NSA: Difference between revisions
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[[Category:Archives]] | [[Category:Archives]] | ||
[[Category:NScripter]] | |||
Used in the following games: | Used in the following games: | ||
* Monster Girl Quest | * Monster Girl Quest | ||
Revision as of 04:55, 2 August 2014
Used in the following games:
- Monster Girl Quest
- みずいろ
- 月姫
Structure
| Header | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | Content | Description | ||||||||||||
| 2Bytes | Number of files | |||||||||||||
| 4Bytes | Index Size | |||||||||||||
| Index | ||||||||||||||
| Size | Content | Description | ||||||||||||
| (Length)+1Byte | File name | Terminated with 0x00 | ||||||||||||
| 1Bytes | Compress Switch | 00=false 01=true | ||||||||||||
| 4Bytes | Offset | |||||||||||||
| 4Bytes | Compressed Size | |||||||||||||
| 4Bytes | Uncompressed Size | |||||||||||||
Note: All numbers are big endian.
Research
| First 5 Index Entries for 'arc.nsa' of みずいろ | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Index Size | Filename | Offset | Filesize1 | Filesize2 | ||||||||||
| 22bytes | b\00.jpg | 0 | 155636 | 155636 | ||||||||||
| 23bytes | b\001.jpg | 155636 | 140467 | 140467 | ||||||||||
| 22bytes | b\01.jpg | 296103 | 169994 | 169994 | ||||||||||
| 22bytes | b\01.jpg | 466097 | 136249 | 136249 | ||||||||||
| 22bytes | b\05.jpg | 602346 | 150570 | 150570 | ||||||||||
Two file sizes suggest the archive supports compression. However in this case, it does not appear to be used due to same size for both filesize values. Compression method is unknown. Would be nice if it was zlib since I have experience implementing that.
Tools
Coming soon...