ScenePartition/Runtime/SerializationUtility.cs

using System.Collections.Generic;
using UnityEngine;

namespace VertexColor.ScenePartition
{
    [System.Serializable]
    public class SerializableDictionary<TKey, TValue> : Dictionary<TKey, TValue>, ISerializationCallbackReceiver
    {
        [SerializeField]
        private List<TKey> dictionaryKeys = new List<TKey>();

        [SerializeField]
        private List<TValue> dictionaryValues = new List<TValue>();

        public void OnBeforeSerialize()
        {
            dictionaryKeys.Clear();
            dictionaryValues.Clear();

            foreach (KeyValuePair<TKey, TValue> item in this)
            {
                dictionaryKeys.Add(item.Key);
                dictionaryValues.Add(item.Value);
            }
        }

        public void OnAfterDeserialize()
        {
            Clear();

            if (dictionaryKeys.Count != dictionaryValues.Count) return;

            for (int i = 0; i < dictionaryKeys.Count; i++)
            {
                Add(dictionaryKeys[i], dictionaryValues[i]);
            }
        }
    }

    [System.Serializable]
    public class SerializableSortedList<TKey, TValue> : SortedList<TKey, TValue>, ISerializationCallbackReceiver
    {
        [SerializeField]
        private List<TKey> sortedListKeys = new List<TKey>();

        [SerializeField]
        private List<TValue> sortedListValues = new List<TValue>();

        public void OnBeforeSerialize()
        {
            sortedListKeys.Clear();
            sortedListValues.Clear();

            foreach (KeyValuePair<TKey, TValue> item in this)
            {
                sortedListKeys.Add(item.Key);
                sortedListValues.Add(item.Value);
            }
        }

        public void OnAfterDeserialize()
        {
            Clear();

            if (sortedListKeys.Count != sortedListValues.Count) return;

            for (int i = 0; i < sortedListKeys.Count; i++)
            {
                Add(sortedListKeys[i], sortedListValues[i]);
            }
        }
    }

    [System.Serializable]
    public class SerializableSortedSet<T> : SortedSet<T>, ISerializationCallbackReceiver
    {
        [SerializeField]
        private List<T> sortedSetValues = new List<T>();

        public void OnBeforeSerialize()
        {
            sortedSetValues.Clear();
            sortedSetValues.AddRange(this);
        }

        public void OnAfterDeserialize()
        {
            Clear();

            for (int i = 0; i < sortedSetValues.Count; i++)
            {
                Add(sortedSetValues[i]);
            }
        }
    }
}