/// <summary>
/// Update changes the layout and positions based on input or other variables
/// Base class updates all items in the scene then calls any overlays to get them to render themselves
/// </summary>
/// <param name="time">Total game time since it was started</param>
/// <param name="elapsedTime">Elapsed game time since the last call to update</param>
/// <returns>The next gamestate to transition to. Default is the return value of an overlay or NONE. Override Update if you want to change this behaviour</returns>
public virtual GameState Update(TimeSpan time, TimeSpan elapsedTime)
{
//Update the Scene
scene.Update(time, elapsedTime);
//Default is no state changes, override the class if you want a different state
return((overlay == null) ? GameState.None : overlay.Update(time, elapsedTime));
}
protected override void Update(GameTime gameTime)
{
TimeSpan elapsedTime = gameTime.ElapsedGameTime;
TimeSpan time = gameTime.TotalGameTime;
// The time since Update was called last
float elapsed = (float)elapsedTime.TotalSeconds;
GameState changeState = GameState.None;
keyState = Keyboard.GetState();
XInputHelper.Update(this, keyState);
if ((keyState.IsKeyDown(Keys.RightAlt) || keyState.IsKeyDown(Keys.LeftAlt)) && keyState.IsKeyDown(Keys.Enter) && !justWentFullScreen)
{
ToggleFullScreen();
justWentFullScreen = true;
}
if (keyState.IsKeyUp(Keys.Enter))
{
justWentFullScreen = false;
}
if (XInputHelper.GamePads[PlayerIndex.One].BackPressed ||
XInputHelper.GamePads[PlayerIndex.Two].BackPressed)
{
if (gameState == GameState.PlayEvolved || gameState == GameState.PlayRetro)
{
paused = !paused;
}
if (gameState == GameState.LogoSplash)
{
this.Exit();
}
}
//Reload settings file?
if (XInputHelper.GamePads[PlayerIndex.One].YPressed)
{
//settings = Settings.Load("settings.xml");
//GC.Collect();
}
if (!paused)
{
//Update everything
changeState = currentScreen.Update(time, elapsedTime);
// Update the AudioEngine - MUST call this every frame!!
Sound.Update();
//If either player presses start then reset the game
if (XInputHelper.GamePads[PlayerIndex.One].StartPressed ||
XInputHelper.GamePads[PlayerIndex.Two].StartPressed)
{
changeState = GameState.LogoSplash;
}
if (changeState != GameState.None)
{
ChangeState(changeState);
}
}
base.Update(gameTime);
}
