Minecraft:Java Edition 20w17a

20w17a is the thirteenth Minecraft:snapshot for Minecraft:Java Edition 1.16, released on April 22, 2020,<ref name="20w17a">Template:Snap</ref> which added the Template:Cmd command, tweaked Minecraft:bastion remnant loot, and lowered the spawn rate of Minecraft:ruined portals, along with bug fixes.

Additions

Command format

Minecraft:Commands

• Added the Template:Cmd command.
  • Used to get, set, or modify Minecraft:attributes.
  • Syntax:
    • attribute <target> <attribute> get [<scale>]: get total value of attribute
    • attribute <target> <attribute> base set <value>: sets base value
    • attribute <target> <attribute> base get [<scale>]: get base value
    • attribute <target> <attribute> modifier add <uuid> <name> <value> (add|multiply|multiply_base): adds modifier (fails if modifier is already present)
    • attribute <target> <attribute> modifier remove <uuid>: removes modifier
    • attribute <target> <attribute> modifier value get <uuid> [<scale>]: get value of modifier
  • Parameters:
    • <target>: single entity (note: only players, armor stands and mobs have attributes)
    • <attribute>: name of attribute (like minecraft:generic.max_health)
    • <name>: string (in optional quotes) describing human-readable name of modifier
    • <value>: floating point value (note: certain attributes have limits on final value, so the change might not be noticeable)

General

Options

• Added an "Entity Distance" scale option ranging from 50% to 500%.
  • Sets the distance at which Minecraft:mobs render into frame.

Minecraft:Tags

• Added pressure_plates block tag.
  • Contains light and heavy weighted pressure plates, as well as the #wooden_pressure_plates and #stone_pressure_plates block tags.
• Added stone_pressure_plates block tag.
  • Contains stone and polished blackstone pressure plates.

Minecraft:Sounds

• Added new sounds for chains.

World creation

• Minecraft:Difficulty and Minecraft:game rules can now be changed from the "Create World" screen.

Changes

Blocks

Minecraft:Furnaces

• Breaking a furnace now gives the experience for the smelted things inside.

Minecraft:Gilded blackstone and Minecraft:Nether gold ore

• Now use the same sounds as Minecraft:Nether quartz ore.

Minecraft:Smithing tables

File:SmithingTableUI-20w17.png

The new smithing table UI

• Improved UI.
  • Added an ingot outline to the second input slot.
  • Added a hammer icon above the input slots, similar to the anvil UI.

Minecraft:Soul fire lanterns and Minecraft:soul fire torches

• Renamed "Soul Fire Lantern" and "Soul Fire Torch" to "Soul Lantern" and "Soul Torch", respectively.
• IDs have been changed from soul_fire_torch and soul_fire_lantern to soul_torch and soul_lantern, respectively.

Minecraft:Walls

• Now change into posts when Minecraft:pressure plates and Minecraft:banners are placed on them.

World generation

Minecraft:Bastion remnants

• Loot has been tweaked.
  • Ancient debris and netherite scraps have been made generally rarer.
  • Netherite gear can no longer be found in bastion remnants; instead, diamond gear is found.
  • The chances and stack sizes of various items have been tweaked.

Minecraft:Ruined portals

• Now spawn about 30% less frequently.

Gameplay

Creative inventory

• Inventory tab names, which appear in the description of items when in the Search tab, now display in boldface.
  • Other information, such as tag names, are now displayed in boldface as well.
• Netherite ingots and netherite scrap have been moved next to iron and gold ingots.

General

Block storage format

• Format in chunks has been slightly changed to speed up various tasks (rendering, pathfinding, world generation, etc.).
  • BlockStates in Sections elements no longer contain values stretching over multiple 64-bit fields.
    • If the number of bits per block is not the power of two (i.e. single 64-bit value can't fill the whole number of blockstates) some bits aren't used.
    • For example, if a single block state takes 5 bits, the highest 4 bits of every 64-bit field are unused. That also means a slight increase in storage size (in case of 5 bits, from 320 to 342 64-bit fields).

Fonts

• Chat component style now supports font property, which is a resource location for the font in the resource pack. No entry is equivalent to minecraft:default.
• Full range of Unicode characters is supported, making it possible to type emojis and other Unicode characters outside of the Basic Multilingual Plane.
  • However, custom resource packs must be used to display correct characters instead of tofu, due to the lack of these characters in the default font.
• Force Unicode option now switches between normal and alternative font (called uniform.json) - no reload needed.

Minecraft:Main menu

• The "Singleplayer" button jumps directly to the "Create World" screen if there are no worlds to select.

Minecraft:Raw JSON text format

• The JSON color component now supports 6-digit hexadecimal colors to specify custom colors other than the 16 default Minecraft:color codes.
  • Example: /tellraw @a {"text":"Turquoise output","color":"#00ff88"}
• The hoverEvent chat component now uses the parameter contents, with contents depending on type:
  • For show_text - chat component
  • For show_item - either item id or object with fields id, count and tag (with last one being serialized NBT)
  • For show_entity - object with fields: id (UUID), name (chat component) and type (entity type resource location)
  • The value argument is now deprecated, but still supported.

Minecraft:Tags

• Changed the wall_post_override block tag to include the banners and pressure_plates block tags.

UI

• Changed checkbox texture.

World save format

• Saving level.dat now uses randomly-named temporary files (instead of using level.dat_new every time).
• player/*.dat are now saved in a way similar to level.dat (including leaving .dat_old files).