js扫雷游戏
Gnijooo 人气:0界面
考虑到简单，一般，困难三个扫雷区域的格子数都不同，所以界面上的扫雷区域是用js动态生成。
先搭好整体html框架：
<div class="container"> <div class="level"> <button class="select">简单</button> <button>一般</button> <button>困难</button> <button>重新开始</button> </div> <div class="mine"> //扫雷区域 </div> <div class="last">总共雷数 ： <span class="mineNum"></span></div> </div>
首先写一个MineSweeper()构造方法：
function MineSweeper(tr, td, mineNum) {
this.tr = tr; //行
this.td = td; //列
this.mineNum = mineNum; //雷数
this.area = []; //存取每个格子信息
this.doms = []; //存储格子DOM,用来动态创建DOM
this.lastMineNum = mineNum; //剩余雷数
this.parent = document.querySelector('.mine');
this.num = document.querySelector('.last .mineNum');
}扫雷区域用一个二维数组表示并存储：
/* * 扫雷游戏区域area(二维数组) * [ * [type: mine/number, x1, y1], * [type: mine/number, x2, y2], * ... , * [type: mine/number, xn, yn] * ] */
其中type有两个值，mine表示当前格子是一个雷；number表示当前格子是一个数字。
在构造方法的原型上添加方法创建DOM表格，用来动态生成扫雷区域界面：
MineSweeper.prototype.create = function() {
var _this = this;
var table = document.createElement('table');
for(var i = 0; i < this.tr; i++) {
var trDom = document.createElement('tr');
//创建行
this.doms[i] = [];
for(var j = 0; j < this.td; j++) {
//创建列
var tdDom = document.createElement('td');
this.doms[i][j] = tdDom;
trDom.appendChild(tdDom); //往行中添加列
}
table.appendChild(trDom);//往table中添加行
}
this.parent.appendChild(table); //将table添加到界面
};JS
function MineSweeper(tr, td, mineNum) {
this.tr = tr; //行
this.td = td; //列
this.mineNum = mineNum;
this.area = [];
this.doms = [];
this.lastMineNum = mineNum;
this.parent = document.querySelector('.mine');
this.num = document.querySelector('.last .mineNum');
}
//初始化
MineSweeper.prototype.init = function() {
var rn = this.randomNum(); //获得type: mine 的索引
var n = 0; //记录格子索引
for(var i = 0; i < this.tr; i++) {
this.area[i] = [];
for(var j = 0; j < this.td; j++) {
n ++;
if(rn.indexOf(n) !== -1) {
this.area[i][j] = {
type: 'mine',
x: j,
y: i
};
} else {
this.area[i][j] = {
type: 'number',
x: j,
y: i,
value: 0
};
}
}
}
// console.log(this.area);
this.num.innerHTML = this.mineNum; //初始化雷数
this.parent.oncontextmenu = function() {
return false; //阻止右击菜单事件
}
this.updateNumber();
//创建表格
this.parent.innerHTML = "";
this.create();
}
//创建DOM表格
MineSweeper.prototype.create = function() {
var _this = this;
var table = document.createElement('table');
for(var i = 0; i < this.tr; i++) {
var trDom = document.createElement('tr');
this.doms[i] = [];
for(var j = 0; j < this.td; j++) {
var tdDom = document.createElement('td');
this.doms[i][j] = tdDom;
trDom.appendChild(tdDom);
tdDom.pos = [i, j];
tdDom.onmousedown = function(event) {
if(event.button === 0) { //鼠标左键
var curArea = _this.area[this.pos[0]][this.pos[1]];
console.log(curArea)
if(curArea.type === 'mine') {
// console.log('踩到雷了！')
this.className = 'mine';
_this.gameOver(this);
} else {
// console.log('is number')
if(!curArea.value) { //踩到0，出现一大片
// console.log(0);
this.className = 'select'; //先显示自己
this.innerHTML = '';
function getAllZero(area) {
var around = _this.mineAround(area); //找其周围的格子
for(var i = 0; i < around.length; i++) {
var x = around[i][0]; //行
var y = around[i][1]; //列
_this.doms[x][y].className = 'select';
if(!_this.area[x][y].value) {
if(!_this.doms[x][y].isHas) {
_this.doms[x][y].isHas = true; //标记被找过的元素,避免格子重复重复被调用,导致内存资源被滥用
arguments.callee(_this.area[x][y])
}
} else {
_this.doms[x][y].innerHTML = _this.area[x][y].value;
}
}
}
getAllZero(curArea);
} else {
this.className = 'select';
this.innerHTML = curArea.value;
}
}
} else if(event.button === 2) { //鼠标右键
this.className = this.className == 'flag'? '':'flag';
//标记小旗子，则剩余雷数-1
if(this.className === 'flag') {
_this.num.innerHTML = --_this.lastMineNum;
} else {
_this.num.innerHTML = ++_this.lastMineNum;
}
}
}
}
table.appendChild(trDom);
}
this.parent.appendChild(table);
};
//生成指定数量的不重复的数字
MineSweeper.prototype.randomNum = function() {
var mineArr = new Array(this.tr*this.td); //该数组用来存储所有格子下标
for(var i = 0; i < mineArr.length; i++) {
mineArr[i] = i;
}
mineArr.sort(function() {return 0.5 - Math.random()}); //将数组乱序排序
return mineArr.slice(0, this.mineNum); //随机取得放置雷的下标
};
//找目标格子周围的格子, 雷周围的格子都需要number++
MineSweeper.prototype.mineAround = function(target) {
var x = target.x;
var y = target.y;
var result = []; //二位数组,存储周围格子的坐标
for(var i = x-1; i <= x+1; i++) {
for(var j = y-1; j <= y+1; j++) {
if(
i < 0 || j < 0 || i > this.td - 1 || j > this.tr - 1 || //排除四个角
(i == x && j == y) || //排除周围是雷
this.area[j][i].type === 'mine'
){
continue;
}
result.push([j, i]);
}
}
return result;
};
//更新所有数字
MineSweeper.prototype.updateNumber = function() {
for(var i = 0; i < this.tr; i++) {
for(var j = 0; j < this.td; j++) {
if(this.area[i][j].type == 'number') {
continue;
}
var nums = this.mineAround(this.area[i][j]); //获取雷周围的格子
for(var k = 0; k < nums.length; k++) {
//雷周围的格子的number都要+1
this.area[nums[k][0]][nums[k][1]].value += 1;
}
}
}
};
//gameOver
MineSweeper.prototype.gameOver = function(downMine) {
for(var i = 0; i < this.tr; i++) {
for(var j = 0; j < this.td; j++) {
if(this.area[i][j].type === 'mine') {
this.doms[i][j].className = 'mine';
}
this.doms[i][j].onmousedown = null;
}
}
if(downMine) {
downMine.style.backgroundColor = '#f40';
}
}
function startGame() {
var btn = document.querySelectorAll('.container .level>button');
var arr = [[10,10,15],[15,15,40],[20,20,80]];
var select = 0; //当前选中状态的按钮
var mine = null;
for(let i = 0; i < btn.length - 1; i++) {
console.log(i);
console.log(arr);
btn[i].onclick = function(e) {
btn[select].className = '';
this.className = 'select';
select = i;
mine = new MineSweeper(...arr[i]);
console.log(arr[i]);
mine.init();
}
}
btn[0].onclick();
btn[3].onclick = function() {
mine.init();
}
}
startGame();CSS
.container {
margin: 30px auto;
text-align: center;
}
.container .level button {
background-color: #e5c1cd;
outline-style: none;
border: none;
cursor: pointer;
color: #fff;
}
.container .level button.select {
background-color: #b6b4c2;
}
.container .mine table {
border-spacing: 1px;
margin: 10px auto;
}
.container .mine table td {
width: 18px;
height: 18px;
padding: 0;
background-color: #bfb8da;
border: 2px solid;
border-color: #ebd7d4 #a56781 #a56781 #ebd7d4;
text-align: center;
line-height: 16px;
font-weight: bold;
}
.container .mine table td.select,
.container .mine table td.mine {
background-color: #bfb8da;
border: 1px solid #ebd7d4;
}
.container .mine table td.mine {
background-image: url("../image/mine.png");
background-repeat: no-repeat;
background-size: cover;
}
.container .mine table td.flag {
background-image: url("../image/flag.png");
background-repeat: no-repeat;
background-size: cover;
}
.container .last {
color: #d87f81;
}HTML
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>MineSweeper</title> <link rel="stylesheet" href="./css/index.css"> </head> <body> <div class="container"> <div class="level"> <button class="select">简单</button> <button>一般</button> <button>困难</button> <button>重新开始</button> </div> <div class="mine"> </div> <div class="last">总共雷数 ： <span class="mineNum"></span></div> </div> <script src="./js/index.js"></script> </body> </html>
更新数字
遍历扫雷区域数组，当遇到雷时，取到其周围的格子，如果是数字，则number都+1；如果是雷，则该格子不作操作。
MineSweeper.prototype.updateNumber = function() {
for(var i = 0; i < this.tr; i++) {
for(var j = 0; j < this.td; j++) {
if(this.area[i][j].type == 'number') {
continue; //遇到数字格子跳过,不需要取其周围的格子
}
var nums = this.mineAround(this.area[i][j]); //获取雷周围的格子
for(var k = 0; k < nums.length; k++) {
//雷周围的格子的number都要+1
this.area[nums[k][0]][nums[k][1]].value += 1;
}
}
}
};实现效果：
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