140 lines
4.0 KiB
Markdown
140 lines
4.0 KiB
Markdown
# Chunked Formats
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# General Block format
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```cpp
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struct Block {
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unsigned char block_id[4],
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uint32_t size,
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unsigned char data[size],
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}
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template<typename T>
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struct Block {
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unsigned char block_id[4],
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uint32_t size,
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T data,
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}
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```
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# Block IDs
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File ID | Chunk IDs
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------- | ------------------------------------------------------------------------------
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AMC | AMC, CMSH, QUAD
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CM3 | ANI, CM3, EVA, NAE, NAM, SCN
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DUM | DUM, INI
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EMI | EMI, LFVF, MAP, MAT, TRI
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SM3 | ANI, CAM, INI, LFVF, LUZ, MAP, MAT, MD3D, NAE, NAM, PORT, SCN, SM3, SPR3, SUEL
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Read types:
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- `i`: 4-byte unsigned integer
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- `s`: 4-byte signed integer
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- `p`: length prefixed string
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- `f`: 4-byte float
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- `3f`: array of 3 4-byte floats
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- `3i`: array of 3 4-byte unsigned integers
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Chunk ID | Description | Reads
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-------- | --------------------------- | ------------------------
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AMC | Collision Data |
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ANI | Animation data? |
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CAM | Camera info? |
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CMSH | Collision Mesh Data |
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DUM | Dummy (map object) data |
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INI | INI-Configuration data |
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LFVF | FVF Vertex Data |
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LUZ | Lighting information |
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MAP | UV Map? |
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MAT | Material information |
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NAE | Animation Data? |
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NAM | Animation Data? |
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PORT | Map portals? | i==1, i, i, 4, 4
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QUAD | Mesh data? |
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SCN | Scene data? |
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SUEL | Ground plane? | 0x18, 0xc, 4, 4, 4, 0x18
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TRI | Triangle strip definitions? |
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MD3D | 3D Model definition? |
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# Format of Specific chunks
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## INI
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Configuration Data
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```cpp
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struct INI {
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uint32_t num_sections;
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struct {
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uint32_t num_lines;
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struct {
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uint32_t num_chars;
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char line[num_chars]
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} lines[num_lines];
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} sections[num_sections];
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};
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```
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## LFVF
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DirectX Flexible Vertex Format Data
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```cpp
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struct Vertex { // fields according to flags
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float position[3]; // D3DFVF_XYZ | D3DFVF_XYZRHW | D3DFVF_XYZB*
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float rhw; // D3DFVF_XYZRHW
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float weights[3]; // D3DFVF_XYZB*
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float normal[3]; // D3DFVF_NORMAL
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float point_size; // D3DFVF_PSIZE
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uint32_t diffuse; // D3DFVF_DIFFUSE, RGBA
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uint32_t specular; //D3DFVF_SPECULAR, RGBA
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float tex_coords[D3DFVF_TEXTUREFORMAT][D3DFVF_TEX]; // D3DFVF_TEX* and D3DFVF_TEXTUREFORMAT*
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};
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struct LFVF {
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uint32_t unk;
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uint32_t num_entries;
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struct {
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uint32_t FVF; // FVF vertex data configuration
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uint32_t vert_size; //?,
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uint32_t num_verts;
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Vertex vertices[num_vers];
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} entry[num_entries];
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};
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```
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## DUM
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Map object data
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```cpp
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struct DUM {
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uint32_t unk_1;
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uint32_t num_dummies;
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uint32_t unk_2;
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struct {
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uint32_t name_length;
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char name[name_length];
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float position[3];
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float rotation[3];
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uint32_t has_ini;
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if (has_ini) {
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Block<INI> ini;
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};
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uint32_t unk_1; // has_next?
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} sections[num_sections];
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};
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```
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## MAP
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```cpp
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struct MAP {
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uint32_t version;
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uint32_t tex_name_len;
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char tex_name[tex_name_len];
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// TODO: rest
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}
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``` |