SKEL Chunk

A chunk which contains a bone hierarchy.

Chunk Header

Size (bytes)	Name	Expected Value	Type	Notes
4	Type	'DATA'	String (ascii)
4	ID	'SKEL'	String (ascii)
4	Version	'5'	UInt32
4	Size (bytes)	-	UInt32
4	Name Size	'1'	UInt32
-	Name	''	String (ascii)	Null Terminated ('\x00')

Layout

Data

Size (bytes)	Name	Expected Value	Type
4	Bone Count	-	Int32
-	Bones	-	List[Bone Data]

Bone Data

Represents a single bone in the hierarchy

Parent Index points to the parent bone in the Bones array. If Parent Index is -1, then the bone has no parent.

Position and Rotation are relative to the parent.

Layout

Size (bytes)	Name	Expected Value	Type
4	Name Size	-	Int32
-	Name	-	String (ascii)
4	Parent Index	-	Int32
12	Position	-	Float3
16	Rotation	-	Quaternion (x,y,z,w)

Used In

WHM-Chunky