Difference between revisions of "Pre-release protocol"

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(1.13 -- let's keep this on pre-release protocol for the moment though)
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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.
 
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 ===
 
=== 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 ===
 
=== Packets ===
Line 23: Line 18:
 
  !colspan="2"| Documentation
 
  !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
 
  ! 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"
 
{| class="wikitable"
Line 688: Line 331:
 
  !style="width: 250px;" colspan="2"| Meaning
 
  !style="width: 250px;" colspan="2"| Meaning
 
  ! Default
 
  ! 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
 
  | 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
 
  | 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
 
  ! Index
 
  ! Type
 
  ! Type
Line 765: Line 362:
 
  ! Default
 
  ! 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 ==
 
== 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
 
  ! 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 ===
 
=== Clientbound ===
  
==== Spawn Painting ====
+
==== Encryption Request ====
 
 
This packet shows location, name, and type of painting.
 
  
 
{| class="wikitable"
 
{| class="wikitable"
Line 1,074: Line 440:
 
  ! Notes
 
  ! 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
 
  ! Packet ID
 
  ! State
 
  ! State
  ! Bound To  
+
  ! Bound To
  !colspan="2"| Field Name
+
  ! colspan="2"| Field Name
  !colspan="2"| Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! 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
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! 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
 
  ! Packet ID
 
  ! State
 
  ! State
Line 1,651: Line 556:
 
  ! Notes
 
  ! 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"
 
{| class="wikitable"
Line 1,673: Line 570:
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  !colspan="2"| Field Name
+
  ! colspan="2"| Field Name
  !colspan="2"| Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! 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
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  !colspan="2"| Field Name
+
  ! colspan="2"| Field Name
  !colspan="2"| Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! 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
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! 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
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! 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
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! 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
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! 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
 
  ! Packet ID
 
  ! State
 
  ! State
Line 2,000: Line 759:
 
  ! Notes
 
  ! 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"
 
{| class="wikitable"
Line 2,056: Line 781:
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  !colspan="2"| Field Name
+
  ! Field Name
  !colspan="2"| Field Type
+
  ! Field Type
 
  ! Notes
 
  ! 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"
 
{| class="wikitable"
Line 2,257: Line 887:
 
  ! Notes
 
  ! 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
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! 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
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  !colspan="2"| Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! 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"
 
{| class="wikitable"
Line 2,542: Line 1,003:
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! 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"
 
{| 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"
 
{| 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 Name
 
  ! Field Type
 
  ! Field Type
 
  ! Notes
 
  ! 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"
 
{| class="wikitable"
Line 2,911: Line 1,216:
 
  ! Notes
 
  ! 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
 
  | Entity ID
 
  | VarInt
 
  | 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
 
  | 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
 
  | 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
 
  | 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
 
  | 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
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! 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
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! 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
 
  | 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
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! 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
 
  ! Packet ID
 
  ! State
 
  ! State
Line 3,434: Line 1,430:
 
  ! Notes
 
  ! 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]]
 
[[Category:Minecraft Modern]]

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.

Contents

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.
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.
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.
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
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

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.
Signature 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.
Signature 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).