NullReferenceException confusion

Hi, first time posting on the forums. I know the NullReferenceException error is an oldie and I have google searched the forums but I as far I can tell I am intialising. I am creating a finite state machine and am creating a test environment for it by changing colours of spheres in a scene. Each sphere is correspodingly named to an emotion (same names as in the Emotions {}) . To avoid framerate issues I am finding GameObjects in the Start(), then I am initialising the object renderer and adding that to a render varible. I am then adding the render variable to a list. I have clearly misunderstood some aspect of the initialisation process as I get a NullReferenceException at line 20 when I try to add the RCalm to the list and would appreicate some guidance.

I have also tried a simplified approach of RCalm =GameObject.find("Calm").GetCompenent<Renderer>(); and then adding to the list but I am still getting the same error.

Many thanks

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3. using System.Collections.Generic;
4. public enum Emotions { Calm, Fear, Worry, Panic, Resolve, Pain, Surpise, Confusion, Flight, Fight}
5.  
6.  
7. public class EmotionTest : MonoBehaviour {
8.  
9.     public Emotions KrakenEmotions = Emotions.Calm;
10.     public GameObject SCalm, SFear, SWorry, SPanic, SResolve,SPain, SSurprise, SConfusion, SFlight, SFight;
11.     public Renderer  RCalm, RFear, RWorry, RPanic, RResolve,RPain, RSurprise,RConfusion, RFlight, RFight;
12.     //private GameObject[] EmotionArray;
13.     private List<GameObject> EmotionArray;
14.     private List <Renderer> EmoRend;
15.  
16.     // Use this for initialization
17.     void Start () {
18.         SCalm = GameObject.Find ("Calm");
19.         RCalm = SCalm.GetComponent<Renderer> ();
20.         EmoRend.Add (RCalm);
21.         SFear = GameObject.Find ("Fear");
22.         SWorry = GameObject.Find ("Worry");
23.         SPanic = GameObject.Find ("Panic");
24.         SResolve = GameObject.Find ("Resolve");
25.         SPain = GameObject.Find ("Pain");
26.         SSurprise = GameObject.Find ("Surprise");
27.         SConfusion = GameObject.Find ("Confusion");
28.         SFlight = GameObject.Find ("Flight");
29.         SFight = GameObject.Find ("Fight");
30.    
31.         //EmotionArray.Add (SCalm, SFear, SWorry, SPanic, SResolve, SSurprise, SConfusion, SFlight, SFight);
32.  
33.  
34.  
35.         /*
36.         EmotionArray.Add (SCalm);
37.  
38.         EmotionArray.Add (SFear);
39.         EmotionArray.Add (SWorry);
40.         EmotionArray.Add (SPanic);
41.         EmotionArray.Add (SResolve);
42.         EmotionArray.Add (SPain);
43.         EmotionArray.Add (SSurprise);
44.         EmotionArray.Add (SConfusion);
45.         EmotionArray.Add (SFlight);
46.         EmotionArray.Add (SFight);
47.  
48. */

 

You need to allocate the lists first. Like this:

Code (CSharp):

1.     private List<GameObject> EmotionArray = new List<GameObject>();
2.     private List <Renderer> EmoRend = new List<Renderer>();

 

Thank you. Will try that.

 

Error gone much appreicated