protected override void Update(GameTime gameTime)
        {
            MouseState mouse = Mouse.GetState();
            KeyboardState kstatee = Keyboard.GetState();

            switch (CurrentGameState)
            {
                case GameState.Video:
                    //if (vidPlayer.State == MediaState.Stopped)
                    CurrentGameState = GameState.MainMenu;
                    break;
                case GameState.MainMenu:

                    if (buttonSP.isClicked == true)
                    {
                        spPlayer = new Player(Content, "Player1" );
                        CurrentGameState = GameState.SinglePlayer;
                        screenwidth = spPlayer.level.Width * 32;
                        screenheight = (spPlayer.level.Height + 1) * 32;
                        graphics.PreferredBackBufferWidth = screenwidth;
                        graphics.PreferredBackBufferHeight = screenheight;
                        graphics.ApplyChanges();
                    }
                    if (buttonMP.isClicked == true)
                    {
                        CurrentGameState = GameState.Multiplayer;
                        splitbar = Content.Load<Texture2D>("Game/SplitBalken");
                        spPlayer = new Player(Content, "Player1"); //spPlayer nur zwecks Abmessungen
                        screenwidth = spPlayer.level.Width * 32 * 2 +2 ;
                        screenheight = (spPlayer.level.Height + 1) * 32;
                        graphics.PreferredBackBufferWidth = screenwidth;
                        graphics.PreferredBackBufferHeight = screenheight;
                        graphics.ApplyChanges();

                        GraphicsDevice.Viewport = new Viewport(0, 0, screenwidth, screenheight);
                        graphics.ApplyChanges();
                        mainViewport = GraphicsDevice.Viewport;

                        leftViewport = mainViewport;
                        rightViewport = mainViewport;
                        leftViewport.Width = (leftViewport.Width / 2 ) -1;
                        rightViewport.Width = (rightViewport.Width / 2)-1 ;
                        rightViewport.X = leftViewport.Width  +2;

                        graphics.ApplyChanges();
                    }
                    if (buttonHS.isClicked == true)
                    {
                        highscore = new HighScore(Content.Load<Texture2D>("MainMenu/Back"), graphics.GraphicsDevice);
                        screenwidth = 300;
                        screenheight = 300;
                        graphics.PreferredBackBufferWidth = screenwidth;
                        graphics.PreferredBackBufferHeight = screenheight;
                        graphics.ApplyChanges();
                        CurrentGameState = GameState.HighScore;
                    }
                    if (buttonEX.isClicked == true) CurrentGameState = GameState.Exiting;

                    buttonSP.Update(mouse);
                    buttonMP.Update(mouse);
                    buttonHS.Update(mouse);
                    buttonEX.Update(mouse);

                    break;
                case GameState.SinglePlayer:
                    if (SignedInGamer.SignedInGamers[0].Gamertag != null && SignedInGamer.SignedInGamers[0].Gamertag != spPlayer.Name)
                        spPlayer.Name = SignedInGamer.SignedInGamers[0].Gamertag;
                    if (spPlayer.Lives <= 0 && spPlayer.Lives != -1)
                    {
                        spPlayer.Lost();
                        spPlayer.Lives = -1;
                    }
                    if(spPlayer.Lives > 0)
                        spPlayer.Update(gameTime, true);

                    break;
                case GameState.Multiplayer:
                    if (!Guide.IsVisible)
                    {
                        foreach (SignedInGamer signedInGamer in
                            SignedInGamer.SignedInGamers)
                        {
                            Player player = signedInGamer.Tag as Player;

                            if (networkSession != null)
                            {
                                if (networkSession.SessionState ==
                                            NetworkSessionState.Lobby)
                                {
                                    HandleLobbyInput();

                                }
                                else
                                {
                                    if(player.Lives>0)
                                    HandleGameplayInput(player, gameTime);

                                }
                            }
                            else if (availableSessions != null)
                            {
                                HandleAvailableSessionsInput();
                            }
                            else
                            {
                                HandleTitleScreenInput();
                            }
                        }
                    }

                    break;
                case GameState.HighScore:
                    if (highscore.highscorebutton.isClicked == true)
                    {
                        SetMainMenuOptions();
                    }
                    highscore.Update(mouse);
                    break;
                case GameState.Exiting:
                    this.Exit();
                    break;
            }

            if (kstatee.IsKeyDown(Keys.Escape))
            {
                if (CurrentGameState == GameState.MainMenu)
                    CurrentGameState = GameState.Exiting;
                else
                {
                    SetMainMenuOptions();
                }
            }

            base.Update(gameTime);
        }
        protected override void LoadContent()
        {
            spriteBatch = new SpriteBatch(GraphicsDevice);

            IsMouseVisible = true;

            spritefont = Content.Load<SpriteFont>("Arial");
            spritefont2 = Content.Load<SpriteFont>("Arial2");

            buttonSP = new MenuButton(Content.Load<Texture2D>("MainMenu/SPButton"), graphics.GraphicsDevice);
            buttonMP = new MenuButton(Content.Load<Texture2D>("MainMenu/MPButton"), graphics.GraphicsDevice);
            buttonHS = new MenuButton(Content.Load<Texture2D>("MainMenu/HSButton"), graphics.GraphicsDevice);
            buttonEX = new MenuButton(Content.Load<Texture2D>("MainMenu/EXButton"), graphics.GraphicsDevice);

            buttonSP.SetPosition(new Vector2(60, 120));
            buttonMP.SetPosition(new Vector2(60, 180));
            buttonHS.SetPosition(new Vector2(60, 240));
            buttonEX.SetPosition(new Vector2(60, 300));

            menubackground = Content.Load<Texture2D>("MainMenu/MenuBG");
            menurec = new Rectangle(0, 0, screenwidth, screenheight);

            title = Content.Load<Texture2D>("MainMenu/Ueberschrift");
            titlerec = new Rectangle(60, 20, title.Width, title.Height);

            hsbackground = Content.Load<Texture2D>("MainMenu/HSBG");
            highscore = new HighScore(Content.Load<Texture2D>("MainMenu/Back"), graphics.GraphicsDevice);

            //spPlayer = new Player(Content, SignedInGamer.SignedInGamers[0].DisplayName);
            //spPlayer = new Player(Content, "Philo");

            //vid = Content.Load<Video>("Intro");
            //vidRect = new Rectangle(0, 0, screenwith, screenheight);
            //if(CurrentGameState == GameState.Video)
            //vidPlayer.Play(vid);
        }