MCH Field Character Models
Each MCH file contains a skinned-animated model representing a character on the field or world Maps. There appear to be multiple files of the same character representing differnt Level of Details.
They usually contain multiple TIM textures (standard PSX textures), mesh geometry, bones, skeleton heirarchy information and skinning information. The whereabouts of the Bone Animation data is currently unknown.
Accessing MCH Files
todo
MCH File Structure
Header
0x100 bytes [256 bytes]
DWORD: Offsets to multiple Texture-Data
Start: 0x00
Parse DWORDS until read value: 0xFFFFFFFF
DWORD: Offset to Model Data
Texture-Data
(for each Texture)
Standard [TIM] format textures
Model-Data
| Offset | Length | Description |
|---|---|---|
| 0x00 | 4 bytes | Number of Skeleton Bones |
| 0x04 | 4 bytes | Number of Vertices |
| 0x08 | 4 bytes | Number of texture animations |
| 0x0C | 4 bytes | Number of Faces |
| 0x10 | 4 bytes | Number of Unknown data |
| 0x14 | 4 bytes | Number of Skin objects |
| 0x18 | 4 bytes | Unknown |
| 0x1C | 2 bytes | Triangle count |
| 0x1E | 2 bytes | Quad count |
| 0x20 | 4 bytes | Offset of bones |
| 0x24 | 4 bytes | Offset of vertices |
| 0x28 | 4 bytes | Offset of texture animations |
| 0x2C | 4 bytes | Offset of faces |
| 0x30 | 4 bytes | Offset of unknown data |
| 0x34 | 4 bytes | Offset of skin objects |
| 0x38 | 4 bytes | Offset of animation data |
| 0x3C | 4 bytes | Unknown |
Skeleton Data: 0x40 bytes per bone, recurse through number of bones dictated in Header
(for each bone)
SHORT: parent bone (1-based)
SHORT: (unknown)
DWORD: (unknown)
SHORT: bone length
DWORD * 15: (unknown)
Vertex Data:
(for each vertex)
SHORT * 3: Vertex XYZ Position
SHORT: (unknown)
DWORD * 4: (unknown)
Texture-animations Data:
struct
{
byte unknown
byte total_textures?
byte unknown
byte uSize
byte vSize
byte replacement_section_count
UV_pair original_area_coords
byte unknown[2]
UV_pair replacement_coords[replacement_section_count]
};
struct face {
u32 opcode; 0x07060125 = triangle, 0907012d = Quad
BYTE unk[4];
SHORT unknown; //When bit 0x04 is set, sets semitransparency
BYTE unk[2];
u16 verticies[4]; //vertex id's
u16 verticies1[4]; //Edge data???
u32 Vertex_Colours[4];
TextureMap TextureData[4]; // TextureMap = u16 with the first byte = u and the second byte = v
u16 Padding;
u16 textureIndex;
u32 padding[2];
//64 bytes
};
Unknown Data, Seems to split up the skin-objects, triangles, and quads:
struct
{
uint16 start_skinobject_index
uint16 skinobject_count
byte unknown[12]
uint16 start_triangle_index
uint16 triangle_count
uint16 start_quad_index
uint16 quad_count
byte unknown2[8]
};
Skin-Object Data:
(for each skin-object)
SHORT: index of first vertex
SHORT: number of vertices
SHORT: Bone ID (1-based)
SHORT: (unknown)
todo: notes on skinning, animation data
MCH Model File List
todo