// Hide all the existing RF SRB parts.
@PART[proceduralTankSRBRF*]:NEEDS[RealFuels&!ModularFuelTanks]
{
	@category = -1
}


PART:NEEDS[RealFuels&!ModularFuelTanks]
{
	// --- general parameters ---
	name = proceduralSRBRealFuels
	module = Part
	author = AncientGammoner, NK, Tiberion, NathanKell, Swamp Ig

	// --- asset parameters ---
	MODEL
	{
		model = ProceduralParts/Parts/cylinderTank
		scale = 1,1,1
	}
	// The model is positioned so it looks right in the icon for the VAB
	// If you alter the default params, then change the position
	MODEL
	{
		model = ProceduralParts/Parts/SRBBell
		position = 0.0, -1.25, 0.0
		scale = 1,1,1
	}
	// If you want to make another SRB bell, you'll need to have a good look at 
	// the structure of these ones and keep it the same. You can add an extra 
	// SRB_BELL node to the ProceduralSRB module below.
	MODEL
	{
		model = ProceduralParts/Parts/HighRatio
		position = 0.0, -1.25, 0.0
		scale = 1,1,1
	}
	MODEL
	{
		model = ProceduralParts/Parts/LowRatio
		position = 0.0, -1.25, 0.0
		scale = 1,1,1
	}
	scale = 1
	rescaleFactor = 1

	// --- node definitions ---
	node_stack_top = 0.0, 0.5, 0.0, 0.0, 1.0, 0.0, 1
	node_stack_bottom = 0.0, -0.5, 0.0, 0.0, -1.0, 0.0, 1 
	node_attach = 0.5, 0.0, 0.0, 1.0, 0.0, 0.0, 1

	fx_exhaustFlame_yellow = 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, running
	fx_exhaustSparks_yellow = 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, running
	// fx_exhaustLight_yellow = 0.0, 0.0, 0.0, 0.0, 0.0, 1.0, running
	fx_smokeTrail_medium = -5.0, 0.0, 0.0, 0.0, 1.0, 0.0, running

	sound_vent_medium = engage
	sound_rocket_hard = running
	sound_vent_soft = disengage
	sound_explosion_low = flameout

	// --- editor parameters ---
	cost = 0 // 4000
	category = Propulsion
	TechRequired = start
	entryCost = 15000
	subcategory = 0
	title = Procedural Real Fuels SRB
	manufacturer = Kerbchem Industries
	description = Made from viscoelastic nanopolymers (which were discovered by accident... growing in the back of the office mini-fridge) this solid rocket can be stretched to accommodate fuel loads of a range of sizes and shapes. Can be optimized for sea-level or high altitude uses. Hardens to a rigid structure before launch!

	// attachment rules: stack, srfAttach, allowStack, allowSrfAttach, allowCollision
	attachRules = 1,1,1,1,0

	// --- standard part parameters ---
	mass = 3.737
	dragModelType = default
	maximum_drag = 0.3
	minimum_drag = 0.3
	angularDrag = 2
	crashTolerance = 7
	breakingForce = 200
	breakingTorque = 200
	maxTemp = 3600
	bulkheadProfiles = size1, srf
	
	stagingIcon = SOLID_BOOSTER
	
	MODULE
	{
		name = ProceduralPart
		textureSet = SegmentedSRB
		costPerkL = 40
		diameterMin = 0.125
		
		// Lengths for the stock tanks are approximate as one needs to account for the bell.
		TECHLIMIT {
			// RT-5 - 1.25 x 1.2 m = 1.45 kL
			name = start
			diameterMin = 1.0
			diameterMax = 1.75
			lengthMin = 1.0
			lengthMax = 2.0
			volumeMin = 1.0
			volumeMax = 2.0
		}
		TECHLIMIT {
			// RT-10 - 1.25 x 2.4 m = 2.95 kL
			name = start
			diameterMin = 1.0
			diameterMax = 1.75
			lengthMin = 1.0
			lengthMax = 3.0
			volumeMin = 2.0
			volumeMax = 4.0
		}
		TECHLIMIT {
			// Allow cone shaped tanks to have reasonable initial shapes
			name = basicRocketry
			volumeMin = 1.5		
		}
		TECHLIMIT {
			// BACC - 1.25 x 7.1 m = 8.71 kL
			// Sepatron - 0.15 x 0.5 = 0.009 kl
			name = generalRocketry
			lengthMin = 0.125
			lengthMax = 10.0
			volumeMin = 0.001
			volumeMax = 10.0
		}
		// Seems fair that heavy rocketry should enable 2.5 dia
		TECHLIMIT {
			name = heavyRocketry
			diameterMax = 3.0
			volumeMax = 15.0
		}
		TECHLIMIT {
			name = heavierRocketry
			volumeMax = 40.0
		}
		TECHLIMIT {
			name = veryHeavyRocketry
			lengthMax = 15.0
			volumeMax = 50.0
		}
		
		TECHLIMIT {
			// Make everything unlimited for metaMaterials
			name = metaMaterials
			diameterMin = 0.01
			diameterMax = Infinity
			lengthMin = 0.01
			lengthMax = Infinity
			volumeMin = 0.01
			volumeMax = Infinity
		}
	}
	// Don't change the default length without also altering the default position above.
	MODULE
	{
		name = ProceduralShapeCylinder
		displayName = Cylinder
		techRequired = start
		
		length = 2.5
		diameter = 1.25
	}
	MODULE 
	{
		name = ProceduralShapeCone
		displayName = Cone
		techRequired = generalConstruction
		
		// We need the bottom mode to be limit min so that it doesn't
		// get to small to allow the bell to be attached nicely
		coneBottomMode = LimitMin
		
		length = 2.5
		topDiameter = 0.625
		bottomDiameter = 1.25
	}
	MODULE 
	{
		name = ProceduralShapePill
		displayName = Fillet Cylinder
		techRequired = advConstruction
		
		length = 2.5
		diameter = 1.25
		fillet = 0.25
	}
	MODULE 
	{
		name = ProceduralShapeBezierCone
		displayName = Smooth Cone
		techRequired = advConstruction
		
		// We need the bottom mode to be limit min so that it doesn't
		// get to small to allow the bell to be attached nicely
		coneBottomMode = LimitMin		
		
		selectedShape = Round #1
		
		length = 2.5
		topDiameter = 0.625
		bottomDiameter = 1.25
	}
	MODULE
	{
		name = ModuleFuelTanks
	
		volume = 1060
		dedicated = true
		
		type = Solid
    }
	MODULE
	{
		name = ModuleEngineConfigs
		techLevel = 0
		origTechLevel = 0
		engineType = S
		gimbalTransform = SRBBell
		configuration = Normal
		modded = false
		CONFIG
		{
			name = Normal
			heatProduction = 157

			PROPELLANT
			{
				name = SolidFuel
				ratio = 1.0
				DrawGauge = True
			}
			IspSL = 1
			IspV = 1
		}
	}	
	MODULE
	{
		name = ModuleEngines
		thrustVectorTransformName = thrustTransform
		throttleLocked = True
		exhaustDamage = True
		ignitionThreshold = 0.1
		minThrust = 0
		maxThrust = 52
		heatProduction = 157
		useEngineResponseTime = True
		engineAccelerationSpeed = 10.0
		allowShutdown = False
		fxOffset = 0, 0, 0
		PROPELLANT
		{
			name = SolidFuel
			ratio = 1.0
			DrawGauge = True
		}
		atmosphereCurve
		{
			key = 0 250
			key = 1 230
		}		
	}
	MODULE
	{
		name = ProceduralSRB
		costMultiplier = 0.5
		
		srbBellName = SRBBell
		thrustVectorTransformName = thrustTransform
		bottomAttachNodeName = bottom
		
		selectedBellName = Surface
		
		// Burn time for the SRB on part place (default).
		burnTimeME = 30
		
		// The thrust that an SRB with a 1m base could put out.
		// Make this higher to allow for more powerful SRBs at the same diameter.
		// If you don't want tiny bells, use a smaller number. If you want a higher thrust limit, use a bigger number.
		// Note that this goes up on the square of diameter, so a 2m diameter part will give you 2^2 * thrust1m = 2000kN max thrust.
		// Does not affect ships in flight (as in their bells will not rescale)
		thrust1m = 500
		
		// To replicate Advanced Booster SRB
		// See thread here: http://forum.kerbalspaceprogram.com/threads/70676-WIP-Procedural-Parts-The-next-phase-of-Stretchy-SRBs?p=1116650&viewfull=1#post1116650
		// Changing this will not affect ships in flight (but will affect anything loaded into the VAB)
		//thrust1m = 1500
		
		// Heat Produced = heatPerThrust * sqrt(thrust) / (1+total mass). 
		// All stock parts are around 50
		// I realize this model is not very physical, but the way heat is handled in the game is pretty daft
		// Note anything with heat production much above 700 tends to explode. 
		// Does not affect ships in flight (as in their heat production will not rescale)
		heatPerThrust = 40
		
		// If heat is still causing you issues, use the old equation from stretchy SRBs which is easier
		//useOldHeatEquation = true
		
		SRB_BELL 
		{
			name = Surface
			
			realFuelsEngineType = S
			// Degrees of gimble
			gimbalRange = 0.25
			
			
			// Config intrinsic to the model, don't change unless you know what you're doing
			modelName = LowRatioBell
			// Diameter of the bell's choke (in the unscaled model)
			bellChokeDiameter = 0.55
			// Ratio between the bell choke and the bottom of the SRB
			// Should never be > 1.0. Ideal depends on the model somewhat, but big numbers look funny.
			chokeEndRatio = 0.55
		}
		SRB_BELL 
		{
			name = Vacuum

			realFuelsEngineType = S+
			gimbalRange = 0.1
			
			modelName = HighRatioBell
			bellChokeDiameter = 0.32
			chokeEndRatio = 0.32
		}
	}
	MODULE
	{
		name = ModuleGimbal
		gimbalTransformName = SRBBell
		gimbalRange = 0.25
	}
	
}

@PART[*]:HAS[@MODULE[ProceduralSRB],@MODULE[ModuleGimbal]]
{
	@MODULE[ModuleGimbal]
	{
		@gimbalTransformName = thrustTransform
	}
}