantment on crossbows no longer increases the crossbow loading speed.
|271402|Sharpness and mob-specific damage enchantments reduce attack damage instead of increasing it.
|271404|Breach and Density enchantments aren't mutually exclusive.
|271406|Blocks reappear when mined instantly.
|271422|Soul Speed causes your FOV to change whenever you jump.
|271423|Riptide enchantment does not work properly.
|271427|Sweep attacks no longer trigger consistently.
|271434|Campfires knockback the player.
|271435|Moving while being attacked no longer deals knockback correctly.
|271436|Mace can no longer be enchanted with Fire Aspect.
|271441|Fire Protection tooltip is displayed in red text despite being a positive effect.
|271442|The Fire Aspect enchantment can change the "lit" states of redstone lamps, redstone torches, copper bulbs, furnaces, smokers, and blast furnaces.
|271444|The Fire Aspect enchantment can turn on campfires and candles while underwater.
|271449|Player momentum no longer affects ender pearls, eggs, or snowballs.
|271455|When holding a Fire Aspect weapon in the mainhand, thrown tridents in the offhand will set mobs on fire.
|271459|Frost Walker deletes waterlogged blocks.
|271461|Interacting with certain villagers with the villager trade rebalance enabled causes client crash.
|271477|"{{cd|projectile_spawned}}" enchantment effect always activates at 0, 0, 0.
|271484|Lighting candles and campfires with Fire Aspect doesn't sent vibration to sculk sensors.
|271556|The drop rate of wither skeleton skulls is lowered by 0.01.
|271562|"{{cd|projectile_spawned}}" enchantment component triggers the enchantment effects before setting the projectile's default NBT.
|271565|The game can crash when upgrading worlds with zombie villagers from before 1.9.
|271632|Weapon with Bane of Arthropods can only give the target Slowness I instead of Slowness IV.
|271637|The enchantment entity effect type "{{cd|run_command}}" always runs the command in the overworld.
|271652|Holding items enchanted with Thorns in your hand no longer works as if you were wearing them.
|271654|Enchantments granting bonus damage to melee weapons aren't producing particles.
|271710|Key Binds background is darker than the rest of UI.
|271725|Enchantment entity effect "{{cd|apply_mob_effect}}" never applies an amplifier even if one is defined.
|271726|The {{cd|item.trident.thunder}} sound can no longer be heard by the player who was struck by a lightning.
}}</onlyinclude>

== Videos ==
{{slicedlime|seB2ZwgPOLQ|AJTSOwlsgwk}}

== References ==
{{Reflist}}

== Navigation ==
{{Navbox Java Edition versions|1.2x}}

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Minecraft:Java Edition 24w19a - Revision history

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