ZIP

ZIP is an archive file format with optional lossless compression. It is used in Source for the pakfile lump in BSP files, as well as for bonus map BMZ files. The ZIP file format supports several different compression format, although Source only supports uncompressed and, in some engine branches,  LZMA.

Warning:Only certain engine branches and BSP versions support compressed pakfiles; and do, but and do not!

Additionally, the ZIP file format is used for the PK3 and PK4 files used by id Tech 3 and id Tech 4, respectively, which use the standard  Deflate compression instead.

Structs

^[Todo] Source 2013 Multiplayer and Source 2013 Singleplayer versions of zip_uncompressed.h, containing the structs used by Source to load ZIP files

See also

• PAK, uncompressed archive format used by id Tech 2 and GoldSrc
• VPK, uncompressed archive format used by Source and Source 2
• GCF, uncompressed archive format formerly used by Steam, prior to the SteamPipe update.
• BZ2, single-file compression format used by FastDL servers (only in )

External links

•  ZIP (file format) on Wikipedia