youen
/
KSPAerostats
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
Browse Source

added helium resource, with the corresponding tank part (wip)

master
Youen Toupin 9 years ago
parent
67bdfa615c
commit
a49fb7b123
7 changed files with 134 additions and 139 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 6
      Parts/Balloon/balloon.cfg
  2. 31
      Parts/HeliumTankRadial/heliumTankRadial.cfg
  3. BIN
      Parts/HeliumTankRadial/ksp_r_xenonTank_diff.dds
  4. BIN
      Parts/HeliumTankRadial/model.mu
  5. 210
      Plugin/ModuleAerostat.cs
  6. 16
      TweakScale.cfg
  7. 10
      resources.cfg

6
Parts/Balloon/balloon.cfg
Unescape View File

@ -11,11 +11,11 @@ PART
sound_parachute_open = activate
TechRequired = advLanding
entryCost = 3500
cost = 400
cost = 5000
category = Utility
subcategory = 0
title = Balloon
description = A test balloon.
description = A big balloon that can be inflated with helium (sold separately).
attachRules = 1,0,0,1,0
mass = 0.2
dragModelType = default
@ -30,7 +30,5 @@ PART
MODULE
{
name = ModuleAerostat
DeployAnimation = semiDeployLarge
InflateAnimation = fullyDeployLarge
}
}

31
Parts/HeliumTankRadial/heliumTankRadial.cfg
Unescape View File

@ -0,0 +1,31 @@
PART
{
name = heliumTankRadial
module = Part
author = Youen
mesh = model.mu
rescaleFactor = 1
node_attach = 0.0, 0.0, -0.1875, 0.0, 0.0, -1.0
TechRequired = advLanding
entryCost = 2000
cost = 2200
category = FuelTank
subcategory = 0
title = Helium tank
description = Disposable helium tank for all your lifting needs (and birthday party balloons). Do not refill after use.
attachRules = 0,1,0,0,1
mass = 0.003
dragModelType = default
maximum_drag = 0.2
minimum_drag = 0.2
angularDrag = 2
crashTolerance = 12
maxTemp = 2000 // = 2900
bulkheadProfiles = srf
RESOURCE
{
name = Helium
amount = 30
maxAmount = 30
}
}

BIN
Parts/HeliumTankRadial/ksp_r_xenonTank_diff.dds
View File

Binary file not shown.

BIN
Parts/HeliumTankRadial/model.mu
View File

Binary file not shown.

210
Plugin/ModuleAerostat.cs
Unescape View File

@ -8,12 +8,6 @@ namespace Aerostats
{
public class ModuleAerostat : PartModule
{
[KSPField(isPersistant = false, guiActive = false)]
public string DeployAnimation = "semiDeploy";
[KSPField(isPersistant = false, guiActive = false)]
public string InflateAnimation = "fullyDeploy";
// In this class, amount of gas Q is specified in m^3 at stp (standard pressure of 100kPa and temperature of 0°C = 273K). Ideal gas equation P.V = n.R.T gives us the equivalent number of moles: n = P.V/R/T = 100000.Q/8.314/273 = 44.Q mol
private static readonly float R = 8.314f;
private static readonly float ZeroCelsius = 273.15f;
@ -39,16 +33,6 @@ namespace Aerostats
[KSPField(isPersistant = false, guiActive = false)]
public float MaxBalloonVolume = 10000;
/// <summary>
/// Maximum initial reserve of compressed gas, in m^3 at stp
/// For helium, the volume needed to store this reserve is about 0.0014m^3 of compressed storage (liquid) for 1m^3 of gas at stp
/// </summary>
[KSPField(isPersistant = false, guiActive = false)]
public float CompressedGasStorage = 15000;
[KSPField(isPersistant = true, guiActive = true)]
public float RemainingCompressedGas = 15000;
/// <summary>
/// Weight, in kilograms, of 1m^3 of gas at 100kPa and 0°C
/// Helium is 179g/m^3
@ -112,35 +96,6 @@ namespace Aerostats
private GameObject Balloon;
private LineRenderer Spring;
private void PlayAnimation(string animationName, float animationSpeed)
{
foreach (Animation animation in part.FindModelAnimators(animationName))
{
AnimationState state = animation[animationName];
state.normalizedTime = 0;
state.normalizedSpeed = animationSpeed;
state.enabled = true;
animation.Play(animationName);
}
}
private bool IsAnimationPlaying(string animationName)
{
return part.FindModelAnimators(animationName).Any(a => a[animationName].enabled);
}
private void SetInflation(float ratio)
{
foreach (Animation animation in part.FindModelAnimators(InflateAnimation))
{
AnimationState state = animation[InflateAnimation];
state.normalizedTime = ratio;
state.normalizedSpeed = 0;
state.enabled = true;
animation.Play(InflateAnimation);
}
}
public override void OnStart(PartModule.StartState state)
{
if (!HighLogic.LoadedSceneIsEditor && !HighLogic.LoadedSceneIsFlight) { return; }
@ -153,7 +108,6 @@ namespace Aerostats
{
UnityEngine.Debug.Log("Aerostats: staged");
ScreenMessages.PostScreenMessage("staged");
//PlayAnimation(DeployAnimation, 1.0f);
Balloon = GameObject.CreatePrimitive(PrimitiveType.Sphere);
Balloon.transform.position = part.Rigidbody.position + part.Rigidbody.transform.up;
@ -162,8 +116,7 @@ namespace Aerostats
Balloon.rigidbody.angularDrag = 10.0f;
LiftingGasQuantity = Math.Min(MinimumFillQuantity, RemainingCompressedGas);
RemainingCompressedGas -= LiftingGasQuantity;
LiftingGasQuantity = part.RequestResource("Helium", MinimumFillQuantity);
Spring = Balloon.AddComponent<LineRenderer>();
Spring.useWorldSpace = true;
@ -193,96 +146,83 @@ namespace Aerostats
if (Staged)
{
//if (!IsAnimationPlaying(DeployAnimation))
float externalTemperature = (float)FlightGlobals.getExternalTemperature();
float balloonInternalTemperature = externalTemperature;
float externalPressure = Math.Max((float)FlightGlobals.getStaticPressure() * 1000.0f, 0.00001f);
Util.PostSingleScreenMessage("external atmo", "Temperature = " + externalTemperature + "K, Pressure=" + externalPressure + "Pa");
float currentMaxQuantity = MaxBalloonVolume / R / balloonInternalTemperature * externalPressure / StpVolumeToMoles;
LiftingGasTargetQuantity = Math.Max(MinimumFillQuantity, LiftingGasTargetQuantity);
if(LiftingGasTargetQuantity > LiftingGasQuantity)
{
// infalting balloon
float stepFinalQuantity = Math.Min(LiftingGasQuantity + MaxGasFillRate * Time.fixedDeltaTime, Math.Min(LiftingGasTargetQuantity, currentMaxQuantity));
float step = Math.Max(stepFinalQuantity - LiftingGasQuantity, 0.0f);
LiftingGasQuantity += part.RequestResource("Helium", step);
}
else
{
// deflating balloon
LiftingGasQuantity = Math.Max(LiftingGasQuantity - MaxGasVentRate * Time.fixedDeltaTime, LiftingGasTargetQuantity);
}
// balloon security valve
if (LiftingGasQuantity > currentMaxQuantity)
{
float externalTemperature = (float)FlightGlobals.getExternalTemperature();
float balloonInternalTemperature = externalTemperature;
float externalPressure = Math.Max((float)FlightGlobals.getStaticPressure() * 1000.0f, 0.00001f);
Util.PostSingleScreenMessage("external atmo", "Temperature = " + externalTemperature + "K, Pressure=" + externalPressure + "Pa");
float currentMaxQuantity = MaxBalloonVolume / R / balloonInternalTemperature * externalPressure / StpVolumeToMoles;
LiftingGasTargetQuantity = Math.Max(MinimumFillQuantity, LiftingGasTargetQuantity);
if(LiftingGasTargetQuantity > LiftingGasQuantity)
{
// infalting balloon
float stepFinalQuantity = Math.Min(LiftingGasQuantity + MaxGasFillRate * Time.fixedDeltaTime, Math.Min(LiftingGasTargetQuantity, currentMaxQuantity));
float step = Math.Max(stepFinalQuantity - LiftingGasQuantity, 0.0f);
LiftingGasQuantity += step;
RemainingCompressedGas -= step;
// gas exhausted
if(RemainingCompressedGas < 0)
{
Util.PostSingleScreenMessage("out of gas", "Lifting gas reserve exhausted");
LiftingGasQuantity += RemainingCompressedGas;
RemainingCompressedGas = 0;
}
}
else
{
// deflating balloon
LiftingGasQuantity = Math.Max(LiftingGasQuantity - MaxGasVentRate * Time.fixedDeltaTime, LiftingGasTargetQuantity);
}
// balloon security valve
if (LiftingGasQuantity > currentMaxQuantity)
{
Util.PostSingleScreenMessage("security valve", "Some gas has been vented by the balloon security valve");
LiftingGasQuantity = currentMaxQuantity;
}
float currentGasMoles = StpVolumeToMoles * LiftingGasQuantity;
float currentGasVolume = currentGasMoles * R * balloonInternalTemperature / externalPressure;
Inflation = currentGasVolume / MaxBalloonVolume;
Util.PostSingleScreenMessage("inflation", "Inflation = " + (Inflation * 100.0f).ToString("0.00") + "%");
//SetInflation(Inflation);
float airDensity = (float)FlightGlobals.getAtmDensity(externalPressure / 1000.0f, externalTemperature, vessel.mainBody);
float currentGasDensity = GasDensity * balloonInternalTemperature / ZeroCelsius / externalPressure * StandardPressure;
float balloonLift = currentGasVolume * airDensity;
float balloonGasMass = currentGasDensity * currentGasVolume;
Util.PostSingleScreenMessage("lift", "Air density = " + airDensity + "kg/m^3, Lift = " + (balloonLift - balloonGasMass) + "kg");
var gravityAccel = FlightGlobals.getGeeForceAtPosition(vessel.GetWorldPos3D());
//Util.PostSingleScreenMessage("gravity", "Gravity accel = (" + gravityAccel.x + ", " + gravityAccel.y + ", " + gravityAccel.z + ")");
Util.PostSingleScreenMessage("security valve", "Some gas has been vented by the balloon security valve");
LiftingGasQuantity = currentMaxQuantity;
}
float currentGasMoles = StpVolumeToMoles * LiftingGasQuantity;
float currentGasVolume = currentGasMoles * R * balloonInternalTemperature / externalPressure;
Inflation = currentGasVolume / MaxBalloonVolume;
Util.PostSingleScreenMessage("inflation", "Inflation = " + (Inflation * 100.0f).ToString("0.00") + "%");
float airDensity = (float)FlightGlobals.getAtmDensity(externalPressure / 1000.0f, externalTemperature, vessel.mainBody);
float currentGasDensity = GasDensity * balloonInternalTemperature / ZeroCelsius / externalPressure * StandardPressure;
float balloonLift = currentGasVolume * airDensity;
float balloonGasMass = currentGasDensity * currentGasVolume;
Util.PostSingleScreenMessage("lift", "Air density = " + airDensity + "kg/m^3, Lift = " + (balloonLift - balloonGasMass) + "kg");
var gravityAccel = FlightGlobals.getGeeForceAtPosition(vessel.GetWorldPos3D());
//Util.PostSingleScreenMessage("gravity", "Gravity accel = (" + gravityAccel.x + ", " + gravityAccel.y + ", " + gravityAccel.z + ")");
// V = 4/3*pi*r^3
float radius = Mathf.Pow(currentGasVolume * 0.75f / Mathf.PI, 0.333f);
float scale = radius * 2.0f + 0.1f;
Balloon.transform.localScale = new Vector3(scale,scale,scale);
Balloon.rigidbody.mass = (BalloonEmptyMass + balloonGasMass) * 0.001f;
Balloon.rigidbody.AddForce(-gravityAccel * balloonLift / 1000.0f, ForceMode.Force);
// balloon drag
var airVelocity = Balloon.rigidbody.velocity + Krakensbane.GetFrameVelocity() /*- vessel.mainBody.getRFrmVel(vessel.GetWorldPos3D())*/;
float sqVel = (float)airVelocity.magnitude;
sqVel *= sqVel;
float dragForce = 0.5f * airDensity * sqVel * BalloonDragCoeff * (Mathf.PI * radius * radius);
Util.PostSingleScreenMessage("balloon drag", "Drag = " + dragForce + "N");
Balloon.rigidbody.AddForce(-airVelocity.normalized * dragForce / 1000.0f, ForceMode.Force);
// spring between balloon and base
float restLength = SpringRestLength + radius;
var springVec = Balloon.rigidbody.position - part.rigidbody.position;
float springLength = springVec.magnitude;
float springForceMag = 0;
var balloonAttachPoint = Balloon.rigidbody.position - Balloon.transform.up.normalized * radius;
if(springLength > restLength)
{
float tensingLength = springLength - restLength;
springForceMag = tensingLength * SpringHardness;
var springForce = springVec * (springForceMag / springLength * 0.001f);
part.rigidbody.AddForce(springForce, ForceMode.Force);
Balloon.rigidbody.AddForceAtPosition(-springForce, balloonAttachPoint, ForceMode.Force);
}
Util.PostSingleScreenMessage("spring force", "Spring force = " + springForceMag + "N");
Spring.SetPosition(0, part.transform.position);
Spring.SetPosition(1, balloonAttachPoint);
// V = 4/3*pi*r^3
float radius = Mathf.Pow(currentGasVolume * 0.75f / Mathf.PI, 0.333f);
float scale = radius * 2.0f + 0.1f;
Balloon.transform.localScale = new Vector3(scale,scale,scale);
Balloon.rigidbody.mass = (BalloonEmptyMass + balloonGasMass) * 0.001f;
Balloon.rigidbody.AddForce(-gravityAccel * balloonLift / 1000.0f, ForceMode.Force);
// balloon drag
var airVelocity = Balloon.rigidbody.velocity + Krakensbane.GetFrameVelocity() /*- vessel.mainBody.getRFrmVel(vessel.GetWorldPos3D())*/;
float sqVel = (float)airVelocity.magnitude;
sqVel *= sqVel;
float dragForce = 0.5f * airDensity * sqVel * BalloonDragCoeff * (Mathf.PI * radius * radius);
Util.PostSingleScreenMessage("balloon drag", "Drag = " + dragForce + "N");
Balloon.rigidbody.AddForce(-airVelocity.normalized * dragForce / 1000.0f, ForceMode.Force);
// spring between balloon and base
float restLength = SpringRestLength + radius;
var springVec = Balloon.rigidbody.position - part.rigidbody.position;
float springLength = springVec.magnitude;
float springForceMag = 0;
var balloonAttachPoint = Balloon.rigidbody.position - Balloon.transform.up.normalized * radius;
if(springLength > restLength)
{
float tensingLength = springLength - restLength;
springForceMag = tensingLength * SpringHardness;
var springForce = springVec * (springForceMag / springLength * 0.001f);
part.rigidbody.AddForce(springForce, ForceMode.Force);
Balloon.rigidbody.AddForceAtPosition(-springForce, balloonAttachPoint, ForceMode.Force);
}
Util.PostSingleScreenMessage("spring force", "Spring force = " + springForceMag + "N");
Spring.SetPosition(0, part.transform.position);
Spring.SetPosition(1, balloonAttachPoint);
}
}
}

16
TweakScale.cfg
Unescape View File

@ -0,0 +1,16 @@
@PART[heliumTankRadial]
{
%MODULE[TweakScale]
{
type = free
}
}
@PART[balloon]
{
%MODULE[TweakScale]
{
type = stack
defaultScale = 1.25
}
}

10
resources.cfg
Unescape View File

@ -0,0 +1,10 @@
RESOURCE_DEFINITION
{
name = Helium
density = 0.000179 // storage unit is m^3 of Helium at standard pressure (100kPa, 0°C), which has a density of 0.179kg/m^3 (helium tanks store liquid helium which occupies less space, but still weights the same)
unitCost = 1.2
hsp = 3000
flowMode = STAGE_PRIORITY_FLOW
transfer = PUMP
isTweakable = true
}
Write Preview
Loading…
Cancel
Save