private void CalculateFullThrustAndISP()
{
fullSimpleThrust = 0;
fullVecThrust = Vector3.zero;
fullStageFlowRate = 0d;
fullStageIspFlowRate = 0d;
fullISP = 0;
for (int i = 0; i < stageEngines.Count; i++)
{
EngineSim engine = stageEngines[i];
fullSimpleThrust += engine.fullThrust;
fullVecThrust += ((float)engine.fullThrust * engine.thrustVec);
fullStageFlowRate += engine.MaxResourceConsumptions.Mass;
fullStageIspFlowRate += engine.MaxResourceConsumptions.Mass * engine.isp;
}
if (fullStageFlowRate > 0 && fullStageIspFlowRate > 0)
{
fullISP = fullStageIspFlowRate / fullStageFlowRate;
}
else
{
fullISP = 0;
}
}
private void CalculateThrustAndISP()
{
// Reset all the values
vecThrust = Vector3.zero;
vecActualThrust = Vector3.zero;
totalVectoredExhaustVelocity = Vector3.zero;
totalActualVectoredExhaustVelocity = Vector3.zero;
totalExhaustVelocity = 0;
totalActualExhaustVelocity = 0;
simpleTotalThrust = 0d;
simpleActualTotalThrust = 0d;
totalStageThrust = 0d;
totalStageActualThrust = 0d;
totalStageFlowRate = 0d;
totalStageIspFlowRate = 0d;
totalStageThrustForce.Reset();
// Loop through all the active engines totalling the thrust, actual thrust and mass flow rates
// The thrust is totalled as vectors
for (int i = 0; i < activeEngines.Count; ++i)
{
EngineSim engine = activeEngines[i];
simpleTotalThrust += engine.thrust;
simpleActualTotalThrust += engine.actualThrust;
vecThrust += ((float)engine.thrust * engine.thrustVec);
vecActualThrust += ((float)engine.actualThrust * engine.thrustVec);
totalVectoredExhaustVelocity += engine.thrustVec * (float)((engine.isp * BasicDeltaV.GRAVITY) / engine.thrust);
totalExhaustVelocity += totalVectoredExhaustVelocity.magnitude;
totalActualVectoredExhaustVelocity += engine.thrustVec * (float)((engine.isp * BasicDeltaV.GRAVITY) / engine.actualThrust);
totalActualExhaustVelocity += totalActualVectoredExhaustVelocity.magnitude;
totalStageFlowRate += engine.ResourceConsumptions.Mass;
totalStageIspFlowRate += engine.ResourceConsumptions.Mass * engine.isp;
for (int j = 0; j < engine.appliedForces.Count; ++j)
{
totalStageThrustForce.AddForce(engine.appliedForces[j]);
}
}
if (log != null)
{
log.AppendLine("vecThrust = ", vecThrust.ToString(), " magnitude = ", vecThrust.magnitude);
}
totalStageThrust = vecThrust.magnitude;
totalStageActualThrust = vecActualThrust.magnitude;
// Calculate the effective isp at this point
if (totalStageFlowRate > 0d && totalStageIspFlowRate > 0d)
{
currentisp = totalStageIspFlowRate / totalStageFlowRate;
}
else
{
currentisp = 0;
}
}
// This function activates the next stage
// currentStage must be updated before calling this function
private void ActivateStage()
{
// Build a set of all the parts that will be decoupled
decoupledParts.Clear();
for (int i = 0; i < allParts.Count; ++i)
{
PartSim partSim = allParts[i];
if (partSim.decoupledInStage >= currentStage)
{
decoupledParts.Add(partSim);
}
}
foreach (PartSim partSim in decoupledParts)
{
// Remove it from the all parts list
allParts.Remove(partSim);
partSim.Release();
if (partSim.isEngine)
{
// If it is an engine then loop through all the engine modules and remove all the ones from this engine part
for (int i = allEngines.Count - 1; i >= 0; i--)
{
EngineSim engine = allEngines[i];
if (engine.partSim == partSim)
{
allEngines.RemoveAt(i);
engine.Release();
}
}
}
// If it is a fuel line then remove it from the list of all fuel lines
if (partSim.isFuelLine)
{
allFuelLines.Remove(partSim);
}
}
// Loop through all the (remaining) parts
for (int i = 0; i < allParts.Count; ++i)
{
// Ask the part to remove all the parts that are decoupled
allParts[i].RemoveAttachedParts(decoupledParts);
}
// Now we loop through all the engines and activate those that are ignited in this stage
for (int i = 0; i < allEngines.Count; ++i)
{
EngineSim engine = allEngines[i];
if (engine.partSim.inverseStage == currentStage)
{
engine.isActive = true;
}
}
}
private void UpdateStageEngines()
{
stageEngines.Clear();
for (int i = 0; i < allEngines.Count; i++)
{
EngineSim engine = allEngines[i];
if (engine.partSim.inverseStage >= currentStage)
{
stageEngines.Add(engine);
}
}
}
// This function simply rebuilds the active engines by testing the isActive flag of all the engines
private void UpdateActiveEngines()
{
activeEngines.Clear();
for (int i = 0; i < allEngines.Count; ++i)
{
EngineSim engine = allEngines[i];
if (engine.isActive && engine.isFlamedOut == false)
{
activeEngines.Add(engine);
}
}
}
// This function does all the hard work of working out which engines are burning, which tanks are being drained
// and setting the drain rates
private void UpdateResourceDrains()
{
// Update the active engines
UpdateActiveEngines();
// Empty the draining resources set
drainingResources.Clear();
// Reset the resource drains of all draining parts
foreach (PartSim partSim in drainingParts)
{
partSim.resourceDrains.Reset();
}
// Empty the draining parts set
drainingParts.Clear();
// Loop through all the active engine modules
for (int i = 0; i < activeEngines.Count; ++i)
{
EngineSim engine = activeEngines[i];
// Set the resource drains for this engine
if (engine.SetResourceDrains(log, allParts, allFuelLines, drainingParts))
{
// If it is active then add the consumed resource types to the set
for (int j = 0; j < engine.ResourceConsumptions.Types.Count; ++j)
{
drainingResources.Add(engine.ResourceConsumptions.Types[j]);
}
}
}
// Update the active engines again to remove any engines that have no fuel supply
UpdateActiveEngines();
if (log != null)
{
log.AppendLine("Active engines = ", activeEngines.Count);
int i = 0;
for (int j = 0; j < activeEngines.Count; j++)
{
EngineSim engine = activeEngines[j];
log.Append("Engine " + (i++) + ":");
engine.DumpEngineToLog(log);
}
log.Flush();
}
}
private static void Reset(EngineSim engineSim)
{
engineSim.resourceConsumptions.Reset();
engineSim.maxResourceConsumptions.Reset();
engineSim.resourceFlowModes.Reset();
engineSim.partSim = null;
engineSim.actualThrust = 0;
engineSim.isActive = false;
engineSim.isp = 0;
for (int i = 0; i < engineSim.appliedForces.Count; i++)
{
engineSim.appliedForces[i].Release();
}
engineSim.appliedForces.Clear();
engineSim.thrust = 0;
engineSim.fullThrust = 0;
engineSim.maxMach = 0f;
engineSim.isFlamedOut = false;
}
private void UpdateStageResourceSources()
{
UpdateStageEngines();
maxResourceParts.Clear();
maxResources.Clear();
for (int i = 0; i < stageEngines.Count; i++)
{
EngineSim engine = stageEngines[i];
if (engine.SetPossibleResourceDrains(log, allParts, maxResourceParts))
{
for (int j = 0; j < engine.ResourceConsumptions.Types.Count; j++)
{
maxResources.Add(engine.ResourceConsumptions.Types[j]);
}
}
}
}
public void CreateEngineSims(List <EngineSim> allEngines, double atmosphere, double mach, bool vectoredThrust, bool fullThrust, LogMsg log)
{
if (log != null)
{
log.AppendLine("CreateEngineSims for ", this.name);
}
List <ModuleEngines> cacheModuleEngines = part.FindModulesImplementing <ModuleEngines>();
try
{
if (cacheModuleEngines.Count > 0)
{
//find first active engine, assuming that two are never active at the same time
foreach (ModuleEngines engine in cacheModuleEngines)
{
if (engine.isEnabled)
{
if (log != null)
{
log.AppendLine("Module: ", engine.moduleName);
}
EngineSim engineSim = EngineSim.New(
this,
engine,
atmosphere,
(float)mach,
vectoredThrust,
fullThrust,
log);
allEngines.Add(engineSim);
}
}
}
}
catch
{
Debug.Log("[KER] Error Catch in CreateEngineSims");
}
}
public static EngineSim New(PartSim theEngine,
ModuleEngines engineMod,
double atmosphere,
float machNumber,
bool vectoredThrust,
bool fullThrust,
LogMsg log)
{
float maxFuelFlow = engineMod.maxFuelFlow;
float minFuelFlow = engineMod.minFuelFlow;
float thrustPercentage = engineMod.thrustPercentage;
List <Transform> thrustTransforms = engineMod.thrustTransforms;
List <float> thrustTransformMultipliers = engineMod.thrustTransformMultipliers;
Vector3 vecThrust = CalculateThrustVector(vectoredThrust ? thrustTransforms : null,
vectoredThrust ? thrustTransformMultipliers : null,
log);
FloatCurve atmosphereCurve = engineMod.atmosphereCurve;
bool atmChangeFlow = engineMod.atmChangeFlow;
FloatCurve atmCurve = engineMod.useAtmCurve ? engineMod.atmCurve : null;
FloatCurve velCurve = engineMod.useVelCurve ? engineMod.velCurve : null;
float currentThrottle = engineMod.currentThrottle;
float IspG = engineMod.g;
bool throttleLocked = engineMod.throttleLocked || fullThrust;
List <Propellant> propellants = engineMod.propellants;
bool active = engineMod.isOperational;
float resultingThrust = engineMod.resultingThrust;
bool isFlamedOut = engineMod.flameout;
EngineSim engineSim = pool.Borrow();
engineSim.isp = 0.0;
engineSim.maxMach = 0.0f;
engineSim.actualThrust = 0.0;
engineSim.partSim = theEngine;
engineSim.isActive = active;
engineSim.thrustVec = vecThrust;
engineSim.isFlamedOut = isFlamedOut;
engineSim.resourceConsumptions.Reset();
engineSim.maxResourceConsumptions.Reset();
engineSim.resourceFlowModes.Reset();
engineSim.appliedForces.Clear();
double flowRate = 0.0;
double maxFlowRate = 0.0;
if (engineSim.partSim.hasVessel)
{
if (log != null)
{
log.AppendLine("hasVessel is true");
}
float flowModifier = GetFlowModifier(atmChangeFlow, atmCurve, engineSim.partSim.part.atmDensity, velCurve, machNumber, ref engineSim.maxMach);
engineSim.isp = atmosphereCurve.Evaluate((float)atmosphere);
engineSim.fullThrust = GetThrust(maxFuelFlow * flowModifier, engineSim.isp);
engineSim.thrust = GetThrust(Mathf.Lerp(minFuelFlow, maxFuelFlow, GetThrustPercent(thrustPercentage)) * flowModifier, engineSim.isp);
engineSim.actualThrust = engineSim.isActive ? resultingThrust : 0.0;
if (log != null)
{
log.buf.AppendFormat("flowMod = {0:g6}\n", flowModifier);
log.buf.AppendFormat("isp = {0:g6}\n", engineSim.isp);
log.buf.AppendFormat("thrust = {0:g6}\n", engineSim.thrust);
log.buf.AppendFormat("actual = {0:g6}\n", engineSim.actualThrust);
}
if (throttleLocked)
{
if (log != null)
{
log.AppendLine("throttleLocked is true, using thrust for flowRate");
}
flowRate = GetFlowRate(engineSim.thrust, engineSim.isp);
}
else
{
if (currentThrottle > 0.0f && engineSim.partSim.isLanded == false)
{
// TODO: This bit doesn't work for RF engines
if (log != null)
{
log.AppendLine("throttled up and not landed, using actualThrust for flowRate");
}
flowRate = GetFlowRate(engineSim.actualThrust, engineSim.isp);
}
else
{
if (log != null)
{
log.AppendLine("throttled down or landed, using thrust for flowRate");
}
flowRate = GetFlowRate(engineSim.thrust, engineSim.isp);
}
}
maxFlowRate = GetFlowRate(engineSim.fullThrust, engineSim.isp);
}
else
{
if (log != null)
{
log.buf.AppendLine("hasVessel is false");
}
float altitude = BasicDeltaV.Instance.AtmosphereDepth;
float flowModifier = GetFlowModifier(atmChangeFlow, atmCurve, BasicDeltaV.Instance.CurrentCelestialBody.GetDensity(BasicDeltaV.Instance.CurrentCelestialBody.GetPressure(altitude), BasicDeltaV.Instance.CurrentCelestialBody.GetTemperature(altitude)), velCurve, machNumber, ref engineSim.maxMach);
engineSim.isp = atmosphereCurve.Evaluate((float)atmosphere);
engineSim.fullThrust = GetThrust(maxFuelFlow * flowModifier, engineSim.isp);
engineSim.thrust = GetThrust(Mathf.Lerp(minFuelFlow, maxFuelFlow, GetThrustPercent(thrustPercentage)) * flowModifier, engineSim.isp);
engineSim.actualThrust = 0d;
if (log != null)
{
log.buf.AppendFormat("flowMod = {0:g6}\n", flowModifier);
log.buf.AppendFormat("isp = {0:g6}\n", engineSim.isp);
log.buf.AppendFormat("thrust = {0:g6}\n", engineSim.thrust);
log.buf.AppendFormat("actual = {0:g6}\n", engineSim.actualThrust);
log.AppendLine("no vessel, using thrust for flowRate");
}
flowRate = GetFlowRate(engineSim.thrust, engineSim.isp);
maxFlowRate = GetFlowRate(engineSim.fullThrust, engineSim.isp);
}
if (log != null)
{
log.buf.AppendFormat("flowRate = {0:g6}\n", flowRate);
}
float flowMass = 0f;
for (int i = 0; i < propellants.Count; ++i)
{
Propellant propellant = propellants[i];
if (!propellant.ignoreForIsp)
{
flowMass += propellant.ratio * ResourceContainer.GetResourceDensity(propellant.id);
}
}
if (log != null)
{
log.buf.AppendFormat("flowMass = {0:g6}\n", flowMass);
}
for (int i = 0; i < propellants.Count; ++i)
{
Propellant propellant = propellants[i];
if (propellant.name == "ElectricCharge" || propellant.name == "IntakeAir")
{
continue;
}
double consumptionRate = propellant.ratio * flowRate / flowMass;
if (log != null)
{
log.buf.AppendFormat(
"Add consumption({0}, {1}:{2:d}) = {3:g6}\n",
ResourceContainer.GetResourceName(propellant.id),
theEngine.name,
theEngine.partId,
consumptionRate);
}
engineSim.resourceConsumptions.Add(propellant.id, consumptionRate);
engineSim.resourceFlowModes.Add(propellant.id, (double)propellant.GetFlowMode());
double maxConsumptionRate = propellant.ratio * maxFlowRate / flowMass;
engineSim.maxResourceConsumptions.Add(propellant.id, maxConsumptionRate);
}
for (int i = 0; i < thrustTransforms.Count; i++)
{
Transform thrustTransform = thrustTransforms[i];
Vector3d direction = thrustTransform.forward.normalized;
Vector3d position = thrustTransform.position;
AppliedForce appliedForce = AppliedForce.New(direction * engineSim.thrust * thrustTransformMultipliers[i], position);
engineSim.appliedForces.Add(appliedForce);
}
return(engineSim);
}
// This function runs the simulation and returns a newly created array of Stage objects
public Stage[] RunSimulation(LogMsg _log)
{
log = _log;
if (log != null)
{
log.AppendLine("RunSimulation started");
}
_timer.Reset();
_timer.Start();
// Start with the last stage to simulate
// (this is in a member variable so it can be accessed by AllowedToStage and ActivateStage)
currentStage = lastStage;
// Work out which engines would be active if just doing the staging and if this is different to the
// currently active engines then generate an extra stage
// Loop through all the engines
bool anyActive = false;
for (int i = 0; i < allEngines.Count; ++i)
{
EngineSim engine = allEngines[i];
if (log != null)
{
log.AppendLine("Testing engine mod of ", engine.partSim.name, ":", engine.partSim.partId);
}
bool bActive = engine.isActive;
bool bStage = (engine.partSim.inverseStage >= currentStage);
if (log != null)
{
log.AppendLine("bActive = ", bActive, " bStage = ", bStage);
}
if (HighLogic.LoadedSceneIsFlight)
{
if (bActive)
{
anyActive = true;
}
if (bActive != bStage)
{
// If the active state is different to the state due to staging
if (log != null)
{
log.AppendLine("Need to do current active engines first");
}
doingCurrent = true;
}
}
else
{
if (bStage)
{
if (log != null)
{
log.AppendLine("Marking as active");
}
engine.isActive = true;
}
}
}
// If we need to do current because of difference in engine activation and there actually are active engines
// then we do the extra stage otherwise activate the next stage and don't treat it as current
if (doingCurrent && anyActive)
{
currentStage++;
}
else
{
ActivateStage();
doingCurrent = false;
}
// Create a list of lists of PartSims that prevent decoupling
BuildDontStageLists(log);
if (log != null)
{
log.Flush();
}
// Create the array of stages that will be returned
Stage[] stages = new Stage[currentStage + 1];
int startStage = currentStage;
// Loop through the stages
while (currentStage >= 0)
{
if (log != null)
{
log.AppendLine("Simulating stage ", currentStage);
log.Flush();
_timer.Reset();
_timer.Start();
}
// Update active engines and resource drains
UpdateResourceDrains();
UpdateStageResourceSources();
// Update the masses of the parts to correctly handle "no physics" parts
stageStartMass = UpdatePartMasses();
stageFullMass = UpdateFullResourceMass();
if (log != null)
{
allParts[0].DumpPartToLog(log, "", allParts);
}
// Create the Stage object for this stage
Stage stage = new Stage();
stageTime = 0d;
vecStageDeltaV = Vector3.zero;
stageStartCom = ShipCom;
stepStartMass = stageStartMass;
stepEndMass = 0;
CalculateThrustAndISP();
CalculateFullThrustAndISP();
stage.startMass = stageStartMass;
stage.stageFullMass = stageFullMass;
// Store various things in the Stage object
stage.simpleThrust = simpleTotalThrust;
stage.actualSimpleThrust = simpleActualTotalThrust;
stage.thrust = totalStageThrust;
stage.thrustToWeight = totalStageThrust / (stageStartMass * gravity);
stage.maxThrustToWeight = stage.thrustToWeight;
stage.actualThrust = totalStageActualThrust;
stage.actualThrustToWeight = totalStageActualThrust / (stageStartMass * gravity);
stage.thrustVector = vecThrust;
stage.actualThrustVector = vecActualThrust;
stage.totalExhaustVelocity = totalExhaustVelocity;
stage.totalActualExhaustVelocity = totalActualExhaustVelocity;
stage.totalVectoredExhaustVelocity = totalVectoredExhaustVelocity;
stage.totalVectoredActualExhaustVelocity = totalActualVectoredExhaustVelocity;
if (log != null)
{
log.AppendLine("stage.thrust = ", stage.thrust);
log.AppendLine("StageMass = ", stageStartMass);
log.AppendLine("Initial maxTWR = ", stage.maxThrustToWeight);
}
// calculate torque and associates
stage.maxThrustTorque = totalStageThrustForce.TorqueAt(stageStartCom).magnitude;
// torque divided by thrust. imagine that all engines are at the end of a lever that tries to turn the ship.
// this numerical value, in meters, would represent the length of that lever.
double torqueLeverArmLength = (stage.thrust <= 0) ? 0 : stage.maxThrustTorque / stage.thrust;
// how far away are the engines from the CoM, actually?
double thrustDistance = (stageStartCom - totalStageThrustForce.GetAverageForceApplicationPoint()).magnitude;
// the combination of the above two values gives an approximation of the offset angle.
double sinThrustOffsetAngle = 0;
if (thrustDistance > 1e-7)
{
sinThrustOffsetAngle = torqueLeverArmLength / thrustDistance;
if (sinThrustOffsetAngle > 1)
{
sinThrustOffsetAngle = 1;
}
}
stage.thrustOffsetAngle = Math.Asin(sinThrustOffsetAngle) * 180 / Math.PI;
// Calculate the total cost of the vessel at this point
stage.totalCost = 0d;
for (int i = 0; i < allParts.Count; ++i)
{
if (currentStage > allParts[i].decoupledInStage)
{
stage.totalCost += allParts[i].GetCost(currentStage);
}
}
// The total mass is simply the mass at the start of the stage
stage.totalMass = stageStartMass;
// If we have done a previous stage
if (currentStage < startStage)
{
// Calculate what the previous stage's mass and cost were by subtraction
Stage prev = stages[currentStage + 1];
prev.cost = prev.totalCost - stage.totalCost;
prev.mass = prev.totalMass - stage.totalMass;
}
// The above code will never run for the last stage so set those directly
if (currentStage == 0)
{
stage.cost = stage.totalCost;
stage.mass = stage.totalMass;
}
dontStageParts = dontStagePartsLists[currentStage];
if (log != null)
{
log.AppendLine("Stage setup took ", _timer.ElapsedMilliseconds, "ms");
if (dontStageParts.Count > 0)
{
log.AppendLine("Parts preventing staging:");
for (int i = 0; i < dontStageParts.Count; i++)
{
PartSim partSim = dontStageParts[i];
partSim.DumpPartToLog(log, "");
}
}
else
{
log.AppendLine("No parts preventing staging");
}
log.Flush();
}
// Now we will loop until we are allowed to stage
int loopCounter = 0;
while (!AllowedToStage())
{
loopCounter++;
//if (log != null) log.AppendLine("loop = ", loopCounter);
// Calculate how long each draining tank will take to drain and run for the minimum time
double resourceDrainTime = double.MaxValue;
PartSim partMinDrain = null;
foreach (PartSim partSim in drainingParts)
{
double time = partSim.TimeToDrainResource(log);
if (time < resourceDrainTime)
{
resourceDrainTime = time;
partMinDrain = partSim;
}
}
if (log != null)
{
log.Append("Drain time = ", resourceDrainTime, " (", partMinDrain.name)
.AppendLine(":", partMinDrain.partId, ")");
}
foreach (PartSim partSim in drainingParts)
{
partSim.DrainResources(resourceDrainTime, log);
}
// Get the mass after draining
stepEndMass = ShipMass;
stageTime += resourceDrainTime;
stage.endMass = stepEndMass;
double stepEndTWR = totalStageThrust / (stepEndMass * gravity);
/*if (log != null)
* {
* log.AppendLine("After drain mass = ", stepEndMass);
* log.AppendLine("currentThrust = ", totalStageThrust);
* log.AppendLine("currentTWR = ", stepEndTWR);
* }*/
if (stepEndTWR > stage.maxThrustToWeight)
{
stage.maxThrustToWeight = stepEndTWR;
}
//if (log != null) log.AppendLine("newMaxTWR = ", stage.maxThrustToWeight);
// If we have drained anything and the masses make sense then add this step's deltaV to the stage total
if (resourceDrainTime > 0d && stepStartMass > stepEndMass && stepStartMass > 0d && stepEndMass > 0d)
{
vecStageDeltaV += vecThrust * (float)((currentisp * GRAVITY * Math.Log(stepStartMass / stepEndMass)) / simpleTotalThrust);
}
// Update the active engines and resource drains for the next step
UpdateResourceDrains();
// Recalculate the current thrust and isp for the next step
CalculateThrustAndISP();
// Check if we actually changed anything
if (stepStartMass == stepEndMass)
{
//MonoBehaviour.print("No change in mass");
break;
}
// Check to stop rampant looping
if (loopCounter == 1000)
{
if (log != null)
{
log.AppendLine("exceeded loop count");
log.AppendLine("stageStartMass = " + stageStartMass);
log.AppendLine("stepStartMass = " + stepStartMass);
log.AppendLine("StepEndMass = " + stepEndMass);
}
break;
}
// The next step starts at the mass this one ended at
stepStartMass = stepEndMass;
}
if (stage.stageFullMass > stage.endMass && stage.stageFullMass > 0d && stage.endMass > 0d)
{
stage.stageStartDeltaV = (fullVecThrust * (float)((fullISP * GRAVITY * Math.Log(stage.stageFullMass / stage.endMass)) / fullSimpleThrust)).magnitude;
}
// Store more values in the Stage object and stick it in the array
// Store the magnitude of the deltaV vector
stage.deltaV = vecStageDeltaV.magnitude;
stage.resourceMass = stageStartMass - stepEndMass;
// Recalculate effective stage isp from the stage deltaV (flip the standard deltaV calculation around)
// Note: If the mass doesn't change then this is a divide by zero
if (stageStartMass != stepStartMass)
{
stage.isp = stage.deltaV / (GRAVITY * Math.Log(stageStartMass / stepStartMass));
}
else
{
stage.isp = 0;
}
// Zero stage time if more than a day (this should be moved into the window code)
stage.time = (stageTime < SECONDS_PER_DAY) ? stageTime : 0d;
stage.number = doingCurrent ? -1 : currentStage; // Set the stage number to -1 if doing current engines
stage.totalPartCount = allParts.Count;
stage.maxMach = maxMach;
stages[currentStage] = stage;
// Now activate the next stage
currentStage--;
doingCurrent = false;
if (log != null)
{
// Log how long the stage took
_timer.Stop();
log.AppendLine("Simulating stage took ", _timer.ElapsedMilliseconds, "ms");
stage.Dump(log);
_timer.Reset();
_timer.Start();
}
// Activate the next stage
ActivateStage();
if (log != null)
{
// Log how long it took to activate
_timer.Stop();
log.AppendLine("ActivateStage took ", _timer.ElapsedMilliseconds, "ms");
}
}
// Now we add up the various total fields in the stages
for (int i = 0; i < stages.Length; i++)
{
// For each stage we total up the cost, mass, deltaV and time for this stage and all the stages above
for (int j = i; j >= 0; j--)
{
stages[i].totalStartDeltaV += stages[j].stageStartDeltaV;
stages[i].totalDeltaV += stages[j].deltaV;
stages[i].totalTime += stages[j].time;
stages[i].partCount = i > 0 ? stages[i].totalPartCount - stages[i - 1].totalPartCount : stages[i].totalPartCount;
}
// We also total up the deltaV for stage and all stages below
for (int j = i; j < stages.Length; j++)
{
stages[i].inverseTotalDeltaV += stages[j].deltaV;
}
// Zero the total time if the value will be huge (24 hours?) to avoid the display going weird
// (this should be moved into the window code)
if (stages[i].totalTime > SECONDS_PER_DAY)
{
stages[i].totalTime = 0d;
}
}
FreePooledObject();
_timer.Stop();
if (log != null)
{
log.AppendLine("RunSimulation: ", _timer.ElapsedMilliseconds, "ms");
log.Flush();
}
log = null;
return(stages);
}
// This function works out if it is time to stage
private bool AllowedToStage()
{
if (log != null)
{
log.AppendLine("AllowedToStage")
.AppendLine("currentStage = ", currentStage);
}
if (activeEngines.Count > 0)
{
for (int i = 0; i < dontStageParts.Count; ++i)
{
PartSim partSim = dontStageParts[i];
if (log != null)
{
partSim.DumpPartToLog(log, "Testing: ");
}
//if (log != null) log.AppendLine("isSepratron = ", partSim.isSepratron ? "true" : "false");
if (!partSim.isSepratron && !partSim.EmptyOf(drainingResources))
{
if (log != null)
{
partSim.DumpPartToLog(log, "Decoupled part not empty => false: ");
}
return(false);
}
if (partSim.isEngine)
{
for (int j = 0; j < activeEngines.Count; ++j)
{
EngineSim engine = activeEngines[j];
if (engine.dontDecoupleActive && engine.partSim == partSim)
{
if (log != null)
{
partSim.DumpPartToLog(log, "Decoupled part is active engine => false: ");
}
return(false);
}
}
}
}
}
if (currentStage == 0 && doingCurrent)
{
if (log != null)
{
log.AppendLine("Current stage == 0 && doingCurrent => false");
}
return(false);
}
if (log != null)
{
log.AppendLine("Returning true");
}
return(true);
}
