Changing MeshRenderer Materials at Runtime

Graphics Shaders & Materials
1

I have changed MeshRenderer materials before, but never on an object with multiple material ID’s, and I am having a little trouble achieving this.

I assumed it was as straight-forward as assigning to an array with an int, but that doesn’t appear to be working.

The script is designed to toggle a light and an object’s material on and off, simulating a bulb switching on and off in a flickering manner.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

[System.Serializable]
public class LightFlickerArray
{
    public MeshRenderer lightObject;
    public int material = 0;
}

public class LightFlicker : MonoBehaviour
{
    public GameObject light;
    public Material onMaterial;
    public Material offMaterial;
    [SerializeField]
    public LightFlickerArray[] lightObjects;

    void Update()
    {
        if (Random.value > 0.9)
        {
            if (light.activeSelf == true)
            {
                light.SetActive(false);
                foreach(LightFlickerArray lfr in lightObjects)
                {
                    lfr.lightObject.materials[lfr.material] = offMaterial;
                }
            }
            else
            {
                light.SetActive(true);
                foreach (LightFlickerArray lfr in lightObjects)
                {
                    lfr.lightObject.materials[lfr.material] = onMaterial;
                }
            }
        }
    }
}
2

From the docs:

3

Seems like a needlessly complicated system, but thanks, it’s working now :smile: