-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathmineSweeper.html
331 lines (302 loc) · 9.57 KB
/
mineSweeper.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
<!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">
<title>扫雷</title>
<style>
.main {
width: 1000px;
margin: 0 auto;
}
.restart {
cursor: pointer;
font-size: 16px;
margin-left: 20px;
}
.container {
width: 752px;
padding: 20px;
background-color: #ccc;
border-radius: 5px;
position: relative;
}
.mask {
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
z-index: 100;
display: none;
}
#canvas {
background-color: #bbb;
}
</style>
</head>
<body>
<div class="main">
<h3>扫雷 <span class="restart" onclick="mineSweeper.restart()">重新开始</span></h3>
<div class="container">
<div class="mask"></div>
<canvas id="canvas"></canvas>
</div>
</div>
<script>
class MineSweeper {
constructor() {
this.canvas = document.querySelector('#canvas')
this.mask = document.querySelector('.mask')
this.ctx = canvas.getContext('2d')
this.row = 20
this.col = 30
this.cellWidth = 25
this.cellHeight = 25
this.width = this.col * this.cellWidth
this.height = this.row * this.cellHeight
this.canvas.width = this.width
this.canvas.height = this.height
// 不同数字使用的不同颜色
this.colors = [
'#FF7F00',
'#00FF00',
'#FF0000',
'#00FFFF',
'#0000FF',
'#8B00FF',
'#297b83',
'#0b0733'
]
this.mineTotal = 0 // 地雷总数
this.cellTotal = this.row * this.col // 单元格总数
// 方向数组
this.direction = [
-this.col, // 上
this.col, // 下
-1, // 左
1, // 右
-this.col - 1, // 左上
this.col - 1, // 左下
-this.col + 1, // 右上
this.col + 1 // 右下
]
this.restart()
// 监听点击事件
this.canvas.addEventListener('click', (e) => {
const cellIndex = this.calcMouseCell(e)
const cellValue = this.datas[cellIndex]
// 已标记和已标记的单元格都不能点击
if (this.mark[cellIndex] === 0) {
if (cellValue === -1) {
this.gameOver(cellIndex)
} else {
// 如果当前单元格的值为 0，则将周围的8个方向未点开的单元格都自定点开，并且递归
if (cellValue === 0) {
this.openCell(cellIndex)
} else {
this.mark[cellIndex] = 1
this.cellTotal--
}
this.draw()
}
}
})
// 自定义canvas右键，用来标记和解除标记
this.canvas.oncontextmenu = (e) => {
if (e.button === 2) {
const cellIndex = this.calcMouseCell(e)
// 判断是否已经点开，没点开就标记
if (this.mark[cellIndex] === 1) {
return false
}
if (this.mark[cellIndex] === 0) {
this.mark[cellIndex] = 2
} else {
this.mark[cellIndex] = 0
}
this.draw()
}
return false
}
}
restart() {
this.mineTotal = 0
this.cellTotal = this.row * this.col
this.mask.style.display = 'none'
// -1 为地雷
this.datas = new Array(this.cellTotal).fill(0).map(v => {
if (Math.random() > 0.8) {
this.mineTotal++
return -1
}
return 0
})
this.mark = new Array(this.cellTotal).fill(0) // 0 为未点开， 1 为点开， 2 为已标记
this.calcRound()
// 随机选择一个 0 的位置进行自动点开，作为起始位置
let randomIndex = Math.random() * this.datas.length | 0
while(this.datas[randomIndex] !== 0) {
randomIndex = Math.random() * this.datas.length | 0
}
this.openCell(randomIndex)
this.draw()
}
// 递归打开数字为 0 的单元格的相邻单元格
openCell(cellIndex) {
const { datas, mark, direction } = this
mark[cellIndex] = 1
this.cellTotal--
for (let d of direction) {
const newIndex = cellIndex + d
if (this.isCross(cellIndex, newIndex, d, this.col, datas.length) || mark[newIndex] !== 0) continue
if (datas[newIndex] === 0) {
this.openCell(newIndex)
} else {
mark[newIndex] = 1
this.cellTotal--
}
}
}
// 根据鼠标事件得到点击位置
calcMouseCell(e) {
const row = e.offsetY / this.cellHeight | 0
const col = e.offsetX / this.cellWidth | 0
return row * this.col + col
}
// 计算地雷附近的提示数字
calcRound() {
const { datas, direction } = this
for (let i = 0; i < datas.length; i++) {
if (datas[i] !== -1) {
for (let d of direction) {
const newIndex = i + d
// 边界判断
if (this.isCross(i, newIndex, d, this.col, datas.length)) continue
if (datas[newIndex] === -1) {
datas[i]++
}
}
}
}
}
// 单元格的边界判断
isCross(oriIndex, newIndex, d, col, maxLength) {
if (
newIndex < 0 || // 上边界
newIndex >= maxLength || // 下边界
(oriIndex % col === 0 && (d === -1 || d === -31 || d === 29)) || // 左边界
(oriIndex % col === col - 1 && (d === 1 || d === -29 || d === 31)) // 右边界
) {
return true
}
return false
}
// 绘制
draw() {
this.canvas.height = this.height
this.drawLine()
this.drawMine()
if (this.isComplete()) {
setTimeout(() => {
this.mask.style.display = 'block'
alert('游戏完成')
})
}
}
// 绘制地雷数据
drawMine() {
const { datas, ctx, mark, cellWidth, cellHeight, col } = this
ctx.font = 'bold 18px "微软雅黑"'
ctx.textAlign = 'center'
ctx.textBaseline = 'top'
for (let i = 0; i < datas.length; i++) {
if (mark[i] === 0) continue
const rowIndex = (i / col | 0) * cellWidth
const colIndex = i % col * cellHeight
if (mark[i] === 1) {
ctx.fillStyle = '#eee'
ctx.fillRect(colIndex + 2, rowIndex + 2, cellWidth - 4, cellHeight - 4)
// 不为 0 才显示数字
if (datas[i]) {
ctx.fillStyle = this.colors[datas[i] - 1]
ctx.fillText(datas[i], colIndex + 12, rowIndex + 6)
}
} else {
ctx.fillStyle = '#000'
ctx.fillText('?', colIndex + 12, rowIndex + 6)
}
}
}
// 绘制网格线
drawLine() {
const { ctx, row, col, width, height, cellWidth, cellHeight } = this
for (let i = 0; i <= row; i++) {
ctx.moveTo(0, i * cellWidth)
ctx.lineTo(width, i * cellWidth)
}
for (let i = 0; i <= col; i++) {
ctx.moveTo(i * cellHeight, 0)
ctx.lineTo(i * cellHeight, height)
}
ctx.lineWidth = 3
ctx.strokeStyle = '#ddd'
ctx.stroke()
}
// 是否完成
isComplete() {
return this.cellTotal === this.mineTotal
}
/**
* 游戏结束将所有的地雷显示
* 1、正确的标记不动
* 2、将错误的标记打为红色的 X
* 3、将未标记的地雷显示 *
* 4、最后点击的地雷cell标记为红色背景
*/
gameOver(lastCell) {
this.canvas.height = this.height
this.drawLine()
const { datas, ctx, mark, cellWidth, cellHeight, col } = this
ctx.font = 'bold 18px "微软雅黑"'
ctx.textAlign = 'center'
ctx.textBaseline = 'top'
for (let i = 0; i < datas.length; i++) {
const rowIndex = (i / col | 0) * cellWidth
const colIndex = i % col * cellHeight
if (mark[i] === 1) {
ctx.fillStyle = '#eee'
ctx.fillRect(colIndex + 2, rowIndex + 2, cellWidth - 4, cellHeight - 4)
if (datas[i]) {
ctx.fillStyle = this.colors[datas[i] - 1]
ctx.fillText(datas[i], colIndex + 12, rowIndex + 6)
}
} else {
if (datas[i] === -1) {
ctx.fillStyle = '#000'
if (mark[i] === 2) {
ctx.fillText('?', colIndex + 12, rowIndex + 6)
} else {
if (i === lastCell) {
ctx.fillStyle = 'red'
ctx.fillRect(colIndex + 2, rowIndex + 2, cellWidth - 4, cellHeight - 4)
ctx.fillStyle = '#000'
ctx.fillText('*', colIndex + 13, rowIndex + 9)
} else {
ctx.fillText('*', colIndex + 13, rowIndex + 9)
}
}
} else if (mark[i] === 2) {
ctx.fillStyle = 'red'
ctx.fillText('x', colIndex + 12, rowIndex + 4)
}
}
}
this.mask.style.display = 'block'
}
}
var mineSweeper = new MineSweeper()
</script>
</body>
</html>