CLSN (File Format)

The CLSN format in Donkey Kong Country: Tropical Freeze is for static collision, usually used by world geometry.

This file format is almost completely documented Collision materials need experimentation to verify structure + figure out what the different flags do

Format

Type	Count	Name	Description
Form Descriptor	1	Collision Form Descriptor	Data type is CLSN
Chunk Descriptor	1	Vertices Chunk Descriptor	Data type is VERT
u32	1	Vertex Count
vector3	Vertex Count	Vertex Data
Chunk Descriptor	1	Collision Materials Chunk Descriptor	Data type is MTRL
u32	1	Collision Material Count
Collision Material	Collision Material Count	Collision Materials	Collision materials define collision properties.
Chunk Descriptor	1	Triangles Chunk Descriptor	Data type is TRIS
u32	1	Triangle Count
Collision Triangle	Triangle Count	Triangles Array
End of file

Collision Material

Type	Count	Name	Description
u32	1	Unknown
u32	1	Unknown
u32	1	Unknown
u32	1	Unknown
u32	1	Unknown
End of collision material

Collision Triangle

Type	Count	Name	Description
u32	3	Vertex Indices
u16	1	Collision Material Index
u16	1	Unknown	This is probably just padding.
End of triangle