UpdateTransformMessage

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Server Packet - UpdateTransformMessage (1B24F808)

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Struct


SHORT Operand_Count
INT Opcode
LONG ObjectID
SHORT PositionX
SHORT PositionY
SHORT PositionZ
INT UpdateCounter
BYTE Posture
BYTE Direction

Variable Descriptions


Opperand_Count = 8

Opcode = 1B24F808


  • ObjectID:
ObjectID that you are listing attributes for.
  • Position X / Y / Z:
New Position of Object. The value is transformed the following way.
n = X / 4;
if n > 8192 n = n - 16384; 
effective map range is -8192..8192

to convert the a float to position
n = uint16(x * 4.0f + 0.5f);
  • UpdateCounter:
Number of movement updates the object has done.
Used to distinguish new updates from potential repeats.
Incremented by 1 each packet.
  • Posture:

The byte before direction corresponds to:

Name ID
Invalid -1
Standing 0
Sneaking 1
Walking 2
Running 3
Kneeling 4
CrouchSneaking 5
CrouchWalking 6
Prone 7
Crawling 8
ClimbingStationary 9
Climbing 10
Hovering 11
Flying 12
LyingDown 13
Sitting 14
SkillAnimating 15
DrivingVehicle 16
RidingCreature 17
KnockedDown 18
Incapacitated 19
Dead 20
Blocking 21

Haven't seen it out side the range of 0..5 yet

  • Direction:
This is the direction for the object to face after moving.
It is calculated by (Angle / 0.0625) where angle is in radians.
    • Additional Notes:
This packet needs to be sent frequently to prevent start/stop in a movement stream.
Also, shorter distances at slower frequency will create slower speed.

:OLD--DATA--Found this to be the posture byte

This byte seems to be related to the 2 variances of ObjController Transform Packets
used (23 vs 21). See them for further detail. The 23 seems to be sent
in a Data channel signifying it being important. This byte is related to a
count of 21's the occur between a group of 23. The 23 is assumed to be start/end
of a chain of movement while the 21 is an update.

-

Tags


S→C This packet originates on the server.

100% This packet has been completely reversed.


Sample Packet

08 00 // op count
08 F8 24 1B // UpdateTransformMessage
EB 4F 90 19 17 00 00 00 // object ID
AD CF // x
7C 00 // y
CB 2B // z
03 03 00 00 // counter
00 // posture
2F // direction