/// <summary>
/// Use this function to announce a succesfull pass in the last state.
/// It can help in making the game more difficult over time.
/// </summary>
/// <param name="caller">The caller. Can be used as identifier for different
/// state difficulties.</param>
public virtual void Proceed(GameState caller)
{
currentState++;
}
/// <summary>
/// Pushes a new state on the stack.
/// </summary>
/// <param name="state">The new state.</param>
public void PushState(GameState state)
{
if (!IsEmpty())
{
Peek().Deactivate();
}
states.Add(state);
top++;
state.Activate();
}
