xash3d-fwgs/Documentation/environment-variables.md

Environment variables

Xash3D FWGS

The engine respects these environment variables:

Variable	Type	Description
XASH3D_GAME	string	Overrides default game directory. Ignored if -game command line argument is set
XASH3D_BASEDIR	string	Sets path to base (root) directory, instead of current working directory
XASH3D_RODIR	string	Sets path to read-only base (root) directory. Ignored if -rodir command line argument is set
XASH3D_EXTRAS_PAK1	string	Archive file from specified path will be added to virtual filesystem search path in the lowest possible priority
XASH3D_EXTRAS_PAK2	string	Similar to XASH3D_EXTRAS_PAK1 but next to it in priority list

Environment variables NOT listed in the table above are used internally, and aren't considered as stable interface.

mdldec

Variable	Type	Description
MDLDEC_ACT_PATH	string	If set, will read activities list from this path