RelaSphere/Assets/GameAssets/Scripts/SerializableDictionary.cs

using System;
using System.Collections.Generic;
using UnityEngine;

[Serializable]
public class SerializableDictionary<TKey, TValue>
{
    [Serializable]
    public class Node
    {
        public TKey key;
        public TValue value;
    }

    [SerializeField] private List<Node> nodes;

    private Dictionary<TKey, TValue> dictionary;

    public Dictionary<TKey, TValue> Dictionary
    {
        get
        {
            if (dictionary == null)
            {
                dictionary = ToDictionary();
            }
            
            return dictionary;
        }

    }

    private Dictionary<TKey, TValue> ToDictionary()
    {
        Dictionary<TKey, TValue> dictionary = new Dictionary<TKey, TValue>();
        foreach(Node node in nodes)
        {
            dictionary.Add(node.key, node.value);
        }
        return dictionary;
    }
}