Pre-release protocol: Difference between revisions

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imported>KennyTV
m (Add info on sender in chat packet)
imported>KennyTV
(Hint at changes in join packet (Vanilla NBT reponse: https://paste.gg/p/anonymous/348944750f884a1dac8311b079660702))
Line 401: Line 401:
  ! Notes
  ! Notes
  |-
  |-
  |rowspan="11"| 0x26
  |rowspan="12"| 0x26
  |rowspan="11"| Play
  |rowspan="12"| Play
  |rowspan="11"| Client
  |rowspan="12"| Client
  | Entity ID
  | Entity ID
  | Int
  | Int
Line 411: Line 411:
  | Unsigned Byte
  | Unsigned Byte
  | 0: Survival, 1: Creative, 2: Adventure, 3: Spectator. Bit 3 (0x8) is the hardcore flag.
  | 0: Survival, 1: Creative, 2: Adventure, 3: Spectator. Bit 3 (0x8) is the hardcore flag.
|- {{Added}}
| Unknown
| [[NBT|NBT Tag]]?
| Dimension registry?
  |-
  |-
  | Dimension
  | Dimension
  | Int Enum
  | {{change|Int Enum|Identifier}}
  | -1: Nether, 0: Overworld, 1: End; also, note that this is not a VarInt but instead a regular int.
  | {{change|-1: The Nether, 0: The Overworld, 1: The End}}
  |-
  |-
  | Hashed seed
  | Hashed seed

Revision as of 08:38, 21 May 2020

This page documents the changes from the last stable Minecraft release (currently 1.15.2, protocol 578) to the current pre-release (currently 20w21a, protocol 718). 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

The UUID type is now also sometimes encoded by the Notchian server as an array of four 32-bit integers, from most significant to least significant (matching the new format used on entity NBT). This representation is identical to using 16 bytes, two 64-bit integers, or one 128-bit integers.

Packets

ID Packet name Documentation
Handshaking serverbound
0x00 Handshake added Current }} removed unchanged | (unchanged) | Pre }} }}
Play clientbound
0x0F Chat Message (clientbound) added Current }} removed unchanged | (unchanged) | Pre }} }}
0x22 Chunk Data added Current }} removed unchanged | (unchanged) | Pre }} }}
0x26 Join Game added Current }} removed unchanged | (unchanged) | Pre }} }}
0x3B Respawn added Current }} removed unchanged | (unchanged) | Pre }} }}
0x4E}}{{#if:0x43|{{#if:0x4E| }}0x43}} Spawn Position added Current }} removed unchanged | (unchanged) | Pre }} }}
0x43}}{{#if:0x44|{{#if:0x43| }}0x44}} Display Scoreboard added Current }} removed unchanged | (unchanged) | Pre }} }}
0x44}}{{#if:0x45|{{#if:0x44| }}0x45}} Entity Metadata added Current }} removed unchanged | (unchanged) | Pre }} }}
0x45}}{{#if:0x46|{{#if:0x45| }}0x46}} Attach Entity added Current }} removed unchanged | (unchanged) | Pre }} }}
0x46}}{{#if:0x47|{{#if:0x46| }}0x47}} Entity Velocity added Current }} removed unchanged | (unchanged) | Pre }} }}
0x47}}{{#if:0x48|{{#if:0x47| }}0x48}} Entity Equipment added Current }} removed unchanged | (unchanged) | Pre }} }}
0x48}}{{#if:0x49|{{#if:0x48| }}0x49}} Set Experience added Current }} removed unchanged | (unchanged) | Pre }} }}
0x49}}{{#if:0x4A|{{#if:0x49| }}0x4A}} Update Health added Current }} removed unchanged | (unchanged) | Pre }} }}
0x4A}}{{#if:0x4B|{{#if:0x4A| }}0x4B}} Scoreboard Objective added Current }} removed unchanged | (unchanged) | Pre }} }}
0x4B}}{{#if:0x4C|{{#if:0x4B| }}0x4C}} Set Passengers added Current }} removed unchanged | (unchanged) | Pre }} }}
0x4C}}{{#if:0x4D|{{#if:0x4C| }}0x4D}} Teams added Current }} removed unchanged | (unchanged) | Pre }} }}
0x4D}}{{#if:0x4E|{{#if:0x4D| }}0x4E}} Update Score added Current }} removed unchanged | (unchanged) | Pre }} }}
0x59 Entity Properties added Current }} removed unchanged | (unchanged) | Pre }} }}
Play serverbound
0x0F Generate Structure added Current }} removed unchanged | (unchanged) | Pre }} }}
0x0F}}{{#if:0x10|{{#if:0x0F| }}0x10}} Keep Alive (serverbound) added Current }} removed unchanged | (unchanged) | Pre }} }}
0x10}}{{#if:0x11|{{#if:0x10| }}0x11}} Lock Difficulty added Current }} removed unchanged | (unchanged) | Pre }} }}
0x11}}{{#if:0x12|{{#if:0x11| }}0x12}} Player Position added Current }} removed unchanged | (unchanged) | Pre }} }}
0x12}}{{#if:0x13|{{#if:0x12| }}0x13}} Player Position And Rotation (serverbound) added Current }} removed unchanged | (unchanged) | Pre }} }}
0x13}}{{#if:0x14|{{#if:0x13| }}0x14}} Player Rotation added Current }} removed unchanged | (unchanged) | Pre }} }}
0x14}}{{#if:0x15|{{#if:0x14| }}0x15}} Player Movement added Current }} removed unchanged | (unchanged) | Pre }} }}
0x15}}{{#if:0x16|{{#if:0x15| }}0x16}} Vehicle Move (serverbound) added Current }} removed unchanged | (unchanged) | Pre }} }}
0x16}}{{#if:0x17|{{#if:0x16| }}0x17}} Steer Boat added Current }} removed unchanged | (unchanged) | Pre }} }}
0x17}}{{#if:0x18|{{#if:0x17| }}0x18}} Pick Item added Current }} removed unchanged | (unchanged) | Pre }} }}
0x18}}{{#if:0x19|{{#if:0x18| }}0x19}} Craft Recipe Request added Current }} removed unchanged | (unchanged) | Pre }} }}
0x19}}{{#if:0x1A|{{#if:0x19| }}0x1A}} Player Abilities (serverbound) added Current }} removed unchanged | (unchanged) | Pre }} }}
0x1A}}{{#if:0x1B|{{#if:0x1A| }}0x1B}} Player Digging added Current }} removed unchanged | (unchanged) | Pre }} }}
0x1B}}{{#if:0x1C|{{#if:0x1B| }}0x1C}} Entity Action added Current }} removed unchanged | (unchanged) | Pre }} }}
0x1C}}{{#if:0x1D|{{#if:0x1C| }}0x1D}} Steer Vehicle added Current }} removed unchanged | (unchanged) | Pre }} }}
0x1D}}{{#if:0x1E|{{#if:0x1D| }}0x1E}} Recipe Book Data added Current }} removed unchanged | (unchanged) | Pre }} }}
0x1E}}{{#if:0x1F|{{#if:0x1E| }}0x1F}} Name Item added Current }} removed unchanged | (unchanged) | Pre }} }}
0x1F}}{{#if:0x20|{{#if:0x1F| }}0x20}} Resource Pack Status added Current }} removed unchanged | (unchanged) | Pre }} }}
0x20}}{{#if:0x21|{{#if:0x20| }}0x21}} Advancement Tab added Current }} removed unchanged | (unchanged) | Pre }} }}
0x21}}{{#if:0x22|{{#if:0x21| }}0x22}} Select Trade added Current }} removed unchanged | (unchanged) | Pre }} }}
0x22}}{{#if:0x23|{{#if:0x22| }}0x23}} Set Beacon Effect added Current }} removed unchanged | (unchanged) | Pre }} }}
0x23}}{{#if:0x24|{{#if:0x23| }}0x24}} Held Item Change (serverbound) added Current }} removed unchanged | (unchanged) | Pre }} }}
0x24}}{{#if:0x25|{{#if:0x24| }}0x25}} Update Command Block added Current }} removed unchanged | (unchanged) | Pre }} }}
0x25}}{{#if:0x26|{{#if:0x25| }}0x26}} Update Command Block Minecart added Current }} removed unchanged | (unchanged) | Pre }} }}
0x26}}{{#if:0x27|{{#if:0x26| }}0x27}} Creative Inventory Action added Current }} removed unchanged | (unchanged) | Pre }} }}
0x27}}{{#if:0x28|{{#if:0x27| }}0x28}} Update Jigsaw Block added Current }} removed unchanged | (unchanged) | Pre }} }}
0x28}}{{#if:0x29|{{#if:0x28| }}0x29}} Update Structure Block added Current }} removed unchanged | (unchanged) | Pre }} }}
0x29}}{{#if:0x2A|{{#if:0x29| }}0x2A}} Update Sign added Current }} removed unchanged | (unchanged) | Pre }} }}
0x2A}}{{#if:0x2B|{{#if:0x2A| }}0x2B}} Animation (serverbound) added Current }} removed unchanged | (unchanged) | Pre }} }}
0x2B}}{{#if:0x2C|{{#if:0x2B| }}0x2C}} Spectate added Current }} removed unchanged | (unchanged) | Pre }} }}
0x2C}}{{#if:0x2D|{{#if:0x2C| }}0x2D}} Player Block Placement added Current }} removed unchanged | (unchanged) | Pre }} }}
0x2D}}{{#if:0x2E|{{#if:0x2D| }}0x2E}} Use Item added Current }} removed unchanged | (unchanged) | Pre }} }}
Login clientbound
0x02 Login Success added Current }} removed unchanged | (unchanged) | Pre }} }}

New/modified data types

No changes so far.

Entity Metadata

{{#vardefine:meta_prerelease|1}}

FishingHook

{{#if:FishingHook||Must specify the current entity ID for Template:Metadata inherit}} {{#vardefine:meta_current_entity|FishingHook}}

{{#if:{{#var:meta_prerelease}}| 

   {{#if:Entity
       | {{#if:
           | Extends {{#if:[[{{#varexists:meta_Entity|Entity metadata}}#Entity|Entity]]|[[{{#varexists:meta_Entity|Entity metadata}}#Entity|Entity]]}}{{#if:[[{{#varexists:meta_{{{pre_inherits}}}|Entity metadata}}#{{{pre_inherits}}}|{{{pre_inherits}}}]]|{{#if:[[{{#varexists:meta_Entity|Entity metadata}}#Entity|Entity]]| }}[[{{#varexists:meta_{{{pre_inherits}}}|Entity metadata}}#{{{pre_inherits}}}|{{{pre_inherits}}}]]}}.
           | Extends [[{{#varexists:meta_Entity|Entity metadata}}#Entity|Entity]].
       }}{{#if:7
           | {{#vardefine:meta_FishingHook|7}}
           {{#if:{{#varexists:meta_Entity}}|start_at in use when inherited entity Entity exists}}
           | {{#vardefine:meta_FishingHook|{{#var:meta_Entity|0}}}}
           {{#if:{{#varexists:meta_Entity}}||Inherited entity Entity does not exist}}
       }}{{#if:7
           | {{#vardefine:meta_pre_FishingHook|7}}
           {{#if:{{#varexists:meta_Entity}}|start_at in use when inherited entity Entity exists}}
           | {{#vardefine:meta_pre_FishingHook|{{#var:meta_pre_Entity|0}}}}
           {{#if:{{#varexists:meta_Entity}}||Inherited entity Entity does not exist}}
       }}
       | The base class.
       {{#vardefine:meta_FishingHook|7}}
       {{#vardefine:meta_pre_FishingHook|7}}
   }}

| 

   {{#if:Entity
       | Extends Entity.
       {{#if:7
           | {{#vardefine:meta_FishingHook|7}}
           {{#if:{{#varexists:meta_Entity}}|start_at in use when inherited entity Entity exists}}
           | {{#vardefine:meta_FishingHook|{{#var:meta_Entity|0}}}}
           {{#if:{{#varexists:meta_Entity}}||Inherited entity Entity does not exist}}
       }}
       | The base class.
       {{#vardefine:meta_FishingHook|7}}
   }}

}}

Index Type Meaning Default 
   {{#vardefine:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:pre_meta|{{#var:meta_pre_{{#var:meta_current_entity}}}}}}
   {{#switch:
added = 
       {{#if:|}}{{#if:{{#var:pre_meta}}|{{#if:| }}{{#var:pre_meta}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
removed = 
       {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:|{{#if:{{#var:cur_meta}}| }}}}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
= 
       {{#ifeq: {{#var:cur_meta}}|{{#var:pre_meta}} | {{#var:cur_meta}} | {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:{{#var:pre_meta}}|{{#if:{{#var:cur_meta}}| }}{{#var:pre_meta}}}} }}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
#default = 
       Invalid parameter to Template:Metadata id 
   }}

   {{#vardefineecho:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
   {{#ifeq: |||Template:Metadata id must be used as {{Metadata id|}} (with an empty first parameter) for technical reasons}}

}}

VarInt Hooked entity id + 1, or 0 if there is no hooked entity 0 
   {{#vardefine:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:pre_meta|{{#var:meta_pre_{{#var:meta_current_entity}}}}}}
   {{#switch: added
added = 
       {{#if:|}}{{#if:{{#var:pre_meta}}|{{#if:| }}{{#var:pre_meta}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
removed = 
       {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:|{{#if:{{#var:cur_meta}}| }}}}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
= 
       {{#ifeq: {{#var:cur_meta}}|{{#var:pre_meta}} | {{#var:cur_meta}} | {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:{{#var:pre_meta}}|{{#if:{{#var:cur_meta}}| }}{{#var:pre_meta}}}} }}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
#default = 
       Invalid parameter to Template:Metadata id added
   }}

   {{#vardefineecho:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
   {{#ifeq: added|||Template:Metadata id must be used as {{Metadata id|}} (with an empty first parameter) for technical reasons}}

}}

Boolean Is catchable False

Abstract Arrow

{{#if:Abstract Arrow||Must specify the current entity ID for Template:Metadata inherit}} {{#vardefine:meta_current_entity|Abstract Arrow}}

{{#if:{{#var:meta_prerelease}}| 

   {{#if:Entity
       | {{#if:
           | Extends {{#if:[[{{#varexists:meta_Entity|Entity metadata}}#Entity|Entity]]|[[{{#varexists:meta_Entity|Entity metadata}}#Entity|Entity]]}}{{#if:[[{{#varexists:meta_{{{pre_inherits}}}|Entity metadata}}#{{{pre_inherits}}}|{{{pre_inherits}}}]]|{{#if:[[{{#varexists:meta_Entity|Entity metadata}}#Entity|Entity]]| }}[[{{#varexists:meta_{{{pre_inherits}}}|Entity metadata}}#{{{pre_inherits}}}|{{{pre_inherits}}}]]}}.
           | Extends [[{{#varexists:meta_Entity|Entity metadata}}#Entity|Entity]].
       }}{{#if:7
           | {{#vardefine:meta_Abstract Arrow|7}}
           {{#if:{{#varexists:meta_Entity}}|start_at in use when inherited entity Entity exists}}
           | {{#vardefine:meta_Abstract Arrow|{{#var:meta_Entity|0}}}}
           {{#if:{{#varexists:meta_Entity}}||Inherited entity Entity does not exist}}
       }}{{#if:7
           | {{#vardefine:meta_pre_Abstract Arrow|7}}
           {{#if:{{#varexists:meta_Entity}}|start_at in use when inherited entity Entity exists}}
           | {{#vardefine:meta_pre_Abstract Arrow|{{#var:meta_pre_Entity|0}}}}
           {{#if:{{#varexists:meta_Entity}}||Inherited entity Entity does not exist}}
       }}
       | The base class.
       {{#vardefine:meta_Abstract Arrow|7}}
       {{#vardefine:meta_pre_Abstract Arrow|7}}
   }}

| 

   {{#if:Entity
       | Extends Entity.
       {{#if:7
           | {{#vardefine:meta_Abstract Arrow|7}}
           {{#if:{{#varexists:meta_Entity}}|start_at in use when inherited entity Entity exists}}
           | {{#vardefine:meta_Abstract Arrow|{{#var:meta_Entity|0}}}}
           {{#if:{{#varexists:meta_Entity}}||Inherited entity Entity does not exist}}
       }}
       | The base class.
       {{#vardefine:meta_Abstract Arrow|7}}
   }}

}}

Abstract base class for Tipped Arrow (which is used for regular arrows as well as tipped ones) and Spectral Arrow.

Index Type Meaning Default
{{#if:{{#var:meta_prerelease}}| 
   {{#vardefine:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:pre_meta|{{#var:meta_pre_{{#var:meta_current_entity}}}}}}
   {{#switch:
added = 
       {{#if:|}}{{#if:{{#var:pre_meta}}|{{#if:| }}{{#var:pre_meta}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
removed = 
       {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:|{{#if:{{#var:cur_meta}}| }}}}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
= 
       {{#ifeq: {{#var:cur_meta}}|{{#var:pre_meta}} | {{#var:cur_meta}} | {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:{{#var:pre_meta}}|{{#if:{{#var:cur_meta}}| }}{{#var:pre_meta}}}} }}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
#default = 
       Invalid parameter to Template:Metadata id 
   }}

   {{#vardefineecho:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
   {{#ifeq: |||Template:Metadata id must be used as {{Metadata id|}} (with an empty first parameter) for technical reasons}}

}}

Byte Bit mask Meaning 0
0x01 Is critical
0x02 Is noclip (used by loyalty tridents when returning) 
   {{#vardefine:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:pre_meta|{{#var:meta_pre_{{#var:meta_current_entity}}}}}}
   {{#switch: removed
added = 
       {{#if:|}}{{#if:{{#var:pre_meta}}|{{#if:| }}{{#var:pre_meta}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
removed = 
       {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:|{{#if:{{#var:cur_meta}}| }}}}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
= 
       {{#ifeq: {{#var:cur_meta}}|{{#var:pre_meta}} | {{#var:cur_meta}} | {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:{{#var:pre_meta}}|{{#if:{{#var:cur_meta}}| }}{{#var:pre_meta}}}} }}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
#default = 
       Invalid parameter to Template:Metadata id removed
   }}

   {{#vardefineecho:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
   {{#ifeq: removed|||Template:Metadata id must be used as {{Metadata id|}} (with an empty first parameter) for technical reasons}}

}}

OptUUID Unused Empty 
   {{#vardefine:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:pre_meta|{{#var:meta_pre_{{#var:meta_current_entity}}}}}}
   {{#switch:
added = 
       {{#if:|}}{{#if:{{#var:pre_meta}}|{{#if:| }}{{#var:pre_meta}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
removed = 
       {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:|{{#if:{{#var:cur_meta}}| }}}}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
= 
       {{#ifeq: {{#var:cur_meta}}|{{#var:pre_meta}} | {{#var:cur_meta}} | {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:{{#var:pre_meta}}|{{#if:{{#var:cur_meta}}| }}{{#var:pre_meta}}}} }}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
#default = 
       Invalid parameter to Template:Metadata id 
   }}

   {{#vardefineecho:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
   {{#ifeq: |||Template:Metadata id must be used as {{Metadata id|}} (with an empty first parameter) for technical reasons}}

}}

Byte Peircing level 0

Tipped Arrow

{{#if:Tipped Arrow||Must specify the current entity ID for Template:Metadata inherit}} {{#vardefine:meta_current_entity|Tipped Arrow}}

{{#if:{{#var:meta_prerelease}}| 

   {{#if:Abstract Arrow
       | {{#if:
           | Extends {{#if:[[{{#varexists:meta_Abstract Arrow|Entity metadata}}#Abstract Arrow|Abstract Arrow]]|[[{{#varexists:meta_Abstract Arrow|Entity metadata}}#Abstract Arrow|Abstract Arrow]]}}{{#if:[[{{#varexists:meta_{{{pre_inherits}}}|Entity metadata}}#{{{pre_inherits}}}|{{{pre_inherits}}}]]|{{#if:[[{{#varexists:meta_Abstract Arrow|Entity metadata}}#Abstract Arrow|Abstract Arrow]]| }}[[{{#varexists:meta_{{{pre_inherits}}}|Entity metadata}}#{{{pre_inherits}}}|{{{pre_inherits}}}]]}}.
           | Extends [[{{#varexists:meta_Abstract Arrow|Entity metadata}}#Abstract Arrow|Abstract Arrow]].
       }}{{#if:
           | {{#vardefine:meta_Tipped Arrow|{{{start_at}}}}}
           {{#if:{{#varexists:meta_Abstract Arrow}}|start_at in use when inherited entity Abstract Arrow exists}}
           | {{#vardefine:meta_Tipped Arrow|{{#var:meta_Abstract Arrow|0}}}}
           {{#if:{{#varexists:meta_Abstract Arrow}}||Inherited entity Abstract Arrow does not exist}}
       }}{{#if:
           | {{#vardefine:meta_pre_Tipped Arrow|}}
           {{#if:{{#varexists:meta_Abstract Arrow}}|start_at in use when inherited entity Abstract Arrow exists}}
           | {{#vardefine:meta_pre_Tipped Arrow|{{#var:meta_pre_Abstract Arrow|0}}}}
           {{#if:{{#varexists:meta_Abstract Arrow}}||Inherited entity Abstract Arrow does not exist}}
       }}
       | The base class.
       {{#vardefine:meta_Tipped Arrow|0}}
       {{#vardefine:meta_pre_Tipped Arrow|0}}
   }}

| 

   {{#if:Abstract Arrow
       | Extends Abstract Arrow.
       {{#if:
           | {{#vardefine:meta_Tipped Arrow|{{{start_at}}}}}
           {{#if:{{#varexists:meta_Abstract Arrow}}|start_at in use when inherited entity Abstract Arrow exists}}
           | {{#vardefine:meta_Tipped Arrow|{{#var:meta_Abstract Arrow|0}}}}
           {{#if:{{#varexists:meta_Abstract Arrow}}||Inherited entity Abstract Arrow does not exist}}
       }}
       | The base class.
       {{#vardefine:meta_Tipped Arrow|0}}
   }}

}}

Used for both tipped and regular arrows. If not tipped, then color is set to -1 and no tipped arrow particles are used.

Index Type Meaning Default 
   {{#vardefine:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:pre_meta|{{#var:meta_pre_{{#var:meta_current_entity}}}}}}
   {{#switch:
added = 
       {{#if:|}}{{#if:{{#var:pre_meta}}|{{#if:| }}{{#var:pre_meta}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
removed = 
       {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:|{{#if:{{#var:cur_meta}}| }}}}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
= 
       {{#ifeq: {{#var:cur_meta}}|{{#var:pre_meta}} | {{#var:cur_meta}} | {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:{{#var:pre_meta}}|{{#if:{{#var:cur_meta}}| }}{{#var:pre_meta}}}} }}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
#default = 
       Invalid parameter to Template:Metadata id 
   }}

   {{#vardefineecho:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
   {{#ifeq: |||Template:Metadata id must be used as {{Metadata id|}} (with an empty first parameter) for technical reasons}}

}}

VarInt Color (-1 for no particles) -1

Spectral Arrow

{{#if:Spectral Arrow||Must specify the current entity ID for Template:Metadata inherit}} {{#vardefine:meta_current_entity|Spectral Arrow}}

{{#if:{{#var:meta_prerelease}}| 

   {{#if:Abstract Arrow
       | {{#if:
           | Extends {{#if:[[{{#varexists:meta_Abstract Arrow|Entity metadata}}#Abstract Arrow|Abstract Arrow]]|[[{{#varexists:meta_Abstract Arrow|Entity metadata}}#Abstract Arrow|Abstract Arrow]]}}{{#if:[[{{#varexists:meta_{{{pre_inherits}}}|Entity metadata}}#{{{pre_inherits}}}|{{{pre_inherits}}}]]|{{#if:[[{{#varexists:meta_Abstract Arrow|Entity metadata}}#Abstract Arrow|Abstract Arrow]]| }}[[{{#varexists:meta_{{{pre_inherits}}}|Entity metadata}}#{{{pre_inherits}}}|{{{pre_inherits}}}]]}}.
           | Extends [[{{#varexists:meta_Abstract Arrow|Entity metadata}}#Abstract Arrow|Abstract Arrow]].
       }}{{#if:
           | {{#vardefine:meta_Spectral Arrow|{{{start_at}}}}}
           {{#if:{{#varexists:meta_Abstract Arrow}}|start_at in use when inherited entity Abstract Arrow exists}}
           | {{#vardefine:meta_Spectral Arrow|{{#var:meta_Abstract Arrow|0}}}}
           {{#if:{{#varexists:meta_Abstract Arrow}}||Inherited entity Abstract Arrow does not exist}}
       }}{{#if:
           | {{#vardefine:meta_pre_Spectral Arrow|}}
           {{#if:{{#varexists:meta_Abstract Arrow}}|start_at in use when inherited entity Abstract Arrow exists}}
           | {{#vardefine:meta_pre_Spectral Arrow|{{#var:meta_pre_Abstract Arrow|0}}}}
           {{#if:{{#varexists:meta_Abstract Arrow}}||Inherited entity Abstract Arrow does not exist}}
       }}
       | The base class.
       {{#vardefine:meta_Spectral Arrow|0}}
       {{#vardefine:meta_pre_Spectral Arrow|0}}
   }}

| 

   {{#if:Abstract Arrow
       | Extends Abstract Arrow.
       {{#if:
           | {{#vardefine:meta_Spectral Arrow|{{{start_at}}}}}
           {{#if:{{#varexists:meta_Abstract Arrow}}|start_at in use when inherited entity Abstract Arrow exists}}
           | {{#vardefine:meta_Spectral Arrow|{{#var:meta_Abstract Arrow|0}}}}
           {{#if:{{#varexists:meta_Abstract Arrow}}||Inherited entity Abstract Arrow does not exist}}
       }}
       | The base class.
       {{#vardefine:meta_Spectral Arrow|0}}
   }}

}}

No additional metadata.

Trident

{{#if:Trident||Must specify the current entity ID for Template:Metadata inherit}} {{#vardefine:meta_current_entity|Trident}}

{{#if:{{#var:meta_prerelease}}| 

   {{#if:Abstract Arrow
       | {{#if:
           | Extends {{#if:[[{{#varexists:meta_Abstract Arrow|Entity metadata}}#Abstract Arrow|Abstract Arrow]]|[[{{#varexists:meta_Abstract Arrow|Entity metadata}}#Abstract Arrow|Abstract Arrow]]}}{{#if:[[{{#varexists:meta_{{{pre_inherits}}}|Entity metadata}}#{{{pre_inherits}}}|{{{pre_inherits}}}]]|{{#if:[[{{#varexists:meta_Abstract Arrow|Entity metadata}}#Abstract Arrow|Abstract Arrow]]| }}[[{{#varexists:meta_{{{pre_inherits}}}|Entity metadata}}#{{{pre_inherits}}}|{{{pre_inherits}}}]]}}.
           | Extends [[{{#varexists:meta_Abstract Arrow|Entity metadata}}#Abstract Arrow|Abstract Arrow]].
       }}{{#if:
           | {{#vardefine:meta_Trident|{{{start_at}}}}}
           {{#if:{{#varexists:meta_Abstract Arrow}}|start_at in use when inherited entity Abstract Arrow exists}}
           | {{#vardefine:meta_Trident|{{#var:meta_Abstract Arrow|0}}}}
           {{#if:{{#varexists:meta_Abstract Arrow}}||Inherited entity Abstract Arrow does not exist}}
       }}{{#if:
           | {{#vardefine:meta_pre_Trident|}}
           {{#if:{{#varexists:meta_Abstract Arrow}}|start_at in use when inherited entity Abstract Arrow exists}}
           | {{#vardefine:meta_pre_Trident|{{#var:meta_pre_Abstract Arrow|0}}}}
           {{#if:{{#varexists:meta_Abstract Arrow}}||Inherited entity Abstract Arrow does not exist}}
       }}
       | The base class.
       {{#vardefine:meta_Trident|0}}
       {{#vardefine:meta_pre_Trident|0}}
   }}

| 

   {{#if:Abstract Arrow
       | Extends Abstract Arrow.
       {{#if:
           | {{#vardefine:meta_Trident|{{{start_at}}}}}
           {{#if:{{#varexists:meta_Abstract Arrow}}|start_at in use when inherited entity Abstract Arrow exists}}
           | {{#vardefine:meta_Trident|{{#var:meta_Abstract Arrow|0}}}}
           {{#if:{{#varexists:meta_Abstract Arrow}}||Inherited entity Abstract Arrow does not exist}}
       }}
       | The base class.
       {{#vardefine:meta_Trident|0}}
   }}

}}

Index Type Meaning Default 
   {{#vardefine:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:pre_meta|{{#var:meta_pre_{{#var:meta_current_entity}}}}}}
   {{#switch:
added = 
       {{#if:|}}{{#if:{{#var:pre_meta}}|{{#if:| }}{{#var:pre_meta}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
removed = 
       {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:|{{#if:{{#var:cur_meta}}| }}}}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
= 
       {{#ifeq: {{#var:cur_meta}}|{{#var:pre_meta}} | {{#var:cur_meta}} | {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:{{#var:pre_meta}}|{{#if:{{#var:cur_meta}}| }}{{#var:pre_meta}}}} }}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
#default = 
       Invalid parameter to Template:Metadata id 
   }}

   {{#vardefineecho:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
   {{#ifeq: |||Template:Metadata id must be used as {{Metadata id|}} (with an empty first parameter) for technical reasons}}

}}

VarInt Loyalty level (enchantment) 0 
   {{#vardefine:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:pre_meta|{{#var:meta_pre_{{#var:meta_current_entity}}}}}}
   {{#switch:
added = 
       {{#if:|}}{{#if:{{#var:pre_meta}}|{{#if:| }}{{#var:pre_meta}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
removed = 
       {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:|{{#if:{{#var:cur_meta}}| }}}}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
= 
       {{#ifeq: {{#var:cur_meta}}|{{#var:pre_meta}} | {{#var:cur_meta}} | {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:{{#var:pre_meta}}|{{#if:{{#var:cur_meta}}| }}{{#var:pre_meta}}}} }}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
#default = 
       Invalid parameter to Template:Metadata id 
   }}

   {{#vardefineecho:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
   {{#ifeq: |||Template:Metadata id must be used as {{Metadata id|}} (with an empty first parameter) for technical reasons}}

}}

Boolean Has enchantment glint False

Strider

{{#if:Strider||Must specify the current entity ID for Template:Metadata inherit}} {{#vardefine:meta_current_entity|Strider}}

{{#if:{{#var:meta_prerelease}}| 

   {{#if:Animal
       | {{#if:
           | Extends {{#if:[[{{#varexists:meta_Animal|Entity metadata}}#Animal|Animal]]|[[{{#varexists:meta_Animal|Entity metadata}}#Animal|Animal]]}}{{#if:[[{{#varexists:meta_{{{pre_inherits}}}|Entity metadata}}#{{{pre_inherits}}}|{{{pre_inherits}}}]]|{{#if:[[{{#varexists:meta_Animal|Entity metadata}}#Animal|Animal]]| }}[[{{#varexists:meta_{{{pre_inherits}}}|Entity metadata}}#{{{pre_inherits}}}|{{{pre_inherits}}}]]}}.
           | Extends [[{{#varexists:meta_Animal|Entity metadata}}#Animal|Animal]].
       }}{{#if:16
           | {{#vardefine:meta_Strider|16}}
           {{#if:{{#varexists:meta_Animal}}|start_at in use when inherited entity Animal exists}}
           | {{#vardefine:meta_Strider|{{#var:meta_Animal|0}}}}
           {{#if:{{#varexists:meta_Animal}}||Inherited entity Animal does not exist}}
       }}{{#if:16
           | {{#vardefine:meta_pre_Strider|16}}
           {{#if:{{#varexists:meta_Animal}}|start_at in use when inherited entity Animal exists}}
           | {{#vardefine:meta_pre_Strider|{{#var:meta_pre_Animal|0}}}}
           {{#if:{{#varexists:meta_Animal}}||Inherited entity Animal does not exist}}
       }}
       | The base class.
       {{#vardefine:meta_Strider|16}}
       {{#vardefine:meta_pre_Strider|16}}
   }}

| 

   {{#if:Animal
       | Extends Animal.
       {{#if:16
           | {{#vardefine:meta_Strider|16}}
           {{#if:{{#varexists:meta_Animal}}|start_at in use when inherited entity Animal exists}}
           | {{#vardefine:meta_Strider|{{#var:meta_Animal|0}}}}
           {{#if:{{#varexists:meta_Animal}}||Inherited entity Animal does not exist}}
       }}
       | The base class.
       {{#vardefine:meta_Strider|16}}
   }}

}}

Index Type Meaning Default 
   {{#vardefine:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:pre_meta|{{#var:meta_pre_{{#var:meta_current_entity}}}}}}
   {{#switch:
added = 
       {{#if:|}}{{#if:{{#var:pre_meta}}|{{#if:| }}{{#var:pre_meta}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
removed = 
       {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:|{{#if:{{#var:cur_meta}}| }}}}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
= 
       {{#ifeq: {{#var:cur_meta}}|{{#var:pre_meta}} | {{#var:cur_meta}} | {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:{{#var:pre_meta}}|{{#if:{{#var:cur_meta}}| }}{{#var:pre_meta}}}} }}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
#default = 
       Invalid parameter to Template:Metadata id 
   }}

   {{#vardefineecho:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
   {{#ifeq: |||Template:Metadata id must be used as {{Metadata id|}} (with an empty first parameter) for technical reasons}}

}}

VarInt Total time to "boost" with warped fungus on a stick for 0 
   {{#vardefine:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:pre_meta|{{#var:meta_pre_{{#var:meta_current_entity}}}}}}
   {{#switch:
added = 
       {{#if:|}}{{#if:{{#var:pre_meta}}|{{#if:| }}{{#var:pre_meta}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
removed = 
       {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:|{{#if:{{#var:cur_meta}}| }}}}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
= 
       {{#ifeq: {{#var:cur_meta}}|{{#var:pre_meta}} | {{#var:cur_meta}} | {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:{{#var:pre_meta}}|{{#if:{{#var:cur_meta}}| }}{{#var:pre_meta}}}} }}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
#default = 
       Invalid parameter to Template:Metadata id 
   }}

   {{#vardefineecho:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
   {{#ifeq: |||Template:Metadata id must be used as {{Metadata id|}} (with an empty first parameter) for technical reasons}}

}}

Boolean Should display name tag (true unless riding a vehicle or on or in a block tagged with strider_warm_blocks (default: lava)) false 
   {{#vardefine:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:pre_meta|{{#var:meta_pre_{{#var:meta_current_entity}}}}}}
   {{#switch:
added = 
       {{#if:|}}{{#if:{{#var:pre_meta}}|{{#if:| }}{{#var:pre_meta}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
removed = 
       {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:|{{#if:{{#var:cur_meta}}| }}}}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
= 
       {{#ifeq: {{#var:cur_meta}}|{{#var:pre_meta}} | {{#var:cur_meta}} | {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:{{#var:pre_meta}}|{{#if:{{#var:cur_meta}}| }}{{#var:pre_meta}}}} }}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
#default = 
       Invalid parameter to Template:Metadata id 
   }}

   {{#vardefineecho:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
   {{#ifeq: |||Template:Metadata id must be used as {{Metadata id|}} (with an empty first parameter) for technical reasons}}

}}

Boolean Has saddle false

Hoglin

{{#if:Hoglin||Must specify the current entity ID for Template:Metadata inherit}} {{#vardefine:meta_current_entity|Hoglin}}

{{#if:{{#var:meta_prerelease}}| 

   {{#if:Animal
       | {{#if:
           | Extends {{#if:[[{{#varexists:meta_Animal|Entity metadata}}#Animal|Animal]]|[[{{#varexists:meta_Animal|Entity metadata}}#Animal|Animal]]}}{{#if:[[{{#varexists:meta_{{{pre_inherits}}}|Entity metadata}}#{{{pre_inherits}}}|{{{pre_inherits}}}]]|{{#if:[[{{#varexists:meta_Animal|Entity metadata}}#Animal|Animal]]| }}[[{{#varexists:meta_{{{pre_inherits}}}|Entity metadata}}#{{{pre_inherits}}}|{{{pre_inherits}}}]]}}.
           | Extends [[{{#varexists:meta_Animal|Entity metadata}}#Animal|Animal]].
       }}{{#if:16
           | {{#vardefine:meta_Hoglin|16}}
           {{#if:{{#varexists:meta_Animal}}|start_at in use when inherited entity Animal exists}}
           | {{#vardefine:meta_Hoglin|{{#var:meta_Animal|0}}}}
           {{#if:{{#varexists:meta_Animal}}||Inherited entity Animal does not exist}}
       }}{{#if:16
           | {{#vardefine:meta_pre_Hoglin|16}}
           {{#if:{{#varexists:meta_Animal}}|start_at in use when inherited entity Animal exists}}
           | {{#vardefine:meta_pre_Hoglin|{{#var:meta_pre_Animal|0}}}}
           {{#if:{{#varexists:meta_Animal}}||Inherited entity Animal does not exist}}
       }}
       | The base class.
       {{#vardefine:meta_Hoglin|16}}
       {{#vardefine:meta_pre_Hoglin|16}}
   }}

| 

   {{#if:Animal
       | Extends Animal.
       {{#if:16
           | {{#vardefine:meta_Hoglin|16}}
           {{#if:{{#varexists:meta_Animal}}|start_at in use when inherited entity Animal exists}}
           | {{#vardefine:meta_Hoglin|{{#var:meta_Animal|0}}}}
           {{#if:{{#varexists:meta_Animal}}||Inherited entity Animal does not exist}}
       }}
       | The base class.
       {{#vardefine:meta_Hoglin|16}}
   }}

}}

Index Type Meaning Default 
   {{#vardefine:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:pre_meta|{{#var:meta_pre_{{#var:meta_current_entity}}}}}}
   {{#switch:
added = 
       {{#if:|}}{{#if:{{#var:pre_meta}}|{{#if:| }}{{#var:pre_meta}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
removed = 
       {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:|{{#if:{{#var:cur_meta}}| }}}}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
= 
       {{#ifeq: {{#var:cur_meta}}|{{#var:pre_meta}} | {{#var:cur_meta}} | {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:{{#var:pre_meta}}|{{#if:{{#var:cur_meta}}| }}{{#var:pre_meta}}}} }}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
#default = 
       Invalid parameter to Template:Metadata id 
   }}

   {{#vardefineecho:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
   {{#ifeq: |||Template:Metadata id must be used as {{Metadata id|}} (with an empty first parameter) for technical reasons}}

}}

Boolean Is immune to zombification false

Zoglin

{{#if:Hoglin||Must specify the current entity ID for Template:Metadata inherit}} {{#vardefine:meta_current_entity|Hoglin}}

{{#if:{{#var:meta_prerelease}}| 

   {{#if:Monster
       | {{#if:
           | Extends {{#if:[[{{#varexists:meta_Monster|Entity metadata}}#Monster|Monster]]|[[{{#varexists:meta_Monster|Entity metadata}}#Monster|Monster]]}}{{#if:[[{{#varexists:meta_{{{pre_inherits}}}|Entity metadata}}#{{{pre_inherits}}}|{{{pre_inherits}}}]]|{{#if:[[{{#varexists:meta_Monster|Entity metadata}}#Monster|Monster]]| }}[[{{#varexists:meta_{{{pre_inherits}}}|Entity metadata}}#{{{pre_inherits}}}|{{{pre_inherits}}}]]}}.
           | Extends [[{{#varexists:meta_Monster|Entity metadata}}#Monster|Monster]].
       }}{{#if:15
           | {{#vardefine:meta_Hoglin|15}}
           {{#if:{{#varexists:meta_Monster}}|start_at in use when inherited entity Monster exists}}
           | {{#vardefine:meta_Hoglin|{{#var:meta_Monster|0}}}}
           {{#if:{{#varexists:meta_Monster}}||Inherited entity Monster does not exist}}
       }}{{#if:15
           | {{#vardefine:meta_pre_Hoglin|15}}
           {{#if:{{#varexists:meta_Monster}}|start_at in use when inherited entity Monster exists}}
           | {{#vardefine:meta_pre_Hoglin|{{#var:meta_pre_Monster|0}}}}
           {{#if:{{#varexists:meta_Monster}}||Inherited entity Monster does not exist}}
       }}
       | The base class.
       {{#vardefine:meta_Hoglin|15}}
       {{#vardefine:meta_pre_Hoglin|15}}
   }}

| 

   {{#if:Monster
       | Extends Monster.
       {{#if:15
           | {{#vardefine:meta_Hoglin|15}}
           {{#if:{{#varexists:meta_Monster}}|start_at in use when inherited entity Monster exists}}
           | {{#vardefine:meta_Hoglin|{{#var:meta_Monster|0}}}}
           {{#if:{{#varexists:meta_Monster}}||Inherited entity Monster does not exist}}
       }}
       | The base class.
       {{#vardefine:meta_Hoglin|15}}
   }}

}}

Index Type Meaning Default 
   {{#vardefine:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:pre_meta|{{#var:meta_pre_{{#var:meta_current_entity}}}}}}
   {{#switch:
added = 
       {{#if:|}}{{#if:{{#var:pre_meta}}|{{#if:| }}{{#var:pre_meta}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
removed = 
       {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:|{{#if:{{#var:cur_meta}}| }}}}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
= 
       {{#ifeq: {{#var:cur_meta}}|{{#var:pre_meta}} | {{#var:cur_meta}} | {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:{{#var:pre_meta}}|{{#if:{{#var:cur_meta}}| }}{{#var:pre_meta}}}} }}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
#default = 
       Invalid parameter to Template:Metadata id 
   }}

   {{#vardefineecho:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
   {{#ifeq: |||Template:Metadata id must be used as {{Metadata id|}} (with an empty first parameter) for technical reasons}}

}}

Boolean Is baby false

Piglin

{{#if:Piglin||Must specify the current entity ID for Template:Metadata inherit}} {{#vardefine:meta_current_entity|Piglin}}

{{#if:{{#var:meta_prerelease}}| 

   {{#if:Monster
       | {{#if:
           | Extends {{#if:[[{{#varexists:meta_Monster|Entity metadata}}#Monster|Monster]]|[[{{#varexists:meta_Monster|Entity metadata}}#Monster|Monster]]}}{{#if:[[{{#varexists:meta_{{{pre_inherits}}}|Entity metadata}}#{{{pre_inherits}}}|{{{pre_inherits}}}]]|{{#if:[[{{#varexists:meta_Monster|Entity metadata}}#Monster|Monster]]| }}[[{{#varexists:meta_{{{pre_inherits}}}|Entity metadata}}#{{{pre_inherits}}}|{{{pre_inherits}}}]]}}.
           | Extends [[{{#varexists:meta_Monster|Entity metadata}}#Monster|Monster]].
       }}{{#if:15
           | {{#vardefine:meta_Piglin|15}}
           {{#if:{{#varexists:meta_Monster}}|start_at in use when inherited entity Monster exists}}
           | {{#vardefine:meta_Piglin|{{#var:meta_Monster|0}}}}
           {{#if:{{#varexists:meta_Monster}}||Inherited entity Monster does not exist}}
       }}{{#if:15
           | {{#vardefine:meta_pre_Piglin|15}}
           {{#if:{{#varexists:meta_Monster}}|start_at in use when inherited entity Monster exists}}
           | {{#vardefine:meta_pre_Piglin|{{#var:meta_pre_Monster|0}}}}
           {{#if:{{#varexists:meta_Monster}}||Inherited entity Monster does not exist}}
       }}
       | The base class.
       {{#vardefine:meta_Piglin|15}}
       {{#vardefine:meta_pre_Piglin|15}}
   }}

| 

   {{#if:Monster
       | Extends Monster.
       {{#if:15
           | {{#vardefine:meta_Piglin|15}}
           {{#if:{{#varexists:meta_Monster}}|start_at in use when inherited entity Monster exists}}
           | {{#vardefine:meta_Piglin|{{#var:meta_Monster|0}}}}
           {{#if:{{#varexists:meta_Monster}}||Inherited entity Monster does not exist}}
       }}
       | The base class.
       {{#vardefine:meta_Piglin|15}}
   }}

}}

Index Type Meaning Default 
   {{#vardefine:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:pre_meta|{{#var:meta_pre_{{#var:meta_current_entity}}}}}}
   {{#switch:
added = 
       {{#if:|}}{{#if:{{#var:pre_meta}}|{{#if:| }}{{#var:pre_meta}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
removed = 
       {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:|{{#if:{{#var:cur_meta}}| }}}}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
= 
       {{#ifeq: {{#var:cur_meta}}|{{#var:pre_meta}} | {{#var:cur_meta}} | {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:{{#var:pre_meta}}|{{#if:{{#var:cur_meta}}| }}{{#var:pre_meta}}}} }}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
#default = 
       Invalid parameter to Template:Metadata id 
   }}

   {{#vardefineecho:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
   {{#ifeq: |||Template:Metadata id must be used as {{Metadata id|}} (with an empty first parameter) for technical reasons}}

}}

Boolean Is baby false 
   {{#vardefine:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:pre_meta|{{#var:meta_pre_{{#var:meta_current_entity}}}}}}
   {{#switch:
added = 
       {{#if:|}}{{#if:{{#var:pre_meta}}|{{#if:| }}{{#var:pre_meta}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
removed = 
       {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:|{{#if:{{#var:cur_meta}}| }}}}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
= 
       {{#ifeq: {{#var:cur_meta}}|{{#var:pre_meta}} | {{#var:cur_meta}} | {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:{{#var:pre_meta}}|{{#if:{{#var:cur_meta}}| }}{{#var:pre_meta}}}} }}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
#default = 
       Invalid parameter to Template:Metadata id 
   }}

   {{#vardefineecho:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
   {{#ifeq: |||Template:Metadata id must be used as {{Metadata id|}} (with an empty first parameter) for technical reasons}}

}}

Boolean Is immune to zombification false 
   {{#vardefine:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:pre_meta|{{#var:meta_pre_{{#var:meta_current_entity}}}}}}
   {{#switch:
added = 
       {{#if:|}}{{#if:{{#var:pre_meta}}|{{#if:| }}{{#var:pre_meta}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
removed = 
       {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:|{{#if:{{#var:cur_meta}}| }}}}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
= 
       {{#ifeq: {{#var:cur_meta}}|{{#var:pre_meta}} | {{#var:cur_meta}} | {{#if:{{#var:cur_meta}}|{{#var:cur_meta}}}}{{#if:{{#var:pre_meta}}|{{#if:{{#var:cur_meta}}| }}{{#var:pre_meta}}}} }}
       {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
       {{#vardefine:meta_pre_{{#var:meta_current_entity}}|{{#expr:{{#var:pre_meta}}+1}}}}
#default = 
       Invalid parameter to Template:Metadata id 
   }}

   {{#vardefineecho:cur_meta|{{#var:meta_{{#var:meta_current_entity}}}}}}
   {{#vardefine:meta_{{#var:meta_current_entity}}|{{#expr:{{#var:cur_meta}}+1}}}}
   {{#ifeq: |||Template:Metadata id must be used as {{Metadata id|}} (with an empty first parameter) for technical reasons}}

}}

Boolean Is charging crossbow false

{{#if:Zombie Pigman|Zombie Pigman}}{{#if:Zombified Piglin|{{#if:Zombie Pigman| }}Zombified Piglin}}

{{#if:{{#if:Zombie Pigman|Zombie Pigman}}{{#if:Zombified Piglin|{{#if:Zombie Pigman| }}Zombified Piglin}}||Must specify the current entity ID for Template:Metadata inherit}} {{#vardefine:meta_current_entity|{{#if:Zombie Pigman|Zombie Pigman}}{{#if:Zombified Piglin|{{#if:Zombie Pigman| }}Zombified Piglin}}}}

{{#if:{{#var:meta_prerelease}}| 

   {{#if:Zombie
       | {{#if:
           | Extends {{#if:[[{{#varexists:meta_Zombie|Entity metadata}}#Zombie|Zombie]]|[[{{#varexists:meta_Zombie|Entity metadata}}#Zombie|Zombie]]}}{{#if:[[{{#varexists:meta_{{{pre_inherits}}}|Entity metadata}}#{{{pre_inherits}}}|{{{pre_inherits}}}]]|{{#if:[[{{#varexists:meta_Zombie|Entity metadata}}#Zombie|Zombie]]| }}[[{{#varexists:meta_{{{pre_inherits}}}|Entity metadata}}#{{{pre_inherits}}}|{{{pre_inherits}}}]]}}.
           | Extends [[{{#varexists:meta_Zombie|Entity metadata}}#Zombie|Zombie]].
       }}{{#if:18
           | {{#vardefine:meta_{{#if:Zombie Pigman|Zombie Pigman}}{{#if:Zombified Piglin|{{#if:Zombie Pigman| }}Zombified Piglin}}|18}}
           {{#if:{{#varexists:meta_Zombie}}|start_at in use when inherited entity Zombie exists}}
           | {{#vardefine:meta_{{#if:Zombie Pigman|Zombie Pigman}}{{#if:Zombified Piglin|{{#if:Zombie Pigman| }}Zombified Piglin}}|{{#var:meta_Zombie|0}}}}
           {{#if:{{#varexists:meta_Zombie}}||Inherited entity Zombie does not exist}}
       }}{{#if:18
           | {{#vardefine:meta_pre_{{#if:Zombie Pigman|Zombie Pigman}}{{#if:Zombified Piglin|{{#if:Zombie Pigman| }}Zombified Piglin}}|18}}
           {{#if:{{#varexists:meta_Zombie}}|start_at in use when inherited entity Zombie exists}}
           | {{#vardefine:meta_pre_{{#if:Zombie Pigman|Zombie Pigman}}{{#if:Zombified Piglin|{{#if:Zombie Pigman| }}Zombified Piglin}}|{{#var:meta_pre_Zombie|0}}}}
           {{#if:{{#varexists:meta_Zombie}}||Inherited entity Zombie does not exist}}
       }}
       | The base class.
       {{#vardefine:meta_{{#if:Zombie Pigman|Zombie Pigman}}{{#if:Zombified Piglin|{{#if:Zombie Pigman| }}Zombified Piglin}}|18}}
       {{#vardefine:meta_pre_{{#if:Zombie Pigman|Zombie Pigman}}{{#if:Zombified Piglin|{{#if:Zombie Pigman| }}Zombified Piglin}}|18}}
   }}

| 

   {{#if:Zombie
       | Extends Zombie.
       {{#if:18
           | {{#vardefine:meta_{{#if:Zombie Pigman|Zombie Pigman}}{{#if:Zombified Piglin|{{#if:Zombie Pigman| }}Zombified Piglin}}|18}}
           {{#if:{{#varexists:meta_Zombie}}|start_at in use when inherited entity Zombie exists}}
           | {{#vardefine:meta_{{#if:Zombie Pigman|Zombie Pigman}}{{#if:Zombified Piglin|{{#if:Zombie Pigman| }}Zombified Piglin}}|{{#var:meta_Zombie|0}}}}
           {{#if:{{#varexists:meta_Zombie}}||Inherited entity Zombie does not exist}}
       }}
       | The base class.
       {{#vardefine:meta_{{#if:Zombie Pigman|Zombie Pigman}}{{#if:Zombified Piglin|{{#if:Zombie Pigman| }}Zombified Piglin}}|18}}
   }}

}}

No additional metadata.

Block Actions

No changes so far.

Inventories

No changes so far.

Plugin Channels

No changes so far.

Play

Clientbound

Chat Message (clientbound)

Identifying the difference between Chat/System Message is important as it helps respect the user's chat visibility options. See processing chat for more info about these positions.

Game info accepts json formatting but does not display it, although the deprecated §-based formatting works. This is not an issue when using the Title packet, so prefer that packet for displaying information in that slot. See MC-119145 for more information.

Packet ID State Bound To Field Name Field Type Notes
0x0F Play Client JSON Data Chat Limited to 32767 bytes
Position Byte 0: chat (chat box), 1: system message (chat box), 2: game info (above hotbar).
Sender UUID Used by the Notchian client for the disableChat launch option. Setting both longs to 0 will always display the message regardless of the setting.

Chunk Data

Main article: Chunk Format
See also: #Unload Chunk{{#if:| for {{{for}}}}}
The following information needs to be added to this page:
How do biomes work now? The biome change happened at the same time as the seed change, but it's not clear how/if biomes could be computed given that it's not the actual seed... (/r/mojira discussion which notes that it seems to be some kind of interpolation, and 3D biomes are only used in the nether)

The server only sends skylight information for chunk pillars in the Overworld, it's up to the client to know in which dimenison the player is currently located. You can also infer this information from the primary bitmask and the amount of uncompressed bytes sent. 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 later).

Packet ID State Bound To Field Name Field Type Notes
0x22 Play Client Chunk X Int Chunk coordinate (block coordinate divided by 16, rounded down)
Chunk Z Int Chunk coordinate (block coordinate divided by 16, rounded down)
Full chunk Boolean See Chunk Format
Primary Bit Mask VarInt Bitmask with bits set to 1 for every 16×16×16 chunk section whose data is included in Data. The least significant bit represents the chunk section at the bottom of the chunk column (from y=0 to y=15).
Heightmaps NBT Compound containing one long array named MOTION_BLOCKING, 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 totaling 36 longs). The Notchian server also adds a WORLD_SURFACE long array, the purpose of which is unknown, but it's not required for the chunk to be accepted.
Biomes Optional array of Integer 1024 biome IDs, ordered by x then z then y, in 4×4×4 blocks. Not present if full chunk is false.
Size VarInt Size of Data in bytes
Data Byte array See data structure in Chunk Format
Number of block entities VarInt Number of elements in the following array
Block entities Array of NBT Tag All block entities in the chunk. Use the x, y, and z tags in the NBT to determine their positions.

Note that the Notchian client requires an Update View Position packet when it crosses a chunk border, otherwise it'll only display render distance + 2 chunks around the chunk it spawned in.

{{#if:|}}{{#if:The compacted array format has been adjusted so that individual entries no longer span across multiple longs, affecting the main data array and heightmaps.|{{#if:| }}The compacted array format has been adjusted so that individual entries no longer span across multiple longs, affecting the main data array and heightmaps.}}

Join Game

See Protocol Encryption for information on logging in.

The following information needs to be added to this page:
Burger broke on this packet for 20w21a, changes unknown
Packet ID State Bound To Field Name Field Type Notes
0x26 Play Client Entity ID Int The player's Entity ID (EID)
Gamemode Unsigned Byte 0: Survival, 1: Creative, 2: Adventure, 3: Spectator. Bit 3 (0x8) is the hardcore flag.
Unknown NBT Tag? Dimension registry?
Dimension Int Enum}}{{#if:Identifier|{{#if:Int Enum| }}Identifier}} -1: The Nether, 0: The Overworld, 1: The End}}{{#if:|{{#if:-1: The Nether, 0: The Overworld, 1: The End| }}{{{2}}}}}
Hashed seed Long First 8 bytes of the SHA-256 hash of the world's seed.
Max Players Unsigned Byte Was once used by the client to draw the player list, but now is ignored
Level Type String Enum (16) default, flat, largeBiomes, amplified, customized, buffet, default_1_1
View Distance VarInt Render distance (2-32)
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
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

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.

Packet ID State Bound To Field Name Field Type Notes
0x3B Play Client Dimension Int Enum}}{{#if:Identifier|{{#if:Int Enum| }}Identifier}} -1: The Nether, 0: The Overworld, 1: The End}}{{#if:|{{#if:-1: The Nether, 0: The Overworld, 1: The End| }}{{{2}}}}}
Hashed seed Long First 8 bytes of the SHA-256 hash of the world's seed.
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
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
Copy metadata Boolean If false, metadata is reset on the respawned player entity. Set to true for dimension changes (including the dimension change triggered by sending client status perform respawn to exit the end poem/credits), and false for normal respawns.

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).

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.

Entity Properties

Sets attributes on the given entity.

Packet ID State Bound To Field Name Field Type Notes
0x59 Play Client Entity ID VarInt
Number Of Properties Int Number of elements in the following array
Property Key Array String (64)}}{{#if:Identifier|{{#if:String (64)| }}Identifier}} 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):

Key Default Min Max Label
generic.maxHealth}}{{#if:generic.max_health|{{#if:generic.maxHealth| }}generic.max_health}} 20.0 0.0 1024.0 Max Health
generic.followRange}}{{#if:generic.follow_range|{{#if:generic.followRange| }}generic.follow_range}} 32.0 0.0 2048.0 Follow Range
generic.knockbackResistance}}{{#if:generic.knockback_resistance|{{#if:generic.knockbackResistance| }}generic.knockback_resistance}} 0.0 0.0 1.0 Knockback Resistance
generic.movementSpeed}}{{#if:generic.movement_speed|{{#if:generic.movementSpeed| }}generic.movement_speed}} 0.7 0.0 1024.0 Movement Speed
generic.attackDamage}}{{#if:generic.attack_damage|{{#if:generic.attackDamage| }}generic.attack_damage}} 2.0 0.0 2048.0 Attack Damage
generic.attackSpeed}}{{#if:generic.attack_speed|{{#if:generic.attackSpeed| }}generic.attack_speed}} 4.0 0.0 1024.0 Attack Speed
generic.flyingSpeed}}{{#if:generic.flying_speed|{{#if:generic.flyingSpeed| }}generic.flying_speed}} 0.4 0.0 1024.0 Flying Speed
generic.armor 0.0 0.0 30.0 Armor
generic.armorToughness}}{{#if:generic.armor_toughness|{{#if:generic.armorToughness| }}generic.armor_toughness}} 0.0 0.0 20.0 Armor Toughness
generic.attackKnockback}}{{#if:generic.attack_knockback|{{#if:generic.attackKnockback| }}generic.attack_knockback}} 0.0 0.0 5.0 —
generic.luck 0.0 -1024.0 1024.0 Luck
horse.jumpStrength}}{{#if:horse.jump_strength|{{#if:horse.jumpStrength| }}horse.jump_strength}} 0.7 0.0 2.0 Jump Strength
zombie.spawnReinforcements}}{{#if:zombie.spawn_reinforcements|{{#if:zombie.spawnReinforcements| }}zombie.spawn_reinforcements}} 0.0 0.0 1.0 Spawn Reinforcements Chance
generic.reachDistance 5.0 0.0 1024.0 Player Reach Distance (Forge only)
forge.swimSpeed 1.0 0.0 1024.0 Swimming Speed (Forge only)

Unknown attributes will cause a game crash (MC-150405) due to the default minimum being larger than the default value.

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.

Serverbound

Generate Structure

Sent when Generate is pressed on the Jigsaw Block interface.

Packet ID State Bound To Field Name Field Type Notes
0x0F Play Server Location Position Block entity location
Levels VarInt Value of the levels slider/max depth to generate

Update Jigsaw Block

Sent when Done is pressed on the Jigsaw Block interface.

Packet ID State Bound To Field Name Field Type Notes
{{#if:0x27|0x27}}{{#if:0x28|{{#if:0x27| }}0x28}} Play Server Location Position Block entity location
Attachment type Identifier
Name Identifier
Target Identifier
Target pool}}{{#if:Pool|{{#if:Target pool| }}Pool}} Identifier
Final state String "Turns into" on the GUI, final_state in NBT
Joint type String rollable if the attached piece can be rotated, else aligned

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.

Packet ID State Bound To Field Name Field Type Notes
0x00 Handshaking Server Protocol Version VarInt See protocol version numbers (currently {{#if:578|578}}{{#if:718|{{#if:578| }}718}})
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. Note that SRV records are a complete redirect, e.g. if _minecraft._tcp.example.com points to mc.example.org, users connecting to example.com will provide mc.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

Status

Clientbound

No changes so far.

Serverbound

No changes so far.

Login

Clientbound

Login Success

Packet ID State Bound To Field Name Field Type Notes
0x02 Login Client UUID String (36)}}{{#if:UUID|{{#if:String (36)| }}UUID}} Unlike in other packets, this field contains the UUID as a string with hyphens}}{{#if:|{{#if:Unlike in other packets, this field contains the UUID as a string with hyphens| }}{{{2}}}}}.
Username String (16)

This packet switches the connection state to play.

Serverbound

No changes so far.

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