BlazorDoom.cs

using System;
using System.Net.Http;
using System.Runtime.InteropServices.JavaScript;
using System.Runtime.Versioning;
using System.Threading.Tasks;

namespace BlazorDoom
{
  // Must be named MainJS
  public partial class MainJS
  {
    static ManagedDoom.DoomApplication? app = null;


    [JSExport]
    public static void GameLoop(int[] downKeys, int[] upKeys)
    {
      if (app == null)
      {
        return;
      }
      //var watch = System.Diagnostics.Stopwatch.StartNew();
      app.Run(downKeys, upKeys);
      //watch.Stop();
      //Console.WriteLine($"fps {1000 / (float)(watch.ElapsedMilliseconds)}", );
    }

    [JSImport("getBaseUrl", "main.js")]
    public static partial string getBaseUrl();

    [JSExport]
    public static async Task LoadWad(string wadName = "doom1")
    {
      Console.WriteLine("Loading assets");
      string wadUrl = $"{getBaseUrl()}wad/{wadName}.wad";
      string soundFontUrl = $"{getBaseUrl()}wad/TimGM6mb.sf2";
      // string soundFontUrl = "http://localhost:5000/Roland_SC-55_v3.7.sf2";
      string[] args = { };
      string[] configLines = { };
      var http = new HttpClient();
      //jsProcessRuntime.InvokeVoid("gameLoop");
      Console.WriteLine(wadUrl);
      var stream = await http.GetStreamAsync(wadUrl);
      var soundFontStream = await http.GetStreamAsync(soundFontUrl);
      var commandLineArgs = new ManagedDoom.CommandLineArgs(args);
      ManagedDoom.DoomApplication.SoundFontStream = soundFontStream;
      app = new ManagedDoom.DoomApplication(commandLineArgs, configLines, http, stream, wadUrl);
      Console.WriteLine("Ready!");
    }

    public static async Task Main()
    {

      if (!OperatingSystem.IsBrowser())
      {
        throw new PlatformNotSupportedException("This demo is expected to run on browser platform");
      }
      LoadWad();
    }
  }
}