using UnityEngine;
using System.Collections;

public class LightFlicker : MonoBehaviour
{
    public float MaxReduction;
    public float MaxIncrease;
    public float RateDamping;
    public float Strength;
    public bool StopFlickering;

    private Light _lightSource;
    private float _baseIntensity;

    private float lastUpdateTime = 0f;
    public void Reset()
    {
        MaxReduction = 0.2f;
        MaxIncrease = 0.2f;
        RateDamping = 0.1f;
        Strength = 300;
    }

    public void Start()
    {
        _lightSource = GetComponent<Light>();
        if (_lightSource == null)
        {
            Debug.LogError("Flicker script must have a Light Component on the same GameObject.");
            return;
        }
        _baseIntensity = _lightSource.intensity;
        lastUpdateTime = Time.time;
    }

    //doesnt need to run every frame. every fixed frame is good enough.
    void FixedUpdate()
    {
        if (_lightSource.enabled)
        {
            if (!StopFlickering && lastUpdateTime + RateDamping < Time.time)
            {
                _lightSource.intensity = Mathf.Lerp(_lightSource.intensity, Random.Range(_baseIntensity - MaxReduction, _baseIntensity + MaxIncrease), Strength * Time.deltaTime);
                lastUpdateTime = Time.time;
            }
        }
    }
}