== Command line parameters ==
This is a full list of the supported command line parameters. A number of
additional parameters are supported in addition to those present in the DOS
version.
=== General options ===
-artiskip Don't allow artifacts to be used when the
run key is held down.
-cdrom Save configuration data and savegames in
c:\hexndata, allowing play from CD.
(windows only)
-config <file> Load main configuration from the specified
file, instead of the default.
-dumpsubstconfig <filename> Read all MIDI files from loaded WAD files,
dump an example substitution music config
file to the specified filename and quit.
-extraconfig <file> Load additional configuration from the
specified file, instead of the default.
-file <files> Load the specified PWAD files.
-iwad <file> Specify an IWAD file to use.
-loadgame <s> Load the game in savegame slot s.
-mb <mb> Specify the heap size, in MiB (default 16).
-mmap Use the OS's virtual memory subsystem to
map WAD files directly into memory.
-nomonsters Disable monsters.
-nomusic Disable music.
-nosfx Disable sound effects.
-nosound Disable all sound output.
-ravpic Take screenshots when F1 is pressed.
-respawn Monsters respawn after being killed.
-savedir <directory> Specify a path from which to load and save
games. If the directory does not exist then
it will automatically be created.
-scripts <path> Development option to specify path to level
scripts.
-skill <skill> Set the game skill, 1-5 (1: easiest, 5:
hardest). A skill of 0 disables all
monsters.
=== Compatibility ===
-setmem <version> Specify DOS version to emulate for NULL pointer
dereference emulation. Supported versions are:
dos622, dos71, dosbox. The default is to emulate DOS
7.1 (Windows 98).
-v10override If provided, the check for the v1.0 IWAD file is
disabled, even though it will almost certainly cause
the game to crash.
=== Demo options ===
-demoextend Record or playback a demo without automatically
quitting after either level exit or player respawn.
-longtics Record or playback a demo with high resolution
turning.
-maxdemo <size> Specify the demo buffer size (KiB)
-playdemo <demo> Play back the demo named demo.lmp.
-shortticfix Smooth out low resolution turning when recording a
demo.
-strictdemos When recording or playing back demos, disable any
extensions of the vanilla demo format - record demos
as vanilla would do, and play back demos as vanilla
would do.
-timedemo <demo> Play back the demo named demo.lmp, determining the
framerate of the screen.
=== Display options ===
-1 Don't scale up the screen. Implies -window.
-2 Double up the screen to 2x its normal size. Implies
-window.
-3 Double up the screen to 3x its normal size. Implies
-window.
-fullscreen Run in fullscreen mode.
-geometry <WxY> Specify the dimensions of the window. Implies -window.
-height <y> Specify the screen height, in pixels. Implies -window.
-noblit Disable blitting the screen.
-nograbmouse Don't grab the mouse when running in windowed mode.
-nomouse Disable the mouse.
-width <x> Specify the screen width, in pixels. Implies -window.
-window Run in a window.
=== Networking options ===
-autojoin Automatically search the local LAN for a multiplayer
server and join it.
-class <n> Specify player class: 0=fighter, 1=cleric, 2=mage,
3=pig.
-connect <address> Connect to a multiplayer server running on the given
address.
-deathmatch Start a deathmatch game.
-dup <n> Reduce the resolution of the game by a factor of n,
reducing the amount of network bandwidth needed.
-extratics <n> Send n extra tics in every packet as insurance
against dropped packets.
-newsync Use new network client sync code rather than the
classic sync code. This is currently disabled by
default because it has some bugs.
-nodes <n> Autostart the netgame when n nodes (clients) have
joined the server.
-port <n> Use the specified UDP port for communications,
instead of the default (2342).
-privateserver When running a server, don't register with the
global master server. Implies -server.
-randclass In deathmatch mode, change a player's class each
time the player respawns.
-server Start a multiplayer server, listening for
connections.
-servername <name> When starting a network server, specify a name for
the server.
-solo-net Start the game playing as though in a netgame with a
single player. This can also be used to play back
single player netgame demos.
-timer <n> For multiplayer games: exit each level after n
minutes.
=== Dehacked and WAD merging ===
-aa <files> Equivalent to "-af <files> -as <files>".
-af <files> Simulates the behavior of NWT's -af option, merging
flats into the main IWAD directory. Multiple files
may be specified.
-as <files> Simulates the behavior of NWT's -as option, merging
sprites into the main IWAD directory. Multiple files
may be specified.
-deh <files> Load the given dehacked patch(es)
-merge <files> Simulates the behavior of deutex's -merge option,
merging a PWAD into the main IWAD. Multiple files may
be specified.
-nocheats Ignore cheats in dehacked files.
-nwtmerge <files> Simulates the behavior of NWT's -merge option.
Multiple files may be specified.
