public static Texture[] AddTexture(string file, out int width, out int height)
{
if (sheetsLoaded)
{
throw new Exception($"Unable to add texture (file: {file}. Sheets are already loaded.");
}
var data = BitmapLoader.LoadTexture(file, out width, out height);
return(new[] { addTexture(data, file, width, height) });
}