Minesweeper is a classic video game created in 1990’s., The goal of this game is to find all the squares which dont have mines underneath.
The game is designed with the logic of each squares or cells have following rules.
Each square may be any one of the following:
- Contains a Mine which will explode and end the game, when uncovered.
- Contains an empty cell, which can be uncovered or not.
- Contains a number, which is the count of all the mines adjacent to it.
If the player clicks on the mine, the game ends.
The following is the implementation in Java of Minesweeper game, can be directly run in any version of Java greater than 1.4.
Note: Please include the jpg/png files in appropriate location as mentioned in the java code, to see your Minesweeper game working fine.
InitScreen.java
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import java.awt.BorderLayout; import java.awt.Color; import java.awt.Dimension; import java.awt.GridLayout; import java.awt.Image; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import java.util.Random; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JMenu; import javax.swing.JMenuBar; import javax.swing.JMenuItem; import javax.swing.JPanel; /** * Author: Karthick * tutorialflow.com */ class InitScreen implements ActionListener, MouseListener { private JFrame screen = null; private JButton smiley = new JButton(""); private JPanel composite = new JPanel(); private JPanel topPanel = new JPanel(); ImageIcon smileyImageIcon = null; ImageIcon tImageIcon = null; ImageIcon pitImageIcon = null; ImageIcon lossImageIcon = null; ImageIcon cryImageIcon = null; ImageIcon oneImageIcon = null; ImageIcon twoImageIcon = null; ImageIcon threeImageIcon = null; ImageIcon fourImageIcon = null; ImageIcon fiveImageIcon = null; public InitScreen() { screen = new JFrame("MineSweeper by Karthick, TutorialFlow.com"); screen.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); screen.setVisible(true); screen.setResizable(false); screen.setJMenuBar(createMenuBar()); loadMinesweeperImages(); composite.setLayout(new BorderLayout()); smiley.setPreferredSize(new Dimension(25, 25)); smiley.setIcon(smileyImageIcon); topPanel.add(smiley); composite.add(topPanel, BorderLayout.NORTH); smiley.addActionListener(this); smiley.addMouseListener(this); arrangeButtons(); screen.add(composite); screen.pack(); } public void loadMinesweeperImages() { smileyImageIcon = getScaledImage("C:\\Patches\\images\\smiley.png"); tImageIcon = getScaledImage("C:\\images\\t.png"); pitImageIcon = getScaledImage("C:\\images\\pit.png"); lossImageIcon = getScaledImage("C:\\images\\loss.png"); cryImageIcon = getScaledImage("C:\\images\\cry.png"); oneImageIcon = getScaledImage("C:\\images\\1.png"); twoImageIcon = getScaledImage("C:\\images\\2.png"); threeImageIcon = getScaledImage("C:\\images\\3.png"); fourImageIcon = getScaledImage("C:\\images\\4.png"); fiveImageIcon = getScaledImage("C:\\images\\5.png"); } public JMenuBar createMenuBar() { JMenuBar mBar = new JMenuBar(); JMenu game = new JMenu("Game"); JMenu help = new JMenu("Help"); final JMenuItem miNew = new JMenuItem("New"); final JMenuItem miBeg = new JMenuItem("Beginner"); final JMenuItem miInter = new JMenuItem("Intermediate"); final JMenuItem miExp = new JMenuItem("Expert"); final JMenuItem miExit = new JMenuItem("Exit"); final JMenuItem about = new JMenuItem("About MineSweeper...."); game.add(miNew); game.add(miBeg); game.add(miInter); game.add(miExp); game.add(miExit); help.add(about); ActionListener MENULSTNR = new ActionListener() { public void actionPerformed(ActionEvent ae) { if (miNew == ae.getSource()) { btnwdth = 10; btnhgt = 10; mines = 10; reset(); } if (miBeg == ae.getSource()) { btnwdth = 12; btnhgt = 12; mines = 12; reset(); } if (miInter == ae.getSource()) { btnwdth = 15; btnhgt = 15; mines = 50; reset(); } if (miExp == ae.getSource()) { btnwdth = 24; btnhgt = 30; mines = 80; reset(); } if (miExit == ae.getSource()) { if (screen != null) { screen.dispose(); } System.exit(0); } if (about == ae.getSource()) { System.out.println(" Karthick"); } } }; miNew.addActionListener(MENULSTNR); miBeg.addActionListener(MENULSTNR); miInter.addActionListener(MENULSTNR); miExp.addActionListener(MENULSTNR); miExit.addActionListener(MENULSTNR); about.addActionListener(MENULSTNR); mBar.add(game); mBar.add(help); return mBar; } private int btnwdth = 10; private int btnhgt = 10; private int mines = 8; int mineArray[][]; JButton button[][]; JPanel minespan = null; public void arrangeButtons() { mineArray = new int[btnwdth][btnhgt]; button = new JButton[btnwdth][btnhgt]; boolean starting = true; if (minespan != null) { composite.remove(minespan); minespan = null; starting = false; } minespan = new JPanel(); minespan.setLayout(new GridLayout(btnwdth, btnhgt)); for (int i = 0; i < btnwdth; i++) { for (int j = 0; j < btnhgt; j++) { mineArray[i][j] = 0; button[i][j] = new JButton(""); button[i][j].setBackground(Color.WHITE); button[i][j].setPreferredSize(new Dimension(16, 16)); button[i][j].addActionListener(this); button[i][j].addMouseListener(this); minespan.add(button[i][j]); } } minespan.setVisible(true); composite.add(minespan, BorderLayout.CENTER); if (starting) { minesFormat(button); } screen.pack(); } public void reset() { smiley.setIcon(smileyImageIcon); // btnwdth+=1; arrangeButtons(); for (int i = 0; i < btnwdth; i++) { for (int j = 0; j < btnhgt; j++) { mineArray[i][j] = 0; button[i][j].addActionListener(this); button[i][j].addMouseListener(this); button[i][j].setText(""); button[i][j].setBackground(Color.WHITE); //button[i][j].setIcon(tImageIcon); } } minesFormat(button); System.out.println(""); System.out.println(""); } public void minesFormat(JButton button[][]) { int mine[] = getRndmNos(btnwdth, btnhgt, mines); int count = 1; for (int i = 0; i < btnwdth; i++) { for (int j = 0; j < btnhgt; j++) { for (int k = 0; k < mine.length && mine[k] != 0; k++) { if (count == mine[k]) { mineArray[i][j] = 9; } } count++; } } int boxcount = 0; for (int i = 0; i < btnwdth; i++) { for (int j = 0; j < btnhgt; j++) { boxcount = 0; if (mineArray[i][j] != 9) { if (i > 0 && j > 0) { if (mineArray[i - 1][j - 1] == 9) boxcount++; } if (i > 0) { if (mineArray[i - 1][j] == 9) boxcount++; } if (i > 0 && j < btnhgt - 1) { if (mineArray[i - 1][j + 1] == 9) boxcount++; } if (i < btnwdth - 1 && j > 0) { if (mineArray[i + 1][j - 1] == 9) boxcount++; } if (i < btnwdth - 1) { if (mineArray[i + 1][j] == 9) boxcount++; } if (i < btnwdth - 1 && j < btnhgt - 1) { if (mineArray[i + 1][j + 1] == 9) boxcount++; } if (j > 0) { if (mineArray[i][j - 1] == 9) boxcount++; } if (j < btnhgt - 1) { if (mineArray[i][j + 1] == 9) boxcount++; } mineArray[i][j] = boxcount; } } } for (int i = 0; i < btnwdth; i++) { for (int j = 0; j < btnhgt; j++) { System.out.print(" " + mineArray[i][j]); } System.out.println(""); } } public int[] getRndmNos(int btnwdth, int btnhgt, int mines) { Random rand = new Random(); int rndmines[] = new int[btnwdth * btnhgt]; boolean in = false; int count = 0; while (count < mines) { int rndno = (int) ((btnwdth * btnhgt) * (rand.nextDouble())) + 1; in = false; for (int i = 0; i < count; i++) { if (rndmines[i] == rndno) { in = true; break; } } if (!in) { rndmines[count++] = rndno; } } return rndmines; } public void actionPerformed(ActionEvent ae) { if (ae.getSource() == smiley) { reset(); } else { for (int i = 0; i < btnwdth; i++) for (int j = 0; j < btnhgt; j++) { if (button[i][j] == ae.getSource()) { if (mineArray[i][j] == 9) { for (int k = 0; k < btnwdth; k++) { for (int l = 0; l < btnhgt; l++) { if (mineArray[k][l] == 9) { button[k][l].setIcon(pitImageIcon); } button[k][l].removeActionListener(this); button[k][l].removeMouseListener(this); } } } if (mineArray[i][j] == 1) { button[i][j].setIcon(oneImageIcon); } if (mineArray[i][j] == 2) { button[i][j].setIcon(twoImageIcon); } if (mineArray[i][j] == 3) { button[i][j].setIcon(threeImageIcon); } if (mineArray[i][j] == 4) { button[i][j].setIcon(fourImageIcon); } if (mineArray[i][j] == 5) { button[i][j].setIcon(fiveImageIcon); } if (mineArray[i][j] == 0) { findAllEmpty(i, j); } } } } } public void findAllEmpty(int boxX, int boxY) { int arrX[] = new int[(btnwdth) * (btnhgt)]; int arrY[] = new int[(btnwdth) * (btnhgt)]; int cntEmpty = 0; for (int i = 0; i < ((btnwdth) * (btnhgt)); i++) { arrX[i] = -1; arrY[i] = -1; } arrX[cntEmpty] = boxX; arrY[cntEmpty] = boxY; cntEmpty++; for (int i = 0; i < cntEmpty; i++) { if (arrX[i] > 0) { int xxX = arrX[i] - 1; int yyY = arrY[i]; if (mineArray[xxX][yyY] == 0) { if (!findIn(arrX, arrY, cntEmpty, xxX, yyY)) { arrX[cntEmpty] = xxX; arrY[cntEmpty] = yyY; cntEmpty++; } } } if (arrX[i] < (btnwdth - 1)) { int xxX = arrX[i] + 1; int yyY = arrY[i]; if (mineArray[xxX][yyY] == 0) { if (!findIn(arrX, arrY, cntEmpty, xxX, yyY)) { arrX[cntEmpty] = xxX; arrY[cntEmpty] = yyY; cntEmpty++; } } } if (arrY[i] > 0) { int xxX = arrX[i]; int yyY = arrY[i] - 1; if (mineArray[xxX][yyY] == 0) { if (!findIn(arrX, arrY, cntEmpty, xxX, yyY)) { arrX[cntEmpty] = xxX; arrY[cntEmpty] = yyY; cntEmpty++; } } } if (arrY[i] < (btnhgt - 1)) { int xxX = arrX[i]; int yyY = arrY[i] + 1; if (mineArray[xxX][yyY] == 0) { if (!findIn(arrX, arrY, cntEmpty, xxX, yyY)) { arrX[cntEmpty] = xxX; arrY[cntEmpty] = yyY; cntEmpty++; } } } } for (int k = 0; k < cntEmpty; k++) { button[arrX[k]][arrY[k]].setBackground(new Color(200, 200, 250)); } } public boolean findIn(int[] arrX, int[] arrY, int cntEmpty, int xxX, int yyY) { int j = 0; for (j = 0; j < cntEmpty; j++) { if ((arrX[j] == (xxX)) && (arrY[j] == (yyY))) { return true; } } return false; } public void mouseClicked(MouseEvent arg0) { // TODO Auto-generated method stub } public void mousePressed(MouseEvent me) { for (int i = 0; i < btnwdth; i++) for (int j = 0; j < btnhgt; j++) { if (button[i][j] == me.getSource()) { smiley.setIcon(cryImageIcon); } } if (me.getSource() == smiley) { smiley.setIcon(cryImageIcon); } } public void mouseReleased(MouseEvent me) { // TODO Auto-generated method stub if (me.getSource() == smiley) { smiley.setIcon(smileyImageIcon); } for (int i = 0; i < btnwdth; i++) for (int j = 0; j < btnhgt; j++) { if (button[i][j] == me.getSource()) { if (mineArray[i][j] == 9) { smiley.setIcon(lossImageIcon); } else { smiley.setIcon(smileyImageIcon); } } } } public ImageIcon getScaledImage(String imageString) { ImageIcon imageIcon = new ImageIcon(imageString); Image image = imageIcon.getImage(); Image newimg = image.getScaledInstance(20, 20, java.awt.Image.SCALE_SMOOTH); imageIcon = new ImageIcon(newimg); return imageIcon; } public void mouseEntered(MouseEvent arg0) { // TODO Auto-generated method stub } public void mouseExited(MouseEvent arg0) { // TODO Auto-generated method stub } } |
Driver.java
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public class Driver { /** * @param args */ public static void main(String[] args) { InitScreen intzeScrn=new InitScreen(); } } |