public bool Evaluate(InputState state)
{
foreach (Keys key in keys)
{
if (state.IsNewKeyPress(key))
return true;
}
return false;
}
/// <summary>
/// Lets the game respond to player input. Unlike the Update method,
/// this will only be called when the gameplay screen is active.
/// </summary>
public override void HandleInput(GameTime gameTime, InputState input)
{
if (input == null)
throw new ArgumentNullException("input");
// Look up inputs for the active player profile.
KeyboardState state = Keyboard.GetState();
if (state.IsKeyDown(Keys.Escape))
{
ScreenManager.AddScreen(new PauseMenuScreen(game));
}
}
/// <summary>
/// Responds to user input, accepting or cancelling the message box.
/// </summary>
public override void HandleInput(GameTime gameTime, InputState input)
{
// We pass in our ControllingPlayer, which may either be null (to
// accept input from any player) or a specific index. If we pass a null
// controlling player, the InputState helper returns to us which player
// actually provided the input. We pass that through to our Accepted and
// Cancelled events, so they can tell which player triggered them.
if (menuSelect.Evaluate(input))
{
// Raise the accepted event, then exit the message box.
if (Accepted != null)
Accepted(this, new EventArgs());
ExitScreen();
}
else if (menuCancel.Evaluate(input))
{
// Raise the cancelled event, then exit the message box.
if (Cancelled != null)
Cancelled(this, new EventArgs());
ExitScreen();
}
}
/// <summary>
/// Responds to user input, changing the selected entry and accepting
/// or cancelling the menu.
/// </summary>
public override void HandleInput(GameTime gameTime, InputState input)
{
// For input tests we pass in our ControllingPlayer, which may
// either be null (to accept input from any player) or a specific index.
// If we pass a null controlling player, the InputState helper returns to
// us which player actually provided the input. We pass that through to
// OnSelectEntry and OnCancel, so they can tell which player triggered them.
// Move to the previous menu entry?
if (menuUp.Evaluate(input))
{
selectedEntry--;
if (selectedEntry < 0)
selectedEntry = menuEntries.Count - 1;
}
// Move to the next menu entry?
if (menuDown.Evaluate(input))
{
selectedEntry++;
if (selectedEntry >= menuEntries.Count)
selectedEntry = 0;
}
if (menuSelect.Evaluate(input))
{
OnSelectEntry(selectedEntry);
}
else if (menuCancel.Evaluate(input))
{
OnCancel();
}
}
/// <summary>
/// Allows the screen to handle user input. Unlike Update, this method
/// is only called when the screen is active, and not when some other
/// screen has taken the focus.
/// </summary>
public virtual void HandleInput(GameTime gameTime, InputState input)
{
}
