CinmemachineSmartCamera

  public class CinemachineSmartCamera : SmartCamera
    {
        public CinemachineVirtualCamera VirtualCamera;

        [ContextMenu("Activate")]
        public override void Activate()
        {
            VirtualCamera.MoveToTopOfPrioritySubqueue();
            base.Activate();
        }

        public override void ClearWatchTarget()=>ClearVCamTarget();

        public override void Watch(Transform target)
        {
            LookAt(target);
            VirtualCamera.LookAt = target;
            TargetFound?.Invoke(target);
        }

        public override Transform LookTarget => VirtualCamera.LookAt;
        public string DisplayName = "";

        public override void LookAt(Transform target)
        {
            //VirtualCamera.PreviousStateIsValid = false;
            if (target != null)
            {
                var t = VirtualCamera.transform;
                var dir = (target.position - t.position).normalized;
                t.forward = dir;
            }
            VirtualCamera.LookAt = target;
        }

        #region Plumbing

        public bool BeingLookedThrough => Brain != null && Brain.ActiveVirtualCamera != null &&
                                          (CinemachineVirtualCamera)Brain.ActiveVirtualCamera == VirtualCamera;

        void ClearVCamTarget()
        {
            if(VirtualCamera.LookAt != null)
                TargetLost?.Invoke(VirtualCamera.LookAt);
            VirtualCamera.LookAt = null;
            VirtualCamera.PreviousStateIsValid = false;

        }

        public override bool IsLive => BeingLookedThrough;

        protected override Transform CameraRoot => VirtualCamera.transform;

        private CinemachineBrain Brain => CinemachineCore.Instance.FindPotentialTargetBrain(VirtualCamera);

        public override string ToString() => Name;

        public override string GetDisplayName()
        {
            return DisplayName;
        }

        #endregion
    }