public void OnBeforeFocusChange(FocusEventData eventData)
{
if (!EnableForce || !TryToVerifyPointerAndController(eventData.Pointer, out var pointer))
{
return;
}
// this should never trigger!
Debug.Assert(pointer != null);
if (eventData.NewFocusedObject != null && eventData.NewFocusedObject.transform.IsChildOf(transform))
{
// if already listed then ignore
if (!_focusers.Add(pointer))
{
return;
}
eventData.Pointer.FocusTarget = this;
var isHoloLens2OrVr = !IsGgvOrDesktopController(eventData.Pointer.Controller);
var tractorBeam = isHoloLens2OrVr ? AttachTractorBeamToPointer(pointer) : null;
switch (ForceState)
{
case State.Root:
case State.Free:
if (!IsGgvOrDesktopController(eventData.Pointer.Controller))
{
Debug.Assert(_activeTractorBeams.Add(tractorBeam));
StartDwell();
}
break;
case State.Dwell:
if (isHoloLens2OrVr)
{
Debug.Assert(_activeTractorBeams.Add(tractorBeam));
}
break;
case State.Manipulation:
case State.Attraction:
break;
default:
throw new ArgumentOutOfRangeException();
}
}
else
{
_focusers.Remove(pointer);
if ((ForceSolver)eventData.Pointer.FocusTarget == this)
{
eventData.Pointer.FocusTarget = null;
}
_activeTractorBeams.Remove(ForceTractorBeam.GetTractorBeamFromPointer(pointer));
}
}
private ForceTractorBeam AttachTractorBeamToPointer(ShellHandRayPointer pointer)
{
return(ForceTractorBeam.AttachToHandRayPointer(pointer, TractionBeamPrefab));
}
