====== LookAt ======
  
  void LookAtPoint(int tid, fixed x, fixed y, fixed z)

Rotates the actor so that it's looking at the point. Takes the actor's [[zdoom>GetActorViewHeight|ViewHeight]] into account.

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  void LookAt(int tid, int target_tid)
  
Rotates the actor so that it's looking at another actor. Takes into account both actors' [[zdoom>GetActorViewHeight|ViewHeights]] to make the actor look at the other actor's head, if the target actor has a CameraHeight, or center, if it doesn't.