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What do "istg" and "dstg" mean in .craft files?

Ezriilc

By Ezriilc
in KSP1 Mod Development

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Ezriilc

Ezriilc

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I'm trying to write a .craft file parser that can calculate TWR for each stage, and other stuff, but I can't seem to figure out what "istg" and "dstg" mean with any confidence. I've read everything I can find about it here, and even necro'd another thread, but I figured it would get more attention with a more specific Title.

Can anyone help me to understand "istg" and "dstg" in .craft files? Thanks in advance!

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Ezriilc

Ezriilc

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Posted (edited)

I've built a simple ship with stages, to learn this. The ship has 6 stages as seen in the VAB, but there are 8+ different istg/dstg values... :confused: and that makes my head hurt.

ship = Stages Demo
version = 0.23.0
description = A simple stack, for practice.
type = VAB
PART
{
    part = probeCoreHex_4294616496
    partName = Part
    pos = -2.060127E-06,18.48516,1.002243E-06
    rot = 0,0,0,1
    attRot = 0,0,0,1
    mir = 1,1,1
    istg = 0
    dstg = 0
    sidx = -1
    sqor = -1
    attm = 0
    link = miniFuelTank_4294616460
    link = mumech.MJ2.AR202_4294594312
    attN = bottom,miniFuelTank_4294616460
    EVENTS
    {
    }
    ACTIONS
    {
    }
    MODULE
    {
        name = ModuleCommand
        isEnabled = True
        controlSrcStatusText = 
        EVENTS
        {
            MakeReference
            {
                active = True
                guiActive = True
                guiIcon = Control From Here
                guiName = Control From Here
                category = Control From Here
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
            RenameVessel
            {
                active = True
                guiActive = True
                guiIcon = Rename Vessel
                guiName = Rename Vessel
                category = Rename Vessel
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
        }
    }
    MODULE
    {
        name = ModuleReactionWheel
        isEnabled = True
        stateString = Active
        WheelState = Active
        EVENTS
        {
            OnToggle
            {
                active = True
                guiActive = True
                guiIcon = Toggle Torque
                guiName = Toggle Torque
                category = Toggle Torque
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            Activate
            {
                actionGroup = None
            }
            Deactivate
            {
                actionGroup = None
            }
            Toggle
            {
                actionGroup = None
            }
        }
    }
    MODULE
    {
        name = ModuleSAS
        isEnabled = True
        EVENTS
        {
        }
        ACTIONS
        {
        }
    }
    MODULE
    {
        name = ModuleTripLogger
        isEnabled = True
        EVENTS
        {
        }
        ACTIONS
        {
        }
        Surfaced
        {
        }
        Flew
        {
        }
        FlewBy
        {
        }
        Orbited
        {
        }
        SubOrbited
        {
        }
    }
    RESOURCE
    {
        name = ElectricCharge
        amount = 10
        maxAmount = 10
        flowState = True
        isTweakable = True
        hideFlow = False
        flowMode = Both
    }
}
PART
{
    part = miniFuelTank_4294616460
    partName = Part
    pos = -2.060127E-06,18.12339,1.002243E-06
    rot = 0,0,0,1
    attRot = 0,0,0,1
    mir = 1,1,1
    istg = 0
    dstg = 0
    sidx = -1
    sqor = -1
    attm = 0
    link = liquidEngineMini_4294616432
    attN = top,probeCoreHex_4294616496
    attN = bottom,liquidEngineMini_4294616432
    EVENTS
    {
    }
    ACTIONS
    {
    }
    RESOURCE
    {
        name = LiquidFuel
        amount = 5.735
        maxAmount = 5.735
        flowState = True
        isTweakable = True
        hideFlow = False
        flowMode = Both
    }
    RESOURCE
    {
        name = Oxidizer
        amount = 7
        maxAmount = 7
        flowState = True
        isTweakable = True
        hideFlow = False
        flowMode = Both
    }
}
PART
{
    part = liquidEngineMini_4294616432
    partName = Part
    pos = -2.060127E-06,17.94912,1.002243E-06
    rot = 0,0,0,1
    attRot = 0,0,0,1
    mir = 1,1,1
    istg = 0
    dstg = 0
    sidx = 0
    sqor = 0
    attm = 0
    link = stackDecouplerMini_4294616362
    attN = top,miniFuelTank_4294616460
    attN = bottom,stackDecouplerMini_4294616362
    EVENTS
    {
    }
    ACTIONS
    {
    }
    MODULE
    {
        name = ModuleEngines
        isEnabled = True
        staged = False
        flameout = False
        EngineIgnited = False
        engineShutdown = False
        currentThrottle = 0
        thrustPercentage = 100
        manuallyOverridden = False
        thrustPercentage_UIFlight
        {
            controlEnabled = True
            minValue = 0
            maxValue = 100
            stepIncrement = 0.5
        }
        EVENTS
        {
            Activate
            {
                active = True
                guiActive = True
                guiIcon = Activate Engine
                guiName = Activate Engine
                category = Activate Engine
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
            Shutdown
            {
                active = False
                guiActive = True
                guiIcon = Shutdown Engine
                guiName = Shutdown Engine
                category = Shutdown Engine
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            OnAction
            {
                actionGroup = None
            }
            ShutdownAction
            {
                actionGroup = None
            }
            ActivateAction
            {
                actionGroup = None
            }
        }
    }
    MODULE
    {
        name = ModuleJettison
        isEnabled = True
        EVENTS
        {
            Jettison
            {
                active = False
                guiActive = True
                guiIcon = Jettison
                guiName = Jettison
                category = Jettison
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            JettisonAction
            {
                actionGroup = None
            }
        }
    }
    MODULE
    {
        name = ModuleGimbal
        isEnabled = True
        gimbalLock = False
        EVENTS
        {
            LockGimbal
            {
                active = True
                guiActive = True
                guiActiveEditor = True
                guiIcon = Lock Gimbal
                guiName = Lock Gimbal
                category = Lock Gimbal
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
            FreeGimbal
            {
                active = False
                guiActive = True
                guiActiveEditor = True
                guiIcon = Free Gimbal
                guiName = Free Gimbal
                category = Free Gimbal
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            ToggleAction
            {
                actionGroup = None
            }
        }
    }
}
PART
{
    part = stackDecouplerMini_4294616362
    partName = Part
    pos = -2.060127E-06,17.49821,1.002243E-06
    rot = 0,0,0,1
    attRot = 0,0,0,1
    mir = 1,1,1
    istg = 0
    dstg = 1
    sidx = 1
    sqor = 0
    attm = 0
    link = fuelTankSmallFlat_4294616336
    attN = bottom,fuelTankSmallFlat_4294616336
    attN = top,liquidEngineMini_4294616432
    EVENTS
    {
    }
    ACTIONS
    {
    }
    MODULE
    {
        name = ModuleDecouple
        isEnabled = True
        isDecoupled = False
        EVENTS
        {
            Decouple
            {
                active = True
                guiActive = True
                guiIcon = Decouple
                guiName = Decouple
                category = Decouple
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            DecoupleAction
            {
                actionGroup = None
            }
        }
    }
}
PART
{
    part = fuelTankSmallFlat_4294616336
    partName = Part
    pos = -2.060127E-06,17.1098,1.002243E-06
    rot = 0,0,0,1
    attRot = 0,0,0,1
    mir = 1,1,1
    istg = 2
    dstg = 2
    sidx = -1
    sqor = -1
    attm = 0
    link = liquidEngine3_4294616306
    attN = top,stackDecouplerMini_4294616362
    attN = bottom,liquidEngine3_4294616306
    EVENTS
    {
    }
    ACTIONS
    {
    }
    RESOURCE
    {
        name = LiquidFuel
        amount = 45
        maxAmount = 45
        flowState = True
        isTweakable = True
        hideFlow = False
        flowMode = Both
    }
    RESOURCE
    {
        name = Oxidizer
        amount = 55
        maxAmount = 55
        flowState = True
        isTweakable = True
        hideFlow = False
        flowMode = Both
    }
}
PART
{
    part = liquidEngine3_4294616306
    partName = Part
    pos = -2.060127E-06,16.52667,1.002243E-06
    rot = 0,0,0,1
    attRot = 0,0,0,1
    mir = 1,1,1
    istg = 1
    dstg = 2
    sidx = 0
    sqor = 1
    attm = 0
    link = stackDecoupler_4294616220
    attN = top,fuelTankSmallFlat_4294616336
    attN = bottom,stackDecoupler_4294616220
    EVENTS
    {
    }
    ACTIONS
    {
    }
    MODULE
    {
        name = ModuleEngines
        isEnabled = True
        staged = False
        flameout = False
        EngineIgnited = False
        engineShutdown = False
        currentThrottle = 0
        thrustPercentage = 100
        manuallyOverridden = False
        thrustPercentage_UIFlight
        {
            controlEnabled = True
            minValue = 0
            maxValue = 100
            stepIncrement = 0.5
        }
        EVENTS
        {
            Activate
            {
                active = True
                guiActive = True
                guiIcon = Activate Engine
                guiName = Activate Engine
                category = Activate Engine
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
            Shutdown
            {
                active = False
                guiActive = True
                guiIcon = Shutdown Engine
                guiName = Shutdown Engine
                category = Shutdown Engine
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            OnAction
            {
                actionGroup = None
            }
            ShutdownAction
            {
                actionGroup = None
            }
            ActivateAction
            {
                actionGroup = None
            }
        }
    }
    MODULE
    {
        name = ModuleGimbal
        isEnabled = True
        gimbalLock = False
        EVENTS
        {
            LockGimbal
            {
                active = True
                guiActive = True
                guiActiveEditor = True
                guiIcon = Lock Gimbal
                guiName = Lock Gimbal
                category = Lock Gimbal
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
            FreeGimbal
            {
                active = False
                guiActive = True
                guiActiveEditor = True
                guiIcon = Free Gimbal
                guiName = Free Gimbal
                category = Free Gimbal
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            ToggleAction
            {
                actionGroup = None
            }
        }
    }
    MODULE
    {
        name = ModuleAnimateHeat
        isEnabled = True
        EVENTS
        {
        }
        ACTIONS
        {
        }
    }
    MODULE
    {
        name = ModuleJettison
        isEnabled = True
        EVENTS
        {
            Jettison
            {
                active = False
                guiActive = True
                guiIcon = Jettison
                guiName = Jettison
                category = Jettison
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            JettisonAction
            {
                actionGroup = None
            }
        }
    }
}
PART
{
    part = stackDecoupler_4294616220
    partName = Part
    pos = -2.060127E-06,15.98881,1.002243E-06
    rot = 0,0,0,1
    attRot = 0,0,0,1
    mir = 1,1,1
    istg = 1
    dstg = 3
    sidx = 1
    sqor = 1
    attm = 0
    link = fuelTank4-2_4294616184
    attN = bottom,fuelTank4-2_4294616184
    attN = top,liquidEngine3_4294616306
    EVENTS
    {
    }
    ACTIONS
    {
    }
    MODULE
    {
        name = ModuleDecouple
        isEnabled = True
        isDecoupled = False
        EVENTS
        {
            Decouple
            {
                active = True
                guiActive = True
                guiIcon = Decouple
                guiName = Decouple
                category = Decouple
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            DecoupleAction
            {
                actionGroup = None
            }
        }
    }
}
PART
{
    part = fuelTank4-2_4294616184
    partName = Part
    pos = -2.060127E-06,15.38706,1.002243E-06
    rot = 0,0,0,1
    attRot = 0,0,0,1
    mir = 1,1,1
    istg = 4
    dstg = 4
    sidx = -1
    sqor = -1
    attm = 0
    link = liquidEngine2-2_4294571248
    attN = top,stackDecoupler_4294616220
    attN = bottom,liquidEngine2-2_4294571248
    EVENTS
    {
    }
    ACTIONS
    {
    }
    RESOURCE
    {
        name = LiquidFuel
        amount = 360
        maxAmount = 360
        flowState = True
        isTweakable = True
        hideFlow = False
        flowMode = Both
    }
    RESOURCE
    {
        name = Oxidizer
        amount = 440
        maxAmount = 440
        flowState = True
        isTweakable = True
        hideFlow = False
        flowMode = Both
    }
}
PART
{
    part = mumech.MJ2.AR202_4294594312
    partName = Part
    pos = -2.08908E-06,18.67266,-0.3311886
    rot = -3.090862E-08,0.7071068,-3.090862E-08,-0.7071068
    attRot = 0.7071067,0,0,0.7071067
    mir = 1,1,1
    istg = 0
    dstg = 0
    sidx = -1
    sqor = -1
    attm = 1
    srfN = srfAttach,probeCoreHex_4294616496
    EVENTS
    {
    }
    ACTIONS
    {
    }
    MODULE
    {
        name = ModuleCommand
        isEnabled = True
        controlSrcStatusText = 
        EVENTS
        {
            MakeReference
            {
                active = True
                guiActive = True
                guiIcon = Control From Here
                guiName = Control From Here
                category = Control From Here
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
            RenameVessel
            {
                active = True
                guiActive = True
                guiIcon = Rename Vessel
                guiName = Rename Vessel
                category = Rename Vessel
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
        }
    }
    MODULE
    {
        name = MechJebCore
        isEnabled = True
        EVENTS
        {
        }
        ACTIONS
        {
        }
        MechJebLocalSettings
        {
            MechJebModuleJoke
            {
                unlockParts = 
                unlockTechs = 
            }
            MechJebModuleMenu
            {
                unlockParts = 
                unlockTechs = 
            }
            MechJebModuleCustomWindowEditor
            {
                unlockParts = 
                unlockTechs = flightControl
            }
            MechJebModuleDockingAutopilot
            {
                forceRol = False
                unlockParts = 
                unlockTechs = 
                rol
                {
                    val = 0
                    _text = 0
                }
            }
            MechJebModuleNodeExecutor
            {
                unlockParts = 
                unlockTechs = 
            }
            MechJebModuleNodeEditor
            {
                unlockParts = 
                unlockTechs = advFlightControl
            }
            MechJebModuleAscentPathEditor
            {
                unlockParts = 
                unlockTechs = 
            }
            MechJebModuleInfoItems
            {
                unlockParts = 
                unlockTechs = 
            }
            MechJebModuleJokeObscurePanel
            {
                unlockParts = 
                unlockTechs = 
            }
            MechJebModuleAttitudeAdjustment
            {
                unlockParts = 
                unlockTechs = advFlightControl
            }
            MechJebModuleDockingGuidance
            {
                unlockParts = 
                unlockTechs = advUnmanned
            }
            MechJebModuleCustomInfoWindow
            {
            }
            MechJebModuleCustomInfoWindow
            {
            }
            MechJebModuleCustomInfoWindow
            {
            }
            MechJebModuleCustomInfoWindow
            {
            }
            MechJebModuleLandingAutopilot
            {
                deployGears = True
                deployChutes = True
                unlockParts = 
                unlockTechs = 
                touchdownSpeed
                {
                    val = 0.5
                    _text = 0.5
                }
                limitGearsStage
                {
                    val = 0
                    _text = 0
                }
                limitChutesStage
                {
                    val = 0
                    _text = 0
                }
            }
            MechJebModuleManeuverPlanner
            {
                unlockParts = 
                unlockTechs = advFlightControl
            }
            MechJebModuleRCSBalancerWindow
            {
                unlockParts = 
                unlockTechs = advFlightControl
            }
            MechJebModuleLandingPredictions
            {
                unlockParts = 
                unlockTechs = 
            }
            MechJebModuleLandingGuidance
            {
                unlockParts = 
                unlockTechs = unmannedTech
            }
            MechJebModuleAscentGuidance
            {
                unlockParts = 
                unlockTechs = unmannedTech
            }
            MechJebModuleRoverController
            {
                unlockParts = 
                unlockTechs = 
                heading
                {
                    val = 0
                    _text = 0
                }
                speed
                {
                    val = 10
                    _text = 10
                }
            }
            MechJebModuleRendezvousAutopilotWindow
            {
                unlockParts = 
                unlockTechs = advUnmanned
            }
            MechJebModuleRoverWindow
            {
                unlockParts = 
                unlockTechs = fieldScience
            }
            MechJebModuleRoverWaypointWindow
            {
                unlockParts = 
                unlockTechs = 
            }
            MechJebModuleRendezvousGuidance
            {
                unlockParts = 
                unlockTechs = advUnmanned
            }
            MechJebModuleSettings
            {
                unlockParts = 
                unlockTechs = 
            }
            MechJebModuleRoverWaypointHelpWindow
            {
                unlockParts = 
                unlockTechs = 
            }
            MechJebModuleSmartASS
            {
                mode = ORBITAL
                target = OFF
                advReference = INERTIAL
                advDirection = FORWARD
                forceRol = False
                unlockParts = 
                unlockTechs = flightControl
                srfHdg
                {
                    val = 90
                    _text = 90
                }
                srfPit
                {
                    val = 90
                    _text = 90
                }
                srfRol
                {
                    val = 0
                    _text = 0
                }
                rol
                {
                    val = 0
                    _text = 0
                }
            }
            MechJebModuleSpaceplaneAutopilot
            {
                unlockParts = 
                unlockTechs = 
            }
            MechJebModuleThrustWindow
            {
                unlockParts = 
                unlockTechs = advFlightControl
            }
            MechJebModuleTranslatron
            {
                trans_spd = 0
                unlockParts = 
                unlockTechs = advFlightControl
            }
            MechJebModuleRendezvousAutopilot
            {
                unlockParts = 
                unlockTechs = 
            }
            MechJebModuleAscentAutopilot
            {
                unlockParts = 
                unlockTechs = 
            }
            MechJebModuleTargetController
            {
                unlockParts = 
                unlockTechs = 
            }
            ModExtensionDemo
            {
                unlockParts = 
                unlockTechs = 
            }
            MechJebModuleSpaceplaneGuidance
            {
                unlockParts = 
                unlockTechs = unmannedTech
            }
            MechJebModuleStageStats
            {
                unlockParts = 
                unlockTechs = 
            }
            MechJebModuleWarpHelper
            {
                unlockParts = 
                unlockTechs = advFlightControl
                phaseAngle
                {
                    val = 0
                    _text = 0
                }
            }
            MechJebModuleWarpController
            {
                unlockParts = 
                unlockTechs = 
            }
            MechJebModuleThrustController
            {
                limitThrottle = False
                unlockParts = 
                unlockTechs = 
                maxThrottle
                {
                    val = 1
                    _text = 100
                }
            }
            MechJebModuleRCSController
            {
                unlockParts = 
                unlockTechs = 
            }
            MechJebModuleRCSBalancer
            {
                unlockParts = 
                unlockTechs = 
            }
            MechJebModuleAttitudeController
            {
                Tf = 0.1
                unlockParts = 
                unlockTechs = 
            }
            MechJebModuleStagingController
            {
                unlockParts = 
                unlockTechs = 
            }
            MechJebModuleFlightRecorder
            {
                markUT = 0
                deltaVExpended = 0
                dragLosses = 0
                gravityLosses = 0
                steeringLosses = 0
                markLatitude = 0
                markLongitude = 0
                markAltitude = 0
                markBodyIndex = 1
                maxDragGees = 0
                unlockParts = 
                unlockTechs = 
            }
        }
    }
    MODULE
    {
        name = MechJebAR202
        isEnabled = True
        EVENTS
        {
        }
        ACTIONS
        {
        }
    }
    MODULE
    {
        name = ModuleTripLogger
        isEnabled = True
        EVENTS
        {
        }
        ACTIONS
        {
        }
        Surfaced
        {
        }
        Flew
        {
        }
        FlewBy
        {
        }
        Orbited
        {
        }
        SubOrbited
        {
        }
    }
    RESOURCE
    {
        name = ElectricCharge
        amount = 5
        maxAmount = 5
        flowState = True
        isTweakable = True
        hideFlow = False
        flowMode = Both
    }
}
PART
{
    part = liquidEngine2-2_4294571248
    partName = Part
    pos = -2.060127E-06,14.19137,1.002243E-06
    rot = 0,0,0,1
    attRot = 0,0,0,1
    mir = 1,1,1
    istg = 2
    dstg = 4
    sidx = 0
    sqor = 2
    attm = 0
    link = decoupler1-2_4294559564
    attN = top,fuelTank4-2_4294616184
    attN = bottom,decoupler1-2_4294559564
    EVENTS
    {
    }
    ACTIONS
    {
    }
    MODULE
    {
        name = ModuleEngines
        isEnabled = True
        staged = False
        flameout = False
        EngineIgnited = False
        engineShutdown = False
        currentThrottle = 0
        thrustPercentage = 100
        manuallyOverridden = False
        thrustPercentage_UIFlight
        {
            controlEnabled = True
            minValue = 0
            maxValue = 100
            stepIncrement = 0.5
        }
        EVENTS
        {
            Activate
            {
                active = True
                guiActive = True
                guiIcon = Activate Engine
                guiName = Activate Engine
                category = Activate Engine
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
            Shutdown
            {
                active = False
                guiActive = True
                guiIcon = Shutdown Engine
                guiName = Shutdown Engine
                category = Shutdown Engine
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            OnAction
            {
                actionGroup = None
            }
            ShutdownAction
            {
                actionGroup = None
            }
            ActivateAction
            {
                actionGroup = None
            }
        }
    }
    MODULE
    {
        name = ModuleJettison
        isEnabled = True
        EVENTS
        {
            Jettison
            {
                active = False
                guiActive = True
                guiIcon = Jettison
                guiName = Jettison
                category = Jettison
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            JettisonAction
            {
                actionGroup = None
            }
        }
    }
    MODULE
    {
        name = ModuleGimbal
        isEnabled = True
        gimbalLock = False
        EVENTS
        {
            LockGimbal
            {
                active = True
                guiActive = True
                guiActiveEditor = True
                guiIcon = Lock Gimbal
                guiName = Lock Gimbal
                category = Lock Gimbal
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
            FreeGimbal
            {
                active = False
                guiActive = True
                guiActiveEditor = True
                guiIcon = Free Gimbal
                guiName = Free Gimbal
                category = Free Gimbal
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            ToggleAction
            {
                actionGroup = None
            }
        }
    }
    MODULE
    {
        name = ModuleAnimateHeat
        isEnabled = True
        EVENTS
        {
        }
        ACTIONS
        {
        }
    }
    MODULE
    {
        name = ModuleAlternator
        isEnabled = True
        EVENTS
        {
        }
        ACTIONS
        {
        }
    }
    RESOURCE
    {
        name = ElectricCharge
        amount = 0
        maxAmount = 0
        flowState = True
        isTweakable = False
        hideFlow = True
        flowMode = Both
    }
}
PART
{
    part = decoupler1-2_4294559564
    partName = Part
    pos = -2.060127E-06,13.00508,1.002243E-06
    rot = 0,0,0,1
    attRot = 0,0,0,1
    mir = 1,1,1
    istg = 2
    dstg = 5
    sidx = 1
    sqor = 2
    attm = 0
    link = fuelTank4-2_4294559174
    attN = bottom,fuelTank4-2_4294559174
    attN = top,liquidEngine2-2_4294571248
    EVENTS
    {
    }
    ACTIONS
    {
    }
    MODULE
    {
        name = ModuleDecouple
        isEnabled = True
        isDecoupled = False
        EVENTS
        {
            Decouple
            {
                active = True
                guiActive = True
                guiIcon = Decouple
                guiName = Decouple
                category = Decouple
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            DecoupleAction
            {
                actionGroup = None
            }
        }
    }
}
PART
{
    part = fuelTank4-2_4294559174
    partName = Part
    pos = -2.060127E-06,12.17086,1.002243E-06
    rot = 0,0,0,1
    attRot = 0,0,0,1
    mir = 1,1,1
    istg = 6
    dstg = 6
    sidx = -1
    sqor = -1
    attm = 0
    link = liquidEngine2-2_4294559142
    attN = top,decoupler1-2_4294559564
    attN = bottom,liquidEngine2-2_4294559142
    EVENTS
    {
    }
    ACTIONS
    {
    }
    RESOURCE
    {
        name = LiquidFuel
        amount = 360
        maxAmount = 360
        flowState = True
        isTweakable = True
        hideFlow = False
        flowMode = Both
    }
    RESOURCE
    {
        name = Oxidizer
        amount = 440
        maxAmount = 440
        flowState = True
        isTweakable = True
        hideFlow = False
        flowMode = Both
    }
}
PART
{
    part = liquidEngine2-2_4294559142
    partName = Part
    pos = -2.060127E-06,10.97517,1.002243E-06
    rot = 0,0,0,1
    attRot = 0,0,0,1
    mir = 1,1,1
    istg = 3
    dstg = 6
    sidx = 0
    sqor = 3
    attm = 0
    link = decoupler1-2_4294552894
    attN = top,fuelTank4-2_4294559174
    attN = bottom,decoupler1-2_4294552894
    EVENTS
    {
    }
    ACTIONS
    {
    }
    MODULE
    {
        name = ModuleEngines
        isEnabled = True
        staged = False
        flameout = False
        EngineIgnited = False
        engineShutdown = False
        currentThrottle = 0
        thrustPercentage = 100
        manuallyOverridden = False
        thrustPercentage_UIFlight
        {
            controlEnabled = True
            minValue = 0
            maxValue = 100
            stepIncrement = 0.5
        }
        EVENTS
        {
            Activate
            {
                active = True
                guiActive = True
                guiIcon = Activate Engine
                guiName = Activate Engine
                category = Activate Engine
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
            Shutdown
            {
                active = False
                guiActive = True
                guiIcon = Shutdown Engine
                guiName = Shutdown Engine
                category = Shutdown Engine
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            OnAction
            {
                actionGroup = None
            }
            ShutdownAction
            {
                actionGroup = None
            }
            ActivateAction
            {
                actionGroup = None
            }
        }
    }
    MODULE
    {
        name = ModuleJettison
        isEnabled = True
        EVENTS
        {
            Jettison
            {
                active = False
                guiActive = True
                guiIcon = Jettison
                guiName = Jettison
                category = Jettison
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            JettisonAction
            {
                actionGroup = None
            }
        }
    }
    MODULE
    {
        name = ModuleGimbal
        isEnabled = True
        gimbalLock = False
        EVENTS
        {
            LockGimbal
            {
                active = True
                guiActive = True
                guiActiveEditor = True
                guiIcon = Lock Gimbal
                guiName = Lock Gimbal
                category = Lock Gimbal
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
            FreeGimbal
            {
                active = False
                guiActive = True
                guiActiveEditor = True
                guiIcon = Free Gimbal
                guiName = Free Gimbal
                category = Free Gimbal
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            ToggleAction
            {
                actionGroup = None
            }
        }
    }
    MODULE
    {
        name = ModuleAnimateHeat
        isEnabled = True
        EVENTS
        {
        }
        ACTIONS
        {
        }
    }
    MODULE
    {
        name = ModuleAlternator
        isEnabled = True
        EVENTS
        {
        }
        ACTIONS
        {
        }
    }
    RESOURCE
    {
        name = ElectricCharge
        amount = 0
        maxAmount = 0
        flowState = True
        isTweakable = False
        hideFlow = True
        flowMode = Both
    }
}
PART
{
    part = decoupler1-2_4294552894
    partName = Part
    pos = -2.060127E-06,9.788878,1.002243E-06
    rot = 0,0,0,1
    attRot = 0,0,0,1
    mir = 1,1,1
    istg = 3
    dstg = 7
    sidx = 1
    sqor = 3
    attm = 0
    link = fuelTank4-2_4294552824
    attN = bottom,fuelTank4-2_4294552824
    attN = top,liquidEngine2-2_4294559142
    EVENTS
    {
    }
    ACTIONS
    {
    }
    MODULE
    {
        name = ModuleDecouple
        isEnabled = True
        isDecoupled = False
        EVENTS
        {
            Decouple
            {
                active = True
                guiActive = True
                guiIcon = Decouple
                guiName = Decouple
                category = Decouple
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            DecoupleAction
            {
                actionGroup = None
            }
        }
    }
}
PART
{
    part = fuelTank4-2_4294552824
    partName = Part
    pos = -2.060127E-06,8.954658,1.002243E-06
    rot = 0,0,0,1
    attRot = 0,0,0,1
    mir = 1,1,1
    istg = 8
    dstg = 8
    sidx = -1
    sqor = -1
    attm = 0
    link = sepMotor1_4294542100
    link = sepMotor1_4294541692
    link = launchClamp1_4294534672
    link = launchClamp1_4294534432
    link = liquidEngine2-2_4294529886
    attN = top,decoupler1-2_4294552894
    attN = bottom,liquidEngine2-2_4294529886
    EVENTS
    {
    }
    ACTIONS
    {
    }
    RESOURCE
    {
        name = LiquidFuel
        amount = 360
        maxAmount = 360
        flowState = True
        isTweakable = True
        hideFlow = False
        flowMode = Both
    }
    RESOURCE
    {
        name = Oxidizer
        amount = 440
        maxAmount = 440
        flowState = True
        isTweakable = True
        hideFlow = False
        flowMode = Both
    }
}
PART
{
    part = sepMotor1_4294542100
    partName = Part
    pos = -2.165684E-06,8.957479,-1.207428
    rot = 0,1,0,-4.371139E-08
    attRot = 0,0,0,1
    mir = 1,1,1
    istg = 4
    dstg = 8
    sidx = 0
    sqor = 4
    attm = 1
    sym = sepMotor1_4294541692
    srfN = srfAttach,fuelTank4-2_4294552824
    EVENTS
    {
    }
    ACTIONS
    {
    }
    MODULE
    {
        name = ModuleEngines
        isEnabled = True
        staged = False
        flameout = False
        EngineIgnited = False
        engineShutdown = False
        currentThrottle = 0
        thrustPercentage = 100
        manuallyOverridden = False
        thrustPercentage_UIFlight
        {
            controlEnabled = True
            minValue = 0
            maxValue = 100
            stepIncrement = 0.5
        }
        EVENTS
        {
            Activate
            {
                active = True
                guiActive = True
                guiIcon = Activate Engine
                guiName = Activate Engine
                category = Activate Engine
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
            Shutdown
            {
                active = False
                guiActive = True
                guiIcon = Shutdown Engine
                guiName = Shutdown Engine
                category = Shutdown Engine
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            OnAction
            {
                actionGroup = None
            }
            ShutdownAction
            {
                actionGroup = None
            }
            ActivateAction
            {
                actionGroup = None
            }
        }
    }
    RESOURCE
    {
        name = SolidFuel
        amount = 8
        maxAmount = 8
        flowState = True
        isTweakable = True
        hideFlow = False
        flowMode = Both
    }
}
PART
{
    part = sepMotor1_4294541692
    partName = Part
    pos = -1.849013E-06,8.957479,1.20743
    rot = 0,-8.742278E-08,0,-1
    attRot = 0,0,0,1
    mir = 1,1,1
    istg = 4
    dstg = 8
    sidx = 1
    sqor = 4
    attm = 1
    sym = sepMotor1_4294542100
    srfN = srfAttach,fuelTank4-2_4294552824
    EVENTS
    {
    }
    ACTIONS
    {
    }
    MODULE
    {
        name = ModuleEngines
        isEnabled = True
        staged = False
        flameout = False
        EngineIgnited = False
        engineShutdown = False
        currentThrottle = 0
        thrustPercentage = 100
        manuallyOverridden = False
        thrustPercentage_UIFlight
        {
            controlEnabled = True
            minValue = 0
            maxValue = 100
            stepIncrement = 0.5
        }
        EVENTS
        {
            Activate
            {
                active = True
                guiActive = True
                guiIcon = Activate Engine
                guiName = Activate Engine
                category = Activate Engine
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
            Shutdown
            {
                active = False
                guiActive = True
                guiIcon = Shutdown Engine
                guiName = Shutdown Engine
                category = Shutdown Engine
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            OnAction
            {
                actionGroup = None
            }
            ShutdownAction
            {
                actionGroup = None
            }
            ActivateAction
            {
                actionGroup = None
            }
        }
    }
    RESOURCE
    {
        name = SolidFuel
        amount = 8
        maxAmount = 8
        flowState = True
        isTweakable = True
        hideFlow = False
        flowMode = Both
    }
}
PART
{
    part = launchClamp1_4294534672
    partName = Strut
    pos = -1.434742,7.62464,-1.43474
    rot = 7.378751E-08,-0.3826834,-1.97714E-08,-0.9238796
    attRot = 0,0,0,1
    mir = 1,1,1
    istg = 4
    dstg = 8
    sidx = 2
    sqor = 4
    attm = 1
    sym = launchClamp1_4294534432
    srfN = srfAttach,fuelTank4-2_4294552824
    EVENTS
    {
    }
    ACTIONS
    {
    }
    MODULE
    {
        name = LaunchClamp
        isEnabled = True
        scaleFactor = 3.28345
        height = 8.284793
        towerRot = -7.378751E-08,0.3826834,1.97714E-08,-0.9238796
        EVENTS
        {
            Release
            {
                active = False
                guiActive = True
                guiIcon = Release Clamp
                guiName = Release Clamp
                category = Release Clamp
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            ReleaseClamp
            {
                actionGroup = None
            }
        }
    }
    MODULE
    {
        name = ModuleGenerator
        isEnabled = True
        generatorIsActive = False
        throttle = 0
        EVENTS
        {
            Activate
            {
                active = True
                guiActive = True
                guiIcon = Activate Generator
                guiName = Activate Generator
                category = Activate Generator
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
            Shutdown
            {
                active = True
                guiActive = True
                guiIcon = Shutdown Generator
                guiName = Shutdown Generator
                category = Shutdown Generator
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            ToggleAction
            {
                actionGroup = None
            }
            ActivateAction
            {
                actionGroup = None
            }
            ShutdownAction
            {
                actionGroup = None
            }
        }
    }
}
PART
{
    part = launchClamp1_4294534432
    partName = Strut
    pos = 1.434739,7.62464,1.434742
    rot = -1.977141E-08,-0.9238796,-7.378751E-08,0.3826834
    attRot = 0,0,0,1
    mir = 1,1,1
    istg = 4
    dstg = 8
    sidx = 3
    sqor = 4
    attm = 1
    sym = launchClamp1_4294534672
    srfN = srfAttach,fuelTank4-2_4294552824
    EVENTS
    {
    }
    ACTIONS
    {
    }
    MODULE
    {
        name = LaunchClamp
        isEnabled = True
        scaleFactor = 3.28345
        height = 8.284793
        towerRot = 1.977141E-08,0.9238796,7.378751E-08,0.3826834
        EVENTS
        {
            Release
            {
                active = False
                guiActive = True
                guiIcon = Release Clamp
                guiName = Release Clamp
                category = Release Clamp
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            ReleaseClamp
            {
                actionGroup = None
            }
        }
    }
    MODULE
    {
        name = ModuleGenerator
        isEnabled = True
        generatorIsActive = False
        throttle = 0
        EVENTS
        {
            Activate
            {
                active = True
                guiActive = True
                guiIcon = Activate Generator
                guiName = Activate Generator
                category = Activate Generator
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
            Shutdown
            {
                active = True
                guiActive = True
                guiIcon = Shutdown Generator
                guiName = Shutdown Generator
                category = Shutdown Generator
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            ToggleAction
            {
                actionGroup = None
            }
            ActivateAction
            {
                actionGroup = None
            }
            ShutdownAction
            {
                actionGroup = None
            }
        }
    }
}
PART
{
    part = liquidEngine2-2_4294529886
    partName = Part
    pos = -2.060127E-06,7.758967,1.002243E-06
    rot = 0,0,0,1
    attRot = 0,0,0,1
    mir = 1,1,1
    istg = 5
    dstg = 8
    sidx = 0
    sqor = 5
    attm = 0
    attN = top,fuelTank4-2_4294552824
    EVENTS
    {
    }
    ACTIONS
    {
    }
    MODULE
    {
        name = ModuleEngines
        isEnabled = True
        staged = False
        flameout = False
        EngineIgnited = False
        engineShutdown = False
        currentThrottle = 0
        thrustPercentage = 100
        manuallyOverridden = False
        thrustPercentage_UIFlight
        {
            controlEnabled = True
            minValue = 0
            maxValue = 100
            stepIncrement = 0.5
        }
        EVENTS
        {
            Activate
            {
                active = True
                guiActive = True
                guiIcon = Activate Engine
                guiName = Activate Engine
                category = Activate Engine
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
            Shutdown
            {
                active = False
                guiActive = True
                guiIcon = Shutdown Engine
                guiName = Shutdown Engine
                category = Shutdown Engine
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            OnAction
            {
                actionGroup = None
            }
            ShutdownAction
            {
                actionGroup = None
            }
            ActivateAction
            {
                actionGroup = None
            }
        }
    }
    MODULE
    {
        name = ModuleJettison
        isEnabled = True
        EVENTS
        {
            Jettison
            {
                active = False
                guiActive = True
                guiIcon = Jettison
                guiName = Jettison
                category = Jettison
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            JettisonAction
            {
                actionGroup = None
            }
        }
    }
    MODULE
    {
        name = ModuleGimbal
        isEnabled = True
        gimbalLock = False
        EVENTS
        {
            LockGimbal
            {
                active = True
                guiActive = True
                guiActiveEditor = True
                guiIcon = Lock Gimbal
                guiName = Lock Gimbal
                category = Lock Gimbal
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
            FreeGimbal
            {
                active = False
                guiActive = True
                guiActiveEditor = True
                guiIcon = Free Gimbal
                guiName = Free Gimbal
                category = Free Gimbal
                guiActiveUnfocused = False
                unfocusedRange = 2
                externalToEVAOnly = True
            }
        }
        ACTIONS
        {
            ToggleAction
            {
                actionGroup = None
            }
        }
    }
    MODULE
    {
        name = ModuleAnimateHeat
        isEnabled = True
        EVENTS
        {
        }
        ACTIONS
        {
        }
    }
    MODULE
    {
        name = ModuleAlternator
        isEnabled = True
        EVENTS
        {
        }
        ACTIONS
        {
        }
    }
    RESOURCE
    {
        name = ElectricCharge
        amount = 0
        maxAmount = 0
        flowState = True
        isTweakable = False
        hideFlow = True
        flowMode = Both
    }
}

Edited by Ezriilc
Updated Stages Demo ship file... again.
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Diazo

Diazo

Posted
Posted

My best guess is that dstg is the decoupler stage and istg is the activate stage.

Note that on the engine module they are different, I assume the decoupler goes in the stage right before the engine, so the fairing on the engine separates in the stage before the engine activates.

Everything else lines up if you assume that the istg is never called on the Decoupler and the Launch Stabilizers.

Testing required of course but that would be my first guess.

D.

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Ezriilc

Ezriilc

Posted
  • Author
Posted (edited)
My best guess is that dstg is the decoupler stage and istg is the activate stage.

Note that on the engine module they are different, I assume the decoupler goes in the stage right before the engine, so the fairing on the engine separates in the stage before the engine activates.

Everything else lines up if you assume that the istg is never called on the Decoupler and the Launch Stabilizers.

Testing required of course but that would be my first guess.

D.

EDIT: Thank you very much for responding! I'm very grateful for all help.

I'm not sure what you mean. I've heard that dstg is the "decoupler stage", but I don't know what that really means. Can you break it down more for me?

What do you mean by "istg is never called"? Called by what?

EDIT: And what do you mean by "engine module"? Which MODULE? I don't see istg or dstg in any MODULE.

Something about this seems to completely escape me, in that I can't even understand what you're saying. I'm feeling extra thick today.

Edited by Ezriilc
Added another question.
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Ezriilc

Ezriilc

Posted
  • Author
Posted (edited)

Based on my (updated) Stage Demo ship, I need to determine which stage each part is in from these values.

probeCoreHex_4294616496 
    istg: 0 
    dstg: 0 
miniFuelTank_4294616460 
    istg: 0 
    dstg: 0 
liquidEngineMini_4294616432 
    istg: 0 
    dstg: 0 
stackDecouplerMini_4294616362 
    istg: 0 
    dstg: 1 
fuelTankSmallFlat_4294616336 
    istg: 2 
    dstg: 2 
liquidEngine3_4294616306 
    istg: 1 
    dstg: 2 
stackDecoupler_4294616220 
    istg: 1 
    dstg: 3 
fuelTank4-2_4294616184 
    istg: 4 
    dstg: 4 
mumech.MJ2.AR202_4294594312 
    istg: 0 
    dstg: 0 
liquidEngine2-2_4294571248 
    istg: 2 
    dstg: 4 
decoupler1-2_4294559564 
    istg: 2 
    dstg: 5 
fuelTank4-2_4294559174 
    istg: 6 
    dstg: 6 
liquidEngine2-2_4294559142 
    istg: 3 
    dstg: 6 
decoupler1-2_4294552894 
    istg: 3 
    dstg: 7 
fuelTank4-2_4294552824 
    istg: 8 
    dstg: 8 
sepMotor1_4294542100 
    istg: 4 
    dstg: 8 
sepMotor1_4294541692 
    istg: 4 
    dstg: 8 
launchClamp1_4294534672 
    istg: 4 
    dstg: 8 
launchClamp1_4294534432 
    istg: 4 
    dstg: 8 
liquidEngine2-2_4294529886 
    istg: 5 
    dstg: 8

Edited by Ezriilc
Updated ship file... again.
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Diazo

Diazo

Posted
Posted (edited)

Okay, I'm assuming istg stands for "initialization stage" and dstg stands for "decoupler stage" or similar.

Note that these values are on the Part, not the PartModule.

To test this, do the istg values match the stage the part shows in the editor? Note that the stage may be reversed, with the highest numbered stage being the first stage activated when you launch.

Then certain parts, such as engines, have 2 "stages". The first stage, the istg, is the stage the engine activates in and is straightforward.

However, the second stage would not be visible to the player as it is the engine fairing separation and the dstg of the fairing would be inherited from the attached decoupler.

Then items which don't have stages, such as fuel tanks, command pods, etc. get a stage assigned when they are placed in the editor according to the normal rules, but they don't actually use the istg and dstg value for anything.

Then when the stage in question is activated, the part gets the trigger and sends the message down to all of it's partmodules.

Note this is all my best guess based on how I understand the background code to work, I have not actually tested any of this.

D.

edit: To clarify my previous post, I should have said engine part, not engine module.

edit the second: Parsing your demo ship you linked I'm actually now not sure, it looks like only the dstg value makes sense and is equal to the activating stage as shows in the staging icons on the side of the screen, but I have no clue what istg does.

It looks like the demo ship you linked, I see 9 stages total. The only wildcard is the two sepMotor1's that activate on the first press of the space bar.

So, I'm not sure what istg is, but dstg looks like the current stage of the part.

Edited by Diazo
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Ezriilc

Ezriilc

Posted
  • Author
Posted

Thanks again for all your help, Diazo.

To clarify my previous post, I should have said engine part, not engine module.

Ah yes, thanks.

... it looks like only the dstg value makes sense and is equal to the activating stage as shows in the staging icons on the side of the screen, but I have no clue what istg does.

...

So, I'm not sure what istg is, but dstg looks like the current stage of the part.

Huh [lulz], I just came to the opposite conclusion - that istg is the only one I want. Could you be conflating i for d? By using only istg, I've had some success, but I suspect all that will go South, once I try parsing a different ship with different staging, like asspergrass.

It looks like the demo ship you linked, I see 9 stages total. The only wildcard is the two sepMotor1's that activate on the first press of the space bar.

Yes. I added the sepMotors that way to represent that very common arrangement - even Kerbal X has it.

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Diazo

Diazo

Posted
Posted

What really throws me is that the SepMotors have a dstg of 8 and an istg of 4.

8 is the highest stage number, so is the first stage activated when pressing space.

But no matter which way you go, from low to high, or high to low, 4 is in the middle. How does that translate in any form to being in the first stage activated?

Really confused on istg at this point. I am still assuming the stg part means stage, but no clue on what i means or what that variable does at this point.

D.

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Ezriilc

Ezriilc

Posted
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Posted (edited)

EDIT: NathanKell, thanks for your input!

I do know istg is inverse stage, or so I recall. It should match up in inverse order.

That seems to make sense. Parsing "Kolsys 5.2 Explorer", and using the above logic with istg, I've got it "working" so far. Now to hit it with lots of different ships to see if I can break it.

What really throws me is that the SepMotors have a dstg of 8 and an istg of 4.

8 is the highest stage number, so is the first stage activated when pressing space.

But no matter which way you go, from low to high, or high to low, 4 is in the middle. How does that translate in any form to being in the first stage activated?

Really confused on istg at this point. I am still assuming the stg part means stage, but no clue on what i means or what that variable does at this point.

D.

Yea, I know, right? Thanks for summing up my frustrations in a nutshell. Every time I think I'm getting it, another ship's values blow my theories out of the water. [sigh] If the guys at MechJeb can get it, then so can I... in time... hopefully...

Edited by Ezriilc
I keep forgetting to thank people...
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Ezriilc

Ezriilc

Posted
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Posted

So, what I've learned since posting here, is that by tracking "istg" on engines only, I'm able to accurately tell what stage is the launch stage. However, I have tested this with very few ships, so I'm still not sure of the technique.

Beyond that, I'd like a sure-fire method for determining and understanding the stage information - from a practicable stand-point - for all parts in a ship. Basically, the same that MechJeb does and shows in its Delta-V Stats window, with each stage's mass, TWR, etc..

I'm still hoping that others will jump in here and hook us up.

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Diazo

Diazo

Posted
Posted

How does that work?

From post 5 of this thread where you posted your demo ship istg and dstg values.

The SepMotors have an istg of 4 and a dstg of 8 on a ship with a maximum dstg of 8. You said that the SepMotors activate on the first press of the space bar, how does istg of 4 transfer to that?

D.

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Ezriilc

Ezriilc

Posted
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Posted (edited)
How does that work?

From post 5 of this thread where you posted your demo ship istg and dstg values.

The SepMotors have an istg of 4 and a dstg of 8 on a ship with a maximum dstg of 8. You said that the SepMotors activate on the first press of the space bar, how does istg of 4 transfer to that?

D.

Good question. I'll do my best to explain what I've done.

Remember that I'm only tracking "istg", and only on engines; and that istg/dstg start at zero.

This ship has 6 stages (0-5), making 5 the first, and 4 the second and launch stage, which fires the sepMotors.

Here's the output of my script in its current state:

Data cache is older than 3600 secs or an update was forced; updating... 
Parsed game files in 1 seconds. 
Wrote 211273 bytes to data cache. 
Parsed data cache in 1 seconds. 
Parsed ship in 0 seconds. 
Ship stats calculated in 0 seconds. 

[B]array[/B] [I](size=1)[/I]
  'Stages Demo' [COLOR=#888a85]=>[/COLOR] 
    [B]array[/B] [I](size=17)[/I]
      'version' [COLOR=#888a85]=>[/COLOR] string [COLOR=#cc0000]'0.23.0'[/COLOR] [I](length=6)[/I]
      'description' [COLOR=#888a85]=>[/COLOR] string [COLOR=#cc0000]'A simple stack, for practice.'[/COLOR] [I](length=29)[/I]
      'type' [COLOR=#888a85]=>[/COLOR] string [COLOR=#cc0000]'VAB'[/COLOR] [I](length=3)[/I]
      'crew' [COLOR=#888a85]=>[/COLOR] int [COLOR=#4e9a06]0[/COLOR]
      'parts' [COLOR=#888a85]=>[/COLOR] int [COLOR=#4e9a06]20[/COLOR]
      'struts' [COLOR=#888a85]=>[/COLOR] int [COLOR=#4e9a06]0[/COLOR]
      'engines' [COLOR=#888a85]=>[/COLOR] int [COLOR=#4e9a06]7[/COLOR]
      'decouplers' [COLOR=#888a85]=>[/COLOR] int [COLOR=#4e9a06]4[/COLOR]
      'clamps' [COLOR=#888a85]=>[/COLOR] int [COLOR=#4e9a06]2[/COLOR]
      'stages' [COLOR=#888a85]=>[/COLOR] int [COLOR=#4e9a06]6[/COLOR]
      'launch_stage' [COLOR=#888a85]=>[/COLOR] int [COLOR=#4e9a06]4[/COLOR]
      'part_list' [COLOR=#888a85]=>[/COLOR] 
        [B]array[/B] [I](size=13)[/I]
          'probeCoreHex' [COLOR=#888a85]=>[/COLOR] int [COLOR=#4e9a06]1[/COLOR]
          'miniFuelTank' [COLOR=#888a85]=>[/COLOR] int [COLOR=#4e9a06]1[/COLOR]
          'liquidEngineMini' [COLOR=#888a85]=>[/COLOR] int [COLOR=#4e9a06]1[/COLOR]
          'stackDecouplerMini' [COLOR=#888a85]=>[/COLOR] int [COLOR=#4e9a06]1[/COLOR]
          'fuelTankSmallFlat' [COLOR=#888a85]=>[/COLOR] int [COLOR=#4e9a06]1[/COLOR]
          'liquidEngine3' [COLOR=#888a85]=>[/COLOR] int [COLOR=#4e9a06]1[/COLOR]
          'stackDecoupler' [COLOR=#888a85]=>[/COLOR] int [COLOR=#4e9a06]1[/COLOR]
          'fuelTank4-2' [COLOR=#888a85]=>[/COLOR] int [COLOR=#4e9a06]3[/COLOR]
          'mumech_MJ2_AR202' [COLOR=#888a85]=>[/COLOR] int [COLOR=#4e9a06]1[/COLOR]
          'liquidEngine2-2' [COLOR=#888a85]=>[/COLOR] int [COLOR=#4e9a06]3[/COLOR]
          'decoupler1-2' [COLOR=#888a85]=>[/COLOR] int [COLOR=#4e9a06]2[/COLOR]
          'sepMotor1' [COLOR=#888a85]=>[/COLOR] int [COLOR=#4e9a06]2[/COLOR]
          'launchClamp1' [COLOR=#888a85]=>[/COLOR] int [COLOR=#4e9a06]2[/COLOR]
      'mass' [COLOR=#888a85]=>[/COLOR] float [COLOR=#f57900]23.35[/COLOR]
      'mass_dry' [COLOR=#888a85]=>[/COLOR] float [COLOR=#f57900]10.66751[/COLOR]
      'mass_wet' [COLOR=#888a85]=>[/COLOR] float [COLOR=#f57900]12.683675[/COLOR]
      'thrust' [COLOR=#888a85]=>[/COLOR] int [COLOR=#4e9a06]256[/COLOR]
      'twr' [COLOR=#888a85]=>[/COLOR] float [COLOR=#f57900]1.12[/COLOR]
T+2 seconds[HR][/HR]

Here's my PHP if anyone's interested. Feel free to nit-pick my code - I like input.

<?php
class CraftKitchen{
    static $parts_root = 'KSP/Parts';
    static $data_file = 'game_data.cfg';
    static $data_refresh = 3600;
    static $game_data = array();
    static $ships = array();

    function __construct($craft){
        $this->message = '';
        if( is_file($craft) && is_readable($craft) ){ // File
            $this->update();
            $time = time();
            $this->data = $this->text_to_array(file_get_contents($craft));
            $this->message .= "Parsed ship in ".(time()-$time)." seconds. \r\n";
            $time = time();
            $this->ship_stats($this->data);
            $this->message .= "Ship stats calculated in ".(time()-$time)." seconds. \r\n";
        }elseif( $craft === 'update' ){
            $this->update(true);
        }
    }

    private function update($force=false){
        if(
            filemtime(static::$data_file) < (time() - static::$data_refresh)
            ||
            $force
        ){
            $this->message .= "Data cache is older than ".static::$data_refresh." secs or an update was forced; updating... \r\n";
            $raw_data = array('parts'=>array());
            $time = time();
            foreach( scandir(static::$parts_root) as $part_cat ){
                if( preg_match('/^(\.)|(\.\.)$/i',$part_cat) ){ continue; }
                foreach( scandir(static::$parts_root.'/'.$part_cat) as $part_dir ){
                    if( preg_match('/^(\.)|(\.\.)$/i',$part_dir) ){ continue; }
                    $part_cfg = static::$parts_root.'/'.$part_cat.'/'.$part_dir.'/part.cfg';
                    $part_data = $this->text_to_array( file_get_contents($part_cfg) );
                    $part_data = $part_data['PART_0'];
                    $raw_data['parts'][$part_data['name_0']] = $part_data;
                }
            }
            $this->message .= "Parsed game files in ".(time()-$time)." seconds. \r\n";
            $raw_text = $this->array_to_text($raw_data);
            if( $bytes = file_put_contents( static::$data_file, $raw_text ) ){
                $this->message .= "Wrote ".$bytes." bytes to data cache. \r\n";
            }else{
                $this->message .= "ERROR: Write to data cache failed. \r\n";
            }
        }
        if( !count(static::$game_data) ){
            if( $data_file_text = file_get_contents(static::$data_file) ){
                $time = time();
                static::$game_data = $this->text_to_array( $data_file_text );
                $this->message .= "Parsed data cache in ".(time()-$time)." seconds. \r\n";
            }else{
                $this->message .= "ERROR: Can't read data; no stats available. \r\n";
            }
        }
    }

    private function ship_stats($data){ // The meat of the sammich.
        $this->stats = array();
        $this->parts = array();
        $this->engines = array();
        // Import existing stats.
        foreach($data as $key => $val){
            if( preg_match('/PART/', $key) ){
                $this->parts[] = $val;
            }else{
                $fixed_key = preg_replace('/_\d+/','',$key);
                $this->stats[$fixed_key] = $val;
            }
        }
        // Add some new stats.
        $this->stats = array_merge($this->stats, array(
            'crew'=>0
            ,'parts'=>0
            ,'struts'=>0
            ,'engines'=>0
            ,'decouplers'=>0
            ,'clamps'=>0
            ,'stages'=>0
            ,'launch_stage'=>0
            ,'part_list'=>array()
        ));
        $stats = &$this->stats;
        $first_engine_stage = 0;
        $first_decoupler_stage = 0;
        $first_clamp_stage = 0;
        $name_id_patt = '^(.+)_(\d+)$';
        if( isset(static::$game_data['parts_0']) ){
            $game_parts = static::$game_data['parts_0'];
        }
        // First walkthrough.
        foreach( $this->parts as $part_key => $part ){
            $part_name = preg_filter('/'.$name_id_patt.'/','$1',$part['part_0']);
//            $part_id = preg_filter('/'.$name_id_patt.'/','$2',$part['part_0']);
            $part_name = preg_replace('/\./','_',$part_name);
            $stats['parts']++;
            if( !array_key_exists($part_name, $stats['part_list']) ){
                $stats['part_list'][$part_name] = 1;
            }else{
                $stats['part_list'][$part_name]++;
            }
            if( preg_match('/launchClamp/i',$part_name) ){
                $stats['clamps']++;
                $first_clamp_stage = $part['istg_0']+0;
            }elseif( preg_match('/strut/i',$part_name) ){
                $stats['struts']++;
            }elseif( preg_match('/engine|motor|booster|aerospike/i',$part_name) ){
                $stats['engines']++;
                $this->engines[] = &$this->parts[$part_key];
                // Track highest/first engine "istg" stage:
                if( $part['istg_0'] > $first_engine_stage ){
                    $first_engine_stage = $part['istg_0']+0;
                }
            }elseif( preg_match('/decoupler|separator/i',$part_name) ){
                $stats['decouplers']++;
                $this->decouplers[] = &$this->parts[$part_key];
                // Track highest/first decoupler "istg" stage:
                if( $part['istg_0'] > $first_decoupler_stage ){
                    $first_decoupler_stage = $part['istg_0']+0;
                    // Unused as of yet.
                }
            }
            if( isset($part['CrewCapacity_0']) ){
                $stats['crew'] += $part['CrewCapacity_0'];
            }

            if( isset($game_parts) ){
                foreach( $game_parts as $game_part ){
                    if( preg_match('/'.$part_name.'/', $game_part['name_0']) ){
                        $this->parts[$part_key]['ref'] = &static::$game_data['parts_0'][$part_name.'_0'];
                        $part = $this->parts[$part_key];
                    }
                }
            }
            if( ! isset($part['ref']) && isset($game_parts) ){
                $this->$message .= "ERROR: Can't find part: ".$part_name." \r\n";
            }
        } // Finished first walkthrough.

        $stats['stages'] = $first_engine_stage+1;
        if( $first_clamp_stage ){
            $stats['launch_stage'] = $first_clamp_stage;
        }else{
            $stats['launch_stage'] = $stats['stages']-1;
        }

        if( isset($game_parts) ){ // Parts data are available.
            // Do the fancy stuff.
            $this->stats = array_merge($this->stats, array(
                'mass'=>0
                ,'mass_dry'=>0
                ,'mass_wet'=>0
                ,'thrust'=>0
                ,'twr'=>0
            ));
            $stats = &$this->stats;
            // Known resource masses in tonnes per litre:
            $resources = array(
                'SolidFuel'=>0.0075
                ,'LiquidFuel'=>0.005
                ,'Oxidizer'=>0.005
                ,'IntakeAir'=>0.005 // Really?
                ,'MonoPropellant'=>0.004
                ,'XenonGas'=>0.0001
                ,'ElectricCharge'=>0 // For my pseudo-OCD.
            );
            // Second walkthrough, for GameData.
            foreach( $this->parts as $part_key => $part ){
                if( preg_match('/^launchClamp1_\d+$/',$part['part_0']) ){
//                    $this->message .= "Clamp found and ignored for mass.\r\n";
                }else{
                    // Count masses.
                    $stats['mass_dry'] += @$part['ref']['mass_0']+0;
                    foreach( $part['ref'] as $ref_key => $ref_val ){
                        if( preg_match('/RESOURCE/',$ref_key) ){
                            $resource = $ref_val['name_0'];
                            $amount = $ref_val['amount_0'];
                            if( array_key_exists($resource,$resources) ){
                                $stats['mass_wet'] += ($amount*$resources[$resource]);
                            }else{
                                $this->message .= "Unknown resource: ".$resource."\r\n";
                            }
                        }
                    }
                }
            } // Finished second walkthrough.

            foreach( $this->engines as $engine_key => $engine ){
                if( // ASL thrust from launch stage and before only.
                    $engine['istg_0'] >= $stats['launch_stage']
                ){
                    $thrust_additive = 0;
                    foreach( $engine['ref'] as $ref_key => $ref_val ){
                        if(
                            preg_match('/ModuleEngines/', @$ref_val['name_0'])
                            &&
                            @$ref_val['engineID_0'] !== 'ClosedCycle'
                        ){
                            $thrust_additive += $ref_val['maxThrust_0'];
                        }
                    }
                    // Correct thrust for actual ASL performance.
/*
                    if( preg_match('/JetEngine/', $engine['part_0']) ){
                        $thrust_additive = 135;
                    }elseif( preg_match('/turboFanEngine/', $engine['part_0']) ){
                        $thrust_additive = 110;
                    }elseif( preg_match('/RAPIER/', $engine['part_0']) ){
                        $thrust_additive = 90;
                    }
*/
                    $stats['thrust'] += $thrust_additive;
                }
            }
            $stats['mass'] = $stats['mass_wet']+$stats['mass_dry'];
            $stats['twr'] = ( $stats['thrust'] / ($stats['mass']*9.80665) );
            $stats['mass'] = round( $stats['mass'], 2 );
            $stats['twr'] = round( $stats['twr'], 2 );
        }
        static::$ships[$this->stats['ship']] = $this->stats;
        array_shift(static::$ships[$this->stats['ship']]);
    }

    private function array_to_text($data, $depth=0){ // Recursive, must remain isolated.
        $return = '';
        $indent = '';$i=0;while($i<$depth){$indent .= "\t";$i++;}
        $end = "\r\n";
        $last_key = '';
        foreach( $data as $key => $val ){
            $key = preg_replace('/_\d+/i', '', $key);
            $return .= $indent.$key;
            if( is_array($val) ){
                $return .= $end.$indent.'{'.$end;
                $depth++;
                $return .= $this->array_to_text($val,$depth--);
                $return .= $indent.'}'.$end;
            }else{
                $return .= ' = '.$val.$end;
            }
        }
        return $return;
    }

    private function text_to_array($text){ // This was/is the hard part.
        $return = array();
        $patts = array(
                'header'=>'/^\s*([^=\{\}]+)\s*\{?\s*$/i'
                ,'property'=>'/^\s*([^=\{\}]+)\s*=\s*[^\{\}]*\s*$/i'
                ,'value'=>'/^\s*[^=\{\}]+\s*=\s*([^\{\}]*)\s*$/i'
                ,'open'=>'/^\s*(\{)\s*$/i' // Not used, but handy.
                ,'close'=>'/^\s*(\}|\))\s*$/i'
            );
        $stack = array( &$return ); // $stack & $pointer together track depth.
        $pointer = &$stack[count($stack)-1];

        $lines = explode("\n", $text);
        foreach($lines as $line){
            $line = preg_replace('/\/\/.*/i', '', $line); // Remove comments
            $line = preg_replace('/\x{EF}\x{BB}\x{BF}/','',$line); // Remove BOM.
            if( !trim($line) ){ continue; } // Ignore blanks.
            $line_array = array();
            $result = '';
            foreach( $patts as $patt_key => $patt ){
                $line_array[$patt_key] = rtrim(preg_filter($patt, '$1', $line));
                if( $line_array[$patt_key] === '' ){
                    unset($line_array[$patt_key]);
                }else{
                    $result = $patt_key;
                }
            }
            $line = $line_array;

            if( $result === 'header' ){
                $header = $line['header'];
                $header_count = 0;
                foreach($pointer as $pointer_key => $pointer_val){
                    if( preg_match('/'.$header.'/',$pointer_key) ){
                        $header_count++;
                    }
                }
                $pointer[$header.'_'.$header_count] = array();

                $stack[] = &$pointer[$header.'_'.$header_count]; // Deeper.
                $pointer = &$stack[count($stack)-1];
            }

            if( $result === 'property' || $result === 'value' ){
                $property = isset($line['property']) ? $line['property'] : '';
                $value = isset($line['value']) ? $line['value'] : '';
                $property_count = 0;
                foreach($pointer as $pointer_key => $pointer_val){
                    if( preg_match('/'.$property.'/',$pointer_key) ){
                        $property_count++;
                    }
                }
                $pointer[$property.'_'.$property_count] = $value;
            }

            if( $result === 'close' ){
                array_pop($stack); // Shallower.
                $pointer = &$stack[count($stack)-1];
            }
        }
        return $return;
    }
/* END OF CLASS */
}

echo "<pre>";

$craft = new CraftKitchen("Stages Demo.craft");
echo $craft->message;
var_dump(CraftKitchen::$ships);
echo "T+".(time()-$_SERVER['REQUEST_TIME']).' seconds<hr/>';

?>

Edited by Ezriilc
Updated PHP code and output.
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