minecraft_protocol/versions/1.14.md

1.14.x — Village & Pillage

Protocols: 477 (1.14), 480 (1.14.1), 485 (1.14.2), 490 (1.14.3), 498 (1.14.4) Release dates: 1.14 — 2019-04-23 · 1.14.1 — 2019-05-13 · 1.14.2 — 2019-05-27 · 1.14.3 — 2019-06-24 · 1.14.4 — 2019-07-19 Minecraft wiki release articles:

• https://minecraft.wiki/w/Java_Edition_1.14 (fetched 2026-06-19) — release date 2019-04-23, protocol 477, data version 1952, resource/data pack format 4
• https://minecraft.wiki/w/Java_Edition_1.14.1 (fetched 2026-06-19) — release date 2019-05-13, protocol 480, 62 bug fixes
• https://minecraft.wiki/w/Java_Edition_1.14.2 (fetched 2026-06-19) — release date 2019-05-27, protocol 485, lighting and chunk loading fixes
• https://minecraft.wiki/w/Java_Edition_1.14.3 (fetched 2026-06-19) — release date 2019-06-24, protocol 490, villager/trade fixes
• https://minecraft.wiki/w/Java_Edition_1.14.4 (fetched 2026-06-19) — release date 2019-07-19, protocol 498, performance improvements + BLOCK_BREAK_ACK Protocol version numbers confirmed: ProtocolVersion.java — register(477, "1.14"), register(480, "1.14.1"), register(485, "1.14.2"), register(490, "1.14.3"), register(498, "1.14.4") — /tmp/mcproto-refs/ViaVersion/api/src/main/java/com/viaversion/viaversion/api/protocol/version/ProtocolVersion.java; cross-checked against /tmp/mcproto-refs/minecraft-data/data/pc/1.14/, 1.14.1/, 1.14.3/, 1.14.4/. ViaVersion packages:
• v1_13_2to1_14 — /tmp/mcproto-refs/ViaVersion/common/src/main/java/com/viaversion/viaversion/protocols/v1_13_2to1_14/
• v1_14to1_14_1 — …/protocols/v1_14to1_14_1/
• v1_14_1to1_14_2 — …/protocols/v1_14_1to1_14_2/
• v1_14_2to1_14_3 — …/protocols/v1_14_2to1_14_3/
• v1_14_3to1_14_4 — …/protocols/v1_14_3to1_14_4/ minecraft-data sources: data/pc/1.13.2/, data/pc/1.14/, data/pc/1.14.1/, data/pc/1.14.3/, data/pc/1.14.4/ — /tmp/mcproto-refs/minecraft-data/

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Headline changes — Village & Pillage

1.14 (2019-04-23) carries the largest single-version protocol change-set since 1.13's Flattening. Gameplay is dominated by the villager/trading rework and new Village & Pillage mobs (pillager, ravager, wandering trader, fox, panda), but the protocol impact is equally substantial:

1. Chunk lighting separated. In 1.13 chunk light data traveled inside the Chunk Data packet. In 1.14 light is pulled into its own Update Light packet (0x24), sent before or alongside Level Chunk (0x21). The chunk packet itself now carries an NBT heightmap compound (keys MOTION_BLOCKING and WORLD_SURFACE, each a 9-bit-per-cell long-array) that was absent in 1.13. Source: WorldPacketRewriter1_14.java (full chunk handler and synthetic LIGHT_UPDATE injection) and minecraft-data data/pc/1.14/protocol.json field heightmaps.

2. Block position bit-field reordered. The 64-bit packed Position type reshuffled its bit layout. In 1.13.2 the 64 bits were [x:26][y:12][z:26] (Y in the middle). In 1.14 the layout is [x:26][z:26][y:12] (Y moved to the low bits). Source: minecraft-data top-level types.position in 1.13.2/protocol.json vs 1.14/protocol.json. ViaVersion remaps every position-carrying packet accordingly — WorldPacketRewriter1_14.java maps Types.BLOCK_POSITION1_8 → Types.BLOCK_POSITION1_14 on BLOCK_DESTRUCTION, BLOCK_ENTITY_DATA, BLOCK_EVENT, BLOCK_UPDATE, SET_DEFAULT_SPAWN_POSITION, and OPEN_SIGN_EDITOR.

3. Villager trade list reworked. The old 1.13 bed packet (which handled the player-sleeping animation) is gone; sleeping is now handled via entity data. Replacing it (and the old numeric-only trade list from 1.13's MC|TrList plugin channel) is the new Merchant Offers / trade_list packet (0x27). It carries per-trade fields: two input slots, one output slot, disabled flag, trade-use counters (nbTradeUses/maximumNbTradeUses), XP grant, special price, price multiplier, villager level, total experience, and isRegularVillager flag. Source: minecraft-data data/pc/1.14/protocol.json packet_trade_list; ClientboundPackets1_14.java:63 (MERCHANT_OFFERS 0x27).

4. New/removed packets. Seven new clientbound Play packets, three new serverbound Play packets, one removed clientbound:

   Dir	0x ID	Name	Status
   CB	0x24	update_light (LIGHT_UPDATE)	NEW
   CB	0x27	trade_list (MERCHANT_OFFERS)	NEW
   CB	0x2D	open_book (OPEN_BOOK)	NEW
   CB	0x1F	open_horse_window (HORSE_SCREEN_OPEN)	NEW (split from OPEN_SCREEN)
   CB	0x40	update_view_position (SET_CHUNK_CACHE_CENTER)	NEW
   CB	0x41	update_view_distance (SET_CHUNK_CACHE_RADIUS)	NEW
   CB	0x50	entity_sound_effect (SOUND_ENTITY)	NEW
   CB	—	bed	REMOVED (→ entity data)
   SB	0x02	set_difficulty (CHANGE_DIFFICULTY)	NEW
   SB	0x10	lock_difficulty (LOCK_DIFFICULTY)	NEW
   SB	0x27	update_jigsaw_block (SET_JIGSAW_BLOCK)	NEW

   Source: diff of ClientboundPackets1_14.java vs ClientboundPackets1_13.java; ServerboundPackets1_14.java; minecraft-data play packet maps for 1.13.2 and 1.14.

5. Difficulty decoupled from Join Game / Respawn. In 1.13.2 difficulty was a field inside Login (Join Game) and Respawn packets. In 1.14 it is stripped from both and sent as a separate Change Difficulty packet (0x0D, existing slot) which gains a new boolean difficultyLocked field. ViaVersion synthesizes this packet when downgrading: WorldPacketRewriter1_14.java in the LOGIN and RESPAWN handlers each read the old difficulty byte and create a synthetic CHANGE_DIFFICULTY packet with difficultyLocked=false. Source: WorldPacketRewriter1_14.java; minecraft-data packet_difficulty type (1.14 adds difficultyLocked: bool); PlayerPacketRewriter1_14.java comments ("Added in 19w11a").

6. Login (Join Game) gains viewDistance. The 1.14 login packet has a new viewDistance: varint field after levelType. Source: minecraft-data data/pc/1.14/protocol.json packet_login; WorldPacketRewriter1_14.java line wrapper.write(Types.VAR_INT, WorldPacketRewriter1_14.SERVERSIDE_VIEW_DISTANCE).

7. Map locked flag. The Map Item Data packet gains a locked: boolean field (added in 19w02a, defaults false for old maps). Source: WorldPacketRewriter1_14.java MAP_ITEM_DATA handler.

8. Massive packet ID renumbering. With 7 new clientbound packets inserted throughout the ID space, virtually every Play clientbound packet above 0x13 has a different ID in 1.14 vs 1.13.2. Proxies and ViaVersion must remap all IDs. Notable shifts include open_window moving from 0x14 to 0x2E, nbt_query_response from 0x1D to 0x54 (jumping 55 slots), sound_effect from 0x4D to 0x51. Source: minecraft-data ID maps for 1.13.2 and 1.14 (full shift list available above in research data).

9. Entity data: new Pose type, villager data restructure, new entities. A new entity data type Pose (varint enum: Standing=0, FallFlying=1, Sleeping=2, Swimming=3, SpinAttack=4, Sneaking=5) replaces the old per-entity boolean flags for crouching/swimming/sleeping. Villager entity data (index 15) changes from a single profession integer to a compound VillagerData struct (villager type, profession, level). New entities added to the registry: Cat (split from Ocelot), Pillager, Ravager, Wandering Trader, Trader Llama, Fox. PLAYER_SLEEP clientbound packet is eliminated; sleeping is now communicated via entity metadata index 12 (optionalBlockPosition). Source: EntityPacketRewriter1_14.java (registerRewrites — filter for ENTITY, LIVING_ENTITY pose index, VILLAGER index 15 → VillagerData, OCELOT removals, ABSTRACT_RAIDER celebrating index); EntityTypes1_14.

10. nbt:compound_tag argument type rename. In command trees (Declare Commands / COMMANDS packet), the argument type minecraft:nbt was renamed to minecraft:nbt_compound_tag. Source: Protocol1_13_2To1_14.java CommandRewriter override of handleArgumentType.

11. Fluid tags sent in Update Tags. The Update Tags packet gains a fourth section for fluid tags (in addition to block/item/entity tags). Source: Protocol1_13_2To1_14.java tagRewriter handler; VV adds fluid tag registry type and appends entity tags.

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Play state — clientbound packet table (1.14, protocol 477)

Full list from minecraft-data data/pc/1.14/protocol.json play.toClient and ClientboundPackets1_14.java:

ID	Name (minecraft-data)	ViaVersion name
0x00	spawn_entity	ADD_ENTITY
0x01	spawn_entity_experience_orb	ADD_EXPERIENCE_ORB
0x02	spawn_entity_weather	ADD_GLOBAL_ENTITY
0x03	spawn_entity_living	ADD_MOB
0x04	spawn_entity_painting	ADD_PAINTING
0x05	named_entity_spawn	ADD_PLAYER
0x06	animation	ANIMATE
0x07	statistics	AWARD_STATS
0x08	block_break_animation	BLOCK_DESTRUCTION
0x09	tile_entity_data	BLOCK_ENTITY_DATA
0x0A	block_action	BLOCK_EVENT
0x0B	block_change	BLOCK_UPDATE
0x0C	boss_bar	BOSS_EVENT
0x0D	difficulty	CHANGE_DIFFICULTY
0x0E	chat	CHAT
0x0F	multi_block_change	CHUNK_BLOCKS_UPDATE
0x10	tab_complete	COMMAND_SUGGESTIONS
0x11	declare_commands	COMMANDS
0x12	transaction	CONTAINER_ACK
0x13	close_window	CONTAINER_CLOSE
0x14	window_items	CONTAINER_SET_CONTENT
0x15	craft_progress_bar	CONTAINER_SET_DATA
0x16	set_slot	CONTAINER_SET_SLOT
0x17	set_cooldown	COOLDOWN
0x18	custom_payload	CUSTOM_PAYLOAD
0x19	named_sound_effect	CUSTOM_SOUND
0x1A	kick_disconnect	DISCONNECT
0x1B	entity_status	ENTITY_EVENT
0x1C	explosion	EXPLODE
0x1D	unload_chunk	FORGET_LEVEL_CHUNK
0x1E	game_state_change	GAME_EVENT
0x1F	open_horse_window (NEW)	HORSE_SCREEN_OPEN
0x20	keep_alive	KEEP_ALIVE
0x21	map_chunk	LEVEL_CHUNK
0x22	world_event	LEVEL_EVENT
0x23	world_particles	LEVEL_PARTICLES
0x24	update_light (NEW)	LIGHT_UPDATE
0x25	login	LOGIN
0x26	map	MAP_ITEM_DATA
0x27	trade_list (NEW)	MERCHANT_OFFERS
0x28	rel_entity_move	MOVE_ENTITY_POS
0x29	entity_move_look	MOVE_ENTITY_POS_ROT
0x2A	entity_look	MOVE_ENTITY_ROT
0x2B	entity	MOVE_ENTITY
0x2C	vehicle_move	MOVE_VEHICLE
0x2D	open_book (NEW)	OPEN_BOOK
0x2E	open_window	OPEN_SCREEN
0x2F	open_sign_entity	OPEN_SIGN_EDITOR
0x30	craft_recipe_response	PLACE_GHOST_RECIPE
0x31	abilities	PLAYER_ABILITIES
0x32	combat_event	PLAYER_COMBAT
0x33	player_info	PLAYER_INFO
0x34	face_player	PLAYER_LOOK_AT
0x35	position	PLAYER_POSITION
0x36	unlock_recipes	RECIPE
0x37	entity_destroy	REMOVE_ENTITIES
0x38	remove_entity_effect	REMOVE_MOB_EFFECT
0x39	resource_pack_send	RESOURCE_PACK
0x3A	respawn	RESPAWN
0x3B	entity_head_rotation	ROTATE_HEAD
0x3C	select_advancement_tab	SELECT_ADVANCEMENTS_TAB
0x3D	world_border	SET_BORDER
0x3E	camera	SET_CAMERA
0x3F	held_item_slot	SET_CARRIED_ITEM
0x40	update_view_position (NEW)	SET_CHUNK_CACHE_CENTER
0x41	update_view_distance (NEW)	SET_CHUNK_CACHE_RADIUS
0x42	scoreboard_display_objective	SET_DISPLAY_OBJECTIVE
0x43	entity_metadata	SET_ENTITY_DATA
0x44	attach_entity	SET_ENTITY_LINK
0x45	entity_velocity	SET_ENTITY_MOTION
0x46	entity_equipment	SET_EQUIPPED_ITEM
0x47	experience	SET_EXPERIENCE
0x48	update_health	SET_HEALTH
0x49	scoreboard_objective	SET_OBJECTIVE
0x4A	set_passengers	SET_PASSENGERS
0x4B	teams	SET_PLAYER_TEAM
0x4C	scoreboard_score	SET_SCORE
0x4D	spawn_position	SET_DEFAULT_SPAWN_POSITION
0x4E	update_time	SET_TIME
0x4F	title	SET_TITLES
0x50	entity_sound_effect (NEW)	SOUND_ENTITY
0x51	sound_effect	SOUND
0x52	stop_sound	STOP_SOUND
0x53	playerlist_header	TAB_LIST
0x54	nbt_query_response	TAG_QUERY
0x55	collect	TAKE_ITEM_ENTITY
0x56	entity_teleport	TELEPORT_ENTITY
0x57	advancements	UPDATE_ADVANCEMENTS
0x58	entity_update_attributes	UPDATE_ATTRIBUTES
0x59	entity_effect	UPDATE_MOB_EFFECT
0x5A	declare_recipes	UPDATE_RECIPES
0x5B	tags	UPDATE_TAGS

Removed vs 1.13.2: bed (0x33 in 1.13.2) — replaced by entity data.

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Play state — serverbound packet table (1.14, protocol 477)

From ServerboundPackets1_14.java and minecraft-data data/pc/1.14/protocol.json play.toServer:

ID	Name	Notes
0x00	teleport_confirm	unchanged
0x01	query_block_nbt	unchanged (BLOCK_ENTITY_TAG_QUERY)
0x02	set_difficulty	NEW — CHANGE_DIFFICULTY
0x03	chat	unchanged
0x04	client_command	unchanged (CLIENT_COMMAND)
0x05	settings	unchanged (CLIENT_INFORMATION)
0x06	tab_complete	unchanged (COMMAND_SUGGESTION)
0x07	transaction	unchanged (CONTAINER_ACK)
0x08	enchant_item	unchanged (CONTAINER_BUTTON_CLICK)
0x09	window_click	unchanged (CONTAINER_CLICK)
0x0A	close_window	unchanged (CONTAINER_CLOSE)
0x0B	custom_payload	unchanged
0x0C	edit_book	unchanged
0x0D	query_entity_nbt	unchanged (ENTITY_TAG_QUERY)
0x0E	use_entity	unchanged (INTERACT)
0x0F	keep_alive	unchanged
0x10	lock_difficulty	NEW — LOCK_DIFFICULTY
0x11–0x1C	movement packets	unchanged
0x1D	crafting_book_data	unchanged (RECIPE_BOOK_UPDATE)
0x1E	name_item	unchanged (RENAME_ITEM)
0x1F	resource_pack_receive	unchanged (RESOURCE_PACK)
0x20	advancement_tab	unchanged (SEEN_ADVANCEMENTS)
0x21	select_trade	unchanged (SELECT_TRADE)
0x22	set_beacon_effect	unchanged (SET_BEACON)
0x23	held_item_slot	unchanged (SET_CARRIED_ITEM)
0x24	update_command_block	unchanged (SET_COMMAND_BLOCK)
0x25	update_command_block_minecart	unchanged (SET_COMMAND_MINECART)
0x26	set_creative_slot	unchanged (SET_CREATIVE_MODE_SLOT)
0x27	update_jigsaw_block	NEW — SET_JIGSAW_BLOCK
0x28	update_structure_block	unchanged (SET_STRUCTURE_BLOCK)
0x29	update_sign	unchanged (SIGN_UPDATE)
0x2A	arm_animation	unchanged (SWING)
0x2B	spectate	unchanged (TELEPORT_TO_ENTITY)
0x2C	block_place	unchanged (USE_ITEM_ON)
0x2D	use_item	unchanged

ViaVersion cancels CHANGE_DIFFICULTY (0x02) and LOCK_DIFFICULTY (0x10) when downgrading to 1.13.2 (server doesn't understand them); also cancels SET_JIGSAW_BLOCK (0x27). Source: Protocol1_13_2To1_14.java lines 92-96.

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Packet format details — new packets

Update Light (CB 0x24)

Introduced to decouple lighting from chunk data. Sent before or alongside Level Chunk for full chunk loads.

VarInt  chunkX
VarInt  chunkZ
VarInt  skyLightMask       // bitmask of sections with sky light (bits 0..17, sections -1..16)
VarInt  blockLightMask     // bitmask of sections with block light
VarInt  emptySkyLightMask  // sections where sky light should be set to all-zeros
VarInt  emptyBlockLightMask
// Followed by skyLight arrays for each set bit in skyLightMask (2048 bytes each)
// Then blockLight arrays for each set bit in blockLightMask (2048 bytes each)

Source: minecraft-data data/pc/1.14/protocol.json packet_update_light; WorldPacketRewriter1_14.java LEVEL_CHUNK handler (synthetic LIGHT_UPDATE construction — 18-bit mask for 18 sections including sub-zero and above-255 virtual sections).

Level Chunk (CB 0x21) — format change

In 1.13.2 the chunk packet carried light nibble arrays inside each ChunkSection. In 1.14 the light is removed from chunk sections and the packet gains an NBT heightmaps compound:

// 1.13.2 map_chunk:
Int32   x, z
Boolean groundUp
VarInt  bitMap
Buffer  chunkData          // sections include sky/block light nibbles
NBT[]   blockEntities

// 1.14 map_chunk:
Int32   x, z
Boolean groundUp
VarInt  bitMap
NBT     heightmaps         // NEW: compound with MOTION_BLOCKING and WORLD_SURFACE long-arrays
Buffer  chunkData          // sections no longer carry light
NBT[]   blockEntities

Source: minecraft-data data/pc/1.13.2/protocol.json vs data/pc/1.14/protocol.json packet_map_chunk; WorldPacketRewriter1_14.java (builds heightmaps CompoundTag with 9-bit compact long-arrays via CompactArrayUtil.createCompactArray(9, 256, …) and strips section.setLight(null)).

Merchant Offers (CB 0x27) — new trade list

VarInt  windowId
u8      count
[count] Trade:
  Slot    inputItem1
  Slot    outputItem
  Boolean hasInputItem2
  Slot?   inputItem2      // present if hasInputItem2
  Boolean tradeDisabled
  Int32   nbTradeUses
  Int32   maximumNbTradeUses
  Int32   xp              // XP granted to villager per trade
  Int32   specialPrice    // price adjustment (negative = discount)
  Float32 priceMultiplier // multiplier for demand/reputation adjustment
VarInt  villagerLevel
VarInt  experience
Boolean isRegularVillager

Source: minecraft-data data/pc/1.14/protocol.json packet_trade_list.

Update View Position (CB 0x40) and Update View Distance (CB 0x41) — new view management

// Update View Position (SET_CHUNK_CACHE_CENTER):
VarInt  chunkX
VarInt  chunkZ

// Update View Distance (SET_CHUNK_CACHE_RADIUS):
VarInt  viewDistance

Both are new in 1.14 (added in 19w13a snapshots). ViaVersion synthesizes Update View Position from chunk coordinates when downgrading, and sends a fixed SERVERSIDE_VIEW_DISTANCE = 64 for Update View Distance. Source: WorldPacketRewriter1_14.java sendViewDistancePacket() and chunk handler.

Open Book (CB 0x2D) — new

VarInt  hand   // 0 = main hand, 1 = off hand

Source: minecraft-data data/pc/1.14/protocol.json packet_open_book.

Open Horse Window (CB 0x1F) — split from Open Screen

Previously horse inventory was opened via the generic Open Screen packet with type "EntityHorse". In 1.14 it has its own packet:

u8      windowId
VarInt  nbSlots
Int32   entityId

ViaVersion converts the old OPEN_SCREEN with type EntityHorse into the new HORSE_SCREEN_OPEN packet. Source: ItemPacketRewriter1_14.java OPEN_SCREEN handler.

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Per-patch sub-sections

Protocol 477 — 1.14 (2019-04-23)

Base release. All changes described above vs 1.13.2. Key ViaVersion package: v1_13_2to1_14.

Git log (top commits affecting protocols/v1_13_2to1_14/):

2e91b841b Automatically call mapTypes in entity rewriter
0121534e7 Deduplicate particle type fillers
8f8f5e72c Default rewriter registrations across protocols
a0b0ed4b6 Make <1.21.2 container id types consistent with Vanilla
c13b40a37 Add ParticleRewriter base
e436bbe37 Refactor dimension switch handling across all protocols
463381b84 Rename missing metadata references to entity data

Source: git -C /tmp/mcproto-refs/ViaVersion log --oneline -- common/src/main/java/com/viaversion/viaversion/protocols/v1_13_2to1_14/ — most recent commits are refactors; the original 1.14 implementation predates the VV shallow-clone window.

Notable implementation notes from ViaVersion source:

• Particle rewriter: The 1.14 particle type encoding changes slightly; ViaVersion uses ParticleType.Fillers.fill1_13_2(this, Types1_14.PARTICLE, true) to remap particle IDs. Source: Protocol1_13_2To1_14.java:106-107.
• Explosion negative-coordinate fix: When downgrading 1.14→1.13.2, negative explosion coordinates are truncated to integer (a Mojang bug workaround). Source: WorldPacketRewriter1_14.java EXPLODE handler.
• Health NaN fix: The 1.14 health entity data can send NaN for living entities; ViaVersion optionally clamps to 1.0F. Source: EntityPacketRewriter1_14.java LIVING_ENTITY index 8 handler.
• Arrow velocity separate packet: In 1.14, velocity in ADD_ENTITY (Spawn Object) is ignored for items and arrows; ViaVersion emits a synthetic SET_ENTITY_MOTION packet. Source: EntityPacketRewriter1_14.java ADD_ENTITY handler.

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Protocol 480 — 1.14.1 (2019-05-13)

What changed: Villager entity data gained a new index. No packet added or removed — the packet set is identical to 477 (Protocol1_14To1_14_1 maps ClientboundPackets1_14 → ClientboundPackets1_14 with no new packet enum). Primary protocol-level change: entity data index 15 added to both Villager and Wandering Trader entity types.

From ViaVersion v1_14to1_14_1:

• EntityPacketRewriter1_14_1.registerRewrites(): filter().type(EntityTypes1_14.VILLAGER).addIndex(15) and filter().type(EntityTypes1_14.WANDERING_TRADER).addIndex(15) — an extra entity data slot inserted at index 15 for both entity types. Source: /tmp/mcproto-refs/ViaVersion/common/src/main/java/com/viaversion/viaversion/protocols/v1_14to1_14_1/rewriter/EntityPacketRewriter1_14_1.java:79-80.
• The ADD_MOB and ADD_PLAYER packets are registered to handle entity tracking but no field changes exist.

The trade_list (MERCHANT_OFFERS) packet is identical between 1.14 and 1.14.1 (confirmed: minecraft-data structures match exactly). Source: data/pc/1.14/protocol.json vs data/pc/1.14.1/protocol.json packet_trade_list — identical.

Gameplay context: 62 bug fixes, villager pathfinding/AI improvements, performance work. No new blocks or entities.

Git log for v1_14to1_14_1/: commits are all ViaVersion internal refactors (bd4df2813, e965e9713, 501f65e21, 5286efde1, 75d86851c) — renaming, reformatting, no protocol logic changes.

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Protocol 485 — 1.14.2 (2019-05-27)

What changed: Version bump only at the protocol level; no packet structure changes vs 1.14.1. The Protocol1_14_1To1_14_2 class is an empty AbstractProtocol subclass with no registered packet handlers. Source: /tmp/mcproto-refs/ViaVersion/common/src/main/java/com/viaversion/viaversion/protocols/v1_14_1to1_14_2/Protocol1_14_1To1_14_2.java — the entire class body has no registerPackets() override.

Confirmed: minecraft-data has no data/pc/1.14.2/ directory (skipped — implies identical packet structure to 1.14.1).

Gameplay context: Lighting re-calculation when opening old worlds for the first time; debug screen shows server-side chunk counts; raiders restricted to fully-loaded chunks; 50+ bug fixes. No packet-level protocol change beyond the version number.

Git log for v1_14_1to1_14_2/: only cosmetic/rename commits (cff9a8715, 9f6e7fa4e, e965e9713).

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Protocol 490 — 1.14.3 (2019-06-24)

What changed: One MERCHANT_OFFERS (trade_list) packet field added: canRestock: boolean appended to the packet's trailing fields (after isRegularVillager). ViaVersion inserts a synthetic canRestock=isRegularVillager when translating down from 1.14.3 to 1.14.2.

From Protocol1_14_2To1_14_3.registerPackets():

registerClientbound(ClientboundPackets1_14.MERCHANT_OFFERS, wrapper -> {
    // … passthrough all trade fields …
    boolean regularVillager = wrapper.passthrough(Types.BOOLEAN);
    wrapper.write(Types.BOOLEAN, regularVillager); // new boolean added in pre-1
});

Source: /tmp/mcproto-refs/ViaVersion/common/src/main/java/com/viaversion/viaversion/protocols/v1_14_2to1_14_3/Protocol1_14_2To1_14_3.java:33-53.

Confirmed by minecraft-data: data/pc/1.14.3/protocol.json packet_trade_list has canRestock: bool as the last field; data/pc/1.14/protocol.json and data/pc/1.14.1/protocol.json do not.

Gameplay context: New gamerule disableRaids; protection enchantments mutually exclusive again; lantern placement on iron bars; item repair-by-crafting restored; villager panic behavior adjusted; 82 bug fixes.

Git log for v1_14_2to1_14_3/: internal refactors only — no protocol logic commits unique to this package.

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Protocol 498 — 1.14.4 (2019-07-19)

What changed: One new clientbound Play packet added: acknowledge_player_digging (BLOCK_BREAK_ACK) at ID 0x5C.

// Acknowledge Player Digging (CB 0x5C):
Position  location    // block position (new 1.14 format: [x:26][z:26][y:12])
VarInt    block       // block state ID at that location
VarInt    status      // dig status: 0=started, 1=cancelled, 2=finished
Boolean   successful  // whether the dig was acknowledged as successful

Source: minecraft-data data/pc/1.14.4/protocol.json packet_acknowledge_player_digging; ClientboundPackets1_14_4.java:116 — BLOCK_BREAK_ACK; // 0x5C is the only addition vs ClientboundPackets1_14.java.

ViaVersion Protocol1_14_3To1_14_4 translates the MERCHANT_OFFERS packet to inject a demand: i32 field (set to 0) into each trade entry:

registerClientbound(ClientboundPackets1_14.MERCHANT_OFFERS, wrapper -> {
    // … passthrough all existing fields …
    wrapper.write(Types.INT, 0); // demand value added in pre5
});

Source: /tmp/mcproto-refs/ViaVersion/common/src/main/java/com/viaversion/viaversion/protocols/v1_14_3to1_14_4/Protocol1_14_3To1_14_4.java:34-51.

Confirmed by minecraft-data: data/pc/1.14.4/protocol.json packet_trade_list each trade entry has demand: i32 after priceMultiplier; data/pc/1.14.3/protocol.json does not.

Total 1.14.4 MERCHANT_OFFERS trade entry fields (per-trade): inputItem1, outputItem, inputItem2?, tradeDisabled, nbTradeUses, maximumNbTradeUses, xp, specialPrice, priceMultiplier, demand → then packet-level: villagerLevel, experience, isRegularVillager, canRestock.

Gameplay context: Performance improvements (chunk loading at high speeds, leaf rendering); camera first-person pivot fix; /reload and /forceload accessible at permission level 2; villager behavior improvements; 54 bug fixes.

Git log for v1_14_3to1_14_4/: internal refactors only (cff9a8715, 9f6e7fa4e, 75d86851c, 5286efde1, 501f65e21, e965e9713); the functional MERCHANT_OFFERS and BLOCK_BREAK_ACK logic predates the shallow-clone window.

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Proxy and translation impact

Version-negotiation: Five distinct protocol numbers in a single minor release line (477/480/485/490/498) is unusual. A proxy supporting 1.14.x must negotiate all five and route each to the appropriate ViaVersion translation chain.

Light packet ordering: When a 1.14+ client connects to a 1.13.2 server via ViaVersion, the proxy must synthesize the Update Light packet from light data embedded in the chunk packet, and send it to the client before or alongside the Level Chunk packet. The ViaVersion WorldPacketRewriter1_14 does this by intercepting the 1.13 LEVEL_CHUNK packet, stripping light from each section (section.setLight(null) after building the synthetic light packet), and sending the light packet immediately before the chunk. Source: WorldPacketRewriter1_14.java LEVEL_CHUNK handler.

Block position format: Any proxy bridging 1.13.2 ↔ 1.14+ must reorder every Position field in every packet that carries one. The bit layout changed from [x:26][y:12][z:26] (1.13.2) to [x:26][z:26][y:12] (1.14+). Failure to remap results in silently wrong Y coordinates (shifted 14 bits left, producing wildly out-of-range block Y values). ViaVersion applies BLOCK_POSITION1_8 → BLOCK_POSITION1_14 on every positional packet. Source: WorldPacketRewriter1_14.java, PlayerPacketRewriter1_14.java.

Chunk center tracking: 1.14 clients require Update View Position (SET_CHUNK_CACHE_CENTER) to know which chunk column they are centered on; without it the client shows a rendering artifact with nearby chunks not loading. ViaVersion emits a synthetic SET_CHUNK_CACHE_CENTER whenever a chunk arrives that is more than SERVERSIDE_VIEW_DISTANCE (64) columns from the last known center. Source: WorldPacketRewriter1_14.java chunk handler entityTracker.isForceSendCenterChunk() check.

MERCHANT_OFFERS evolution across patches: The trade list packet changed three times across the 1.14.x line. A proxy bridging between 1.14.x sub-versions must account for each field addition in sequence:

Protocol	MERCHANT_OFFERS field added
477	Base: inputItem1/outputItem/inputItem2/tradeDisabled/nbTradeUses/maximumNbTradeUses/xp/specialPrice/priceMultiplier/villagerLevel/experience/isRegularVillager
480	No change to packet (entity data index 15 change for villager/wandering-trader)
485	No change
490	canRestock: bool appended after isRegularVillager
498	demand: i32 appended inside each trade entry after priceMultiplier

Entity data: villager profession mapping. When downgrading villager entity data from 1.14 to 1.13.2, ViaVersion must map the new VillagerData struct (type, profession, level) back to the old single-integer profession. The mapping is: farmer→5, librarian→9, cleric→4 (priest), armorer→1 (blacksmith), butcher→2, nitwit→11, none→0. This is lossy (the new villager type and level fields have no 1.13.2 equivalent). Source: EntityPacketRewriter1_14.java getNewProfessionId().

Ocelot/Cat split. 1.14 splits the Ocelot into Ocelot and Cat as separate entity types with different IDs. When downgrading from 1.14 a proxy must either map Cat back to Ocelot (ViaVersion default, with config option translateOcelotToCat) or spawn a pig as fallback. Source: EntityPacketRewriter1_14.java onMappingDataLoaded() and the 1.13→1.14 entity type registry.

BLOCK_BREAK_ACK (1.14.4 only): The new 0x5C packet in protocol 498 has no counterpart in 497 and below. A proxy must suppress or synthesize it appropriately. ViaVersion's Protocol1_14_3To1_14_4 registers a new ClientboundPackets1_14_4 enum that adds BLOCK_BREAK_ACK as the only addition beyond the 1.14.3 packet set. Source: ClientboundPackets1_14_4.java:116.

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Resolved verification notes

Release dates 1.14.1–1.14.4: Confirmed from minecraft.wiki article headers (fetched 2026-06-19): 1.14 = 2019-04-23, 1.14.1 = 2019-05-13, 1.14.2 = 2019-05-27, 1.14.3 = 2019-06-24, 1.14.4 = 2019-07-19. All five dates are consistent between wiki article headers and the ViaVersion ProtocolVersion.java registration order.

entity_sound_effect packet (CB 0x50) field structure: Confirmed from minecraft-data/data/pc/1.14/protocol.json packet_entity_sound_effect. Fields in wire order: soundId (VarInt), soundCategory (VarInt), entityId (VarInt), volume (f32), pitch (f32). Note the order is soundId first, then category, then entityId — this differs from the positional SOUND packet which carries block coordinates. Source: minecraft-data/data/pc/1.14/protocol.json.

Villager entity data index 15 added in 1.14.1 (addIndex(15)): ViaVersion EntityPacketRewriter1_14_1.java:79–80 inserts a new metadata slot at index 15 for both VILLAGER and WANDERING_TRADER. In 1.14.0 the native villager layout placed index 15 = Head shake timer (Abstract Villager, confirmed by ViaBackwards EntityPacketRewriter1_14.java:418: filter().type(EntityTypes1_14.VILLAGER).cancel(15); // Head shake timer) and index 16 = VillagerData (the profession int from 1.13.2 index 15 shifted +2 by the two addIndex() insertions in 1.14.0: +1 for ENTITY Pose at 6, +1 for LIVING_ENTITY bed position at 12). After addIndex(15) in 1.14.1 the new unknown slot occupies index 15 while head shake timer shifts to 16 and VillagerData shifts to 17. ViaBackwards EntityPacketRewriter1_14_1.java:93–96 drops slot 15 entirely when downgrading to 1.14.0 (cancel(15), no comment) and remaps slot 16→15 (the head shake timer back to its 1.14.0 position), confirming no 1.14.0 equivalent exists for slot 15. The new slot 15 in 1.14.1 is