using UnityEngine;
using System.Collections;

[System.Serializable]
public class AnimationCurveProperty
{
    public AnimationCurve flickerCurve;
    public float timeLength = 1f;
    public bool randomStartTime = false;
    float _startTime = 0;
    float _currentTime = 0;

    public float EvaluateStep(float delta)
    {
        if (_startTime == 0 && randomStartTime)
            _startTime = Random.Range(0.01f, 1f);
        _currentTime += delta;
        return flickerCurve.Evaluate(((_currentTime / timeLength) + _startTime) % 1f);
    }
}


public class flicker : MonoBehaviour
{

    public float lightIntensity = 1f;
    public AnimationCurveProperty flickerCurve;

    void Update()
    {
        GetComponent<Light>().intensity = lightIntensity * flickerCurve.EvaluateStep(Time.deltaTime);
    }

}