/// <summary>
/// [异常]：ArgumentException
/// </summary>
Task Deserialize(XmlElement element, BehaviorTree bt)
{
if (element.Name != "Task")
{
Debug.LogError("wrong data format");
return(null);
}
// 创建task
string className = element.GetAttribute("ClassName");
Task taskObj = bt.CreateTask(className);
if (taskObj == null)
{
Debug.LogError(string.Format("fail to create task instance for '{0}'.", className));
return(null);
}
// 尝试获取task对应的taskParam元数据
FieldInfo taskParamsInfo = taskObj.GetType().GetField("taskParams", BindingFlags.Public | BindingFlags.Instance);
if (taskParamsInfo != null)
{
// 获取xml节点属性的TaskParams内容
string taskParamsVal = element.GetAttribute("TaskParams");
if (string.IsNullOrEmpty(taskParamsVal))
{
Debug.LogError("invalid TaskParams.");
}
else
{
// 反序列化TaskParams
System.Type type = taskParamsInfo.GetValue(taskObj).GetType(); // 注意这里不能用paramsInfo.FieldType，否则只会得到基类的Type
object taskParamsObj = JsonUtility.FromJson(taskParamsVal, type);
//HandleShareVariableDeserialization(taskParamsObj, bt);
HandleSharedVariableDeserialization(taskParamsObj, bt);
taskParamsInfo.SetValue(taskObj, taskParamsObj);
HandleExternalBTDeserialization(taskObj); // 注意：要放在taskParamsInfo.SetValue(taskObj, taskParamsObj)后调用
}
}
// 获取task对应的nodeData元数据
FieldInfo nodeDataInfo = taskObj.GetType().GetField("nodeData", BindingFlags.Public | BindingFlags.Instance);
if (nodeDataInfo != null)
{
// 获取xml节点属性的nodeData内容
string nodeDataVal = element.GetAttribute("NodeData");
if (string.IsNullOrEmpty(nodeDataVal))
{
Debug.LogError("invalid NodeData.");
}
else
{
// 反序列化NodeData
System.Type type = nodeDataInfo.FieldType;
object nodeDataObj = JsonUtility.FromJson(nodeDataVal, type);
nodeDataInfo.SetValue(taskObj, nodeDataObj);
}
}
else
{
Debug.LogError(string.Format("fail to get the nodeData field in {0}", taskObj.GetType()));
}
// 递归处理子节点
foreach (XmlElement subEle in element.ChildNodes)
{
if (subEle.Name == "Task")
{
(taskObj as ParentTask).AddChild(Deserialize(subEle, bt) as Task);
continue;
}
else
{
Debug.LogError("wrong data format");
}
}
return(taskObj);
}
void Init()
{
_bt = ScriptableObject.CreateInstance <BehaviorTree>();
_bt.Entry = _bt.CreateTask <EntryTask>();
Serialize();
}
/// <summary>
/// [摘要]：从内部XML字符串反序列化BehaviorTree对象
/// </summary>
public bool Deserialize(string xml, Transform transform = null)
{
XmlDocument doc = new XmlDocument();
try
{
doc.LoadXml(xml);
}
catch (System.Xml.XmlException)
{
return(false);
}
_bt = ScriptableObject.CreateInstance <BehaviorTree>();
_bt.Transform = transform; // 编辑期可为null
// 处理bt属性和blackboard
XmlElement btEle = doc.GetElementsByTagName("BehaviorTree")[0] as XmlElement;
_bt.btParams = JsonUtility.FromJson <BehaviorTreeParams>(btEle.GetAttribute("BTParams"));
/*XmlElement blackboardEle = doc.GetElementsByTagName("Blackboard")[0] as XmlElement;
* List<string> keys = JsonUtility.FromJson<List<string>>(blackboardEle.GetAttribute("Keys"));
* foreach (var key in keys)
* {
* _bt.Blackboard.Set(key, null);
* }*/
// 处理trunk
XmlElement entryEle = doc.GetElementsByTagName("Trunk")[0].FirstChild as XmlElement;
try
{
_bt.Entry = Deserialize(entryEle, _bt) as EntryTask;
}
catch (System.ArgumentException)
{
return(false);
}
// 处理apartBranches
XmlElement apartBranchesEle = (XmlElement)doc.GetElementsByTagName("ApartBranches").Item(0);
foreach (XmlElement apartBranch in apartBranchesEle.ChildNodes)
{
try
{
Deserialize(apartBranch, _bt);
}
catch (System.ArgumentException)
{
return(false);
}
}
/*if (Dirty)
* {
* // 比如反序列化时因为全局黑板条目的删减修改了Shared变量的name值
* Serialize();
* Dirty = false;
* }*/
return(true);
}