(client) chore:修改渲染树定义加载，允许默认加载

Client/Assets/Scripts/Data/CharacterDefine.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Text.RegularExpressions;
 using System.Xml.Linq;
 using UnityEditor.ShaderGraph.Internal;
@@ -23,6 +24,7 @@ namespace Data
 
     public class CharacterDef : Define
     {
+        public CharacterAttributesDef attributes;
         public string texturePath = null;
         public DrawingOrderDef
             drawingOrder_down,
@@ -71,14 +73,18 @@ namespace Data
         public override bool Init(XElement xmlDef)
         {
             base.Init(xmlDef);
-            foreach (var node in xmlDef.Elements("DrawNodeDef"))
-            {
-                var drawNode = new DrawNodeDef();
-                drawNode.Init(node);
-                drawNodes.Add(drawNode);
-            }
 
-            return true;
+            var nodes = xmlDef.Elements("DrawNodeDef");
+            if (nodes.Count() == 0)
+                return false;
+            foreach (var node in nodes)
+                {
+                    var drawNode = new DrawNodeDef();
+                    drawNode.Init(node);
+                    drawNodes.Add(drawNode);
+                }
+
+            return true;;
         }
     }