Minecraft Snapshot 24w36a

Hi everyone! In the most exciting Minecraft-related news of the day, we have a new movi- I mean snapshot coming your way! This week we are adding support for custom equipment with Data Packs and Resource Packs. We have also tweaked the Bundle so that you can empty a group of items when it's used in the hotbar. And as usual, we have included a bunch of bug fixes!

Happy mining!

Known Issues

• Ender Pearls will not teleport you to the right location

Experimental Features

Bundles

• When a Bundle is used in the hotbar, one group of items is emptied at a time instead of everything being emptied at once

Changes

• Squid Spawn Eggs now only spawn adult Squids
  • There is a 5% chance of Squids spawned in groups in the wild to be a baby
• When a mob converts from one type to another (ex: Piglin to Zombified Piglin), the health of the converted mob is set to the same percentage of max health as the original mob had before conversion

Technical Changes

• The Data Pack version is now 52
• Resource Pack version is now 37

Data Pack Version 52

Tags

Block Tags

• bats_spawnable_on: Blocks that bats can spawn on

Item Tags

• Added new tags to control which items can be used to repair various armor sets:
  • repairs_leather_armor
  • repairs_iron_armor
  • repairs_chain_armor
  • repairs_gold_armor
  • repairs_diamond_armor
  • repairs_netherite_armor
  • repairs_turtle_helmet
  • repairs_wolf_armor
• piglin_safe_armor: Items that, when worn by a player, will cause Piglins to not get angry

Changed Item Components

minecraft:item_name

This component is now always present on every item

New Item Components

minecraft:item_model

• Controls item model
• Present on every item
• Format: namespaced id
  • namespace:id will reference model /assets/<namespace>/models/item/<id>

minecraft:equippable

• If present, this item can be equipped by players in the selected slot
• When right-clicking with an item with this component, it will be swapped into the appropriate slot
• Format: object with fields
  • slot: one of head, chest, legs, feet, body, mainhand, or offhand
  • equip_sound (optional): Sound event to play when the item is equipped
    • If not specified, the default armor equip sound will be played
  • model (optional): namespaced ID of the equipment model to use when equipped
    • These model definitions are loaded from Resource Packs
    • If not specified, will fall back to rendering as the item itself when in the head slot (or no rendering if not applicable)
  • allowed_entities (optional): Entity ID, Entity Tag, or list of Entity IDs to limit which entities can equip this item
    • If not specified, any entity (that can wear this kind of equipment) is allowed to equip this item
  • dispensable: boolean (default: true), whether the item can be equipped by using a Dispenser
    • If the item type has special dispenser behavior, this will have no effect
  • e.g. equippable={slot:'chest',equip_sound:'item.armor.equip_chain'}

minecraft:glider

• If present, this item will allow players to glide (as with Elytra) when equipped
• Format: empty object
  • e.g. glider={}

minecraft:tooltip_style

• If present, this item can use custom sprites for its tooltip background and frame
• Format: namespaced ID for a tooltip style
  • A tooltip style of namespace:path will use sprites with IDs:
    • <namespace>:tooltip/<path>_background and <namespace>:tooltip/<path>_frame
  • e.g. tooltip_style='minecraft:special_sword'

Predicates

• Added a new field in the Player sub-predicate, input, that can be used to detect which movement keys the player is pressing
• If specified the predicate matches with the corresponding keybind that the player is pressing; it supports detecting the following input:
  • forward : boolean (optional)
  • backward : boolean (optional)
  • left : boolean (optional)
  • right : boolean (optional)
  • jump : boolean (optional)
  • sneak : boolean (optional)
  • sprint : boolean (optional)

Resource Pack Version 37

• Introduced equipment models
• Textures for entity equipment have been moved and renamed
• The tooltip background and frame may now be customized by replacing sprites:
  • tooltip/background: The background of the tooltip
  • tooltip/frame: The frame appearing around the tooltip
  • Items with a custom tooltip_style component will use sprites with IDs:
    • <namespace>:tooltip/<path>_background and <namespace>:tooltip/<path>_frame
• The nine_slice GUI sprite scaling mode has a new optional boolean property: stretch_inner
  • If true, the inner parts of the texture (i.e. not the corners) will be stretched instead of tiled
  • If not specified, defaults to false as before

Item Models

• All item models can now use the broken property in model overrides that was previously limited to just Elytra
  • This will have a value of 1 if the item has 1 durability left, or 0 otherwise

Custom Equipment Models

The appearance of equipment when equipped by players or certain mobs can now be customized by defining 'equipment models' in the Resource Pack.

• Equipment model definitions are loaded from assets/<namespace>/models/equipment/<path>.json
  • These can then be referenced by the equippable component with a model id of namespace:path
• The model definition is an object with fields: wolf_body, horse_body, llama_body, humanoid, humanoid_leggings, wings
  • All fields are optional, and can be used to specify a list of layers for the given model layer type
  • Each field contains list of layer objects:
    • texture: namespaced texture location for this layer
      • namespace:path will resolve to assets/<namespace>/textures/entity/equipment/<layer_type>/<path>.png
    • dyeable: object with fields (optional), specifying how this layer behaves when dyed (in the dyeable item tag, and has dyed_color component)
      • color_when_undyed: rgb color int (optional)
      • If specified, this layer will be tinted by the color contained in the dyed_color component
        • If the item is not dyeable or not dyed, it will be tinted based on the color specified by color_when_undyed
        • If color_when_undyed is not specified and the item is not dyed, the layer will be hidden
    • use_player_texture: boolean (default: false), true if this layer texture should be overridden by a texture given by the player
      • Only used for wings layers, which will override with the player's custom Elytra texture

A model definition specifying both player and horse armor layers might look like:

{
  "layers": {
    "horse_body": [
      { "texture": "minecraft:iron" }
    ],
    "humanoid": [
      { "texture": "minecraft:iron" }
    ],
    "humanoid_leggings": [
      { "texture": "minecraft:iron" }
    ]
  }
}

Trims

• All equippable items with an equipment model defined support rendering trims, based on the trim component
• Trim textures will be loaded from the appropriate folder in the textures/trims/entity directory
  • For example, armor with wolf_body layers will fetch trims from textures/trims/entity/wolf_body

Moved Textures

• All equipment-related textures have been moved to subfolders of the textures/entity/equipment directory
  • Player armor textures have been moved to textures/entity/equipment/humanoid and textures/entity/equipment/humanoid_leggings
    • <material>_layer_1 textures have been renamed to <material>, and moved into the humanoid subdirectory
    • <material>_layer_2 textures have been renamed to <material>, and moved into the humanoid_leggings subdirectory
    • leather_layer_1_overlay and leather_layer_2_overlay textures have been renamed to leather_overlay in their respective subdirectories
  • wolf_armor and wolf_armor_overlay textures have moved to textures/entity/equipment/wolf_body/ and have been renamed to armadillo_scute and armadillo_scute_overlay respectively
  • turtle_layer_1 has been renamed to turtle_scute
  • Llama decor textures have been moved to textures/entity/equipment/llama_body
  • Horse armor textures have been moved to textures/entity/equipment/horse_body
  • The Elytra texture has been moved to textures/entity/equipment/wings/elytra
• Armor trim textures have also been moved to match the folder structure of the regular equipment textures
  • Textures in textures/trims/models/armor have been divided between textures/trims/entity/humanoid and textures/trims/entity/humanoid_leggings
  • For leggings textures, the _leggings suffix is dropped

Fixed bugs in 24w36a

• MC-16829 The horse armor model does not show the enchantment glint effect
• MC-38022 Order of rendering translucent block faces fails to update with camera position
• MC-88967 Most NBT tags are not kept when a mob converts to another mob
• MC-92875 Collisionless blocks ignore entities with high velocity
• MC-135898 Teams are not retained when a mob converts to another mob
• MC-196556 When projectiles (such as arrows and tridents) move too fast, they can't be teleported by portals and end gateways
• MC-196964 Fall damage is reset when an entity converts to another entity
• MC-230317 Lead disappears when mooshroom cow is sheared
• MC-250924 Goat horns are missing sounds
• MC-259936 Equipping armor in hand via right-click equips entire stack
• MC-261666 Armor given to Villagers is lost when they convert to Zombie Villagers
• MC-270842 Scores are not kept when a mob converts to another mob
• MC-271826 Armor default attribute modifier component can't be removed
• MC-275011 Instant mine does not work when standing inside of cobwebs
• MC-275228 You can duplicate items in your creative hotbar
• MC-275239 Item duplication while a screen is opened (Creative Mode)
• MC-275298 Blocks with special collision behavior have a larger detection range than previously
• MC-275299 Crafting using Ctrl + Drop key crafts the incorrect amount of items
• MC-275344 Sweet Berry Bushes deal damage inconsistently
• MC-275345 Inventory bug that causes items to be constantly shuffled
• MC-275416 Baby squid or baby glow squid produces ink particles that are too far away from itself
• MC-275418 Feeding baby dolphins won't speed up their growth
• MC-275437 Fast moving entities freeze the server which causes watchdog crash
• MC-275445 Specifying the size of a target in post effect shaders fails
• MC-275450 Player Motion data no longer updates while riding another entity
• MC-275455 Player motion is no longer retained on relative teleportation
• MC-275462 Bats can spawn in unusual places, such as in woodland mansions and beneath trees
• MC-275497 The repairable data component does not exist in armor items by default
• MC-275537 Sliding down honey blocks is slower than in previous versions
• MC-275622 Minecarts with TNT are more volatile than in previous releases
• MC-275624 Redstone wire with custom model unexpectedly appears green
• MC-275638 It is still possible to go through portals without being teleported when going quickly enough by throwing riptide tridents
• MC-275642 Baby dolphins do not spawn naturally
• MC-275655 Entity rotation does not visually update when using the teleport command until the world is reloaded
• MC-275745 A scoreboard objective with display mode below_name renders right behind the player's name
• MC-275767 Camera is shaky when riding an entity that is being constantly teleported
• MC-275770 Guardian beam attacks stay yellow and do not shift colors anymore
• MC-276027 Chestplates and Boots on Armor Stands render the helmet overlay texture
• MC-276030 The blue highlighted text background for signs is gone
• MC-276064 Tall grass generated from bone mealing a grass block will delete the 2nd block above it
• MC-276122 Soul sand and magma block bubble columns don't move the player vertically in creative mode when not flying
• MC-276132 Translucency sorting seems to be slightly broken
• MC-276179 Zombie villagers don't raise their arms to attack again
• MC-276204 Dolphins and axolotls keep trying to swim into the seabed