Minecraft Java Edition - Snapshot 24w45a – Minecraft Feedback

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

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 since 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

Get the Snapshot

Snapshots are available for Minecraft: Java Edition. To install the Snapshot, open up the Minecraft Launcher and enable snapshots in the "Installations" tab.

Testing versions can corrupt your world, so please backup and/or run them in a different folder from your main worlds.

Cross-platform server jar:

Minecraft server jar

Report bugs here:

Minecraft issue tracker!

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Minecraft Java Edition - Snapshot 24w45a