⚠️ WARNING: In an attempt to solidify and unite all Alamo-Engine related tools/libraries made by the Empire at War community, development has been moved to the consolidated AlamoEngine-Tools/PetroglyphTools repository.
Implements the Petroglyph v1.0 meg archive file type in C#.
Special thanks to @MikeLankamp for decoding the files and hosting them on Petrolution.
Mega Files (extension: .MEG) in Petroglyph's games are used to store the collection of game files. By packing these files into a single large file, the operating-system overhead of storing and opening each individual file is removed and it helps avoid fragmentation.
Each Mega File begins with a header, followed by the Filename Table, the File Table and finally, the file data. All fields are in little-endian format.
| Offset | Name | Type | Description |
|---|---|---|---|
+0000h |
numFilenames | uint32 |
Number of filenames in the Filename Table |
+0004h |
numFiles | uint32 |
Number of files in the File Table |
| Offset | Name | Type | Description |
|---|---|---|---|
+0000h |
length | uint16 |
Length of the filename, in characters |
+0004h |
name | length |
The ASCII filename |
| Offset | Name | Type | Description |
|---|---|---|---|
+0000h |
crc | uint32 |
CRC-32 of the filename |
+0004h |
index | uint32 |
Index of this record in the table |
+0008h |
size | uint32 |
Size of the file, in bytes |
+000Ch |
start | uint32 |
Start of the file, in bytes , from the start of the Mega File |
+0010h |
name | uint32 |
Index in the Filename Table of the filename |