update

Packages/com.arongranberg.astar/ExampleScenes~/Scenes/HexagonalTurnBased/TurnBasedDoor.cs

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+using UnityEngine;
+using System.Collections;
+using System.Collections.Generic;
+
+namespace Pathfinding.Examples {
+	/// <summary>Helper script in the example scene 'Turn Based'</summary>
+	[RequireComponent(typeof(Animator))]
+	[RequireComponent(typeof(SingleNodeBlocker))]
+	[HelpURL("https://arongranberg.com/astar/documentation/stable/turnbaseddoor.html")]
+	public class TurnBasedDoor : MonoBehaviour {
+		Animator animator;
+		SingleNodeBlocker blocker;
+
+		bool open;
+
+		void Awake () {
+			animator = GetComponent<Animator>();
+			blocker = GetComponent<SingleNodeBlocker>();
+		}
+
+		void Start () {
+			// Make sure the door starts out blocked
+			blocker.BlockAtCurrentPosition();
+			animator.CrossFade("close", 0.2f);
+		}
+
+		public void Close () {
+			StartCoroutine(WaitAndClose());
+		}
+
+		IEnumerator WaitAndClose () {
+			var selector = new List<SingleNodeBlocker>() { blocker };
+			var node = AstarPath.active.GetNearest(transform.position).node;
+
+			// Wait while there is another SingleNodeBlocker occupying the same node as the door
+			// this is likely another unit which is standing on the door node, and then we cannot
+			// close the door
+			if (blocker.manager.NodeContainsAnyExcept(node, selector)) {
+				// Door is blocked
+				animator.CrossFade("blocked", 0.2f);
+			}
+
+			while (blocker.manager.NodeContainsAnyExcept(node, selector)) {
+				yield return null;
+			}
+
+			open = false;
+			animator.CrossFade("close", 0.2f);
+			blocker.BlockAtCurrentPosition();
+		}
+
+		public void Open () {
+			// Stop WaitAndClose if it is running
+			StopAllCoroutines();
+
+			// Play the open door animation
+			animator.CrossFade("open", 0.2f);
+			open = true;
+
+			// Unblock the door node so that units can traverse it again
+			blocker.Unblock();
+		}
+
+		public void Toggle () {
+			if (open) {
+				Close();
+			} else {
+				Open();
+			}
+		}
+	}
+}