public ScreenManager(Game game)
: base(game)
{
_spriteBatch = (SpriteBatch)game.Services.GetService(typeof(SpriteBatch));
// Sets initial screen to start screen since that is
// the first screen that is present in the game
_activeScreen = new StartScreen(game, _spriteBatch);
}
public override void Update(ref Screen activeScreen, GameTime gameTime)
{
_scrollStartY -= (float)gameTime.ElapsedGameTime.TotalMilliseconds * 0.02f;
if (_ambientSound == null)
{
_ambientSound = Resources.Instance.GetSound("theme").CreateInstance();
_ambientSound.IsLooped = true;
_ambientSound.Volume = 0.25f;
_ambientSound.Play();
}
if (_loadScene)
{
_ambientSound.Stop();
activeScreen = new GameScreen(_game, _spriteBatch);
}
}
public override void Update(ref Screen activeScreen, GameTime gameTime)
{
if (Resources.Instance.shipHit && _hitTimer == 0)
{
Resources.Instance.Lives = Math.Max(Resources.Instance.Lives - 1, 0);
Resources.Instance.GetSound("glass").Play();
}
if (Resources.Instance.shipHit && _hitTimer < _hitResetGoal)
{
_hitTimer += gameTime.ElapsedGameTime.Milliseconds;
}
else
{
_hitTimer = 0;
Resources.Instance.shipHit = false;
}
if (_ambientSound == null)
{
_ambientSound = Resources.Instance.GetSound("game").CreateInstance();
_ambientSound.IsLooped = true;
_ambientSound.Volume = 0.5f;
_ambientSound.Play();
}
if(!Resources.Instance.GameOver)
_currentTime += (float)gameTime.ElapsedGameTime.TotalSeconds;
if (_currentTime >= MAX_TIME)
{
Resources.Instance.PlayerWins = false;
Resources.Instance.GameOver = true;
}
if (Keyboard.GetState().IsKeyDown(Keys.Escape))
{
Resources.Instance.Score = 0;
foreach (KeyValuePair<int, MobileMeshModel> model in _manager.modelLookup)
{
_game.Components.Remove(model.Value);
}
_manager.modelLookup.Clear();
foreach (Emitter e in _manager.emitters)
{
_game.Components.Remove(e.System);
}
_game.Components.Remove(_manager.skybox);
_game.Components.Remove(_manager.GameBoundary);
_game.Components.Remove(_manager.Ship);
_game.Components.Remove(_manager);
_ambientSound.Stop();
activeScreen = new StartScreen(_game, _spriteBatch);
}
}
// Passes reference so can change the screen based // off user input. public abstract void Update(ref Screen activeScreen, GameTime gameTime);