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minesweeper
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Eduardo Zardo 2022-04-19 19:18:32 -03:00
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MIT License
Copyright (c) 2021 Eduardo Zardo
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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# Minesweeper
A minesweeper game made with pure HTML, CSS and Javascript

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<svg xmlns="http://www.w3.org/2000/svg" width="15" height="15" viewBox="0 0 24 24" fill="red" stroke="red" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-flag"><path d="M4 15s1-1 4-1 5 2 8 2 4-1 4-1V3s-1 1-4 1-5-2-8-2-4 1-4 1z"></path><line x1="4" y1="22" x2="4" y2="15"></line></svg>
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="style.css">
<title>Minesweeper</title>
</head>
<body>
<div id="container">
<div id="difficulty-container">
<label for="difficulty">Difficulty:</label>
<select name="difficulty" id="difficulty">
<option value="easy" selected>Easy</option>
<option value="medium">Medium</option>
<option value="hard">Hard</option>
</select>
</div>
<div id="board-container">
<div id="board-header" class="hide">
<div id="flags-count-container" class="hide">
<span id="flags-count">0</span>
<img src="assets/icons/flag.svg">
</div>
<div id="result-container" class="hide">
<span id="result"></span>
</div>
<div id="timer-container" class="hide">
<p id="timer">00:00</p>
</div>
</div>
<div id="board" class="hide"></div>
</div>
<button type="button" id="start-game">Start</button>
</div>
<script src="main.js"></script>
</body>
</html>

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const difficulties = {
'easy': {
'size': [10, 10],
'mines': 10,
},
'medium': {
'size': [16, 16],
'mines': 40,
},
'hard': {
'size': [16, 30],
'mines': 99,
},
};
const squareClassNames = {
'.': 'unopened',
'B': 'unopened',
'F': 'unopened flag',
'BF': 'unopened flag',
'X': 'bomb',
'0': 'opened empty',
'1': 'opened one',
'2': 'opened two',
'3': 'opened three',
'4': 'opened four',
'5': 'opened five',
'6': 'opened six',
'7': 'opened seven',
'8': 'opened eight',
};
const squareTexts = {
'.': '',
'B': '',
'F': '<img src="assets/icons/flag.svg">',
'BF': '<img src="assets/icons/flag.svg">',
'X': '<img src="assets/icons/mine.png">',
'0': '',
'1': '1',
'2': '2',
'3': '3',
'4': '4',
'5': '5',
'6': '6',
'7': '7',
'8': '8',
};
const directions = [
[-1, -1],
[-1, 0],
[-1, 1],
[0, -1],
[0, 0],
[0, 1],
[1, -1],
[1, 0],
[1, 1]
];
let board;
let size;
let mines;
let flagCount;
let timeInSeconds;
let timerInterval;
let unopenedCount;
let bombRevealInterval;
let squareListeners = {};
let isFirstClick = true;
function initializeBoard() {
board = [];
unopenedCount = 0;
for (let i = 0; i < size[0]; i++) {
const row = [];
for (let j = 0; j < size[1]; j++) {
row.push('.');
unopenedCount += 1;
}
board.push(row);
}
}
function generateMines(firstClickX, firstClickY) {
let i = 0;
while (i < mines) {
const mineX = randomInt(0, size[0]);
const mineY = randomInt(0, size[1]);
console.log(mineX);
console.log(mineY);
if (!((mineX >= firstClickX - 1 && mineX <= firstClickX + 1 && mineY >= firstClickY - 1 && mineY <= firstClickY + 1) || board[mineX][mineY] === 'B')) {
board[mineX][mineY] = 'B';
i++;
unopenedCount -= 1;
}
}
}
function countMinesAroundSquare(row, column) {
let mines = 0;
for (const direction of directions) {
const rowToCheck = row + direction[0];
const columnToCheck = column + direction[1];
if (rowToCheck < 0 || rowToCheck >= size[0] || columnToCheck < 0 || columnToCheck >= size[1]) {
continue;
}
if (board[rowToCheck][columnToCheck].includes('B')) {
mines += 1;
}
}
return mines;
}
function stopGame(hasWon) {
if (timerInterval) {
clearInterval(timerInterval);
}
for (const square of document.getElementsByClassName('square')) {
const listener = squareListeners[square.id];
square.removeEventListener('mousedown', listener);
}
squareListeners = {};
const gameResult = document.getElementById('result');
if (hasWon) {
gameResult.innerText = 'You win!';
gameResult.className = 'win';
} else {
gameResult.innerText = 'You lose.';
gameResult.className = 'defeat';
}
document.getElementById('result-container').classList.remove('hide');
}
function hasWon() {
return unopenedCount === 0;
}
function revealSquare(row, column) {
const mineCount = countMinesAroundSquare(row, column);
if (board[row][column] == 'F') {
flagCount += 1;
renderFlagsCount();
}
if (board[row][column] == '.') {
unopenedCount -= 1;
}
board[row][column] = mineCount.toString();
const squareElement = document.getElementById(`${row}-${column}`);
squareElement.innerHTML = squareTexts[board[row][column]];
squareElement.className = 'square ' + squareClassNames[board[row][column]];
if (hasWon()) {
stopGame(true);
}
if (mineCount === 0) {
for (const direction of directions) {
const rowToOpen = row + direction[0];
const columnToOpen = column + direction[1];
if (rowToOpen < 0 || rowToOpen >= size[0] || columnToOpen < 0 || columnToOpen >= size[1]) {
continue;
}
if (['.', 'F'].includes(board[rowToOpen][columnToOpen])) {
revealSquare(rowToOpen, columnToOpen);
}
}
}
}
function switchFlag(row, column) {
const squareValue = board[row][column];
if (['.', 'B'].includes(squareValue)) {
board[row][column] = squareValue === 'B' ? 'BF' : 'F';
flagCount -= 1;
renderFlagsCount();
const squareElement = document.getElementById(`${row}-${column}`);
squareElement.innerHTML = squareTexts[squareValue === 'B' ? 'BF' : 'F'];
squareElement.className = 'square ' + squareClassNames[squareValue === 'BF' ? 'B' : '.'];
} else if (['BF', 'F'].includes(squareValue)) {
board[row][column] = squareValue === 'BF' ? 'B' : '.';
flagCount += 1;
renderFlagsCount();
const squareElement = document.getElementById(`${row}-${column}`);
squareElement.innerHTML = squareTexts[squareValue === 'BF' ? 'B' : '.'];
squareElement.className = 'square ' + squareClassNames[squareValue === 'BF' ? 'B' : '.'];
}
}
function loseGame() {
const bombPositions = [];
for (let i = 0; i < size[0]; i++) {
for (let j = 0; j < size[1]; j++) {
if (['B', 'BF'].includes(board[i][j])) {
bombPositions.push(`${i}-${j}`);
}
}
}
bombRevealInterval = setInterval(() => {
if (bombPositions.length == 0) {
clearInterval(bombRevealInterval);
} else {
const squareElement = document.getElementById(bombPositions.shift());
squareElement.innerHTML = squareTexts['X'];
squareElement.className = 'square ' + squareClassNames['X'];
}
}, 100);
stopGame(false);
}
function configureSquareClickEvent(square) {
const onClick = event => {
const row = parseInt(square.id.split('-')[0]);
const column = parseInt(square.id.split('-')[1]);
if (event.which == 3) {
switchFlag(row, column);
} else {
if (isFirstClick) {
isFirstClick = false;
generateMines(row, column);
}
const squareValue = board[row][column];
switch (squareValue) {
case '.':
revealSquare(row, column);
break;
case 'B':
loseGame();
break;
}
}
}
squareListeners[square.id] = onClick;
square.addEventListener('mousedown', onClick);
}
function renderBoard() {
const boardElement = document.getElementById('board');
boardElement.innerHTML = '';
for (const row in board) {
const rowElement = document.createElement('div');
rowElement.classList.add('row');
for (const column in board[row]) {
const squareValue = board[row][column];
const squareElement = document.createElement('div');
squareElement.id = `${row}-${column}`;
squareElement.className = `square ${squareClassNames[squareValue]}`;
squareElement.innerHTML = squareTexts[squareValue];
configureSquareClickEvent(squareElement);
rowElement.appendChild(squareElement);
}
boardElement.appendChild(rowElement);
}
boardElement.classList.remove('hide');
document.getElementById('board-header').classList.remove('hide');
}
function renderFlagsCount() {
const flagsCountContainerElement = document.getElementById('flags-count-container');
const flagsCountElement = document.getElementById('flags-count');
flagsCountElement.innerText = flagCount;
flagsCountContainerElement.classList.remove('hide');
}
function renderResultText() {
const gameResult = document.getElementById('result');
gameResult.innerText = '';
document.getElementById('result-container').classList.add('hide');
}
function startTimer() {
timeInSeconds = 0;
document.getElementById('timer-container').classList.remove('hide');
const timer = document.getElementById('timer');
timer.innerText = '00:00';
if (timerInterval) {
clearInterval(timerInterval);
}
timerInterval = setInterval(function() {
timeInSeconds += 1;
const hours = Math.floor(timeInSeconds / 3600).toString();
const minutes = Math.floor((timeInSeconds % 3600) / 60).toString();
const seconds = (timeInSeconds % 60).toString();
let timerText = `${hours > 0 ? hours.padStart(2, '0') + ':' : ''}${minutes.padStart(2, '0')}:${seconds.padStart(2, '0')}`;
timer.innerText = timerText;
}, 1000);
}
function loadGame() {
isFirstClick = true;
initializeBoard();
renderBoard();
renderFlagsCount();
renderResultText();
startTimer();
}
document.getElementById('start-game').addEventListener('click', function() {
const difficulty = difficulties[document.getElementById('difficulty').value];
console.log(difficulty);
size = difficulty['size'];
mines = difficulty['mines'];
flagCount = mines;
if (bombRevealInterval) {
clearInterval(bombRevealInterval);
}
loadGame();
});
document.getElementById('board').addEventListener('contextmenu', function(e) {
e.preventDefault();
return false;
});
function randomInt(min, max) {
min = Math.ceil(min);
max = Math.floor(max);
return Math.floor(Math.random() * (max - min)) + min;
}

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@import url('https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,500;0,700;1,400&display=swap');
* {
padding: 0;
margin: 0;
outline: 0;
box-sizing: border-box;
}
body {
font: 400 16px Roboto, sans-serif;
background: radial-gradient(#777, #333);
color: #eee;
-webkit-font-smoothing: antialiased;
}
input, button, textarea {
font: 400 18px Roboto, sans-serif;
}
button {
cursor: pointer;
}
#container {
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
width: 100%;
height: 100vh;
}
#difficulty-container {
display: flex;
align-items: center;
justify-content: space-evenly;
margin-top: 16px;
}
#difficulty {
margin-left: 8px;
padding: 4px;
border: 0;
border-radius: 5px;
}
#board-container {
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
margin: 16px 16px 0 16px;
background: black;
border-radius: 8px;
}
#board-header {
display: flex;
align-items: center;
justify-content: space-between;
width: 100%;
margin-top: 10px;
padding: 0 8px;
}
#board {
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
margin: 4px;
border: 2px solid black;
}
#start-game {
margin-top: 16px;
padding: 4px 16px;
border: 0;
border-radius: 5px;
background: #0F0;
color: #555;
transition: all 1s ease;
}
#start-game:hover {
transform: scale(1.1) perspective(1px)
}
#start-game:active {
position: relative;
top: 4px;
}
.row {
display: flex;
align-items: center;
justify-content: center;
}
.square {
display: flex;
align-items: center;
justify-content: center;
width: 26px;
height: 26px;
border-top: 1px solid black;
border-left: 1px solid black;
color: #555;
}
.row .square:first-child {
border-left: 0;
}
.row:first-child .square {
border-top: 0;
}
.square:hover {
background: #CCC;
cursor: pointer;
}
.unopened {
background: #AAA;
}
.opened {
background: #EEE;
}
.bomb {
background: #E00;
}
.bomb img {
width: 20px;
height: 20px;
color: #FFF;
}
.one {
color: #00F;
}
.two {
color: #070;
}
.three {
color: #F00;
}
.four {
color: #007;
}
.five {
color: #700;
}
.six {
color: #077;
}
.seven {
color: #000;
}
.eight {
color: #777;
}
.win {
color: #0D0;
}
.defeat {
color: #D00;
}
.hide {
display: none !important;
}