The SKEL format is used to store animation skeletons in Tropical Freeze.
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To do:
This format is near identical to DKCR's CINF format, so the article should be renamed + DKCR differences should be noted
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This file format needs a lot of research
Structure is known, but most data is unknown.
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Format
| Type
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Count
|
Name
|
Notes
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| Form Descriptor
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1
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SKEL Form Descriptor
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Data type is SKEL
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| u16
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1
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Magic
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Always 0x9E22
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| u16
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1
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Version
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Always 0x13
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| Joint Name Array
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1
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Joint Name Array
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Array containing the name of every joint in the skeleton.
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| u16
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1
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Unknown Count A
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Matches the joint name count
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| u16
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1
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Unknown Count B
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Matches the Skel Map size
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| u16
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1
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Unknown Count C
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| u16
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1
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Unknown Count D
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| u16
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1
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Unknown Count E
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| bool
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1
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Has Skeleton Map?
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If false, the Skeleton Map is not present.
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| Skeleton Map
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1
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Skeleton Map
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Only present if Has Skeleton Map? is true.
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| bool
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1
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Has Animation Attribute Data?
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If false, the Animation Attribute Data is not present.
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| Animation Attribute Data
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1
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Animation Attribute Data
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Only present if Has Animation Attribute Data? is true.
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| u8
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Unknown Count B
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Unknown
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| u8
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Unknown Count C
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Unknown
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| u8
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Unknown Count A
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Unknown
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| u8
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Unknown Count E
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Unknown
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| u32
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Unknown Count D
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Unknown
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| Coords
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Unknown Count B
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Unknown
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Coordinates array (likely initial bone transforms)
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| Skeleton Joint Set
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Unknown Count D
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Skeleton Joint Set
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| Skeleton Set Fragment Data
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1
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Skeleton Set Fragment Data
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Joint Name Array
| Type
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Count
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Name
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Notes
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| u32
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1
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Unknown
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If non-zero, no names are present.
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| u32
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1
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Joint Name Count
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Count of joint names in the array.
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| Joint Name
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Joint Name Count
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Joint Name Array
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Array of joint names.
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| u32
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1
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Unknown
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Joint Name
| Type
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Count
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Name
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Notes
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| u32
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1
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Name Size
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| char
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Name Size
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Name
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Zero-terminated
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Skeleton Map
| Type
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Count
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Name
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Notes
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| u16
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1
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Unknown Count A
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| u8
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1
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Unknown Count B
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| u8
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1
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Unknown Count C
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| u8
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Unknown Count A
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Unknown
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| u16
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Unknown Count A × 2
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Unknown
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| u32
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Unknown Count B
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Unknown
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| u16
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Unknown Count C
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Unknown
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| u32
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1
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Unknown
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Animation Attribute Data
| Type
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Count
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Name
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Notes
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| bool
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1
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Has Visibility Group Name Array?
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Indicates whether the Visibility Group Name Array is present.
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| Joint Name Array
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1
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Visibility Group Name Array
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Only present if Has Visibility Group Name Array? is true.
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| bool
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1
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Has Animation Attribute Info Data?
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Indicates whether the Animation Attribute Info Data is present.
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| Animation Attribute Info Data
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1
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Animation Attribute Info Data
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Only present if Has Animation Attribute Info Data? is true.
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Animation Attribute Info Data
| Type
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Count
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Name
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Notes
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| Joint Name Array
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1
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Unknown Name Array
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| u32
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1
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Animation Attribute Info Count
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Count of Animation Attribute Info elements in the next array.
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| Animation Attribute Info
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Animation Attribute Info Count
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Animation Attribute Info Array
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Animation Attribute Info
| Offset
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Type
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Count
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Name
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Notes
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| 0x0
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u32
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1
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Unknown
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Must be 1, otherwise the following floats aren't present
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| 0x4
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float
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1
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Unknown
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| 0x8
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float
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1
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Unknown
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| 0xC
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End of Animation Attribute Info
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Coords
| Offset
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Type
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Count
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Name
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Notes
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| 0x00
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Quaternion
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1
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Unknown
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Likely bone orientation
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| 0x10
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Vector3f
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1
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Unknown
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Likely bone scale (it's usually 1,1,1)
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| 0x1C
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Vector3f
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1
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Unknown
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Likely bone position
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| 0x28
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End of Coords
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Skeleton Joint Set
| Type
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Count
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Name
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Notes
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| u32
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1
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Unknown
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| u32
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1
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Unknown Count
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| u32
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8
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Unknown
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| u8
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Unknown Count
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Unknown
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Skeleton Set Fragment Data
| Type
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Count
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Name
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Notes
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| u32
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1
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Unknown Count
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| u8
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Unknown Count B
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Unknown
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This uses the count value from the base skeleton data
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| Unknown Struct
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Unknown Count
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Unknown
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Unknown Struct
| Offset
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Type
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Count
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Name
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Notes
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| 0x00
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u32
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1
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Unknown
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| 0x04
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u32
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8
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Unknown
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| 0x24
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End of Unknown Struct
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