SpriteManager

using UnityEngine;
using UnityEngine.AddressableAssets;
using UnityEngine.ResourceManagement.AsyncOperations;
using System.Collections.Generic;

[CreateAssetMenu(fileName = "SpriteAsset", menuName = "Assets/SpriteAsset")]
public class SpriteAsset : ScriptableObject
{
    public AssetReferenceSprite[] spriteReferences;
}

public class SpriteManager : MonoBehaviour
{
    public SpriteAsset spriteAsset;
    private Dictionary<string, Sprite> spriteDictionary;

    void Start()
    {
        InitializeSpriteDictionary();
    }

    private void InitializeSpriteDictionary()
    {
        spriteDictionary = new Dictionary<string, Sprite>();

        foreach (AssetReferenceSprite spriteRef in spriteAsset.spriteReferences)
        {
            spriteRef.LoadAssetAsync<Sprite>().Completed += handle =>
            {
                if (handle.Status == AsyncOperationStatus.Succeeded)
                {
                    Sprite loadedSprite = handle.Result;
                    spriteDictionary.Add(loadedSprite.name, loadedSprite);
                }
            };
        }
    }

    public Sprite GetSprite(string id)
    {
        if (spriteDictionary.TryGetValue(id, out Sprite sprite))
        {
            return sprite;
        }
        else
        {
            Debug.LogWarning("Sprite with id " + id + " not found.");
            return null;
        }
    }
}