Difference between revisions of "Pre-release protocol"

From wiki.vg
Jump to navigation Jump to search
m (We have a data types section, move slot there)
(→‎Entity Metadata: Merge changes from stable docs to incorporate new metadata type templates. Fix my earlier mistake on Pose in the process.)
 
(707 intermediate revisions by 46 users not shown)
Line 1: Line 1:
This page documents the changes from the [[Protocol|last stable Minecraft release]] (currently [[Protocol version numbers|1.12.2, protocol 340]]) to the current pre-release (currently [[Protocol version numbers|17w49b, protocol 350]]). Note that this page contains bleeding-edge information that may not be completely or correctly documented.
+
This page documents the changes from the [[Protocol|last stable Minecraft release]] (currently [[Protocol version numbers|1.20.4, protocol 765]]) to the current pre-release (currently [[Protocol version numbers|24w03b, protocol {{Snapshot PVN|1073741996}}]]). Note that this page contains bleeding-edge information that may not be completely or correctly documented.
  
 
One who wishes to commandeer the merging of this into [[Protocol]] when an update is made must be sure to respect any changes that may have occurred to the respective packets there.
 
One who wishes to commandeer the merging of this into [[Protocol]] when an update is made must be sure to respect any changes that may have occurred to the respective packets there.
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/17w48a.html burger].}}
 
  
 
=== Packets ===
 
=== Packets ===
Line 21: Line 18:
 
  !colspan="2"| Documentation
 
  !colspan="2"| Documentation
 
  |-
 
  |-
!colspan="4"| Handshaking serverbound
+
!colspan="4"| Handshake serverbound
{{PacketList|0x00|Handshake}}
+
{{PacketList|0x00|Handshake}}
 +
|-
 +
!colspan="4"| Login clientbound
 +
{{PacketList|0x05|Cookie Request (login)|rel=added}}
 
  |-
 
  |-
!colspan="4"| Play clientbound
+
!colspan="4"| Login serverbound
{{PacketList|0x07|Statistics}}
+
{{PacketList|0x04|Cookie Response (login)|rel=added}}
{{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)|pre=unchanged}}
 
{{PacketList|{{change|0x19|0x1A}}|Named Sound Effect}}
 
{{PacketList|{{change|0x1A|0x1B}}|Disconnect (play)|pre=unchanged}}
 
{{PacketList|{{change|0x1B|0x1C}}|Entity Status|pre=unchanged}}
 
{{PacketList|{{change|0x1C|0x1D}}|Explosion|pre=unchanged}}
 
{{PacketList|{{change|0x1D|0x1E}}|Unload Chunk|pre=unchanged}}
 
{{PacketList|{{change|0x1E|0x1F}}|Change Game State|pre=unchanged}}
 
{{PacketList|{{change|0x1F|0x20}}|Keep Alive (clientbound)|pre=unchanged}}
 
{{PacketList|{{change|0x20|0x21}}|Chunk Data}}
 
{{PacketList|{{change|0x21|0x22}}|Effect|pre=unchanged}}
 
{{PacketList|{{change|0x22|0x23}}|Particle}}
 
{{PacketList|{{change|0x23|0x24}}|Join Game|pre=unchanged}}
 
{{PacketList|{{change|0x24|0x25}}|Map|pre=unchanged}}
 
{{PacketList|{{change|0x25|0x26}}|Entity|pre=unchanged}}
 
{{PacketList|{{change|0x26|0x27}}|Entity Relative Move|pre=unchanged}}
 
{{PacketList|{{change|0x27|0x28}}|Entity Look And Relative Move|pre=unchanged}}
 
{{PacketList|{{change|0x28|0x29}}|Entity Look|pre=unchanged}}
 
{{PacketList|{{change|0x29|0x2A}}|Vehicle Move (clientbound)|pre=unchanged}}
 
{{PacketList|{{change|0x2A|0x2B}}|Open Sign Editor|pre=unchanged}}
 
{{PacketList|{{change|0x2B|0x2C}}|Craft Recipe Response}}
 
{{PacketList|{{change|0x2C|0x2D}}|Player Abilities (clientbound)|pre=unchanged}}
 
{{PacketList|{{change|0x2D|0x2E}}|Combat Event|pre=unchanged}}
 
{{PacketList|{{change|0x2E|0x2F}}|Player List Item|pre=unchanged}}
 
{{PacketList|{{change|0x2F|0x30}}|Player Position And Look (clientbound)|pre=unchanged}}
 
{{PacketList|{{change|0x30|0x31}}|Use Bed|pre=unchanged}}
 
{{PacketList|{{change|0x31|0x32}}|Unlock Recipes}}
 
{{PacketList|{{change|0x32|0x33}}|Destroy Entities|pre=unchanged}}
 
{{PacketList|{{change|0x33|0x34}}|Remove Entity Effect|pre=unchanged}}
 
{{PacketList|{{change|0x34|0x35}}|Resource Pack Send|pre=unchanged}}
 
{{PacketList|{{change|0x35|0x36}}|Respawn|pre=unchanged}}
 
{{PacketList|{{change|0x36|0x37}}|Entity Head Look|pre=unchanged}}
 
{{PacketList|{{change|0x37|0x38}}|Select Advancement Tab|pre=unchanged}}
 
{{PacketList|{{change|0x38|0x39}}|World Border|pre=unchanged}}
 
{{PacketList|{{change|0x39|0x3A}}|Camera|pre=unchanged}}
 
{{PacketList|{{change|0x3A|0x3B}}|Held Item Change (clientbound)|pre=unchanged}}
 
{{PacketList|{{change|0x3B|0x3C}}|Display Scoreboard|pre=unchanged}}
 
{{PacketList|{{change|0x3C|0x3D}}|Entity Metadata|pre=unchanged}}
 
{{PacketList|{{change|0x3D|0x3E}}|Attach Entity|pre=unchanged}}
 
{{PacketList|{{change|0x3E|0x3F}}|Entity Velocity|pre=unchanged}}
 
{{PacketList|{{change|0x3F|0x40}}|Entity Equipment|pre=unchanged}}
 
{{PacketList|{{change|0x40|0x41}}|Set Experience|pre=unchanged}}
 
{{PacketList|{{change|0x41|0x42}}|Update Health|pre=unchanged}}
 
{{PacketList|{{change|0x42|0x43}}|Scoreboard Objective}}
 
{{PacketList|{{change|0x43|0x44}}|Set Passengers|pre=unchanged}}
 
{{PacketList|{{change|0x44|0x45}}|Teams|pre=unchanged}}
 
{{PacketList|{{change|0x45|0x46}}|Update Score|pre=unchanged}}
 
{{PacketList|{{change|0x46|0x47}}|Spawn Position|pre=unchanged}}
 
{{PacketList|{{change|0x47|0x48}}|Time Update|pre=unchanged}}
 
{{PacketList|{{change|0x48|0x49}}|Title|pre=unchanged}}
 
{{PacketList|0x4A|Stop Sound|rel=added}}
 
{{PacketList|{{change|0x49|0x4B}}|Sound Effect|pre=unchanged}}
 
{{PacketList|{{change|0x4A|0x4C}}|Player List Header And Footer|pre=unchanged}}
 
{{PacketList|{{change|0x4B|0x4D}}|Collect Item|pre=unchanged}}
 
{{PacketList|{{change|0x4C|0x4E}}|Entity Teleport|pre=unchanged}}
 
{{PacketList|{{change|0x4D|0x4F}}|Advancements|pre=unchanged}}
 
{{PacketList|{{change|0x4E|0x50}}|Entity Properties|pre=unchanged}}
 
{{PacketList|{{change|0x4F|0x51}}|Entity Effect|pre=unchanged}}
 
{{PacketList|0x52|Declare Recipes|rel=added}}
 
{{PacketList|0x53|Tags|rel=added}}
 
 
  |-
 
  |-
!colspan="4"| Play serverbound
+
!colspan="4"| Configuration clientbound
{{PacketList|{{change|0x02|0x01}}|Chat Message (serverbound)|pre=unchanged}}
+
{{PacketList|0x00|Cookie Request (configuration)|rel=added}}
{{PacketList|{{change|0x03|0x02}}|Client Status|pre=unchanged}}
+
{{PacketList|{{change|0x00|0x01}}|Clientbound Plugin Message (configuration)|pre=unchanged}}
{{PacketList|{{change|0x04|0x03}}|Client Settings|pre=unchanged}}
+
{{PacketList|{{change|0x01|0x02}}|Disconnect (configuration)|pre=unchanged}}
{{PacketList|{{change|0x01|0x04}}|Tab-Complete (serverbound)}}
+
{{PacketList|{{change|0x02|0x03}}|Finish Configuration|pre=unchanged}}
{{PacketList|0x12|Craft Recipe Request}}
+
{{PacketList|{{change|0x03|0x04}}|Clientbound Keep Alive (configuration)|pre=unchanged}}
  |}
+
{{PacketList|{{change|0x04|0x05}}|Ping (configuration)|pre=unchanged}}
 +
{{PacketList|{{change|0x05|0x06}}|Registry Data|pre=unchanged}}
 +
{{PacketList|{{change|0x06|0x07}}|Remove Resource Pack (configuration)|pre=unchanged}}
 +
{{PacketList|{{change|0x07|0x08}}|Add Resource Pack (configuration)|pre=unchanged}}
 +
{{PacketList|0x09|Store Cookie (configuration)|rel=added}}
 +
{{PacketList|0x0A|Transfer (configuration)|rel=added}}
 +
{{PacketList|{{change|0x08|0x0B}}|Feature Flags|pre=unchanged}}
 +
  {{PacketList|{{change|0x09|0x0C}}|Update Tags (configuration)|pre=unchanged}}
  
== New/modified data types ==
 
 
=== [[Slot]] ===
 
 
{| class="wikitable"
 
! Name
 
! Type
 
! Meaning
 
 
  |-
 
  |-
  | {{Change|Block ID|Item ID}}
+
  !colspan="4"| Configuration serverbound
  | Short
+
{{PacketList|0x01|Cookie Response (configuration)|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.}}
+
  {{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}}
 +
{{PacketList|{{change|0x04|0x05}}|Pong (configuration)|pre=unchanged}}
 +
{{PacketList|{{change|0x05|0x06}}|Resource Pack Response (configuration)|pre=unchanged}}
 
  |-
 
  |-
  | Item Count
+
  !colspan="4"| Play clientbound
  | Optional Byte
+
{{PacketList|0x16|Cookie Request (Play)|rel=added}}
  | Not present if Block ID is <code>-1</code>.
+
{{PacketList|{{change|0x16|0x17}}|Set Cooldown|pre=unchanged}}
  |- style="background-color: #f4cccc; text-decoration: line-through;"
+
{{PacketList|{{change|0x17|0x18}}|Chat Suggestions|pre=unchanged}}
  | Item Damage
+
{{PacketList|{{change|0x18|0x19}}|Clientbound Plugin Message (play)|pre=unchanged}}
  | Optional Short
+
{{PacketList|{{change|0x19|0x1A}}|Damage Event|pre=unchanged}}
  | Not present if Block ID is <code>-1</code>.
+
{{PacketList|{{change|0x1A|0x1B}}|Delete Message|pre=unchanged}}
 +
{{PacketList|{{change|0x1B|0x1C}}|Disconnect (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x1C|0x1D}}|Disguised Chat Message|pre=unchanged}}
 +
{{PacketList|{{change|0x1D|0x1E}}|Entity Event|pre=unchanged}}
 +
{{PacketList|{{change|0x1E|0x1F}}|Explosion|pre=unchanged}}
 +
{{PacketList|{{change|0x1F|0x20}}|Unload Chunk|pre=unchanged}}
 +
{{PacketList|{{change|0x20|0x21}}|Game Event|pre=unchanged}}
 +
{{PacketList|{{change|0x21|0x22}}|Open Horse Screen|pre=unchanged}}
 +
{{PacketList|{{change|0x22|0x23}}|Hurt Animation|pre=unchanged}}
 +
{{PacketList|{{change|0x23|0x24}}|Initialize World Border|pre=unchanged}}
 +
{{PacketList|{{change|0x24|0x25}}|Clientbound Keep Alive (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x25|0x26}}|Chunk Data and Update Light|pre=unchanged}}
 +
{{PacketList|{{change|0x26|0x27}}|World Event|pre=unchanged}}
 +
{{PacketList|{{change|0x27|0x28}}|Particle|pre=unchanged}}
 +
{{PacketList|{{change|0x28|0x29}}|Update Light|pre=unchanged}}
 +
{{PacketList|{{change|0x29|0x2A}}|Login (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x2A|0x2B}}|Map Data|pre=unchanged}}
 +
{{PacketList|{{change|0x2B|0x2C}}|Merchant Offers|pre=unchanged}}
 +
{{PacketList|{{change|0x2C|0x2D}}|Update Entity Position|pre=unchanged}}
 +
{{PacketList|{{change|0x2D|0x2E}}|Update Entity Position and Rotation|pre=unchanged}}
 +
{{PacketList|{{change|0x2E|0x2F}}|Update Entity Rotation|pre=unchanged}}
 +
{{PacketList|{{change|0x2F|0x30}}|Move Vehicle|pre=unchanged}}
 +
{{PacketList|{{change|0x30|0x31}}|Open Book|pre=unchanged}}
 +
{{PacketList|{{change|0x31|0x32}}|Open Screen|pre=unchanged}}
 +
{{PacketList|{{change|0x32|0x33}}|Open Sign Editor|pre=unchanged}}
 +
{{PacketList|{{change|0x33|0x34}}|Ping (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x34|0x35}}|Ping Response (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x35|0x36}}|Place Ghost Recipe|pre=unchanged}}
 +
{{PacketList|{{change|0x36|0x37}}|Player Abilities|pre=unchanged}}
 +
{{PacketList|{{change|0x37|0x38}}|Player Chat Message|pre=unchanged}}
 +
{{PacketList|{{change|0x38|0x39}}|End Combat|pre=unchanged}}
 +
{{PacketList|{{change|0x39|0x3A}}|Enter Combat|pre=unchanged}}
 +
{{PacketList|{{change|0x3A|0x3B}}|Combat Death|pre=unchanged}}
 +
{{PacketList|{{change|0x3B|0x3C}}|Player Info Remove|pre=unchanged}}
 +
{{PacketList|{{change|0x3C|0x3D}}|Player Info Update|pre=unchanged}}
 +
{{PacketList|{{change|0x3D|0x3E}}|Look At|pre=unchanged}}
 +
{{PacketList|{{change|0x3E|0x3F}}|Synchronize Player Position|pre=unchanged}}
 +
{{PacketList|{{change|0x3F|0x40}}|Update Recipe Book|pre=unchanged}}
 +
{{PacketList|{{change|0x40|0x41}}|Remove Entities|pre=unchanged}}
 +
{{PacketList|{{change|0x41|0x42}}|Remove Entity Effect|pre=unchanged}}
 +
{{PacketList|{{change|0x42|0x43}}|Reset Score|pre=unchanged}}
 +
{{PacketList|{{change|0x43|0x44}}|Remove Resource Pack (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x44|0x45}}|Add Resource Pack (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x45|0x46}}|Respawn|pre=unchanged}}
 +
{{PacketList|{{change|0x46|0x47}}|Set Head Rotation|pre=unchanged}}
 +
{{PacketList|{{change|0x47|0x48}}|Update Section Blocks|pre=unchanged}}
 +
{{PacketList|{{change|0x48|0x49}}|Select Advancements Tab|pre=unchanged}}
 +
{{PacketList|{{change|0x49|0x4A}}|Server Data|pre=unchanged}}
 +
{{PacketList|{{change|0x4A|0x4B}}|Set Action Bar Text|pre=unchanged}}
 +
{{PacketList|{{change|0x4B|0x4C}}|Set Border Center|pre=unchanged}}
 +
{{PacketList|{{change|0x4C|0x4D}}|Set Border Lerp Size|pre=unchanged}}
 +
{{PacketList|{{change|0x4D|0x4E}}|Set Border Size|pre=unchanged}}
 +
{{PacketList|{{change|0x4E|0x4F}}|Set Border Warning Delay|pre=unchanged}}
 +
{{PacketList|{{change|0x4F|0x50}}|Set Border Warning Distance|pre=unchanged}}
 +
{{PacketList|{{change|0x50|0x51}}|Set Camera|pre=unchanged}}
 +
{{PacketList|{{change|0x51|0x52}}|Set Held Item|pre=unchanged}}
 +
{{PacketList|{{change|0x52|0x53}}|Set Center Chunk|pre=unchanged}}
 +
{{PacketList|{{change|0x53|0x54}}|Set Render Distance|pre=unchanged}}
 +
  {{PacketList|{{change|0x54|0x55}}|Set Default Spawn Position|pre=unchanged}}
 +
  {{PacketList|{{change|0x55|0x56}}|Display Objective|pre=unchanged}}
 +
  {{PacketList|{{change|0x56|0x57}}|Set Entity Metadata|pre=unchanged}}
 +
{{PacketList|{{change|0x57|0x58}}|Link Entities|pre=unchanged}}
 +
{{PacketList|{{change|0x58|0x59}}|Set Entity Velocity|pre=unchanged}}
 +
{{PacketList|{{change|0x59|0x5A}}|Set Equipment|pre=unchanged}}
 +
{{PacketList|{{change|0x5A|0x5B}}|Set Experience|pre=unchanged}}
 +
{{PacketList|{{change|0x5B|0x5C}}|Set Health|pre=unchanged}}
 +
{{PacketList|{{change|0x5C|0x5D}}|Update Objectives|pre=unchanged}}
 +
{{PacketList|{{change|0x5D|0x5E}}|Set Passengers|pre=unchanged}}
 +
{{PacketList|{{change|0x5E|0x5F}}|Update Teams|pre=unchanged}}
 +
{{PacketList|{{change|0x5F|0x60}}|Update Score|pre=unchanged}}
 +
{{PacketList|{{change|0x60|0x61}}|Set Simulation Distance|pre=unchanged}}
 +
{{PacketList|{{change|0x61|0x62}}|Set Subtitle Text|pre=unchanged}}
 +
{{PacketList|{{change|0x62|0x63}}|Update Time|pre=unchanged}}
 +
{{PacketList|{{change|0x63|0x64}}|Set Title Text|pre=unchanged}}
 +
{{PacketList|{{change|0x64|0x65}}|Set Title Animation Times|pre=unchanged}}
 +
{{PacketList|{{change|0x65|0x66}}|Entity Sound Effect|pre=unchanged}}
 +
{{PacketList|{{change|0x66|0x67}}|Sound Effect|pre=unchanged}}
 +
{{PacketList|{{change|0x67|0x68}}|Start Configuration|pre=unchanged}}
 +
{{PacketList|{{change|0x68|0x69}}|Stop Sound|pre=unchanged}}
 +
{{PacketList|0x6A|Store Cookie (Play)|rel=added}}
 +
{{PacketList|{{change|0x69|0x6B}}|System Chat Message|pre=unchanged}}
 +
{{PacketList|{{change|0x6A|0x6C}}|Set Tab List Header And Footer|pre=unchanged}}
 +
{{PacketList|{{change|0x6B|0x6D}}|Tag Query Response|pre=unchanged}}
 +
  {{PacketList|{{change|0x6C|0x6E}}|Pickup Item|pre=unchanged}}
 +
{{PacketList|{{change|0x6D|0x6F}}|Teleport Entity|pre=unchanged}}
 +
{{PacketList|{{change|0x6E|0x70}}|Set Ticking State|pre=unchanged}}
 +
{{PacketList|{{change|0x6F|0x71}}|Step Tick|pre=unchanged}}
 +
{{PacketList|0x72|Transfer (Play)|rel=added}}
 +
{{PacketList|{{change|0x70|0x73}}|Update Advancements|pre=unchanged}}
 +
{{PacketList|{{change|0x71|0x74}}|Update Attributes}}
 +
{{PacketList|{{change|0x72|0x75}}|Entity Effect}}
 +
  {{PacketList|{{change|0x73|0x76}}|Update Recipes|pre=unchanged}}
 +
  {{PacketList|{{change|0x74|0x77}}|Update Tags (play)|pre=unchanged}}
 
  |-
 
  |-
  | NBT
+
  !colspan="4"| Play serverbound
  | Optional NBT
+
  {{PacketList|0x10|Cookie Response (play)|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|0x10|0x11}}|Serverbound Plugin Message (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x11|0x12}}|Edit Book|pre=unchanged}}
 +
{{PacketList|{{change|0x12|0x13}}|Query Entity Tag|pre=unchanged}}
 +
{{PacketList|{{change|0x13|0x14}}|Interact|pre=unchanged}}
 +
{{PacketList|{{change|0x14|0x15}}|Jigsaw Generate|pre=unchanged}}
 +
{{PacketList|{{change|0x15|0x16}}|Serverbound Keep Alive (play)|pre=unchanged}}
 +
  {{PacketList|{{change|0x16|0x17}}|Lock Difficulty|pre=unchanged}}
 +
{{PacketList|{{change|0x17|0x18}}|Set Player Position|pre=unchanged}}
 +
{{PacketList|{{change|0x18|0x19}}|Set Player Position and Rotation|pre=unchanged}}
 +
{{PacketList|{{change|0x19|0x1A}}|Set Player Rotation|pre=unchanged}}
 +
{{PacketList|{{change|0x1A|0x1B}}|Set Player On Ground|pre=unchanged}}
 +
{{PacketList|{{change|0x1B|0x1C}}|Move Vehicle|pre=unchanged}}
 +
{{PacketList|{{change|0x1C|0x1D}}|Paddle Boat|pre=unchanged}}
 +
{{PacketList|{{change|0x1D|0x1E}}|Pick Item|pre=unchanged}}
 +
{{PacketList|{{change|0x1E|0x1F}}|Ping Request (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x1F|0x20}}|Place Recipe|pre=unchanged}}
 +
{{PacketList|{{change|0x20|0x21}}|Player Abilities|pre=unchanged}}
 +
{{PacketList|{{change|0x21|0x22}}|Player Action|pre=unchanged}}
 +
{{PacketList|{{change|0x22|0x23}}|Player Command|pre=unchanged}}
 +
{{PacketList|{{change|0x23|0x24}}|Player Input|pre=unchanged}}
 +
{{PacketList|{{change|0x24|0x25}}|Pong (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x25|0x26}}|Change Recipe Book Settings|pre=unchanged}}
 +
{{PacketList|{{change|0x26|0x27}}|Set Seen Recipe|pre=unchanged}}
 +
{{PacketList|{{change|0x27|0x28}}|Rename Item|pre=unchanged}}
 +
{{PacketList|{{change|0x28|0x29}}|Resource Pack Response (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x29|0x2A}}|Seen Advancements|pre=unchanged}}
 +
{{PacketList|{{change|0x2A|0x2B}}|Select Trade|pre=unchanged}}
 +
{{PacketList|{{change|0x2B|0x2C}}|Set Beacon Effect|pre=unchanged}}
 +
{{PacketList|{{change|0x2C|0x2D}}|Set Held Item|pre=unchanged}}
 +
{{PacketList|{{change|0x2D|0x2E}}|Program Command Block|pre=unchanged}}
 +
{{PacketList|{{change|0x2E|0x2F}}|Program Command Block Minecart|pre=unchanged}}
 +
{{PacketList|{{change|0x2F|0x30}}|Set Creative Mode Slot|pre=unchanged}}
 +
{{PacketList|{{change|0x30|0x31}}|Program Jigsaw Block|pre=unchanged}}
 +
{{PacketList|{{change|0x31|0x32}}|Program Structure Block|pre=unchanged}}
 +
{{PacketList|{{change|0x32|0x33}}|Update Sign|pre=unchanged}}
 +
{{PacketList|{{change|0x33|0x34}}|Swing Arm|pre=unchanged}}
 +
{{PacketList|{{change|0x34|0x35}}|Teleport To Entity|pre=unchanged}}
 +
{{PacketList|{{change|0x35|0x36}}|Use Item On|pre=unchanged}}
 +
{{PacketList|{{change|0x36|0x37}}|Use Item|pre=unchanged}}
 
  |}
 
  |}
  
== Block Actions ==
+
== New/modified data types ==
  
No changes so far.  
+
No changes so far.
  
== Plugin Channels ==
+
== Entity Metadata ==
  
=== <code>MC|StopSound</code> ===
+
{{#vardefine: meta_prerelease | 1}}
  
{{Change|''Server to client''}}
+
{{Metadata type definition/begin}}
 +
! Value
 +
! Notes
 +
{{Metadata type definition|Byte}}
 +
| {{Type|Byte}}
 +
|
 +
{{Metadata type definition|VarInt}}
 +
| {{Type|VarInt}}
 +
|
 +
{{Metadata type definition|VarLong}}
 +
| {{Type|VarLong}}
 +
|
 +
{{Metadata type definition|Float}}
 +
| {{Type|Float}}
 +
|
 +
{{Metadata type definition|String}}
 +
| {{Type|String}}
 +
|
 +
{{Metadata type definition|Text Component}}
 +
| {{Type|Text Component}}
 +
|
 +
{{Metadata type definition|Optional Text Component}}
 +
| ({{Type|Boolean}}, {{Type|Optional}} {{Type|Text Component}})
 +
| Text Component is present if the Boolean is set to true.
 +
{{Metadata type definition|Slot}}
 +
| {{Type|Slot}}
 +
|
 +
{{Metadata type definition|Boolean}}
 +
| {{Type|Boolean}}
 +
|
 +
{{Metadata type definition|Rotations}}
 +
| ({{Type|Float}}, {{Type|Float}}, {{Type|Float}})
 +
| rotation on x, rotation on y, rotation on z
 +
{{Metadata type definition|Position}}
 +
| {{Type|Position}}
 +
|
 +
{{Metadata type definition|Optional Position}}
 +
| ({{Type|Boolean}}, {{Type|Optional}} {{Type|Position}})
 +
| Position is present if the Boolean is set to true.
 +
{{Metadata type definition|Direction}}
 +
| {{Type|VarInt}} {{Type|Enum}}
 +
| Down = 0, Up = 1, North = 2, South = 3, West = 4, East = 5
 +
{{Metadata type definition|Optional UUID}}
 +
| ({{Type|Boolean}}, {{Type|Optional}} {{Type|UUID}})
 +
| UUID is present if the Boolean is set to true.
 +
{{Metadata type definition|Block State}}
 +
| {{Type|VarInt}}
 +
| An ID in the block state registry.
 +
{{Metadata type definition|Optional Block State}}
 +
| {{Type|VarInt}}
 +
| 0 for absent (air is unrepresentable); otherwise, an ID in the block state registry.
 +
{{Metadata type definition|NBT}}
 +
| {{Type|NBT}}
 +
|
 +
{{Metadata type definition|Particle}}
 +
| ({{Type|VarInt}}, Varies)
 +
| particle type (an ID in the <code>minecraft:particle_type</code> registry), particle data (See [[Particles]].)
 +
{{Metadata type definition|Villager Data}}
 +
| ({{Type|VarInt}}, {{Type|VarInt}}, {{Type|VarInt}})
 +
| villager type, villager profession, level (See below.)
 +
{{Metadata type definition|Optional VarInt}}
 +
| {{Type|VarInt}}
 +
| 0 for absent; 1 + actual value otherwise. Used for entity IDs.
 +
{{Metadata type definition|Pose}}
 +
| {{Type|VarInt}} {{Type|Enum}}
 +
| STANDING = 0, FALL_FLYING = 1, SLEEPING = 2, SWIMMING = 3, SPIN_ATTACK = 4, SNEAKING = 5, LONG_JUMPING = 6, DYING = 7, CROAKING = 8, USING_TONGUE = 9, SITTING = 10, ROARING = 11, SNIFFING = 12, EMERGING = 13, DIGGING = 14{{change||2=, SLIDING = 15, SHOOTING = 16, INHALING = 17}}
 +
{{Metadata type definition|Cat Variant}}
 +
| {{Type|VarInt}}
 +
| An ID in the <code>minecraft:cat_variant</code> registry.
 +
{{Metadata type definition|Frog Variant}}
 +
| {{Type|VarInt}}
 +
| An ID in the <code>minecraft:frog_variant</code> registry.
 +
{{Metadata type definition|Optional Global Position}}
 +
| ({{Type|Boolean}}, {{Type|Optional}} {{Type|Identifier}}, {{Type|Optional}} {{Type|Position}})
 +
| dimension identifier, position; only if the Boolean is set to true.
 +
{{Metadata type definition|Painting Variant}}
 +
| {{Type|VarInt}}
 +
| An ID in the <code>minecraft:painting_variant</code> registry.
 +
{{Metadata type definition|Sniffer State}}
 +
| {{Type|VarInt}} {{Type|Enum}}
 +
| IDLING = 0, FEELING_HAPPY = 1, SCENTING = 2, SNIFFING = 3, SEARCHING = 4, DIGGING = 5, RISING = 6
 +
{{Metadata type definition|Armadillo State|rel=added}}
 +
| {{Type|VarInt}} {{Type|Enum}}
 +
| IDLE = 0, ROLLING = 1, SCARED = 2
 +
{{Metadata type definition|Vector3}}
 +
| ({{Type|Float}}, {{Type|Float}}, {{Type|Float}})
 +
| x, y, z
 +
{{Metadata type definition|Quaternion}}
 +
| ({{Type|Float}}, {{Type|Float}}, {{Type|Float}}, {{Type|Float}})
 +
| x, y, z, w
 +
|}
  
{{Change|Used to implement {{Minecraft Wiki|Commands#StopSound|the <code>/stopsound</code> command}}.  Stops a sound that is currently playing on the client.}}
+
=== Armadillo ===
  
{| class="wikitable" style="background-color: #f4cccc; text-decoration: line-through;"
+
{{Metadata inherit|Armadillo|inherits=Animal|start_at=17}}
  ! Field name
+
{| class="wikitable" {{added}}
! Field type
+
! Index
! Notes
+
! Type
 +
!style="width: 250px;" colspan="2"| Meaning
 +
  ! Default
 
  |-
 
  |-
  | Sound category
+
  | {{Metadata id|added}}
| String
+
  | {{Metadata type|Armadillo State}}
  | 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.
+
  |colspan="2"| Armadillo State
|-
+
  | IDLE
  | Sound name
 
| String
 
  | A [http://pokechu22.github.io/Burger/1.11.html#sounds sound effect name].  If left empty, ''all'' sounds are stopped.
 
 
  |}
 
  |}
  
{{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.}}
+
== Block Actions ==
 +
 
 +
No changes so far.
 +
 
 +
== Inventories ==
 +
 
 +
No changes so far.
  
{{Change||This plugin channel has been replaced by the [[#Stop sound|stop sound]] packet.}}
+
== Plugin Channels ==
  
== Play ==
+
No changes so far.
  
=== Clientbound ===
+
== Handshake ==
  
==== Block Change ====
+
=== Serverbound ===
  
Fired whenever a block is changed within the render distance.
+
==== Handshake ====
  
{{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.}}
+
This causes the server to switch into the target state.
  
 
{| class="wikitable"
 
{| class="wikitable"
Line 180: Line 337:
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="2"| 0x0B
+
  | rowspan="4"| 0x00
  |rowspan="2"| Play
+
  | rowspan="4"| Handshaking
  |rowspan="2"| Client
+
  | rowspan="4"| Server
  | Location
+
  | Protocol Version
  | Position
+
  | [[#Definitions:varint|VarInt]]
  | Block Coordinates
+
  | See [[protocol version numbers]] (currently 765 in Minecraft 1.20.4).
 
  |-
 
  |-
  | Block ID
+
  | Server Address
  | VarInt
+
  | [[#Definitions:string|String]] (255)
| 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.}}
+
  | 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.
|}
 
 
 
 
 
==== Statistics ====
 
 
 
Sent as a response to [[#Client_Status|Client Status]] (id 1).
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
!colspan="2"| Field Name
 
!colspan="2"| Field Type
 
! Notes
 
 
  |-
 
  |-
  |rowspan="6"| 0x07
+
  | Server Port
|rowspan="6"| Play
+
  | [[#Definitions:unsigned-short|Unsigned Short]]
|rowspan="6"| Client
+
  | Default is 25565. The Notchian server does not use this information.
|colspan="2"| Count
 
  |colspan="2"| VarInt
 
  | Number of elements in the following array
 
 
  |-
 
  |-
  |rowspan="4"| Statistic
+
  | Next State
  |style="background-color: #f4cccc; text-decoration: line-through;"| Name
+
  | [[#Definitions:varint|VarInt]] [[#Definitions:enum|Enum]]
|rowspan="4"| Array
+
  | 1 for [[#Status|Status]], 2 for [[#Login|Login]]{{change||, 3 for [[#Login|Transfer]]}}.
|style="background-color: #f4cccc; text-decoration: line-through;"| String (32767)
 
  |style="background-color: #f4cccc; text-decoration: line-through;"| [https://gist.github.com/Alvin-LB/8d0d13db00b3c00fd0e822a562025eff https://gist.github.com/Alvin-LB/8d0d13db00b3c00fd0e822a562025eff]
 
|- style="background-color: #d9ead3;"
 
| Unknown 1
 
| VarInt
 
|
 
|- style="background-color: #d9ead3;"
 
| Unknown 2
 
| VarInt
 
|
 
|-
 
| Value
 
| VarInt
 
| The amount to set it to
 
 
  |}
 
  |}
  
==== Multi Block Change ====
+
== Status ==
  
Fired whenever 2 or more blocks are changed within the same chunk on the same tick.
+
=== Clientbound ===
  
{{Warning|Changing blocks in chunks not loaded by the client is unsafe (see note on [[#Block Change|Block Change]]).}}
+
No changes so far.
  
{| class="wikitable"
+
=== Serverbound ===
! Packet ID
 
! State
 
! Bound To
 
!colspan="2"| Field Name
 
!colspan="2"| Field Type
 
! Notes
 
|-
 
|rowspan="6"| {{Change|0x10|0x0F}}
 
|rowspan="6"| Play
 
|rowspan="6"| Client
 
|colspan="2"| Chunk X
 
|colspan="2"| Int
 
| Chunk X coordinate
 
|-
 
|colspan="2"| Chunk Z
 
|colspan="2"| Int
 
| Chunk Z coordinate
 
|-
 
|colspan="2"| Record Count
 
|colspan="2"| VarInt
 
| Number of elements in the following array, i.e. the number of blocks affected
 
|-
 
|rowspan="3"| Record
 
| Horizontal Position
 
|rowspan="3"| Array
 
| Unsigned Byte
 
| 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.
 
|-
 
| Y Coordinate
 
| Unsigned Byte
 
| Y coordinate of the block
 
|-
 
| 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.}}
 
|}
 
  
To decode the position into a world position:
+
No changes so far.
  
<syntaxhighlight lang="java">
+
== Login ==
worldX = (horizPos >> 4 & 15) + (chunkX * 16);
 
worldY = vertPos;
 
worldZ = (horizPos & 15) + (chunkZ * 16);
 
</syntaxhighlight>
 
  
 +
=== Clientbound ===
  
==== Tab-Complete (clientbound) ====
+
==== Cookie Request (login) ====
 
 
{{Need Info|This is most definitely no longer an accurate description of this packet}}
 
  
The server responds with a list of auto-completions of the last word sent to it. In the case of regular chat, this is a player username. Command names and parameters are also supported. The client sorts these alphabetically before listing them.
+
Requests a cookie that was previously stored.
  
{| class="wikitable"
+
{| class="wikitable" {{added}}
 
  ! Packet ID
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="5"| {{Change|0x0E|0x10}}
+
  | rowspan="1"| 0x05
  |rowspan="5"| Play
+
  | rowspan="1"| Login
  |rowspan="5"| Client
+
  | rowspan="1"| Client
  |style="background-color: #d9ead3;"| Transaction Id
+
  | colspan="2"| Key
  |style="background-color: #d9ead3;"| VarInt
+
  | colspan="2"| Identifier
  |style="background-color: #d9ead3;"| This id should also be used in the tab completion response packet, or it will be ignored.
+
  | The identifier of the cookie.
|- style="background-color: #d9ead3;"
 
| Start
 
| VarInt
 
|
 
|- style="background-color: #d9ead3;"
 
| Length
 
| VarInt
 
|
 
|-
 
| Count
 
| VarInt
 
| Number of elements in the following array
 
|-
 
| Matches
 
| Array of String (32767)
 
| One eligible command, note that each command is sent separately instead of in a single string, hence the need for Count
 
 
  |}
 
  |}
  
==== Declare Commands ====
+
=== Serverbound ===
  
{{Need Info|This information is probably incomplete/inaccurate}}
+
==== Cookie Response (login) ====
  
Lists all of the commands on the server, and how they are parsed.
+
Response to a [[#Cookie_Request_(login)|Cookie Request (login)]] from the server. The Notchian server only accepts responses of up to 5 kiB in size.
  
{| class="wikitable"
+
{| class="wikitable" {{added}}
 
  ! Packet ID
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="3"| 0x11
+
  | rowspan="3"| 0x04
  |rowspan="3"| Play
+
  | rowspan="3"| Login
  |rowspan="3"| Client
+
  | rowspan="3"| Server
  | Count
+
  | colspan="2"| Key
  | VarInt
+
  | colspan="2"| Identifier
  | Length of the following array
+
  | The identifier of the cookie.
 
  |-
 
  |-
  | Nodes
+
  | colspan="2"| Has Payload
  | Array of Node
+
  | colspan="2"| Boolean
  | A array of <code>CommandNode</code>s
+
  | The payload is only present if the cookie exists on the client.
 
  |-
 
  |-
  | Root index
+
  | colspan="2"| Payload
  | VarInt
+
  | colspan="2"| Optional ByteArray(5120)
  | Index of the <code>RootCommandNode</code> in the previous array
+
  | The data of the cookie, if any.
 
  |}
 
  |}
  
Node:
+
== Configuration ==
  
{| class="wikitable"
+
=== Clientbound ===
! Field Name
 
! Field Type
 
! Notes
 
|-
 
| Flags
 
| Byte (read) and VarInt (written)
 
| Writing as VarInt doesn't currently cause any problems because there aren't more then 7 bits used, but it's something to look out for (don't set more than the 7 lowest bits, or things will break).
 
  {| class="wikitable"
 
  ! Bit mask
 
  !colspan="2"| Meaning
 
  |-
 
  |rowspan="4"| 0x03
 
  |colspan="2"| Type of the <code>CommandNode</code>
 
  |-
 
  |0
 
  |<code>RootCommandNode</code>
 
  |-
 
  |1
 
  |<code>LiteralCommandNode</code>
 
  |-
 
  |2
 
  |<code>ArgumentCommandNode</code>
 
  |-
 
  |0x04
 
  |colspan="2"| Has command
 
  |-
 
  |0x08
 
  |colspan="2"| Has redirect node
 
  |-
 
  |0x10
 
  |colspan="2"| Has custom suggestions, currently only present if the type is a <code>ArgumentCommandNode</code>
 
  |}
 
|-
 
| Children Count
 
| VarInt
 
| Length of the following array
 
|-
 
| Children
 
| Array of VarInt
 
| The indexes of the children <code>CommandNode</code>s within the <code>Nodes</code> array
 
|-
 
| Redirect node
 
| Optional VarInt
 
| Only if flags & 0x08. Points to the redirect <code>CommandNode</code> within the <code>Nodes</code> array
 
|-
 
| Extra node data
 
| Extra node data
 
| Type depends on the <code>CommandNode</code> type, see below.
 
|}
 
  
Extra node data:
+
==== Cookie Request (configuration) ====
{| class="wikitable"
 
! Type
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
| <code>RootCommandNode</code>
 
| Empty
 
| Empty
 
|
 
|-
 
| <code>LiteralCommandNode</code>
 
| Literal
 
| String (32767)
 
| The text
 
|-
 
|rowspan="4"| <code>ArgumentCommandNode</code>
 
| Name
 
| String (32767)
 
| The name of the argument
 
|-
 
| Parser
 
| Identifier
 
| One of several known to the client, listed below.  If the client does not know the parser, reading this RequiredArgumentBuilder stops immediately (following fields are not read)
 
|-
 
| Properties
 
| Optional, varies
 
| See below.  Varies depending on the parser.
 
|-
 
| Suggests
 
| Optional Identifier
 
| Only present if (flags & 0x10) != 0. See below for the available types.
 
|}
 
  
Parsers:
+
Requests a cookie that was previously stored.
  
{| class="wikitable"
+
{| class="wikitable" {{added}}
  ! Identifier
+
  ! Packet ID
  ! Description
+
  ! State
  ! Properties
+
  ! Bound To
 +
! colspan="2"| Field Name
 +
! colspan="2"| Field Type
 +
! Notes
 
  |-
 
  |-
  | <code>brigadier:bool</code>
+
  | rowspan="1"| 0x00
| Boolean value (<code>true</code> or <code>false</code>, case-sensitive)
+
  | rowspan="1"| Configuration
| None
+
  | rowspan="1"| Client
|-
+
  | colspan="2"| Key
| <code>brigadier:double</code>
+
  | colspan="2"| Identifier
| Double
+
  | The identifier of the cookie.
| Specifies min and max values:
 
  {| class="wikitable"
 
  ! Name
 
  ! Type
 
  ! Description
 
  |-
 
  | Flags
 
  | Byte
 
  |
 
  |-
 
  | Min
 
  | Optional double
 
  | Only if flags & 0x01.  If not specified, defaults to <code>-Double.MAX_VALUE</code> (≈ -1.7976931348623157E307)
 
  |-
 
  | Max
 
  | Optional double
 
  | Only if flags & 0x02.  If not specified, defaults to <code>Double.MAX_VALUE</code> (≈ 1.7976931348623157E307)
 
  |}
 
|-
 
| <code>brigadier:float</code>
 
| Float
 
| Specifies min and max values:
 
  {| class="wikitable"
 
  ! Name
 
  ! Type
 
  ! Description
 
  |-
 
  | Flags
 
  | Byte
 
  |
 
  |-
 
  | Min
 
  | Optional float
 
  | Only if flags & 0x01. If not specified, defaults to <code>-Float.MAX_VALUE</code> (≈ -3.4028235E38)
 
  |-
 
  | Max
 
  | Optional float
 
  | Only if flags & 0x02.  If not specified, defaults to <code>Float.MAX_VALUE</code> (≈ 3.4028235E38)
 
  |}
 
|-
 
| <code>brigadier:integer</code>
 
| Integer
 
| Specifies min and max values:
 
  {| class="wikitable"
 
  ! Name
 
  ! Type
 
  ! Description
 
  |-
 
  | Flags
 
  | Byte
 
  |
 
  |-
 
  | Min
 
  | Optional integer
 
  | Only if flags & 0x01.  If not specified, defaults to <code>Integer.MIN_VALUE</code> (-2147483648)
 
  |-
 
  | Max
 
  | Optional integer
 
  | Only if flags & 0x02.  If not specified, defaults to <code>Integer.MAX_VALUE</code> (2147483647)
 
  |}
 
  |-
 
| <code>brigadier:string</code>
 
| A string
 
| A VarInt enum:
 
  {| class="wikitable"
 
  ! Value
 
  ! Name
 
  ! Description
 
  |-
 
  | 0
 
  | <code>SINGLE_WORD</code>
 
  | Reads a single word
 
  |-
 
  | 1
 
  | <code>QUOTABLE_PHRASE</code>
 
  | If it starts with a <code>"</code>, keeps reading until another <code>"</code> (allowing escaping with <code>\</code>).  Otherwise behaves the same as <code>SINGLE_WORD</code>
 
  |-
 
  | 2
 
  | <code>GREEDY_PHRASE</code>
 
  | Reads the rest of the content after the cursor.  Quotes will not be removed.
 
  |}
 
|-
 
  | <code>minecraft:entity</code>
 
| A selector, player name, or UUID.
 
| Has a single flags byte:
 
  {| class="wikitable"
 
  ! Bit mask
 
  ! Meaning
 
  |-
 
  | 0x01
 
  | Only allows 1 entity/player
 
  |-
 
  | 0x02
 
  | Only allows players
 
  |}
 
  |-
 
| <code>minecraft:game_profile</code>
 
| A player, online or not.  Can also use a selector, which may match one or more players (but not entities).
 
| None
 
|-
 
| <code>minecraft:block_pos</code>
 
| A location, represented as 3 numbers (which must be integers).  May use relative locations with <code>~</code>.
 
| None
 
|-
 
| <code>minecraft:vec3</code>
 
| A location, represented as 3 numbers (which may have a decimal point, but will be moved to the center of a block if none is specified).  May use relative locations with <code>~</code>.
 
| None
 
|-
 
| <code>minecraft:vec2</code>
 
| A location, represented as 2 numbers (which may have a decimal point, but will be moved to the center of a block if none is specified).  May use relative locations with <code>~</code>.
 
| None
 
|-
 
| <code>minecraft:block</code>
 
| A block state, optionally including NBT and state information.
 
| None
 
|-
 
| <code>minecraft:item</code>
 
| An item, optionally including NBT.
 
| None
 
|-
 
| <code>minecraft:color</code>
 
| A chat color.  One of the names from [[Chat#Colors]], or <code>reset</code>.  Case-insensitive.
 
| None
 
|-
 
| <code>minecraft:component</code>
 
| A JSON [[Chat]] component.
 
| None
 
|-
 
| <code>minecraft:message</code>
 
| A regular message, potentially including selectors.
 
| None
 
|-
 
| <code>minecraft:nbt</code>
 
| An NBT value, parsed using JSON-NBT rules.
 
| None
 
|-
 
| <code>minecraft:nbt_path</code>
 
| A path within an NBT value, allowing for array and member accesses.
 
| None
 
|-
 
| <code>minecraft:objective</code>
 
| A scoreboard objective.
 
| None
 
|-
 
| <code>minecraft:objective_criteria</code>
 
| A single score criterion.
 
| None
 
|-
 
| <code>minecraft:operation</code>
 
| A scoreboard operator
 
| None
 
|-
 
| <code>minecraft:particle</code>
 
| A particle effect (an identifier with extra information following it for specific particles, mirroring the [[#Particle|Particle]] packet)
 
| None
 
|-
 
| <code>minecraft:rotation</code>
 
| An angle, represented as 2 numbers (which may have a decimal point, but will be moved to the center of a block if none is specified).  May use relative locations with <code>~</code>.
 
| None
 
|-
 
| <code>minecraft:scoreboard_slot</code>
 
| A scoreboard display position slot.  <code>list</code>, <code>sidebar</code>, <code>belowName</code>, and <code>sidebar.team.${color}</code> for all chat colors (<code>reset</code> is not included)
 
| None
 
|-
 
| <code>minecraft:score_holder</code>
 
| Something that can join a team.  Allows selectors and <code>*</code>.
 
| Has a single flags byte:
 
  {| class="wikitable"
 
  ! Bit mask
 
  ! Meaning
 
  |-
 
  | 0x01
 
  | Unknown.
 
  |-
 
  | 0x02
 
  | Unknown.
 
  |}
 
|-
 
| <code>minecraft:swizzle</code>
 
| A collection of up to 3 axes.
 
| None
 
|-
 
| <code>minecraft:team</code>
 
  | The name of a team.  Parsed as an unquoted string.
 
| None
 
|-
 
| <code>minecraft:item_slot</code>
 
| A name for an inventory slot.
 
| None
 
|-
 
| <code>minecraft:resource_location</code>
 
| An Identifier.
 
| None
 
|-
 
| <code>minecraft:mob_effect</code>
 
| A potion effect.
 
| None
 
 
  |}
 
  |}
  
Suggestion types:
+
==== Store Cookie (configuration) ====
  
{| class="wikitable"
+
Stores some arbitrary data on the client, which persists between server transfers. The Notchian client only accepts cookies of up to 5 kiB in size.
  ! Identifier
 
  ! Description
 
  |-
 
  | <code>minecraft:ask_server</code>
 
  | Sends the <code>Tab-Complete</code> packet to the server to request tab completions.
 
  |-
 
  | <code>minecraft:all_recipes</code>
 
  | Suggests all the available recipes.
 
  |-
 
  | <code>minecraft:available_sounds</code>
 
  | Suggests all the available sounds.
 
  |-
 
  | <code>minecraft:summonable_entities</code>
 
  | Suggests all the summonable entities.
 
  |}
 
  
==== Named Sound Effect ====
+
{| class="wikitable" {{added}}
{{See also|#Sound Effect}}
 
 
 
Used to play a sound effect on the client. Custom sounds may be added by resource packs.
 
 
 
{| 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="7"| {{Change|0x19|0x1A}}
+
  | rowspan="2"| 0x09
  |rowspan="7"| Play
+
  | rowspan="2"| Configuration
  |rowspan="7"| Client
+
  | rowspan="2"| Client
  | Sound Name
+
  | colspan="2"| Key
  | {{Change|String (256)|Identifier}}
+
  | colspan="2"| Identifier
  | All sound effect names as of 1.12.2 can be seen [http://pokechu22.github.io/Burger/1.12.2.html#sounds here].
+
  | The identifier of the cookie.
 
  |-
 
  |-
  | Sound Category
+
  | colspan="2"| Payload
| VarInt Enum
+
  | colspan="2"| ByteArray(5120)
  | The category that this sound will be played from ([https://gist.github.com/konwboj/7c0c380d3923443e9d55 current categories])
+
  | The data of the cookie.
|-
 
| Effect Position X
 
| Int
 
| Effect X multiplied by 8 ([[Data types#Fixed-point numbers|fixed-point number]] with only 3 bits dedicated to the fractional part)
 
  |-
 
| Effect Position Y
 
| Int
 
| Effect Y multiplied by 8 ([[Data types#Fixed-point numbers|fixed-point number]] with only 3 bits dedicated to the fractional part)
 
|-
 
| 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
 
 
  |}
 
  |}
  
==== Chunk Data ====
+
==== Transfer (configuration) ====
{{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).
 
  
{{Change||Indexes into the global palette are still used, but since the global palette has changed, behavior is different.}}
+
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="9"| {{Change|0x20|0x21}}
+
  | rowspan="2"| 0x0A
  |rowspan="9"| Play
+
  | rowspan="2"| Configuration
  |rowspan="9"| Client
+
  | rowspan="2"| Client
  | Chunk X
+
  | colspan="2"| Host
| Int
+
  | colspan="2"| String
  | Chunk coordinate (block coordinate divided by 16, rounded down)
+
  | The hostname of IP of the server.
|-
 
| 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
+
  | colspan="2"| Port
| Byte array
+
  | colspan="2"| VarInt
| See [[Chunk Format#Data structure|data structure]] in Chunk Format
+
  | The port of the server.
  |-
 
| Number of block entities
 
| VarInt
 
  | Length of 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.
 
 
  |}
 
  |}
  
 +
=== Serverbound ===
  
==== Particle ====
+
==== Cookie Response (configuration) ====
  
Displays the named particle
+
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="11"| {{Change|0x22|0x23}}
+
  | rowspan="3"| 0x01
  |rowspan="11"| Play
+
  | rowspan="3"| Configuration
  |rowspan="11"| Client
+
  | rowspan="3"| Server
  | Particle ID
+
  | colspan="2"| Key
| Int
+
  | colspan="2"| Identifier
  | See below
+
  | The identifier of the cookie.
|-
 
  | Long Distance
 
| Boolean
 
| If true, particle distance increases from 256 to 65536
 
|-
 
| X
 
| Float
 
| X position of the particle
 
|-
 
| 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
+
  | colspan="2"| Has Payload
  | Int
+
  | colspan="2"| Boolean
  | The number of particles to create
+
  | The payload is only present if the cookie exists on the client.
 
  |-
 
  |-
  | Data
+
  | colspan="2"| Payload
| {{Change|Array of VarInt|Varies}}
+
  | colspan="2"| Optional ByteArray(5120)
  | {{Change|Length depends on particle. "iconcrack" has length of 2, "blockcrack", "blockdust", and "fallingdust" have lengths of 1, the rest have 0.|Type of data varies based off of the particle.  For "iconcrack", it is a [[Slot]].  For "blockcrack", "blockdust", and "fallingdust", it is a block state encoded as a VarInt that is an index within the global palette.}}
+
| The data of the cookie, if any.
 
  |}
 
  |}
  
==== Craft Recipe Response ====
+
== Play ==
 +
 
 +
=== Clientbound ===
 +
 
 +
==== Cookie Request (play) ====
  
Response to the serverbound packet ([[#Craft Recipe Request|Craft Recipe Request]]), with the same recipe ID.  Appears to be used to notify the UI.
+
Requests a cookie that was previously stored.
  
{| class="wikitable"
+
{| class="wikitable" {{added}}
 
  ! Packet ID
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="2"| {{Change|0x2B|0x2C}}
+
  | rowspan="1"| 0x16
  |rowspan="2"| Play
+
  | rowspan="1"| Play
  |rowspan="2"| Client
+
  | rowspan="1"| Client
  | Window ID
+
  | colspan="2"| Key
| Byte
+
  | colspan="2"| Identifier
  |
+
  | The identifier of the cookie.
|-
 
| Recipe
 
| {{Change|VarInt|Identifer}}
 
  | A recipe ID
 
 
  |}
 
  |}
  
 +
==== Store Cookie (play) ====
  
==== Unlock Recipes ====
+
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="8"| {{Change|0x31|0x32}}
+
  | rowspan="2"| 0x6A
  |rowspan="8"| Play
+
  | rowspan="2"| Play
  |rowspan="8"| Client
+
  | rowspan="2"| Client
  |-
+
  | colspan="2"| Key
  | Action
+
  | colspan="2"| Identifier
| VarInt
+
  | The identifier of the cookie.
  | 0: init, 1: add, 2: remove
 
 
  |-
 
  |-
  | Crafting Book Open
+
  | colspan="2"| Payload
| Boolean
+
  | colspan="2"| ByteArray(5120)
| If true, then the crafting book will be open when the player opens its inventory.
+
  | The data of the cookie.
|-
 
| Filtering Craftable
 
| 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 ====
+
==== Transfer (play) ====
  
This is sent to the client when it should create a new {{Minecraft Wiki|scoreboard}} objective or remove one.
+
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="4"| {{Change|0x42|0x43}}
+
  | rowspan="2"| 0x72
  |rowspan="4"| Play
+
  | rowspan="2"| Play
  |rowspan="4"| Client
+
  | rowspan="2"| Client
  | Objective Name
+
  | colspan="2"| Host
  | String (16)
+
  | colspan="2"| String
  | An unique name for the objective
+
  | The hostname of IP of the server.
 
  |-
 
  |-
  | Mode
+
  | colspan="2"| Port
| Byte
+
  | colspan="2"| VarInt
  | 0 to create the scoreboard. 1 to remove the scoreboard. 2 to update the display text.
+
  | The port of the server.
|-
 
| Objective Value
 
| Optional String (32)
 
  | Only if mode is 0 or 2. The text to be displayed for the score
 
|-
 
| Type
 
| Optional {{change|String|VarInt Enum}}
 
| Only if mode is 0 or 2. {{change|“integer” or “hearts”|0 = "integer", 1 = "hearts"}}
 
 
  |}
 
  |}
  
==== Stop Sound ====
+
==== Update Attributes ====
 +
 
 +
Sets {{Minecraft Wiki|Attribute|attributes}} on the given entity.
  
 
{| class="wikitable"
 
{| class="wikitable"
Line 939: Line 603:
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="7"| 0x4A
+
  | 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"
 
{| class="wikitable"
! Packet ID
 
! State
 
! Bound To
 
!colspan="2"| Field Name
 
!colspan="2"| Field Type
 
! Notes
 
|-
 
|rowspan="4"| 0x52
 
|rowspan="4"| Play
 
|rowspan="4"| Client
 
|colspan="2"| Num Recipes
 
|colspan="2"| VarInt
 
| Length of 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:
 
 
{| 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
 
    | Length of 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
 +
| 1.0
 +
| Spawn Reinforcements Chance.
 +
|- {{added}}
 +
| 17
 +
| generic.step_height
 +
| 0.6
 +
| 0.0
 +
| 10.0
 +
| Step Height.
 
  |}
 
  |}
  
Ingredient is defined as:
+
''Modifier Data'' structure:
  
 
{| class="wikitable"
 
{| class="wikitable"
! Name
 
! Type
 
! Description
 
|-
 
| Count
 
| VarInt
 
| Length of 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 ====
 
 
{{Warning|This packet MUST be send, even if it's empty, not doing so can crash the client (e.g. when clicking a fuel slot in a furnace).}}
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
 
  ! Field Name
 
  ! Field Name
 
  ! Field Type
 
  ! Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="2"| 0x53
+
  | UUID
|rowspan="2"| Play
+
  | UUID
|rowspan="2"| Client
 
| Block Tags
 
| (See below)
 
| IDs are block IDs
 
|-
 
| Item Tags
 
| (See below)
 
| IDs are item IDs
 
|}
 
 
 
Tags look like:
 
 
 
{| class="wikitable"
 
!colspan="2"| Field Name
 
!colspan="2"| Field Type
 
! Notes
 
|-
 
|colspan="2"| Length
 
|colspan="2"| VarInt
 
| Length of the following array
 
|-
 
|rowspan="3"| Tags
 
| Tag name
 
|rowspan="3"| Array
 
  | Identifier
 
 
  |
 
  |
 
  |-
 
  |-
  | Count
+
  | Amount
  | VarInt
+
  | Double
  | Length of the following array
+
  | May be positive or negative.
 
  |-
 
  |-
  | Entries
+
  | Operation
  | Array of VarInt
+
  | Byte
  | Numeric ID of the block/item.
+
  | See below.
 
  |}
 
  |}
  
=== Serverbound ===
+
The operation controls how the base value of the modifier is changed.
  
==== Tab-Complete (serverbound) ====
+
* 0: Add/subtract amount
 +
* 1: Add/subtract amount percent of the current value
 +
* 2: Multiply by amount percent
  
{{Need Info|This is most definitely no longer an accurate description of this packet}}
+
All of the 0's are applied first, and then the 1's, and then the 2's.
  
Sent when the user presses ''tab'' while writing text.
+
==== Entity Effect ====
  
 
{| class="wikitable"
 
{| class="wikitable"
Line 1,213: Line 814:
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="5"| {{Change|0x01|0x04}}
+
  | rowspan="7"| 0x72
  |rowspan="5"| Play
+
  | rowspan="7"| Play
  |rowspan="5"| Server
+
  | rowspan="7"| Client
  |style="background-color: #d9ead3;"| Transaction Id
+
| Entity ID
  |style="background-color: #d9ead3;"| VarInt
+
  | VarInt
  |style="background-color: #d9ead3;"| The id received in the tab completion request packet, must match or the client will ignore this packet.
+
|
 +
  |-
 +
| Effect ID
 +
| VarInt
 +
  | See {{Minecraft Wiki|Status effect#Effect list|this table}}.
 
  |-
 
  |-
  | Text
+
  | Amplifier
  | String (32767)
+
  | Byte
  | All text behind the cursor without the <code>/</code> (e.g. to the left of the cursor in left-to-right languages like English)
+
  | Notchian client displays effect level as Amplifier + 1.
  |- style="background-color: #f4cccc; text-decoration: line-through;"
+
|-
  | Assume Command
+
| Duration
 +
| VarInt
 +
| Duration in ticks. (-1 for infinite)
 +
  |-
 +
| Flags
 +
| Byte
 +
| Bit field, see below.
 +
|- {{removed}}
 +
  | Has Factor Data
 
  | Boolean
 
  | 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.
+
  | Used in DARKNESS effect
  |- style="background-color: #f4cccc; text-decoration: line-through;"
+
  |- {{removed}}
| Has Position
+
  | Factor Codec
| Boolean
+
  | NBT Tag
|
+
  | See below
|- style="background-color: #f4cccc; text-decoration: line-through;"
 
  | Looked At Block
 
  | Optional Position
 
  | The position of the block being looked at. Only sent if Has Position is true.
 
 
  |}
 
  |}
  
==== Craft Recipe Request ====
+
{{Need Info|What exact effect does the blend bit flag have on the client? What happens if it is used on effects besides DARKNESS?}}
  
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.
+
Within flags:
  
This packet is sent when a player clicks a recipe in the crafting book that is craftable (white border).
+
* 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.}}
  
{| class="wikitable"
+
{{change|Factor Data|}}
  ! Packet ID
+
{| class="wikitable" {{removed}}
  ! State
+
  !Name
  ! Bound To
+
  !Type
  ! Field Name
+
  !style="width: 250px;" colspan="2"| Notes
  ! Field Type
+
  |-
  ! Notes
+
| padding_duration
 +
| TAG_INT
 +
|
 +
|-
 +
| factor_start
 +
| TAG_FLOAT
 +
|
 +
|-
 +
| factor_target
 +
  | TAG_FLOAT
 +
  |
 
  |-
 
  |-
  |rowspan="3"| 0x12
+
  | factor_current
|rowspan="3"| Play
+
  | TAG_FLOAT
|rowspan="3"| Server
 
| Window ID
 
  | Byte
 
 
  |
 
  |
 
  |-
 
  |-
  | Recipe
+
  | effect_changed_timestamp
  | {{Change|VarInt|Identifier}}
+
  | TAG_INT
| A recipe ID
 
 
  |-
 
  |-
  | Make all
+
  | factor_previous_frame
  | Boolean
+
  | TAG_FLOAT
  | Affects the amount of items processed; true if shift is down when clicked
+
  |-
 +
| had_effect_last_tick
 +
| TAG_BOOLEAN
 
  |}
 
  |}
 
 
== Handshaking ==
 
 
=== Clientbound ===
 
 
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 ===
 
=== Serverbound ===
  
==== Handshake ====
+
==== Cookie Response (play) ====
  
This causes the server to switch into the target state.
+
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.
  
{| 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"| 0x00
+
  | rowspan="3"| 0x6A
  |rowspan="4"| Handshaking
+
  | rowspan="3"| Play
  |rowspan="4"| Server
+
  | rowspan="3"| Server
  | Protocol Version
+
  | colspan="2"| Key
  | VarInt
+
  | colspan="2"| Identifier
  | See [[protocol version numbers]] (currently {{change|340|350}})
+
  | 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
  | VarInt Enum
+
  | colspan="2"| Optional ByteArray(5120)
  | 1 for [[#Status|status]], 2 for [[#Login|login]]
+
  | The data of the cookie, if any.
 
  |}
 
  |}
 
== Status ==
 
 
=== Clientbound ===
 
 
No changes so far.
 
 
=== Serverbound ===
 
 
No changes so far.
 
 
== Login ==
 
 
=== Clientbound ===
 
 
No changes so far.
 
 
=== Serverbound ===
 
 
No changes so far.
 
 
  
 
[[Category:Minecraft Modern]]
 
[[Category:Minecraft Modern]]

Latest revision as of 05:25, 26 February 2024

This page documents the changes from the last stable Minecraft release (currently 1.20.4, protocol 765) to the current pre-release (currently 24w03b, protocol Snapshot 172). Note that this page contains bleeding-edge information that may not be completely or correctly documented.

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

Contents

Data types

No changes so far.

Packets

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

New/modified data types

No changes so far.

Entity Metadata

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

Armadillo

Extends Animal.

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

Block Actions

No changes so far.

Inventories

No changes so far.

Plugin Channels

No changes so far.

Handshake

Serverbound

Handshake

This causes the server to switch into the target state.

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

Status

Clientbound

No changes so far.

Serverbound

No changes so far.

Login

Clientbound

Cookie Request (login)

Requests a cookie that was previously stored.

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

Serverbound

Cookie Response (login)

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

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

Configuration

Clientbound

Cookie Request (configuration)

Requests a cookie that was previously stored.

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

Store Cookie (configuration)

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

Packet ID State Bound To Field Name Field Type Notes
0x09 Configuration Client Key Identifier The identifier of the cookie.
Payload ByteArray(5120) The data of the cookie.

Transfer (configuration)

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

Packet ID State Bound To Field Name Field Type Notes
0x0A Configuration Client Host String The hostname of IP of the server.
Port VarInt The port of the server.

Serverbound

Cookie Response (configuration)

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

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

Play

Clientbound

Cookie Request (play)

Requests a cookie that was previously stored.

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

Store Cookie (play)

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

Packet ID State Bound To Field Name Field Type Notes
0x6A Play Client Key Identifier The identifier of the cookie.
Payload ByteArray(5120) The data of the cookie.

Transfer (play)

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

Packet ID State Bound To Field Name Field Type Notes
0x72 Play Client Host String The hostname of IP of the server.
Port VarInt The port of the server.

Update Attributes

Sets attributes on the given entity.

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

Known Key values (see also Attribute#Modifiers):

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

Modifier Data structure:

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

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

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

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

Entity Effect

Packet ID State Bound To Field Name Field Type Notes
0x72 Play Client Entity ID VarInt
Effect ID VarInt See this table.
Amplifier Byte Notchian client displays effect level as Amplifier + 1.
Duration VarInt Duration in ticks. (-1 for infinite)
Flags Byte Bit field, see below.
Has Factor Data Boolean Used in DARKNESS effect
Factor Codec NBT Tag See below
Huh.png The following information needs to be added to this page:
What exact effect does the blend bit flag have on the client? What happens if it is used on effects besides DARKNESS?

Within flags:

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

Factor Data

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

Serverbound

Cookie Response (play)

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

Packet ID State Bound To Field Name Field Type Notes
0x6A Play Server Key Identifier The identifier of the cookie.
Has Payload Boolean The payload is only present if the cookie exists on the client.
Payload Optional ByteArray(5120) The data of the cookie, if any.