use 'readTree' to parse data file

sample/node-config.b3-setting

@@ -28,6 +28,7 @@
     "name": "Clear",
     "type": "Action",
     "desc": "清除变量",
+    "children": 0,
     "output": [
       "清除的变量名"
     ]

sample/vars/test-vars.json

@@ -61,6 +61,19 @@
         "input": [
           "target"
         ]
+      },
+      {
+        "id": 8,
+        "name": "Clear",
+        "output": [
+          "test"
+        ],
+        "children": [
+          {
+            "id": 9,
+            "name": "Idle"
+          }
+        ]
       }
     ]
   }

sample/workdir/monster.json

@@ -4,18 +4,15 @@
     "id": 1,
     "name": "Sequence",
     "desc": "怪物测试AI",
-    "args": {},
     "children": [
       {
         "id": 2,
         "name": "Sequence",
         "desc": "攻击",
-        "args": {},
         "children": [
           {
             "id": 3,
             "name": "GetHp",
-            "args": {},
             "output": [
               "hp"
             ],
@@ -60,10 +57,14 @@
         "name": "Log",
         "desc": "逃跑",
         "args": {
-          "str": "Run!"
+          "message": "Run!"
         }
       }
     ]
   },
-  "desc": "怪物测试AI"
+  "desc": "怪物测试AI",
+  "firstid": 1,
+  "group": [],
+  "import": [],
+  "declvar": []
 }

sample/workdir/subtree1.json

@@ -9,7 +9,7 @@
         "id": 2,
         "name": "Log",
         "args": {
-          "str": "hello"
+          "message": "hello"
         }
       },
       {
@@ -21,5 +21,9 @@
       }
     ]
   },
-  "desc": "子树1"
+  "desc": "子树1",
+  "firstid": 1,
+  "group": [],
+  "import": [],
+  "declvar": []
 }