using UnityEngine;

namespace IllOmen
{
    /// <summary>Varies a light's intensity with noise so it reads as a candle flame.</summary>
    [RequireComponent(typeof(Light))]
    public class CandleFlicker : MonoBehaviour
    {
        [SerializeField] private float baseIntensity = 6f;
        [SerializeField] private float flickerAmount = 1f;
        [SerializeField] private float flickerSpeed = 7f;

        private Light candleLight;

        private void Awake()
        {
            candleLight = GetComponent<Light>();
        }

        private void Update()
        {
            float noise = Mathf.PerlinNoise(Time.time * flickerSpeed, 0f);
            candleLight.intensity = baseIntensity + (noise - 0.5f) * 2f * flickerAmount;
        }
    }
}