Example #1
0
        // This is the old recursive function for STACK_PRIORITY_SEARCH
        public void GetSourceSet_Old(int type, bool includeSurfaceMountedParts, List <PartSim> allParts, HashSet <PartSim> visited, HashSet <PartSim> allSources, LogMsg log, String indent)
        {
            if (log != null)
            {
                log.Append(indent, "GetSourceSet_Old(", ResourceContainer.GetResourceName(type), ") for ")
                .AppendLine(name, ":", partId);
                indent += "  ";
            }

            // Rule 1: Each part can be only visited once, If it is visited for second time in particular search it returns as is.
            if (visited.Contains(this))
            {
                if (log != null)
                {
                    log.Append(indent, "Returning empty set, already visited (", name, ":")
                    .AppendLine(partId + ")");
                }
                return;
            }

            if (log != null)
            {
                log.AppendLine(indent, "Adding this to visited");
            }

            visited.Add(this);

            // Rule 2: Part performs scan on start of every fuel pipe ending in it. This scan is done in order in which pipes were installed.
            // Then it makes an union of fuel tank sets each pipe scan returned. If the resulting list is not empty, it is returned as result.
            //MonoBehaviour.print("for each fuel line");

            int lastCount = allSources.Count;

            for (int i = 0; i < this.fuelTargets.Count; i++)
            {
                PartSim partSim = this.fuelTargets[i];
                if (partSim != null)
                {
                    if (visited.Contains(partSim))
                    {
                        if (log != null)
                        {
                            log.Append(indent, "Fuel target already visited, skipping (", partSim.name, ":")
                            .AppendLine(partSim.partId, ")");
                        }
                    }
                    else
                    {
                        if (log != null)
                        {
                            log.Append(indent, "Adding fuel target as source (", partSim.name, ":")
                            .AppendLine(partSim.partId, ")");
                        }

                        partSim.GetSourceSet_Old(type, includeSurfaceMountedParts, allParts, visited, allSources, log, indent);
                    }
                }
            }

            // check surface mounted fuel targets
            if (includeSurfaceMountedParts)
            {
                for (int i = 0; i < surfaceMountFuelTargets.Count; i++)
                {
                    PartSim partSim = this.surfaceMountFuelTargets[i];
                    if (partSim != null)
                    {
                        if (visited.Contains(partSim))
                        {
                            if (log != null)
                            {
                                log.Append(indent, "Fuel target already visited, skipping (", partSim.name, ":")
                                .AppendLine(partSim.partId, ")");
                            }
                        }
                        else
                        {
                            if (log != null)
                            {
                                log.Append(indent, "Adding fuel target as source (", partSim.name, ":")
                                .AppendLine(partSim.partId, ")");
                            }

                            partSim.GetSourceSet_Old(type, true, allParts, visited, allSources, log, indent);
                        }
                    }
                }
            }

            if (allSources.Count > lastCount)
            {
                if (log != null)
                {
                    log.Append(indent, "Returning ", (allSources.Count - lastCount), " fuel target sources (")
                    .AppendLine(this.name, ":", this.partId, ")");
                }
                return;
            }


            // Rule 3: This rule has been removed and merged with rules 4 and 7 to fix issue with fuel tanks with disabled crossfeed

            // Rule 4: Part performs scan on each of its axially mounted neighbors.
            //  Couplers (bicoupler, tricoupler, ...) are an exception, they only scan one attach point on the single attachment side,
            //  skip the points on the side where multiple points are. [Experiment]
            //  Again, the part creates union of scan lists from each of its neighbor and if it is not empty, returns this list.
            //  The order in which mount points of a part are scanned appears to be fixed and defined by the part specification file. [Experiment]
            if (fuelCrossFeed)
            {
                lastCount = allSources.Count;
                //MonoBehaviour.print("for each attach node");
                for (int i = 0; i < this.attachNodes.Count; i++)
                {
                    AttachNodeSim attachSim = this.attachNodes[i];
                    if (attachSim.attachedPartSim != null)
                    {
                        if (attachSim.nodeType == AttachNode.NodeType.Stack)
                        {
                            if ((string.IsNullOrEmpty(noCrossFeedNodeKey) == false && attachSim.id.Contains(noCrossFeedNodeKey)) == false)
                            {
                                if (visited.Contains(attachSim.attachedPartSim))
                                {
                                    if (log != null)
                                    {
                                        log.Append(indent, "Attached part already visited, skipping (", attachSim.attachedPartSim.name, ":")
                                        .AppendLine(attachSim.attachedPartSim.partId, ")");
                                    }
                                }
                                else
                                {
                                    if (log != null)
                                    {
                                        log.Append(indent, "Adding attached part as source  (", attachSim.attachedPartSim.name, ":")
                                        .AppendLine(attachSim.attachedPartSim.partId, ")");
                                    }

                                    attachSim.attachedPartSim.GetSourceSet_Old(type, includeSurfaceMountedParts, allParts, visited, allSources, log, indent);
                                }
                            }
                        }
                    }
                }

                if (allSources.Count > lastCount)
                {
                    if (log != null)
                    {
                        log.Append(indent, "Returning " + (allSources.Count - lastCount) + " attached sources (")
                        .AppendLine(this.name, ":", this.partId, ")");
                    }
                    return;
                }
            }

            // Rule 5: If the part is fuel container for searched type of fuel (i.e. it has capability to contain that type of fuel and the fuel
            // type was not disabled [Experiment]) and it contains fuel, it returns itself.
            // Rule 6: If the part is fuel container for searched type of fuel (i.e. it has capability to contain that type of fuel and the fuel
            // type was not disabled) but it does not contain the requested fuel, it returns empty list. [Experiment]
            if (resources.HasType(type) && resourceFlowStates[type] > 0.0)
            {
                if (resources[type] > SimManager.RESOURCE_MIN)
                {
                    allSources.Add(this);

                    if (log != null)
                    {
                        log.Append(indent, "Returning enabled tank as only source (", name, ":")
                        .AppendLine(partId, ")");
                    }

                    return;
                }
            }
            else
            {
                if (log != null)
                {
                    log.Append(indent, "Not fuel tank or disabled. HasType = ", resources.HasType(type))
                    .AppendLine("  FlowState = " + resourceFlowStates[type]);
                }
            }

            // Rule 7: If the part is radially attached to another part and it is child of that part in the ship's tree structure, it scans its
            // parent and returns whatever the parent scan returned. [Experiment] [Experiment]
            if (parent != null && parentAttach == AttachModes.SRF_ATTACH)
            {
                if (fuelCrossFeed)
                {
                    if (visited.Contains(parent))
                    {
                        if (log != null)
                        {
                            log.Append(indent, "Parent part already visited, skipping (", parent.name, ":")
                            .AppendLine(parent.partId, ")");
                        }
                    }
                    else
                    {
                        lastCount = allSources.Count;
                        this.parent.GetSourceSet_Old(type, includeSurfaceMountedParts, allParts, visited, allSources, log, indent);
                        if (allSources.Count > lastCount)
                        {
                            if (log != null)
                            {
                                log.Append(indent, "Returning ", (allSources.Count - lastCount), " parent sources (")
                                .AppendLine(this.name, ":", this.partId, ")");
                            }
                            return;
                        }
                    }
                }
            }

            // Rule 8: If all preceding rules failed, part returns empty list.
            if (log != null)
            {
                log.Append(indent, "Returning empty set, no sources found (", name, ":")
                .AppendLine(partId, ")");
            }

            return;
        }
Example #2
0
        public void GetSourceSet_Internal(int type, bool includeSurfaceMountedParts, List <PartSim> allParts, HashSet <PartSim> visited, HashSet <PartSim> allSources, ref int priMax, LogMsg log, String indent)
        {
            if (log != null)
            {
                log.Append(indent, "GetSourceSet_Internal(", ResourceContainer.GetResourceName(type), ") for ")
                .AppendLine(name, ":", partId);
                indent += "  ";
            }

            // Rule 1: Each part can be only visited once, If it is visited for second time in particular search it returns as is.
            if (visited.Contains(this))
            {
                if (log != null)
                {
                    log.Append(indent, "Nothing added, already visited (", name, ":")
                    .AppendLine(partId + ")");
                }
                return;
            }

            if (log != null)
            {
                log.AppendLine(indent, "Adding this to visited");
            }

            visited.Add(this);

            // Rule 2: Part performs scan on start of every fuel pipe ending in it. This scan is done in order in which pipes were installed.
            // Then it makes an union of fuel tank sets each pipe scan returned. If the resulting list is not empty, it is returned as result.
            //MonoBehaviour.print("for each fuel line");

            int lastCount = allSources.Count;

            for (int i = 0; i < this.fuelTargets.Count; i++)
            {
                PartSim partSim = this.fuelTargets[i];
                if (partSim != null)
                {
                    if (visited.Contains(partSim))
                    {
                        if (log != null)
                        {
                            log.Append(indent, "Fuel target already visited, skipping (", partSim.name, ":")
                            .AppendLine(partSim.partId, ")");
                        }
                    }
                    else
                    {
                        if (log != null)
                        {
                            log.Append(indent, "Adding fuel target as source (", partSim.name, ":")
                            .AppendLine(partSim.partId, ")");
                        }

                        partSim.GetSourceSet_Internal(type, includeSurfaceMountedParts, allParts, visited, allSources, ref priMax, log, indent);
                    }
                }
            }

            if (fuelCrossFeed)
            {
                if (includeSurfaceMountedParts)
                {
                    // check surface mounted fuel targets
                    for (int i = 0; i < surfaceMountFuelTargets.Count; i++)
                    {
                        PartSim partSim = this.surfaceMountFuelTargets[i];
                        if (partSim != null)
                        {
                            if (visited.Contains(partSim))
                            {
                                if (log != null)
                                {
                                    log.Append(indent, "Surface part already visited, skipping (", partSim.name, ":")
                                    .AppendLine(partSim.partId, ")");
                                }
                            }
                            else
                            {
                                if (log != null)
                                {
                                    log.Append(indent, "Adding surface part as source (", partSim.name, ":")
                                    .AppendLine(partSim.partId, ")");
                                }

                                partSim.GetSourceSet_Internal(type, includeSurfaceMountedParts, allParts, visited, allSources, ref priMax, log, indent);
                            }
                        }
                    }
                }

                lastCount = allSources.Count;
                //MonoBehaviour.print("for each attach node");
                for (int i = 0; i < this.attachNodes.Count; i++)
                {
                    AttachNodeSim attachSim = this.attachNodes[i];
                    if (attachSim.attachedPartSim != null)
                    {
                        if (attachSim.nodeType == AttachNode.NodeType.Stack)
                        {
                            if ((string.IsNullOrEmpty(noCrossFeedNodeKey) == false && attachSim.id.Contains(noCrossFeedNodeKey)) == false)
                            {
                                if (visited.Contains(attachSim.attachedPartSim))
                                {
                                    if (log != null)
                                    {
                                        log.Append(indent, "Attached part already visited, skipping (", attachSim.attachedPartSim.name, ":")
                                        .AppendLine(attachSim.attachedPartSim.partId, ")");
                                    }
                                }
                                else
                                {
                                    if (log != null)
                                    {
                                        log.Append(indent, "Adding attached part as source  (", attachSim.attachedPartSim.name, ":")
                                        .AppendLine(attachSim.attachedPartSim.partId, ")");
                                    }

                                    attachSim.attachedPartSim.GetSourceSet_Internal(type, includeSurfaceMountedParts, allParts, visited, allSources, ref priMax, log, indent);
                                }
                            }
                        }
                    }
                }
            }

            // If the part is fuel container for searched type of fuel (i.e. it has capability to contain that type of fuel and the fuel
            // type was not disabled) and it contains fuel, it adds itself.
            if (resources.HasType(type) && resourceFlowStates[type] > 0.0)
            {
                if (resources[type] > resRequestRemainingThreshold)
                {
                    // Get the priority of this tank
                    int pri = GetResourcePriority();
                    if (pri > priMax)
                    {
                        // This tank is higher priority than the previously added ones so we clear the sources
                        // and set the priMax to this priority
                        allSources.Clear();
                        priMax = pri;
                    }
                    // If this is the correct priority then add this to the sources
                    if (pri == priMax)
                    {
                        if (log != null)
                        {
                            log.Append(indent, "Adding enabled tank as source (", name, ":")
                            .AppendLine(partId, ")");
                        }

                        allSources.Add(this);
                    }
                }
            }
            else
            {
                if (log != null)
                {
                    log.Append(indent, "Not fuel tank or disabled. HasType = ", resources.HasType(type))
                    .AppendLine("  FlowState = " + resourceFlowStates[type]);
                }
            }
        }
Example #3
0
        public static EngineSim New(PartSim theEngine,
                                    ModuleEngines engineMod,
                                    double atmosphere,
                                    float machNumber,
                                    bool vectoredThrust,
                                    bool fullThrust,
                                    LogMsg log,
                                    float atmosphereDepth,
                                    CelestialBody body)
        {
            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.vacuumIsp    = 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.resourceFlowModes.Reset();
            engineSim.appliedForces.Clear();

            double flowRate = 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);
                float vacuumFlowModifier = GetFlowModifier(atmChangeFlow, atmCurve, 0, velCurve, machNumber, ref engineSim.maxMach);
                engineSim.isp          = atmosphereCurve.Evaluate((float)atmosphere);
                engineSim.vacuumIsp    = atmosphereCurve.Evaluate(0);
                engineSim.thrust       = GetThrust(Mathf.Lerp(minFuelFlow, maxFuelFlow, GetThrustPercent(thrustPercentage)) * flowModifier, engineSim.isp);
                engineSim.vacuumThrust = GetThrust(Mathf.Lerp(minFuelFlow, maxFuelFlow, GetThrustPercent(thrustPercentage)) * vacuumFlowModifier, engineSim.vacuumIsp);
                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);
                    }
                }
            }
            else
            {
                if (log != null)
                {
                    log.buf.AppendLine("hasVessel is false");
                }
                float altitude           = atmosphereDepth;
                float flowModifier       = GetFlowModifier(atmChangeFlow, atmCurve, body.GetDensity(body.GetPressure(altitude), body.GetTemperature(altitude)), velCurve, machNumber, ref engineSim.maxMach);
                float vacuumFlowModifier = GetFlowModifier(atmChangeFlow, atmCurve, 0, velCurve, machNumber, ref engineSim.maxMach);
                engineSim.isp          = atmosphereCurve.Evaluate((float)atmosphere);
                engineSim.vacuumIsp    = atmosphereCurve.Evaluate(0);
                engineSim.thrust       = GetThrust(Mathf.Lerp(minFuelFlow, maxFuelFlow, GetThrustPercent(thrustPercentage)) * flowModifier, engineSim.isp);
                engineSim.vacuumThrust = GetThrust(Mathf.Lerp(minFuelFlow, maxFuelFlow, GetThrustPercent(thrustPercentage)) * vacuumFlowModifier, engineSim.vacuumIsp);
                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);
            }

            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());
            }

            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);
        }
Example #4
0
        public void DumpPartToLog(LogMsg log, String prefix, List <PartSim> allParts = null)
        {
            if (log == null)
            {
                return;
            }

            log.Append(prefix);
            log.Append(name);
            log.Append(":[id = ", partId, ", decouple = ", decoupledInStage);
            log.Append(", invstage = ", inverseStage);

            //log.Append(", vesselName = '", vesselName, "'");
            //log.Append(", vesselType = ", SimManager.GetVesselTypeString(vesselType));
            //log.Append(", initialVesselName = '", initialVesselName, "'");

            log.Append(", isNoPhys = ", isNoPhysics);
            log.buf.AppendFormat(", baseMass = {0}", baseMass);
            log.buf.AppendFormat(", baseMassForCoM = {0}", baseMassForCoM);

            log.Append(", fuelCF = {0}", fuelCrossFeed);
            log.Append(", noCFNKey = '{0}'", noCrossFeedNodeKey);

            log.Append(", isSep = {0}", isSepratron);

            for (int i = 0; i < resources.Types.Count; i++)
            {
                int type = resources.Types[i];
                log.buf.AppendFormat(", {0} = {1:g6}", ResourceContainer.GetResourceName(type), resources[type]);
            }

            if (attachNodes.Count > 0)
            {
                log.Append(", attached = <");
                attachNodes[0].DumpToLog(log);
                for (int i = 1; i < attachNodes.Count; i++)
                {
                    log.Append(", ");
                    attachNodes[i].DumpToLog(log);
                }
                log.Append(">");
            }

            if (surfaceMountFuelTargets.Count > 0)
            {
                log.Append(", surface = <");
                log.Append(surfaceMountFuelTargets[0].name, ":", surfaceMountFuelTargets[0].partId);
                for (int i = 1; i < surfaceMountFuelTargets.Count; i++)
                {
                    log.Append(", ", surfaceMountFuelTargets[i].name, ":", surfaceMountFuelTargets[i].partId);
                }
                log.Append(">");
            }

            // Add more info here

            log.AppendLine("]");

            if (allParts != null)
            {
                String newPrefix = prefix + " ";
                for (int i = 0; i < allParts.Count; i++)
                {
                    PartSim partSim = allParts[i];
                    if (partSim.parent == this)
                    {
                        partSim.DumpPartToLog(log, newPrefix, allParts);
                    }
                }
            }
        }
Example #5
0
        public bool SetResourceDrains(LogMsg log, List <PartSim> allParts, List <PartSim> allFuelLines, HashSet <PartSim> drainingParts)
        {
            //DumpSourcePartSets(log, "before clear");
            foreach (HashSet <PartSim> sourcePartSet in sourcePartSets.Values)
            {
                sourcePartSet.Clear();
            }
            //DumpSourcePartSets(log, "after clear");

            for (int index = 0; index < this.resourceConsumptions.Types.Count; index++)
            {
                int type = this.resourceConsumptions.Types[index];

                HashSet <PartSim> sourcePartSet;
                if (!sourcePartSets.TryGetValue(type, out sourcePartSet))
                {
                    sourcePartSet = new HashSet <PartSim>();
                    sourcePartSets.Add(type, sourcePartSet);
                }

                switch ((ResourceFlowMode)this.resourceFlowModes[type])
                {
                case ResourceFlowMode.NO_FLOW:
                    if (partSim.resources[type] > SimManager.RESOURCE_MIN && partSim.resourceFlowStates[type] != 0)
                    {
                        sourcePartSet.Add(partSim);
                    }
                    break;

                case ResourceFlowMode.ALL_VESSEL:
                case ResourceFlowMode.ALL_VESSEL_BALANCE:
                    for (int i = 0; i < allParts.Count; i++)
                    {
                        PartSim aPartSim = allParts[i];
                        if (aPartSim.resources[type] > SimManager.RESOURCE_MIN && aPartSim.resourceFlowStates[type] != 0)
                        {
                            sourcePartSet.Add(aPartSim);
                        }
                    }
                    break;

                case ResourceFlowMode.STAGE_PRIORITY_FLOW:
                case ResourceFlowMode.STAGE_PRIORITY_FLOW_BALANCE:

                    if (log != null)
                    {
                        log.Append("Find ", ResourceContainer.GetResourceName(type), " sources for ", partSim.name)
                        .AppendLine(":", partSim.partId);
                    }
                    foreach (HashSet <PartSim> stagePartSet in stagePartSets.Values)
                    {
                        stagePartSet.Clear();
                    }
                    var maxStage = -1;

                    for (int i = 0; i < allParts.Count; i++)
                    {
                        var aPartSim = allParts[i];
                        //if (log != null) log.Append(aPartSim.name, ":" + aPartSim.partId, " contains ", aPartSim.resources[type])
                        //                  .AppendLine((aPartSim.resourceFlowStates[type] == 0) ? " (disabled)" : "");
                        if (aPartSim.resources[type] <= SimManager.RESOURCE_MIN || aPartSim.resourceFlowStates[type] == 0)
                        {
                            continue;
                        }

                        int stage = aPartSim.inverseStage;
                        if (stage > maxStage)
                        {
                            maxStage = stage;
                        }

                        HashSet <PartSim> tempPartSet;
                        if (!stagePartSets.TryGetValue(stage, out tempPartSet))
                        {
                            tempPartSet = new HashSet <PartSim>();
                            stagePartSets.Add(stage, tempPartSet);
                        }
                        tempPartSet.Add(aPartSim);
                    }

                    for (int j = maxStage; j >= -1; j--)
                    {
                        //if (log != null) log.AppendLine("Testing stage ", j);
                        HashSet <PartSim> stagePartSet;
                        if (stagePartSets.TryGetValue(j, out stagePartSet) && stagePartSet.Count > 0)
                        {
                            //if (log != null) log.AppendLine("Not empty");
                            // We have to copy the contents of the set here rather than copying the set reference or
                            // bad things (tm) happen
                            foreach (PartSim aPartSim in stagePartSet)
                            {
                                sourcePartSet.Add(aPartSim);
                            }
                            break;
                        }
                    }
                    break;

                case ResourceFlowMode.STACK_PRIORITY_SEARCH:
                case ResourceFlowMode.STAGE_STACK_FLOW:
                case ResourceFlowMode.STAGE_STACK_FLOW_BALANCE:
                    visited.Clear();

                    if (log != null)
                    {
                        log.Append("Find ", ResourceContainer.GetResourceName(type), " sources for ", partSim.name)
                        .AppendLine(":", partSim.partId);
                    }

                    partSim.GetSourceSet(type, true, allParts, visited, sourcePartSet, log, "");
                    break;

                default:
                    if (log != null)
                    {
                        log.Append("SetResourceDrains(", partSim.name, ":", partSim.partId)
                        .AppendLine(") Unexpected flow type for ", ResourceContainer.GetResourceName(type), ")");
                    }
                    break;
                }

                if (log != null && sourcePartSet.Count > 0)
                {
                    log.AppendLine("Source parts for ", ResourceContainer.GetResourceName(type), ":");
                    foreach (PartSim partSim in sourcePartSet)
                    {
                        log.AppendLine(partSim.name, ":", partSim.partId);
                    }
                }

                //DumpSourcePartSets(log, "after " + ResourceContainer.GetResourceName(type));
            }

            // If we don't have sources for all the needed resources then return false without setting up any drains
            for (int i = 0; i < this.resourceConsumptions.Types.Count; i++)
            {
                int type = this.resourceConsumptions.Types[i];
                HashSet <PartSim> sourcePartSet;
                if (!sourcePartSets.TryGetValue(type, out sourcePartSet) || sourcePartSet.Count == 0)
                {
                    if (log != null)
                    {
                        log.AppendLine("No source of ", ResourceContainer.GetResourceName(type));
                    }
                    isActive = false;
                    return(false);
                }
            }

            // Now we set the drains on the members of the sets and update the draining parts set
            for (int i = 0; i < this.resourceConsumptions.Types.Count; i++)
            {
                int type = this.resourceConsumptions.Types[i];
                HashSet <PartSim> sourcePartSet = sourcePartSets[type];
                ResourceFlowMode  mode          = (ResourceFlowMode)resourceFlowModes[type];
                double            consumption   = resourceConsumptions[type];
                double            amount        = 0d;
                double            total         = 0d;
                if (mode == ResourceFlowMode.ALL_VESSEL_BALANCE ||
                    mode == ResourceFlowMode.STAGE_PRIORITY_FLOW_BALANCE ||
                    mode == ResourceFlowMode.STAGE_STACK_FLOW_BALANCE ||
                    mode == ResourceFlowMode.STACK_PRIORITY_SEARCH)
                {
                    foreach (PartSim partSim in sourcePartSet)
                    {
                        total += partSim.resources[type];
                    }
                }
                else
                {
                    amount = consumption / sourcePartSet.Count;
                }

                // Loop through the members of the set
                foreach (PartSim partSim in sourcePartSet)
                {
                    if (total != 0d)
                    {
                        amount = consumption * partSim.resources[type] / total;
                    }

                    if (log != null)
                    {
                        log.Append("Adding drain of ", amount, " ", ResourceContainer.GetResourceName(type))
                        .AppendLine(" to ", partSim.name, ":", partSim.partId);
                    }

                    partSim.resourceDrains.Add(type, amount);
                    drainingParts.Add(partSim);
                }
            }
            return(true);
        }