How do I make a serialized dictionary in unity for 3d models?

Question

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

[System.Serializable]
public struct ImageInfo
{
    public Texture texture;
    public int width;
    public int height;
}

public class ImagesData : MonoBehaviour
{
    public ImageInfo[] images;

    public static Vector2 AspectRatio(float width, float height)
    {
        Vector2 scale = Vector2.one;
    }
}

This is the code for making a serialized dictionary for images which are 2D, how to I make it accept 3D models? I want it to be something like what is in the photo.

Answer 1

This is the code for making a serialized dictionary for images which are 2D

No it is not. What you show is a serialized array of ImageInfo.

For what you show in your image you can simply do

[Serializable]
public class ModeInfo
{
    public string Id;
    public GameObject Value;
}

public class ModelsDataManager : MonoBehaviour
{
    public ModeInfo[] InteractionModes;
}

---

Or if you want it a bit further with supporting some of the dictionary functionalities

public class ModelsDataManager : MonoBehaviour
{
    [SerializeField]
    private List<ModeInfo> InteractionModes;

    private bool TryGetInfo(string id, out ModeInfo value)
    {
        foreach (var info in InteractionModes)
        {
            if (info.Id == id)
            {
                value = info;
                return true;
            }
        }

        value = default;
        return false;
        
        // or same thing using Linq (needs "using System.Linq;")
        //value = InteractionModes.FirstOrDefault(info => info.Id == id);
        //return value != null;
    }
    
    public bool TryGetValue(string id, out GameObject value)
    {
        if (!TryGetInfo(id, out var info))
        {
            value = default;
            return false;
        }

        // note that just like in normal dictionaries the value can still be "null" though
        value = info.Value;
        return true;
    }

    public void AddOrOverwrite(string id, GameObject value)
    {
        if (!TryGetInfo(id, out var info))
        {
            info = new ModeInfo()
            {
                Id = id
            };

            InteractionModes.Add(info);
        }

        info.Value = value;
    }
}

---

If you really want to go for the entire dictionary functionality including key checks, cheaper value access without iteration etc I would recommend to not implement this from scratch but rather use an existing solution like e.g.

• Unity's own one which is hidden in the Core RP Library Package though (comes installed as dependency e.g. with UniversialRenderPipeline or HighDefinitionenderPipeline).

  But this is very basic and only for serializing - has no useful Inspector drawer

• azixMcAze's Unity-SerializableDictionary (also available as a package)

  Has a cool Inspector drawer which even handles duplicate key checks etc.

• this one from Odin Inspector

  Note though that Odin Inspector is not free

• Or just go ahead and test one of the other many solutions ;)