Revision as of 11:34, 15 February 2012
This page documents the changes from the last stable Minecraft release (currently 1.1) to the current pre-release
New packets
Entity Head Look (0x23)
Changes the direction an entity's head is facing.
| Packet ID
|
Field Name
|
Field Type
|
Example
|
Notes
|
| 0x23
|
Entity ID
|
int
|
|
|
| Head Yaw
|
byte
|
|
Head yaw in steps of 2π/256
|
| Total Size:
|
6 bytes
|
Update Tile Entity (0x84)
Essentially a block update on a tile entity.
| Packet ID
|
Field Name
|
Field Type
|
Example
|
Notes
|
| 0x84
|
X
|
int
|
|
|
| Y
|
short
|
|
|
| Z
|
int
|
|
|
| Action
|
byte
|
|
The type of update to perform
|
| Custom 1
|
int
|
|
Varies
|
| Custom 2
|
int
|
|
Varies
|
| Custom 3
|
int
|
|
Varies
|
| Total Size:
|
24 bytes
|
Actions
- 1: Set mob displayed inside a mob spawner. Custom 1 contains the mob type
Changed packets
World height was changed to an integer.
| Packet ID
|
Field Name
|
Field Type
|
Example
|
Notes
|
| 0x01
|
Entity ID
|
int
|
1298
|
The Players Entity ID
|
| Not used
|
string
|
(empty string)
|
Not used
|
| Map Seed
|
long
|
971768181197178410
|
The server's map seed. Must be sent in respawn packets by the client.
|
| Level Type
|
string
|
DEFAULT
|
DEFAULT or SUPERFLAT; level-type in server.properties
|
| Server mode
|
int
|
0
|
0 for survival, 1 for creative
|
| Dimension
|
byte
|
0
|
-1: The Nether, 0: The Overworld, 1: The End
|
| Difficulty
|
byte
|
1
|
0 thru 3 for Peaceful, Easy, Normal, Hard
|
| World height
|
integer
|
128
|
Defaults to 128
|
| Max players
|
unsigned byte
|
8
|
Used by the client to draw the player list
|
| Total Size:
|
28 bytes + length of strings
|
Client to Server
The hostname and port were added to this packet, most likely to allow virtual hosting .(sample implementation)
| Packet ID
|
Field Name
|
Field Type
|
Example
|
Notes
|
| 0x02
|
UsernameAndHost
|
string
|
TkTech;localhost:25565
|
The username of the player attempting to connect, and the host he is connecting to, seperated by a semicolon.
|
| Total Size:
|
3 bytes + length of strings
|
TODO: Figure out other packets
New byte field: head yaw
This needs confirmation!
| Packet ID
|
Field Name
|
Field Type
|
Example
|
Notes
|
| 0x18
|
EID
|
int
|
446
|
Entity ID
|
| Type
|
byte
|
91
|
The type of mob. See Entities#Mobs
|
| X
|
int
|
13366
|
The Absolute Integer X Position of the object
|
| Y
|
int
|
2176
|
The Absolute Integer Y Position of the object
|
| Z
|
int
|
1680
|
The Absolute Integer Z Position of the object
|
| Yaw
|
byte
|
-27
|
The yaw in steps of 2π/256
|
| Pitch
|
byte
|
0
|
The pitch in steps of 2π/256
|
| Head Yaw
|
byte
|
|
Head yaw in steps of 2π/256
|
| Metadata
|
Metadata
|
127
|
Varies by mob, see Entities
|
| Total Size:
|
21 bytes + Metadata (at least 1)
|
Other changes
Protocol version is now 27.
Protocol History
2012-02-15
- 12w07a
- Protocol version is now 27
- Updated packets: 0x01, 0x09, 0x33
2012-02-09
- 12w06a
- Protocol version is now 25
- New packet: 0x84
2012-01-26
- 12w04a
- Protocol version has not been changed
- Handshake Packet by client (0x02) now contains the server host and port
- Window Open Packet (0x64): WindowTitle is now longer than accepted by older clients. Contains a keyword such as "container.furnace"
2012-01-19
- 12w03a
- Protocol version is now 24
- New packet: 0x23
- MobSpawn: new field, 1 byte inserted before metadata.
