GameFramework.EntityController.AddShield C# (CSharp) Method

        internal void AddShield(int objId, TableConfig.Skill cfg, int seq)
        {
            EntityViewModel view = GetEntityViewById(objId);
            if (null != view && null != view.Entity) {
                EntityInfo entity = view.Entity;
                if (cfg.type == (int)SkillOrImpactType.Skill) {
                    entity.SetShield(Operate_Type.OT_Relative, cfg.addshield);
                } else {
                    ImpactInfo impactInfo = entity.GetSkillStateInfo().GetImpactInfoBySeq(seq);
                    if (null != impactInfo) {
                        entity.SetShield(Operate_Type.OT_Relative, impactInfo.DamageData.AddShield);
                    }
                }
            }
        }

 static public int AddShield(IntPtr l)
 {
     try {
         GameFramework.EntityController self = (GameFramework.EntityController)checkSelf(l);
         System.Int32 a1;
         checkType(l, 2, out a1);
         TableConfig.Skill a2;
         checkType(l, 3, out a2);
         System.Int32 a3;
         checkType(l, 4, out a3);
         self.AddShield(a1, a2, a3);
         pushValue(l, true);
         return(1);
     }
     catch (Exception e) {
         return(error(l, e));
     }
 }