public virtual void Reset()
{
Statistics.Restarts++;
Current = Start;
PuzzleStack.Clear();
}
public virtual void Init(Puzzle puzzle)
{
if (puzzle == null)
{
throw new ArgumentNullException("puzzle");
}
Start = Current = puzzle;
PuzzleStack.Clear();
PuzzleStack.Push(puzzle);
}
public virtual bool UndoMove()
{
if (PuzzleStack.Count < 2)
{
return(false);
}
Statistics.Undos++;
PuzzleStack.Pop(); // Discard top
Current = PuzzleStack.Peek();
return(true);
}
public virtual void Init()
{
PuzzleStack.Clear();
PuzzleStack.Push(Start);
}
private void UpdateState(Map newState)
{
PuzzleStack.Push(newState);
Current = newState;
}
