Difference between revisions of "Pre-release protocol"
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| class="col1 rightalign" colspan="4" | 3 bytes | | class="col1 rightalign" colspan="4" | 3 bytes | ||
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| + | '''This packet is now bidirectional.''' | ||
== Changed Data Types == | == Changed Data Types == | ||
Revision as of 20:19, 17 December 2012
This page documents the changes from the last stable Minecraft release (currently 1.4.5, protocol 49) to the current pre-release (or weekly release). Note that this page contains bleeding-edge information that may not be completely or correctly documented.
Contents
New Packets
-None-
Changed Packets
Held Item Change (0x10)
Two-Way
| Packet ID | Field Name | Field Type | Example | Notes |
| 0x10 | Slot ID | short | 1
|
The slot which the player has selected (0-8) |
| Total Size: | 3 bytes | |||
This packet is now bidirectional.
Changed Data Types
Spawn Object/Vehicle (0x17)
Server to Client
| Packet ID | Field Name | Field Type | Example | Notes |
| 0x17 | EID | int | 62
|
Entity ID of the Object |
| Type | byte | 11
|
The type of object (see Entities#Objects) | |
| X | int | 16080
|
The Absolute Integer X Position of the object | |
| Y | int | 2299
|
The Absolute Integer Y Position of the object | |
| Z | int | 592
|
The Absolute Integer Z Position of the object | |
| Yaw | byte | 592
|
The yaw in steps of 2p/256 | |
| Pitch | byte | 592
|
The pitch in steps of 2p/256 | |
| Object Data | Object Data | |||
| Total Size: | 22 or 28 bytes | |||
Map Chunk Bulk (0x38)
Server to Client
| Packet ID | Field Name | Field Type | Example | Notes |
| 0x38 | Chunk Count | short | The number of chunks in this packet | |
| Chunk data length | int | the size of the data field | ||
| Unknown use | boolean | Has only been observed as true when sniffing a vanilla connection. | ||
| Data | byte array | Compressed chunk data | ||
| meta information | chunk bulk meta information | Chunk count times the Meta information structure (See notes for details) | ||
| Total Size: | 7 + (Chunk data size) + 12 * (Chunk Count) bytes | |||
Removed Packets
0x15 "Spawn Dropped Item" has been removed, and its purpose is now handled by 0x17 "Spawn Object/Vehicle". The entity type ID is 0x02. You can set the item type by sending an 0x18 "Entity Metadata" packet with a slot at index 10. Vanilla packet dump
Protocol History
1.4.6 Pre-release
Protocol version is now 51. Spawn dropped item (0x15) removed, merged into spawn object (0x17). Map chunk bulk (0x38) adds a boolean field with unknown purpose.
12w49a
Protocol version is now 50. Packet 0x10 is sent both ways. Packet 0x17 has two new bytes, currently unknown.
