B2Action_LaunchSetClass

• Description
  * ===============
  * Opens the school set-class UI so the possessed character can pick which enrolled teen Zois belong to the given class, then assigns the selected Zois to that class on the school entity.
  * ===============
  * Param:
  * S1: Class Id
  * S2: -
  * F1: -
  * F2: -
  * Note:
  * OnInit(): Resolves the school entity from the target's site and parses ClassId from Action.S1.
  * OnPlay(): Sends the open set-class UI packet with the enrolled teen candidates, subscribes to the select/cancel completion events, then pauses the simulation while the UI is open.
  * OnTick(): Nothing; this action waits for the UI callbacks. The pause stops the simulation clock, so this action must never rely on in-game time to finish.
  * OnFinish(): If the open-UI packet was sent, resumes the simulation, unsubscribes from the events and sends the hide-UI packet.
  * OnCanceled(): Same cleanup as OnFinish(), skipped when the cancellation itself comes from a restore (bRestore).
  * OnB2PreBeginPlay(): Cancels the interaction when restored mid-play, because the UI is gone and the selection callbacks no longer exist.

Property	Type	Description	Metadata
SchoolEntityId	FB1EntityId	School entity that owns the class being edited, resolved from the target object's site
ClassId	int32	Zero-based class index the selected Zois are assigned to, parsed from Action.S1
bSendPacket	bool	Whether the open-UI packet was actually sent, gating the resume/unsubscribe/hide-UI cleanup
ActionId	FName	Identifier of this action instance (used for interaction tracking and mission time accounting)
State	EB2ActionState	Current lifecycle state of this action
MergeType	EB2ActionMergeType	Merge type flags for this action (e.g. interaction merge, checked in Finish())
Result	EB2InteractionResult	Result of this action once it stops playing (Finish/Failed/Canceled)
SelfEntityId	FB1EntityId	Entity id performing this action
TargetEntityId	FB1EntityId	Entity id targeted by this action
GrabEntityId	FB1EntityId	Entity id grabbed/carried by self entity for this action
NonTargetLocation	FVector	Location used for script/condition context when there is no target entity
Action	FB1ActionInfo	Action table data (S1/S2/F1/F2, script id lists, etc.) driving this instance
TickCalcValue	float	Accumulated tick delta time since this action started ticking
CurrentNotifyIndex	int32	Index into Action.NotifyScriptIds for the next notify script to run
AsyncLoadAnimInfo	TArray	Animations to async-load for this action's start/notify/tick/finish/cancel scripts
AddActionTimeInterval	float	Interval in seconds between OnTickAddActionExecuteTime() calls
AccumAddActionTime	float	Elapsed time accumulator compared against AddActionTimeInterval
StartActionTickTime	int64	Tick timestamp used to measure elapsed action execution time for mission tracking
ActionKey	FB2ActionKey	Key identifying this action's slot/queue within the interaction system
TimeTaskId	FB1TimeTaskId	Id of the scheduled time task used for delayed Determine/Finish
IsForceCancelable	bool	Whether this action is force-cancelable, copied from Action.IsForceCancelable
IsFirstAction	bool	Marks the first action in an interaction sequence; set on actions[0] by FB2InteractionPlayer::LinkActions(), read by FB2ActionPlayer
bMultiFlag	bool	Set by looping actions (PlayAnim, BookRead, Eat, WaitTalkSequence) once a loop iteration completes; read/reset by FB2ActionPlayer to gate multi-interaction selection
TalkInstanceId	FB1TalkInstanceId	Id of the talk instance this action is linked to, set externally by FB2InteractionPlayer::LinkActions()
TalkSubjectEntityId	FB1EntityId	Entity id of the talk subject linked to this action, set externally by FB2InteractionPlayer::LinkActions()/OnTalkSpaceParamChanged()
bIsWaitFinishEvent	bool	Cached copy of Action.IsWaitFinishAction taken at Init(); read directly by FB2ActionPlayer for sequencing (the IsWaitFinishAction() getter instead reads Action.IsWaitFinishAction live)
AutoInsertType	EB2ActionAutoInsertType	Type of action that was auto-inserted before this one (e.g. WalkTo, ChangePosture)