The following command-line options can be chosen from the launcher.
- 1 Graphics
- 2 Game Speed
- 3 HUD
- 4 Gameplay
- 5 Audio
- 6 Multiplayer
- 7 Troubleshooting
- 8 Experimental
- 9 Development Tools
- 9.1 -fps
- 9.2 -pos
- 9.3 -window
- 9.4 -fullscreen_Window
- 9.5 -timerbar
- 9.6 -stats
- 9.7 -coords
- 9.8 -show_mem_usage
- 9.9 -pofspew
- 9.10 -tablecrcs
- 9.11 -missioncrcs
- 9.12 -dis_collisions
- 9.13 -dis_weapons
- 9.14 -output_sexps
- 9.15 -output_scripting
- 9.16 -nograb
- 9.17 -save_render_target
- 9.18 -debug_window
- 9.19 -verify_vps
- 10 Other
- 10.1 Lighting
- 10.2 Graphics
- 10.3 Gameplay
- 10.4 Multiplayer
Only polygons mapped with textures for which a shinemap exists will receive specular mapping; no attempt is made to generate spec maps where they do not exist. Specular maps are specified with the base map name plus "-shine" (i.e. TCov3A-shine.pcx).
"Enable Environment maps"
Only polygons mapped with textures for which a glowmap exists will be glowmapped. Glow maps are specified with the base map name plus "-glow" (i.e. TCov4A-glow.pcx)
Enables the use of TGA and JPG file formats for image files. If a ship is showing up partially invisible, select this option.
Enables PCX files to be loaded into 32-bit memory.
Causes for non-mipmapped textures to have mipmaps generated within the GPU on certain kind of texture formats, (IIRC, DDS formatted textures with a power of 2 size in both width and height).
Since the use of already mipmapped DDS textures has become common, it has become depreciated. The quality of the generated mipmaps depends on each GPU and used driver. It is normally used with -img2dds flag.
"Disable motion debris"
Applies nebula poofs in 2d, effectively preventing them from forming intersections with ships.
"Disable scale-to-window for Movies"
Disables fullscreen scaling of video clips.
"Apply Lighting to Missiles"
"Enable Normal Maps"
Normal maps require GLSL rendering, (see OpenGL Shaders (GLSL) for further info). It needs auxiliary normal maps (the same name of the base map plus "-normal"). DXT5_NM DDS format is needed. (Technical note: DXT5 will work, since only the GREEN and ALPHA channels are read by the current shader system. One direction of lines goes into the GREEN channel, the other direction goes into the ALPHA channel. RED and BLUE can be either base gray (#808080) or black. Usual practice is after creating the DXT5_NM, copy the RED channel to the ALPHA channel, black out the RED and BLUE an then save as either a DXT5 or u8888 (uncompressed) DDS file.)
"Enable Post Processing"
enables the use (if present) of post-processing effects as defined by the post_process.tbl. Bloom usage has an additional cmdline option for setting it's value, most post processing effects are achieved in mission per the mission designer or can be enabled globally in the table.
"Enable 3D Shockwaves"
This only has any effect when both a 2d and 3d shockwave effect are present, otherwise the only available effect is used.
Enables more accurate lighting model for OpenGL mode.
"Compress non-compressed images"
Converts all images to DDS (compressed) format. Decreases memory usage but potentially reduces image quality.
"Disable vertical sync"
"Cache bitmaps between missions"
Will ideally reduce the load-time from one mission to another.
"Another Pair of Scanning Lines"
Adds a second pair of scanning lines to the target window when scanning an object.
"Enable Info next to Target"
Displays target info, such as name and class, beside the targeted object.
"Enables 3D radar"
An Orb style 3D radar will replace the standard 2D version.
"Enable Rearm/Repair Completion Timer"
Displays time remaining until rearm and repair from a support ship is complete.
"Enable the analog Ballistic Ammo gauge"
Adds an ammo gauge to the HUD when armed with a ballistic weapon.
Enables "smart" shield recharging. Shield recharge is distributed to the most damaged shield quadrant instead of being distributed equally across the entire shield and be wasted when a quadrant is full.
"Use Models for Ship Selection"
Uses ship models in ship selection window. It completely disables the standard ANI interface in this screen.
Some mods need a compulsory use of this flag because they don't have available animations for their ships. In this situation, and if it is not used, the game will probably crash to desktop in the ship selection window.
"Use Models for Weapon Selection"
Uses weapon models in weapon loadout window for secondary weapons (missiles and bombs). It completely disables the standard ANI interface in this screen.
Some mods need a compulsory use of this flag because they don't have available animations for their secondary weapons. In this situation, and if it is not used, the game will probably crash to desktop in the weapon loadout window.
"Enable 3D Warp"
Use full geometry for the subspace warp effect.
"Enable Flash upon Warp"
Enable a flash at warp in and warp out.
"Disable Interrupting of AutoPilot"
Tells the game to not allow players to interrupt an autopilot already-in-progress.
Enable feature set for The Babylon Project. This option also forces the Enable 3d Shockwave and Use 3d Models for Weapon Selection options as of 3.6.10 testing builds r4983 or higher.
Enable feature set for The Wing Commander Saga.
It does the following changes to the normal FS2 engine behavior:
- It removes -class name in the briefing ship render window, (the window that appears when ship icons are clicked).
- It removes enemy names ingame for wings of ships.
- Enemies can scream when dying. (Without the flag only friendlies scream).
"Preload mission game sounds"
Useful in preventing game stuttering when sounds are played for the first time.
"Disable Sound and Music"
"Run as Stand Alone Server"
Creates a standalone multi-player server.
"Skip Mainhall and Start Hosting"
Once you launch and choose a pilot within the game, you will immediately have begun to host a game. This can be used in conjunction with several options to customize the game you create: -closed, -restricted, -password, -gamename, -allowabove, and -allowbelow. -startgame has no effect when -standalone is used.
"Start Hosted Server as Closed"
Hosts a new game in a closed state, where no one can join until the in-game "Close" button is cleared. This only works when used in conjunction with -startgame. Cannot be used in conjunction with -restricted or -password.
"Host Confirms Join requests"
Hosts a new game in a restricted state. The host is presented with option to accept or deny each client's request to join the game. This only works when used in conjunction with -startgame. Cannot be used in conjunction with -closed or -password.
Creates a log file with a summary of packets sent and received in multiplayer games. The file is saved as \data\multi.log within the active mod folder—or with main data folder if no mod is active.
This feature is not available in current builds.
"Disables Flight Deck option"
Disables return to the flight deck screen after a mission completes.
Originally used to disable certain crashing behavior as a stop-gap measure.
Originally used to disable certain crashing behavior as a stop-gap measure.
This feature is not available in current builds.
"Software Mode (very slow)"
Reverts to software rendering mode.
"Disable Setting of Gamma"
Disables the gamma settings in the options screen.
"Disable Video Playback"
Disables all video playback.
"Disable Parsing Errors"
Disables some parsing warnings and makes other parse errors non-fatal. Do not rely on this when creating new tables. The errors are there for a reason.
Loads missions the old way. Typically safer, but slower.
"Does this build have Speech?"
Determines if the current build includes text-to-speech.
"Enable inefficient textures"
Enable inefficient texture system.
"Disable OpenGL VBO"
"Don't use cached index buffers (IBX)"
Disables IBX caching of model geometry data. This will dramatically increase load times, but will help troubleshoot a model if one is working incorrectly.
"Load all weapons, even those not used"
"Disable OpenGL RenderTargets"
"Disable GLSL (shader) Support"
Disables the use of GLSL rendering (OpenGL shaders). The game will revert to legacy fixed render pipeline. Please note that Normal and Height map effects will be unavailable.
"Don't use shaders for model rendering"
"Fix Color issues on some ATI cards"
"Use only 2D/stereo for sound effects"
"Allows Ingame Joining"
Enables ingame joining in multiplayer. FIXME: Host option?
Windows-only. Enables voice-recognition for wingmen commands. Must be specifically compiled into a build in order for it to be available; 3.6.10 final includes the feature. See Voice Recognition for more details.
Enables alpha environment mapping. OpenGL only. Environment mapping intensity will be determined from the alpha channel of specular maps.
Enables damage decals.
(Decals have been disabled in builds after May 4, 2006)
Originally used to converts TGA images to 16-bits in order to reduce memory footprint (at the expense of image quality), superseded by -img2dds.
"Show frames per second on HUD"
Displays current frames per second.
"Show Position of Camera"
Displays current position coordinates of camera.
"Run in Window"
Runs the game in a window. No check to make sure that resolution is no higher than your desktop resolution, so be careful.
"Run in Fullscreen Window"
Displays a timing bar across the top of the screen. Timebar format varies by build.
Shows total and free physical memory, virtual memory and system pagefile.
Shows coordinates of the mouse cursor.
"Show Memory Usage"
Shows detailed RAM usage based on file, handler and process usage and display on the left-center side of the screen during mission load and while in mission.
The meaning of the info displayed in the upper right corner of the HUD is:
DYN = dynamic memory, basically anything that's been allocated by the vm_* memory functions. This does NOT indicate total memory usage but does account for most of it.
POF = model memory, how much memory is being used by models (does not include textures)
C-BMP, BMP = bmpman memory, how much is used by the textures/images that are loaded. C-BMP means that you are using -cache_bitmaps and it will try to keep textures in memory between level loads and as the new level is loading it will keep what it needs and unload what it doesn't. Can greatly increase level loading speed, but does so at the cost of memory between level loads. This does not increase overall memory usage though, only during the loading screen. BMP means that it is not cached and all textures are unloaded from memory at the start of level load and all needed textures are then loaded from the disk again.
S-RAM = sound memory, how much is used by the sounds loaded in memory at the time. This counts static sounds only (from sounds.tbl, etc.) and not streaming sounds (music, voices, briefing stuff, etc).
V-RAM = approximate memory usage of video textures. This does not mean that your card has this much memory, and can report higher numbers that your card actually has memory. For OpenGL it also includes some of the geometry data, but this number does not reflect the total memory that your video card is using. It only reports how much data the game has purposefully loaded into API memory (meaning it could be in system memory, video card memory, or AGP memory).
(It only works with debug builds, not with release builds).
Reads all objects in the pof file of the selected mod, and creates an ibx cache file for each object in the data/cache folder for that mod.
Details for each object are output to a pofspew.txt file created in the data folder.
Otherwise, ibx files are created in game before each mission.
Is actually now (or should be) a typed reference rather than as a selection item. Takes 1 argument, usually a descriptive name. Example usage: "-table_crcs MediaVPs" will create a table_crcs.csv file in the running mod (name can be separate of the mod selected) that allows for the validation of the tables used by that mod while on-line. The descriptive parameter given helps "allocate" that .csv file to the mod in question, and as such should closely or exactly match that mods name if possible.
Is actually now (or should be) a typed reference rather than as a selection item. Takes 1 argument, usually a descriptive name. Example usage: "-mission_crcs MediaVPs" will create a mission_crcs.csv file in the running mod (name can be separate of the mod selected) that allows for the validation of the missions used by that mod while on-line. The descriptive parameter given helps "allocate" that .csv file to the mod in question, and as such should closely or exactly match that mods name if possible.
Disables all collisions.
"Disable Weapon Rendering"
Disables weapons rendering.
"Outputs SEXPs to sexps.html"
"Outputs scripting to scripting.html"
Unix only. Disables focus grabbing in a window.
"Save Render Targets to file"
"Display Debug Window"
Lists the fs2_open.log in (nearly)real-time generation.
"Spew VP crcs to vp_crcs.txt"
Exports the CRC values of the VP files being loaded into a vp_crcs.txt file.
The following options are not available as checkboxes in the launcher. Many require parameters, which follow the flag separated by a space. The prototype for use in this case is "-option argument"
These factors can dramatically alter the atmosphere of the game. This page has some sample lighting settings with screenshots.
This must be entered into the "Custom flags" field. This is a multiplier applied to the intensity of ambient lighting. Ambient light is lighting applied to all parts of a ship. FS2's standard value is 120. Try 75 for a good and realistic looking value. However, that is relative.
By default, all ships in FS2 have a light generated on their own, it is more or less similar to a minimal amount of -ambient_factor. This feature was implemented to help the player seeing the ships over a black background. This flag disables this feature. Use it with a low -ambient_factor value to obtain an ultra-realistic dark looking.
This must be used with the -spec command line parameter and must be entered into the "Custom flags" field. Adjusts the size of the shiny spot on ships. Higher number mean smaller spots. Default is 16. However, 11 is recommended. This is a relative value.
This must be used with the -spec command line parameter and must be entered into the "Custom flags" field. Adjusts how much laser weapons contribute to specular highlights. Higher number mean greater contributions. Default is 1.0. However, 0.6 is recommended. This is a relative value.
This must be used with the -spec command line parameter and must be entered into the "Custom flags" field. Adjusts how much suns contribute to specular highlights. Higher numbers mean a greater contribution. Default is 1.0. However, is 0.8 recommended. This is a relative value.
This must be used with the -spec command line parameter and must be entered into the "Custom flags" field. Adjusts how much Beam Weapons contribute to specular highlights. Higher numbers mean a greater contribution. Default is 1.0. However, 0.4 is recommended. This is a relative value.
OpenGL Only. Takes a numerical argument. This value changes the basic shininess of the specular light in OpenGL. A lower value reduces the overall intensity of the light making it broader and less powerful. A higher value makes it more focued and brighter. The default value is 80, and the usable range is 0 to 128 (clamped). The original default value was 60, but it was raised to behave more D3D like.
Requires -post_processing ("Enable Post Processing") command. Default value is 75. Range is 0-??? (unknown maximum range)
Enables height maps (parallax mapping). It only works if -normal is also set. It also needs GLSL rendering, (see OpenGL Shaders (GLSL) for further info). It needs auxiliary height maps (with the same name than base map plus "-height").
Changes the distance from the viewpoint for the near-clipping plane.
Takes one argument decimal specifying the distance to the near-clipping plane.
Allows you to specify a resolution if the desired one cannot be set in the Launcher. For example, -res 1920x1080 would run the game in 1920 x 1080 resolution. Since it requires an argument, it needs to be entered as a custom flag when using the Launcher. The "Run at specified resolution" option the Launcher gives is essentially this, but without being able to actually specify a resolution, it doesn't work.
Specifies in which folders inside FreeSpace 2 directory, the game looks for all the game data (models, missions, textures, tables, ...). Retail version only looks inside Freespace2/data/ structure and Freespace2/vp archives.
This flag allows installing several different mods that modify retail behavior, and switching between them without needing to erase files or having undesired cross effects. Each mod should be installed in its own folder.
It takes one argument string: the chain of names of the used directories. Comma (,) must be used as separator. In this way, -mod dir1,dir2,dir3,...,dirx causes the game to use the following directory precedence:
- ... (the rest of the typed directories) ...
This flag can be indirectly set, (and it is normally set), through Launcher MOD tab and mod.ini file.
Within the Launcher's MOD tab you can select one directory, (let's call it moddir), so the flag is at least set to -mod moddir. If Freespace2/moddir/mod.ini exists it will be used to modify the -mod flag, too.
For further details, see mod.ini
As already said, within the different directories, the data precedence is set by the specified order in the -mod flag. The lowest priority goes to the Freespace2 installation directory.
Inside each directory, data precedence is the following:
- Individual files located in Current_dir/data/ subdir structure. See FS2 Data Structure topic for deeper info about the different folders and contents this structure has.
- Files located inside vp archives. (These vp archives are "similar" to zip archives. They just contain other files and folders. Moreover, files have to be stored using the same data/ structure used outside it).
Vp archives are read in alphabetical order, so aaa.vp files have higher priority than aab.vp files and so on.
The highest priority file overrides the rest of them. In this way, if you have a Mission.fs2 inside Freespace2/Pri1/data/missions/ it doesn't matter that this Mission.fs2 is also inside Freespace2/Pri1/aaa.vp, Freespace2/Pri1/aab.vp, ... or Freespace2/data/missions/. This data precedence allows the user to quickly replace old files by corrected or enhanced ones adding them in a higher priority place.
- As derived from the explanation, the exact names for directories or vp archives are actually irrelevant. It only matters the directory order inside -mod flag argument and the alphabetical order for vp archives inside each used directory.
- This flag is also used by FRED. So if there is special mod info, (like backgrounds maps, ship models or whatever), it must be typed, (Fred2_Open_r.exe -MOD whatever), or FRED won't be able to use it. A special build of wxLauncher is able to configure FRED so that the -mod doesn't have to be done manually see the forum post for more details.
- Be careful while typing the directory names in the flag argument or inside mod.ini files. The program doesn't check if the typed directories exist. If they do not exist, they are just ignored. No warnings, no errors, no messages at all.
Specifies the Field of View for the player eyepoint.
Takes one argument decimal specifying the angle of the viewing cone in radians, from 0 to 2*pi
You can set the cone of view making things look bigger/smaller. The problem with this is that if you choose a small FOV, you will have a squashed look on the edges of your screen - stretched edges with a too high FOV. It is recommended to change the FOV as FS2 normally has some perspective distortion at the screen edges (FOV too high). Set the FOV to something like 0.39 - it will fix the distortion problem, and (as a nice side-effect) will make everything look bigger and more realistic scale-wise. On the other hand, it also stretches the backgrounds - this is usually not a big issue, but it does get annoying if using a skybox. The default is 0.75, if you go higher, you'll get the fish-eye effect. Feel free to experiment. This must be entered into the "Custom flags" field
Specifies the name of the game to be created by the host. This only works when used in conjunction with -startgame.
Takes one argument string, the name to be assigned to the game being created.
This argument does nothing when used with -standalone. To set the name for a standalone server, see Standalone Servers.
Specifies the password for a standalone server. This only works when used in conjunction with -startgame. Cannot be used in conjunction with -closed or -restricted.
Takes one argument string, the required password for the game being created.
Specifies a player's minimum rank for joining a game. This only works when used in conjunction with -startgame.
Takes one argument integer, the points ranking above which a player must be to enter the game.
See related: -startgame
Specifies a player's maximum rank for joining a game on a standalone server. This only works when used in conjunction with -startgame.
Takes one argument integer, the points ranking below which a player must be to enter the game.
See related: -startgame
Specifies the port on which to host a game or serve a standalone game.
Takes one argument integer, the port on which the host will listen for clients.
Caps the maximum object update the server will respond to regardless of what the client has set. If the client is set to request high object updates but the server is capped to low, then that's all the client will get.
Takes one argument integer (0 to 3) which corresponds to the object update cap (With 0 being low and 3 being LAN).