[Player] Add AI Pathfinding on a 2D grid to the player character

Assets/External/AstarPathfindingProject/ExampleScenes/ExampleScripts/MineBotAI.cs

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+using UnityEngine;
+
+namespace Pathfinding.Examples {
+	/// <summary>
+	/// AI controller specifically made for the spider robot.
+	/// Deprecated: This script has been replaced by Pathfinding.Examples.MineBotAnimation. Any uses of this script in the Unity editor will be automatically replaced by one AIPath component and one MineBotAnimation component.
+	/// </summary>
+	[RequireComponent(typeof(Seeker))]
+	[System.Obsolete("This script has been replaced by Pathfinding.Examples.MineBotAnimation. Any uses of this script in the Unity editor will be automatically replaced by one AIPath component and one MineBotAnimation component.")]
+	[HelpURL("http://arongranberg.com/astar/docs/class_pathfinding_1_1_examples_1_1_mine_bot_a_i.php")]
+	public class MineBotAI : AIPath {
+		/// <summary>
+		/// Animation component.
+		/// Should hold animations "awake" and "forward"
+		/// </summary>
+		public Animation anim;
+
+		/// <summary>Minimum velocity for moving</summary>
+		public float sleepVelocity = 0.4F;
+
+		/// <summary>Speed relative to velocity with which to play animations</summary>
+		public float animationSpeed = 0.2F;
+
+		/// <summary>
+		/// Effect which will be instantiated when end of path is reached.
+		/// See: OnTargetReached
+		/// </summary>
+		public GameObject endOfPathEffect;
+
+#if UNITY_EDITOR
+		protected override int OnUpgradeSerializedData (int version, bool unityThread) {
+			if (unityThread) {
+				var components = gameObject.GetComponents<Component>();
+				int index = System.Array.IndexOf(components, this);
+				foreach (System.Type newType in new [] { typeof(AIPath), typeof(MineBotAnimation) }) {
+					var newComp = gameObject.AddComponent(newType);
+					foreach (var field in newComp.GetType().GetFields(System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.Public)) {
+						var oldField = this.GetType().GetField(field.Name);
+						try {
+							if (oldField != null) field.SetValue(newComp, oldField.GetValue(this));
+						} catch (System.Exception e) {
+							Debug.LogError("Failed to upgrade some fields.\n" + e);
+						}
+					}
+					for (int i = components.Length - 1; i > index; i--) UnityEditorInternal.ComponentUtility.MoveComponentUp(newComp);
+				}
+				GameObject.DestroyImmediate(this);
+				return 0;
+			} else {
+				return base.OnUpgradeSerializedData(version, unityThread);
+			}
+		}
+#endif
+	}
+}