Pre-release protocol
Revision as of 09:49, 6 January 2012 by Barneygale (talk | contribs)
This page documents the changes from the last stable Minecraft release (currently 1.0.1) to the current pre-release (currently 12w01a)
Contents
New packets
Unknown (0xFA)
| Packet ID | Field Name | Field Type | Example | Notes |
|---|---|---|---|---|
| 0xFA | Unknown | string | ||
| Length of array | short | Length of the following array | ||
| Array | byte[] | |||
| Total Size: | 5 bytes + string + array | |||
Changed packets
Login Request (0x01)
New string field added: level generator
Client to Server
| Packet ID | Field Name | Field Type | Example | Notes |
|---|---|---|---|---|
| 0x01 | Protocol Version | int | 20
|
1.0.0's protocol version is 22
|
| Username | string | TkTech
|
The name of the user attempting to login, max length of 16 | |
| Not used | long | 0
|
||
| Not used | string | |||
| Not used | int | 0
|
||
| Not used | byte | 0
|
||
| Not used | byte | 0
|
||
| Not used | unsigned byte | 0
|
||
| Not used | unsigned byte | 0
|
||
| Total Size: | 25 bytes + length of strings | |||
Server to Client
| 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 | unsigned byte | 128
|
Defaults to 128
| |
| Max players | unsigned byte | 8
|
Used by the client to draw the player list | |
| Total Size: | 25 bytes + length of strings | |||
Respawn (0x09)
New string field added
| Packet ID | Field Name | Field Type | Example | Notes |
|---|---|---|---|---|
| 0x09 | Dimension | byte | 1
|
-1: The Nether, 0: The Overworld, 1: The End
|
| Difficulty | byte | 1
|
0 thru 3 for Peaceful, Easy, Normal, Hard. 1 is always sent c->s
| |
| Creative mode | byte | 1
|
0 for survival, 1 for creative.
| |
| World height | short | 128
|
Defaults to 128
| |
| Map Seed | long | -3815848935435401459
| ||
| Level Type | string | DEFAULT | ||
| Total Size: | 16 bytes + length of string | |||
Other changes
None currently.
Protocol History
2012-01-05
- 12w01a
- Protocol version is now 23
2011-12-15
- 11w50a
2011-12-08
- 11w49a
2011-12-01
- 11w48a
2011-11-24
- 11w47a
