This article documents the Data field in the Spawn Object packet. The field is of type Int, and the meaning of its contents depend on the type of object being spawned, as defined in the Type field of the same packet, and is documented below.
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
|
(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 Data values#Potions.
Fishing Float (id 90)
| Field name
|
Field type
|
Example
|
Notes
|
| Owner
|
Int
|
|
The entity ID of the owner
|
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
|
