Minecraft Snapshot 24w45a

With the spooky season behind us, we are entering November with the release of Snapshot 24w45a. This update comes with a bunch of bug fixes, changes to how mobs interact with equipable items on the ground, improvements to item models by adding more functionality and much more. It's a hefty update for resource packs! Enjoy!

Changes#

• Baby Cats and Wolves now get a collar with the color that is a mix between the parents collar color if possible
• Aligned durations of the Suspicious Stew effects with Bedrock Edition:
  • Saturation: 0.35 seconds (unchanged)
  • Night Vision: 5 seconds (unchanged)
  • Fire Resistance: 3 seconds
  • Blindness: 11 seconds
  • Weakness: 7 seconds
  • Regeneration: 7 seconds
  • Jump Boost: 5 seconds
  • Wither: 7 seconds
  • Poison: 11 seconds

Developer's Note: Yay! They are all now prime numbers! (not really)

Mobs picking up items#

Some changes have been made to how mobs decide to replace their equipped items with items on the ground

• If the item belongs in an armor slot, replace the item if any of the following conditions apply
  • The new item has a higher base armor value
  • The new item has a higher base armor toughness value
  • The new item has more enchantments
  • The new item is less damaged
  • The new item has a custom name while the old one doesn't
• If the item belongs in the main hand slot, replace the item if any of the following conditions apply
  • The new item is a preferred weapon while the old one isn't
    • If the old item is a preferred weapon while the new item isn't, do not replace the item
  • The new item has a higher base damage value
  • The new item has more enchantments
  • The new item is less damaged
  • The new item has a custom name while the old one doesn't

Preferred weapons#

The following mobs now have a preferred weapon type to pick up:

• Skeleton variants all prefer Bows
• Piglins and Pillagers prefer Crossbows
• Drowned prefer Tridents

Eyeblossoms#

• Bees don't interact at all with Closed Eyeblossoms
• Bees don't get poisoned when they touch Closed Eyeblossoms
• Bees will not be tempted by Closed Eyeblossoms

Creaking mob#

• An activated Creaking will not move if a survival or adventure player is looking at it
  • Creaking will also have full knockback resistance in that state

Resin Brick#

• Resin Brick is now used as the material for armor trimming instead of Resin Clump

Technical Changes#

• The Data Pack Version is now 59
• The Resource Pack version is now 44
• Data generator in server jar (net.minecraft.data.Main) no longer generates assets directory
  • --client option has been removed from command line for this entry point
• New entry point net.minecraft.client.data.Main is present in client jar, with similar command line structure as data generator in server jar
  • Available options: --client - generates assets directory

Network Protocol#

• Client will now send the minecraft:player_loaded packet once the loading terrain screen has closed after initially loading into the world, and after closing the loading screen when respawning

Data Pack Version 59#

• The tooltip warning on item blocks with the minecraft:block_entity_data component can no longer be hidden by any other component
• Field model in minecraft:equippable component has been renamed to asset_id
• Field item_model_index in trim_material registry has been removed (no longer needed for model rendering)
• Component minecraft:custom_model_data has been expanded, together with minecraft:set_custom_model_data modifier

Tags#

Block Tags#

• Added #bee_attractive - denotes all blocks that Bees may pollinate
• Removed #tall_flowers

Item Tags#

• Removed #flowers and #tall_flowers
• Added skeleton_preferred_weapon, piglin_preferred_weapon, pillager_preferred_weapon and drowned_preferred_weapon tags for specifying preferred weapons types for these mobs when picking up items

Components#

minecraft:custom_model_data#

• Component has now more fields to accomodate new uses by various model property getters
• Fields:
  • floats - list of floats
  • flags - list of booleans
  • strings - list of strings
  • colors - list of RGB color values

Item Modifiers#

minecraft:set_custom_model_data#

• Component has now more fields to accomodate more complex component structure
• Fields:
  • floats - optional list operation of number providers
  • flags - optional list operation of boolean values
  • strings - optional list operation of string values
  • colors - optional list operation of RGB values or number providers
• List operation uses same format as explosions field in set_fireworks modifier
• For example {function:"set_custom_model_data",floats:{values:[2],mode:replace_all}} sets replaces floats with value 2

Resource Pack Version 44#

• Invalid minecaft:filled_map items in an Item Frame (map item without the map_id component) no longer change the size of the frame
• New format for data-driving item models

Renames#

• equipment directory has been moved one level up, i.e. models/equipment/ becomes equipment/
• broken_elytra model and texture has been renamed to elytra_broken

Item models#

• New format has been introduced for describing item models
• Item models are selected based on minecraft:item_model component
  • Model for item with item_model=foo:bar is stored in /assets/foo/items/bar.json
• Format of file is { "model": {"type": <item model type>, <item model type specific fields> } } (see below for exact types)
• overrides section has been removed from existing block models
• There are no longer any hardcoded paths in models directory - models will be now only used if referenced by definitions in items or blockstates directories
• Models in models/item that only redirect to a block model have been removed
  • In such cases, the item model will refer to the models/block model directly

minecraft:model item model type#

• Renders a plain model from models directory
• Fields:
  • model: namespaced ID of model in models (like minecraft:block/yellow_glazed_terracotta)
  • tints: a list of tint sources to apply to elements of rendered model (first entry applies to tintindex 0, second one - 1, etc.)
    • Format:
      • type: type of tint source (see below)
      • <type-specific> - additional fields depending on tint source type

minecraft:constant tint source type#

• Returns a constant RGB color
• Fields:
  • value - A packed integer RGB value (e.g. -1) or an array of RGB values (e.g. [ 1, 1, 1 ])

minecraft:dye tint source type#

• Returns value from minecraft:dyed_color component or default if not present
• Fields:
  • default - RGB value

minecraft:grass tint source type#

• Returns grass color at specific climate parameters, based on textures/colormap/grass.png
• Same colors as ones selected by downfall and temperature in biome configuration
• Fields:
  • temperature - float in 0..1 (inclusive) range
  • downfall - float in 0..1 (inclusive) range

minecraft:firework tint source type#

• Returns average of colors from minecraft:firework_explosion component or default color if there are none
• Fields:
  • default: RGB value

minecraft:potion tint source type#

• Returns color from minecraft:potion_contents component:
  • if component is present:
    • custom color, if there is one present in component
    • default color, if effect list is empty
    • average of effect colors, otherwise
  • default color, otherwise
• Fields:
  • default: RGB value

minecraft:map_color tint source type#

• Return value from minecraft:map_color component or default color if component is not present
• Fields:
  • default: RGB value

minecraft:custom_model_data tint source type#

• Returns value from colors list in minecraft:custom_model_data component
• Fields:
  • index - index for field in colors, default: 0

minecraft:special item model type#

• Renders a special (not data-driven) model
• Fields:
  • model: special model instance
    • Format:
      • type - type of special model (see below)
      • <type-specific> - additional fields depending on tint source type
  • base: namespaced ID of model in models, providing transformations, particle texture and GUI light

minecraft:bed special model type#

• Renders a whole bed
• Fields:
  • texture - namespaced ID for texture, without textures/entity/bed/ prefix and .png suffix

minecraft:banner special model type#

• Renders a banner with patterns from minecraft:banner_patterns component
• Fields:
  • color - color of banner base, one of 16 predefined colors

minecraft:conduit special model type#

• Renders conduit
• No fields

minecraft:chest special model type#

• Renders a single chest
• Fields:
  • texture - namespaced ID for texture, without textures/entity/chest/ prefix and .png suffix
  • openness - float, 0.0 (default) - fully closed, 1.0 - fully open

minecraft:head special model type#

• Renders a head
• Uses profile from minecraft:profile component when applicable
• Fields:
  • kind - one of skeleton, wither_skeleton, player, zombie, creeper, piglin, dragon

minecraft:shulker_box special model type#

• Renders a shulker box
• Fields:
  • texture - namespaced ID for texture, without textures/entity/shulker/ prefix and .png suffix
  • openness - float, 0.0 (default) - fully closed, 1.0 - fully open
  • orientation - orientation for rendering, default: up

minecraft:shield special model type#

• Renders a shield
• Uses patterns from minecraft:banner_patterns component and color from minecraft:base_color component
• No fields

minecraft:trident special model type#

• Renders a trident
• No fields

minecraft:decorated_pot special model type#

• Renders a decorated pot
• Uses values from minecraft:pot_decorations component
• No fields

minecraft:composite item model type#

• Renders multiple sub-models
• All models are rendered in the same space
• Fields:
  • models: a list of item models to render

minecraft:condition item model type#

• Renders an item model depending on boolean property
• Fields:
  • property: type of property (see below)
  • <property-specific> - additional fields depending on property type, added inline
  • on_true - item model to render when property is true
  • on_false - item model to render when property is false

minecraft:using_item boolean property#

• Returns true if player is currently using this item
• No fields

minecraft:broken boolean property#

• Returns true if the item is damageable and has only one use remaining before breaking
• No fields

minecraft:damaged boolean property#

• Returns true if the item is damageable and has been used at least once
• No fields

minecraft:has_component boolean property#

• Returns true if the given component is present on the item
• Fields:
  • component - component type

minecraft:fishing_rod/cast boolean property#

• Returns true if there is a fishing bobber attached to currently used fishing rod
• No fields

minecraft:bundle/has_selected_item boolean property#

• Returns true if bundle is "open", i.e. it has selected item visible in GUI
• No fields

minecraft:xmas boolean property#

• Returns true if current date is between December 24th and December 26th (inclusive)
• No fields

minecraft:selected boolean property#

• Returns true if item is selected on a hotbar
• No fields

minecraft:carried boolean property#

• Returns true if item is carried between slots in GUI
• No fields

minecraft:shift_down boolean property#

• Returns true if player currently holding shift key down
• No fields

minecraft:custom_model_data boolean property#

• Returns value from flags list in minecraft:custom_model_data component
• Fields:
  • index - index for field in flags, default: 0

minecraft:select item model type#

• Renders an item model based on discrete property
• Fields:
  • property: type of property (see below)
  • <property-specific> - additional fields depending on property type, added inline
  • cases - list of cases to match in format:
    • when - value to match against property, type depends on property
      • could be a single value or a list of values
    • model - item model to render when case is selected
  • fallback - item model to render if none of the cases matched the value
    • if not present, placeholder "missing" model will be rendered instead

minecraft:main_hand property#

• Returns main hand of holding player
• No fields
• Values: left, right

minecraft:charge_type property#

• Returns charge type stored in minecraft:charged_projectiles component
• No fields
• Values:
  • none - if there are no projectiles or component is not present
  • rocket - if there is at least one firework rocket
  • arrow - any other case

minecraft:trim_material property#

• Returns value of material field from minecraft:trim component, if present
• No fields
• Values: namespaced ID

minecraft:block_state property#

• Returns value for some property from minecraft:block_state component
• Fields:
  • block_state_property - string key to select from component
• Values: any string

minecraft:display_context property#

• Returns context this item is rendered in
• No fields
• Values:
  • none
  • thirdperson_lefthand
  • thirdperson_righthand
  • firstperson_lefthand
  • firstperson_righthand
  • head
  • gui
  • ground
  • fixed

minecraft:custom_model_data property#

• Returns value from strings list in minecraft:custom_model_data component
• Fields:
  • index - index for field in strings, default: 0
• Values: any string

minecraft:range_dispatch item model type#

• Renders an item model based on numeric property
• Replacement for old overrides section from block models
• Will select last entry with threshold less or equal to property value
• Fields:
  • property: type of property (see below)
  • <property-specific> - additional fields depending on property type
  • scale - factor to multiply property value with, default: 1.0
  • entries - list of entries in format:
    • threshold - float value
    • model - item model to render when entry is selected
    • Note: order of fields does not matter, list will be sorted by threshold in ascending order before use
  • fallback - item model to render if no entries were less or equal to property value
    • if not present, placeholder "missing" model will be rendered instead

minecraft:custom_model_data numeric property#

• Returns value from floats list in minecraft:custom_model_data component
• Fields:
  • index - index for field in floats, default: 0

minecraft:bundle/fullness numeric property#

• Returns weight of bundle_contents component or 0 if not present
• No fields

minecraft:damage numeric property#

• Returns value for damage component
• Fields:
  • normalize: boolean, default: true
    • if true, returns value of damage divided by max_damage component, clamped to 0..1
    • if false, returns value of damage, clamped to 0..max_damage

minecraft:count numeric property#

• Returns stack size
• Fields:
  • normalize: boolean, default: true
    • if true, returns count divided by max_stack_size component, clamped to 0..1
    • if false, returns count clamped to 0..max_stack_size

minecraft:cooldown numeric property#

• Returns remaining cooldown for item, scaled to 0..1
• No fields

minecraft:time numeric property#

• Returns value of day time (used for clock), scaled to 0..1
• Fields:
  • wobble - if true, value will oscillate for some time around target before settling, default: true
  • natural_only - if true, value will be random in dimensions with natural=false, default: true

minecraft:compass numeric property#

• Returns angle, scaled to 0..1 in x-z plane between holder position and target
• If target is not valid (not present, in other dimension or to close to holder position) random value will be returned
• Fields:
  • target - one of:
    • spawn - points at world spawn
    • lodestone - points at location stored in lodestone_tracker component
    • recovery - points at last player death location
  • wobble - if true, value will oscillate for some time around target before settling, default: true

crossbow/pull numeric property#

• Returns crossbow-specific use time
• No fields

use_duration numeric property#

• Returns item use ticks
• Fields:
  • remaining - if true, returned value will be remaining use ticks, if false - ticks so far, default: false

use_cycle numeric property#

• Returns remaining use ticks modulo period
• Fields:
  • period - positive float, default 1.0

minecraft:bundle/selected_item item model type#

• Renders selected stack in minecraft:bundle_contents component, if present, otherwise does nothing

Fixed bugs in 24w45a#

• MC-212 Fall damage is ignored for a couple of seconds when reloading into LAN or singleplayer worlds
• MC-99848 Sprinting isn't canceled upon receiving the blindness effect
• MC-158872 Models use model of last matched predicate, not closest match
• MC-159508 Ctrl + Pick block on beehives and nests does not copy their honey levels
• MC-166072 Custom Trident model ignores "layer0" and "elements" section
• MC-186341 Command autocomplete doesn't consider parts after a slash
• MC-193176 Most mobs with CanPickUpLoot prefer swords over axes and will downgrade their weapon
• MC-193336 Heads/skulls don't render when held by an enderman or as block display entities
• MC-201940 After dying, Ender Dragon body part hitboxes do not move upwards with the main hitbox
• MC-206684 Spyglass particles have no associated texture
• MC-229142 Spyglass texture doesn't allow override through resource pack
• MC-249079 Sculk veins are not mirrored correctly from behind
• MC-260216 Decorated pots aren't rendered when held by endermen or as block display entities
• MC-267343 Sprinting isn't canceled upon riding entities
• MC-269616 Telemetry Data scroll bar does not have a background
• MC-270136 Thrown projectiles with custom_model_data do not maintain proper particles when breaking
• MC-271786 Empty block states in noise_provider does not cause validation to fail, causing crash
• MC-272994 Allays assigned to a player can be set on fire with sweeping and fire aspect
• MC-273450 Mobs with CanPickUpLoot:1b behave inconsistently with the mace / trident
• MC-273522 Mobs with CanPickUpLoot no longer pick up enchanted items after picking up an unenchanted item
• MC-273635 Trial spawners forget their designated mob when placed by player out of creative mode, assigned by spawn eggs
• MC-274268 Trial Spawner keeps flashing after cooldown ends
• MC-275011 Instant mine does not work when standing inside of cobwebs
• MC-275215 Experiments warning goes off the screen if viewed at low window size
• MC-276110 honey_level model predicate range is 1 for level 5 and 0 for levels 1-4
• MC-276115 New Bee Nest and Beehive item models don't use the block parent
• MC-276412 Custom item models set to a shield and various other items all create invisible items
• MC-276654 item_model item component breaks on trident
• MC-276728 Tridents and spyglasses appear dark in the inventory if given a custom item model for a block
• MC-276730 Bundles appear dark in the inventory if given a custom item model for a block and then scrolled through
• MC-276731 Items which use entity models will not render another entity model if specified via item model component
• MC-276732 Colors will carry over from item ID to target model
• MC-276771 Missing texture when a damageable item with one of several template models is destroyed
• MC-276828 Minecraft no longer prints an error to the game log when a model fails to define a texture
• MC-276847 Bundles given the model of a different bundle will not preserve their color when scrolled through
• MC-277082 Creakings take knockback from wind charges
• MC-277092 The eyes of creakings aren't visible when creakings have the invisibility effect
• MC-277149 Creakings are affected by knockback from mace smash attacks
• MC-277243 Creakings take knockback from Punch bows
• MC-277264 The Creaking can be knocked back by zoglins
• MC-277916 Containers are locked when upgrading a world from certain versions
• MC-277925 Resin Brick Stairs are not part of the #stairs block and item tags
• MC-277926 Resin Brick Slab is not part of the #slab block and item tags
• MC-277929 The game crashes when attempting to use the void preset
• MC-277930 Eyeblossom subtitles are inverted
• MC-277931 Incorrect display on the map of the flower Closed and Open Eyeblossom
• MC-277932 Resin Clump is not part of the #replaceable block tag
• MC-277933 Smithing Table doesn't show a Clump icon for ingredient slot
• MC-277939 Programmer Art's empty slot icons may not have been correctly updated for 24w44a
• MC-277941 resin_clump is not mirrored correctly from behind
• MC-277945 Incorrect verb form in "Elytra swooshes" subtitle
• MC-277948 Suspicious stew gives different durations of Blindness for Eyeblossom and Azure Bluet
• MC-277950 Open potted eyeblossom is shaded (flower_pot_cross_emissive)
• MC-277951 Eyeblossom is placed in an unexpected position in the Creative inventory
• MC-277952 Sprinting isn't canceled upon flying with elytra
• MC-277954 Creaking Heart underwater plays spawning sounds in a loop
• MC-277955 Using a loom crashes the game
• MC-277961 Experience orbs incorrectly bounce up
• MC-277964 Resin is not generated when a creaking is attacked by a wolf owned by a player
• MC-277966 Creaking does not generate resin from player-caused explosions
• MC-277967 The game crashes when certain explosions occur near a creaking in its death animation
• MC-277970 Hanging signs don't display chains when attached to the side of a block
• MC-277972 You can no longer swim when crouched under a slab
• MC-277983 Naturally-spawned creaking hearts drop experience when broken in Creative mode
• MC-277994 Picking a decorated pot or a shulker box always keeps its container data
• MC-278002 Sculk sensors are not activated upon resin clumps spawning from creaking hearts
• MC-278004 Hitting a creaking heart with a wind charge kills the creaking
• MC-278028 Using items underwater can force you to exit swimming mode
• MC-278071 "minecraft.used:minecraft.trident" doesn't increase when throwing a trident