BMG files are the jnlib file format for storing text strings. The BMG file header is as follows:
| Offset | Type | Meaning |
|---|---|---|
| 0x00 | u32 | File signature. "MESG" for BMG files. |
| 0x04 | u32 | File type. "bmg1" for BMG files. |
| 0x08 | u32 | File size |
| 0x0C | u32 | Number of data blocks. |
| 0x10 | u8 | Character set. Can be narrow character (1), wide character (2), Shift-JIS (3), or UTF-8 (4). |
| 0x11 | u8[0xF] | Unused? |
The BMG file is composed of multiple data blocks. These are INF1, MID1, DAT1, STR1, FLW1, and FLI1. The data blocks have a common header structure:
| Offset | Type | Meaning |
|---|---|---|
| 0x00 | char[4] | Tag |
| 0x04 | u32 | Block size, including this header. |
INF1 Block#
The INF1 (info) block stores basic info about the BMG file. It takes the following structure:
| Offset | Type | Meaning |
|---|---|---|
| 0x00 | u16 | Number of entries |
| 0x02 | u16 | Size of entry (always 4?) |
| 0x04 | u16 | Group ID |
| 0x06 | u8 | Color ID |
| 0x07 | u8 | |
| 0x08 | u32[...] | Offsets to strings. This is a list of offsets into the DAT1 block. |
MID1 Block#
DAT1 Block#
The DAT1 block stores message data. This block is an unstructured string pool referenced by the offset array in the INF1 block.
STR1 Block#
FLW1 Block#
FLI1 Block#
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This page (revision-1) was last changed on 01-May-2024 22:17 by Garhoogin
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