# ===== CodeLab: JavaScript 小游戏⑧:扫雷网页版 =====
# 来源: https://aoerliang.dpdns.org/articles/game-js-minesweeper
# 以下代码片段按文章出现顺序拼接, 共 3 段
# ----- 片段 1 (javascript) -----
const ROWS = 9, COLS = 9, MINES = 10;
let board = [];
function buildBoard(safeR, safeC) {
board = Array.from({length: ROWS}, () => Array(COLS).fill(0));
const safe = new Set();
for (let r = safeR - 1; r <= safeR + 1; r++)
for (let c = safeC - 1; c <= safeC + 1; c++)
if (r >= 0 && r < ROWS && c >= 0 && c < COLS) safe.add(r * COLS + c);
let placed = 0;
while (placed < MINES) {
const r = Math.floor(Math.random() * ROWS);
const c = Math.floor(Math.random() * COLS);
if (board[r][c] === -1 || safe.has(r * COLS + c)) continue;
board[r][c] = -1; placed++;
}
for (let r = 0; r < ROWS; r++)
for (let c = 0; c < COLS; c++)
if (board[r][c] !== -1) {
let n = 0;
for (let dr = -1; dr <= 1; dr++)
for (let dc = -1; dc <= 1; dc++) {
const nr = r + dr, nc = c + dc;
if (nr >= 0 && nr < ROWS && nc >= 0 && nc < COLS && board[nr][nc] === -1) n++;
}
board[r][c] = n;
}
}
# ----- 片段 2 (javascript) -----
let revealed = Array.from({length: ROWS}, () => Array(COLS).fill(false));
let flags = Array.from({length: ROWS}, () => Array(COLS).fill(''));
function reveal(r, c) {
if (revealed[r][c] || flags[r][c] === 'F') return;
if (board[r][c] === -1) { revealed[r][c] = true; lost = true; return; }
const q = [[r, c]];
while (q.length) {
const [cr, cc] = q.shift();
if (revealed[cr][cc]) continue;
revealed[cr][cc] = true;
if (board[cr][cc] !== 0) continue;
for (let dr = -1; dr <= 1; dr++)
for (let dc = -1; dc <= 1; dc++) {
const nr = cr + dr, nc = cc + dc;
if (nr >= 0 && nr < ROWS && nc >= 0 && nc < COLS && !revealed[nr][nc])
q.push([nr, nc]);
}
}
}
# ----- 片段 3 (html) -----
扫雷
扫雷 左键翻开 · 右键插旗
点第一格开始