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Find path to actor

flowchart LR
  Quest[Quest sets ObjectiveActor] --> Input[Player input or auto]
  Input --> WC[Waypoint Component]
  WC --> Nav[Nav mesh path]
  Nav --> Vis[Spawn or Spline visuals]

Blueprint

Event InputAction FindObjective
  → Get Waypoint Component (from player)
  → Find Path to Actor
      Target Actor: ObjectiveActor variable

Toggle off trail:

Deactivate on Waypoint Component
  — or clear target and call internal finish via new path call

C++

void AMyCharacter::ShowPathToObjective(AActor* Objective)
{
  if (WaypointComponent && Objective)
  {
    WaypointComponent->FindPathToActor(Objective);
  }
}

For a Scene Component marker (e.g. arrow on a moving platform):

WaypointComponent->FindPathToComponent(TargetArrow);

Auto refresh

Target behavior	Settings
Static objective	Tick Time = `0`, call once
Moving NPC	Tick Method = Time, Tick Time = `0.25`–`0.5`