void begin_launch(Transform spawn_transform)
{
LaunchInProgress = true;
vessel_loaded = false;
FlightCameraOverride.AnchorForSeconds(FlightCameraOverride.Mode.Hold,
FlightGlobals.ActiveVessel.transform, 1);
}
IEnumerable push_and_spin_launched_vessel(Vector3 dV)
{
FlightCameraOverride.UpdateDurationSeconds(1);
var startP = part.Rigidbody.worldCenterOfMass;
var startAV = part.Rigidbody.angularVelocity;
var startAVm = startAV.sqrMagnitude;
var vel = (Vector3d)part.Rigidbody.velocity;
vel += Vector3d.Cross(startAV, launched_vessel.CoM - startP);
if (!dV.IsZero())
{
//conserve momentum
var hM = vessel.GetTotalMass();
var lM = launched_vessel.GetTotalMass();
var lvel = dV * hM / (hM + lM);
vel += lvel;
part.Rigidbody.AddForce(-lvel * lM, ForceMode.Impulse);
}
launched_vessel.SetWorldVelocity(vel);
for (int i = 0; i < 10; i++)
{
//this is a hack for incorrect VelocityChange mode (or whatever causing this);
//if the startAV is applied once, the resulting vessel.angularVelocity is 2-3 times bigger
var deltaAV = startAV - launched_vessel.transform.rotation * launched_vessel.angularVelocity;
var deltaAVm = deltaAV.sqrMagnitude;
if (deltaAVm < 1e-5)
{
break;
}
var av = deltaAVm > startAVm?deltaAV.ClampMagnitudeH(startAVm *Mathf.Sqrt(1 / deltaAVm)) : deltaAV / 3;
var CoM = launched_vessel.CoM;
foreach (Part p in launched_vessel.Parts)
{
if (p.Rigidbody != null)
{
p.Rigidbody.AddTorque(av, ForceMode.VelocityChange);
p.Rigidbody.AddForce(Vector3.Cross(av, p.Rigidbody.worldCenterOfMass - CoM), ForceMode.VelocityChange);
}
}
FlightCameraOverride.UpdateDurationSeconds(1);
yield return(null);
FlightCameraOverride.UpdateDurationSeconds(1);
yield return(null);
}
}
public IEnumerator <YieldInstruction> SpawnShipConstructToGround(ShipConstruct construct,
Transform spawn_transform,
Vector3 spawn_offset,
Callback <Vessel> on_vessel_positioned = null,
Callback <Vessel> on_vessel_loaded = null,
Callback <Vessel> on_vessel_off_rails = null,
Callback <Vessel> on_vessel_launched = null,
int easing_frames = 0)
{
begin_launch(spawn_transform);
PutShipToGround(construct, spawn_transform, spawn_offset);
ShipConstruction.AssembleForLaunch(construct,
vessel.landedAt, vessel.displaylandedAt, part.flagURL,
FlightDriver.FlightStateCache,
new VesselCrewManifest());
launched_vessel = FlightGlobals.Vessels[FlightGlobals.Vessels.Count - 1];
on_vessel_positioned?.Invoke(launched_vessel);
while (!launched_vessel.loaded)
{
FlightCameraOverride.UpdateDurationSeconds(1);
yield return(new WaitForFixedUpdate());
}
on_vessel_loaded?.Invoke(launched_vessel);
while (launched_vessel.packed)
{
launched_vessel.precalc.isEasingGravity = true;
launched_vessel.situation = Vessel.Situations.PRELAUNCH;
stabilize_launched_vessel(0);
FlightCameraOverride.UpdateDurationSeconds(1);
yield return(new WaitForFixedUpdate());
}
on_vessel_off_rails?.Invoke(launched_vessel);
if (easing_frames > 0)
{
foreach (var n in stabilize_launched_vessel(easing_frames))
{
FlightCameraOverride.UpdateDurationSeconds(1);
yield return(new WaitForFixedUpdate());
}
}
on_vessel_launched?.Invoke(launched_vessel);
StageManager.BeginFlight();
end_launch();
}
IEnumerable <YieldInstruction> launch_moving_vessel(Transform spawn_transform,
Vector3 spawn_offset,
Quaternion spawn_rot_offset,
Vector3 dV,
Callback <Vessel> on_vessel_loaded,
Callback <Vessel> on_vessel_off_rails,
Callback <Vessel> on_vessel_launched)
{
var vsl_colliders = new List <Collider>();
disable_vsl_colliders(launched_vessel, vsl_colliders);
FlightCameraOverride.UpdateDurationSeconds(1);
if (vessel.LandedOrSplashed)
{
while (launched_vessel.packed)
{
if (launched_vessel == null)
{
goto end;
}
launched_vessel.situation = Vessel.Situations.PRELAUNCH;
run_on_vessel_loaded(on_vessel_loaded);
FlightCameraOverride.UpdateDurationSeconds(1);
try
{
launched_vessel.SetPosition(spawn_transform.TransformPointUnscaled(spawn_offset));
launched_vessel.SetRotation(spawn_transform.rotation * spawn_rot_offset);
}
catch (Exception e)
{ Utils.Log("Exception occured during launched_vessel.SetPosition/Rotation call. Ignoring it:\n{}", e.StackTrace); }
launched_vessel.GoOffRails();
yield return(new WaitForFixedUpdate());
}
if (launched_vessel == null)
{
goto end;
}
launched_vessel.SetPosition(spawn_transform.TransformPointUnscaled(spawn_offset));
launched_vessel.SetRotation(spawn_transform.rotation * spawn_rot_offset);
}
else
{
//hold the vessel inside the hangar until unpacked
while (launched_vessel.packed)
{
if (launched_vessel == null)
{
goto end;
}
run_on_vessel_loaded(on_vessel_loaded);
FlightCameraOverride.UpdateDurationSeconds(1);
try
{
launched_vessel.SetPosition(spawn_transform.TransformPointUnscaled(spawn_offset));
launched_vessel.SetRotation(spawn_transform.rotation * spawn_rot_offset);
}
catch (Exception e)
{ Utils.Log("Exception occured during launched_vessel.SetPosition/Rotation call. Ignoring it:\n{}", e.StackTrace); }
yield return(new WaitForFixedUpdate());
}
if (launched_vessel == null)
{
goto end;
}
launched_vessel.SetPosition(spawn_transform.TransformPointUnscaled(spawn_offset));
launched_vessel.SetRotation(spawn_transform.rotation * spawn_rot_offset);
}
launched_vessel.situation = vessel.situation;
FlightGlobals.ForceSetActiveVessel(launched_vessel);
on_vessel_off_rails?.Invoke(launched_vessel);
enable_vsl_colliders(vsl_colliders);
launched_vessel.IgnoreGForces(10);
foreach (var _ in push_and_spin_launched_vessel(spawn_transform.TransformDirection(dV)))
{
yield return(null);
launched_vessel.IgnoreGForces(10);
}
on_vessel_launched?.Invoke(launched_vessel);
end:
{
enable_vsl_colliders(vsl_colliders);
yield break;
}
}