Hello! Here is a new snapshot with tweaks to the new features, new advancements, new music and some long-awaited technical changes. For some time we've been working on a new faster light engine, and we are finally ready to share the result. Special thank you to the community for not only pointing out the issues with the game's light engine, but also to community members that have developed mods and plugins which have highlighted these performance challenges and served as an inspiration for our new implementation.

Please break it in all possible ways and report bugs!

New Features

Added new advancements for Trails & Tales
Added new Trails & Tales ambient music
Added a new music disc obtainable through archaeology

New advancements

Husbandry advancements

Smells interesting : Obtain a Sniffer Egg
Little sniffs : Feed a Snifflet (requires Smells interesting)
Planting the past : Plant any Sniffer seed (requires Little sniffs)

Adventure advancements

Respecting the remnants : Brush a Suspicious block to obtain a Pottery Sherd
Careful restoration : Make a Decorated Pot out of 4 Pottery Sherds (requires Respecting the remnants)
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 (requires Crafting a new look)

New ambient music

Added the following new music tracks by Aaron Cherof to Cherry Groves, Desert, Jungle, Badlands, and Flower Forest biomes
- A Familiar Room
- Bromeliad
- Crescent Dunes
- Echo in the Wind

New music disc

Added a new music disc which can be found by brushing suspicious blocks in Trail Ruins
- When put in a Jukebox, Relic by Aaron Cherof is played

Changes

Both types of Sculk Sensors now stay in their Cooldown phase for 10 ticks, with other phase timings being adjusted to compensate
Crafted Decorated Pots with at least one pattern now have a hover tooltip displaying the Sherd & Brick ingredients
Updated the credits
- Added the ability to scroll upwards by pressing the up arrow key

Sculk Sensor Phases

Sculk Sensors and Calibrated Sculk Sensors have three phases: Inactive, Active and Cooldown
The default phase is Inactive
- This phase lasts indefinitely until the block receives a vibration
- During this phase, the block is able to listen to nearby vibrations until one has been scheduled
When a scheduled vibration is received, the block switches to the Active phase
- This phase lasts 30 game ticks for Sculk Sensors, and 10 game ticks for Calibrated Sculk Sensors
- During this phase, the block stops listening to nearby vibrations, wiggles its tendrils and emits a redstone signal and light
After the Active phase has finished, the block switches to a Cooldown phase
- This phase lasts for 10 game ticks
- During this phase, the block keeps wiggling its tendrils, but no longer emits a redstone signal nor light
- Finally, once this phase is finished, the block will switch back to the Inactive phase
Previously, some of these phases had different timing values:
- Active: 40 game ticks for Sculk Sensors and 20 game ticks for Calibrated Sculk Sensors
- Cooldown: 1 game tick for both types of Sculk Sensors
These phase timings were tweaked so that it is less common for activated contraptions to recursively activate the Sculk Sensor that powered them

Technical Changes

The resource pack 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 (so M◌̆ now renders as M ̆)
- Added second level of organization of entries in credits.json on top of titles, called disciplines
Font textures are included in debug texture dump (F3 + S)
Added new font glyph providers: unihex and reference, removed legacy_unicode
Improved performance of the light engine

Fonts

New `unihex` glyph provider

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 will be discarded

New `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 will include all providers for a given font defined in all datapacks

Removed `legacy_unicode` glyph provider

legacy_unicode glyph provider has been removed
This functionality has been replaced by unihex provider

Fixed bugs in Snapshot 23w17a

MC-108045 Minecraft not using latest unifont unicode chart; characters are missing
MC-127394 Minecraft does not render characters in Unicode mb4 range
MC-172980 Block light updates don't cross chunk borders properly when updated
MC-197772 Missing textures in minecraft:uniform font
MC-225742 When light emitting blocks generate as ores, they do not emit light
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-261413 Particles spawned by brushes held by left-handed players move in the wrong direction
MC-261626 Reversed Comma doesn't render properly when using the Unicode font
MC-261900 Sniffers cannot properly pathfind into water while burning
MC-261938 Sniffer animation is not smooth on slime blocks
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

Minecraft Snapshot 23w17a