Question

考虑使用n rows和n columns（此处为75x75）的2D网格。鼠标单击时在每个单元格中绘制符号（标记）。下面的代码用于在单元格中绘制网格线和符号：

class DrawCanvas extends JPanel{

        @Override
        public void paintComponent(Graphics g){
            super.paintComponent(g);
            setBackground(Color.WHITE);

            //Lines
            g.setColor(Color.BLACK);
            for(int ligne = 1; ligne < ROWS; ++ligne){
                g.fillRoundRect(0, cellSize * ligne - halfGridWidth, canvasWidth - 1,
                        gridWidth, gridWidth, gridWidth);
            }
            for(int colonne = 1; colonne < COLS; ++colonne){
                g.fillRoundRect(cellSize * colonne - halfGridWidth, 0
                        , gridWidth, canvasHeight - 1,
                        gridWidth, gridWidth);
            }

            //Symbols
            Graphics2D g2d = (Graphics2D)g;
            g2d.setStroke(new BasicStroke(symbolStrokeWidth,
                    BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND)); 
            for(int ligne = 0; ligne < ROWS; ++ligne){
                for(int colonne = 0; colonne < COLS; ++colonne){
                    int x1 = colonne * cellSize + cellPadding;
                    int y1 = ligne * cellSize + cellPadding;

                    if(board[ligne][colonne] == Token.CERCLE_ROUGE){
                        g2d.setColor(Color.RED);
                        g2d.drawOval(x1, y1, symbolSize, symbolSize);
                        g2d.fillOval(x1, y1, symbolSize, symbolSize);
                    } else
                        if(board[ligne][colonne] == Token.CERCLE_BLEU){
                            int x2 = colonne * cellSize + cellPadding;
                            g2d.setColor(Color.BLUE);
                            g2d.drawOval(x1, y1, symbolSize, symbolSize);
                            g2d.fillOval(x2, y1, symbolSize, symbolSize);
                        }
                }

            }

使用下面的代码，我可以找到给定单元格的所有邻居：

private void neighbours(int  col, int row) {

     //find all serouding cell by adding +/- 1 to col and row 
    for (int colNum = col - 1 ; colNum <= (col + 1) ; colNum +=1  ) {

        for (int rowNum = row - 1 ; rowNum <= (row + 1) ; rowNum +=1  ) {

             //if not the center cell 
            if(! ((colNum == col) && (rowNum == row))) {

                //make sure it is within  grid
                if(withinGrid (colNum, rowNum)) {
                    System.out.println("Neighbor of "+ col+ " "+ row + " - " + colNum +" " + rowNum );
                }
            }
        }
    }
}

 //define if cell represented by colNum, rowNum is inside grid
private boolean withinGrid(int colNum, int rowNum) {

    if((colNum < 0) || (rowNum <0) ) {
        return false;    //false if row or col are negative
    }
    if((colNum >= COLS) || (rowNum >= ROWS)) {
        return false;    //false if row or col are > 75
    }
    return true;
}

考虑细胞内容：

public enum Token{
VIDE, CERCLE_BLEU, CERCLE_ROUGE
}

现在我想知道是否有办法确定单元格包含的内容：是空的：Token.VIDE，Token.CERCLE_BLEU还是Token.CERCLE_ROUGE.以及我如何实现这一点。

更新：以下是我的代码：

import javax.swing.JFrame;
import java.awt.*;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.*;


public final class Pha extends JFrame {

    public static int ROWS = 75;
    public static int COLS = 75;


    public static int cellSize = 15; 
    public static int canvasWidth = cellSize * COLS + (ROWS *4) ;
    public static int canvasHeight = cellSize * ROWS ; 
    public static int gridWidth = 1; 
    public static int halfGridWidth = gridWidth / 2;

    public static int cellPadding = cellSize / 5;
    public static int symbolSize = cellSize - cellPadding * 2; 
    public static int symbolStrokeWidth = 3; 

    public enum GameState{
        JOUE, NUL, CERCLE_ROUGE_GAGNE, CERCLE_BLEU_GAGNE
    }

    private GameState actualState;

    public enum Token{
        VIDE, CERCLE_ROUGE, CERCLE_BLEU
    }

    private Token actualPlayer;

    private Token[][] board;
    private final DrawCanvas canvas; 
    private JLabel statusBar; 

    public Pha(){

        canvas = new DrawCanvas(); 
        canvas.setPreferredSize(new Dimension(canvasWidth, canvasHeight));


        canvas.addMouseListener(new MouseAdapter() {
        @Override
        public void mouseClicked(MouseEvent e) { 
        int x = e.getX();
        int y = e.getY();

        int selectedRow = y / cellSize;
        int selectedCol;
            selectedCol = x / cellSize;


        if(actualState == GameState.JOUE){
            if(selectedRow >= 0 && selectedRow < ROWS && selectedCol >= 0
                    && selectedCol < COLS &&
                    board[selectedRow][selectedCol] == Token.VIDE){
                board[selectedRow][selectedCol] = actualPlayer; 
                updateGame(actualPlayer, selectedRow, selectedCol); 
                actualPlayer = (actualPlayer == Token.CERCLE_BLEU)? Token.CERCLE_ROUGE : Token.CERCLE_BLEU;

                neighbours(selectedRow, selectedCol);
            }
        } else { 
            initGame(); 
        }

        repaint();
    }

  });

    statusBar = new JLabel("  ");
    statusBar.setFont(new Font(Font.DIALOG_INPUT, Font.ITALIC, 15));
    statusBar.setBorder(BorderFactory.createEmptyBorder(2, 5, 4, 5));

    Container cp = getContentPane();
    cp.setLayout(new BorderLayout());
    cp.add(canvas, BorderLayout.EAST);
    cp.add(statusBar, BorderLayout.NORTH);

    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    pack(); 
    setTitle("Pha par esQmo");
    setVisible(true); 

    board = new Token[ROWS][COLS]; 
    initGame();   
}

    public void initGame(){
        for(int ligne = 0; ligne < ROWS; ++ligne){
            for(int colonne = 0; colonne < COLS; ++colonne){
                board[ligne][colonne] = Token.VIDE; 
            }
        }
        actualState = GameState.JOUE;
        actualPlayer = Token.CERCLE_ROUGE;
    }

    public void updateGame(Token theSeed, int ligneSelectionnee, int colonneSelectionnee) {
      if (aGagne(theSeed, ligneSelectionnee, colonneSelectionnee)) {  
         actualState= (theSeed == Token.CERCLE_ROUGE) ? GameState.CERCLE_ROUGE_GAGNE : GameState.CERCLE_BLEU_GAGNE;
      } else if (estNul()) { 
         actualState = GameState.CERCLE_BLEU_GAGNE;       
      }

   }
 public boolean estNul() {
      /*for (int row = 0; row < ROWS; ++row) {
         for (int col = 0; col < COLS; ++col) {
            if (board[row][col] == Token.VIDE) {
               return false; 
            }
         }
      }*/
      return false; 
   }

   public boolean aGagne(Token token, int ligneSelectionnee, int colonneSelectionnee) {
      return false; 

}


   public void neighbours(int  row, int col) {

    for (int colNum = col - 1 ; colNum <= (col + 1) ; colNum +=1  ) {

        for (int rowNum = row - 1 ; rowNum <= (row + 1) ; rowNum +=1  ) {

            if(!((colNum == col) && (rowNum == row))) {

                if(withinGrid (rowNum, colNum )) {

                    System.out.println("Neighbor of "+ row + " " + col + " is " + rowNum +" " + colNum );

                }
            }
        }
    }
}

private boolean withinGrid(int colNum, int rowNum) {

    if((colNum < 0) || (rowNum <0) ) {
        return false;
    }
    if((colNum >= COLS) || (rowNum >= ROWS)) {
        return false;
    }
    return true;
}

class DrawCanvas extends JPanel{

        @Override
        public void paintComponent(Graphics g){ //Invoqué via repaint()
            super.paintComponent(g); //Pour remplir l'arriere plan
            setBackground(Color.WHITE); //Defini la couleur de l'arriere plan


            g.setColor(Color.BLACK);
            for(int ligne = 1; ligne < ROWS; ++ligne){
                g.fillRoundRect(0, cellSize * ligne - halfGridWidth, canvasWidth - 1,
                        gridWidth, gridWidth, gridWidth);
            }
            for(int colonne = 1; colonne < COLS; ++colonne){
                g.fillRoundRect(cellSize * colonne - halfGridWidth, 0
                        , gridWidth, canvasHeight - 1,
                        gridWidth, gridWidth);
            }


            Graphics2D g2d = (Graphics2D)g;
            g2d.setStroke(new BasicStroke(symbolStrokeWidth,
                    BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND)); 
            for(int ligne = 0; ligne < ROWS; ++ligne){
                for(int colonne = 0; colonne < COLS; ++colonne){
                    int x1 = colonne * cellSize + cellPadding;
                    int y1 = ligne * cellSize + cellPadding;

                    if(board[ligne][colonne] == Token.CERCLE_ROUGE){
                        g2d.setColor(Color.RED);
                        g2d.drawOval(x1, y1, symbolSize, symbolSize);
                        g2d.fillOval(x1, y1, symbolSize, symbolSize);
                    } else
                        if(board[ligne][colonne] == Token.CERCLE_BLEU){
                            int x2 = colonne * cellSize + cellPadding;
                            g2d.setColor(Color.BLUE);
                            g2d.drawOval(x1, y1, symbolSize, symbolSize);
                            g2d.fillOval(x2, y1, symbolSize, symbolSize);
                        }
                }

            }

            if(actualState == GameState.JOUE){
                if(actualPlayer == Token.CERCLE_ROUGE){
                    statusBar.setText("ROUGE, c'est votre tour");
                    statusBar.setForeground(Color.RED);

                } else {
                    statusBar.setText("BLEU, c'est votre tour");
                    statusBar.setForeground(Color.BLUE);
                    statusBar.addMouseMotionListener(null);
                }
            } else
                if(actualState == GameState.NUL){
                    statusBar.setForeground(Color.yellow);
                    statusBar.setText("Match nul! Cliquez pour rejouer");
                } else
                    if(actualState == GameState.CERCLE_ROUGE_GAGNE){
                        statusBar.setText("Le jouer X a remporté la partie, cliquez pour rejouer");
                        statusBar.setForeground(Color.RED);
                    } else
                        if(actualState == GameState.CERCLE_BLEU_GAGNE){
                            statusBar.setForeground(Color.BLUE);
                            statusBar.setText("Le joueur O a remporté la partie, cliquez pour rejouer");
                        }
        }
    }

    public static void main(String[] args){
        SwingUtilities.invokeLater(() -> {
            Pha pha = new Pha();
        });
    }
}

Answer 1

在board数组中，您为每个单元格存储Token 要检索此信息，您可以更改

System.out.println("Neighbor of "+ row + " " + col + " is " + rowNum +" " + colNum );

在neighbors()到：

System.out.println("Neighbor of "+ row + " " + col + " is " + rowNum +" " + colNum +
                        " Contains "+ board[rowNum][colNum]);

单击中间单元格（17,19）：

打印出来：

17 19的邻居是16 18包含CERCLE_ROUGE
17 19的邻居是   17 18包含CERCLE_BLEU
17 19的邻居是18 18包含   CERCLE_ROUGE
17 19的邻居是16 19包含CERCLE_BLEU
邻居   17 19是18 19包含CERCLE_BLEU
17 19的邻居是16 20   包含CERCLE_ROUGE
17邻居17 19 20包含CERCLE_BLEU
17 19的邻居是18 20包含CERCLE_ROUGE

如何根据2D阵列上的特定位置获取网格单元的状态

1 个答案: