Almost all files in FF9 has structure, which starts from 2 bytes DB (hex numbers). This record points, that after we’ll have pointer list, which points to different data sections in the file (data can be sounds, TIMs, models, etc).
DB Structure:
| Data | Size |
|---|---|
| “DB” | 1 byte |
| Pointers count | 1 byte |
| 00 00 | 2 bytes |
| Pointer1, Pointer2,… | 4 bytes * Pointers count |
Pointer is a number, which represent how many bytes from current position there is target data. Current position in this case is first byte of this pointer.
Pointer structure:
| Data | Size |
|---|---|
| Pointer | 3 bytes |
| Data Type | 1 byte |
Data, where points this pointer begins with 2 bytes, first byte indicates, what data type we have, and second is count of objects of selected type.
Data Data structure:
| 1 byte | Data type |
| 1 byte | Number of object`s in this scope |
| 2 bytes | 00 00 (for 4 bytes align) |
Objects identifiers
After this goes object identifiers for selecting in scripts.
One identifier are 2 bytes, and size of all identifiers must be aligned to 4 bytes (by add 0000 identifier).
Identifiers count = Number of object`s in Data Structure.
Pointers to objects
Count of pointers = Number of object`s in Data Structure.
Size of all pointers are 4 bytes.
Pointers are from current position (offset of current pointer + pointer value)
End`s pointer for objects
After Pointers to objects goes 4 bytes.
It`s pointer from first pointer offset to end of last object (offset of first pointer + end`s pointer)