public CameraCrew()
{
mainCamera = Camera.main;
mainLight = GameObject.Find ("Directional Light").GetComponent<Light> ();
mainMusic = GameObject.FindGameObjectWithTag ("Music").GetComponent<WorldMusic> ();
}
// instance constructors
public CameraCrew(Camera cam, Light light, WorldMusic music)
{
mainCamera = cam;
mainLight = light;
mainMusic = music;
}
