DetonatorHeatwave.Update C# (CSharp) Method

    void Update()
    {
        if (_delayedExplosionStarted)
        {
            _explodeDelay = (_explodeDelay - Time.deltaTime);
            if (_explodeDelay <= 0f)
            {
                Explode();
            }
        }

        //_heatwave doesn't get defined unless SystemInfo.supportsImageEffects is true, checked in Explode()
        if (_heatwave)
        {
            // billboard it so it always faces the camera - can't use regular lookat because the built in Unity plane is lame
            _heatwave.transform.rotation = Quaternion.FromToRotation(Vector3.up, Camera.main.transform.position - _heatwave.transform.position);
            _heatwave.transform.localPosition = localPosition + (Vector3.forward * zOffset);

            _elapsedTime = _elapsedTime + Time.deltaTime;
            _normalizedTime = _elapsedTime/duration;

            //thought about this, and really, the wave would move linearly, fading in amplitude.
            s = Mathf.Lerp(_startSize,_maxSize,_normalizedTime);

            _heatwave.renderer.material.SetFloat("_BumpAmt", ((1-_normalizedTime) * distortion));

            _heatwave.gameObject.transform.localScale = new Vector3(s,s,s);
            if (_elapsedTime > duration) Destroy(_heatwave.gameObject);
        }
    }