Difference between revisions of "Pre-release protocol"

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(Added new game event)
(Updated to 1.21-pre2)
 
(46 intermediate revisions by 6 users not shown)
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This page documents the changes from the [[Protocol|last stable Minecraft release]] (currently [[Protocol version numbers|1.20.2, protocol 764]]) to the current pre-release (currently [[Protocol version numbers|23w40a, protocol {{Snapshot PVN|1073741978}}]]). Note that this page contains bleeding-edge information that may not be completely or correctly documented.
+
This page documents the changes from the [[Protocol|last stable Minecraft release]] (currently [[Protocol version numbers|1.20.6, protocol 766]]) to the current pre-release (currently [[Protocol version numbers|1.21-pre2, protocol {{Snapshot PVN|1073742024}}]]). Note that this page contains bleeding-edge information that may not be completely or correctly documented.
  
 
One who wishes to commandeer the merging of this into [[Protocol]] when an update is made must be sure to respect any changes that may have occurred to the respective packets there.
 
One who wishes to commandeer the merging of this into [[Protocol]] when an update is made must be sure to respect any changes that may have occurred to the respective packets there.
Line 9: Line 9:
 
=== Data types ===
 
=== Data types ===
  
−
==== Chat ====
+
No changes documented so far.
−
 
 
−
The [[Chat]] type is now serialized as a [[NBT|NBT Tag]] instead of a JSON String.
 
−
 
 
−
{| class="wikitable"
 
−
|-
 
−
! Name
 
−
! Size (bytes)
 
−
! Encodes
 
−
! Notes
 
−
|-
 
−
! id=Definitions:chat | [[#Definitions:chat|Chat]]
 
−
| {{change|≥ 1 <br />≤ (262144&times;4) + 3}}
 
−
{{change||Varies}}
 
−
| See [[Chat]]
 
−
| {{change|Encoded as a String with max length of 262144.}}
 
−
{{change||Encoded as a [[NBT|NBT Tag]], with varying type depending on the case:}}
 
−
* {{change||As a [[NBT#Specification|String Tag]]: For raw components that contain only text and no other fields (styling, events etc.).}}
 
−
* {{change||As a [[NBT#Specification|Compound Tag]]: Every other case.}}
 
−
|}
 
  
 
=== Packets ===
 
=== Packets ===
Line 37: Line 18:
 
  !colspan="2"| Documentation
 
  !colspan="2"| Documentation
 
  |-
 
  |-
−
!colspan="4"| Play clientbound
+
!colspan="4"| Configuration clientbound
−
{{PacketList|0x20|Game Event}}
+
{{PacketList|0x0F|Clientbound Report Details (configuration)|rel=added}}
 +
{{PacketList|0x10|Clientbound Server Links (configuration)|rel=added}}
 +
|-
 +
!colspan="4"| Play clientbound
 +
{{PacketList|0x7A|Clientbound Report Details (play)|rel=added}}
 +
{{PacketList|0x7B|Clientbound Server Links (play)|rel=added}}
 +
|-
 
|}
 
|}
  
−
== New/modified data types ==
+
== Handshake ==
  
 
No changes so far.
 
No changes so far.
  
−
== Entity Metadata ==
+
== Status ==
  
 
No changes so far.
 
No changes so far.
  
−
=== Entity ===
+
== Login ==
  
 
No changes so far.
 
No changes so far.
  
−
== Block Actions ==
+
== Configuration ==
  
−
No changes so far.
+
=== Clientbound ===
  
−
== Inventories ==
+
==== Clientbound Report Details (configuration) ====
  
−
No changes so far.
+
Contains a list of key-value text entries that are included in any crash or disconnection report generated during connection to the server.
  
−
== Plugin Channels ==
+
{| class="wikitable" {{added}}
 +
! Packet ID
 +
! State
 +
! Bound To
 +
! colspan="2"| Field Name
 +
! colspan="2"| Field Type
 +
! Notes
 +
|-
 +
| rowspan="3"| 0x0F
 +
| rowspan="3"| Configuration
 +
| rowspan="3"| Client
 +
| colspan="2"| Details Count
 +
| colspan="2"| {{Type|VarInt}} (32)
 +
| The number of details in the following array.
 +
|-
 +
| rowspan="2"| Details
 +
| Title
 +
| rowspan="2"| {{Type|Array}}
 +
| {{Type|String}} (128)
 +
|
 +
|-
 +
| Description
 +
| {{Type|String}} (4096)
 +
|
 +
|}
  
−
No changes so far.
+
==== Clientbound Server Links (configuration) ====
  
−
== Status ==
+
This packet contains a list of links that the Notchian client will display in the menu available from the pause menu. Link labels can be built-in or custom (i.e., any text).
  
−
=== Clientbound ===
+
{| class="wikitable" {{added}}
 +
! Packet ID
 +
! State
 +
! Bound To
 +
! colspan="2"| Field Name
 +
! colspan="2"| Field Type
 +
! Notes
 +
|-
 +
| rowspan="4"| 0x10
 +
| rowspan="4"| Configuration
 +
| rowspan="4"| Client
 +
| colspan="2"| Links Count
 +
| colspan="2"| {{Type|VarInt}}
 +
| The number of links in the following array.
 +
|-
 +
| rowspan="3"| Links
 +
| Is built-in
 +
| rowspan="3"| {{Type|Array}}
 +
| {{Type|Boolean}}
 +
| Determines if the following label is built-in (from enum) or custom (text component).
 +
|-
 +
| Label
 +
| {{Type|VarInt}} {{Type|Enum}} / {{Type|Text Component}}
 +
| See below.
 +
|-
 +
| URL
 +
| {{Type|String}}
 +
| Valid URL.
 +
|}
  
−
No changes so far.
 
  
−
=== Serverbound ===
+
{| class="wikitable" {{added}}
−
 
+
! ID
−
No changes so far.
+
! Name
−
 
+
! Notes
−
== Login ==
+
|-
−
 
+
| 0
−
=== Clientbound ===
+
| Bug Report
−
 
+
| Displayed on connection error screen; included as a comment in the disconnection report.
−
No changes so far.
+
|-
 +
| 1
 +
| Community Guidelines
 +
|
 +
|-
 +
| 2
 +
| Support
 +
|
 +
|-
 +
| 3
 +
| Status
 +
|
 +
|-
 +
| 4
 +
| Feedback
 +
|
 +
|-
 +
| 5
 +
| Community
 +
|
 +
|-
 +
| 6
 +
| Website
 +
|
 +
|-
 +
| 7
 +
| Forums
 +
|
 +
|-
 +
| 8
 +
| News
 +
|
 +
|-
 +
| 9
 +
| Announcements
 +
|
 +
|-
 +
|}
  
 
=== Serverbound ===
 
=== Serverbound ===
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No changes so far.
 
No changes so far.
  
−
== Configuration ==
+
== Play ==
  
 
=== Clientbound ===
 
=== Clientbound ===
  
−
No changes so far.
+
==== Clientbound Report Details (play) ====
  
−
=== Serverbound ===
+
Contains a list of key-value text entries that are included in any crash or disconnection report generated during connection to the server.
  
−
No changes so far.
+
{| class="wikitable" {{added}}
−
 
+
! Packet ID
−
== Play ==
+
! State
−
 
+
! Bound To
−
=== Clientbound ===
+
! colspan="2"| Field Name
 +
! colspan="2"| Field Type
 +
! Notes
 +
|-
 +
| rowspan="3"| 0x7A
 +
| rowspan="3"| Configuration
 +
| rowspan="3"| Client
 +
| colspan="2"| Details Count
 +
| colspan="2"| {{Type|VarInt}} (32)
 +
| The number of details in the following array.
 +
|-
 +
| rowspan="2"| Details
 +
| Title
 +
| rowspan="2"| {{Type|Array}}
 +
| {{Type|String}} (128)
 +
|
 +
|-
 +
| Description
 +
| {{Type|String}} (4096)
 +
|
 +
|}
  
−
==== Game Event ====
+
==== Clientbound Server Links (play) ====
  
−
Used for a wide variety of game events, from weather to bed use to game mode to demo messages.
+
This packet contains a list of links that the Notchian client will display in the menu available from the pause menu. Link labels can be built-in or custom (i.e., any text).
  
−
{| class="wikitable"
+
{| class="wikitable" {{added}}
 
  ! Packet ID
 
  ! Packet ID
 
  ! State
 
  ! State
 
  ! Bound To
 
  ! Bound To
−
  ! Field Name
+
  ! colspan="2"| Field Name
−
  ! Field Type
+
  ! colspan="2"| Field Type
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
−
  | rowspan="2"| 0x20
+
  | rowspan="4"| 0x7B
−
  | rowspan="2"| Play
+
| rowspan="4"| Configuration
−
  | rowspan="2"| Client
+
| rowspan="4"| Client
−
  | Event
+
| colspan="2"| Links Count
−
  | Unsigned Byte
+
| colspan="2"| {{Type|VarInt}}
 +
| The number of links in the following array.
 +
|-
 +
  | rowspan="3"| Links
 +
| Is built-in
 +
  | rowspan="3"| {{Type|Array}}
 +
| {{Type|Boolean}}
 +
| Determines if the following label is built-in (from enum) or custom (text component).
 +
|-
 +
  | Label
 +
  | {{Type|VarInt}} {{Type|Enum}} / {{Type|Text Component}}
 
  | See below.
 
  | See below.
 
  |-
 
  |-
−
  | Value
+
  | URL
−
  | Float
+
  | {{Type|String}}
−
  | Depends on Event.
+
  | Valid URL.
−
|}
+
|}
  
−
''Events'':
+
{| class="wikitable" {{added}}
−
 
+
  ! ID
−
{| class="wikitable"
+
  ! Name
−
  ! Event
+
  ! Notes
−
  ! Effect
 
−
  ! Value
 
 
  |-
 
  |-
 
  | 0
 
  | 0
−
  | No respawn block available
+
  | Bug Report
−
  | Note: Displays message 'block.minecraft.spawn.not_valid' (You have no home bed or charged respawn anchor, or it was obstructed) to the player.
+
  | Displayed on connection error screen; included as a comment in the disconnection report.
 
  |-
 
  |-
 
  | 1
 
  | 1
−
  | Begin raining
+
  | Community Guidelines
−
  |
+
  |  
 
  |-
 
  |-
 
  | 2
 
  | 2
−
  | End raining
+
  | Support
−
  |
+
  |  
 
  |-
 
  |-
 
  | 3
 
  | 3
−
  | Change game mode
+
  | Status
−
  | 0: Survival, 1: Creative, 2: Adventure, 3: Spectator.
+
  |  
 
  |-
 
  |-
 
  | 4
 
  | 4
−
  | Win game
+
  | Feedback
−
  | 0: Just respawn player.<br>1: Roll the credits and respawn player.<br>Note that 1 is only sent by notchian server when player has not yet achieved advancement "The end?", else 0 is sent.
+
  |  
 
  |-
 
  |-
 
  | 5
 
  | 5
−
  | Demo event
+
  | Community
−
  | 0: Show welcome to demo screen.<br>101: Tell movement controls.<br>102: Tell jump control.<br>103: Tell inventory control.<br>104: Tell that the demo is over and print a message about how to take a screenshot.
+
  |  
 
  |-
 
  |-
 
  | 6
 
  | 6
−
  | Arrow hit player
+
  | Website
−
  | Note: Sent when any player is struck by an arrow.
+
  |  
 
  |-
 
  |-
 
  | 7
 
  | 7
−
  | Rain level change
+
  | Forums
−
  | Note: Seems to change both sky color and lighting.<br>Rain level ranging from 0 to 1.
+
  |  
 
  |-
 
  |-
 
  | 8
 
  | 8
−
  | Thunder level change
+
  | News
−
  | Note: Seems to change both sky color and lighting (same as Rain level change, but doesn't start rain). It also requires rain to render by notchian client.<br>Thunder level ranging from 0 to 1.
+
  |  
 
  |-
 
  |-
 
  | 9
 
  | 9
−
  | Play pufferfish sting sound
+
  | Announcements
−
|-
+
  |  
−
| 10
 
−
| Play elder guardian mob appearance (effect and sound)
 
−
  |
 
 
  |-
 
  |-
−
| 11
 
−
| Enable respawn screen
 
−
|  0: Enable respawn screen.<br>1: Immediately respawn (sent when the <code>doImmediateRespawn</code> gamerule changes).
 
−
|-
 
−
| 12
 
−
| Limited crafting
 
−
| 0: Disable limited crafting.<br>1: Enable limited crafting (sent when the <code>doLimitedCrafting</code> gamerule changes).
 
−
|- {{added}}
 
−
| 13
 
−
| Start waiting for level chunks
 
−
| Instructs the client to begin the waiting process for the level chunks.<br>Sent by the server after the level is cleared on the client and is being re-sent (either during the first, or subsequent reconfigurations).
 
 
  |}
 
  |}
  
Line 189: Line 278:
  
 
No changes so far.
 
No changes so far.
−
 
  
 
[[Category:Minecraft Modern]]
 
[[Category:Minecraft Modern]]

Latest revision as of 10:40, 8 June 2024

This page documents the changes from the last stable Minecraft release (currently 1.20.6, protocol 766) to the current pre-release (currently 1.21-pre2, protocol Snapshot 200). 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 documented so far.

Packets

ID Packet name Documentation
Configuration clientbound
0x0F Clientbound Report Details (configuration) Pre
0x10 Clientbound Server Links (configuration) Pre
Play clientbound
0x7A Clientbound Report Details (play) Pre
0x7B Clientbound Server Links (play) Pre

Handshake

No changes so far.

Status

No changes so far.

Login

No changes so far.

Configuration

Clientbound

Clientbound Report Details (configuration)

Contains a list of key-value text entries that are included in any crash or disconnection report generated during connection to the server.

Packet ID State Bound To Field Name Field Type Notes
0x0F Configuration Client Details Count VarInt (32) The number of details in the following array.
Details Title Array String (128)
Description String (4096)

Clientbound Server Links (configuration)

This packet contains a list of links that the Notchian client will display in the menu available from the pause menu. Link labels can be built-in or custom (i.e., any text).

Packet ID State Bound To Field Name Field Type Notes
0x10 Configuration Client Links Count VarInt The number of links in the following array.
Links Is built-in Array Boolean Determines if the following label is built-in (from enum) or custom (text component).
Label VarInt Enum / Text Component See below.
URL String Valid URL.


ID Name Notes
0 Bug Report Displayed on connection error screen; included as a comment in the disconnection report.
1 Community Guidelines
2 Support
3 Status
4 Feedback
5 Community
6 Website
7 Forums
8 News
9 Announcements

Serverbound

No changes so far.

Play

Clientbound

Clientbound Report Details (play)

Contains a list of key-value text entries that are included in any crash or disconnection report generated during connection to the server.

Packet ID State Bound To Field Name Field Type Notes
0x7A Configuration Client Details Count VarInt (32) The number of details in the following array.
Details Title Array String (128)
Description String (4096)

Clientbound Server Links (play)

This packet contains a list of links that the Notchian client will display in the menu available from the pause menu. Link labels can be built-in or custom (i.e., any text).

Packet ID State Bound To Field Name Field Type Notes
0x7B Configuration Client Links Count VarInt The number of links in the following array.
Links Is built-in Array Boolean Determines if the following label is built-in (from enum) or custom (text component).
Label VarInt Enum / Text Component See below.
URL String Valid URL.
ID Name Notes
0 Bug Report Displayed on connection error screen; included as a comment in the disconnection report.
1 Community Guidelines
2 Support
3 Status
4 Feedback
5 Community
6 Website
7 Forums
8 News
9 Announcements

Serverbound

No changes so far.

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