protected override void UnloadContent()
 {
     GlobalTextures.UnloadContent();
     Globals.startMenuesManager.UnloadContent();
     Globals.loadingScreenManager.UnloadContent();
     Globals.gameplayManager.UnloadContent();
     Globals.songManager.UnloadContent();
     Globals.soundEffectsManager.UnloadContent();
 }
        protected override void LoadContent()
        {
            spriteBatch = new SpriteBatch(GraphicsDevice);
            viewport    = GraphicsDevice.Viewport;

            GlobalTextures.LoadContent();
            Globals.startMenuesManager.LoadContent();
            Globals.loadingScreenManager.LoadContent();
            Globals.songManager.LoadContent();
            Globals.soundEffectsManager.LoadContent();
        }