Minecraft:Java Edition 20w49a

20w49a is the fourth Minecraft:snapshot for Minecraft:Java Edition 1.17, released on December 2, 2020,<ref>Template:Snap</ref> which adds Minecraft:sculk sensors, the Minecraft:dripstone caves biome, and the ability to expand the world height limit and fixes bugs.

Additions

Blocks

File:Sculk Sensor JE1.gif Minecraft:Sculk sensor

• A new redstone component.
• Detects vibrations, and emits a redstone signal.
• Emits a different strength if connected to a Minecraft:comparator, and the signal strength is based on the vibration's frequency.
• Vibrations can be occluded using Minecraft:wool blocks.
• Can only be obtained via the Minecraft:Creative inventory or commands such as Template:Cmd.

World generation

Template:BiomeLink

• A new underground Minecraft:biome.
• Made up of primarily Minecraft:dripstone blocks and Minecraft:stone, with large clusters of dripstone blocks hanging from the ceiling, Minecraft:pointed dripstone on the floor and ceiling and many pools of water.
• Does not generate naturally in normal worlds, and can only be generated using Minecraft:buffet worlds with "Dripstone caves" selected as the source biome or using Minecraft:custom world.

Gameplay

Minecraft:Death messages

• Added death messages for being skewered by a falling stalactite:
  • "<player> was skewered by a falling stalactite"
  • "<player> was skewered by a falling stalactite whilst fighting <entity>"

Minecraft:Particles

• New particle types: vibration and dust_color_transition

General

Minecraft:Tags

• Added the dripstone_replaceable_blocks block tag.
  • Contains the base_stone_overworld block tag and dirt.
  • Used in dripstone generation to determine what dripstone can replace and what pointed dripstone can generate on.
• Added the occludes_vibration_signals block tag.
  • Contains the wool block tag.
  • Blocks in this tag prevent sculk sensors from hearing vibrations if the block is between the sculk sensor and the vibration.
• Added new game_events tag type.
• Added the ignore_vibrations_stepping_carefully game event tag.
  • Contains the step, falling, and shooting projectile events.
  • Game events in this tag are ignored by sculk sensors if the source entity is sneaking.
• Added the vibrations game event tag.
  • Contains every game event.
  • Game events in this tag trigger sculk sensors.

Changes

Blocks

Minecraft:Pointed dripstone

• When in a dimension with ultrawarm set to true, such as the Minecraft:Nether, downwards facing dripstone creates lava particles instead of water particles.

Items

Minecraft:Bundle

• Fullness is now always shown even if Minecraft:advanced tooltips are disabled.

Gameplay

Minecraft:Absorption effect

• The yellow absorption hearts now stay yellow if the player has the Minecraft:Poison or Wither effects, instead of appearing empty.

Minecraft:Freezing

• Frozen hearts now appear in Minecraft:Hardcore mode.
  • However, they appear the same as normal frozen hearts.

General

Minecraft:Custom dimensions

• Added height and min_y variables to dimension types, allowing for the height limit to be increased in custom world settings.
  • The Minecraft:void now starts 64 blocks below min_y.

Servers

• Removed the max-build-height server setting.