public override ManeuverParameters MakeNodeImpl(Orbit o, double universalTime, MechJebModuleTargetController target)
{
double UT = timeSelector.ComputeManeuverTime(o, universalTime, target);
if (o.referenceBody.Radius + newPeA > o.Radius(UT))
{
string burnAltitude = MuUtils.ToSI(o.Radius(UT) - o.referenceBody.Radius) + "m";
throw new Exception("new periapsis cannot be higher than the altitude of the burn (" + burnAltitude + ")");
}
else if (newPeA < -o.referenceBody.Radius)
{
throw new Exception("new periapsis cannot be lower than minus the radius of " + o.referenceBody.theName + "(-" + MuUtils.ToSI(o.referenceBody.Radius, 3) + "m)");
}
return(new ManeuverParameters(OrbitalManeuverCalculator.DeltaVToChangePeriapsis(o, UT, newPeA + o.referenceBody.Radius), UT));
}
public override List <ManeuverParameters> MakeNodesImpl(Orbit o, double universalTime, MechJebModuleTargetController target)
{
double UT = timeSelector.ComputeManeuverTime(o, universalTime, target);
if (o.referenceBody.Radius + newPeA > o.Radius(UT))
{
string burnAltitude = MuUtils.ToSI(o.Radius(UT) - o.referenceBody.Radius) + "m";
throw new OperationException(Localizer.Format("#MechJeb_Pe_Exception1") + " (" + burnAltitude + ")");//new periapsis cannot be higher than the altitude of the burn
}
else if (newPeA < -o.referenceBody.Radius)
{
throw new OperationException(Localizer.Format("#MechJeb_Pe_Exception2", o.referenceBody.displayName) + "(-" + MuUtils.ToSI(o.referenceBody.Radius, 3) + "m)");//new periapsis cannot be lower than minus the radius of <<1>>
}
List <ManeuverParameters> NodeList = new List <ManeuverParameters>();
NodeList.Add(new ManeuverParameters(OrbitalManeuverCalculator.DeltaVToChangePeriapsis(o, UT, newPeA + o.referenceBody.Radius), UT));
return(NodeList);
}
// Compute the delta-V of the burn at the givent time required to enter an orbit with a period of (resonanceDivider-1)/resonanceDivider of the starting orbit period
public static Vector3d DeltaVToResonantOrbit(Orbit o, double UT, double f)
{
double a = o.ApR;
double p = o.PeR;
// Thanks wolframAlpha for the Math
// x = (a^3 f^2 + 3 a^2 f^2 p + 3 a f^2 p^2 + f^2 p^3)^(1/3)-a
double x = Math.Pow(Math.Pow(a, 3) * Math.Pow(f, 2) + 3 * Math.Pow(a, 2) * Math.Pow(f, 2) * p + 3 * a * Math.Pow(f, 2) * Math.Pow(p, 2) + Math.Pow(f, 2) * Math.Pow(p, 3), 1d / 3) - a;
if (x < 0)
{
return(Vector3d.zero);
}
if (f > 1)
{
return(OrbitalManeuverCalculator.DeltaVToChangeApoapsis(o, UT, x));
}
else
{
return(OrbitalManeuverCalculator.DeltaVToChangePeriapsis(o, UT, x));
}
}
public override void Drive(FlightCtrlState s)
{
if (!core.target.NormalTargetExists)
{
users.Clear();
return;
}
core.node.autowarp = core.target.Distance > 1000; //don't warp when close to target, because warping introduces small perturbations
//If we get within the target distance and then next maneuver node is still
//far in the future, delete it and we will create a new one to match velocities immediately.
//This can often happen because the target vessel's orbit shifts slightly when it is unpacked.
if (core.target.Distance < desiredDistance &&
vessel.patchedConicSolver.maneuverNodes.Count > 0 &&
vessel.patchedConicSolver.maneuverNodes[0].UT > vesselState.time + 1)
{
vessel.RemoveAllManeuverNodes();
}
if (vessel.patchedConicSolver.maneuverNodes.Count > 0)
{
//If we have plotted a maneuver, execute it.
if (!core.node.enabled)
{
core.node.ExecuteAllNodes(this);
}
}
else if (core.target.Distance < desiredDistance * 1.05 + 2 &&
core.target.RelativeVelocity.magnitude < 1)
{
//finished
users.Clear();
core.thrust.ThrustOff();
status = "Successful rendezvous";
}
else if (core.target.Distance < desiredDistance * 1.05 + 2)
{
//We are within the target distance: match velocities
double UT = vesselState.time;
Vector3d dV = OrbitalManeuverCalculator.DeltaVToMatchVelocities(orbit, UT, core.target.Orbit);
vessel.PlaceManeuverNode(orbit, dV, UT);
status = "Within " + desiredDistance.ToString() + "m: matching velocities.";
}
else if (core.target.Distance < vesselState.radius / 25)
{
if (orbit.NextClosestApproachDistance(core.target.Orbit, vesselState.time) < desiredDistance &&
orbit.NextClosestApproachTime(core.target.Orbit, vesselState.time) < vesselState.time + 150)
{
//We're close to the target, and on a course that will take us closer. Kill relvel at closest approach
double UT = orbit.NextClosestApproachTime(core.target.Orbit, vesselState.time);
Vector3d dV = OrbitalManeuverCalculator.DeltaVToMatchVelocities(orbit, UT, core.target.Orbit);
//adjust burn time so as to come to rest at the desired distance from the target:
double approachDistance = orbit.Separation(core.target.Orbit, UT);
double approachSpeed = (orbit.SwappedOrbitalVelocityAtUT(UT) - core.target.Orbit.SwappedOrbitalVelocityAtUT(UT)).magnitude;
if (approachDistance < desiredDistance)
{
UT -= Math.Sqrt(Math.Abs(desiredDistance * desiredDistance - approachDistance * approachDistance)) / approachSpeed;
}
//if coming in hot, stop early to avoid crashing:
if (approachSpeed > 10)
{
UT -= 1;
}
vessel.PlaceManeuverNode(orbit, dV, UT);
status = "Planning to match velocities at closest approach.";
}
else
{
//We're not far from the target. Close the distance
double closingSpeed = core.target.Distance / 100;
if (closingSpeed > 100)
{
closingSpeed = 100;
}
double closingTime = core.target.Distance / closingSpeed;
double UT = vesselState.time + 15;
double interceptUT = UT + closingTime;
Vector3d dV = OrbitalManeuverCalculator.DeltaVToInterceptAtTime(orbit, UT, core.target.Orbit, interceptUT, 0);
vessel.PlaceManeuverNode(orbit, dV, UT);
status = "Close to target: plotting intercept";
}
}
else if (orbit.NextClosestApproachDistance(core.target.Orbit, vesselState.time) < core.target.Orbit.semiMajorAxis / 25)
{
//We're not close to the target, but we're on an approximate intercept course.
//Kill relative velocities at closest approach
double UT = orbit.NextClosestApproachTime(core.target.Orbit, vesselState.time);
Vector3d dV = OrbitalManeuverCalculator.DeltaVToMatchVelocities(orbit, UT, core.target.Orbit);
//adjust burn time so as to come to rest at the desired distance from the target:
double approachDistance = (orbit.SwappedAbsolutePositionAtUT(UT) - core.target.Orbit.SwappedAbsolutePositionAtUT(UT)).magnitude;
double approachSpeed = (orbit.SwappedOrbitalVelocityAtUT(UT) - core.target.Orbit.SwappedOrbitalVelocityAtUT(UT)).magnitude;
if (approachDistance < desiredDistance)
{
UT -= Math.Sqrt(Math.Abs(desiredDistance * desiredDistance - approachDistance * approachDistance)) / approachSpeed;
}
//if coming in hot, stop early to avoid crashing:
if (approachSpeed > 10)
{
UT -= 1;
}
vessel.PlaceManeuverNode(orbit, dV, UT);
status = "On intercept course. Planning to match velocities at closest approach.";
}
else if (orbit.RelativeInclination(core.target.Orbit) < 0.05 && orbit.eccentricity < 0.05 && orbit.SynodicPeriod(core.target.Orbit) < 5 * orbit.period)
{
//We're not on an intercept course, but we have a circular orbit in the right plane.
//Also we are phasing quickly enough that it won't be too long until an intercept window
//Plot a Hohmann transfer intercept.
double UT;
Vector3d dV = OrbitalManeuverCalculator.DeltaVAndTimeForHohmannTransfer(orbit, core.target.Orbit, vesselState.time, out UT);
vessel.PlaceManeuverNode(orbit, dV, UT);
status = "Planning Hohmann transfer for intercept.";
}
else if (orbit.RelativeInclination(core.target.Orbit) < 0.05 && orbit.eccentricity < 0.05)
{
//We are in a circular orbit in the right plane, but we aren't phasing quickly enough. Move to a better phasing orbit
double lowPhasingRadius = core.target.Orbit.semiMajorAxis / 1.16;
double highPhasingRadius = core.target.Orbit.semiMajorAxis * 1.16;
bool useLowPhasingRadius = (lowPhasingRadius > mainBody.RealMaxAtmosphereAltitude() + 3000 && orbit.semiMajorAxis < core.target.orbit.semiMajorAxis);
double phasingOrbitRadius = (useLowPhasingRadius ? lowPhasingRadius : highPhasingRadius);
if (orbit.ApR < phasingOrbitRadius)
{
double UT1 = vesselState.time + 15;
Vector3d dV1 = OrbitalManeuverCalculator.DeltaVToChangeApoapsis(orbit, UT1, phasingOrbitRadius);
vessel.PlaceManeuverNode(orbit, dV1, UT1);
Orbit transferOrbit = vessel.patchedConicSolver.maneuverNodes[0].nextPatch;
double UT2 = transferOrbit.NextApoapsisTime(UT1);
Vector3d dV2 = OrbitalManeuverCalculator.DeltaVToCircularize(transferOrbit, UT2);
vessel.PlaceManeuverNode(transferOrbit, dV2, UT2);
}
else if (orbit.PeR > phasingOrbitRadius)
{
double UT1 = vesselState.time + 15;
Vector3d dV1 = OrbitalManeuverCalculator.DeltaVToChangePeriapsis(orbit, UT1, phasingOrbitRadius);
vessel.PlaceManeuverNode(orbit, dV1, UT1);
Orbit transferOrbit = vessel.patchedConicSolver.maneuverNodes[0].nextPatch;
double UT2 = transferOrbit.NextPeriapsisTime(UT1);
Vector3d dV2 = OrbitalManeuverCalculator.DeltaVToCircularize(transferOrbit, UT2);
vessel.PlaceManeuverNode(transferOrbit, dV2, UT2);
}
else
{
double UT = orbit.NextTimeOfRadius(vesselState.time, phasingOrbitRadius);
Vector3d dV = OrbitalManeuverCalculator.DeltaVToCircularize(orbit, UT);
vessel.PlaceManeuverNode(orbit, dV, UT);
}
status = "Increasing phasing rate by establishing new phasing orbit at " + MuUtils.ToSI(phasingOrbitRadius - mainBody.Radius, 0) + "m";
}
else if (orbit.RelativeInclination(core.target.Orbit) < 0.05)
{
//We're not on an intercept course. We're in the right plane, but our orbit isn't circular. Circularize.
bool circularizeAtPe;
if (orbit.eccentricity > 1)
{
circularizeAtPe = true;
}
else
{
circularizeAtPe = Math.Abs(orbit.PeR - core.target.Orbit.semiMajorAxis) < Math.Abs(orbit.ApR - core.target.Orbit.semiMajorAxis);
}
double UT;
if (circularizeAtPe)
{
UT = Math.Max(vesselState.time, orbit.NextPeriapsisTime(vesselState.time));
}
else
{
UT = orbit.NextApoapsisTime(vesselState.time);
}
Vector3d dV = OrbitalManeuverCalculator.DeltaVToCircularize(orbit, UT);
vessel.PlaceManeuverNode(orbit, dV, UT);
status = "Circularizing.";
}
else
{
//We're not on an intercept course, and we're not in the right plane. Match planes
bool ascending;
if (orbit.eccentricity < 1)
{
if (orbit.TimeOfAscendingNode(core.target.Orbit, vesselState.time) < orbit.TimeOfDescendingNode(core.target.Orbit, vesselState.time))
{
ascending = true;
}
else
{
ascending = false;
}
}
else
{
if (orbit.AscendingNodeExists(core.target.Orbit))
{
ascending = true;
}
else
{
ascending = false;
}
}
double UT;
Vector3d dV;
if (ascending)
{
dV = OrbitalManeuverCalculator.DeltaVAndTimeToMatchPlanesAscending(orbit, core.target.Orbit, vesselState.time, out UT);
}
else
{
dV = OrbitalManeuverCalculator.DeltaVAndTimeToMatchPlanesDescending(orbit, core.target.Orbit, vesselState.time, out UT);
}
vessel.PlaceManeuverNode(orbit, dV, UT);
status = "Matching planes.";
}
}
protected override void WindowGUI(int windowID)
{
if (!core.target.NormalTargetExists)
{
GUILayout.Label("Select a target to rendezvous with.");
base.WindowGUI(windowID);
return;
}
if (core.target.Orbit.referenceBody != orbit.referenceBody)
{
GUILayout.Label("Rendezvous target must be in the same sphere of influence.");
base.WindowGUI(windowID);
return;
}
GUILayout.BeginVertical();
//Information readouts:
GuiUtils.SimpleLabel("Rendezvous target", core.target.Name);
double leadTime = 30;
GuiUtils.SimpleLabel("Target orbit", MuUtils.ToSI(core.target.Orbit.PeA, 3) + "m x " + MuUtils.ToSI(core.target.Orbit.ApA, 3) + "m");
GuiUtils.SimpleLabel("Current orbit", MuUtils.ToSI(orbit.PeA, 3) + "m x " + MuUtils.ToSI(orbit.ApA, 3) + "m");
GuiUtils.SimpleLabel("Relative inclination", orbit.RelativeInclination(core.target.Orbit).ToString("F2") + "º");
double closestApproachTime = orbit.NextClosestApproachTime(core.target.Orbit, vesselState.time);
GuiUtils.SimpleLabel("Time until closest approach", GuiUtils.TimeToDHMS(closestApproachTime - vesselState.time));
GuiUtils.SimpleLabel("Separation at closest approach", MuUtils.ToSI(orbit.Separation(core.target.Orbit, closestApproachTime), 0) + "m");
//Maneuver planning buttons:
if (GUILayout.Button("Align Planes"))
{
double UT;
Vector3d dV;
if (orbit.AscendingNodeExists(core.target.Orbit))
{
dV = OrbitalManeuverCalculator.DeltaVAndTimeToMatchPlanesAscending(orbit, core.target.Orbit, vesselState.time, out UT);
}
else
{
dV = OrbitalManeuverCalculator.DeltaVAndTimeToMatchPlanesDescending(orbit, core.target.Orbit, vesselState.time, out UT);
}
vessel.RemoveAllManeuverNodes();
vessel.PlaceManeuverNode(orbit, dV, UT);
}
GUILayout.BeginHorizontal();
if (GUILayout.Button("Establish new orbit at"))
{
double phasingOrbitRadius = phasingOrbitAltitude + mainBody.Radius;
vessel.RemoveAllManeuverNodes();
if (orbit.ApR < phasingOrbitRadius)
{
double UT1 = vesselState.time + leadTime;
Vector3d dV1 = OrbitalManeuverCalculator.DeltaVToChangeApoapsis(orbit, UT1, phasingOrbitRadius);
vessel.PlaceManeuverNode(orbit, dV1, UT1);
Orbit transferOrbit = vessel.patchedConicSolver.maneuverNodes[0].nextPatch;
double UT2 = transferOrbit.NextApoapsisTime(UT1);
Vector3d dV2 = OrbitalManeuverCalculator.DeltaVToCircularize(transferOrbit, UT2);
vessel.PlaceManeuverNode(transferOrbit, dV2, UT2);
}
else if (orbit.PeR > phasingOrbitRadius)
{
double UT1 = vesselState.time + leadTime;
Vector3d dV1 = OrbitalManeuverCalculator.DeltaVToChangePeriapsis(orbit, UT1, phasingOrbitRadius);
vessel.PlaceManeuverNode(orbit, dV1, UT1);
Orbit transferOrbit = vessel.patchedConicSolver.maneuverNodes[0].nextPatch;
double UT2 = transferOrbit.NextPeriapsisTime(UT1);
Vector3d dV2 = OrbitalManeuverCalculator.DeltaVToCircularize(transferOrbit, UT2);
vessel.PlaceManeuverNode(transferOrbit, dV2, UT2);
}
else
{
double UT = orbit.NextTimeOfRadius(vesselState.time, phasingOrbitRadius);
Vector3d dV = OrbitalManeuverCalculator.DeltaVToCircularize(orbit, UT);
vessel.PlaceManeuverNode(orbit, dV, UT);
}
}
phasingOrbitAltitude.text = GUILayout.TextField(phasingOrbitAltitude.text, GUILayout.Width(70));
GUILayout.Label("km", GUILayout.ExpandWidth(false));
GUILayout.EndHorizontal();
if (GUILayout.Button("Intercept with Hohmann transfer"))
{
double UT;
Vector3d dV = OrbitalManeuverCalculator.DeltaVAndTimeForHohmannTransfer(orbit, core.target.Orbit, vesselState.time, out UT);
vessel.RemoveAllManeuverNodes();
vessel.PlaceManeuverNode(orbit, dV, UT);
}
if (GUILayout.Button("Match velocities at closest approach"))
{
double UT = closestApproachTime;
Vector3d dV = OrbitalManeuverCalculator.DeltaVToMatchVelocities(orbit, UT, core.target.Orbit);
vessel.RemoveAllManeuverNodes();
vessel.PlaceManeuverNode(orbit, dV, UT);
}
if (GUILayout.Button("Get closer"))
{
double UT = vesselState.time;
double interceptUT = UT + 100;
Vector3d dV = OrbitalManeuverCalculator.DeltaVToInterceptAtTime(orbit, UT, core.target.Orbit, interceptUT, 10);
vessel.RemoveAllManeuverNodes();
vessel.PlaceManeuverNode(orbit, dV, UT);
}
GUILayout.EndVertical();
base.WindowGUI(windowID);
}
void FixedUpdateDeorbitBurn()
{
//if we don't want to deorbit but we're already on a reentry trajectory, we can't wait until the ideal point
//in the orbit to deorbt; we already have deorbited.
if (part.vessel.orbit.ApA < part.vessel.mainBody.RealMaxAtmosphereAltitude())
{
landStep = LandStep.COURSE_CORRECTIONS;
core.thrust.targetThrottle = 0;
return;
}
//We aim for a trajectory that
// a) has the same vertical speed as our current trajectory
// b) has a horizontal speed that will give it a periapsis of -10% of the body's radius
// c) has a heading that points toward where the target will be at the end of free-fall, accounting for planetary rotation
Vector3d horizontalDV = OrbitalManeuverCalculator.DeltaVToChangePeriapsis(orbit, vesselState.time, 0.9 * mainBody.Radius); //Imagine we are going to deorbit now. Find the burn that would lower our periapsis to -10% of the planet's radius
Orbit forwardDeorbitTrajectory = orbit.PerturbedOrbit(vesselState.time, horizontalDV); //Compute the orbit that would put us on
double freefallTime = forwardDeorbitTrajectory.NextTimeOfRadius(vesselState.time, mainBody.Radius) - vesselState.time; //Find how long that orbit would take to impact the ground
double planetRotationDuringFreefall = 360 * freefallTime / mainBody.rotationPeriod; //Find how many degrees the planet will rotate during that time
Vector3d currentTargetRadialVector = mainBody.GetRelSurfacePosition(core.target.targetLatitude, core.target.targetLongitude, 0); //Find the current vector from the planet center to the target landing site
Quaternion freefallPlanetRotation = Quaternion.AngleAxis((float)planetRotationDuringFreefall, mainBody.angularVelocity); //Construct a quaternion representing the rotation of the planet found above
Vector3d freefallEndTargetRadialVector = freefallPlanetRotation * currentTargetRadialVector; //Use this quaternion to find what the vector from the planet center to the target will be when we hit the ground
Vector3d freefallEndTargetPosition = mainBody.position + freefallEndTargetRadialVector; //Then find the actual position of the target at that time
Vector3d freefallEndHorizontalToTarget = Vector3d.Exclude(vesselState.up, freefallEndTargetPosition - vesselState.CoM).normalized; //Find a horizontal unit vector that points toward where the target will be when we hit the ground
Vector3d currentHorizontalVelocity = Vector3d.Exclude(vesselState.up, vesselState.velocityVesselOrbit); //Find our current horizontal velocity
double finalHorizontalSpeed = (currentHorizontalVelocity + horizontalDV).magnitude; //Find the desired horizontal speed after the deorbit burn
Vector3d finalHorizontalVelocity = finalHorizontalSpeed * freefallEndHorizontalToTarget; //Combine the desired speed and direction to get the desired velocity after the deorbi burn
//Compute the angle between the location of the target at the end of freefall and the normal to our orbit:
Vector3d currentRadialVector = vesselState.CoM - part.vessel.mainBody.position;
double targetAngleToOrbitNormal = Vector3d.Angle(orbit.SwappedOrbitNormal(), freefallEndTargetRadialVector);
targetAngleToOrbitNormal = Math.Min(targetAngleToOrbitNormal, 180 - targetAngleToOrbitNormal);
double targetAheadAngle = Vector3d.Angle(currentRadialVector, freefallEndTargetRadialVector); //How far ahead the target is, in degrees
double planeChangeAngle = Vector3d.Angle(currentHorizontalVelocity, freefallEndHorizontalToTarget); //The plane change required to get onto the deorbit trajectory, in degrees
//If the target is basically almost normal to our orbit, it doesn't matter when we deorbit; might as well do it now
//Otherwise, wait until the target is ahead
if (targetAngleToOrbitNormal < 10 ||
(targetAheadAngle < 90 && targetAheadAngle > 60 && planeChangeAngle < 90))
{
deorbitBurnTriggered = true;
}
if (deorbitBurnTriggered)
{
if (!MuUtils.PhysicsRunning())
{
core.warp.MinimumWarp(true); //get out of warp
}
Vector3d deltaV = finalHorizontalVelocity - currentHorizontalVelocity;
core.attitude.attitudeTo(deltaV.normalized, AttitudeReference.INERTIAL, this);
if (deltaV.magnitude < 2.0)
{
landStep = LandStep.COURSE_CORRECTIONS;
}
status = "Doing high deorbit burn";
}
else
{
core.attitude.attitudeTo(Vector3d.back, AttitudeReference.ORBIT, this);
if (core.node.autowarp)
{
core.warp.WarpRegularAtRate((float)(orbit.period / 10));
}
status = "Moving to high deorbit burn point";
}
}
protected override void WindowGUI(int windowID)
{
if (!core.target.NormalTargetExists)
{
GUILayout.Label("Select a target to rendezvous with.");
base.WindowGUI(windowID);
return;
}
if (core.target.Orbit.referenceBody != orbit.referenceBody)
{
GUILayout.Label("Rendezvous target must be in the same sphere of influence.");
base.WindowGUI(windowID);
return;
}
GUILayout.BeginVertical();
step = (Step)GuiUtils.ArrowSelector((int)step, numSteps, stepStrings[(int)step]);
double leadTime = 30;
switch (step)
{
case Step.AlignPlanes:
GUILayout.Label("First, bring your relative inclination to zero by aligning your orbital plane with the target's orbital plane:");
GUILayout.Label("Relative inclination: " + orbit.RelativeInclination(core.target.Orbit).ToString("F2") + "º");
if (GUILayout.Button("Align Planes"))
{
double UT;
Vector3d dV;
if (orbit.AscendingNodeExists(core.target.Orbit))
{
dV = OrbitalManeuverCalculator.DeltaVAndTimeToMatchPlanesAscending(orbit, core.target.Orbit, vesselState.time, out UT);
}
else
{
dV = OrbitalManeuverCalculator.DeltaVAndTimeToMatchPlanesDescending(orbit, core.target.Orbit, vesselState.time, out UT);
}
vessel.PlaceManeuverNode(orbit, dV, UT);
}
break;
case Step.PhasingOrbit:
double phasingOrbitRadius = 0.9 * core.target.Orbit.PeR;
if (phasingOrbitRadius < orbit.referenceBody.Radius + orbit.referenceBody.RealMaxAtmosphereAltitude())
{
phasingOrbitRadius = 1.1 * core.target.Orbit.ApR;
}
double phasingOrbitAltitude = phasingOrbitRadius - mainBody.Radius;
GUILayout.Label("Next, establish a circular phasing orbit close to the target orbit.");
GUILayout.Label("Target orbit: " + MuUtils.ToSI(core.target.Orbit.PeA, 3) + "m x " + MuUtils.ToSI(core.target.Orbit.ApA, 3) + "m");
GUILayout.Label("Suggested phasing orbit: " + MuUtils.ToSI(phasingOrbitAltitude, 3) + "m x " + MuUtils.ToSI(phasingOrbitAltitude, 3) + "m");
GUILayout.Label("Current orbit: " + MuUtils.ToSI(orbit.PeA, 3) + "m x " + MuUtils.ToSI(orbit.ApA, 3) + "m");
if (GUILayout.Button("Establish Phasing Orbit"))
{
if (orbit.ApR < phasingOrbitRadius)
{
double UT1 = vesselState.time + leadTime;
Vector3d dV1 = OrbitalManeuverCalculator.DeltaVToChangeApoapsis(orbit, UT1, phasingOrbitRadius);
vessel.PlaceManeuverNode(orbit, dV1, UT1);
Orbit transferOrbit = vessel.patchedConicSolver.maneuverNodes[0].nextPatch;
double UT2 = transferOrbit.NextApoapsisTime(UT1);
Vector3d dV2 = OrbitalManeuverCalculator.DeltaVToCircularize(transferOrbit, UT2);
vessel.PlaceManeuverNode(transferOrbit, dV2, UT2);
}
else if (orbit.PeR > phasingOrbitRadius)
{
double UT1 = vesselState.time + leadTime;
Vector3d dV1 = OrbitalManeuverCalculator.DeltaVToChangePeriapsis(orbit, UT1, phasingOrbitRadius);
vessel.PlaceManeuverNode(orbit, dV1, UT1);
Orbit transferOrbit = vessel.patchedConicSolver.maneuverNodes[0].nextPatch;
double UT2 = transferOrbit.NextPeriapsisTime(UT1);
Vector3d dV2 = OrbitalManeuverCalculator.DeltaVToCircularize(transferOrbit, UT2);
vessel.PlaceManeuverNode(transferOrbit, dV2, UT2);
}
else
{
double UT = orbit.NextTimeOfRadius(vesselState.time, phasingOrbitRadius);
Vector3d dV = OrbitalManeuverCalculator.DeltaVToCircularize(orbit, UT);
vessel.PlaceManeuverNode(orbit, dV, UT);
}
}
break;
case Step.Transfer:
GUILayout.Label("Once in the phasing orbit, transfer to the target orbit at just the right time to intercept the target:");
if (GUILayout.Button("Intercept with Hohmann transfer"))
{
double UT;
Vector3d dV = OrbitalManeuverCalculator.DeltaVAndTimeForHohmannTransfer(orbit, core.target.Orbit, vesselState.time, out UT);
vessel.PlaceManeuverNode(orbit, dV, UT);
}
double closestApproachTime = orbit.NextClosestApproachTime(core.target.Orbit, vesselState.time);
GUILayout.Label("Once on a transfer trajectory, match velocities at closest approach:");
GUILayout.Label("Time until closest approach: " + GuiUtils.TimeToDHMS(closestApproachTime - vesselState.time));
GUILayout.Label("Separation at closest approach: " + MuUtils.ToSI(orbit.Separation(core.target.Orbit, closestApproachTime), 0) + "m");
if (GUILayout.Button("Match velocities at closest approach"))
{
double UT = closestApproachTime;
Vector3d dV = OrbitalManeuverCalculator.DeltaVToMatchVelocities(orbit, UT, core.target.Orbit);
vessel.PlaceManeuverNode(orbit, dV, UT);
}
break;
case Step.GetCloser:
GUILayout.Label("If you aren't close enough after matching velocities, thrust gently toward the target:");
if (GUILayout.Button("Get closer"))
{
double UT = vesselState.time;
double interceptUT = UT + 100;
Vector3d dV = OrbitalManeuverCalculator.DeltaVToInterceptAtTime(orbit, UT, core.target.Orbit, interceptUT, 10);
vessel.PlaceManeuverNode(orbit, dV, UT);
}
GUILayout.Label("Then match velocities again at closest approach");
break;
}
GUILayout.EndVertical();
MechJebModuleRendezvousAutopilot autopilot = core.GetComputerModule <MechJebModuleRendezvousAutopilot>();
if (autopilot != null)
{
bool active = GUILayout.Toggle(autopilot.enabled, "Autopilot enable");
if (autopilot.enabled != active)
{
if (active)
{
autopilot.users.Add(this);
}
else
{
autopilot.users.Remove(this);
}
}
if (autopilot.enabled)
{
GUILayout.Label("Status: " + autopilot.status);
}
}
base.WindowGUI(windowID);
}
protected override void WindowGUI(int windowID)
{
if (!core.target.NormalTargetExists)
{
GUILayout.Label(Localizer.Format("#MechJeb_RZplan_label1"));//"Select a target to rendezvous with."
base.WindowGUI(windowID);
return;
}
if (core.target.TargetOrbit.referenceBody != orbit.referenceBody)
{
GUILayout.Label(Localizer.Format("#MechJeb_RZplan_label2"));//"Rendezvous target must be in the same sphere of influence."
base.WindowGUI(windowID);
return;
}
GUILayout.BeginVertical();
//Information readouts:
GuiUtils.SimpleLabel(Localizer.Format("#MechJeb_RZplan_label3"), core.target.Name);//"Rendezvous target"
const double leadTime = 30;
GuiUtils.SimpleLabel(Localizer.Format("#MechJeb_RZplan_label4"), MuUtils.ToSI(core.target.TargetOrbit.PeA, 3) + "m x " + MuUtils.ToSI(core.target.TargetOrbit.ApA, 3) + "m"); //"Target orbit"
GuiUtils.SimpleLabel(Localizer.Format("#MechJeb_RZplan_label5"), MuUtils.ToSI(orbit.PeA, 3) + "m x " + MuUtils.ToSI(orbit.ApA, 3) + "m"); //"Current orbit"
GuiUtils.SimpleLabel(Localizer.Format("#MechJeb_RZplan_label6"), orbit.RelativeInclination(core.target.TargetOrbit).ToString("F2") + "º"); //"Relative inclination"
double closestApproachTime = orbit.NextClosestApproachTime(core.target.TargetOrbit, vesselState.time);
GuiUtils.SimpleLabel(Localizer.Format("#MechJeb_RZplan_label7"), GuiUtils.TimeToDHMS(closestApproachTime - vesselState.time)); //"Time until closest approach"
GuiUtils.SimpleLabel(Localizer.Format("#MechJeb_RZplan_label8"), MuUtils.ToSI(orbit.Separation(core.target.TargetOrbit, closestApproachTime), 0) + "m"); //"Separation at closest approach"
//Maneuver planning buttons:
if (GUILayout.Button(Localizer.Format("#MechJeb_RZplan_button1")))//"Align Planes"
{
double UT;
Vector3d dV;
if (orbit.AscendingNodeExists(core.target.TargetOrbit))
{
dV = OrbitalManeuverCalculator.DeltaVAndTimeToMatchPlanesAscending(orbit, core.target.TargetOrbit, vesselState.time, out UT);
}
else
{
dV = OrbitalManeuverCalculator.DeltaVAndTimeToMatchPlanesDescending(orbit, core.target.TargetOrbit, vesselState.time, out UT);
}
vessel.RemoveAllManeuverNodes();
vessel.PlaceManeuverNode(orbit, dV, UT);
}
GUILayout.BeginHorizontal();
if (GUILayout.Button(Localizer.Format("#MechJeb_RZplan_button2")))//"Establish new orbit at"
{
double phasingOrbitRadius = phasingOrbitAltitude + mainBody.Radius;
vessel.RemoveAllManeuverNodes();
if (orbit.ApR < phasingOrbitRadius)
{
double UT1 = vesselState.time + leadTime;
Vector3d dV1 = OrbitalManeuverCalculator.DeltaVToChangeApoapsis(orbit, UT1, phasingOrbitRadius);
vessel.PlaceManeuverNode(orbit, dV1, UT1);
Orbit transferOrbit = vessel.patchedConicSolver.maneuverNodes[0].nextPatch;
double UT2 = transferOrbit.NextApoapsisTime(UT1);
Vector3d dV2 = OrbitalManeuverCalculator.DeltaVToCircularize(transferOrbit, UT2);
vessel.PlaceManeuverNode(transferOrbit, dV2, UT2);
}
else if (orbit.PeR > phasingOrbitRadius)
{
double UT1 = vesselState.time + leadTime;
Vector3d dV1 = OrbitalManeuverCalculator.DeltaVToChangePeriapsis(orbit, UT1, phasingOrbitRadius);
vessel.PlaceManeuverNode(orbit, dV1, UT1);
Orbit transferOrbit = vessel.patchedConicSolver.maneuverNodes[0].nextPatch;
double UT2 = transferOrbit.NextPeriapsisTime(UT1);
Vector3d dV2 = OrbitalManeuverCalculator.DeltaVToCircularize(transferOrbit, UT2);
vessel.PlaceManeuverNode(transferOrbit, dV2, UT2);
}
else
{
double UT = orbit.NextTimeOfRadius(vesselState.time, phasingOrbitRadius);
Vector3d dV = OrbitalManeuverCalculator.DeltaVToCircularize(orbit, UT);
vessel.PlaceManeuverNode(orbit, dV, UT);
}
}
phasingOrbitAltitude.text = GUILayout.TextField(phasingOrbitAltitude.text, GUILayout.Width(70));
GUILayout.Label("km", GUILayout.ExpandWidth(false));
GUILayout.EndHorizontal();
if (GUILayout.Button(Localizer.Format("#MechJeb_RZplan_button3")))//"Intercept with Hohmann transfer"
{
double UT;
Vector3d dV = OrbitalManeuverCalculator.DeltaVAndTimeForHohmannTransfer(orbit, core.target.TargetOrbit, vesselState.time, out UT);
vessel.RemoveAllManeuverNodes();
vessel.PlaceManeuverNode(orbit, dV, UT);
}
if (GUILayout.Button(Localizer.Format("#MechJeb_RZplan_button4")))//"Match velocities at closest approach"
{
double UT = closestApproachTime;
Vector3d dV = OrbitalManeuverCalculator.DeltaVToMatchVelocities(orbit, UT, core.target.TargetOrbit);
vessel.RemoveAllManeuverNodes();
vessel.PlaceManeuverNode(orbit, dV, UT);
}
if (GUILayout.Button(Localizer.Format("#MechJeb_RZplan_button5")))//"Get closer"
{
double UT = vesselState.time;
Vector3d dV = OrbitalManeuverCalculator.DeltaVToInterceptAtTime(orbit, UT, core.target.TargetOrbit, 100, 10);
vessel.RemoveAllManeuverNodes();
vessel.PlaceManeuverNode(orbit, dV, UT);
}
if (core.node != null)
{
if (vessel.patchedConicSolver.maneuverNodes.Any() && !core.node.enabled)
{
if (GUILayout.Button(Localizer.Format("#MechJeb_RZplan_button6")))//"Execute next node"
{
core.node.ExecuteOneNode(this);
}
if (vessel.patchedConicSolver.maneuverNodes.Count > 1)
{
if (GUILayout.Button(Localizer.Format("#MechJeb_RZplan_button7")))//"Execute all nodes"
{
core.node.ExecuteAllNodes(this);
}
}
}
else if (core.node.enabled)
{
if (GUILayout.Button(Localizer.Format("#MechJeb_RZplan_button8")))//"Abort node execution"
{
core.node.Abort();
}
}
GUILayout.BeginHorizontal();
core.node.autowarp = GUILayout.Toggle(core.node.autowarp, Localizer.Format("#MechJeb_RZplan_checkbox"), GUILayout.ExpandWidth(true)); //"Auto-warp"
GUILayout.Label(Localizer.Format("#MechJeb_RZplan_label9"), GUILayout.ExpandWidth(false)); //"Tolerance:"
core.node.tolerance.text = GUILayout.TextField(core.node.tolerance.text, GUILayout.Width(35), GUILayout.ExpandWidth(false));
if (GUILayout.Button("+", GUILayout.ExpandWidth(false)))
{
core.node.tolerance.val += 0.1;
}
if (GUILayout.Button("-", GUILayout.ExpandWidth(false)))
{
core.node.tolerance.val -= core.node.tolerance.val > 0.1 ? 0.1 : 0.0;
}
if (GUILayout.Button("R", GUILayout.ExpandWidth(false)))
{
core.node.tolerance.val = 0.1;
}
GUILayout.Label("m/s", GUILayout.ExpandWidth(false));
GUILayout.EndHorizontal();
}
GUILayout.EndVertical();
base.WindowGUI(windowID);
}
void MakeNodeForOperation(Orbit o, double UT)
{
Vector3d dV = Vector3d.zero;
double bodyRadius = o.referenceBody.Radius;
switch (operation)
{
case Operation.CIRCULARIZE:
dV = OrbitalManeuverCalculator.DeltaVToCircularize(o, UT);
break;
case Operation.ELLIPTICIZE:
dV = OrbitalManeuverCalculator.DeltaVToEllipticize(o, UT, newPeA + bodyRadius, newApA + bodyRadius);
break;
case Operation.PERIAPSIS:
dV = OrbitalManeuverCalculator.DeltaVToChangePeriapsis(o, UT, newPeA + bodyRadius);
break;
case Operation.APOAPSIS:
dV = OrbitalManeuverCalculator.DeltaVToChangeApoapsis(o, UT, newApA + bodyRadius);
break;
case Operation.INCLINATION:
dV = OrbitalManeuverCalculator.DeltaVToChangeInclination(o, UT, newInc);
break;
case Operation.PLANE:
if (timeReference == TimeReference.REL_ASCENDING)
{
dV = OrbitalManeuverCalculator.DeltaVAndTimeToMatchPlanesAscending(o, core.target.Orbit, UT, out UT);
}
else
{
dV = OrbitalManeuverCalculator.DeltaVAndTimeToMatchPlanesDescending(o, core.target.Orbit, UT, out UT);
}
break;
case Operation.TRANSFER:
dV = OrbitalManeuverCalculator.DeltaVAndTimeForHohmannTransfer(o, core.target.Orbit, UT, out UT);
break;
case Operation.MOON_RETURN:
dV = OrbitalManeuverCalculator.DeltaVAndTimeForMoonReturnEjection(o, UT, o.referenceBody.referenceBody.Radius + moonReturnAltitude, out UT);
break;
case Operation.COURSE_CORRECTION:
CelestialBody targetBody = core.target.Target as CelestialBody;
if (targetBody != null)
{
dV = OrbitalManeuverCalculator.DeltaVAndTimeForCheapestCourseCorrection(o, UT, core.target.Orbit, targetBody, targetBody.Radius + courseCorrectFinalPeA, out UT);
}
else
{
dV = OrbitalManeuverCalculator.DeltaVAndTimeForCheapestCourseCorrection(o, UT, core.target.Orbit, out UT);
}
break;
case Operation.INTERPLANETARY_TRANSFER:
dV = OrbitalManeuverCalculator.DeltaVAndTimeForInterplanetaryTransferEjection(o, UT, core.target.Orbit, true, out UT);
break;
case Operation.LAMBERT:
dV = OrbitalManeuverCalculator.DeltaVToInterceptAtTime(o, UT, core.target.Orbit, UT + interceptInterval);
break;
case Operation.KILL_RELVEL:
dV = OrbitalManeuverCalculator.DeltaVToMatchVelocities(o, UT, core.target.Orbit);
break;
}
vessel.PlaceManeuverNode(o, dV, UT);
}
void MakeNodeForOperation(Orbit o, double UT, Operation op, double newPeA, double newApA, double newInc, double courseCorrectFinalPeA, double moonReturnAltitude, double interceptInterval)
{
Vector3d dV = Vector3d.zero;
double bodyRadius = o.referenceBody.Radius;
// print(newPeA + " - " + this.newPeA + "\n" +
// newApA + " - " + this.newApA + "\n" +
// newInc + " - " + this.newInc + "\n" +
// courseCorrectFinalPeA + " - " + this.courseCorrectFinalPeA + "\n" +
// moonReturnAltitude + " - " + this.moonReturnAltitude + "\n" +
// interceptInterval + " - " + this.interceptInterval);
switch (op)
{
case Operation.CIRCULARIZE:
dV = OrbitalManeuverCalculator.DeltaVToCircularize(o, UT);
break;
case Operation.ELLIPTICIZE:
dV = OrbitalManeuverCalculator.DeltaVToEllipticize(o, UT, newPeA + bodyRadius, newApA + bodyRadius);
break;
case Operation.PERIAPSIS:
dV = OrbitalManeuverCalculator.DeltaVToChangePeriapsis(o, UT, newPeA + bodyRadius);
break;
case Operation.APOAPSIS:
dV = OrbitalManeuverCalculator.DeltaVToChangeApoapsis(o, UT, newApA + bodyRadius);
break;
case Operation.INCLINATION:
dV = OrbitalManeuverCalculator.DeltaVToChangeInclination(o, UT, newInc);
break;
case Operation.PLANE:
if (timeReference == TimeReference.REL_ASCENDING)
{
dV = OrbitalManeuverCalculator.DeltaVAndTimeToMatchPlanesAscending(o, core.target.TargetOrbit, UT, out UT);
}
else
{
dV = OrbitalManeuverCalculator.DeltaVAndTimeToMatchPlanesDescending(o, core.target.TargetOrbit, UT, out UT);
}
break;
case Operation.TRANSFER:
dV = OrbitalManeuverCalculator.DeltaVAndTimeForHohmannTransfer(o, core.target.TargetOrbit, UT, out UT);
break;
case Operation.MOON_RETURN:
dV = OrbitalManeuverCalculator.DeltaVAndTimeForMoonReturnEjection(o, UT, o.referenceBody.referenceBody.Radius + moonReturnAltitude, out UT);
break;
case Operation.COURSE_CORRECTION:
CelestialBody targetBody = core.target.Target as CelestialBody;
if (targetBody != null)
{
dV = OrbitalManeuverCalculator.DeltaVAndTimeForCheapestCourseCorrection(o, UT, core.target.TargetOrbit, targetBody, targetBody.Radius + courseCorrectFinalPeA, out UT);
}
else
{
dV = OrbitalManeuverCalculator.DeltaVAndTimeForCheapestCourseCorrection(o, UT, core.target.TargetOrbit, interceptDistance, out UT);
}
break;
case Operation.INTERPLANETARY_TRANSFER:
dV = OrbitalManeuverCalculator.DeltaVAndTimeForInterplanetaryTransferEjection(o, UT, core.target.TargetOrbit, true, out UT);
break;
case Operation.LAMBERT:
dV = OrbitalManeuverCalculator.DeltaVToInterceptAtTime(o, UT, core.target.TargetOrbit, UT + interceptInterval);
break;
case Operation.KILL_RELVEL:
dV = OrbitalManeuverCalculator.DeltaVToMatchVelocities(o, UT, core.target.TargetOrbit);
break;
case Operation.RESONANT_ORBIT:
dV = OrbitalManeuverCalculator.DeltaVToResonantOrbit(o, UT, (double)resonanceNumerator.val / resonanceDenominator.val);
break;
case Operation.SEMI_MAJOR:
dV = OrbitalManeuverCalculator.DeltaVForSemiMajorAxis(o, UT, newSMA);
break;
case Operation.LAN:
dV = OrbitalManeuverCalculator.DeltaVToShiftLAN(o, UT, core.target.targetLongitude);
break;
}
vessel.PlaceManeuverNode(o, dV, UT);
}
public override void Drive(FlightCtrlState s)
{
if (!core.target.NormalTargetExists)
{
users.Clear();
return;
}
core.node.autowarp = core.target.Distance > 1000; //don't warp when close to target, because warping introduces small perturbations
if (vessel.patchedConicSolver.maneuverNodes.Count > 0)
{
if (!core.node.enabled)
{
core.node.ExecuteAllNodes(this);
}
}
else if (core.target.Distance < 100 && core.target.RelativeVelocity.magnitude < 1)
{
//finished
users.Clear();
core.thrust.ThrustOff();
status = "Successful rendezvous";
}
else if (core.target.Distance < 100)
{
double UT = vesselState.time;
Vector3d dV = OrbitalManeuverCalculator.DeltaVToMatchVelocities(orbit, UT, core.target.Orbit);
vessel.PlaceManeuverNode(orbit, dV, UT);
status = "Within 100m: matching velocities.";
}
else if (core.target.Distance < vesselState.radius / 50)
{
if (orbit.NextClosestApproachDistance(core.target.Orbit, vesselState.time) < 100 &&
orbit.NextClosestApproachTime(core.target.Orbit, vesselState.time) < vesselState.time + 150)
{
//We're close to the target, and on a course that will take us closer. Kill relvel at closest approach
double UT = orbit.NextClosestApproachTime(core.target.Orbit, vesselState.time);
Vector3d dV = OrbitalManeuverCalculator.DeltaVToMatchVelocities(orbit, UT, core.target.Orbit);
vessel.PlaceManeuverNode(orbit, dV, UT);
status = "Planning to match velocities at closest approach.";
}
else
{
//We're not far from the target. Close the distance
double closingSpeed = core.target.Distance / 100;
if (closingSpeed > 100)
{
closingSpeed = 100;
}
double closingTime = core.target.Distance / closingSpeed;
double UT = vesselState.time + 15;
double interceptUT = UT + closingTime;
Vector3d dV = OrbitalManeuverCalculator.DeltaVToInterceptAtTime(orbit, UT, core.target.Orbit, interceptUT, 10);
vessel.PlaceManeuverNode(orbit, dV, UT);
status = "Close to target: plotting intercept over " + closingTime.ToString("F0") + "s";
}
}
else if (orbit.NextClosestApproachDistance(core.target.Orbit, vesselState.time) < core.target.Orbit.semiMajorAxis / 50)
{
//We're not close to the target, but we're on an approximate intercept course.
//Kill relative velocities at closest approach
double UT = orbit.NextClosestApproachTime(core.target.Orbit, vesselState.time);
Vector3d dV = OrbitalManeuverCalculator.DeltaVToMatchVelocities(orbit, UT, core.target.Orbit);
vessel.PlaceManeuverNode(orbit, dV, UT);
status = "On intercept course. Planning to match velocities at closest approach.";
}
else if (orbit.RelativeInclination(core.target.Orbit) < 0.05 && orbit.eccentricity < 0.05 && orbit.SynodicPeriod(core.target.Orbit) < 5 * orbit.period)
{
//We're not on an intercept course, but we have a circular orbit in the right plane.
//Also we are phasing quickly enough that it won't be too long until an intercept window
//Plot a Hohmann transfer intercept.
double UT;
Vector3d dV = OrbitalManeuverCalculator.DeltaVAndTimeForHohmannTransfer(orbit, core.target.Orbit, vesselState.time, out UT);
vessel.PlaceManeuverNode(orbit, dV, UT);
status = "Planning Hohmann transfer for intercept.";
}
else if (orbit.RelativeInclination(core.target.Orbit) < 0.05 && orbit.eccentricity < 0.05)
{
//We are in a circular orbit in the right plane, but we aren't phasing quickly enough. Move to a better phasing orbit
double lowPhasingRadius = core.target.Orbit.semiMajorAxis / 1.16;
double highPhasingRadius = core.target.Orbit.semiMajorAxis * 1.16;
bool useLowPhasingRadius = (lowPhasingRadius > mainBody.RealMaxAtmosphereAltitude() + 3000 && orbit.semiMajorAxis < core.target.orbit.semiMajorAxis);
double phasingOrbitRadius = (useLowPhasingRadius ? lowPhasingRadius : highPhasingRadius);
if (orbit.ApR < phasingOrbitRadius)
{
double UT1 = vesselState.time + 15;
Vector3d dV1 = OrbitalManeuverCalculator.DeltaVToChangeApoapsis(orbit, UT1, phasingOrbitRadius);
vessel.PlaceManeuverNode(orbit, dV1, UT1);
Orbit transferOrbit = vessel.patchedConicSolver.maneuverNodes[0].nextPatch;
double UT2 = transferOrbit.NextApoapsisTime(UT1);
Vector3d dV2 = OrbitalManeuverCalculator.DeltaVToCircularize(transferOrbit, UT2);
vessel.PlaceManeuverNode(transferOrbit, dV2, UT2);
}
else if (orbit.PeR > phasingOrbitRadius)
{
double UT1 = vesselState.time + 15;
Vector3d dV1 = OrbitalManeuverCalculator.DeltaVToChangePeriapsis(orbit, UT1, phasingOrbitRadius);
vessel.PlaceManeuverNode(orbit, dV1, UT1);
Orbit transferOrbit = vessel.patchedConicSolver.maneuverNodes[0].nextPatch;
double UT2 = transferOrbit.NextPeriapsisTime(UT1);
Vector3d dV2 = OrbitalManeuverCalculator.DeltaVToCircularize(transferOrbit, UT2);
vessel.PlaceManeuverNode(transferOrbit, dV2, UT2);
}
else
{
double UT = orbit.NextTimeOfRadius(vesselState.time, phasingOrbitRadius);
Vector3d dV = OrbitalManeuverCalculator.DeltaVToCircularize(orbit, UT);
vessel.PlaceManeuverNode(orbit, dV, UT);
}
status = "Increasing phasing rate by establishing new phasing orbit at " + MuUtils.ToSI(phasingOrbitRadius - mainBody.Radius, 0) + "m";
}
else if (orbit.RelativeInclination(core.target.Orbit) < 0.05)
{
//We're not on an intercept course. We're in the right plane, but our orbit isn't circular. Circularize.
bool circularizeAtPe;
if (orbit.eccentricity > 1)
{
circularizeAtPe = true;
}
else
{
circularizeAtPe = Math.Abs(orbit.PeR - core.target.Orbit.semiMajorAxis) < Math.Abs(orbit.ApR - core.target.Orbit.semiMajorAxis);
}
double UT;
if (circularizeAtPe)
{
UT = Math.Max(vesselState.time, orbit.NextPeriapsisTime(vesselState.time));
}
else
{
UT = orbit.NextApoapsisTime(vesselState.time);
}
Vector3d dV = OrbitalManeuverCalculator.DeltaVToCircularize(orbit, UT);
vessel.PlaceManeuverNode(orbit, dV, UT);
status = "Circularizing.";
}
else
{
//We're not on an intercept course, and we're not in the right plane. Match planes
bool ascending;
if (orbit.eccentricity < 1)
{
if (orbit.TimeOfAscendingNode(core.target.Orbit, vesselState.time) < orbit.TimeOfDescendingNode(core.target.Orbit, vesselState.time))
{
ascending = true;
}
else
{
ascending = false;
}
}
else
{
if (orbit.AscendingNodeExists(core.target.Orbit))
{
ascending = true;
}
else
{
ascending = false;
}
}
double UT;
Vector3d dV;
if (ascending)
{
dV = OrbitalManeuverCalculator.DeltaVAndTimeToMatchPlanesAscending(orbit, core.target.Orbit, vesselState.time, out UT);
}
else
{
dV = OrbitalManeuverCalculator.DeltaVAndTimeToMatchPlanesDescending(orbit, core.target.Orbit, vesselState.time, out UT);
}
vessel.PlaceManeuverNode(orbit, dV, UT);
status = "Matching planes.";
}
}
public override void Drive(FlightCtrlState s)
{
if (!core.target.NormalTargetExists)
{
users.Clear();
return;
}
core.node.autowarp = core.node.autowarp && core.target.Distance > 1000;
//If we get within the target distance and then next maneuver node is still
//far in the future, delete it and we will create a new one to match velocities immediately.
//This can often happen because the target vessel's orbit shifts slightly when it is unpacked.
if (core.target.Distance < desiredDistance &&
vessel.patchedConicSolver.maneuverNodes.Count > 0 &&
vessel.patchedConicSolver.maneuverNodes[0].UT > vesselState.time + 1)
{
vessel.RemoveAllManeuverNodes();
}
if (vessel.patchedConicSolver.maneuverNodes.Count > 0)
{
//If we have plotted a maneuver, execute it.
if (!core.node.enabled)
{
core.node.ExecuteAllNodes(this);
}
}
else if (core.target.Distance < desiredDistance * 1.05 + 2 &&
core.target.RelativeVelocity.magnitude < 1)
{
//finished
users.Clear();
core.thrust.ThrustOff();
status = Localizer.Format("#MechJeb_RZauto_statu1");//"Successful rendezvous"
}
else if (core.target.Distance < desiredDistance * 1.05 + 2)
{
//We are within the target distance: match velocities
double UT = vesselState.time;
Vector3d dV = OrbitalManeuverCalculator.DeltaVToMatchVelocities(orbit, UT, core.target.TargetOrbit);
vessel.PlaceManeuverNode(orbit, dV, UT);
status = Localizer.Format("#MechJeb_RZauto_statu2", desiredDistance.ToString());//"Within " + + "m: matching velocities."
}
else if (core.target.Distance < vesselState.radius / 25)
{
if (orbit.NextClosestApproachDistance(core.target.TargetOrbit, vesselState.time) < desiredDistance &&
orbit.NextClosestApproachTime(core.target.TargetOrbit, vesselState.time) < vesselState.time + 150)
{
//We're close to the target, and on a course that will take us closer. Kill relvel at closest approach
double UT = orbit.NextClosestApproachTime(core.target.TargetOrbit, vesselState.time);
Vector3d dV = OrbitalManeuverCalculator.DeltaVToMatchVelocities(orbit, UT, core.target.TargetOrbit);
//adjust burn time so as to come to rest at the desired distance from the target:
double approachDistance = orbit.Separation(core.target.TargetOrbit, UT);
double approachSpeed = (orbit.SwappedOrbitalVelocityAtUT(UT) - core.target.TargetOrbit.SwappedOrbitalVelocityAtUT(UT)).magnitude;
if (approachDistance < desiredDistance)
{
UT -= Math.Sqrt(Math.Abs(desiredDistance * desiredDistance - approachDistance * approachDistance)) / approachSpeed;
}
//if coming in hot, stop early to avoid crashing:
if (approachSpeed > 10)
{
UT -= 1;
}
vessel.PlaceManeuverNode(orbit, dV, UT);
status = Localizer.Format("#MechJeb_RZauto_statu3");//"Planning to match velocities at closest approach."
}
else
{
//We're not far from the target. Close the distance
double closingSpeed = core.target.Distance / 100;
if (closingSpeed > 100)
{
closingSpeed = 100;
}
double closingTime = core.target.Distance / closingSpeed;
double UT = vesselState.time + 15;
Vector3d dV = OrbitalManeuverCalculator.DeltaVToInterceptAtTime(orbit, UT, core.target.TargetOrbit, closingTime);
vessel.PlaceManeuverNode(orbit, dV, UT);
status = Localizer.Format("#MechJeb_RZauto_statu4");//"Close to target: plotting intercept"
}
}
else if (orbit.NextClosestApproachDistance(core.target.TargetOrbit, vesselState.time) < core.target.TargetOrbit.semiMajorAxis / 25)
{
//We're not close to the target, but we're on an approximate intercept course.
//Kill relative velocities at closest approach
double UT = orbit.NextClosestApproachTime(core.target.TargetOrbit, vesselState.time);
Vector3d dV = OrbitalManeuverCalculator.DeltaVToMatchVelocities(orbit, UT, core.target.TargetOrbit);
//adjust burn time so as to come to rest at the desired distance from the target:
double approachDistance = (orbit.SwappedAbsolutePositionAtUT(UT) - core.target.TargetOrbit.SwappedAbsolutePositionAtUT(UT)).magnitude;
double approachSpeed = (orbit.SwappedOrbitalVelocityAtUT(UT) - core.target.TargetOrbit.SwappedOrbitalVelocityAtUT(UT)).magnitude;
if (approachDistance < desiredDistance)
{
UT -= Math.Sqrt(Math.Abs(desiredDistance * desiredDistance - approachDistance * approachDistance)) / approachSpeed;
}
//if coming in hot, stop early to avoid crashing:
if (approachSpeed > 10)
{
UT -= 1;
}
vessel.PlaceManeuverNode(orbit, dV, UT);
status = Localizer.Format("#MechJeb_RZauto_statu5");//"On intercept course. Planning to match velocities at closest approach."
}
else if (orbit.RelativeInclination(core.target.TargetOrbit) < 0.05 && orbit.eccentricity < 0.05)
{
//We're not on an intercept course, but we have a circular orbit in the right plane.
double hohmannUT;
Vector3d hohmannDV = OrbitalManeuverCalculator.DeltaVAndTimeForHohmannTransfer(orbit, core.target.TargetOrbit, vesselState.time, out hohmannUT);
double numPhasingOrbits = (hohmannUT - vesselState.time) / orbit.period;
double actualMaxPhasingOrbits = Math.Max(maxPhasingOrbits, 5); // ignore input values that are unreasonably small
if (numPhasingOrbits < actualMaxPhasingOrbits)
{
//It won't be too long until the intercept window. Plot a Hohmann transfer intercept.
vessel.PlaceManeuverNode(orbit, hohmannDV, hohmannUT);
status = Localizer.Format("#MechJeb_RZauto_statu6", numPhasingOrbits.ToString("F2"));//"Planning Hohmann transfer for intercept after " + + " phasing orbits."
}
else
{
//We are in a circular orbit in the right plane, but we aren't phasing quickly enough. Move to a better phasing orbit
double axisRatio = Math.Pow(1 + 1.25 / actualMaxPhasingOrbits, 2.0 / 3.0);
double lowPhasingRadius = core.target.TargetOrbit.semiMajorAxis / axisRatio;
double highPhasingRadius = core.target.TargetOrbit.semiMajorAxis * axisRatio;
bool useLowPhasingRadius = (lowPhasingRadius > mainBody.Radius + mainBody.RealMaxAtmosphereAltitude() + 3000) && (orbit.semiMajorAxis < core.target.TargetOrbit.semiMajorAxis);
double phasingOrbitRadius = (useLowPhasingRadius ? lowPhasingRadius : highPhasingRadius);
if (orbit.ApR < phasingOrbitRadius)
{
double UT1 = vesselState.time + 15;
Vector3d dV1 = OrbitalManeuverCalculator.DeltaVToChangeApoapsis(orbit, UT1, phasingOrbitRadius);
vessel.PlaceManeuverNode(orbit, dV1, UT1);
Orbit transferOrbit = vessel.patchedConicSolver.maneuverNodes[0].nextPatch;
double UT2 = transferOrbit.NextApoapsisTime(UT1);
Vector3d dV2 = OrbitalManeuverCalculator.DeltaVToCircularize(transferOrbit, UT2);
vessel.PlaceManeuverNode(transferOrbit, dV2, UT2);
}
else if (orbit.PeR > phasingOrbitRadius)
{
double UT1 = vesselState.time + 15;
Vector3d dV1 = OrbitalManeuverCalculator.DeltaVToChangePeriapsis(orbit, UT1, phasingOrbitRadius);
vessel.PlaceManeuverNode(orbit, dV1, UT1);
Orbit transferOrbit = vessel.patchedConicSolver.maneuverNodes[0].nextPatch;
double UT2 = transferOrbit.NextPeriapsisTime(UT1);
Vector3d dV2 = OrbitalManeuverCalculator.DeltaVToCircularize(transferOrbit, UT2);
vessel.PlaceManeuverNode(transferOrbit, dV2, UT2);
}
else
{
double UT = orbit.NextTimeOfRadius(vesselState.time, phasingOrbitRadius);
Vector3d dV = OrbitalManeuverCalculator.DeltaVToCircularize(orbit, UT);
vessel.PlaceManeuverNode(orbit, dV, UT);
}
status = Localizer.Format("#MechJeb_RZauto_statu7", numPhasingOrbits.ToString("F1"), maxPhasingOrbits.text, MuUtils.ToSI(phasingOrbitRadius - mainBody.Radius, 0));//"Next intercept window would be <<1>> orbits away, which is more than the maximum of <<2>> phasing orbits. Increasing phasing rate by establishing new phasing orbit at <<3>>m
}
}
else if (orbit.RelativeInclination(core.target.TargetOrbit) < 0.05)
{
//We're not on an intercept course. We're in the right plane, but our orbit isn't circular. Circularize.
bool circularizeAtPe;
if (orbit.eccentricity > 1)
{
circularizeAtPe = true;
}
else
{
circularizeAtPe = Math.Abs(orbit.PeR - core.target.TargetOrbit.semiMajorAxis) < Math.Abs(orbit.ApR - core.target.TargetOrbit.semiMajorAxis);
}
double UT;
if (circularizeAtPe)
{
UT = Math.Max(vesselState.time, orbit.NextPeriapsisTime(vesselState.time));
}
else
{
UT = orbit.NextApoapsisTime(vesselState.time);
}
Vector3d dV = OrbitalManeuverCalculator.DeltaVToCircularize(orbit, UT);
vessel.PlaceManeuverNode(orbit, dV, UT);
status = Localizer.Format("#MechJeb_RZauto_statu8");//"Circularizing."
}
else
{
//We're not on an intercept course, and we're not in the right plane. Match planes
bool ascending;
if (orbit.eccentricity < 1)
{
if (orbit.TimeOfAscendingNode(core.target.TargetOrbit, vesselState.time) < orbit.TimeOfDescendingNode(core.target.TargetOrbit, vesselState.time))
{
ascending = true;
}
else
{
ascending = false;
}
}
else
{
if (orbit.AscendingNodeExists(core.target.TargetOrbit))
{
ascending = true;
}
else
{
ascending = false;
}
}
double UT;
Vector3d dV;
if (ascending)
{
dV = OrbitalManeuverCalculator.DeltaVAndTimeToMatchPlanesAscending(orbit, core.target.TargetOrbit, vesselState.time, out UT);
}
else
{
dV = OrbitalManeuverCalculator.DeltaVAndTimeToMatchPlanesDescending(orbit, core.target.TargetOrbit, vesselState.time, out UT);
}
vessel.PlaceManeuverNode(orbit, dV, UT);
status = Localizer.Format("#MechJeb_RZauto_statu9");//"Matching planes."
}
}
override public void activateAction()
{
base.activateAction();
Vessel vessel = this.scriptModule.vessel;
VesselState vesselState = this.scriptModule.vesselState;
Orbit orbit = this.scriptModule.orbit;
CelestialBody mainBody = this.scriptModule.mainBody;
const double leadTime = 30;
double closestApproachTime = orbit.NextClosestApproachTime(core.target.TargetOrbit, vesselState.time);
if (actionType == 0) //Align planes
{
double UT;
Vector3d dV;
if (orbit.AscendingNodeExists(core.target.TargetOrbit))
{
dV = OrbitalManeuverCalculator.DeltaVAndTimeToMatchPlanesAscending(orbit, core.target.TargetOrbit, vesselState.time, out UT);
}
else
{
dV = OrbitalManeuverCalculator.DeltaVAndTimeToMatchPlanesDescending(orbit, core.target.TargetOrbit, vesselState.time, out UT);
}
vessel.RemoveAllManeuverNodes();
vessel.PlaceManeuverNode(this.scriptModule.orbit, dV, UT);
}
else if (actionType == 1) //Establish new orbit
{
double phasingOrbitRadius = phasingOrbitAltitude + mainBody.Radius;
vessel.RemoveAllManeuverNodes();
if (orbit.ApR < phasingOrbitRadius)
{
double UT1 = vesselState.time + leadTime;
Vector3d dV1 = OrbitalManeuverCalculator.DeltaVToChangeApoapsis(orbit, UT1, phasingOrbitRadius);
vessel.PlaceManeuverNode(orbit, dV1, UT1);
Orbit transferOrbit = vessel.patchedConicSolver.maneuverNodes[0].nextPatch;
double UT2 = transferOrbit.NextApoapsisTime(UT1);
Vector3d dV2 = OrbitalManeuverCalculator.DeltaVToCircularize(transferOrbit, UT2);
vessel.PlaceManeuverNode(transferOrbit, dV2, UT2);
}
else if (orbit.PeR > phasingOrbitRadius)
{
double UT1 = vesselState.time + leadTime;
Vector3d dV1 = OrbitalManeuverCalculator.DeltaVToChangePeriapsis(orbit, UT1, phasingOrbitRadius);
vessel.PlaceManeuverNode(orbit, dV1, UT1);
Orbit transferOrbit = vessel.patchedConicSolver.maneuverNodes[0].nextPatch;
double UT2 = transferOrbit.NextPeriapsisTime(UT1);
Vector3d dV2 = OrbitalManeuverCalculator.DeltaVToCircularize(transferOrbit, UT2);
vessel.PlaceManeuverNode(transferOrbit, dV2, UT2);
}
else
{
double UT = orbit.NextTimeOfRadius(vesselState.time, phasingOrbitRadius);
Vector3d dV = OrbitalManeuverCalculator.DeltaVToCircularize(orbit, UT);
vessel.PlaceManeuverNode(orbit, dV, UT);
}
}
else if (actionType == 2) //Intercept with Hohmann transfer
{
double UT;
Vector3d dV = OrbitalManeuverCalculator.DeltaVAndTimeForHohmannTransfer(orbit, core.target.TargetOrbit, vesselState.time, out UT);
vessel.RemoveAllManeuverNodes();
vessel.PlaceManeuverNode(orbit, dV, UT);
}
else if (actionType == 3) //Match velocities at closest approach
{
double UT = closestApproachTime;
Vector3d dV = OrbitalManeuverCalculator.DeltaVToMatchVelocities(orbit, UT, core.target.TargetOrbit);
vessel.RemoveAllManeuverNodes();
vessel.PlaceManeuverNode(orbit, dV, UT);
}
else if (actionType == 4) //Get closer
{
double UT = vesselState.time;
double interceptUT = UT + 100;
Vector3d dV = OrbitalManeuverCalculator.DeltaVToInterceptAtTime(orbit, UT, core.target.TargetOrbit, interceptUT, 10);
vessel.RemoveAllManeuverNodes();
vessel.PlaceManeuverNode(orbit, dV, UT);
}
this.endAction();
}
