using Thousandto.Code.Center;
using Thousandto.Core.Asset;
using UnityEngine;

namespace Thousandto.Code.Logic
{
    /// <summary>
    /// FGameObject的Shader的处理,用于Shader的切换处理.
    /// </summary>
    public class FGOShaderSwitcher
    {
        /// <summary>
        /// 处理切换接口
        /// </summary>
        /// <param name="sh"></param>
        /// <param name="code"></param>
        /// <param name="id"></param>
        /// <returns></returns>
        public static Shader Process(Shader sh,ModelTypeCode code,int id)
        {
            switch (code)
            {
                case ModelTypeCode.Wing:
                    return ProcessWing(sh, id);
                case ModelTypeCode.Object:
                    return ProcessObject(sh, id);
            }
            return sh;

        }

        //处理翅膀的处理
        private static Shader ProcessWing(Shader sh, int imodelid)
        {
            var _sn = sh.name;
            if (imodelid % 100 < 50) {
                _sn = _sn + "_AlphaTest";
            }
            var _rgbSh = ShaderUseRGB(_sn);
            if (_rgbSh != null)
                return _rgbSh;
            else if(sh.name != _sn)
            {
                //如果两个名字不同,那么就使用新的Shader
                var _si = ShaderManager.SharedInstance.GetShaderDefine(_sn);
                if (_si != null) return _si.RealShader;
            }       
            return sh;
        }

        //处理采集的shader
        private static Shader ProcessObject(Shader sh, int imodelid)
        {
            if (ShaderManager.IsEntityUseRGB && sh.name == "Ares/EntityState/Grown") {
                var _newSh = ShaderUseRGB("Ares/EntityState/Grown");
                if (_newSh!=null) return _newSh;
             }
            return sh;
        }

        //Shader使用RGB
        private static Shader ShaderUseRGB(string strShName) {
            if (ShaderManager.IsEntityUseRGB) {
                var _rgb = strShName + "_RGB";
                var _rgbSi = ShaderManager.SharedInstance.GetShaderDefine(_rgb);
                if (_rgbSi!=null) return _rgbSi.RealShader;
            }
            return null;
        }
    }
}