Garry's Mod Addon
From Just Solve the File Format Problem
Revision as of 19:21, 27 September 2016 by Hamhock666 (Talk | contribs)
Garry's Mod Addon files are used in the PC game Garry's Mod for storing downloadable game content. They store game files in a hierarchy of folders, so gma files can be created from a folder, or extracted into a hierarchy of folders.
Format
char[4] ident ("GMAD")
uint8 version
uint64 steam_id (unused)
uint64 timestamp
uint8 zero (0)
char addon_name (null terminated string of variable size)
char addon_description (null terminated string of variable size)
char addon_author (null terminated string of variable size) ("Author Name")
uint32 addon_version
struct file_table[]
uint32 file_number
char file_path (null terminated string of variable size)
uint64 file_size
uint32 file_crc
uint32 zero (0)
struct files[]
byte file (file data based on information from the file table)
uint32 addon_crc
