ling-lang 2030.1.2

Ling - The Omniglot Systems Language
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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>complex_hello</title>
  <style>
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html, body { width: 100%; height: 100%; background: #000; overflow: hidden; }
    #canvas {
      display: block;
      position: absolute;
      top: 50%; left: 50%;
      transform: translate(-50%, -50%);
      max-width: 100vw;
      max-height: 100vh;
      width: auto;
      height: auto;
    }
    #status {
      position: fixed; bottom: 8px; right: 12px;
      color: #888; font: 12px/1 monospace;
    }
  </style>
</head>
<body>
  <canvas id="canvas"></canvas>
  <div id="status">loading…</div>

  <script>
    const canvas = document.getElementById('canvas');
    const status = document.getElementById('status');

    canvas.width  = window.innerWidth;
    canvas.height = window.innerHeight;

    const worker = new Worker('worker.js');

    const offscreen = canvas.transferControlToOffscreen();
    worker.postMessage({ type: 'init', canvas: offscreen }, [offscreen]);

    fetch('program.ling')
      .then(r => { if (!r.ok) throw new Error(r.statusText); return r.text(); })
      .then(source => {
        status.textContent = 'running';
        worker.postMessage({ type: 'run', source });
      })
      .catch(err => {
        status.textContent = 'error: ' + err.message;
        console.error(err);
      });

    worker.onerror = (e) => {
      status.textContent = 'worker error: ' + e.message;
      console.error('worker error', e);
    };
  </script>
</body>
</html>