Iterating over members of a Layer?

Questions & Answers
1

I hope I'm being oblivious, but is there a way to iterate over all the members of a Layer? I'd like to linecast at each one.

If not, what is the usual way to keep or dynamically create a collection of gameobjects for frequent iteration - Line of Site calculations in this case. Store them in a Singleton?

thanks.

2

There is a function to get all game objects with a certain Tag, but not a corresponding one for a given Layer.

Probably the easiest would be to have each item add and remove itself from a static list when it is created and destroyed (or a non-static list in a singleton).

e.g.

public class MyLinecastTarget : MonoBehaviour
{
  public static List<MyLinecastTarget> activeTargets = new List<MyLinecastTarget>();

  void OnEnable()
  {
    activeTargets.Add( this );
  }

  void OnDisable()
  {
    activeTargets.Remove( this );
  }
}