Difference between revisions of "Pre-release protocol"

From wiki.vg
Jump to navigation Jump to search
(→‎Entity Metadata: Merge changes from stable docs to incorporate new metadata type templates. Fix my earlier mistake on Pose in the process.)
 
Line 1: Line 1:
This page documents the changes from the [[Protocol|last stable Minecraft release]] (currently [[Protocol version numbers|1.8.8, protocol 47]]) to the current pre-release (currently [[Protocol version numbers|15w31c, protocol 51]]). 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|24w03b, protocol {{Snapshot PVN|1073741996}}]]). 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.
 
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.
  
== Protocol history ==
+
== Contents ==
  
None so far.
+
<div style="float:right;">__TOC__</div>
  
== New/modified data types ==
+
=== Data types ===
 
 
None so far.
 
 
 
== Handshaking ==
 
 
 
=== Clientbound ===
 
  
 
No changes so far.
 
No changes so far.
  
=== Serverbound ===
+
=== Packets ===
 
 
==== Handshake ====
 
 
 
This causes the server to switch into the target state.
 
  
 
{| class="wikitable"
 
{| class="wikitable"
  ! Packet ID
+
  ! ID
  ! State
+
  ! Packet name
  ! Bound To
+
  !colspan="2"| Documentation
  ! Field Name
+
  |-
  ! Field Type
+
  !colspan="4"| Handshake serverbound
  ! Notes
+
  {{PacketList|0x00|Handshake}}
 
  |-
 
  |-
  |rowspan="4"| 0x00
+
  !colspan="4"| Login clientbound
  |rowspan="4"| Handshaking
+
  {{PacketList|0x05|Cookie Request (login)|rel=added}}
|rowspan="4"| Server
 
| Protocol Version
 
| VarInt
 
| See [[protocol version numbers]] (currently {{Change|47|50}})
 
 
  |-
 
  |-
  | Server Address
+
  !colspan="4"| Login serverbound
| String
+
  {{PacketList|0x04|Cookie Response (login)|rel=added}}
| hostname or IP, e.g. localhost or 127.0.0.1<!-- does this support IPv6? -->
 
|-
 
  | Server Port
 
| Unsigned Short
 
| default is 25565
 
 
  |-
 
  |-
  | Next State
+
  !colspan="4"| Configuration clientbound
  | VarInt
+
  {{PacketList|0x00|Cookie Request (configuration)|rel=added}}
  | 1 for [[#Status|status]], 2 for [[#Login|login]]
+
  {{PacketList|{{change|0x00|0x01}}|Clientbound Plugin Message (configuration)|pre=unchanged}}
  |}
+
  {{PacketList|{{change|0x01|0x02}}|Disconnect (configuration)|pre=unchanged}}
 
+
{{PacketList|{{change|0x02|0x03}}|Finish Configuration|pre=unchanged}}
== Play ==
+
{{PacketList|{{change|0x03|0x04}}|Clientbound Keep Alive (configuration)|pre=unchanged}}
 
+
{{PacketList|{{change|0x04|0x05}}|Ping (configuration)|pre=unchanged}}
=== Clientbound ===
+
{{PacketList|{{change|0x05|0x06}}|Registry Data|pre=unchanged}}
 
+
{{PacketList|{{change|0x06|0x07}}|Remove Resource Pack (configuration)|pre=unchanged}}
==== Entity Equipment ====
+
{{PacketList|{{change|0x07|0x08}}|Add Resource Pack (configuration)|pre=unchanged}}
 +
{{PacketList|0x09|Store Cookie (configuration)|rel=added}}
 +
{{PacketList|0x0A|Transfer (configuration)|rel=added}}
 +
{{PacketList|{{change|0x08|0x0B}}|Feature Flags|pre=unchanged}}
 +
{{PacketList|{{change|0x09|0x0C}}|Update Tags (configuration)|pre=unchanged}}
  
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
 
  |-
 
  |-
  |rowspan="3"| 0x04
+
  !colspan="4"| Configuration serverbound
  |rowspan="3"| Play
+
  {{PacketList|0x01|Cookie Response (configuration)|rel=added}}
  |rowspan="3"| Client
+
{{PacketList|{{change|0x01|0x02}}|Serverbound Plugin Message (configuration)|pre=unchanged}}
  | Entity ID
+
  {{PacketList|{{change|0x02|0x03}}|Finish Configuration|pre=unchanged}}
  | VarInt
+
  {{PacketList|{{change|0x03|0x04}}|Serverbound Keep Alive (configuration)|pre=unchanged}}
  | Entity's EID
+
  {{PacketList|{{change|0x04|0x05}}|Pong (configuration)|pre=unchanged}}
 +
  {{PacketList|{{change|0x05|0x06}}|Resource Pack Response (configuration)|pre=unchanged}}
 
  |-
 
  |-
  | Slot
+
  !colspan="4"| Play clientbound
  | {{Change|Short|VarInt}}
+
{{PacketList|0x16|Cookie Request (Play)|rel=added}}
  | Equipment slot. 0: main hand, {{Change||1: off hand}}, {{Change|1–4|2–5}}: armor slot (2: boots, 3: leggings, 4: chestplate, 5: helmet)
+
{{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|{{change|0x1A|0x1B}}|Delete Message|pre=unchanged}}
 +
{{PacketList|{{change|0x1B|0x1C}}|Disconnect (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x1C|0x1D}}|Disguised Chat Message|pre=unchanged}}
 +
{{PacketList|{{change|0x1D|0x1E}}|Entity Event|pre=unchanged}}
 +
{{PacketList|{{change|0x1E|0x1F}}|Explosion|pre=unchanged}}
 +
{{PacketList|{{change|0x1F|0x20}}|Unload Chunk|pre=unchanged}}
 +
{{PacketList|{{change|0x20|0x21}}|Game Event|pre=unchanged}}
 +
{{PacketList|{{change|0x21|0x22}}|Open Horse Screen|pre=unchanged}}
 +
{{PacketList|{{change|0x22|0x23}}|Hurt Animation|pre=unchanged}}
 +
{{PacketList|{{change|0x23|0x24}}|Initialize World Border|pre=unchanged}}
 +
{{PacketList|{{change|0x24|0x25}}|Clientbound Keep Alive (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x25|0x26}}|Chunk Data and Update Light|pre=unchanged}}
 +
{{PacketList|{{change|0x26|0x27}}|World Event|pre=unchanged}}
 +
{{PacketList|{{change|0x27|0x28}}|Particle|pre=unchanged}}
 +
{{PacketList|{{change|0x28|0x29}}|Update Light|pre=unchanged}}
 +
{{PacketList|{{change|0x29|0x2A}}|Login (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x2A|0x2B}}|Map Data|pre=unchanged}}
 +
{{PacketList|{{change|0x2B|0x2C}}|Merchant Offers|pre=unchanged}}
 +
{{PacketList|{{change|0x2C|0x2D}}|Update Entity Position|pre=unchanged}}
 +
{{PacketList|{{change|0x2D|0x2E}}|Update Entity Position and Rotation|pre=unchanged}}
 +
{{PacketList|{{change|0x2E|0x2F}}|Update Entity Rotation|pre=unchanged}}
 +
{{PacketList|{{change|0x2F|0x30}}|Move Vehicle|pre=unchanged}}
 +
{{PacketList|{{change|0x30|0x31}}|Open Book|pre=unchanged}}
 +
{{PacketList|{{change|0x31|0x32}}|Open Screen|pre=unchanged}}
 +
{{PacketList|{{change|0x32|0x33}}|Open Sign Editor|pre=unchanged}}
 +
{{PacketList|{{change|0x33|0x34}}|Ping (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x34|0x35}}|Ping Response (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x35|0x36}}|Place Ghost Recipe|pre=unchanged}}
 +
{{PacketList|{{change|0x36|0x37}}|Player Abilities|pre=unchanged}}
 +
{{PacketList|{{change|0x37|0x38}}|Player Chat Message|pre=unchanged}}
 +
{{PacketList|{{change|0x38|0x39}}|End Combat|pre=unchanged}}
 +
{{PacketList|{{change|0x39|0x3A}}|Enter Combat|pre=unchanged}}
 +
{{PacketList|{{change|0x3A|0x3B}}|Combat Death|pre=unchanged}}
 +
{{PacketList|{{change|0x3B|0x3C}}|Player Info Remove|pre=unchanged}}
 +
{{PacketList|{{change|0x3C|0x3D}}|Player Info Update|pre=unchanged}}
 +
{{PacketList|{{change|0x3D|0x3E}}|Look At|pre=unchanged}}
 +
{{PacketList|{{change|0x3E|0x3F}}|Synchronize Player Position|pre=unchanged}}
 +
{{PacketList|{{change|0x3F|0x40}}|Update Recipe Book|pre=unchanged}}
 +
{{PacketList|{{change|0x40|0x41}}|Remove Entities|pre=unchanged}}
 +
{{PacketList|{{change|0x41|0x42}}|Remove Entity Effect|pre=unchanged}}
 +
{{PacketList|{{change|0x42|0x43}}|Reset Score|pre=unchanged}}
 +
{{PacketList|{{change|0x43|0x44}}|Remove Resource Pack (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x44|0x45}}|Add Resource Pack (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x45|0x46}}|Respawn|pre=unchanged}}
 +
{{PacketList|{{change|0x46|0x47}}|Set Head Rotation|pre=unchanged}}
 +
{{PacketList|{{change|0x47|0x48}}|Update Section Blocks|pre=unchanged}}
 +
{{PacketList|{{change|0x48|0x49}}|Select Advancements Tab|pre=unchanged}}
 +
{{PacketList|{{change|0x49|0x4A}}|Server Data|pre=unchanged}}
 +
{{PacketList|{{change|0x4A|0x4B}}|Set Action Bar Text|pre=unchanged}}
 +
{{PacketList|{{change|0x4B|0x4C}}|Set Border Center|pre=unchanged}}
 +
{{PacketList|{{change|0x4C|0x4D}}|Set Border Lerp Size|pre=unchanged}}
 +
  {{PacketList|{{change|0x4D|0x4E}}|Set Border Size|pre=unchanged}}
 +
  {{PacketList|{{change|0x4E|0x4F}}|Set Border Warning Delay|pre=unchanged}}
 +
{{PacketList|{{change|0x4F|0x50}}|Set Border Warning Distance|pre=unchanged}}
 +
{{PacketList|{{change|0x50|0x51}}|Set Camera|pre=unchanged}}
 +
{{PacketList|{{change|0x51|0x52}}|Set Held Item|pre=unchanged}}
 +
{{PacketList|{{change|0x52|0x53}}|Set Center Chunk|pre=unchanged}}
 +
{{PacketList|{{change|0x53|0x54}}|Set Render Distance|pre=unchanged}}
 +
{{PacketList|{{change|0x54|0x55}}|Set Default Spawn Position|pre=unchanged}}
 +
{{PacketList|{{change|0x55|0x56}}|Display Objective|pre=unchanged}}
 +
{{PacketList|{{change|0x56|0x57}}|Set Entity Metadata|pre=unchanged}}
 +
{{PacketList|{{change|0x57|0x58}}|Link Entities|pre=unchanged}}
 +
{{PacketList|{{change|0x58|0x59}}|Set Entity Velocity|pre=unchanged}}
 +
{{PacketList|{{change|0x59|0x5A}}|Set Equipment|pre=unchanged}}
 +
{{PacketList|{{change|0x5A|0x5B}}|Set Experience|pre=unchanged}}
 +
{{PacketList|{{change|0x5B|0x5C}}|Set Health|pre=unchanged}}
 +
{{PacketList|{{change|0x5C|0x5D}}|Update Objectives|pre=unchanged}}
 +
{{PacketList|{{change|0x5D|0x5E}}|Set Passengers|pre=unchanged}}
 +
{{PacketList|{{change|0x5E|0x5F}}|Update Teams|pre=unchanged}}
 +
{{PacketList|{{change|0x5F|0x60}}|Update Score|pre=unchanged}}
 +
{{PacketList|{{change|0x60|0x61}}|Set Simulation Distance|pre=unchanged}}
 +
{{PacketList|{{change|0x61|0x62}}|Set Subtitle Text|pre=unchanged}}
 +
{{PacketList|{{change|0x62|0x63}}|Update Time|pre=unchanged}}
 +
{{PacketList|{{change|0x63|0x64}}|Set Title Text|pre=unchanged}}
 +
{{PacketList|{{change|0x64|0x65}}|Set Title Animation Times|pre=unchanged}}
 +
{{PacketList|{{change|0x65|0x66}}|Entity Sound Effect|pre=unchanged}}
 +
{{PacketList|{{change|0x66|0x67}}|Sound Effect|pre=unchanged}}
 +
{{PacketList|{{change|0x67|0x68}}|Start Configuration|pre=unchanged}}
 +
{{PacketList|{{change|0x68|0x69}}|Stop Sound|pre=unchanged}}
 +
{{PacketList|0x6A|Store Cookie (Play)|rel=added}}
 +
{{PacketList|{{change|0x69|0x6B}}|System Chat Message|pre=unchanged}}
 +
{{PacketList|{{change|0x6A|0x6C}}|Set Tab List Header And Footer|pre=unchanged}}
 +
{{PacketList|{{change|0x6B|0x6D}}|Tag Query Response|pre=unchanged}}
 +
{{PacketList|{{change|0x6C|0x6E}}|Pickup Item|pre=unchanged}}
 +
{{PacketList|{{change|0x6D|0x6F}}|Teleport Entity|pre=unchanged}}
 +
{{PacketList|{{change|0x6E|0x70}}|Set Ticking State|pre=unchanged}}
 +
{{PacketList|{{change|0x6F|0x71}}|Step Tick|pre=unchanged}}
 +
{{PacketList|0x72|Transfer (Play)|rel=added}}
 +
{{PacketList|{{change|0x70|0x73}}|Update Advancements|pre=unchanged}}
 +
{{PacketList|{{change|0x71|0x74}}|Update Attributes}}
 +
{{PacketList|{{change|0x72|0x75}}|Entity Effect}}
 +
{{PacketList|{{change|0x73|0x76}}|Update Recipes|pre=unchanged}}
 +
{{PacketList|{{change|0x74|0x77}}|Update Tags (play)|pre=unchanged}}
 
  |-
 
  |-
  | Item
+
  !colspan="4"| Play serverbound
  | [[Slot Data|Slot]]
+
{{PacketList|0x10|Cookie Response (play)|rel=added}}
  | Item in slot format
+
{{PacketList|{{change|0x10|0x11}}|Serverbound Plugin Message (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x11|0x12}}|Edit Book|pre=unchanged}}
 +
{{PacketList|{{change|0x12|0x13}}|Query Entity Tag|pre=unchanged}}
 +
{{PacketList|{{change|0x13|0x14}}|Interact|pre=unchanged}}
 +
{{PacketList|{{change|0x14|0x15}}|Jigsaw Generate|pre=unchanged}}
 +
{{PacketList|{{change|0x15|0x16}}|Serverbound Keep Alive (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x16|0x17}}|Lock Difficulty|pre=unchanged}}
 +
{{PacketList|{{change|0x17|0x18}}|Set Player Position|pre=unchanged}}
 +
{{PacketList|{{change|0x18|0x19}}|Set Player Position and Rotation|pre=unchanged}}
 +
{{PacketList|{{change|0x19|0x1A}}|Set Player Rotation|pre=unchanged}}
 +
{{PacketList|{{change|0x1A|0x1B}}|Set Player On Ground|pre=unchanged}}
 +
{{PacketList|{{change|0x1B|0x1C}}|Move Vehicle|pre=unchanged}}
 +
{{PacketList|{{change|0x1C|0x1D}}|Paddle Boat|pre=unchanged}}
 +
{{PacketList|{{change|0x1D|0x1E}}|Pick Item|pre=unchanged}}
 +
  {{PacketList|{{change|0x1E|0x1F}}|Ping Request (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x1F|0x20}}|Place Recipe|pre=unchanged}}
 +
{{PacketList|{{change|0x20|0x21}}|Player Abilities|pre=unchanged}}
 +
{{PacketList|{{change|0x21|0x22}}|Player Action|pre=unchanged}}
 +
{{PacketList|{{change|0x22|0x23}}|Player Command|pre=unchanged}}
 +
{{PacketList|{{change|0x23|0x24}}|Player Input|pre=unchanged}}
 +
{{PacketList|{{change|0x24|0x25}}|Pong (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x25|0x26}}|Change Recipe Book Settings|pre=unchanged}}
 +
{{PacketList|{{change|0x26|0x27}}|Set Seen Recipe|pre=unchanged}}
 +
{{PacketList|{{change|0x27|0x28}}|Rename Item|pre=unchanged}}
 +
{{PacketList|{{change|0x28|0x29}}|Resource Pack Response (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x29|0x2A}}|Seen Advancements|pre=unchanged}}
 +
{{PacketList|{{change|0x2A|0x2B}}|Select Trade|pre=unchanged}}
 +
{{PacketList|{{change|0x2B|0x2C}}|Set Beacon Effect|pre=unchanged}}
 +
{{PacketList|{{change|0x2C|0x2D}}|Set Held Item|pre=unchanged}}
 +
{{PacketList|{{change|0x2D|0x2E}}|Program Command Block|pre=unchanged}}
 +
{{PacketList|{{change|0x2E|0x2F}}|Program Command Block Minecart|pre=unchanged}}
 +
{{PacketList|{{change|0x2F|0x30}}|Set Creative Mode Slot|pre=unchanged}}
 +
{{PacketList|{{change|0x30|0x31}}|Program Jigsaw Block|pre=unchanged}}
 +
{{PacketList|{{change|0x31|0x32}}|Program Structure Block|pre=unchanged}}
 +
{{PacketList|{{change|0x32|0x33}}|Update Sign|pre=unchanged}}
 +
{{PacketList|{{change|0x33|0x34}}|Swing Arm|pre=unchanged}}
 +
{{PacketList|{{change|0x34|0x35}}|Teleport To Entity|pre=unchanged}}
 +
{{PacketList|{{change|0x35|0x36}}|Use Item On|pre=unchanged}}
 +
  {{PacketList|{{change|0x36|0x37}}|Use Item|pre=unchanged}}
 
  |}
 
  |}
  
==== Spawn Player ====
+
== New/modified data types ==
  
This packet is sent by the server when a player comes into visible range, ''not'' when a player joins.
+
No changes so far.
  
This packet must be sent after the [[#Player List Item|Player List Item]] ([[#Play|Play]], 0x38, clientbound) packet that adds the player data for the client to use when spawning a player. The tab includes skin/cape data.
+
== Entity Metadata ==
  
Servers can, however, safely spawn player entities for players not in visible range. The client appears to handle it correctly.
+
{{#vardefine: meta_prerelease | 1}}
  
When in online-mode the UUIDs must be valid and have valid skin blobs, in offline-mode UUID v3 is used.
+
{{Metadata type definition/begin}}
 
+
! Value
For NPCs UUID v2 should be used. Note:
+
! Notes
 +
{{Metadata type definition|Byte}}
 +
| {{Type|Byte}}
 +
|
 +
{{Metadata type definition|VarInt}}
 +
| {{Type|VarInt}}
 +
|
 +
{{Metadata type definition|VarLong}}
 +
| {{Type|VarLong}}
 +
|
 +
{{Metadata type definition|Float}}
 +
| {{Type|Float}}
 +
|
 +
{{Metadata type definition|String}}
 +
| {{Type|String}}
 +
|
 +
{{Metadata type definition|Text Component}}
 +
| {{Type|Text Component}}
 +
|
 +
{{Metadata type definition|Optional Text Component}}
 +
| ({{Type|Boolean}}, {{Type|Optional}} {{Type|Text Component}})
 +
| Text Component is present if the Boolean is set to true.
 +
{{Metadata type definition|Slot}}
 +
| {{Type|Slot}}
 +
|
 +
{{Metadata type definition|Boolean}}
 +
| {{Type|Boolean}}
 +
|
 +
{{Metadata type definition|Rotations}}
 +
| ({{Type|Float}}, {{Type|Float}}, {{Type|Float}})
 +
| rotation on x, rotation on y, rotation on z
 +
{{Metadata type definition|Position}}
 +
| {{Type|Position}}
 +
|
 +
{{Metadata type definition|Optional Position}}
 +
| ({{Type|Boolean}}, {{Type|Optional}} {{Type|Position}})
 +
| Position is present if the Boolean is set to true.
 +
{{Metadata type definition|Direction}}
 +
| {{Type|VarInt}} {{Type|Enum}}
 +
| Down = 0, Up = 1, North = 2, South = 3, West = 4, East = 5
 +
{{Metadata type definition|Optional UUID}}
 +
| ({{Type|Boolean}}, {{Type|Optional}} {{Type|UUID}})
 +
| UUID is present if the Boolean is set to true.
 +
{{Metadata type definition|Block State}}
 +
| {{Type|VarInt}}
 +
| An ID in the block state registry.
 +
{{Metadata type definition|Optional Block State}}
 +
| {{Type|VarInt}}
 +
| 0 for absent (air is unrepresentable); otherwise, an ID in the block state registry.
 +
{{Metadata type definition|NBT}}
 +
| {{Type|NBT}}
 +
|
 +
{{Metadata type definition|Particle}}
 +
| ({{Type|VarInt}}, Varies)
 +
| particle type (an ID in the <code>minecraft:particle_type</code> registry), particle data (See [[Particles]].)
 +
{{Metadata type definition|Villager Data}}
 +
| ({{Type|VarInt}}, {{Type|VarInt}}, {{Type|VarInt}})
 +
| villager type, villager profession, level (See below.)
 +
{{Metadata type definition|Optional VarInt}}
 +
| {{Type|VarInt}}
 +
| 0 for absent; 1 + actual value otherwise. Used for entity IDs.
 +
{{Metadata type definition|Pose}}
 +
| {{Type|VarInt}} {{Type|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{{change||2=, SLIDING = 15, SHOOTING = 16, INHALING = 17}}
 +
{{Metadata type definition|Cat Variant}}
 +
| {{Type|VarInt}}
 +
| An ID in the <code>minecraft:cat_variant</code> registry.
 +
{{Metadata type definition|Frog Variant}}
 +
| {{Type|VarInt}}
 +
| An ID in the <code>minecraft:frog_variant</code> registry.
 +
{{Metadata type definition|Optional Global Position}}
 +
| ({{Type|Boolean}}, {{Type|Optional}} {{Type|Identifier}}, {{Type|Optional}} {{Type|Position}})
 +
| dimension identifier, position; only if the Boolean is set to true.
 +
{{Metadata type definition|Painting Variant}}
 +
| {{Type|VarInt}}
 +
| An ID in the <code>minecraft:painting_variant</code> registry.
 +
{{Metadata type definition|Sniffer State}}
 +
| {{Type|VarInt}} {{Type|Enum}}
 +
| IDLING = 0, FEELING_HAPPY = 1, SCENTING = 2, SNIFFING = 3, SEARCHING = 4, DIGGING = 5, RISING = 6
 +
{{Metadata type definition|Armadillo State|rel=added}}
 +
| {{Type|VarInt}} {{Type|Enum}}
 +
| IDLE = 0, ROLLING = 1, SCARED = 2
 +
{{Metadata type definition|Vector3}}
 +
| ({{Type|Float}}, {{Type|Float}}, {{Type|Float}})
 +
| x, y, z
 +
{{Metadata type definition|Quaternion}}
 +
| ({{Type|Float}}, {{Type|Float}}, {{Type|Float}}, {{Type|Float}})
 +
| x, y, z, w
 +
|}
  
<+Grum> i will never confirm this as a feature you know that :)
+
=== Armadillo ===
  
In an example UUID, <code>xxxxxxxx-xxxx-Yxxx-xxxx-xxxxxxxxxxxx</code>, the UUID version is specified by <code>Y</code>. So, for UUID v3, <code>Y</code> will always be <code>3</code>, and for UUID v2, <code>Y</code> will always be <code>2</code>.
+
{{Metadata inherit|Armadillo|inherits=Animal|start_at=17}}
 
+
{| class="wikitable" {{added}}
{| class="wikitable"
+
  ! Index
  ! Packet ID
+
  ! Type
  ! State
+
  !style="width: 250px;" colspan="2"| Meaning
! Bound To
+
  ! Default
! Field Name
 
! Field Type
 
  ! Notes
 
|-
 
|rowspan="9"| 0x0C
 
|rowspan="9"| Play
 
  |rowspan="9"| Client
 
| Entity ID
 
| VarInt
 
| Player's EID
 
|-
 
| Player UUID
 
| UUID
 
|
 
|-
 
| X
 
| Int
 
| Player X as a [[Data Types#Fixed-point numbers|Fixed-Point number]]
 
|-
 
| Y
 
| Int
 
| Player Y as a [[Data Types#Fixed-point numbers|Fixed-Point number]]
 
|-
 
| Z
 
| Int
 
| Player Z as a [[Data Types#Fixed-point numbers|Fixed-Point number]]
 
|-
 
| Yaw
 
| Angle
 
|
 
|-
 
| Pitch
 
| Angle
 
|
 
|- style="background-color: #f4cccc"
 
| Current Item
 
| Short
 
| The item the player is currently holding. Note that this should be 0 for “no item”, unlike -1 used in other packets.
 
 
  |-
 
  |-
  | Metadata
+
  | {{Metadata id|added}}
  | [[Entities#Entity Metadata Format|Metadata]]
+
  | {{Metadata type|Armadillo State}}
  |  
+
|colspan="2"| Armadillo State
 +
  | IDLE
 
  |}
 
  |}
  
{{Warning|A negative Current Item crashes clients}}
+
== Block Actions ==
  
{{Warning|The client will crash if no Metadata is sent}}
+
No changes so far.
  
 +
== Inventories ==
  
==== Spawn Object ====
+
No changes so far.
  
Sent by the server when an object/vehicle is created.
+
== Plugin Channels ==
  
{| class="wikitable"
+
No changes so far.
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="13"| 0x0E
 
|rowspan="13"| Play
 
|rowspan="13"| Client
 
| Entity ID
 
| VarInt
 
| EID of the object
 
|- style="background-color: #d9ead3;"
 
| Object UUID
 
| UUID
 
|
 
|-
 
| Type
 
| Byte
 
| The type of object (See [[Entities#Objects]])
 
|-
 
| X
 
| Int
 
| X position as a [[Data Types#Fixed-point numbers|Fixed-Point number]]
 
|-
 
| Y
 
| Int
 
| Y position as a [[Data Types#Fixed-point numbers|Fixed-Point number]]
 
|-
 
| Z
 
| Int
 
| Z position as a [[Data Types#Fixed-point numbers|Fixed-Point number]]
 
|-
 
| Pitch
 
| Angle
 
|
 
|-
 
| Yaw
 
| Angle
 
|
 
|- style="background-color: #f4cccc"
 
| Data
 
| [[Object Data]]
 
|
 
|-  style="background-color: #d9ead3;"
 
| Info
 
| Int
 
| Depends on object [[Object Data]]
 
|-  style="background-color: #d9ead3;"
 
| Velocity X
 
| Short
 
|
 
|-  style="background-color: #d9ead3;"
 
| Velocity Y
 
| Short
 
|
 
|-  style="background-color: #d9ead3;"
 
| Velocity Z
 
| Short
 
 
|}
 
  
==== Spawn Mob ====
+
== Handshake ==
  
Sent by the server when a mob entity is spawned.
+
=== Serverbound ===
  
{| class="wikitable"
+
==== Handshake ====
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="13"| 0x0F
 
|rowspan="13"| Play
 
|rowspan="13"| Client
 
| Entity ID
 
| VarInt
 
|
 
|- style="background-color: #d9ead3;"
 
| Entity UUID
 
| UUID
 
|
 
|-
 
| Type
 
| Unsigned Byte
 
| The type of mob. See [[Entities#Mobs]]
 
|-
 
| X
 
| Int
 
| X position as a [[Data Types#Fixed-point numbers|Fixed-Point number]]
 
|-
 
| Y
 
| Int
 
| Y position as a [[Data Types#Fixed-point numbers|Fixed-Point number]]
 
|-
 
| Z
 
| Int
 
| Z position as a [[Data Types#Fixed-point numbers|Fixed-Point number]]
 
|-
 
| Yaw
 
| Angle
 
|
 
|-
 
| Pitch
 
| Angle
 
|
 
|-
 
| Head Pitch
 
| Angle
 
|
 
|-
 
| Velocity X
 
| Short
 
| Same units as [[Protocol#Entity Velocity|Entity Velocity]]
 
|-
 
| Velocity Y
 
| Short
 
| Same units as [[Protocol#Entity Velocity|Entity Velocity]]
 
|-
 
| Velocity Z
 
| Short
 
| Same units as [[Protocol#Entity Velocity|Entity Velocity]]
 
|-
 
| Metadata
 
| [[Entities#Entity Metadata Format|Metadata]]
 
|
 
|}
 
  
==== Combat Event ====
+
This causes the server to switch into the target state.
  
 
{| class="wikitable"
 
{| class="wikitable"
Line 296: Line 337:
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="6"| 0x42
+
  | rowspan="4"| 0x00
  |rowspan="6"| Play
+
  | rowspan="4"| Handshaking
  |rowspan="6"| Client
+
  | rowspan="4"| Server
  | Event
+
  | Protocol Version
  | VarInt
+
  | [[#Definitions:varint|VarInt]]
  | 0: enter combat, 1: end combat, 2: entity dead
+
  | See [[protocol version numbers]] (currently 765 in Minecraft 1.20.4).
 
  |-
 
  |-
  | Duration
+
  | Server Address
  | Optional VarInt
+
  | [[#Definitions:string|String]] (255)
  | Only for end combat
+
  | 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.
 
  |-
 
  |-
  | Player ID
+
  | Server Port
  | Optional VarInt
+
  | [[#Definitions:unsigned-short|Unsigned Short]]
  | Only for entity dead
+
  | Default is 25565. The Notchian server does not use this information.
 
  |-
 
  |-
  | Entity ID
+
  | Next State
  | Optional Int
+
  | [[#Definitions:varint|VarInt]] [[#Definitions:enum|Enum]]
  | Only for end combat and entity dead
+
  | 1 for [[#Status|Status]], 2 for [[#Login|Login]]{{change||, 3 for [[#Login|Transfer]]}}.
|-
 
| Message
 
| {{Change|String|[[Chat]]}}
 
| Only for entity dead
 
 
  |}
 
  |}
  
==== Boss Bar ====  
+
== Status ==
This packet replaces Update Entity NBT packet which has been removed.
+
 
{| class="wikitable"
+
=== Clientbound ===
! Packet ID
 
! State
 
! Bound To
 
!colspan="2"| Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="15"| 0x49
 
|rowspan="15"| Play
 
|rowspan="15"| Client
 
|colspan="2"| UUID
 
| UUID
 
| Unique ID for this bar
 
|-
 
|colspan="2"| Action
 
| VarInt
 
|
 
|-
 
! Action
 
! Field Name
 
!
 
!
 
|-
 
|rowspan="5"| 0: add
 
| Title
 
| [[Chat]]
 
|
 
|-
 
| Health
 
| Float
 
|
 
|-
 
| Color
 
| VarInt
 
| Color ID (see below)
 
|-
 
| Dividers
 
| VarInt
 
|
 
|-
 
| Flags
 
| Unsigned Byte
 
| Bit mask: 0x1 should darken sky, 0x2: is dragon bar
 
|-
 
| 1: remove
 
| ''no fields''
 
| ''no fields''
 
| Removes this boss bar
 
|-
 
| 2: update health
 
| Health
 
| Float
 
|
 
|-
 
| 3: update title
 
| Title
 
| [[Chat]]
 
|
 
|-
 
|rowspan="2"| 4: update style
 
| Color
 
| VarInt
 
|
 
|-
 
| Dividers
 
| VarInt
 
|
 
|-
 
| 5: update flags
 
| Flags
 
| Unsigned Byte
 
|
 
|-
 
|}
 
  
{| class="wikitable"
+
No changes so far.
! ID
 
! Color
 
|-
 
| 0
 
| Pink(ish)
 
|-
 
| 1
 
| Cyan
 
|-
 
| 2
 
| Red
 
|-
 
| 3
 
| Lime
 
|-
 
| 4
 
| Yellow
 
|-
 
| 5
 
| Purple
 
|-
 
| 6
 
| White
 
|}
 
  
 
=== Serverbound ===
 
=== Serverbound ===
  
==== Use Entity ====
+
No changes so far.
 +
 
 +
== Login ==
  
This packet is sent from the client to the server when the client attacks or right-clicks another entity (a player, minecart, etc).
+
=== Clientbound ===
  
A Notchian server only accepts this packet if the entity being attacked/used is visible without obstruction and within a 4-unit radius of the player's position.
+
==== Cookie Request (login) ====
  
Note that middle-click in creative mode is interpreted by the client and sent as a [[#Creative Inventory Action|Creative Inventory Action]] packet instead.
+
Requests a cookie that was previously stored.
  
{| class="wikitable"
+
{| class="wikitable" {{added}}
 
  ! Packet ID
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="6"| 0x02
+
  | rowspan="1"| 0x05
  |rowspan="6"| Play
+
  | rowspan="1"| Login
  |rowspan="6"| Server
+
  | rowspan="1"| Client
  | Target
+
  | colspan="2"| Key
| VarInt
+
  | colspan="2"| Identifier
|
+
  | The identifier of the cookie.
|-
 
| Type
 
| VarInt
 
| 0: interact, 1: attack, 2: interact at
 
|-
 
| Target X
 
| Optional Float
 
  | Only if Type is interact at
 
|-
 
| Target Y
 
| Optional Float
 
| Only if Type is interact at
 
|-
 
| Target Z
 
| Optional Float
 
| Only if Type is interact at
 
|- style="background-color: #d9ead3;"
 
| Hand
 
| Optional Byte
 
  | Only if Type is interact or interact at; 0: main hand, 1: off hand
 
 
  |}
 
  |}
  
==== Player Digging ====
+
=== Serverbound ===
 +
 
 +
==== Cookie Response (login) ====
  
Sent when the player mines a block. A Notchian server only accepts digging packets with coordinates within a 6-unit radius of the player's position.
+
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
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="3"| 0x07
+
  | rowspan="3"| 0x04
  |rowspan="3"| Play
+
  | rowspan="3"| Login
  |rowspan="3"| Server
+
  | rowspan="3"| Server
  | Status
+
  | colspan="2"| Key
  | Byte
+
  | colspan="2"| Identifier
  | The action the player is taking against the block (see below)
+
  | The identifier of the cookie.
 
  |-
 
  |-
  | Location
+
  | colspan="2"| Has Payload
  | Position
+
  | colspan="2"| Boolean
  | Block position
+
  | The payload is only present if the cookie exists on the client.
 
  |-
 
  |-
  | Face
+
  | colspan="2"| Payload
  | Byte
+
  | colspan="2"| Optional ByteArray(5120)
  | The face being hit (see below)
+
  | The data of the cookie, if any.
 
  |}
 
  |}
  
Status can be one of seven values:
+
== Configuration ==
  
{| class="wikitable"
+
=== Clientbound ===
! Meaning
 
! Value
 
|-
 
| Started digging
 
| <code>0</code>
 
|-
 
| Cancelled digging
 
| <code>1</code>
 
|-
 
| Finished digging
 
| <code>2</code>
 
|-
 
| Drop item stack
 
| <code>3</code>
 
|-
 
| Drop item
 
| <code>4</code>
 
|-
 
| Shoot arrow / finish eating
 
| <code>5</code>
 
|- style="background-color: #d9ead3;"
 
| Swap item in Hand
 
| <code>6</code>
 
|}
 
 
 
Notchian clients send a 0 (started digging) when they start digging and a 2 (finished digging) once they think they are finished. If digging is aborted, the client simply sends a 1 (cancel digging).
 
 
 
Status code 4 (drop item) is a special case. In-game, when you use the Drop Item command (keypress 'q'), a dig packet with a status of 4, Location set to 0/0/0, and Face set to 0, is sent from client to server. Status code 3 is similar, but drops the entire stack.
 
 
 
Status code 5 (shoot arrow / finish eating) is also a special case. Location is set to 0/0/0 like above, but the face field is set to 255.
 
 
 
Status code 6 is another special case. Used to swap or assign an item to the second hand. Location is set to 0/0/0 and Face is set to 0.
 
 
 
The Face field can be one of six values, representing the face being hit:
 
 
 
{| class="wikitable"
 
|-
 
! Value
 
| 0
 
| 1
 
| 2
 
| 3
 
| 4
 
| 5
 
|-
 
! Offset
 
| -Y
 
| +Y
 
| -Z
 
| +Z
 
| -X
 
| +X
 
|}
 
  
==== {{Change||Use Item}} ====
+
==== Cookie Request (configuration) ====
  
Sent when pressing the Use Item key (default: right click) with an item in hand.
+
Requests a cookie that was previously stored.
  
{| class="wikitable"
+
{| class="wikitable" {{added}}
 
  ! Packet ID
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="1"| 0x08
+
  | rowspan="1"| 0x00
  |rowspan="1"| Play
+
  | rowspan="1"| Configuration
  |rowspan="1"| Server
+
  | rowspan="1"| Client
  | Hand
+
  | colspan="2"| Key
  | Byte
+
  | colspan="2"| Identifier
  | Hand used for the animation
+
  | The identifier of the cookie.
 
  |}
 
  |}
  
==== Player Block Placement ====
+
==== 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.
  
{| class="wikitable"
+
{| class="wikitable" {{added}}
|-
 
 
  ! Packet ID
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="6"| {{Change|0x08|0x09}}
+
  | rowspan="2"| 0x09
  |rowspan="6"| Play
+
  | rowspan="2"| Configuration
  |rowspan="6"| Server
+
  | rowspan="2"| Client
  | Location
+
  | colspan="2"| Key
| Position
+
  | colspan="2"| Identifier
  | Block position
+
  | The identifier of the cookie.
|-
 
| Face
 
| {{Change|Byte|VarInt}}
 
| The face on which the block is placed (see above)
 
|-
 
| {{Change|Held Item|Hand}}
 
| {{Change|[[Slot Data|Slot]]|VarInt}}
 
  | The hand from which the block is placed; 0: main hand, 1: off hand
 
|-
 
| Cursor Position X
 
| Byte
 
| The position of the crosshair on the block
 
|-
 
| Cursor Position Y
 
| Byte
 
|
 
 
  |-
 
  |-
  | Cursor Position Z
+
  | colspan="2"| Payload
  | Byte
+
  | colspan="2"| ByteArray(5120)
  |  
+
  | The data of the cookie.
 
  |}
 
  |}
  
In normal operation (i.e. placing a block), this packet is sent once, with the values set normally.
+
==== Transfer (configuration) ====
 
 
This packet has a special case where X, Y, Z, and Direction are all -1. (Note that Y is unsigned so set to 255.) This special packet indicates that the currently held item for the player should have its state updated such as eating food, pulling back bows, using buckets, etc.
 
 
 
Special note on using buckets: When using buckets, the Notchian client might send two packets: first a normal and then a special case. The first normal packet is sent when you're looking at a block (e.g. the water you want to scoop up). This normal packet does not appear to do anything with a Notchian server. The second, special case packet appears to perform the action — based on current position/orientation and with a distance check — it appears that buckets can only be used within a radius of 6 units.
 
  
==== Held Item Change ====
+
Notifies the client that it should transfer to the given server. Cookies previously stored are preserved between server transfers.
  
Sent when the player changes the slot selection.
+
{| class="wikitable" {{added}}
 
 
{| class="wikitable"
 
 
  ! Packet ID
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="1"| {{Change|0x09|0x0A}}
+
  | rowspan="2"| 0x0A
  |rowspan="1"| Play
+
| rowspan="2"| Configuration
  |rowspan="1"| Server
+
  | rowspan="2"| Client
  | Slot
+
| colspan="2"| Host
  | Short
+
  | colspan="2"| String
  | The slot which the player has selected (0–8)
+
| The hostname of IP of the server.
 +
|-
 +
  | colspan="2"| Port
 +
  | colspan="2"| VarInt
 +
  | The port of the server.
 
  |}
 
  |}
  
==== Animation ====
+
=== Serverbound ===
 +
 
 +
==== Cookie Response (configuration) ====
  
Sent when the player's arm swings
+
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
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="1"| {{Change|0x0A|0x0B}}
+
  | rowspan="3"| 0x01
  |rowspan="1"| Play
+
| rowspan="3"| Configuration
  |rowspan="1"| Server
+
  | rowspan="3"| Server
  |style="background-color: #d9ead3;"| Hand
+
  | colspan="2"| Key
  |style="background-color: #d9ead3;"| VarInt
+
  | colspan="2"| Identifier
  |style="background-color: #d9ead3;"| Hand used for the animation
+
| The identifier of the cookie.
 +
|-
 +
| colspan="2"| Has Payload
 +
  | colspan="2"| Boolean
 +
| The payload is only present if the cookie exists on the client.
 +
|-
 +
| colspan="2"| Payload
 +
  | colspan="2"| Optional ByteArray(5120)
 +
| The data of the cookie, if any.
 
  |}
 
  |}
  
==== Entity Action ====
+
== Play ==
 +
 
 +
=== Clientbound ===
 +
 
 +
==== Cookie Request (play) ====
  
Sent at least when crouching, leaving a bed, or sprinting. To send action animation to client use 0x28. The client will send this with Action ID = 3 when “Leave Bed” is clicked.
+
Requests a cookie that was previously stored.
  
{| class="wikitable"
+
{| class="wikitable" {{added}}
 
  ! Packet ID
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="3"| {{Change|0x0B|0x0C}}
+
  | rowspan="1"| 0x16
  |rowspan="3"| Play
+
  | rowspan="1"| Play
  |rowspan="3"| Server
+
  | rowspan="1"| Client
  | Entity ID
+
  | colspan="2"| Key
| VarInt
+
  | colspan="2"| Identifier
  | Player ID
+
  | The identifier of the cookie.
|-
 
| Action ID
 
| VarInt
 
  | The ID of the action, see below
 
|-
 
| Jump Boost
 
| VarInt
 
| Horse jump boost. Ranged from 0 -> 100.
 
 
  |}
 
  |}
  
Action ID can be one of the following values:
+
==== Store Cookie (play) ====
  
{| class="wikitable"
+
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.
! ID
 
! Action
 
|-
 
| 0
 
| Crouch
 
|-
 
| 1
 
| Uncrouch
 
|-
 
| 2
 
| Leave bed
 
|-
 
| 3
 
| Start sprinting
 
|-
 
| 4
 
| Stop sprinting
 
|-
 
| 5
 
| Jump with horse
 
|- style="background-color: #f4cccc; text-decoration: line-through;"
 
| 6
 
| Open inventory
 
|}
 
 
 
==== Steer Vehicle ====
 
  
{| class="wikitable"
+
{| class="wikitable" {{added}}
 
  ! Packet ID
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="3"| {{Change|0x0C|0x0D}}
+
  | rowspan="2"| 0x6A
  |rowspan="3"| Play
+
  | rowspan="2"| Play
  |rowspan="3"| Server
+
  | rowspan="2"| Client
  | Sideways
+
  | colspan="2"| Key
  | Float
+
  | colspan="2"| Identifier
  | Positive to the left of the player
+
  | The identifier of the cookie.
|-
 
| Forward
 
| Float
 
| Positive forward
 
 
  |-
 
  |-
  | Flags
+
  | colspan="2"| Payload
  | Unsigned Byte
+
  | colspan="2"| ByteArray(5120)
  | Bit mask. 0x1: jump, 0x2: unmount
+
  | The data of the cookie.
 
  |}
 
  |}
  
==== Close Window ====
+
==== Transfer (play) ====
 
 
This packet is sent by the client when closing a window.
 
  
Note, Notchian clients send a close window message with Window ID 0 to close their inventory even though there is never an Open Window message for the inventory.
+
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
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  | {{Change|0x0D|0x0E}}
+
  | rowspan="2"| 0x72
  |rowspan="1"| Play
+
  | rowspan="2"| Play
  |rowspan="1"| Server
+
  | rowspan="2"| Client
  | Window ID
+
  | colspan="2"| Host
  | Unsigned Byte
+
  | colspan="2"| String
  | This is the ID of the window that was closed. 0 for inventory.
+
  | The hostname of IP of the server.
 +
|-
 +
| colspan="2"| Port
 +
| colspan="2"| VarInt
 +
| The port of the server.
 
  |}
 
  |}
  
==== Click Window ====
+
==== Update Attributes ====
  
This packet is sent by the player when it clicks on a slot in a window.
+
Sets {{Minecraft Wiki|Attribute|attributes}} on the given entity.
  
 
{| class="wikitable"
 
{| class="wikitable"
Line 772: Line 603:
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="6"| {{Change|0x0E|0x0F}}
+
  | rowspan="6"| 0x71
  |rowspan="6"| Play
+
  | rowspan="6"| Play
  |rowspan="6"| Server
+
  | rowspan="6"| Client
  | Window ID
+
  | colspan="2"| Entity ID
  | Unsigned Byte
+
  | colspan="2"| VarInt
  | The ID of the window which was clicked. 0 for player inventory.
+
  |
 
  |-
 
  |-
  | Slot
+
  | colspan="2"| Number Of Properties
  | Short
+
  | colspan="2"| VarInt
  | The clicked slot number, see below
+
  | Number of elements in the following array.
 
  |-
 
  |-
  | Button
+
  | rowspan="4"| Property
  | Byte
+
| {{change|Key|Id}}
  | The button used in the click, see below
+
| rowspan="4"| Array
 +
  | {{change|Identifier|VarInt Enum}}
 +
  | See below.
 
  |-
 
  |-
  | Action Number
+
  | Value
  | Short
+
  | Double
  | A unique number for the action, implemented by Notchian as a counter, starting at 1. Used by the server to send back a [[Protocol#Confirm Transaction|Confirm Transaction]].
+
  | See below.
 
  |-
 
  |-
  | Mode
+
  | Number Of Modifiers
  | Byte
+
  | VarInt
  | Inventory operation mode, see below
+
  | Number of elements in the following array.
 
  |-
 
  |-
  | Clicked item
+
  | Modifiers
  | [[Slot Data|Slot]]
+
  | Array of Modifier Data
  | The clicked slot. Has to be empty (item ID = -1) for drop mode.
+
  | See {{Minecraft Wiki|Attribute#Modifiers}}. Modifier Data defined below.
 
  |}
 
  |}
  
See [[Inventory#Windows]] for further information about how slots are indexed.
+
Known Key values (see also {{Minecraft Wiki|Attribute#Modifiers}}):
 
 
When right-clicking on a stack of items, half the stack will be picked up and half left in the slot. If the stack is an odd number, the half left in the slot will be smaller of the amounts.
 
 
 
The distinct type of click performed by the client is determined by the combination of the Mode and Button fields.
 
  
 
{| class="wikitable"
 
{| class="wikitable"
! Mode
 
! Button
 
! Slot
 
! Trigger
 
 
  |-
 
  |-
  !rowspan="2"| 0
+
  ! Id
  | 0
+
  ! Key
  | Normal
+
  ! Default
  | Left mouse click
+
  ! Min
  |-
+
  ! Max
  | 1
+
  ! Label
| Normal
 
| Right mouse click
 
 
  |-
 
  |-
!rowspan="2"| 1
 
 
  | 0
 
  | 0
  | Normal
+
  | generic.armor
  | Shift + left mouse click
+
  | 0.0
 +
| 0.0
 +
| 30.0
 +
| Armor.
 
  |-
 
  |-
 
  | 1
 
  | 1
  | Normal
+
  | generic.armor_toughness
  | Shift + right mouse click ''(identical behavior)''
+
  | 0.0
 +
| 0.0
 +
| 20.0
 +
| Armor Toughness.
 
  |-
 
  |-
  !rowspan="5"| 2
+
  | 2
  | 0
+
| generic.attack_damage
  | Normal
+
| 2.0
  | Number key 1
+
  | 0.0
 +
  | 2048.0
 +
  | Attack Damage.
 
  |-
 
  |-
  | 1
+
  | 3
  | Normal
+
  | generic.attack_knockback
  | Number key 2
+
  | 0.0
 +
| 0.0
 +
| 5.0
 +
| Attack Knockback.
 
  |-
 
  |-
  | 2
+
  | 4
  | Normal
+
  | generic.attack_speed
  | Number key 3
+
| 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.
 
  |-
 
  |-
  |
+
  | 7
  |
+
  | generic.flying_speed
  |
+
  | 0.4
 +
| 0.0
 +
| 1024.0
 +
| Flying Speed.
 
  |-
 
  |-
 
  | 8
 
  | 8
  | Normal
+
  | generic.follow_range
  | Number key 9
+
  | 32.0
  |-
+
  | 0.0
!rowspan="1"| 3
+
  | 2048.0
| 2
+
  | Follow Range.
| Normal
 
| Middle click
 
|-
 
!rowspan="4"| 4
 
  | 0
 
  | Normal*
 
| Drop key (Q) (* Clicked item is different, see above)
 
|-
 
| 1
 
| Normal*
 
| Ctrl + Drop key (Ctrl-Q) ''(drops full stack)''
 
 
  |-
 
  |-
  | 0
+
| 9
  | -999
+
| horse.jump_strength
  | Left click outside inventory holding nothing ''(no-op)''
+
| 0.7
 +
  | 0.0
 +
  | 2.0
 +
  | Jump Strength.
 
  |-
 
  |-
  | 1
+
  | 10
  | -999
+
| generic.knockback_resistance
  | Right click outside inventory holding nothing ''(no-op)''
+
| 0.0
 +
| 0.0
 +
  | 1.0
 +
  | Knockback Resistance.
 
  |-
 
  |-
  !rowspan="6"| 5
+
  | 11
  | 0
+
| generic.luck
  | -999
+
  | 0.0
  | Starting left mouse drag ''(or middle mouse)''
+
  | -1024.0
 +
| 1024.0
 +
  | Luck.
 
  |-
 
  |-
  | 4
+
  | 12
  | -999
+
  | generic.max_absorption
  | Starting right mouse drag
+
  | 0.0
 +
| 0.0
 +
| 2048.0
 +
| Max Absorption.
 
  |-
 
  |-
  | 1
+
| 13
  | Normal
+
| generic.max_health
  | Add slot for left-mouse drag
+
| 20.0
 +
  | 1.0
 +
  | 1024.0
 +
  | Max Health.
 
  |-
 
  |-
  | 5
+
  | 14
  | Normal
+
  | generic.movement_speed
  | Add slot for right-mouse drag
+
| 0.7
 +
| 0.0
 +
| 1024.0
 +
| Movement Speed.
 +
  |- {{added}}
 +
| 15
 +
| generic.scale
 +
| 1.0
 +
| 0.0625
 +
| 16.0
 +
| Scale.
 
  |-
 
  |-
  | 2
+
  | 16
  | -999
+
  | zombie.spawn_reinforcements
  | Ending left mouse drag
+
| 0.0
  |-
+
  | 0.0
  | 6
+
  | 1.0
  | -999
+
  | Spawn Reinforcements Chance.
  | Ending right mouse drag
+
  |- {{added}}
  |-
+
  | 17
  ! 6
+
  | generic.step_height
  | 0
+
  | 0.6
  | Normal
+
  | 0.0
  | Double click
+
  | 10.0
 +
  | Step Height.
 
  |}
 
  |}
  
Starting from version 1.5, “painting mode” is available for use in inventory windows. It is done by picking up stack of something (more than 1 item), then holding mouse button (left, right or middle) and dragging held stack over empty (or same type in case of right button) slots. In that case client sends the following to server after mouse button release (omitting first pickup packet which is sent as usual):
+
''Modifier Data'' structure:
 
 
# packet with mode 5, slot -999, button (0 for left | 4 for right);
 
# packet for every slot painted on, mode is still 5, button (1 | 5);
 
# packet with mode 5, slot -999, button (2 | 6);
 
 
 
If any of the painting packets other than the “progress” ones are sent out of order (for example, a start, some slots, then another start; or a left-click in the middle) the painting status will be reset.
 
 
 
The server will send back a [[#Confirm Transaction|Confirm Transaction]]<!-- note that the anchor should be changed to #Confirm Transaction 2 when merging with [[Protocol]] --> packet. If the click was not accepted, the client must reflect that packet before sending more [[#Click Window|Click Window]] packets, otherwise the server will reject them silently. The Notchian server also sends a [[Protocol#Window Items|Window Items]] packet for the open window and [[Protocol#Set Slot|Set Slot]] packets for the clicked and cursor slot, but only when the click was not accepted, probably to resynchronize client and server.
 
 
 
==== Confirm Transaction ====
 
 
 
<SpaceManiac> noooo idea why the serverbound confirm transaction packet exists
 
<SpaceManiac> I think it's sent as a response to the clientbound confirm transaction in some situations, but it's fuzzy
 
  
 
{| class="wikitable"
 
{| class="wikitable"
  ! Packet ID
+
  |-
! State
 
! Bound To
 
 
  ! Field Name
 
  ! Field Name
 
  ! Field Type
 
  ! Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="3"| {{Change|0x0F|0x10}}
+
  | UUID
|rowspan="3"| Play
+
  | UUID
|rowspan="3"| Server
+
  |
| Window ID
 
  | Byte
 
  | The ID of the window that the action occurred in
 
 
  |-
 
  |-
  | Action Number
+
  | Amount
  | Short
+
  | Double
  | Every action that is to be accepted has a unique number. This field corresponds to that number.
+
  | May be positive or negative.
 
  |-
 
  |-
  | Accepted
+
  | Operation
  | Boolean
+
  | Byte
  | Whether the action was accepted
+
  | See below.
 
  |}
 
  |}
  
==== Creative Inventory Action ====
+
The operation controls how the base value of the modifier is changed.
  
While the user is in the standard inventory (i.e., not a crafting bench) in Creative mode, the player will send this packet.
+
* 0: Add/subtract amount
 +
* 1: Add/subtract amount percent of the current value
 +
* 2: Multiply by amount percent
  
Clicking in the creative inventory menu is quite different from non-creative inventory management. Picking up an item with the mouse actually deletes the item from the server, and placing an item into a slot or dropping it out of the inventory actually tells the server to create the item from scratch. (This can be verified by clicking an item that you don't mind deleting, then severing the connection to the server; the item will be nowhere to be found when you log back in.) As a result of this implementation strategy, the "Destroy Item" slot is just a client-side implementation detail that means "I don't intend to recreate this item.". Additionally, the long listings of items (by category, etc.) are a client-side interface for choosing which item to create. Picking up an item from such listings sends no packets to the server; only when you put it somewhere does it tell the server to create the item in that location.
+
All of the 0's are applied first, and then the 1's, and then the 2's.
  
This action can be described as “set inventory slot”. Picking up an item sets the slot to item ID -1. Placing an item into an inventory slot sets the slot to the specified item. Dropping an item (by clicking outside the window) effectively sets slot -1 to the specified item, which causes the server to spawn the item entity, etc.. All other inventory slots are numbered the same as the non-creative inventory (including slots for the 2×2 crafting menu, even though they aren't visible in the vanilla client).
+
==== Entity Effect ====
  
 
{| class="wikitable"
 
{| class="wikitable"
Line 963: Line 814:
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="2"| {{Change|0x10|0x11}}
+
  | rowspan="7"| 0x72
  |rowspan="2"| Play
+
  | rowspan="7"| Play
  |rowspan="2"| Server
+
  | rowspan="7"| Client
  | Slot
+
  | Entity ID
  | Short
+
  | VarInt
  | Inventory slot
+
  |
 
  |-
 
  |-
  | Clicked Item
+
  | Effect ID
  | [[Slot Data|Slot]]
+
  | VarInt
  |  
+
  | See {{Minecraft Wiki|Status effect#Effect list|this table}}.
|}
 
 
 
==== Enchant Item ====
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
 
  |-
 
  |-
  |rowspan="2"| {{Change|0x11|0x12}}
+
  | Amplifier
|rowspan="2"| Play
 
|rowspan="2"| Server
 
| Window ID
 
 
  | Byte
 
  | Byte
  | The ID of the enchantment table window sent by [[Protocol#Open Window|Open Window]]
+
  | Notchian client displays effect level as Amplifier + 1.
 
  |-
 
  |-
  | Enchantment
+
  | Duration
  | Byte
+
  | VarInt
  | The position of the enchantment on the enchantment table window, starting with 0 as the topmost one
+
  | Duration in ticks. (-1 for infinite)
|}
 
 
 
==== Update Sign ====
 
 
 
This message is sent from the client to the server when the “Done” button is pushed after placing a sign.
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="5"| {{Change|0x12|0x13}}
 
|rowspan="5"| Play
 
|rowspan="5"| Server
 
| Location
 
| Position
 
| Block Coordinates
 
|-
 
| Line 1
 
| [[Chat]]
 
| First line of text in the sign
 
|-
 
| Line 2
 
| [[Chat]]
 
| Second line of text in the sign
 
|-
 
| Line 3
 
| [[Chat]]
 
| Third line of text in the sign
 
|-
 
| Line 4
 
| [[Chat]]
 
| Fourth line of text in the sign
 
|}
 
 
 
==== Player Abilities ====
 
 
 
The latter 2 bytes are used to indicate the walking and flying speeds respectively, while the first byte is used to determine the value of 4 booleans.
 
 
 
The vanilla client sends this packet when the player starts/stops flying with the second parameter changed accordingly. All other parameters are ignored by the vanilla server.
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
 
  |-
 
  |-
|rowspan="3"| {{Change|0x13|0x14}}
 
|rowspan="3"| Play
 
|rowspan="3"| Server
 
 
  | Flags
 
  | Flags
 
  | Byte
 
  | Byte
  | Bit mask. 0x08: damage disabled (god mode), 0x04: can fly, 0x02: is flying, 0x01: is Creative
+
  | Bit field, see below.
  |-
+
  |- {{removed}}
  | Flying Speed
+
  | Has Factor Data
  | Float
+
  | Boolean
  |  
+
  | Used in DARKNESS effect
  |-
+
  |- {{removed}}
  | Walking Speed
+
  | Factor Codec
  | Float
+
  | NBT Tag
  |  
+
  | See below
 
  |}
 
  |}
  
==== Tab-Complete ====
+
{{Need Info|What exact effect does the blend bit flag have on the client? What happens if it is used on effects besides DARKNESS?}}
  
Sent when the user presses ''tab'' while writing text.
+
Within flags:
  
{| class="wikitable"
+
* 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.
  ! Packet ID
+
* 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.
! State
+
* 0x04: Show icon - should the icon be displayed on the client? Usually should be enabled.
! Bound To
+
* {{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.}}
! Field Name
 
! Field Type
 
! Notes
 
|-
 
  |rowspan="3"| {{Change|0x14|0x15}}
 
  |rowspan="3"| Play
 
  |rowspan="3"| Server
 
  | Text
 
  | String
 
| All text behind the cursor
 
  |-
 
| Has Position
 
| Boolean
 
|
 
|-
 
  | Looked At Block
 
| Optional Position
 
| The position of the block being looked at. Only sent if Has Position is true
 
|}
 
 
 
==== Client Settings ====
 
 
 
Sent when the player connects, or when settings are changed.
 
  
{| class="wikitable"
+
{{change|Factor Data|}}
  ! Packet ID
+
{| class="wikitable" {{removed}}
! State
+
  !Name
! Bound To
+
  !Type
! Field Name
+
  !style="width: 250px;" colspan="2"| Notes
  ! Field Type
 
  ! Notes
 
 
  |-
 
  |-
  |rowspan="6"| {{Change|0x15|0x16}}
+
  | padding_duration
|rowspan="6"| Play
+
  | TAG_INT
|rowspan="6"| Server
+
  |
| Locale
 
  | String
 
  | e.g. en_GB
 
 
  |-
 
  |-
  | View Distance
+
  | factor_start
  | Byte
+
  | TAG_FLOAT
  | Client-side render distance, in chunks
+
  |
 
  |-
 
  |-
  | Chat Mode
+
  | factor_target
  | {{Change|Byte|VarInt}}
+
  | TAG_FLOAT
  | 0: enabled, 1: commands only, 2: hidden
+
  |
 
  |-
 
  |-
  | Chat Colors
+
  | factor_current
  | Boolean
+
  | TAG_FLOAT
  | “Colors” multiplayer setting
+
  |
 
  |-
 
  |-
  | Displayed Skin Parts
+
  | effect_changed_timestamp
  | Unsigned Byte
+
  | TAG_INT
| Skin parts, see note below
 
|- style="background-color: #d9ead3;"
 
| Main Hand
 
| VarInt
 
| 0: Left, 1: Right
 
|}
 
 
 
''Displayed Skin Parts'' flags:
 
 
 
* Bit 0 (0x01): Cape enabled
 
* Bit 1 (0x02): Jacket enabled
 
* Bit 2 (0x04): Left Sleeve enabled
 
* Bit 3 (0x08): Right Sleeve enabled
 
* Bit 4 (0x10): Left Pants Leg enabled
 
* Bit 5 (0x20): Right Pants Leg enabled
 
* Bit 6 (0x40): Hat enabled
 
 
 
The most significant bit (bit 7, 0x80) appears to be unused.
 
 
 
==== Client Status ====
 
 
 
Sent when the client is ready to complete login and when the client is ready to respawn after death.
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="1"| {{Change|0x16|0x17}}
 
|rowspan="1"| Play
 
|rowspan="1"| Server
 
| Action ID
 
| VarInt
 
| See below
 
|}
 
 
 
''Action ID'' values:
 
 
 
{| class="wikitable"
 
|-
 
! Action ID
 
! Action
 
|-
 
| 0
 
| Perform respawn
 
 
  |-
 
  |-
  | 1
+
  | factor_previous_frame
  | Request stats
+
  | TAG_FLOAT
 
  |-
 
  |-
  | 2
+
  | had_effect_last_tick
  | {{Change|''Taking Inventory'' achievement|Open Inventory}}
+
  | TAG_BOOLEAN
 
  |}
 
  |}
  
==== Plugin Message ====
+
=== Serverbound ===
  
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>.
+
==== Cookie Response (play) ====
  
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/]
+
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.
  
Note that the data length is known from the packet length, so there is no need for a length member being sent.
+
{| class="wikitable" {{added}}
 
 
{| class="wikitable"
 
 
  ! Packet ID
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
! Field Type
+
  ! colspan="2"| Field Type
! Notes
 
|-
 
|rowspan="2"| {{Change|0x17|0x18}}
 
  |rowspan="2"| Play
 
|rowspan="2"| Server
 
| Channel
 
| String
 
| 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]].
 
|}
 
 
 
==== Spectate ====
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="1"| {{Change|0x18|0x19}}
+
  | rowspan="3"| 0x6A
  |rowspan="1"| Play
+
  | rowspan="3"| Play
  |rowspan="1"| Server
+
  | rowspan="3"| Server
  | Target Player
+
  | colspan="2"| Key
| UUID
+
  | colspan="2"| Identifier
|  
+
  | The identifier of the cookie.
  |}
 
 
 
==== Resource Pack Status ====
 
 
 
{| class="wikitable"
 
  ! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
 
  |-
 
  |-
  |rowspan="2"| {{Change|0x19|0x1A}}
+
  | colspan="2"| Has Payload
|rowspan="2"| Play
+
  | colspan="2"| Boolean
  |rowspan="2"| Server
+
  | The payload is only present if the cookie exists on the client.
| Hash
 
| String
 
  | The hash sent in the [[Protocol#Resource Pack Send|Resource Pack Send]] packet.
 
 
  |-
 
  |-
  | Result
+
  | colspan="2"| Payload
  | VarInt
+
  | colspan="2"| Optional ByteArray(5120)
  | 0: successfully loaded, 1: declined, 2: failed download, 3: accepted
+
  | The data of the cookie, if any.
 
  |}
 
  |}
  
== Status ==
+
[[Category:Minecraft Modern]]
 
 
=== Clientbound ===
 
 
 
No changes so far.
 
 
 
=== Serverbound ===
 
 
 
No changes so far.
 
 
 
== Login ==
 
 
 
=== Clientbound ===
 
 
 
No changes so far.
 
 
 
=== Serverbound ===
 
 
 
No changes so far.
 

Latest revision as of 05:25, 26 February 2024

This page documents the changes from the last stable Minecraft release (currently 1.20.4, protocol 765) to the current pre-release (currently 24w03b, protocol Snapshot 172). 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.

Contents

Data types

No changes so far.

Packets

ID Packet name Documentation
Handshake serverbound
0x00 Handshake Current Pre
Login clientbound
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)
0x05 0x06 Registry Data Current (unchanged)
0x06 0x07 Remove Resource Pack (configuration) Current (unchanged)
0x07 0x08 Add Resource Pack (configuration) Current (unchanged)
0x09 Store Cookie (configuration) Pre
0x0A Transfer (configuration) Pre
0x08 0x0B Feature Flags Current (unchanged)
0x09 0x0C Update Tags (configuration) Current (unchanged)
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)
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)
0x1A 0x1B Delete Message Current (unchanged)
0x1B 0x1C Disconnect (play) Current (unchanged)
0x1C 0x1D Disguised Chat Message Current (unchanged)
0x1D 0x1E Entity Event Current (unchanged)
0x1E 0x1F Explosion Current (unchanged)
0x1F 0x20 Unload Chunk Current (unchanged)
0x20 0x21 Game Event Current (unchanged)
0x21 0x22 Open Horse Screen Current (unchanged)
0x22 0x23 Hurt Animation Current (unchanged)
0x23 0x24 Initialize World Border Current (unchanged)
0x24 0x25 Clientbound Keep Alive (play) Current (unchanged)
0x25 0x26 Chunk Data and Update Light Current (unchanged)
0x26 0x27 World Event Current (unchanged)
0x27 0x28 Particle Current (unchanged)
0x28 0x29 Update Light Current (unchanged)
0x29 0x2A Login (play) Current (unchanged)
0x2A 0x2B Map Data Current (unchanged)
0x2B 0x2C Merchant Offers Current (unchanged)
0x2C 0x2D Update Entity Position Current (unchanged)
0x2D 0x2E Update Entity Position and Rotation Current (unchanged)
0x2E 0x2F Update Entity Rotation Current (unchanged)
0x2F 0x30 Move Vehicle Current (unchanged)
0x30 0x31 Open Book Current (unchanged)
0x31 0x32 Open Screen Current (unchanged)
0x32 0x33 Open Sign Editor Current (unchanged)
0x33 0x34 Ping (play) Current (unchanged)
0x34 0x35 Ping Response (play) Current (unchanged)
0x35 0x36 Place Ghost Recipe Current (unchanged)
0x36 0x37 Player Abilities Current (unchanged)
0x37 0x38 Player Chat Message Current (unchanged)
0x38 0x39 End Combat Current (unchanged)
0x39 0x3A Enter Combat Current (unchanged)
0x3A 0x3B Combat Death Current (unchanged)
0x3B 0x3C Player Info Remove Current (unchanged)
0x3C 0x3D Player Info Update Current (unchanged)
0x3D 0x3E Look At Current (unchanged)
0x3E 0x3F Synchronize Player Position Current (unchanged)
0x3F 0x40 Update Recipe Book Current (unchanged)
0x40 0x41 Remove Entities Current (unchanged)
0x41 0x42 Remove Entity Effect Current (unchanged)
0x42 0x43 Reset Score Current (unchanged)
0x43 0x44 Remove Resource Pack (play) Current (unchanged)
0x44 0x45 Add Resource Pack (play) Current (unchanged)
0x45 0x46 Respawn Current (unchanged)
0x46 0x47 Set Head Rotation Current (unchanged)
0x47 0x48 Update Section Blocks Current (unchanged)
0x48 0x49 Select Advancements Tab Current (unchanged)
0x49 0x4A Server Data Current (unchanged)
0x4A 0x4B Set Action Bar Text Current (unchanged)
0x4B 0x4C Set Border Center Current (unchanged)
0x4C 0x4D Set Border Lerp Size Current (unchanged)
0x4D 0x4E Set Border Size Current (unchanged)
0x4E 0x4F Set Border Warning Delay Current (unchanged)
0x4F 0x50 Set Border Warning Distance Current (unchanged)
0x50 0x51 Set Camera Current (unchanged)
0x51 0x52 Set Held Item Current (unchanged)
0x52 0x53 Set Center Chunk Current (unchanged)
0x53 0x54 Set Render Distance Current (unchanged)
0x54 0x55 Set Default Spawn Position Current (unchanged)
0x55 0x56 Display Objective Current (unchanged)
0x56 0x57 Set Entity Metadata Current (unchanged)
0x57 0x58 Link Entities Current (unchanged)
0x58 0x59 Set Entity Velocity Current (unchanged)
0x59 0x5A Set Equipment Current (unchanged)
0x5A 0x5B Set Experience Current (unchanged)
0x5B 0x5C Set Health Current (unchanged)
0x5C 0x5D Update Objectives Current (unchanged)
0x5D 0x5E Set Passengers Current (unchanged)
0x5E 0x5F Update Teams Current (unchanged)
0x5F 0x60 Update Score Current (unchanged)
0x60 0x61 Set Simulation Distance Current (unchanged)
0x61 0x62 Set Subtitle Text Current (unchanged)
0x62 0x63 Update Time Current (unchanged)
0x63 0x64 Set Title Text Current (unchanged)
0x64 0x65 Set Title Animation Times Current (unchanged)
0x65 0x66 Entity Sound Effect Current (unchanged)
0x66 0x67 Sound Effect Current (unchanged)
0x67 0x68 Start Configuration Current (unchanged)
0x68 0x69 Stop Sound Current (unchanged)
0x6A Store Cookie (Play) Pre
0x69 0x6B System Chat Message Current (unchanged)
0x6A 0x6C Set Tab List Header And Footer Current (unchanged)
0x6B 0x6D Tag Query Response Current (unchanged)
0x6C 0x6E Pickup Item Current (unchanged)
0x6D 0x6F Teleport Entity Current (unchanged)
0x6E 0x70 Set Ticking State Current (unchanged)
0x6F 0x71 Step Tick Current (unchanged)
0x72 Transfer (Play) Pre
0x70 0x73 Update Advancements Current (unchanged)
0x71 0x74 Update Attributes Current Pre
0x72 0x75 Entity Effect Current Pre
0x73 0x76 Update Recipes Current (unchanged)
0x74 0x77 Update Tags (play) Current (unchanged)
Play serverbound
0x10 Cookie Response (play) Pre
0x10 0x11 Serverbound Plugin Message (play) Current (unchanged)
0x11 0x12 Edit Book Current (unchanged)
0x12 0x13 Query Entity Tag Current (unchanged)
0x13 0x14 Interact Current (unchanged)
0x14 0x15 Jigsaw Generate Current (unchanged)
0x15 0x16 Serverbound Keep Alive (play) Current (unchanged)
0x16 0x17 Lock Difficulty Current (unchanged)
0x17 0x18 Set Player Position Current (unchanged)
0x18 0x19 Set Player Position and Rotation Current (unchanged)
0x19 0x1A Set Player Rotation Current (unchanged)
0x1A 0x1B Set Player On Ground Current (unchanged)
0x1B 0x1C Move Vehicle Current (unchanged)
0x1C 0x1D Paddle Boat Current (unchanged)
0x1D 0x1E Pick Item Current (unchanged)
0x1E 0x1F Ping Request (play) Current (unchanged)
0x1F 0x20 Place Recipe Current (unchanged)
0x20 0x21 Player Abilities Current (unchanged)
0x21 0x22 Player Action Current (unchanged)
0x22 0x23 Player Command Current (unchanged)
0x23 0x24 Player Input Current (unchanged)
0x24 0x25 Pong (play) Current (unchanged)
0x25 0x26 Change Recipe Book Settings Current (unchanged)
0x26 0x27 Set Seen Recipe Current (unchanged)
0x27 0x28 Rename Item Current (unchanged)
0x28 0x29 Resource Pack Response (play) Current (unchanged)
0x29 0x2A Seen Advancements Current (unchanged)
0x2A 0x2B Select Trade Current (unchanged)
0x2B 0x2C Set Beacon Effect Current (unchanged)
0x2C 0x2D Set Held Item Current (unchanged)
0x2D 0x2E Program Command Block Current (unchanged)
0x2E 0x2F Program Command Block Minecart Current (unchanged)
0x2F 0x30 Set Creative Mode Slot Current (unchanged)
0x30 0x31 Program Jigsaw Block Current (unchanged)
0x31 0x32 Program Structure Block Current (unchanged)
0x32 0x33 Update Sign Current (unchanged)
0x33 0x34 Swing Arm Current (unchanged)
0x34 0x35 Teleport To Entity Current (unchanged)
0x35 0x36 Use Item On Current (unchanged)
0x36 0x37 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 Villager Data (VarInt, VarInt, VarInt) villager type, villager profession, level (See below.)
19 Optional VarInt VarInt 0 for absent; 1 + actual value otherwise. Used for entity IDs.
20 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 Cat Variant VarInt An ID in the minecraft:cat_variant registry.
22 Frog Variant VarInt An ID in the minecraft:frog_variant registry.
23 Optional Global Position (Boolean, Optional Identifier, Optional Position) dimension identifier, position; only if the Boolean is set to true.
24 Painting Variant VarInt An ID in the minecraft:painting_variant registry.
25 Sniffer State VarInt Enum IDLING = 0, FEELING_HAPPY = 1, SCENTING = 2, SNIFFING = 3, SEARCHING = 4, DIGGING = 5, RISING = 6
26 Armadillo State VarInt Enum IDLE = 0, ROLLING = 1, SCARED = 2
26 27 Vector3 (Float, Float, Float) x, y, z
27 28 Quaternion (Float, Float, Float, Float) x, y, z, w

Armadillo

Extends Animal.

Index Type Meaning Default
17 Armadillo State (26) 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

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 Optional ByteArray(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.

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
0x09 Configuration Client Key Identifier The identifier of the cookie.
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
0x0A Configuration Client Host String The hostname of IP of the server.
Port VarInt The port of the server.

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 Optional ByteArray(5120) The data of the cookie, if any.

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.

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
0x6A Play Client Key Identifier The identifier of the cookie.
Payload ByteArray(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
0x72 Play Client Host String The hostname of IP of the server.
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):

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
Huh.png 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

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
0x6A 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 Optional ByteArray(5120) The data of the cookie, if any.