/// <summary>
/// Simple calculation of time base for the transfer assuming both are in circular orbit
/// </summary>
private void ComputeBaseTransferTime()
{
double xferOrbit = 0.5 * (shipRadius + moonRadius) / ge.GetPhysicalScale();
double planetMass = ge.GetMass(planet);
timeHohmann = Mathd.PI * Mathd.Sqrt(xferOrbit * xferOrbit * xferOrbit / planetMass);
}
private void ExecuteTransfer()
{
// Need to account for phasing, rotate ship forward to correct launch point and
// rotate TLI vector. (This assumes circular orbit in the XY plane with the planet at the origin!)
// Should set as a maneuver, but just jump there for demonstration code
double transferTime = tflightFactor * lambertU.GetTMin();
float moonOmega = (float)System.Math.Sqrt(ge.GetMass(planet)) / Mathf.Sqrt(moonRadius * moonRadius * moonRadius);
float shipThetaDeg = (float)(transferTime * moonOmega) * Mathf.Rad2Deg;
Debug.LogFormat("t={0} theta={1} deg. omega={2} rad", transferTime, shipThetaDeg, moonOmega);
// Inclination support. Recompute the transfer using inclination
// @TODO: HACK XY only
Vector3 shipPos = ge.GetPhysicsPosition(spaceship);
Vector3 shipPosPhased = Quaternion.AngleAxis(shipThetaDeg, Vector3.forward) * shipPos;
Vector3 shipVelPhased = Quaternion.AngleAxis(shipThetaDeg, Vector3.forward) * lambertU.GetTransferVelocity();
if (onRails)
{
TransferOnRails(transferTime, shipPosPhased, shipVelPhased, moonOmega);
}
else
{
Debug.LogFormat("tli NBody mode r={0} v={1}", shipPosPhased, shipVelPhased);
ge.UpdatePositionAndVelocity(spaceship, shipPosPhased, shipVelPhased);
}
// remove placeholder ships/orbit visualizers
ge.RemoveBody(shipExitSOI.gameObject);
shipExitSOI.gameObject.SetActive(false);
ge.RemoveBody(shipEnterSOI.gameObject);
shipEnterSOI.gameObject.SetActive(false);
SetOrbitDisplays(false);
ge.SetEvolve(true);
running = true;
}
