using System.Collections;
using System.Collections.Generic;
using UnityEngine;

[ExecuteInEditMode]
public class EnvironmentCom : MonoBehaviour
{
    [Range(0,1)]
    public float _SkyTime;

    public Transform _SunTrans;

    public Color SkyUpColor1;

    [Range(0,1)]
    public float SkyUpColor2Hight=0.8f;

    public Color SkyUpColor2;

    public Color SkyUpColor2Back;

    public Color SkyDownColor;



   
    public float HorizontalColorLength;

    [ColorUsage(false, true)]
    public Color HorizontalColor;

    [ColorUsage(false, true)]
    public Color HorizontalColorBack;

    public float SunSize;

    [ColorUsage(false, true)]
    public Color SunColor;

    [ColorUsage(false, true)]
    public Color SunGlowColor;



    #region ID
    int SkyUpColor1ID;
    int SkyUpColor2ID;
    int SkyUpColor2BackID;
    int SkyUpColor2HightID;
    int SkyDownColorID;

    int HorizontalColorID;
    int HorizontalColorBackID;
    int HorizontalColorLengthID;
    int SunDirID;
    int SunSizeID;
    int SunColorID;
    int SunGlowColorID;
    #endregion


    private void Awake()
    {
        GetKey();
    }

    void Update()
    {
        UpdateProperty();
    }

    void GetKey() {
        SkyUpColor1ID = Shader.PropertyToID("_SkyUpColor1");
        SkyUpColor2HightID = Shader.PropertyToID("_SkyUpColor2Hight");
        SkyUpColor2ID = Shader.PropertyToID("_SkyUpColor2");
        SkyUpColor2BackID = Shader.PropertyToID("_SkyUpColor2Back");
        SkyDownColorID = Shader.PropertyToID("_SkyDownColor");

        HorizontalColorID = Shader.PropertyToID("_HorizontalColor");
        HorizontalColorBackID = Shader.PropertyToID("_HorizontalColorBack");
        HorizontalColorLengthID = Shader.PropertyToID("_HorizontalColorLength");
        SunDirID = Shader.PropertyToID("_SunDir");
        SunSizeID = Shader.PropertyToID("_SunSize");
        SunColorID = Shader.PropertyToID("_SunColor");
        SunGlowColorID = Shader.PropertyToID("_SunGlowColor");
    }

    void UpdateProperty() {
        Shader.SetGlobalColor(SkyUpColor1ID,SkyUpColor1);
        Shader.SetGlobalFloat(SkyUpColor2HightID, SkyUpColor2Hight);
        Shader.SetGlobalColor(SkyUpColor2ID, SkyUpColor2);
        Shader.SetGlobalColor(SkyUpColor2BackID, SkyUpColor2Back); 
        Shader.SetGlobalColor(SkyDownColorID, SkyDownColor);
        Shader.SetGlobalColor(HorizontalColorID, HorizontalColor);
        Shader.SetGlobalColor(HorizontalColorBackID, HorizontalColorBack);
        Shader.SetGlobalFloat(HorizontalColorLengthID, HorizontalColorLength);

        Shader.SetGlobalVector(SunDirID, _SunTrans?-_SunTrans.forward:Vector3.one);
        Shader.SetGlobalFloat(SunSizeID, SunSize);
        Shader.SetGlobalColor(SunColorID, SunColor);
        Shader.SetGlobalColor(SunGlowColorID, SunGlowColor);
    }




}