◆ NullOrInactive

readonly NullOrInactiveComparer Sisus.NullExtensions.NullOrInactive = new NullOrInactiveComparer()

static

A value against which any object can be compared to determine whether it is null or an Object which is inactive or has been destroyed.

using static Sisus.NullExtensions;
 
public class LookAt : MonoBehaviour{ITrackable}
{
    private ITrackable target;
 
    protected override void Init(ITrackable target) => this.target = target;
 
    private void Update()
    {
        if(target != NullOrInactive)
        {
            transform.LookAt(target.Position);
        }
    }
}