Question Issues with Materials change Via script

Greeting to all,

I am desparate for help cause I havent encoured similar error never before. So , please for your assistance.

We have a wall that we want to change color. Below the parent object

Wall(Parent)
>Wall Model ( Gameobject with Two materials each working on each side of wall)
>One Side ( Box Collider as trigger and "Marked" Script)
>Two Side ( Box Collider as trigger and "Marked" Script)
>Top Base(ignore)
>Down Base(ignore)

I have attached to camera two scripts one called "SelectObject" and other "paintWalls"
The issues that I have is that I can change material on TwoSide wall but not in OneSide. Moreover, if I change the order of above childs it works reverse. I can not make it work for booth and I can not see why this happens!

Thanks in advance, scripts below

Marked

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class Marked : MonoBehaviour
6. {
7.     public bool IamMarkedForSelection=false;
8.     public Material[] origiMat;
9.  
10.     public GameObject WallModel;
11.  
12.  
13.  
14.     // Start is called before the first frame update
15.     void Start()
16.     {
17.         origiMat = transform.parent.Find("WallModel").gameObject.GetComponent<MeshRenderer>().materials;
18.         WallModel = transform.parent.Find("WallModel").gameObject;
19.     }
20.  
21.     // Update is called once per frame
22.     void FixedUpdate()
23.     {
24.         if (IamMarkedForSelection == false && !Input.GetMouseButtonDown(0))
25.         {
26.             WallModel.GetComponent<MeshRenderer>().materials = origiMat;
27.         }
28.     }
29.  
30. }
31.  

Select Object

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class SelectObject : MonoBehaviour
6. {
7.     public GameObject targetedObjName;
8.     public GameObject previousGameObject;
9.  
10.     // Start is called before the first frame update
11.     void Start()
12.     {
13.        
14.     }
15.  
16.     private void FixedUpdate()
17.     {
18.         getTargObject();
19.  
20.  
21.     }
22.     // Update is called once per frame
23.     void Update()
24.     {
25.        
26.        
27.     }
28.  
29.     public void getTargObject()
30.     {
31.  
32.         var cam = GetComponent<Camera>();
33.         Ray ray = cam.ScreenPointToRay(Input.mousePosition);
34.         RaycastHit hit;
35.         if (Physics.Raycast(ray, out hit, 1000))
36.         {
37.             ////+
38.             //if we target wall
39.  
40.  
41.  
42.             var nextGameObject = hit.collider.gameObject;
43.             if (nextGameObject != targetedObjName)
44.             {
45.                 previousGameObject = targetedObjName;
46.                 targetedObjName = nextGameObject;
47.                 if (previousGameObject!=null && previousGameObject.tag == "WallSide")
48.                 {
49.                     previousGameObject.GetComponent<Marked>().IamMarkedForSelection = false;
50.                 }
51.                 if(targetedObjName.tag=="WallSide" && targetedObjName != null)
52.                 {
53.                     targetedObjName.GetComponent<Marked>().IamMarkedForSelection = true;
54.                 }
55.  
56.  
57.             }
58.         }
59.  
60.     }
61. }
62.  

PaintWall

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class PaintWalls : MonoBehaviour
6. {
7.     //from here we will grab the components to track Mouse Pos
8.     public SelectObject selectObject;
9.     public GameObject wallTobePainted;
10.  
11.     [SerializeField] public Material materialToPaint;
12.  
13.     [SerializeField] public bool paintOn = false;
14.     public bool paintNextOne = false;
15.  
16.  
17.     public Material[] arrOrigMat;
18.  
19.  
20.  
21.  
22.     // Start is called before the first frame update
23.     void Start()
24.     {
25.         selectObject = GetComponent<SelectObject>();
26.         //arrOrigMat = selectObject.targetedObjName.transform.parent.Find("WallModel").gameObject.GetComponent<MeshRenderer>().materials;
27.     }
28.  
29.     // Update is called once per frame
30.     void FixedUpdate()
31.     {
32.         if (paintOn)
33.         {
34.             var sideOfwall = selectObject.targetedObjName;
35.             if (sideOfwall.CompareTag("WallSide"))
36.             {
37.                
38.                 wallTobePainted = sideOfwall.transform.parent.Find("WallModel").gameObject;
39.                            
40.  
41.                
42.                 if (sideOfwall.name == "OneSide")
43.                 {
44.                     //Preview
45.                     if (selectObject.targetedObjName.GetComponent<Marked>().IamMarkedForSelection && !paintNextOne)
46.                     {
47.                         var arrMat = new Material[] { wallTobePainted.GetComponent<MeshRenderer>().materials[0], materialToPaint };
48.                         wallTobePainted.GetComponent<MeshRenderer>().materials = arrMat;
49.                         Debug.Log("StartPreview" + sideOfwall.GetInstanceID());
50.                     }
51.                     //Change Element 1
52.                     if (Input.GetMouseButtonDown(0) || paintNextOne)
53.                     {
54.                        
55.                         paintNextOne = true;
56.                         var arrMat = new Material[] { wallTobePainted.GetComponent<MeshRenderer>().materials[0], materialToPaint };
57.                         wallTobePainted.GetComponent<MeshRenderer>().materials = arrMat;
58.                         sideOfwall.GetComponent<Marked>().origiMat = arrMat;
59.                        
60.                     }
61.    
62.                     if (Input.GetMouseButtonUp(0))
63.                     {
64.                         paintNextOne = false;
65.                     }
66.  
67.                 }
68.                 if (sideOfwall.name == "TwoSide")
69.                 {
70.                     //Preview
71.                     if (selectObject.targetedObjName.GetComponent<Marked>().IamMarkedForSelection && !paintNextOne)
72.                     {
73.                         var arrMat = new Material[] { materialToPaint, wallTobePainted.GetComponent<MeshRenderer>().materials[1] };
74.                         wallTobePainted.GetComponent<MeshRenderer>().materials = arrMat;
75.                         Debug.Log("StartPreview" + sideOfwall.GetInstanceID());
76.                     }
77.  
78.  
79.                     //Change Element 0
80.                     if (Input.GetMouseButtonDown(0) || paintNextOne)
81.                     {
82.                      
83.                         paintNextOne = true;
84.                         var arrMat = new Material[] { materialToPaint, wallTobePainted.GetComponent<MeshRenderer>().materials[1] };
85.                         wallTobePainted.GetComponent<MeshRenderer>().materials = arrMat;
86.                         sideOfwall.GetComponent<Marked>().origiMat = arrMat;
87.                        
88.                     }
89.                     if (Input.GetMouseButtonUp(0))
90.                     {
91.                         paintNextOne = false;
92.                     }
93.  
94.  
95.                 }
96.             }
97.             if (Input.GetMouseButtonUp(0))
98.             {
99.                 paintNextOne = false;
100.             }
101.  
102.  
103.         }
104.         if (Input.GetMouseButtonUp(0))
105.         {
106.             paintNextOne = false;
107.         }
108.        
109.     }
110.  
111.     public void activatePaint()
112.     {
113.         if (paintOn == false)
114.         {
115.             paintOn = true;
116.         }
117.         else
118.         {
119.             paintOn = false;
120.         }
121.  
122.     }
123.  
124.     public void OnMouseOver()
125.     {
126.  
127.     }
128.  
129. }

 

For Anyone that has issues with Materia changes dont forget you must assign the Array again in order to work . Specific on the above request here is the bug :

1. WallModel.GetComponent<MeshRenderer>().materials = origiMat;