js 俄罗斯方块 60行

// 定义游戏区域的大小
const ROWS = 20;
const COLS = 10;

// 创建游戏区域的二维数组
let board = Array.from({ length: ROWS }, () => Array(COLS).fill(0));

// 定义方块的形状
const SHAPES = [
  [[1, 1, 1, 1]],
  [[1, 1], [1, 1]],
  [[1, 1, 0], [0, 1, 1]],
  [[0, 1, 1], [1, 1, 0]],
  [[1, 1, 1], [0, 1, 0]],
  [[1, 1, 1], [1, 0, 0]],
  [[1, 1, 1], [0, 0, 1]]
];

// 当前方块
let currentShape = SHAPES[Math.floor(Math.random() * SHAPES.length)];
let currentX = Math.floor(COLS / 2) - Math.floor(currentShape[0].length / 2);
let currentY = 0;

// 检查方块是否可以移动
function canMove(shape, x, y) {
  for (let i = 0; i < shape.length; i++) {
    for (let j = 0; j < shape[i].length; j++) {
      if (shape[i][j] && (y + i >= ROWS || x + j < 0 || x + j >= COLS || board[y + i][x + j])) {
        return false;
      }
    }
  }
  return true;
}

// 移动方块下落
function moveDown() {
  if (canMove(currentShape, currentX, currentY + 1)) {
    currentY++;
  } else {
    // 方块固定
    for (let i = 0; i < currentShape.length; i++) {
      for (let j = 0; j < currentShape[i].length; j++) {
        if (currentShape[i][j]) {
          board[currentY + i][currentX + j] = 1;
        }
      }
    }
    // 生成新方块
    currentShape = SHAPES[Math.floor(Math.random() * SHAPES.length)];
    currentX = Math.floor(COLS / 2) - Math.floor(currentShape[0].length / 2);
    currentY = 0;
    if (!canMove(currentShape, currentX, currentY)) {
      alert('游戏结束');
      document.body.innerHTML = '';
    }
  }
}

// 渲染游戏区域
function render() {
  let html = '';
  for (let i = 0; i < ROWS; i++) {
    for (let j = 0; j < COLS; j++) {
      html += board[i][j] ? '█' : ' ';
    }
    html += '
';
  }
  document.body.innerHTML = html;
}

// 初始化游戏
render();
setInterval(moveDown, 1000);