CFG File Documentation

If you like and/or use this information, please stop by the Discussion section and leave a comment. It makes me feel better about doing all this work, and frankly, if someone doesn't do it soon, I'm just gonna stop and keep this all to myself. Yeah, you could figure it all out on your own, but let me tell you...from putting it together myself, it's a real pain in the tookus.

Major NOTE: Configuration Files come in many types. The most common type of configuration file, and the one people are interested in most often, is the part configuration file. There are also configuration files for resources, though (and other things). I'll cover Parts, first; and resources next.

Basic Part Making Guidelines

Every part consists of multiple files, including the configuration file, a model and a collision mesh. Under the 0.25 standards, the model and collision mesh must both have a material assigned when creating them in your modeling software and prior to export for use. I am not a modeler, so I will leave that guidance to someone more qualified.

When creating a new part, each of these files (including additional models and meshes, if needed) should all be contained in a single folder which describes or names the part. Even though Squad themselves are horribly inconsistent when building parts, it is best to have the name of the folder, and the names of each of the meshes match the name of the part inside the cfg file (not the name that you see in the parts building! More on that later).

If you making more than a few parts, you may want to create a folder for each type of part. This is certainly an acceptable practice, and one that Squad uses themselves. For example: /Engines/ to place all of your engine designs inside.

If you are making a mod that does things other than just provide a stock-capable parts pack, you may want a more subfolders, one for parts, one for agencies, another for contracts, etc, etc.

No matter how deep you nest your mods' folders, your mod itself should be contained within the /GameData folder with a name that uniquely identifies your mod. It would be wise to name this folder the same as you are marketing your mod (ie: GameData\Modular Kolonization System\ is advertised as Modular Kolonization System or GameData\MechJeb is advertised as MechJeb) (and yes, I know that I'm using examples which actively violate this principle!)

So, I wrote a mod (let's call it ShadowSplat) that modifies some resources, adds a few agencies, and massively updates the parts pack including new engines, fuel tanks, science containers, and electrics. My folder structure might look like this:

KSP_win\GameData\ShadowSplat\
KSP_win\GameData\ShadowSplat\Agencies
KSP_win\GameData\ShadowSplat\Resources
KSP_win\GameData\ShadowSplat\Parts
KSP_win\GameData\ShadowSplat\Parts\Engine
KSP_win\GameData\ShadowSplat\Parts\FuelTank
KSP_win\GameData\ShadowSplat\Parts\Science
KSP_win\GameData\ShadowSplat\Parts\Electrical

PARTS Configuration Files

As of at least 0.24.2^[outdated], the order of the configuration file matters very little. As far as I can tell, you can throw just about anything you want in there in any order. However, for compatability and error-checking reasons, it's best to follow the general structure that exists within stock parts. Many of the stock parts contain commenting-out lines to help you decode where things should go, but, here's a general breakdown, using a mythological part (let's call it "DoesItAll"). DoesItAll will exist in this foldier:

KSP_win\GameData\ShadowSplat\Parts\Engine\DoesItAll

and will consist of the files:

KSP_win\GameData\ShadowSplat\Parts\Engine\DoesItAll.cfg
KSP_win\GameData\ShadowSplat\Parts\Engine\DoesItAll.mu
KSP_win\GameData\ShadowSplat\Parts\Engine\DoesItAll.mbm

Note: this is a general explanation. Additional information can be found be clicking the provided links:

General Parameters

Actual part	Explanation
PART	- specifies that this cfg relates to a part
{
name = DoesItAll	set the hidden name of the part. Spaces are not allowed. Underscores and other special characters are either not allowed or not recommended. This name is used behind the scenes for reference to and from other parts and procedural calls, but is also revealed during crash/damage dialog boxes (F3). It is good programming practice to use a name that at least partially defines the part and/or creator. fuelTankSmallFlat (which is already in use) is not a good name to use here, even though it does describe the part effectively, it does not differentiate between an fuelTankSmallFlat - The T-100 fuel tank and the Rockomax X200-8 Fuel Tank, which could also be considered a fuelTankSmallFlat.
module = Part	This convention is no longer used. Earlier versions of KSP only permitted individual parts to serve as single modules and this was therefore appropriately placed back then. Newer versions allow parts to have/serve as multiple modules and the conventions for defining those modules have been relocated and redefined as its own subgroup. Can still be found in legacy parts that have not been updated, including the "Tail Fin" by C7 Aerospace Division. 5 parts in total are known to still use this convention. FuelLine has the additional property of maxLength, presumably to restrict the length of fuel lines. This method is used on the Stock Fuel Line StrutConnector has the additional properties of linearStrength, angularStrength and maxLength. This method is used on the stock Strut Connector Winglet has the additional properties of dragCoeff and deflectionLiftCoeff. just like the ModuleControlSurface. This method is used on the stock parts Tail Fin, wingletAV-T1, sweptWing and is expected to be deprecated at the next revision of those parts.
author	Simply a place to take credit for your creation / update. This line is not referenced in-game. It is recommended that you utilize the same author credit for all parts that you or your team create under one title. For example, assign all MKS mods to author MKS Team and all OKS mods to author OKS team, even though you are all the same team.

Model Parameters

At this point, you can use the deprecated style of mesh on a line by itself, or open a new sub called MODEL. The preferred method is to use MODEL:

Actual part	Explanation
MODEL {	opens the MODEL sub
model	The name of the mesh. Write its name therein and keep the mesh file in the same directory as the part file.
scale	The scale of the model - depending on the units in your 3D modelling program. If you used one unit = one meter, then use a scale of 1. If it's 1 unit = 0.1 meters, then use a scale of 0.1. Using a 0.1 scale factor and then scaling to fit the other parts is easier than fiddling around with scale factors. This factor will only affect the units involved in node placement and will not affect the actual size of the part.
texture

If you do not use MODEL, you must use mesh to define the parts collision mesh, like so:

Actual part	Explanation
mesh	Mesh defines the mesh and texture package used to create the in-game appearance of your part. Acceptable meshes include .mu files.

Asset Parameters

Actual part	Explanation
mesh = DoesItAll.mu	Mesh defines the mesh and texture package used to create the in-game appearance of your part. Acceptable meshes include .mu files
scale	scale defines the size of your part. I am uncertain as to what will happen when you change this value
specPower	Specific Power? fuelLine
rimFalloff	3 fuelLine
alphaCutoff	Number: 0.0 fuelLine
rescaleFactor	An optional parameter that is not usually included in most parts, but the option is available for resizing a part for personal use. In order to retain correct node placements, the scale parameter must also be proportionally changed to match the new rescaleFactor. The default value for rescaleFactor is 1.25 but can be changed to any value.
iconCenter	0,3,0 Array of integers? (advSasModuleLarge, fuelLine)

Node Definitions

So, node definitions are a little weird. You don't have to use any, and you *can use a whole bunch. Defines where parts attach to other parts. Tricouplers have four: three bottom and one at the top, while most parts simply have two, and a few parts have only one.

Node stack defines where the part vertically stacks with other parts, and node attach defines where on a part's surface other parts attach - in other words, horizontal attachment.

The attachment values relate to an object's origin, and their values correspond to a model's units and scaling factors. A node_stack_bottom with x, y, and z values of (2.5, 5.0, 3.0) will have an attachment node 2.5 units to the right, 5.0 units up, and 3.0 units forward. The next three values refer to the orientation that a particular node will accept other attachments, on a scale of -1.0 to 1.0. These represent the vector that a part will orient itself on when attaching to the node. For example, a fuel tank with a node_stack_bottom will have angx, angy, and angz values of (0.0, -1.0, 0.0). This represents a vector downward relative to the part model, in the negative y direction. A value of (0.0, -1.0, 1.0) would represent a diagonal vector downward and forward, while a value of (1.0, 1.0, 1.0) would represent a vector to the right, up, and forward.

Generally, most parts will have angx, angy, and angz values of either (0.0, -1.0, 0.0) for a node_stack_bottom and (0.0, 1.0, 0.0) for a node_stack_top.

The last value indicates the visual size of an attachment node. Values may be either 0 (small half-meter node), 1 (normal), or 2 (large). This parameter is optional and will default to 1 if nothing is specified.

Keep in mind, naming conventions (_stack_bottom, _stack_top) for nodes only apply to node_attach; they are only helpful in identifying a node's position.

Known node definitions are listed below:

node_stack_top
node_stack_bottom
node_stack_connect01
node_stack_connect02
node_stack_connect03
node_attach
node_stack_bottom01
node_stack_bottom02
node_stack_bottom03
node_stack_bottom04

Each one follows this example, and specifies where other parts can connect to this part:

Actual Part	Explanation
node_attach = 0.00, 0.147, 0.00, 0.0, 1.0, 0.0, 1	specifies the location of the nodes of this part (the green circles).

node_stack_bottom = x, y, z, angx, angy, angz, size
node_stack_top = x, y, z, angx, angy, angz, size
node_attach = x, y, z, angx, angy, angz, size

FX definitions

FX definitions specify visual effects associated with this part, including engine exhausts, explosions, and coloration. Each one is a unique effect, and the only parameters they take is the location/offset that the effect occurs at. The 'active' switch on the end is used to define when this effect will be visible. See the FX Groups listing to know which effect groups are available, and when they are used. It's also possible to assign an effect to more than just one FX Group. If for instance, you want a smoke effect to be visible both when the part activates and also when it deactivates itself, you can do this:

fx_gasBurst_white = x, y, z, angx, angy, angz, activate, deactivate

This is particularly useful if you're defining a lot of effects, like the gas discharges on an RCS module.

 fx_exhaustFlame_yellow = x, y, z, angx, angy, angz, active
 fx_exhaustLight_yellow = x, y, z, angx, angy, angz, active
 fx_smokeTrail_medium = x, y, z, angx, angy, angz, active

Known FX calls are listed below:

fx_exhaustFlame_blue_small
fx_exhaustFlame_yellow
fx_exhaustFlame_yellow_tiny
fx_exhaustFlame_blue
fx_exhaustFlame_white_tiny
fx_exhaustLight_yellow
fx_exhaustLight_blue
fx_smokeTrail_medium
fx_smokeTrail_light
fx_gasBurst_white
fx_exhaustSparks_flameout
fx_exhaustSparks_yellow

Sound FX definitions

Just like Visual effects, sound effects specify an effect to be used by the part. Sound effects are coded using a two-sided equation, the left side specifies the sound or sound file to be used, whereas the right side specifies when to use that particular sound. Known Sound Effects definitions are:

This is pretty easy to use in a basic way, which will suit our needs just fine.

Under this section, comes:

sound_vent_medium = activate
sound_rocket_hard = active
sound_vent_soft = deactivate

Sounds are added to FX Groups, in much the same way smoke and flame effects are. Of course, sounds do not need to be positioned in space, nor do they have rotations, so all you need is to indicate in which FX Group the sound will be executed. As with effects, you can assign multiple groups to a sound.

Since 0.20 GameData structure there are 2 ways to add a sound to a part:

KSP has an internal sound library, which contains a few sound effects. By defining a sound as in the example above, KSP will search for that sound in its internal library.
The second way is to add new sound files which is ONLY possible if adding the sound file to the GameData/modName/parts/partName/part/sounds/ folder. Note that all the sounds are therefore "private", only accessed by that part. For now, the legacy folder or a shared mod folder method doesn't work, devs are probably going to fix this problem in the future.

REMEMBER: If you add a custom sound, the file name must start with sound_ (e.g., sound_myNewSoundEffect.wav).

To use a sound from the KSP internal library or the part/sounds folder, you must not include the extension in the sound name (e.g., sound_vent_medium = activate), otherwise the sound will not work.

Supported files are 48000 Hz .wav files and .ogg

Paired sound types and part status left side specifies sound, right side specifies engine status.

Left Side options	Right Side options
sound_jet_low	decouple
sound_jet_deep	engage
sound_vent_soft	running
sound_vent_large	power
sound_vent_medium	disengage
sound_rocket_hard	flameout
sound_rocket_mini	activate
sound_decoupler_fire	deploy
sound_explosion_low
sound_parachute_open
sound_parachute_single

Editor Parameters

Actual Part	Definition
CrewCapacity	The number of Kerbals that can be seated in this part. Mk1 Command Pod seats 1. Jebediah is so awesome, he only takes up .7 seats. Chuck Norris takes as many seats as he wants. Use 0 to specify a probe.
TechRequired	This is the technology tree node that must be activated in order to have access to this part. Any single word can go here, but if you use a word that is not in the tech tree definition, you may never be able to access your part. Currently, stock KSP comes with the following Technology_tree nodes: start basicRocketry generalRocketry stability survivability advRocketry generalConstruction flightControl scienceTech heavyRocketry fuelSystems advConstruction aerodynamicSystems advFlightControl electrics spaceExploration landing heavierRocketry specializedConstruction actuators supersonicFlight specializedControl precisionEngineering advElectrics advExploration advLanding nuclearPropulsion advMetalworks composites advAerodynamics highAltitudeFlight largeControl unmannedTech ionPropulsion largeElectrics electronics fieldScience veryHeavyRocketry metaMaterials heavyAerodynamics hypersonicFlight advUnmanned specializedElectrics advScienceTech advancedMotors The following Tech Tree nodes are present in stock, but not used unless called for by a mod. experimentalRocketry nanolathing experimentalAerodynamics aerospaceTech experimentalElectrics experimentalScience automation (used by MechJeb) robotics experimentalMotors
entryCost	entryCost represents the amount Kerbits required to unlock this particular part. As such, it could be considered an 'investment' cost in the development. First you have to have the brains to make the thing, then someone has to develop it (that's this cost), then you can get it into production (that's cost, coming later). You can set this to any value you like. Bear in mind that this value has no meaning in Sandbox or Science Modes. It is only used in Career Mode.
cost	cost represents the cost in Kerbits to attach a single instance of this part to your craft. It does not include resources available on your part (fuel tanks' costs are this cost plus the cost of the appropriate resource). cost has no use in Sandbox or Science modes, it is only used in Career mode
category	Contrary to some opinions, parts are not organized in-game according to the folder that they are in in the Squad\parts\ directory. Rather, they are organized according to the category value assigned here. Mods are organized alphabetically according to their sub-directory in parts, and then according to this value. This is why, when you add a mod that is contained in folder "000_NewMod", it's parts appear first and when you add a mod that is contained in "ZZZ_NewMod", it's parts appear last. Currently there are nine useable categories: Command Propulsion (deprecated, but still useable) FuelTank Engine Aero Electrical Structural Utility Wheel
subcategory	subcategory is not currently in use as of [0.90]. It is expected that this control will later be linked to [category] to provide a further subdivision of searchable parts in-game, possibly to cut down on clutter when the parts list gets exceptionally high. With certain mods installed, the Propulsion category already spans several pages. [subcategory] can help control this by provided variants such as [liquidEngine], [LOXfueltank], [SRB], etc
title	title is the in-game name for your part and features such iconic names as 'Command Pod Mk1'. The title of your part can be as long or short as you want, and there are no known limitations on what can be used in the title. This is how your part will be known in-game, on in-game contextual menus and referred to on message boards and forums (hopefully) so take that into consideration.
manufacturer	manufacturer is flavor text (possibly useful in future iterations as a filter for parts) that defines who built or created the part for use (or pulled out of the junk-pile and sold at 10000% mark-up for you to use). Just as with the title of your part, there are no known restrictions on the flavor text, including length. This is KSP, though, so try to be humorous
description	description is the flavor text that describes your parts purpose, motivation, direction, life aspirations, goals, favor colors, and (hopefully) what it can (is supposed to) do. As with other flavor text, there are no known limitations on what can go here, including length. In fact, this flavor text is treated special in-game by being given a text box that automatically scrolls based on the length of the description used. If your part does something unusual, it's probably a good idea to (at least partially) document it here, so people know how to use your part in-game. Many are the parts that have failed their popularity exams because of bad descriptions.

Attachment rules

attachRules defines how this part attaches to or allows attachments from other parts. Though documented in some part files, the documentation is minimalist and difficult to understand, so here's a little clean-up and expansion.

// attachment rules: stack, srfAttach, allowStack, allowSrfAttach, allowCollision
attachRules = 1,1,1,1,1

The rules correspond to the numbers below - 1 is allow, 0 is prevent. The tags are:

stack - Can your part be stacked on others?

SrfAttach - Can your part be placed onto a surface?

allowStack - Will you allow other parts to be stacked on your part?

allowSrfAttach Can other parts be placed on the surface of yours?

allowCollision - A special one: Can your part be placed if part of it is intersecting another part?

Note that you can also force parts attached to this part to attach in a specific symmetry.

// symmetry rules: 0=1x, 1=2x, 2=3x, 3=4x and so on...
stackSymmetry = 3

Standard Part Parameters

This defines how your part performs in the air and its limits. Note that not all of these parameters need to be defined. If they're left out of the cfg file, KSP will use a default value for them. Standard part parameters indicate how the part interacts with the environment in flight mode. From mounting on the launch platform or the runway through take-off and atmospheric interactions to landing and blowing up, this is where physics enters the game

Actual Part	Definition
mass = 1	mass measured in Kerbal tons, describes the 'weight' of your part and is used in calculations involving roll, pitch, yaw, and thrust. The higher the mass, the more energy will be needed to change any of those four parameters. It is also used in making center-of-mass, center-of-lift and center-of-drag calculations, some of which are critical for aerodynamic flight. This is a numerical value, and you can use any positive value. Bear in mind that extremely high positive values for [mass] may make the part unusable in-game or require additional special parts to make usable. This is generally considered poor design.
dragModelType	[dragModelType] describes how your part interacts with drag forces. At present, the known [dragModelType]s include: default
maximum_drag	(could use clarification) The maximum drag coefficient of the part (usually under between 0.2 and 0.3 and < 1). Generally drag when part's direction of travel is along its y-axis.
minimum_drag	(could use clarification) The minimum drag coefficient of the part (usually under between 0.2 and 0.3 and < 1 and lower than maximum_drag). This value is unused if dragModelType is set to default. Generally drag when the part's direction of travel is perpendicular to its y-axis.
angularDrag	(could use clarification) how much angular drag is there/resistance to turning? (Also usually under 1.)
crashTolerance	crashTolerance describes the maximum velocity (in m/s) at which your part can interact with another part without suffering damage (read: blowing up). The higher you set this value, the faster an impact your part can survive. 12 is fairly high, and is the de facto standard for most pods. 14 is useful for landing legs, and 50 is used on some wheels, which are basically indestructible.
BreakingForce	optional [breakingForce] specifies an amount of Force exerted between this part and another part that it is attached to. When exceeded, the two parts will separate (usually catastrophically). Higher values indicate stronger connections.
BreakingTorque	optional. Like [breakingForce], [breakingTorque] defines an amount of Force between two parts, but rather than direct force towards or against, [breakingTorque] refers to rotational forces between the two objects.. It assigns a value that, again, when exceeded, will cause the two parts to separate, with the expected results
maxTemp	Stock KSP uses the [maxTemp] value to determine at what temperature parts will blow up due to overheating. Since Stock KSP doesn't use environmental heating, the only Stock heat sources are engine exhaust, and we will talk about how much heat engines produce later on. Once this value (expressed in degree Celsius {or degrees Kerbius, if you prefer}) is exceeded, your part will spontaneously explode. Managing heat with engines is a critical function of launching higher-powered engines, and design considerations mean that you shouldn't place parts with low [maxTemp] values directly in the path of engine exhaust. Unless you want them to blow up, that is. ~1800 is a good value for most engine assemblies.
ActivatesEvenIfDisconnected	true or false, assumed to specify whether the part will operate when not connected to a vessel (remote control?) Must test. Currently, only know part is the Sepratron I
stagingIcon	Sets the icon in the staging system DECOUPLER_HOR (Radial Decoupler Icon) LIQUID_ENGINE (Liquid Engines, or engines that have controllable thrust) SOLID_BOOSTER (Solid Rocket Boosters, or engines without controllable thrust) RCS_MODULE (Small 4-Way RCS Block Icon) FUEL_TANK (Red Fuel Tank Icon) COMMAND_POD (Generic Command Pod Icon) (Vertical Decoupler) (?)
stageOffset	Can be 0, 1, etc. defines whether this part will create a new stage before itself. This only applies for the automatically generated staging sequence. -1 is used in parachutes...signals that activation of this object does not cause a staging effect?
childStageOffset	Can be 0, 1, etc. defines whether this part will create a new stage after itself. This only applies for the automatically generated staging sequence.
explosionPotential	unknown purpose. Possibly for future use for random failures. Known values are numerical. 0.1 0 (BSLsnakprobe)
fuelCrossFeed	Will the part crossfeed fuel between parts attached to it? allows or restricts fuel moving through this part. Boolean argument: True or False
NoCrossFeedNodeKey = bottom	if set to bottom will keep fuel from flowing FROM bottom nodes (avoiding some stack imbalances). Used with parts with multiple bottom nodes, such as the TVR-1180C Mk1 Stack Tri-Coupler. keeps resources from flowing FROM the named nodes (prevents stack imbalances and such) Use with fuelCrossFeed true to to allow resources to flow into these parts, but not back out. Known parameters: bottom
linearStrength	The amount of stress the given part can sustain without breaking, in a straight back-and-forth direction. Used for fuel lines and strut connectors.
angularStrength	The amount of stress the given part can sustain without breaking, laterally. Used for fuel lines and strut connectors
maxLength	The maximum possible length of this stretchy part, expressed in meters. Used for fuel lines and strut connectors, as they have repeating meshes
vesselType	unknown. May automatically set the Ship Type variable when including parts with a defined [vesselType]. Known [vesselTypes] include: Ship Probe Lander Rover SpaceObject (refers only to PotatoRoids)
PhysicsSignificance	optional. unknown purpose. assumed to default to zero. Appears to be a numerical value. Many parts are 'physicsless' Known parts: radialFlatSolarPanel ladderRadial z-400Battery z-100Battery Known Values: 1

MODULES

Each Configuration file is composed of several sections. Some of these sections are standardized across all parts, others are specific to specific part types. To build or modify a successful part, it is necessary to have an understanding of what each section does, and within those sections what each line of configuration actually does, and what the options are for those lines. This Definitions file will attempt to address each of those questions in turn and is current as of [0.25.0]

Notes: It appears that, with a few exceptions, all definitions can occur in any order in the PART file. Free arrangement is valid for MODEL {}, INTERNAL {}, MODULE {},

MODULEs define what specific parts can do. They are generally calls to C-coded or hard-coded functions that define what functionality these parts have in-game.

name names define the module in use and are a general indication of what the module subtype does. Specific variables are associated with each MODULE.[name]. For example, the Clamp-O-Tron Docking Port Sr. has the MODULE.name ModuleDockingNode and its' associates variables are [referenceAttachNode] and [nodeType]. Some MODULEs share variables with other MODULEs, which can make deciphering their purpose difficult.

known MODULEs, their associated variables, and the meanings of those variables will be explained below.

MODULE Name	MODULE Function	From Modification
ModuleCargoBay	Cargo bays	Stock
ModuleParachute	Parachute Operations	Stock
ModuleSAS	Control System	Stock
KerbalSeat	Internal Seating?	Stock
ModuleLandingGear	One type of Wheel	Stock
ModuleSteering	For Wheel Operations	Stock
FXModuleConstraingPosition	Unsure	Stock
ModuleLandingLeg	For Landing Legs	Stock
RetractableLadder	For Collapsible Ladders	Stock
ModuleReactionWheel	Controls Force of Reaction wheels	Stock
ModuleScienceContainer	Place to store Science	Stock
FlagDecal	Flag Decorations on Parts	Stock
ModuleScienceLab	For Science generators	Stock
ModuleJettison	Fairing removal	Stock
ModuleAlternator	For producing resources based on thrust	Stock
ModuleCommand	For Control	Stock
ModuleEnviroSensor	Unmanned Science	Stock
ModuleControlSurface	Control Surfaces, aelirons	Stock
ModuleAnimateHeat	Unsure	Stock
Module Engines	Engines and Thrust	Stock
FXModuleAnimateThrottle	Unsure	Stock
ModuleEnginesFX	Unsure	Stock
ModuleGimbal	Engine Directionality	Stock
ModuleTestSubject	Contract System	Stock
LaunchClamp	Launch Clamps	Stock
ModuleDockingNode	Docking Ports	Stock
ModuleRCS	Reaction Control Systems	Stock
ModuleResourceIntake	Intakes that produce resources	Stock
ModuleScienceExperiment	Controlling Experiments	Stock
ModuleGrappleNode	For the Claw	Stock
ModuleLight	For external lighting	Stock
ModuleAnimateGeneric	Generic Animation Calls	Stock
ModuleDataTransmitter	For transmitting antennas	Stock
FXModuleLockAtConstraint	Uncertain	Stock
ModuleAsteroid	Unsure	Stock
ModuleDeployableSolarPanel	For Unfoldable Solar panels	Stock
ModuleWheel	For wheels, powered or unpowered	Stock
FXModuleLookAtConstraint	Unknown	Stock
FXModuleConstrainPosition	Unknown	Stock
ModuleAnchoredDecoupler	Decouplers1	Stock
ModuleDecouple	Decoupling Operations	Stock
KASModuleContainer	Containers	KAS / Kerbal Assembly System
KASModuleGrab		KAS / Kerbal Assembly System
KASModuleStrut		KAS / Kerbal Assembly System

SCANset		SCANsat

TweakScale	Changing the size of parts	TweakScale

MechJebCore	Automated ship controls and advanced information systems	MechJeb
ModuleConnectedLivingSpace		MKS/OKS / Modular Kolonization System
KolonyConverter		MKS/OKS / Modular Kolonization System
MKSModule		MKS/OKS / Modular Kolonization System
ExWorkshop		MKS/OKS / Modular Kolonization System
KarboniteAtmoExtractor		MKS/OKS / Modular Kolonization System
KarboniteDrill		MKS/OKS / Modular Kolonization System
KarboniteGenerator		MKS/OKS / Modular Kolonization System
KarboniteParticleExtractor		MKS/OKS / Modular Kolonization System
KarboniteConverter		MKS/OKS / Modular Kolonization System
USI_Converter		MKS/OKS / Modular Kolonization System
USIAnimation		MKS/OKS / Modular Kolonization System
USI_BaseAnchor		MKS/OKS / Modular Kolonization System
USI_InertialDampener		MKS/OKS / Modular Kolonization System
ProxyLogistics		MKS/OKS / Modular Kolonization System
FSanimateGeneric		Firespitter
FStextureSwitch2		Firespitter
FSfuelSwitch		Firespitter
MKSLcentral		MKS/OKS / Modular Kolonization System
ORSModuleAirScoop		MKS/OKS / Modular Kolonization System
ORSModuleAirIntake		MKS/OKS / Modular Kolonization System
ORSResourceScanner		MKS/OKS / Modular Kolonization System
ORSModuleRailsExtraction		MKS/OKS / Modular Kolonization System
ORSModuleParticleCollector		MKS/OKS / Modular Kolonization System
ORSAnimatedScanner		MKS/OKS / Modular Kolonization System
ORSAnimatedExtractor		MKS/OKS / Modular Kolonization System
ModuleSPU		Remote Tech
ModuleRTAntennaPassive		Remote Tech
FSplanePropellerSpinner		Firespitter
FSengineSounds		FSengineSounds

INTERNAL

Internal specifies the internal files used to construct views from the IVA or internal vehicular activity, and are referenced out to the \Spaces\ directory of the relevant part mod. (Squad's internals are in \GameData\Squad\Spaces). INTERNALs have their own .cfg files with their own calls and methods that will not be discussed here. For details of these cfgs, please refer to #REDIRECT INTERNAL cfgs. Squad provides 9 INTERNALs as part of Stock KSP:

crewCabinInternals
cupolaInternal
GenericSpace1
GenericSpace3
landerCabinInternals
landerCabinSmallInternal
mk1CockpitInternal
mk1PodCockpit
PodCockpit

RESOURCE

In parts files, [RESOURCE] refers to a resource that is stored by a part. Each stored resource must be separately defined by a [RESOURCE] call. Any resource may be stored, including those not defined.

variable	example	explanation
name		name of the resource being stored
amount		amount of the resource initially provided. When dragged from the parts list to your vessel, this is the amount of the resource that it attaches with
maxAmount		This is the maximum amount of the resource that this part can store. I haven't tried it myself, but I wouldn't recommend setting amount higher than this.
isTweakable		In the parts file, I believe this is what prevents you from filling the part prior to launch
hideFlow		Prevents display of motion of resource transfer. Not sure why this would be important.

EFFECTS


Thrust	AUDIO
		clip	specifies the location of an audio clip to play during the specified thrust effect.
		volume	?? 2-part array, used twice, once to specify a minimum volume, once to specify a maximum volume, relative to the game's volume settings
		pitch	?? 2-part array, used twice, once to specify a minimum volume, once to specify a maximum volume, relative to the game's volume settings
		loop	boolean, true or false, specifies whether to play the sound once, or to keep playing the sound as long as the specified effect is in operation

Resource Configuration Files

Resources are massively modifiable, but Stock KSP only comes with a few, and these are contained in squad/resources/ResourcesGeneric.cfg. Be extremely careful when modifying ResourcesGeneric.cfg, as it could have unintended side effects for your rockets. Resource definitions follow these conventions:

variable

example

explanation

name

Resource	Mod
LiquidFuel	Stock
Oxidizer	Stock
SolidFuel	Stock
MonoPropellant	Stock
XenonGas	Stock
ElectricCharge	Stock
IntakeAir	Stock
EVA Propellant	Stock
MechanicalParts	MKS/OKS
Recyclables	MKS/OKS
ElectronicParts	MKS/OKS
PlasticParts	MKS/OKS
ModularParts	MKS/OKS
ReplacementParts	MKS/OKS
RepairKits	MKS/OKS
PatchKits	MKS/OKS
Computers	MKS/OKS
Robotics	MKS/OKS
ExoticMinerals	MKS/OKS
RareMetals	MKS/OKS
Chemicals	MKS/OKS
Polymers	MKS/OKS
SpecMachinery	MKS/OKS
AdvMachinery	MKS/OKS
BasicMachinery	MKS/OKS
PunchCards	MKS/OKS
Compost	MKS/OKS
MEP-Manufacturing	MKS/OKS
MEP-Laboratory	MKS/OKS
MEP-Refining	MKS/OKS
MEP-Mining	MKS/OKS
MEP-Environmental	MKS/OKS
MEP-Computing	MKS/OKS

This is the name of the resource. Like the name of your part, it is restricted to one word with no spaces or underscores. This is how the resource is referred to in-game.

density

0.005

[density] is a numerical value between 0 and 1 used in calculations involving mass, storage capacity and units. Lower values mean lower densities, meaning you can get more units in a smaller space.

unitCost

0.8

[unitCost] defines the amount of Kerbits of value for each unit of the specified resource. Any number will do. Positive values indicate that you pay for the resource. Negative values have not been tested (yet), but it is assumed that negative values mean others will pay you to get rid of this resource. (Nuclear waste disposal, anyone?)

flowMode

STACK_PRIORITY_SEARCH
NO_FLOW
STAGE_PRIORITY_FLOW
ALL_VESSEL

[flowMode] defines how the resource moves throughout your vessel whenever the resource is requested by a particular part. There are 4 known methods of flow mode:

transfer

PUMP
NONE

[transfer] is an optional method which specifies how and whether or not a resource may be manually transferred from one location on a vessel to another. There are two known methods of [transfer]:

isTweakable

true
false

[isTweakable] is an optional, boolean method which specifies whether or not a resource may be assigned during construction. Defaults to true. The only accepted arguments are true and false.

Science Definitions Configuration Files

variable

example

explanation

id

crewReport

internal name of the experiment in question

title

Crew Report

Flavor text of the experiment

baseValue

5

Base science value of the experiment

scienceCap

5

Max? value of the experiment, before multipliers

dataScale

1

Multiplier used in calculations

requireAtmosphere

True
False

specifies whether this experiment must be conducted inside an atmosphere

situationMask

63

uses the sum of the situation bits to determine where the experiment can be conducted:

SrfLanded = 1,
SrfSplashed = 2,
FlyingLow = 4,
FlyingHigh = 8,
InSpaceLow = 16,
InSpaceHigh = 32

biomeMask

7

uses the biome number to determine if the experiment has already been conducted

requiredExperimentLevel

0.5

specifies the level of research facility required before the experiment can be conducted

RESULTS

name	example	definition
Too many to list! default MohoSrf	You ran an Atmosphere Analysis, recording various measurements like temperature, pressure and atmosphere composition	Flavor text for the science popup window and science archives that describes what happened when the experiment was conducted.

an array of data that provides flavor text for each scenario that the experiment is conducted in. Left side is a combination of the planet name and the situation bit. No spaces. Right side is the flavor text provided to the GUI.

Contracts Definitions Configuration Files

Contains a single call to STORY_DEF, which then allows for subsets

variable	example	explanation

Contracts Configuration Files

Agent Configuration Files

Agent configuration files specify specific Agents that may have an impact on the performance (read science, money, and prestige) awarded to your Kerbals for completion of specific tasks. Also specifies agency relations to one another. Many of these configurations are not implemented as of [0.90]

// Agency mentalities
// * Commercial   [Increased financial stakes, both for success and failure]
// * Competitive  [competes with companies which we have a negative standing towards, auto-added if any standings set][not impl]
// * Conglomerate  []
// * Startup   []
// * Cooperative  [not impl]
// * Ecomental   [not impl]
// * Economic   []
// * Hasty    [-deadlines -expiry +rep]
// * Patient   [] 
// * Industrial   [not impl] 
// * Perfectionist  [not impl]
// * Pioneer   [Makes agency more likely to offer a contract to something that's never been done before]
// * Record    [Flags agency as a record-keeping organization, focuses on contracts about breaking existing records and doing new things]
// * Scientific   [Agency is more likely to offer science data gathering contracts][not impl]
// * Stern     [Higher Reputation Stakes for both success and failure]
// * EasyGoing   [Lower Reputation Stakes for both success and failure]
// * Kerbalminded  [not impl][Sets up conditions against losing Kerbals]
// * Moral          [not impl]
// syntax guidelines
//
// standings = agent name string, float
// mentality = MentalityClass [float]

Kerbal Configuration Files

Defines what your Kerbals can do. Contained in the Traits.cfg file.

variable	example	definition	in code
name	Pilot Engineer Scientist	describes the Kerbal's job	name = Pilot
title	Any text	Flavor text of the job	title = Engineer
desc	Any text	Flavor text of job description	desc = Pilots provide assistance in flying the vessel.
EFFECT {	Array of skills	describes benefits to vessel for having a Kerbal with this job aboard	EFFECT { name = VesselScienceReturn modifiers = 1.05, 1.1, 1.15, 1.2, 1.25 } EFFECT { name = PartScienceReturn modifiers = 1.05, 1.1, 1.15, 1.2, 1.25 }

Prop Configuration Files

Contained in several different files, usually labeled prop.cfg, in the /Props/ directory. Describes aspects of parts used on IVAs, included buttons, switches, dials, and screens.

PROP
{
  name = directionalKnob
  MODULE
  {
    name = internalGeneric
  }
}
proxy = 0, 0, 0,  0.0225, 0.0075, 0.0225,  0, 1, 0

PROP
{
  name = RadarAltimeter
  MODULE
  {
    name = InternalRadarAltitude
    indicatorName = indicator
    increments
    {
       inc = 0, 0
       inc = 34, 100
       inc = 70, 200
       inc = 110, 300
       inc = 145, 400
       inc = 180, 500
       inc = 215, 1000
       inc = 232, 2000
       inc = 250, 3000
    }
  }
}
proxy = 0, 0, 0,  0.06, 0.01, 0.06,  1.0, 0.5, 0

PROP
{
  name = NavBall
  MODULE
  {
    name = InternalNavBall
    navBallName = NavSphere
    iconUp = 0, 1, 0
    progradeVectorName = progradeVector
    retrogradeVectorName = retrogradeVector
    progradeWaypointName = progradeWaypoint
    retrogradeWaypointName = retrogradeWaypoint
 normalVectorName = NormalVector
 antiNormalVectorName = antiNormalVector
 radialInVectorName = RadialInVector
 radialOutVectorName = RadialOutVector
 maneuverArrowName = ManeuverArrow
 anchorName = Anchor
  }
}
proxy = 0, 0, 0,  0.075, 0.01, 0.09,  1.0, 0.5, 0

PROP
{
  name = switch
  MODULE
  {
    name = internalGeneric
  }
}
proxy = 0, 0, 0,  0.0225, 0.0075, 0.0225,  0, 1, 0

Internals Configuration Files

Strategies Configuration Files

Contained in Strategies.cfg, used to describe the variable strategies available. Each strategy opens with STRATEGY {

variable	samples	description	in code
name	AppreciationCampaignCfg FundraisingCampaignCfg OpenSourceTechProgramCfg UnpaidResearchProgramCfg OutsourcedResearchCfg PatentsLicensingCfg AgressiveNegotiations RecoveryTransponders	Internal Description of Campaign Name. No spaces or special characters	name = AppreciationCampaignCfg
title	Recovery Transponder Fitting	Flavor text for the campaign name	title = Appreciation Campaign
desc	Recovering parts landed far away from the Space Center can be very costly, but I reckon we can reduce those costs by installing better transponders on the parts we launch. These units are not cheap, but they should make it much easier to find parts, improving the recovery value even if they're half-way around Kerbin. What do you say?	Flavor text for the description of the campaign	desc = We could definitely improve our image by putting some effort into reminding Kerbals everywhere of just how great the Space Program is. Advertisement space isn't free, however.
department	Operations Finances Science Public Relations	Specifies the Department that the strategy belongs to. Can only be a department that already exists (as of [0.90]	department = Public Relations
icon		specifies the icon image to be used in conjunction with the campaign. In the campaign selection.	icon = Squad/Strategies/Icons/AppreciationCampaign
groupTag	Basic,A Basic,B Basic,C Misc,D Misc,Recovery	Uncertain, clearly has something to do with grouping	groupTag = Basic,A
minLeastDuration	positive Integers	the minimum shortest amount of time (in days) that the campaign may have (campaigns must run at least this long)	minLeastDuration = 60
maxLeastDuration	positive Integers	the maximum shortest amount of time (in days) that the campaign may have. Using the sliders, campaigns may be adjusted to require at least this long to run	maxLeastDuration = 100
minLongestDuration	positive Integers	the minimum longest duration (in days) of the campaign. Using the sliders, campaigns may be adjusted to only run this long	minLongestDuration = 1200
maxLongestDuration	positive Integers	the maximum longest duration (in days) of the campaign (campaigns cannot run longer than this)	maxLongestDuration = 1600
requiredReputationMin	Integers	Minimum reputation required to purchase this campaign	requiredReputationMin = -500
requiredReputationMax	Integers	The most reputation you can be required to have in order to run this campaign	requiredReputationMax = 750
initialCostFundsMin	Integers	Minimum funds required to purchase this campaign	initialCostFundsMin = 8000.0
initialCostFundsMax	Integers	The largest amount of Kerbits that can be required to purchase this campaign	initialCostFundsMax = 160000.0
initialCostReputation	Integers	Minimum cost in reputation to run this campaign	initialCostReputation = 0.0
initialCostScience	Integers	Minimum cost is science points to run this campaign	initialCostScience = 0.0
hasFactorSlider	True False	Can the campaign be adjusted by increasing inputs and getting greater outputs out of the campaign?	hasFactorSlider = True
factorSliderDefault	Float	multiplication factor for each step along the slider bar	factorSliderDefault = 0.05
factorSliderSteps	Numbers	number of steps/stages in the slider bar	factorSliderSteps = 20
EFFECT {	see table below	describes what the particular campaign actually does	see table below

EFFECTS

There are currently three different EFFECT types available for use in Strategies: CurrencyOperation, ValueModifier, and CurrencyConverter. Each one has different variables and are detailed below.

CurrencyOperation

variable	samples	description	in code
name	CurrencyOperation	internal reference name	name = CurrencyConverter
currency	Funds	input and output for campaign operations	currency = Funds
operation	Multiply Add	operation to perform on currency	operation = Multiply
effectDescription	"to Launch Costs"	Flavor text for the operation to be performed	effectDescription = to Launch Costs
minValue	Float	factor to use in operations	minValue = 1.1
maxValue	Float	factor to use in operations	maxValue = 1.06
AffectReasons	VesselRollout RnDPartPurchase	conditions that trigger the operation	AffectReasons = VesselRollout

ValueModifier

variable	samples	description	in code
name	ValueModifier	internal reference name	name = CurrencyConverter
valueID	VesselRecoveryFactor	Value to be modified	valueId = VesselRecoveryFactor
minValue	Float	factor to use in operations	minValue = 1.1
maxValue	Float	factor to use in operations	maxValue = 1.06

CurrencyConverter

variable	samples	description	in code
name	CurrencyConverter	internal reference name	name = CurrencyConverter
input	Funds Reputation Science	specifies the input for the campaign	input = Funds
output	Reputation Funds Science	specifies the outputs for the campaign	output = Reputation
minShare	Float	specifies the minimum	minShare = 0.0
maxShare	Float	specifies the maximum	maxShare = 1.0
minRate	Float	specifies the minimum rate of conversion, based on slider values	minRate = 0.041667
maxRate	Float	specifies the maximum rate of conversion, based on slider values	maxRate = 0.0520
AffectReasons	ContractReward ScienceTransmission ContractAdvance VesselRecovery VesselRollout RnDPartPurchase	criteria for conversions	AffectReasons = ContractReward, ContractAdvance
effectDescription	gains Income	describes the type of return	effectDescription = Income

Department Configuration Files

Used in the Strategies system, these specify the Departments available that provide different strategies for use.

variable	samples	description	in code
name	Finances Science Public Relations Operations	The department name	name = Public Relations
desc	Flavor Text	describes the department	desc = Linus is Wernher Von Kerman's Intern. Because Wernher himself is too important to be bothered with these boring strategy meetings. He sends his intern in his stead.
color	array of 3 numbers between 0 and 255	specifies the color of the department	color = 149 254 135
avatar	Strategy_MechanicGuy Strategy_PRGuy Strategy_ScienceGuy Strategy_Mortimer	Internal name of the Department Head	avatar = Strategy_PRGuy
headName	Mortimer Kerman Linus Kerman Walt Kerman Gus Kerman	Flavor Text for the Department Head	headName = Walt Kerman
headImage	MORTIMER_KERMAN SCIGUY_KERMAN PRGUY_KERMAN PRGUY_KERMAN	animation file name for the Head shot of the Department Head featured in the strategy selection screen	headImage = PRGUY_KERMAN

CFG File Documentation

Contents

Basic Part Making Guidelines

PARTS Configuration Files

General Parameters

Model Parameters

Asset Parameters

Node Definitions

FX definitions

Sound FX definitions

Editor Parameters

Attachment rules

Standard Part Parameters

MODULES

INTERNAL

RESOURCE

EFFECTS

Resource Configuration Files

Science Definitions Configuration Files

Contracts Definitions Configuration Files

Contracts Configuration Files

Agent Configuration Files

Kerbal Configuration Files

Prop Configuration Files

Internals Configuration Files

Strategies Configuration Files

EFFECTS

Department Configuration Files

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