/// <summary>
/// Allows the game to run logic such as updating the world,
/// checking for collisions, gathering input, and playing audio.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Update(GameTime gameTime)
{
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed ||
Keyboard.GetState().IsKeyDown(Keys.Escape))
{
Exit();
}
base.Update(gameTime);
if (IsActive)
{
float deltaTime = (float)gameTime.ElapsedGameTime.TotalSeconds;
float totalGameTime = (float)gameTime.TotalGameTime.TotalSeconds;
_gamePadVibrationController.Update(deltaTime);
_cameraShaker.Update(deltaTime);
switch (_gameScreen)
{
case GameScreen.HomeScreen:
{
bool switchScreen = _homeScreen.Update(deltaTime, totalGameTime);
if (switchScreen)
{
_homeScreen.StopMusic();
_cinematicScreen.ResetScreen();
Fader.Instance.StartFadeOut();
SetGameScreen(GameScreen.CinematicScreen);
}
}
break;
case GameScreen.CinematicScreen:
{
bool switchScreen = _cinematicScreen.Update(deltaTime, totalGameTime);
if (switchScreen)
{
_instructionScreen.ResetScreen();
Fader.Instance.StartFadeOut();
SetGameScreen(GameScreen.InstructionsScreen);
}
}
break;
case GameScreen.InstructionsScreen:
{
bool switchScreen = _instructionScreen.Update(deltaTime, totalGameTime);
if (switchScreen)
{
_mainScreen.ResetScreen();
_mainScreen.StartMusic();
Fader.Instance.StartFadeOut();
SetGameScreen(GameScreen.MainScreen);
}
}
break;
case GameScreen.MainScreen:
{
bool switchScreens = _mainScreen.Update(deltaTime, totalGameTime);
if (switchScreens)
{
_mainScreen.StopMusic();
_gameOverScreen.ResetScreen();
Fader.Instance.StartFadeOut();
SetGameScreen(GameScreen.GameOverScreen);
}
}
break;
case GameScreen.GameOverScreen:
{
bool switchScreens = _gameOverScreen.Update(deltaTime, totalGameTime);
if (switchScreens)
{
_homeScreen.StartMusic();
_homeScreen.ResetScreen();
Fader.Instance.StartFadeOut();
SetGameScreen(GameScreen.HomeScreen);
}
}
break;
default:
throw new ArgumentOutOfRangeException();
}
_screenFader.Update(deltaTime);
}
else
{
_gamePadVibrationController.StopVibration();
}
}