Unity 序列化的问题

Unity 序列化

• 当我用父类引用子类的实例时，序列化只会保存父类的数据。
• 解决这种问题只能使用Json序列化
• 继承unity的序列化接口，用一个字符串保存真正的值，在序列化之前和序列化之后，对这个字符串进行还原。代码如下

[Serializable]
	public class VFXStageSetting : ISerializationCallbackReceiver
	{

		public string effectType;
		public VFXAction action;
		public bool edit;

		[SerializeField]
		public string dataStr;
		IReadOnlyDictionary<string, Type> types = (from assembly in AppDomain.CurrentDomain.GetAssemblies ()
												   from type in assembly.GetTypes ()
												   where type.IsSubclassOf (typeof (VFXAction))
												   let attribute = type.GetCustomAttribute<EffectActionAttribute> (false)
												   select (attribute.showName, type)).ToReadOnlyDictionary (p => p.showName, p => p.Item2);

		void ISerializationCallbackReceiver.OnAfterDeserialize ()
		{
			action = (VFXAction)JsonConvert.DeserializeObject (dataStr, types[effectType]);
		}

		void ISerializationCallbackReceiver.OnBeforeSerialize ()
		{
			dataStr = JsonConvert.SerializeObject (action);
		}
	}