Unity3d Serialize问题

备忘：

1. ScriptableOjbect中，由于Serialization的原因，不能使用基类引用来存储子类对象，这样都会导致数据丢失

2. 无法直接对Unity的数据如，vector3, quaternion等使用BinaryFormatter进行序列化，会报“SerializationException: Type UnityEngine.Vector3 is not marked as Serializable”。要绕过这个问题的姿势是，自己对Vector3进行包装。下面是其中一种方法

using System;
using System.Runtime.Serialization;
using UnityEngine;

namespace Assets.Editor
{
    sealed class Vector3SerializationSurrogate : ISerializationSurrogate
    {



        public void GetObjectData(object obj, System.Runtime.Serialization.SerializationInfo info, System.Runtime.Serialization.StreamingContext context)
        {
            Vector3 v3 = (Vector3)obj;
            info.AddValue("x", v3.x);
            info.AddValue("y", v3.y);
            info.AddValue("z", v3.z);
        }

        public object SetObjectData(object obj, System.Runtime.Serialization.SerializationInfo info, System.Runtime.Serialization.StreamingContext context, System.Runtime.Serialization.ISurrogateSelector selector)
        {
            Vector3 v3 = (Vector3)obj;
            v3.x = (float)info.GetValue("x", typeof(float));
            v3.y = (float)info.GetValue("y", typeof(float));
            v3.z = (float)info.GetValue("z", typeof(float));
            
            return (object)v3;
        }
    }
}

public static void TestFunc()
        {
            BinaryFormatter bf = new BinaryFormatter();
            SurrogateSelector ss = new SurrogateSelector();

            Vector3SerializationSurrogate v3Surrogate = new Vector3SerializationSurrogate();
            ss.AddSurrogate(typeof(Vector3), new StreamingContext(StreamingContextStates.All), v3Surrogate);

            bf.SurrogateSelector = ss;

            MemoryStream stream = new MemoryStream();

            Vector3 testObj = new Vector3(1, 2, 3);
            bf.Serialize(stream, testObj);
            stream.Position = 0;
            Vector3 resultObj = (Vector3)bf.Deserialize(stream);
            Debug.Log(resultObj);
        }