Difference between revisions of "Pre-release protocol"

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(1.14.2 Pre-Release 1)
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This page documents the changes from the [[Protocol|last stable Minecraft release]] (currently [[Protocol version numbers|1.13.2, protocol 404]]) to the current pre-release (currently [[Protocol version numbers|1.14.2 Pre-Release 1, protocol 481]]). Note that this page contains bleeding-edge information that may not be completely or correctly documented.
+
This page documents the changes from the [[Protocol|last stable Minecraft release]] (currently [[Protocol version numbers|1.20.4, protocol 765]]) to the current pre-release (currently [[Protocol version numbers|24w13a, protocol {{Snapshot PVN|1073742006}}]]). Note that this page contains bleeding-edge information that may not be completely or correctly documented.
  
 
One who wishes to commandeer the merging of this into [[Protocol]] when an update is made must be sure to respect any changes that may have occurred to the respective packets there.
 
One who wishes to commandeer the merging of this into [[Protocol]] when an update is made must be sure to respect any changes that may have occurred to the respective packets there.
Line 9: Line 9:
 
=== Data types ===
 
=== Data types ===
  
−
==== Position ====
+
No changes so far.
−
 
 
−
64-bit value split in to three parts
 
−
 
 
−
* x: 26 MSBs
 
−
* z: 26 {{change|LSBs|middle bits}}
 
−
* y: 12 {{change|bits between them|LSBs}}
 
−
 
 
−
Encoded as followed:
 
−
 
 
−
((x & 0x3FFFFFF) << 38) | {{change|((y & 0xFFF) << 26) {{!}} (z & 0x3FFFFFF)|((z & 0x3FFFFFF) << 12) {{!}} (y & 0xFFF)}}
 
−
 
 
−
And decoded as:
 
−
 
 
−
val = read_unsigned_long();
 
−
x = val >> 38;
 
−
y = {{change|(val >> 26) & 0xFFF|val & 0xFFF}};
 
−
z = {{change|val << 38 >> 38|(val << 26 >> 38)}};
 
−
 
 
−
Note: The details of bit shifting are rather language dependent; the above may work in Java but probably won't in other languages without some tweaking. In particular, you will usually receive positive numbers even if the actual coordinates are negative. This can be fixed by adding something like the following:
 
−
 
 
−
if x >= 2^25 { x -= 2^26 }
 
−
if y >= 2^11 { y -= 2^12 }
 
−
if z >= 2^25 { z -= 2^26 }
 
−
 
 
−
==== Particle ====
 
  
 +
=== Packets ===
  
 
{| class="wikitable"
 
{| class="wikitable"
 +
! ID
 +
! Packet name
 +
!colspan="2"| Documentation
 
  |-
 
  |-
−
  ! Particle Name
+
  !colspan="4"| Handshake serverbound
−
! Particle ID
+
  {{PacketList|0x00|Handshake}}
−
! Data
 
−
|-
 
−
| <code>minecraft:falling_lava</code>
 
−
| {{change||10}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:landing_lava</code>
 
−
| {{change||11}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:dripping_water</code>
 
−
| {{change|10|12}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:falling_water</code>
 
−
| {{change||13}}
 
−
  | None
 
−
|-
 
−
| <code>minecraft:dust</code>
 
−
| {{change|11|14}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:effect</code>
 
−
| {{change|12|15}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:elder_guardian</code>
 
−
| {{change|13|16}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:enchanted_hit</code>
 
−
| {{change|14|17}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:enchant</code>
 
−
| {{change|15|18}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:end_rod</code>
 
−
| {{change|16|19}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:entity_effect</code>
 
−
| {{change|17|20}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:explosion_emitter</code>
 
−
| {{change|18|21}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:explosion</code>
 
−
| {{change|19|22}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:falling_dust</code>
 
−
| {{change|20|23}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:firework</code>
 
−
| {{change|21|24}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:fishing</code>
 
−
| {{change|22|25}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:flame</code>
 
−
| {{change|23|26}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:flash</code>
 
−
| {{change||27}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:happy_villager</code>
 
−
| {{change|24|28}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:composter</code>
 
−
| {{change||29}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:heart</code>
 
−
| {{change|25|30}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:instant_effect</code>
 
−
| {{change|26|31}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:item</code>
 
−
| {{change|27|32}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:item_slime</code>
 
−
| {{change|28|33}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:item_snowball</code>
 
−
| {{change|29|34}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:large_smoke</code>
 
−
| {{change|30|35}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:lava</code>
 
−
| {{change|31|36}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:mycelium</code>
 
−
| {{change|32|37}}
 
−
| None
 
−
|-
 
−
| <code>minecraft:note</code>
 
−
| {{change|33|38}}
 
−
| None
 
 
  |-
 
  |-
−
  | <code>minecraft:poof</code>
+
  !colspan="4"| Login clientbound
−
  | {{change|34|39}}
+
  {{PacketList|0x01|Encryption Request}}
−
  | None
+
  {{PacketList|0x05|Cookie Request (login)|rel=added}}
 
  |-
 
  |-
−
  | <code>minecraft:portal</code>
+
  !colspan="4"| Login serverbound
−
  | {{change|35|40}}
+
  {{PacketList|0x04|Cookie Response (login)|rel=added}}
−
| None
 
 
  |-
 
  |-
−
  | <code>minecraft:rain</code>
+
  !colspan="4"| Configuration clientbound
−
  | {{change|36|41}}
+
  {{PacketList|0x00|Cookie Request (configuration)|rel=added}}
−
  | None
+
{{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|0x06|Reset Chat|rel=added}}
 +
  {{PacketList|{{change|0x05|0x07}}|Registry Data}}
 +
{{PacketList|{{change|0x06|0x08}}|Remove Resource Pack (configuration)|pre=unchanged}}
 +
{{PacketList|{{change|0x07|0x09}}|Add Resource Pack (configuration)|pre=unchanged}}
 +
{{PacketList|0x0A|Store Cookie (configuration)|rel=added}}
 +
{{PacketList|0x0B|Transfer (configuration)|rel=added}}
 +
{{PacketList|{{change|0x08|0x0C}}|Feature Flags|pre=unchanged}}
 +
{{PacketList|{{change|0x09|0x0D}}|Update Tags (configuration)|pre=unchanged}}
 +
{{PacketList|0x0E|Clientbound Known Packs|rel=added}}
 
  |-
 
  |-
−
  | <code>minecraft:smoke</code>
+
  !colspan="4"| Configuration serverbound
−
  | {{change|37|42}}
+
  {{PacketList|0x01|Cookie Response (configuration)|rel=added}}
−
  | None
+
{{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}}
 +
{{PacketList|0x07|Serverbound Known Packs|rel=added}}
 
  |-
 
  |-
−
  | <code>minecraft:sneeze</code>
+
  !colspan="4"| Play clientbound
−
  | {{change||43}}
+
  {{PacketList|0x16|Cookie Request (Play)|rel=added}}
−
  | None
+
{{PacketList|{{change|0x16|0x17}}|Set Cooldown|pre=unchanged}}
 +
{{PacketList|{{change|0x17|0x18}}|Chat Suggestions|pre=unchanged}}
 +
{{PacketList|{{change|0x18|0x19}}|Clientbound Plugin Message (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x19|0x1A}}|Damage Event|pre=unchanged}}
 +
{{PacketList|0x1B|Debug Sample|rel=added}}
 +
{{PacketList|{{change|0x1A|0x1C}}|Delete Message|pre=unchanged}}
 +
{{PacketList|{{change|0x1B|0x1D}}|Disconnect (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x1C|0x1E}}|Disguised Chat Message|pre=unchanged}}
 +
{{PacketList|{{change|0x1D|0x1F}}|Entity Event|pre=unchanged}}
 +
{{PacketList|{{change|0x1E|0x20}}|Explosion|pre=unchanged}}
 +
{{PacketList|{{change|0x1F|0x21}}|Unload Chunk|pre=unchanged}}
 +
{{PacketList|{{change|0x20|0x22}}|Game Event|pre=unchanged}}
 +
{{PacketList|{{change|0x21|0x23}}|Open Horse Screen|pre=unchanged}}
 +
{{PacketList|{{change|0x22|0x24}}|Hurt Animation|pre=unchanged}}
 +
{{PacketList|{{change|0x23|0x25}}|Initialize World Border|pre=unchanged}}
 +
{{PacketList|{{change|0x24|0x26}}|Clientbound Keep Alive (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x25|0x27}}|Chunk Data and Update Light|pre=unchanged}}
 +
{{PacketList|{{change|0x26|0x28}}|World Event|pre=unchanged}}
 +
{{PacketList|{{change|0x27|0x29}}|Particle|pre=unchanged}}
 +
{{PacketList|{{change|0x28|0x2A}}|Update Light|pre=unchanged}}
 +
{{PacketList|{{change|0x29|0x2B}}|Login (play)}}
 +
{{PacketList|{{change|0x2A|0x2C}}|Map Data|pre=unchanged}}
 +
{{PacketList|{{change|0x2B|0x2D}}|Merchant Offers|pre=unchanged}}
 +
{{PacketList|{{change|0x2C|0x2E}}|Update Entity Position|pre=unchanged}}
 +
{{PacketList|{{change|0x2D|0x2F}}|Update Entity Position and Rotation|pre=unchanged}}
 +
  {{PacketList|{{change|0x2E|0x30}}|Update Entity Rotation|pre=unchanged}}
 +
{{PacketList|{{change|0x2F|0x31}}|Move Vehicle|pre=unchanged}}
 +
{{PacketList|{{change|0x30|0x32}}|Open Book|pre=unchanged}}
 +
{{PacketList|{{change|0x31|0x33}}|Open Screen|pre=unchanged}}
 +
{{PacketList|{{change|0x32|0x34}}|Open Sign Editor|pre=unchanged}}
 +
{{PacketList|{{change|0x33|0x35}}|Ping (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x34|0x36}}|Ping Response (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x35|0x37}}|Place Ghost Recipe|pre=unchanged}}
 +
{{PacketList|{{change|0x36|0x38}}|Player Abilities|pre=unchanged}}
 +
{{PacketList|{{change|0x37|0x39}}|Player Chat Message|pre=unchanged}}
 +
{{PacketList|{{change|0x38|0x3A}}|End Combat|pre=unchanged}}
 +
{{PacketList|{{change|0x39|0x3B}}|Enter Combat|pre=unchanged}}
 +
{{PacketList|{{change|0x3A|0x3C}}|Combat Death|pre=unchanged}}
 +
{{PacketList|{{change|0x3B|0x3D}}|Player Info Remove|pre=unchanged}}
 +
{{PacketList|{{change|0x3C|0x3E}}|Player Info Update|pre=unchanged}}
 +
{{PacketList|{{change|0x3D|0x3F}}|Look At|pre=unchanged}}
 +
{{PacketList|{{change|0x3E|0x40}}|Synchronize Player Position|pre=unchanged}}
 +
{{PacketList|{{change|0x3F|0x41}}|Update Recipe Book|pre=unchanged}}
 +
{{PacketList|{{change|0x40|0x42}}|Remove Entities|pre=unchanged}}
 +
{{PacketList|{{change|0x41|0x43}}|Remove Entity Effect|pre=unchanged}}
 +
{{PacketList|{{change|0x42|0x44}}|Reset Score|pre=unchanged}}
 +
{{PacketList|{{change|0x43|0x45}}|Remove Resource Pack (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x44|0x46}}|Add Resource Pack (play)|pre=unchanged}}
 +
{{PacketList|{{change|0x45|0x47}}|Respawn}}
 +
{{PacketList|{{change|0x46|0x48}}|Set Head Rotation|pre=unchanged}}
 +
{{PacketList|{{change|0x47|0x49}}|Update Section Blocks|pre=unchanged}}
 +
{{PacketList|{{change|0x48|0x4A}}|Select Advancements Tab|pre=unchanged}}
 +
{{PacketList|{{change|0x49|0x4B}}|Server Data|pre=unchanged}}
 +
{{PacketList|{{change|0x4A|0x4C}}|Set Action Bar Text|pre=unchanged}}
 +
{{PacketList|{{change|0x4B|0x4D}}|Set Border Center|pre=unchanged}}
 +
{{PacketList|{{change|0x4C|0x4E}}|Set Border Lerp Size|pre=unchanged}}
 +
{{PacketList|{{change|0x4D|0x4F}}|Set Border Size|pre=unchanged}}
 +
{{PacketList|{{change|0x4E|0x50}}|Set Border Warning Delay|pre=unchanged}}
 +
{{PacketList|{{change|0x4F|0x51}}|Set Border Warning Distance|pre=unchanged}}
 +
{{PacketList|{{change|0x50|0x52}}|Set Camera|pre=unchanged}}
 +
{{PacketList|{{change|0x51|0x53}}|Set Held Item|pre=unchanged}}
 +
{{PacketList|{{change|0x52|0x54}}|Set Center Chunk|pre=unchanged}}
 +
{{PacketList|{{change|0x53|0x55}}|Set Render Distance|pre=unchanged}}
 +
{{PacketList|{{change|0x54|0x56}}|Set Default Spawn Position|pre=unchanged}}
 +
{{PacketList|{{change|0x55|0x57}}|Display Objective|pre=unchanged}}
 +
{{PacketList|{{change|0x56|0x58}}|Set Entity Metadata|pre=unchanged}}
 +
{{PacketList|{{change|0x57|0x59}}|Link Entities|pre=unchanged}}
 +
{{PacketList|{{change|0x58|0x5A}}|Set Entity Velocity|pre=unchanged}}
 +
{{PacketList|{{change|0x59|0x5B}}|Set Equipment|pre=unchanged}}
 +
{{PacketList|{{change|0x5A|0x5C}}|Set Experience|pre=unchanged}}
 +
{{PacketList|{{change|0x5B|0x5D}}|Set Health|pre=unchanged}}
 +
{{PacketList|{{change|0x5C|0x5E}}|Update Objectives|pre=unchanged}}
 +
{{PacketList|{{change|0x5D|0x5F}}|Set Passengers|pre=unchanged}}
 +
{{PacketList|{{change|0x5E|0x60}}|Update Teams|pre=unchanged}}
 +
{{PacketList|{{change|0x5F|0x61}}|Update Score|pre=unchanged}}
 +
{{PacketList|{{change|0x60|0x62}}|Set Simulation Distance|pre=unchanged}}
 +
{{PacketList|{{change|0x61|0x63}}|Set Subtitle Text|pre=unchanged}}
 +
{{PacketList|{{change|0x62|0x64}}|Update Time|pre=unchanged}}
 +
{{PacketList|{{change|0x63|0x65}}|Set Title Text|pre=unchanged}}
 +
{{PacketList|{{change|0x64|0x66}}|Set Title Animation Times|pre=unchanged}}
 +
{{PacketList|{{change|0x65|0x67}}|Entity Sound Effect|pre=unchanged}}
 +
{{PacketList|{{change|0x66|0x68}}|Sound Effect|pre=unchanged}}
 +
{{PacketList|{{change|0x67|0x69}}|Start Configuration|pre=unchanged}}
 +
{{PacketList|{{change|0x68|0x6A}}|Stop Sound|pre=unchanged}}
 +
{{PacketList|0x6B|Store Cookie (Play)|rel=added}}
 +
{{PacketList|{{change|0x69|0x6C}}|System Chat Message|pre=unchanged}}
 +
{{PacketList|{{change|0x6A|0x6D}}|Set Tab List Header And Footer|pre=unchanged}}
 +
{{PacketList|{{change|0x6B|0x6E}}|Tag Query Response|pre=unchanged}}
 +
{{PacketList|{{change|0x6C|0x6F}}|Pickup Item|pre=unchanged}}
 +
{{PacketList|{{change|0x6D|0x70}}|Teleport Entity|pre=unchanged}}
 +
{{PacketList|{{change|0x6E|0x71}}|Set Ticking State|pre=unchanged}}
 +
{{PacketList|{{change|0x6F|0x72}}|Step Tick|pre=unchanged}}
 +
{{PacketList|0x73|Transfer (Play)|rel=added}}
 +
{{PacketList|{{change|0x70|0x74}}|Update Advancements|pre=unchanged}}
 +
{{PacketList|{{change|0x71|0x75}}|Update Attributes}}
 +
{{PacketList|{{change|0x72|0x76}}|Entity Effect}}
 +
{{PacketList|{{change|0x73|0x77}}|Update Recipes|pre=unchanged}}
 +
{{PacketList|{{change|0x74|0x78}}|Update Tags (play)|pre=unchanged}}
 
  |-
 
  |-
−
  | <code>minecraft:spit</code>
+
  !colspan="4"| Play serverbound
−
  | {{change|38|44}}
+
  {{PacketList|0x04|Chat Command}}
−
  | None
+
  {{PacketList|0x05|Signed Chat Command|rel=added}}
−
|-
+
  {{PacketList|{{change|0x05|0x06}}|Chat Message|pre=unchanged}}
−
| <code>minecraft:squid_ink</code>
+
  {{PacketList|{{change|0x06|0x07}}|Player Session|pre=unchanged}}
−
  | {{change|39|45}}
+
  {{PacketList|{{change|0x07|0x08}}|Chunk Batch Received|pre=unchanged}}
−
| None
+
  {{PacketList|{{change|0x08|0x09}}|Client Status|pre=unchanged}}
−
|-
+
  {{PacketList|{{change|0x09|0x0A}}|Client Information (play)|pre=unchanged}}
−
| <code>minecraft:sweep_attack</code>
+
  {{PacketList|{{change|0x0A|0x0B}}|Command Suggestions Request|pre=unchanged}}
−
  | {{change|40|46}}
+
  {{PacketList|{{change|0x0B|0x0C}}|Acknowledge Configuration|pre=unchanged}}
−
| None
+
  {{PacketList|{{change|0x0C|0x0D}}|Click Container Button|pre=unchanged}}
−
|-
+
  {{PacketList|{{change|0x0D|0x0E}}|Click Container|pre=unchanged}}
−
| <code>minecraft:totem_of_undying</code>
+
  {{PacketList|{{change|0x0E|0x0F}}|Close Container|pre=unchanged}}
−
  | {{change|41|47}}
+
  {{PacketList|{{change|0x0F|0x10}}|Change Container Slot State|pre=unchanged}}
−
| None
+
  {{PacketList|0x11|Cookie Response (play)|rel=added}}
−
|-
+
  {{PacketList|{{change|0x10|0x12}}|Serverbound Plugin Message (play)|pre=unchanged}}
−
| <code>minecraft:underwater</code>
+
{{PacketList|0x13|Debug Sample Subscription|rel=added}}
−
  | {{change|42|48}}
+
  {{PacketList|{{change|0x11|0x14}}|Edit Book|pre=unchanged}}
−
| None
+
{{PacketList|{{change|0x12|0x15}}|Query Entity Tag|pre=unchanged}}
−
|-
+
{{PacketList|{{change|0x13|0x16}}|Interact|pre=unchanged}}
−
| <code>minecraft:splash</code>
+
{{PacketList|{{change|0x14|0x17}}|Jigsaw Generate|pre=unchanged}}
−
  | {{change|43|49}}
+
{{PacketList|{{change|0x15|0x18}}|Serverbound Keep Alive (play)|pre=unchanged}}
−
| None
+
{{PacketList|{{change|0x16|0x19}}|Lock Difficulty|pre=unchanged}}
−
|-
+
{{PacketList|{{change|0x17|0x1A}}|Set Player Position|pre=unchanged}}
−
| <code>minecraft:witch</code>
+
{{PacketList|{{change|0x18|0x1B}}|Set Player Position and Rotation|pre=unchanged}}
−
  | {{change|44|50}}
+
{{PacketList|{{change|0x19|0x1C}}|Set Player Rotation|pre=unchanged}}
−
| None
+
{{PacketList|{{change|0x1A|0x1D}}|Set Player On Ground|pre=unchanged}}
−
|-
+
{{PacketList|{{change|0x1B|0x1E}}|Move Vehicle|pre=unchanged}}
−
| <code>minecraft:bubble_pop</code>
+
{{PacketList|{{change|0x1C|0x1F}}|Paddle Boat|pre=unchanged}}
−
  | {{change|45|51}}
+
{{PacketList|{{change|0x1D|0x20}}|Pick Item|pre=unchanged}}
−
| None
+
{{PacketList|{{change|0x1E|0x21}}|Ping Request (play)|pre=unchanged}}
−
|-
+
{{PacketList|{{change|0x1F|0x22}}|Place Recipe|pre=unchanged}}
−
| <code>minecraft:current_down</code>
+
{{PacketList|{{change|0x20|0x23}}|Player Abilities|pre=unchanged}}
−
  | {{change|46|52}}
+
{{PacketList|{{change|0x21|0x24}}|Player Action|pre=unchanged}}
−
| None
+
{{PacketList|{{change|0x22|0x25}}|Player Command|pre=unchanged}}
−
|-
+
{{PacketList|{{change|0x23|0x26}}|Player Input|pre=unchanged}}
−
| <code>minecraft:bubble_column_up</code>
+
{{PacketList|{{change|0x24|0x27}}|Pong (play)|pre=unchanged}}
−
  | {{change|47|53}}
+
{{PacketList|{{change|0x25|0x28}}|Change Recipe Book Settings|pre=unchanged}}
−
| None
+
{{PacketList|{{change|0x26|0x29}}|Set Seen Recipe|pre=unchanged}}
−
|-
+
{{PacketList|{{change|0x27|0x2A}}|Rename Item|pre=unchanged}}
−
| <code>minecraft:nautilus</code>
+
{{PacketList|{{change|0x28|0x2B}}|Resource Pack Response (play)|pre=unchanged}}
−
  | {{change|48|54}}
+
{{PacketList|{{change|0x29|0x2C}}|Seen Advancements|pre=unchanged}}
−
| None
+
{{PacketList|{{change|0x2A|0x2D}}|Select Trade|pre=unchanged}}
−
|-
+
{{PacketList|{{change|0x2B|0x2E}}|Set Beacon Effect|pre=unchanged}}
−
| <code>minecraft:dolphin</code>
+
{{PacketList|{{change|0x2C|0x2F}}|Set Held Item|pre=unchanged}}
−
  | {{change|49|55}}
+
{{PacketList|{{change|0x2D|0x30}}|Program Command Block|pre=unchanged}}
−
| None
+
{{PacketList|{{change|0x2E|0x31}}|Program Command Block Minecart|pre=unchanged}}
−
|-
+
{{PacketList|{{change|0x2F|0x32}}|Set Creative Mode Slot|pre=unchanged}}
−
| <code>minecraft:campfire_cosy_smoke</code>
+
{{PacketList|{{change|0x30|0x33}}|Program Jigsaw Block|pre=unchanged}}
−
  | {{change||56}}
+
{{PacketList|{{change|0x31|0x34}}|Program Structure Block|pre=unchanged}}
−
| None
+
{{PacketList|{{change|0x32|0x35}}|Update Sign|pre=unchanged}}
−
|-
+
{{PacketList|{{change|0x33|0x36}}|Swing Arm|pre=unchanged}}
−
| <code>minecraft:campfire_signal_smoke</code>
+
{{PacketList|{{change|0x34|0x37}}|Teleport To Entity|pre=unchanged}}
−
  | {{change||57}}
+
{{PacketList|{{change|0x35|0x38}}|Use Item On|pre=unchanged}}
−
| None
+
{{PacketList|{{change|0x36|0x39}}|Use Item|pre=unchanged}}
−
|}
 
−
 
 
−
=== Packets ===
 
−
 
 
−
{| class="wikitable"
 
−
  ! ID
 
−
! Packet name
 
−
!colspan="2"| Documentation
 
−
|-
 
−
!colspan="4"| Handshaking serverbound
 
−
{{PacketList|0x00|Handshake}}
 
−
|-
 
−
!colspan="4"| Play clientbound
 
−
{{PacketList|0x00|Spawn Object}}
 
−
{{PacketList|0x01|Spawn Experience Orb|pre=unchanged}}
 
−
{{PacketList|0x02|Spawn Global Entity|pre=unchanged}}
 
−
{{PacketList|0x03|Spawn Mob|pre=unchanged}}
 
−
{{PacketList|0x04|Spawn Painting|pre=unchanged}}
 
−
{{PacketList|0x05|Spawn Player|pre=unchanged}}
 
−
{{PacketList|0x06|Animation (clientbound)|pre=unchanged}}
 
−
{{PacketList|0x07|Statistics|pre=unchanged}}
 
−
{{PacketList|0x08|Block Break Animation|pre=unchanged}}
 
−
{{PacketList|0x09|Update Block Entity}}
 
−
{{PacketList|0x0A|Block Action|pre=unchanged}}
 
−
{{PacketList|0x0B|Block Change|pre=unchanged}}
 
−
{{PacketList|0x0C|Boss Bar|pre=unchanged}}
 
−
{{PacketList|0x0D|Server Difficulty}}
 
−
{{PacketList|0x0E|Chat Message (clientbound)|pre=unchanged}}
 
−
{{PacketList|0x0F|Multi Block Change|pre=unchanged}}
 
−
{{PacketList|0x10|Tab-Complete (clientbound)|pre=unchanged}}
 
−
{{PacketList|0x11|Declare Commands|pre=unchanged}}
 
−
{{PacketList|0x12|Confirm Transaction (clientbound)|pre=unchanged}}
 
−
{{PacketList|0x13|Close Window (clientbound)|pre=unchanged}}
 
−
{{PacketList|{{change|0x15|0x14}}|Window Items|pre=unchanged}}
 
−
{{PacketList|{{change|0x16|0x15}}|Window Property|pre=unchanged}}
 
−
{{PacketList|{{change|0x17|0x16}}|Set Slot|pre=unchanged}}
 
−
{{PacketList|{{change|0x18|0x17}}|Set Cooldown|pre=unchanged}}
 
−
{{PacketList|{{change|0x19|0x18}}|Plugin Message (clientbound)}}
 
−
{{PacketList|{{change|0x1A|0x19}}|Named Sound Effect|pre=unchanged}}
 
−
{{PacketList|{{change|0x1B|0x1A}}|Disconnect (play)|pre=unchanged}}
 
−
{{PacketList|{{change|0x1C|0x1B}}|Entity Status|pre=unchanged}}
 
−
{{PacketList|{{change|0x1E|0x1C}}|Explosion|pre=unchanged}}
 
−
{{PacketList|{{change|0x1F|0x1D}}|Unload Chunk|pre=unchanged}}
 
−
{{PacketList|{{change|0x20|0x1E}}|Change Game State|pre=unchanged}}
 
−
{{PacketList|0x1F|Open Horse Window|rel=added}}
 
−
{{PacketList|{{change|0x21|0x20}}|Keep Alive (clientbound)|pre=unchanged}}
 
−
{{PacketList|{{change|0x22|0x21}}|Chunk Data}}
 
−
{{PacketList|{{change|0x23|0x22}}|Effect|pre=unchanged}}
 
−
{{PacketList|{{change|0x24|0x23}}|Particle|pre=unchanged}}
 
−
{{PacketList|0x24|Update Light|rel=added}}
 
−
{{PacketList|0x25|Join Game}}
 
−
{{PacketList|0x26|Map Data}}
 
−
{{PacketList|0x27|Trade List}}
 
−
{{PacketList|0x28|Entity Relative Move|pre=unchanged}}
 
−
{{PacketList|0x29|Entity Look And Relative Move|pre=unchanged}}
 
−
{{PacketList|0x2A|Entity Look|pre=unchanged}}
 
−
{{PacketList|{{change|0x27|0x2B}}|Entity|pre=unchanged}}
 
−
{{PacketList|{{change|0x2B|0x2C}}|Vehicle Move (clientbound)|pre=unchanged}}
 
−
{{PacketList|0x2D|Open Book}}
 
−
{{PacketList|{{change|0x14|0x2E}}|Open Window}}
 
−
{{PacketList|{{change|0x2C|0x2F}}|Open Sign Editor|pre=unchanged}}
 
−
{{PacketList|{{change|0x2D|0x30}}|Craft Recipe Response|pre=unchanged}}
 
−
{{PacketList|{{change|0x2E|0x31}}|Player Abilities (clientbound)|pre=unchanged}}
 
−
{{PacketList|{{change|0x2F|0x32}}|Combat Event|pre=unchanged}}
 
−
{{PacketList|{{change|0x33}}|Use Bed|pre=removed}}
 
−
{{PacketList|{{change|0x30|0x33}}|Player Info|pre=unchanged}}
 
−
{{PacketList|{{change|0x31|0x34}}|Face Player|pre=unchanged}}
 
−
{{PacketList|{{change|0x32|0x35}}|Player Position And Look (clientbound)|pre=unchanged}}
 
−
{{PacketList|{{change|0x34|0x36}}|Unlock Recipes|pre=unchanged}}
 
−
{{PacketList|{{change|0x35|0x37}}|Destroy Entities|pre=unchanged}}
 
−
{{PacketList|{{change|0x36|0x38}}|Remove Entity Effect|pre=unchanged}}
 
−
{{PacketList|{{change|0x37|0x39}}|Resource Pack Send|pre=unchanged}}
 
−
{{PacketList|{{change|0x38|0x3A}}|Respawn}}
 
−
{{PacketList|{{change|0x39|0x3B}}|Entity Head Look|pre=unchanged}}
 
−
{{PacketList|{{change|0x3A|0x3C}}|Select Advancement Tab|pre=unchanged}}
 
−
{{PacketList|{{change|0x3B|0x3D}}|World Border|pre=unchanged}}
 
−
{{PacketList|{{change|0x3C|0x3E}}|Camera|pre=unchanged}}
 
−
{{PacketList|{{change|0x3D|0x3F}}|Held Item Change (clientbound)|pre=unchanged}}
 
−
{{PacketList|0x40|Update View Position|rel=added}}
 
−
{{PacketList|0x41|Update View Distance|rel=added}}
 
−
{{PacketList|{{change|0x3E|0x42}}|Display Scoreboard|pre=unchanged}}
 
−
{{PacketList|{{change|0x3F|0x43}}|Entity Metadata|pre=unchanged}}
 
−
{{PacketList|{{change|0x40|0x44}}|Attach Entity|pre=unchanged}}
 
−
{{PacketList|{{change|0x41|0x45}}|Entity Velocity|pre=unchanged}}
 
−
{{PacketList|{{change|0x42|0x46}}|Entity Equipment|pre=unchanged}}
 
−
{{PacketList|{{change|0x43|0x47}}|Set Experience|pre=unchanged}}
 
−
{{PacketList|{{change|0x44|0x48}}|Update Health|pre=unchanged}}
 
−
{{PacketList|{{change|0x45|0x49}}|Scoreboard Objective|pre=unchanged}}
 
−
{{PacketList|{{change|0x46|0x4A}}|Set Passengers|pre=unchanged}}
 
−
{{PacketList|{{change|0x47|0x4B}}|Teams|pre=unchanged}}
 
−
{{PacketList|{{change|0x48|0x4C}}|Update Score|pre=unchanged}}
 
−
{{PacketList|{{change|0x49|0x4D}}|Spawn Position|pre=unchanged}}
 
−
{{PacketList|{{change|0x4A|0x4E}}|Time Update|pre=unchanged}}
 
−
{{PacketList|{{change|0x4B|0x4F}}|Title|pre=unchanged}}
 
−
{{PacketList|0x50|Entity Sound Effect}}
 
−
{{PacketList|{{change|0x4D|0x51}}|Sound Effect|pre=unchanged}}
 
−
{{PacketList|{{change|0x4C|0x52}}|Stop Sound|pre=unchanged}}
 
−
{{PacketList|{{change|0x4E|0x53}}|Player List Header And Footer|pre=unchanged}}
 
−
{{PacketList|{{change|0x1D|0x54}}|NBT Query Response|pre=unchanged}}
 
−
{{PacketList|{{change|0x4F|0x55}}|Collect Item|pre=unchanged}}
 
−
{{PacketList|{{change|0x50|0x56}}|Entity Teleport|pre=unchanged}}
 
−
{{PacketList|{{change|0x51|0x57}}|Advancements|pre=unchanged}}
 
−
{{PacketList|{{change|0x52|0x58}}|Entity Properties|pre=unchanged}}
 
−
{{PacketList|{{change|0x53|0x59}}|Entity Effect|pre=unchanged}}
 
−
{{PacketList|{{change|0x54|0x5A}}|Declare Recipes}}
 
−
{{PacketList|{{change|0x55|0x5B}}|Tags}}
 
−
|-
 
−
!colspan="4"| Play serverbound
 
−
{{PacketList|0x00|Teleport Confirm|pre=unchanged}}
 
−
{{PacketList|0x01|Query Block NBT|pre=unchanged}}
 
−
{{PacketList|0x02|Set Difficulty}}
 
−
{{PacketList|{{change|0x02|0x03}}|Chat Message (serverbound)|pre=unchanged}}
 
−
{{PacketList|{{change|0x03|0x04}}|Client Status|pre=unchanged}}
 
−
{{PacketList|{{change|0x04|0x05}}|Client Settings|pre=unchanged}}
 
−
{{PacketList|{{change|0x05|0x06}}|Tab-Complete (serverbound)|pre=unchanged}}
 
−
{{PacketList|{{change|0x06|0x07}}|Confirm Transaction (serverbound)|pre=unchanged}}
 
−
{{PacketList|{{change|0x07|0x08}}|Click Window Button}}
 
−
{{PacketList|{{change|0x08|0x09}}|Click Window|pre=unchanged}}
 
−
{{PacketList|{{change|0x09|0x0A}}|Close Window (serverbound)|pre=unchanged}}
 
−
{{PacketList|{{change|0x0A|0x0B}}|Plugin Message (serverbound)|pre=unchanged}}
 
−
{{PacketList|{{change|0x0B|0x0C}}|Edit Book|pre=unchanged}}
 
−
{{PacketList|{{change|0x0C|0x0D}}|Query Entity NBT|pre=unchanged}}
 
−
{{PacketList|{{change|0x0D|0x0E}}|Use Entity|pre=unchanged}}
 
−
{{PacketList|{{change|0x0E|0x0F}}|Keep Alive (serverbound)|pre=unchanged}}
 
−
{{PacketList|0x10|Lock Difficulty}}
 
−
{{PacketList|{{change|0x10|0x11}}|Player Position|pre=unchanged}}
 
−
{{PacketList|{{change|0x11|0x12}}|Player Position And Look (serverbound)|pre=unchanged}}
 
−
{{PacketList|{{change|0x12|0x13}}|Player Look|pre=unchanged}}
 
−
{{PacketList|{{change|0x0F|0x14}}|Player|pre=unchanged}}
 
−
{{PacketList|{{change|0x13|0x15}}|Vehicle Move (serverbound)|pre=unchanged}}
 
−
{{PacketList|{{change|0x14|0x16}}|Steer Boat|pre=unchanged}}
 
−
{{PacketList|{{change|0x15|0x17}}|Pick Item|pre=unchanged}}
 
−
{{PacketList|{{change|0x16|0x18}}|Craft Recipe Request|pre=unchanged}}
 
−
{{PacketList|{{change|0x17|0x19}}|Player Abilities (serverbound)|pre=unchanged}}
 
−
{{PacketList|{{change|0x18|0x1A}}|Player Digging|pre=unchanged}}
 
−
{{PacketList|{{change|0x19|0x1B}}|Entity Action|pre=unchanged}}
 
−
{{PacketList|{{change|0x1A|0x1C}}|Steer Vehicle|pre=unchanged}}
 
−
{{PacketList|{{change|0x1B|0x1D}}|Recipe Book Data}}
 
−
{{PacketList|{{change|0x1C|0x1E}}|Name Item|pre=unchanged}}
 
−
{{PacketList|{{change|0x1D|0x1F}}|Resource Pack Status|pre=unchanged}}
 
−
{{PacketList|{{change|0x1E|0x20}}|Advancement Tab|pre=unchanged}}
 
−
{{PacketList|{{change|0x1F|0x21}}|Select Trade|pre=unchanged}}
 
−
{{PacketList|{{change|0x20|0x22}}|Set Beacon Effect|pre=unchanged}}
 
−
{{PacketList|{{change|0x21|0x23}}|Held Item Change (serverbound)|pre=unchanged}}
 
−
{{PacketList|{{change|0x22|0x24}}|Update Command Block|pre=unchanged}}
 
−
{{PacketList|{{change|0x23|0x25}}|Update Command Block Minecart|pre=unchanged}}
 
−
{{PacketList|{{change|0x24|0x26}}|Creative Inventory Action|pre=unchanged}}
 
−
{{PacketList|0x27|Update Jigsaw Block|rel=added}}
 
−
{{PacketList|{{change|0x25|0x28}}|Update Structure Block|pre=unchanged}}
 
−
{{PacketList|{{change|0x26|0x29}}|Update Sign|pre=unchanged}}
 
−
{{PacketList|{{change|0x27|0x2A}}|Animation (serverbound)|pre=unchanged}}
 
−
{{PacketList|{{change|0x28|0x2B}}|Spectate|pre=unchanged}}
 
−
{{PacketList|{{change|0x29|0x2C}}|Player Block Placement}}
 
−
{{PacketList|{{change|0x2A|0x2D}}|Use Item|pre=unchanged}}
 
 
  |}
 
  |}
  
Line 396: Line 218:
 
== Entity Metadata ==
 
== Entity Metadata ==
  
−
{{Warning2|Entity metadata shifted in 19w08a; not all entities are copied here.  All subclasses of entity had shift of 1; all subclasses of living had a second shift (2 total).  All entities listed in the article have been updated, but there are ones not listed here. }}
+
{{#vardefine: meta_prerelease | 1}}
  
−
=== Entity Metadata Format ===
+
{{Metadata type definition/begin}}
−
 
+
  ! Value
−
Note that entity metadata is a totally distinct concept from block metadata.  It is not required to send all metadata fields, or even any metadata fields, so long as the terminating entry is correctly sent.
 
−
 
 
−
Entity Metadata is an array of entries, each of which looks like the following:
 
−
 
 
−
{| class="wikitable"
 
−
! Name
 
−
! Type
 
−
! Meaning
 
−
|-
 
−
| Index
 
−
| Unsigned Byte
 
−
| Unique index key determining the meaning of the following value, see the table below. If this is <code>0xff</code> then the it is the end of the Entity Metadata array and no more is read.
 
−
|-
 
−
| Type
 
−
| Optional VarInt 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}}
−
  | 1
+
  | {{Type|VarInt}}
−
| VarInt
 
 
  |
 
  |
−
|-
+
{{Metadata type definition|VarLong}}
−
  | 2
+
  | {{Type|VarLong}}
−
| Float
 
 
  |
 
  |
−
|-
+
{{Metadata type definition|Float}}
−
  | 3
+
  | {{Type|Float}}
−
| String
 
 
  |
 
  |
−
|-
+
{{Metadata type definition|String}}
−
  | 4
+
  | {{Type|String}}
−
| [[Chat]]
 
 
  |
 
  |
−
|-
+
{{Metadata type definition|Text Component}}
−
| 5
+
  | {{Type|Text Component}}
−
| OptChat (Boolean + Optional [[Chat]])
 
−
  | [[Chat]] is present if the Boolean is set to true
 
−
|-
 
−
| 6
 
−
| [[Slot]]
 
 
  |
 
  |
−
  |-
+
{{Metadata type definition|Optional Text Component}}
−
  | 7
+
  | ({{Type|Boolean}}, {{Type|Optional}} {{Type|Text Component}})
−
  | Boolean
+
  | Text Component is present if the Boolean is set to true.
 +
{{Metadata type definition|Slot}}
 +
  | {{Type|Slot}}
 
  |
 
  |
−
|-
+
{{Metadata type definition|Boolean}}
−
| 8
+
  | {{Type|Boolean}}
−
| Rotation
 
−
| 3 floats: rotation on x, rotation on y, rotation on z
 
−
|-
 
−
| 9
 
−
  | [[Data Types#Position|Position]]
 
 
  |
 
  |
−
|-
+
{{Metadata type definition|Rotations}}
−
| 10
+
  | ({{Type|Float}}, {{Type|Float}}, {{Type|Float}})
−
  | OptPosition (Boolean + Optional Position)
+
  | rotation on x, rotation on y, rotation on z
−
| Position is present if the Boolean is set to true
+
{{Metadata type definition|Position}}
−
|-
+
  | {{Type|Position}}
−
| 11
 
−
| Direction (VarInt)
 
−
  | (Down = 0, Up = 1, North = 2, South = 3, West = 4, East = 5)
 
−
|-
 
−
  | 12
 
−
| OptUUID (Boolean + Optional UUID)
 
−
| UUID is present if the Boolean is set to true
 
−
|-
 
−
| 13
 
−
| OptBlockID (VarInt)
 
−
| 0 for absent otherwise, <code><nowiki>id &lt;&lt; 4 | data</nowiki></code>
 
−
|-
 
−
| 14
 
−
| [[NBT]]
 
 
  |
 
  |
−
  |-
+
{{Metadata type definition|Optional Position}}
−
  | 15
+
| ({{Type|Boolean}}, {{Type|Optional}} {{Type|Position}})
−
  | [[Data Types#Particle|Particle]]
+
| 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}}
 
  |
 
  |
−
  |- {{Added}}
+
{{Metadata type definition|Particle}}
−
  | 16
+
| ({{Type|VarInt}}, Varies)
−
  | Villager Data
+
  | particle type (an ID in the <code>minecraft:particle_type</code> registry), particle data (See [[Particles]].)
−
  | 3 VarInts: villager type, villager profession, level
+
{{Metadata type definition|Particles|rel=added}}
−
|- {{Added}}
+
  | ({{Type|VarInt}}, Array of Particle)
−
  | 17
+
  | length of array, particle data (See directly above.)
−
| OptVarInt
+
{{Metadata type definition|Villager Data}}
−
  | 0 for absent; 1 + actual value otherwise. Used for entity IDs.
+
| ({{Type|VarInt}}, {{Type|VarInt}}, {{Type|VarInt}})
−
|- {{Added}}
+
  | villager type, villager profession, level (See below.)
−
  | 18
+
{{Metadata type definition|Optional VarInt}}
−
| Pose
+
  | {{Type|VarInt}}
−
  | A VarInt enum: 0: STANDING, 1: FALL_FLYING, 2: SLEEPING, 3: SWIMMING, 4: SPIN_ATTACK, 5: SNEAKING, 6: DYING
+
  | 0 for absent; 1 + actual value otherwise. Used for entity IDs.
−
|}
+
{{Metadata type definition|Pose}}
−
 
+
  | {{Type|VarInt}} {{Type|Enum}}
−
Villager type (<code>minecraft:villager_type</code> registry):
+
  | 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}}
−
{| class="wikitable"
+
  | {{Type|VarInt}}
−
! Name !! ID
+
  | An ID in the <code>minecraft:cat_variant</code> registry.
−
  |-
+
{{Metadata type definition|Wolf Variant|rel=added}}
−
  | <code>minecraft:desert</code> || 0
+
  | {{Type|VarInt}}
−
|-
+
  | An ID in the <code>minecraft:wolf_variant</code> registry.
−
| <code>minecraft:jungle</code> || 1
+
{{Metadata type definition|Frog Variant}}
−
  |-
+
  | {{Type|VarInt}}
−
| <code>minecraft:plains</code> || 2
+
  | An ID in the <code>minecraft:frog_variant</code> registry.
−
|-
+
{{Metadata type definition|Optional Global Position}}
−
  | <code>minecraft:savanna</code> || 3
+
  | ({{Type|Boolean}}, {{Type|Optional}} {{Type|Identifier}}, {{Type|Optional}} {{Type|Position}})
−
|-
+
  | dimension identifier, position; only if the Boolean is set to true.
−
  | <code>minecraft:snow</code> || 4
+
{{Metadata type definition|Painting Variant}}
−
|-
+
  | {{Type|VarInt}}
−
  | <code>minecraft:swamp</code> || 5
+
  | An ID in the <code>minecraft:painting_variant</code> registry.
−
|-
+
{{Metadata type definition|Sniffer State}}
−
  | <code>minecraft:taiga</code> || 6
+
  | {{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}}
−
Villager professions (<code>minecraft:villager_profession</code> registry):
+
  | {{Type|VarInt}} {{Type|Enum}}
−
 
+
  | IDLE = 0, ROLLING = 1, SCARED = 2
−
{| class="wikitable"
+
{{Metadata type definition|Vector3}}
−
! Name !! ID
+
  | ({{Type|Float}}, {{Type|Float}}, {{Type|Float}})
−
|-
+
  | x, y, z
−
  | <code>minecraft:none</code> || 0
+
{{Metadata type definition|Quaternion}}
−
|-
+
  | ({{Type|Float}}, {{Type|Float}}, {{Type|Float}}, {{Type|Float}})
−
  | <code>minecraft:armorer</code> || 1
+
  | x, y, z, w
−
|-
 
−
  | <code>minecraft:butcher</code> || 2
 
−
|-
 
−
  | <code>minecraft:cartographer</code> || 3
 
−
  |-
 
−
| <code>minecraft:cleric</code> || 4
 
−
|-
 
−
| <code>minecraft:farmer</code> || 5
 
−
|-
 
−
| <code>minecraft:fisherman</code> || 6
 
−
|-
 
−
| <code>minecraft:fletcher</code> || 7
 
−
  |-
 
−
| <code>minecraft:leatherworker</code> || 8
 
−
  |-
 
−
| <code>minecraft:librarian</code> || 9
 
−
  |-
 
−
| <code>minecraft:mason</code> || 10
 
−
  |-
 
−
| <code>minecraft:nitwit</code> || 11
 
−
  |-
 
−
| <code>minecraft:shepherd</code> || 12
 
−
|-
 
−
  | <code>minecraft:toolsmith</code> || 13
 
−
|-
 
−
| <code>minecraft:weaponsmith</code> || 14
 
 
  |}
 
  |}
  
−
=== Mobs ===
+
=== Living Entity ===
  
−
Entity IDs have shifted with the addition of some new mobs.
+
TODO: This has changed to use the PARTICLES attribute
  
−
=== Entity ===
+
=== Wolf ===
  
−
The base class.
+
{{Metadata inherit|Wolf|inherits=Tameable Animal}}
  
 
{| class="wikitable"
 
{| class="wikitable"
Line 573: Line 331:
 
  !style="width: 250px;" colspan="2"| Meaning
 
  !style="width: 250px;" colspan="2"| Meaning
 
  ! Default
 
  ! Default
 +
|- {{added}}
 +
| {{Metadata id|}}
 +
| {{Metadata type|Wolf Variant}}
 +
|colspan="2"| Wolf Variant
 +
| PALE
 
  |-
 
  |-
−
  |rowspan="9"| 0
+
  | {{Metadata id|}}
−
|rowspan="9"| Byte
+
  | {{Metadata type|Boolean}}
−
! Bit mask
+
  |colspan="2"| Is begging
−
! Meaning
 
−
|rowspan="9"| 0
 
−
|-
 
−
| 0x01
 
−
| On Fire
 
−
|-
 
−
| 0x02
 
−
| Crouched
 
−
|-
 
−
| 0x04
 
−
| Unused (previously riding)
 
−
|-
 
−
| 0x08
 
−
| Sprinting
 
−
|-
 
−
| 0x10
 
−
| Swimming
 
−
|-
 
−
| 0x20
 
−
| Invisible
 
−
|-
 
−
| 0x40
 
−
| Glowing effect
 
−
|-
 
−
| 0x80
 
−
| Flying with {{Minecraft Wiki|elytra}}
 
−
  |-
 
−
| 1
 
−
| VarInt
 
−
|colspan="2"| Air
 
−
| 300
 
−
|-
 
−
| 2
 
−
| OptChat
 
−
|colspan="2"| Custom name
 
−
| empty
 
−
|-
 
−
| 3
 
−
| Boolean
 
−
  |colspan="2"| Is custom name visible
 
 
  | false
 
  | false
 
  |-
 
  |-
−
  | 4
+
  | {{Metadata id|}}
−
  | Boolean
+
  | {{Metadata type|VarInt}}
−
  |colspan="2"| Is silent
+
  |colspan="2"| Collar color (values are those {{Minecraft Wiki|Data_values#Dyes|used with dyes}})
−
  | false
+
  | 14 (Red)
 
  |-
 
  |-
−
  | 5
+
  | {{Metadata id|}}
−
| Boolean
+
  | {{Metadata type|VarInt}}
−
  |colspan="2"| No gravity
+
  |colspan="2"| Anger time
−
| false
+
  | 0
−
|- {{Added}}
 
−
| 6
 
−
| Pose
 
−
  |colspan="2"| Pose
 
−
  | STANDING
 
 
  |}
 
  |}
  
−
=== Itemed Throwable ===
+
=== Armadillo ===
−
 
 
−
Extends [[#Throwable|Throwable]].
 
−
 
 
−
Used for all things that previously extended throwable other than potions, which already had an item.
 
  
 +
{{Metadata inherit|Armadillo|inherits=Animal|start_at=17}}
 
{| class="wikitable" {{added}}
 
{| class="wikitable" {{added}}
 
  ! Index
 
  ! Index
Line 647: Line 362:
 
  ! Default
 
  ! Default
 
  |-
 
  |-
−
  | 7
+
  | {{Metadata id|added}}
−
  | Slot
+
  | {{Metadata type|Armadillo State}}
−
  |colspan="2"| Item
+
  |colspan="2"| Armadillo State
−
  | empty (which behaves as if it were a specific item, depending on the subclass)
+
  | IDLE
 
  |}
 
  |}
  
−
=== Egg ===
+
== Block Actions ==
  
−
Extends [[#Itemed_Throwable|Itemed Throwable]].
+
No changes so far.
  
−
No additional metadata.
+
== Inventories ==
  
−
An empty item behaves as if the item were a <code>minecraft:egg</code>.
+
No changes so far.
  
−
=== Ender Pearl ===
+
== Plugin Channels ==
  
−
Extends [[#Itemed_Throwable|Itemed Throwable]].
+
No changes so far.
  
−
No additional metadata.
+
== Handshake ==
  
−
An empty item behaves as if the item were a <code>minecraft:ender_pearl</code>.
+
=== Serverbound ===
  
−
=== Experience Bottle ===
+
==== Handshake ====
  
−
Extends [[#Itemed_Throwable|Itemed Throwable]].
+
This causes the server to switch into the target state.
−
 
 
−
No additional metadata.
 
−
 
 
−
<code>minecraft:experience_bottle</code>
 
−
 
 
−
=== Snowball ===
 
−
 
 
−
Extends [[#Itemed_Throwable|Itemed Throwable]].
 
−
 
 
−
No additional metadata.
 
−
 
 
−
<code>minecraft:snowball</code>
 
−
 
 
−
=== Eye of Ender ===
 
−
 
 
−
Extends [[#Entity|Entity]].
 
−
 
 
−
{| class="wikitable" {{added}}
 
−
! Index
 
−
! Type
 
−
!style="width: 250px;" colspan="2"| Meaning
 
−
! Default
 
−
|-
 
−
| 7
 
−
| Slot
 
−
|colspan="2"| Item
 
−
| empty (which behaves as if it were a <code>minecraft:ender_eye</code>)
 
−
|}
 
−
 
 
−
=== Arrow ===
 
−
 
 
−
Extends [[#Entity|Entity]].
 
−
 
 
−
Abstract base class for [[#TippedArrow|TippedArrow]] (which is used for regular arrows as well as tipped ones) and Spectral Arrow.
 
  
 
{| class="wikitable"
 
{| class="wikitable"
−
  ! Index
+
  ! Packet ID
−
  ! Type
+
  ! State
−
  !style="width: 250px;" colspan="2"| Meaning
+
! Bound To
−
  ! Default
+
! Field Name
 +
  ! Field Type
 +
  ! Notes
 
  |-
 
  |-
−
  | rowspan="3" | {{change|6|7}}
+
  | rowspan="4"| 0x00
−
  | rowspan="3" | Byte
+
| rowspan="4"| Handshaking
−
  ! Bit mask
+
  | rowspan="4"| Server
−
  ! Meaning
+
  | Protocol Version
−
  | rowspan="3" | 0
+
  | [[#Definitions:varint|VarInt]]
 +
  | See [[protocol version numbers]] (currently 765 in Minecraft 1.20.4).
 
  |-
 
  |-
−
  | 0x01
+
  | Server Address
−
  | Is critical
+
  | [[#Definitions:string|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.
 
  |-
 
  |-
−
  | 0x02
+
  | Server Port
−
  | Is noclip (used by loyalty tridents when returning)
+
  | [[#Definitions:unsigned-short|Unsigned Short]]
 +
| Default is 25565. The Notchian server does not use this information.
 
  |-
 
  |-
−
  | {{change|7|8}}
+
  | Next State
−
  | OptUUID
+
  | [[#Definitions:varint|VarInt]] [[#Definitions:enum|Enum]]
−
|colspan="2"| Shooter UUID
+
  | 1 for [[#Status|Status]], 2 for [[#Login|Login]]{{change||, 3 for [[#Login|Transfer]]}}.
−
  | Empty
 
−
|- {{added}}
 
−
| 9
 
−
| Byte
 
−
|colspan="2"| Piercing level
 
−
| 0
 
 
  |}
 
  |}
  
−
=== TippedArrow ===
+
== Status ==
  
−
Extends [[#Arrow|Arrow]].
+
=== Clientbound ===
  
−
Used for both tipped and regular arrows.  If not tipped, then color is set to -1 and no tipped arrow particles are used.
+
No changes so far.
  
−
{| class="wikitable"
+
=== Serverbound ===
−
! Index
 
−
! Type
 
−
!style="width: 250px;" colspan="2"| Meaning
 
−
! Default
 
−
|-
 
−
| {{change|8|10}}
 
−
| VarInt
 
−
|colspan="2"| Color (-1 for no particles)
 
−
| -1
 
−
|}
 
  
−
=== Trident ===
+
No changes so far.
  
−
Extends [[#Arrow|Arrow]].
+
== Login ==
  
−
{| class="wikitable"
+
=== Clientbound ===
−
! Index
 
−
! Type
 
−
!style="width: 250px;" colspan="2"| Meaning
 
−
! Default
 
−
|-
 
−
| {{change|8|10}}
 
−
| VarInt
 
−
|colspan="2"| Loyalty level (enchantment)
 
−
| 0
 
−
|}
 
−
 
 
−
=== Itemed Fireball ===
 
−
 
 
−
Extends [[#Entity|Entity]].
 
  
−
Used for regular and small fireballs.  Not used for dragon fireballs and wither skulls.  Interestingly, regular fireballs do not come from an item.
+
==== Encryption Request ====
−
 
 
−
{| class="wikitable" {{added}}
 
−
! Index
 
−
! Type
 
−
!style="width: 250px;" colspan="2"| Meaning
 
−
! Default
 
−
|-
 
−
| 7
 
−
| Slot
 
−
|colspan="2"| Item
 
−
| empty (which behaves as if it were a <code>minecraft:fire_charge</code>)
 
−
|}
 
−
 
 
−
=== Fireball ===
 
−
 
 
−
Extends {{change|[[#Abstract Fireball|Abstract Fireball]]|[[#Itemed Fireball|Itemed Fireball]]}}.  This is the large fireball shot by ghasts.
 
−
 
 
−
No additional metadata.
 
−
 
 
−
=== Small Fireball ===
 
−
 
 
−
Extends {{change|[[#Abstract Fireball|Abstract Fireball]]|[[#Itemed Fireball|Itemed Fireball]]}}.  This is the fireball shot by blazes and dispensers with fire charges.
 
−
 
 
−
No additional metadata.
 
−
 
 
−
=== Fireworks ===
 
−
 
 
−
Extends [[#Entity|Entity]].
 
  
 
{| class="wikitable"
 
{| class="wikitable"
−
  ! Index
+
  ! Packet ID
−
  ! Type
+
  ! State
−
  !style="width: 250px;" colspan="2"| Meaning
+
  ! Bound To
−
  ! Default
+
  ! Field Name
−
|-
+
  ! Field Type
−
| {{change|6|7}}
+
  ! Notes
−
| [[Slot]]
 
−
|colspan="2"| Firework info
 
−
| empty
 
−
|-
 
−
| {{change|7|8}}
 
−
| {{Change|VarInt|OptVarInt}}
 
−
|colspan="2"| Entity ID of entity which used firework (for elytra boosting)
 
−
| 0
 
−
|- {{Added}}
 
−
| 9
 
−
| Boolean
 
−
|colspan="2"| Shot at angle (from a crossbow)
 
−
| false
 
−
|}
 
−
 
 
−
=== Living ===
 
−
 
 
−
Extends [[#Entity|Entity]].
 
−
 
 
−
{| class="wikitable"
 
−
! Index
 
−
  ! Type
 
−
  !style="width: 250px;" colspan="2"| Meaning
 
−
! Default
 
 
  |-
 
  |-
−
  |rowspan="5"| {{change|6|7}}
+
  | rowspan="6"| 0x01
−
  |rowspan="5"| Byte
+
  | rowspan="6"| Login
−
  |colspan="2"| Hand states, used to trigger blocking/eating/drinking animation.
+
  | rowspan="6"| Client
−
  |rowspan="5"| 0
+
| Server ID
 +
  | {{Type|String}} (20)
 +
| Appears to be empty.
 
  |-
 
  |-
−
  ! Bit mask
+
  | Public Key Length
−
  ! Meaning
+
  | {{Type|VarInt}}
 +
| Length of Public Key.
 
  |-
 
  |-
−
  | 0x01
+
  | Public Key
−
  | Is hand active
+
  | {{Type|Byte Array}}
 +
| The server's public key, in bytes.
 
  |-
 
  |-
−
  | 0x02
+
  | Verify Token Length
−
  | Active hand (0 = main hand, 1 = offhand)
+
  | {{Type|VarInt}}
 +
| Length of Verify Token. Always 4 for Notchian servers.
 
  |-
 
  |-
−
  | 0x04
+
  | Verify Token
−
| In riptide spin attack
+
  | {{Type|Byte Array}}
−
|-
+
  | A sequence of random bytes generated by the server.
−
| {{change|7|8}}
+
  |- {{added}}
−
| Float
+
  | Should Authenticate
−
|colspan="2"| Health
+
  | {{Type|Boolean}}
−
| 1.0
+
  |  
−
|-
 
−
  | {{change|8|9}}
 
−
  | VarInt
 
−
|colspan="2"| Potion effect color (or 0 if there is no effect)
 
−
| 0
 
−
|-
 
−
| {{change|9|10}}
 
−
| Boolean
 
−
|colspan="2"| Is potion effect ambient: reduces the number of particles generated by potions to 1/5 the normal amount
 
−
| false
 
−
  |-
 
−
| {{change|10|11}}
 
−
  | VarInt
 
−
|colspan="2"| Number of arrows in entity
 
−
  | 0
 
−
|- {{Added}}
 
−
  | 12
 
−
| OptBlockPos
 
−
|colspan="2"| Unknown (Bed location?)
 
−
| Absent
 
 
  |}
 
  |}
  
−
=== Panda ===
+
==== Cookie Request (login) ====
  
−
Extends [[#Animal|Animal]].
+
Requests a cookie that was previously stored.
  
 
{| class="wikitable" {{added}}
 
{| class="wikitable" {{added}}
−
  ! Index
+
  ! Packet ID
−
  ! Type
+
  ! State
−
  !style="width: 250px;" colspan="2"| Meaning
+
  ! Bound To
−
  ! Default
+
  ! colspan="2"| Field Name
−
|-
+
  ! colspan="2"| Field Type
−
| 15
+
  ! Notes
−
| Integer
 
−
|colspan="2"| Breed timer?  Set to 32 when something happens, and then counts down to 0 again.  At 29 and 14 (before counting down), will play the <code>entity.panda.cant_breed</code> sound event.
 
−
| 0
 
−
  |-
 
−
| 16
 
−
| Integer
 
−
|colspan="2"| Sneeze timer.  Counts up from 0; when it hits 1 the <code>entity.panda.pre_sneeze</code> event plays and when it hits 21 the <code>entity.panda.sneeze</code> event plays (and it is set back to 0 and the sneeze flag is cleared).
 
−
| 0
 
−
|-
 
−
| 17
 
−
| Integer
 
−
|colspan="2"| Eat timer.  If nonzero, counts upwards.
 
−
| 0
 
−
|-
 
−
| 18
 
−
| Byte
 
−
|colspan="2"| Main Gene
 
−
| 0
 
−
|-
 
−
| 19
 
−
| Byte
 
−
|colspan="2"| Hidden Gene
 
−
| 0
 
−
|-
 
−
|rowspan="6"| 20
 
−
|rowspan="6"| Byte
 
−
  ! Bit mask
 
−
! Meaning
 
−
|rowspan="6"| 0
 
−
|-
 
−
| 0x01
 
−
| Unused
 
−
|-
 
−
| 0x02
 
−
| Is sneezing
 
 
  |-
 
  |-
−
  | 0x04
+
  | rowspan="1"| 0x05
−
  | Is eating
+
  | rowspan="1"| Login
−
  |-
+
  | rowspan="1"| Client
−
  | 0x08
+
  | colspan="2"| Key
−
| Unknown
+
  | colspan="2"| Identifier
−
  |-
+
  | The identifier of the cookie.
−
| 0x10
 
−
  | Unknown
 
 
  |}
 
  |}
  
−
=== Fox ===
+
=== Serverbound ===
  
−
Extends [[#Animal|Animal]].
+
==== Cookie Response (login) ====
  
−
{| class="wikitable" {{added}}
+
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.
−
! Index
 
−
! Type
 
−
!style="width: 250px;" colspan="2"| Meaning
 
−
! Default
 
−
|-
 
−
| 15
 
−
| VarInt
 
−
| colspan="2" | Type (0: red, 1: snow)
 
−
| 0 (red)
 
−
|-
 
−
| rowspan="9" | 16
 
−
| rowspan="9" | Byte
 
−
! Bit mask
 
−
! Meaning
 
−
| rowspan="9" | 0
 
−
|-
 
−
| 0x01 || Sitting
 
−
|-
 
−
| 0x02 || ''Unused''
 
−
|-
 
−
| 0x04 || Crouching
 
−
|-
 
−
| 0x08 || Unknown
 
−
|-
 
−
| 0x10 || Unknown
 
−
|-
 
−
| 0x20 || Sleeping
 
−
|-
 
−
| 0x40 || Unknown
 
−
|-
 
−
| 0x80 || Unknown
 
−
|-
 
−
| 17
 
−
| OptUUID
 
−
| colspan="2" | First UUID (in <code>UUIDs</code> NBT)?
 
−
| Absent
 
−
|-
 
−
| 18
 
−
| OptUUID
 
−
| colspan="2" | Second UUID (in <code>UUIDs</code> NBT)?
 
−
| Absent
 
−
|}
 
−
 
 
−
=== Mooshroom ===
 
−
 
 
−
Extends [[#Cow|Cow]].
 
−
 
 
−
{{change|No additional metadata.}}
 
  
 
{| class="wikitable" {{added}}
 
{| class="wikitable" {{added}}
−
  ! Index
+
  ! Packet ID
−
  ! Type
+
  ! State
−
  !style="width: 250px;" colspan="2"| Meaning
+
! Bound To
−
  ! Default
+
  ! colspan="2"| Field Name
 +
! colspan="2"| Field Type
 +
  ! Notes
 
  |-
 
  |-
−
  | 15
+
  | rowspan="4"| 0x04
−
| String
+
  | rowspan="4"| Login
−
  | colspan="2"| Variant ("red" or "brown")
+
  | rowspan="4"| Server
−
| red
+
| colspan="2"| Key
−
  |}
+
  | colspan="2"| Identifier
−
 
+
  | The identifier of the cookie.
−
=== Raid Participent ===
 
−
 
 
−
{{change||Extends [[#Monster|Monster]].}}
 
−
 
 
−
{| class="wikitable" {{added}}
 
−
  ! Index
 
−
! Type
 
−
!style="width: 250px;" colspan="2"| Meaning
 
−
  ! Default
 
 
  |-
 
  |-
−
| 14
+
  | colspan="2"| Has Payload
−
| boolean
+
  | colspan="2"| Boolean
−
  | colspan="2"| Is celebrating
+
  | The payload is only present if the cookie exists on the client.
−
  | false
 
−
|}
 
−
 
 
−
"Is celebrating" appears to control the pose for vindicators and does not appear to be used by other types.
 
−
 
 
−
=== Abstract Illager ===
 
−
 
 
−
Extends {{change|[[#Monster|Monster]]|[[#Raid Participent|Raid Participent]]}}.
 
−
 
 
−
{| class="wikitable" {{removed}}
 
−
! Index
 
−
! Type
 
−
!style="width: 250px;" colspan="2"| Meaning
 
−
  ! Default
 
 
  |-
 
  |-
−
  |rowspan="2"| 12
+
  | colspan="2"| Payload Length
−
  |rowspan="2"| Byte
+
  | colspan="2"| VarInt
−
  ! Bit mask
+
  | Length of the following byte array.
−
! Meaning
 
−
|rowspan="2"| 0
 
 
  |-
 
  |-
−
  | 0x01
+
  | colspan="2"| Payload
−
  | Has target (aggressive state)
+
  | colspan="2"| Optional Byte Array (5120)
 +
| The data of the cookie, if any.
 
  |}
 
  |}
  
−
{{Change||Replaced with pose (presumably?)}}
+
== Configuration ==
  
−
=== Spellcaster Illager ===
+
=== Clientbound ===
−
 
 
−
Extends [[#Abstract Illager|Abstract Illlager]].
 
−
 
 
−
{| class="wikitable"
 
−
! Index
 
−
! Type
 
−
!style="width: 250px;" colspan="2"| Meaning
 
−
! Default
 
−
|-
 
−
| {{change|13|15}}
 
−
| Byte
 
−
| colspan="2"| Spell (0: none, 1: summon vex, 2: attack, 3: wololo, 4: disappear, 5: blindness)
 
−
| 0
 
−
|}
 
  
−
=== {{change|EvocationIllager|Evoker}} ===
+
==== Cookie Request (configuration) ====
  
−
Extends [[#Spellcaster Illager|Spellcaster Illager]].
+
Requests a cookie that was previously stored.
−
 
 
−
=== {{change|IllusionIllager|Illusioner}} ===
 
−
 
 
−
Extends [[#Spellcaster Illager|Spellcaster Illager]].
 
−
 
 
−
=== Pillager ===
 
−
 
 
−
Extends [[#Abstract Illager|Abstract Illlager]].
 
  
 
{| class="wikitable" {{added}}
 
{| class="wikitable" {{added}}
−
  ! Index
+
  ! Packet ID
−
  ! Type
+
  ! State
−
  !style="width: 250px;" colspan="2"| Meaning
+
! Bound To
−
  ! Default
+
  ! colspan="2"| Field Name
 +
! colspan="2"| Field Type
 +
  ! Notes
 
  |-
 
  |-
−
  | 15
+
  | rowspan="1"| 0x00
−
  | Boolean
+
| rowspan="1"| Configuration
−
  | colspan="2"| Using crossbow
+
| rowspan="1"| Client
−
  | false
+
  | colspan="2"| Key
 +
  | colspan="2"| Identifier
 +
  | The identifier of the cookie.
 
  |}
 
  |}
  
−
=== {{change|VindicationIllager|Vindicator}} ===
+
==== Reset Chat ====
−
 
 
−
Extends [[#Abstract Illager|Abstract Illager]].
 
−
 
 
−
=== Ravager ===
 
−
 
 
−
Extends [[#Raid Participent|Raid Participent]]
 
−
 
 
−
No additional metadata.
 
  
 
{| class="wikitable" {{added}}
 
{| class="wikitable" {{added}}
−
  ! Status
+
  ! Packet ID
−
  !colspan="2"| Description
+
  ! State
 +
! Bound To
 +
! Field Name
 +
! Field Type
 +
! Notes
 
  |-
 
  |-
−
  | 4
+
  | 0x06
−
  |colspan="2"| Starts the attack animation.
+
  | Configuration
−
|-
+
  | Client
−
  | 39
+
  | colspan="3"| ''no fields''
−
  |colspan="2"| Starts the stun animation.
 
 
  |}
 
  |}
  
−
=== Witch ===
+
==== Registry Data ====
  
−
Extends {{change|[[#Monster|Monster]]|[[#Raid Participent|Raid Participent]]}}.
+
Represents certain registries that are sent from the server and are applied on the client. {{change||The packet is sent for each of the following registries: <code>minecraft:worldgen/biome</code>, <code>minecraft:chat_type</code>, <code>minecraft:trim_pattern</code>, <code>minecraft:trim_material</code>, <code>minecraft:wolf_variant</code>, <code>minecraft:dimension_type</code>, <code>minecraft:damage_type</code>, and <code>minecraft:banner_pattern</code>.}}
  
 
{| class="wikitable"
 
{| class="wikitable"
−
  ! Index
+
  ! Packet ID
−
  ! Type
+
  ! State
−
  !style="width: 250px;" colspan="2"| Meaning
+
! Bound To
−
  ! Default
+
  ! colspan="2"| Field Name
 +
! colspan="2"| Field Type
 +
  ! Notes
 
  |-
 
  |-
−
  | {{change|12|15}}
+
  | rowspan="6"| 0x07
 +
| rowspan="6"| Configuration
 +
| rowspan="6"| Client
 +
|{{removed}} colspan="2"| Registry Codec
 +
|{{removed}} colspan="2"| {{Type|NBT}} (Compound)
 +
|{{removed}}| See [[Registry Data]].
 +
|- {{added}}
 +
| colspan="2"| Registry ID
 +
| colspan="2"| Identifier
 +
|
 +
|- {{added}}
 +
| colspan="2"| Entry Count
 +
| colspan="2"| VarInt
 +
| Number of entries in the following array.
 +
|- {{added}}
 +
| rowspan="3"| Entries
 +
| Entry ID
 +
| rowspan="3"| Array
 +
| Identifier
 +
|
 +
|- {{added}}
 +
| Has Data
 
  | Boolean
 
  | Boolean
−
  |colspan="2"| Is drinking potion
+
  | Whether the entry has any data following.
−
| false
 
−
|}
 
−
 
 
−
=== AbstractSkeleton ===
 
−
 
 
−
Extends [[#Monster|Monster]].
 
−
 
 
−
{| class="wikitable" {{removed}}
 
−
! Index
 
−
! Type
 
−
!style="width: 250px;" colspan="2"| Meaning
 
−
! Default
 
−
|-
 
−
| {{change|12|14}}
 
−
| Boolean
 
−
|colspan="2"| Is swinging arms
 
−
| false
 
−
|}
 
−
 
 
−
{{Change||Replaced with pose (presumably?)}}
 
−
 
 
−
=== Zombie ===
 
−
 
 
−
Extends [[#Monster|Monster]].
 
−
 
 
−
{| class="wikitable"
 
−
! Index
 
−
! Type
 
−
!style="width: 250px;" colspan="2"| Meaning
 
−
! Default
 
−
|-
 
−
| {{change|12|14}}
 
−
| Boolean
 
−
|colspan="2"| Is baby
 
−
| false
 
−
|-
 
−
| {{change|13|15}}
 
−
| VarInt
 
−
|colspan="2"| Unused (previously type)
 
−
| 0
 
−
|- {{removed}}
 
−
| 14
 
−
| Boolean
 
−
|colspan="2"| Are hands held up
 
−
| false
 
−
|-
 
−
| {{change|15|16}}
 
−
| Boolean
 
−
|colspan="2"| Is becoming a drowned
 
−
| false
 
−
|}
 
−
 
 
−
{{Change||Replaced with pose (presumably?)}}
 
−
 
 
−
=== Zombie Villager ===
 
−
 
 
−
Extends [[#Zombie|Zombie]].
 
−
 
 
−
{| class="wikitable"
 
−
! Index
 
−
! Type
 
−
!style="width: 250px;" colspan="2"| Meaning
 
−
! Default
 
−
|-
 
−
| {{change|16|17}}
 
−
| Boolean
 
−
|colspan="2"| Is converting
 
−
| false
 
−
|-
 
−
| {{change|17|18}}
 
−
| {{Change|VarInt|Villager Data}}
 
−
|colspan="2"| {{Change|Profession|Villager Data}}
 
−
| {{change|0|Plains/None/1}}
 
−
|}
 
−
 
 
−
 
 
−
=== Ocelot ===
 
−
 
 
−
Extends {{change|[[#TameableAnimal|TameableAnimal]]|[[#Ageable|Ageable]]}}.
 
−
 
 
−
{| class="wikitable"
 
−
! Index
 
−
! Type
 
−
!style="width: 250px;" colspan="2"| Meaning
 
−
! Default
 
−
|- {{removed}}
 
−
| 15
 
−
| VarInt
 
−
|colspan="2"| Type (0 = untamed, 1 = tuxedo, 2 = tabby, 3 = siamese).  Used to render regardless as to whether it is tamed or not.
 
−
| 0
 
 
  |- {{added}}
 
  |- {{added}}
−
  | 15
+
  | Data
−
  | Boolean
+
  | NBT Tag
−
  |colspan="2"| Is trusting
+
  | Entry data. Only present if Has Data is true.
−
| false
 
−
|}
 
−
 
 
−
{| class="wikitable" {{added}}
 
−
! Status
 
−
!colspan="2"| Description
 
−
|-
 
−
| 40
 
−
|colspan="2"| Spawn smoke particles (trust gaining failed)
 
−
|-
 
−
| 41
 
−
|colspan="2"| Spawn heart particles (trust gaining succeeded)
 
 
  |}
 
  |}
  
−
=== Cat ===
+
==== Store Cookie (configuration) ====
  
−
Extends [[#TameableAnimal|TameableAnimal]].
+
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" {{added}}
 
{| class="wikitable" {{added}}
−
  ! Index
+
  ! Packet ID
−
  ! Type
+
  ! State
−
  !style="width: 250px;" colspan="2"| Meaning
+
! Bound To
−
  ! Default
+
  ! colspan="2"| Field Name
 +
! colspan="2"| Field Type
 +
  ! Notes
 
  |-
 
  |-
−
  | 17
+
  | rowspan="2"| 0x0A
−
  | VarInt
+
  | rowspan="2"| Configuration
−
  |colspan="2"| Type (0 = tabby, 1 = black, 2 = red, 3 = siamese, 4 = british_shorthair, 5 = calico, 6 = persian, 7 = ragdoll, 8 = white, 9 = all_black)
+
| rowspan="2"| Client
−
  | 1
+
  | colspan="2"| Key
 +
| colspan="2"| Identifier
 +
  | The identifier of the cookie.
 
  |-
 
  |-
−
| 18
+
  | colspan="2"| Payload
−
| Boolean
+
  | colspan="2"| ByteArray(5120)
−
  |colspan="2"| Unknown
+
  | The data of the cookie.
−
| false
 
−
|-
 
−
| 19
 
−
| Boolean
 
−
  |colspan="2"| Unknown
 
−
| false
 
−
|-
 
−
| 20
 
−
| VarInt
 
−
|colspan="2"| Collar color (values are those {{Minecraft Wiki|Data_values#Dyes|used with dyes}})
 
−
| 14 (Red)
 
−
  |}
 
−
 
 
−
=== Horse ===
 
−
 
 
−
Extends [[#AbstractHorse|AbstractHorse]].
 
−
 
 
−
{| class="wikitable"
 
−
! Index
 
−
! Type
 
−
!style="width: 250px;" colspan="2"| Meaning
 
−
! Default
 
−
|-
 
−
| {{change|15|17}}
 
−
| VarInt
 
−
|colspan="2"| Variant (Color & Style)
 
−
| 0
 
−
|- {{removed}}
 
−
| 16
 
−
| VarInt
 
−
|colspan="2"| Armor (0: none, 1: iron, 2: gold, 3: diamond)
 
−
| 0 (none)
 
−
|- {{removed}}
 
−
| 17
 
−
| [[Slot]]
 
−
|colspan="2"| Armor Item (Forge only)
 
−
| Empty
 
 
  |}
 
  |}
  
−
{{change||Replaced with [[#Entity Equipment|Entity Equipment]] packet. (Uses chestplate slot)}}
+
==== Transfer (configuration) ====
  
−
=== Trader Llama ===
+
Notifies the client that it should transfer to the given server. Cookies previously stored are preserved between server transfers.
−
 
 
−
Extends [[#Llama|Llama]].
 
−
 
 
−
No additional metadata.
 
−
 
 
−
=== Abstract Merchant ===
 
−
 
 
−
Extends [[#Ageable|Ageable]].
 
  
 
{| class="wikitable" {{added}}
 
{| class="wikitable" {{added}}
−
  ! Index
+
  ! Packet ID
−
  ! Type
+
  ! State
−
  !style="width: 250px;" colspan="2"| Meaning
+
! Bound To
−
  ! Default
+
  ! colspan="2"| Field Name
 +
! colspan="2"| Field Type
 +
  ! Notes
 
  |-
 
  |-
−
  | 15
+
  | rowspan="2"| 0x0B
−
| VarInt
+
  | rowspan="2"| Configuration
−
  |colspan="2"| Head shake timer (starts at 40, decrements each tick)
+
  | rowspan="2"| Client
−
  | 0
+
| colspan="2"| Host
−
|}
+
  | colspan="2"| String
−
 
+
  | The hostname of IP of the server.
−
=== Villager ===
 
−
 
 
−
Extends {{change|[[#Ageable|Ageable]]|[[#Abstract Merchant|Abstract Merchant]]}}.
 
−
 
 
−
{| class="wikitable"
 
−
  ! Index
 
−
! Type
 
−
!style="width: 250px;" colspan="2"| Meaning
 
−
  ! Default
 
 
  |-
 
  |-
−
  | {{change|13|16}}
+
  | colspan="2"| Port
−
| {{change|VarInt|Villager Data}}
+
  | colspan="2"| VarInt
−
  |colspan="2"| {{Change|Profession (Farmer = 0, Librarian = 1, Priest = 2, Blacksmith = 3, Butcher = 4, Nitwit = 5)|Villager Data}}
+
  | The port of the server.
−
  | {{change|0|Plains/None/1}}
 
 
  |}
 
  |}
  
−
=== Wandering Trader ===
+
==== Clientbound Known Packs ====
−
 
 
−
Extends [[#Abstract Merchant|Abstract Merchant]].
 
−
 
 
−
No additional metadata.
 
−
 
 
−
== Block Actions ==
 
−
 
 
−
No changes so far.
 
−
 
 
−
== Inventories ==
 
−
 
 
−
{{Need Info|Most of the new inventories have buttons, which are ''probably'' implemented using [[#Click Window Button]].  This needs to be confirmed and the button IDs should be checked.}}
 
−
 
 
−
=== Blast Furnace ===
 
−
[[File:1.14-blast_furnace-slots.png|thumb|Blast Furnace slots]]
 
−
 
 
−
The GUI that appears when a blast furnace is opened.  Same layout as a furnace; however, the recipe book displays blast furnace recipes instead of regular furnace recipes.
 
−
 
 
 
{| class="wikitable" {{added}}
 
{| class="wikitable" {{added}}
 +
! Packet ID
 +
! State
 +
! Bound To
 +
! colspan="2"| Field Name
 +
! colspan="2"| Field Type
 +
! Notes
 
  |-
 
  |-
−
  ! Slot range
+
  | rowspan="4"| 0x0E
−
  ! Description
+
  | rowspan="4"| Configuration
 +
| rowspan="4"| Client
 +
| colspan="2"| Known Pack Count
 +
| colspan="2"| VarInt
 +
| The number of known packs in the following array.
 
  |-
 
  |-
−
  | 0
+
  | rowspan="3"| Known Packs
−
  | ingredient
+
| Namespace
 +
| rowspan="3"| Array
 +
| String
 +
  |
 
  |-
 
  |-
−
  | 1
+
  | ID
−
  | fuel
+
| String
 +
  |
 
  |-
 
  |-
−
  | 2
+
  | Version
−
  | output
+
  | String
−
  |-
+
  |
−
| 3–29
 
−
| main inventory
 
−
|-
 
−
| 30–38
 
−
| hotbar
 
 
  |}
 
  |}
  
−
{{-}}
+
=== Serverbound ===
  
−
=== Smoker ===
+
==== Cookie Response (configuration) ====
−
[[File:1.14-smoker-slots.png|thumb|Smoker slots]]
 
  
−
The GUI that appears when a smoker is opened. Same layout as a furnace; however, the recipe book displays blast furnace recipes instead of regular furnace recipes.
+
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" {{added}}
 
{| class="wikitable" {{added}}
 +
! Packet ID
 +
! State
 +
! Bound To
 +
! colspan="2"| Field Name
 +
! colspan="2"| Field Type
 +
! Notes
 
  |-
 
  |-
−
  ! Slot range
+
  | rowspan="4"| 0x01
−
  ! Description
+
  | rowspan="4"| Configuration
 +
| rowspan="4"| Server
 +
| colspan="2"| Key
 +
| colspan="2"| Identifier
 +
| The identifier of the cookie.
 
  |-
 
  |-
−
  | 0
+
  | colspan="2"| Has Payload
−
  | ingredient
+
| colspan="2"| Boolean
 +
  | The payload is only present if the cookie exists on the client.
 
  |-
 
  |-
−
  | 1
+
  | colspan="2"| Payload Length
−
  | fuel
+
| colspan="2"| VarInt
 +
  | Length of the following byte array.
 
  |-
 
  |-
−
  | 2
+
  | colspan="2"| Payload
−
| output
+
  | colspan="2"| Optional Byte Array (5120)
−
  |-
+
  | The data of the cookie, if any.
−
| 3–29
 
−
| main inventory
 
−
|-
 
−
| 30–38
 
−
  | hotbar
 
 
  |}
 
  |}
  
−
{{-}}
+
==== Serverbound Known Packs ====
  
−
=== Cartography Table ===
+
ID 0x07, same structure as Clientbound Known Packs. If the client specifies a pack in this packet, the server should omit its contained data from Registry Data.
−
[[File:1.14-cartography-slots.png|thumb|Cartography table slots]]
 
  
−
The GUI that appears when a cartography table is opened.
+
== Play ==
  
−
{| class="wikitable" {{added}}
+
=== Clientbound ===
−
|-
 
−
! Slot range
 
−
! Description
 
−
|-
 
−
| 0
 
−
| map
 
−
|-
 
−
| 1
 
−
| paper
 
−
|-
 
−
| 2
 
−
| output
 
−
|-
 
−
| 3–29
 
−
| main inventory
 
−
|-
 
−
| 30–38
 
−
| hotbar
 
−
|}
 
  
−
{{-}}
+
==== Cookie Request (play) ====
  
−
=== Grindstone ===
+
Requests a cookie that was previously stored.
−
[[File:1.14-grindstone-slots.png|thumb|Grindstone slots]]
 
  
 
{| class="wikitable" {{added}}
 
{| class="wikitable" {{added}}
 +
! Packet ID
 +
! State
 +
! Bound To
 +
! colspan="2"| Field Name
 +
! colspan="2"| Field Type
 +
! Notes
 
  |-
 
  |-
−
! Slot range
+
  | rowspan="1"| 0x16
−
! Description
+
  | rowspan="1"| Play
−
  |-
+
  | rowspan="1"| Client
−
| 0
+
  | colspan="2"| Key
−
  | first item
+
  | colspan="2"| Identifier
−
|-
+
  | The identifier of the cookie.
−
  | 1
 
−
| second item
 
−
|-
 
−
  | 2
 
−
| result
 
−
  |-
 
−
| 3–29
 
−
| main inventory
 
−
|-
 
−
| 30–38
 
−
  | hotbar
 
 
  |}
 
  |}
  
−
{{-}}
+
==== Debug Sample ====
−
 
 
−
=== Lectern ===
 
−
[[File:1.14-lectern.png|thumb|Lectern UI]]
 
−
 
 
−
This is a regular container, unlike with held books opened via [[#Open Book]].
 
−
 
 
−
{{Need Info|Is the player inventory also included on this?}}
 
−
 
 
  
 
{| class="wikitable" {{added}}
 
{| class="wikitable" {{added}}
 +
! Packet ID
 +
! State
 +
! Bound To
 +
! Field Name
 +
! Field Type
 +
! Notes
 
  |-
 
  |-
−
  ! Slot range
+
  | rowspan="3"| 0x1B
−
  ! Description
+
  | rowspan="3"| Play
 +
| rowspan="3"| Client
 +
| Sample Length
 +
| VarInt
 +
| The length of the following array.
 
  |-
 
  |-
−
  | 0
+
  | Sample
−
  | book
+
  | Long Array
 +
| TODO: What is the structure of the data in this array?
 
  |-
 
  |-
−
  | 1–27
+
  | Sample Type
−
  | main inventory?
+
  | VarInt Enum
−
  |-
+
  | The type of sample data. Currently always 0 (TICK_TIME).
−
| 28–36
 
−
| hotbar?
 
 
  |}
 
  |}
  
−
{{-}}
+
==== Login (play) ====
−
 
 
−
=== Loom ===
 
−
[[File:1.14-loom-slots.png|thumb|Loom slots]]
 
−
 
 
−
{| class="wikitable" {{added}}
 
−
|-
 
−
! Slot range
 
−
! Description
 
−
|-
 
−
| 0
 
−
| banner
 
−
|-
 
−
| 1
 
−
| dye
 
−
|-
 
−
| 2
 
−
| pattern
 
−
|-
 
−
| 3
 
−
| result
 
−
|-
 
−
| 4–30
 
−
| main inventory
 
−
|-
 
−
| 31–39
 
−
| hotbar
 
−
|}
 
−
 
 
−
{{-}}
 
−
 
 
−
=== Stonecutter ===
 
−
[[File:1.14-stonecutter-slots.png|thumb|Stonecutter slots]]
 
−
 
 
−
{| class="wikitable" {{added}}
 
−
|-
 
−
! Slot range
 
−
! Description
 
−
|-
 
−
| 0
 
−
| input
 
−
|-
 
−
| 1
 
−
| result
 
−
|-
 
−
| 2–28
 
−
| main inventory
 
−
|-
 
−
| 29–37
 
−
| hotbar
 
−
|}
 
−
 
 
−
{{-}}
 
−
 
 
−
== Plugin Channels ==
 
−
 
 
−
=== <code>minecraft:book_open</code> ===
 
−
{{change|''Server to client''}}
 
−
 
 
−
{{change|When a player right clicks with a signed book. This tells the client to open the book GUI.}}
 
−
 
 
−
{{change|The payload is a VarInt enum for the selected hand: 0 for the main hand, 1 for the offhand.}}
 
−
 
 
−
{{change||Replaced with [[#Open Book|Open Book]] packet.}}
 
−
 
 
−
=== <code>minecraft:trader_list</code> ===
 
−
{{change|''Server to client''}}
 
−
 
 
−
{{change|The list of trades a villager NPC is offering.}}
 
−
 
 
−
{{change||Replaced with [[#Trade List|Trade List]] packet.}}
 
−
 
 
−
=== <code>minecraft:debug/poi_ticket_count</code> ===
 
−
{{Need Info|Unknown channel}}
 
−
=== <code>minecraft:debug/poi_added</code> ===
 
−
{{Need Info|Unknown channel}}
 
−
=== <code>minecraft:debug/poi_removed</code> ===
 
−
{{Need Info|Unknown channel}}
 
−
=== <code>minecraft:debug/village_sections</code> ===
 
−
{{Need Info|Unknown channel}}
 
−
=== <code>minecraft:debug/goal_selector</code> ===
 
−
{{Need Info|Unknown channel}}
 
−
=== <code>minecraft:debug/brain</code> ===
 
−
{{Need Info|Unknown channel}}
 
−
 
 
−
== Play ==
 
−
 
 
−
=== Clientbound ===
 
−
 
 
−
==== Spawn Object ====
 
−
 
 
−
Sent by the server when a vehicle or other object is created.
 
  
 
{| class="wikitable"
 
{| class="wikitable"
Line 1,569: Line 781:
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
−
  |rowspan="12"| 0x00
+
  | rowspan="22"| 0x2B
−
  |rowspan="12"| Play
+
  | rowspan="22"| Play
−
  |rowspan="12"| Client
+
  | rowspan="22"| Client
 
  | Entity ID
 
  | Entity ID
−
  | VarInt
+
  | {{Type|Int}}
−
  | EID of the object
+
| The player's Entity ID (EID).
 +
|-
 +
| Is hardcore
 +
| {{Type|Boolean}}
 +
|
 +
|-
 +
| Dimension Count
 +
| {{Type|VarInt}}
 +
  | Size of the following array.
 
  |-
 
  |-
−
  | Object UUID
+
  | Dimension Names
−
  | UUID
+
  | {{Type|Array}} of {{Type|Identifier}}
−
  |  
+
  | Identifiers for all dimensions on the server.
 
  |-
 
  |-
−
  | Type
+
  | Max Players
−
  | {{change|Byte|VarInt}}
+
  | {{Type|VarInt}}
−
  | The type of object. {{change|(see [[Entities#Objects]])|Uses the same entity type IDs as in Spawn Mob}}
+
  | Was once used by the client to draw the player list, but now is ignored.
 
  |-
 
  |-
−
  | X
+
  | View Distance
−
  | Double
+
  | {{Type|VarInt}}
−
  |  
+
| Render distance (2-32).
 +
|-
 +
| Simulation Distance
 +
| {{Type|VarInt}}
 +
  | The distance that the client will process specific things, such as entities.
 
  |-
 
  |-
−
  | Y
+
  | Reduced Debug Info
−
  | Double
+
  | {{Type|Boolean}}
−
  |  
+
  | If true, a Notchian client shows reduced information on the {{Minecraft Wiki|debug screen}}.  For servers in development, this should almost always be false.
 
  |-
 
  |-
−
  | Z
+
  | Enable respawn screen
−
  | Double
+
  | {{Type|Boolean}}
−
  |  
+
  | Set to false when the doImmediateRespawn gamerule is true.
 
  |-
 
  |-
−
  | Pitch
+
  | Do limited crafting
−
  | Angle
+
  | {{Type|Boolean}}
−
  |  
+
  | Whether players can only craft recipes they have already unlocked. Currently unused by the client.
 
  |-
 
  |-
−
  | Yaw
+
  | Dimension Type
−
  | Angle
+
  | {{change|Identifier|VarInt}}
−
  |  
+
  | The ID of the type of dimension in the <code>minecraft:dimension_type</code> registry, defined by the Registry Data packet.
 
  |-
 
  |-
−
  | Data
+
  | Dimension Name
−
  | Int
+
  | {{Type|Identifier}}
−
  | Meaning dependent on the value of the Type field, see [[Object Data]] for details.
+
  | Name of the dimension being spawned into.
 
  |-
 
  |-
−
  | Velocity X
+
  | Hashed seed
−
  | Short
+
  | {{Type|Long}}
−
  |rowspan="3"| Same units as [[#Entity Velocity|Entity Velocity]]. Always sent, but only used when Data is greater than 0 (except for some entities which always ignore it; see [[Object Data]] for details).
+
  | First 8 bytes of the SHA-256 hash of the world's seed. Used client side for biome noise
 
  |-
 
  |-
−
  | Velocity Y
+
  | Game mode
−
  | Short
+
  | {{Type|Unsigned Byte}}
 +
| 0: Survival, 1: Creative, 2: Adventure, 3: Spectator.
 
  |-
 
  |-
−
  | Velocity Z
+
  | Previous Game mode
−
  | Short
+
  | {{Type|Byte}}
−
  |}
+
  | -1: Undefined (null), 0: Survival, 1: Creative, 2: Adventure, 3: Spectator. The previous game mode. Vanilla client uses this for the debug (F3 + N & F3 + F4) game mode switch. (More information needed)
−
 
 
−
==== Update Block Entity ====
 
−
 
 
−
Sets the block entity associated with the block at the given location.
 
−
 
 
−
{| class="wikitable"
 
−
! Packet ID
 
−
! State
 
−
! Bound To
 
−
! Field Name
 
−
! Field Type
 
−
! Notes
 
 
  |-
 
  |-
−
  |rowspan="3"| 0x09
+
  | Is Debug
−
|rowspan="3"| Play
+
  | {{Type|Boolean}}
−
  |rowspan="3"| Client
+
  | True if the world is a {{Minecraft Wiki|debug mode}} world; debug mode worlds cannot be modified and have predefined blocks.
−
  | Location
 
−
| Position
 
−
|  
 
 
  |-
 
  |-
−
  | Action
+
  | Is Flat
−
  | Unsigned Byte
+
  | {{Type|Boolean}}
−
  | The type of update to perform, see below
+
  | True if the world is a {{Minecraft Wiki|superflat}} world; flat worlds have different void fog and a horizon at y=0 instead of y=63.
 
  |-
 
  |-
−
  | NBT Data
+
  | Has death location
−
| [[NBT|NBT Tag]]
+
  | {{Type|Boolean}}
−
| 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)
+
| If true, then the next two fields are present.
−
  |}
 
−
 
 
−
''Action'' field:
 
−
 
 
−
* '''1''': Set data of a mob spawner (everything except for SpawnPotentials: current delay, min/max delay, mob to be spawned, spawn count, spawn range, etc.)
 
−
* '''2''': Set command block text (command and last execution status)
 
−
* '''3''': Set the level, primary, and secondary powers of a beacon
 
−
* '''4''': Set rotation and skin of mob head
 
−
* '''5''': Declare a conduit
 
−
* '''6''': Set base color and patterns on a banner
 
−
* '''7''': Set the data for a Structure tile entity
 
−
* '''8''': Set the destination for a end gateway
 
−
* '''9''': Set the text on a sign
 
−
* '''10''': {{change|Declare a shulker box, no data appears to be sent and the client seems to do fine without this packet. Perhaps it is a leftover from earlier versions?}}
 
−
* '''11''': Declare a bed
 
−
* '''12''': {{Change||Set data of a jigsaw block}}
 
−
* '''13''': {{Change||Set items in a campfire}}
 
−
 
 
−
==== Server Difficulty ====
 
−
 
 
−
Changes the difficulty setting in the client's option menu
 
−
 
 
−
{| class="wikitable"
 
−
! Packet ID
 
−
! State
 
−
! Bound To
 
−
! Field Name
 
−
! Field Type
 
−
! Notes
 
 
  |-
 
  |-
−
  |rowspan="2"| 0x0D
+
  | Death dimension name
−
|rowspan="2"| Play
+
  | {{Type|Optional}} {{Type|Identifier}}
−
|rowspan="2"| Client
+
| Name of the dimension the player died in.
−
| Difficulty
 
−
| Unsigned Byte
 
−
| 0: peaceful, 1: easy, 2: normal, 3: hard
 
−
  |- {{Added}}
 
−
| Difficulty locked?
 
−
| Boolean
 
−
|
 
−
|}
 
−
 
 
−
==== Open Horse Window ====
 
−
 
 
−
{{Change||This packet is used exclusively for opening the horse GUI.  [[#Open Window|Open Window]] is used for all other GUIs, and now has ID 0x59.}}
 
−
 
 
−
{| class="wikitable" {{added}}
 
−
! Packet ID
 
−
! State
 
−
! Bound To
 
−
! Field Name
 
−
! Field Type
 
−
! Notes
 
 
  |-
 
  |-
−
  |rowspan="3"| 0x1F
+
  | Death location
−
|rowspan="3"| Play
+
  | {{Type|Optional}} {{Type|Position}}
−
  |rowspan="3"| Client
+
  | The location that the player died at.
−
| Window ID?
 
−
| Byte
 
−
  |
 
 
  |-
 
  |-
−
  | Number of slots?
+
  | Portal cooldown
−
  | VarInt
+
  | {{Type|VarInt}}
−
  |
+
  | The number of ticks until the player can use the portal again.
 
  |-
 
  |-
−
  | Entity ID?
+
  | Enforces Secure Chat
−
  | Integer
+
  | {{Type|Boolean}}
 
  |
 
  |
 
  |}
 
  |}
  
−
==== Chunk Data ====
+
==== Respawn ====
−
{{Main|Chunk Format}}
 
−
{{See also|#Unload Chunk}}
 
−
 
 
−
The server only sends skylight information for chunk pillars in the {{Minecraft Wiki|Overworld}}, it's up to the client to know in which dimenison the player is currently located. You can also infer this information from the primary bitmask and the amount of uncompressed bytes sent.  This packet also sends all block entities in the chunk (though sending them is not required; it is still legal to send them with [[#Update Block Entity|Update Block Entity]] later).
 
  
 
{| class="wikitable"
 
{| class="wikitable"
Line 1,729: Line 883:
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
−
  |rowspan="9"| {{Change|0x22|0x21}}
+
  | rowspan="12"| 0x47
−
  |rowspan="9"| Play
+
  | rowspan="12"| Play
−
  |rowspan="9"| Client
+
  | rowspan="12"| Client
−
  | Chunk X
+
  | Dimension Type
−
  | Int
+
  | {{change|Identifier|VarInt}}
−
  | Chunk coordinate (block coordinate divided by 16, rounded down)
+
  | The ID of the type of dimension in the <code>minecraft:dimension_type</code> registry, defined by the [[Protocol#Registry_Data|Registry Data]] packet.
 +
|-
 +
| Dimension Name
 +
| {{Type|Identifier}}
 +
| Name of the dimension being spawned into.
 +
|-
 +
| Hashed seed
 +
| {{Type|Long}}
 +
| First 8 bytes of the SHA-256 hash of the world's seed. Used client side for biome noise
 
  |-
 
  |-
−
  | Chunk Z
+
  | Game mode
−
  | Int
+
  | {{Type|Unsigned Byte}}
−
  | Chunk coordinate (block coordinate divided by 16, rounded down)
+
  | 0: Survival, 1: Creative, 2: Adventure, 3: Spectator.
 
  |-
 
  |-
−
  | Full chunk
+
  | Previous Game mode
−
  | Boolean
+
  | {{Type|Byte}}
−
  | See [[Chunk Format#Full chunk|Chunk Format]]
+
  | -1: Undefined (null), 0: Survival, 1: Creative, 2: Adventure, 3: Spectator. The previous game mode. Vanilla client uses this for the debug (F3 + N & F3 + F4) game mode switch. (More information needed)
 
  |-
 
  |-
−
  | Primary Bit Mask
+
  | Is Debug
−
  | VarInt
+
  | {{Type|Boolean}}
−
| Bitmask with bits set to 1 for every 16×16×16 chunk section whose data is included in Data. The least significant bit represents the chunk section at the bottom of the chunk column (from y=0 to y=15).
+
  | True if the world is a {{Minecraft Wiki|debug mode}} world; debug mode worlds cannot be modified and have predefined blocks.
−
|- {{Added}}
 
−
  | Heightmaps
 
−
| [[NBT]]
 
−
| Compound containing one long array named <code>MOTION_BLOCKING</code>, which is a heightmap for the highest solid block at each position in the chunk (as a compacted long array with 256 entries at 9 bits per entry).
 
−
|-
 
−
| Size
 
−
| VarInt
 
−
| Size of Data in bytes
 
 
  |-
 
  |-
−
  | Data
+
  | Is Flat
−
  | Byte array
+
  | {{Type|Boolean}}
−
  | See [[Chunk Format#Data structure|data structure]] in Chunk Format
+
  | True if the world is a {{Minecraft Wiki|superflat}} world; flat worlds have different void fog and a horizon at y=0 instead of y=63.
 
  |-
 
  |-
−
  | Number of block entities
+
  | Has death location
−
  | VarInt
+
  | {{Type|Boolean}}
−
  | Number of elements in the following array
+
  | If true, then the next two fields are present.
 
  |-
 
  |-
−
  | Block entities
+
  | Death dimension Name
−
  | Array of [[NBT]]
+
  | {{Type|Optional}} {{Type|Identifier}}
−
| All block entities in the chunk.  Use the x, y, and z tags in the NBT to determine their positions.
+
  | Name of the dimension the player died in.
−
  |}
 
−
 
 
−
===== Data structure =====
 
−
 
 
−
The data section of the packet contains most of the useful data for the chunk.
 
−
 
 
−
{| class="wikitable"
 
 
  |-
 
  |-
−
  ! Field Name
+
  | Death location
−
  ! Field Type
+
  | {{Type|Optional}} {{Type|Position}}
−
  ! Notes
+
  | The location that the player died at.
 
  |-
 
  |-
−
  | Data
+
  | Portal cooldown
−
  | Array of [[#Chunk Section structure|Chunk Section]]
+
  | {{Type|VarInt}}
−
  | The number of elements in the array is equal to the number of bits set in Primary Bit Mask. Sections are sent bottom-to-top, i.e. the first section, if sent, extends from Y=0 to Y=15.
+
  | The number of ticks until the player can use the portal again.
 
  |-
 
  |-
−
  | Biomes
+
  | Data kept
−
  | Optional Int Array
+
  | {{Type|Byte}}
−
  | Only sent if full chunk is true; 256 entries if present
+
  | Bit mask. 0x01: Keep attributes, 0x02: Keep metadata. Tells which data should be kept on the client side once the player has respawned.
 +
In the Notchian implementation, this is context dependent:
 +
* normal respawns (after death) keep no data;
 +
* exiting the end poem/credits keeps the attributes;
 +
* other dimension changes (portals or teleports) keep all data.
 
  |}
 
  |}
  
−
===== Chunk Section structure =====
+
==== Store Cookie (play) ====
  
−
A Chunk Section is defined in terms of other [[data types]]. A Chunk Section consists of the following fields:
+
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
−
  ! Field Name
+
! State
−
  ! Field Type
+
! Bound To
 +
  ! colspan="2"| Field Name
 +
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
−
|- {{added}}
 
−
| Block count
 
−
| Short
 
−
| Number of non-air blocks present in the chunk section, for lighting purposes.  "Non-air" is defined as any block other than air, cave air, and void air (in particular, note that fluids such as water are still counted).
 
 
  |-
 
  |-
−
  | Bits Per Block
+
  | rowspan="3"| 0x6B
−
  | Unsigned Byte
+
| rowspan="3"| Play
−
  | Determines how many bits are used to encode a block. Note that not all numbers are valid here.
+
| rowspan="3"| Client
 +
  | colspan="2"| Key
 +
| colspan="2"| Identifier
 +
  | The identifier of the cookie.
 
  |-
 
  |-
−
  | Palette
+
  | colspan="2"| Payload Length
−
  | Varies
+
  | colspan="2"| VarInt
−
  | See below for the format.
+
  | Length of the following byte array.
 
  |-
 
  |-
−
  | Data Array Length
+
  | colspan="2"| Payload
−
| VarInt
+
  | colspan="2"| Byte Array (5120)
−
| Number of longs in the following array
+
  | The data of the cookie.
−
  |-
 
−
| Data Array
 
−
  | Array of Long
 
−
| Compacted list of 4096 indices pointing to state IDs in the Palette
 
−
|- {{removed}}
 
−
| Block Light
 
−
| Byte Array
 
−
| Half byte per block
 
−
|- {{removed}}
 
−
| Sky Light
 
−
| Optional Byte Array
 
−
| Only if in the Overworld; half byte per block
 
 
  |}
 
  |}
  
−
Data Array{{change|, Block Light, and Sky Light are|is}} given for each block with increasing x coordinates, within rows of increasing z coordinates, within layers of increasing y coordinates.  {{change|For the half-byte light arrays, even-indexed items (those with an even x coordinate, starting at 0) are packed into the ''low bits'', odd-indexed into the ''high bits''.}}
+
==== Transfer (play) ====
  
−
==== Join Game ====
+
Notifies the client that it should transfer to the given server. Cookies previously stored are preserved between server transfers.
  
−
See [[Protocol Encryption]] for information on logging in.
+
{| class="wikitable" {{added}}
−
 
 
−
{| class="wikitable"
 
 
  ! Packet ID
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
−
  ! Field Name
+
  ! colspan="2"| Field Name
−
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
−
  |rowspan="8"| 0x25
+
  | rowspan="2"| 0x73
−
  |rowspan="8"| Play
+
  | rowspan="2"| Play
−
  |rowspan="8"| Client
+
  | rowspan="2"| Client
−
  | Entity ID
+
  | colspan="2"| Host
−
| Int
+
  | colspan="2"| String
−
| The player's Entity ID (EID)
+
  | The hostname of IP of the server.
−
|-
 
−
| Gamemode
 
−
| Unsigned Byte
 
−
| 0: Survival, 1: Creative, 2: Adventure, 3: Spectator. Bit 3 (0x8) is the hardcore flag.
 
−
|-
 
−
  | Dimension
 
−
| Int Enum
 
−
| -1: Nether, 0: Overworld, 1: End; also, note that this is not a VarInt but instead a regular int.
 
−
|- {{removed}}
 
−
| Difficulty
 
−
| Unsigned Byte
 
−
| 0: peaceful, 1: easy, 2: normal, 3: hard
 
−
|-
 
−
  | Max Players
 
−
| Unsigned Byte
 
−
| Was once used by the client to draw the player list, but now is ignored
 
 
  |-
 
  |-
−
  | Level Type
+
  | colspan="2"| Port
−
| String Enum (16)
+
  | colspan="2"| VarInt
−
  | default, flat, largeBiomes, amplified, default_1_1
+
  | The port of the server.
−
|- {{added}}
 
−
| View Distance
 
−
| VarInt
 
−
  | Render distance (2-32)
 
−
|-
 
−
| Reduced Debug Info
 
−
| Boolean
 
−
| If true, a Notchian client shows reduced information on the {{Minecraft Wiki|debug screen}}.  For servers in development, this should almost always be false.
 
 
  |}
 
  |}
  
−
==== Map Data ====
+
==== Update Attributes ====
  
−
Updates a rectangular area on a {{Minecraft Wiki|map}} item.
+
Sets {{Minecraft Wiki|Attribute|attributes}} on the given entity.
  
 
{| class="wikitable"
 
{| class="wikitable"
Line 1,885: Line 999:
 
  ! 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="17"| 0x26
+
  | rowspan="6"| 0x71
−
  |rowspan="17"| Play
+
  | rowspan="6"| Play
−
  |rowspan="17"| Client
+
  | rowspan="6"| Client
−
  |colspan="2"| Map ID
+
  | colspan="2"| Entity ID
−
  |colspan="2"| VarInt
+
  | colspan="2"| VarInt
−
| Map ID of the map being modified
 
−
|-
 
−
|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)
 
−
|-
 
−
|colspan="2"| Tracking Position
 
−
|colspan="2"| Boolean
 
−
| Specifies whether player and item frame icons are shown
 
−
|- {{Added}}
 
−
|colspan="2"| Locked
 
−
|colspan="2"| Boolean
 
−
| True if the map has been locked in a cartography table
 
−
|-
 
−
|colspan="2"| Icon Count
 
−
|colspan="2"| VarInt
 
−
| Number of elements in the following array
 
−
|-
 
−
|rowspan="5"| Icon
 
−
| Type
 
−
|rowspan="6"| Array
 
−
| VarInt enum
 
−
| See below
 
−
|-
 
−
| X
 
−
| Byte
 
−
| Map coordinates: -128 for furthest left, +127 for furthest right
 
−
|-
 
−
| Z
 
−
| Byte
 
−
| Map coordinates: -128 for highest, +127 for lowest
 
−
|-
 
−
| Direction
 
−
| Byte
 
−
| 0-15
 
−
|-
 
−
| Has Display Name
 
−
| Boolean
 
 
  |
 
  |
 
  |-
 
  |-
−
| Display Name
+
  | colspan="2"| Number Of Properties
−
| Optional [[Chat]]
+
  | colspan="2"| VarInt
−
| Only present if previous Boolean is true
+
  | Number of elements in the following array.
−
|-
 
−
  |colspan="2"| Columns
 
−
  |colspan="2"| Byte
 
−
  | Number of columns updated
 
 
  |-
 
  |-
−
  |colspan="2"| Rows
+
  | rowspan="4"| Property
−
  |colspan="2"| Optional Byte
+
  | {{change|Key|Id}}
−
  | Only if Columns is more than 0; number of rows updated
+
| rowspan="4"| Array
 +
| {{change|Identifier|VarInt Enum}}
 +
  | See below.
 
  |-
 
  |-
−
  |colspan="2"| X
+
  | Value
−
  |colspan="2"| Optional Byte
+
  | Double
−
  | Only if Columns is more than 0; x offset of the westernmost column
+
  | See below.
 
  |-
 
  |-
−
  |colspan="2"| Z
+
  | Number Of Modifiers
−
  |colspan="2"| Optional Byte
+
  | VarInt
−
  | Only if Columns is more than 0; z offset of the northernmost row
+
  | Number of elements in the following array.
 
  |-
 
  |-
−
  |colspan="2"| Length
+
  | Modifiers
−
  |colspan="2"| Optional VarInt
+
  | Array of Modifier Data
−
| Only if Columns is more than 0; length of the following array
+
  | See {{Minecraft Wiki|Attribute#Modifiers}}. Modifier Data defined below.
−
|-
 
−
|colspan="2"| Data
 
−
  |colspan="2"| Optional Array of Unsigned Byte
 
−
| Only if Columns is more than 0; see {{Minecraft Wiki|Map item format}}
 
 
  |}
 
  |}
  
−
For icons, a direction of 0 is a vertical icon and increments by 22.5&deg; (360/16).
+
Known Key values (see also {{Minecraft Wiki|Attribute#Modifiers}}):
  
−
Types are based off of rows and columns in <code>map_icons.png</code>:
+
These changed between 24w03b and 24w13a, TODO: Update this
  
 
{| class="wikitable"
 
{| class="wikitable"
 
  |-
 
  |-
−
  ! Icon type
+
  ! Id
−
  ! Result
+
  ! Key
 +
! Default
 +
! Min
 +
! Max
 +
! Label
 
  |-
 
  |-
 
  | 0
 
  | 0
−
  | White arrow (players)
+
  | generic.armor
 +
| 0.0
 +
| 0.0
 +
| 30.0
 +
| Armor.
 
  |-
 
  |-
 
  | 1
 
  | 1
−
  | Green arrow (item frames)
+
  | generic.armor_toughness
 +
| 0.0
 +
| 0.0
 +
| 20.0
 +
| Armor Toughness.
 
  |-
 
  |-
 
  | 2
 
  | 2
−
  | Red arrow
+
  | generic.attack_damage
 +
| 2.0
 +
| 0.0
 +
| 2048.0
 +
| Attack Damage.
 
  |-
 
  |-
 
  | 3
 
  | 3
−
  | Blue arrow
+
  | generic.attack_knockback
 +
| 0.0
 +
| 0.0
 +
| 5.0
 +
| Attack Knockback.
 
  |-
 
  |-
 
  | 4
 
  | 4
−
  | White cross
+
  | generic.attack_speed
−
  |-
+
| 4.0
 +
| 0.0
 +
| 1024.0
 +
| Attack Speed.
 +
  |- {{added}}
 
  | 5
 
  | 5
−
  | Red pointer
+
  | generic.block_interaction_range
−
  |-
+
| 4.5
 +
| 0.0
 +
| 64.0
 +
| Block Interaction Range.
 +
  |- {{added}}
 
  | 6
 
  | 6
−
  | White circle (off-map players)
+
  | generic.entity_interaction_range
 +
| 3.0
 +
| 0.0
 +
| 64.0
 +
| Entity Interaction Range.
 
  |-
 
  |-
 
  | 7
 
  | 7
−
  | Small white circle (far-off-map players)
+
  | generic.flying_speed
 +
| 0.4
 +
| 0.0
 +
| 1024.0
 +
| Flying Speed.
 
  |-
 
  |-
 
  | 8
 
  | 8
−
  | Mansion
+
  | generic.follow_range
 +
| 32.0
 +
| 0.0
 +
| 2048.0
 +
| Follow Range.
 
  |-
 
  |-
 
  | 9
 
  | 9
−
  | Temple
+
  | horse.jump_strength
 +
| 0.7
 +
| 0.0
 +
| 2.0
 +
| Jump Strength.
 
  |-
 
  |-
 
  | 10
 
  | 10
−
  | White Banner
+
  | generic.knockback_resistance
 +
| 0.0
 +
| 0.0
 +
| 1.0
 +
| Knockback Resistance.
 
  |-
 
  |-
 
  | 11
 
  | 11
−
  | Orange Banner
+
  | generic.luck
 +
| 0.0
 +
| -1024.0
 +
| 1024.0
 +
| Luck.
 
  |-
 
  |-
 
  | 12
 
  | 12
−
  | Magenta Banner
+
  | generic.max_absorption
 +
| 0.0
 +
| 0.0
 +
| 2048.0
 +
| Max Absorption.
 
  |-
 
  |-
 
  | 13
 
  | 13
−
  | Light Blue Banner
+
  | generic.max_health
 +
| 20.0
 +
| 1.0
 +
| 1024.0
 +
| Max Health.
 
  |-
 
  |-
 
  | 14
 
  | 14
−
  | Yellow Banner
+
  | generic.movement_speed
−
  |-
+
| 0.7
 +
| 0.0
 +
| 1024.0
 +
| Movement Speed.
 +
  |- {{added}}
 
  | 15
 
  | 15
−
  | Lime Banner
+
  | generic.scale
 +
| 1.0
 +
| 0.0625
 +
| 16.0
 +
| Scale.
 
  |-
 
  |-
 
  | 16
 
  | 16
−
  | Pink Banner
+
  | zombie.spawn_reinforcements
−
  |-
+
| 0.0
 +
| 0.0
 +
| 1.0
 +
| Spawn Reinforcements Chance.
 +
  |- {{added}}
 
  | 17
 
  | 17
−
  | Gray Banner
+
  | generic.step_height
−
  |-
+
  | 0.6
−
  | 18
+
  | 0.0
−
  | Light Gray Banner
+
  | 10.0
−
  |-
+
  | Step Height.
−
| 19
 
−
| Cyan Banner
 
−
|-
 
−
| 20
 
−
| Purple Banner
 
−
|-
 
−
| 21
 
−
| Blue Banner
 
−
|-
 
−
| 22
 
−
| Brown Banner
 
−
|-
 
−
| 23
 
−
| Green Banner
 
−
|-
 
−
| 24
 
−
| Red Banner
 
−
|-
 
−
| 25
 
−
| Black Banner
 
−
|-
 
−
| 26
 
−
| Treasure marker
 
 
  |}
 
  |}
  
−
==== Open Book ====
+
''Modifier Data'' structure:
  
−
Sent when a player right clicks with a signed book. This tells the client to open the book GUI.
+
{| class="wikitable"
−
 
 
−
{| class="wikitable" {{Added}}
 
−
! Packet ID
 
−
! State
 
−
! Bound To
 
−
! Field Name
 
−
! Field Type
 
−
! Notes
 
 
  |-
 
  |-
−
|rowspan="1"| 0x2D
 
−
|rowspan="1"| Play
 
−
|rowspan="1"| Client
 
−
| Hand
 
−
| VarInt enum
 
−
| 0: Main hand, 1: Off hand
 
−
|}
 
−
 
−
==== Use Bed ====
 
−
 
−
{{change|This packet tells that a player goes to bed.}}
 
−
 
−
{{change|The client with the matching Entity ID will go into bed mode.}}
 
−
 
−
{{change|This Packet is sent to all nearby players including the one sent to bed.}}
 
−
 
−
{{change|Any packets sent with a location not currently occupied by a bed will be ignored by clients.}}
 
−
 
−
{| class="wikitable" {{removed}}
 
−
! Packet ID
 
−
! State
 
−
! Bound To
 
 
  ! Field Name
 
  ! Field Name
 
  ! Field Type
 
  ! Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
−
  |rowspan="2"| 0x33
+
  | UUID
−
|rowspan="2"| Play
+
  | UUID
−
|rowspan="2"| Client
+
  |
−
| Entity ID
 
−
  | VarInt
 
−
  | Sleeping player's EID
 
 
  |-
 
  |-
−
  | Location
+
  | Amount
−
  | Position
+
  | Double
−
  | Block location of the head part of the bed
+
  | May be positive or negative.
−
|}
 
−
 
 
−
==== Respawn ====
 
−
 
 
−
To change the player's dimension (overworld/nether/end), send them a respawn packet with the appropriate dimension, followed by prechunks/chunks for the new dimension, and finally a position and look packet. You do not need to unload chunks, the client will do it automatically.
 
−
 
 
−
{| class="wikitable"
 
−
! Packet ID
 
−
! State
 
−
! Bound To
 
−
! Field Name
 
−
! Field Type
 
−
! Notes
 
 
  |-
 
  |-
−
  |rowspan="4"| 0x3A
+
  | Operation
−
|rowspan="4"| Play
+
  | Byte
−
|rowspan="4"| Client
+
  | See below.
−
| Dimension
 
−
| Int Enum
 
−
| -1: The Nether, 0: The Overworld, 1: The End
 
−
|- {{removed}}
 
−
| Difficulty
 
−
| Unsigned Byte
 
−
  | 0: Peaceful, 1: Easy, 2: Normal, 3: Hard
 
−
|-
 
−
| Gamemode
 
−
| Unsigned Byte
 
−
  | 0: survival, 1: creative, 2: adventure, 3: spectator. The hardcore flag is not included
 
−
|-
 
−
| Level Type
 
−
| String (16)
 
−
| Same as [[#Join Game|Join Game]]
 
 
  |}
 
  |}
  
−
{{Warning2|Avoid changing player's dimension to same dimension they were already in unless they are dead. If you change the dimension to one they are already in, weird bugs can occur, such as the player being unable to attack other players in new world (until they die and respawn).
+
The operation controls how the base value of the modifier is changed.
  
−
If you must respawn a player in the same dimension without killing them, send two respawn packets, one to a different world and then another to the world you want. You do not need to complete the first respawn; it only matters that you send two packets.}}
+
* 0: Add/subtract amount
 +
* 1: Add/subtract amount percent of the current value
 +
* 2: Multiply by amount percent
  
−
==== Entity Sound Effect ====
+
All of the 0's are applied first, and then the 1's, and then the 2's.
  
−
Plays a sound effect from an entity.
+
==== Entity Effect ====
  
 
{| class="wikitable"
 
{| class="wikitable"
Line 2,152: Line 1,212:
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
−
  |rowspan="5"| 0x50
+
  | rowspan="7"| 0x72
−
  |rowspan="5"| Play
+
  | rowspan="7"| Play
−
  |rowspan="5"| Client
+
  | rowspan="7"| Client
−
| Sound ID
 
−
| VarInt
 
−
| ID of hardcoded sound event ([https://pokechu22.github.io/Burger/1.14.1.html#sounds events] as of 1.14.1)
 
−
|-
 
−
| Sound Category
 
−
| VarInt Enum
 
−
| The category that this sound will be played from ([https://gist.github.com/konwboj/7c0c380d3923443e9d55 current categories])
 
−
|-
 
 
  | Entity ID
 
  | Entity ID
 
  | VarInt
 
  | VarInt
 
  |
 
  |
 
  |-
 
  |-
−
  | Volume
+
  | Effect ID
−
| Float
 
−
| 1.0 is 100%, capped between 0.0 and 1.0 by Notchian clients
 
−
|-
 
−
| Pitch
 
−
| Float
 
−
| Float between 0.5 and 2.0 by Notchian clients
 
−
|}
 
−
 
 
−
==== Declare Recipes ====
 
−
 
 
−
{| class="wikitable"
 
−
! Packet ID
 
−
! State
 
−
! Bound To
 
−
!colspan="2"| Field Name
 
−
!colspan="2"| Field Type
 
−
! Notes
 
−
|-
 
−
|rowspan="5"| {{Change|0x54|0x5A}}
 
−
|rowspan="5"| Play
 
−
|rowspan="5"| Client
 
−
|colspan="2"| Num Recipes
 
−
|colspan="2"| VarInt
 
−
| Number of elements in the following array
 
−
|-
 
−
|rowspan="4"| Recipe
 
−
|{{removed}}| Recipe ID
 
−
|rowspan="4"| Array
 
−
|{{removed}}| Identifier
 
−
|{{removed}}|
 
−
|-
 
−
| Type
 
−
| {{Change|String|Identifier}}
 
−
| The recipe serializer, see below
 
−
|- {{Added}}
 
−
| Recipe ID
 
−
| Identifier
 
−
|
 
−
|-
 
−
| Data
 
−
| Optional, varies
 
−
| Additional data for the recipe.  For some types, there will be no data.
 
−
|}
 
−
 
 
−
Recipe serializers:
 
−
 
 
−
{| class="wikitable"
 
−
! Serializer
 
−
! Description
 
−
! Data
 
−
|-
 
−
| <code>{{change||minecraft:}}crafting_shapeless</code>
 
−
| Shapeless crafting recipe.  All items in the ingredient list must be present, but in any order/slot.
 
−
| As follows:
 
−
  {| class="wikitable"
 
−
    ! Name
 
−
    ! Type
 
−
    ! Description
 
−
    |-
 
−
    | Group
 
−
    | String
 
−
    | Used to group similar recipes together in the recipe book.  Tag is present in recipe JSON.
 
−
    |-
 
−
    | Ingredient count
 
−
    | VarInt
 
−
    | Number of elements in the following array
 
−
    |-
 
−
    | Ingredients
 
−
    | Array of Ingredient
 
−
    |
 
−
    |-
 
−
    | Result
 
−
    | [[Slot]]
 
−
    |
 
−
    |}
 
−
|-
 
−
| <code>{{change||minecraft:}}crafting_shaped</code>
 
−
| Shaped crafting recipe.  All items must be present in the same pattern (which may be flipped horizontally or translated)
 
−
| As follows:
 
−
  {| class="wikitable"
 
−
    ! Name
 
−
    ! Type
 
−
    ! Description
 
−
    |-
 
−
    | Width
 
−
    | VarInt
 
−
    |
 
−
    |-
 
−
    | Height
 
−
    | VarInt
 
−
    |
 
−
    |-
 
−
    | Group
 
−
    | String
 
−
    | Used to group similar recipes together in the recipe book.  Tag is present in recipe JSON.
 
−
    |-
 
−
    | Ingredients
 
−
    | Array of Ingredient
 
−
    | Length is width * height.  Indexed by x + (y * width).
 
−
    |-
 
−
    | Result
 
−
    | [[Slot]]
 
−
    |
 
−
    |}
 
−
|-
 
−
| <code>{{change||minecraft:}}crafting_special_armordye</code>
 
−
| Recipe for dying leather armor
 
−
| None
 
−
|-
 
−
| <code>{{change||minecraft:}}crafting_special_bookcloning</code>
 
−
| Recipe for copying contents of written books
 
−
| None
 
−
|-
 
−
| <code>{{change||minecraft:}}crafting_special_mapcloning</code>
 
−
| Recipe for copying maps
 
−
| None
 
−
|-
 
−
| <code>{{change||minecraft:}}crafting_special_mapextending</code>
 
−
| Recipe for adding paper to maps
 
−
| None
 
−
|-
 
−
| <code>{{change||minecraft:}}crafting_special_firework_rocket</code>
 
−
| Recipe for making firework rockets
 
−
| None
 
−
|-
 
−
| <code>{{change||minecraft:}}crafting_special_firework_star</code>
 
−
| Recipe for making firework stars
 
−
| None
 
−
|-
 
−
| <code>{{change||minecraft:}}crafting_special_firework_star_fade</code>
 
−
| Recipe for making firework stars fade between multiple colors
 
−
| None
 
−
|-
 
−
| <code>{{change||minecraft:}}crafting_special_repairitem</code>
 
−
| Recipe for repairing items via crafting
 
−
| None
 
−
|-
 
−
| <code>{{change||minecraft:}}crafting_special_tippedarrow</code>
 
−
| Recipe for crafting tipped arrows
 
−
| None
 
−
|-
 
−
| <code>{{change||minecraft:}}crafting_special_bannerduplicate</code>
 
−
| Recipe for copying banner patterns
 
−
| None
 
−
|-
 
−
| <code>{{change||minecraft:}}crafting_special_banneraddpattern</code>
 
−
| Recipe for adding patterns to banners
 
−
| None
 
−
|-
 
−
| <code>{{change||minecraft:}}crafting_special_shielddecoration</code>
 
−
| Recipe for applying a banner's pattern to a shield
 
−
| None
 
−
|-
 
−
| <code>{{change||minecraft:}}crafting_special_shulkerboxcoloring</code>
 
−
| Recipe for recoloring a shulker box
 
−
| None
 
−
|- {{Added}}
 
−
| <code>minecraft:crafting_special_suspiciousstew</code>
 
−
| Recipe for crafting suspicious stew with various affects.
 
−
| None
 
−
|-
 
−
| <code>{{change||minecraft:}}smelting</code>
 
−
| Smelting recipe
 
−
|rowspan="4"| All of these have the same format, as follows:
 
−
  {| class="wikitable"
 
−
    ! Name
 
−
    ! Type
 
−
    ! Description
 
−
    |-
 
−
    | Group
 
−
    | String
 
−
    | Used to group similar recipes together in the recipe book.
 
−
    |-
 
−
    | Ingredient
 
−
    | Ingredient
 
−
    |
 
−
    |-
 
−
    | Result
 
−
    | [[Slot]]
 
−
    |
 
−
    |-
 
−
    | Experience
 
−
    | Float
 
−
    |
 
−
    |-
 
−
    | Cooking time
 
−
    | VarInt
 
−
    |
 
−
    |}
 
−
|- {{Added}}
 
−
| <code>minecraft:blasting</code>
 
−
| Recipes in a blast furnace.
 
−
|- {{Added}}
 
−
| <code>minecraft:smoking</code>
 
−
| Recipes in a smoker.
 
−
|- {{Added}}
 
−
| <code>minecraft:campfire_cooking</code>
 
−
| Recipes in a campfire.
 
−
|- {{Added}}
 
−
| <code>{{change||minecraft:stonecutting}}</code>
 
−
| {{change||Stonecutting recipe.}}
 
−
| As follows:
 
−
  {| class="wikitable"
 
−
    ! Name
 
−
    ! Type
 
−
    ! Description
 
−
    |-
 
−
    | Group
 
−
    | String
 
−
    | Used to group similar recipes together in the recipe book.  Tag is present in recipe JSON.
 
−
    |-
 
−
    | Ingredient count
 
−
    | VarInt
 
−
    | Number of elements in the following array
 
−
    |-
 
−
    | Ingredients
 
−
    | Array of Ingredient
 
−
    |
 
−
    |-
 
−
    | Result
 
−
    | [[Slot]]
 
−
    |
 
−
    |}
 
−
|-
 
−
|}
 
−
 
 
−
Ingredient is defined as:
 
−
 
 
−
{| class="wikitable"
 
−
! Name
 
−
! Type
 
−
! Description
 
−
|-
 
−
| Count
 
 
  | VarInt
 
  | VarInt
−
  | Number of elements in the following array
+
  | See {{Minecraft Wiki|Status effect#Effect list|this table}}.
 
  |-
 
  |-
−
  | Items
+
  | Amplifier
−
  | Array of [[Slot]]
+
  | Byte
−
  | Any item in this array may be used for the recipe.  The count of each item should be 1.
+
  | Notchian client displays effect level as Amplifier + 1.
−
|}
 
−
 
 
−
==== Tags ====
 
−
 
 
−
{| class="wikitable"
 
−
! Packet ID
 
−
! State
 
−
! Bound To
 
−
! Field Name
 
−
! Field Type
 
−
! Notes
 
−
|-
 
−
|rowspan="4"| {{change|0x55|0x5B}}
 
−
|rowspan="4"| Play
 
−
|rowspan="4"| Client
 
−
| Block Tags
 
−
| (See below)
 
−
| IDs are block IDs
 
−
|-
 
−
| Item Tags
 
−
| (See below)
 
−
| IDs are item IDs
 
 
  |-
 
  |-
−
  | Fluid Tags
+
  | Duration
−
| (See below)
 
−
| IDs are fluid IDs
 
−
|- {{added}}
 
−
| Entity Tags
 
−
| (See below)
 
−
| IDs are entity type IDs
 
−
|}
 
−
 
 
−
==== Update Light ====
 
−
 
 
−
Updates light levels for a chunk.
 
−
 
 
−
{| class="wikitable" {{added}}
 
−
! Packet ID
 
−
! State
 
−
! Bound To
 
−
!colspan="2"| Field Name
 
−
!colspan="2"| Field Type
 
−
! Notes
 
−
|-
 
−
|rowspan="10"| 0x24
 
−
|rowspan="10"| Play
 
−
|rowspan="10"| Client
 
−
|colspan="2"| Chunk X
 
−
|colspan="2"| VarInt
 
−
| Chunk coordinate (block coordinate divided by 16, rounded down)
 
−
|-
 
−
|colspan="2"| Chunk Z
 
−
|colspan="2"| VarInt
 
−
| Chunk coordinate (block coordinate divided by 16, rounded down)
 
−
|-
 
−
|colspan="2"| Sky Light Mask
 
−
|colspan="2"| VarInt
 
−
| Mask containing 18 bits, with the lowest bit corresponding to chunk section -1 (in the void, y=-16 to y=-1) and the highest bit for chunk section 16 (above the world, y=256 to y=271)
 
−
|-
 
−
|colspan="2"| Block Light Mask
 
−
|colspan="2"| VarInt
 
−
| Mask containing 18 bits, with the same order as sky light
 
−
|-
 
−
|colspan="2"| Empty Sky Light Mask
 
−
|colspan="2"| VarInt
 
−
| Mask containing 18 bits, which indicates sections that have 0 for all their sky light values.  If a section is set in both this mask and the main sky light mask, it is ignored for this mask and it is included in the sky light arrays (the notchian server does not create such masks).  If it is only set in this mask, it is not included in the sky light arrays.
 
−
|-
 
−
|colspan="2"| Empty Block Light Mask
 
−
|colspan="2"| VarInt
 
−
| Mask containing 18 bits, which indicates sections that have 0 for all their block light values.  If a section is set in both this mask and the main block light mask, it is ignored for this mask and it is included in the block light arrays (the notchian server does not create such masks).  If it is only set in this mask, it is not included in the block light arrays.
 
−
|-
 
−
|rowspan="2"| Sky Light arrays
 
−
| Length
 
−
|rowspan="2"| Array
 
 
  | VarInt
 
  | VarInt
−
  | Length of the following array in bytes (always 2048)
+
  | Duration in ticks. (-1 for infinite)
 
  |-
 
  |-
−
  | Sky Light array
+
  | Flags
−
  | Array of 2048 bytes
+
  | Byte
−
| There is 1 array for each bit set to true in the sky light mask, starting with the lowest value.  Half a byte per light value.
+
  | Bit field, see below.
−
|-
 
−
|rowspan="2"| Block Light arrays
 
−
| Length
 
−
|rowspan="2"| Array
 
−
| VarInt
 
−
| Length of the following array in bytes (always 2048)
 
−
|-
 
−
| Block Light array
 
−
| Array of 2048 bytes
 
−
| There is 1 array for each bit set to true in the block light mask, starting with the lowest value.  Half a byte per light value.
 
−
|}
 
−
 
 
−
Individual block or sky light arrays are is given for each block with increasing x coordinates, within rows of increasing z coordinates, within layers of increasing y coordinates. Even-indexed items (those with an even x coordinate, starting at 0) are packed into the low bits, odd-indexed into the high bits.
 
−
 
 
−
==== Open Window ====
 
−
 
 
−
This is sent to the client when it should open an inventory, such as a chest, workbench, or furnace. This message is not sent anywhere for clients opening their own inventory.  {{change||For horses, use [[#Open Horse Window|Open Horse Window]]}}
 
−
 
 
−
{| class="wikitable"
 
−
! Packet ID
 
−
! State
 
−
! Bound To
 
−
! Field Name
 
−
! Field Type
 
−
! Notes
 
−
|-
 
−
|rowspan="5"| {{change|0x14|0x2E}}
 
−
|rowspan="5"| Play
 
−
|rowspan="5"| Client
 
−
| Window ID
 
−
| {{change|Unsigned Byte|VarInt}}
 
−
  | A unique id number for the window to be displayed. Notchian server implementation is a counter, starting at 1.
 
−
|-
 
−
| Window Type
 
−
| {{change|String (32)|VarInt}}
 
−
| The window type to use for display. {{change|See [[Inventory]] for a list|contained in the <code>minecraft:menu</code> regisry}}.
 
−
|-
 
−
| Window Title
 
−
| [[Chat]]
 
−
| The title of the window
 
 
  |- {{removed}}
 
  |- {{removed}}
−
  | Number Of Slots
+
  | Has Factor Data
−
  | Unsigned Byte
+
  | Boolean
−
  | Number of slots in the window (excluding the number of slots in the player inventory). Always 0 for non-storage windows (e.g. Workbench, Anvil).
+
  | Used in DARKNESS effect
 
  |- {{removed}}
 
  |- {{removed}}
−
  | Entity ID
+
  | Factor Codec
−
  | Optional Int
+
  | NBT Tag
−
  | EntityHorse's EID. Only sent when Window Type is “EntityHorse”
+
  | See below
 
  |}
 
  |}
  
−
==== Trade List ====
+
{{Need Info|What exact effect does the blend bit flag have on the client? What happens if it is used on effects besides DARKNESS?}}
  
−
The list of trades a villager NPC is offering.
+
Within flags:
  
−
{| class="wikitable"
+
* 0x01: Is ambient - was the effect spawned from a beacon?  All beacon-generated effects are ambient.  Ambient effects use a different icon in the HUD (blue border rather than gray).  If all effects on an entity are ambient, the [[Entity_metadata#Living Entity|"Is potion effect ambient" living metadata field]] should be set to true.  Usually should not be enabled.
−
  ! Packet ID
+
* 0x02: Show particles - should all particles from this effect be hidden?  Effects with particles hidden are not included in the calculation of the effect color, and are not rendered on the HUD (but are still rendered within the inventory).  Usually should be enabled.
−
  ! State
+
* 0x04: Show icon - should the icon be displayed on the client?  Usually should be enabled.
−
  ! Bound To
+
* {{change||0x08: Blend - should the effect's hard-coded blending be applied?  Currently only used in the DARKNESS effect to apply extra void fog and adjust the gamma value for lighting.}}
−
!colspan="2"| Field Name
+
 
−
!colspan="2"| Field Type
+
{{change|Factor Data|}}
−
! Notes
+
{| class="wikitable" {{removed}}
 +
  !Name
 +
  !Type
 +
  !style="width: 250px;" colspan="2"| Notes
 
  |-
 
  |-
−
  |rowspan="16"| 0x27
+
  | padding_duration
−
  |rowspan="16"| Play
+
  | TAG_INT
−
  |rowspan="16"| Client
+
  |
 
  |-
 
  |-
−
  | colspan="2" | Window ID
+
  | factor_start
−
  | colspan="2" | VarInt
+
  | TAG_FLOAT
−
  | The ID of the window that is open; this is an int rather than a byte.
+
  |
 
  |-
 
  |-
−
  | colspan="2" | Size
+
  | factor_target
−
| colspan="2" | Byte
+
  | TAG_FLOAT
−
| The number of trades in the following array
+
  |
−
|-
 
−
| rowspan="10" | Trades
 
−
| Input item 1
 
−
| rowspan="10" | Array
 
−
| [[Slot]]
 
−
| The first item the villager is buying
 
−
|-
 
−
| Output item
 
−
| [[Slot]]
 
−
| The item the villager is selling
 
−
|-
 
−
| Has second item
 
−
| Boolean
 
−
| Whether there is a second item
 
−
|-
 
−
| Input item 2
 
−
| Optional [[Slot]]
 
−
| The second item the villager is buying; only present if they have a second item.
 
−
|-
 
−
| Trade disabled
 
−
| Boolean
 
−
| True if the trade is disabled; false if the trade is enabled.
 
−
|-
 
−
| Number of trade uses
 
−
  | Integer
 
−
  | Number of times the trade has been used so far
 
 
  |-
 
  |-
−
  | Maximum number of trade uses
+
  | factor_current
−
  | Integer
+
  | TAG_FLOAT
−
| Number of times this trade can be used
 
−
|- {{Added}}
 
−
| XP
 
−
| Integer
 
 
  |
 
  |
−
|- {{Added}}
 
−
| Special Price
 
−
| Integer
 
−
|
 
−
|- {{Added}}
 
−
| Price Multiplier
 
−
| Float
 
−
|
 
−
|- {{Added}}
 
−
|colspan="2"| Villager level
 
−
|colspan="2"| VarInt
 
−
| Appears on the trade GUI; meaning comes from the translation key <code>merchant.level.</code> + level.
 
−
1: Novice, 2: Apprentice, 3: Journeyman, 4: Expert, 5: Master
 
−
|- {{Added}}
 
−
|colspan="2"| Experience
 
−
|colspan="2"| VarInt
 
−
| Total experience for this villager (always 0 for the wandering trader)
 
−
|- {{Added}}
 
−
|colspan="2"| Is regular villager
 
−
|colspan="2"| Boolean
 
−
| True if this is a regular villager; false for the wandering trader.  When false, hides the villager level and some other GUI elements.
 
−
|}
 
−
 
−
[[File:1.14-merchant-slots.png|thumb|The merchant UI, for reference]]
 
−
{{-}}
 
−
 
−
==== Update View Position ====
 
−
 
−
{{Need Info|Why is this even needed?  Is there a better name for it?  My guess is that it's something to do with logical behavior with latency, but it still seems weird.}}
 
−
 
−
Updates the client's location.  This is used to determine what chunks should remain loaded and if a chunk load should be ignored; chunks outside of the view distance may be unloaded.
 
−
 
−
Sent whenever the player moves across a chunk border horizontally, and also (according to testing) for any integer change in the vertical axis, even if it doesn't go across a chunk section border.
 
−
 
−
{| class="wikitable" {{added}}
 
−
! Packet ID
 
−
! State
 
−
! Bound To
 
−
! Field Name
 
−
! Field Type
 
−
! Notes
 
 
  |-
 
  |-
−
  |rowspan="2"| 0x40
+
  | effect_changed_timestamp
−
|rowspan="2"| Play
+
  | TAG_INT
−
|rowspan="2"| Client
 
−
| Chunk X
 
−
| VarInt
 
−
  | Chunk X coordinate of the player's position
 
 
  |-
 
  |-
−
  | Chunk Z
+
  | factor_previous_frame
−
  | VarInt
+
  | TAG_FLOAT
−
| Chunk Z coordinate of the player's position
 
−
|}
 
−
 
 
−
==== Update View Distance ====
 
−
 
 
−
Sent by the integrated singleplayer server when changing render distance.  Does not appear to be used by the dedicated server, as <code>view-distance</code> in server.properties cannot be changed at runtime.
 
−
 
 
−
{| class="wikitable" {{added}}
 
−
! Packet ID
 
−
! State
 
−
! Bound To
 
−
! Field Name
 
−
! Field Type
 
−
! Notes
 
 
  |-
 
  |-
−
  |rowspan="1"| 0x41
+
  | had_effect_last_tick
−
|rowspan="1"| Play
+
  | TAG_BOOLEAN
−
|rowspan="1"| Client
 
−
| View Distance
 
−
| VarInt
 
−
  | Render distance (2-32)
 
 
  |}
 
  |}
  
 
=== Serverbound ===
 
=== Serverbound ===
  
−
==== Set Difficulty ====
+
==== Chat Command ====
−
 
 
−
Must have at least op level 2 to use.  Appears to only be used on singleplayer; the difficulty buttons are still disabled in multiplayer.
 
−
 
 
−
{| class="wikitable" {{added}}
 
−
! Packet ID
 
−
! State
 
−
! Bound To
 
−
! Field Name
 
−
! Field Type
 
−
! Notes
 
−
|-
 
−
|rowspan="1"| 0x02
 
−
|rowspan="1"| Play
 
−
|rowspan="1"| Server
 
−
| New difficulty
 
−
| Byte
 
−
| 0: peaceful, 1: easy, 2: normal, 3: hard
 
−
|}
 
−
 
 
−
==== Click Window Button ====
 
−
 
 
−
{{Change|Was named Enchant Item}}
 
−
 
 
−
{{Change||Used more generally than just for enchanting in 1.14, although the code internally supported general use in earlier versions.}}
 
  
 
{| class="wikitable"
 
{| class="wikitable"
Line 2,701: Line 1,293:
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
−
  ! Field Name
+
  ! colspan="2"| Field Name
−
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
−
  |rowspan="2"| 0x07
+
  | rowspan="8"| 0x04
−
  |rowspan="2"| Play
+
  | rowspan="8"| Play
−
  |rowspan="2"| Server
+
  | rowspan="8"| Server
−
  | Window ID
+
  | colspan="2"| Command
−
  | Byte
+
  | colspan="2"| {{Type|String}} (256)
−
  | The ID of the {{change|enchantment table}} window sent by [[#Open Window|Open Window]]
+
  | colspan="2"| The command typed by the client.
−
  |-
+
|- {{removed}}
−
  | {{Change|Enchantment|Button ID}}
+
| colspan="2"| Timestamp
−
  | Byte
+
| colspan="2"| {{Type|Long}}
−
  | {{change|The position of the enchantment on the enchantment table window, starting with 0 as the topmost one|Meaning depends on window type; see below}}
+
| colspan="2"| The timestamp that the command was executed.
 +
  |- {{removed}}
 +
  | colspan="2"| Salt
 +
| colspan="2"| {{Type|Long}}
 +
| colspan="2"| The salt for the following argument signatures.
 +
|- {{removed}}
 +
  | colspan="2"| Array length
 +
| colspan="2"| {{Type|VarInt}}
 +
| colspan="2"| Number of entries in the following array. The maximum length in Notchian server is 8.
 +
|- {{removed}}
 +
| rowspan="2"| Array of argument signatures
 +
| Argument name
 +
| rowspan="2"| {{Type|Array}} (8)
 +
  | {{Type|String}} (16)
 +
| The name of the argument that is signed by the following signature.
 +
|- {{removed}}
 +
| Signature
 +
| {{Type|Byte Array}} (256)
 +
| The signature that verifies the argument. Always 256 bytes and is not length-prefixed.
 +
|- {{removed}}
 +
| colspan="2"| Message Count
 +
| colspan="2"| {{Type|VarInt}}
 +
| colspan="2"|
 +
|- {{removed}}
 +
| colspan="2"| Acknowledged
 +
| colspan="2"| {{Type|Fixed BitSet}} (20)
 +
| colspan="2"|
 
  |}
 
  |}
  
−
{| class="wikitable"
 
−
! Window type
 
−
! ID
 
−
! Meaning
 
−
|-
 
−
|rowspan="3"| Enchantment Table
 
−
| 0 || Topmost enchantment
 
−
|-
 
−
| 1 || Middle enchantment
 
−
|-
 
−
| 2 || Bottom enchantment
 
−
|-
 
−
|rowspan="4"| Lectern
 
−
| 1 || Unknown - maybe previous page?  (which does give a redstone output)
 
−
|-
 
−
| 2 || Unknown - maybe next page?
 
−
|-
 
−
| 3 || Take Book
 
−
|-
 
−
| 100? || Unknown - actual value is 100 + some parameter, so there may be multiple
 
−
|-
 
−
| Stonecutter
 
−
|colspan="2"| Recipe button number - 4*row + col.  Depends on the item.
 
−
|-
 
−
| Loom
 
−
|colspan="2"| Recipe button number - 4*row + col.  Depends on the item.
 
−
|}
 
−
 
−
==== Lock Difficulty ====
 
  
−
Must have at least op level 2 to use.  Appears to only be used on singleplayer; the difficulty buttons are still disabled in multiplayer.
+
==== Signed Chat Command ====
  
 
{| class="wikitable" {{added}}
 
{| class="wikitable" {{added}}
Line 2,753: Line 1,342:
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
−
  ! Field Name
+
  ! colspan="2"| Field Name
−
! Field Type
+
  ! colspan="2"| Field Type
−
! Notes
 
−
|-
 
−
|rowspan="1"| 0x0F
 
−
|rowspan="1"| Play
 
−
|rowspan="1"| Server
 
−
| Locked
 
−
| Boolean
 
−
|
 
−
|}
 
−
 
 
−
==== Recipe Book Data ====
 
−
 
 
−
{| class="wikitable"
 
−
! Packet ID
 
−
! State
 
−
! Bound To
 
−
  !colspan="2"| Field Name
 
−
! Field Type
 
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
−
  |rowspan="11"| {{change|0x1B|0x1D}}
+
  | rowspan="8"| 0x05
−
  |rowspan="11"| Play
+
  | rowspan="8"| Play
−
  |rowspan="11"| Server
+
  | rowspan="8"| Server
−
  |colspan="2"| Type
+
  | colspan="2"| Command
−
  | VarInt
+
  | colspan="2"| String(256)
−
  | Determines the format of the rest of the packet
+
  | The command typed by the client.
 
  |-
 
  |-
−
  ! Type
+
  | colspan="2"| Timestamp
−
  ! Field Name
+
  | colspan="2"| Long
−
  !
+
  | The timestamp that the command was executed. Milliseconds since the Unix epoch.
−
!
 
 
  |-
 
  |-
−
  | 0: Displayed Recipe
+
  | colspan="2"| Salt
−
  | Recipe ID
+
  | colspan="2"| Long
−
| Identifier
+
  | The salt for the following argument signatures.
−
  | A recipe ID
 
 
  |-
 
  |-
−
  |rowspan="8"| 1: Recipe Book States
+
  | colspan="2"| Argument Signature Count
−
  | Crafting Recipe Book Open
+
  | colspan="2"| VarInt
−
| Boolean
+
  | Number of elements in the following array. The maximum length in Notchian server is 8.
−
  | Whether the player has the crafting recipe book currently opened/active.
 
 
  |-
 
  |-
−
  | Crafting Recipe Filter Active
+
  | rowspan="2"| Argument Signatures
−
  | Boolean
+
| Name
−
  | Whether the player has the crafting recipe book filter option currently active.
+
| rowspan="2"| Array
 +
  | String(16)
 +
  | The name of the argument that is signed by the following signature.
 
  |-
 
  |-
−
  | Smelting Recipe Book Open
+
  | Signature
−
  | Boolean
+
  | ByteArray(256)
−
  | Whether the player has the smelting recipe book currently opened/active.
+
  | The signature that verifies the argument. Always 256 bytes and is not length-prefixed.
 
  |-
 
  |-
−
  | Smelting Recipe Filter Active
+
  | colspan="2"| Seen Messages Offset
−
| Boolean
+
  | colspan="2"| VarInt
−
| Whether the player has the smelting recipe book filter option currently active.
 
−
|- {{Added}}
 
−
| Blasting Recipe Book Open
 
−
| Boolean
 
−
| May be swapped with smoking recipe book.  Also, the notchian client appears to use the same value for both of those books currently.
 
−
|- {{Added}}
 
−
| Blasting Recipe Filter Active
 
−
| Boolean
 
−
  | May be swapped with smoking recipe book.  Also, the notchian client appears to use the same value for both of those books currently.
 
−
|- {{Added}}
 
−
| Smoking Recipe Book Open
 
−
| Boolean
 
 
  |
 
  |
−
  |- {{Added}}
+
  |-
−
  | Smoking Recipe Filter Active
+
  | colspan="2"| Seen Messages Acknowledged
−
  | Boolean
+
  | colspan="2"| Fixed BitSet(20)
 
  |
 
  |
 
  |}
 
  |}
  
−
The Recipe Book Status type is sent when one of the states changes.
+
==== Cookie Response (play) ====
−
 
 
−
==== Update Jigsaw Block ====
 
  
−
Sent when Done is pressed on the {{Minecraft Wiki|Jigsaw Block}} interface.
+
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" {{added}}
 
{| class="wikitable" {{added}}
Line 2,836: Line 1,392:
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
−
  ! Field Name
+
  ! colspan="2"| Field Name
−
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
−
  |rowspan="4"| 0x27
+
  | rowspan="4"| 0x11
−
  |rowspan="4"| Play
+
  | rowspan="4"| Play
−
  |rowspan="4"| Server
+
  | rowspan="4"| Server
−
  | Location
+
  | colspan="2"| Key
−
  | Position
+
  | colspan="2"| Identifier
−
  | Block entity location
+
  | The identifier of the cookie.
 
  |-
 
  |-
−
  | Attachment type
+
  | colspan="2"| Has Payload
−
| Identifier
+
  | colspan="2"| Boolean
−
|  
+
  | The payload is only present if the cookie exists on the client.
−
  |-
 
−
| Target pool
 
−
| Identifier
 
−
  |  
 
 
  |-
 
  |-
−
  | Final state
+
  | colspan="2"| Payload Length
−
| String
+
  | colspan="2"| Optional VarInt
−
  | "Turns into" on the GUI, <code>final_state</code> in NBT
+
  | Length of the following byte array.
−
  |}
 
−
 
 
−
==== Player Block Placement ====
 
−
 
 
−
{| class="wikitable"
 
 
  |-
 
  |-
−
! Packet ID
+
  | colspan="2"| Payload
−
! State
+
  | colspan="2"| Optional Byte Array (5120)
−
! Bound To
+
  | The data of the cookie, if any.
−
! Field Name
 
−
! Field Type
 
−
! Notes
 
−
|-
 
−
  |rowspan="9"| {{change|0x29|0x2C}}
 
−
  |rowspan="9"| Play
 
−
|rowspan="9"| Server
 
−
|{{removed}}| Location
 
−
|{{removed}}| Position
 
−
|{{removed}}| Block position
 
−
|- {{removed}}
 
−
| Face
 
−
| VarInt Enum
 
−
| The face on which the block is placed (as documented at [[#Player Digging|Player Digging]])
 
−
|-
 
−
| Hand
 
−
| VarInt Enum
 
−
  | The hand from which the block is placed; 0: main hand, 1: off hand
 
−
|- {{added}}
 
−
| Location
 
−
| Position
 
−
| Block position
 
−
|- {{added}}
 
−
| Face
 
−
| VarInt Enum
 
−
| The face on which the block is placed (as documented at [[#Player Digging|Player Digging]])
 
−
|-
 
−
| Cursor Position X
 
−
| Float
 
−
| The position of the crosshair on the block, from 0 to 1 increasing from west to east
 
−
|-
 
−
| Cursor Position Y
 
−
| Float
 
−
| The position of the crosshair on the block, from 0 to 1 increasing from bottom to top
 
−
|-
 
−
| Cursor Position Z
 
−
| Float
 
−
| The position of the crosshair on the block, from 0 to 1 increasing from north to south
 
−
|- {{added}}
 
−
| Inside block
 
−
| Boolean
 
−
| True when the player's head is inside of a block.
 
 
  |}
 
  |}
  
−
Upon placing a block, this packet is sent once.
+
==== Debug Sample Subscription ====
  
−
The Cursor Position X/Y/Z fields (also known as in-block coordinates) are calculated using raytracing. The unit corresponds to sixteen 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 0.0–0.5) or as a top slab (values 0.5-1.0). The Cursor Position Z should be 1.0 since the player was looking at the southernmost part of the block.
+
{| class="wikitable" {{added}}
−
 
 
−
{{Change||Inside block is true when a player's head (specifically eyes) are inside of a block's collision.  In 1.13 and later versions, collision is rather complicated and individual blocks can have multiple collision boxes.  For instance, a ring of vines has a non-colliding hole in the middle.  This value is only true when the player is directly in the box.  In practice, though, this value is only used by scaffolding to place in front of the player when sneaking inside of it (other blocks will place behind when you intersect with them -- try with glass for instance).}}
 
−
 
 
−
== Handshaking ==
 
−
 
 
−
=== Clientbound ===
 
−
 
 
−
There are no clientbound packets in the Handshaking state, since the protocol immediately switches to a different state after the client sends the first packet.
 
−
 
 
−
=== Serverbound ===
 
−
 
 
−
==== Handshake ====
 
−
 
 
−
This causes the server to switch into the target state.
 
−
 
 
−
{| class="wikitable"
 
 
  ! Packet ID
 
  ! Packet ID
 
  ! State
 
  ! State
Line 2,937: Line 1,426:
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
−
  |rowspan="4"| 0x00
+
  | 0x13
−
  |rowspan="4"| Handshaking
+
  | Play
−
  |rowspan="4"| Server
+
  | Server
−
  | Protocol Version
+
  | Sample Type
−
| VarInt
 
−
| See [[protocol version numbers]] (currently {{change|404|481}})
 
−
|-
 
−
| Server Address
 
−
| String
 
−
| Hostname or IP, e.g. localhost or 127.0.0.1, that was used to connect.  The Notchian server does not use this information.
 
−
|-
 
−
| Server Port
 
−
| Unsigned Short
 
−
| Default is 25565.  The Notchian server does not use this information.
 
−
|-
 
−
| Next State
 
 
  | VarInt Enum
 
  | VarInt Enum
−
  | 1 for [[#Status|status]], 2 for [[#Login|login]]
+
  | The type of debug sample to subscribe to. Currently always 0 (TICK_TIME).
 
  |}
 
  |}
−
 
−
== Status ==
 
−
 
−
=== Clientbound ===
 
−
 
−
No changes so far.
 
−
 
−
=== Serverbound ===
 
−
 
−
No changes so far.
 
−
 
−
== Login ==
 
−
 
−
=== Clientbound ===
 
−
 
−
No changes so far.
 
−
 
−
=== Serverbound ===
 
−
 
−
No changes so far.
 
−
 
  
 
[[Category:Minecraft Modern]]
 
[[Category:Minecraft Modern]]

Latest revision as of 22:19, 9 April 2024

This page documents the changes from the last stable Minecraft release (currently 1.20.4, protocol 765) to the current pre-release (currently 24w13a, protocol Snapshot 182). Note that this page contains bleeding-edge information that may not be completely or correctly documented.

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

Contents

Data types

No changes so far.

Packets

ID Packet name Documentation
Handshake serverbound
0x00 Handshake Current Pre
Login clientbound
0x01 Encryption Request Current Pre
0x05 Cookie Request (login) Pre
Login serverbound
0x04 Cookie Response (login) Pre
Configuration clientbound
0x00 Cookie Request (configuration) Pre
0x00 0x01 Clientbound Plugin Message (configuration) Current (unchanged)
0x01 0x02 Disconnect (configuration) Current (unchanged)
0x02 0x03 Finish Configuration Current (unchanged)
0x03 0x04 Clientbound Keep Alive (configuration) Current (unchanged)
0x04 0x05 Ping (configuration) Current (unchanged)
0x06 Reset Chat Pre
0x05 0x07 Registry Data Current Pre
0x06 0x08 Remove Resource Pack (configuration) Current (unchanged)
0x07 0x09 Add Resource Pack (configuration) Current (unchanged)
0x0A Store Cookie (configuration) Pre
0x0B Transfer (configuration) Pre
0x08 0x0C Feature Flags Current (unchanged)
0x09 0x0D Update Tags (configuration) Current (unchanged)
0x0E Clientbound Known Packs Pre
Configuration serverbound
0x01 Cookie Response (configuration) Pre
0x01 0x02 Serverbound Plugin Message (configuration) Current (unchanged)
0x02 0x03 Finish Configuration Current (unchanged)
0x03 0x04 Serverbound Keep Alive (configuration) Current (unchanged)
0x04 0x05 Pong (configuration) Current (unchanged)
0x05 0x06 Resource Pack Response (configuration) Current (unchanged)
0x07 Serverbound Known Packs Pre
Play clientbound
0x16 Cookie Request (Play) Pre
0x16 0x17 Set Cooldown Current (unchanged)
0x17 0x18 Chat Suggestions Current (unchanged)
0x18 0x19 Clientbound Plugin Message (play) Current (unchanged)
0x19 0x1A Damage Event Current (unchanged)
0x1B Debug Sample Pre
0x1A 0x1C Delete Message Current (unchanged)
0x1B 0x1D Disconnect (play) Current (unchanged)
0x1C 0x1E Disguised Chat Message Current (unchanged)
0x1D 0x1F Entity Event Current (unchanged)
0x1E 0x20 Explosion Current (unchanged)
0x1F 0x21 Unload Chunk Current (unchanged)
0x20 0x22 Game Event Current (unchanged)
0x21 0x23 Open Horse Screen Current (unchanged)
0x22 0x24 Hurt Animation Current (unchanged)
0x23 0x25 Initialize World Border Current (unchanged)
0x24 0x26 Clientbound Keep Alive (play) Current (unchanged)
0x25 0x27 Chunk Data and Update Light Current (unchanged)
0x26 0x28 World Event Current (unchanged)
0x27 0x29 Particle Current (unchanged)
0x28 0x2A Update Light Current (unchanged)
0x29 0x2B Login (play) Current Pre
0x2A 0x2C Map Data Current (unchanged)
0x2B 0x2D Merchant Offers Current (unchanged)
0x2C 0x2E Update Entity Position Current (unchanged)
0x2D 0x2F Update Entity Position and Rotation Current (unchanged)
0x2E 0x30 Update Entity Rotation Current (unchanged)
0x2F 0x31 Move Vehicle Current (unchanged)
0x30 0x32 Open Book Current (unchanged)
0x31 0x33 Open Screen Current (unchanged)
0x32 0x34 Open Sign Editor Current (unchanged)
0x33 0x35 Ping (play) Current (unchanged)
0x34 0x36 Ping Response (play) Current (unchanged)
0x35 0x37 Place Ghost Recipe Current (unchanged)
0x36 0x38 Player Abilities Current (unchanged)
0x37 0x39 Player Chat Message Current (unchanged)
0x38 0x3A End Combat Current (unchanged)
0x39 0x3B Enter Combat Current (unchanged)
0x3A 0x3C Combat Death Current (unchanged)
0x3B 0x3D Player Info Remove Current (unchanged)
0x3C 0x3E Player Info Update Current (unchanged)
0x3D 0x3F Look At Current (unchanged)
0x3E 0x40 Synchronize Player Position Current (unchanged)
0x3F 0x41 Update Recipe Book Current (unchanged)
0x40 0x42 Remove Entities Current (unchanged)
0x41 0x43 Remove Entity Effect Current (unchanged)
0x42 0x44 Reset Score Current (unchanged)
0x43 0x45 Remove Resource Pack (play) Current (unchanged)
0x44 0x46 Add Resource Pack (play) Current (unchanged)
0x45 0x47 Respawn Current Pre
0x46 0x48 Set Head Rotation Current (unchanged)
0x47 0x49 Update Section Blocks Current (unchanged)
0x48 0x4A Select Advancements Tab Current (unchanged)
0x49 0x4B Server Data Current (unchanged)
0x4A 0x4C Set Action Bar Text Current (unchanged)
0x4B 0x4D Set Border Center Current (unchanged)
0x4C 0x4E Set Border Lerp Size Current (unchanged)
0x4D 0x4F Set Border Size Current (unchanged)
0x4E 0x50 Set Border Warning Delay Current (unchanged)
0x4F 0x51 Set Border Warning Distance Current (unchanged)
0x50 0x52 Set Camera Current (unchanged)
0x51 0x53 Set Held Item Current (unchanged)
0x52 0x54 Set Center Chunk Current (unchanged)
0x53 0x55 Set Render Distance Current (unchanged)
0x54 0x56 Set Default Spawn Position Current (unchanged)
0x55 0x57 Display Objective Current (unchanged)
0x56 0x58 Set Entity Metadata Current (unchanged)
0x57 0x59 Link Entities Current (unchanged)
0x58 0x5A Set Entity Velocity Current (unchanged)
0x59 0x5B Set Equipment Current (unchanged)
0x5A 0x5C Set Experience Current (unchanged)
0x5B 0x5D Set Health Current (unchanged)
0x5C 0x5E Update Objectives Current (unchanged)
0x5D 0x5F Set Passengers Current (unchanged)
0x5E 0x60 Update Teams Current (unchanged)
0x5F 0x61 Update Score Current (unchanged)
0x60 0x62 Set Simulation Distance Current (unchanged)
0x61 0x63 Set Subtitle Text Current (unchanged)
0x62 0x64 Update Time Current (unchanged)
0x63 0x65 Set Title Text Current (unchanged)
0x64 0x66 Set Title Animation Times Current (unchanged)
0x65 0x67 Entity Sound Effect Current (unchanged)
0x66 0x68 Sound Effect Current (unchanged)
0x67 0x69 Start Configuration Current (unchanged)
0x68 0x6A Stop Sound Current (unchanged)
0x6B Store Cookie (Play) Pre
0x69 0x6C System Chat Message Current (unchanged)
0x6A 0x6D Set Tab List Header And Footer Current (unchanged)
0x6B 0x6E Tag Query Response Current (unchanged)
0x6C 0x6F Pickup Item Current (unchanged)
0x6D 0x70 Teleport Entity Current (unchanged)
0x6E 0x71 Set Ticking State Current (unchanged)
0x6F 0x72 Step Tick Current (unchanged)
0x73 Transfer (Play) Pre
0x70 0x74 Update Advancements Current (unchanged)
0x71 0x75 Update Attributes Current Pre
0x72 0x76 Entity Effect Current Pre
0x73 0x77 Update Recipes Current (unchanged)
0x74 0x78 Update Tags (play) Current (unchanged)
Play serverbound
0x04 Chat Command Current Pre
0x05 Signed Chat Command Pre
0x05 0x06 Chat Message Current (unchanged)
0x06 0x07 Player Session Current (unchanged)
0x07 0x08 Chunk Batch Received Current (unchanged)
0x08 0x09 Client Status Current (unchanged)
0x09 0x0A Client Information (play) Current (unchanged)
0x0A 0x0B Command Suggestions Request Current (unchanged)
0x0B 0x0C Acknowledge Configuration Current (unchanged)
0x0C 0x0D Click Container Button Current (unchanged)
0x0D 0x0E Click Container Current (unchanged)
0x0E 0x0F Close Container Current (unchanged)
0x0F 0x10 Change Container Slot State Current (unchanged)
0x11 Cookie Response (play) Pre
0x10 0x12 Serverbound Plugin Message (play) Current (unchanged)
0x13 Debug Sample Subscription Pre
0x11 0x14 Edit Book Current (unchanged)
0x12 0x15 Query Entity Tag Current (unchanged)
0x13 0x16 Interact Current (unchanged)
0x14 0x17 Jigsaw Generate Current (unchanged)
0x15 0x18 Serverbound Keep Alive (play) Current (unchanged)
0x16 0x19 Lock Difficulty Current (unchanged)
0x17 0x1A Set Player Position Current (unchanged)
0x18 0x1B Set Player Position and Rotation Current (unchanged)
0x19 0x1C Set Player Rotation Current (unchanged)
0x1A 0x1D Set Player On Ground Current (unchanged)
0x1B 0x1E Move Vehicle Current (unchanged)
0x1C 0x1F Paddle Boat Current (unchanged)
0x1D 0x20 Pick Item Current (unchanged)
0x1E 0x21 Ping Request (play) Current (unchanged)
0x1F 0x22 Place Recipe Current (unchanged)
0x20 0x23 Player Abilities Current (unchanged)
0x21 0x24 Player Action Current (unchanged)
0x22 0x25 Player Command Current (unchanged)
0x23 0x26 Player Input Current (unchanged)
0x24 0x27 Pong (play) Current (unchanged)
0x25 0x28 Change Recipe Book Settings Current (unchanged)
0x26 0x29 Set Seen Recipe Current (unchanged)
0x27 0x2A Rename Item Current (unchanged)
0x28 0x2B Resource Pack Response (play) Current (unchanged)
0x29 0x2C Seen Advancements Current (unchanged)
0x2A 0x2D Select Trade Current (unchanged)
0x2B 0x2E Set Beacon Effect Current (unchanged)
0x2C 0x2F Set Held Item Current (unchanged)
0x2D 0x30 Program Command Block Current (unchanged)
0x2E 0x31 Program Command Block Minecart Current (unchanged)
0x2F 0x32 Set Creative Mode Slot Current (unchanged)
0x30 0x33 Program Jigsaw Block Current (unchanged)
0x31 0x34 Program Structure Block Current (unchanged)
0x32 0x35 Update Sign Current (unchanged)
0x33 0x36 Swing Arm Current (unchanged)
0x34 0x37 Teleport To Entity Current (unchanged)
0x35 0x38 Use Item On Current (unchanged)
0x36 0x39 Use Item Current (unchanged)

New/modified data types

No changes so far.

Entity Metadata

Type Name Value Notes
0 Byte Byte
1 VarInt VarInt
2 VarLong VarLong
3 Float Float
4 String String
5 Text Component Text Component
6 Optional Text Component (Boolean, Optional Text Component) Text Component is present if the Boolean is set to true.
7 Slot Slot
8 Boolean Boolean
9 Rotations (Float, Float, Float) rotation on x, rotation on y, rotation on z
10 Position Position
11 Optional Position (Boolean, Optional Position) Position is present if the Boolean is set to true.
12 Direction VarInt Enum Down = 0, Up = 1, North = 2, South = 3, West = 4, East = 5
13 Optional UUID (Boolean, Optional UUID) UUID is present if the Boolean is set to true.
14 Block State VarInt An ID in the block state registry.
15 Optional Block State VarInt 0 for absent (air is unrepresentable); otherwise, an ID in the block state registry.
16 NBT NBT
17 Particle (VarInt, Varies) particle type (an ID in the minecraft:particle_type registry), particle data (See Particles.)
18 Particles (VarInt, Array of Particle) length of array, particle data (See directly above.)
18 19 Villager Data (VarInt, VarInt, VarInt) villager type, villager profession, level (See below.)
19 20 Optional VarInt VarInt 0 for absent; 1 + actual value otherwise. Used for entity IDs.
20 21 Pose VarInt Enum STANDING = 0, FALL_FLYING = 1, SLEEPING = 2, SWIMMING = 3, SPIN_ATTACK = 4, SNEAKING = 5, LONG_JUMPING = 6, DYING = 7, CROAKING = 8, USING_TONGUE = 9, SITTING = 10, ROARING = 11, SNIFFING = 12, EMERGING = 13, DIGGING = 14, SLIDING = 15, SHOOTING = 16, INHALING = 17
21 22 Cat Variant VarInt An ID in the minecraft:cat_variant registry.
22 23 Wolf Variant VarInt An ID in the minecraft:wolf_variant registry.
22 24 Frog Variant VarInt An ID in the minecraft:frog_variant registry.
23 25 Optional Global Position (Boolean, Optional Identifier, Optional Position) dimension identifier, position; only if the Boolean is set to true.
24 26 Painting Variant VarInt An ID in the minecraft:painting_variant registry.
25 27 Sniffer State VarInt Enum IDLING = 0, FEELING_HAPPY = 1, SCENTING = 2, SNIFFING = 3, SEARCHING = 4, DIGGING = 5, RISING = 6
26 28 Armadillo State VarInt Enum IDLE = 0, ROLLING = 1, SCARED = 2
26 29 Vector3 (Float, Float, Float) x, y, z
27 30 Quaternion (Float, Float, Float, Float) x, y, z, w

Living Entity

TODO: This has changed to use the PARTICLES attribute

Wolf

Extends Tameable Animal.Inherited entity Tameable Animal does not existInherited entity Tameable Animal does not exist

Index Type Meaning Default
0 Wolf Variant (22 23) Wolf Variant PALE
1 Boolean (8) Is begging false
2 VarInt (1) Collar color (values are those used with dyes) 14 (Red)
3 VarInt (1) Anger time 0

Armadillo

Extends Animal.

Index Type Meaning Default
17 Armadillo State (26 28) Armadillo State IDLE

Block Actions

No changes so far.

Inventories

No changes so far.

Plugin Channels

No changes so far.

Handshake

Serverbound

Handshake

This causes the server to switch into the target state.

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

Status

Clientbound

No changes so far.

Serverbound

No changes so far.

Login

Clientbound

Encryption Request

Packet ID State Bound To Field Name Field Type Notes
0x01 Login Client Server ID String (20) Appears to be empty.
Public Key Length VarInt Length of Public Key.
Public Key Byte Array The server's public key, in bytes.
Verify Token Length VarInt Length of Verify Token. Always 4 for Notchian servers.
Verify Token Byte Array A sequence of random bytes generated by the server.
Should Authenticate Boolean

Cookie Request (login)

Requests a cookie that was previously stored.

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

Serverbound

Cookie Response (login)

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

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

Configuration

Clientbound

Cookie Request (configuration)

Requests a cookie that was previously stored.

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

Reset Chat

Packet ID State Bound To Field Name Field Type Notes
0x06 Configuration Client no fields

Registry Data

Represents certain registries that are sent from the server and are applied on the client. The packet is sent for each of the following registries: minecraft:worldgen/biome, minecraft:chat_type, minecraft:trim_pattern, minecraft:trim_material, minecraft:wolf_variant, minecraft:dimension_type, minecraft:damage_type, and minecraft:banner_pattern.

Packet ID State Bound To Field Name Field Type Notes
0x07 Configuration Client Registry Codec NBT (Compound) See Registry Data.
Registry ID Identifier
Entry Count VarInt Number of entries in the following array.
Entries Entry ID Array Identifier
Has Data Boolean Whether the entry has any data following.
Data NBT Tag Entry data. Only present if Has Data is true.

Store Cookie (configuration)

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

Packet ID State Bound To Field Name Field Type Notes
0x0A Configuration Client Key Identifier The identifier of the cookie.
Payload ByteArray(5120) The data of the cookie.

Transfer (configuration)

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

Packet ID State Bound To Field Name Field Type Notes
0x0B Configuration Client Host String The hostname of IP of the server.
Port VarInt The port of the server.

Clientbound Known Packs

Packet ID State Bound To Field Name Field Type Notes
0x0E Configuration Client Known Pack Count VarInt The number of known packs in the following array.
Known Packs Namespace Array String
ID String
Version String

Serverbound

Cookie Response (configuration)

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

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

Serverbound Known Packs

ID 0x07, same structure as Clientbound Known Packs. If the client specifies a pack in this packet, the server should omit its contained data from Registry Data.

Play

Clientbound

Cookie Request (play)

Requests a cookie that was previously stored.

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

Debug Sample

Packet ID State Bound To Field Name Field Type Notes
0x1B Play Client Sample Length VarInt The length of the following array.
Sample Long Array TODO: What is the structure of the data in this array?
Sample Type VarInt Enum The type of sample data. Currently always 0 (TICK_TIME).

Login (play)

Packet ID State Bound To Field Name Field Type Notes
0x2B Play Client Entity ID Int The player's Entity ID (EID).
Is hardcore Boolean
Dimension Count VarInt Size of the following array.
Dimension Names Array of Identifier Identifiers for all dimensions on the server.
Max Players VarInt Was once used by the client to draw the player list, but now is ignored.
View Distance VarInt Render distance (2-32).
Simulation Distance VarInt The distance that the client will process specific things, such as entities.
Reduced Debug Info Boolean If true, a Notchian client shows reduced information on the debug screen. For servers in development, this should almost always be false.
Enable respawn screen Boolean Set to false when the doImmediateRespawn gamerule is true.
Do limited crafting Boolean Whether players can only craft recipes they have already unlocked. Currently unused by the client.
Dimension Type Identifier VarInt The ID of the type of dimension in the minecraft:dimension_type registry, defined by the Registry Data packet.
Dimension Name Identifier Name of the dimension being spawned into.
Hashed seed Long First 8 bytes of the SHA-256 hash of the world's seed. Used client side for biome noise
Game mode Unsigned Byte 0: Survival, 1: Creative, 2: Adventure, 3: Spectator.
Previous Game mode Byte -1: Undefined (null), 0: Survival, 1: Creative, 2: Adventure, 3: Spectator. The previous game mode. Vanilla client uses this for the debug (F3 + N & F3 + F4) game mode switch. (More information needed)
Is Debug Boolean True if the world is a debug mode world; debug mode worlds cannot be modified and have predefined blocks.
Is Flat Boolean True if the world is a superflat world; flat worlds have different void fog and a horizon at y=0 instead of y=63.
Has death location Boolean If true, then the next two fields are present.
Death dimension name Optional Identifier Name of the dimension the player died in.
Death location Optional Position The location that the player died at.
Portal cooldown VarInt The number of ticks until the player can use the portal again.
Enforces Secure Chat Boolean

Respawn

Packet ID State Bound To Field Name Field Type Notes
0x47 Play Client Dimension Type Identifier VarInt The ID of the type of dimension in the minecraft:dimension_type registry, defined by the Registry Data packet.
Dimension Name Identifier Name of the dimension being spawned into.
Hashed seed Long First 8 bytes of the SHA-256 hash of the world's seed. Used client side for biome noise
Game mode Unsigned Byte 0: Survival, 1: Creative, 2: Adventure, 3: Spectator.
Previous Game mode Byte -1: Undefined (null), 0: Survival, 1: Creative, 2: Adventure, 3: Spectator. The previous game mode. Vanilla client uses this for the debug (F3 + N & F3 + F4) game mode switch. (More information needed)
Is Debug Boolean True if the world is a debug mode world; debug mode worlds cannot be modified and have predefined blocks.
Is Flat Boolean True if the world is a superflat world; flat worlds have different void fog and a horizon at y=0 instead of y=63.
Has death location Boolean If true, then the next two fields are present.
Death dimension Name Optional Identifier Name of the dimension the player died in.
Death location Optional Position The location that the player died at.
Portal cooldown VarInt The number of ticks until the player can use the portal again.
Data kept Byte Bit mask. 0x01: Keep attributes, 0x02: Keep metadata. Tells which data should be kept on the client side once the player has respawned.

In the Notchian implementation, this is context dependent:

  • normal respawns (after death) keep no data;
  • exiting the end poem/credits keeps the attributes;
  • other dimension changes (portals or teleports) keep all data.

Store Cookie (play)

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

Packet ID State Bound To Field Name Field Type Notes
0x6B Play Client Key Identifier The identifier of the cookie.
Payload Length VarInt Length of the following byte array.
Payload Byte Array (5120) The data of the cookie.

Transfer (play)

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

Packet ID State Bound To Field Name Field Type Notes
0x73 Play Client Host String The hostname of IP of the server.
Port VarInt The port of the server.

Update Attributes

Sets attributes on the given entity.

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

Known Key values (see also Attribute#Modifiers):

These changed between 24w03b and 24w13a, TODO: Update this

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

Modifier Data structure:

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

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

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

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

Entity Effect

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

Within flags:

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

Factor Data

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

Serverbound

Chat Command

Packet ID State Bound To Field Name Field Type Notes
0x04 Play Server Command String (256) The command typed by the client.
Timestamp Long The timestamp that the command was executed.
Salt Long The salt for the following argument signatures.
Array length VarInt Number of entries in the following array. The maximum length in Notchian server is 8.
Array of argument signatures Argument name Array (8) String (16) The name of the argument that is signed by the following signature.
Signature Byte Array (256) The signature that verifies the argument. Always 256 bytes and is not length-prefixed.
Message Count VarInt
Acknowledged Fixed BitSet (20)


Signed Chat Command

Packet ID State Bound To Field Name Field Type Notes
0x05 Play Server Command String(256) The command typed by the client.
Timestamp Long The timestamp that the command was executed. Milliseconds since the Unix epoch.
Salt Long The salt for the following argument signatures.
Argument Signature Count VarInt Number of elements in the following array. The maximum length in Notchian server is 8.
Argument Signatures Name Array String(16) The name of the argument that is signed by the following signature.
Signature ByteArray(256) The signature that verifies the argument. Always 256 bytes and is not length-prefixed.
Seen Messages Offset VarInt
Seen Messages Acknowledged Fixed BitSet(20)

Cookie Response (play)

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

Packet ID State Bound To Field Name Field Type Notes
0x11 Play Server Key Identifier The identifier of the cookie.
Has Payload Boolean The payload is only present if the cookie exists on the client.
Payload Length Optional VarInt Length of the following byte array.
Payload Optional Byte Array (5120) The data of the cookie, if any.

Debug Sample Subscription

Packet ID State Bound To Field Name Field Type Notes
0x13 Play Server Sample Type VarInt Enum The type of debug sample to subscribe to. Currently always 0 (TICK_TIME).
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