/// <summary>
/// Raise a circular orbit by the specified percent
/// - only on-rail is implemented
/// </summary>
/// <param name="percentRaise"></param>
private void NewCircularOrbit(float percentRaise)
{
if (onRails)
{
KeplerSequence keplerSeq = spaceship.GetComponent <KeplerSequence>();
OrbitUniversal orbitU = keplerSeq.GetCurrentOrbit();
// check orbit is circular
if (orbitU.eccentricity < 1E-2)
{
// circular, ok to proceed
OrbitData fromOrbit = new OrbitData(orbitU);
OrbitData toOrbit = new OrbitData(fromOrbit);
toOrbit.a = percentRaise * fromOrbit.a;
const bool rendezvous = false;
OrbitTransfer hohmannXfer = new HohmannXfer(fromOrbit, toOrbit, rendezvous);
keplerSeq.RemoveFutureSegments();
keplerSeq.AddManeuvers(hohmannXfer.GetManeuvers());
}
}
else
{
// assume we're in orbit around the moon
OrbitData orbitData = new OrbitData();
orbitData.SetOrbitForVelocity(spaceship, moonBody);
OrbitData toOrbit = new OrbitData(orbitData);
toOrbit.a = percentRaise * orbitData.a;
const bool rendezvous = false;
OrbitTransfer hohmannXfer = new HohmannXfer(orbitData, toOrbit, rendezvous);
ge.AddManeuvers(hohmannXfer.GetManeuvers());
}
}
// Update is called once per frame
void Update()
{
if (Input.GetKeyUp(KeyCode.H))
{
OrbitData shipOrbit = new OrbitData();
shipOrbit.SetOrbitForVelocity(shipNbody, centerNbody);
OrbitData targetOrbit = new OrbitData();
targetOrbit.SetOrbitForVelocity(targetNbody, centerNbody);
// determine the transfer
orbitTransfer = new HohmannXfer(shipOrbit, targetOrbit, rendezvous);
// If this is a ship with a Kepler sequence take the maneuvers and add them as KeplerSequence elements
// This allows the transfer to be time-reversible if the whole scene is on rails.
if (keplerSeq != null)
{
keplerSeq.AddManeuvers(orbitTransfer.GetManeuvers());
}
else
{
// Nbody evolution (or plain onRails w/o KeplerSequence) use maneuvers
foreach (Maneuver m in orbitTransfer.GetManeuvers())
{
GravityEngine.Instance().AddManeuver(m);
}
}
// Maneuver markers
if (markerPrefab != null)
{
foreach (Maneuver m in orbitTransfer.GetManeuvers())
{
// set maneuver position marker
GameObject marker = Instantiate(markerPrefab, centerNbody.gameObject.transform, true);
marker.transform.position = m.physPosition.ToVector3();
markers.Add(marker);
m.onExecuted = RemoveMarker;
}
}
}
if (Input.GetKeyUp(KeyCode.C))
{
// clear maneuvers
GravityEngine.Instance().ClearManeuvers();
// delete on rails maneuvers
if (keplerSeq != null)
{
keplerSeq.RemoveManeuvers(orbitTransfer.GetManeuvers());
}
foreach (GameObject marker in markers)
{
Destroy(marker);
}
markers.Clear();
}
// optionally report time to next maneuver
// for now just do first maneuver
if ((timeToManeuverText != null) && (orbitTransfer != null))
{
double time = orbitTransfer.GetManeuvers()[0].worldTime - GravityEngine.Instance().GetPhysicalTime();
timeToManeuverText.text = string.Format("Time to Next Maneuver = {0:0.00}", time);
}
}
/// <summary>
/// Circularize around Moon
/// - currently only onRails is implemented
/// </summary>
private void CircularizeAroundMoon()
{
// check ship is on segment where it near Moon
if (onRails)
{
KeplerSequence keplerSeq = spaceship.GetComponent <KeplerSequence>();
OrbitUniversal orbitU = keplerSeq.GetCurrentOrbit();
if (orbitU.centerNbody == moonBody)
{
// in orbit around the moon - do circularization
OrbitData orbitData = new OrbitData(orbitU);
OrbitTransfer circularizeXfer = new CircularizeXfer(orbitData);
keplerSeq.RemoveFutureSegments();
keplerSeq.AddManeuvers(circularizeXfer.GetManeuvers());
}
}
else
{
// assume we're in orbit around the moon
OrbitData orbitData = new OrbitData();
orbitData.SetOrbitForVelocity(spaceship, moonBody);
OrbitTransfer circularizeXfer = new CircularizeXfer(orbitData);
ge.AddManeuvers(circularizeXfer.GetManeuvers());
}
}
// Update is called once per frame
void Update()
{
if (Input.GetKeyUp(KeyCode.C))
{
OrbitData currentOrbit = new OrbitData();
currentOrbit.SetOrbitForVelocity(shipNbody, centerNbody);
// circularize the orbit
OrbitTransfer t = new CircularizeXfer(currentOrbit);
// If this is a ship with a Kepler sequence take the maneuvers and add them as KeplerSequence elements
// This allows the transfer to be time-reversible if the whole scene is on rails.
if (keplerSeq != null)
{
keplerSeq.AddManeuvers(t.GetManeuvers());
}
else
{
// Nbody evolution (or plain onRails w/o KeplerSequence) use maneuvers
GravityEngine.Instance().AddManeuver(t.GetManeuvers()[0]);
}
}
else if (Input.GetKeyDown(KeyCode.R))
{
// return orbit to GravityEngine control (go Off-Rails)
if (keplerSeq != null)
{
keplerSeq.AppendReturnToGE(GravityEngine.Instance().GetPhysicalTime(), shipNbody);
}
}
else if (Input.GetKeyDown(KeyCode.W))
{
// return orbit to GravityEngine control (go Off-Rails)
GravityEngine.Instance().ApplyImpulse(shipNbody, Vector3.up);
}
}
/// <summary>
/// Raise a circular orbit by the specified percent
/// - only on-rail is implemented
/// </summary>
/// <param name="percentRaise"></param>
private void NewCircularOrbit(float percentRaise)
{
KeplerSequence keplerSeq = spaceship.GetComponent <KeplerSequence>();
OrbitUniversal orbitU = keplerSeq.GetCurrentOrbit();
// check orbit is circular
if (orbitU.eccentricity < 1E-2)
{
// circular, ok to proceed
OrbitData fromOrbit = new OrbitData(orbitU);
OrbitData toOrbit = new OrbitData(fromOrbit);
toOrbit.a = percentRaise * fromOrbit.a;
const bool rendezvous = false;
OrbitTransfer hohmannXfer = new HohmannXfer(fromOrbit, toOrbit, rendezvous);
keplerSeq.RemoveFutureSegments();
keplerSeq.AddManeuvers(hohmannXfer.GetManeuvers());
}
}
