/// <summary>
/// Evaluates the action against a given InputState.
/// </summary>
/// <param name="state">The InputState to test for the action.</param>
/// <param name="controllingPlayer">The player to test, or null to allow any player.</param>
/// <param name="player">If controllingPlayer is null, this is the player that performed the action.</param>
/// <returns>True if the action occured, false otherwise.</returns>
public bool Evaluate(InputState state, PlayerIndex? controllingPlayer, out PlayerIndex player)
{
// Figure out which delgate methods to map from the state which takes
// care of our "newPressOnly" logic
ButtonPress buttonTest;
KeyPress keyTest;
if (newPressOnly)
{
buttonTest = state.IsButtonPressed;
keyTest = state.IsKeyPressed;
}
else
{
buttonTest = state.IsButtonDown;
keyTest = state.IsKeyDown;
}
// Now we simply need to invoke the appropriate methods for each button
// and key in our collections
foreach (Buttons button in buttons)
{
if (buttonTest(button, controllingPlayer, out player))
return true;
}
foreach (Keys key in keys)
{
if (keyTest(key, controllingPlayer, out player))
return true;
}
// If we got here, the action is not matched
player = PlayerIndex.One;
return false;
}
public override void HandleInput(GameTime gameTime, InputState input)
{
base.HandleInput(gameTime, input);
PlayerIndex idx;
if (menuCancel.Evaluate(input, null, out idx))
{
CallExit();
}
}
/// <summary>
/// Allows the screen to handle user input. Only called when
/// this screen is active.
/// </summary>
/// <param name="gameTime"></param>
/// <param name="input"></param>
public virtual void HandleInput(GameTime gameTime, InputState input)
{
}
/// <summary>
/// Responds to user input, changing the selected entry and accepting or cancelling
/// the menu.
/// </summary>
public override void HandleInput(GameTime gameTime, InputState input)
{
PlayerIndex playerIndex;
//Move to the previous menu entry?
if (menuUp.Evaluate(input, ControllingPlayer, out playerIndex))
{
selectedEntry--;
if (!string.IsNullOrEmpty(selectionChangeSound))
SoundManager.Play(selectionChangeSound);
if (selectedEntry < 0)
{
selectedEntry = menuEntries.Count - 1;
}
}
//Move to the next menu entry?
if (menuDown.Evaluate(input, ControllingPlayer, out playerIndex))
{
selectedEntry++;
if (!string.IsNullOrEmpty(selectionChangeSound))
SoundManager.Play(selectionChangeSound);
if (selectedEntry >= menuEntries.Count)
{
selectedEntry = 0;
}
}
if (menuSelect.Evaluate(input, ControllingPlayer, out playerIndex))
{
OnSelectEntry(selectedEntry, playerIndex);
if (!string.IsNullOrEmpty(selectionSound))
{
SoundManager.Play(selectionSound);
}
}
else if (menuCancel.Evaluate(input, ControllingPlayer, out playerIndex))
{
OnCancel(playerIndex);
if (!string.IsNullOrEmpty(cancelSound))
{
SoundManager.Play(cancelSound);
}
}
}
