Java Edition 23w17a

23w17a is the fifth snapshot for Java Edition 1.20, released on April 26, 2023^[1], which adds a new music disc, new advancements, new music, and fixes bugs.

Music disc

• Added a new music disc by Aaron Cherof titled "Relic".
  • Can only be obtained when brushing suspicious gravels within trail ruins, with ¹⁄₁₂ chance appeared as a rare loot.
  • Gives a comparator output signal strength of 14 when in a Jukebox.

Advancements

• Added seven new advancements:
  • Smells interesting
    • Obtain a Sniffer Egg
  • Little sniffs
    • Feed a Snifflet
  • Planting the past
    • Plant any Sniffer seed
  • Crafting a new look
    • Craft a trimmed armor at a Smithing Table
  • Smithing with style
    • Apply these smithing templates at least once: Spire, Snout, Rib, Ward, Silence, Vex, Tide, Wayfinder
  • Respecting the remnants
    • Brush a Suspicious block to obtain a Pottery Sherd
  • Careful restoration
    • Make a Decorated Pot out of 4 Pottery Sherds

Font

• Added unihex glyph provider.
  • A new glyph provider for reading Unifont HEX files.
    • HEX format describes bitmap font glyphs.
      • Height of every glyph is 16 pixels.
      • Width of glyph can be 8, 16, 24 or 32 pixels.
    • Every line is made of two hexadecimal numbers separated by :.
    • First value describes codepoint - it must have 4, 5 or 6 hex digits.
    • Second value describes glyph as a stream of bits, line by line.
  • When rendering, empty columns on left and right side of glyph are removed.
    • Custom glyph widths can be set with size_overrides.
  • Provider requires two fields:
    • hex_file: Path to ZIP archive containing one or more *.hex files (files in archive with different extensions are ignored).
    • size_overrides: List of codepoint ranges that should have width different that auto-detected (based on empty space in glyph). Fields:
      • from, to: Start and end of codepoint range (inclusive).
      • left, right: Integers describing position of left-most and right-most columns of glyph in range.
        • Any bits in columns outside this range are discarded.
• Added reference glyph provider.
  • New glyph provider can be used to include providers from other fonts.
    • Providers are guaranteed to be loaded only once, no matter how many times they are included.
  • Provider has one field id, that describes other font to be included in currently loaded one.
    • Inclusion is performed after all fonts are loaded, so it includes all providers for a given font defined in all resource packs.

Loot tables

• Added sniffer_digging: contains torchflower_seeds and pitcher_pod.
  • Controls what can be found by sniffers when digging.

Music

• Added new ambient soundtracks, all by Aaron Cherof.^{[note 1]}
  • "A Familiar Room" plays in Survival mode (all biomes without biome-specific music), as well as the title screens.
  • "Bromeliad" plays in bamboo jungle, cherry grove, flower forest, forest, jungle, sparse jungle, as well as the menu screens.
  • "Crescent Dunes" plays in desert, all types of badlands, as well as the menu screens.
  • "Echo in the Wind" plays in cherry grove, flower forest, lush caves, all types of badlands, as well as the menu screens.

Tags

• Added following item tag:
  • #decorated_pot_ingredients: contains brick and #decorated_pot_sherds.

Calibrated sculk sensor

• Now lasts 10 game ticks when in active phase instead of 20.
• Now lasts 10 game ticks when in cooldown phase instead of 1.

Decorated pot

• The materials used in crafting are displayed on the tooltip now.

Sculk sensor

• Now lasts 30 game ticks when in active phase instead of 40.
• Now lasts 10 game ticks when in cooldown phase instead of 1.

Credits

• Updated to add some Mojang employees.
• Can be scrolled upwards by pressing ↑ Up now.

Debug screen

• Font textures are included in debug texture dump (F3 + S).

Music

• The places where the following existing music can be played are changed:^{[note 2]}
  • "Aerie", "Firebugs", and "Labyrinthine" can no longer be played in the menu screens, and all types of jungle biomes.

Resource packs

• Version is now 15, accounting for the font and credits update.
  • legacy_unicode glyph provider has been removed.
  • Bitmaps used by uniform font have been removed.
  • uniform font has been updated to use Unifont 15.0.01.
    • That changes shape of multiple characters, while also adding support for new ones.
    • Combining characters no longer include circle overlayed over them.
  • Added second level of organization of entries in credits.json on top of titles, called disciplines.

Tags

• Removed brick from #decorated_pot_sherds item tag.
• Added music_disc_relic to #music_discs item tag.

General

• Improved performance of the light engine.

32 issues fixed

From released versions before 1.20

• MC-30939 – Nether portal continues emitting light, even if portal is broken.
• MC-108045 – Minecraft not using latest unifont unicode chart; characters are missing.
• MC-127394 – Minecraft does not render characters in Unicode mb4 range.
• MC-166260 – Light from fire that has gone out lingers at the border of chunks.
• MC-172980 – Block light updates don't cross chunk borders properly when updated.
• MC-179867 – Unicode Characters swapped in Minecraft.
• MC-197772 – Missing textures in minecraft:uniform font.
• MC-199446 – Characters ︗ (U+FE17) and ︘ (U+FE18) are swapped in game.
• MC-213712 – "Ideographic Space" Unicode character is not displayed correctly.
• MC-225742 – When light emitting blocks generate as ores, they do not emit light.
• MC-234681 – Tai Viet characters are not supported.
• MC-241725 – In the credits, an opening parenthesis is missing for Riley Manns.
• MC-241730 – In the credits, a closing parenthesis is missing for Konrad Jówko.
• MC-241732 – In the credits, "Lionbridge" is misspelt in one place.
• MC-241733 – In the credits, "Insight" is misspelt in one place.
• MC-241741 – Certain names are listed twice in the credits.
• MC-241803 – credits.json: Line 2632 has typo in (C instead of O).
• MC-245819 – Lighting can still occasionally lag behind world generation.
• MC-249341 – Some Mojang employees are not mentioned in the credits.
• MC-249508 – Light emitted from cave vines and glow lichens upon world generation still sometimes doesn't propagate across chunk borders.
• MC-254506 – Font file of some Korean completed font area is wrong.
• MC-258926 – Space is no longer treated as padding in fonts.
• MC-260307 – Cherry Grove biome has empty music sound event.
• MC-261626 – Reversed Comma doesn't render properly when using the Unicode font.
• MC-261900 – Sniffers cannot properly pathfind into water while burning.

From the 1.20 development versions

• MC-261413 – Particles spawned by brushes held by left-handed players move in the wrong direction.
• MC-261938 – Sniffer animation is not smooth on slime blocks.

From the previous development version

• MC-261997 – Game crashes when generating new chunk / java.lang.IllegalStateException: Asking for biomes before we have biomes.
• MC-262012 – Telemetry Tooltip out of screen.
• MC-262022 – Tooltips get cut off at the bottom of the screen.
• MC-262024 – Sniffer eggs are sometimes spawned in the ground when sniffers breed.
• MC-262030 – Sniffers stand a bit too close to players that are tempting them.