Huchangzhi.github.io/box.html at main · Huchangzhi/Huchangzhi.github.io · GitHub

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<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="UTF-8" />
  <title>WebAssembly Wasm Module Runner</title>
  <style>
    body {
      font-family: sans-serif;
      text-align: center;
      background: #000;
      color: #fff;
    }
    #canvas {
      display: none;
      margin: 20px auto;
      background-color: black;
    }
    #loading {
      display: block;
      margin: 40px auto;
    }
  </style>
</head>
<body>
  <!-- 加载动画 -->
  <img id="loading" src="loading.gif" alt="Loading..." />

  <!-- Canvas 元素用于渲染 Wasm 内容 -->
  <canvas id="canvas" width="800" height="600"></canvas>

  <!-- 状态提示 -->
  <p id="status" style="display: none;">Loading...</p>

  <script>
    // 设置 WebAssembly 模块名称
    const moduleBaseName = 'powderdev';

    // 动态加载 .js 胶水文件
    function loadWasmScript() {
      return new Promise((resolve, reject) => {
        const script = document.createElement('script');
        script.src = `./${moduleBaseName}.js`; // 注意路径（可改为 ./wasm/powderdev.js）
        script.onload = () => {
          if (typeof window[`create_${moduleBaseName}`] === 'function') {
            resolve(window[`create_${moduleBaseName}`]);
          } else {
            reject(new Error(`Failed to find 'create_${moduleBaseName}' in loaded script`));
          }
        };
        script.onerror = () => {
          reject(new Error('Failed to load Wasm script.'));
        };
        document.head.appendChild(script);
      });
    }

    // 获取 DOM 元素
    const canvas = document.getElementById('canvas');
    const status = document.getElementById('status');
    const loading = document.getElementById('loading');

    // 标记内容可以显示
    window.mark_presentable = function () {
      loading.style.display = 'none';
      canvas.style.display = 'block';
    };

    // 错误处理
    window.onerror = (event) => {
      status.innerText = '出现异常，请查看控制台输出。';
      status.style.display = 'block';
      return true; // 抑制浏览器默认错误提示
    };

    // 初始化 WebAssembly 模块
    loadWasmScript().then(createModule => {
      createModule({
        canvas,
        print: console.log,
        printErr: console.error
      });
    }).catch(err => {
      console.error(err);
      status.innerText = '加载失败，请检查网络请求和路径。';
      status.style.display = 'block';
    });

    // 监听 WebGL 上下文丢失
    canvas.addEventListener("webglcontextlost", (e) => {
      alert('WebGL 上下文丢失，请刷新页面。');
      e.preventDefault();
    }, false);
  </script>
</body>
</html>