using UnityEngine;

[ExecuteInEditMode]
public class NM_Wind : MonoBehaviour
{
	[Header("General Parameters")]
	[Tooltip("Wind Speed in Kilometers per hour")]
	public float WindSpeed = 30f;

	[Range(0f, 2f)]
	[Tooltip("Wind Turbulence in percentage of wind Speed")]
	public float Turbulence = 0.25f;

	[Header("Noise Parameters")]
	[Tooltip("Texture used for wind turbulence")]
	public Texture2D NoiseTexture;

	[Tooltip("Size of one world tiling patch of the Noise Texture, for bending trees")]
	public float FlexNoiseWorldSize = 175f;

	[Tooltip("Size of one world tiling patch of the Noise Texture, for leaf shivering")]
	public float ShiverNoiseWorldSize = 10f;

	[Header("Gust Parameters")]
	[Tooltip("Texture used for wind gusts")]
	public Texture2D GustMaskTexture;

	[Tooltip("Size of one world tiling patch of the Gust Texture, for leaf shivering")]
	public float GustWorldSize = 600f;

	[Tooltip("Wind Gust Speed in Kilometers per hour")]
	public float GustSpeed = 50f;

	[Tooltip("Wind Gust Influence on trees")]
	public float GustScale = 1f;

	private void Start()
	{
		ApplySettings();
	}

	private void Update()
	{
		ApplySettings();
	}

	private void OnValidate()
	{
		ApplySettings();
	}

	private void ApplySettings()
	{
		Shader.SetGlobalTexture("WIND_SETTINGS_TexNoise", NoiseTexture);
		Shader.SetGlobalTexture("WIND_SETTINGS_TexGust", GustMaskTexture);
		Shader.SetGlobalVector("WIND_SETTINGS_WorldDirectionAndSpeed", GetDirectionAndSpeed());
		Shader.SetGlobalFloat("WIND_SETTINGS_FlexNoiseScale", 1f / Mathf.Max(0.01f, FlexNoiseWorldSize));
		Shader.SetGlobalFloat("WIND_SETTINGS_ShiverNoiseScale", 1f / Mathf.Max(0.01f, ShiverNoiseWorldSize));
		Shader.SetGlobalFloat("WIND_SETTINGS_Turbulence", WindSpeed * Turbulence);
		Shader.SetGlobalFloat("WIND_SETTINGS_GustSpeed", GustSpeed);
		Shader.SetGlobalFloat("WIND_SETTINGS_GustScale", GustScale);
		Shader.SetGlobalFloat("WIND_SETTINGS_GustWorldScale", 1f / Mathf.Max(0.01f, GustWorldSize));
	}

	private Vector4 GetDirectionAndSpeed()
	{
		Vector3 normalized = base.transform.forward.normalized;
		return new Vector4(normalized.x, normalized.y, normalized.z, WindSpeed * 0.2777f);
	}
}