using AcDream.App.Rendering;

var datDir = args.FirstOrDefault()
             ?? Environment.GetEnvironmentVariable("ACDREAM_DAT_DIR");

if (string.IsNullOrWhiteSpace(datDir))
{
    Console.Error.WriteLine("usage: AcDream.App <dat-directory>");
    Console.Error.WriteLine("   or: set ACDREAM_DAT_DIR and run with no args");
    return 2;
}

using var window = new GameWindow(datDir);
window.Run();
return 0;