Difference between revisions of "Pre-release protocol"

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(updated version number to 1.9-pre4 (protocol version 106))
(→‎Entity Metadata: Merge changes from stable docs to incorporate new metadata type templates. Fix my earlier mistake on Pose in the process.)
 
Line 1: Line 1:
This page documents the changes from the [[Protocol|last stable Minecraft release]] (currently [[Protocol version numbers|1.8.9, protocol 47]]) to the current pre-release (currently [[Protocol version numbers|1.9-pre4, protocol 106]]). 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 ===
  
* [[#Chunk Section|Chunk Section]]
+
No changes so far.
* [[#Entity Metadata|Entity Metadata]]
 
  
 
=== Packets ===
 
=== Packets ===
Line 17: Line 16:
 
  ! ID
 
  ! ID
 
  ! Packet name
 
  ! Packet name
  ! 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|{{Change|0x0E|0x00}}|Spawn Object}}
+
{{PacketList|0x05|Cookie Request (login)|rel=added}}
{{PacketList|{{Change|0x11|0x01}}|Spawn Experience Orb|pre=unchanged}}
 
{{PacketList|{{Change|0x2C|0x02}}|Spawn Global Entity|pre=unchanged}}
 
{{PacketList|{{Change|0x0F|0x03}}|Spawn Mob}}
 
{{PacketList|{{Change|0x10|0x04}}|Spawn Painting|pre=unchanged}}
 
{{PacketList|{{Change|0x0C|0x05}}|Spawn Player}}
 
{{PacketList|{{Change|0x0B|0x06}}|Animation|pre=unchanged}}
 
{{PacketList|{{Change|0x37|0x07}}|Statistics|pre=unchanged}}
 
{{PacketList|{{Change|0x25|0x08}}|Block Break Animation|pre=unchanged}}
 
{{PacketList|{{Change|0x35|0x09}}|Update Block Entity|pre=unchanged}}
 
{{PacketList|{{Change|0x24|0x0A}}|Block Action|pre=unchanged}}
 
{{PacketList|{{Change|0x23|0x0B}}|Block Change|pre=unchanged}}
 
{{PacketList|0x0C|Boss Bar|rel=added}}
 
{{PacketList|{{Change|0x41|0x0D}}|Server Difficulty|pre=unchanged}}
 
{{PacketList|{{Change|0x3A|0x0E}}|Tab-Complete|pre=unchanged}}
 
{{PacketList|{{Change|0x02|0x0F}}|Chat Message|pre=unchanged}}
 
{{PacketList|{{Change|0x22|0x10}}|Multi Block Change|pre=unchanged}}
 
{{PacketList|{{Change|0x32|0x11}}|Confirm Transaction|pre=unchanged}}
 
{{PacketList|{{Change|0x2E|0x12}}|Close Window|pre=unchanged}}
 
{{PacketList|{{Change|0x2D|0x13}}|Open Window|pre=unchanged}}
 
{{PacketList|{{Change|0x30|0x14}}|Window Items|pre=unchanged}}
 
{{PacketList|{{Change|0x31|0x15}}|Window Property|pre=unchanged}}
 
{{PacketList|{{Change|0x2F|0x16}}|Set Slot|pre=unchanged}}
 
{{PacketList|0x17|Set Cooldown|rel=added}}
 
{{PacketList|{{Change|0x3F|0x18}}|Plugin Message|pre=unchanged}}
 
{{PacketList|{{Change|0x2F|0x19}}|Named Sound Effect|rel=Sound Effect}}
 
{{PacketList|{{Change|0x40|0x1A}}|Disconnect|pre=unchanged}}
 
{{PacketList|{{Change|0x1A|0x1B}}|Entity Status}}
 
{{PacketList|{{Change|0x27|0x1C}}|Explosion|pre=unchanged}}
 
{{PacketList|0x1D|Unload Chunk|rel=added}}
 
{{PacketList|{{Change|0x2B|0x1E}}|Change Game State|pre=unchanged}}
 
{{PacketList|{{Change|0x00|0x1F}}|Keep Alive|pre=unchanged}}
 
{{PacketList|{{Change|0x21|0x20}}|Chunk Data}}
 
{{PacketList|{{Change|0x28|0x21}}|Effect|pre=unchanged}}
 
{{PacketList|{{Change|0x2A|0x22}}|Particle|pre=unchanged}}
 
{{PacketList|{{Change|0x01|0x23}}|Join Game|pre=unchanged}}
 
{{PacketList|{{Change|0x34|0x24}}|Map}}
 
{{PacketList|{{Change|0x15|0x25}}|Entity Relative Move|pre=unchanged}}
 
{{PacketList|{{Change|0x17|0x26}}|Entity Look And Relative Move|pre=unchanged}}
 
{{PacketList|{{Change|0x16|0x27}}|Entity Look|pre=unchanged}}
 
{{PacketList|{{Change|0x14|0x28}}|Entity|pre=unchanged}}
 
{{PacketList|0x29|Vehicle Move|rel=added}}
 
{{PacketList|{{Change|0x36|0x2A}}|Open Sign Editor|pre=unchanged}}
 
{{PacketList|{{Change|0x39|0x2B}}|Player Abilities|pre=unchanged}}
 
{{PacketList|{{Change|0x42|0x2C}}|Combat Event}}
 
{{PacketList|{{Change|0x38|0x2D}}|Player List Item|pre=unchanged}}
 
{{PacketList|{{Change|0x08|0x2E}}|Player Position And Look}}
 
{{PacketList|{{Change|0x0A|0x2F}}|Use Bed|pre=unchanged}}
 
{{PacketList|{{Change|0x13|0x30}}|Destroy Entities|pre=unchanged}}
 
{{PacketList|{{Change|0x1E|0x31}}|Remove Entity Effect|pre=unchanged}}
 
{{PacketList|{{Change|0x48|0x32}}|Resource Pack Send|pre=unchanged}}
 
{{PacketList|{{Change|0x07|0x33}}|Respawn|pre=unchanged}}
 
{{PacketList|{{Change|0x19|0x34}}|Entity Head Look|pre=unchanged}}
 
{{PacketList|{{Change|0x44|0x35}}|World Border|pre=unchanged}}
 
{{PacketList|{{Change|0x43|0x36}}|Camera|pre=unchanged}}
 
{{PacketList|{{Change|0x09|0x37}}|Held Item Change|pre=unchanged}}
 
{{PacketList|{{Change|0x3D|0x38}}|Display Scoreboard|pre=unchanged}}
 
{{PacketList|{{Change|0x1C|0x39}}|Entity Metadata|pre=unchanged}}
 
{{PacketList|{{Change|0x1B|0x3A}}|Attach Entity|pre=unchanged}}
 
{{PacketList|{{Change|0x12|0x3B}}|Entity Velocity|pre=unchanged}}
 
{{PacketList|{{Change|0x04|0x3C}}|Entity Equipment}}
 
{{PacketList|{{Change|0x1F|0x3D}}|Set Experience|pre=unchanged}}
 
{{PacketList|{{Change|0x06|0x3E}}|Update Health|pre=unchanged}}
 
{{PacketList|{{Change|0x3B|0x3F}}|Scoreboard Objective|pre=unchanged}}
 
{{PacketList|0x40|Set Passengers|rel=added}}
 
{{PacketList|{{Change|0x3E|0x41}}|Teams}}
 
{{PacketList|{{Change|0x3C|0x42}}|Update Score|pre=unchanged}}
 
{{PacketList|{{Change|0x05|0x43}}|Spawn Position|pre=unchanged}}
 
{{PacketList|{{Change|0x03|0x44}}|Time Update|pre=unchanged}}
 
{{PacketList|{{Change|0x45|0x45}}|Title|pre=unchanged}}
 
{{PacketList|{{Change|0x33|0x46}}|Update Sign|pre=unchanged}}
 
{{PacketList|0x47|Sound Effect|rel=added}}
 
{{PacketList|{{Change|0x47|0x48}}|Player List Header And Footer|pre=unchanged}}
 
{{PacketList|{{Change|0x0D|0x49}}|Collect Item|pre=unchanged}}
 
{{PacketList|{{Change|0x18|0x4A}}|Entity Teleport|pre=unchanged}}
 
{{PacketList|{{Change|0x20|0x4B}}|Entity Properties}}
 
{{PacketList|{{Change|0x1D|0x4C}}|Entity Effect|pre=unchanged}}
 
{{PacketList|0x26|Map Chunk Bulk|pre=removed}}
 
{{PacketList|0x46|Set Compression|pre=removed}}
 
{{PacketList|0x49|Update Entity NBT|pre=removed}}
 
 
  |-
 
  |-
  ! colspan=4 | Play serverbound
+
  !colspan="4"| Login serverbound
{{PacketList|0x00|Teleport Confirm|rel=added}}
+
{{PacketList|0x04|Cookie Response (login)|rel=added}}
{{PacketList|{{Change|0x14|0x01}}|Tab-Complete|rel=Tab-Complete 2}}
 
{{PacketList|{{Change|0x01|0x02}}|Chat Message|rel=Chat Message 2|pre=unchanged}}
 
{{PacketList|{{Change|0x16|0x03}}|Client Status}}
 
{{PacketList|{{Change|0x15|0x04}}|Client Settings}}
 
{{PacketList|{{Change|0x0F|0x05}}|Confirm Transaction|rel=Confirm Transaction 2|pre=unchanged}}
 
{{PacketList|{{Change|0x11|0x06}}|Enchant Item|pre=unchanged}}
 
{{PacketList|{{Change|0x0E|0x07}}|Click Window|pre=unchanged}}
 
{{PacketList|{{Change|0x0D|0x08}}|Close Window|rel=Close Window 2|pre=unchanged}}
 
{{PacketList|{{Change|0x17|0x09}}|Plugin Message|rel=Plugin Message 2|pre=unchanged}}
 
{{PacketList|{{Change|0x02|0x0A}}|Use Entity}}
 
{{PacketList|{{Change|0x00|0x0B}}|Keep Alive|rel=Keep Alive 2|pre=unchanged}}
 
{{PacketList|{{Change|0x04|0x0C}}|Player Position|pre=unchanged}}
 
{{PacketList|{{Change|0x06|0x0D}}|Player Position And Look|rel=Player Position And Look 2|pre=unchanged}}
 
{{PacketList|{{Change|0x05|0x0E}}|Player Look|pre=unchanged}}
 
{{PacketList|{{Change|0x03|0x0F}}|Player|pre=unchanged}}
 
{{PacketList|0x10|Vehicle Move (serverbound)|rel=added}}
 
{{PacketList|0x11|Steer Boat|rel=added}}
 
{{PacketList|{{Change|0x13|0x12}}|Player Abilities|rel=Player Abilities 2|pre=unchanged}}
 
{{PacketList|{{Change|0x07|0x13}}|Player Digging}}
 
{{PacketList|{{Change|0x0B|0x14}}|Entity Action}}
 
{{PacketList|{{Change|0x0C|0x15}}|Steer Vehicle|pre=unchanged}}
 
{{PacketList|{{Change|0x19|0x16}}|Resource Pack Status|pre=unchanged}}
 
{{PacketList|{{Change|0x09|0x17}}|Held Item Change|rel=Held Item Change 2|pre=unchanged}}
 
{{PacketList|{{Change|0x10|0x18}}|Creative Inventory Action|pre=unchanged}}
 
{{PacketList|{{Change|0x12|0x19}}|Update Sign|rel=Update Sign 2}}
 
{{PacketList|{{Change|0x0A|0x1A}}|Animation|rel=Animation 2}}
 
{{PacketList|{{Change|0x18|0x1B}}|Spectate|pre=unchanged}}
 
{{PacketList|{{Change|0x08|0x1C}}|Player Block Placement}}
 
{{PacketList|0x1D|Use Item|rel=added}}
 
 
  |-
 
  |-
  ! colspan=4 | Status clientbound
+
  !colspan="4"| Configuration clientbound
{{PacketList|0x00|Response|pre=unchanged}}
+
{{PacketList|0x00|Cookie Request (configuration)|rel=added}}
{{PacketList|0x01|Pong|pre=unchanged}}
+
{{PacketList|{{change|0x00|0x01}}|Clientbound Plugin Message (configuration)|pre=unchanged}}
 +
{{PacketList|{{change|0x01|0x02}}|Disconnect (configuration)|pre=unchanged}}
 +
{{PacketList|{{change|0x02|0x03}}|Finish Configuration|pre=unchanged}}
 +
{{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}}
 +
 
 
  |-
 
  |-
  ! colspan=4 | Status serverbound
+
  !colspan="4"| Configuration serverbound
{{PacketList|0x00|Request|pre=unchanged}}
+
{{PacketList|0x01|Cookie Response (configuration)|rel=added}}
{{PacketList|0x01|Ping|pre=unchanged}}
+
{{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}}
 
  |-
 
  |-
  ! colspan=4 | Login clientbound
+
  !colspan="4"| Play clientbound
{{PacketList|0x00|Disconnect|rel=Disconnect 2|pre=unchanged}}
+
{{PacketList|0x16|Cookie Request (Play)|rel=added}}
{{PacketList|0x01|Encryption Request|pre=unchanged}}
+
{{PacketList|{{change|0x16|0x17}}|Set Cooldown|pre=unchanged}}
{{PacketList|0x02|Login Success|pre=unchanged}}
+
{{PacketList|{{change|0x17|0x18}}|Chat Suggestions|pre=unchanged}}
{{PacketList|0x03|Set Compression|rel=Set Compression 2|pre=unchanged}}
+
{{PacketList|{{change|0x18|0x19}}|Clientbound Plugin Message (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x19|0x1A}}|Damage Event|pre=unchanged}}
 +
{{PacketList|{{change|0x1A|0x1B}}|Delete Message|pre=unchanged}}
 +
{{PacketList|{{change|0x1B|0x1C}}|Disconnect (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x1C|0x1D}}|Disguised Chat Message|pre=unchanged}}
 +
{{PacketList|{{change|0x1D|0x1E}}|Entity Event|pre=unchanged}}
 +
{{PacketList|{{change|0x1E|0x1F}}|Explosion|pre=unchanged}}
 +
{{PacketList|{{change|0x1F|0x20}}|Unload Chunk|pre=unchanged}}
 +
{{PacketList|{{change|0x20|0x21}}|Game Event|pre=unchanged}}
 +
{{PacketList|{{change|0x21|0x22}}|Open Horse Screen|pre=unchanged}}
 +
{{PacketList|{{change|0x22|0x23}}|Hurt Animation|pre=unchanged}}
 +
{{PacketList|{{change|0x23|0x24}}|Initialize World Border|pre=unchanged}}
 +
{{PacketList|{{change|0x24|0x25}}|Clientbound Keep Alive (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x25|0x26}}|Chunk Data and Update Light|pre=unchanged}}
 +
{{PacketList|{{change|0x26|0x27}}|World Event|pre=unchanged}}
 +
{{PacketList|{{change|0x27|0x28}}|Particle|pre=unchanged}}
 +
{{PacketList|{{change|0x28|0x29}}|Update Light|pre=unchanged}}
 +
{{PacketList|{{change|0x29|0x2A}}|Login (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x2A|0x2B}}|Map Data|pre=unchanged}}
 +
{{PacketList|{{change|0x2B|0x2C}}|Merchant Offers|pre=unchanged}}
 +
{{PacketList|{{change|0x2C|0x2D}}|Update Entity Position|pre=unchanged}}
 +
{{PacketList|{{change|0x2D|0x2E}}|Update Entity Position and Rotation|pre=unchanged}}
 +
{{PacketList|{{change|0x2E|0x2F}}|Update Entity Rotation|pre=unchanged}}
 +
{{PacketList|{{change|0x2F|0x30}}|Move Vehicle|pre=unchanged}}
 +
{{PacketList|{{change|0x30|0x31}}|Open Book|pre=unchanged}}
 +
{{PacketList|{{change|0x31|0x32}}|Open Screen|pre=unchanged}}
 +
{{PacketList|{{change|0x32|0x33}}|Open Sign Editor|pre=unchanged}}
 +
{{PacketList|{{change|0x33|0x34}}|Ping (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x34|0x35}}|Ping Response (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x35|0x36}}|Place Ghost Recipe|pre=unchanged}}
 +
{{PacketList|{{change|0x36|0x37}}|Player Abilities|pre=unchanged}}
 +
{{PacketList|{{change|0x37|0x38}}|Player Chat Message|pre=unchanged}}
 +
{{PacketList|{{change|0x38|0x39}}|End Combat|pre=unchanged}}
 +
{{PacketList|{{change|0x39|0x3A}}|Enter Combat|pre=unchanged}}
 +
{{PacketList|{{change|0x3A|0x3B}}|Combat Death|pre=unchanged}}
 +
{{PacketList|{{change|0x3B|0x3C}}|Player Info Remove|pre=unchanged}}
 +
{{PacketList|{{change|0x3C|0x3D}}|Player Info Update|pre=unchanged}}
 +
{{PacketList|{{change|0x3D|0x3E}}|Look At|pre=unchanged}}
 +
{{PacketList|{{change|0x3E|0x3F}}|Synchronize Player Position|pre=unchanged}}
 +
{{PacketList|{{change|0x3F|0x40}}|Update Recipe Book|pre=unchanged}}
 +
{{PacketList|{{change|0x40|0x41}}|Remove Entities|pre=unchanged}}
 +
{{PacketList|{{change|0x41|0x42}}|Remove Entity Effect|pre=unchanged}}
 +
{{PacketList|{{change|0x42|0x43}}|Reset Score|pre=unchanged}}
 +
{{PacketList|{{change|0x43|0x44}}|Remove Resource Pack (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x44|0x45}}|Add Resource Pack (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x45|0x46}}|Respawn|pre=unchanged}}
 +
{{PacketList|{{change|0x46|0x47}}|Set Head Rotation|pre=unchanged}}
 +
{{PacketList|{{change|0x47|0x48}}|Update Section Blocks|pre=unchanged}}
 +
{{PacketList|{{change|0x48|0x49}}|Select Advancements Tab|pre=unchanged}}
 +
{{PacketList|{{change|0x49|0x4A}}|Server Data|pre=unchanged}}
 +
{{PacketList|{{change|0x4A|0x4B}}|Set Action Bar Text|pre=unchanged}}
 +
{{PacketList|{{change|0x4B|0x4C}}|Set Border Center|pre=unchanged}}
 +
{{PacketList|{{change|0x4C|0x4D}}|Set Border Lerp Size|pre=unchanged}}
 +
{{PacketList|{{change|0x4D|0x4E}}|Set Border Size|pre=unchanged}}
 +
{{PacketList|{{change|0x4E|0x4F}}|Set Border Warning Delay|pre=unchanged}}
 +
{{PacketList|{{change|0x4F|0x50}}|Set Border Warning Distance|pre=unchanged}}
 +
{{PacketList|{{change|0x50|0x51}}|Set Camera|pre=unchanged}}
 +
{{PacketList|{{change|0x51|0x52}}|Set Held Item|pre=unchanged}}
 +
{{PacketList|{{change|0x52|0x53}}|Set Center Chunk|pre=unchanged}}
 +
{{PacketList|{{change|0x53|0x54}}|Set Render Distance|pre=unchanged}}
 +
{{PacketList|{{change|0x54|0x55}}|Set Default Spawn Position|pre=unchanged}}
 +
{{PacketList|{{change|0x55|0x56}}|Display Objective|pre=unchanged}}
 +
{{PacketList|{{change|0x56|0x57}}|Set Entity Metadata|pre=unchanged}}
 +
{{PacketList|{{change|0x57|0x58}}|Link Entities|pre=unchanged}}
 +
{{PacketList|{{change|0x58|0x59}}|Set Entity Velocity|pre=unchanged}}
 +
{{PacketList|{{change|0x59|0x5A}}|Set Equipment|pre=unchanged}}
 +
{{PacketList|{{change|0x5A|0x5B}}|Set Experience|pre=unchanged}}
 +
{{PacketList|{{change|0x5B|0x5C}}|Set Health|pre=unchanged}}
 +
{{PacketList|{{change|0x5C|0x5D}}|Update Objectives|pre=unchanged}}
 +
{{PacketList|{{change|0x5D|0x5E}}|Set Passengers|pre=unchanged}}
 +
{{PacketList|{{change|0x5E|0x5F}}|Update Teams|pre=unchanged}}
 +
{{PacketList|{{change|0x5F|0x60}}|Update Score|pre=unchanged}}
 +
{{PacketList|{{change|0x60|0x61}}|Set Simulation Distance|pre=unchanged}}
 +
{{PacketList|{{change|0x61|0x62}}|Set Subtitle Text|pre=unchanged}}
 +
{{PacketList|{{change|0x62|0x63}}|Update Time|pre=unchanged}}
 +
{{PacketList|{{change|0x63|0x64}}|Set Title Text|pre=unchanged}}
 +
{{PacketList|{{change|0x64|0x65}}|Set Title Animation Times|pre=unchanged}}
 +
{{PacketList|{{change|0x65|0x66}}|Entity Sound Effect|pre=unchanged}}
 +
{{PacketList|{{change|0x66|0x67}}|Sound Effect|pre=unchanged}}
 +
{{PacketList|{{change|0x67|0x68}}|Start Configuration|pre=unchanged}}
 +
{{PacketList|{{change|0x68|0x69}}|Stop Sound|pre=unchanged}}
 +
{{PacketList|0x6A|Store Cookie (Play)|rel=added}}
 +
{{PacketList|{{change|0x69|0x6B}}|System Chat Message|pre=unchanged}}
 +
{{PacketList|{{change|0x6A|0x6C}}|Set Tab List Header And Footer|pre=unchanged}}
 +
{{PacketList|{{change|0x6B|0x6D}}|Tag Query Response|pre=unchanged}}
 +
{{PacketList|{{change|0x6C|0x6E}}|Pickup Item|pre=unchanged}}
 +
{{PacketList|{{change|0x6D|0x6F}}|Teleport Entity|pre=unchanged}}
 +
{{PacketList|{{change|0x6E|0x70}}|Set Ticking State|pre=unchanged}}
 +
{{PacketList|{{change|0x6F|0x71}}|Step Tick|pre=unchanged}}
 +
{{PacketList|0x72|Transfer (Play)|rel=added}}
 +
{{PacketList|{{change|0x70|0x73}}|Update Advancements|pre=unchanged}}
 +
{{PacketList|{{change|0x71|0x74}}|Update Attributes}}
 +
{{PacketList|{{change|0x72|0x75}}|Entity Effect}}
 +
{{PacketList|{{change|0x73|0x76}}|Update Recipes|pre=unchanged}}
 +
{{PacketList|{{change|0x74|0x77}}|Update Tags (play)|pre=unchanged}}
 
  |-
 
  |-
  ! colspan=4 | Login serverbound
+
  !colspan="4"| Play serverbound
{{PacketList|0x00|Login Start|pre=unchanged}}
+
{{PacketList|0x10|Cookie Response (play)|rel=added}}
{{PacketList|0x01|Encryption Response|pre=unchanged}}
+
{{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}}
 
  |}
 
  |}
  
 
== New/modified data types ==
 
== New/modified data types ==
  
=== Chunk Section ===
+
No changes so far.
 +
 
 +
== Entity Metadata ==
  
Format is now:
+
{{#vardefine: meta_prerelease | 1}}
  
{| class="wikitable"
+
{{Metadata type definition/begin}}
|-
+
  ! Value
! Field Name
 
  ! Field Type
 
 
  ! Notes
 
  ! Notes
  |-
+
{{Metadata type definition|Byte}}
  | Bits Per Block
+
  | {{Type|Byte}}
  | Unsigned Byte
+
  |
  | How many bits per block in Data Array. If 0, the Palette Length and Palette fields are omitted and the global palette (with 13 bits per block) is used.
+
{{Metadata type definition|VarInt}}
  |-
+
| {{Type|VarInt}}
  | Palette Length
+
|
  | Optional VarInt
+
{{Metadata type definition|VarLong}}
  | Length of the following array
+
| {{Type|VarLong}}
  |-
+
|
  | Palette
+
{{Metadata type definition|Float}}
  | Optional Array of VarInt
+
| {{Type|Float}}
  | Mapping of block state IDs in the global palette to indices of this array
+
|
  |-
+
{{Metadata type definition|String}}
  | Data Array Length
+
| {{Type|String}}
  | VarInt
+
|
  | Number of bytes in the following array, divided by 8 (given as such because Notchian implements Data Array as an Array of Long)
+
{{Metadata type definition|Text Component}}
  |-
+
| {{Type|Text Component}}
  | Data Array
+
  |
  | Byte Array
+
{{Metadata type definition|Optional Text Component}}
  | List of 4096 indices pointing to state IDs in the Palette, followed by padding to round the length up to the next multiple of 8 bytes
+
  | ({{Type|Boolean}}, {{Type|Optional}} {{Type|Text Component}})
  |-
+
| Text Component is present if the Boolean is set to true.
  | Block Light
+
{{Metadata type definition|Slot}}
  | Byte Array
+
| {{Type|Slot}}
  | Half byte per block
+
|
  |-
+
{{Metadata type definition|Boolean}}
  | Sky Light
+
| {{Type|Boolean}}
  | Optional Byte Array
+
|
  | Only if in the Overworld; half byte per block
+
{{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
 
  |}
 
  |}
  
Data Array, Block Light, and Sky Light are given for each block with increasing x coordinates, within rows of increasing z coordinates, within layers of increasing y coordinates.
+
=== Armadillo ===
  
The global palette encodes a block as 13 bits. It uses the {{Minecraft Wiki|Data values#Block IDs|block ID}} for the first 9 bits, and the block damage value for the last 4 bits. For example, diorite (block ID <code>1</code> for <code>minecraft:stone</code> with damage <code>3</code>) would be encoded as <code>000000001 0011</code>.
+
{{Metadata inherit|Armadillo|inherits=Animal|start_at=17}}
 
+
{| class="wikitable" {{added}}
=== Entity Metadata ===
+
  ! Index
 
 
Format is now an array of entries, each of which looks like the following:
 
 
 
{| class="wikitable"
 
  ! Name
 
 
  ! Type
 
  ! Type
  ! Meaning
+
  !style="width: 250px;" colspan="2"| Meaning
  |-
+
  ! Default
| 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
+
  | {{Metadata id|added}}
  | Optional ''value of Type''
+
| {{Metadata type|Armadillo State}}
  | Only if Index is not <code>0xff</code>: the value of the metadata field
+
  |colspan="2"| Armadillo State
 +
  | IDLE
 
  |}
 
  |}
  
{| class="wikitable"
+
== Block Actions ==
! Value of Type field
 
! Type of Value field
 
! Notes
 
|-
 
| 0
 
| Byte
 
|
 
|-
 
| 1
 
| VarInt
 
|
 
|-
 
| 2
 
| Float
 
|
 
|-
 
| 3
 
| String
 
|
 
|-
 
| 4
 
| [[Chat]]
 
|
 
|-
 
| 5
 
| [[Slot]]
 
|
 
|-
 
| 6
 
| Boolean
 
|
 
|-
 
| 7
 
| Vector3F (Array of Float)
 
| 3 elements
 
|-
 
| 8
 
| [[Data Types#Position|Position]]
 
|
 
|-
 
| 9
 
| OptPosition (Boolean + Optional Position)
 
| Position is present if the Boolean is set to true
 
|-
 
| 10
 
| Direction (VarInt)
 
| ???
 
|-
 
| 11
 
| OptUUID (Boolean + Optional UUID)
 
| UUID is present if the Boolean is set to true
 
|-
 
| 12
 
| BlockID (VarInt)
 
| <code><nowiki>id &lt;&lt; 4 | data</nowiki></code>
 
|}
 
  
{| class="wikitable"
+
No changes so far.
! Entity class
 
! Index
 
! Type
 
! Meaning
 
|-
 
|rowspan="5"| Entity
 
| 0
 
| Byte
 
| Status bit mask, added 0x40 - glowing effect.
 
|-
 
| 1
 
| VarInt
 
| Air
 
|-
 
| 2
 
| String
 
| Custom Name
 
|-
 
| 3
 
| Boolean
 
| Is Custom Name Visible
 
|-
 
| 4
 
| Boolean
 
| Is Silent
 
|-
 
|rowspan="4"| AreaEffectCloud <sup>extends Entity</sup>
 
| 5
 
| Float
 
| Radius
 
|-
 
| 6
 
| VarInt
 
| Color (only for mob spell particle)
 
|-
 
| 7
 
| Boolean
 
| ''Unknown'' (seems that true value ignore radius and show effect as single point, not area)
 
|-
 
| 8
 
| VarInt
 
| Particle ID
 
|-
 
| Arrow <sup>extends Entity</sup>
 
| 5
 
| Byte
 
| Is Critical
 
|-
 
| TippedArrow <sup>extends Arrow</sup>
 
| 6
 
| VarInt
 
| Color
 
|-
 
|rowspan="4"| Boat <sup>extends Entity</sup>
 
| 5
 
| VarInt
 
| Time Since Last Hit
 
|-
 
| 6
 
| VarInt
 
| Forward Direction
 
|-
 
| 7
 
| Float
 
| Damage Taken
 
|-
 
| 8
 
| VarInt
 
| Type
 
|-
 
|rowspan="2"| EnderCrystal <sup>extends Entity</sup>
 
| 5
 
| OptPosition
 
| Beam Target
 
|-
 
| 6
 
| Boolean
 
| Show Bottom
 
|-
 
| Fireball <sup>extends Entity</sup>
 
|colspan="3"| ''no additional metadata''
 
|-
 
| WitherSkull <sup>extends Fireball</sup>
 
| 5
 
| Boolean
 
| Invulnerable
 
|-
 
| Fireworks <sup>extends Entity</sup>
 
| 5
 
| [[Slot]]
 
| Firework Info
 
|-
 
| Hanging <sup>extends Entity</sup>
 
|colspan="3"| ''no additional metadata''
 
|-
 
|rowspan="2"| ItemFrame <sup>extends Hanging</sup>
 
| 5
 
| [[Slot]]
 
| Item
 
|-
 
| 6
 
| VarInt
 
| Rotation
 
|-
 
| Item <sup>extends Entity</sup>
 
| 5
 
| [[Slot]]
 
| Item
 
|-
 
|rowspan="5"| Living <sup>extends Entity</sup>
 
| 5
 
| Byte
 
| ''Unknown (probably indicates which hand is currently used)''
 
|-
 
| 6
 
| Float
 
| Health
 
|-
 
| 7
 
| VarInt
 
| Potion Effect Color
 
|-
 
| 8
 
| Boolean
 
| Is Potion Effect Ambient
 
|-
 
| 9
 
| VarInt
 
| Number of Arrows in Entity
 
|-
 
|rowspan="8"| ArmorStand <sup>extends Living</sup>
 
|-
 
| 10
 
| Byte
 
| Status bit mask
 
|-
 
| 11
 
| Vector3F
 
| Head rotation
 
|-
 
| 12
 
| Vector3F
 
| Body rotation
 
|-
 
| 13
 
| Vector3F
 
| Left arm rotation
 
|-
 
| 14
 
| Vector3F
 
| Right arm rotation
 
|-
 
| 15
 
| Vector3F
 
| Left leg rotation
 
|-
 
| 16
 
| Vector3F
 
| Right leg rotation
 
|-
 
| Insentient <sup>extends Living</sup>
 
| 10
 
| Byte
 
| Status bit mask (NoAI, Left handed)
 
|-
 
| Ambient <sup>extends Insentient</sup>
 
|colspan="3"| ''no additional metadata''
 
|-
 
| Bat <sup>extends Ambient</sup>
 
| 11
 
| Byte
 
| Is Hanging
 
|-
 
| Creature <sup>extends Insentient</sup>
 
|colspan="3"| ''no additional metadata''
 
|-
 
| Ageable <sup>extends Creature</sup>
 
| 11
 
| Boolean
 
| Is Baby
 
|-
 
| Animal <sup>extends Ageable</sup>
 
|colspan="3"| ''no additional metadata''
 
|-
 
|rowspan="5"| Horse <sup>extends Animal</sup>
 
| 12
 
| Byte
 
| Status bit mask
 
|-
 
| 13
 
| VarInt
 
| Type
 
|-
 
| 14
 
| VarInt
 
| Variant
 
|-
 
| 15
 
| OptUUID
 
| Owner's UUID
 
|-
 
| 16
 
| VarInt
 
| Armor
 
|-
 
| Pig <sup>extends Animal</sup>
 
| 12
 
| Boolean
 
| Has Saddle
 
|-
 
| Rabbit <sup>extends Animal</sup>
 
| 12
 
| VarInt
 
| Type
 
|-
 
| Sheep <sup>extends Animal</sup>
 
| 12
 
| Byte
 
| Status bit mask
 
|-
 
|rowspan="2"| TameableAnimal <sup>extends Animal</sup>
 
| 12
 
| Byte
 
| Status bit mask (sitting, tamed)
 
|-
 
| 13
 
| OptUUID
 
| Owner's UUID
 
|-
 
| Ocelot <sup>extends TameableAnimal</sup>
 
| 14
 
| VarInt
 
| Type
 
|-
 
|rowspan="3"| Wolf <sup>extends TameableAnimal</sup>
 
| 14
 
| Float
 
| Damage Taken (used for tail rotation)
 
|-
 
| 15
 
| Boolean
 
| Is Begging
 
|-
 
| 16
 
| VarInt
 
| Collar Color
 
|-
 
| Villager <sup>extends Ageable</sup>
 
| 12
 
| VarInt
 
| ''Unknown''
 
|-
 
| Golem <sup>extends Creature</sup>
 
|colspan="3"| ''no additional metadata''
 
|-
 
| IronGolem <sup>extends Golem</sup>
 
| 11
 
| Byte
 
| Is Player Created
 
|-
 
|rowspan="3"| Shulker <sup>extends Golem</sup>
 
| 11
 
| Direction
 
| Facing Direction
 
|-
 
| 12
 
| OptPosition
 
| Attachment Position
 
|-
 
| 13
 
| Byte
 
| Shield Height
 
|-
 
| Monster <sup>extends Creature</sup>
 
|colspan="3"| ''no additional metadata''
 
|-
 
| Blaze <sup>extends Monster</sup>
 
| 11
 
| Byte
 
| Is On Fire
 
|-
 
|rowspan="3"| Creeper <sup>extends Monster</sup>
 
| 11
 
| VarInt
 
| State (-1 = Idle, 1 = Fuse)
 
|-
 
| 12
 
| Boolean
 
| Is Powered
 
|-
 
| 13
 
| Boolean
 
| Is Ignited
 
|-
 
|rowspan="2"| Guardian <sup>extends Monster</sup>
 
| 11
 
| Byte
 
| Status bit mask (elderly, retracting spikes)
 
|-
 
| 12
 
| VarInt
 
| Target EID
 
|-
 
|rowspan="2"| Skeleton <sup>extends Monster</sup>
 
| 11
 
| VarInt
 
| Type
 
|-
 
| 12
 
| Boolean
 
| ''Unknown (something hand related)''
 
|-
 
| Spider <sup>extends Monster</sup>
 
| 11
 
| Byte
 
| Is Climbing
 
|-
 
| Witch <sup>extends Monster</sup>
 
| 11
 
| Boolean
 
| Is Aggresive
 
|-
 
|rowspan="4"| Wither <sup>extends Monster</sup>
 
| 11
 
| VarInt
 
| First Head's Target
 
|-
 
| 12
 
| VarInt
 
| Second Head's Target
 
|-
 
| 13
 
| VarInt
 
| Third Head's Target
 
|-
 
| 14
 
| VarInt
 
| Invulnerable Time
 
|-
 
|rowspan="4"| Zombie <sup>extends Monster</sup>
 
| 11
 
| Boolean
 
| Is Baby
 
|-
 
| 12
 
| VarInt
 
| Is Villager (profession)
 
|-
 
| 13
 
| Boolean
 
| Is Converting
 
|-
 
| 14
 
| Boolean
 
| Are Hands Rised Up
 
|-
 
|rowspan="2"| Enderman <sup>extends Monster</sup>
 
| 11
 
| Block ID
 
| Carried Block
 
|-
 
| 12
 
| Boolean
 
| Is Screaming
 
|-
 
| EnderDragon <sup>extends Insentient</sup>
 
| 11
 
| VarInt
 
| Dragon Phase
 
|-
 
| Flying <sup>extends Insentient</sup>
 
|colspan="3"| ''no additional metadata''
 
|-
 
| Ghast <sup>extends Flying</sup>
 
| 11
 
| Boolean
 
| Is Attacking
 
|-
 
| Slime <sup>extends Insentient</sup>
 
| 11
 
| VarInt
 
| Size
 
|-
 
|rowspan="6"| Minecart <sup>extends Entity</sup>
 
| 5
 
| VarInt
 
| Shaking Power
 
|-
 
| 6
 
| VarInt
 
| Shaking Direction
 
|-
 
| 7
 
| Float
 
| Shaking Multiplier
 
|-
 
| 8
 
| VarInt
 
| Block ID and Meta
 
|-
 
| 9
 
| VarInt
 
| Block Y Position
 
|-
 
| 10
 
| Boolean
 
| Show Block
 
|-
 
|rowspan="2"| MinecartCommandBlock <sup>extends Minecart</sup>
 
| 11
 
| String
 
| Command
 
|-
 
| 12
 
| [[Chat]]
 
| Last Output
 
|-
 
| MinecartFurnace <sup>extends Minecart</sup>
 
| 11
 
| Boolean
 
| Is Powered
 
|-
 
| TNTPrimed <sup>extends Entity</sup>
 
| 5
 
| VarInt
 
| Fuse Time
 
|}
 
  
Entity classes also recursively use fields from classes they extend.
+
== Inventories ==
  
== Handshaking ==
+
No changes so far.
  
=== Clientbound ===
+
== Plugin Channels ==
  
 
No changes so far.
 
No changes so far.
 +
 +
== Handshake ==
  
 
=== Serverbound ===
 
=== Serverbound ===
Line 731: Line 337:
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="4"| 0x00
+
  | rowspan="4"| 0x00
  |rowspan="4"| Handshaking
+
  | rowspan="4"| Handshaking
  |rowspan="4"| Server
+
  | rowspan="4"| Server
 
  | Protocol Version
 
  | Protocol Version
  | VarInt
+
  | [[#Definitions:varint|VarInt]]
  | See [[protocol version numbers]] (currently {{Change|47|106}})
+
  | See [[protocol version numbers]] (currently 765 in Minecraft 1.20.4).
 
  |-
 
  |-
 
  | Server Address
 
  | Server Address
  | String
+
  | [[#Definitions:string|String]] (255)
  | hostname or IP, e.g. localhost or 127.0.0.1 (does this support IPv6?)
+
  | 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
 
  | Server Port
  | Unsigned Short
+
  | [[#Definitions:unsigned-short|Unsigned Short]]
  | default is 25565
+
  | Default is 25565. The Notchian server does not use this information.
 
  |-
 
  |-
 
  | Next State
 
  | Next State
  | VarInt Enum
+
  | [[#Definitions:varint|VarInt]] [[#Definitions:enum|Enum]]
  | 1 for [[#Status|status]], 2 for [[#Login|login]]
+
  | 1 for [[#Status|Status]], 2 for [[#Login|Login]]{{change||, 3 for [[#Login|Transfer]]}}.
 
  |}
 
  |}
  
== Play ==
+
== Status ==
  
 
=== Clientbound ===
 
=== Clientbound ===
  
==== Spawn Object ====
+
No changes so far.
  
Sent by the server when a vehicle or other object is created.
+
=== Serverbound ===
  
{| class="wikitable"
+
No changes so far.
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="12"| {{Change|0x0E|0x00}}
 
|rowspan="12"| Play
 
|rowspan="12"| Client
 
| Entity ID
 
| VarInt
 
| EID of the object
 
|- style="background-color: #d9ead3;"
 
| Object UUID
 
| UUID
 
|
 
|-
 
| Type
 
| Byte
 
| The type of object (see [[Entities#Objects]])
 
|-
 
| X
 
| {{Change|Int|Double}}
 
| X position as a Absolute position
 
|-
 
| Y
 
| {{Change|Int|Double}}
 
| Y position as a Absolute position
 
|-
 
| Z
 
| {{Change|Int|Double}}
 
| Z position as a Absolute position
 
|-
 
| Pitch
 
| Angle
 
|
 
|-
 
| Yaw
 
| Angle
 
|
 
|-
 
| Data
 
| Int
 
| Meaning dependent on the value of the Type field, see [[Object Data]] for details.
 
|-
 
| Velocity X
 
| {{Change|Optional Short|Short}}
 
| {{Change|Only sent if the Data field is nonzero.}} Same units as [[#Entity Velocity|Entity Velocity]].
 
|-
 
| Velocity Y
 
| {{Change|Optional Short|Short}}
 
| {{Change|Only sent if the Data field is nonzero.}} Same units as [[#Entity Velocity|Entity Velocity]].
 
|-
 
| Velocity Z
 
| {{Change|Optional Short|Short}}
 
| {{Change|Only sent if the Data field is nonzero.}} Same units as [[#Entity Velocity|Entity Velocity]].
 
|}
 
  
==== Spawn Mob ====
+
== Login ==
  
Sent by the server when a mob entity is spawned.
+
=== Clientbound ===
  
{| class="wikitable"
+
==== Cookie Request (login) ====
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="13"| {{Change|0x0F|0x03}}
 
|rowspan="13"| Play
 
|rowspan="13"| Client
 
| Entity ID
 
| VarInt
 
|
 
|- style="background-color: #d9ead3;"
 
| Entity UUID
 
| UUID
 
|
 
|-
 
| Type
 
| Unsigned Byte
 
| The type of mob. See [[Entities#Mobs]]
 
|-
 
| X
 
| {{Change|Int|Double}}
 
| X position as a Absolute position
 
|-
 
| Y
 
| {{Change|Int|Double}}
 
| Y position as a Absolute position
 
|-
 
| Z
 
| {{Change|Int|Double}}
 
| Z position as a Absolute position
 
|-
 
| Yaw
 
| Angle
 
|
 
|-
 
| Pitch
 
| Angle
 
|
 
|-
 
| Head Pitch
 
| Angle
 
|
 
|-
 
| Velocity X
 
| Short
 
| Same units as [[Protocol#Entity Velocity|Entity Velocity]]
 
|-
 
| Velocity Y
 
| Short
 
| Same units as [[Protocol#Entity Velocity|Entity Velocity]]
 
|-
 
| Velocity Z
 
| Short
 
| Same units as [[Protocol#Entity Velocity|Entity Velocity]]
 
|-
 
| Metadata
 
| [[#Entity Metadata|Entity Metadata]]
 
|
 
|}
 
 
 
==== Spawn Player ====
 
 
 
This packet is sent by the server when a player comes into visible range, ''not'' when a player joins.
 
 
 
This packet must be sent after the [[Protocol#Player List Item|Player List Item]] ([[#Play|Play]], 0x38, clientbound) packet that adds the player data for the client to use when spawning a player. If the Player List Item for the player spawned by this packet is not present when this packet arrives, Notchian clients will not spawn the player entity. The Player List Item packet includes skin/cape data.
 
 
 
Servers can, however, safely spawn player entities for players not in visible range. The client appears to handle it correctly.
 
 
 
When in online-mode the UUIDs must be valid and have valid skin blobs, in offline-mode UUID v3 is used.
 
 
 
For NPCs UUID v2 should be used. Note:
 
 
 
<+Grum> i will never confirm this as a feature you know that :)
 
  
In an example UUID, <code>xxxxxxxx-xxxx-Yxxx-xxxx-xxxxxxxxxxxx</code>, the UUID version is specified by <code>Y</code>. So, for UUID v3, <code>Y</code> will always be <code>3</code>, and for UUID v2, <code>Y</code> will always be <code>2</code>.
+
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="9"| {{Change|0x0C|0x05}}
+
  | rowspan="1"| 0x05
  |rowspan="9"| Play
+
  | rowspan="1"| Login
  |rowspan="9"| Client
+
  | rowspan="1"| Client
  | Entity ID
+
  | colspan="2"| Key
| VarInt
+
  | colspan="2"| Identifier
| Player's EID
+
  | The identifier of the cookie.
|-
 
| Player UUID
 
| UUID
 
|
 
|-
 
| X
 
| {{Change|Int|Double}}
 
| X position as a Absolute position
 
|-
 
| Y
 
| {{Change|Int|Double}}
 
| Y position as a Absolute position
 
  |-
 
| Z
 
| {{Change|Int|Double}}
 
| Z position as a Absolute position
 
|-
 
| Yaw
 
| Angle
 
|
 
|-
 
| Pitch
 
| Angle
 
|
 
|- style="background-color: #f4cccc; text-decoration: line-through;"
 
| Current Item
 
| Short
 
  | The item the player is currently holding. Note that this should be 0 for “no item”, unlike -1 used in other packets.
 
|-
 
| Metadata
 
| [[#Entity Metadata|Entity Metadata]]
 
|
 
 
  |}
 
  |}
  
==== {{Change||Boss Bar}} ====  
+
=== Serverbound ===
  
{| class="wikitable"
+
==== Cookie Response (login) ====
! Packet ID
 
! State
 
! Bound To
 
!colspan="2"| Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="15"| {{Change|0x49|0x0C}}
 
|rowspan="15"| Play
 
|rowspan="15"| Client
 
|colspan="2"| UUID
 
| UUID
 
| Unique ID for this bar
 
|-
 
|colspan="2"| Action
 
| VarInt Enum
 
| Determines the layout of the remaining packet
 
|-
 
! Action
 
! Field Name
 
!
 
!
 
|-
 
|rowspan="5"| 0: add
 
| Title
 
| [[Chat]]
 
|
 
|-
 
| Health
 
| Float
 
| From 0 to 1. Values greater than 1 do not crash the client, and start [https://i.johni0702.de/nA.png rendering part of a second health bar] at around 1.5.
 
|-
 
| Color
 
| VarInt Enum
 
| Color ID (see below)
 
|-
 
| Division
 
| VarInt Enum
 
| Type of division (see below)
 
|-
 
| Flags
 
| Unsigned Byte
 
| Bit mask: 0x1 should darken sky, 0x2: is dragon bar (used to play end music)
 
|-
 
| 1: remove
 
| ''no fields''
 
| ''no fields''
 
| Removes this boss bar
 
|-
 
| 2: update health
 
| Health
 
| Float
 
| as above
 
|-
 
| 3: update title
 
| Title
 
| [[Chat]]
 
|
 
|-
 
|rowspan="2"| 4: update style
 
| Color
 
| VarInt Enum
 
| Color ID (see below)
 
|-
 
| Dividers
 
| VarInt Enum
 
| as above
 
|-
 
| 5: update flags
 
| Flags
 
| Unsigned Byte
 
| as above
 
|-
 
|}
 
  
{| class="wikitable"
+
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.
! ID
 
! Color
 
|-
 
| 0
 
| Pink
 
|-
 
| 1
 
| Blue
 
|-
 
| 2
 
| Red
 
|-
 
| 3
 
| Green
 
|-
 
| 4
 
| Yellow
 
|-
 
| 5
 
| Purple
 
|-
 
| 6
 
| White
 
|}
 
 
 
{| class="wikitable"
 
! ID
 
! Type of division
 
|-
 
| 0
 
| No division
 
|-
 
| 1
 
| 6 notches
 
|-
 
| 2
 
| 10 notches
 
|-
 
| 3
 
| 12 notches
 
|-
 
| 4
 
| 20 notches
 
|}
 
 
 
==== {{Change||Set Cooldown}} ====
 
 
 
Applies a cooldown period to an item type.
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="2"| 0x17
 
|rowspan="2"| Play
 
|rowspan="2"| Client
 
| Item ID
 
| VarInt
 
| ID of the item to apply a cooldown to.
 
|-
 
| Cooldown Ticks
 
| VarInt
 
| Number of ticks to apply a cooldown for.
 
|}
 
 
 
==== Named Sound Effect ====
 
  
{| 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|0x2F|0x19}}
+
  | rowspan="3"| 0x04
  |rowspan="7"| Play
+
  | rowspan="3"| Login
  |rowspan="7"| Client
+
  | rowspan="3"| Server
  | Sound Name
+
  | colspan="2"| Key
| String
+
  | colspan="2"| Identifier
  | All known sound effect names can be seen [https://github.com/SirCmpwn/Craft.Net/blob/master/source/Craft.Net.Common/SoundEffect.cs here]
+
  | The identifier of the cookie.
|- style="background-color: #d9ead3;"
 
| Sound Category
 
| VarInt Enum
 
  | The category that this sound will be played from ([https://gist.github.com/konwboj/7c0c380d3923443e9d55 current categories])
 
|-
 
| Effect Position X
 
| Int
 
| Effect X multiplied by 8
 
|-
 
| Effect Position Y
 
| Int
 
| Effect Y multiplied by 8
 
|-
 
| Effect Position Z
 
| Int
 
| Effect Z multiplied by 8
 
 
  |-
 
  |-
  | Volume
+
  | colspan="2"| Has Payload
  | Float
+
  | colspan="2"| Boolean
  | 1 is 100%, can be more
+
  | The payload is only present if the cookie exists on the client.
 
  |-
 
  |-
  | Pitch
+
  | colspan="2"| Payload
  | Unsigned Byte
+
  | colspan="2"| Optional ByteArray(5120)
  | 63 is 100%, can be more
+
  | The data of the cookie, if any.
 
  |}
 
  |}
  
==== Entity Status ====
+
== Configuration ==
  
{| class="wikitable"
+
=== Clientbound ===
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="2"| {{Change|0x1A|0x1B}}
 
|rowspan="2"| Play
 
|rowspan="2"| Client
 
| Entity ID
 
| Int
 
|
 
|-
 
| Entity Status
 
| Byte Enum
 
| See below
 
|}
 
  
{| class="wikitable"
+
==== Cookie Request (configuration) ====
|-
 
! Entity Status
 
! Meaning
 
|-
 
| 1
 
| Sent when resetting a mob spawn minecart's timer — appears to be unused by the client
 
|-
 
| 2
 
| Living Entity hurt
 
|-
 
| 3
 
| Living Entity dead
 
|-
 
| 4
 
| Iron Golem throwing up arms
 
|-
 
| 6
 
| Wolf/Ocelot/Horse taming — Spawn “heart” particles
 
|-
 
| 7
 
| Wolf/Ocelot/Horse tamed — Spawn “smoke” particles
 
|-
 
| 8
 
| Wolf shaking water — Trigger the shaking animation
 
|-
 
| 9
 
| (of self) Eating accepted by server
 
|-
 
| 10
 
| Sheep eating grass
 
|-
 
| 10
 
| Play TNT ignite sound
 
|-
 
| 11
 
| Iron Golem handing over a rose
 
|-
 
| 12
 
| Villager mating — Spawn “heart” particles
 
|-
 
| 13
 
| Spawn particles indicating that a villager is angry and seeking revenge
 
|-
 
| 14
 
| Spawn happy particles near a villager
 
|-
 
| 15
 
| Witch animation — Spawn “magic” particles
 
|-
 
| 16
 
| Play zombie converting into a villager sound
 
|-
 
| 17
 
| Firework exploding
 
|-
 
| 18
 
| Animal in love (ready to mate) — Spawn “heart” particles
 
|-
 
| 19
 
| Reset squid rotation
 
|-
 
| 20
 
| Spawn explosion particle — works for some living entities
 
|-
 
| 21
 
| Play guardian sound — works for every entity
 
|-
 
| 22
 
| Enables reduced {{Minecraft Wiki|Debug screen|debug}} for players
 
|-
 
| 23
 
| Disables reduced {{Minecraft Wiki|Debug screen|debug}} for players
 
|- style="background-color: #d9ead3;"
 
| 24–28
 
| Sets {{Minecraft Wiki|Server.properties#op-permission-level|op permission level}} 0–4 for players
 
|}
 
 
 
==== {{Change||Unload Chunk}} ====
 
  
Tells the client to unload a chunk.
+
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"| 0x1D
+
  | rowspan="1"| 0x00
  |rowspan="2"| Play
+
  | rowspan="1"| Configuration
  |rowspan="2"| Client
+
  | rowspan="1"| Client
  | Chunk X
+
  | colspan="2"| Key
| Int
+
  | colspan="2"| Identifier
  | Chunk X coordinate
+
  | The identifier of the cookie.
|-
 
| Chunk Z
 
| Int
 
  | Chunk Z coordinate
 
 
  |}
 
  |}
  
==== Chunk Data ====
+
==== Store Cookie (configuration) ====
  
Chunk pillars are not unloaded by the client automatically. To unload chunk pillars, {{Change|send this packet with Ground-Up Continuous{{=}}true and no 16^3 chunks (eg. Primary Bit Mask{{=}}0)|send an [[#Unload Chunk|Unload Chunk]] packet with the chunk's X and Z coordinates}}. The server only sends skylight information for chunk pillars in the 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.
+
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="7"| {{Change|0x21|0x20}}
+
  | rowspan="2"| 0x09
  |rowspan="7"| Play
+
  | rowspan="2"| Configuration
  |rowspan="7"| Client
+
  | rowspan="2"| Client
  | Chunk X
+
  | colspan="2"| Key
| Int
+
  | colspan="2"| Identifier
  | Chunk X coordinate
+
  | The identifier of the cookie.
|-
 
| Chunk Z
 
| Int
 
  | Chunk Z coordinate
 
|-
 
| Ground-Up Continuous
 
| Boolean
 
| This is true if the packet represents all chunk sections in this vertical chunk column, where the Primary Bit Mask specifies exactly which chunk sections are included, and which are air.
 
|-
 
| Primary Bit Mask
 
| {{Change|Unsigned Short|VarInt}}
 
| Bitmask with bits set to 1 for every 16×16×16 chunk section whose data follows in the compressed 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, plus size of Biomes in bytes if present
 
 
  |-
 
  |-
  | Data
+
  | colspan="2"| Payload
  | Array of [[#Chunk Section|Chunk Section]]
+
  | colspan="2"| ByteArray(5120)
  | The length of the array is equal to the number of bits set in Primary Bit Mask.
+
  | The data of the cookie.
|-
 
| Biomes
 
| Optional Byte Array
 
| Only if Ground-Up Continuous: biome array, byte per XZ coordinate, 256 bytes total.
 
 
  |}
 
  |}
  
==== Map ====
+
==== Transfer (configuration) ====
  
Updates a rectangular area on a {{Minecraft Wiki|map}} item.
+
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
  !colspan="2"| Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="13"| {{Change|0x34|0x24}}
+
  | rowspan="2"| 0x0A
  |rowspan="13"| Play
+
  | rowspan="2"| Configuration
  |rowspan="13"| Client
+
  | rowspan="2"| Client
  |colspan="2"| Item Damage
+
  | colspan="2"| Host
  |colspan="2"| VarInt
+
  | colspan="2"| String
  | The damage value (map ID) of the map being modified
+
  | The hostname of IP of the server.
|-
 
|colspan="2"| Scale
 
|colspan="2"| Byte
 
| From 0 for a fully zoomed-in map (1 block per pixel) to 4 for a fully zoomed-out map (16 blocks per pixel)
 
|- style="background-color: #d9ead3;"
 
|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="3"| Icon
 
| Direction And Type
 
|rowspan="3"| Array
 
| Byte
 
| 0xF0 = Direction, 0x0F = Type
 
|-
 
| X
 
| Byte
 
|
 
 
  |-
 
  |-
| Z
+
  | colspan="2"| Port
| Byte
+
  | colspan="2"| VarInt
|
+
  | The port of the server.
|-
 
|colspan="2"| Columns
 
|colspan="2"| Byte
 
| Number of columns updated
 
|-
 
|colspan="2"| Rows
 
|colspan="2"| Optional Byte
 
| Only if Columns is more than 0; number of rows updated
 
|-
 
|colspan="2"| X
 
|colspan="2"| Optional Byte
 
| Only if Columns is more than 0; x offset of the westernmost column
 
|-
 
|colspan="2"| Z
 
|colspan="2"| Optional Byte
 
| Only if Columns is more than 0; z offset of the northernmost row
 
|-
 
  |colspan="2"| Length
 
  |colspan="2"| Optional VarInt
 
  | Only if Columns is more than 0; length of the following array
 
|-
 
|colspan="2"| Data
 
|colspan="2"| Optional Array of Byte Enum
 
| Only if Columns is more than 0; see {{Minecraft Wiki|Map item format}}
 
 
  |}
 
  |}
  
==== {{Change||Vehicle Move}} ====
+
=== Serverbound ===
 
 
Note that all fields use absolute positioning and do not allow for relative positioning.
 
  
{| class="wikitable"
+
==== Cookie Response (configuration) ====
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="7"| 0x29
 
|rowspan="7"| Play
 
|rowspan="7"| Client
 
| X
 
| Double
 
| Absolute position (X coordinate)
 
|-
 
| Y
 
| Double
 
| Absolute position (Y coordinate)
 
|-
 
| Z
 
| Double
 
| Absolute position (Z coordinate)
 
|-
 
| Yaw
 
| Float
 
| Absolute rotation on the vertical Axis, in degrees
 
|-
 
| Pitch
 
| Float
 
| Absolute rotation on the horizontal Axis, in degrees
 
|}
 
  
==== Combat Event ====
+
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
  !colspan="2"| Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="8"| {{Change|0x42|0x2C}}
+
  | rowspan="3"| 0x01
  |rowspan="8"| Play
+
  | rowspan="3"| Configuration
  |rowspan="8"| Client
+
  | rowspan="3"| Server
  |colspan="2"| Event
+
  | colspan="2"| Key
  | VarInt Enum
+
  | colspan="2"| Identifier
| Determines the layout of the remaining packet
+
  | The identifier of the cookie.
|-
 
! Event
 
! Field Name
 
!
 
!
 
|-
 
| 0: enter combat
 
| ''no fields''
 
| ''no fields''
 
|
 
|-
 
|rowspan="2"| 1: end combat
 
| Duration
 
| VarInt
 
|
 
|-
 
| Entity ID
 
| Int
 
|
 
|-
 
|rowspan="3"| 2: entity dead
 
| Player ID
 
| VarInt
 
  |  
 
 
  |-
 
  |-
  | Entity ID
+
  | colspan="2"| Has Payload
  | Int
+
  | colspan="2"| Boolean
  |  
+
  | The payload is only present if the cookie exists on the client.
 
  |-
 
  |-
  | Message
+
  | colspan="2"| Payload
  | {{Change|String|[[Chat]]}}
+
  | colspan="2"| Optional ByteArray(5120)
  |  
+
  | The data of the cookie, if any.
 
  |}
 
  |}
  
==== Player Position And Look ====  
+
== Play ==
  
Updates the player's position on the server.
+
=== Clientbound ===
  
If the distance between the last known position of the player on the server and the new position set by this packet is greater than 100 meters, the client will be kicked for “You moved too quickly :( (Hacking?)”.
+
==== Cookie Request (play) ====
  
Also if the fixed-point number of X or Z is set greater than <code>3.2E7D</code> the client will be kicked for “Illegal position”.
+
Requests a cookie that was previously stored.
  
Yaw is measured in degrees, and does not follow classical trigonometry rules. The unit circle of yaw on the XZ-plane starts at (0, 1) and turns counterclockwise, with 90 at (-1, 0), 180 at (0, -1) and 270 at (1, 0). Additionally, yaw is not clamped to between 0 and 360 degrees; any number is valid, including negative numbers and numbers greater than 360.
+
{| class="wikitable" {{added}}
 
 
Pitch is measured in degrees, where 0 is looking straight ahead, -90 is looking straight up, and 90 is looking straight down.
 
 
 
The yaw in degrees of a player standing at point (x0, z0) and looking towards point (x, z) can be calculated with:
 
 
 
l = x-x0
 
w = z-z0
 
c = sqrt( l*l + w*w )
 
alpha1 = -arcsin(l/c)/PI*180
 
alpha2 =  arccos(w/c)/PI*180
 
if alpha2 > 90 then
 
    yaw = 180 - alpha1
 
else
 
    yaw = alpha1
 
 
 
You can get a unit vector from a given yaw/pitch via:
 
 
 
x = -cos(pitch) * sin(yaw)
 
y = -sin(pitch)
 
z =  cos(pitch) * cos(yaw)
 
 
 
{| 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|0x08|0x2E}}
+
  | rowspan="1"| 0x16
  |rowspan="7"| Play
+
  | rowspan="1"| Play
  |rowspan="7"| Client
+
  | rowspan="1"| Client
  | X
+
  | colspan="2"| Key
| Double
+
  | colspan="2"| Identifier
| Absolute or relative position, depending on Flags
+
  | The identifier of the cookie.
|-
 
| Y
 
| Double
 
| Absolute or relative position, depending on Flags
 
|-
 
| Z
 
| Double
 
| Absolute or relative position, depending on Flags
 
|-
 
  | Yaw
 
| Float
 
| Absolute or relative rotation on the X Axis, in degrees
 
|-
 
| Pitch
 
| Float
 
| Absolute or relative rotation on the Y Axis, in degrees
 
|-
 
| Flags
 
| Byte
 
| Bit field, see below
 
|- style="background-color: #d9ead3;"
 
| Teleport ID
 
  | VarInt
 
| Client should confirm this packet with [[#Teleport Confirm|Teleport Confirm]] containing the same Teleport ID
 
 
  |}
 
  |}
  
About the Flags field:
+
==== Store Cookie (play) ====
  
<Dinnerbone> It's a bitfield, X/Y/Z/Y_ROT/X_ROT. If X is set, the x value is relative and not absolute.
+
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}}
|-
 
! Field
 
! Bit
 
|-
 
| X
 
| 0x01
 
|-
 
| Y
 
| 0x02
 
|-
 
| Z
 
| 0x04
 
|-
 
| Y_ROT
 
| 0x08
 
|-
 
| X_ROT
 
| 0x10
 
|}
 
 
 
==== Entity Equipment ====
 
 
 
{| class="wikitable"
 
 
  ! Packet ID
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
! Field Type
+
  ! colspan="2"| Field Type
! Notes
 
|-
 
|rowspan="3"| {{Change|0x04|0x3C}}
 
  |rowspan="3"| Play
 
|rowspan="3"| Client
 
| Entity ID
 
| VarInt
 
| Entity's EID
 
|-
 
| Slot
 
| {{Change|Short|VarInt}} Enum
 
| Equipment slot. 0: main hand, {{Change||1: off hand}}, {{Change|1–4|2–5}}: armor slot (2: boots, 3: leggings, 4: chestplate, 5: helmet)
 
|-
 
| Item
 
| [[Slot Data|Slot]]
 
|
 
|}
 
 
 
==== {{Change||Set Passengers}} ====
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="2"| 0x40
+
  | rowspan="2"| 0x6A
  |rowspan="2"| Play
+
  | rowspan="2"| Play
  |rowspan="2"| Client
+
  | rowspan="2"| Client
  | Entity ID
+
  | colspan="2"| Key
  | VarInt
+
  | colspan="2"| Identifier
  | Vehicle's EID
+
  | The identifier of the cookie.
 
  |-
 
  |-
  | Passengers
+
  | colspan="2"| Payload
  | Array of VarInt
+
  | colspan="2"| ByteArray(5120)
  | EIDs of entity's passengers
+
  | 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
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="11"| {{Change|0x3E|0x41}}
+
  | rowspan="2"| 0x72
  |rowspan="11"| Play
+
  | rowspan="2"| Play
  |rowspan="11"| Client
+
  | rowspan="2"| Client
  | Team Name
+
  | colspan="2"| Host
| String
+
  | colspan="2"| String
| A unique name for the team. (Shared with scoreboard).
+
  | The hostname of IP of the server.
|-
 
| Mode
 
| Byte Enum
 
| 0: create team, 1: remove team, 2: update team info; 3: add players to team; 4: remove players from team
 
|-
 
| Team Display Name
 
  | Optional String
 
| Only if Mode is 0 or 2.
 
|-
 
| Team Prefix
 
| Optional String
 
| Only if Mode is 0 or 2. Displayed before the players' name that are part of this team.
 
|-
 
| Team Suffix
 
| Optional String
 
| Only if Mode is 0 or 2. Displayed after the players' name that are part of this team.
 
|-
 
| Friendly Fire
 
| Optional Byte
 
| Only if Mode is 0 or 2. 0 for off, 1 for on, 3 for seeing friendly invisibles.
 
|-
 
| Name Tag Visibility
 
| Optional String
 
| Only if Mode is 0 or 2. <code>always</code>, <code>hideForOtherTeams</code>, <code>hideForOwnTeam</code>, <code>never</code>.
 
|- style="background-color: #d9ead3;"
 
| Collision Rule
 
| Optional String
 
  | Only if Mode is 0 or 2. <code>always</code>, <code>hideForOtherTeams</code> ''(sic)'', <code>hideForOwnTeam</code> ''(sic)'', <code>never</code>
 
|-
 
| Color
 
| Optional Byte
 
| Only if Mode is 0 or 2. Same as [[Chat]] colors.
 
|-
 
| Player Count
 
| Optional VarInt
 
| Only if Mode is 0 or 3 or 4. Number of players in the array.
 
 
  |-
 
  |-
  | Players
+
  | colspan="2"| Port
  | Optional Array of String
+
  | colspan="2"| VarInt
  | Only if Mode is 0 or 3 or 4. Players to be added/remove from the team. Max 40 characters so may be uuid's later.
+
  | The port of the server.
 
  |}
 
  |}
  
==== {{Change||Sound Effect}} ====
+
==== Update Attributes ====
  
{| class="wikitable"
+
Sets {{Minecraft Wiki|Attribute|attributes}} on the given entity.
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="7"| 0x47
 
|rowspan="7"| Play
 
|rowspan="7"| Client
 
| Sound ID
 
| VarInt
 
| ID of hardcoded sound event ([https://gist.github.com/Cybermaxke/7c21d9c818079bacd42b events])
 
|-
 
| Sound Category
 
| VarInt Enum
 
| The category that this sound will be played from ([https://gist.github.com/konwboj/7c0c380d3923443e9d55 current categories])
 
|-
 
| Effect Position X
 
| Int
 
| Effect X multiplied by 8
 
|-
 
| Effect Position Y
 
| Int
 
| Effect Y multiplied by 8
 
|-
 
| Effect Position Z
 
| Int
 
| Effect Z multiplied by 8
 
|-
 
| Volume
 
| Float
 
| 1.0 is 100%, capped between 0.0 and 1.0 by vanilla client
 
|-
 
| Pitch
 
| Unsigned Byte
 
| Float multiplied by 63.5, capped between 0.5 and 2.0 by vanilla client
 
|}
 
 
 
==== Entity Properties ====
 
  
 
{| class="wikitable"
 
{| class="wikitable"
Line 1,716: Line 603:
 
  ! 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|0x20|0x4B}}
+
  | rowspan="6"| 0x71
  |rowspan="6"| Play
+
  | rowspan="6"| Play
  |rowspan="6"| Client
+
  | rowspan="6"| Client
  |colspan="2"| Entity ID
+
  | colspan="2"| Entity ID
  |colspan="2"| VarInt
+
  | colspan="2"| VarInt
  |  
+
  |
 
  |-
 
  |-
  |colspan="2"| Number Of Properties
+
  | colspan="2"| Number Of Properties
  |colspan="2"| Int
+
  | colspan="2"| VarInt
  | Number of elements in the following array
+
  | Number of elements in the following array.
 
  |-
 
  |-
  |rowspan="4"| Property
+
  | rowspan="4"| Property
  | Key
+
  | {{change|Key|Id}}
  |rowspan="4"| Array
+
  | rowspan="4"| Array
  | String
+
  | {{change|Identifier|VarInt Enum}}
  | See below
+
  | See below.
 
  |-
 
  |-
 
  | Value
 
  | Value
 
  | Double
 
  | Double
  | See below
+
  | See below.
 
  |-
 
  |-
 
  | Number Of Modifiers
 
  | Number Of Modifiers
 
  | VarInt
 
  | VarInt
  | Number of elements in the following array
+
  | Number of elements in the following array.
 
  |-
 
  |-
 
  | Modifiers
 
  | Modifiers
Line 1,754: Line 641:
 
{| class="wikitable"
 
{| class="wikitable"
 
  |-
 
  |-
 +
! Id
 
  ! Key
 
  ! Key
 
  ! Default
 
  ! Default
Line 1,760: Line 648:
 
  ! Label
 
  ! Label
 
  |-
 
  |-
  | generic.maxHealth
+
| 0
 +
  | generic.armor
 +
| 0.0
 +
| 0.0
 +
| 30.0
 +
| Armor.
 +
|-
 +
| 1
 +
| generic.armor_toughness
 +
| 0.0
 +
| 0.0
 
  | 20.0
 
  | 20.0
 +
| Armor Toughness.
 +
|-
 +
| 2
 +
| generic.attack_damage
 +
| 2.0
 
  | 0.0
 
  | 0.0
  | {{Change|Double.MaxValue|1024.0}}
+
  | 2048.0
  | Max Health
+
  | Attack Damage.
 
  |-
 
  |-
  | generic.followRange
+
| 3
 +
  | generic.attack_knockback
 +
| 0.0
 +
| 0.0
 +
| 5.0
 +
| Attack Knockback.
 +
|-
 +
| 4
 +
| generic.attack_speed
 +
| 4.0
 +
| 0.0
 +
| 1024.0
 +
| Attack Speed.
 +
|- {{added}}
 +
| 5
 +
| generic.block_interaction_range
 +
| 4.5
 +
| 0.0
 +
| 64.0
 +
| Block Interaction Range.
 +
|- {{added}}
 +
| 6
 +
| generic.entity_interaction_range
 +
| 3.0
 +
| 0.0
 +
| 64.0
 +
| Entity Interaction Range.
 +
|-
 +
| 7
 +
| generic.flying_speed
 +
| 0.4
 +
| 0.0
 +
| 1024.0
 +
| Flying Speed.
 +
|-
 +
| 8
 +
| generic.follow_range
 
  | 32.0
 
  | 32.0
 
  | 0.0
 
  | 0.0
 
  | 2048.0
 
  | 2048.0
  | Follow Range
+
  | Follow Range.
 
  |-
 
  |-
  | generic.knockbackResistance
+
| 9
  | 0.0  
+
| horse.jump_strength
 +
| 0.7
 +
| 0.0
 +
| 2.0
 +
| Jump Strength.
 +
|-
 +
| 10
 +
  | generic.knockback_resistance
 +
  | 0.0
 
  | 0.0
 
  | 0.0
 
  | 1.0
 
  | 1.0
  | Knockback Resistance
+
  | Knockback Resistance.
 
  |-
 
  |-
  | generic.movementSpeed
+
  | 11
  | 0.699999988079071
+
  | generic.luck
 
  | 0.0
 
  | 0.0
  | {{Change|Double.MaxValue|1024.0}}
+
  | -1024.0
  | Movement Speed
+
| 1024.0
 +
  | Luck.
 
  |-
 
  |-
  | generic.attackDamage
+
  | 12
  | 2.0
+
  | generic.max_absorption
 
  | 0.0
 
  | 0.0
| {{Change|Double.MaxValue|2048.0}}
 
| {{Change||Attack Damage}}
 
|- style="background-color: #d9ead3;"
 
| generic.attackSpeed
 
| 4.0
 
 
  | 0.0
 
  | 0.0
 +
| 2048.0
 +
| Max Absorption.
 +
|-
 +
| 13
 +
| generic.max_health
 +
| 20.0
 +
| 1.0
 
  | 1024.0
 
  | 1024.0
  | Attack Speed
+
  | Max Health.
 
  |-
 
  |-
  | horse.jumpStrength
+
  | 14
 +
| generic.movement_speed
 
  | 0.7
 
  | 0.7
 
  | 0.0
 
  | 0.0
  | 2.0
+
  | 1024.0
  | Jump Strength
+
  | Movement Speed.
 +
|- {{added}}
 +
| 15
 +
| generic.scale
 +
| 1.0
 +
| 0.0625
 +
| 16.0
 +
| Scale.
 
  |-
 
  |-
  | zombie.spawnReinforcements
+
| 16
 +
  | zombie.spawn_reinforcements
 
  | 0.0
 
  | 0.0
 
  | 0.0
 
  | 0.0
 
  | 1.0
 
  | 1.0
  | Spawn Reinforcements Chance
+
  | Spawn Reinforcements Chance.
 +
|- {{added}}
 +
| 17
 +
| generic.step_height
 +
| 0.6
 +
| 0.0
 +
| 10.0
 +
| Step Height.
 
  |}
 
  |}
  
Line 1,819: Line 785:
 
  | UUID
 
  | UUID
 
  | UUID
 
  | UUID
  |  
+
  |
 
  |-
 
  |-
 
  | Amount
 
  | Amount
 
  | Double
 
  | Double
  |  
+
  | May be positive or negative.
 
  |-
 
  |-
 
  | Operation
 
  | Operation
 
  | Byte
 
  | Byte
  |  
+
  | See below.
 
  |}
 
  |}
  
==== {{Change|Map Chunk Bulk|}} ====
+
The operation controls how the base value of the modifier is changed.
 
 
Replaced by multiple [[#Chunk Data|Chunk Data]] packets.
 
 
 
==== {{Change|Update Entity NBT|}} ====
 
 
 
Wasn't used for anything.
 
  
=== Serverbound ===
+
* 0: Add/subtract amount
 +
* 1: Add/subtract amount percent of the current value
 +
* 2: Multiply by amount percent
  
==== {{Change||Teleport Confirm}} ====
+
All of the 0's are applied first, and then the 1's, and then the 2's.
  
Sent by client as confirmation of [[#Player Position And Look|Player Position And Look]] packet.
+
==== Entity Effect ====
  
 
{| class="wikitable"
 
{| class="wikitable"
Line 1,852: Line 814:
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="1"| 0x00
+
  | rowspan="7"| 0x72
  |rowspan="1"| Play
+
  | rowspan="7"| Play
  |rowspan="1"| Server
+
  | rowspan="7"| Client
  | Teleport ID
+
  | Entity ID
 
  | VarInt
 
  | VarInt
  |  
+
  |
|}
 
 
 
==== Tab-Complete ====
 
 
 
Sent when the user presses ''tab'' while writing text.
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
 
  |-
 
  |-
  |rowspan="4"| {{Change|0x14|0x01}}
+
  | Effect ID
|rowspan="4"| Play
+
  | VarInt
  |rowspan="4"| Server
+
  | See {{Minecraft Wiki|Status effect#Effect list|this table}}.
  | Text
 
| String
 
| All text behind the cursor (e.g. to the left of the cursor in left-to-right languages like English)
 
|- style="background-color: #d9ead3;"
 
| 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.
 
 
  |-
 
  |-
  | Has Position
+
  | Amplifier
  | Boolean
+
  | Byte
  |  
+
  | Notchian client displays effect level as Amplifier + 1.
 
  |-
 
  |-
  | Looked At Block
+
  | Duration
  | Optional Position
+
  | VarInt
  | The position of the block being looked at. Only sent if Has Position is true.
+
  | Duration in ticks. (-1 for infinite)
|}
 
 
 
==== Client Status ====
 
 
 
Sent when the client is ready to complete login and when the client is ready to respawn after death.
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
 
  |-
 
  |-
  |rowspan="1"| {{Change|0x16|0x03}}
+
  | Flags
|rowspan="1"| Play
 
|rowspan="1"| Server
 
| Action ID
 
| VarInt Enum
 
| See below
 
|}
 
 
 
''Action ID'' values:
 
 
 
{| class="wikitable"
 
|-
 
! Action ID
 
! Action
 
|-
 
| 0
 
| Perform respawn
 
|-
 
| 1
 
| Request stats
 
|-
 
| 2
 
| {{Change|''Taking Inventory'' achievement|Open Inventory}}
 
|}
 
 
 
==== Client Settings ====
 
 
 
Sent when the player connects, or when settings are changed.
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="6"| {{Change|0x15|0x04}}
 
|rowspan="6"| Play
 
|rowspan="6"| Server
 
| Locale
 
| String
 
| e.g. en_GB
 
|-
 
| View Distance
 
 
  | Byte
 
  | Byte
  | Client-side render distance, in chunks
+
  | Bit field, see below.
  |-
+
  |- {{removed}}
| Chat Mode
+
  | Has Factor Data
| {{Change|Byte|VarInt}} Enum
 
| 0: enabled, 1: commands only, 2: hidden
 
|-
 
  | Chat Colors
 
 
  | Boolean
 
  | Boolean
  | “Colors” multiplayer setting
+
  | Used in DARKNESS effect
  |-
+
  |- {{removed}}
  | Displayed Skin Parts
+
  | Factor Codec
  | Unsigned Byte
+
  | NBT Tag
  | Skin parts, see note below
+
  | See below
|- style="background-color: #d9ead3;"
 
| Main Hand
 
| VarInt Enum
 
| 0: Left, 1: Right
 
 
  |}
 
  |}
  
''Displayed Skin Parts'' flags:
+
{{Need Info|What exact effect does the blend bit flag have on the client? What happens if it is used on effects besides DARKNESS?}}
 
 
* Bit 0 (0x01): Cape enabled
 
* Bit 1 (0x02): Jacket enabled
 
* Bit 2 (0x04): Left Sleeve enabled
 
* Bit 3 (0x08): Right Sleeve enabled
 
* Bit 4 (0x10): Left Pants Leg enabled
 
* Bit 5 (0x20): Right Pants Leg enabled
 
* Bit 6 (0x40): Hat enabled
 
 
 
The most significant bit (bit 7, 0x80) appears to be unused.
 
 
 
==== Use Entity ====
 
 
 
This packet is sent from the client to the server when the client attacks or right-clicks another entity (a player, minecart, etc).
 
  
A Notchian server only accepts this packet if the entity being attacked/used is visible without obstruction and within a 4-unit radius of the player's position.
+
Within flags:
  
Note that middle-click in creative mode is interpreted by the client and sent as a [[#Creative Inventory Action|Creative Inventory Action]] packet instead.
+
* 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
 
 
  |-
 
  |-
  |rowspan="6"| {{Change|0x02|0x0A}}
+
  | padding_duration
|rowspan="6"| Play
+
  | TAG_INT
|rowspan="6"| Server
+
  |
| Target
 
  | VarInt
 
  |  
 
 
  |-
 
  |-
  | Type
+
  | factor_start
  | VarInt Enum
+
  | TAG_FLOAT
  | 0: interact, 1: attack, 2: interact at
+
  |
|-
 
| Target X
 
| Optional Float
 
| Only if Type is interact at
 
|-
 
| Target Y
 
| Optional Float
 
| Only if Type is interact at
 
|-
 
| Target Z
 
| Optional Float
 
| Only if Type is interact at
 
|- style="background-color: #d9ead3;"
 
| Hand
 
| Optional VarInt Enum
 
| Only if Type is interact or interact at; 0: main hand, 1: off hand
 
|}
 
 
 
==== {{Change||Vehicle Move (serverbound)}} ====
 
 
 
Sent when a player moves in a vehicle. Fields are the same as in [[#Player Position And Look|Player Position And Look]]. Note that all fields use absolute positioning and do not allow for relative positioning.
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="7"| 0x10
 
|rowspan="7"| Play
 
|rowspan="7"| Server
 
| X
 
| Double
 
| Absolute position (X coordinate)
 
|-
 
| Y
 
| Double
 
| Absolute position (Y coordinate)
 
|-
 
| Z
 
| Double
 
| Absolute position (Z coordinate)
 
|-
 
| Yaw
 
| Float
 
| Absolute rotation on the vertical Axis, in degrees
 
|-
 
| Pitch
 
| Float
 
| Absolute rotation on the horizontal Axis, in degrees
 
|}
 
 
 
==== {{Change||Steer Boat}} ====
 
 
 
 
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
 
  |-
 
  |-
  |rowspan="2"| 0x11
+
  | factor_target
|rowspan="2"| Play
+
  | TAG_FLOAT
|rowspan="2"| Server
 
| Boolean
 
  | Unknown
 
 
  |
 
  |
 
  |-
 
  |-
  | Boolean
+
  | factor_current
  | Unknown 2
+
  | TAG_FLOAT
 
  |
 
  |
|}
 
 
==== Player Digging ====
 
 
Sent when the player mines a block. A Notchian server only accepts digging packets with coordinates within a 6-unit radius of the player's position.
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
 
  |-
 
  |-
  |rowspan="3"| {{Change|0x07|0x13}}
+
  | effect_changed_timestamp
|rowspan="3"| Play
+
  | TAG_INT
|rowspan="3"| Server
 
| Status
 
| Byte Enum
 
  | The action the player is taking against the block (see below)
 
 
  |-
 
  |-
  | Location
+
  | factor_previous_frame
  | Position
+
  | TAG_FLOAT
| Block position
 
 
  |-
 
  |-
  | Face
+
  | had_effect_last_tick
  | Byte Enum
+
  | TAG_BOOLEAN
| The face being hit (see below)
 
 
  |}
 
  |}
  
Status can be one of seven values:
+
=== Serverbound ===
  
{| class="wikitable"
+
==== Cookie Response (play) ====
! Value
 
! Meaning
 
! Notes
 
|-
 
| 0
 
| Started digging
 
|
 
|-
 
| 1
 
| Cancelled digging
 
| Sent when the player lets go of the Mine Block key (default: left click)
 
|-
 
| 2
 
| Finished digging
 
| Sent when the client thinks it is finished
 
|-
 
| 3
 
| Drop item stack
 
| Triggered by using the Drop Item key (default: Q) with the modifier to drop the entire selected stack (default: depends on OS). Location is always set to 0/0/0, Face is always set to -Y.
 
|-
 
| 4
 
| Drop item
 
| Triggered by using the Drop Item key (default: Q). Location is always set to 0/0/0, Face is always set to -Y.
 
|-
 
| 5
 
| Shoot arrow / finish eating
 
| Location is always set to 0/0/0, Face is always set to Special.
 
|- style="background-color: #d9ead3;"
 
| 6
 
| Swap item in hand
 
| Used to swap or assign an item to the second hand. Location is always set to 0/0/0, Face is always set to -Y.
 
|}
 
  
The Face field can be one of the following values, representing the face being hit (or the Special value used for “shoot arrow / finish eating”):
+
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}}
|-
 
! Value
 
! Offset
 
! Face
 
|-
 
| 0
 
| -Y
 
| Bottom
 
|-
 
| 1
 
| +Y
 
| Top
 
|-
 
| 2
 
| -Z
 
| North
 
|-
 
| 3
 
| +Z
 
| South
 
|-
 
| 4
 
| -X
 
| West
 
|-
 
| 5
 
| +X
 
| East
 
|-
 
| 255
 
| —
 
| Special
 
|}
 
 
 
==== Entity Action ====
 
 
 
Sent at least when crouching, leaving a bed, or sprinting. To send action animation to client use 0x28. The client will send this with Action ID = 3 when “Leave Bed” is clicked.
 
 
 
{| 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"| {{Change|0x0B|0x14}}
+
  | rowspan="3"| 0x6A
  |rowspan="3"| Play
+
  | rowspan="3"| Play
  |rowspan="3"| Server
+
  | rowspan="3"| Server
  | Entity ID
+
  | colspan="2"| Key
  | VarInt
+
  | colspan="2"| Identifier
  | Player ID
+
  | The identifier of the cookie.
 
  |-
 
  |-
  | Action ID
+
  | colspan="2"| Has Payload
  | VarInt Enum
+
  | colspan="2"| Boolean
  | The ID of the action, see below
+
  | The payload is only present if the cookie exists on the client.
 
  |-
 
  |-
  | Jump Boost
+
  | colspan="2"| Payload
  | VarInt
+
  | colspan="2"| Optional ByteArray(5120)
  | Horse jump boost. Ranged from 0 to 100.
+
  | The data of the cookie, if any.
 
  |}
 
  |}
  
Action ID can be one of the following values:
+
[[Category:Minecraft Modern]]
 
 
{| class="wikitable"
 
! ID
 
! Action
 
|-
 
| 0
 
| Crouch
 
|-
 
| 1
 
| Uncrouch
 
|-
 
| 2
 
| Leave bed
 
|-
 
| 3
 
| Start sprinting
 
|-
 
| 4
 
| Stop sprinting
 
|-
 
| 5
 
| Start Jump with horse
 
|-
 
| 6
 
| Stop Jump with horse
 
|-
 
| 7
 
| Open ridden horse inventory
 
|-
 
| 8
 
| Start Elytra Flying
 
|}
 
 
 
“Open inventory” is now sent via the [[#Client Status|Client Status]] packet.
 
 
 
==== Update Sign ====
 
 
 
This message is sent from the client to the server when the “Done” button is pushed after placing a sign.
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="5"| {{Change|0x12|0x19}}
 
|rowspan="5"| Play
 
|rowspan="5"| Server
 
| Location
 
| Position
 
| Block Coordinates
 
|-
 
| Line 1
 
| {{Change|[[Chat]]|String}}
 
| First line of text in the sign
 
|-
 
| Line 2
 
| {{Change|[[Chat]]|String}}
 
| Second line of text in the sign
 
|-
 
| Line 3
 
| {{Change|[[Chat]]|String}}
 
| Third line of text in the sign
 
|-
 
| Line 4
 
| {{Change|[[Chat]]|String}}
 
| Fourth line of text in the sign
 
|}
 
 
 
==== Animation ====
 
 
 
Sent when the player's arm swings.
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="1"| {{Change|0x0A|0x1A}}
 
|rowspan="1"| Play
 
|rowspan="1"| Server
 
|style="background-color: #d9ead3;"| Hand
 
|style="background-color: #d9ead3;"| VarInt Enum
 
|style="background-color: #d9ead3;"| Hand used for the animation
 
|}
 
 
 
==== Player Block Placement ====
 
 
 
{| class="wikitable"
 
|-
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="7"| {{Change|0x08|0x1C}}
 
|rowspan="7"| Play
 
|rowspan="7"| Server
 
| Location
 
| Position
 
| Block position
 
|-
 
| Face
 
| {{Change|Byte|VarInt}} Enum
 
| The face on which the block is placed (as documented at [[#Player Digging|Player Digging]])
 
|- style="background-color: #f4cccc; text-decoration: line-through;"
 
| Held Item
 
| [[Slot Data|Slot]]
 
|
 
|- style="background-color: #d9ead3;"
 
| Hand
 
| VarInt Enum
 
| The hand from which the block is placed; 0: main hand, 1: off hand
 
|-
 
| Cursor Position X
 
| Unsigned Byte
 
| The position of the crosshair on the block, from 0 to 15 increasing from west to east
 
|-
 
| Cursor Position Y
 
| Unsigned Byte
 
| The position of the crosshair on the block, from 0 to 15 increasing from bottom to top
 
|-
 
| Cursor Position Z
 
| Unsigned Byte
 
| The position of the crosshair on the block, from 0 to 15 increasing from north to south
 
|}
 
 
 
In normal operation (i.e. placing a block), this packet is sent once, with the values set normally.
 
 
 
The Cursor Position X/Y/Z fields (also known as in-block coordinates) are calculated using raytracing. The unit corresponds to one pixel in the default resource pack. For example, let's say a slab is being placed against the south face of a full block. The Cursor Position X will be higher if the player was pointing near the right (east) edge of the face, lower if pointing near the left. The Cursor Position Y will be used to determine whether it will appear as a bottom slab (values 0–7) or as a top slab (values 8–15). The Cursor Position Z should be 15 since the player was looking at the southernmost part of the block.
 
 
 
This packet has a special case where X, Y, Z, and Direction are all -1. (Note that Y is unsigned so set to 255.) This special packet indicates that the currently held item for the player should have its state updated such as eating food, pulling back bows, using buckets, etc.
 
 
 
Special note on using buckets: When using buckets, the Notchian client might send two packets: first a normal and then a special case. The first normal packet is sent when you're looking at a block (e.g. the water you want to scoop up). This normal packet does not appear to do anything with a Notchian server. The second, special case packet appears to perform the action — based on current position/orientation and with a distance check — it appears that buckets can only be used within a radius of 6 units.
 
 
 
==== {{Change||Use Item}} ====
 
 
 
Sent when pressing the Use Item key (default: right click) with an item in hand.
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="1"| 0x1D
 
|rowspan="1"| Play
 
|rowspan="1"| Server
 
| Hand
 
| VarInt Enum
 
| Hand used for the animation
 
|}
 
 
 
== Status ==
 
 
 
=== Clientbound ===
 
 
 
No changes so far.
 
 
 
=== Serverbound ===
 
 
 
No changes so far.
 
 
 
== Login ==
 
 
 
=== Clientbound ===
 
 
 
No changes so far.
 
 
 
=== Serverbound ===
 
 
 
No changes so far.
 

Latest revision as of 05:25, 26 February 2024

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

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

Contents

Data types

No changes so far.

Packets

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

New/modified data types

No changes so far.

Entity Metadata

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

Armadillo

Extends Animal.

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

Block Actions

No changes so far.

Inventories

No changes so far.

Plugin Channels

No changes so far.

Handshake

Serverbound

Handshake

This causes the server to switch into the target state.

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

Status

Clientbound

No changes so far.

Serverbound

No changes so far.

Login

Clientbound

Cookie Request (login)

Requests a cookie that was previously stored.

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

Serverbound

Cookie Response (login)

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

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

Configuration

Clientbound

Cookie Request (configuration)

Requests a cookie that was previously stored.

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

Store Cookie (configuration)

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

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

Transfer (configuration)

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

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

Serverbound

Cookie Response (configuration)

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

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

Play

Clientbound

Cookie Request (play)

Requests a cookie that was previously stored.

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

Store Cookie (play)

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

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

Transfer (play)

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

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

Update Attributes

Sets attributes on the given entity.

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

Known Key values (see also Attribute#Modifiers):

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

Modifier Data structure:

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

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

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

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

Entity Effect

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

Within flags:

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

Factor Data

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

Serverbound

Cookie Response (play)

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

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