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Command line switches

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Supreme Commander will accept many command line switches. You can set them up in your windows shortcut, or in your GPGnet settings under Tools -> Options -> Supreme Commander -> Command Line Arguments. This is a partial list, with some explanations.

Setting up a skirmish using command lineEdit

Standard switchesEdit

You can automaticly launch a skirmish right after launching the game. To do that, you need to specify a map. The other switches are optionals.

  • /map map_folder
Set the map
  • /faction faction
Set your faction
1 = UEF
2 = Aeon
3 = Cybran
  • /victory "victory_condition"
Set victory conditions
demoralization = Assassination
domination = Supremacy
eradication = Annihilation
sandbox = Sandbox
  • /nofog
Set fog to None
  • /blackfog
Set fog to Unexplored
  • /predeployed
Set pre-build units to On

Example: SupremeCommander.exe /map SCMP_019 /faction 3 /nofog /victory "domination"

Custom switchesEdit

You can create your own switches :

  1. hook lua/SinglePlayerLaunch.lua
  2. go to line 175
  3. add your switch detection code


if HasCommandLineArg("/gamespeed") then
options['GameSpeed'] = GetCommandLineArg("/gamespeed", 1)[1]

This will allow you to adjust game speed with the following switch :

  • /gamespeed "gamespeed"
Set game speed ("normal", "fast" or "adjustable")

Other switchesEdit

Opens the debugging tool at startup
The game engine will monitor all files on the disk, and if it detects a change, it will attempt to re-load that file immediately, if possible. This allows instant in-game updates of things like unit blueprints.
Application will exit when the game is over
/log "log_file"
Logs messages to the given file.
Disable all pre-rendered movies
Set music to Off
Set sound to Off
Do not test for minimum system requirements
Performance test (same as /map PerfTest)
/position X Y
Set the game window position to XxY
/prefs prefs_file
Uses the given file for preferences instead of Game.prefs
/profile profile
/replay "replay_file"
Plays the given replay file. Example: /replay "C:\My Replays\Me vs The Bad Guys.SupremeCommanderReplay"
/savereplay "replay_file"
Save the replay to the given file. Does not work for skirmishes started with /map map_folder - you have to hook lua/SinglePlayerLaunch.lua and edit sessionInfo.createReplay = true (in function SetupCommandLineSkirmish) for this to work.
Shows the log window at startup
/size X Y
Set a XxY resolution. Example: /size 1024 768
/windowed X Y
Start game in a window, with a XxY resolution. ex: /windowed 1024 768

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