Java - 2D数组操作正在影响索引的反转

Question

我正在尝试通过运用我的知识和制作Java国际象棋游戏来学习Java。目前它是严格的文本。在我的程序中，我有一个功能，允许我移动一块。所有部件都存储在称为板的2D阵列中。然而问题在于当我试图移动一块时这个功能。如果我将一块（“白嘴鸦”）从board[7][0]移动到board[6][0]由于某种原因，其中相反的（board[0][0]到board[1][0]）也会被移动。

这是没有任何修改显示与displayBoard()的董事会：

ROOK, KNIGHT, BISHOP, QUEEN, KING, BISHOP, KNIGHT, ROOK, 
PAWN, PAWN, PAWN, PAWN, PAWN, PAWN, PAWN, PAWN, 
null, null, null, null, null, null, null, null, 
null, null, null, null, null, null, null, null, 
null, null, null, null, null, null, null, null, 
null, null, null, null, null, null, null, null, 
PAWN, PAWN, PAWN, PAWN, PAWN, PAWN, PAWN, PAWN, 
ROOK, KNIGHT, BISHOP, QUEEN, KING, BISHOP, KNIGHT, ROOK,

一块一块地被移动：

null, KNIGHT, BISHOP, QUEEN, KING, BISHOP, KNIGHT, ROOK, 
ROOK, PAWN, PAWN, PAWN, PAWN, PAWN, PAWN, PAWN, 
null, null, null, null, null, null, null, null, 
null, null, null, null, null, null, null, null, 
null, null, null, null, null, null, null, null, 
null, null, null, null, null, null, null, null, 
ROOK, PAWN, PAWN, PAWN, PAWN, PAWN, PAWN, PAWN, 
null, KNIGHT, BISHOP, QUEEN, KING, BISHOP, KNIGHT, ROOK,

只有左下方的车应该被移动。 Board.Java类：

public class Board {
    public Pieces[][] board = new Pieces[8][8];

    private Pieces[] MainLine = new Pieces[]{Pieces.ROOK, Pieces.KNIGHT, Pieces.BISHOP, Pieces.QUEEN, Pieces.KING, Pieces.BISHOP, Pieces.KNIGHT, Pieces.ROOK};
    private Pieces[] BishopLine = new Pieces[]{Pieces.PAWN, Pieces.PAWN, Pieces.PAWN, Pieces.PAWN, Pieces.PAWN, Pieces.PAWN, Pieces.PAWN, Pieces.PAWN};

    public Board(){
        resetBoard();
    }

    private void resetBoard() {
        board = new Pieces[8][8];
        board[0] = MainLine;
        board[board.length - 1] = MainLine;
        board[1] = BishopLine;
        board[board.length - 2] = BishopLine;
    }

    public void displayBoard() {
        for(int rank = 0; rank < board.length; rank++) {
            System.out.println("");
            for(int file = 0; file < board.length; file ++) {
                System.out.print(board[rank][file] + ", ");
            }
        }
        for(int x = 0; x < 3; x++) {
            System.out.println("");
        }
    }

    public Pieces getPiece(int rank, int file) {
        return board[rank][file];
    }

    public void movePiece(int rank, int file, int newRank, int newFile) {
        Pieces temp = getPiece(rank, file);
        board[rank][file] = null;
        board[newRank][newFile] = temp;
    }
}

在我的主类我创建一个新的板实例，显示它，移动一块movePiece(7, 0, 6, 0)，然后再次显示板。我认为主要问题是在Board.java类中，我不知道出了什么问题或为什么其他索引受到影响。任何人都可以向我解释为什么会发生这种情况或如何更好地操纵2D board阵列以进一步实现我的目标，即将一块移动到给定位置而不影响任何其他部分。

编辑：添加了额外的代码 -

Main.Java创建了一个游戏实例，其中将来会出现其他条件，但它是Game.java，它直接引用Board.Java，因为它继承了它：

public class Main {
    public static void main(String[] args) {
        Game game = new Game();

        game.displayBoard();
        game.movePiece(7, 0, 6, 0);
        game.displayBoard();

    }
}

Game.java只是调用super来创建板。它稍后会保留额外的功能：

public class Game extends Board {
    public Game() {
        super();
    }

}

Answer 1

另一答案