從1類抓取變量，並在沒有繼承的情況下在另一個類中使用它們c＃

Question

我正在製作象棋遊戲，並且要移動棋子我需要變量board，它位於Form1類中。我想知道是否在我的基類中調用board變量，所以我可以在引用我的基類的其他類中使用它。

這是代碼看起來是（我只包括關鍵零部件不是一切）

public partial class Form1 : Form 
{ 
    public string[,] board = new string[8, 8]; 
} 

class Pieces 
{ 
    //I want there to be a variable here that will always contain the exact data as the board variable 
    //I also have other variables that are in the Form1 class that I need in here 
} 

class Rook : Pieces 
{ 
    //This is just a small sample of how I set up the moves but its in a for loop 
    if (board[x + i, y] == null && !board[x + i, y].Contains("King")) 
     pieceMove.AddLast(placementBoard[x + i, y]); 
} 

這是我想的，但我想知道是否有一種不同的方法

public partial class Form1 : Form 
{ 
    public string[,] board = new string[8, 8]; 
    Rook[] whiteRook = new Rook[10];//I made an array of rooks so when a pawn gets to the opposite side of the board it can turn into a rook 


    public Form1() 
    { 
     InitializeComponent(); 
     Rook[0] whiteRook = new Rook(); 
     whiteRook.board = board;//Everytime a piece moves I will call this with every piece to update it 
    } 
} 

class Pieces 
{ 
    public string[,] board = new string[8,8]; 
} 

class Rook : Pieces 
{ 
    //This is just a small sample of how I set up the moves but its in a for loop 
    if (board[x + i, y] == null && !board[x + i, y].Contains("King")) 
     pieceMove.AddLast(placementBoard[x + i, y]); 
} 

Answer 1

比繼承更喜歡構圖。

您的對象模型現在都是錯誤的。你正試圖控制所有這些來自各個類的類，當這些類應該只包含片段特定的邏輯時，包含類應該控制狀態。你真的想有一個Board對象包含Piece對象，然後就可以繼承

public class Board 
{ 
    List<Piece> pieces; 
} 

public abstract class Piece 
{ 
    //Some base behavior/interface 
    public bool Move(int xTarget, int yTarget) 
    { 
     if (IsValidMove(xTarget, yTarget)) 
     { 
      //Do stuff 
     } 
    } 

    protected abstract bool IsValidMove(int xTarget, int yTarget); 
} 

然後子類Rook，Bishop等從「海賊王」。如果有必要，您可以通過構造函數或屬性將Board傳遞給Piece，但該依賴關係非常錯誤，Board應該控制自己的狀態。