Change textures at runtime on object with multiple textures

Unity Engine
1

I have a cube with 3 textures (green, black and blue).

I’m trying to make it so the original textures (green, black and blue) on my mesh (cube) change every 5 seconds.
Only lateral textures will be changed (green to yellow, blue to red). After 2 seconds yellow and red textures will be changed again to original texures. I have a problem when new textures come back to original:

red to green
yellow to green instead of yellow to blue

The problem is probably in “instanced” materials…
I have noticed in Inspector that one material just disappeas.
Btw Swap routine works fine.

using UnityEngine;
using System.Collections;

public class Change
	: MonoBehaviour 
{
	
	public float coldTimer = 5.0f;
	public float warmTimer = 2.0f;
	public bool warming;
	
	public Transform myCharacter;
	public Texture oldTexturev1;
	public Texture newTexturev1;
	public Texture oldTexturev3;
	public Texture newTexturev3;
	
	private Material[] sharedMaterials;
	private Material[] myMaterials;
	private Material[] myMaterials1;
	private Material tmp;
	
	private float currTime;
	
	void Start() 
	{	
		currTime = coldTimer;
  		warming = false;  
		
		myMaterials = myCharacter.renderer.materials;
		myMaterials1 = myCharacter.renderer.materials;
		//Debug.Log(myMaterials[0]);
		//Debug.Log(myMaterials[2]);	
	}
	
	void Update()
	{	
		if(currTime > 0.0f)
  		{
    		currTime -= Time.deltaTime;
  		}
  		else
  		{
    		if(warming)
    		{
      			currTime = coldTimer;
			
				tmp = myMaterials[0];
				myCharacter.renderer.material = tmp;
				myCharacter.renderer.material.SetTexture("_MainTex", oldTexturev1);
			
				tmp = myMaterials[2];
				myCharacter.renderer.material = tmp;
				myCharacter.renderer.material.SetTexture("_MainTex", oldTexturev3);
				
      			warming = false;				
    		}
    		else
    		{
      			currTime = warmTimer;
				
				tmp = myMaterials[0];
				myCharacter.renderer.material = tmp;
				myCharacter.renderer.material.SetTexture("_MainTex", newTexturev1);
				
				tmp = myMaterials[2];
				myCharacter.renderer.material = tmp;
				myCharacter.renderer.material.SetTexture("_MainTex", newTexturev3);
				
				myCharacter.renderer.materials = myMaterials1;
				
      			warming = true;
				//Swap();
    		}			
  		}	
		
	}
	
	void Swap() {
		tmp = myMaterials[0];
    	myMaterials[0] = myMaterials[2];
    	myMaterials[2] = tmp;
    	myCharacter.renderer.materials = myMaterials;
	}
	
}

1115250–42056–$cube.unitypackage (2.04 MB)

2

SOLVED !!!

using UnityEngine;
using System.Collections;

public class Change
	: MonoBehaviour 
{
	
	public float coldTimer = 5.0f;
	public float warmTimer = 2.0f;
	public bool warming;
	
	public Transform myCharacter;
	public Texture oldTexturev1;
	public Texture newTexturev1;
	public Texture oldTexturev3;
	public Texture newTexturev3;
	
	private Material[] myMaterials;
	private Material[] myMaterials1;
	private Material[] storedMaterials;
	
	private float currTime;
	
	void Start() 
	{	
		currTime = coldTimer;
  		warming = false;
		
		myMaterials1 = myCharacter.renderer.materials;
		myMaterials = myMaterials1;
		myCharacter.renderer.materials = myMaterials;

	}
	
	void Update()
	{	
		if(currTime > 0.0f)
  		{
    		currTime -= Time.deltaTime;
  		}
  		else
  		{
    		if(warming)
    		{
      			currTime = coldTimer;
			
				myCharacter.renderer.material = myMaterials[0];
				myCharacter.renderer.material.SetTexture("_MainTex", oldTexturev1);
				myCharacter.renderer.materials = myMaterials;
			
				myCharacter.renderer.material = myMaterials[2];
				myCharacter.renderer.material.SetTexture("_MainTex", oldTexturev3);
				myCharacter.renderer.materials = myMaterials;
				
      			warming = false;				
    		}
    		else
    		{
      			currTime = warmTimer;
				
				myCharacter.renderer.material = myMaterials[0];
				myCharacter.renderer.material.SetTexture("_MainTex", newTexturev1);
				myCharacter.renderer.materials = myMaterials;
				
				myCharacter.renderer.material = myMaterials[2];
				myCharacter.renderer.material.SetTexture("_MainTex", newTexturev3);
				myCharacter.renderer.materials = myMaterials;
				
      			warming = true;
    		}			
  		}	
		
	}
		
}