//撤销悔棋，恢复到下一个备忘录
static void Redo(Chessman chessman)
{
Console.WriteLine("******撤销悔棋******");
index++;
chessman.Restore(mementoCaretaker.GetMemento(index));
chessman.Show();
}
static void Main(string[] args)
{
Chessman chess = new Chessman("車", 1, 1);
Play(chess);
chess.X = 4;
Play(chess);
chess.Y = 5;
Play(chess);
Undo(chess);
Undo(chess);
Redo(chess);
Redo(chess);
}
public static void Main(string[] args)
{
_chessman = new Chessman(new Point(1, 10));
_chessman.Position = new Point(2, 20);
_chessman.Position = new Point(3, 30);
_chessman.Position = new Point(4, 40);
_chessman.Position = new Point(5, 50);
_chessman.Position = new Point(9, 40);
_chessman.Undo(1)
.Undo(2)
.Undo(1)
.Redo()
.Redo()
.Redo()
.Redo()
.Redo()
.Undo(6)
.Undo(5)
.Undo(4);
Console.ReadKey();
}
//下棋，同时保存备忘录
static void Play(Chessman chessman)
{
mementoCaretaker.AddMemento(chessman.Save());
index++;
chessman.Show();
}