Pre-release protocol: Difference between revisions

From wiki.vg
Jump to navigation Jump to search
imported>Pokechu22
(20w12a: spawn position shifted from 0x4E to 0x43, and Login Success's UUID changed)
imported>Proximyst
(Add information on how to decode & encode UUID)
Line 254: Line 254:
  |rowspan="2"| Login
  |rowspan="2"| Login
  |rowspan="2"| Client
  |rowspan="2"| Client
  | UUID|
  | UUID
  | {{Change|String (36)|Int array}} <!-- How big? -->
  | {{Change|String (36)|Int array (4)}}
  | Unlike in other packets, this field contains the UUID as {{change|a string with hyphens|a fixed length int array}}.
  | Unlike in other packets, this field contains the UUID as {{change|a string with hyphens|a fixed length int array}}.
{{change||The UUID is encoded and decoded as follows, where the int array for decoding is read in the order the bytes are received:
  public static UUID decodeUuid(int[] is) {
    return new UUID((long)is[0] << 32 <nowiki>|</nowiki> (long)is[1] & 4294967295L, (long)is[2] << 32 <nowiki>|</nowiki> (long)is[3] & 4294967295L);
  }
  public static int[] encodeUuid(long mostSignificantBits, long leastSignificantBits) {
    return new int[]{
        (int)(mostSignificantBits >> 32),
        (int)mostSignificantBits,
        (int)(leastSignificantBits >> 32),
        (int)leastSignificantBits
    };
  }
}}
  |-
  |-
  | Username
  | Username

Revision as of 11:36, 21 March 2020

This page documents the changes from the last stable Minecraft release (currently 1.15.2, protocol 578) to the current pre-release (currently 20w12a, protocol 707). 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
Handshaking serverbound
0x00 Handshake added Current }} removed unchanged | (unchanged) | Pre }} }}
Play clientbound
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 }} }}
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}}

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

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}}
   }}

}}

No additional metadata.

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

No changes so far.

Serverbound

No changes so far.

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:707|{{#if:578| }}707}})
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:Int array (4)|{{#if:String (36)| }}Int array (4)}} a string with hyphens}}{{#if:a fixed length int array|{{#if:a string with hyphens| }}a fixed length int array}}.

{{#if:|}}{{#if:The UUID is encoded and decoded as follows, where the int array for decoding is read in the order the bytes are received: 

 public static UUID decodeUuid(int[] is) {
   return new UUID((long)is[0] << 32 | (long)is[1] & 4294967295L, (long)is[2] << 32 | (long)is[3] & 4294967295L);
 }
 public static int[] encodeUuid(long mostSignificantBits, long leastSignificantBits) {
   return new int[]{
       (int)(mostSignificantBits >> 32),
       (int)mostSignificantBits,
       (int)(leastSignificantBits >> 32),
       (int)leastSignificantBits
   };
 }
}}The UUID is encoded and decoded as follows, where the int array for decoding is read in the order the bytes are received: 
 public static UUID decodeUuid(int[] is) {
   return new UUID((long)is[0] << 32 | (long)is[1] & 4294967295L, (long)is[2] << 32 | (long)is[3] & 4294967295L);
 }
 public static int[] encodeUuid(long mostSignificantBits, long leastSignificantBits) {
   return new int[]{
       (int)(mostSignificantBits >> 32),
       (int)mostSignificantBits,
       (int)(leastSignificantBits >> 32),
       (int)leastSignificantBits
   };
 }

}}

Username String (16)

This packet switches the connection state to play.

Serverbound

No changes so far.

Retrieved from "https://wikivg.fentanylsolutions.org/index.php?title=Pre-release_protocol&oldid=39869"