Ski Files

This information is taken from resources for Perfect World. While Perfect World and other Angelica engine games are very similar there may be some differences. This information needs to be confirmed for Ether Saga.
General File Structure
Offset
Name
Data Size
Typ. Values
Meaning
Comments
0x0000
moxbiksa[8]
CHAR
"MOXBIKSA"
file type identifier
Ski BMOX
0x0008
ski_type
DWORD
8 or 9
Type 9 has bone names listed, type 8 doesn't
0x000C
mesh_count[4]
DWORD
1,0,0,0 or 2,0,0,0
number of meshes
Defines a 
vertex_type as well. (index to mesh_count[]); so 
vertex_type goes (0,1,?,?)
0x001C
tex_count
DWORD
1 or 2
number of textures
0x0020
mat_count
DWORD
1 or 2
number of materials
0x0024
num_bips
DWORD
4 or more
number of “bones”
if ski_type=8, always no bips (but num_bips=4)
0x0028
(unknown_2)
DWORD
0
only value 0 spotted currently
0x002C
(type_mask)
DWORD
41 or 43 or ...
num.Bones in *.bon
Seems to identify the type of Avatar; Human_Female=41, Demon_Female = 43, Human_Male = 35, ...
0x0030
zero_60
DWORD
0,0,0,...
just 15 zero DWORDs (or 60 zero BYTEs)
IF ski_type == 9:	{{{				
	Bone Names				
0x006C	Repeat [num_bips]:	{{{			
	bone_len	DWORD	e.g. 12	string len (bone name)	
	bone_name[len]	CHAR	“Bip01 L Foot”	the bone name string	no trailing /0
	}}}	}}}			
					
	Textures				
0x006C + (bones)	Repeat [tex_count]:	{{{			
	tex_len	DWORD	e.g. 16		number of bytes, not chinese letters
	tex_name[len]	CHAR	"中式婚礼女鞋.dds”	Texture file name	(maybe unicode)
		}}}			
	Materials				
	Repeat [mat_count]:	{{{			
	MatHeader	String-z	“MATERIAL: “/0	Header for Mat.Block	10 bytes + trail-/0
	mat_values[16]	FLOAT	1, 1, 1, 1, 1, 1, 1, 1,	(unknown)	could be a matrix ...
			0, 0, 0, 1, 0, 0, 0, 1	(unknown)	... or other float parameters
	scale_param	FLOAT	9.999 or 19,999 or 10.0	a scaling factor?	(a “0” was spotted too)
	is_clothing	BYTE	0x00 or 0x01	if fashion or not?	could be boolean
		}}}			
	Meshes				
	Repeat [mesh_count]:	<<<			
	obj_len	DWORD	e.g. 8	string len (mesh_obj)	
	mesh_obj[len]	CHAR	"萤火虫_0”	name of the model	no trailing /0
	tex_index	LONG_32	0 or 1 or ...?	index to texture	none if -1
	mat_index	LONG_32	0	index to materials	
IF vertex_type == 1:	{{{				vertex_type: (see “mesh_count[]” above)
	extra_data[4]	BYTE		(unknown)	
	}}}				
	vertex_count	DWORD	1235	number of vertices	
	faceverts_count	DWORD	6084	number of faceverts	faceverts_count = 3*face_count, because always triangles
					
	Vertices				
	Repeat [vertex_count]:	{{{			
	vertex_position[3]	FLOAT	(0.05, 1.0, -0.234)	vertex coordinate	-X, -Z, Y
IF vertex_type == 0:	{{{				
	vertex_weight[3]	FLOAT	(0.7, 0.3, 0.0)	bone influence ?	seem 2nd value is always between 1st and 3rd
	bone_index[4]	BYTE	(3, 12, 0, 27)	list of 4 “bones”	the order must be kept; don't sort!
	}}}				
	vertex_normal[3]	FLOAT		vertex normal vector	
	vertex_UV_coord[2]	FLOAT		u/v-coordinate of vertex	U, 1-V
		}}}			
	Faces				
	Repeat [face_count]:	{{{			face_count = faceverts_count / 3
	vertex_index[3]	USHORT_16	(123, 122, 144)	3 indices to vertices	
		}}}			
	(End Meshes)	>>>			
					
	[EOF]