Difference between revisions of "Object Data"

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(Undo revision 7209 by Fenhl (talk) Undoing Fenhl's mistake, please check within IRC next time.)
(Undo revision 7214 by Javaprophet (talk) restoring formatting change that was reverted without explanation, temp reverting this to restore)
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== Object Data ==
 
== Object Data ==
  
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In the "Spawn Object/Vehicle" packet, additional metadata about the spawned entity may be provided.  The contents of this extra data depend on the type of object being spawned, but it is always an Integer.  No matter what, the server must send one integer to the client, although 0 is a valid value.  If a number greater than zero is provided (for all entities), the velocity portion of the Spawn Object packet is sent as well.
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In the "Spawn Object/Vehicle" packet, additional metadata about the spawned entity may be provided.  The length and contents of this extra data depend on the type of object being spawned.  No matter what, the server must send at least one integer to the client, although 0 is a valid value.  If a number other than zero is provided (for all entities), the following data is appended to the end of the object data (as of [[Protocol version numbers|15w31a, protocol 49]] this data is always required):
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{| class="wikitable"
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|- class="row0"
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! class="col0" | Field Name
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! class="col1" | Field Type
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! class="col2" | Example
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! class="col3" | Notes
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|- class="row2"
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| class="col0 centeralign" | Speed X
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| class="col1 centeralign" | Short
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| class="col2 centeralign" | <code>0</code>
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| class="col3" | The speed of the object, same units as [[Protocol#Entity Velocity|Entity Velocity]]
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|- class="row2"
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| class="col0 centeralign" | Speed Y
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| class="col1 centeralign" | Short
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| class="col2 centeralign" | <code>0</code>
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| class="col3" | The speed of the object, same units as [[Protocol#Entity Velocity|Entity Velocity]]
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|- class="row2"
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| class="col0 centeralign" | Speed Z
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| class="col1 centeralign" | Short
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| class="col2 centeralign" | <code>0</code>
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| class="col3" | The speed of the object, same units as [[Protocol#Entity Velocity|Entity Velocity]]
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|}
  
 
== Meaning of int field ==
 
== Meaning of int field ==

Revision as of 00:01, 11 January 2016

Object Data

In the "Spawn Object/Vehicle" packet, additional metadata about the spawned entity may be provided. The length and contents of this extra data depend on the type of object being spawned. No matter what, the server must send at least one integer to the client, although 0 is a valid value. If a number other than zero is provided (for all entities), the following data is appended to the end of the object data (as of 15w31a, protocol 49 this data is always required):

Field Name Field Type Example Notes
Speed X Short 0 The speed of the object, same units as Entity Velocity
Speed Y Short 0 The speed of the object, same units as Entity Velocity
Speed Z Short 0 The speed of the object, same units as Entity Velocity

Meaning of int field

Minecarts (id 10)

The int value itself specifies the minecart's functionality:

Value Minecart functionality
0 Empty (ride-able) minecart
1 Chest minecart
2 Furnace (powered) minecart
3 TNT minecart
4 Spawner minecart
5 Hopper minecart
6 Command Block minecart

Item Frame (id 71)

Field Name Field Type Example Notes
Orientation int 3 0-3: South, West, North, East

Falling Block (id 70)

Field Name Field Type Example Notes
Block Type int 12 BlockID | (Metadata << 0x10)

Splash Potions (id 73)

Field Name Field Type Example Notes
Entity ID int 64 Potion data value

For more information on potion data values, see [1].

Fishing Float (id 90)

Field Name Field Type Example Notes
Owner int The entity ID of the owner


Projectiles (Any projectile)

This includes ghast fireballs, arrows, and fishhooks (probably more).

Field Name Field Type Example Notes
Entity ID int 64 The entity ID of the thrower
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