2D platformer Tiling Booleans that stop the gameObject's instantiation

Hi This is a script for tililng in a 2D platformer. Basically whenever the camera gets to a certain point a gameObject will instantiate so that the player moves in a seamlessly never ending world. The only part that I'm not really able to understand is the last if and else statements.

Code (CSharp):

1.  if (rightOrLeft > 0)
2. {
3. newBuddy.GetComponent<Tiling>().hasALeftBuddy = true;
4. }
5. else
6. {
7. newBuddy.GetComponent<Tiling>().hasARightBuddy = true;
8. }

I am confused by how the booleans are actually stopping the gameObject from being instantiated on the left or right side. I guess I am having a little trouble making the connection as code seems somewhat abstract.

Code (CSharp):

1.     using UnityEngine;
2.     using System.Collections;
3.  
4.     [RequireComponent (typeof(SpriteRenderer))]
5.  
6.     public class Tiling : MonoBehaviour {
7.  
8.     public int offsetX = 2;
9.  
10.     public bool hasARightBuddy = false;
11.     public bool hasALeftBuddy = false;
12.  
13.     public bool reverseScale = false;
14.  
15.  
16.     private float spriteWidth = 0f;
17.  
18.     private Camera cam;
19.     private Transform myTransform;
20.  
21.     void Awake () {
22.     cam = Camera.main;
23.     myTransform = transform;
24.     }
25.  
26.     // Use this for initialization
27.     void Start () {
28.     SpriteRenderer sRenderer = GetComponent<SpriteRenderer>();
29.     spriteWidth = sRenderer.sprite.bounds.size.x;
30.     }
31.  
32.     // Update is called once per frame
33.     void Update ()
34.     {
35.  
36.  
37.     if (hasALeftBuddy == false || hasARightBuddy == false)
38.     {
39.  
40.     float camHorizontalExtend = cam.orthographicSize * Screen.width/Screen.height;
41.  
42.  
43.     float edgeVisiblePositionRight = (myTransform.position.x + spriteWidth/2) - camHorizontalExtend; //sprite width/2..51.2
44.     //(0 + 51.2 - 26.67315 = 24.52685)
45.     //(102.4 + 51.2 - 26.67315 = 126.92685) etc.. //clone of the myTransform
46.     float edgeVisiblePositionLeft = (myTransform.position.x - spriteWidth/2) + camHorizontalExtend; // (0 - 51.2 + 26.67315 = -24.52685)
47.     // (-102.4 - 51.2 + 26.67315 = -126.92685) etc..//clone of the myTransform
48.  
49.     if (cam.transform.position.x >= edgeVisiblePositionRight - offsetX && hasARightBuddy == false)
50.     {
51.     MakeNewBuddy (1);
52.     hasARightBuddy = true;
53.     }
54.     else if (cam.transform.position.x <= edgeVisiblePositionLeft + offsetX && hasALeftBuddy == false)
55.     {
56.     MakeNewBuddy (-1);
57.     hasALeftBuddy = true;
58.     }
59.     }
60.     }
61.  
62.  
63.     void MakeNewBuddy (int rightOrLeft)
64.     {
65.  
66.     Vector3 newPosition = new Vector3 (myTransform.position.x + spriteWidth * rightOrLeft, myTransform.position.y, myTransform.position.z);
67.  
68.     Transform newBuddy = Instantiate (myTransform, newPosition, myTransform.rotation) as Transform;
69.  
70.  
71.     if (reverseScale == true)
72.     {
73.     newBuddy.localScale = new Vector3 (newBuddy.localScale.x*-1, newBuddy.localScale.y, newBuddy.localScale.z);
74.     }
75.  
76.  
77.     if (rightOrLeft > 0)
78.     {
79.     newBuddy.GetComponent<Tiling>().hasALeftBuddy = true;
80.     }
81.     else
82.     {
83.     newBuddy.GetComponent<Tiling>().hasARightBuddy = true;
84.     }
85.     }
86.     }
87.     }