Difference between revisions of "Pre-release protocol"

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This page documents the changes from the [[Protocol|last stable Minecraft release]] (currently [[Protocol version numbers|1.18.2, protocol 758]]) to the current pre-release (currently [[Protocol version numbers|22w16b, protocol 759]]). 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|1.19.2, protocol 760]]) to the current pre-release (currently [[Protocol version numbers|22w16b, protocol {{Snapshot PVN|1073741905}}]]). 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 13: Line 13:
 
=== Packets ===
 
=== Packets ===
  
Packet ID shifts have not been included.
+
No changes so far.
 
 
{| class="wikitable"
 
! ID
 
! Packet name
 
!colspan="2"| Documentation
 
|-
 
!colspan="4"| Play clientbound
 
{{PacketList|0x02|Spawn Living Entity|pre=removed}}
 
{{PacketList|0x03|Spawn Painting|pre=removed}}
 
{{PacketList|0x05|Sculk Vibration Signal|pre=removed}}
 
{{PacketList|0x05|Acknowledge Block Changes|rel=added}}
 
{{PacketList|0x08|Acknowledge Player Digging|pre=removed}}
 
 
 
|-
 
!colspan="4"| Play serverbound
 
|-
 
!colspan="4"| Handshaking serverbound
 
|}
 
  
 
== New/modified data types ==
 
== New/modified data types ==
Line 39: Line 21:
 
== Entity Metadata ==
 
== Entity Metadata ==
  
=== Goat ===
+
No changes so far.
 
 
{{Metadata inherit|Goat}}
 
 
 
{| class="wikitable"
 
! Index
 
! Type
 
!style="width: 250px;" colspan="2"| Meaning
 
! Default
 
|-
 
| {{Metadata id|}}
 
| Boolean
 
|colspan="2"| Is Screaming Goat
 
| false
 
|- {{added}}
 
| {{Metadata id|}}
 
| Boolean
 
|colspan="2"| Has Left Horn
 
| true
 
|- {{added}}
 
| {{Metadata id|}}
 
| Boolean
 
|colspan="2"| Has Right Horn
 
| true
 
|-
 
|}
 
 
 
=== Painting ===
 
 
 
{{Metadata inherit|Painting}}
 
 
 
{| class="wikitable"
 
! Index
 
! Type
 
!style="width: 250px;" colspan="2"| Meaning
 
! Default
 
|- {{added}}
 
| {{Metadata id|}}
 
| VarInt
 
|colspan="2"| PaintingVariant
 
| 0
 
|}
 
 
 
=== Player ===
 
 
 
{{Metadata inherit|Player}}
 
 
 
{| class="wikitable"
 
! Index
 
! Type
 
!style="width: 250px;" colspan="2"| Meaning
 
! Default
 
|-
 
| {{Metadata id|}}
 
| Float
 
|colspan="2"| Additional Hearts
 
| 0.0
 
|-
 
| {{Metadata id|}}
 
| VarInt
 
|colspan="2"| Score
 
| 0
 
|-
 
|rowspan="10"| {{Metadata id|}}
 
|rowspan="10"| Byte
 
|colspan="2"| The Displayed Skin Parts bit mask that is sent in [[Protocol#Client Settings|Client Settings]]
 
|rowspan="10"| 0
 
|-
 
! Bit mask !! Meaning
 
|-
 
| 0x01 || Cape enabled
 
|-
 
| 0x02 || Jacket enabled
 
|-
 
| 0x04 || Left sleeve enabled
 
|-
 
| 0x08 || Right sleeve enabled
 
|-
 
| 0x10 || Left pants leg enabled
 
|-
 
| 0x20 || Right pants leg enabled
 
|-
 
| 0x40 || Hat enabled
 
|-
 
| 0x80 || ''Unused''
 
|-
 
| {{Metadata id|}}
 
| Byte
 
|colspan="2"| Main hand (0 : Left, 1 : Right)
 
| 1
 
|-
 
| {{Metadata id|}}
 
| [[NBT]]
 
|colspan="2"| Left shoulder entity data (for occupying parrot)
 
| Empty
 
|-
 
| {{Metadata id|}}
 
| [[NBT]]
 
|colspan="2"| Right shoulder entity data (for occupying parrot)
 
| Empty
 
|- {{added}}
 
| {{Metadata id|}}
 
| Global Position
 
|colspan="2"| Optional Last Death Location (used for respawn compass)
 
| Empty
 
|-}
 
 
 
  
 
=== Entity ===
 
=== Entity ===
Line 167: Line 43:
 
=== Clientbound ===
 
=== Clientbound ===
  
==== Spawn Entity ====
+
No changes so far.
 
 
Sent by the server when a vehicle or other non-living entity is created.
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="13"| 0x00
 
|rowspan="13"| Play
 
|rowspan="13"| Client
 
| Entity ID
 
| VarInt
 
| Entity ID.
 
|-
 
| Object UUID
 
| UUID
 
|
 
|-
 
| Type
 
| VarInt
 
| The type of entity (same as in [[#Spawn Living Entity|Spawn Living Entity]]).
 
|-
 
| X
 
| Double
 
|
 
|-
 
| Y
 
| Double
 
|
 
|-
 
| Z
 
| Double
 
|
 
|-
 
| Pitch
 
| Angle
 
| To get the real pitch, you must divide this by (256.0F / 360.0F)
 
|-
 
| Yaw
 
| Angle
 
| To get the real yaw, you must divide this by (256.0F / 360.0F)
 
|- {{added}}
 
| Head Yaw
 
| Angle
 
|-
 
| Data
 
| Int
 
| Meaning dependent on the value of the Type field, see [[Object Data]] for details.
 
|-
 
| Velocity X
 
| Short
 
|rowspan="3"| Same units as [[#Entity Velocity|Entity Velocity]].  Always sent, but only used when Data is greater than 0 (except for some entities which always ignore it; see [[Object Data]] for details).
 
|-
 
| Velocity Y
 
| Short
 
|-
 
| Velocity Z
 
| Short
 
|}
 
 
 
 
 
==== Acknowledge Block Changes ====
 
 
 
{| class="wikitable" {{Added}}
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="4"| 0x05
 
|rowspan="4"| Play
 
|rowspan="4"| Client
 
| Sequence ID
 
| VarInt
 
| Represents the sequence to acknowledge, this is used for properly syncing block changes to the client after interactions.
 
|-
 
|}
 
 
 
==== Block Action ====
 
 
 
This packet is used for a number of actions and animations performed by blocks, usually non-persistent.  The client ignores the provided block type and instead uses the block state in their world.
 
 
 
See [[Block Actions]] for a list of values.
 
 
 
{{Warning2|This packet uses a block ID, not a block state.}}
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="5"| 0x0B
 
|rowspan="5"| Play
 
|rowspan="5"| Client
 
| Location
 
| Position
 
| Block coordinates.
 
|-
 
| Action ID (Byte 1)
 
| Unsigned Byte
 
| Varies depending on block — see [[Block Actions]].
 
|-
 
| Action Param (Byte 2)
 
| Unsigned Byte
 
| Varies depending on block — see [[Block Actions]].
 
|-
 
| Block Type
 
| VarInt
 
| The block type ID for the block.  This must match the block at the given coordinates.
 
|- {{added}}
 
| Sequence
 
| VarInt
 
|}
 
 
 
 
 
==== Named Sound Effect ====
 
{{See also|#Sound Effect}}
 
 
 
Used to play a sound effect on the client. Custom sounds may be added by resource packs.
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="8"| {{change|0x19|0x16}}
 
|rowspan="8"| Play
 
|rowspan="8"| Client
 
| Sound Name
 
| Identifier
 
| All sound effect names as of 1.16.5 can be seen [https://pokechu22.github.io/Burger/1.16.5.html#sounds here].
 
|-
 
| Sound Category
 
| VarInt Enum
 
| The category that this sound will be played from ([https://gist.github.com/konwboj/7c0c380d3923443e9d55 current categories]).
 
|-
 
| Effect Position X
 
| Int
 
| Effect X multiplied by 8 ([[Data types#Fixed-point numbers|fixed-point number]] with only 3 bits dedicated to the fractional part).
 
|-
 
| Effect Position Y
 
| Int
 
| Effect Y multiplied by 8 ([[Data types#Fixed-point numbers|fixed-point number]] with only 3 bits dedicated to the fractional part).
 
|-
 
| Effect Position Z
 
| Int
 
| Effect Z multiplied by 8 ([[Data types#Fixed-point numbers|fixed-point number]] with only 3 bits dedicated to the fractional part).
 
|-
 
| Volume
 
| Float
 
| 1 is 100%, can be more.
 
|-
 
| Pitch
 
| Float
 
| Float between 0.5 and 2.0 by Notchian clients.
 
|- {{added}}
 
| Seed
 
| long
 
| Seed used to pick sound varient.
 
|}
 
 
 
 
 
==== Entity Sound Effect ====
 
 
 
Plays a sound effect from an entity.
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="6"| {{change|0x5C|0x59}}
 
|rowspan="6"| Play
 
|rowspan="6"| Client
 
| Sound ID
 
| VarInt
 
| ID of hardcoded sound event ([https://pokechu22.github.io/Burger/1.16.5.html#sounds events] as of 1.16.5).
 
|-
 
| Sound Category
 
| VarInt Enum
 
| The category that this sound will be played from ([https://gist.github.com/konwboj/7c0c380d3923443e9d55 current categories]).
 
|-
 
| Entity ID
 
| VarInt
 
|
 
|-
 
| Volume
 
| Float
 
| 1.0 is 100%, capped between 0.0 and 1.0 by Notchian clients.
 
|-
 
| Pitch
 
| Float
 
| Float between 0.5 and 2.0 by Notchian clients.
 
|- {{added}}
 
| Seed
 
| long
 
| Seed used to pick sound varient.
 
|}
 
 
 
 
 
==== Sound Effect ====
 
 
 
This packet is used to play a number of hardcoded sound events. For custom sounds, use [[#Named Sound Effect|Named Sound Effect]].
 
 
 
{{Warning|Numeric sound effect IDs are liable to change between versions}}
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="8"| {{change|0x5D|0x5A}}
 
|rowspan="8"| Play
 
|rowspan="8"| Client
 
| Sound ID
 
| VarInt
 
| ID of hardcoded sound event ([https://pokechu22.github.io/Burger/1.16.5.html#sounds events] as of 1.16.5).
 
|-
 
| Sound Category
 
| VarInt Enum
 
| The category that this sound will be played from ([https://gist.github.com/konwboj/7c0c380d3923443e9d55 current categories]).
 
|-
 
| Effect Position X
 
| Int
 
| Effect X multiplied by 8 ([[Data types#Fixed-point numbers|fixed-point number]] with only 3 bits dedicated to the fractional part).
 
|-
 
| Effect Position Y
 
| Int
 
| Effect Y multiplied by 8 ([[Data types#Fixed-point numbers|fixed-point number]] with only 3 bits dedicated to the fractional part).
 
|-
 
| Effect Position Z
 
| Int
 
| Effect Z multiplied by 8 ([[Data types#Fixed-point numbers|fixed-point number]] with only 3 bits dedicated to the fractional part).
 
|-
 
| Volume
 
| Float
 
| 1.0 is 100%, capped between 0.0 and 1.0 by Notchian clients.
 
|-
 
| Pitch
 
| Float
 
| Float between 0.5 and 2.0 by Notchian clients.
 
|- {{added}}
 
| Seed
 
| long
 
| Seed used to pick sound varient.
 
|}
 
 
 
==== Entity Effect ====
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="7"| {{change|0x65|0x62}}
 
|rowspan="7"| Play
 
|rowspan="7"| Client
 
| Entity ID
 
| VarInt
 
|
 
|-
 
| Effect ID
 
| VarInt
 
| See {{Minecraft Wiki|Status effect#Effect IDs|this table}}.
 
|-
 
| Amplifier
 
| Byte
 
| Notchian client displays effect level as Amplifier + 1.
 
|-
 
| Duration
 
| VarInt
 
| Duration in ticks.
 
|-
 
| Flags
 
| Byte
 
| Bit field, see below.
 
|- {{added}}
 
| Has Factor Data
 
| boolean
 
| Used in DARKNESS effect
 
|- {{added}}
 
| Factor Codec
 
| NBT Tag
 
| See below
 
|}
 
 
 
Within flags:
 
 
 
* 0x01: Is ambient - was the effect spawned from a beacon?  All beacon-generated effects are ambient.  Ambient effects use a different icon in the HUD (blue border rather than gray).  If all effects on an entity are ambient, the [[Entity_metadata#Living Entity|"Is potion effect ambient" living metadata field]] should be set to true.  Usually should not be enabled.
 
* 0x02: Show particles - should all particles from this effect be hidden?  Effects with particles hidden are not included in the calculation of the effect color, and are not rendered on the HUD (but are still rendered within the inventory).  Usually should be enabled.
 
* 0x04: Show icon - should the icon be displayed on the client?  Usually should be enabled.
 
 
 
Factor Data
 
{| class="wikitable"
 
!Name
 
!Type
 
!style="width: 250px;" colspan="2"| Notes
 
|-
 
| padding_duration
 
| TAG_INT
 
|
 
|-
 
| factor_target
 
| TAG_FLOAT
 
|
 
|-
 
| factor_current
 
| TAG_FLOAT
 
|
 
|-
 
| effect_changed_timestamp
 
| TAG_INT
 
|-
 
| factor_previous_frame
 
| TAG_FLOAT
 
|-
 
| had_effect_last_tick
 
| TAG_BOOLEAN
 
|}
 
  
 
=== Serverbound ===
 
=== Serverbound ===
  
==== Player Digging ====
+
No changes so far.
 
 
Sent when the player mines a block. A Notchian server only accepts digging packets with coordinates within a 6-unit radius between the center of the block and 1.5 units from the player's feet (''not'' their eyes).
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="4"| 0x1A
 
|rowspan="4"| Play
 
|rowspan="4"| Server
 
| Status
 
| VarInt Enum
 
| The action the player is taking against the block (see below).
 
|-
 
| Location
 
| Position
 
| Block position.
 
|-
 
| Face
 
| Byte Enum
 
| The face being hit (see below).
 
|- {{added}}
 
| Sequence
 
| VarInt
 
|}
 
 
 
Status can be one of seven values:
 
 
 
{| class="wikitable"
 
! Value
 
! Meaning
 
! Notes
 
|-
 
| 0
 
| Started digging
 
|
 
|-
 
| 1
 
| Cancelled digging
 
| Sent when the player lets go of the Mine Block key (default: left click).
 
|-
 
| 2
 
| Finished digging
 
| Sent when the client thinks it is finished.
 
|-
 
| 3
 
| Drop item stack
 
| Triggered by using the Drop Item key (default: Q) with the modifier to drop the entire selected stack (default: Control or Command, depending on OS). Location is always set to 0/0/0, Face is always set to -Y.
 
|-
 
| 4
 
| Drop item
 
| Triggered by using the Drop Item key (default: Q). Location is always set to 0/0/0, Face is always set to -Y.
 
|-
 
| 5
 
| Shoot arrow / finish eating
 
| Indicates that the currently held item should have its state updated such as eating food, pulling back bows, using buckets, etc. Location is always set to 0/0/0, Face is always set to -Y.
 
|-
 
| 6
 
| Swap item in hand
 
| Used to swap or assign an item to the second hand. Location is always set to 0/0/0, Face is always set to -Y.
 
|}
 
 
 
The Face field can be one of the following values, representing the face being hit:
 
 
 
{| class="wikitable"
 
|-
 
! Value
 
! Offset
 
! Face
 
|-
 
| 0
 
| -Y
 
| Bottom
 
|-
 
| 1
 
| +Y
 
| Top
 
|-
 
| 2
 
| -Z
 
| North
 
|-
 
| 3
 
| +Z
 
| South
 
|-
 
| 4
 
| -X
 
| West
 
|-
 
| 5
 
| +X
 
| East
 
|}
 
 
 
==== Set Beacon Effect ====
 
 
 
Changes the effect of the current beacon.
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="5"| 0x24
 
|rowspan="5"| Play
 
|rowspan="5"| Server
 
|- {{added}}
 
| Primary Effect Present
 
| Boolean
 
|-
 
| Primary Effect
 
| VarInt
 
| A [https://minecraft.gamepedia.com/Data_values#Potions Potion ID]. (Was a full Integer for the plugin message).
 
|- {{added}}
 
| Secondary Effect Present
 
| Boolean
 
|
 
|-
 
| Secondary Effect
 
| VarInt
 
| A [https://minecraft.gamepedia.com/Data_values#Potions Potion ID]. (Was a full Integer for the plugin message).
 
|}
 
 
 
==== Use Item ====
 
 
 
Sent when pressing the Use Item key (default: right click) with an item in hand.
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="2"| 0x2F
 
|rowspan="2"| Play
 
|rowspan="2"| Server
 
| Hand
 
| VarInt Enum
 
| Hand used for the animation. 0: main hand, 1: off hand.
 
|- {{added}}
 
| Sequence
 
| VarInt
 
|}
 
 
 
 
 
  
 
== Status ==
 
== Status ==

Revision as of 12:46, 30 August 2022

This page documents the changes from the last stable Minecraft release (currently 1.19.2, protocol 760) to the current pre-release (currently 22w16b, protocol Snapshot 81). 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

No changes so far.

New/modified data types

No changes so far.

Entity Metadata

No changes so far.

Entity

No changes so far.

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.

Status

Clientbound

No changes so far.

Serverbound

No changes so far.

Login

Clientbound

No changes so far.

Serverbound

No changes so far.