final commit

Assets/Scripts/Misc/NavPoint.cs

@@ -2,13 +2,14 @@
 using System.Collections.Generic;
 using UnityEngine;
 
+[RequireComponent(typeof(BoxCollider))]
 public class NavPoint : MonoBehaviour
 {
     public Vector3 position => gameObject.transform.position;
+    public int PointId => this.GetInstanceID();
     public float FlagDistance { get; private set; }
 
     [HideInInspector]
-    public int? PointId;
     public float DeathAttr = 0;
     public List<Vector3> EnemiesSeen = new List<Vector3>();
     //Here other attributes;