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| <div id="game-2048-container" style="max-width: 400px; margin: 20px auto; padding: 15px; border-radius: 8px; transition: all 0.3s ease; background: var(--card-bg); touch-action: none;">
<!-- 分数与控制区 -->
<div style="display: flex; justify-content: space-between; margin-bottom: 15px; font-family: 'Segoe UI', Arial;">
<div style="font-size: 24px; font-weight: bold; color: var(--text-color);">2048</div>
<div style="background: var(--primary-color); color: white; padding: 5px 10px; border-radius: 4px;">
分数: <span id="score-2048">0</span>
</div>
<div style="display: flex; gap: 5px;">
<!-- 按钮增大点击区域并添加触摸反馈 -->
<button id="undo-2048" style="background: var(--btn-bg); color: var(--btn-color); border: none; padding: 8px 12px; border-radius: 4px; cursor: pointer; opacity: 0.5; touch-action: manipulation;" disabled>
撤回
</button>
<button id="reset-2048" style="background: var(--btn-bg); color: var(--btn-color); border: none; padding: 8px 12px; border-radius: 4px; cursor: pointer; touch-action: manipulation;">
重置
</button>
</div>
</div>
<!-- 游戏棋盘 -->
<div id="game-2048-board" style="display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px;"></div>
<!-- 操作说明 -->
<div style="margin-top: 15px; font-size: 14px; color: var(--text-color); font-family: 'Segoe UI', Arial;">
<p>操作：方向键或滑动屏幕移动方块，相同数字碰撞将合并</p>
</div>
</div>
<script>
const container = document.getElementById('game-2048-container');
if (container) {
// 获取DOM元素
const boardEl = container.querySelector('#game-2048-board');
const scoreEl = container.querySelector('#score-2048');
const resetBtn = container.querySelector('#reset-2048');
const undoBtn = container.querySelector('#undo-2048');
// 游戏配置
const SIZE = 4;
let grid = [];
let score = 0;
let isDarkMode = false;
let history = [];
let isTouching = false;
let touchTarget = null; // 记录触摸目标，区分按钮和棋盘
// 颜色映射（保持不变）
const getColors = (value) => {
const colors = {
2: { bg: isDarkMode ? '#3a3a3a' : '#eee4da', text: isDarkMode ? '#fff' : '#776e65' },
4: { bg: isDarkMode ? '#4a4a4a' : '#ede0c8', text: isDarkMode ? '#fff' : '#776e65' },
8: { bg: isDarkMode ? '#ff9966' : '#f2b179', text: '#f9f6f2' },
16: { bg: isDarkMode ? '#ff7733' : '#f59563', text: '#f9f6f2' },
32: { bg: isDarkMode ? '#ff5500' : '#f67c5f', text: '#f9f6f2' },
64: { bg: isDarkMode ? '#ff3300' : '#f65e3b', text: '#f9f6f2' },
128: { bg: isDarkMode ? '#ffcc66' : '#edcf72', text: '#f9f6f2' },
256: { bg: isDarkMode ? '#ffbb33' : '#edcc61', text: '#f9f6f2' },
512: { bg: isDarkMode ? '#ffaa00' : '#edc850', text: '#f9f6f2' },
1024: { bg: isDarkMode ? '#ff9900' : '#edc53f', text: '#f9f6f2' },
2048: { bg: isDarkMode ? '#ff8800' : '#edc22e', text: '#f9f6f2' }
};
if (!colors[value]) {
colors[value] = { bg: isDarkMode ? '#ff5555' : '#3c3a32', text: '#f9f6f2' };
}
return colors[value];
};
// 初始化网格（保持不变）
const initGrid = () => {
grid = Array(SIZE).fill().map(() => Array(SIZE).fill(0));
score = 0;
history = [];
scoreEl.textContent = '0';
addRandomNumber();
addRandomNumber();
updateUndoBtn();
renderGrid();
};
// 保存历史记录（保持不变）
const saveHistory = () => {
const gridCopy = JSON.parse(JSON.stringify(grid));
history.push({ grid: gridCopy, score: score });
if (history.length > 10) history.shift();
updateUndoBtn();
};
// 撤回操作（保持不变）
const undoMove = () => {
if (history.length === 0) return;
const lastState = history.pop();
grid = lastState.grid;
score = lastState.score;
scoreEl.textContent = score;
updateUndoBtn();
renderGrid();
};
// 更新撤回按钮状态（保持不变）
const updateUndoBtn = () => {
undoBtn.disabled = history.length === 0;
undoBtn.style.opacity = history.length === 0 ? '0.5' : '1';
};
// 随机生成数字（保持不变）
const addRandomNumber = () => {
const emptyCells = [];
for (let i = 0; i < SIZE; i++) {
for (let j = 0; j < SIZE; j++) {
if (grid[i][j] === 0) emptyCells.push({ i, j });
}
}
if (emptyCells.length === 0) return false;
const { i, j } = emptyCells[Math.floor(Math.random() * emptyCells.length)];
grid[i][j] = Math.random() < 0.9 ? 2 : 4;
return true;
};
// 渲染网格（保持不变）
const renderGrid = () => {
boardEl.innerHTML = '';
for (let i = 0; i < SIZE; i++) {
for (let j = 0; j < SIZE; j++) {
const cell = document.createElement('div');
const value = grid[i][j];
cell.style.width = '80px';
cell.style.height = '80px';
cell.style.borderRadius = '4px';
cell.style.display = 'flex';
cell.style.alignItems = 'center';
cell.style.justifyContent = 'center';
cell.style.fontWeight = 'bold';
cell.style.transition = 'all 0.2s ease';
cell.style.fontFamily = 'Arial, sans-serif';
if (value === 0) {
cell.style.background = isDarkMode ? '#2a2a2a' : '#cdc1b4';
cell.style.color = 'transparent';
} else {
const { bg, text } = getColors(value);
cell.style.background = bg;
cell.style.color = text;
cell.style.fontSize = value < 100 ? '24px' : value < 1000 ? '20px' : '16px';
cell.textContent = value;
}
boardEl.appendChild(cell);
}
}
};
// 移动逻辑（保持不变）
const moveLeft = () => {
let moved = false;
for (let i = 0; i < SIZE; i++) {
for (let j = 1; j < SIZE; j++) {
if (grid[i][j] !== 0) {
let k = j;
while (k > 0 && grid[i][k - 1] === 0) {
grid[i][k - 1] = grid[i][k];
grid[i][k] = 0;
k--;
moved = true;
}
if (k > 0 && grid[i][k - 1] === grid[i][k]) {
grid[i][k - 1] *= 2;
score += grid[i][k - 1];
grid[i][k] = 0;
moved = true;
}
}
}
}
return moved;
};
const moveRight = () => {
let moved = false;
for (let i = 0; i < SIZE; i++) {
for (let j = SIZE - 2; j >= 0; j--) {
if (grid[i][j] !== 0) {
let k = j;
while (k < SIZE - 1 && grid[i][k + 1] === 0) {
grid[i][k + 1] = grid[i][k];
grid[i][k] = 0;
k++;
moved = true;
}
if (k < SIZE - 1 && grid[i][k + 1] === grid[i][k]) {
grid[i][k + 1] *= 2;
score += grid[i][k + 1];
grid[i][k] = 0;
moved = true;
}
}
}
}
return moved;
};
const moveUp = () => {
let moved = false;
for (let j = 0; j < SIZE; j++) {
for (let i = 1; i < SIZE; i++) {
if (grid[i][j] !== 0) {
let k = i;
while (k > 0 && grid[k - 1][j] === 0) {
grid[k - 1][j] = grid[k][j];
grid[k][j] = 0;
k--;
moved = true;
}
if (k > 0 && grid[k - 1][j] === grid[k][j]) {
grid[k - 1][j] *= 2;
score += grid[k - 1][j];
grid[k][j] = 0;
moved = true;
}
}
}
}
return moved;
};
const moveDown = () => {
let moved = false;
for (let j = 0; j < SIZE; j++) {
for (let i = SIZE - 2; i >= 0; i--) {
if (grid[i][j] !== 0) {
let k = i;
while (k < SIZE - 1 && grid[k + 1][j] === 0) {
grid[k + 1][j] = grid[k][j];
grid[k][j] = 0;
k++;
moved = true;
}
if (k < SIZE - 1 && grid[k + 1][j] === grid[k][j]) {
grid[k + 1][j] *= 2;
score += grid[k + 1][j];
grid[k][j] = 0;
moved = true;
}
}
}
}
return moved;
};
// 处理移动（保持不变）
const handleMove = (direction) => {
let moved;
switch (direction) {
case 'left': moved = moveLeft(); break;
case 'right': moved = moveRight(); break;
case 'up': moved = moveUp(); break;
case 'down': moved = moveDown(); break;
default: return;
}
if (moved) {
saveHistory();
scoreEl.textContent = score;
addRandomNumber();
renderGrid();
checkGameState();
}
};
// 检查游戏状态（保持不变）
const checkGameState = () => {
for (let i = 0; i < SIZE; i++) {
for (let j = 0; j < SIZE; j++) {
if (grid[i][j] === 2048) {
setTimeout(() => alert('恭喜你赢了！'), 300);
return;
}
}
}
for (let i = 0; i < SIZE; i++) {
for (let j = 0; j < SIZE; j++) {
if (grid[i][j] === 0) return;
}
}
for (let i = 0; i < SIZE; i++) {
for (let j = 0; j < SIZE - 1; j++) {
if (grid[i][j] === grid[i][j + 1]) return;
}
}
for (let j = 0; j < SIZE; j++) {
for (let i = 0; i < SIZE - 1; i++) {
if (grid[i][j] === grid[i + 1][j]) return;
}
}
setTimeout(() => alert('游戏结束！得分：' + score), 300);
};
// 明暗模式适配（保持不变）
const checkThemeMode = () => {
isDarkMode = document.documentElement.classList.contains('dark');
renderGrid();
};
const themeObserver = new MutationObserver(() => checkThemeMode());
themeObserver.observe(document.documentElement, { attributes: true });
// 键盘控制（保持不变）
const handleKeydown = (e) => {
switch (e.key) {
case 'ArrowLeft': handleMove('left'); e.preventDefault(); break;
case 'ArrowRight': handleMove('right'); e.preventDefault(); break;
case 'ArrowUp': handleMove('up'); e.preventDefault(); break;
case 'ArrowDown': handleMove('down'); e.preventDefault(); break;
default: return;
}
};
// 触屏控制（核心修复：区分按钮和棋盘触摸）
let touchStartX = 0, touchStartY = 0;
// 触摸开始：记录目标元素
const handleTouchStart = (e) => {
touchTarget = e.target; // 记录触摸的元素（按钮或棋盘）
// 只有触摸棋盘时才处理滑动逻辑
if (touchTarget === boardEl || boardEl.contains(touchTarget)) {
isTouching = true;
touchStartX = e.touches[0].clientX;
touchStartY = e.touches[0].clientY;
e.preventDefault();
}
// 触摸按钮时不阻止默认行为，确保点击有效
};
// 触摸移动：只在触摸棋盘时阻止滚动
const handleTouchMove = (e) => {
if (isTouching && (touchTarget === boardEl || boardEl.contains(touchTarget))) {
e.preventDefault(); // 仅棋盘滑动阻止滚动
}
};
// 触摸结束：区分处理
const handleTouchEnd = (e) => {
if (isTouching) {
isTouching = false;
const touchEndX = e.changedTouches[0].clientX;
const touchEndY = e.changedTouches[0].clientY;
const diffX = touchEndX - touchStartX;
const diffY = touchEndY - touchStartY;
if (Math.abs(diffX) > 30 || Math.abs(diffY) > 30) {
if (Math.abs(diffX) > Math.abs(diffY)) {
diffX > 0 ? handleMove('right') : handleMove('left');
} else {
diffY > 0 ? handleMove('down') : handleMove('up');
}
}
e.preventDefault();
}
touchTarget = null; // 重置触摸目标
};
// 为按钮添加专门的触摸事件（解决移动端点击无反应）
const handleButtonTouch = (callback) => {
return (e) => {
e.stopPropagation(); // 阻止事件冒泡到容器
callback();
};
};
// 事件绑定（优化版）
document.addEventListener('keydown', handleKeydown);
container.addEventListener('touchstart', handleTouchStart, { passive: false });
container.addEventListener('touchmove', handleTouchMove, { passive: false });
container.addEventListener('touchend', handleTouchEnd, { passive: false });
// 按钮单独绑定触摸和点击事件，确保移动端响应
resetBtn.addEventListener('click', initGrid);
resetBtn.addEventListener('touchstart', handleButtonTouch(initGrid), { passive: true });
undoBtn.addEventListener('click', undoMove);
undoBtn.addEventListener('touchstart', handleButtonTouch(undoMove), { passive: true });
// 初始化
checkThemeMode();
initGrid();
}
</script>
|
