Difference between revisions of "Pre-release protocol"

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(1.12-pre3 to the best of my knowledge)
(→‎Entity Metadata: Merge changes from stable docs to incorporate new metadata type templates. Fix my earlier mistake on Pose in the process.)
 
(779 intermediate revisions by 49 users not shown)
Line 1: Line 1:
This page documents the changes from the [[Protocol|last stable Minecraft release]] (currently [[Protocol version numbers|1.11.2, protocol 316]]) to the current pre-release (currently [[Protocol version numbers|1.12-pre3, protocol 330]]). 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 18: Line 18:
 
  !colspan="2"| Documentation
 
  !colspan="2"| Documentation
 
  |-
 
  |-
  !colspan="4"| Handshaking serverbound
+
  !colspan="4"| Handshake serverbound
 
  {{PacketList|0x00|Handshake}}
 
  {{PacketList|0x00|Handshake}}
 +
|-
 +
!colspan="4"| Login clientbound
 +
{{PacketList|0x05|Cookie Request (login)|rel=added}}
 +
|-
 +
!colspan="4"| Login serverbound
 +
{{PacketList|0x04|Cookie Response (login)|rel=added}}
 +
|-
 +
!colspan="4"| Configuration clientbound
 +
{{PacketList|0x00|Cookie Request (configuration)|rel=added}}
 +
{{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"| Configuration serverbound
 +
{{PacketList|0x01|Cookie Response (configuration)|rel=added}}
 +
{{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"| Play clientbound
 
  !colspan="4"| Play clientbound
  {{PacketList|0x08|Advancements|rel=added}}
+
  {{PacketList|0x16|Cookie Request (Play)|rel=added}}
  {{PacketList|{{Change|0x08|0x09}}|Block Break Animation|pre=unchanged}}
+
  {{PacketList|{{change|0x16|0x17}}|Set Cooldown|pre=unchanged}}
  {{PacketList|{{Change|0x09|0x0A}}|Update Block Entity}}
+
  {{PacketList|{{change|0x17|0x18}}|Chat Suggestions|pre=unchanged}}
  {{PacketList|{{Change|0x0A|0x0B}}|Block Action|pre=unchanged}}
+
  {{PacketList|{{change|0x18|0x19}}|Clientbound Plugin Message (play)|pre=unchanged}}
  {{PacketList|{{Change|0x0B|0x0C}}|Block Change|pre=unchanged}}
+
  {{PacketList|{{change|0x19|0x1A}}|Damage Event|pre=unchanged}}
  {{PacketList|{{Change|0x0C|0x0D}}|Boss Bar|pre=unchanged}}
+
  {{PacketList|{{change|0x1A|0x1B}}|Delete Message|pre=unchanged}}
  {{PacketList|{{Change|0x0D|0x0E}}|Server Difficulty|pre=unchanged}}
+
  {{PacketList|{{change|0x1B|0x1C}}|Disconnect (play)|pre=unchanged}}
  {{PacketList|{{Change|0x0E|0x0F}}|Tab-Complete (clientbound)|pre=unchanged}}
+
  {{PacketList|{{change|0x1C|0x1D}}|Disguised Chat Message|pre=unchanged}}
  {{PacketList|{{Change|0x0F|0x10}}|Chat Message (clientbound)|pre=unchanged}}
+
  {{PacketList|{{change|0x1D|0x1E}}|Entity Event|pre=unchanged}}
  {{PacketList|{{Change|0x10|0x11}}|Multi Block Change|pre=unchanged}}
+
  {{PacketList|{{change|0x1E|0x1F}}|Explosion|pre=unchanged}}
  {{PacketList|{{Change|0x11|0x12}}|Confirm Transation (clientbound)|pre=unchanged}}
+
  {{PacketList|{{change|0x1F|0x20}}|Unload Chunk|pre=unchanged}}
  {{PacketList|{{Change|0x12|0x13}}|Close Window (clientbound)|pre=unchanged}}
+
  {{PacketList|{{change|0x20|0x21}}|Game Event|pre=unchanged}}
  {{PacketList|{{Change|0x13|0x14}}|Open Window|pre=unchanged}}
+
  {{PacketList|{{change|0x21|0x22}}|Open Horse Screen|pre=unchanged}}
  {{PacketList|{{Change|0x14|0x15}}|Window Items|pre=unchanged}}
+
  {{PacketList|{{change|0x22|0x23}}|Hurt Animation|pre=unchanged}}
  {{PacketList|{{Change|0x15|0x16}}|Window Property|pre=unchanged}}
+
  {{PacketList|{{change|0x23|0x24}}|Initialize World Border|pre=unchanged}}
  {{PacketList|{{Change|0x16|0x17}}|Set Slot|pre=unchanged}}
+
  {{PacketList|{{change|0x24|0x25}}|Clientbound Keep Alive (play)|pre=unchanged}}
  {{PacketList|{{Change|0x17|0x18}}|Set Cooldown|pre=unchanged}}
+
  {{PacketList|{{change|0x25|0x26}}|Chunk Data and Update Light|pre=unchanged}}
  {{PacketList|{{Change|0x18|0x19}}|Plugin Message (clientbound)|pre=unchanged}}
+
  {{PacketList|{{change|0x26|0x27}}|World Event|pre=unchanged}}
  {{PacketList|{{Change|0x19|0x1A}}|Named Sound Effect|pre=unchanged}}
+
  {{PacketList|{{change|0x27|0x28}}|Particle|pre=unchanged}}
  {{PacketList|{{Change|0x1A|0x1B}}|Disconnect (play)|pre=unchanged}}
+
  {{PacketList|{{change|0x28|0x29}}|Update Light|pre=unchanged}}
  {{PacketList|{{Change|0x1B|0x1C}}|Entity Status|pre=unchanged}}
+
  {{PacketList|{{change|0x29|0x2A}}|Login (play)|pre=unchanged}}
  {{PacketList|{{Change|0x1C|0x1D}}|Explosion|pre=unchanged}}
+
  {{PacketList|{{change|0x2A|0x2B}}|Map Data|pre=unchanged}}
  {{PacketList|{{Change|0x1D|0x1E}}|Unload Chunk|pre=unchanged}}
+
  {{PacketList|{{change|0x2B|0x2C}}|Merchant Offers|pre=unchanged}}
  {{PacketList|{{Change|0x1E|0x1F}}|Change Game State|pre=unchanged}}
+
  {{PacketList|{{change|0x2C|0x2D}}|Update Entity Position|pre=unchanged}}
  {{PacketList|{{Change|0x1F|0x20}}|Keep Alive (clientbound)|pre=unchanged}}
+
  {{PacketList|{{change|0x2D|0x2E}}|Update Entity Position and Rotation|pre=unchanged}}
  {{PacketList|{{Change|0x20|0x21}}|Chunk Data|pre=unchanged}}
+
  {{PacketList|{{change|0x2E|0x2F}}|Update Entity Rotation|pre=unchanged}}
  {{PacketList|{{Change|0x21|0x22}}|Effect|pre=unchanged}}
+
  {{PacketList|{{change|0x2F|0x30}}|Move Vehicle|pre=unchanged}}
  {{PacketList|{{Change|0x22|0x23}}|Particle|pre=unchanged}}
+
  {{PacketList|{{change|0x30|0x31}}|Open Book|pre=unchanged}}
  {{PacketList|{{Change|0x23|0x24}}|Join Game|pre=unchanged}}
+
  {{PacketList|{{change|0x31|0x32}}|Open Screen|pre=unchanged}}
  {{PacketList|{{Change|0x24|0x25}}|Particle|pre=unchanged}}
+
  {{PacketList|{{change|0x32|0x33}}|Open Sign Editor|pre=unchanged}}
  {{PacketList|{{Change|0x25|0x26}}|Entity Relative Move|pre=unchanged}}
+
  {{PacketList|{{change|0x33|0x34}}|Ping (play)|pre=unchanged}}
  {{PacketList|{{Change|0x26|0x27}}|Entity Look And Relative Move|pre=unchanged}}
+
  {{PacketList|{{change|0x34|0x35}}|Ping Response (play)|pre=unchanged}}
  {{PacketList|{{Change|0x27|0x28}}|Entity Look|pre=unchanged}}
+
  {{PacketList|{{change|0x35|0x36}}|Place Ghost Recipe|pre=unchanged}}
  {{PacketList|{{Change|0x28|0x29}}|Entity|pre=unchanged}}
+
  {{PacketList|{{change|0x36|0x37}}|Player Abilities|pre=unchanged}}
  {{PacketList|{{Change|0x29|0x2A}}|Vehicle Move (clientbound)|pre=unchanged}}
+
  {{PacketList|{{change|0x37|0x38}}|Player Chat Message|pre=unchanged}}
  {{PacketList|{{Change|0x2A|0x2B}}|Open Sign Editor|pre=unchanged}}
+
  {{PacketList|{{change|0x38|0x39}}|End Combat|pre=unchanged}}
  {{PacketList|{{Change|0x2B|0x2C}}|Player Abilities (clientbound)|pre=unchanged}}
+
  {{PacketList|{{change|0x39|0x3A}}|Enter Combat|pre=unchanged}}
  {{PacketList|{{Change|0x2C|0x2D}}|Combat Event|pre=unchanged}}
+
  {{PacketList|{{change|0x3A|0x3B}}|Combat Death|pre=unchanged}}
  {{PacketList|{{Change|0x2D|0x2E}}|Player List Item|pre=unchanged}}
+
  {{PacketList|{{change|0x3B|0x3C}}|Player Info Remove|pre=unchanged}}
  {{PacketList|{{Change|0x2E|0x2F}}|Player Position And Look (clientbound)|pre=unchanged}}
+
  {{PacketList|{{change|0x3C|0x3D}}|Player Info Update|pre=unchanged}}
  {{PacketList|{{Change|0x2F|0x30}}|Use Bed|pre=unchanged}}
+
  {{PacketList|{{change|0x3D|0x3E}}|Look At|pre=unchanged}}
  {{PacketList|0x31|Unlock Recipes|rel=added}}
+
  {{PacketList|{{change|0x3E|0x3F}}|Synchronize Player Position|pre=unchanged}}
  {{PacketList|{{Change|0x30|0x32}}|Destroy Entities|pre=unchanged}}
+
  {{PacketList|{{change|0x3F|0x40}}|Update Recipe Book|pre=unchanged}}
  {{PacketList|{{Change|0x31|0x33}}|Remove Entity Effect|pre=unchanged}}
+
  {{PacketList|{{change|0x40|0x41}}|Remove Entities|pre=unchanged}}
  {{PacketList|{{Change|0x32|0x34}}|Resource Pack Send|pre=unchanged}}
+
  {{PacketList|{{change|0x41|0x42}}|Remove Entity Effect|pre=unchanged}}
  {{PacketList|{{Change|0x33|0x35}}|Respawn|pre=unchanged}}
+
  {{PacketList|{{change|0x42|0x43}}|Reset Score|pre=unchanged}}
  {{PacketList|{{Change|0x34|0x36}}|Entity Head Look|pre=unchanged}}
+
  {{PacketList|{{change|0x43|0x44}}|Remove Resource Pack (play)|pre=unchanged}}
  {{PacketList|{{Change|0x35|0x37}}|World Border|pre=unchanged}}
+
  {{PacketList|{{change|0x44|0x45}}|Add Resource Pack (play)|pre=unchanged}}
  {{PacketList|{{Change|0x36|0x38}}|Camera|pre=unchanged}}
+
  {{PacketList|{{change|0x45|0x46}}|Respawn|pre=unchanged}}
  {{PacketList|{{Change|0x37|0x39}}|Held Item Change (clientbound)|pre=unchanged}}
+
  {{PacketList|{{change|0x46|0x47}}|Set Head Rotation|pre=unchanged}}
  {{PacketList|{{Change|0x38|0x3A}}|Display Scoreboard|pre=unchanged}}
+
  {{PacketList|{{change|0x47|0x48}}|Update Section Blocks|pre=unchanged}}
  {{PacketList|{{Change|0x39|0x3B}}|Entity Metadata|pre=unchanged}}
+
  {{PacketList|{{change|0x48|0x49}}|Select Advancements Tab|pre=unchanged}}
  {{PacketList|{{Change|0x3A|0x3C}}|Attach Entity|pre=unchanged}}
+
  {{PacketList|{{change|0x49|0x4A}}|Server Data|pre=unchanged}}
  {{PacketList|{{Change|0x3B|0x3D}}|Entity Velocity|pre=unchanged}}
+
  {{PacketList|{{change|0x4A|0x4B}}|Set Action Bar Text|pre=unchanged}}
  {{PacketList|{{Change|0x3C|0x3E}}|Entity Equipment|pre=unchanged}}
+
  {{PacketList|{{change|0x4B|0x4C}}|Set Border Center|pre=unchanged}}
  {{PacketList|{{Change|0x3D|0x3F}}|Set Experience|pre=unchanged}}
+
  {{PacketList|{{change|0x4C|0x4D}}|Set Border Lerp Size|pre=unchanged}}
  {{PacketList|{{Change|0x3E|0x40}}|Update Health|pre=unchanged}}
+
  {{PacketList|{{change|0x4D|0x4E}}|Set Border Size|pre=unchanged}}
  {{PacketList|{{Change|0x3F|0x41}}|Scoreboard Objective|pre=unchanged}}
+
  {{PacketList|{{change|0x4E|0x4F}}|Set Border Warning Delay|pre=unchanged}}
  {{PacketList|{{Change|0x40|0x42}}|Set Passengers|pre=unchanged}}
+
  {{PacketList|{{change|0x4F|0x50}}|Set Border Warning Distance|pre=unchanged}}
  {{PacketList|{{Change|0x41|0x43}}|Teams|pre=unchanged}}
+
  {{PacketList|{{change|0x50|0x51}}|Set Camera|pre=unchanged}}
  {{PacketList|{{Change|0x42|0x44}}|Update Score|pre=unchanged}}
+
  {{PacketList|{{change|0x51|0x52}}|Set Held Item|pre=unchanged}}
  {{PacketList|{{Change|0x43|0x45}}|Spawn Position|pre=unchanged}}
+
  {{PacketList|{{change|0x52|0x53}}|Set Center Chunk|pre=unchanged}}
  {{PacketList|{{Change|0x44|0x46}}|Time Update|pre=unchanged}}
+
  {{PacketList|{{change|0x53|0x54}}|Set Render Distance|pre=unchanged}}
  {{PacketList|{{Change|0x45|0x47}}|Title|pre=unchanged}}
+
  {{PacketList|{{change|0x54|0x55}}|Set Default Spawn Position|pre=unchanged}}
  {{PacketList|{{Change|0x46|0x48}}|Sound Effect|pre=unchanged}}
+
  {{PacketList|{{change|0x55|0x56}}|Display Objective|pre=unchanged}}
  {{PacketList|{{Change|0x47|0x49}}|Player List Header And Footer|pre=unchanged}}
+
  {{PacketList|{{change|0x56|0x57}}|Set Entity Metadata|pre=unchanged}}
  {{PacketList|{{Change|0x48|0x4A}}|Collect Item|pre=unchanged}}
+
  {{PacketList|{{change|0x57|0x58}}|Link Entities|pre=unchanged}}
  {{PacketList|{{Change|0x49|0x4B}}|Entity Teleport|pre=unchanged}}
+
  {{PacketList|{{change|0x58|0x59}}|Set Entity Velocity|pre=unchanged}}
  {{PacketList|{{Change|0x4A|0x4C}}|Entity Properties|pre=unchanged}}
+
  {{PacketList|{{change|0x59|0x5A}}|Set Equipment|pre=unchanged}}
  {{PacketList|{{Change|0x4B|0x4D}}|Entity Effect|pre=unchanged}}
+
  {{PacketList|{{change|0x5A|0x5B}}|Set Experience|pre=unchanged}}
  {{PacketList|0x4E|Advancement Progress|rel=added}}
+
  {{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"| Play serverbound
 
  !colspan="4"| Play serverbound
  {{PacketList|0x01|Prepare Crafting Grid|rel=added}}
+
  {{PacketList|0x10|Cookie Response (play)|rel=added}}
  {{PacketList|{{Change|0x01|0x02}}|Tab-Complete (serverbound)|pre=unchanged}}
+
  {{PacketList|{{change|0x10|0x11}}|Serverbound Plugin Message (play)|pre=unchanged}}
  {{PacketList|{{Change|0x02|0x03}}|Chat Message (serverbound)|pre=unchanged}}
+
  {{PacketList|{{change|0x11|0x12}}|Edit Book|pre=unchanged}}
  {{PacketList|{{Change|0x03|0x04}}|Client Status|pre=unchanged}}
+
{{PacketList|{{change|0x12|0x13}}|Query Entity Tag|pre=unchanged}}
  {{PacketList|{{Change|0x04|0x05}}|Client Settings|pre=unchanged}}
+
{{PacketList|{{change|0x13|0x14}}|Interact|pre=unchanged}}
  {{PacketList|{{Change|0x05|0x06}}|Confirm Transaction (serverbound)|pre=unchanged}}
+
{{PacketList|{{change|0x14|0x15}}|Jigsaw Generate|pre=unchanged}}
  {{PacketList|{{Change|0x06|0x07}}|Enchant Item|pre=unchanged}}
+
{{PacketList|{{change|0x15|0x16}}|Serverbound Keep Alive (play)|pre=unchanged}}
  {{PacketList|{{Change|0x07|0x08}}|Click Window|pre=unchanged}}
+
  {{PacketList|{{change|0x16|0x17}}|Lock Difficulty|pre=unchanged}}
  {{PacketList|{{Change|0x08|0x09}}|Close Window (serverbound)|pre=unchanged}}
+
  {{PacketList|{{change|0x17|0x18}}|Set Player Position|pre=unchanged}}
  {{PacketList|{{Change|0x09|0x0A}}|Plugin Message (serverbound)|pre=unchanged}}
+
  {{PacketList|{{change|0x18|0x19}}|Set Player Position and Rotation|pre=unchanged}}
  {{PacketList|{{Change|0x0A|0x0B}}|Use Entity|pre=unchanged}}
+
  {{PacketList|{{change|0x19|0x1A}}|Set Player Rotation|pre=unchanged}}
  {{PacketList|{{Change|0x0B|0x0C}}|Keep Alive (serverbound)|pre=unchanged}}
+
  {{PacketList|{{change|0x1A|0x1B}}|Set Player On Ground|pre=unchanged}}
  {{PacketList|{{Change|0x0C|0x0D}}|Player Position|pre=unchanged}}
+
  {{PacketList|{{change|0x1B|0x1C}}|Move Vehicle|pre=unchanged}}
  {{PacketList|{{Change|0x0D|0x0E}}|Player Position And Look (serverbound)|pre=unchanged}}
+
  {{PacketList|{{change|0x1C|0x1D}}|Paddle Boat|pre=unchanged}}
  {{PacketList|{{Change|0x0E|0x0F}}|Player Look|pre=unchanged}}
+
  {{PacketList|{{change|0x1D|0x1E}}|Pick Item|pre=unchanged}}
  {{PacketList|{{Change|0x0F|0x10}}|Player|pre=unchanged}}
+
  {{PacketList|{{change|0x1E|0x1F}}|Ping Request (play)|pre=unchanged}}
  {{PacketList|{{Change|0x10|0x11}}|Vehicle Move (serverbound)|pre=unchanged}}
+
  {{PacketList|{{change|0x1F|0x20}}|Place Recipe|pre=unchanged}}
  {{PacketList|{{Change|0x11|0x12}}|Steer Boat|pre=unchanged}}
+
{{PacketList|{{change|0x20|0x21}}|Player Abilities|pre=unchanged}}
  {{PacketList|{{Change|0x12|0x13}}|Player Abilities (serverbound)|pre=unchanged}}
+
  {{PacketList|{{change|0x21|0x22}}|Player Action|pre=unchanged}}
  {{PacketList|{{Change|0x13|0x14}}|Player Digging|pre=unchanged}}
+
  {{PacketList|{{change|0x22|0x23}}|Player Command|pre=unchanged}}
  {{PacketList|{{Change|0x14|0x15}}|Entity Action|pre=unchanged}}
+
  {{PacketList|{{change|0x23|0x24}}|Player Input|pre=unchanged}}
  {{PacketList|{{Change|0x15|0x16}}|Steer Vehicle|pre=unchanged}}
+
  {{PacketList|{{change|0x24|0x25}}|Pong (play)|pre=unchanged}}
  {{PacketList|0x17|Crafting Book Data|rel=added}}
+
  {{PacketList|{{change|0x25|0x26}}|Change Recipe Book Settings|pre=unchanged}}
  {{PacketList|{{Change|0x16|0x18}}|Resource Pack Status|pre=unchanged}}
+
{{PacketList|{{change|0x26|0x27}}|Set Seen Recipe|pre=unchanged}}
  {{PacketList|{{Change|0x17|0x19}}|Held Item Change (serverbound)|pre=unchanged}}
+
{{PacketList|{{change|0x27|0x28}}|Rename Item|pre=unchanged}}
  {{PacketList|{{Change|0x18|0x1A}}|Creative Inventory Action|pre=unchanged}}
+
  {{PacketList|{{change|0x28|0x29}}|Resource Pack Response (play)|pre=unchanged}}
  {{PacketList|{{Change|0x19|0x1B}}|Update Sign|pre=unchanged}}
+
  {{PacketList|{{change|0x29|0x2A}}|Seen Advancements|pre=unchanged}}
  {{PacketList|{{Change|0x1A|0x1C}}|Animation (serverbound)|pre=unchanged}}
+
  {{PacketList|{{change|0x2A|0x2B}}|Select Trade|pre=unchanged}}
  {{PacketList|{{Change|0x1B|0x1D}}|Spectate|pre=unchanged}}
+
  {{PacketList|{{change|0x2B|0x2C}}|Set Beacon Effect|pre=unchanged}}
  {{PacketList|{{Change|0x1C|0x1E}}|Player Block Placement|pre=unchanged}}
+
  {{PacketList|{{change|0x2C|0x2D}}|Set Held Item|pre=unchanged}}
  {{PacketList|{{Change|0x1D|0x1F}}|Use Item|pre=unchanged}}
+
  {{PacketList|{{change|0x2D|0x2E}}|Program Command Block|pre=unchanged}}
  {{PacketList|0x20|Advancement Tab|rel=added}}
+
  {{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 ==
  
=== Entity Metadata ===
+
No changes so far.
  
Note that entity metadata is a totally distinct concept from block metadata.  It is not required to send all metadata fields, or even any metadata fields, so long as the terminating entry is correctly sent.
+
== Entity Metadata ==
  
Entity Metadata is an array of entries, each of which looks like the following:
+
{{#vardefine: meta_prerelease | 1}}
  
{| class="wikitable"
+
{{Metadata type definition/begin}}
! Name
+
  ! Value
! Type
 
! Meaning
 
|-
 
| Index
 
| Unsigned Byte
 
| Unique index key determining the meaning of the following value, see the table below. If this is <code>0xff</code> then the it is the end of the Entity Metadata array and no more is read.
 
|-
 
| Type
 
| Optional Byte Enum
 
| Only if Index is not <code>0xff</code>; the type of the index, see the table below
 
|-
 
| Value
 
| Optional ''value of Type''
 
| Only if Index is not <code>0xff</code>: the value of the metadata field
 
|}
 
 
 
{| class="wikitable"
 
! Value of Type field
 
  ! [[Data types|Type]] of Value field
 
 
  ! Notes
 
  ! Notes
|-
+
{{Metadata type definition|Byte}}
  | 0
+
  | {{Type|Byte}}
| Byte
+
  |
  |  
+
{{Metadata type definition|VarInt}}
|-
+
  | {{Type|VarInt}}
  | 1
+
  |
  | VarInt
+
{{Metadata type definition|VarLong}}
|  
+
  | {{Type|VarLong}}
  |-
+
  |
  | 2
+
{{Metadata type definition|Float}}
| Float
+
  | {{Type|Float}}
  |  
+
  |
  |-
+
{{Metadata type definition|String}}
| 3
+
  | {{Type|String}}
  | String
+
  |
  |  
+
{{Metadata type definition|Text Component}}
|-
+
  | {{Type|Text Component}}
  | 4
+
  |
  | [[Chat]]
+
{{Metadata type definition|Optional Text Component}}
|  
+
  | ({{Type|Boolean}}, {{Type|Optional}} {{Type|Text Component}})
  |-
+
  | Text Component is present if the Boolean is set to true.
  | 5
+
{{Metadata type definition|Slot}}
| [[Slot]]
+
  | {{Type|Slot}}
  |  
+
  |
  |-
+
{{Metadata type definition|Boolean}}
| 6
+
  | {{Type|Boolean}}
  | Boolean
+
  |
  |  
+
{{Metadata type definition|Rotations}}
|-
+
  | ({{Type|Float}}, {{Type|Float}}, {{Type|Float}})
  | 7
+
  | rotation on x, rotation on y, rotation on z
| Rotation
+
{{Metadata type definition|Position}}
  | 3 floats: rotation on x, rotation on y, rotation on z
+
  | {{Type|Position}}
|-
+
  |
| 8
+
{{Metadata type definition|Optional Position}}
  | [[Data Types#Position|Position]]
+
  | ({{Type|Boolean}}, {{Type|Optional}} {{Type|Position}})
  |  
+
  | Position is present if the Boolean is set to true.
|-
+
{{Metadata type definition|Direction}}
  | 9
+
  | {{Type|VarInt}} {{Type|Enum}}
| OptPosition (Boolean + Optional Position)
+
  | Down = 0, Up = 1, North = 2, South = 3, West = 4, East = 5
  | Position is present if the Boolean is set to true
+
{{Metadata type definition|Optional UUID}}
|-
+
  | ({{Type|Boolean}}, {{Type|Optional}} {{Type|UUID}})
  | 10
+
  | UUID is present if the Boolean is set to true.
| Direction (VarInt)
+
{{Metadata type definition|Block State}}
  | (Down = 0, Up = 1, North = 2, South = 3, West = 4, East = 5)
+
  | {{Type|VarInt}}
|-
+
  | An ID in the block state registry.
  | 11
+
{{Metadata type definition|Optional Block State}}
| OptUUID (Boolean + Optional UUID)
+
  | {{Type|VarInt}}
  | UUID is present if the Boolean is set to true
+
  | 0 for absent (air is unrepresentable); otherwise, an ID in the block state registry.
  |-
+
{{Metadata type definition|NBT}}
  | 12
+
  | {{Type|NBT}}
  | OptBlockID (VarInt)
 
  | 0 for absent otherwise, <code><nowiki>id &lt;&lt; 4 | data</nowiki></code>
 
|-style="background-color: #d9ead3;"
 
  | 13
 
| [[NBT|NBT Tag]]
 
 
  |
 
  |
 +
{{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
 
  |}
 
  |}
  
Entity classes also recursively inherit fields from classes they extend.
+
=== Armadillo ===
  
=== IllusionIllager ===
+
{{Metadata inherit|Armadillo|inherits=Animal|start_at=17}}
 
+
{| class="wikitable" {{added}}
Extends [[#EvocationIllager|EvocationIllager]].
 
 
 
* ''Entity ID: '''37'''.''
 
 
 
=== Parrot ===
 
 
 
Extends [[#TameableAnimal|TameableAnimal]].
 
 
 
{| class="wikitable" style="background-color: #d9ead3;"
 
 
  ! Index
 
  ! Index
 
  ! Type
 
  ! Type
Line 236: Line 303:
 
  ! Default
 
  ! Default
 
  |-
 
  |-
  | 15
+
  | {{Metadata id|added}}
  | VarInt
+
  | {{Metadata type|Armadillo State}}
  |colspan="2"| Variant (0: red/blue, 1: blue, 2: green, 3: yellow/blue, 4: silver)
+
  |colspan="2"| Armadillo State
  | 0
+
  | IDLE
 
  |}
 
  |}
  
* ''Entity ID: '''105'''.''
+
== Block Actions ==
 +
 
 +
No changes so far.
  
=== Player ===
+
== Inventories ==
  
Extends [[#Living|Living]].
+
No changes so far.
  
{| class="wikitable"
+
== Plugin Channels ==
! Index
 
! Type
 
!style="width: 250px;" colspan="2"| Meaning
 
! Default
 
|-
 
| 11
 
| Float
 
|colspan="2"| Additional Hearts
 
| 0.0
 
|-
 
| 12
 
| VarInt
 
|colspan="2"| Score
 
| 0
 
|-
 
|rowspan="10"| 13
 
|rowspan="10"| Byte
 
|colspan="2"| The Displayed Skin Parts bit mask that is sent in [[Protocol#Client Settings|Client Settings]]
 
|rowspan="10"| 0
 
|-
 
! Bit mask !! Meaning
 
|-
 
| 0x01 || Cape enabled
 
|-
 
| 0x02 || Jacket enabled
 
|-
 
| 0x04 || Left sleeve enabled
 
|-
 
| 0x08 || Right sleeve enabled
 
|-
 
| 0x10 || Left pants leg enabled
 
|-
 
| 0x20 || Right pants leg enabled
 
|-
 
| 0x40 || Hat enabled
 
|-
 
| 0x80 || ''Unused''
 
|-
 
| 14
 
| Byte
 
|colspan="2"| Main hand (0 : Left, 1 : Right)
 
| 1
 
|- style="background-color: #d9ead3;"
 
| 15
 
| NBT Tag
 
|colspan="2"|Left shoulder entity data
 
|
 
|- style="background-color: #d9ead3;"
 
| 16
 
| NBT Tag
 
|colspan="2"|Right shoulder entity data
 
|
 
|}
 
  
== Block Actions ==
+
No changes so far.
  
== Note Block ==
+
== Handshake ==
  
Displays a colored note particle and plays the appropriate note sound effect.
+
=== Serverbound ===
  
=== Action IDs ===
+
==== Handshake ====
  
The action ID is used to determine the instrument to play.
+
This causes the server to switch into the target state.
  
 
{| class="wikitable"
 
{| class="wikitable"
 +
! Packet ID
 +
! State
 +
! Bound To
 +
! Field Name
 +
! Field Type
 +
! Notes
 
  |-
 
  |-
  ! Type ID
+
  | rowspan="4"| 0x00
  ! Instrument
+
  | rowspan="4"| Handshaking
  ! Material/block
+
  | rowspan="4"| Server
  ! Sound
+
  | Protocol Version
 +
| [[#Definitions:varint|VarInt]]
 +
| See [[protocol version numbers]] (currently 765 in Minecraft 1.20.4).
 
  |-
 
  |-
  | 0
+
  | Server Address
  | Harp
+
  | [[#Definitions:string|String]] (255)
| Any other material
+
  | 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.
  | <code>block.note.harp</code>
 
 
  |-
 
  |-
  | 1
+
  | Server Port
  | Bass Drum
+
  | [[#Definitions:unsigned-short|Unsigned Short]]
| Stone
+
  | Default is 25565. The Notchian server does not use this information.
  | <code>block.note.harp</code>
 
 
  |-
 
  |-
  | 2
+
  | Next State
  | Snare Drum
+
  | [[#Definitions:varint|VarInt]] [[#Definitions:enum|Enum]]
| Sand
+
  | 1 for [[#Status|Status]], 2 for [[#Login|Login]]{{change||, 3 for [[#Login|Transfer]]}}.
| <code>block.note.snare</code>
 
|-
 
| 3
 
| Clicks/Sticks
 
| Glass
 
| <code>block.note.hat</code>
 
|-
 
| 4
 
| Bass guitar
 
| Wood
 
| <code>block.note.bass</code>
 
|- style="background-color: #d9ead3;"
 
| 5
 
| Flute
 
| Clay
 
| <code>block.note.flute</code>
 
|- style="background-color: #d9ead3;"
 
| 6
 
| Bell
 
| Gold block
 
| <code>block.note.bell</code>
 
  |- style="background-color: #d9ead3;"
 
| 7
 
| Guitar
 
| Wool
 
| <code>block.note.guitar</code>
 
|- style="background-color: #d9ead3;"
 
| 8
 
| Chime
 
| Packed ice
 
| <code>block.note.chime</code>
 
|- style="background-color: #d9ead3;"
 
| 9
 
| Xylophone
 
| Bone block
 
| <code>block.note.xylophone</code>
 
 
  |}
 
  |}
  
Any unknown ID is treated as if it were <code>0</code>.
+
== Status ==
  
The sound event <code>block.note.pling</code> is unassigned and unused.
+
=== Clientbound ===
  
=== Action param ===
+
No changes so far.
  
The pitch of the note (between 0–24 inclusive where 0 is the lowest and 24 is the highest). More information about how the pitch values correspond to notes in real life and how they correspond to pitch scaling on the sound effects can be found in the {{Minecraft Wiki|Note Block}} article on the Minecraft wiki.
+
=== Serverbound ===
  
== Chat components ==
+
No changes so far.
  
==== Translation component ====
+
== Login ==
  
{{Need Info|Is using this with an invalid key intended or deprecated?  Also, what exactly happens on invalid formats?}}
+
=== Clientbound ===
  
Translates text into the current language.  If the JSON contains a <code>translate</code> key, then the component is a translation component.
+
==== Cookie Request (login) ====
  
Translation supports <code>%s</code> and <code>%%</code> format tokens.  <code>%%</code> is just an escaped percent symbol.  <code>%s</code> marks text to replace using content from the optional <code>with</code> tag.  <code>with</code> is an array of components.
+
Requests a cookie that was previously stored.
  
{{Change||As a special case, if the translation key is <code>chat.type.text</code>, it will be changed to <code>chat.type.text.narrate</code> when passed to narrator (although it will remain as <code>chat.type.text</code> in chat).}}
+
{| class="wikitable" {{added}}
 +
! Packet ID
 +
! State
 +
! Bound To
 +
! colspan="2"| Field Name
 +
! colspan="2"| Field Type
 +
! Notes
 +
|-
 +
| rowspan="1"| 0x05
 +
| rowspan="1"| Login
 +
| rowspan="1"| Client
 +
| colspan="2"| Key
 +
| colspan="2"| Identifier
 +
| The identifier of the cookie.
 +
|}
  
==== Keybind component ====
+
=== Serverbound ===
 
 
{{change||Displays the client's current keybind for the specified key.  If the component contains a <code>keybind</code> key, then it is a keybind component.  The value is named after the keys in {{Minecraft Wiki|options.txt}} (for instance, for <code>key_key.forward</code> in options.txt, <code>key.forward</code> would be used in the component and <kbd>W</kbd> would be displayed).  For keys that are not known, the value provided should be displayed instead (for instance <code>key.invalid</code> would remain as <code>key.invalid</code>).}}
 
 
 
== Plugin Channels ==
 
  
No changes so far.
+
==== Cookie Response (login) ====
  
== Play ==
+
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.
  
=== Clientbound ===
+
{| class="wikitable" {{added}}
 
 
==== Advancements ====
 
 
 
{| class="wikitable"
 
 
  ! Packet ID
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  !colspan="2"| Field Name
+
  ! colspan="2"| Field Name
  !colspan="2"| Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="9"| 0x08
+
  | rowspan="3"| 0x04
  |rowspan="9"| Play
+
  | rowspan="3"| Login
  |rowspan="9"| Client
+
  | rowspan="3"| Server
  |colspan="2"| Reset/Clear
+
  | colspan="2"| Key
|colspan="2"| Boolean
+
  | colspan="2"| Identifier
| Whether to reset/clear the current advancements
+
  | The identifier of the cookie.
|-
 
|colspan="2"| Mapping size
 
  |colspan="2"| VarInt
 
| Size of the following array
 
|-
 
|rowspan="2"| Advancement mapping
 
| Key
 
|rowspan="2"| Array
 
| Identifier
 
  | The identifier of the advancement
 
|-
 
| Value
 
| Advancement
 
| See below
 
|-
 
|colspan="2"| List size
 
|colspan="2"| VarInt
 
| Size of the following array
 
|-
 
|colspan="2"| Identifiers
 
|colspan="2"| Array of Identifier
 
| The identifiers of the advancements that should be removed
 
 
  |-
 
  |-
  |colspan="2"| Progress size
+
  | colspan="2"| Has Payload
  |colspan="2"| VarInt
+
  | colspan="2"| Boolean
  | Size of the following array
+
  | The payload is only present if the cookie exists on the client.
 
  |-
 
  |-
  |rowspan="2"| Progress mapping
+
  | colspan="2"| Payload
  | Key
+
  | colspan="2"| Optional ByteArray(5120)
|rowspan="2"| Array
+
  | The data of the cookie, if any.
| Identifier
 
  | The identifier of the advancement
 
|-
 
| Value
 
| Advancement progress
 
| See below
 
 
  |}
 
  |}
  
Advancement structure:
+
== Configuration ==
 +
 
 +
=== Clientbound ===
  
{| class="wikitable"
+
==== Cookie Request (configuration) ====
!colspan="2"| Field Name
 
!colspan="2"| Field Type
 
! Notes
 
|-
 
|colspan="2"| Has parent
 
|colspan="2"| Boolean
 
| Indicates whether the next field exists.
 
|-
 
|colspan="2"| Parent id
 
|colspan="2"| Optional Identifier
 
| The identifier of the parent advancement.
 
|-
 
|colspan="2"| Has display
 
|colspan="2"| Boolean
 
| Indicates whether the next field exists
 
|-
 
|colspan="2"| Display data
 
|colspan="2"| Optional advancement display
 
| See below.
 
|-
 
|colspan="2"| Number of criteria
 
|colspan="2"| VarInt
 
| Size of the following array
 
|-
 
|rowspan="2"| Criteria
 
| Key
 
|rowspan="2"| Array
 
| Identifier
 
| The identifier of the criterion
 
|-
 
| Value
 
| '''Void'''
 
| There is ''no'' content written here.  Perhaps this will be expanded in the future?
 
|-
 
|colspan="2"| Array length
 
|colspan="2"| VarInt
 
| Number of arrays in the following array
 
|-
 
|rowspan="2"| Requirements
 
| Array length 2
 
|rowspan="2"| Array
 
| VarInt
 
| Number of elements in the following array
 
|-
 
| Requirement
 
| Array of String
 
| Array of required criteria
 
|}
 
  
Advancement display:
+
Requests a cookie that was previously stored.
  
{| class="wikitable"
+
{| class="wikitable" {{added}}
  ! Field Name
+
  ! Packet ID
  ! Field Type
+
! State
 +
! Bound To
 +
! colspan="2"| Field Name
 +
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  | Title
+
  | rowspan="1"| 0x00
| Chat
+
  | rowspan="1"| Configuration
  |
+
  | rowspan="1"| Client
|-
+
  | colspan="2"| Key
  | Description
+
  | colspan="2"| Identifier
| Chat
+
  | The identifier of the cookie.
  |
 
|-
 
| Icon
 
| [[Slot]]
 
|
 
  |-
 
| Frame type
 
| VarInt enum
 
| 0 = <code>task</code>, 1 = <code>challenge</code>, 2 = <code>goal</code>
 
|-
 
| Flags
 
| Integer
 
| 0x1: has background texture; 0x2: <code>show_toast</code>; 0x4: <code>hidden</code>
 
|-
 
| Background texture
 
| Optional Identifier
 
  | Background texture location.  Only if flags indicates it.
 
|-
 
| X coord
 
| Float
 
|
 
|-
 
| Y coord
 
| Float
 
|
 
 
  |}
 
  |}
  
Advancement progress:
+
==== Store Cookie (configuration) ====
 +
 
 +
Stores some arbitrary data on the client, which persists between server transfers. The Notchian client only accepts cookies of up to 5 kiB in size.
  
{| class="wikitable"
+
{| class="wikitable" {{added}}
  !colspan="2"| Field Name
+
! Packet ID
  !colspan="2"| Field Type
+
! State
 +
! Bound To
 +
  ! colspan="2"| Field Name
 +
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |colspan="2"| Size
+
| rowspan="2"| 0x09
  |colspan="2"| VarInt
+
| rowspan="2"| Configuration
  | Size of the following array
+
| rowspan="2"| Client
 +
  | colspan="2"| Key
 +
  | colspan="2"| Identifier
 +
  | The identifier of the cookie.
 
  |-
 
  |-
  |rowspan="2"| Criteria
+
  | colspan="2"| Payload
  | Criterion identifier
+
  | colspan="2"| ByteArray(5120)
|rowspan="2"| Array
+
  | The data of the cookie.
| Identifier
 
  | The identifier of the criterion.
 
|-
 
| Criterion progress
 
| Criterion progress
 
|
 
 
  |}
 
  |}
  
Criterion progress:
+
==== Transfer (configuration) ====
  
{| class="wikitable"
+
Notifies the client that it should transfer to the given server. Cookies previously stored are preserved between server transfers.
  ! Field Name
+
 
  ! Field Type
+
{| class="wikitable" {{added}}
 +
  ! Packet ID
 +
! State
 +
! Bound To
 +
! colspan="2"| Field Name
 +
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  | Achieved
+
  | rowspan="2"| 0x0A
  | Boolean
+
| rowspan="2"| Configuration
  | If true, next field is present
+
| rowspan="2"| Client
 +
  | colspan="2"| Host
 +
| colspan="2"| String
 +
  | The hostname of IP of the server.
 
  |-
 
  |-
  | Date of achieving
+
  | colspan="2"| Port
  | Optional Long
+
  | colspan="2"| VarInt
  | As returned by [https://docs.oracle.com/javase/6/docs/api/java/util/Date.html#getTime() <code>Date.getTime</code>]
+
  | The port of the server.
 
  |}
 
  |}
  
==== Update Block Entity ====
+
=== Serverbound ===
 +
 
 +
==== Cookie Response (configuration) ====
  
Sets tile entity associated with the block at the given location.
+
Response to a [[#Cookie_Request_(configuration)|Cookie Request (configuration)]] from the server. The Notchian server only accepts responses of up to 5 kiB in size.
  
{| class="wikitable"
+
{| class="wikitable" {{added}}
 
  ! Packet ID
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="3"| {{Change|0x09|0x0A}}
+
  | rowspan="3"| 0x01
  |rowspan="3"| Play
+
  | rowspan="3"| Configuration
  |rowspan="3"| Client
+
  | rowspan="3"| Server
  | Location
+
  | colspan="2"| Key
  | Position
+
  | colspan="2"| Identifier
  |  
+
  | The identifier of the cookie.
 
  |-
 
  |-
  | Action
+
  | colspan="2"| Has Payload
  | Unsigned Byte
+
  | colspan="2"| Boolean
  | The type of update to perform, see below
+
  | The payload is only present if the cookie exists on the client.
 
  |-
 
  |-
  | NBT Data
+
  | colspan="2"| Payload
  | [[NBT|NBT Tag]]
+
  | colspan="2"| Optional ByteArray(5120)
  | Data to set. May be a TAG_END (0), in which case the block entity at the given location is removed (though this is not required since the client will remove the block entity automatically on chunk unload or block removal)
+
  | The data of the cookie, if any.
 
  |}
 
  |}
  
''Action'' field:
+
== Play ==
 +
 
 +
=== Clientbound ===
  
* '''1''': Set data of a mob spawner (everything except for SpawnPotentials: current delay, min/max delay, mob to be spawned, spawn count, spawn range, etc.)
+
==== Cookie Request (play) ====
* '''2''': Set command block text (command and last execution status)
 
* '''3''': Set the level, primary, and secondary powers of a beacon
 
* '''4''': Set rotation and skin of mob head
 
* '''5''': Set type of flower in flower pot
 
* '''6''': Set base color and patterns on a banner
 
* '''7''': Set the data for a Structure tile entity
 
* '''8''': Set the destination for a end gateway
 
* '''9''': Set the text on a sign
 
* '''10''': Declare a shulker box (unclear if there is any actual data)
 
* {{Change||'''11''': Set the color of a bed}}
 
  
==== Unlock Recipes ====
+
Requests a cookie that was previously stored.
  
{| 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="8"| 0x31
+
  | rowspan="1"| 0x16
  |rowspan="8"| Play
+
  | rowspan="1"| Play
  |rowspan="8"| Client
+
  | rowspan="1"| Client
|-
+
  | colspan="2"| Key
  |colspan="2"| Action
+
  | colspan="2"| Identifier
  |colspan="2"| Short
+
  | The identifier of the cookie.
  | The action, see below
 
|-
 
|colspan="2"| Crafting Book Open
 
|colspan="2"| Boolean
 
| If true, then the crafting book will be open when the player opens its inventory.
 
|-
 
|colspan="2"| Filtering Craftable
 
|colspan="2"| Boolean
 
| If true, then the filtering option is active when the players opens its inventory.
 
|-
 
|colspan="2"| Array size 1
 
|colspan="2"| VarInt
 
| Number of elements in the following array
 
|-
 
|rowspan="1"| Recipe ID
 
|
 
|rowspan="1"| Array
 
| Integer
 
|
 
|-
 
|colspan="2"| Array size 2
 
|colspan="2"| VarInt
 
| Number of elements in the following array
 
|-
 
|rowspan="1"| Recipe ID
 
|
 
|rowspan="1"| Array
 
| Integer
 
|
 
 
  |}
 
  |}
Action:
 
* 1 = All the recipes in the list 1 are added and their icon will be shown in the notification. The notification will only show up if all the recipes in this list weren't displayed before (removing the recipe resets this). All the recipes in the list 2 will added to the recipe book.
 
* 2 = Remove all the recipes in the list 1. This allows them to re-displayed when they are readded.
 
* 3 = All the recipes in the list 2 will added to the recipe book. All the recipes in list 1 will be tagged as displayed. No notification will be shown.
 
  
Recipe ID:
+
==== Store Cookie (play) ====
These are hardcoded values in the client and server, all the recipe json files will be loaded in a specific order (alphabetical, like sounds) and internal ids will be assigned in that order. There are also inbuilt recipes like fireworks, banners, etc., these are the first recipes to have their id assigned. Due the fact that the recipes are loaded in a specific order will the ids very likely change when recipes get added. Custom recipes are scheduled for Minecraft 1.13, so most likely will things change a bit in that version.
 
  
==== Advancement Progress ====
+
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="2"| 0x4E
+
  | rowspan="2"| 0x6A
  |rowspan="2"| Play
+
  | rowspan="2"| Play
  |rowspan="2"| Client
+
  | rowspan="2"| Client
  | Has id
+
  | colspan="2"| Key
  | Boolean
+
  | colspan="2"| Identifier
  | Indicates if the next field is present
+
  | The identifier of the cookie.
 
  |-
 
  |-
  | ID
+
  | colspan="2"| Payload
  | Optional Identifier
+
  | colspan="2"| ByteArray(5120)
  |
+
  | The data of the cookie.
 
  |}
 
  |}
 
=== Serverbound ===
 
  
==== Prepare Crafting Grid ====
+
==== Transfer (play) ====
 +
 
 +
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="12"| 0x01
+
  | rowspan="2"| 0x72
  |rowspan="12"| Play
+
  | rowspan="2"| Play
  |rowspan="12"| Server
+
  | rowspan="2"| Client
|colspan="2"| Window ID
+
  | colspan="2"| Host
|colspan="2"| Byte
+
  | colspan="2"| String
| The window id.
+
  | The hostname of IP of the server.
|-
 
  |colspan="2"| Action number
 
  |colspan="2"| Short
 
  | The transaction number. Will be send to the client in a Confirm Transaction packet.
 
|-
 
|colspan="2"| Array size
 
|colspan="2"| Short
 
| Number of elements in the following array
 
|-
 
|rowspan="3"| Return Entry
 
| Item
 
|rowspan="3"| Array
 
| Slot
 
| The item stack that will be put in the inventory slot
 
|-
 
| Crafting Slot
 
| Byte
 
| The crafting slot index in the active container
 
|-
 
| Player Slot
 
| Byte
 
| The player slot index in the player inventory
 
|-
 
|colspan="2"| Array Size
 
|colspan="2"| Short
 
| Number of elements in the following array
 
|-
 
|rowspan="3"| Prepare Entry
 
| Item
 
|rowspan="3"| Array
 
| Slot
 
| The item stack that will be put in the crafting slot
 
 
  |-
 
  |-
  | Crafting Slot
+
  | colspan="2"| Port
| Byte
+
  | colspan="2"| VarInt
| The crafting slot index in the active container
+
  | The port of the server.
|-
 
  | Player Slot
 
| Byte
 
  | The player slot index in the player inventory
 
 
  |}
 
  |}
  
This packet is send when a player clicks a recipe in the crafting book that is craftable (white border).
+
==== Update Attributes ====
  
1. Return Entries:
+
Sets {{Minecraft Wiki|Attribute|attributes}} on the given entity.
* All the items on the crafting slot are set to null/empty.
 
* Every entry item stack will be added to the player inventory, to the specific player slot.
 
 
 
2. Prepare Entries:
 
* All the items on the player inventory slots their quantity is decreased by 1.
 
* Every entry item stack will be put in the proper crafting grid slot.
 
 
 
The server will send a Confirm Transaction packet back to the client with the provided transaction id.
 
 
 
==== Client Status ====
 
 
 
Sent when the client is ready to complete login and when the client is ready to respawn after death.
 
  
 
{| class="wikitable"
 
{| class="wikitable"
Line 785: Line 603:
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
  ! Field Name
+
  ! colspan="2"| Field Name
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="1"| 0x04
+
  | rowspan="6"| 0x71
  |rowspan="1"| Play
+
  | rowspan="6"| Play
  |rowspan="1"| Server
+
  | rowspan="6"| Client
  | Action ID
+
  | colspan="2"| Entity ID
  | VarInt Enum
+
  | colspan="2"| VarInt
  | See below
+
|
 +
|-
 +
| colspan="2"| Number Of Properties
 +
| colspan="2"| VarInt
 +
| Number of elements in the following array.
 +
|-
 +
| rowspan="4"| Property
 +
| {{change|Key|Id}}
 +
| rowspan="4"| Array
 +
| {{change|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 {{Minecraft Wiki|Attribute#Modifiers}}. Modifier Data defined below.
 
  |}
 
  |}
  
''Action ID'' values:
+
Known Key values (see also {{Minecraft Wiki|Attribute#Modifiers}}):
  
 
{| class="wikitable"
 
{| class="wikitable"
 
  |-
 
  |-
  ! Action ID
+
  ! Id
  ! Action
+
  ! Key
 +
! Default
 +
! Min
 +
! Max
 +
! Label
 
  |-
 
  |-
 
  | 0
 
  | 0
  | Perform respawn
+
  | generic.armor
 +
| 0.0
 +
| 0.0
 +
| 30.0
 +
| Armor.
 
  |-
 
  |-
 
  | 1
 
  | 1
  | Request stats
+
  | 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.
 +
|- {{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
 +
| 0.0
 +
| 2048.0
 +
| Follow Range.
 
  |-
 
  |-
  | {{Change|2|}}
+
  | 9
  | {{Change|Open inventory|}}
+
| horse.jump_strength
  |}
+
| 0.7
 
+
  | 0.0
==== Crafting Book Data ====
+
| 2.0
 
+
  | Jump Strength.
{| class="wikitable"
+
|-
  ! Packet ID
+
  | 10
  ! State
+
  | generic.knockback_resistance
  ! Bound To
+
  | 0.0
  !colspan="2"| Field Name
+
  | 0.0
  ! Field Type
+
  | 1.0
  ! Notes
+
  | Knockback Resistance.
 
  |-
 
  |-
  |rowspan="5"| 0x17
+
  | 11
  |rowspan="5"| Play
+
  | generic.luck
  |rowspan="5"| Server
+
  | 0.0
  |colspan="2"| Type
+
  | -1024.0
  | Int
+
  | 1024.0
  | Determines the format of the rest of the packet
+
  | Luck.
 
  |-
 
  |-
  ! Type
+
  | 12
  ! Field Name
+
  | generic.max_absorption
  !
+
  | 0.0
  !
+
  | 0.0
 +
| 2048.0
 +
| Max Absorption.
 
  |-
 
  |-
  | 1: Displayed Recipe
+
  | 13
  | Recipe ID
+
| generic.max_health
  | Int
+
| 20.0
  | The internal id of the displayed recipe.
+
  | 1.0
 +
  | 1024.0
 +
  | Max Health.
 
  |-
 
  |-
  |rowspan="2"| 2: Crafting Book Status
+
  | 14
  | Crafting Book Open
+
| generic.movement_speed
  | Boolean
+
| 0.7
  | Whether the player has the crafting book currently openened/active.
+
| 0.0
 +
| 1024.0
 +
| Movement Speed.
 +
|- {{added}}
 +
| 15
 +
| generic.scale
 +
| 1.0
 +
  | 0.0625
 +
  | 16.0
 +
  | Scale.
 
  |-
 
  |-
  | Crafting Filter
+
  | 16
  | Boolean
+
  | zombie.spawn_reinforcements
  | Whether the player has the crafting filter option currently active.
+
  | 0.0
 +
| 0.0
 +
| 1.0
 +
| Spawn Reinforcements Chance.
 +
|- {{added}}
 +
| 17
 +
| generic.step_height
 +
| 0.6
 +
| 0.0
 +
| 10.0
 +
| Step Height.
 
  |}
 
  |}
  
The Crafting Book Status type is send when the player closes its inventory.
+
''Modifier Data'' structure:
 
 
==== Advancement Tab ====
 
  
 
{| class="wikitable"
 
{| class="wikitable"
  ! Packet ID
+
  |-
! State
 
! Bound To
 
 
  ! Field Name
 
  ! Field Name
 
  ! Field Type
 
  ! Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="2"| 0x20
+
  | UUID
  |rowspan="2"| Play
+
| UUID
  |rowspan="2"| Server
+
  |
  | Action
+
  |-
  | VarInt enum
+
  | Amount
  | 0: Opened tab, 1: Closed screen
+
  | Double
 +
  | May be positive or negative.
 
  |-
 
  |-
  | Tab ID
+
  | Operation
  | Optional identifier
+
  | Byte
  | Only present if action is Opened tab
+
  | See below.
 
  |}
 
  |}
  
== Handshaking ==
+
The operation controls how the base value of the modifier is changed.
 
 
=== Clientbound ===
 
 
 
No changes so far.
 
 
 
=== Serverbound ===
 
  
No changes so far.
+
* 0: Add/subtract amount
 +
* 1: Add/subtract amount percent of the current value
 +
* 2: Multiply by amount percent
  
==== Handshake ====
+
All of the 0's are applied first, and then the 1's, and then the 2's.
  
This causes the server to switch into the target state.
+
==== Entity Effect ====
  
 
{| class="wikitable"
 
{| class="wikitable"
Line 897: Line 814:
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
  |rowspan="4"| 0x00
+
  | rowspan="7"| 0x72
  |rowspan="4"| Handshaking
+
  | rowspan="7"| Play
  |rowspan="4"| Server
+
  | rowspan="7"| Client
  | Protocol Version
+
  | Entity ID
 +
| VarInt
 +
|
 +
|-
 +
| Effect ID
 
  | VarInt
 
  | VarInt
  | See [[protocol version numbers]] (currently {{change|316|330}})
+
  | See {{Minecraft Wiki|Status effect#Effect list|this table}}.
 +
|-
 +
| Amplifier
 +
| Byte
 +
| Notchian client displays effect level as Amplifier + 1.
 
  |-
 
  |-
  | Server Address
+
  | Duration
  | String
+
  | VarInt
  | Hostname or IP, e.g. localhost or 127.0.0.1, that was used to connect.  The Notchian server does not use this information.
+
  | Duration in ticks. (-1 for infinite)
|-
 
| Server Port
 
| Unsigned Short
 
| Default is 25565.  The Notchian server does not use this information.
 
 
  |-
 
  |-
  | Next State
+
  | Flags
  | VarInt Enum
+
  | Byte
  | 1 for [[#Status|status]], 2 for [[#Login|login]]
+
  | Bit field, see below.
 +
|- {{removed}}
 +
| Has Factor Data
 +
| Boolean
 +
| Used in DARKNESS effect
 +
|- {{removed}}
 +
| Factor Codec
 +
| NBT Tag
 +
| See below
 
  |}
 
  |}
  
== Status ==
+
{{Need Info|What exact effect does the blend bit flag have on the client? What happens if it is used on effects besides DARKNESS?}}
 +
 
 +
Within flags:
  
=== Clientbound ===
+
* 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.}}
  
No changes so far.
+
{{change|Factor Data|}}
 +
{| class="wikitable" {{removed}}
 +
!Name
 +
!Type
 +
!style="width: 250px;" colspan="2"| 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 ===
 
=== Serverbound ===
  
No changes so far.
+
==== Cookie Response (play) ====
  
== Login ==
+
Response to a [[#Cookie_Request_(play)|Cookie Request (play)]] from the server. The Notchian server only accepts responses of up to 5 kiB in size.
  
=== Clientbound ===
+
{| class="wikitable" {{added}}
 
+
! Packet ID
No changes so far.
+
! State
 
+
! Bound To
=== Serverbound ===
+
! colspan="2"| Field Name
 
+
! colspan="2"| Field Type
No changes so far.
+
! Notes
 +
|-
 +
| rowspan="3"| 0x6A
 +
| rowspan="3"| Play
 +
| rowspan="3"| Server
 +
| colspan="2"| Key
 +
| colspan="2"| Identifier
 +
| The identifier of the cookie.
 +
|-
 +
| colspan="2"| Has Payload
 +
| colspan="2"| Boolean
 +
| The payload is only present if the cookie exists on the client.
 +
|-
 +
| colspan="2"| Payload
 +
| colspan="2"| Optional ByteArray(5120)
 +
| The data of the cookie, if any.
 +
|}
  
 
[[Category:Minecraft Modern]]
 
[[Category:Minecraft Modern]]

Latest revision as of 05:25, 26 February 2024

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

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

Contents

Data types

No changes so far.

Packets

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

New/modified data types

No changes so far.

Entity Metadata

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

Armadillo

Extends Animal.

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

Block Actions

No changes so far.

Inventories

No changes so far.

Plugin Channels

No changes so far.

Handshake

Serverbound

Handshake

This causes the server to switch into the target state.

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

Status

Clientbound

No changes so far.

Serverbound

No changes so far.

Login

Clientbound

Cookie Request (login)

Requests a cookie that was previously stored.

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

Serverbound

Cookie Response (login)

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

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

Configuration

Clientbound

Cookie Request (configuration)

Requests a cookie that was previously stored.

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

Store Cookie (configuration)

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

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

Transfer (configuration)

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

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

Serverbound

Cookie Response (configuration)

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

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

Play

Clientbound

Cookie Request (play)

Requests a cookie that was previously stored.

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

Store Cookie (play)

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

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

Transfer (play)

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

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

Update Attributes

Sets attributes on the given entity.

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

Known Key values (see also Attribute#Modifiers):

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

Modifier Data structure:

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

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

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

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

Entity Effect

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

Within flags:

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

Factor Data

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

Serverbound

Cookie Response (play)

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

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