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|1.9.4, protocol 110]]) to the current pre-release (currently [[Protocol version numbers|16w21b, protocol 203]]). 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|1.18, protocol 757]]) to the current pre-release (currently [[Protocol version numbers|1.18.1-rc2, protocol {{Snapshot PVN|1073741887}}]]). 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 ===
  
{| class="wikitable"
+
No changes so far.
! ID
 
! Packet name
 
!colspan="2"| Documentation
 
|-
 
!colspan="4"| Handshaking serverbound
 
{{PacketList|0x00|Handshake}}
 
|-
 
!colspan="4"| Play clientbound
 
{{PacketList|0x19|Named Sound Effect}}
 
{{PacketList|0x46|Sound Effect}}
 
|}
 
  
 
== New/modified data types ==
 
== New/modified data types ==
  
=== Mobs ===
+
No changes so far.
  
Mobs are spawned via [[Protocol#Spawn_Mob|Spawn Mob]]. There are two extra mob types in the code that refer to mobs classes that can never spawn: Mob and Monster (they are always subclasses, aka another more specific type).
+
== Entity Metadata ==
  
{| class="wikitable"
+
No changes so far.
|-
 
! Type
 
! Name
 
! x, z
 
! y
 
|-
 
| 48
 
| Mob
 
| N/A
 
| N/A
 
|-
 
| 49
 
| Monster
 
| N/A
 
| N/A
 
|-
 
| 50
 
| Creeper
 
| 0.6
 
| 1.8
 
|-
 
| 51
 
| Skeleton
 
| 0.6
 
| 1.95
 
|-
 
| 52
 
| Spider
 
| 1.4
 
| 0.9
 
|-
 
| 53
 
| Giant Zombie
 
| 0.6 * 6
 
| 1.8 * 6
 
|-
 
| 54
 
| Zombie
 
| 0.6
 
| 1.8
 
|-
 
| 55
 
| Slime
 
| 0.51000005 * size
 
| 0.51000005 * size
 
|-
 
| 56
 
| Ghast
 
| 4
 
| 4
 
|-
 
| 57
 
| Zombie Pigman
 
| 0.6
 
| 1.8
 
|-
 
| 58
 
| Enderman
 
| 0.6
 
| 2.9
 
|-
 
| 59
 
| Cave Spider
 
| 0.7
 
| 0.5
 
|-
 
| 60
 
| Silverfish
 
| 0.4
 
| 0.3
 
|-
 
| 61
 
| Blaze
 
| 0.6
 
| 1.8
 
|-
 
| 62
 
| Magma Cube
 
| 0.51000005 * size
 
| 0.51000005 * size
 
|-
 
| 63
 
| Ender Dragon
 
| 16.0
 
| 8.0
 
|-
 
| 64
 
| Wither
 
| 0.9
 
| 3.5
 
|-
 
| 65
 
| Bat
 
| 0.5
 
| 0.9
 
|-
 
| 66
 
| Witch
 
| 0.6
 
| 1.8
 
|-
 
| 67
 
| Endermite
 
| 0.4
 
| 0.3
 
|-
 
| 68
 
| Guardian
 
| 0.85
 
| 0.85
 
|-
 
| 69
 
| Shulker
 
| 1
 
| 1
 
|-
 
| 90
 
| Pig
 
| 0.9
 
| 0.9
 
|-
 
| 91
 
| Sheep
 
| 0.9
 
| 1.3
 
|-
 
| 92
 
| Cow
 
| 0.9
 
| 1.3
 
|-
 
| 93
 
| Chicken
 
| 0.4
 
| 0.7
 
|-
 
| 94
 
| Squid
 
| 0.95
 
| 0.95
 
|-
 
| 95
 
| Wolf
 
| 0.6
 
| 0.8
 
|-
 
| 96
 
| Mooshroom
 
| 0.9
 
| 1.3
 
|-
 
| 97
 
| Snowman
 
| 0.7
 
| 1.9
 
|-
 
| 98
 
| Ocelot
 
| 0.6
 
| 0.8
 
|-
 
| 99
 
| Iron Golem
 
| 1.4
 
| 2.9
 
|-
 
| 100
 
| Horse
 
| 1.4
 
| 1.6
 
|-
 
| 101
 
| Rabbit
 
| 0.6
 
| 0.7
 
|- style="background-color: #d9ead3;"
 
| 102
 
| Polar Bear
 
| 1.3
 
| 1.4
 
|-
 
| 120
 
| Villager
 
| 0.6
 
| 1.8
 
|}
 
  
=== Entity Metadata ===
+
=== Entity ===
  
Note that entity metadata is a totally distinct concept from block metadata. All entities must send at least one item of metadata, in most cases this will be the health item.
+
No changes so far.
  
An Entity Metadata is an array of entries, each of which looks like the following:
+
== Block Actions ==
 
 
{| class="wikitable"
 
! Name
 
! Type
 
! Meaning
 
|-
 
| Index
 
| Unsigned Byte
 
| Unique index key determining the meaning of the following value, see the table below. If this is <code>0xff</code> then the it is the end of the Entity Metadata array and no more is read.
 
|-
 
| Type
 
| Optional Byte Enum
 
| Only if Index is not <code>0xff</code>; the type of the index, see the table below
 
|-
 
| Value
 
| Optional ''value of Type''
 
| Only if Index is not <code>0xff</code>: the value of the metadata field
 
|}
 
 
 
{| class="wikitable"
 
! Value of Type field
 
! [[Data types|Type]] of Value field
 
! Notes
 
|-
 
| 0
 
| Byte
 
|
 
|-
 
| 1
 
| VarInt
 
|
 
|-
 
| 2
 
| Float
 
|
 
|-
 
| 3
 
| String
 
|
 
|-
 
| 4
 
| [[Chat]]
 
|
 
|-
 
| 5
 
| [[Slot]]
 
|
 
|-
 
| 6
 
| Boolean
 
|
 
|-
 
| 7
 
| Rotation
 
| 3 floats: rotation on x, rotation on y, rotation on z
 
|-
 
| 8
 
| [[Data Types#Position|Position]]
 
|
 
|-
 
| 9
 
| OptPosition (Boolean + Optional Position)
 
| Position is present if the Boolean is set to true
 
|-
 
| 10
 
| Direction (VarInt)
 
| (Down = 0, Up = 1, North = 2, South = 3, West = 4, East = 5)
 
|-
 
| 11
 
| OptUUID (Boolean + Optional UUID)
 
| UUID is present if the Boolean is set to true
 
|-
 
| 12
 
| BlockID (VarInt)
 
| <code><nowiki>id &lt;&lt; 4 | data</nowiki></code>
 
|}
 
 
 
Entity classes also recursively use fields from classes they extend.
 
 
 
{| class="wikitable"
 
! Entity class
 
! Index
 
! Type
 
! style="width: 250px" colspan="2" |  Meaning
 
|-
 
|rowspan="13"| Entity
 
|rowspan="8"| 0
 
|rowspan="8"| Byte
 
! Bit Mask !! Meaning
 
|-
 
| 0x01 || On Fire
 
|-
 
| 0x02 || Crouched
 
|-
 
| 0x08 || Sprinting
 
|-
 
| 0x10 || Eating/Drinking/Blocking
 
|-
 
| 0x20 || Invisible
 
|-
 
| 0x40 || Glowing Effect
 
|-
 
| 0x80 || Flying with Elytra
 
|-
 
| 1
 
| VarInt
 
| colspan="2" | Air
 
|-
 
| 2
 
| String
 
| colspan="2" | Custom Name
 
|-
 
| 3
 
| Boolean
 
| colspan="2" | Is Custom Name Visible
 
|-
 
| 4
 
| Boolean
 
| colspan="2" | Is Silent
 
|- style="background-color: #d9ead3;"
 
| 5
 
| Boolean
 
| colspan="2" | No Gravity
 
|-
 
| Potion <sup>extends Entity</sup>
 
| {{change|5|6}}
 
| [[Slot]]
 
| colspan="2" | Potion which is thrown
 
|-
 
| FallingBlock <sup>extends Entity</sup>
 
| {{change|5|6}}
 
| [[Data Types#Position|Position]]
 
| colspan="2" | Spawn Position
 
|-
 
|rowspan="4"| AreaEffectButt <sup>extends Entity</sup>
 
| {{change|5|6}}
 
| Float
 
| colspan="2" | Radius
 
|-
 
| {{change|6|7}}
 
| VarInt
 
| colspan="2" | Color (only for mob spell particle)
 
|-
 
| {{change|7|8}}
 
| Boolean
 
| colspan="2" | Ignore radius and show effect as single point, not area
 
|-
 
| {{change|8|9}}
 
| VarInt
 
| colspan="2" | Particle ID
 
|-
 
| Arrow <sup>extends Entity</sup>
 
| {{change|5|6}}
 
| Byte
 
| colspan="2" | Is Critical
 
|-
 
| TippedArrow <sup>extends Arrow</sup>
 
| {{change|6|7}}
 
| VarInt
 
| colspan="2" | Color
 
|-
 
|rowspan="6"| Boat <sup>extends Entity</sup>
 
| {{change|5|6}}
 
| VarInt
 
| colspan="2" | Time Since Last Hit
 
|-
 
| {{change|6|7}}
 
| VarInt
 
| colspan="2" | Forward Direction
 
|-
 
| {{change|7|8}}
 
| Float
 
| colspan="2" | Damage Taken
 
|-
 
| {{change|8|9}}
 
| VarInt
 
| colspan="2" | Type
 
|-
 
| {{change|9|10}}
 
| Boolean
 
| colspan="2" | Right paddle turning
 
|-
 
| {{change|10|11}}
 
| Boolean
 
| colspan="2" | Left paddle turning
 
|-
 
|rowspan="2"| EnderCrystal <sup>extends Entity</sup>
 
| {{change|5|6}}
 
| OptPosition
 
| colspan="2" | Beam Target
 
|-
 
| {{change|6|7}}
 
| Boolean
 
| colspan="2" | Show Bottom
 
|-
 
| Fireball <sup>extends Entity</sup>
 
|colspan="4"| ''no additional metadata''
 
|-
 
| WitherSkull <sup>extends Fireball</sup>
 
| {{change|5|6}}
 
| Boolean
 
| colspan="2" | Invulnerable
 
|-
 
| Fireworks <sup>extends Entity</sup>
 
| {{change|5|6}}
 
| [[Slot]]
 
| colspan="2" | Firework Info
 
|-
 
| Hanging <sup>extends Entity</sup>
 
|colspan="4"| ''no additional metadata''
 
|-
 
|rowspan="2"| ItemFrame <sup>extends Hanging</sup>
 
| {{change|5|6}}
 
| [[Slot]]
 
| colspan="2" | Item
 
|-
 
| {{change|6|7}}
 
| VarInt
 
| colspan="2" | Rotation
 
|-
 
| Item <sup>extends Entity</sup>
 
| {{change|5|6}}
 
| [[Slot]]
 
| colspan="2" | Item
 
|-
 
|rowspan="5"| Living <sup>extends Entity</sup>
 
| {{change|5|6}}
 
| Byte
 
| colspan="2" | Likely used to limit placing blocks from both hands at the same time.
 
|-
 
| {{change|6|7}}
 
| Float
 
| colspan="2" | Health
 
|-
 
| {{change|7|8}}
 
| VarInt
 
| colspan="2" | Potion Effect Color
 
|-
 
| {{change|8|9}}
 
| Boolean
 
| colspan="2" | Is Potion Effect Ambient
 
|-
 
| {{change|9|10}}
 
| VarInt
 
| colspan="2" | Number of Arrows in Entity
 
|-
 
|rowspan="8"| ArmorStand <sup>extends Living</sup>
 
|-
 
| {{change|10|11}}
 
| Byte
 
| colspan="2" | Status bit mask
 
|-
 
| {{change|11|12}}
 
| Vector3F
 
| colspan="2" | Head rotation
 
|-
 
| {{change|12|13}}
 
| Vector3F
 
| colspan="2" | Body rotation
 
|-
 
| {{change|13|14}}
 
| Vector3F
 
| colspan="2" | Left arm rotation
 
|-
 
| {{change|14|15}}
 
| Vector3F
 
| colspan="2" | Right arm rotation
 
|-
 
| {{change|15|16}}
 
| Vector3F
 
| colspan="2" | Left leg rotation
 
|-
 
| {{change|16|17}}
 
| Vector3F
 
| colspan="2" | Right leg rotation
 
|-
 
| Insentient <sup>extends Living</sup>
 
| {{change|10|11}}
 
| Byte
 
| colspan="2" | Status bit mask (NoAI, Left handed)
 
|-
 
| Ambient <sup>extends Insentient</sup>
 
|colspan="4"| ''no additional metadata''
 
|-
 
| Bat <sup>extends Ambient</sup>
 
| {{change|11|12}}
 
| Byte
 
| colspan="2" | Is Hanging
 
|-
 
| Creature <sup>extends Insentient</sup>
 
|colspan="4"| ''no additional metadata''
 
|-
 
| Ageable <sup>extends Creature</sup>
 
| {{change|11|12}}
 
| Boolean
 
| colspan="2" | Is Baby
 
|- style="background-color: #d9ead3;"
 
| PolarBear <sup>extends Ageable</sup>
 
| 13
 
| Boolean
 
| colspan="2" | Is Standing
 
|-
 
| Animal <sup>extends Ageable</sup>
 
|colspan="4"| ''no additional metadata''
 
|-
 
|rowspan="5"| Horse <sup>extends Animal</sup>
 
| {{change|12|13}}
 
| Byte
 
| colspan="2" | Status bit mask
 
|-
 
| {{change|13|14}}
 
| VarInt
 
| colspan="2" | Type
 
|-
 
| {{change|14|15}}
 
| VarInt
 
| colspan="2" | Variant
 
|-
 
| {{change|15|16}}
 
| OptUUID
 
| colspan="2" | Owner's UUID
 
|-
 
| {{change|16|17}}
 
| VarInt
 
| colspan="2" | Armor
 
|-
 
| Pig <sup>extends Animal</sup>
 
| {{change|12|13}}
 
| Boolean
 
| colspan="2" | Has Saddle
 
|-
 
| Rabbit <sup>extends Animal</sup>
 
| {{change|12|13}}
 
| VarInt
 
| colspan="2" | Type
 
|-
 
| Sheep <sup>extends Animal</sup>
 
| {{change|12|13}}
 
| Byte
 
| colspan="2" | Status bit mask
 
|-
 
|rowspan="2"| TameableAnimal <sup>extends Animal</sup>
 
| {{change|12|13}}
 
| Byte
 
| colspan="2" | Status bit mask (sitting, tamed)
 
|-
 
| {{change|13|14}}
 
| OptUUID
 
| colspan="2" | Owner's UUID
 
|-
 
| Ocelot <sup>extends TameableAnimal</sup>
 
| {{change|14|15}}
 
| VarInt
 
| colspan="2" | Type
 
|-
 
|rowspan="3"| Wolf <sup>extends TameableAnimal</sup>
 
| {{change|14|15}}
 
| Float
 
| colspan="2" | Damage Taken (used for tail rotation)
 
|-
 
| {{change|15|16}}
 
| Boolean
 
| colspan="2" | Is Begging
 
|-
 
| {{change|16|17}}
 
| VarInt
 
| colspan="2" | Collar Color
 
|-
 
| Villager <sup>extends Ageable</sup>
 
| {{change|12|13}}
 
| VarInt
 
| colspan="2" | Profession (Farmer = 0, Librarian = 1, Priest = 2, Blacksmith = 3, Butcher = 4)
 
|-
 
| Golem <sup>extends Creature</sup>
 
|colspan="4"| ''no additional metadata''
 
|-
 
| IronGolem <sup>extends Golem</sup>
 
| {{change|11|12}}
 
| Byte
 
| colspan="2" | Is Player Created
 
|-
 
|rowspan="3"| Shulker <sup>extends Golem</sup>
 
| {{change|11|12}}
 
| Direction
 
| colspan="2" | Facing Direction
 
|-
 
| {{change|12|13}}
 
| OptPosition
 
| colspan="2" | Attachment Position
 
|-
 
| {{change|13|14}}
 
| Byte
 
| colspan="2" | Shield Height
 
|-
 
| Monster <sup>extends Creature</sup>
 
|colspan="4"| ''no additional metadata''
 
|-
 
| Blaze <sup>extends Monster</sup>
 
| {{change|11|12}}
 
| Byte
 
| colspan="2" | Is On Fire
 
|-
 
|rowspan="3"| Creeper <sup>extends Monster</sup>
 
| {{change|11|12}}
 
| VarInt
 
| colspan="2" | State (-1 = Idle, 1 = Fuse)
 
|-
 
| {{change|12|13}}
 
| Boolean
 
| colspan="2" | Is Powered
 
|-
 
| {{change|13|14}}
 
| Boolean
 
| colspan="2" | Is Ignited
 
|-
 
|rowspan="2"| Guardian <sup>extends Monster</sup>
 
| {{change|11|12}}
 
| Byte
 
| colspan="2" | Status bit mask (elderly, retracting spikes)
 
|-
 
| {{change|12|13}}
 
| VarInt
 
| colspan="2" | Target EID
 
|-
 
|rowspan="2"| Skeleton <sup>extends Monster</sup>
 
| {{change|11|12}}
 
| VarInt
 
| colspan="2" | Type <span style="background-color: #d9ead3;">(0 &#61; Default, 1 &#61; Wither, 2 &#61; Stray)</span>
 
|-
 
| {{change|12|13}}
 
| Boolean
 
| colspan="2" | Is swinging arms
 
|-
 
| Spider <sup>extends Monster</sup>
 
| {{change|11|12}}
 
| Byte
 
| colspan="2" | Is Climbing
 
|-
 
| Witch <sup>extends Monster</sup>
 
| {{change|11|12}}
 
| Boolean
 
| colspan="2" | Is Aggresive
 
|-
 
|rowspan="4"| Wither <sup>extends Monster</sup>
 
| {{change|11|12}}
 
| VarInt
 
| colspan="2" | First Head's Target
 
|-
 
| {{change|12|13}}
 
| VarInt
 
| colspan="2" | Second Head's Target
 
|-
 
| {{change|13|14}}
 
| VarInt
 
| colspan="2" | Third Head's Target
 
|-
 
| {{change|14|15}}
 
| VarInt
 
| colspan="2" | Invulnerable Time
 
|-
 
|rowspan="4"| Zombie <sup>extends Monster</sup>
 
| {{change|11|12}}
 
| Boolean
 
| colspan="2" | Is Baby
 
|-
 
| {{change|12|13}}
 
| VarInt
 
| colspan="2" | {{change|Is Villager (Profession)|Zombie Type (0 &#61; Default, 1-5 &#61; Villager Profession, 6 &#61; Husk)}}
 
|-
 
| {{change|13|14}}
 
| Boolean
 
| colspan="2" | Is Converting
 
|-
 
| {{change|14|15}}
 
| Boolean
 
| colspan="2" | Are Hands Rised Up
 
|-
 
|rowspan="2"| Enderman <sup>extends Monster</sup>
 
| {{change|11|12}}
 
| Block ID
 
| colspan="2" | Carried Block
 
|-
 
| {{change|12|13}}
 
| Boolean
 
| colspan="2" | Is Screaming
 
|-
 
| EnderDragon <sup>extends Insentient</sup>
 
| {{change|11|12}}
 
| VarInt
 
| colspan="2" | Dragon Phase
 
|-
 
| Flying <sup>extends Insentient</sup>
 
|colspan="4"| ''no additional metadata''
 
|-
 
| Ghast <sup>extends Flying</sup>
 
| {{change|11|12}}
 
| Boolean
 
| colspan="2" | Is Attacking
 
|-
 
| Slime <sup>extends Insentient</sup>
 
| {{change|11|12}}
 
| VarInt
 
| colspan="2" | Size
 
|-
 
|rowspan="6"| Minecart <sup>extends Entity</sup>
 
| {{change|5|6}}
 
| VarInt
 
| colspan="2" | Shaking Power
 
|-
 
| {{change|6|7}}
 
| VarInt
 
| colspan="2" | Shaking Direction
 
|-
 
| {{change|7|8}}
 
| Float
 
| colspan="2" | Shaking Multiplier
 
|-
 
| {{change|8|9}}
 
| VarInt
 
| colspan="2" | Block ID and Meta
 
|-
 
| {{change|9|10}}
 
| VarInt
 
| colspan="2" | Block Y Position
 
|-
 
| {{change|10|11}}
 
| Boolean
 
| colspan="2" | Show Block
 
|-
 
|rowspan="2"| MinecartCommandBlock <sup>extends Minecart</sup>
 
| {{change|11|12}}
 
| String
 
| colspan="2" | Command
 
|-
 
| {{change|12|13}}
 
| [[Chat]]
 
| colspan="2" | Last Output
 
|-
 
| MinecartFurnace <sup>extends Minecart</sup>
 
| {{change|11|12}}
 
| Boolean
 
| colspan="2" | Is Powered
 
|-
 
| TNTPrimed <sup>extends Entity</sup>
 
| {{change|5|6}}
 
| VarInt
 
| colspan="2" | Fuse Time
 
|}
 
 
 
== <code>MC|Struct</code> plugin channel ==
 
 
 
''Client to server''
 
 
 
Sets information about the {{change|inaccessible|new}} {{Minecraft Wiki|Structure block}}.
 
 
 
{| class="wikitable"
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
| X || Int || Tile entity location
 
|-
 
| Y || Int || Tile entity location
 
|-
 
| Z || Int || Tile entity location
 
|-
 
| Action
 
| Byte
 
| See below
 
|-
 
| Mode
 
| String enum
 
| One of "SAVE", "LOAD", "CORNER", "DATA".
 
|-
 
| Name
 
| String
 
|
 
|-
 
| Offset X || Int
 
|style="background-color: #d9ead3;"|Between -32 and 32
 
|-
 
| Offset Y || Int
 
|style="background-color: #d9ead3;"|Between -32 and 32
 
|-
 
| Offset Z || Int
 
|style="background-color: #d9ead3;"|Between -32 and 32
 
|-
 
| Size X || Int
 
|style="background-color: #d9ead3;"|Between 0 and 32
 
|-
 
| Size Y || Int
 
|style="background-color: #d9ead3;"|Between 0 and 32
 
|-
 
| Size Z || Int
 
|style="background-color: #d9ead3;"|Between 0 and 32
 
|-
 
| Mirror
 
| String enum
 
| One of "NONE", "LEFT_RIGHT", "FRONT_BACK".
 
|-
 
| Rotation
 
| String enum
 
| One of "NONE", "CLOCKWISE_90", "CLOCKWISE_180", "COUNTERCLOCKWISE_90".
 
|-
 
| Metadata
 
| String
 
|
 
|-
 
| Ignore entities
 
| Boolean
 
|
 
|-
 
|style="background-color: #d9ead3;"|Show air
 
|style="background-color: #d9ead3;"|Boolean
 
|style="background-color: #d9ead3;"|
 
|-
 
|style="background-color: #d9ead3;"|Show bounding box
 
|style="background-color: #d9ead3;"|Boolean
 
|style="background-color: #d9ead3;"|
 
|-
 
|style="background-color: #d9ead3;"|Integrity
 
|style="background-color: #d9ead3;"|Float
 
|style="background-color: #d9ead3;"|Between 0 and 1
 
|-
 
|style="background-color: #d9ead3;"|Seed
 
|style="background-color: #d9ead3;"|VarLong
 
|style="background-color: #d9ead3;"|
 
|}
 
 
 
Possible modes:
 
 
 
* 2 - Save the structure
 
* 3 - Load the structure
 
* 4 - Detect size
 
  
 +
No changes so far.
  
== Handshaking ==
+
== Inventories ==
 
 
=== Clientbound ===
 
  
 
No changes so far.
 
No changes so far.
  
=== Serverbound ===
+
== Plugin Channels ==
  
 
No changes so far.
 
No changes so far.
 
==== Handshake ====
 
 
This causes the server to switch into the target state.
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="4"| 0x00
 
|rowspan="4"| Handshaking
 
|rowspan="4"| Server
 
| Protocol Version
 
| VarInt
 
| See [[protocol version numbers]] (currently {{change|110|203}})
 
|-
 
| 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.
 
|-
 
| Server Port
 
| Unsigned Short
 
| Default is 25565.  The Notchian server does not use this information.
 
|-
 
| Next State
 
| VarInt Enum
 
| 1 for [[#Status|status]], 2 for [[#Login|login]]
 
|}
 
 
  
 
== Play ==
 
== Play ==
Line 908: Line 43:
 
=== Clientbound ===
 
=== Clientbound ===
  
==== Named Sound Effect ====
+
No changes so far.
{{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="7"| 0x19
 
|rowspan="7"| Play
 
|rowspan="7"| Client
 
| Sound Name
 
| String
 
| All known sound effect names can be seen [http://pokechu22.github.io/Burger/1.9.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
 
| {{change|Unsigned Byte|Float}}
 
| 63 is 100%, can be more
 
|}
 
 
 
==== Sound Effect ====
 
 
 
This packet is used to play a number of [http://pokechu22.github.io/Burger/1.9.html#sounds hardcoded sound events]. For custom sounds, use [[#Named Sound Effect|Named Sound Effect]] ([[#Play|Play]], 0x19, clientbound).
 
 
 
{{Warning|Numeric sound effect IDs are liable to change between versions}}
 
 
 
{| class="wikitable"
 
! Packet ID
 
! State
 
! Bound To
 
! Field Name
 
! Field Type
 
! Notes
 
|-
 
|rowspan="7"| 0x46
 
|rowspan="7"| Play
 
|rowspan="7"| Client
 
| Sound ID
 
| VarInt
 
| ID of hardcoded sound event ([http://pokechu22.github.io/Burger/1.9.html#sounds events])
 
|-
 
| 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
 
| {{change|Unsigned Byte|Float}}
 
| Float multiplied by 63.5, capped between 0.5 and 2.0 by Notchian clients
 
|}
 
  
 
=== Serverbound ===
 
=== Serverbound ===
Line 1,022: Line 68:
  
 
No changes so far.
 
No changes so far.
 +
 +
 +
[[Category:Minecraft Modern]]

Latest revision as of 17:34, 9 December 2021

This page documents the changes from the last stable Minecraft release (currently 1.18, protocol 757) to the current pre-release (currently 1.18.1-rc2, protocol Snapshot 63). 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.