public void Dump()
{
StringBuilder str = new StringBuilder("", 512);
str.AppendFormat("number : {0:d}\n", number);
str.AppendFormat("cost : {0:g6}\n", cost);
str.AppendFormat("totalCost : {0:g6}\n", totalCost);
str.AppendFormat("time : {0:g6}\n", time);
str.AppendFormat("totalTime : {0:g6}\n", totalTime);
str.AppendFormat("mass : {0:g6}\n", mass);
str.AppendFormat("totalMass : {0:g6}\n", totalMass);
str.AppendFormat("isp : {0:g6}\n", isp);
str.AppendFormat("thrust : {0:g6}\n", thrust);
str.AppendFormat("actualThrust : {0:g6}\n", actualThrust);
str.AppendFormat("thrustToWeight: {0:g6}\n", thrustToWeight);
str.AppendFormat("maxTWR : {0:g6}\n", maxThrustToWeight);
str.AppendFormat("actualTWR : {0:g6}\n", actualThrustToWeight);
str.AppendFormat("deltaV : {0:g6}\n", deltaV);
str.AppendFormat("totalDeltaV : {0:g6}\n", totalDeltaV);
str.AppendFormat("invTotDeltaV : {0:g6}\n", inverseTotalDeltaV);
MonoBehaviour.print(str);
}
// This function runs the simulation and returns a newly created array of Stage objects
public Stage[] RunSimulation()
{
if (SimManager.logOutput)
{
MonoBehaviour.print("RunSimulation started");
}
_timer.Start();
LogMsg log = null;
if (SimManager.logOutput)
{
log = new LogMsg();
}
// 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;
foreach (EngineSim engine in allEngines)
{
if (log != null)
{
log.buf.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.buf.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.buf.AppendLine("Need to do current active engines first");
}
doingCurrent = true;
}
}
else
{
if (bStage)
{
if (log != null)
{
log.buf.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
List <List <PartSim> > dontStagePartsLists = BuildDontStageLists(log);
if (log != null)
{
log.Flush();
}
// Create the array of stages that will be returned
Stage[] stages = new Stage[currentStage + 1];
// Loop through the stages
while (currentStage >= 0)
{
if (log != null)
{
log.buf.AppendLine("Simulating stage " + currentStage);
log.buf.AppendLine("ShipMass = " + ShipMass);
log.Flush();
_timer.Reset();
_timer.Start();
}
// Update active engines and resource drains
UpdateResourceDrains();
// Create the Stage object for this stage
Stage stage = new Stage();
stageTime = 0d;
vecStageDeltaV = Vector3.zero;
stageStartMass = ShipMass;
stepStartMass = stageStartMass;
stepEndMass = 0;
CalculateThrustAndISP();
// Store various things in the Stage object
stage.thrust = totalStageThrust;
//MonoBehaviour.print("stage.thrust = " + stage.thrust);
stage.thrustToWeight = totalStageThrust / (stageStartMass * gravity);
stage.maxThrustToWeight = stage.thrustToWeight;
//MonoBehaviour.print("StageMass = " + stageStartMass);
//MonoBehaviour.print("Initial maxTWR = " + stage.maxThrustToWeight);
stage.actualThrust = totalStageActualThrust;
stage.actualThrustToWeight = totalStageActualThrust / (stageStartMass * gravity);
// Calculate the cost and mass of this stage and add all engines and tanks that are decoupled
// in the next stage to the dontStageParts list
foreach (PartSim partSim in allParts)
{
if (partSim.decoupledInStage == currentStage - 1)
{
stage.cost += partSim.cost;
stage.mass += partSim.GetStartMass();
}
}
dontStageParts = dontStagePartsLists[currentStage];
if (log != null)
{
log.buf.AppendLine("Stage setup took " + _timer.ElapsedMilliseconds + "ms");
if (dontStageParts.Count > 0)
{
log.buf.AppendLine("Parts preventing staging:");
foreach (PartSim partSim in dontStageParts)
{
partSim.DumpPartToBuffer(log.buf, "");
}
}
else
{
log.buf.AppendLine("No parts preventing staging");
}
log.Flush();
}
// Now we will loop until we are allowed to stage
int loopCounter = 0;
while (!AllowedToStage())
{
loopCounter++;
//MonoBehaviour.print("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();
if (time < resourceDrainTime)
{
resourceDrainTime = time;
partMinDrain = partSim;
}
}
if (log != null)
{
MonoBehaviour.print("Drain time = " + resourceDrainTime + " (" + partMinDrain.name + ":" + partMinDrain.partId + ")");
}
foreach (PartSim partSim in drainingParts)
{
partSim.DrainResources(resourceDrainTime);
}
// Get the mass after draining
stepEndMass = ShipMass;
stageTime += resourceDrainTime;
double stepEndTWR = totalStageThrust / (stepEndMass * gravity);
//MonoBehaviour.print("After drain mass = " + stepEndMass);
//MonoBehaviour.print("currentThrust = " + totalStageThrust);
//MonoBehaviour.print("currentTWR = " + stepEndTWR);
if (stepEndTWR > stage.maxThrustToWeight)
{
stage.maxThrustToWeight = stepEndTWR;
}
//MonoBehaviour.print("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 * STD_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)
{
MonoBehaviour.print("exceeded loop count");
MonoBehaviour.print("stageStartMass = " + stageStartMass);
MonoBehaviour.print("stepStartMass = " + stepStartMass);
MonoBehaviour.print("StepEndMass = " + stepEndMass);
break;
}
// The next step starts at the mass this one ended at
stepStartMass = stepEndMass;
}
// Store more values in the Stage object and stick it in the array
// Store the magnitude of the deltaV vector
stage.deltaV = vecStageDeltaV.magnitude;
// 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 / (STD_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
stages[currentStage] = stage;
// Now activate the next stage
currentStage--;
doingCurrent = false;
if (log != null)
{
// Log how long the stage took
_timer.Stop();
MonoBehaviour.print("Simulating stage took " + _timer.ElapsedMilliseconds + "ms");
stage.Dump();
_timer.Reset();
_timer.Start();
}
// Activate the next stage
ActivateStage();
if (log != null)
{
// Log how long it took to activate
_timer.Stop();
MonoBehaviour.print("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].totalCost += stages[j].cost;
stages[i].totalMass += stages[j].mass;
stages[i].totalDeltaV += stages[j].deltaV;
stages[i].totalTime += stages[j].time;
}
// 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;
}
}
if (log != null)
{
_timer.Stop();
MonoBehaviour.print("RunSimulation: " + _timer.ElapsedMilliseconds + "ms");
}
return(stages);
}