Difference between revisions of "Pre-release protocol"

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{{Box
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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.
−
  |BORDER = #FF9999
 
−
  |BACKGROUND = #FFCC99
 
−
  |WIDTH = 100%
 
−
  |ICON =
 
−
  |HEADING = Under construction
 
−
  |CONTENT = In light of the recent release of Minecraft 1.9, this article still contains some changes between 1.8.9 and 1.9, which are currently being merged into [[Protocol]]. If you want to contribute, please coordinate with us in [irc://irc.freenode.net/mcdevs #mcdevs], and ping [[User:Fenhl|Fenhl]] before making any edits.
 
−
}}
 
−
 
 
−
This page documents the changes from the [[Protocol|last stable Minecraft release]] (currently [[Protocol version numbers|1.9, protocol 107]]) to the current pre-release (currently [[Protocol version numbers|1.9.1-pre2, protocol 108]]). Note that this page contains bleeding-edge information that may not be completely or correctly documented.
 
  
 
One who wishes to commandeer the merging of this into [[Protocol]] when an update is made must be sure to respect any changes that may have occurred to the respective packets there.
 
One who wishes to commandeer the merging of this into [[Protocol]] when an update is made must be sure to respect any changes that may have occurred to the respective packets there.
Line 18: Line 9:
 
=== Data types ===
 
=== Data types ===
  
−
No changes so far.
+
No changes documented so far.
  
 
=== Packets ===
 
=== Packets ===
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  !colspan="2"| Documentation
 
  !colspan="2"| Documentation
 
  |-
 
  |-
−
  !colspan="4"| Handshaking serverbound
+
  !colspan="4"| Configuration clientbound
−
{{PacketList|0x00|Handshake}}
+
{{PacketList|0x0F|Clientbound Report Details (configuration)|rel=added}}
 +
{{PacketList|0x10|Clientbound Server Links (configuration)|rel=added}}
 
  |-
 
  |-
 
  !colspan="4"| Play clientbound
 
  !colspan="4"| Play clientbound
−
{{PacketList|0x23|Join Game}}
+
{{PacketList|0x7A|Clientbound Report Details (play)|rel=added}}
−
{{PacketList|0x25|Entity Relative Move}}
+
{{PacketList|0x7B|Clientbound Server Links (play)|rel=added}}
−
{{PacketList|0x26|Entity Look And Relative Move}}
 
−
{{PacketList|0x3A|Attach Entity}}
 
 
  |-
 
  |-
−
!colspan="4"| Play serverbound
+
|}
−
{{PacketList|0x00|Teleport Confirm|rel=added}}
 
−
{{PacketList|0x01|Tab-Complete|rel=Tab-Complete 2}}
 
−
{{PacketList|0x03|Client Status}}
 
−
{{PacketList|0x04|Client Settings}}
 
−
{{PacketList|0x0A|Use Entity}}
 
−
{{PacketList|0x10|Vehicle Move (serverbound)|rel=added}}
 
−
{{PacketList|0x11|Steer Boat|rel=added}}
 
−
{{PacketList|0x13|Player Digging}}
 
−
{{PacketList|0x14|Entity Action}}
 
−
{{PacketList|0x19|Update Sign|rel=Update Sign 2}}
 
−
{{PacketList|0x1A|Animation|rel=Animation 2}}
 
−
{{PacketList|0x1C|Player Block Placement}}
 
−
{{PacketList|0x1D|Use Item|rel=added}}
 
−
|}
 
  
−
== New/modified data types ==
+
== Handshake ==
  
−
None so far.
+
No changes so far.
  
−
== Handshaking ==
+
== Status ==
  
−
=== Clientbound ===
+
No changes so far.
 +
 
 +
== Login ==
  
 
No changes so far.
 
No changes so far.
  
−
=== Serverbound ===
+
== Configuration ==
 +
 
 +
=== Clientbound ===
  
−
==== Handshake ====
+
==== Clientbound Report Details (configuration) ====
  
−
This causes the server to switch into the target state.
+
Contains a list of key-value text entries that are included in any crash or disconnection report generated during connection to the server.
  
−
{| 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="4"| 0x00
+
  | rowspan="3"| 0x0F
−
  |rowspan="4"| Handshaking
+
  | rowspan="3"| Configuration
−
  |rowspan="4"| Server
+
  | rowspan="3"| Client
−
  | Protocol Version
+
  | colspan="2"| Details Count
−
  | VarInt
+
  | colspan="2"| {{Type|VarInt}} (32)
−
| See [[protocol version numbers]] (currently {{Change|107|108}})
+
| The number of details in the following array.
 
  |-
 
  |-
−
  | Server Address
+
  | rowspan="2"| Details
−
  | String
+
  | Title
−
  | hostname or IP, e.g. localhost or 127.0.0.1 (does this support IPv6?)
+
  | rowspan="2"| {{Type|Array}}
−
|-
+
  | {{Type|String}} (128)
−
  | Server Port
+
  |
−
| Unsigned Short
 
−
  | default is 25565
 
 
  |-
 
  |-
−
  | Next State
+
  | Description
−
  | VarInt Enum
+
  | {{Type|String}} (4096)
−
  | 1 for [[#Status|status]], 2 for [[#Login|login]]
+
  |
−
|}
+
|}
−
 
 
−
== Play ==
 
−
 
 
−
=== Clientbound ===
 
  
−
==== Join Game ====
+
==== Clientbound Server Links (configuration) ====
  
−
See [[Protocol Encryption]] for information on logging in.
+
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="7"| 0x23
+
  | rowspan="4"| 0x10
−
  |rowspan="7"| Play
+
  | rowspan="4"| Configuration
−
  |rowspan="7"| Client
+
  | rowspan="4"| Client
−
  | Entity ID
+
  | colspan="2"| Links Count
−
  | Int
+
  | colspan="2"| {{Type|VarInt}}
−
  | The player's Entity ID (EID)
+
  | The number of links in the following array.
 
  |-
 
  |-
−
  | Gamemode
+
  | rowspan="3"| Links
−
  | Unsigned Byte
+
  | Is built-in
−
  | 0: Survival, 1: Creative, 2: Adventure, 3: Spectator. Bit 3 (0x8) is the hardcore flag.
+
  | rowspan="3"| {{Type|Array}}
 +
| {{Type|Boolean}}
 +
| Determines if the following label is built-in (from enum) or custom (text component).
 
  |-
 
  |-
−
  | Dimension
+
  | Label
−
  | {{Change|Byte|Int}} Enum
+
  | {{Type|VarInt}} {{Type|Enum}} / {{Type|Text Component}}
−
  | -1: Nether, 0: Overworld, 1: End
+
  | See below.
 
  |-
 
  |-
−
  | Difficulty
+
  | URL
−
  | Unsigned Byte
+
  | {{Type|String}}
−
  | 0: peaceful, 1: easy, 2: normal, 3: hard
+
  | Valid URL.
 +
|}
 +
 
 +
 
 +
{| class="wikitable" {{added}}
 +
! ID
 +
! Name
 +
! Notes
 
  |-
 
  |-
−
  | Max Players
+
  | 0
−
  | Unsigned Byte
+
  | Bug Report
−
  | Used by the client to draw the player list
+
  | Displayed on connection error screen; included as a comment in the disconnection report.
 
  |-
 
  |-
−
  | Level Type
+
  | 1
−
  | String
+
  | Community Guidelines
−
  | default, flat, largeBiomes, amplified, default_1_1
+
|
 +
|-
 +
| 2
 +
| Support
 +
|
 +
|-
 +
| 3
 +
| Status
 +
|
 +
|-
 +
| 4
 +
| Feedback
 +
|
 +
|-
 +
| 5
 +
| Community
 +
|
 +
|-
 +
| 6
 +
| Website
 +
|
 +
|-
 +
| 7
 +
| Forums
 +
|
 +
|-
 +
| 8
 +
| News
 +
|
 +
|-
 +
| 9
 +
| Announcements
 +
  |  
 
  |-
 
  |-
−
| Reduced Debug Info
 
−
| Boolean
 
−
| If true, a Notchian client shows reduced information on the {{Minecraft Wiki|debug screen}}.
 
 
  |}
 
  |}
  
−
==== Entity Relative Move ====
+
=== Serverbound ===
 +
 
 +
No changes so far.
 +
 
 +
== Play ==
  
−
This packet is sent by the server when an entity moves less then 8 blocks; if an entity moves more than 8 blocks [[#Entity Teleport|Entity Teleport]] should be sent instead.
+
=== Clientbound ===
  
−
This packet allows at most 8 blocks movement in any direction, because short range is from -32768 to 32767. And 32768/(128*32)=8.
+
==== 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.
  
−
{| 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="5"| {{Change|0x15|0x25}}
+
  | rowspan="3"| 0x7A
−
  |rowspan="5"| Play
+
  | rowspan="3"| Configuration
−
  |rowspan="5"| Client
+
  | rowspan="3"| Client
−
  | Entity ID
+
  | colspan="2"| Details Count
−
  | VarInt
+
  | colspan="2"| {{Type|VarInt}} (32)
−
  |  
+
  | The number of details in the following array.
 
  |-
 
  |-
−
  | Delta X
+
  | rowspan="2"| Details
−
  | {{Change|Byte|Short}}
+
  | Title
−
  | Change in X position as {{Change|a [[Data Types#Fixed-point numbers|Fixed-Point number]]|(currentX * 32 - prevX * 32) * 128}}
+
| rowspan="2"| {{Type|Array}}
 +
  | {{Type|String}} (128)
 +
|
 
  |-
 
  |-
−
  | Delta Y
+
  | Description
−
  | {{Change|Byte|Short}}
+
  | {{Type|String}} (4096)
−
| Change in Y position as {{Change|a [[Data Types#Fixed-point numbers|Fixed-Point number]]|(currentY * 32 - prevY * 32) * 128}}
+
  |
−
|-
+
|}
−
| Delta Z
 
−
| {{Change|Byte|Short}}
 
−
| Change in Z position as {{Change|a [[Data Types#Fixed-point numbers|Fixed-Point number]]|(currentZ * 32 - prevZ * 32) * 128}}
 
−
|-
 
−
| On Ground
 
−
| Boolean
 
−
  |  
 
−
|}
 
  
−
==== Entity Look And Relative Move ====
+
==== Clientbound Server Links (play) ====
  
−
This packet is sent by the server when an entity rotates and moves. Since a short range is limited from -32768 to 32767, and movement is offset of fixed-point numbers, this packet allows at most 8 blocks movement in any direction. (-32768/(32*128) == -8)
+
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
 +
|-
 +
| rowspan="4"| 0x7B
 +
| 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.
 +
|}
 +
 
 +
{| class="wikitable" {{added}}
 +
! ID
 +
! Name
 
  ! Notes
 
  ! Notes
 
  |-
 
  |-
−
  |rowspan="7"| {{Change|0x17|0x26}}
+
  | 0
−
  |rowspan="7"| Play
+
| Bug Report
−
  |rowspan="7"| Client
+
| Displayed on connection error screen; included as a comment in the disconnection report.
−
  | Entity ID
+
|-
−
  | VarInt
+
  | 1
 +
| Community Guidelines
 +
  |  
 +
|-
 +
  | 2
 +
  | Support
 
  |  
 
  |  
 
  |-
 
  |-
−
  | Delta X
+
  | 3
−
  | {{Change|Byte|Short}}
+
  | Status
−
  | Change in X position as {{Change|a [[Data Types#Fixed-point numbers|Fixed-Point number]]|(currentX * 32 - prevX * 32) * 128}}
+
  |  
 
  |-
 
  |-
−
  | Delta Y
+
  | 4
−
  | {{Change|Byte|Short}}
+
  | Feedback
−
  | Change in Y position as {{Change|a [[Data Types#Fixed-point numbers|Fixed-Point number]]|(currentY * 32 - prevY * 32) * 128}}
+
  |  
 
  |-
 
  |-
−
  | Delta Z
+
  | 5
−
  | {{Change|Byte|Short}}
+
  | Community
−
  | Change in Z position as {{Change|a [[Data Types#Fixed-point numbers|Fixed-Point number]]|(currentZ * 32 - prevZ * 32) * 128}}
+
  |  
 
  |-
 
  |-
−
  | Yaw
+
  | 6
−
  | Angle
+
  | Website
−
  | New angle, not a delta
+
  |  
 
  |-
 
  |-
−
  | Pitch
+
  | 7
−
  | Angle
+
  | Forums
−
  | New angle, not a delta
+
  |  
 
  |-
 
  |-
−
  | On Ground
+
  | 8
−
  | Boolean
+
  | News
 
  |  
 
  |  
−
|}
 
−
 
−
==== Attach Entity ====
 
−
 
−
This packet is sent when a player has been attached to an entity (e.g. Minecart).
 
−
 
−
{| class="wikitable"
 
−
! Packet ID
 
−
! State
 
−
! Bound To
 
−
! Field Name
 
−
! Field Type
 
−
! Notes
 
 
  |-
 
  |-
−
  |rowspan="3"| {{change|0x1B|0x3A}}
+
  | 9
−
|rowspan="3"| Play
+
  | Announcements
−
|rowspan="3"| Client
+
  |  
−
| Entity ID
 
−
  | Int
 
−
  | Attached entity's EID
 
 
  |-
 
  |-
−
| Vehicle ID
 
−
| Int
 
−
| Vechicle's Entity ID. Set to -1 to detach
 
−
|-style="background-color: #f4cccc; text-decoration: line-through;"
 
−
| Leash
 
−
| Boolean
 
−
| If true leashes the entity to the vehicle
 
 
  |}
 
  |}
  
Line 259: Line 279:
 
No changes so far.
 
No changes so far.
  
−
== Status ==
+
[[Category:Minecraft Modern]]
−
 
 
−
=== Clientbound ===
 
−
 
 
−
No changes so far.
 
−
 
 
−
=== Serverbound ===
 
−
 
 
−
No changes so far.
 
−
 
 
−
== Login ==
 
−
 
 
−
=== Clientbound ===
 
−
 
 
−
No changes so far.
 
−
 
 
−
=== Serverbound ===
 
−
 
 
−
No changes so far.
 

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.

Retrieved from "https://wiki.vg/index.php?title=Pre-release_protocol&oldid=19307"