using UnityEngine;

public class PerlinNoiseScroller
{
    #region Variables
    PerlinNoiseData m_data;

    Vector3 m_noiseOffset;
    Vector3 m_noise;
    #endregion

    #region Properties
    public Vector3 Noise => m_noise;
    #endregion

    #region Custom Methods
    public PerlinNoiseScroller(PerlinNoiseData _data)
    {
        m_data = _data;

        float _rand = 32f;

        m_noiseOffset.x = Random.Range(0f, _rand);
        m_noiseOffset.y = Random.Range(0f, _rand);
        m_noiseOffset.z = Random.Range(0f, _rand);
    }

    public void UpdateNoise()
    {
        float _scrollOffset = Time.deltaTime * m_data.frequency;

        m_noiseOffset.x += _scrollOffset;
        m_noiseOffset.y += _scrollOffset;
        m_noiseOffset.z += _scrollOffset;

        m_noise.x = Mathf.PerlinNoise(m_noiseOffset.x, 0f);
        m_noise.y = Mathf.PerlinNoise(m_noiseOffset.x, 1f);
        m_noise.z = Mathf.PerlinNoise(m_noiseOffset.x, 2f);

        m_noise -= Vector3.one * 0.5f;
        m_noise *= m_data.amplitude;
    }
    #endregion
}