I have a class BlinkingBehaviour which inherits from MonoBehaviour. Game objects attached to scripts containing classes that inherit from BlinkingBehaviour should, as the name suggests, blink.

BlinkingBehaviour is a small class so I will share the entirety of its code here:

public class BlinkingBehaviour : MonoBehaviour
{
    private Renderer renderer;

    public bool BlinkingEnabled;
    public Color BlinkingColour = new Color(1.0f, 127f / 255f, 39f / 255f);

    protected float CurrentColourScale;
    protected float ColourScaleIncrementPerUpdate = 0.005f; 
    
    protected const float MaxColourScale = 2f;

    protected void Start()
    {
        this.renderer = this.gameObject.GetComponent<Renderer>();
    }

    protected void Update()
    {
        if (this.BlinkingEnabled)
        {
            SetBlinkingColour();
        }
        else
        {
            SetColour();
        }
    }

    protected void SetColour()
    {
        if (this.CurrentColourScale <= 1f)
        {
            this.renderer.material.SetColor("_EmissionColor", this.BlinkingColour * this.CurrentColourScale);
        }
        else
        {
            this.renderer.material.SetColor("_EmissionColor", this.BlinkingColour * (MaxColourScale - this.CurrentColourScale));
        }
    }

    protected virtual void SetBlinkingColour()
    {
        SetColour();
        this.CurrentColourScale += ColourScaleIncrementPerUpdate;

        if (this.CurrentColourScale <= MaxColourScale)
        {
            return;
        }

        ResetBlinkingColourScale();
    }

    protected void ResetBlinkingColourScale()
    {
        this.CurrentColourScale = 0f;
    }
}

I have a class Lamp which inherits from BlinkingBehaviour. I attached Lamp.cs to an object in my scene. In my inspector, I checked the BlinkingEnabled option, expecting to see the Lamp game object blinking after I pressed "Play".

However, the object did not blink.

After setting a breakpoint in my Start method, I could see that this.gameObject.GetComponent<Renderer>(); returned a valid component.

On the other hand, my breakpoints in my Update method were not hit. (Yes, I have invoked base.Update() in the Update method in Lamp.cs.)

What can I do to ensure that game objects in my scene exhibit blinking behaviour when attached to scripts that inherit from BlinkingBehaviour?