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Thread: How would I drop the button to the lowest column for Connect 4.

  1. July 29th, 2020, 07:25 PM #1
    iruffrice
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    Angry How would I drop the button to the lowest column for Connect 4.

    public void actionPerformed(ActionEvent e) {
    for (int row = grid.length - 1; row >= 0; row--) {
    for(int col = grid.length - 1; col >= 0; col--) {

    if(buttons[row][col] == e.getSource()) {
    for(row = grid.length - 1; row >= 0; row--) {
    if(buttons[row][col].getText().equals("")) {
    if (turn % 2 == 0 && grid[row][col] == 0) {
    buttons[row][col].setText("X");
    grid[row][col] = 'X';
    turn++;
    break;

    } else {
    buttons[row][col].setText("O");
    grid[row][col] = 'O';
    turn++;
    break;
    }

    }
    }

    }
    }
    }

    //just for checking
    for (int rows = 0; rows < grid.length; rows++) {
    for (int columns = 0; columns < grid[0].length; columns++) {
    System.out.print(grid[rows][columns] + " ");
    } System.out.println();
    }
    }
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  2. July 30th, 2020, 06:03 AM #2
    Norm
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    Default Re: How would I drop the button to the lowest column for Connect 4.

    drop the button to the lowest column
    Please explain what you are trying to do.
    I think of columns as vertical and laid out from left to right, with column 0 being the leftmost one
    rows are horizontal and go from top to bottom with row 0 being the one at the top.

    Please edit your post and wrap your code with code tags:

    [code]
    **YOUR CODE GOES HERE**
    [/code]

    to get highlighting and preserve formatting.
    If you don't understand my answer, don't ignore it, ask a question.
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  3. July 30th, 2020, 09:17 AM #3
    iruffrice
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    Default Re: How would I drop the button to the lowest column for Connect 4. 

    import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Arrays;
 
public class Main implements ActionListener{
  static JButton[][] buttons = new JButton[6][7];
  static char[][] grid = new char[6][7];
  static boolean gameOver = false;
  static int turn = 0;
 
  public Main() {
 
    JFrame frame = new JFrame();
    JPanel panel = new JPanel();
 
    panel.setBorder(BorderFactory.createEmptyBorder(3,3,1,3));
    panel.setLayout(new GridLayout(6, 7));
 
 
    for(int gridRow = 0; gridRow < grid.length ; gridRow++) {
      for(int gridCol = 0; gridCol < grid[0].length; gridCol++){
        buttons[gridRow][gridCol] = new JButton("");
        buttons[gridRow][gridCol].setPreferredSize(new Dimension(90,90));
        buttons[gridRow][gridCol].addActionListener(this);
        buttons[gridRow][gridCol].setFont(new Font("Dialog", Font.BOLD, 50));
        panel.add(buttons[gridRow][gridCol]);
 
      }
    }
 
    frame.add(panel);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(300,300);
    frame.setTitle("Connect Four");
    frame.pack();
    frame.setResizable(false);
    frame.setVisible(true);
 
  }
 
  public static void main(String[] args) {
    new Main();
  }
 
 
  @Override
  public void actionPerformed(ActionEvent e) {
    for (int row = grid.length - 1; row >= 0; row--) {
      for(int col = grid.length - 1; col >= 0; col--) {
 
        if(buttons[row][col] == e.getSource()) {
          for(row = grid.length - 1; row >= 0; row--) {
            if(buttons[row][col].getText().equals("")) {
              if (turn % 2 == 0 && grid[row][col] == 0) {
                buttons[row][col].setText("X");
                grid[row][col] = 'X';
                turn++;
                break;
 
            } else {
               buttons[row][col].setText("O");
               grid[row][col] = 'O';
               turn++;
               break;
          } 
              break;
            }
          }
 
          }
        }
      }
 
      //just for checking
      for (int rows = 0; rows < grid.length; rows++) {
          for (int columns = 0; columns < grid[0].length; columns++) {
            System.out.print(grid[rows][columns] + " ");
          } System.out.println();
        }
    }
 
 
  // public static char[][] justChecking(char[][] grid, JButton[][] buttons) {
  //   for (int row = grid.length - 1; row >= 0; row--) {
  //     for(int col = grid.length - 1; col >= 0; col--) {
  //       buttons[row][col].setText("X");
  //       grid[row][col] = 'X';
  //     }
  //   } 
  // return grid;
  // }  
 
 
 
  public static boolean Horizontal(char[][] grid) {
    for(int row = 0; row < grid.length; row++){
      for(int columns = 0; columns <= 3; columns++ ) {
        if((grid[row][columns] == 'X') && ((grid[row][columns + 1] == 'X')) && (grid[row][columns + 2] == 'X') && (grid[row][columns + 3] == 'X')) {
          return true; 
        }
          if((grid[row][columns] == 'O') && (grid[row][columns + 1] == 'O') && (grid[row][columns + 2] == 'O') && (grid[row][columns + 3] == 'O')) {
          return true;
              }
            }
          }
          return false;
        }
 
 
  public static boolean Vertical(char[][] grid) { 
    for (int columns = 0; columns < grid[0].length; columns++) {
      for(int row = 0; row <= 2; row++){ 
        if((grid[row][columns] == 'X') && (grid[row + 1][columns] == 'X') && (grid[row + 2][columns] == 'X') && (grid[row + 3][columns] == 'X')) {
          return true;
          } if((grid[row][columns] == 'O') && (grid[row + 1][columns] == 'O') && (grid[row + 2][columns] == 'O') && (grid[row + 3][columns] == 'O')) {
            return true;
            }
      }
  } return false;
}
 
   public static boolean Diagonals(char[][] grid) {
     for(int row = 0; row <= 2; row++) {
       for(int columns = 0; columns <= 3; columns++) {
 
       if((grid[row][columns] == 'X') && (grid[row + 1][columns + 1] == 'X') && (grid[row + 2][columns + 2] == 'X') && (grid[row + 3][columns + 3] == 'X')) {
         return true;
       } if((grid[row][columns] == 'O') && (grid[row + 1][columns + 1] == 'O') && (grid[row + 2][columns + 2] == 'O') && (grid[row + 3][columns + 3] == 'O')) {
         return true;
       } 
     }
   }
       for(int row = grid.length - 1; row >= 3; row--) {
         for(int columns = 0; columns <= 3; columns++){
           if((grid[row][columns] == 'X') && (grid[row - 1][columns + 1] == 'X') && (grid[row - 2][columns + 2] == 'X') && (grid[row - 3][columns + 3] == 'X')) {
             return true;
           } if((grid[row][columns] == 'O') && (grid[row - 1][columns + 1] == 'O') && (grid[row - 2][columns + 2] == 'O') && (grid[row - 3][columns + 3] == 'O')) {
            return true;
           } 
         } 
       } return false;
    }
}

    im making a conenct 4 game and right now i can click to position the X's and O's on any button and anywhere in the array, but Im having difficulties making the X's and O's go the the bottom if you know how connect 4 works. ty
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  4. July 30th, 2020, 09:58 AM #4
    Norm
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    Default Re: How would I drop the button to the lowest column for Connect 4.

    having difficulties making the X's and O's go the the bottom
    Can you explain what happens? For example the player does something and then the computer does something.
    What is it the computer does? What do you want it to do differently?

    There are no comments in the code so I can not tell what it is trying to do. For example what are all the loops and if statements in the actionPerformed() method trying to do?
    If you don't understand my answer, don't ignore it, ask a question.
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  5. July 30th, 2020, 01:33 PM #5
    iruffrice
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    Default Re: How would I drop the button to the lowest column for Connect 4. 

     import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Arrays;
 
public class Main implements ActionListener{
  static JButton[][] buttons = new JButton[6][7];
  static char[][] grid = new char[6][7];
  static boolean gameOver = false;
  static int turn = 0;
  static JLabel player;
 
  public Main() {
 
 
    JFrame frame = new JFrame();
    JPanel panel = new JPanel();
 
    panel.setBorder(BorderFactory.createEmptyBorder(3,3,1,3));
    panel.setLayout(new GridLayout(6, 7));
 
 
    for(int gridRow = 0; gridRow < grid.length ; gridRow++) {
      for(int gridCol = 0; gridCol < grid[0].length; gridCol++){
        buttons[gridRow][gridCol] = new JButton("");
        buttons[gridRow][gridCol].setPreferredSize(new Dimension(90,90));
        buttons[gridRow][gridCol].addActionListener(this);
        buttons[gridRow][gridCol].setFont(new Font("Dialog", Font.BOLD, 50));
        panel.add(buttons[gridRow][gridCol]);
 
 
 
      }
    }
 
    frame.add(panel);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(300,300);
    frame.setTitle("Connect Four");
    frame.pack();
    frame.setResizable(false);
    frame.setVisible(true);
 
 
     player = new JLabel("Player ");
     player.setFont(new Font("Dialog", Font.BOLD, 15));
     player.setBounds(50,50,50,50);
     panel.add(player);
 
  }
 
  public static void main(String[] args) {
    new Main();
  }
 
 
 @Override
public void actionPerformed(ActionEvent e) {
 
if(gameOver == false) {
  for (int row = 0; row <= grid.length - 1; row++) {
    for (int col = 0; col <= grid[0].length - 1; col++) {
      if (buttons[row][col] == e.getSource()) {
        if (((JButton) e.getSource()).getText().isEmpty()) {
        if (turn % 2 == 0 ) {
          for (int row2 = grid.length - 1; row2>= 0; row2--){
            if (buttons[row2][col].getText().isEmpty()) {
 
              buttons[row2][col].setText("X");
              grid[row2][col] = 'X';
 
              if(Win(grid)) {
                System.out.println("Player 1 Won");
                gameOver = true;
              }
 
              break;
            } 
          }
            turn++;
        } else {
          for (int row2 = grid.length - 1; row2 >= 0; row2--) {
            if(buttons[row2][col].getText().isEmpty()) {
            buttons[row2][col].setText("O");
            grid[row2][col] = 'O';
            //turn++;
            if(Win(grid)) {
              System.out.println("Player 2 Won");
                gameOver = true;
              }
            break;
          }
          }
          turn++;
          }
 
        }
      }
    } break;
  }
}
}
 
 
  public static boolean Win(char[][] board) {
    if(Horizontal(board) || Vertical(board) || Diagonals(board)) {
      return true;
    }
    return false;
  }
 
  public static boolean Horizontal(char[][] grid) {
    for(int row = 0; row < grid.length; row++){
      for(int columns = 0; columns <= 3; columns++ ) {
        if((grid[row][columns] == 'X') && ((grid[row][columns + 1] == 'X')) && (grid[row][columns + 2] == 'X') && (grid[row][columns + 3] == 'X')) {
          return true; 
        }
          if((grid[row][columns] == 'O') && (grid[row][columns + 1] == 'O') && (grid[row][columns + 2] == 'O') && (grid[row][columns + 3] == 'O')) {
          return true;
              }
            }
          }
          return false;
        }
 
 
  public static boolean Vertical(char[][] grid) { 
    for (int columns = 0; columns < grid[0].length; columns++) {
      for(int row = 0; row <= 2; row++){ 
        if((grid[row][columns] == 'X') && (grid[row + 1][columns] == 'X') && (grid[row + 2][columns] == 'X') && (grid[row + 3][columns] == 'X')) {
          return true;
          } if((grid[row][columns] == 'O') && (grid[row + 1][columns] == 'O') && (grid[row + 2][columns] == 'O') && (grid[row + 3][columns] == 'O')) {
            return true;
            }
      }
  } return false;
}
 
   public static boolean Diagonals(char[][] grid) {
     for(int row = 0; row <= 2; row++) {
       for(int columns = 0; columns <= 3; columns++) {
 
       if((grid[row][columns] == 'X') && (grid[row + 1][columns + 1] == 'X') && (grid[row + 2][columns + 2] == 'X') && (grid[row + 3][columns + 3] == 'X')) {
         return true;
       } if((grid[row][columns] == 'O') && (grid[row + 1][columns + 1] == 'O') && (grid[row + 2][columns + 2] == 'O') && (grid[row + 3][columns + 3] == 'O')) {
         return true;
       } 
     }
   }
       for(int row = grid.length - 1; row >= 3; row--) {
         for(int columns = 0; columns <= 3; columns++){
           if((grid[row][columns] == 'X') && (grid[row - 1][columns + 1] == 'X') && (grid[row - 2][columns + 2] == 'X') && (grid[row - 3][columns + 3] == 'X')) {
             return true;
           } if((grid[row][columns] == 'O') && (grid[row - 1][columns + 1] == 'O') && (grid[row - 2][columns + 2] == 'O') && (grid[row - 3][columns + 3] == 'O')) {
            return true;
           } 
         } 
       } return false;
    }
}

    I resolved it sorry for wasting your time, it was just a problem with my breaks and for loops.
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