C＃如何“保存”随机生成的Class对象的特定副本？

Question

I am making a battleship game in console and I would like to implement a replay-system, where I could rewatch games. For this I use StreamWriter to record the player's moves, and in a different loop, a StreamReader uses these to 'replay' the game on screen. However, the position of the ships is not the same, because it is generated when a new game is started. The NEWGAME loop is the same as the REPLAY, but in the replay the comp automatically makes the moves via the streamreader, however, the map is different because it is always randomly generated. My question is that how can I save an exact copy of a 'map' that is in this situation a class? Thanks in advance! If you have any questions I can answer.

switch (x)
        {
            case "newgame":
        Mezo Játékos2Hajói= new Mezo();
        Mezo Játékos1AmitLát = new Mezo();
        Mezo Játékos1Hajói = new Mezo();
        Mezo Játékos2AmitLát = new Mezo();
....

This generates the field for the new game, then come the rest, player attacks etc.

The replay case works the same as a new game, but the attacks are inserted by the computer from a streamreader.

        case "replay":
        Mezo Játékos2VHajói= new Mezo();
        Mezo Játékos1VAmitLát = new Mezo();
        Mezo Játékos1VHajói = new Mezo();
        Mezo Játékos2VAmitLát = new Mezo();

The problem is here. This case generates a new for itself, because it wouldn't work, but here I would like to use the one used in newgame".

Answer 1

This is exactly the kind of thing that the Command Pattern is great for. Here's a simplified version of something you could do:

interface ICommand { void Execute(); }

class PlaceShip : ICommand
{
    int x;
    int y;
    Ship ship;

    public PlaceShip(int x, int y, Ship ship)
    {
        // Initialize fields
    }

    public void Execute()
    {
        // Place the ship
    }
}

class Fire : ICommand
{
    int x;
    int y;
    Player player;

    public Fire(int x, int y, Player player)
    {
        // Initialize fields
    }

    public void Execute()
    {
        // Try to hit enemy
    }
}

Then you can keep a history of ICommand objects which you can replay easily by just iterating through the list again.

Answer 2

You can try to use a XMLSerialize to export a the whole class to a Structured XMl automatically. It's kind of a way to make a full copy of the object in XML.