AsyncResourceLoader.cs

using Godot;
using MPewsey.ManiaMapGodot.Exceptions;
using System.Threading.Tasks;
 
namespace MPewsey.ManiaMapGodot
{
    public static class AsyncResourceLoader
    {
        public static async Task<T> LoadAsync<T>(string path, string typeHint = "", bool useSubThreads = false,
            ResourceLoader.CacheMode cacheMode = ResourceLoader.CacheMode.Reuse) where T : Resource
        {
            var tree = (SceneTree)Engine.GetMainLoop();
            var error = ResourceLoader.LoadThreadedRequest(path, typeHint, useSubThreads, cacheMode);
 
            if (error != Error.Ok)
                throw new ThreadedResourceRequestException($"Error occured while requesting resource: (Error = {error}, Path = {path})");
 
            var status = ResourceLoader.LoadThreadedGetStatus(path);
 
            while (status != ResourceLoader.ThreadLoadStatus.Loaded)
            {
                if (status != ResourceLoader.ThreadLoadStatus.InProgress)
                    throw new ThreadedResourceRequestException($"Thread load status error: (Error = {status}, Path = {path})");
 
                await tree.ToSignal(tree, SceneTree.SignalName.ProcessFrame);
                status = ResourceLoader.LoadThreadedGetStatus(path);
            }
 
            return (T)ResourceLoader.LoadThreadedGet(path);
        }
    }
}