This page documents the changes from the last stable Minecraft release (currently 1.20.4, protocol 765) to the current pre-release (currently 24w03b, protocol Snapshot 172). 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
|
| Handshake serverbound
|
| 0x00 |
Handshake |
Current |
Pre
|
| Login clientbound
|
| 0x05 |
Cookie Request (login) |
|
Pre
|
| Login serverbound
|
| 0x04 |
Cookie Response (login) |
|
Pre
|
| Configuration clientbound
|
| 0x00 |
Cookie Request (configuration) |
|
Pre
|
0x00 0x01 |
Clientbound Plugin Message (configuration) |
Current |
(unchanged)
|
0x01 0x02 |
Disconnect (configuration) |
Current |
(unchanged)
|
0x02 0x03 |
Finish Configuration |
Current |
(unchanged)
|
0x03 0x04 |
Clientbound Keep Alive (configuration) |
Current |
(unchanged)
|
0x04 0x05 |
Ping (configuration) |
Current |
(unchanged)
|
0x05 0x06 |
Registry Data |
Current |
(unchanged)
|
0x06 0x07 |
Remove Resource Pack (configuration) |
Current |
(unchanged)
|
0x07 0x08 |
Add Resource Pack (configuration) |
Current |
(unchanged)
|
| 0x09 |
Store Cookie (configuration) |
|
Pre
|
| 0x0A |
Transfer (configuration) |
|
Pre
|
0x08 0x0B |
Feature Flags |
Current |
(unchanged)
|
0x09 0x0C |
Update Tags (configuration) |
Current |
(unchanged)
|
| Configuration serverbound
|
| 0x01 |
Cookie Response (configuration) |
|
Pre
|
0x01 0x02 |
Serverbound Plugin Message (configuration) |
Current |
(unchanged)
|
0x02 0x03 |
Finish Configuration |
Current |
(unchanged)
|
0x03 0x04 |
Serverbound Keep Alive (configuration) |
Current |
(unchanged)
|
0x04 0x05 |
Pong (configuration) |
Current |
(unchanged)
|
0x05 0x06 |
Resource Pack Response (configuration) |
Current |
(unchanged)
|
| Play clientbound
|
| 0x16 |
Cookie Request (Play) |
|
Pre
|
0x16 0x17 |
Set Cooldown |
Current |
(unchanged)
|
0x17 0x18 |
Chat Suggestions |
Current |
(unchanged)
|
0x18 0x19 |
Clientbound Plugin Message (play) |
Current |
(unchanged)
|
0x19 0x1A |
Damage Event |
Current |
(unchanged)
|
0x1A 0x1B |
Delete Message |
Current |
(unchanged)
|
0x1B 0x1C |
Disconnect (play) |
Current |
(unchanged)
|
0x1C 0x1D |
Disguised Chat Message |
Current |
(unchanged)
|
0x1D 0x1E |
Entity Event |
Current |
(unchanged)
|
0x1E 0x1F |
Explosion |
Current |
(unchanged)
|
0x1F 0x20 |
Unload Chunk |
Current |
(unchanged)
|
0x20 0x21 |
Game Event |
Current |
(unchanged)
|
0x21 0x22 |
Open Horse Screen |
Current |
(unchanged)
|
0x22 0x23 |
Hurt Animation |
Current |
(unchanged)
|
0x23 0x24 |
Initialize World Border |
Current |
(unchanged)
|
0x24 0x25 |
Clientbound Keep Alive (play) |
Current |
(unchanged)
|
0x25 0x26 |
Chunk Data and Update Light |
Current |
(unchanged)
|
0x26 0x27 |
World Event |
Current |
(unchanged)
|
0x27 0x28 |
Particle |
Current |
(unchanged)
|
0x28 0x29 |
Update Light |
Current |
(unchanged)
|
0x29 0x2A |
Login (play) |
Current |
(unchanged)
|
0x2A 0x2B |
Map Data |
Current |
(unchanged)
|
0x2B 0x2C |
Merchant Offers |
Current |
(unchanged)
|
0x2C 0x2D |
Update Entity Position |
Current |
(unchanged)
|
0x2D 0x2E |
Update Entity Position and Rotation |
Current |
(unchanged)
|
0x2E 0x2F |
Update Entity Rotation |
Current |
(unchanged)
|
0x2F 0x30 |
Move Vehicle |
Current |
(unchanged)
|
0x30 0x31 |
Open Book |
Current |
(unchanged)
|
0x31 0x32 |
Open Screen |
Current |
(unchanged)
|
0x32 0x33 |
Open Sign Editor |
Current |
(unchanged)
|
0x33 0x34 |
Ping (play) |
Current |
(unchanged)
|
0x34 0x35 |
Ping Response (play) |
Current |
(unchanged)
|
0x35 0x36 |
Place Ghost Recipe |
Current |
(unchanged)
|
0x36 0x37 |
Player Abilities |
Current |
(unchanged)
|
0x37 0x38 |
Player Chat Message |
Current |
(unchanged)
|
0x38 0x39 |
End Combat |
Current |
(unchanged)
|
0x39 0x3A |
Enter Combat |
Current |
(unchanged)
|
0x3A 0x3B |
Combat Death |
Current |
(unchanged)
|
0x3B 0x3C |
Player Info Remove |
Current |
(unchanged)
|
0x3C 0x3D |
Player Info Update |
Current |
(unchanged)
|
0x3D 0x3E |
Look At |
Current |
(unchanged)
|
0x3E 0x3F |
Synchronize Player Position |
Current |
(unchanged)
|
0x3F 0x40 |
Update Recipe Book |
Current |
(unchanged)
|
0x40 0x41 |
Remove Entities |
Current |
(unchanged)
|
0x41 0x42 |
Remove Entity Effect |
Current |
(unchanged)
|
0x42 0x43 |
Reset Score |
Current |
(unchanged)
|
0x43 0x44 |
Remove Resource Pack (play) |
Current |
(unchanged)
|
0x44 0x45 |
Add Resource Pack (play) |
Current |
(unchanged)
|
0x45 0x46 |
Respawn |
Current |
(unchanged)
|
0x46 0x47 |
Set Head Rotation |
Current |
(unchanged)
|
0x47 0x48 |
Update Section Blocks |
Current |
(unchanged)
|
0x48 0x49 |
Select Advancements Tab |
Current |
(unchanged)
|
0x49 0x4A |
Server Data |
Current |
(unchanged)
|
0x4A 0x4B |
Set Action Bar Text |
Current |
(unchanged)
|
0x4B 0x4C |
Set Border Center |
Current |
(unchanged)
|
0x4C 0x4D |
Set Border Lerp Size |
Current |
(unchanged)
|
0x4D 0x4E |
Set Border Size |
Current |
(unchanged)
|
0x4E 0x4F |
Set Border Warning Delay |
Current |
(unchanged)
|
0x4F 0x50 |
Set Border Warning Distance |
Current |
(unchanged)
|
0x50 0x51 |
Set Camera |
Current |
(unchanged)
|
0x51 0x52 |
Set Held Item |
Current |
(unchanged)
|
0x52 0x53 |
Set Center Chunk |
Current |
(unchanged)
|
0x53 0x54 |
Set Render Distance |
Current |
(unchanged)
|
0x54 0x55 |
Set Default Spawn Position |
Current |
(unchanged)
|
0x55 0x56 |
Display Objective |
Current |
(unchanged)
|
0x56 0x57 |
Set Entity Metadata |
Current |
(unchanged)
|
0x57 0x58 |
Link Entities |
Current |
(unchanged)
|
0x58 0x59 |
Set Entity Velocity |
Current |
(unchanged)
|
0x59 0x5A |
Set Equipment |
Current |
(unchanged)
|
0x5A 0x5B |
Set Experience |
Current |
(unchanged)
|
0x5B 0x5C |
Set Health |
Current |
(unchanged)
|
0x5C 0x5D |
Update Objectives |
Current |
(unchanged)
|
0x5D 0x5E |
Set Passengers |
Current |
(unchanged)
|
0x5E 0x5F |
Update Teams |
Current |
(unchanged)
|
0x5F 0x60 |
Update Score |
Current |
(unchanged)
|
0x60 0x61 |
Set Simulation Distance |
Current |
(unchanged)
|
0x61 0x62 |
Set Subtitle Text |
Current |
(unchanged)
|
0x62 0x63 |
Update Time |
Current |
(unchanged)
|
0x63 0x64 |
Set Title Text |
Current |
(unchanged)
|
0x64 0x65 |
Set Title Animation Times |
Current |
(unchanged)
|
0x65 0x66 |
Entity Sound Effect |
Current |
(unchanged)
|
0x66 0x67 |
Sound Effect |
Current |
(unchanged)
|
0x67 0x68 |
Start Configuration |
Current |
(unchanged)
|
0x68 0x69 |
Stop Sound |
Current |
(unchanged)
|
| 0x6A |
Store Cookie (Play) |
|
Pre
|
0x69 0x6B |
System Chat Message |
Current |
(unchanged)
|
0x6A 0x6C |
Set Tab List Header And Footer |
Current |
(unchanged)
|
0x6B 0x6D |
Tag Query Response |
Current |
(unchanged)
|
0x6C 0x6E |
Pickup Item |
Current |
(unchanged)
|
0x6D 0x6F |
Teleport Entity |
Current |
(unchanged)
|
0x6E 0x70 |
Set Ticking State |
Current |
(unchanged)
|
0x6F 0x71 |
Step Tick |
Current |
(unchanged)
|
| 0x72 |
Transfer (Play) |
|
Pre
|
0x70 0x73 |
Update Advancements |
Current |
(unchanged)
|
0x71 0x74 |
Update Attributes |
Current |
Pre
|
0x72 0x75 |
Entity Effect |
Current |
Pre
|
0x73 0x76 |
Update Recipes |
Current |
(unchanged)
|
0x74 0x77 |
Update Tags (play) |
Current |
(unchanged)
|
| Play serverbound
|
| 0x10 |
Cookie Response (play) |
|
Pre
|
0x10 0x11 |
Serverbound Plugin Message (play) |
Current |
(unchanged)
|
0x11 0x12 |
Edit Book |
Current |
(unchanged)
|
0x12 0x13 |
Query Entity Tag |
Current |
(unchanged)
|
0x13 0x14 |
Interact |
Current |
(unchanged)
|
0x14 0x15 |
Jigsaw Generate |
Current |
(unchanged)
|
0x15 0x16 |
Serverbound Keep Alive (play) |
Current |
(unchanged)
|
0x16 0x17 |
Lock Difficulty |
Current |
(unchanged)
|
0x17 0x18 |
Set Player Position |
Current |
(unchanged)
|
0x18 0x19 |
Set Player Position and Rotation |
Current |
(unchanged)
|
0x19 0x1A |
Set Player Rotation |
Current |
(unchanged)
|
0x1A 0x1B |
Set Player On Ground |
Current |
(unchanged)
|
0x1B 0x1C |
Move Vehicle |
Current |
(unchanged)
|
0x1C 0x1D |
Paddle Boat |
Current |
(unchanged)
|
0x1D 0x1E |
Pick Item |
Current |
(unchanged)
|
0x1E 0x1F |
Ping Request (play) |
Current |
(unchanged)
|
0x1F 0x20 |
Place Recipe |
Current |
(unchanged)
|
0x20 0x21 |
Player Abilities |
Current |
(unchanged)
|
0x21 0x22 |
Player Action |
Current |
(unchanged)
|
0x22 0x23 |
Player Command |
Current |
(unchanged)
|
0x23 0x24 |
Player Input |
Current |
(unchanged)
|
0x24 0x25 |
Pong (play) |
Current |
(unchanged)
|
0x25 0x26 |
Change Recipe Book Settings |
Current |
(unchanged)
|
0x26 0x27 |
Set Seen Recipe |
Current |
(unchanged)
|
0x27 0x28 |
Rename Item |
Current |
(unchanged)
|
0x28 0x29 |
Resource Pack Response (play) |
Current |
(unchanged)
|
0x29 0x2A |
Seen Advancements |
Current |
(unchanged)
|
0x2A 0x2B |
Select Trade |
Current |
(unchanged)
|
0x2B 0x2C |
Set Beacon Effect |
Current |
(unchanged)
|
0x2C 0x2D |
Set Held Item |
Current |
(unchanged)
|
0x2D 0x2E |
Program Command Block |
Current |
(unchanged)
|
0x2E 0x2F |
Program Command Block Minecart |
Current |
(unchanged)
|
0x2F 0x30 |
Set Creative Mode Slot |
Current |
(unchanged)
|
0x30 0x31 |
Program Jigsaw Block |
Current |
(unchanged)
|
0x31 0x32 |
Program Structure Block |
Current |
(unchanged)
|
0x32 0x33 |
Update Sign |
Current |
(unchanged)
|
0x33 0x34 |
Swing Arm |
Current |
(unchanged)
|
0x34 0x35 |
Teleport To Entity |
Current |
(unchanged)
|
0x35 0x36 |
Use Item On |
Current |
(unchanged)
|
0x36 0x37 |
Use Item |
Current |
(unchanged)
|
New/modified data types
No changes so far.
Entity Metadata
| Type (VarInt Enum)
|
Value (Varies)
|
Notes
|
| 0
|
Byte
|
|
| 1
|
VarInt
|
|
| 2
|
VarLong
|
|
| 3
|
Float
|
|
| 4
|
String
|
|
| 5
|
Chat
|
|
| 6
|
OptChat (Boolean + Chat)
|
Chat is present if the Boolean is set to true
|
| 7
|
Slot
|
|
| 8
|
Boolean
|
|
| 9
|
Rotation
|
3 Floats: rotation on x, rotation on y, rotation on z
|
| 10
|
Position
|
|
| 11
|
OptPosition (Boolean + Position)
|
Position is present if the Boolean is set to true
|
| 12
|
Direction (VarInt)
|
(Down = 0, Up = 1, North = 2, South = 3, West = 4, East = 5)
|
| 13
|
OptUUID (Boolean + UUID)
|
UUID is present if the Boolean is set to true
|
| 14
|
BlockID (VarInt)
|
| 15
|
OptBlockID (VarInt)
|
0 for absent (implies air); otherwise, a block state ID as per the block state registry
|
| 16
|
NBT
|
|
| 17
|
Particle
|
|
| 18
|
Villager Data
|
3 VarInts: villager type, villager profession, level
|
| 19
|
OptVarInt
|
0 for absent; 1 + actual value otherwise. Used for entity IDs.
|
| 20
|
Pose
|
A VarInt enum: 0: STANDING, 1: FALL_FLYING, 2: SLEEPING, 3: SWIMMING, 4: SPIN_ATTACK, 5: SNEAKING, 6: LONG_JUMPING, 7: DYING, 8: CROAKING, 9: USING_TONGUE, 10: SITTING, 11: ROARING, 12: SNIFFING, 13: EMERGING, 14: DIGGING
|
| 21
|
Cat Variant
|
A VarInt that points towards the CAT_VARIANT registry.
|
| 22
|
Frog Variant
|
A VarInt that points towards the FROG_VARIANT registry.
|
| 23
|
OptGlobalPos (Boolean + GlobalPos)
|
GlobalPos consists of a dimension identifier and Position.
|
| 24
|
Painting Variant
|
A VarInt that points towards the PAINTING_VARIANT registry.
|
| 25
|
Sniffer State
|
A VarInt enum: IDLING = 0, FEELING_HAPPY = 1, SCENTING = 2, SNIFFING = 3, SEARCHING = 4, DIGGING = 5, RISING = 6
|
| 26
|
Armadillo State
|
A VarInt enum: IDLE = 0, ROLLING = 1, SCARED = 2
|
26 27
|
Vector3
|
3 Floats: x, y, z
|
27 28
|
Quaternion
|
4 Floats: x, y, z, w
|
Armadillo
Extends Animal.
| Index
|
Type
|
Meaning
|
Default
|
| 17
|
Armadillo State
|
Armadillo State
|
IDLE
|
Block Actions
No changes so far.
Inventories
No changes so far.
Plugin Channels
No changes so far.
Handshake
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 765 in Minecraft 1.20.4).
|
| Server Address
|
String (255)
|
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 simple redirect, e.g. if _minecraft._tcp.example.com points to mc.example.org, users connecting to example.com will provide 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, 3 for Transfer.
|
Status
Clientbound
No changes so far.
Serverbound
No changes so far.
Login
Clientbound
Cookie Request (login)
Requests a cookie that was previously stored.
| Packet ID
|
State
|
Bound To
|
Field Name
|
Field Type
|
Notes
|
| 0x05
|
Login
|
Client
|
Key
|
Identifier
|
The identifier of the cookie.
|
Serverbound
Cookie Response (login)
Response to a Cookie Request (login) from the server. The Notchian server only accepts responses of up to 5 kiB in size.
| Packet ID
|
State
|
Bound To
|
Field Name
|
Field Type
|
Notes
|
| 0x04
|
Login
|
Server
|
Key
|
Identifier
|
The identifier of the cookie.
|
| Has Payload
|
Boolean
|
The payload is only present if the cookie exists on the client.
|
| Payload
|
Optional ByteArray(5120)
|
The data of the cookie, if any.
|
Configuration
Clientbound
Cookie Request (configuration)
Requests a cookie that was previously stored.
| Packet ID
|
State
|
Bound To
|
Field Name
|
Field Type
|
Notes
|
| 0x00
|
Configuration
|
Client
|
Key
|
Identifier
|
The identifier of the cookie.
|
Store Cookie (configuration)
Stores some arbitrary data on the client, which persists between server transfers. The Notchian client only accepts cookies of up to 5 kiB in size.
| Packet ID
|
State
|
Bound To
|
Field Name
|
Field Type
|
Notes
|
| 0x09
|
Configuration
|
Client
|
Key
|
Identifier
|
The identifier of the cookie.
|
| Payload
|
ByteArray(5120)
|
The data of the cookie.
|
Transfer (configuration)
Notifies the client that it should transfer to the given server. Cookies previously stored are preserved between server transfers.
| Packet ID
|
State
|
Bound To
|
Field Name
|
Field Type
|
Notes
|
| 0x0A
|
Configuration
|
Client
|
Host
|
String
|
The hostname of IP of the server.
|
| Port
|
VarInt
|
The port of the server.
|
Serverbound
Cookie Response (configuration)
Response to a Cookie Request (configuration) from the server. The Notchian server only accepts responses of up to 5 kiB in size.
| Packet ID
|
State
|
Bound To
|
Field Name
|
Field Type
|
Notes
|
| 0x01
|
Configuration
|
Server
|
Key
|
Identifier
|
The identifier of the cookie.
|
| Has Payload
|
Boolean
|
The payload is only present if the cookie exists on the client.
|
| Payload
|
Optional ByteArray(5120)
|
The data of the cookie, if any.
|
Play
Clientbound
Cookie Request (play)
Requests a cookie that was previously stored.
| Packet ID
|
State
|
Bound To
|
Field Name
|
Field Type
|
Notes
|
| 0x16
|
Play
|
Client
|
Key
|
Identifier
|
The identifier of the cookie.
|
Store Cookie (play)
Stores some arbitrary data on the client, which persists between server transfers. The Notchian client only accepts cookies of up to 5 kiB in size.
| Packet ID
|
State
|
Bound To
|
Field Name
|
Field Type
|
Notes
|
| 0x6A
|
Play
|
Client
|
Key
|
Identifier
|
The identifier of the cookie.
|
| Payload
|
ByteArray(5120)
|
The data of the cookie.
|
Transfer (play)
Notifies the client that it should transfer to the given server. Cookies previously stored are preserved between server transfers.
| Packet ID
|
State
|
Bound To
|
Field Name
|
Field Type
|
Notes
|
| 0x72
|
Play
|
Client
|
Host
|
String
|
The hostname of IP of the server.
|
| Port
|
VarInt
|
The port of the server.
|
Update Attributes
Sets attributes on the given entity.
| Packet ID
|
State
|
Bound To
|
Field Name
|
Field Type
|
Notes
|
| 0x71
|
Play
|
Client
|
Entity ID
|
VarInt
|
|
| Number Of Properties
|
VarInt
|
Number of elements in the following array.
|
| Property
|
Key Id
|
Array
|
Identifier VarInt Enum
|
See below.
|
| Value
|
Double
|
See below.
|
| Number Of Modifiers
|
VarInt
|
Number of elements in the following array.
|
| Modifiers
|
Array of Modifier Data
|
See Attribute#Modifiers. Modifier Data defined below.
|
Known Key values (see also Attribute#Modifiers):
| Id
|
Key
|
Default
|
Min
|
Max
|
Label
|
| 0
|
generic.armor
|
0.0
|
0.0
|
30.0
|
Armor.
|
| 1
|
generic.armor_toughness
|
0.0
|
0.0
|
20.0
|
Armor Toughness.
|
| 2
|
generic.attack_damage
|
2.0
|
0.0
|
2048.0
|
Attack Damage.
|
| 3
|
generic.attack_knockback
|
0.0
|
0.0
|
5.0
|
Attack Knockback.
|
| 4
|
generic.attack_speed
|
4.0
|
0.0
|
1024.0
|
Attack Speed.
|
| 5
|
generic.block_interaction_range
|
4.5
|
0.0
|
64.0
|
Block Interaction Range.
|
| 6
|
generic.entity_interaction_range
|
3.0
|
0.0
|
64.0
|
Entity Interaction Range.
|
| 7
|
generic.flying_speed
|
0.4
|
0.0
|
1024.0
|
Flying Speed.
|
| 8
|
generic.follow_range
|
32.0
|
0.0
|
2048.0
|
Follow Range.
|
| 9
|
horse.jump_strength
|
0.7
|
0.0
|
2.0
|
Jump Strength.
|
| 10
|
generic.knockback_resistance
|
0.0
|
0.0
|
1.0
|
Knockback Resistance.
|
| 11
|
generic.luck
|
0.0
|
-1024.0
|
1024.0
|
Luck.
|
| 12
|
generic.max_absorption
|
0.0
|
0.0
|
2048.0
|
Max Absorption.
|
| 13
|
generic.max_health
|
20.0
|
1.0
|
1024.0
|
Max Health.
|
| 14
|
generic.movement_speed
|
0.7
|
0.0
|
1024.0
|
Movement Speed.
|
| 15
|
generic.scale
|
1.0
|
0.0625
|
16.0
|
Scale.
|
| 16
|
zombie.spawn_reinforcements
|
0.0
|
0.0
|
1.0
|
Spawn Reinforcements Chance.
|
| 17
|
generic.step_height
|
0.6
|
0.0
|
10.0
|
Step Height.
|
Modifier Data structure:
| Field Name
|
Field Type
|
Notes
|
| UUID
|
UUID
|
|
| Amount
|
Double
|
May be positive or negative.
|
| Operation
|
Byte
|
See below.
|
The operation controls how the base value of the modifier is changed.
- 0: Add/subtract amount
- 1: Add/subtract amount percent of the current value
- 2: Multiply by amount percent
All of the 0's are applied first, and then the 1's, and then the 2's.
Entity Effect
| Packet ID
|
State
|
Bound To
|
Field Name
|
Field Type
|
Notes
|
| 0x72
|
Play
|
Client
|
Entity ID
|
VarInt
|
|
| Effect ID
|
VarInt
|
See this table.
|
| Amplifier
|
Byte
|
Notchian client displays effect level as Amplifier + 1.
|
| Duration
|
VarInt
|
Duration in ticks. (-1 for infinite)
|
| Flags
|
Byte
|
Bit field, see below.
|
| Has Factor Data
|
Boolean
|
Used in DARKNESS effect
|
| Factor Codec
|
NBT Tag
|
See below
|
 |
The following information needs to be added to this page:
|
| What exact effect does the blend bit flag have on the client? What happens if it is used on effects besides DARKNESS?
|
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 "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.
- 0x08: Blend - should the effect's hard-coded blending be applied? Currently only used in the DARKNESS effect to apply extra void fog and adjust the gamma value for lighting.
Factor Data
| Name
|
Type
|
Notes
|
| padding_duration
|
TAG_INT
|
|
| factor_start
|
TAG_FLOAT
|
|
| 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
Cookie Response (play)
Response to a Cookie Request (play) from the server. The Notchian server only accepts responses of up to 5 kiB in size.
| Packet ID
|
State
|
Bound To
|
Field Name
|
Field Type
|
Notes
|
| 0x6A
|
Play
|
Server
|
Key
|
Identifier
|
The identifier of the cookie.
|
| Has Payload
|
Boolean
|
The payload is only present if the cookie exists on the client.
|
| Payload
|
Optional ByteArray(5120)
|
The data of the cookie, if any.
|
