Feature: 26.1, API 2.10.0 by onebeastchris · Pull Request #6271 · GeyserMC/Geyser

onebeastchris · 2026-03-29T13:31:11Z

Opening PR here to make it easier to track to-do's!

Mappings:

API:

Update component renames that we mirror 1:1

There is no ETA currently.

…nd component types changing.

* Update to Gradle 9.4.1 * Set toolchain JVM to 25 * Enable Architectury for Java 26.1 * Enable mod project directories * Uncomment geyser.modded-conventions.gradle.kts * Remove declared mappings line * Enable Fabric and NeoForge libraries * Remove mod prefix on dependency configurations * Remove namedElements configuration * Switch to dev.architectury.loom-no-remap * Remove remapJar and use shadowJar instead * asLong -> pack * displayClientMessage -> sendSystemMessage * displayClientMessage -> sendSystemMessage * Update DedicatedServerMixin for Java 26.1 * Target Java 25 instead of Java 21 * Fix file name issue * Update fabric.mod.json * Update neoforge.mods.toml

Copilot

Pull request overview

Updates Geyser’s protocol/mapping layer to target Minecraft 26.1 (API 2.10.0), including several MCProtocolLib-driven packet/component model changes and new/updated mapping data, while temporarily disabling modded (Fabric/NeoForge) builds.

Changes:

Bump protocol/library versions and adjust packet translators for renamed/changed serverbound/clientbound packets.
Add/adjust mappings/tags/properties (e.g., golden dandelion, new tags, noteblock instruments) and update registry/component hashing for new data shapes.
Introduce “world clock” registry + session-side clock rate tracking for time progression behavior.

Reviewed changes

Copilot reviewed 49 out of 50 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
settings.gradle.kts	Comments out Fabric/NeoForge/mod subprojects and their projectDir mappings.
gradle/libs.versions.toml	Bumps mcprotocollib + sets Minecraft version to 26.1; comments out modded toolchain entries.
core/src/main/java/org/geysermc/geyser/util/SettingsUtils.java	Preps gamerule batching (currently commented) and keeps existing settings form behavior.
core/src/main/java/org/geysermc/geyser/util/LoginEncryptionUtils.java	Switches login UI clock control to new session clock-ticking flag.
core/src/main/java/org/geysermc/geyser/translator/protocol/java/level/JavaSetTimeTranslator.java	Uses world clock registry updates + delegates Bedrock time sending to session helper.
core/src/main/java/org/geysermc/geyser/translator/protocol/java/level/JavaGameEventTranslator.java	Updates respawn command enum to renamed value.
core/src/main/java/org/geysermc/geyser/translator/protocol/bedrock/entity/player/BedrockInteractTranslator.java	Updates interaction/attack downstream packets to new MCPL packet types/signatures.
core/src/main/java/org/geysermc/geyser/translator/protocol/bedrock/BedrockShowCreditsTranslator.java	Updates respawn command enum to renamed value.
core/src/main/java/org/geysermc/geyser/translator/protocol/bedrock/BedrockRespawnTranslator.java	Updates respawn command enum to renamed value.
core/src/main/java/org/geysermc/geyser/translator/protocol/bedrock/BedrockInventoryTransactionTranslator.java	Updates attack/interact packets and instrument component types for new MCPL models.
core/src/main/java/org/geysermc/geyser/session/cache/tags/ItemTag.java	Adds/removes item tags to match updated Java tag set.
core/src/main/java/org/geysermc/geyser/session/cache/tags/EnchantmentTag.java	Removes special trades tags (now absent/changed upstream).
core/src/main/java/org/geysermc/geyser/session/cache/tags/BlockTag.java	Adds/removes block tags to match updated Java tag set.
core/src/main/java/org/geysermc/geyser/session/cache/registry/JavaRegistries.java	Adds WORLD_CLOCK registry key.
core/src/main/java/org/geysermc/geyser/session/cache/RegistryCache.java	Registers WORLD_CLOCK via unit registry reader.
core/src/main/java/org/geysermc/geyser/session/cache/BlockBreakHandler.java	Updates item frame “attack” to use ServerboundAttackPacket.
core/src/main/java/org/geysermc/geyser/session/GeyserSession.java	Adds clock-rate-based world ticking + time packet helper; removes some start game fields.
core/src/main/java/org/geysermc/geyser/registry/populator/conversion/GoldenDandelionConverter.java	Adds block palette conversion for golden dandelion to dandelion.
core/src/main/java/org/geysermc/geyser/registry/populator/ItemRegistryPopulator.java	Applies java-only item remaps for older Bedrock palettes (golden dandelion).
core/src/main/java/org/geysermc/geyser/registry/populator/CustomItemRegistryPopulator.java	Updates attack range component field names to new API.
core/src/main/java/org/geysermc/geyser/registry/populator/BlockRegistryPopulator.java	Adds golden dandelion converter to selected palettes.
core/src/main/java/org/geysermc/geyser/network/GameProtocol.java	Overrides MCPL codec version string/protocol version for 26.1.
core/src/main/java/org/geysermc/geyser/level/block/property/Properties.java	Updates noteblock instrument enum values (adds trumpet variants).
core/src/main/java/org/geysermc/geyser/level/block/Blocks.java	Adds GOLDEN_DANDELION blocks and potted variant; formatting adjustments.
core/src/main/java/org/geysermc/geyser/level/JavaDimension.java	Updates custom-dimension inference keys + adds default_clock field.
core/src/main/java/org/geysermc/geyser/level/GameRule.java	Updates TODO note for gamerule sourcing.
core/src/main/java/org/geysermc/geyser/item/type/ShulkerBoxItem.java	Updates container component type to List<Optional>.
core/src/main/java/org/geysermc/geyser/item/type/GoatHornItem.java	Updates instrument component type to Holder.
core/src/main/java/org/geysermc/geyser/item/hashing/RegistryHasher.java	Updates hashers for new instrument/jukebox/optional-container representations; adds variant registries.
core/src/main/java/org/geysermc/geyser/item/hashing/DataComponentHashers.java	Updates component hashing for new holder/id shapes and renamed attack range accessors.
core/src/main/java/org/geysermc/geyser/item/Items.java	Adds GOLDEN_DANDELION item; adjusts cauldron block ordering.
core/src/main/java/org/geysermc/geyser/inventory/recipe/TrimRecipe.java	Reworks trim material provider lookup to use Holder.
core/src/main/java/org/geysermc/geyser/inventory/item/GeyserInstrument.java	Updates instrument conversion to use Holder.
core/src/main/java/org/geysermc/geyser/entity/type/living/animal/ArmadilloEntity.java	Overrides baby scale.
core/src/main/java/org/geysermc/geyser/entity/type/living/DolphinEntity.java	Overrides baby scale.
core/src/main/java/org/geysermc/geyser/entity/type/living/AgeableEntity.java	Adjusts default baby scale.
core/src/main/java/org/geysermc/geyser/entity/type/ThrowableEggEntity.java	Updates chicken variant component reading to new integer id form.
core/src/main/java/org/geysermc/geyser/command/defaults/StatisticsCommand.java	Updates stats request command enum to renamed value.
core/build.gradle.kts	Comments out loom-companion plugin.
build-logic/src/main/kotlin/geyser.modded-conventions.gradle.kts	Entire modded conventions logic commented out (disables behavior).
build-logic/build.gradle.kts	Comments out architectury/loom/loom-companion build-logic dependencies.

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Copilot · 2026-03-29T13:38:03Z

@@ -36,6 +37,10 @@
 import org.geysermc.geyser.text.GeyserLocale;
 import org.geysermc.geyser.text.MinecraftLocale;
 import org.geysermc.mcprotocollib.protocol.data.game.setting.Difficulty;
+import org.geysermc.mcprotocollib.protocol.packet.ingame.serverbound.ServerboundSetGameRulePacket;
+
+import java.util.HashMap;
+import java.util.Map;


The imports added for Key/ServerboundSetGameRulePacket/HashMap/Map are currently unused because the related gamerule batching code is commented out. Unused imports are a Java compile error, so this file will not compile as-is. Please remove these imports or re-enable the code that uses them.

Copilot · 2026-03-29T13:38:04Z

 import org.cloudburstmc.protocol.bedrock.data.TrimPattern;
+import org.geysermc.geyser.api.util.Unit;
 import org.geysermc.geyser.entity.type.living.animal.FrogEntity;


org.geysermc.geyser.api.util.Unit is imported but not referenced anywhere in this file. Unused imports are a Java compile error; please remove it.

Copilot

Pull request overview

Copilot reviewed 55 out of 55 changed files in this pull request and generated 4 comments.

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TL;DR - no more remap jar task, so JiJ is done in the jar task; the shadowJar doesn't use the jar task as input but rather source sets. Hence, we manually merge the two!

* Update to Shadow 9.4.1 * Remove unused import * Revert "Remove unused import" This reverts commit 5f876cf. * Update MCProtocolLib version

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stuff (yeah this isn't a good commit message I'll get back to this later who knows)

…omponent hashing working

…test, add primitives test

…arity, use effects hashing gametests

…, custom model data, tooltip display component hashing tests

… protection, enchantable, equippable, food, glider, item_name, piercing weapon, repairable, swing animation, tool, tooltip style, use_cooldown, use_remainder, weapon component hashing

- "with" translatable text component args - score text component not being wrapped in "score" - piercing weapon component encoding the wrong value - custom sounds not encoding float when it is 16 - item stacks always encoding count, even when it is 1 - adventure mode predicates not encoding nbt as a string

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- block entity data, bucket entity data, entity data - banner patterns - base color - bees - block state - blocks attacks - break sound - bundle contents - charged projectiles - container - container loot - debug stick state - dye - firework explosion - fireworks - instrument - jukebox playable - kinetic weapon - lock - lodestone tracker - map decorations - wolf collar, tropical fish colors, cat collar, sheep color, shulker color - villager variant, wolf (sound) variant, fox variant, salmon size, parrot variant, tropical fish pattern, mooshroom variant, rabbit variant, pig variant, cow variant, chicken variant, zombie nautilus variant, frog variant, horse variant, painting variant, llama variant, axolotl variant, cat variant - note block sound - pot decorations - potion contents - dyed color, map color, map id, potion duration scale, ominous bottle amplifier - profile - provides banner patterns - provides trim material - recipes - suspicious stew effects - trim - writable book content - written book content

- Encode the right field in kinetic_weapon - Use default value for "generation" in written_book_content - Lowercase player model type in resolvable_profile - Bee occupant entity data in entity_data field - NBT string serialisation with child maps or lists

…ser, add hashers and testsfor missing components - pig, cow, chicken and cat sound variants

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…abstract types, bump adventure for release

… fuzzy hash NBT and object text components

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I'm too tired for this

Novampr and others added 7 commits March 25, 2026 13:44

Start on 26.1, fix hitboxes, update blocks, items and tags

5f9fbe3

Start on 26.1, fix various hitbox sizes, adjust various java packet a…

58c6603

…nd component types changing.

Update mappings

4d09ef6

Update mappings for block shapes

09c7cdd

Update block properties, fix loading block registry

95a2a7b

Merge remote-tracking branch 'upstream/master' into feat/26.1

effb253

Add fallback mapping for golden_dandelion item on 1.21.130 / 26.0

fe1a9f9

Copilot AI review requested due to automatic review settings March 29, 2026 13:31

Copilot started reviewing on behalf of onebeastchris March 29, 2026 13:31 View session

hasankayra04 and others added 2 commits March 29, 2026 15:31

Update Java version in README (#6270)

5dfd49d

Copilot AI reviewed Mar 29, 2026

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Bump to Java 21 project-wide

ee5f111

onebeastchris added the Work in Progress The issue is currently being worked on. label Mar 29, 2026

onebeastchris marked this pull request as draft March 29, 2026 13:53

onebeastchris and others added 7 commits March 29, 2026 15:54

Revert fabric.mod.json change

3b0c9c7

Bump cloud

6706c63

Some hasher fixes

f6716f8

Add translation for low disk space warning

7d5d912

Revert "revert fabric.mod.json change"

dbc4142

Parse dye data component in ItemStackParser

1f5329e

Bump MCPL, resolves dye color reading

7ae010d

onebeastchris marked this pull request as ready for review March 29, 2026 20:32

Copilot AI review requested due to automatic review settings March 29, 2026 20:32

Merge branch 'master' into feat/26.1

e46f28c

Copilot started reviewing on behalf of onebeastchris March 29, 2026 20:32 View session

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Comment thread .../src/main/java/org/geysermc/geyser/translator/protocol/java/level/JavaSetTimeTranslator.java

Comment thread .github/workflows/build.yml

Comment thread .github/workflows/build-remote.yml

Comment thread build-logic/src/main/kotlin/geyser.modded-conventions.gradle.kts

onebeastchris and others added 3 commits March 30, 2026 11:33

Bump annotation processors' supported source version too

082ba3a

Initial work on resolving fabric/neoforge build script issues

df97c0d

TL;DR - no more remap jar task, so JiJ is done in the jar task; the shadowJar doesn't use the jar task as input but rather source sets. Hence, we manually merge the two!

Update Shadow Gradle Plugin and MCProtocolLib (#6284)

f5c539c

* Update to Shadow 9.4.1 * Remove unused import * Revert "Remove unused import" This reverts commit 5f876cf. * Update MCProtocolLib version

Copilot AI reviewed Apr 6, 2026

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SleepyPopp mentioned this pull request Apr 7, 2026

Fix Paper 26.1.1 startup compatibility #6289

Closed

onebeastchris and others added 13 commits April 8, 2026 08:32

Preparations for using gametest framework

42488f1

Initial work on using Minecraft gametests to test component hashing

ccafa76

Set up proper gametest sourceset within Fabric module

248b60f

stuff (yeah this isn't a good commit message I'll get back to this later who knows)

Implement JavaRegistry(Provider) for game tests, get basic test for c…

61fce61

…omponent hashing working

Rebase remains

ff522d0

Minecraft 26.1 gametest fixes

4c163b8

Some codec shenanigans to allow multiple components in a single hash …

0b12ed2

…test, add primitives test

Custom name component hashing gametests

b41177d

Damage type, enchantments, item model, lore, minimum attack charge, r…

1827f52

…arity, use effects hashing gametests

Some game test improvements, attribute modifiers, can place/can break…

cc7ffe9

…, custom model data, tooltip display component hashing tests

Added gametests for attack range, consumable, damage resistant, death…

c8091af

… protection, enchantable, equippable, food, glider, item_name, piercing weapon, repairable, swing animation, tool, tooltip style, use_cooldown, use_remainder, weapon component hashing

Allow gametests to be optional, turn failing tests optional for now

8455403

Copilot AI review requested due to automatic review settings April 8, 2026 18:53

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eclipseisoffline added 5 commits April 9, 2026 10:50

Add gametest for testing all hashable components can be hashed in Gey…

2385729

…ser, add hashers and testsfor missing components - pig, cow, chicken and cat sound variants

Some clean ups

07a5757

DataComponentHashers cleanup

b7847c5

Copilot AI review requested due to automatic review settings April 15, 2026 12:13

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eclipseisoffline added 3 commits April 15, 2026 18:00

Adventure 5.0.0

0a22e8e

Properly hash NBT source in NBT text components, refactor hashing of …

7f8dff2

…abstract types, bump adventure for release

Fix EnumMapDispatchHasher instanceof check, ConsumeEffectType hasher,…

5e3089c

… fuzzy hash NBT and object text components

Copilot AI review requested due to automatic review settings April 15, 2026 19:38

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Javadoc fixes

f4021dc

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Feature: 26.1, API 2.10.0#6271

Feature: 26.1, API 2.10.0#6271
onebeastchris wants to merge 50 commits intomasterfrom
feat/26.1

onebeastchris commented Mar 29, 2026 •

edited

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onebeastchris commented Mar 29, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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onebeastchris commented Mar 29, 2026 •

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