public void CreatePickup(GameObject gunObj)
    {
        GunPickup item = Instantiate(gunPickupPrefab).GetComponent <GunPickup>();

        item.transform.position = RandomlySpawnOnNavMesh.RandomPoint();
        item.gunObj             = gunObj.gameObject;
    }
 private void Awake()
 {
     instance = this;
     RandomlySpawnOnNavMesh.Radius = radius;
 }