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

Assets/External/AstarPathfindingProject/Editor/ProceduralGridMoverEditor.cs

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+using UnityEngine;
+using UnityEditor;
+using System.Collections.Generic;
+
+namespace Pathfinding {
+	[CustomEditor(typeof(ProceduralGridMover))]
+	[CanEditMultipleObjects]
+	public class ProceduralGridMoverEditor : EditorBase {
+		GUIContent[] graphLabels = new GUIContent[32];
+
+		protected override void Inspector () {
+			// Make sure the AstarPath object is initialized and the graphs are loaded, this is required to be able to show graph names in the mask popup
+			AstarPath.FindAstarPath();
+
+			for (int i = 0; i < graphLabels.Length; i++) {
+				if (AstarPath.active == null || AstarPath.active.data.graphs == null || i >= AstarPath.active.data.graphs.Length || AstarPath.active.data.graphs[i] == null) {
+					graphLabels[i] = new GUIContent("Graph " + i + (i == 31 ? "+" : ""));
+				} else {
+					graphLabels[i] = new GUIContent(AstarPath.active.data.graphs[i].name + " (graph " + i + ")");
+				}
+			}
+
+			Popup("graphIndex", graphLabels, "Graph");
+			PropertyField("target");
+			PropertyField("updateDistance");
+		}
+	}
+}