Difference between revisions of "Pre-release protocol"

Revision as of 19:57, 25 April 2024

This page documents the changes from the last stable Minecraft release (currently 1.20.4, protocol 765) to the current pre-release (currently 24w13a, protocol Snapshot 182). Note that this page contains bleeding-edge information that may not be completely or correctly documented.

One who wishes to commandeer the merging of this into Protocol when an update is made must be sure to respect any changes that may have occurred to the respective packets there.

1 Contents
- 1.1 Data types
- 1.2 Packets
2 New/modified data types
3 Entity Metadata
4 Block Actions
5 Inventories
6 Plugin Channels
7 Handshake
- 7.1 Serverbound
  - 7.1.1 Handshake
8 Status
- 8.1 Clientbound
- 8.2 Serverbound
9 Login
- 9.1 Clientbound
  - 9.1.1 Encryption Request
  - 9.1.2 Cookie Request (login)
- 9.2 Serverbound
  - 9.2.1 Cookie Response (login)
10 Configuration
- 10.1 Clientbound
- 10.2 Serverbound
  - 10.2.1 Cookie Response (configuration)
  - 10.2.2 Serverbound Known Packs
11 Play
- 11.1 Clientbound
- 11.2 Serverbound

Data types

No changes so far.

Packets

ID	Packet name	Documentation
Handshake serverbound
0x00	Handshake	Current	Pre
Login clientbound
0x01	Encryption Request	Current	Pre
0x05	Cookie Request (login)		Pre
Login serverbound
0x04	Cookie Response (login)		Pre
Configuration clientbound
0x00	Cookie Request (configuration)		Pre
~~0x00~~ 0x01	Clientbound Plugin Message (configuration)	Current	(unchanged)
~~0x01~~ 0x02	Disconnect (configuration)	Current	(unchanged)
~~0x02~~ 0x03	Finish Configuration	Current	(unchanged)
~~0x03~~ 0x04	Clientbound Keep Alive (configuration)	Current	(unchanged)
~~0x04~~ 0x05	Ping (configuration)	Current	(unchanged)
0x06	Reset Chat		Pre
~~0x05~~ 0x07	Registry Data	Current	Pre
~~0x06~~ 0x08	Remove Resource Pack (configuration)	Current	(unchanged)
~~0x07~~ 0x09	Add Resource Pack (configuration)	Current	(unchanged)
0x0A	Store Cookie (configuration)		Pre
0x0B	Transfer (configuration)		Pre
~~0x08~~ 0x0C	Feature Flags	Current	(unchanged)
~~0x09~~ 0x0D	Update Tags (configuration)	Current	(unchanged)
0x0E	Clientbound Known Packs		Pre
Configuration serverbound
0x01	Cookie Response (configuration)		Pre
~~0x01~~ 0x02	Serverbound Plugin Message (configuration)	Current	(unchanged)
~~0x02~~ 0x03	Finish Configuration	Current	(unchanged)
~~0x03~~ 0x04	Serverbound Keep Alive (configuration)	Current	(unchanged)
~~0x04~~ 0x05	Pong (configuration)	Current	(unchanged)
~~0x05~~ 0x06	Resource Pack Response (configuration)	Current	(unchanged)
0x07	Serverbound Known Packs		Pre
Play clientbound
0x16	Cookie Request (Play)		Pre
~~0x16~~ 0x17	Set Cooldown	Current	(unchanged)
~~0x17~~ 0x18	Chat Suggestions	Current	(unchanged)
~~0x18~~ 0x19	Clientbound Plugin Message (play)	Current	(unchanged)
~~0x19~~ 0x1A	Damage Event	Current	(unchanged)
0x1B	Debug Sample		Pre
~~0x1A~~ 0x1C	Delete Message	Current	(unchanged)
~~0x1B~~ 0x1D	Disconnect (play)	Current	(unchanged)
~~0x1C~~ 0x1E	Disguised Chat Message	Current	(unchanged)
~~0x1D~~ 0x1F	Entity Event	Current	(unchanged)
~~0x1E~~ 0x20	Explosion	Current	(unchanged)
~~0x1F~~ 0x21	Unload Chunk	Current	(unchanged)
~~0x20~~ 0x22	Game Event	Current	(unchanged)
~~0x21~~ 0x23	Open Horse Screen	Current	(unchanged)
~~0x22~~ 0x24	Hurt Animation	Current	(unchanged)
~~0x23~~ 0x25	Initialize World Border	Current	(unchanged)
~~0x24~~ 0x26	Clientbound Keep Alive (play)	Current	(unchanged)
~~0x25~~ 0x27	Chunk Data and Update Light	Current	(unchanged)
~~0x26~~ 0x28	World Event	Current	(unchanged)
~~0x27~~ 0x29	Particle	Current	(unchanged)
~~0x28~~ 0x2A	Update Light	Current	(unchanged)
~~0x29~~ 0x2B	Login (play)	Current	Pre
~~0x2A~~ 0x2C	Map Data	Current	(unchanged)
~~0x2B~~ 0x2D	Merchant Offers	Current	(unchanged)
~~0x2C~~ 0x2E	Update Entity Position	Current	(unchanged)
~~0x2D~~ 0x2F	Update Entity Position and Rotation	Current	(unchanged)
~~0x2E~~ 0x30	Update Entity Rotation	Current	(unchanged)
~~0x2F~~ 0x31	Move Vehicle	Current	(unchanged)
~~0x30~~ 0x32	Open Book	Current	(unchanged)
~~0x31~~ 0x33	Open Screen	Current	(unchanged)
~~0x32~~ 0x34	Open Sign Editor	Current	(unchanged)
~~0x33~~ 0x35	Ping (play)	Current	(unchanged)
~~0x34~~ 0x36	Ping Response (play)	Current	(unchanged)
~~0x35~~ 0x37	Place Ghost Recipe	Current	(unchanged)
~~0x36~~ 0x38	Player Abilities	Current	(unchanged)
~~0x37~~ 0x39	Player Chat Message	Current	(unchanged)
~~0x38~~ 0x3A	End Combat	Current	(unchanged)
~~0x39~~ 0x3B	Enter Combat	Current	(unchanged)
~~0x3A~~ 0x3C	Combat Death	Current	(unchanged)
~~0x3B~~ 0x3D	Player Info Remove	Current	(unchanged)
~~0x3C~~ 0x3E	Player Info Update	Current	(unchanged)
~~0x3D~~ 0x3F	Look At	Current	(unchanged)
~~0x3E~~ 0x40	Synchronize Player Position	Current	(unchanged)
~~0x3F~~ 0x41	Update Recipe Book	Current	(unchanged)
~~0x40~~ 0x42	Remove Entities	Current	(unchanged)
~~0x41~~ 0x43	Remove Entity Effect	Current	(unchanged)
~~0x42~~ 0x44	Reset Score	Current	(unchanged)
~~0x43~~ 0x45	Remove Resource Pack (play)	Current	(unchanged)
~~0x44~~ 0x46	Add Resource Pack (play)	Current	(unchanged)
~~0x45~~ 0x47	Respawn	Current	Pre
~~0x46~~ 0x48	Set Head Rotation	Current	(unchanged)
~~0x47~~ 0x49	Update Section Blocks	Current	(unchanged)
~~0x48~~ 0x4A	Select Advancements Tab	Current	(unchanged)
~~0x49~~ 0x4B	Server Data	Current	(unchanged)
~~0x4A~~ 0x4C	Set Action Bar Text	Current	(unchanged)
~~0x4B~~ 0x4D	Set Border Center	Current	(unchanged)
~~0x4C~~ 0x4E	Set Border Lerp Size	Current	(unchanged)
~~0x4D~~ 0x4F	Set Border Size	Current	(unchanged)
~~0x4E~~ 0x50	Set Border Warning Delay	Current	(unchanged)
~~0x4F~~ 0x51	Set Border Warning Distance	Current	(unchanged)
~~0x50~~ 0x52	Set Camera	Current	(unchanged)
~~0x51~~ 0x53	Set Held Item	Current	(unchanged)
~~0x52~~ 0x54	Set Center Chunk	Current	(unchanged)
~~0x53~~ 0x55	Set Render Distance	Current	(unchanged)
~~0x54~~ 0x56	Set Default Spawn Position	Current	(unchanged)
~~0x55~~ 0x57	Display Objective	Current	(unchanged)
~~0x56~~ 0x58	Set Entity Metadata	Current	(unchanged)
~~0x57~~ 0x59	Link Entities	Current	(unchanged)
~~0x58~~ 0x5A	Set Entity Velocity	Current	(unchanged)
~~0x59~~ 0x5B	Set Equipment	Current	(unchanged)
~~0x5A~~ 0x5C	Set Experience	Current	(unchanged)
~~0x5B~~ 0x5D	Set Health	Current	(unchanged)
~~0x5C~~ 0x5E	Update Objectives	Current	(unchanged)
~~0x5D~~ 0x5F	Set Passengers	Current	(unchanged)
~~0x5E~~ 0x60	Update Teams	Current	(unchanged)
~~0x5F~~ 0x61	Update Score	Current	(unchanged)
~~0x60~~ 0x62	Set Simulation Distance	Current	(unchanged)
~~0x61~~ 0x63	Set Subtitle Text	Current	(unchanged)
~~0x62~~ 0x64	Update Time	Current	(unchanged)
~~0x63~~ 0x65	Set Title Text	Current	(unchanged)
~~0x64~~ 0x66	Set Title Animation Times	Current	(unchanged)
~~0x65~~ 0x67	Entity Sound Effect	Current	(unchanged)
~~0x66~~ 0x68	Sound Effect	Current	(unchanged)
~~0x67~~ 0x69	Start Configuration	Current	(unchanged)
~~0x68~~ 0x6A	Stop Sound	Current	(unchanged)
0x6B	Store Cookie (Play)		Pre
~~0x69~~ 0x6C	System Chat Message	Current	(unchanged)
~~0x6A~~ 0x6D	Set Tab List Header And Footer	Current	(unchanged)
~~0x6B~~ 0x6E	Tag Query Response	Current	(unchanged)
~~0x6C~~ 0x6F	Pickup Item	Current	(unchanged)
~~0x6D~~ 0x70	Teleport Entity	Current	(unchanged)
~~0x6E~~ 0x71	Set Ticking State	Current	(unchanged)
~~0x6F~~ 0x72	Step Tick	Current	(unchanged)
0x73	Transfer (Play)		Pre
~~0x70~~ 0x74	Update Advancements	Current	(unchanged)
~~0x71~~ 0x75	Update Attributes	Current	Pre
~~0x72~~ 0x76	Entity Effect	Current	Pre
~~0x73~~ 0x77	Update Recipes	Current	(unchanged)
~~0x74~~ 0x78	Update Tags (play)	Current	(unchanged)
Play serverbound
0x04	Chat Command	Current	Pre
0x05	Signed Chat Command		Pre
~~0x05~~ 0x06	Chat Message	Current	(unchanged)
~~0x06~~ 0x07	Player Session	Current	(unchanged)
~~0x07~~ 0x08	Chunk Batch Received	Current	(unchanged)
~~0x08~~ 0x09	Client Status	Current	(unchanged)
~~0x09~~ 0x0A	Client Information (play)	Current	(unchanged)
~~0x0A~~ 0x0B	Command Suggestions Request	Current	(unchanged)
~~0x0B~~ 0x0C	Acknowledge Configuration	Current	(unchanged)
~~0x0C~~ 0x0D	Click Container Button	Current	(unchanged)
~~0x0D~~ 0x0E	Click Container	Current	(unchanged)
~~0x0E~~ 0x0F	Close Container	Current	(unchanged)
~~0x0F~~ 0x10	Change Container Slot State	Current	(unchanged)
0x11	Cookie Response (play)		Pre
~~0x10~~ 0x12	Serverbound Plugin Message (play)	Current	(unchanged)
0x13	Debug Sample Subscription		Pre
~~0x11~~ 0x14	Edit Book	Current	(unchanged)
~~0x12~~ 0x15	Query Entity Tag	Current	(unchanged)
~~0x13~~ 0x16	Interact	Current	(unchanged)
~~0x14~~ 0x17	Jigsaw Generate	Current	(unchanged)
~~0x15~~ 0x18	Serverbound Keep Alive (play)	Current	(unchanged)
~~0x16~~ 0x19	Lock Difficulty	Current	(unchanged)
~~0x17~~ 0x1A	Set Player Position	Current	(unchanged)
~~0x18~~ 0x1B	Set Player Position and Rotation	Current	(unchanged)
~~0x19~~ 0x1C	Set Player Rotation	Current	(unchanged)
~~0x1A~~ 0x1D	Set Player On Ground	Current	(unchanged)
~~0x1B~~ 0x1E	Move Vehicle	Current	(unchanged)
~~0x1C~~ 0x1F	Paddle Boat	Current	(unchanged)
~~0x1D~~ 0x20	Pick Item	Current	(unchanged)
~~0x1E~~ 0x21	Ping Request (play)	Current	(unchanged)
~~0x1F~~ 0x22	Place Recipe	Current	(unchanged)
~~0x20~~ 0x23	Player Abilities	Current	(unchanged)
~~0x21~~ 0x24	Player Action	Current	(unchanged)
~~0x22~~ 0x25	Player Command	Current	(unchanged)
~~0x23~~ 0x26	Player Input	Current	(unchanged)
~~0x24~~ 0x27	Pong (play)	Current	(unchanged)
~~0x25~~ 0x28	Change Recipe Book Settings	Current	(unchanged)
~~0x26~~ 0x29	Set Seen Recipe	Current	(unchanged)
~~0x27~~ 0x2A	Rename Item	Current	(unchanged)
~~0x28~~ 0x2B	Resource Pack Response (play)	Current	(unchanged)
~~0x29~~ 0x2C	Seen Advancements	Current	(unchanged)
~~0x2A~~ 0x2D	Select Trade	Current	(unchanged)
~~0x2B~~ 0x2E	Set Beacon Effect	Current	(unchanged)
~~0x2C~~ 0x2F	Set Held Item	Current	(unchanged)
~~0x2D~~ 0x30	Program Command Block	Current	(unchanged)
~~0x2E~~ 0x31	Program Command Block Minecart	Current	(unchanged)
~~0x2F~~ 0x32	Set Creative Mode Slot	Current	(unchanged)
~~0x30~~ 0x33	Program Jigsaw Block	Current	(unchanged)
~~0x31~~ 0x34	Program Structure Block	Current	(unchanged)
~~0x32~~ 0x35	Update Sign	Current	(unchanged)
~~0x33~~ 0x36	Swing Arm	Current	(unchanged)
~~0x34~~ 0x37	Teleport To Entity	Current	(unchanged)
~~0x35~~ 0x38	Use Item On	Current	(unchanged)
~~0x36~~ 0x39	Use Item	Current	(unchanged)

New/modified data types

No changes so far.

Entity Metadata

Type	Name	Value	Notes
0	Byte	Byte
1	VarInt	VarInt
2	VarLong	VarLong
3	Float	Float
4	String	String
5	Text Component	Text Component
6	Optional Text Component	(Boolean, Optional Text Component)	Text Component is present if the Boolean is set to true.
7	Slot	Slot
8	Boolean	Boolean
9	Rotations	(Float, Float, Float)	rotation on x, rotation on y, rotation on z
10	Position	Position
11	Optional Position	(Boolean, Optional Position)	Position is present if the Boolean is set to true.
12	Direction	VarInt Enum	Down = 0, Up = 1, North = 2, South = 3, West = 4, East = 5
13	Optional UUID	(Boolean, Optional UUID)	UUID is present if the Boolean is set to true.
14	Block State	VarInt	An ID in the block state registry.
15	Optional Block State	VarInt	0 for absent (air is unrepresentable); otherwise, an ID in the block state registry.
16	NBT	NBT
17	Particle	(VarInt, Varies)	particle type (an ID in the `minecraft:particle_type` registry), particle data (See Particles.)
18	Particles	(VarInt, Array of Particle)	length of array, particle data (See directly above.)
18 19	Villager Data	(VarInt, VarInt, VarInt)	villager type, villager profession, level (See below.)
19 20	Optional VarInt	VarInt	0 for absent; 1 + actual value otherwise. Used for entity IDs.
20 21	Pose	VarInt Enum	STANDING = 0, FALL_FLYING = 1, SLEEPING = 2, SWIMMING = 3, SPIN_ATTACK = 4, SNEAKING = 5, LONG_JUMPING = 6, DYING = 7, CROAKING = 8, USING_TONGUE = 9, SITTING = 10, ROARING = 11, SNIFFING = 12, EMERGING = 13, DIGGING = 14, SLIDING = 15, SHOOTING = 16, INHALING = 17
21 22	Cat Variant	VarInt	An ID in the `minecraft:cat_variant` registry.
22 23	Wolf Variant	VarInt	An ID in the `minecraft:wolf_variant` registry.
22 24	Frog Variant	VarInt	An ID in the `minecraft:frog_variant` registry.
23 25	Optional Global Position	(Boolean, Optional Identifier, Optional Position)	dimension identifier, position; only if the Boolean is set to true.
24 26	Painting Variant	VarInt	An ID in the `minecraft:painting_variant` registry.
25 27	Sniffer State	VarInt Enum	IDLING = 0, FEELING_HAPPY = 1, SCENTING = 2, SNIFFING = 3, SEARCHING = 4, DIGGING = 5, RISING = 6
26 28	Armadillo State	VarInt Enum	IDLE = 0, ROLLING = 1, SCARED = 2
26 29	Vector3	(Float, Float, Float)	x, y, z
27 30	Quaternion	(Float, Float, Float, Float)	x, y, z, w

Living Entity

TODO: This has changed to use the PARTICLES attribute

Wolf

Extends Tameable Animal.Inherited entity Tameable Animal does not existInherited entity Tameable Animal does not exist

Index	Type	Meaning	Default
0	Wolf Variant (22 23)	Wolf Variant	PALE
1	Boolean (8)	Is begging	false
2	VarInt (1)	Collar color (values are those used with dyes)	14 (Red)
3	VarInt (1)	Anger time	0

Armadillo

Extends Animal.

Index	Type	Meaning		Default
17	Armadillo State (26 28)	Armadillo State		IDLE

Block Actions

No changes so far.

Inventories

No changes so far.

Plugin Channels

No changes so far.

Handshake

Serverbound

Handshake

This causes the server to switch into the target state.

Packet ID	State	Bound To	Field Name	Field Type	Notes
0x00	Handshaking	Server	Protocol Version	VarInt	See protocol version numbers (currently 765 in Minecraft 1.20.4).
			Server Address	String (255)	Hostname or IP, e.g. localhost or 127.0.0.1, that was used to connect. The Notchian server does not use this information. Note that SRV records are a simple redirect, e.g. if _minecraft._tcp.example.com points to mc.example.org, users connecting to example.com will provide example.org as server address in addition to connecting to it.
			Server Port	Unsigned Short	Default is 25565. The Notchian server does not use this information.
			Next State	VarInt Enum	1 for Status, 2 for Login, 3 for Transfer.

Status

Clientbound

No changes so far.

Serverbound

No changes so far.

Login

Clientbound

Encryption Request

Packet ID	State	Bound To	Field Name	Field Type	Notes
0x01	Login	Client	Server ID	String (20)	Appears to be empty.
			Public Key Length	VarInt	Length of Public Key.
			Public Key	Byte Array	The server's public key, in bytes.
			Verify Token Length	VarInt	Length of Verify Token. Always 4 for Notchian servers.
			Verify Token	Byte Array	A sequence of random bytes generated by the server.
			Should Authenticate	Boolean

Cookie Request (login)

Requests a cookie that was previously stored.

Packet ID	State	Bound To	Field Name		Field Type		Notes
0x05	Login	Client	Key		Identifier		The identifier of the cookie.

Serverbound

Cookie Response (login)

Response to a Cookie Request (login) from the server. The Notchian server only accepts responses of up to 5 kiB in size.

Packet ID	State	Bound To	Field Name	Field Type	Notes
0x04	Login	Server	Key	Identifier	The identifier of the cookie.
			Has Payload	Boolean	The payload is only present if the cookie exists on the client.
			Payload Length	VarInt	Length of the following byte array.
			Payload	Optional Byte Array (5120)	The data of the cookie, if any.

Configuration

Clientbound

Cookie Request (configuration)

Requests a cookie that was previously stored.

Packet ID	State	Bound To	Field Name		Field Type		Notes
0x00	Configuration	Client	Key		Identifier		The identifier of the cookie.

Reset Chat

Packet ID	State	Bound To	Field Name	Field Type	Notes
0x06	Configuration	Client	no fields

Registry Data

Represents certain registries that are sent from the server and are applied on the client. The packet is sent for each of the following registries: minecraft:worldgen/biome, minecraft:chat_type, minecraft:trim_pattern, minecraft:trim_material, minecraft:wolf_variant, minecraft:dimension_type, minecraft:damage_type, and minecraft:banner_pattern.

Packet ID	State	Bound To	Field Name		Field Type		Notes
0x07	Configuration	Client	Registry Codec		NBT (Compound)		See Registry Data.
			Registry ID		Identifier
			Entry Count		VarInt		Number of entries in the following array.
			Entries	Entry ID	Array	Identifier
				Has Data		Boolean	Whether the entry has any data following.
				Data		NBT Tag	Entry data. Only present if Has Data is true.

Store Cookie (configuration)

Stores some arbitrary data on the client, which persists between server transfers. The Notchian client only accepts cookies of up to 5 kiB in size.

Packet ID	State	Bound To	Field Name		Field Type		Notes
0x0A	Configuration	Client	Key		Identifier		The identifier of the cookie.
0x0A	Configuration	Client	Payload		ByteArray(5120)		The data of the cookie.

Transfer (configuration)

Notifies the client that it should transfer to the given server. Cookies previously stored are preserved between server transfers.

Packet ID	State	Bound To	Field Name		Field Type		Notes
0x0B	Configuration	Client	Host		String		The hostname of IP of the server.
0x0B	Configuration	Client	Port		VarInt		The port of the server.

Clientbound Known Packs

Informs the client of which data packs are present on the server. The client is expected to respond with its own Serverbown Known Packs packet. The Notchian server does not continue with Configuration until it receives a response.

Packet ID	State	Bound To	Field Name		Field Type		Notes
0x0E	Configuration	Client	Known Pack Count		VarInt		The number of known packs in the following array.
			Known Packs	Namespace	Array	String
				ID		String
				Version		String

Serverbound

Cookie Response (configuration)

Response to a Cookie Request (configuration) from the server. The Notchian server only accepts responses of up to 5 kiB in size.

Packet ID	State	Bound To	Field Name	Field Type	Notes
0x01	Configuration	Server	Key	Identifier	The identifier of the cookie.
			Has Payload	Boolean	The payload is only present if the cookie exists on the client.
			Payload Length	VarInt	Length of the following byte array.
			Payload	Optional Byte Array (5120)	The data of the cookie, if any.

Serverbound Known Packs

ID 0x07, same structure as Clientbound Known Packs. If the client specifies a pack in this packet, the server should omit its contained data from Registry Data.

Play

Clientbound

Cookie Request (play)

Requests a cookie that was previously stored.

Packet ID	State	Bound To	Field Name		Field Type		Notes
0x16	Play	Client	Key		Identifier		The identifier of the cookie.

Debug Sample

Packet ID	State	Bound To	Field Name	Field Type	Notes
0x1B	Play	Client	Sample Length	VarInt	The length of the following array.
			Sample	Long Array	TODO: What is the structure of the data in this array?
			Sample Type	VarInt Enum	The type of sample data. Currently always 0 (TICK_TIME).

Login (play)

Packet ID	State	Bound To	Field Name	Field Type	Notes
0x2B	Play	Client	Entity ID	Int	The player's Entity ID (EID).
			Is hardcore	Boolean
			Dimension Count	VarInt	Size of the following array.
			Dimension Names	Array of Identifier	Identifiers for all dimensions on the server.
			Max Players	VarInt	Was once used by the client to draw the player list, but now is ignored.
			View Distance	VarInt	Render distance (2-32).
			Simulation Distance	VarInt	The distance that the client will process specific things, such as entities.
			Reduced Debug Info	Boolean	If true, a Notchian client shows reduced information on the debug screen. For servers in development, this should almost always be false.
			Enable respawn screen	Boolean	Set to false when the doImmediateRespawn gamerule is true.
			Do limited crafting	Boolean	Whether players can only craft recipes they have already unlocked. Currently unused by the client.
			Dimension Type	~~Identifier~~ VarInt	The ID of the type of dimension in the `minecraft:dimension_type` registry, defined by the Registry Data packet.
			Dimension Name	Identifier	Name of the dimension being spawned into.
			Hashed seed	Long	First 8 bytes of the SHA-256 hash of the world's seed. Used client side for biome noise
			Game mode	Unsigned Byte	0: Survival, 1: Creative, 2: Adventure, 3: Spectator.
			Previous Game mode	Byte	-1: Undefined (null), 0: Survival, 1: Creative, 2: Adventure, 3: Spectator. The previous game mode. Vanilla client uses this for the debug (F3 + N & F3 + F4) game mode switch. (More information needed)
			Is Debug	Boolean	True if the world is a debug mode world; debug mode worlds cannot be modified and have predefined blocks.
			Is Flat	Boolean	True if the world is a superflat world; flat worlds have different void fog and a horizon at y=0 instead of y=63.
			Has death location	Boolean	If true, then the next two fields are present.
			Death dimension name	Optional Identifier	Name of the dimension the player died in.
			Death location	Optional Position	The location that the player died at.
			Portal cooldown	VarInt	The number of ticks until the player can use the portal again.
			Enforces Secure Chat	Boolean

Respawn

Packet ID	State	Bound To	Field Name	Field Type	Notes
0x47	Play	Client	Dimension Type	~~Identifier~~ VarInt	The ID of the type of dimension in the `minecraft:dimension_type` registry, defined by the Registry Data packet.
			Dimension Name	Identifier	Name of the dimension being spawned into.
			Hashed seed	Long	First 8 bytes of the SHA-256 hash of the world's seed. Used client side for biome noise
			Game mode	Unsigned Byte	0: Survival, 1: Creative, 2: Adventure, 3: Spectator.
			Previous Game mode	Byte	-1: Undefined (null), 0: Survival, 1: Creative, 2: Adventure, 3: Spectator. The previous game mode. Vanilla client uses this for the debug (F3 + N & F3 + F4) game mode switch. (More information needed)
			Is Debug	Boolean	True if the world is a debug mode world; debug mode worlds cannot be modified and have predefined blocks.
			Is Flat	Boolean	True if the world is a superflat world; flat worlds have different void fog and a horizon at y=0 instead of y=63.
			Has death location	Boolean	If true, then the next two fields are present.
			Death dimension Name	Optional Identifier	Name of the dimension the player died in.
			Death location	Optional Position	The location that the player died at.
			Portal cooldown	VarInt	The number of ticks until the player can use the portal again.
			Data kept	Byte	Bit mask. 0x01: Keep attributes, 0x02: Keep metadata. Tells which data should be kept on the client side once the player has respawned. In the Notchian implementation, this is context dependent: normal respawns (after death) keep no data; exiting the end poem/credits keeps the attributes; other dimension changes (portals or teleports) keep all data.

Store Cookie (play)

Stores some arbitrary data on the client, which persists between server transfers. The Notchian client only accepts cookies of up to 5 kiB in size.

Packet ID	State	Bound To	Field Name	Field Type	Notes
0x6B	Play	Client	Key	Identifier	The identifier of the cookie.
			Payload Length	VarInt	Length of the following byte array.
			Payload	Byte Array (5120)	The data of the cookie.

Transfer (play)

Notifies the client that it should transfer to the given server. Cookies previously stored are preserved between server transfers.

Packet ID	State	Bound To	Field Name		Field Type		Notes
0x73	Play	Client	Host		String		The hostname of IP of the server.
0x73	Play	Client	Port		VarInt		The port of the server.

Update Attributes

Sets attributes on the given entity.

Packet ID	State	Bound To	Field Name		Field Type		Notes
0x71	Play	Client	Entity ID		VarInt
			Number Of Properties		VarInt		Number of elements in the following array.
			Property	~~Key~~ Id	Array	~~Identifier~~ VarInt Enum	See below.
				Value		Double	See below.
				Number Of Modifiers		VarInt	Number of elements in the following array.
				Modifiers		Array of Modifier Data	See Attribute#Modifiers. Modifier Data defined below.

Known Key values (see also Attribute#Modifiers):

These changed between 24w03b and 24w13a, TODO: Update this

Id	Key	Default	Min	Max	Label
0	generic.armor	0.0	0.0	30.0	Armor.
1	generic.armor_toughness	0.0	0.0	20.0	Armor Toughness.
2	generic.attack_damage	2.0	0.0	2048.0	Attack Damage.
3	generic.attack_knockback	0.0	0.0	5.0	Attack Knockback.
4	generic.attack_speed	4.0	0.0	1024.0	Attack Speed.
5	generic.block_interaction_range	4.5	0.0	64.0	Block Interaction Range.
6	generic.entity_interaction_range	3.0	0.0	64.0	Entity Interaction Range.
7	generic.flying_speed	0.4	0.0	1024.0	Flying Speed.
8	generic.follow_range	32.0	0.0	2048.0	Follow Range.
9	horse.jump_strength	0.7	0.0	2.0	Jump Strength.
10	generic.knockback_resistance	0.0	0.0	1.0	Knockback Resistance.
11	generic.luck	0.0	-1024.0	1024.0	Luck.
12	generic.max_absorption	0.0	0.0	2048.0	Max Absorption.
13	generic.max_health	20.0	1.0	1024.0	Max Health.
14	generic.movement_speed	0.7	0.0	1024.0	Movement Speed.
15	generic.scale	1.0	0.0625	16.0	Scale.
16	zombie.spawn_reinforcements	0.0	0.0	1.0	Spawn Reinforcements Chance.
17	generic.step_height	0.6	0.0	10.0	Step Height.

Modifier Data structure:

Field Name	Field Type	Notes
UUID	UUID
Amount	Double	May be positive or negative.
Operation	Byte	See below.

The operation controls how the base value of the modifier is changed.

0: Add/subtract amount
1: Add/subtract amount percent of the current value
2: Multiply by amount percent

All of the 0's are applied first, and then the 1's, and then the 2's.

Entity Effect

Packet ID	State	Bound To	Field Name	Field Type	Notes
0x72	Play	Client	Entity ID	VarInt
			Effect ID	VarInt	See this table.
			Amplifier	Byte	Notchian client displays effect level as Amplifier + 1.
			Duration	VarInt	Duration in ticks. (-1 for infinite)
			Flags	Byte	Bit field, see below.
			Has Factor Data	Boolean	Used in DARKNESS effect
			Factor Codec	NBT Tag	See below

	The following information needs to be added to this page:
	What exact effect does the blend bit flag have on the client? What happens if it is used on effects besides DARKNESS?

Within flags:

0x01: Is ambient - was the effect spawned from a beacon? All beacon-generated effects are ambient. Ambient effects use a different icon in the HUD (blue border rather than gray). If all effects on an entity are ambient, the "Is potion effect ambient" living metadata field should be set to true. Usually should not be enabled.
0x02: Show particles - should all particles from this effect be hidden? Effects with particles hidden are not included in the calculation of the effect color, and are not rendered on the HUD (but are still rendered within the inventory). Usually should be enabled.
0x04: Show icon - should the icon be displayed on the client? Usually should be enabled.
0x08: Blend - should the effect's hard-coded blending be applied? Currently only used in the DARKNESS effect to apply extra void fog and adjust the gamma value for lighting.

~~Factor Data~~

Name	Type	Notes
padding_duration	TAG_INT
factor_start	TAG_FLOAT
factor_target	TAG_FLOAT
factor_current	TAG_FLOAT
effect_changed_timestamp	TAG_INT
factor_previous_frame	TAG_FLOAT
had_effect_last_tick	TAG_BOOLEAN

Serverbound

Chat Command

Packet ID	State	Bound To	Field Name		Field Type		Notes
0x04	Play	Server	Command		String (256)		The command typed by the client.
			Timestamp		Long		The timestamp that the command was executed.
			Salt		Long		The salt for the following argument signatures.
			Array length		VarInt		Number of entries in the following array. The maximum length in Notchian server is 8.
			Array of argument signatures	Argument name	Array (8)	String (16)	The name of the argument that is signed by the following signature.
			Array of argument signatures	Signature	Array (8)	Byte Array (256)	The signature that verifies the argument. Always 256 bytes and is not length-prefixed.
			Message Count		VarInt
			Acknowledged		Fixed BitSet (20)

Signed Chat Command

Packet ID	State	Bound To	Field Name		Field Type		Notes
0x05	Play	Server	Command		String(256)		The command typed by the client.
			Timestamp		Long		The timestamp that the command was executed. Milliseconds since the Unix epoch.
			Salt		Long		The salt for the following argument signatures.
			Argument Signature Count		VarInt		Number of elements in the following array. The maximum length in Notchian server is 8.
			Argument Signatures	Name	Array	String(16)	The name of the argument that is signed by the following signature.
			Argument Signatures	Signature	Array	ByteArray(256)	The signature that verifies the argument. Always 256 bytes and is not length-prefixed.
			Seen Messages Offset		VarInt
			Seen Messages Acknowledged		Fixed BitSet(20)

Cookie Response (play)

Response to a Cookie Request (play) from the server. The Notchian server only accepts responses of up to 5 kiB in size.

Packet ID	State	Bound To	Field Name	Field Type	Notes
0x11	Play	Server	Key	Identifier	The identifier of the cookie.
			Has Payload	Boolean	The payload is only present if the cookie exists on the client.
			Payload Length	Optional VarInt	Length of the following byte array.
			Payload	Optional Byte Array (5120)	The data of the cookie, if any.

Debug Sample Subscription

Packet ID	State	Bound To	Field Name	Field Type	Notes
0x13	Play	Server	Sample Type	VarInt Enum	The type of debug sample to subscribe to. Currently always 0 (TICK_TIME).

@@ Line 1: / Line 1: @@
-This page documents the changes from the [[Protocol|last stable Minecraft release]] (currently [[Protocol version numbers|1.12.2, protocol 340]]) to the current pre-release (currently [[Protocol version numbers|1.13, protocol 393]]). Note that this page contains bleeding-edge information that may not be completely or correctly documented.
+This page documents the changes from the [[Protocol|last stable Minecraft release]] (currently [[Protocol version numbers|1.20.4, protocol 765]]) to the current pre-release (currently [[Protocol version numbers|24w13a, protocol {{Snapshot PVN|1073742006}}]]). Note that this page contains bleeding-edge information that may not be completely or correctly documented.
 One who wishes to commandeer the merging of this into [[Protocol]] when an update is made must be sure to respect any changes that may have occurred to the respective packets there.
@@ Line 9: / Line 9: @@
 === Data types ===
-==== Other definitions ====
+No changes so far.
-===== Global palette =====
-A table/dictionary/palette mapping nonnegative integers to block states. {{change|The block state IDs can be constructed from this table by multiplying what the Minecraft Wiki calls “block IDs” by 16 and adding the metadata/damage value (or in most programming languages block_id << 4 {{!}} metadata).|Block state IDs are created in a linear fashion based off of order of assignment.  One block state ID allocated for each unique block state for a block; if a block has multiple properties then the number of allocated states is the product of the number of values for each property.  A current list of properties and state ID ranges is found on [http://pokechu22.github.io/Burger/1.13.html burger].}}
-{{Change||Alternatively, the vanilla server now includes an option to export the current block state ID mapping, by running <code>java -cp minecraft_server.jar net.minecraft.data.Main --reports</code>.  See [[Data Generators]] for more information.}}
 === Packets ===
@@ Line 23: / Line 18: @@
   !colspan="2"| Documentation
   |-
-!colspan="4"| Handshaking serverbound
+ !colspan="4"| Handshake serverbound
-{{PacketList|0x00|Handshake}}
+ {{PacketList|0x00|Handshake}}
   |-
-!colspan="4"| Play clientbound
+ !colspan="4"| Login clientbound
-{{PacketList|0x04|Spawn Painting}}
+  {{PacketList|0x01|Encryption Request}}
-{{PacketList|0x07|Statistics}}
+ {{PacketList|0x05|Cookie Request (login)|rel=added}}
-{{PacketList|0x09|Update Block Entity}}
-{{PacketList|0x0B|Block Change}}
-{{PacketList|{{change|0x0F|0x0E}}|Chat Message (clientbound)|pre=unchanged}}
-{{PacketList|{{change|0x10|0x0F}}|Multi Block Change}}
-{{PacketList|{{change|0x0E|0x10}}|Tab-Complete (clientbound)}}
-{{PacketList|0x11|Declare Commands|rel=added}}
-{{PacketList|{{change|0x11|0x12}}|Confirm Transaction (clientbound)|pre=unchanged}}
-{{PacketList|{{change|0x12|0x13}}|Close Window (clientbound)|pre=unchanged}}
-{{PacketList|{{change|0x13|0x14}}|Open Window|pre=unchanged}}
-{{PacketList|{{change|0x14|0x15}}|Window Items|pre=unchanged}}
-{{PacketList|{{change|0x15|0x16}}|Window Property|pre=unchanged}}
-{{PacketList|{{change|0x16|0x17}}|Set Slot|pre=unchanged}}
-{{PacketList|{{change|0x17|0x18}}|Set Cooldown|pre=unchanged}}
-{{PacketList|{{change|0x18|0x19}}|Plugin Message (clientbound)}}
-{{PacketList|{{change|0x19|0x1A}}|Named Sound Effect}}
-{{PacketList|{{change|0x1A|0x1B}}|Disconnect (play)|pre=unchanged}}
-{{PacketList|{{change|0x1B|0x1C}}|Entity Status|pre=unchanged}}
-{{PacketList|0x1D|NBT Query Response|rel=added}}
-{{PacketList|{{change|0x1C|0x1E}}|Explosion|pre=unchanged}}
-{{PacketList|{{change|0x1D|0x1F}}|Unload Chunk|pre=unchanged}}
-{{PacketList|{{change|0x1E|0x20}}|Change Game State|pre=unchanged}}
-{{PacketList|{{change|0x1F|0x21}}|Keep Alive (clientbound)|pre=unchanged}}
-{{PacketList|{{change|0x20|0x22}}|Chunk Data}}
-{{PacketList|{{change|0x21|0x23}}|Effect|pre=unchanged}}
-{{PacketList|{{change|0x22|0x24}}|Spawn Particle}}
-{{PacketList|{{change|0x23|0x25}}|Join Game|pre=unchanged}}
-{{PacketList|{{change|0x24|0x26}}|Map}}
-{{PacketList|{{change|0x25|0x27}}|Entity|pre=unchanged}}
-{{PacketList|{{change|0x26|0x28}}|Entity Relative Move|pre=unchanged}}
-{{PacketList|{{change|0x27|0x29}}|Entity Look And Relative Move|pre=unchanged}}
-{{PacketList|{{change|0x28|0x2A}}|Entity Look|pre=unchanged}}
-{{PacketList|{{change|0x29|0x2B}}|Vehicle Move (clientbound)|pre=unchanged}}
-{{PacketList|{{change|0x2A|0x2C}}|Open Sign Editor|pre=unchanged}}
-{{PacketList|{{change|0x2B|0x2D}}|Craft Recipe Response}}
-{{PacketList|{{change|0x2C|0x2E}}|Player Abilities (clientbound)|pre=unchanged}}
-{{PacketList|{{change|0x2D|0x2F}}|Combat Event|pre=unchanged}}
-{{PacketList|{{change|0x2E|0x30}}|Player List Item|pre=unchanged}}
-{{PacketList|0x31|Face Player|rel=added}}
-{{PacketList|{{change|0x2F|0x32}}|Player Position And Look (clientbound)|pre=unchanged}}
-{{PacketList|{{change|0x30|0x33}}|Use Bed|pre=unchanged}}
-{{PacketList|{{change|0x31|0x34}}|Unlock Recipes}}
-{{PacketList|{{change|0x32|0x35}}|Destroy Entities|pre=unchanged}}
-{{PacketList|{{change|0x33|0x36}}|Remove Entity Effect|pre=unchanged}}
-{{PacketList|{{change|0x34|0x37}}|Resource Pack Send|pre=unchanged}}
-{{PacketList|{{change|0x35|0x38}}|Respawn|pre=unchanged}}
-{{PacketList|{{change|0x36|0x39}}|Entity Head Look|pre=unchanged}}
-{{PacketList|{{change|0x37|0x3A}}|Select Advancement Tab|pre=unchanged}}
-{{PacketList|{{change|0x38|0x3B}}|World Border|pre=unchanged}}
-{{PacketList|{{change|0x39|0x3C}}|Camera|pre=unchanged}}
-{{PacketList|{{change|0x3A|0x3D}}|Held Item Change (clientbound)|pre=unchanged}}
-{{PacketList|{{change|0x3B|0x3E}}|Display Scoreboard|pre=unchanged}}
-{{PacketList|{{change|0x3C|0x3F}}|Entity Metadata|pre=unchanged}}
-{{PacketList|{{change|0x3D|0x40}}|Attach Entity|pre=unchanged}}
-{{PacketList|{{change|0x3E|0x41}}|Entity Velocity|pre=unchanged}}
-{{PacketList|{{change|0x3F|0x42}}|Entity Equipment|pre=unchanged}}
-{{PacketList|{{change|0x40|0x43}}|Set Experience|pre=unchanged}}
-{{PacketList|{{change|0x41|0x44}}|Update Health|pre=unchanged}}
-{{PacketList|{{change|0x42|0x45}}|Scoreboard Objective}}
-{{PacketList|{{change|0x43|0x46}}|Set Passengers|pre=unchanged}}
-{{PacketList|{{change|0x44|0x47}}|Teams}}
-{{PacketList|{{change|0x45|0x48}}|Update Score|pre=unchanged}}
-{{PacketList|{{change|0x46|0x49}}|Spawn Position|pre=unchanged}}
-{{PacketList|{{change|0x47|0x4A}}|Time Update|pre=unchanged}}
-{{PacketList|{{change|0x48|0x4B}}|Title|pre=unchanged}}
-{{PacketList|0x4C|Stop Sound|rel=added}}
-{{PacketList|{{change|0x49|0x4D}}|Sound Effect|pre=unchanged}}
-{{PacketList|{{change|0x4A|0x4E}}|Player List Header And Footer|pre=unchanged}}
-{{PacketList|{{change|0x4B|0x4F}}|Collect Item|pre=unchanged}}
-{{PacketList|{{change|0x4C|0x50}}|Entity Teleport|pre=unchanged}}
-{{PacketList|{{change|0x4D|0x51}}|Advancements|pre=unchanged}}
-{{PacketList|{{change|0x4E|0x52}}|Entity Properties|pre=unchanged}}
-{{PacketList|{{change|0x4F|0x53}}|Entity Effect|pre=unchanged}}
-{{PacketList|0x54|Declare Recipes|rel=added}}
-{{PacketList|0x55|Tags|rel=added}}
-  |-
-!colspan="4"| Play serverbound
-{{PacketList|0x01|Query Block NBT|rel=added}}
-{{PacketList|{{change|0x01|0x05}}|Tab-Complete (serverbound)}}
-{{PacketList|{{change|0x05|0x06}}|Confirm Transaction (serverbound)|pre=unchanged}}
-{{PacketList|{{change|0x06|0x07}}|Enchant Item|pre=unchanged}}
-{{PacketList|{{change|0x07|0x08}}|Click Window|pre=unchanged}}
-{{PacketList|{{change|0x08|0x09}}|Close Window (serverbound)|pre=unchanged}}
-{{PacketList|{{change|0x09|0x0A}}|Plugin message (serverbound)}}
-{{PacketList|0x0B|Edit Book|rel=added}}
-{{PacketList|0x0C|Query Entity NBT|rel=added}}
-{{PacketList|{{change|0x0A|0x0D}}|Use Entity|pre=unchanged}}
-{{PacketList|{{change|0x0B|0x0E}}|Keep Alive (serverbound)|pre=unchanged}}
-{{PacketList|{{change|0x0C|0x0F}}|Player|pre=unchanged}}
-{{PacketList|{{change|0x0D|0x10}}|Player Position|pre=unchanged}}
-{{PacketList|{{change|0x0E|0x11}}|Player Position And Look (serverbound)|pre=unchanged}}
-{{PacketList|{{change|0x0F|0x12}}|Player Look|pre=unchanged}}
-{{PacketList|{{change|0x10|0x13}}|Vehicle Move (serverbound)|pre=unchanged}}
-{{PacketList|{{change|0x11|0x14}}|Steer Boat|pre=unchanged}}
-{{PacketList|0x15|Pick Item|rel=added}}
-{{PacketList|{{change|0x12|0x16}}|Craft Recipe Request}}
-{{PacketList|{{change|0x13|0x17}}|Player Abilities (serverbound)|pre=unchanged}}
-{{PacketList|{{change|0x14|0x18}}|Player Digging|pre=unchanged}}
-{{PacketList|{{change|0x15|0x19}}|Entity Action|pre=unchanged}}
-{{PacketList|{{change|0x16|0x1A}}|Steer Vehicle|pre=unchanged}}
-{{PacketList|{{change|0x17|0x1B}}|Recipe Book Data}}
-{{PacketList|0x1C|Name Item|rel=added}}
-{{PacketList|{{change|0x18|0x1D}}|Resource Pack Status|pre=unchanged}}
-{{PacketList|{{change|0x19|0x1E}}|Advancement Tab|pre=unchanged}}
-{{PacketList|0x1F|Select Trade|rel=added}}
-{{PacketList|0x20|Set Beacon Effect|rel=added}}
-{{PacketList|{{change|0x1A|0x21}}|Held Item Change (serverbound)|pre=unchanged}}
-{{PacketList|0x22|Update Command Block|rel=added}}
-{{PacketList|0x23|Update Command Block Minecart|rel=added}}
-{{PacketList|{{change|0x1B|0x24}}|Creative Inventory Action|pre=unchanged}}
-{{PacketList|0x25|Update Structure Block|rel=added}}
-{{PacketList|{{change|0x1C|0x26}}|Update Sign|pre=unchanged}}
-{{PacketList|{{change|0x1D|0x27}}|Animation (serverbound)|pre=unchanged}}
-{{PacketList|{{change|0x1E|0x28}}|Spectate|pre=unchanged}}
-{{PacketList|{{change|0x1F|0x29}}|Player Block Placement|pre=unchanged}}
-{{PacketList|{{change|0x20|0x2A}}|Use Item|pre=unchanged}}
-|-
-!colspan="5"| Login clientbound
-{{PacketList|0x04|Login Plugin Request|rel=added}}
-|-
-!colspan="3"| Login serverbound
-{{PacketList|0x02|Login Plugin Response|rel=added}}
- |}
-== New/modified data types ==
-=== [[Slot]] ===
-{| class="wikitable"
- ! Name
- ! Type
- ! Meaning
   |-
-  | {{Change|Block ID|Item ID}}
+  !colspan="4"| Login serverbound
- | Short
+  {{PacketList|0x04|Cookie Response (login)|rel=added}}
-  | The {{Minecraft Wiki|Data values#Block IDs|item{{change|/block}} ID}}. A value of <code>-1</code> signifies that the slot is empty, and no further data follows. {{Change||Item IDs are now uniquely defined and are completely independent of block IDs.}}
   |-
-  | Item Count
+  !colspan="4"| Configuration clientbound
-  | Optional Byte
+  {{PacketList|0x00|Cookie Request (configuration)|rel=added}}
-  | Not present if Block ID is <code>-1</code>.
+ {{PacketList|{{change|0x00|0x01}}|Clientbound Plugin Message (configuration)|pre=unchanged}}
-  |- {{Removed}}
+ {{PacketList|{{change|0x01|0x02}}|Disconnect (configuration)|pre=unchanged}}
-  | Item Damage
+ {{PacketList|{{change|0x02|0x03}}|Finish Configuration|pre=unchanged}}
-  | Optional Short
+ {{PacketList|{{change|0x03|0x04}}|Clientbound Keep Alive (configuration)|pre=unchanged}}
-  | Not present if Block ID is <code>-1</code>.
+ {{PacketList|{{change|0x04|0x05}}|Ping (configuration)|pre=unchanged}}
+ {{PacketList|0x06|Reset Chat|rel=added}}
+ {{PacketList|{{change|0x05|0x07}}|Registry Data}}
+  {{PacketList|{{change|0x06|0x08}}|Remove Resource Pack (configuration)|pre=unchanged}}
+ {{PacketList|{{change|0x07|0x09}}|Add Resource Pack (configuration)|pre=unchanged}}
+  {{PacketList|0x0A|Store Cookie (configuration)|rel=added}}
+ {{PacketList|0x0B|Transfer (configuration)|rel=added}}
+  {{PacketList|{{change|0x08|0x0C}}|Feature Flags|pre=unchanged}}
+  {{PacketList|{{change|0x09|0x0D}}|Update Tags (configuration)|pre=unchanged}}
+  {{PacketList|0x0E|Clientbound Known Packs|rel=added}}
   |-
-  | NBT
+  !colspan="4"| Configuration serverbound
-  | Optional NBT
+  {{PacketList|0x01|Cookie Response (configuration)|rel=added}}
-  | Not present if Block ID is <code>-1</code>. If 0, there is no NBT data, and no further data follows. Otherwise the byte is the start of an NBT blob as shown below:
+  {{PacketList|{{change|0x01|0x02}}|Serverbound Plugin Message (configuration)|pre=unchanged}}
-  |}
+  {{PacketList|{{change|0x02|0x03}}|Finish Configuration|pre=unchanged}}
+ {{PacketList|{{change|0x03|0x04}}|Serverbound Keep Alive (configuration)|pre=unchanged}}
-=== Particle ===
+  {{PacketList|{{change|0x04|0x05}}|Pong (configuration)|pre=unchanged}}
+  {{PacketList|{{change|0x05|0x06}}|Resource Pack Response (configuration)|pre=unchanged}}
-{| class="wikitable"
+  {{PacketList|0x07|Serverbound Known Packs|rel=added}}
-  ! Field Name
-  ! Field Type
-  ! Meaning
   |-
-  | ID
+  !colspan="4"| Play clientbound
-  | VarInt
+  {{PacketList|0x16|Cookie Request (Play)|rel=added}}
-  | The ID of the particle type, see below.
+ {{PacketList|{{change|0x16|0x17}}|Set Cooldown|pre=unchanged}}
+ {{PacketList|{{change|0x17|0x18}}|Chat Suggestions|pre=unchanged}}
+ {{PacketList|{{change|0x18|0x19}}|Clientbound Plugin Message (play)|pre=unchanged}}
+ {{PacketList|{{change|0x19|0x1A}}|Damage Event|pre=unchanged}}
+ {{PacketList|0x1B|Debug Sample|rel=added}}
+ {{PacketList|{{change|0x1A|0x1C}}|Delete Message|pre=unchanged}}
+ {{PacketList|{{change|0x1B|0x1D}}|Disconnect (play)|pre=unchanged}}
+ {{PacketList|{{change|0x1C|0x1E}}|Disguised Chat Message|pre=unchanged}}
+ {{PacketList|{{change|0x1D|0x1F}}|Entity Event|pre=unchanged}}
+ {{PacketList|{{change|0x1E|0x20}}|Explosion|pre=unchanged}}
+ {{PacketList|{{change|0x1F|0x21}}|Unload Chunk|pre=unchanged}}
+ {{PacketList|{{change|0x20|0x22}}|Game Event|pre=unchanged}}
+ {{PacketList|{{change|0x21|0x23}}|Open Horse Screen|pre=unchanged}}
+ {{PacketList|{{change|0x22|0x24}}|Hurt Animation|pre=unchanged}}
+ {{PacketList|{{change|0x23|0x25}}|Initialize World Border|pre=unchanged}}
+ {{PacketList|{{change|0x24|0x26}}|Clientbound Keep Alive (play)|pre=unchanged}}
+ {{PacketList|{{change|0x25|0x27}}|Chunk Data and Update Light|pre=unchanged}}
+ {{PacketList|{{change|0x26|0x28}}|World Event|pre=unchanged}}
+ {{PacketList|{{change|0x27|0x29}}|Particle|pre=unchanged}}
+ {{PacketList|{{change|0x28|0x2A}}|Update Light|pre=unchanged}}
+ {{PacketList|{{change|0x29|0x2B}}|Login (play)}}
+ {{PacketList|{{change|0x2A|0x2C}}|Map Data|pre=unchanged}}
+ {{PacketList|{{change|0x2B|0x2D}}|Merchant Offers|pre=unchanged}}
+ {{PacketList|{{change|0x2C|0x2E}}|Update Entity Position|pre=unchanged}}
+ {{PacketList|{{change|0x2D|0x2F}}|Update Entity Position and Rotation|pre=unchanged}}
+ {{PacketList|{{change|0x2E|0x30}}|Update Entity Rotation|pre=unchanged}}
+  {{PacketList|{{change|0x2F|0x31}}|Move Vehicle|pre=unchanged}}
+ {{PacketList|{{change|0x30|0x32}}|Open Book|pre=unchanged}}
+ {{PacketList|{{change|0x31|0x33}}|Open Screen|pre=unchanged}}
+ {{PacketList|{{change|0x32|0x34}}|Open Sign Editor|pre=unchanged}}
+ {{PacketList|{{change|0x33|0x35}}|Ping (play)|pre=unchanged}}
+ {{PacketList|{{change|0x34|0x36}}|Ping Response (play)|pre=unchanged}}
+ {{PacketList|{{change|0x35|0x37}}|Place Ghost Recipe|pre=unchanged}}
+ {{PacketList|{{change|0x36|0x38}}|Player Abilities|pre=unchanged}}
+ {{PacketList|{{change|0x37|0x39}}|Player Chat Message|pre=unchanged}}
+ {{PacketList|{{change|0x38|0x3A}}|End Combat|pre=unchanged}}
+ {{PacketList|{{change|0x39|0x3B}}|Enter Combat|pre=unchanged}}
+ {{PacketList|{{change|0x3A|0x3C}}|Combat Death|pre=unchanged}}
+ {{PacketList|{{change|0x3B|0x3D}}|Player Info Remove|pre=unchanged}}
+ {{PacketList|{{change|0x3C|0x3E}}|Player Info Update|pre=unchanged}}
+ {{PacketList|{{change|0x3D|0x3F}}|Look At|pre=unchanged}}
+ {{PacketList|{{change|0x3E|0x40}}|Synchronize Player Position|pre=unchanged}}
+ {{PacketList|{{change|0x3F|0x41}}|Update Recipe Book|pre=unchanged}}
+ {{PacketList|{{change|0x40|0x42}}|Remove Entities|pre=unchanged}}
+ {{PacketList|{{change|0x41|0x43}}|Remove Entity Effect|pre=unchanged}}
+ {{PacketList|{{change|0x42|0x44}}|Reset Score|pre=unchanged}}
+ {{PacketList|{{change|0x43|0x45}}|Remove Resource Pack (play)|pre=unchanged}}
+ {{PacketList|{{change|0x44|0x46}}|Add Resource Pack (play)|pre=unchanged}}
+ {{PacketList|{{change|0x45|0x47}}|Respawn}}
+ {{PacketList|{{change|0x46|0x48}}|Set Head Rotation|pre=unchanged}}
+ {{PacketList|{{change|0x47|0x49}}|Update Section Blocks|pre=unchanged}}
+ {{PacketList|{{change|0x48|0x4A}}|Select Advancements Tab|pre=unchanged}}
+ {{PacketList|{{change|0x49|0x4B}}|Server Data|pre=unchanged}}
+ {{PacketList|{{change|0x4A|0x4C}}|Set Action Bar Text|pre=unchanged}}
+ {{PacketList|{{change|0x4B|0x4D}}|Set Border Center|pre=unchanged}}
+ {{PacketList|{{change|0x4C|0x4E}}|Set Border Lerp Size|pre=unchanged}}
+ {{PacketList|{{change|0x4D|0x4F}}|Set Border Size|pre=unchanged}}
+ {{PacketList|{{change|0x4E|0x50}}|Set Border Warning Delay|pre=unchanged}}
+ {{PacketList|{{change|0x4F|0x51}}|Set Border Warning Distance|pre=unchanged}}
+ {{PacketList|{{change|0x50|0x52}}|Set Camera|pre=unchanged}}
+ {{PacketList|{{change|0x51|0x53}}|Set Held Item|pre=unchanged}}
+ {{PacketList|{{change|0x52|0x54}}|Set Center Chunk|pre=unchanged}}
+ {{PacketList|{{change|0x53|0x55}}|Set Render Distance|pre=unchanged}}
+ {{PacketList|{{change|0x54|0x56}}|Set Default Spawn Position|pre=unchanged}}
+ {{PacketList|{{change|0x55|0x57}}|Display Objective|pre=unchanged}}
+ {{PacketList|{{change|0x56|0x58}}|Set Entity Metadata|pre=unchanged}}
+ {{PacketList|{{change|0x57|0x59}}|Link Entities|pre=unchanged}}
+ {{PacketList|{{change|0x58|0x5A}}|Set Entity Velocity|pre=unchanged}}
+ {{PacketList|{{change|0x59|0x5B}}|Set Equipment|pre=unchanged}}
+ {{PacketList|{{change|0x5A|0x5C}}|Set Experience|pre=unchanged}}
+ {{PacketList|{{change|0x5B|0x5D}}|Set Health|pre=unchanged}}
+ {{PacketList|{{change|0x5C|0x5E}}|Update Objectives|pre=unchanged}}
+ {{PacketList|{{change|0x5D|0x5F}}|Set Passengers|pre=unchanged}}
+ {{PacketList|{{change|0x5E|0x60}}|Update Teams|pre=unchanged}}
+ {{PacketList|{{change|0x5F|0x61}}|Update Score|pre=unchanged}}
+ {{PacketList|{{change|0x60|0x62}}|Set Simulation Distance|pre=unchanged}}
+ {{PacketList|{{change|0x61|0x63}}|Set Subtitle Text|pre=unchanged}}
+ {{PacketList|{{change|0x62|0x64}}|Update Time|pre=unchanged}}
+ {{PacketList|{{change|0x63|0x65}}|Set Title Text|pre=unchanged}}
+ {{PacketList|{{change|0x64|0x66}}|Set Title Animation Times|pre=unchanged}}
+ {{PacketList|{{change|0x65|0x67}}|Entity Sound Effect|pre=unchanged}}
+ {{PacketList|{{change|0x66|0x68}}|Sound Effect|pre=unchanged}}
+ {{PacketList|{{change|0x67|0x69}}|Start Configuration|pre=unchanged}}
+ {{PacketList|{{change|0x68|0x6A}}|Stop Sound|pre=unchanged}}
+ {{PacketList|0x6B|Store Cookie (Play)|rel=added}}
+ {{PacketList|{{change|0x69|0x6C}}|System Chat Message|pre=unchanged}}
+ {{PacketList|{{change|0x6A|0x6D}}|Set Tab List Header And Footer|pre=unchanged}}
+ {{PacketList|{{change|0x6B|0x6E}}|Tag Query Response|pre=unchanged}}
+ {{PacketList|{{change|0x6C|0x6F}}|Pickup Item|pre=unchanged}}
+ {{PacketList|{{change|0x6D|0x70}}|Teleport Entity|pre=unchanged}}
+ {{PacketList|{{change|0x6E|0x71}}|Set Ticking State|pre=unchanged}}
+ {{PacketList|{{change|0x6F|0x72}}|Step Tick|pre=unchanged}}
+ {{PacketList|0x73|Transfer (Play)|rel=added}}
+ {{PacketList|{{change|0x70|0x74}}|Update Advancements|pre=unchanged}}
+ {{PacketList|{{change|0x71|0x75}}|Update Attributes}}
+ {{PacketList|{{change|0x72|0x76}}|Entity Effect}}
+ {{PacketList|{{change|0x73|0x77}}|Update Recipes|pre=unchanged}}
+ {{PacketList|{{change|0x74|0x78}}|Update Tags (play)|pre=unchanged}}
   |-
-  | Data
+  !colspan="4"| Play serverbound
-  | Varies
+  {{PacketList|0x04|Chat Command}}
-  | Varies based on the particle type, see below.
+ {{PacketList|0x05|Signed Chat Command|rel=added}}
+ {{PacketList|{{change|0x05|0x06}}|Chat Message|pre=unchanged}}
+ {{PacketList|{{change|0x06|0x07}}|Player Session|pre=unchanged}}
+ {{PacketList|{{change|0x07|0x08}}|Chunk Batch Received|pre=unchanged}}
+ {{PacketList|{{change|0x08|0x09}}|Client Status|pre=unchanged}}
+ {{PacketList|{{change|0x09|0x0A}}|Client Information (play)|pre=unchanged}}
+ {{PacketList|{{change|0x0A|0x0B}}|Command Suggestions Request|pre=unchanged}}
+ {{PacketList|{{change|0x0B|0x0C}}|Acknowledge Configuration|pre=unchanged}}
+ {{PacketList|{{change|0x0C|0x0D}}|Click Container Button|pre=unchanged}}
+ {{PacketList|{{change|0x0D|0x0E}}|Click Container|pre=unchanged}}
+ {{PacketList|{{change|0x0E|0x0F}}|Close Container|pre=unchanged}}
+ {{PacketList|{{change|0x0F|0x10}}|Change Container Slot State|pre=unchanged}}
+ {{PacketList|0x11|Cookie Response (play)|rel=added}}
+ {{PacketList|{{change|0x10|0x12}}|Serverbound Plugin Message (play)|pre=unchanged}}
+ {{PacketList|0x13|Debug Sample Subscription|rel=added}}
+ {{PacketList|{{change|0x11|0x14}}|Edit Book|pre=unchanged}}
+ {{PacketList|{{change|0x12|0x15}}|Query Entity Tag|pre=unchanged}}
+ {{PacketList|{{change|0x13|0x16}}|Interact|pre=unchanged}}
+  {{PacketList|{{change|0x14|0x17}}|Jigsaw Generate|pre=unchanged}}
+ {{PacketList|{{change|0x15|0x18}}|Serverbound Keep Alive (play)|pre=unchanged}}
+ {{PacketList|{{change|0x16|0x19}}|Lock Difficulty|pre=unchanged}}
+ {{PacketList|{{change|0x17|0x1A}}|Set Player Position|pre=unchanged}}
+ {{PacketList|{{change|0x18|0x1B}}|Set Player Position and Rotation|pre=unchanged}}
+ {{PacketList|{{change|0x19|0x1C}}|Set Player Rotation|pre=unchanged}}
+ {{PacketList|{{change|0x1A|0x1D}}|Set Player On Ground|pre=unchanged}}
+ {{PacketList|{{change|0x1B|0x1E}}|Move Vehicle|pre=unchanged}}
+ {{PacketList|{{change|0x1C|0x1F}}|Paddle Boat|pre=unchanged}}
+ {{PacketList|{{change|0x1D|0x20}}|Pick Item|pre=unchanged}}
+ {{PacketList|{{change|0x1E|0x21}}|Ping Request (play)|pre=unchanged}}
+ {{PacketList|{{change|0x1F|0x22}}|Place Recipe|pre=unchanged}}
+ {{PacketList|{{change|0x20|0x23}}|Player Abilities|pre=unchanged}}
+ {{PacketList|{{change|0x21|0x24}}|Player Action|pre=unchanged}}
+ {{PacketList|{{change|0x22|0x25}}|Player Command|pre=unchanged}}
+ {{PacketList|{{change|0x23|0x26}}|Player Input|pre=unchanged}}
+ {{PacketList|{{change|0x24|0x27}}|Pong (play)|pre=unchanged}}
+ {{PacketList|{{change|0x25|0x28}}|Change Recipe Book Settings|pre=unchanged}}
+ {{PacketList|{{change|0x26|0x29}}|Set Seen Recipe|pre=unchanged}}
+ {{PacketList|{{change|0x27|0x2A}}|Rename Item|pre=unchanged}}
+ {{PacketList|{{change|0x28|0x2B}}|Resource Pack Response (play)|pre=unchanged}}
+ {{PacketList|{{change|0x29|0x2C}}|Seen Advancements|pre=unchanged}}
+ {{PacketList|{{change|0x2A|0x2D}}|Select Trade|pre=unchanged}}
+ {{PacketList|{{change|0x2B|0x2E}}|Set Beacon Effect|pre=unchanged}}
+ {{PacketList|{{change|0x2C|0x2F}}|Set Held Item|pre=unchanged}}
+ {{PacketList|{{change|0x2D|0x30}}|Program Command Block|pre=unchanged}}
+ {{PacketList|{{change|0x2E|0x31}}|Program Command Block Minecart|pre=unchanged}}
+ {{PacketList|{{change|0x2F|0x32}}|Set Creative Mode Slot|pre=unchanged}}
+ {{PacketList|{{change|0x30|0x33}}|Program Jigsaw Block|pre=unchanged}}
+ {{PacketList|{{change|0x31|0x34}}|Program Structure Block|pre=unchanged}}
+ {{PacketList|{{change|0x32|0x35}}|Update Sign|pre=unchanged}}
+ {{PacketList|{{change|0x33|0x36}}|Swing Arm|pre=unchanged}}
+ {{PacketList|{{change|0x34|0x37}}|Teleport To Entity|pre=unchanged}}
+ {{PacketList|{{change|0x35|0x38}}|Use Item On|pre=unchanged}}
+ {{PacketList|{{change|0x36|0x39}}|Use Item|pre=unchanged}}
   |}
-{| class="wikitable"
+== New/modified data types ==
- |-
- ! Particle Name
- ! Particle ID
- ! Data
- |-
- | <code>minecraft:ambient_entity_effect</code>
- | 0
- | None
- |-
- | <code>minecraft:angry_villager</code>
- | 1
- | None
- |-
- | <code>minecraft:barrier</code>
- | 2
- | None
- |-
- | <code>minecraft:block</code>
- | 3
- |
- {| class="wikitable"
-  ! Field Name
-  ! Field Type
-  ! Meaning
-  |-
-  | BlockState
-  | VarInt
-  | The ID of the block state.
-  |}
- |-
- | <code>minecraft:bubble</code>
- | 4
- | None
- |-
- | <code>minecraft:cloud</code>
- | 5
- | None
- |-
- | <code>minecraft:crit</code>
- | 6
- | None
- |-
- | <code>minecraft:damage_indicator</code>
- | 7
- | None
- |-
- | <code>minecraft:dragon_breath</code>
- | 8
- | None
- |-
- | <code>minecraft:dripping_lava</code>
- | 9
- | None
- |-
- | <code>minecraft:dripping_water</code>
- | 10
- | None
- |-
- | <code>minecraft:dust</code>
- | 11
- |
- {| class="wikitable"
-  ! Field Name
-  ! Field Type
-  ! Meaning
-  |-
-  | Red
-  | Float
-  | Red value, 0-1
-  |-
-  | Green
-  | Float
-  | Green value, 0-1
-  |-
-  | Blue
-  | Float
-  | Blue value, 0-1
-  |-
-  | Scale
-  | Float
-  | The scale, will be clamped between 0.01 and 4.
-  |}
- |-
- | <code>minecraft:effect</code>
- | 12
- | None
- |-
- | <code>minecraft:elder_guardian</code>
- | 13
- | None
- |-
- | <code>minecraft:enchanted_hit</code>
- | 14
- | None
- |-
- | <code>minecraft:enchant</code>
- | 15
- | None
- |-
- | <code>minecraft:end_rod</code>
- | 16
- | None
- |-
- | <code>minecraft:entity_effect</code>
- | 17
- | None
- |-
- | <code>minecraft:explosion_emitter</code>
- | 18
- | None
- |-
- | <code>minecraft:explosion</code>
- | 19
- | None
- |-
- | <code>minecraft:falling_dust</code>
- | 20
- |
- {| class="wikitable"
-  ! Field Name
-  ! Field Type
-  ! Meaning
-  |-
-  | BlockState
-  | VarInt
-  | The ID of the block state.
-  |}
- |-
- | <code>minecraft:firework</code>
- | 21
- | None
- |-
- | <code>minecraft:fishing</code>
- | 22
- | None
- |-
- | <code>minecraft:flame</code>
- | 23
- | None
- |-
- | <code>minecraft:happy_villager</code>
- | 24
- | None
- |-
- | <code>minecraft:heart</code>
- | 25
- | None
- |-
- | <code>minecraft:instant_effect</code>
- | 26
- | None
- |-
- | <code>minecraft:item</code>
- | 27
- |
- {| class="wikitable"
-  ! Field Name
-  ! Field Type
-  ! Meaning
-  |-
-  | Item
-  | [[Slot]]
-  | The item that will be used.
-  |}
- |-
- | <code>minecraft:item_slime</code>
- | 28
- | None
- |-
- | <code>minecraft:item_snowball</code>
- | 29
- | None
- |-
- | <code>minecraft:large_smoke</code>
- | 30
- | None
- |-
- | <code>minecraft:lava</code>
- | 31
- | None
- |-
- | <code>minecraft:mycelium</code>
- | 32
- | None
- |-
- | <code>minecraft:note</code>
- | 33
- | None
- |-
- | <code>minecraft:poof</code>
- | 34
- | None
- |-
- | <code>minecraft:portal</code>
- | 35
- | None
- |-
- | <code>minecraft:rain</code>
- | 36
- | None
- |-
- | <code>minecraft:smoke</code>
- | 37
- | None
- |-
- | <code>minecraft:spit</code>
- | 38
- | None
- |-
- | <code>minecraft:squid_ink</code>
- | 39
- | None
- |-
- | <code>minecraft:sweep_attack</code>
- | 40
- | None
- |-
- | <code>minecraft:totem_of_undying</code>
- | 41
- | None
- |-
- | <code>minecraft:underwater</code>
- | 42
- | None
- |-
- | <code>minecraft:splash</code>
- | 43
- | None
- |-
- | <code>minecraft:witch</code>
- | 44
- | None
- |-
- | <code>minecraft:bubble_pop</code>
- | 45
- | None
- |-
- | <code>minecraft:current_down</code>
- | 46
- | None
- |-
- | <code>minecraft:bubble_column_up</code>
- | 47
- | None
- |-
- | <code>minecraft:nautilus</code>
- | 48
- | None
- |-
- | <code>minecraft:dolphin</code>
- | 49
- | None
- |}
-=== [[Chat]] ===
+No changes so far.
-==== Selector component ====
+== Entity Metadata ==
-Displays the results of an entity selector.  '''Should not be sent to clients'''; only intended for commands and client-to-server actions.  If the component contains a <code>selector</code> key, then it is a selector component.
+{{#vardefine: meta_prerelease | 1}}
-The server resolves the list selector into a list of entities, each with an appropriate hover event, {{change|and joined with commas and "and" (but it lacks a [[wikipedia:serial comma|serial comma]])|joined with commas between each entry, without an "and"}}.
+{{Metadata type definition/begin}}
+  ! Value
-== Entity Metadata Format ==
-Note that entity metadata is a totally distinct concept from block metadata.  It is not required to send all metadata fields, or even any metadata fields, so long as the terminating entry is correctly sent.
-Entity Metadata is an array of entries, each of which looks like the following:
-{| class="wikitable"
- ! Name
- ! Type
- ! Meaning
- |-
- | Index
- | Unsigned Byte
- | Unique index key determining the meaning of the following value, see the table below. If this is <code>0xff</code> then the it is the end of the Entity Metadata array and no more is read.
- |-
- | Type
- | Optional Byte Enum
- | Only if Index is not <code>0xff</code>; the type of the index, see the table below
- |-
- | Value
- | Optional ''value of Type''
- | Only if Index is not <code>0xff</code>: the value of the metadata field
- |}
-{| class="wikitable"
- ! Value of Type field
-  ! [[Data types|Type]] of Value field
   ! Notes
- |-
+{{Metadata type definition|Byte}}
-  | 0
+  | {{Type|Byte}}
- | Byte
+  |
-  |
+{{Metadata type definition|VarInt}}
- |-
+  | {{Type|VarInt}}
-  | 1
+  |
-  | VarInt
+{{Metadata type definition|VarLong}}
- |
+  | {{Type|VarLong}}
-  |-
+  |
-  | 2
+{{Metadata type definition|Float}}
- | Float
+  | {{Type|Float}}
   |
-  |-
+{{Metadata type definition|String}}
- | 3
+  | {{Type|String}}
-  | String
+  |
-  |
+{{Metadata type definition|Text Component}}
- |-
+  | {{Type|Text Component}}
-  | 4
+  |
- | [[Chat]]
+{{Metadata type definition|Optional Text Component}}
-  |
+  | ({{Type|Boolean}}, {{Type|Optional}} {{Type|Text Component}})
- |- {{Added}}
+  | Text Component is present if the Boolean is set to true.
-  | 5
+{{Metadata type definition|Slot}}
- | OptChat (Boolean + Optional [[Chat]])
+  | {{Type|Slot}}
-  | [[Chat]] is present if the Boolean is set to true
+  |
- |-
+{{Metadata type definition|Boolean}}
-  | {{change|5|6}}
+  | {{Type|Boolean}}
-  | [[Slot]]
+  |
- |
+{{Metadata type definition|Rotations}}
- |-
+  | ({{Type|Float}}, {{Type|Float}}, {{Type|Float}})
-  | {{change|6|7}}
+  | rotation on x, rotation on y, rotation on z
-  | Boolean
+{{Metadata type definition|Position}}
- |
+  | {{Type|Position}}
-  |-
+  |
- | {{change|7|8}}
+{{Metadata type definition|Optional Position}}
-  | Rotation
+  | ({{Type|Boolean}}, {{Type|Optional}} {{Type|Position}})
- | 3 floats: rotation on x, rotation on y, rotation on z
+  | Position is present if the Boolean is set to true.
- |-
+{{Metadata type definition|Direction}}
- | {{change|8|9}}
+  | {{Type|VarInt}} {{Type|Enum}}
-  | [[Data Types#Position|Position]]
+  | Down = 0, Up = 1, North = 2, South = 3, West = 4, East = 5
-  |
+{{Metadata type definition|Optional UUID}}
- |-
+  | ({{Type|Boolean}}, {{Type|Optional}} {{Type|UUID}})
-  | {{change|9|10}}
+  | UUID is present if the Boolean is set to true.
- | OptPosition (Boolean + Optional Position)
+{{Metadata type definition|Block State}}
-  | Position is present if the Boolean is set to true
+  | {{Type|VarInt}}
- |-
+  | An ID in the block state registry.
-  | {{change|10|11}}
+{{Metadata type definition|Optional Block State}}
-  | Direction (VarInt)
+  | {{Type|VarInt}}
- | (Down = 0, Up = 1, North = 2, South = 3, West = 4, East = 5)
+  | 0 for absent (air is unrepresentable); otherwise, an ID in the block state registry.
- |-
+{{Metadata type definition|NBT}}
-  | {{change|11|12}}
+  | {{Type|NBT}}
- | OptUUID (Boolean + Optional UUID)
-  | UUID is present if the Boolean is set to true
-  |-
-  | {{change|12|13}}
-  | OptBlockID (VarInt)
-  | 0 for absent, otherwise index into the global palette.  (Air is treated as absent)
- |-
- | {{change|13|14}}
-  | [[NBT|NBT Tag]]
   |
- |- {{Added}}
+{{Metadata type definition|Particle}}
-  | 15
+  | ({{Type|VarInt}}, Varies)
-  | [[#Particle]]
+  | particle type (an ID in the <code>minecraft:particle_type</code> registry), particle data (See [[Particles]].)
- |
+{{Metadata type definition|Particles|rel=added}}
-  |}
+  | ({{Type|VarInt}}, Array of Particle)
+ | length of array, particle data (See directly above.)
-=== Entity ===
+{{Metadata type definition|Villager Data}}
+  | ({{Type|VarInt}}, {{Type|VarInt}}, {{Type|VarInt}})
-The base class.
+  | villager type, villager profession, level (See below.)
+{{Metadata type definition|Optional VarInt}}
-{| class="wikitable"
+  | {{Type|VarInt}}
-  ! Index
+  | 0 for absent; 1 + actual value otherwise. Used for entity IDs.
- ! Type
+{{Metadata type definition|Pose}}
- !style="width: 250px;" colspan="2"| Meaning
+  | {{Type|VarInt}} {{Type|Enum}}
- ! Default
+  | STANDING = 0, FALL_FLYING = 1, SLEEPING = 2, SWIMMING = 3, SPIN_ATTACK = 4, SNEAKING = 5, LONG_JUMPING = 6, DYING = 7, CROAKING = 8, USING_TONGUE = 9, SITTING = 10, ROARING = 11, SNIFFING = 12, EMERGING = 13, DIGGING = 14{{change||2=, SLIDING = 15, SHOOTING = 16, INHALING = 17}}
-  |-
+{{Metadata type definition|Cat Variant}}
- |rowspan="9"| 0
+  | {{Type|VarInt}}
-  |rowspan="9"| Byte
+  | An ID in the <code>minecraft:cat_variant</code> registry.
-  ! Bit mask
+{{Metadata type definition|Wolf Variant|rel=added}}
- ! Meaning
+  | {{Type|VarInt}}
- |rowspan="9"| 0
+  | An ID in the <code>minecraft:wolf_variant</code> registry.
- |-
+{{Metadata type definition|Frog Variant}}
-  | 0x01
+  | {{Type|VarInt}}
- | On Fire
+  | An ID in the <code>minecraft:frog_variant</code> registry.
-  |-
+{{Metadata type definition|Optional Global Position}}
- | 0x02
+  | ({{Type|Boolean}}, {{Type|Optional}} {{Type|Identifier}}, {{Type|Optional}} {{Type|Position}})
- | Crouched
+  | dimension identifier, position; only if the Boolean is set to true.
- |-
+{{Metadata type definition|Painting Variant}}
-  | 0x04
+  | {{Type|VarInt}}
- | Unused (previously riding)
+  | An ID in the <code>minecraft:painting_variant</code> registry.
-  |-
+{{Metadata type definition|Sniffer State}}
- | 0x08
+  | {{Type|VarInt}} {{Type|Enum}}
- | Sprinting
+  | IDLING = 0, FEELING_HAPPY = 1, SCENTING = 2, SNIFFING = 3, SEARCHING = 4, DIGGING = 5, RISING = 6
-  |-
+{{Metadata type definition|Armadillo State|rel=added}}
- | 0x10
+  | {{Type|VarInt}} {{Type|Enum}}
-  | Unused (previously eating/drinking/blocking; use hand state now)
+  | IDLE = 0, ROLLING = 1, SCARED = 2
- |-
+{{Metadata type definition|Vector3}}
-  | 0x20
+  | ({{Type|Float}}, {{Type|Float}}, {{Type|Float}})
- | Invisible
+  | x, y, z
-  |-
+{{Metadata type definition|Quaternion}}
- | 0x40
+  | ({{Type|Float}}, {{Type|Float}}, {{Type|Float}}, {{Type|Float}})
-  | Glowing effect
+  | x, y, z, w
- |-
- | 0x80
- | Flying with {{Minecraft Wiki|elytra}}
- |-
-  | 1
- | VarInt
-  |colspan="2"| Air
-  | 300
- |-
-  | 2
- | {{change|String|OptChat}}
-  |colspan="2"| Custom name
- | empty
-  |-
- | 3
- | Boolean
-  |colspan="2"| Is custom name visible
-  | false
- |-
- | 4
- | Boolean
-  |colspan="2"| Is silent
- | false
-  |-
- | 5
- | Boolean
- |colspan="2"| No gravity
-  | false
   |}
-=== AreaEffectCloud ===
+=== Living Entity ===
-Extends [[#Entity|Entity]].
+TODO: This has changed to use the PARTICLES attribute
-{| class="wikitable"
+=== Wolf ===
- ! Index
- ! Type
- !style="width: 250px;" colspan="2"| Meaning
- ! Default
- |-
- | 6
- | Float
- |colspan="2"| Radius
- | 0.5
- |-
- | 7
- | VarInt
- |colspan="2"| Color (only for mob spell particle)
- | 0
- |-
- | 8
- | Boolean
- |colspan="2"| Ignore radius and show effect as single point, not area
- | false
- |- {{Added}}
- | 9
- | Particle
- | colspan="2"| The [[#Particle]]
- | <code>effect</code>
- |- {{Removed}}
- | 9
- | VarInt
- |colspan="2"| Particle ID
- | 15 (mobSpell)
- |- {{Removed}}
- | 10
- | VarInt
- |colspan="2"| Particle parameter 1
- | 0
- |- {{Removed}}
- | 11
- | VarInt
- |colspan="2"| Particle parameter 2
- | 0
- |}
-=== Trident ===
+{{Metadata inherit|Wolf|inherits=Tameable Animal}}
-Extends [[#Arrow|Arrow]].
-{| class="wikitable" {{Added}}
- ! Index
- ! Type
- !style="width: 250px;" colspan="2"| Meaning
- ! Default
- |-
- | 7
- | VarInt
- |colspan="2"| Loyalty level (enchantment)
- | 0
- |}
-=== Boat ===
-Extends [[#Entity|Entity]].
 {| class="wikitable"
@@ Line 688: / Line 331: @@
   !style="width: 250px;" colspan="2"| Meaning
   ! Default
+ |- {{added}}
+ | {{Metadata id|}}
+ | {{Metadata type|Wolf Variant}}
+ |colspan="2"| Wolf Variant
+ | PALE
   |-
-  | 6
+  | {{Metadata id|}}
- | VarInt
+  | {{Metadata type|Boolean}}
- |colspan="2"| Time since last hit
+  |colspan="2"| Is begging
-  | 0
- |-
- | 7
- | VarInt
- |colspan="2"| Forward direction
- | 1
- |-
- | 8
- | Float
- |colspan="2"| Damage taken
- | 0.0
- |-
- | 9
- | VarInt
- |colspan="2"| Type (0=oak, 1=spruce, 2=birch, 3=jungle, 4=acacia, 5=dark oak)
- | 0
- |-
- | 10
- | Boolean
-  |colspan="2"| Right paddle turning
   | false
   |-
-  | 11
+  | {{Metadata id|}}
- | Boolean
+  | {{Metadata type|VarInt}}
- |colspan="2"| Left paddle turning
+  |colspan="2"| Collar color (values are those {{Minecraft Wiki|Data_values#Dyes|used with dyes}})
- | false
+  | 14 (Red)
- |- {{Added}}
-  | 12
- | VarInt
-  |colspan="2"| Splash timer (?)
- | 0
- |}
-=== Phantom ===
-Extends [[#Flying|Flying]].
-{| class="wikitable" {{Added}}
-  ! Index
- ! Type
- !style="width: 250px;" colspan="2"| Meaning
- ! Default
   |-
-  | 12
+  | {{Metadata id|}}
-  | VarInt
+  | {{Metadata type|VarInt}}
-  |colspan="2"| Size
+  |colspan="2"| Anger time
   | 0
   |}
-Hitbox size is determined by horizontal=0.9 + 0.2*size and vertical=0.5 + 0.1 * i
+=== Armadillo ===
-=== Dolphin ===
+{{Metadata inherit|Armadillo|inherits=Animal|start_at=17}}
+{| class="wikitable" {{added}}
-Extends [[#Creature|Creature]].
-No additional metadata.
-=== WaterMob ===
-Extends {{Change|[[#Insentient|Insentient]]|[[#Creature|Creature]]}}.
-No additional metadata.
-=== Abstract fish ===
-Extends [[#WaterMob|WaterMob]].
-{| class="wikitable" {{Added}}
   ! Index
   ! Type
@@ Line 765: / Line 362: @@
   ! Default
   |-
-  | 12
+  | {{Metadata id|added}}
-  | Boolean
+  | {{Metadata type|Armadillo State}}
-  |colspan="2"| From bucket
+  |colspan="2"| Armadillo State
-  | False
+  | IDLE
   |}
-=== Cod ===
+== Block Actions ==
-Extends [[#AbstractFish|AbstractFish]].
+No changes so far.
-No additional metadata.
+== Inventories ==
-=== Puffer fish ===
+No changes so far.
-Extends [[#AbstractFish|AbstractFish]].
-{| class="wikitable" {{Added}}
- ! Index
- ! Type
- !style="width: 250px;" colspan="2"| Meaning
- ! Default
- |-
- | 13
- | VarInt
- |colspan="2"| PuffState (varies from 0 to 2)
- | 0
- |}
-=== Salmon ===
-Extends [[#AbstractFish|AbstractFish]].
-No additional metadata.
-=== Tropical fish ===
-Extends [[#AbstractFish|AbstractFish]].
-{| class="wikitable" {{Added}}
- ! Index
- ! Type
- !style="width: 250px;" colspan="2"| Meaning
- ! Default
- |-
- | 13
- | VarInt
- |colspan="2"| Variant
- | 0
- |}
-=== Turtle ===
-Extends [[#Animal|Animal]].
-{| class="wikitable" {{Added}}
- ! Index
- ! Type
- !style="width: 250px;" colspan="2"| Meaning
- ! Default
- |-
- | 13
- | BlockPos
- |colspan="2"| Home pos
- | (0, 0, 0)
- |-
- | 14
- | Boolean
- |colspan="2"| Has egg
- | false
- |-
- | 15
- | Boolean
- |colspan="2"| Laying egg (?)
- | false
- |-
- | 16
- | BlockPos
- |colspan="2"| Travel pos
- | (0, 0, 0)
- |-
- | 17
- | Boolean
- |colspan="2"| Going home
- | false
- |-
- | 18
- | Boolean
- |colspan="2"| Traveling
- | false
- |}
-=== Drowned ===
-Extends [[#Drowned|Drowned]].
-{| class="wikitable" {{Added}}
- ! Index
- ! Type
- !style="width: 250px;" colspan="2"| Meaning
- ! Default
- |-
- | 15
- | Boolean
- |colspan="2"| Has target (?)
- | false
- |}
-== Block Actions ==
-No changes so far.
 == Plugin Channels ==
-All clientbound channels have been renamed to be namespaced identifiers.
+No changes so far.
-=== <code>minecraft:register</code> ===
+== Handshake ==
-Formerly <code>REGISTER</code>.
+=== Serverbound ===
-=== <code>minecraft:unregister</code> ===
+==== Handshake ====
-Formerly <code>UNREGISTER</code>.
+This causes the server to switch into the target state.
-=== <code>minecraft:brand</code> ===
+{| class="wikitable"
+ ! Packet ID
-Formerly <code>MC|Brand</code>.
+ ! State
+ ! Bound To
-=== <code>minecraft:book_open</code> ===
+  ! Field Name
+  ! Field Type
-Formerly <code>MC|BOpen</code>.
-=== <code>minecraft:trader_list</code> ===
-Formerly <code>MC|TrList</code>.
-=== <code>MC|StopSound</code> ===
-{{Change|''Server to client''}}
-{{Change|Used to implement {{Minecraft Wiki|Commands#StopSound|the <code>/stopsound</code> command}}.  Stops a sound that is currently playing on the client.}}
-{| class="wikitable" {{Removed}}
-  ! Field name
-  ! Field type
   ! Notes
   |-
-  | Sound category
+  | rowspan="4"| 0x00
-  | String
+ | rowspan="4"| Handshaking
-  | Should be one of the sound categories used in [[Protocol#Named Sound Effect|Named Sound Effect]], but if it's invalid or empty then it is (intentionally) treated as ''all'' sound categories.
+  | rowspan="4"| Server
+ | Protocol Version
+  | [[#Definitions:varint|VarInt]]
+ | See [[protocol version numbers]] (currently 765 in Minecraft 1.20.4).
   |-
-  | Sound name
+  | Server Address
-  | String
+  | [[#Definitions:string|String]] (255)
-  | A [http://pokechu22.github.io/Burger/1.13.html#sounds sound effect name].  If left empty, ''all'' sounds are stopped.
+  | Hostname or IP, e.g. localhost or 127.0.0.1, that was used to connect. The Notchian server does not use this information. Note that SRV records are a simple redirect, e.g. if _minecraft._tcp.example.com points to mc.example.org, users connecting to example.com will provide example.org as server address in addition to connecting to it.
- |}
-{{Change|Emptiness of sound category or sound name can be combined, IE a empty sound name but a set sound category will stop all sounds in the given category.}}
-{{Change||This plugin channel has been replaced by the [[#Stop sound|stop sound]] packet.}}
-=== <code>minecraft:debug/paths</code> ===
-Formerly <code>MC|DebugPath</code>.
-=== <code>minecraft:debug/neighbors_update</code> ===
-Formerly <code>MC|DebugNeighborsUpdate</code>.
-=== <code>minecraft:debug/caves</code> ===
-Never sent, but (presumably) used to debug caves.  Does not render without modifying the client.
-{| class="wikitable" {{Added}}
- !colspan="2"| Field name
- !colspan="2"| Field type
- ! Notes
   |-
-  |colspan="2"| Unknown 1
+  | Server Port
-  |colspan="2"| Position
+  | [[#Definitions:unsigned-short|Unsigned Short]]
-  |
+  | Default is 25565. The Notchian server does not use this information.
   |-
-  |colspan="2"| Count
+  | Next State
-  |colspan="2"| Int
+  | [[#Definitions:varint|VarInt]] [[#Definitions:enum|Enum]]
- | Number of elements in the following array
+  | 1 for [[#Status|Status]], 2 for [[#Login|Login]]{{change||, 3 for [[#Login|Transfer]]}}.
-  |-
- |rowspan="2"| Data
- | Unknown 2
- |rowspan="2"| Array
- | Position
- |
- |-
- | Unknown 3
- | Float
- |
   |}
-=== <code>minecraft:debug/structures</code> ===
+== Status ==
-Never sent, but (presumably) used to debug structures.  Does not render without modifying the client.
+=== Clientbound ===
-{| class="wikitable" {{Added}}
+No changes so far.
- !colspan="2"| Field name
- !colspan="2"| Field type
- ! Notes
- |-
- |colspan="2"| Unknown 1
- |colspan="2"| Int
- |
- |-
- |colspan="2"| Bounding box minX
- |colspan="2"| Int
- |rowspan="6"| min must be less than max
- |-
- |colspan="2"| Bounding box minY
- |colspan="2"| Int
- |-
- |colspan="2"| Bounding box minZ
- |colspan="2"| Int
- |-
- |colspan="2"| Bounding box maxX
- |colspan="2"| Int
- |-
- |colspan="2"| Bounding box maxY
- |colspan="2"| Int
- |-
- |colspan="2"| Bounding box maxZ
- |colspan="2"| Int
- |-
- |colspan="2"| Count
- |colspan="2"| Int
- | Number of elements in the following array
- |-
- |rowspan="7"| Unknown
- | Bounding box minX
- |rowspan="7"| Array
- | Int
- |rowspan="6"| min must be less than max
- |-
- | Bounding box minY
- | Int
- |-
- | Bounding box minZ
- | Int
- |-
- | Bounding box maxX
- | Int
- |-
- | Bounding box maxY
- | Int
- |-
- | Bounding box maxZ
- | Int
- |-
- | Unknown
- | Boolean
- |
- |}
-=== <code>minecraft:debug/worldgen_attempt</code> ===
+=== Serverbound ===
-Never sent, but (presumably) used to debug something with world generation.  Does not render without modifying the client.
+No changes so far.
-{{warning|This channel is invalid, as its name is longer than the max length (23 > 20).}}
+== Login ==
-{| class="wikitable" {{Added}}
- ! Field name
- ! Field type
- ! Notes
- |-
- | Unknown 1
- | Position
- |
- |-
- | Unknown 2
- | Float
- |
- |-
- | Unknown 3
- | Float
- |
- |-
- | Unknown 4
- | Float
- |
- |-
- | Unknown 5
- | Float
- |
- |-
- | Unknown 6
- | Float
- |
- |}
-== Play ==
 === Clientbound ===
-==== Spawn Painting ====
+==== Encryption Request ====
-This packet shows location, name, and type of painting.
 {| class="wikitable"
@@ Line 1,074: / Line 440: @@
   ! Notes
   |-
-  |rowspan="5"| 0x04
+  | rowspan="6"| 0x01
-  |rowspan="5"| Play
+  | rowspan="6"| Login
-  |rowspan="5"| Client
+  | rowspan="6"| Client
-  | Entity ID
+  | Server ID
-  | VarInt
+  | {{Type|String}} (20)
-  |
+  | Appears to be empty.
   |-
-  | Entity UUID
+  | Public Key Length
-  | UUID
+  | {{Type|VarInt}}
-  |
+  | Length of Public Key.
   |-
-  | Motive
+  | Public Key
-  | {{Change|String (13)|VarInt}}
+  | {{Type|Byte Array}}
-  | {{Change|Name of the painting. Max length 13|Panting's ID, see below}}
+  | The server's public key, in bytes.
   |-
-  | Location
+  | Verify Token Length
-  | Position
+  | {{Type|VarInt}}
-  | Center coordinates (see below)
+  | Length of Verify Token. Always 4 for Notchian servers.
   |-
-  | Direction
+  | Verify Token
-  | Byte Enum
+  | {{Type|Byte Array}}
-  | Direction the painting faces (North = 2, South = 0, West = 1, East = 3)
+  | A sequence of random bytes generated by the server.
+ |- {{added}}
+ | Should Authenticate
+ | {{Type|Boolean}}
+ |
   |}
-Calculating the center of an image: given a (width × height) grid of cells, with <code>(0, 0)</code> being the top left corner, the center is <code>(max(0, width / 2 - 1), height / 2)</code>. E.g. <code>(1, 0)</code> for a 2×1 painting, or <code>(1, 2)</code> for a 4×4 painting.
+==== Cookie Request (login) ====
-List of paintings by coordinates in <code>paintings_kristoffer_zetterstrand.png</code> (where x and y are in pixels from the top left and width and height are in pixels or 16ths of a block):
+Requests a cookie that was previously stored.
-{| class="wikitable"
+{| class="wikitable" {{added}}
- ! Name
+  ! Packet ID
- !{{Added}}| ID
+  ! State
-  ! x
+  ! Bound To
-  ! y
+  ! colspan="2"| Field Name
-  ! width
+  ! colspan="2"| Field Type
-  ! height
+  ! Notes
- |-
-  | {{Change|<code>Kebab</code>|<code>minecraft:kebab</code>}}
- | 0
- | 0
- | 0
- | 16
- | 16
- |-
- | {{Change|<code>Aztec</code>|<code>minecraft:aztec</code>}}
- | 1
- | 16
- | 0
- | 16
- | 16
- |-
- | {{change|<code>Alban</code>|<code>minecraft:alban</code>}}
- | 2
- | 32
-  | 0
- | 16
- | 16
- |-
- | {{change|<code>Aztec2</code>|<code>minecraft:aztec2</code>}}
- | 3
- | 48
- | 0
- | 16
- | 16
- |-
- | {{change|<code>Bomb</code>|<code>minecraft:bomb</code>}}
- | 4
- | 64
- | 0
- | 16
- | 16
- |-
- | {{change|<code>Plant</code>|<code>minecraft:plant</code>}}
- | 5
- | 80
- | 0
- | 16
- | 16
- |-
- | {{change|<code>Wasteland</code>|<code>minecraft:wasteland</code>}}
- | 6
- | 96
- | 0
- | 16
- | 16
- |-
- | {{change|<code>Pool</code>|<code>minecraft:pool</code>}}
- | 7
- | 0
- | 32
- | 32
- | 16
- |-
- | {{change|<code>Courbet</code>|<code>minecraft:courbet</code>}}
- | 8
- | 32
- | 32
- | 32
- | 16
   |-
-  | {{change|<code>Sea</code>|<code>minecraft:sea</code>}}
+  | rowspan="1"| 0x05
- | 9
+  | rowspan="1"| Login
- | 64
+  | rowspan="1"| Client
- | 32
+  | colspan="2"| Key
- | 32
+  | colspan="2"| Identifier
- | 16
+  | The identifier of the cookie.
- |-
- | {{change|<code>Sunset</code>|<code>minecraft:sunset</code>}}
- | 10
- | 96
- | 32
- | 32
- | 16
- |-
- | {{change|<code>Creebet</code>|<code>minecraft:creebet</code>}}
- | 11
- | 128
- | 32
- | 32
- | 16
- |-
- | {{change|<code>Wanderer</code>|<code>minecraft:wanderer</code>}}
- | 12
- | 0
-  | 64
- | 16
-  | 32
- |-
-  | {{change|<code>Graham</code>|<code>minecraft:graham</code>}}
-  | 13
- | 16
- | 64
- | 16
- | 32
- |-
- | {{change|<code>Match</code>|<code>minecraft:match</code>}}
- | 14
- | 0
- | 128
- | 32
- | 32
- |-
- | {{change|<code>Bust</code>|<code>minecraft:bust</code>}}
- | 15
- | 32
- | 128
- | 32
- | 32
- |-
- | {{change|<code>Stage</code>|<code>minecraft:stage</code>}}
- | 16
- | 64
- | 128
- | 32
- | 32
- |-
- | {{change|<code>Void</code>|<code>minecraft:void</code>}}
- | 17
- | 96
- | 128
- | 32
- | 32
- |-
- | {{change|<code>SkullAndRoses</code>|<code>skull_and_roses</code>}}
- | 18
- | 128
- | 128
- | 32
- | 32
- |-
- | {{change|<code>Wither</code>|<code>minecraft:wither</code>}}
- | 19
- | 160
- | 128
- | 32
- | 32
- |-
- | {{change|<code>Fighters</code>|<code>minecraft:fighters</code>}}
- | 20
- | 0
- | 96
- | 64
- | 32
- |-
- | {{change|<code>Pointer</code>|<code>minecraft:pointer</code>}}
- | 21
- | 0
- | 192
- | 64
- | 64
- |-
- | {{change|<code>Pigscene</code>|<code>minecraft:pigscene</code>}}
- | 22
- | 64
- | 192
- | 64
- | 64
- |-
- | {{change|<code>BurningSkull</code>|<code>minecraft:burning_skull</code>}}
- | 23
- | 128
- | 192
- | 64
- | 64
- |-
- | {{change|<code>Skeleton</code>|<code>minecraft:skeleton</code>}}
- | 24
- | 192
- | 64
- | 64
- | 48
- |-
- | {{change|<code>DonkeyKong</code>|<code>minecraft:donkey_kong</code>}}
- | 25
- | 192
- | 112
- | 64
-  | 48
   |}
-The {{Minecraft Wiki|Painting#Canvases|Minecraft Wiki article on paintings}} also provides a list of painting names to the actual images.
+=== Serverbound ===
-==== Statistics ====
+==== Cookie Response (login) ====
-Sent as a response to [[#Client_Status|Client Status]] (id 1).
+Response to a [[#Cookie_Request_(login)|Cookie Request (login)]] from the server. The Notchian server only accepts responses of up to 5 kiB in size.
-{| class="wikitable"
+{| class="wikitable" {{added}}
   ! Packet ID
   ! State
   ! Bound To
-  !colspan="2"| Field Name
+  ! colspan="2"| Field Name
-  !colspan="2"| Field Type
+  ! colspan="2"| Field Type
   ! Notes
   |-
-  |rowspan="6"| 0x07
+  | rowspan="4"| 0x04
-  |rowspan="6"| Play
+  | rowspan="4"| Login
-  |rowspan="6"| Client
+  | rowspan="4"| Server
-  |colspan="2"| Count
+  | colspan="2"| Key
-  |colspan="2"| VarInt
+  | colspan="2"| Identifier
-  | Number of elements in the following array
+  | The identifier of the cookie.
- |-
- |rowspan="4"| Statistic
- |{{Removed}}| Name
- |rowspan="4"| Array
- |{{Removed}}| String (32767)
- |{{Removed}}| [https://gist.github.com/Alvin-LB/8d0d13db00b3c00fd0e822a562025eff https://gist.github.com/Alvin-LB/8d0d13db00b3c00fd0e822a562025eff]
- |- {{Added}}
- | Category ID
- | VarInt
- | See below
- |- {{Added}}
- | Statistic ID
- | VarInt
- | See below
- |-
- | Value
- | VarInt
- | The amount to set it to
- |}
-Categories (these are namespaced, but with <code>:</code>. replaced with <code>.</code>):
-{| class="wikitable"
- ! Name
- ! ID
- ! Registry
- |-
- | <code>minecraft.mined</code>
- | 0
- | Blocks
- |-
- | <code>minecraft.crafted</code>
- | 1
- | Items
- |-
- | <code>minecraft.used</code>
- | 2
- | Items
- |-
- | <code>minecraft.broken</code>
- | 3
- | Items
- |-
- | <code>minecraft.picked_up</code>
- | 4
- | Items
   |-
-  | <code>minecraft.dropped</code>
+  | colspan="2"| Has Payload
-  | 5
+  | colspan="2"| Boolean
-  | Items
+  | The payload is only present if the cookie exists on the client.
   |-
-  | <code>minecraft.killed</code>
+  | colspan="2"| Payload Length
- | 6
+  | colspan="2"| VarInt
-  | Entities
+  | Length of the following byte array.
- |-
-  | <code>minecraft.killed_by</code>
- | 7
- | Entities
   |-
-  | <code>minecraft.custom</code>
+  | colspan="2"| Payload
-  | 8
+  | colspan="2"| Optional Byte Array (5120)
-  | Custom
+  | The data of the cookie, if any.
   |}
-Blocks, Items, and Entities use block (not block state), item, and entity ids.
+== Configuration ==
-Custom has the following (unit only matters for clients):
+=== Clientbound ===
-{| class="wikitable"
- ! Name
- ! ID
- ! Unit
- |-
- | <code>minecraft.leave_game</code>
- | 0
- | None
- |-
- | <code>minecraft.play_one_minute</code>
- | 1
- | Time
- |-
- | <code>minecraft.time_since_death</code>
- | 2
- | Time
- |-
- | <code>minecraft.sneak_Time</code>
- | 3
- | Time
- |-
- | <code>minecraft.walk_one_cm</code>
- | 4
- | Distance
- |-
- | <code>minecraft.crouch_one_cm</code>
- | 5
- | Distance
- |-
- | <code>minecraft.sprint_one_cm</code>
- | 6
- | Distance
- |-
- | <code>minecraft.swim_one_cm</code>
- | 7
- | Distance
- |-
- | <code>minecraft.fall_one_cm</code>
- | 8
- | Distance
- |-
- | <code>minecraft.climb_one_cm</code>
- | 9
- | Distance
- |-
- | <code>minecraft.fly_one_cm</code>
- | 10
- | Distance
- |-
- | <code>minecraft.dive_one_cm</code>
- | 11
- | Distance
- |-
- | <code>minecraft.minecart_one_cm</code>
- | 12
- | Distance
- |-
- | <code>minecraft.boat_one_cm</code>
- | 13
- | Distance
- |-
- | <code>minecraft.pig_one_cm</code>
- | 14
- | Distance
- |-
- | <code>minecraft.horse_one_cm</code>
- | 15
- | Distance
- |-
- | <code>minecraft.aviate_one_cm</code>
- | 16
- | Distance
- |-
- | <code>minecraft.jump</code>
- | 17
- | None
- |-
- | <code>minecraft.drop</code>
- | 18
- | None
- |-
- | <code>minecraft.damage_dealt</code>
- | 19
- | Damage
- |-
- | <code>minecraft.damage_taken</code>
- | 20
- | Damage
- |-
- | <code>minecraft.deaths</code>
- | 21
- | None
- |-
- | <code>minecraft.mob_kills</code>
- | 22
- | None
- |-
- | <code>minecraft.animals_bred</code>
- | 23
- | None
- |-
- | <code>minecraft.player_kills</code>
- | 24
- | None
- |-
- | <code>minecraft.fish_caught</code>
- | 25
- | None
- |-
- | <code>minecraft.talked_to_villager</code>
- | 26
- | None
- |-
- | <code>minecraft.traded_with_villager</code>
- | 27
- | None
- |-
- | <code>minecraft.eat_cake_slice</code>
- | 28
- | None
- |-
- | <code>minecraft.fill_cauldron</code>
- | 29
- | None
- |-
- | <code>minecraft.use_cauldron</code>
- | 30
- | None
- |-
- | <code>minecraft.clean_armor</code>
- | 31
- | None
- |-
- | <code>minecraft.clean_banner</code>
- | 32
- | None
- |-
- | <code>minecraft.interact_with_brewingstand</code>
- | 33
- | None
- |-
- | <code>minecraft.interact_with_beacon</code>
- | 34
- | None
- |-
- | <code>minecraft.inspect_dropper</code>
- | 35
- | None
- |-
- | <code>minecraft.inspect_hopper</code>
- | 36
- | None
- |-
- | <code>minecraft.inspect_dispenser</code>
- | 37
- | None
- |-
- | <code>minecraft.play_noteblock</code>
- | 38
- | None
- |-
- | <code>minecraft.tune_noteblock</code>
- | 39
- | None
- |-
- | <code>minecraft.pot_flower</code>
- | 40
- | None
- |-
- | <code>minecraft.trigger_trapped_chest</code>
- | 41
- | None
- |-
- | <code>minecraft.open_enderchest</code>
- | 42
- | None
- |-
- | <code>minecraft.enchant_item</code>
- | 43
- | None
- |-
- | <code>minecraft.play_record</code>
- | 44
- | None
- |-
- | <code>minecraft.interact_with_furnace</code>
- | 45
- | None
- |-
- | <code>minecraft.interact_with_crafting_table</code>
- | 46
- | None
- |-
- | <code>minecraft.open_chest</code>
- | 47
- | None
- |-
- | <code>minecraft.sleep_in_bed</code>
- | 48
- | None
- |-
- | <code>minecraft.open_shulker_box</code>
- | 49
- | None
- |}
-Units:
+==== Cookie Request (configuration) ====
-* None: just a normal number (formatted with 0 decimal places)
+Requests a cookie that was previously stored.
-* Damage: value is 10 times the normal amount
-* Distance: a distance in centimeters (hundredths of blocks)
-* Time: a time span in ticks
-==== Update Block Entity ====
+{| class="wikitable" {{added}}
-Sets tile entity associated with the block at the given location.
-{| class="wikitable"
   ! Packet ID
   ! State
   ! Bound To
-  ! Field Name
+  ! colspan="2"| Field Name
-  ! Field Type
+  ! colspan="2"| Field Type
   ! Notes
   |-
-  |rowspan="3"| 0x09
+  | rowspan="1"| 0x00
-  |rowspan="3"| Play
+  | rowspan="1"| Configuration
-  |rowspan="3"| Client
+  | rowspan="1"| Client
-  | Location
+  | colspan="2"| Key
- | Position
+  | colspan="2"| Identifier
-  |
+  | The identifier of the cookie.
- |-
- | Action
- | Unsigned Byte
-  | The type of update to perform, see below
- |-
- | NBT Data
- | [[NBT|NBT Tag]]
- | Data to set.  May be a TAG_END (0), in which case the block entity at the given location is removed (though this is not required since the client will remove the block entity automatically on chunk unload or block removal)
   |}
-''Action'' field:
+==== Reset Chat ====
-* '''1''': Set data of a mob spawner (everything except for SpawnPotentials: current delay, min/max delay, mob to be spawned, spawn count, spawn range, etc.)
-* '''2''': Set command block text (command and last execution status)
-* '''3''': Set the level, primary, and secondary powers of a beacon
-* '''4''': Set rotation and skin of mob head
-* {{Change|'''5''': Set type of flower in flower pot}}
-* {{Change||'''5''': Declare a conduit}}
-* '''6''': Set base color and patterns on a banner
-* '''7''': Set the data for a Structure tile entity
-* '''8''': Set the destination for a end gateway
-* '''9''': Set the text on a sign
-* '''10''': Declare a shulker box, no data appears to be sent and the client seems to do fine without this packet. Perhaps it is a leftover from earlier versions?
-* '''11''': {{change|Set the color of a bed|Declare a bed}}
-==== Block Change ====
+{| class="wikitable" {{added}}
-Fired whenever a block is changed within the render distance.
-{{Warning2|Changing a block in a chunk that is not loaded is not a stable action.  The Notchian client currently uses a ''shared'' empty chunk which is modified for all block changes in unloaded chunks; while in 1.9 this chunk never renders in older versions the changed block will appear in all copies of the empty chunk.  Servers should avoid sending block changes in unloaded chunks and clients should ignore such packets.}}
-{| class="wikitable"
   ! Packet ID
   ! State
@@ Line 1,651: / Line 556: @@
   ! Notes
   |-
-  |rowspan="2"| 0x0B
+  | 0x06
-  |rowspan="2"| Play
+  | Configuration
-  |rowspan="2"| Client
+  | Client
-  | Location
+  | colspan="3"| ''no fields''
- | Position
- | Block Coordinates
- |-
- | Block ID
- | VarInt
- | The new block state ID for the block as given in the [[#global palette|global palette]].  {{change|(When reading data: <code>type {{=}} id >> 4</code>, <code>meta {{=}} id & 15</code>, when writing data: <code>id {{=}} type << 4 {{!}} (meta & 15)</code>)|See that section for more information.}}
   |}
-==== Multi Block Change ====
+==== Registry Data ====
-Fired whenever 2 or more blocks are changed within the same chunk on the same tick.
+Represents certain registries that are sent from the server and are applied on the client. {{change||The packet is sent for each of the following registries: <code>minecraft:worldgen/biome</code>, <code>minecraft:chat_type</code>, <code>minecraft:trim_pattern</code>, <code>minecraft:trim_material</code>, <code>minecraft:wolf_variant</code>, <code>minecraft:dimension_type</code>, <code>minecraft:damage_type</code>, and <code>minecraft:banner_pattern</code>.}}
-{{Warning|Changing blocks in chunks not loaded by the client is unsafe (see note on [[#Block Change|Block Change]]).}}
 {| class="wikitable"
@@ Line 1,673: / Line 570: @@
   ! State
   ! Bound To
-  !colspan="2"| Field Name
+  ! colspan="2"| Field Name
-  !colspan="2"| Field Type
+  ! colspan="2"| Field Type
   ! Notes
   |-
-  |rowspan="6"| {{Change|0x10|0x0F}}
+  | rowspan="6"| 0x07
-  |rowspan="6"| Play
+  | rowspan="6"| Configuration
-  |rowspan="6"| Client
+  | rowspan="6"| Client
-  |colspan="2"| Chunk X
+  |{{removed}} colspan="2"| Registry Codec
-  |colspan="2"| Int
+  |{{removed}} colspan="2"| {{Type|NBT}} (Compound)
-  | Chunk X coordinate
+  |{{removed}}| See [[Registry Data]].
-  |-
+  |- {{added}}
-  |colspan="2"| Chunk Z
+  | colspan="2"| Registry ID
-  |colspan="2"| Int
+  | colspan="2"| Identifier
-  | Chunk Z coordinate
+  |
-  |-
+  |- {{added}}
-  |colspan="2"| Record Count
+  | colspan="2"| Entry Count
-  |colspan="2"| VarInt
+  | colspan="2"| VarInt
-  | Number of elements in the following array, i.e. the number of blocks affected
+  | Number of entries in the following array.
-  |-
+  |- {{added}}
-  |rowspan="3"| Record
+  | rowspan="3"| Entries
-  | Horizontal Position
+  | Entry ID
-  |rowspan="3"| Array
+  | rowspan="3"| Array
-  | Unsigned Byte
+  | Identifier
-  | The 4 most significant bits (<code>0xF0</code>) encode the X coordinate, relative to the chunk. The 4 least significant bits (<code>0x0F</code>) encode the Z coordinate, relative to the chunk.
+  |
-  |-
+  |- {{added}}
-  | Y Coordinate
+  | Has Data
-  | Unsigned Byte
+  | Boolean
-  | Y coordinate of the block
+  | Whether the entry has any data following.
-  |-
+  |- {{added}}
-  | Block ID
+  | Data
-  | VarInt
+  | NBT Tag
-  | The new block state ID for the block as given in the [[#global palette|global palette]].  {{change|(When reading data: <code>type {{=}} id >> 4</code>, <code>meta {{=}} id & 15</code>, when writing data: <code>id {{=}} type << 4 {{!}} (meta & 15)</code>)|See that section for more information.}}
+  | Entry data. Only present if Has Data is true.
   |}
-To decode the position into a world position:
+==== Store Cookie (configuration) ====
-<syntaxhighlight lang="java">
+Stores some arbitrary data on the client, which persists between server transfers. The Notchian client only accepts cookies of up to 5 kiB in size.
-worldX = (horizPos >> 4 & 15) + (chunkX * 16);
-worldY = vertPos;
-worldZ = (horizPos & 15) + (chunkZ * 16);
-</syntaxhighlight>
+{| class="wikitable" {{added}}
-==== Tab-Complete (clientbound) ====
-Used to respond to the client's previous tab complete request.
-{| class="wikitable"
   ! Packet ID
   ! State
   ! Bound To
-  !colspan="2"| Field Name
+  ! colspan="2"| Field Name
-  !colspan="2"|  Field Type
+  ! colspan="2"| Field Type
   ! Notes
   |-
-  |rowspan="7"| {{Change|0x0E|0x10}}
+  | rowspan="2"| 0x0A
-  |rowspan="7"| Play
+  | rowspan="2"| Configuration
-  |rowspan="7"| Client
+  | rowspan="2"| Client
-  |colspan="2" {{Added}}| Transaction Id
+  | colspan="2"| Key
-  |colspan="2" {{Added}}| VarInt
+  | colspan="2"| Identifier
-  |{{Added}}| This id should also be used in the tab completion response packet, or it will be ignored.
+  | The identifier of the cookie.
- |- {{Added}}
- |colspan="2"|  Start
- |colspan="2"|  VarInt
- | Start of the text to replace
- |- {{Added}}
- |colspan="2"|  Length
- |colspan="2"|  VarInt
- | Length of the text to replace
   |-
-  |colspan="2"|  Count
+  | colspan="2"| Payload
-  |colspan="2"|  VarInt
+  | colspan="2"| ByteArray(5120)
- | Number of elements in the following array
+  | The data of the cookie.
- |-
- |rowspan="3"| Matches
- | Match
- |rowspan="3"| Array
- | String (32767)
-  | One eligible {{change|command|value to insert}}, note that each command is sent separately instead of in a single string, hence the need for Count.  {{change||Note that for instance this doesn't include a leading <code>/</code> on commands.}}
- |-
- |{{Added}}| Has tooltip
- |{{Added}}| Boolean
- |{{Added}}| True if the following is present
- |-
- |{{Added}}| Tooltip
- |{{Added}}| Optional [[Chat]]
- |{{Added}}| Tooltip to display; only present if previous Boolean is true
   |}
-==== Declare Commands ====
+==== Transfer (configuration) ====
-Lists all of the commands on the server, and how they are parsed.
-This is a directed graph, with one root node.  Each redirect or child node must refer only to nodes that have already been declared.
+Notifies the client that it should transfer to the given server. Cookies previously stored are preserved between server transfers.
-{| class="wikitable"
+{| class="wikitable" {{added}}
   ! Packet ID
   ! State
   ! Bound To
-  ! Field Name
+  ! colspan="2"| Field Name
-  ! Field Type
+  ! colspan="2"| Field Type
   ! Notes
   |-
-  |rowspan="3"| 0x11
+  | rowspan="2"| 0x0B
-  |rowspan="3"| Play
+  | rowspan="2"| Configuration
-  |rowspan="3"| Client
+  | rowspan="2"| Client
-  | Count
+  | colspan="2"| Host
-  | VarInt
+  | colspan="2"| String
-  | Number of elements in the following array
+  | The hostname of IP of the server.
   |-
-  | Nodes
+  | colspan="2"| Port
- | Array of [[Command Data|Node]]
+  | colspan="2"| VarInt
- | An array of nodes
+  | The port of the server.
-  |-
- | Root index
- | VarInt
-  | Index of the <code>root</code> node in the previous array
   |}
-For more information on this packet, see the [[Command Data]] article.
+==== Clientbound Known Packs ====
+Informs the client of which data packs are present on the server.
-==== Plugin Message (clientbound) ====
+The client is expected to respond with its own [[#Serverbound_Known_Packs|Serverbown Known Packs]] packet.
+The Notchian server does not continue with Configuration until it receives a response.
-{{Main|Plugin channels}}
-Mods and plugins can use this to send their data. Minecraft itself uses a number of [[plugin channel]]s. These internal channels are prefixed with <code>MC|</code>.
+{| class="wikitable" {{added}}
-More documentation on this: [http://dinnerbone.com/blog/2012/01/13/minecraft-plugin-channels-messaging/ http://dinnerbone.com/blog/2012/01/13/minecraft-plugin-channels-messaging/]
-{| class="wikitable"
   ! Packet ID
   ! State
   ! Bound To
-  ! Field Name
+  ! colspan="2"| Field Name
-  ! Field Type
+  ! colspan="2"| Field Type
   ! Notes
   |-
-  |rowspan="2"| {{Change|0x18|0x19}}
+  | rowspan="4"| 0x0E
-  |rowspan="2"| Play
+  | rowspan="4"| Configuration
-  |rowspan="2"| Client
+  | rowspan="4"| Client
-  | Channel
+  | colspan="2"| Known Pack Count
-  | {{Change|String (20)|Identifier}}
+  | colspan="2"| VarInt
-  | Name of the [[plugin channel]] used to send the data
+  | The number of known packs in the following array.
   |-
-  | Data
+  | rowspan="3"| Known Packs
-  | Byte Array
+ | Namespace
-  | Any data, depending on the channel. <code><nowiki>MC|</nowiki></code> channels are documented [[plugin channel|here]].  The length of this array must be inferred from the packet length.
+  | rowspan="3"| Array
+  | String
+ |
+ |-
+  | ID
+ | String
+ |
+ |-
+ | Version
+ | String
+ |
   |}
+=== Serverbound ===
-==== Named Sound Effect ====
+==== Cookie Response (configuration) ====
-{{See also|#Sound Effect}}
-Used to play a sound effect on the client. Custom sounds may be added by resource packs.
+Response to a [[#Cookie_Request_(configuration)|Cookie Request (configuration)]] from the server. The Notchian server only accepts responses of up to 5 kiB in size.
-{| class="wikitable"
+{| class="wikitable" {{added}}
   ! Packet ID
   ! State
   ! Bound To
-  ! Field Name
+  ! colspan="2"| Field Name
-  ! Field Type
+  ! colspan="2"| Field Type
   ! Notes
   |-
-  |rowspan="7"| {{Change|0x19|0x1A}}
+  | rowspan="4"| 0x01
-  |rowspan="7"| Play
+  | rowspan="4"| Configuration
-  |rowspan="7"| Client
+  | rowspan="4"| Server
-  | Sound Name
+  | colspan="2"| Key
-  | {{Change|String (256)|Identifier}}
+  | colspan="2"| Identifier
-  | All sound effect names as of 1.13-pre8 can be seen [http://pokechu22.github.io/Burger/1.13.html#sounds here].
+  | The identifier of the cookie.
   |-
-  | Sound Category
+  | colspan="2"| Has Payload
-  | VarInt Enum
+  | colspan="2"| Boolean
-  | The category that this sound will be played from ([https://gist.github.com/konwboj/7c0c380d3923443e9d55 current categories])
+  | The payload is only present if the cookie exists on the client.
   |-
-  | Effect Position X
+  | colspan="2"| Payload Length
-  | Int
+  | colspan="2"| VarInt
-  | Effect X multiplied by 8 ([[Data types#Fixed-point numbers|fixed-point number]] with only 3 bits dedicated to the fractional part)
+  | Length of the following byte array.
   |-
-  | Effect Position Y
+  | colspan="2"| Payload
-  | Int
+  | colspan="2"| Optional Byte Array (5120)
- | Effect Y multiplied by 8 ([[Data types#Fixed-point numbers|fixed-point number]] with only 3 bits dedicated to the fractional part)
+  | The data of the cookie, if any.
-  |-
- | Effect Position Z
- | Int
- | Effect Z multiplied by 8 ([[Data types#Fixed-point numbers|fixed-point number]] with only 3 bits dedicated to the fractional part)
- |-
- | Volume
- | Float
- | 1 is 100%, can be more
- |-
- | Pitch
- | Float
- | Float between 0.5 and 2.0 by Notchian clients
   |}
-==== NBT Query Response ====
+==== Serverbound Known Packs ====
-Sent in response to [[#Query Block NBT|Query Block NBT]] or [[#Query Entity NBT|Query Entity NBT]].
+ID 0x07, same structure as Clientbound Known Packs. If the client specifies a pack in this packet, the server should omit its contained data from Registry Data.
-{| class="wikitable" {{Added}}
+== Play ==
- ! Packet ID
- ! State
- ! Bound To
- ! Field Name
- ! Field Type
- ! Notes
- |-
- |rowspan="2"| 0x1D
- |rowspan="2"| Play
- |rowspan="2"| Client
- | Transaction ID
- | VarInt
- | Can be compared to the one sent in the original query packet.
- |-
- | NBT
- | [[NBT|NBT Tag]]
- | The NBT of the block or entity.  May be a TAG_END (0) in which case no NBT is present.
- |}
-==== Chunk Data ====
+=== Clientbound ===
-{{Main|Chunk Format}}
-{{See also|#Unload Chunk}}
-The server only sends skylight information for chunk pillars in the {{Minecraft Wiki|Overworld}}, it's up to the client to know in which dimenison the player is currently located. You can also infer this information from the primary bitmask and the amount of uncompressed bytes sent.  This packet also sends all block entities in the chunk (though sending them is not required; it is still legal to send them with [[#Update Block Entity|Update Block Entity]] later).
+==== Cookie Request (play) ====
-{{Change||Indexes into the global palette are still used, but since the global palette has changed, behavior is different.}}
+Requests a cookie that was previously stored.
-{{Change||The Palette length field is no longer sent when using the global palette}}
-The bits per block value used to index in the global palette is {{change|13|14}}, which is determined by taking the base 2 logarithm of the highest state ID and then rounding up (or alternatively, simply checking how many bits are needed to represent the highest state ID).
+{| class="wikitable" {{added}}
-{| class="wikitable"
   ! Packet ID
   ! State
   ! Bound To
-  ! Field Name
+  ! colspan="2"| Field Name
-  ! Field Type
+  ! colspan="2"| Field Type
   ! Notes
   |-
-  |rowspan="9"| {{Change|0x20|0x22}}
+  | rowspan="1"| 0x16
-  |rowspan="9"| Play
+  | rowspan="1"| Play
-  |rowspan="9"| Client
+  | rowspan="1"| Client
-  | Chunk X
+  | colspan="2"| Key
- | Int
+  | colspan="2"| Identifier
-  | Chunk coordinate (block coordinate divided by 16, rounded down)
+  | The identifier of the cookie.
- |-
- | Chunk Z
- | Int
- | Chunk coordinate (block coordinate divided by 16, rounded down)
-  |-
- | Ground-Up Continuous
- | Boolean
- | See [[Chunk Format#Ground-up continuous|Chunk Format]]
- |-
- | Primary Bit Mask
- | VarInt
- | Bitmask with bits set to 1 for every 16×16×16 chunk section whose data is included in Data. The least significant bit represents the chunk section at the bottom of the chunk column (from y=0 to y=15).
- |-
- | Size
- | VarInt
- | Size of Data in bytes
- |-
- | Data
- | Byte array
- | See [[Chunk Format#Data structure|data structure]] in Chunk Format
- |-
- | Number of block entities
- | VarInt
- | Number of elements in the following array
- |-
- | Block entities
- | Array of [[NBT|NBT Tag]]
- | All block entities in the chunk.  Use the x, y, and z tags in the NBT to determine their positions.
   |}
-{{Warning2|The chunk data packet currently (for 1.13 snapshots) may allocate a data array slightly larger than necessary; see [https://bugs.mojang.com/browse/MC-131684 MC-131684].  As such, there may be extra data (all zeros) after the end of the buffer that is not used.}}
+==== Debug Sample ====
-===== Data structure =====
+{| class="wikitable" {{added}}
-The data section of the packet contains most of the useful data for the chunk.
-{| class="wikitable"
- |-
- ! Field Name
- ! Field Type
- ! Notes
- |-
- | Data
- | Array of [[Chunk Format#Chunk Section structure|Chunk Section]]
- | The number of elements is equal to the number of bits set in Primary Bit Mask. Sections are sent bottom-to-top, i.e. the first section, if sent, extends from Y=0 to Y=15.
- |-
- | Biomes
- | Optional {{Change|Byte|Int}} Array
- | Only sent if Ground-Up Continuous is true; 256 {{change|bytes|entries}} if present
- |}
-===== Direct palette =====
-This format is used for bits per block values greater than 9.  The number of bits used to represent a block are the base 2 logarithm of the number of block states, rounded up. For the current vanilla release, this is 13 bits per block.
-:The "palette" uses the following format:
-:{| class="wikitable"
- |-
- ! Field Name
- ! Field Type
- ! Notes
- |- {{Removed}}
- | Dummy Palette Length
- | VarInt
- | Should always be 0.  Only exists to mirror the format used elsewhere.
- |-
- |colspan="3"| ''no fields''
- |}
-If Minecraft Forge is installed and a sufficiently large number of blocks are added, the bits per block value for the global palette will be increased to compensate for the increased ID count.  This increase can go up to 16 bits per block (for a total of 4096 block IDs; when combined with the 16 damage values, there are 65536 total states).  You can get the number of blocks with the "Number of ids" field found in the [[Minecraft Forge Handshake#RegistryData|RegistryData packet in the Forge Handshake]].
-==== Spawn Particle ====
-Displays the named particle
-{| class="wikitable"
   ! Packet ID
   ! State
@@ Line 2,000: / Line 759: @@
   ! Notes
   |-
-  |rowspan="11"| {{Change|0x22|0x24}}
+  | rowspan="3"| 0x1B
-  |rowspan="11"| Play
+  | rowspan="3"| Play
-  |rowspan="11"| Client
+  | rowspan="3"| Client
-  | Particle ID
+  | Sample Length
-  | Int
+  | VarInt
-  | The particle ID listed in [[#Particle]].
+  | The length of the following array.
   |-
-  | Long Distance
+  | Sample
-  | Boolean
+  | Long Array
-  | If true, particle distance increases from 256 to 65536
+  | TODO: What is the structure of the data in this array?
   |-
-  | X
+  | Sample Type
-  | Float
+  | VarInt Enum
-  | X position of the particle
+  | The type of sample data. Currently always 0 (TICK_TIME).
- |-
- | Y
- | Float
- | Y position of the particle
- |-
- | Z
- | Float
- | Z position of the particle
- |-
- | Offset X
- | Float
- | This is added to the X position after being multiplied by random.nextGaussian()
- |-
- | Offset Y
- | Float
- | This is added to the Y position after being multiplied by random.nextGaussian()
- |-
- | Offset Z
- | Float
- | This is added to the Z position after being multiplied by random.nextGaussian()
- |-
- | Particle Data
- | Float
- | The data of each particle
- |-
- | Particle Count
- | Int
- | The number of particles to create
- |-
- | Data
- | {{Change|Array of VarInt|Varies}}
- | {{Change|Length depends on particle. "iconcrack" has length of 2, "blockcrack", "blockdust", and "fallingdust" have lengths of 1, the rest have 0.|The variable data listed in [[#Particle]]}}
   |}
-==== Map ====
+==== Login (play) ====
-Updates a rectangular area on a {{Minecraft Wiki|map}} item.
 {| class="wikitable"
@@ Line 2,056: / Line 781: @@
   ! State
   ! Bound To
-  !colspan="2"| Field Name
+  ! Field Name
-  !colspan="2"| Field Type
+  ! Field Type
   ! Notes
   |-
-  |rowspan="16"| {{Change|0x24|0x26}}
+  | rowspan="22"| 0x2B
-  |rowspan="16"| Play
+  | rowspan="22"| Play
-  |rowspan="16"| Client
+  | rowspan="22"| Client
-  |colspan="2"| Item Damage
+  | Entity ID
-  |colspan="2"| VarInt
+  | {{Type|Int}}
-  | The damage value (map ID) of the map being modified
+  | The player's Entity ID (EID).
   |-
-  |colspan="2"| Scale
+  | Is hardcore
- |colspan="2"| Byte
+  | {{Type|Boolean}}
-  | From 0 for a fully zoomed-in map (1 block per pixel) to 4 for a fully zoomed-out map (16 blocks per pixel)
+  |
- |-
- |colspan="2"| Tracking Position
- |colspan="2"| Boolean
-  | Specifies whether the icons are shown
- |-
- |colspan="2"| Icon Count
- |colspan="2"| VarInt
- | Number of elements in the following array
   |-
-  |rowspan="6"| Icon
+  | Dimension Count
-  | {{Change|Direction And Type|Type}}
+  | {{Type|VarInt}}
- |rowspan="6"| Array
+  | Size of the following array.
- | {{Change|Byte|VarInt enum}}
-  | {{Change|0xF0 {{=}} Type, 0x0F {{=}} Direction|Type (see below)}}
   |-
-  | X
+  | Dimension Names
-  | Byte
+  | {{Type|Array}} of {{Type|Identifier}}
-  |
+  | Identifiers for all dimensions on the server.
   |-
-  | Z
+  | Max Players
-  | Byte
+  | {{Type|VarInt}}
- |
+  | Was once used by the client to draw the player list, but now is ignored.
- |- {{Added}}
- | Direction
- | Byte
- | 0-15
- |- {{Added}}
-  | Has Display Name
- | Boolean
- |
- |- {{Added}}
- | Display Name
- | Optional [[Chat]]
- | Only present if previous Boolean is true
- |-
- |colspan="2"| Columns
- |colspan="2"| Byte
- | Number of columns updated
   |-
-  |colspan="2"| Rows
+  | View Distance
-  |colspan="2"| Optional Byte
+  | {{Type|VarInt}}
-  | Only if Columns is more than 0; number of rows updated
+  | Render distance (2-32).
   |-
-  |colspan="2"| X
+  | Simulation Distance
-  |colspan="2"| Optional Byte
+  | {{Type|VarInt}}
-  | Only if Columns is more than 0; x offset of the westernmost column
+  | The distance that the client will process specific things, such as entities.
   |-
-  |colspan="2"| Z
+  | Reduced Debug Info
-  |colspan="2"| Optional Byte
+  | {{Type|Boolean}}
-  | Only if Columns is more than 0; z offset of the northernmost row
+  | If true, a Notchian client shows reduced information on the {{Minecraft Wiki|debug screen}}.  For servers in development, this should almost always be false.
   |-
-  |colspan="2"| Length
+  | Enable respawn screen
-  |colspan="2"| Optional VarInt
+  | {{Type|Boolean}}
-  | Only if Columns is more than 0; length of the following array
+  | Set to false when the doImmediateRespawn gamerule is true.
   |-
-  |colspan="2"| Data
+  | Do limited crafting
-  |colspan="2"| Optional Array of Unsigned Byte
+  | {{Type|Boolean}}
- | Only if Columns is more than 0; see {{Minecraft Wiki|Map item format}}
+  | Whether players can only craft recipes they have already unlocked. Currently unused by the client.
-  |}
-For icons, a direction of 0 is a vertical icon and increments by 22.5&deg; (360/16).
-Types are based off of rows and columns in <code>map_icons.png</code>:
-{| class="wikitable"
   |-
-  ! Icon type
+  | Dimension Type
-  ! Result
+ | {{change|Identifier|VarInt}}
+  | The ID of the type of dimension in the <code>minecraft:dimension_type</code> registry, defined by the Registry Data packet.
   |-
-  | 0
+  | Dimension Name
-  | White arrow (players)
+  | {{Type|Identifier}}
+ | Name of the dimension being spawned into.
   |-
-  | 1
+  | Hashed seed
-  | Green arrow (item frames)
+  | {{Type|Long}}
+ | First 8 bytes of the SHA-256 hash of the world's seed. Used client side for biome noise
   |-
-  | 2
+  | Game mode
-  | Red arrow
+ | {{Type|Unsigned Byte}}
+  | 0: Survival, 1: Creative, 2: Adventure, 3: Spectator.
   |-
-  | 3
+  | Previous Game mode
-  | Blue arrow
+ | {{Type|Byte}}
+  | -1: Undefined (null), 0: Survival, 1: Creative, 2: Adventure, 3: Spectator. The previous game mode. Vanilla client uses this for the debug (F3 + N & F3 + F4) game mode switch. (More information needed)
   |-
-  | 4
+  | Is Debug
-  | White cross
+  | {{Type|Boolean}}
+ | True if the world is a {{Minecraft Wiki|debug mode}} world; debug mode worlds cannot be modified and have predefined blocks.
   |-
-  | 5
+  | Is Flat
-  | Red pointer
+  | {{Type|Boolean}}
+ | True if the world is a {{Minecraft Wiki|superflat}} world; flat worlds have different void fog and a horizon at y=0 instead of y=63.
   |-
-  | 6
+  | Has death location
-  | White circle (off-map players)
+  | {{Type|Boolean}}
+ | If true, then the next two fields are present.
   |-
-  | 7
+  | Death dimension name
-  | Small white circle (far-off-map players)
+  | {{Type|Optional}} {{Type|Identifier}}
+ | Name of the dimension the player died in.
   |-
-  | 8
+  | Death location
-  | Mansion
+  | {{Type|Optional}} {{Type|Position}}
+ | The location that the player died at.
   |-
-  | 9
+  | Portal cooldown
-  | Temple
+  | {{Type|VarInt}}
- |- {{Added}}
+  | The number of ticks until the player can use the portal again.
- | 10
- | White Banner
- |- {{Added}}
- | 11
- | Orange Banner
- |- {{Added}}
- | 12
- | Magenta Banner
- |- {{Added}}
- | 13
- | Light Blue Banner
- |- {{Added}}
- | 14
- | Yellow Banner
- |- {{Added}}
-  | 15
- | Lime Banner
- |- {{Added}}
- | 16
- | Pink Banner
- |- {{Added}}
- | 17
- | Gray Banner
- |- {{Added}}
- | 18
- | Light Gray Banner
- |- {{Added}}
- | 19
- | Cyan Banner
- |- {{Added}}
- | 20
- | Purple Banner
- |- {{Added}}
- | 21
- | Blue Banner
- |- {{Added}}
- | 22
- | Brown Banner
- |- {{Added}}
- | 23
- | Green Banner
- |- {{Added}}
- | 24
- | Red Banner
- |- {{Added}}
- | 25
- | Black Banner
- |- {{Added}}
- | 26
- | Treasure marker
- |}
-==== Craft Recipe Response ====
-Response to the serverbound packet ([[#Craft Recipe Request|Craft Recipe Request]]), with the same recipe ID.  Appears to be used to notify the UI.
-{| class="wikitable"
- ! Packet ID
- ! State
- ! Bound To
- ! Field Name
- ! Field Type
- ! Notes
   |-
-  |rowspan="2"| {{Change|0x2B|0x2D}}
+  | Enforces Secure Chat
- |rowspan="2"| Play
+ | {{Type|Boolean}}
- |rowspan="2"| Client
- | Window ID
- | Byte
   |
- |-
- | Recipe
- | {{Change|VarInt|Identifer}}
- | A recipe ID
   |}
-==== Face Player ====
+==== Respawn ====
-Used to rotate the client player to face the given location or entity (for <code>/teleport [<targets>] <x> <y> <z> facing</code>).
 {| class="wikitable"
@@ Line 2,257: / Line 887: @@
   ! Notes
   |-
-  |rowspan="8"| 0x31
+  | rowspan="12"| 0x47
-  |rowspan="8"| Play
+  | rowspan="12"| Play
-  |rowspan="8"| Client
+  | rowspan="12"| Client
+ | Dimension Type
+ | {{change|Identifier|VarInt}}
+ | The ID of the type of dimension in the <code>minecraft:dimension_type</code> registry, defined by the [[Protocol#Registry_Data|Registry Data]] packet.
   |-
-  | Feet/eyes
+  | Dimension Name
-  | VarInt enum
+  | {{Type|Identifier}}
-  | Values are feet=0, eyes=1.  If set to eyes, aims using the head position; otherwise aims using the feet position.
+  | Name of the dimension being spawned into.
   |-
-  | Target x
+  | Hashed seed
-  | Double
+  | {{Type|Long}}
-  | x coordinate of the point to face towards
+  | First 8 bytes of the SHA-256 hash of the world's seed. Used client side for biome noise
   |-
-  | Target y
+  | Game mode
-  | Double
+  | {{Type|Unsigned Byte}}
-  | y coordinate of the point to face towards
+  | 0: Survival, 1: Creative, 2: Adventure, 3: Spectator.
   |-
-  | Target z
+  | Previous Game mode
-  | Double
+  | {{Type|Byte}}
-  | z coordinate of the point to face towards
+  | -1: Undefined (null), 0: Survival, 1: Creative, 2: Adventure, 3: Spectator. The previous game mode. Vanilla client uses this for the debug (F3 + N & F3 + F4) game mode switch. (More information needed)
   |-
-  | Is entity
+  | Is Debug
-  | Boolean
+  | {{Type|Boolean}}
-  | If true, additional information about an entity is provided.
+  | True if the world is a {{Minecraft Wiki|debug mode}} world; debug mode worlds cannot be modified and have predefined blocks.
   |-
-  | Entity ID
+  | Is Flat
-  | Optional VarInt
+  | {{Type|Boolean}}
-  | Only if is entity is true &mdash; the entity to face towards
+  | True if the world is a {{Minecraft Wiki|superflat}} world; flat worlds have different void fog and a horizon at y=0 instead of y=63.
   |-
-  | Entity feet/eyes
+  | Has death location
-  | Optional VarInt enum
+  | {{Type|Boolean}}
- | Whether to look at the entity's eyes or feet.  Same values and meanings as before, just for the entity's head/feet.
+  | If true, then the next two fields are present.
-  |}
-If the entity given by entity ID cannot be found, this packet should be treated as if is entity was false.
-==== Unlock Recipes ====
-{| class="wikitable"
- ! Packet ID
- ! State
- ! Bound To
- ! Field Name
- ! Field Type
- ! Notes
   |-
-  |rowspan="10"| {{Change|0x31|0x34}}
+  | Death dimension Name
-  |rowspan="10"| Play
+ | {{Type|Optional}} {{Type|Identifier}}
- |rowspan="10"| Client
+  | Name of the dimension the player died in.
   |-
-  | Action
+  | Death location
-  | VarInt
+  | {{Type|Optional}} {{Type|Position}}
-  | 0: init, 1: add, 2: remove
+  | The location that the player died at.
   |-
-  | Crafting Recipe Book Open
+  | Portal cooldown
-  | Boolean
+  | {{Type|VarInt}}
-  | If true, then the crafting recipe book will be open when the player opens its inventory.
+  | The number of ticks until the player can use the portal again.
   |-
-  | Crafting Recipe Book Filter Active
+  | Data kept
- | Boolean
+  | {{Type|Byte}}
- | If true, then the filtering option is active when the players opens its inventory.
+  | Bit mask. 0x01: Keep attributes, 0x02: Keep metadata. Tells which data should be kept on the client side once the player has respawned.
- |-
+In the Notchian implementation, this is context dependent:
-  |{{Added}}| Smelting Recipe Book Open
+* normal respawns (after death) keep no data;
-  | Boolean
+* exiting the end poem/credits keeps the attributes;
- | If true, then the smelting recipe book will be open when the player opens its inventory.
+* other dimension changes (portals or teleports) keep all data.
- |-
- |{{Added}}| Smelting Recipe Book Filter Active
- | Boolean
- | If true, then the filtering option is active when the players opens its inventory.
- |-
- | Array size 1
- | VarInt
- | Number of elements in the following array
- |-
- | Recipe IDs
- | Array of {{Change|VarInt|Identifier}}
- |
- |-
- | Array size 2
- | Optional VarInt
- | Number of elements in the following array, only present if mode is 0 (init)
- |-
- | Recipe IDs
- | Optional Array of {{Change|VarInt|Identifier}}, only present if mode is 0 (init)
- |
   |}
-Action:
-* 0 (init) = All the recipes in the list 2 will added to the recipe book. All the recipes in list 1 will be tagged as displayed, recipes that aren't tagged will be shown in the notification. VERIFY LIST ORDER?
-* 1 (add) = All the recipes in the list are added and their icon will be shown in the notification.
-* 2 (remove) = Remove all the recipes in the list. This allows them to re-displayed when they are readded.
-==== Scoreboard Objective ====
+==== Store Cookie (play) ====
-This is sent to the client when it should create a new {{Minecraft Wiki|scoreboard}} objective or remove one.
+Stores some arbitrary data on the client, which persists between server transfers. The Notchian client only accepts cookies of up to 5 kiB in size.
-{| class="wikitable"
+{| class="wikitable" {{added}}
   ! Packet ID
   ! State
   ! Bound To
-  ! Field Name
+  ! colspan="2"| Field Name
-  ! Field Type
+  ! colspan="2"| Field Type
   ! Notes
   |-
-  |rowspan="4"| {{Change|0x42|0x45}}
+  | rowspan="3"| 0x6B
-  |rowspan="4"| Play
+  | rowspan="3"| Play
-  |rowspan="4"| Client
+  | rowspan="3"| Client
-  | Objective Name
+  | colspan="2"| Key
- | String (16)
+  | colspan="2"| Identifier
-  | An unique name for the objective
+  | The identifier of the cookie.
- |-
- | Mode
- | Byte
-  | 0 to create the scoreboard. 1 to remove the scoreboard. 2 to update the display text.
   |-
-  | Objective Value
+  | colspan="2"| Payload Length
-  | Optional {{Change|String (32)|Chat}}
+  | colspan="2"| VarInt
-  | Only if mode is 0 or 2. The text to be displayed for the score
+  | Length of the following byte array.
   |-
-  | Type
+  | colspan="2"| Payload
-  | Optional {{change|String|VarInt Enum}}
+  | colspan="2"| Byte Array (5120)
-  | Only if mode is 0 or 2. {{change|“integer” or “hearts”|0 = "integer", 1 = "hearts"}}
+  | The data of the cookie.
   |}
-==== Teams ====
+==== Transfer (play) ====
-Creates and updates teams.
+Notifies the client that it should transfer to the given server. Cookies previously stored are preserved between server transfers.
-{| class="wikitable"
+{| class="wikitable" {{added}}
   ! Packet ID
   ! State
   ! Bound To
-  !colspan="2"| Field Name
+  ! colspan="2"| Field Name
-  ! Field Type
+  ! colspan="2"| Field Type
   ! Notes
   |-
-  |rowspan="27"| {{Change|0x44|0x47}}
+  | rowspan="2"| 0x73
-  |rowspan="27"| Play
+  | rowspan="2"| Play
-  |rowspan="27"| Client
+  | rowspan="2"| Client
-  |colspan="2"| Team Name
+  | colspan="2"| Host
- | String (16)
+  | colspan="2"| String
- | A unique name for the team. (Shared with scoreboard).
+  | The hostname of IP of the server.
- |-
-  |colspan="2"| Mode
- | Byte
- | Determines the layout of the remaining packet
- |-
- |rowspan="11"| 0: create team
- | Team Display Name
- | {{Change|String (32)|Chat}}
- |
- |- {{Removed}}
- | Team Prefix
- | String (16)
- | Displayed before the names of players that are part of this team
- |- {{Removed}}
- | Team Suffix
- | String (16)
- | Displayed after the names of players that are part of this team
- |-
- | Friendly Flags
- | Byte
- | Bit mask. 0x01: Allow friendly fire, 0x02: can see invisible players on same team
- |-
- | Name Tag Visibility
- | String Enum (32)
-  | <code>always</code>, <code>hideForOtherTeams</code>, <code>hideForOwnTeam</code>, <code>never</code>
- |-
- | Collision Rule
- | String Enum (32)
- | <code>always</code>, <code>pushOtherTeams</code>, <code>pushOwnTeam</code>, <code>never</code>
- |-
- | {{change|Color|Formatting}}
- | {{Change|Byte|VarInt enum}}
- | {{change|For colors, the same [[Chat]] colors (0-15). -1 indicates RESET/no color.|See below for more info.}}
- |- {{Added}}
- | Team Prefix
- | Chat
- | Displayed before the names of players that are part of this team
- |- {{Added}}
- | Team Suffix
- | Chat
- | Displayed after the names of players that are part of this team
- |-
- | Entity Count
- | VarInt
- | Number of elements in the following array
- |-
- | Entities
- | Array of String (40)
- | Identifiers for the entities in this team.  For players, this is their username; for other entities, it is their UUID.
- |-
- | 1: remove team
- | ''no fields''
- | ''no fields''
- |
- |-
- |rowspan="9"| 2: update team info
- | Team Display Name
- | {{Change|String (32)|Chat}}
- |
- |- {{Removed}}
- | Team Prefix
- | String (16)
- | Displayed before the names of entities that are part of this team
- |- {{Removed}}
- | Team Suffix
- | String (16)
- | Displayed after the names of entities that are part of this team
- |-
- | Friendly Flags
- | Byte
- | Bit mask. 0x01: Allow friendly fire, 0x02: can see invisible entities on same team
- |-
- | Name Tag Visibility
- | String Enum (32)
- | <code>always</code>, <code>hideForOtherTeams</code>, <code>hideForOwnTeam</code>, <code>never</code>
- |-
- | Collision Rule
- | String Enum (32)
- | <code>always</code>, <code>pushOtherTeams</code>, <code>pushOwnTeam</code>, <code>never</code>
- |-
- | {{change|Color|Formatting}}
- | {{Change|Byte|VarInt enum}}
- | {{change|For colors, the same [[Chat]] colors (0-15). -1 indicates RESET/no color.|See below for more info.}}
- |- {{Added}}
- | Team Prefix
- | Chat
- | Displayed before the names of players that are part of this team
- |- {{Added}}
- | Team Suffix
- | Chat
- | Displayed after the names of players that are part of this team
- |-
- |rowspan="2"| 3: add players to team
- | Entity Count
- | VarInt
- | Number of elements in the following array
- |-
- | Entities
- | Array of String (40)
- | Identifiers for the entities added.  For players, this is their username; for other entities, it is their UUID.
   |-
-  |rowspan="2"| 4: remove players from team
+  | colspan="2"| Port
-  | Entity Count
+  | colspan="2"| VarInt
- | VarInt
+  | The port of the server.
-  | Number of elements in the following array
- |-
- | Entities
- | Array of String (40)
- | Identifiers for the entities removed.  For players, this is their username; for other entities, it is their UUID.
   |}
-Formatting: The formatting of a team defines how the names of the team members are visualized. The following table lists all the possible formattings.
+==== Update Attributes ====
-{| class="wikitable"
+Sets {{Minecraft Wiki|Attribute|attributes}} on the given entity.
- ! ID
- ! Formatting
- |-
- | 0-15
- | Color formatting, same values as [[Chat]] colors.
- |-
- | 16
- | Obfuscated
- |-
- | 17
- | Bold
- |-
- | 18
- | Strikethrough
- |-
- | 19
- | Underlined
- |-
- | 20
- | Italic
- |-
- | 21
- | Reset
- |}
-==== Stop Sound ====
 {| class="wikitable"
@@ Line 2,542: / Line 1,003: @@
   ! State
   ! Bound To
-  ! Field Name
+  ! colspan="2"| Field Name
-  ! Field Type
+  ! colspan="2"| Field Type
   ! Notes
   |-
-  |rowspan="7"| 0x4C
+  | rowspan="6"| 0x71
-  |rowspan="7"| Play
+  | rowspan="6"| Play
-  |rowspan="7"| Client
+  | rowspan="6"| Client
-  | Flags
+  | colspan="2"| Entity ID
-  | Byte
+  | colspan="2"| VarInt
-  | Controls which fields are present.
+  |
   |-
-  | Source
+  | colspan="2"| Number Of Properties
-  | Optional VarInt enum
+  | colspan="2"| VarInt
-  | Only if flags is 3 or 1 (bit mask 0x1).  See below.  If not present, then sounds from all sources are cleared.
+  | Number of elements in the following array.
   |-
-  | Sound
+  | rowspan="4"| Property
-  | Optional Identifier
+  | {{change|Key|Id}}
-  | Only if flags is 2 or 3 (bit mask 0x2).  A sound effect name, see [[#Named Sound Effect|Named Sound Effect]].  If not present, then all sounds are cleared.
+  | rowspan="4"| Array
-  |}
+  | {{change|Identifier|VarInt Enum}}
+  | See below.
-Categories:
-{| class="wikitable"
-  ! Name !! Value
   |-
-  | master || 0
+  | Value
+ | Double
+ | See below.
   |-
-  | music || 1
+  | Number Of Modifiers
+ | VarInt
+ | Number of elements in the following array.
   |-
-  | record || 2
+  | Modifiers
- |-
+  | Array of Modifier Data
- | weather || 3
+  | See {{Minecraft Wiki|Attribute#Modifiers}}. Modifier Data defined below.
- |-
-  | block || 4
-  |-
- | hostile || 5
- |-
- | neutral || 6
- |-
- | player || 7
- |-
- | ambient || 8
- |-
- | voice || 9
   |}
-==== Declare Recipes ====
+Known Key values (see also {{Minecraft Wiki|Attribute#Modifiers}}):
-{| class="wikitable"
- ! Packet ID
- ! State
- ! Bound To
- !colspan="2"| Field Name
- !colspan="2"| Field Type
- ! Notes
- |-
- |rowspan="4"| 0x54
- |rowspan="4"| Play
- |rowspan="4"| Client
- |colspan="2"| Num Recipes
- |colspan="2"| VarInt
- | Number of elements in the following array
- |-
- |rowspan="3"| Recipe
- | Recipe ID
- |rowspan="3"| Array
- | Identifier
- |
- |-
- | Type
- | String
- | The recipe type, see below
- |-
- | Data
- | Optional, varies
- | Additional data for the recipe.  For some types, there will be no data.
- |}
-Recipe types:
+These changed between 24w03b and 24w13a, TODO: Update this
 {| class="wikitable"
- ! Type
- ! Description
- ! Data
   |-
-  | <code>crafting_shapeless</code>
+  ! Id
-  | Shapeless crafting recipe.  All items in the ingredient list must be present, but in any order/slot.
+  ! Key
-  | As follows:
+  ! Default
-   {| class="wikitable"
+ ! Min
-    ! Name
+ ! Max
-    ! Type
+  ! Label
-    ! Description
-    |-
-    | Group
-    | String
-    | Used to group similar recipes together in the recipe book.  Tag is present in recipe JSON.
-    |-
-    | Ingredient count
-    | VarInt
-    | Number of elements in the following array
-    |-
-    | Ingredients
-    | Array of Ingredient
-    |
-    |-
-    | Result
-    | [[Slot]]
-    |
-    |}
   |-
-  | <code>crafting_shaped</code>
+  | 0
-  | Shaped crafting recipe.  All items must be present in the same pattern (which may be flipped horizontally or translated)
+  | generic.armor
-  | As follows:
+  | 0.0
-   {| class="wikitable"
+ | 0.0
-    ! Name
+ | 30.0
-    ! Type
+  | Armor.
-    ! Description
-    |-
-    | Width
-    | VarInt
-    |
-    |-
-    | Height
-    | VarInt
-    |
-    |-
-    | Group
-    | String
-    | Used to group similar recipes together in the recipe book.  Tag is present in recipe JSON.
-    |-
-    | Ingredients
-    | Array of Ingredient
-    | Length is width * height.  Indexed by x + (y * width).
-    |-
-    | Result
-    | [[Slot]]
-    |
-    |}
   |-
-  | <code>crafting_special_armordye</code>
+  | 1
-  | Recipe for dying leather armor
+  | generic.armor_toughness
-  | None
+  | 0.0
+ | 0.0
+ | 20.0
+ | Armor Toughness.
   |-
-  | <code>crafting_special_bookcloning</code>
+  | 2
-  | Recipe for copying contents of written books
+  | generic.attack_damage
-  | None
+  | 2.0
+ | 0.0
+ | 2048.0
+ | Attack Damage.
   |-
-  | <code>crafting_special_mapcloning</code>
+  | 3
-  | Recipe for copying maps
+  | generic.attack_knockback
-  | None
+  | 0.0
+ | 0.0
+ | 5.0
+ | Attack Knockback.
   |-
-  | <code>crafting_special_mapextending</code>
+  | 4
-  | Recipe for adding paper to maps
+  | generic.attack_speed
-  | None
+  | 4.0
+ | 0.0
+ | 1024.0
+ | Attack Speed.
+ |- {{added}}
+ | 5
+ | generic.block_interaction_range
+ | 4.5
+ | 0.0
+ | 64.0
+ | Block Interaction Range.
+ |- {{added}}
+ | 6
+ | generic.entity_interaction_range
+ | 3.0
+ | 0.0
+ | 64.0
+ | Entity Interaction Range.
   |-
-  | <code>crafting_special_firework_rocket</code>
+  | 7
-  | Recipe for making firework rockets
+  | generic.flying_speed
-  | None
+  | 0.4
+ | 0.0
+ | 1024.0
+ | Flying Speed.
   |-
-  | <code>crafting_special_firework_star</code>
+  | 8
-  | Recipe for making firework stars
+  | generic.follow_range
-  | None
+  | 32.0
+ | 0.0
+ | 2048.0
+ | Follow Range.
   |-
-  | <code>crafting_special_firework_star_fade</code>
+  | 9
-  | Recipe for making firework stars fade between multiple colors
+  | horse.jump_strength
-  | None
+  | 0.7
+ | 0.0
+ | 2.0
+ | Jump Strength.
   |-
-  | <code>crafting_special_repairitem</code>
+  | 10
-  | Recipe for repairing items via crafting
+  | generic.knockback_resistance
-  | None
+  | 0.0
+ | 0.0
+ | 1.0
+ | Knockback Resistance.
   |-
-  | <code>crafting_special_tippedarrow</code>
+  | 11
-  | Recipe for crafting tipped arrows
+  | generic.luck
-  | None
+  | 0.0
+ | -1024.0
+ | 1024.0
+ | Luck.
   |-
-  | <code>crafting_special_bannerduplicate</code>
+  | 12
-  | Recipe for copying banner patterns
+  | generic.max_absorption
-  | None
+  | 0.0
+ | 0.0
+ | 2048.0
+ | Max Absorption.
   |-
-  | <code>crafting_special_banneraddpattern</code>
+  | 13
-  | Recipe for adding patterns to banners
+  | generic.max_health
-  | None
+  | 20.0
+ | 1.0
+ | 1024.0
+ | Max Health.
   |-
-  | <code>crafting_special_shielddecoration</code>
+  | 14
-  | Recipe for applying a banner's pattern to a shield
+  | generic.movement_speed
-  | None
+  | 0.7
+ | 0.0
+ | 1024.0
+ | Movement Speed.
+ |- {{added}}
+ | 15
+ | generic.scale
+ | 1.0
+ | 0.0625
+ | 16.0
+ | Scale.
   |-
-  | <code>crafting_special_shulkerboxcoloring</code>
+  | 16
-  | Recipe for recoloring a shulker box
+  | zombie.spawn_reinforcements
-  | None
+  | 0.0
-  |-
+  | 0.0
-  | <code>smelting</code>
+  | 1.0
-  | Smelting recipe
+  | Spawn Reinforcements Chance.
-  | As follows:
+  |- {{added}}
-   {| class="wikitable"
+ | 17
-    ! Name
+ | generic.step_height
-    ! Type
+ | 0.6
-    ! Description
+ | 0.0
-    |-
+ | 10.0
-    | Group
+ | Step Height.
-    | String
-    | Used to group similar recipes together in the recipe book.
-    |-
-    | Ingredient
-    | Ingredient
-    |
-    |-
-    | Result
-    | [[Slot]]
-    |
-    |-
-    | Experience
-    | Float
-    |
-    |-
-    | Cooking time
-    | VarInt
-    |
-    |}
   |}
-Ingredient is defined as:
+''Modifier Data'' structure:
 {| class="wikitable"
- ! Name
- ! Type
- ! Description
   |-
- | Count
- | VarInt
- | Number of elements in the following array
- |-
- | Items
- | Array of [[Slot]]
- | Any item in this array may be used for the recipe.  The count of each item should be 1.
- |}
-==== Tags ====
-{| class="wikitable"
- ! Packet ID
- ! State
- ! Bound To
   ! Field Name
   ! Field Type
   ! Notes
   |-
-  |rowspan="3"| 0x55
+  | UUID
- |rowspan="3"| Play
+  | UUID
- |rowspan="3"| Client
- | Block Tags
- | (See below)
- | IDs are block IDs
- |-
- | Item Tags
- | (See below)
- | IDs are item IDs
- |-
- | Fluid Tags
- | (See below)
- | IDs are fluid IDs
- |}
-Tags look like:
-{| class="wikitable"
- !colspan="2"| Field Name
- !colspan="2"| Field Type
- ! Notes
- |-
- |colspan="2"| Length
- |colspan="2"| VarInt
- | Number of elements in the following array
- |-
- |rowspan="3"| Tags
- | Tag name
- |rowspan="3"| Array
-  | Identifier
   |
   |-
-  | Count
+  | Amount
-  | VarInt
+  | Double
-  | Number of elements in the following array
+  | May be positive or negative.
   |-
-  | Entries
+  | Operation
-  | Array of VarInt
+  | Byte
-  | Numeric ID of the block/item.
+  | See below.
- |}
-=== Serverbound ===
-==== Query Block NBT ====
-Used when <kbd>Shift</kbd>+<kbd>F3</kbd>+<kbd>I</kbd> is pressed while looking at a block.
-{| class="wikitable" {{Added}}
- ! Packet ID
- ! State
- ! Bound To
- ! Field Name
- ! Field Type
- ! Notes
- |-
- |rowspan="2"| 0x01
- |rowspan="2"| Play
- |rowspan="2"| Server
- | Transaction ID
- | VarInt
- | An incremental ID so that the client can verify that the response matches.
- |-
- | Location
- | Position
- | The location of the block to check.
- |}
-==== Tab-Complete (serverbound) ====
-Sent when the client needs to tab-complete a <code>minecraft:ask_server</code> suggestion type.
-{| class="wikitable"
- ! Packet ID
- ! State
- ! Bound To
- ! Field Name
- ! Field Type
- ! Notes
- |-
- |rowspan="5"| {{Change|0x01|0x05}}
- |rowspan="5"| Play
- |rowspan="5"| Server
- |{{Added}}| Transaction Id
- |{{Added}}| VarInt
- |{{Added}}| The id received in the tab completion request packet, must match or the client will ignore this packet.  Client generates this and increments it each time it sends another tab completion that doesn't get a response.
- |-
- | Text
- | String ({{change|32767|256}})
- | All text behind the cursor without the <code>/</code> (e.g. to the left of the cursor in left-to-right languages like English)
- |- {{Removed}}
- | Assume Command
- | Boolean
- | If true, the server will parse Text as a command even if it doesn't start with a <code>/</code>. Used in the command block GUI.
- |- {{Removed}}
- | Has Position
- | Boolean
- |
- |- {{Removed}}
- | Looked At Block
- | Optional Position
- | The position of the block being looked at. Only sent if Has Position is true.
   |}
-==== Plugin Message (serverbound) ====
+The operation controls how the base value of the modifier is changed.
-{{Main|Plugin channels}}
-Mods and plugins can use this to send their data. Minecraft itself uses a number of [[plugin channel]]s. These internal channels are prefixed with <code>MC|</code>.
+* 0: Add/subtract amount
+* 1: Add/subtract amount percent of the current value
+* 2: Multiply by amount percent
-More documentation on this: [http://dinnerbone.com/blog/2012/01/13/minecraft-plugin-channels-messaging/ http://dinnerbone.com/blog/2012/01/13/minecraft-plugin-channels-messaging/]
+All of the 0's are applied first, and then the 1's, and then the 2's.
-Note that the length of Data is known only from the packet length, since the packet has no length field of any kind.
+==== Entity Effect ====
 {| class="wikitable"
@@ Line 2,911: / Line 1,216: @@
   ! Notes
   |-
-  |rowspan="2"| 0x0A
+  | rowspan="7"| 0x72
-  |rowspan="2"| Play
+  | rowspan="7"| Play
-  |rowspan="2"| Server
+  | rowspan="7"| Client
- | Channel
- | {{Change|String (20)|Identifier}}
- | Name of the [[plugin channel]] used to send the data
- |-
- | Data
- | Byte Array
- | Any data, depending on the channel. <code><nowiki>MC|</nowiki></code> channels are documented [[plugin channel|here]].  The length of this array must be inferred from the packet length.
- |}
-==== Edit Book ====
-{| class="wikitable" {{Added}}
- ! Packet ID
- ! State
- ! Bound To
- ! Field Name
- ! Field Type
- ! Notes
- |-
- |rowspan="2"| 0x0B
- |rowspan="2"| Play
- |rowspan="2"| Server
- | New book
- | [[Slot]]
- |
- |-
- | Is signing
- | Boolean
- | True if the player is signing the book; false if the player is saving a draft.
- |}
-When editing a draft, the [[NBT]] section of the Slot contains this:
-<pre>
-TAG_Compound(<nowiki>''</nowiki>): 1 entry
-{
-  TAG_List('pages'): 2 entries
-  {
-    TAG_String(0): 'Something on Page 1'
-    TAG_String(1): 'Something on Page 2'
-  }
-}
-</pre>
-When signing the book, it instead looks like this:
-<pre>
-TAG_Compound(<nowiki>''</nowiki>): 3 entires
-{
-  TAG_String('author'): 'Steve'
-  TAG_String('title'): 'A Wonderful Book'
-  TAG_List('pages'): 2 entries
-  {
-    TAG_String(0): 'Something on Page 1'
-    TAG_String(1): 'Something on Page 2'
-  }
-}
-</pre>
-==== Query Entity NBT ====
-Used when <kbd>Shift</kbd>+<kbd>F3</kbd>+<kbd>I</kbd> is pressed while looking at an entity.
-{| class="wikitable" {{Added}}
- ! Packet ID
- ! State
- ! Bound To
- ! Field Name
- ! Field Type
- ! Notes
- |-
- |rowspan="2"| 0x0C
- |rowspan="2"| Play
- |rowspan="2"| Server
- | Transaction ID
- | VarInt
- | An incremental ID so that the client can verify that the response matches.
- |-
   | Entity ID
   | VarInt
-  | The ID of the entity to query.
+  |
- |}
-==== Pick Item ====
-Used to swap out an empty space on the hotbar with the item in the given inventory slot.  The Notchain client uses this for pick block functionality (middle click) to retrieve items from the inventory.
-{| class="wikitable" {{Added}}
- ! Packet ID
- ! State
- ! Bound To
- ! Field Name
- ! Field Type
- ! Notes
   |-
-  |rowspan="1"| 0x15
+  | Effect ID
- |rowspan="1"| Play
- |rowspan="1"| Server
- | Slot to use
   | VarInt
-  | See [[Inventory]]
+  | See {{Minecraft Wiki|Status effect#Effect list|this table}}.
- |}
-The server will first search the player's hotbar for an empty slot, starting from the current slot and looping around to the slot before it.  If there are no empty slots, it will start a second search from the current slot and find the first slot that does not contain an enchanted item.  If there still are no slots that meet that criteria, then the server will use the currently selected slot.
-After finding the appropriate slot, the server swaps the items and then send 3 packets:
-* [[Protocol#Set slot|Set Slot]], with window ID set to -2 and slot set to the newly chosen slot and the item set to the item that is now in that slot (which was previously at the slot the client requested)
-* Set Slot, with window ID set to -2 and slot set to the slot the player requested, with the item that is now in that slot and was previously on the hotbar slot
-* [[Protocol#Held_Item_Change_.28clientbound.29|Held Item Change]], with the slot set to the newly chosen slot.
-==== Craft Recipe Request ====
-A replacement for [[Protocol#Prepare Crafting Grid|Prepare Crafting Grid]].  It appears to behave more or less the same, but the client does not specify where to move the items.
-This packet is sent when a player clicks a recipe in the crafting book that is craftable (white border).
-{| class="wikitable"
- ! Packet ID
- ! State
- ! Bound To
- ! Field Name
- ! Field Type
- ! Notes
   |-
-  |rowspan="3"| {{Change|0x12|0x16}}
+  | Amplifier
- |rowspan="3"| Play
- |rowspan="3"| Server
- | Window ID
   | Byte
-  |
+  | Notchian client displays effect level as Amplifier + 1.
- |-
- | Recipe
- | {{Change|VarInt|Identifier}}
- | A recipe ID
- |-
- | Make all
- | Boolean
- | Affects the amount of items processed; true if shift is down when clicked
- |}
-==== Recipe Book Data ====
-(previously known as Crafting Book Data)
-{| class="wikitable"
- ! Packet ID
- ! State
- ! Bound To
- !colspan="2"| Field Name
- ! Field Type
- ! Notes
   |-
-  |rowspan="7"| {{Change|0x17|0x1B}}
+  | Duration
- |rowspan="7"| Play
- |rowspan="7"| Server
- |colspan="2"| Type
   | VarInt
-  | Determines the format of the rest of the packet
+  | Duration in ticks. (-1 for infinite)
   |-
- ! Type
+  | Flags
- ! Field Name
+  | Byte
- !
+  | Bit field, see below.
- !
+  |- {{removed}}
-  |-
+  | Has Factor Data
-  | 0: Displayed Recipe
-  | Recipe ID
-  | {{Change|Int|Identifer}}
-  | A recipe ID
- |-
- |rowspan="4"| 1: Recipe Book States
- | Crafting Recipe Book Open
   | Boolean
-  | Whether the player has the crafting recipe book currently opened/active.
+  | Used in DARKNESS effect
- |-
+  |- {{removed}}
- | Crafting Recipe Filter Active
+  | Factor Codec
- | Boolean
+  | NBT Tag
- | Whether the player has the crafting recipe book filter option currently active.
+  | See below
- |- {{Added}}
- | Smelting Recipe Book Open
- | Boolean
- | Whether the player has the smelting recipe book currently opened/active.
-  |- {{Added}}
-  | Smelting Recipe Filter Active
-  | Boolean
-  | Whether the player has the smelting recipe book filter option currently active.
   |}
-The Recipe Book Status type is sent when one of the states changes.
+{{Need Info|What exact effect does the blend bit flag have on the client? What happens if it is used on effects besides DARKNESS?}}
+Within flags:
-==== Name Item ====
+* 0x01: Is ambient - was the effect spawned from a beacon?  All beacon-generated effects are ambient.  Ambient effects use a different icon in the HUD (blue border rather than gray).  If all effects on an entity are ambient, the [[Entity_metadata#Living Entity|"Is potion effect ambient" living metadata field]] should be set to true.  Usually should not be enabled.
+* 0x02: Show particles - should all particles from this effect be hidden?  Effects with particles hidden are not included in the calculation of the effect color, and are not rendered on the HUD (but are still rendered within the inventory).  Usually should be enabled.
+* 0x04: Show icon - should the icon be displayed on the client?  Usually should be enabled.
+* {{change||0x08: Blend - should the effect's hard-coded blending be applied?  Currently only used in the DARKNESS effect to apply extra void fog and adjust the gamma value for lighting.}}
-Sent as a player is renaming an item in an anvil (each keypress in the anvil UI sends a new {{Change|<code>MC{{!}}ItemName</code>|Name Item}} packet).  If the new name is empty, then the item loses its custom name (this is different from setting the custom name to the normal name of the item).  The item name may be no longer than 35 characters long, and if it is longer than that, then the rename is silently ignored.
+{{change|Factor Data|}}
+{| class="wikitable" {{removed}}
-{| class="wikitable" {{Added}}
+  !Name
-  ! Packet ID
+  !Type
- ! State
+  !style="width: 250px;" colspan="2"| Notes
- ! Bound To
- ! Field Name
-  ! Field Type
-  ! Notes
   |-
-  |rowspan="1"| 0x1C
+  | padding_duration
-  |rowspan="1"| Play
+  | TAG_INT
-  |rowspan="1"| Server
+  |
- | Item name
- | String (32767)
- | The new name of the item
- |}
-==== Select Trade ====
-When a player selects a specific trade offered by a villager NPC.
-{| class="wikitable" {{Added}}
- ! Packet ID
- ! State
- ! Bound To
- ! Field Name
- ! Field Type
- ! Notes
   |-
-  |rowspan="1"| 0x1E
+  | factor_start
- |rowspan="1"| Play
+  | TAG_FLOAT
- |rowspan="1"| Server
+  |
-  | Selected slot
-  | {{Change|Integer|VarInt}}
- | The selected slot int the players current (trading) inventory. (Was a full Integer for the plugin message)
- |}
-==== Set Beacon Effect ====
-Changes the effect of the current beacon.
-{| class="wikitable" {{Added}}
- ! Packet ID
- ! State
- ! Bound To
- ! Field Name
- ! Field Type
- ! Notes
   |-
-  |rowspan="2"| 0x20
+  | factor_target
- |rowspan="2"| Play
+  | TAG_FLOAT
- |rowspan="2"| Server
+  |
-  | Primary Effect
- | {{Change|Integer|VarInt}}
-  | A [http://minecraft.gamepedia.com/Data_values#Potions Potion ID]. (Was a full Integer for the plugin message)
   |-
-  | Secondary Effect
+  | factor_current
-  | {{Change|Integer|VarInt}}
+  | TAG_FLOAT
- | A [http://minecraft.gamepedia.com/Data_values#Potions Potion ID]. (Was a full Integer for the plugin message)
- |}
-==== Update Command Block ====
-{| class="wikitable" {{Added}}
- ! Packet ID
- ! State
- ! Bound To
- ! Field Name
- ! Field Type
- ! Notes
- |-
- |rowspan="11"| 0x22
- |rowspan="11"| Play
- |rowspan="11"| Server
- |- {{Removed}}
- | X || Int ||
- |- {{Removed}}
- | Y || Int ||
- |- {{Removed}}
- | Z || Int ||
- |-
- | Location
- | Position
   |
   |-
-  | Command
+  | effect_changed_timestamp
-  | String (32767)
+  | TAG_INT
- |
- |- {{Removed}}
- | Track output || Boolean || If false, the output of the previous command will not be stored within the command block.
   |-
-  | Mode || {{Change|String|VarInt}} enum || One of "SEQUENCE" {{change||(0)}}, "AUTO" {{change||(1)}}, and "REDSTONE" {{change||(2)}} <!-- remove quotes when merging into release article -->
+  | factor_previous_frame
-  |- {{Removed}}
+  | TAG_FLOAT
- | Is conditional || Boolean ||
- |- {{Removed}}
- | Automatic || Boolean ||
   |-
-  | Flags
+  | had_effect_last_tick
-  | Byte
+  | TAG_BOOLEAN
- | 0x01: Track Output (if false, the output of the previous command will not be stored within the command block); 0x02: Is conditional; 0x04: Automatic
   |}
-==== Update Command Block Minecart ====
+=== Serverbound ===
+==== Chat Command ====
-{| class="wikitable" {{Added}}
+{| class="wikitable"
   ! Packet ID
   ! State
   ! Bound To
-  ! Field Name
+  ! colspan="2"| Field Name
-  ! Field Type
+  ! colspan="2"| Field Type
   ! Notes
   |-
-  |rowspan="3"| 0x23
+  | rowspan="8"| 0x04
-  |rowspan="3"| Play
+  | rowspan="8"| Play
-  |rowspan="3"| Server
+  | rowspan="8"| Server
-  | Entity ID
+  | colspan="2"| Command
-  | {{Change|Int|VarInt}}
+ | colspan="2"| {{Type|String}} (256)
-  |
+ | colspan="2"| The command typed by the client.
-  |-
+ |- {{removed}}
-  | Command
+ | colspan="2"| Timestamp
-  | String
+ | colspan="2"| {{Type|Long}}
-  |
+ | colspan="2"| The timestamp that the command was executed.
-  |-
+ |- {{removed}}
-  | Track Output
+ | colspan="2"| Salt
-  | Boolean
+ | colspan="2"| {{Type|Long}}
-  | If false, the output of the previous command will not be stored within the command block.
+ | colspan="2"| The salt for the following argument signatures.
+  |- {{removed}}
+ | colspan="2"| Array length
+ | colspan="2"| {{Type|VarInt}}
+  | colspan="2"| Number of entries in the following array. The maximum length in Notchian server is 8.
+  |- {{removed}}
+ | rowspan="2"| Array of argument signatures
+  | Argument name
+ | rowspan="2"| {{Type|Array}} (8)
+  | {{Type|String}} (16)
+  | The name of the argument that is signed by the following signature.
+  |- {{removed}}
+  | Signature
+  | {{Type|Byte Array}} (256)
+  | The signature that verifies the argument. Always 256 bytes and is not length-prefixed.
+ |- {{removed}}
+ | colspan="2"| Message Count
+ | colspan="2"| {{Type|VarInt}}
+ | colspan="2"|
+ |- {{removed}}
+ | colspan="2"| Acknowledged
+ | colspan="2"| {{Type|Fixed BitSet}} (20)
+ | colspan="2"|
   |}
-==== Update Structure Block ====
-{| class="wikitable" {{Added}}
+==== Signed Chat Command ====
+{| class="wikitable" {{added}}
   ! Packet ID
   ! State
   ! Bound To
-  ! Field Name
+  ! colspan="2"| Field Name
-  ! Field Type
+  ! colspan="2"| Field Type
   ! Notes
   |-
-  |rowspan="22"| 0x25
+  | rowspan="8"| 0x05
-  |rowspan="22"| Play
+  | rowspan="8"| Play
-  |rowspan="22"| Server
+  | rowspan="8"| Server
-  | {{Removed}}| X
+  | colspan="2"| Command
-  | {{Removed}}| Int
+  | colspan="2"| String(256)
- | {{Removed}}| Tile entity location
+  | The command typed by the client.
-  |- {{Removed}}
- | Y || Int || Tile entity location
- |- {{Removed}}
- | Z || Int || Tile entity location
   |-
-  | Location
+  | colspan="2"| Timestamp
-  | Position
+  | colspan="2"| Long
-  | Block entity location
+  | The timestamp that the command was executed. Milliseconds since the Unix epoch.
   |-
-  | Action
+  | colspan="2"| Salt
-  | {{Change|Byte|VarInt enum}}
+  | colspan="2"| Long
-  | An additional action to perform beyond simply saving the given data; see below
+  | The salt for the following argument signatures.
   |-
-  | Mode
+  | colspan="2"| Argument Signature Count
-  | {{Change|String|VarInt}} enum
+  | colspan="2"| VarInt
-  | One of "SAVE" {{change||(0)}}, "LOAD" {{change||(1)}}, "CORNER" {{change||(2)}}, "DATA" {{change||(3)}}. <!-- when merging remove quotes -->
+  | Number of elements in the following array. The maximum length in Notchian server is 8.
   |-
+ | rowspan="2"| Argument Signatures
   | Name
-  | String
+  | rowspan="2"| Array
- |
+  | String(16)
-  |-
+  | The name of the argument that is signed by the following signature.
- | Offset X || {{Change|Int|Byte}}
- | Between -32 and 32
- |-
- | Offset Y || {{Change|Int|Byte}}
- | Between -32 and 32
- |-
- | Offset Z || {{Change|Int|Byte}}
- | Between -32 and 32
- |-
- | Size X || {{Change|Int|Byte}}
-  | Between 0 and 32
   |-
-  | Size Y || {{Change|Int|Byte}}
+  | Signature
-  | Between 0 and 32
+ | ByteArray(256)
+  | The signature that verifies the argument. Always 256 bytes and is not length-prefixed.
   |-
-  | Size Z || {{Change|Int|Byte}}
+  | colspan="2"| Seen Messages Offset
- | Between 0 and 32
+  | colspan="2"| VarInt
- |-
- | Mirror
- | {{Change|String|VarInt}} enum
- | One of "NONE" {{change||(0)}}, "LEFT_RIGHT" {{change||(1)}}, "FRONT_BACK" {{change||(2)}}. <!-- remove quotes when merging -->
- |-
- | Rotation
- | {{Change|String|VarInt}} enum
-  | One of "NONE" {{change||(0)}}, "CLOCKWISE_90" {{change||(1)}}, "CLOCKWISE_180" {{change||(2)}}, "COUNTERCLOCKWISE_90" {{change||(3)}}. <!-- remove quotes when merging -->
- |-
- | Metadata
- | String
- |
- |- {{Removed}}
- | Ignore entities
- | Boolean
   |
- |- {{Removed}}
- | Show air
- | Boolean
- |
- |- {{Removed}}
- | Show bounding box
- | Boolean
- |
- |-
- | Integrity
- | Float
- | Between 0 and 1
   |-
-  |Seed
+  | colspan="2"| Seen Messages Acknowledged
-  |VarLong
+  | colspan="2"| Fixed BitSet(20)
   |
- |-
- | Flags
- | Byte
- | 0x01: Ignore entities; 0x02: Show air; 0x04: Show bounding box
   |}
-Possible actions:
+==== Cookie Response (play) ====
-* {{change|1|0}} - Update data
-* {{change|2|1}} - Save the structure
-* {{change|3|2}} - Load the structure
-* {{change|4|3}} - Detect size
-{{change|All other values are ignored.  }}The Notchian client uses {{change|1|update data}} to indicate no special action should be taken (i.e. the done button).
-== Handshaking ==
+Response to a [[#Cookie_Request_(play)|Cookie Request (play)]] from the server. The Notchian server only accepts responses of up to 5 kiB in size.
-=== Clientbound ===
+{| class="wikitable" {{added}}
-There are no clientbound packets in the Handshaking state, since the protocol immediately switches to a different state after the client sends the first packet.
-=== Serverbound ===
-==== Handshake ====
-This causes the server to switch into the target state.
-{| class="wikitable"
   ! Packet ID
   ! State
   ! Bound To
-  ! Field Name
+  ! colspan="2"| Field Name
-  ! Field Type
+  ! colspan="2"| Field Type
   ! Notes
   |-
-  |rowspan="4"| 0x00
+  | rowspan="4"| 0x11
-  |rowspan="4"| Handshaking
+  | rowspan="4"| Play
-  |rowspan="4"| Server
+  | rowspan="4"| Server
-  | Protocol Version
+  | colspan="2"| Key
-  | VarInt
+  | colspan="2"| Identifier
-  | See [[protocol version numbers]] (currently {{change|340|393}})
+  | The identifier of the cookie.
   |-
-  | Server Address
+  | colspan="2"| Has Payload
- | String
+  | colspan="2"| Boolean
-  | Hostname or IP, e.g. localhost or 127.0.0.1, that was used to connect.  The Notchian server does not use this information.
+  | The payload is only present if the cookie exists on the client.
- |-
-  | Server Port
- | Unsigned Short
- | Default is 25565.  The Notchian server does not use this information.
   |-
-  | Next State
+  | colspan="2"| Payload Length
- | VarInt Enum
+  | colspan="2"| Optional VarInt
- | 1 for [[#Status|status]], 2 for [[#Login|login]]
+  | Length of the following byte array.
- |}
-== Status ==
-=== Clientbound ===
-No changes so far.
-=== Serverbound ===
-No changes so far.
-== Login ==
-=== Clientbound ===
-==== Login Plugin Request ====
-Used to implement a custom handshaking flow together with [[#Login_Plugin_Response | Login Plugin Response]].
-Unlike plugin messages in "play" mode, these messages follow a lock-step request/response scheme, where the client is expected to respond to a request indicating whether it understood. The vanilla client always responds that it hasn't understood, and sends an empty payload.
-{| class="wikitable"
- ! Packet ID
- ! State
- ! Bound To
- ! Field Name
- ! Field Type
- ! Notes
- |-
-  |rowspan="3"| 0x04
- |rowspan="3"| Play
- |rowspan="3"| Client
- | Message ID
- | VarInt
-  | Generated by the server - should be unique to the connection.
- |-
- | Channel
- | Identifier
- | Name of the [[plugin channel]] used to send the data
   |-
-  | Data
+  | colspan="2"| Payload
-  | Byte Array
+  | colspan="2"| Optional Byte Array (5120)
-  | Any data, depending on the channel. <code><nowiki>MC|</nowiki></code> channels are documented [[plugin channel|here]].  The length of this array must be inferred from the packet length.
+  | The data of the cookie, if any.
   |}
-=== Serverbound ===
+==== Debug Sample Subscription ====
-==== Login Plugin Response ====
+{| class="wikitable" {{added}}
-{| class="wikitable"
   ! Packet ID
   ! State
@@ Line 3,434: / Line 1,430: @@
   ! Notes
   |-
-  |rowspan="3"| 0x02
+  | 0x13
-  |rowspan="3"| Play
+  | Play
-  |rowspan="3"| Client
+  | Server
-  | Message ID
+  | Sample Type
-  | VarInt
+  | VarInt Enum
-  | Should match ID from server.
+  | The type of debug sample to subscribe to. Currently always 0 (TICK_TIME).
- |-
- | Successful
- | Boolean
- | <code>true</code> if the client understands the request, <code>false</code> otherwise. When <code>false</code>, no payload follows.
- |-
- | Data
- | Optional Byte Array
- | Any data, depending on the channel. <code><nowiki>MC|</nowiki></code> channels are documented [[plugin channel|here]].  The length of this array must be inferred from the packet length.
   |}
 [[Category:Minecraft Modern]]

Difference between revisions of "Pre-release protocol"

Revision as of 19:57, 25 April 2024

Contents

Contents

Data types

Packets

New/modified data types

Entity Metadata

Living Entity

Wolf

Armadillo

Block Actions

Inventories

Plugin Channels

Handshake

Serverbound

Handshake

Status

Clientbound

Serverbound

Login

Clientbound

Encryption Request

Cookie Request (login)

Serverbound

Cookie Response (login)

Configuration

Clientbound

Cookie Request (configuration)

Reset Chat

Registry Data

Store Cookie (configuration)

Transfer (configuration)

Clientbound Known Packs

Serverbound

Cookie Response (configuration)

Serverbound Known Packs

Play

Clientbound

Cookie Request (play)

Debug Sample

Login (play)

Respawn

Store Cookie (play)

Transfer (play)

Update Attributes

Entity Effect

Serverbound

Chat Command

Signed Chat Command

Cookie Response (play)

Debug Sample Subscription

Navigation menu

Search