Enable/Disable autopilot

[petersohn]

I tried to explicitly enable or disable the autopilot with the following functions:

bool result = FlightGlobals.ActiveVessel.Autopilot.Enable ();

and

bool result = FlightGlobals.ActiveVessel.Autopilot.Disable ();

They always return true (at least when I tried on a vessel where autopilot is working), but do nothing. Toggling the autopilot with T works as expected. This also works:

FlightGlobals.ActiveVessel.Autopilot.SetMode (mode);

Anyone has any idea what am I missing here?

Edited December 12, 2016 by petersohn

[Diazo]

Not sure what exactly those .Enable and Disable methods do.

To disable SAS is the following I do the following:

FlightGlobals.ActiveVessel.ActionGroups.SetGroup(KSPActionGroup.SAS, false);

To set Stability Assist is:

pm.vessel.ActionGroups.SetGroup(KSPActionGroup.SAS, true);
pm.vessel.Autopilot.SetMode(VesselAutopilot.AutopilotMode.StabilityAssist);
if (pm.vessel == FlightGlobals.ActiveVessel)
{
   MonoBehaviorMethods.setSASUI(0); //You have to set the UI icon manually for some reason.
}

Note that you can only set available modes that have icons visible next to the navball so make sure a high enough level pilot/probe core is along.

D.

[petersohn]

Thanks, that works. Actually, my findings are the following:

If SAS is already enabled, this can be used to set the mode:

FlightGlobals.ActiveVessel.Autopilot.SetMode (mode);

To enable or disable SAS, this have to be used:

FlightGlobals.ActiveVessel.ActionGroups.SetGroup(KSPActionGroup.SAS, value);

To enable SAS and set the mode at the same time, this does not work:

FlightGlobals.ActiveVessel.ActionGroups.SetGroup(KSPActionGroup.SAS, true);
FlightGlobals.ActiveVessel.Autopilot.SetMode (mode);

However, this does:

FlightGlobals.ActiveVessel.ActionGroups.SetGroup(KSPActionGroup.SAS, true);
FlightGlobals.ActiveVessel.Autopilot.Enable (mode);

It seems to be some kind of API bug, which may or may not be fixed in some later update.