MyGame.MyGame.Update C# (CSharp) Method

        protected override void Update(GameTime gameTime)
        {
            KeyboardState keyState = Keyboard.GetState();
            //if (keyState.IsKeyDown(Keys.Escape))
            //    Exit();

            foreach (Event ev in events)
            {
                switch (ev.EventId)
                {
                    case (int)MyEvent.G_Exit: if(paused) Exit(); break;
                    case (int)MyEvent.G_StartGame:
                        if (paused)
                            initializeGame2();
                        break;
                    case (int)MyEvent.G_NextLevel:
                        paused = true;
                        canPause = false;
                        break;
                    case (int)MyEvent.G_NextLevel_END_OF_MUSIC:
                        if (currentLevel == Constants.NUM_OF_LEVELS)
                        {
                            initializeCreditsScreen();
                        }
                        else
                        {
                            paused = false;
                            canPause = true;
                            currentLevel++;
                            monsters.Dispose();
                            initializeGame2();
                        }
                        break;
                    case (int)MyEvent.G_StartLevel:
                        if(Components.Contains(levelScreen))
                        {
                            Components.Remove(levelScreen);
                            paused = false;
                        }
                        break;
                    case (int)MyEvent.G_StartScreen:
                        paused = true;
                        initializeStartMenu();
                        break;
                    case (int)MyEvent.G_CreditScreen: initializeCreditsScreen(); break;
                    case (int)MyEvent.G_HelpScreen: initializeHelpScreen(); break;
                }
            }
            events.Clear();

            if (delayedAction.eventHappened(gameTime, keyState.IsKeyDown(Keys.RightAlt) &&
                                                    keyState.IsKeyDown(Keys.Enter)))
            {
                graphics.ToggleFullScreen();
            }

            if ((keyState.IsKeyDown(Keys.Enter) || keyState.IsKeyDown(Keys.Escape))&& gameOver)
            {
                gameOver = false;
                mediator.fireEvent(MyEvent.G_StartScreen);
            }

            if (delayedAction2.eventHappened(gameTime, keyState, Keys.C))
            {
                if ((int)cameraMode == 2)
                {
                    cameraMode = CameraMode.thirdPerson;
                    ((ChaseCamera)camera).resetOffsets();
                }
                else
                {
                    cameraMode++;
                    ((ChaseCamera)camera).setOffsetsFor1stPerson();
                }

            }

            base.Update(gameTime);
        }