using UnityEngine;

namespace CTS
{
	public class CTSWeatherController : MonoBehaviour
	{
		private Terrain m_terrain;

		private void OnEnable()
		{
			CTSSingleton<CTSTerrainManager>.Instance.RegisterWeatherController(this);
		}

		private void OnDisable()
		{
			CTSSingleton<CTSTerrainManager>.Instance.UnregisterWeatherController(this);
		}

		public void ProcessWeatherUpdate(CTSWeatherManager manager)
		{
			if (m_terrain == null)
			{
				m_terrain = GetComponent<Terrain>();
				if (m_terrain == null)
				{
					Debug.Log("CTS Weather Controller must be connected to a terrain to work.");
					return;
				}
			}
			if (m_terrain.materialType != Terrain.MaterialType.Custom)
			{
				Debug.Log("CTS Weather Controller needs a CTS Material to work with.");
				return;
			}
			Material materialTemplate = m_terrain.materialTemplate;
			if (materialTemplate == null)
			{
				Debug.Log("CTS Weather Controller needs a Custom Material to work with.");
				return;
			}
			materialTemplate.SetFloat(CTSShaderID.Snow_Amount, manager.SnowPower * 2f);
			materialTemplate.SetFloat(CTSShaderID.Snow_Min_Height, manager.SnowMinHeight);
			float value = manager.RainPower * manager.MaxRainSmoothness;
			materialTemplate.SetFloat(CTSShaderID.Terrain_Smoothness, value);
			if (manager.SeasonalTintActive)
			{
				Color white = Color.white;
				white = ((manager.Season < 1f) ? Color.Lerp(manager.WinterTint, manager.SpringTint, manager.Season) : ((manager.Season < 2f) ? Color.Lerp(manager.SpringTint, manager.SummerTint, manager.Season - 1f) : ((!(manager.Season < 3f)) ? Color.Lerp(manager.AutumnTint, manager.WinterTint, manager.Season - 3f) : Color.Lerp(manager.SummerTint, manager.AutumnTint, manager.Season - 2f))));
				for (int i = 0; i < 16; i++)
				{
					float w = materialTemplate.GetVector(CTSShaderID.Texture_X_Color[i]).w;
					materialTemplate.SetVector(CTSShaderID.Texture_X_Color[i], new Vector4(white.r, white.g, white.b, w));
				}
			}
		}
	}
}