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

Assets/External/AstarPathfindingProject/Editor/CustomGraphEditorAttribute.cs

@@ -0,0 +1,19 @@
+namespace Pathfinding {
+	/// <summary>Added to editors of custom graph types</summary>
+	[System.AttributeUsage(System.AttributeTargets.All, Inherited = false, AllowMultiple = true)]
+	public class CustomGraphEditorAttribute : System.Attribute {
+		/// <summary>Graph type which this is an editor for</summary>
+		public System.Type graphType;
+
+		/// <summary>Name displayed in the inpector</summary>
+		public string displayName;
+
+		/// <summary>Type of the editor for the graph</summary>
+		public System.Type editorType;
+
+		public CustomGraphEditorAttribute (System.Type t, string displayName) {
+			graphType = t;
+			this.displayName = displayName;
+		}
+	}
+}