ADOFAIRenderer/Util/BundleLoader.cs

using System;
using System.Reflection;
using System.Resources;
using MelonLoader;
using UnityEngine;

namespace ADOFAIRenderer.Util
{
    internal static class BundleLoader
    {
        private static readonly string BundlePlatform;
        private static readonly Assembly? ExecutingAssembly;

        static BundleLoader()
        {
            BundlePlatform = Application.platform switch
            {
                RuntimePlatform.WindowsPlayer => "Win64",
                RuntimePlatform.OSXPlayer => "OSX",
                _ => "Linux"
            };
            ExecutingAssembly = Assembly.GetExecutingAssembly();
        }

        public static AssetBundle GetBundle(string resourcePath)
        {
            if (ExecutingAssembly != null)
            {
                var bundlePath = $"ADOFAIRenderer.Bundle.{BundlePlatform}.{resourcePath}";
                using var resourceStream = ExecutingAssembly.GetManifestResourceStream(bundlePath);
                if (resourceStream != null)
                {
                    return AssetBundle.LoadFromStream(resourceStream);
                }
                
                Melon<RenderMod>.Logger.Error($"Could not find bundle resource in DLL.\n{bundlePath}");
                throw new MissingManifestResourceException("Could not find bundle resource in DLL.");
            }
            
            Melon<RenderMod>.Logger.Error("Executing assembly has not been set properly.");
            throw new InvalidOperationException("ExecutingAssembly has not been set."); 
        }
    }
}