BaseLoader.cs

using System.IO;
using UnityEngine;

namespace Decal_Loader;

public abstract class BaseLoader(string configPath) {
    protected readonly string configPath = configPath;

    public void Init() {
        if (!Directory.Exists(configPath)) return;
        Load();
    }

    protected abstract void Load();

    protected static DecalCategory CreateDecalCategory(string categoryName) {
        var category = GameMod.CreateAndRegister<DecalCategory>(GUID.Create(), null); // GUID doesn't matter. Category is transient.
        category.NameLocalization = new($"decals.category.{categoryName}", categoryName, ".");
        LocalizationManager.Localize(category);
        return category;
    }

    protected static void RegisterDecal(DecalCategory category, GUID guid, Texture2D texture) {
        var decalResource = GameMod.CreateAndRegister<DecalResource>(guid, null);
        decalResource.Resource = texture;
        decalResource.Category = category;
    }

    protected static Texture2D LoadTexture(string file) {
        var fileData = File.ReadAllBytes(file);
        var tex      = new Texture2D(1, 1);
        tex.LoadImage(fileData);
        return tex;
    }
}