Need help with null reference exception

Hi guys, hope this is the right place to post this, I see others with similar problems but can't seem to figure that out in terms of my code. I am trying to make a knife spawn on the right hand side of the right hand side of the screen.

I have the following error:

NullReferenceException: Object reference not set to an instance of an object
Parallaxer.Shift () (at Assets/scripts/Parallaxer.cs:134)
Parallaxer.Update () (at Assets/scripts/Parallaxer.cs:88)

This is my code

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class Parallaxer : MonoBehaviour
6. {
7.  
8.     class PoolObject
9.     {
10.         public Transform transform;
11.         public bool inUse;
12.         public PoolObject(Transform t)
13.         {
14.             transform = t;
15.         }
16.         public void Use()
17.         {
18.             inUse = true;
19.         }
20.         public void Dispose()
21.         {
22.             inUse = false;
23.         }
24.     }
25.  
26.     [System.Serializable]
27.     public struct YSpawnRange
28.     {
29.         public float min;
30.         public float max;
31.     }
32.  
33.  
34.     public GameObject Prefab;
35.     public int poolSize;
36.     public float shiftSpeed; //how fast the object is moving
37.     public float spawnRate; //how often it spawns
38.  
39.     public YSpawnRange ySpawnRange;
40.     public Vector3 defaultSpawnPos; //its starting position
41.     public bool spawnImmediate; //whether it will spawn immediately
42.     public Vector3 immediateSpawnPos; //the immediate spawn position
43.     public Vector2 targetAspectRatio; //target aspect ratio, accessibility stuff
44.  
45.     float spawnTimer;
46.     float targetAspect;
47.     PoolObject[] poolObjects;
48.     GameManager game;
49.  
50.     void Awake() //for initialisation
51.     {
52.  
53.     }
54.  
55.     void Start() //initialisate game
56.     {
57.         game = GameManager.Instance;
58.     }
59.  
60.     void OnEnable()
61.     {
62.         GameManager.GameOverConfirmed += GameOverConfirmed;
63.     }
64.  
65.     void OnDisable()
66.     {
67.         GameManager.GameOverConfirmed -= GameOverConfirmed;
68.     }
69.  
70.     void GameOverConfirmed()
71.     {
72.         for(int i = 0; i < poolObjects.Length; i++)
73.         {
74.             poolObjects[i].Dispose();
75.             poolObjects[i].transform.position = Vector3.one * 1000; //off screen
76.         }
77.  
78.         if (spawnImmediate)
79.         {
80.             SpawnImmediate();
81.         }
82.     }
83.  
84.     void Update()
85.     {
86.         if (game.GameOver) return;
87.  
88.         Shift();
89.         spawnTimer += Time.deltaTime;
90.         if (spawnTimer > spawnRate)
91.         {
92.             Spawn();
93.             spawnTimer = 0;
94.         }
95.     }
96.  
97.     void Configure()
98.     {
99.         targetAspect = targetAspectRatio.x / targetAspectRatio.y;
100.         poolObjects = new PoolObject[poolSize];
101.         for (int i = 0; i < poolObjects.Length; i++)
102.         {
103.             GameObject go = Instantiate(Prefab) as GameObject;
104.             Transform t = go.transform;
105.             t.SetParent(transform); //has the parent of object script is linked to
106.             t.position = Vector3.one * 1000; //offscreen again to avoid user seeing it
107.             poolObjects[i] = new PoolObject(t);
108.         }
109.     }
110.  
111.     void Spawn()
112.     {
113.         Transform t = GetPoolObject();
114.         if (t == null) return; //true means pool size is too small
115.         Vector3 pos = Vector3.zero;
116.         pos.x = defaultSpawnPos.x;
117.         pos.y = Random.Range(ySpawnRange.min, ySpawnRange.max);
118.         t.position = pos;
119.     }
120.  
121.     void SpawnImmediate()//two objects to avoid gaps between objects
122.     {
123.         Transform t = GetPoolObject();
124.         if (t == null) return; //true means pool size is too small
125.         Vector3 pos = Vector3.zero;
126.         pos.x = immediateSpawnPos.x;
127.         pos.y = Random.Range(ySpawnRange.min, ySpawnRange.max);
128.         t.position = pos;
129.         Spawn();
130.     }
131.  
132.     void Shift()
133.     {
134.         for (int i = 0; i < poolObjects.Length; i++)
135.         {
136.             poolObjects[i].transform.localPosition += -Vector3.right * shiftSpeed * Time.deltaTime;
137.             CheckDisposeObject(poolObjects[i]); //checking if the position is less than spawn position
138.         }
139.     }
140.  
141.     void CheckDisposeObject(PoolObject poolObject)
142.     {
143.         if (poolObject.transform.position.x < -defaultSpawnPos.x) //should spawn offscreen so assume negative x is out of sight so can be removed
144.         {
145.             poolObject.Dispose();
146.             poolObject.transform.position = Vector3.one * 1000; //high value the user wont see
147.         }
148.     }
149.  
150.     Transform GetPoolObject()
151.     {
152.         for (int i = 0; i < poolObjects.Length; i++)
153.         {
154.             if (!poolObjects[i].inUse)
155.             {
156.                 poolObjects[i].Use();
157.                 return poolObjects[i].transform;
158.             }
159.         }
160.         return null;
161.     }
162. }
163.  

Here are my inspector screens etc:




Anyone got any ideas?

 

you instantiate the array "pooledObjects" in Configure... you dont appear to ever call that function. Then in Update you call Shift, which attempts to access an attribute of that array that doesn't exist.

did you miss adding configure in Awake/Start?

 

Oh my god... that was it haha, thank you very much can't believe I missed that for so long..