InputHandler Impl

public sealed class InputHandler : GameComponent, IInputManager
{
    public InputHandler(Game game)
        : base(game)
    {
    }

    // assigned in Update() call
    KeyboardState lastState;

    /// <summary>
    /// Überprüft ob eine Taste gedrückt worden ist.
    /// </summary>
    public bool IsKeyPressed(Keys key)
    {
        Keys[] lastKeys = this.lastState.GetPressedKeys();
        return IsKeyDown(key) && !lastKeys.Contains(key);
    }

    /// <summary>
    /// Überprüft, ob eine Taste momentan gedrückt ist.
    /// </summary>
    public bool IsKeyDown(Keys key)
    {
        KeyboardState currentState = Keyboard.GetState();
        Keys[] currentKeys = currentState.GetPressedKeys();
        return currentKeys.Contains(key);
    }

    public override void Update(GameTime gameTime)
    {
        lastState = Keyboard.GetState();
    }
}