bit/index.html at main · seheart/bit · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>BIT — TRON</title>
<link rel="icon" type="image/svg+xml" href="favicon.svg">
<style>
  * { margin: 0; padding: 0; box-sizing: border-box; }

  body {
    background: #000;
    color: #00ddff;
    font-family: 'Courier New', monospace;
    min-height: 100vh;
    overflow: hidden;
  }

  #canvas {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw !important;
    height: 100vh !important;
    z-index: 0;
  }

  /* ── Top bar: title + status ── */
  .top-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 28px;
    pointer-events: none;
  }

  h1 {
    font-size: 36px;
    letter-spacing: 12px;
    color: #00ddff;
    pointer-events: auto;
  }

  #status {
    font-size: 32px;
    font-weight: bold;
    letter-spacing: 10px;
    transition: color 0.15s, text-shadow 0.15s;
    pointer-events: none;
  }

  /* ── Bottom panel: input + controls ── */
  .bottom-panel {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 2;
    display: flex;
    justify-content: center;
    padding: 0 24px 28px;
    pointer-events: none;
  }

  .bottom-panel > * {
    pointer-events: auto;
  }

  /* Button row */
  .controls-row {
    display: flex;
    gap: 8px;
    align-items: center;
  }

  .ctrl-btn {
    background: transparent;
    border: 1px solid #1a3344;
    color: #447788;
    padding: 8px 16px;
    font-family: 'Courier New', monospace;
    font-size: 11px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: all 0.2s;
    text-decoration: none;
  }

  .ctrl-btn:hover {
    border-color: #00ddff;
    color: #00ddff;
    box-shadow: 0 0 8px rgba(0,221,255,0.2);
  }

  .ctrl-btn:active {
    background: rgba(0,221,255,0.15);
  }

  .ctrl-btn.accent {
    border-color: #332d00;
    color: #998800;
  }

  .ctrl-btn.accent:hover {
    border-color: #ffdd00;
    color: #ffdd00;
    box-shadow: 0 0 8px rgba(255,221,0,0.2);
  }

  .ctrl-sep {
    width: 1px;
    height: 16px;
    background: #1a2a33;
    margin: 0 4px;
  }

  /* DOM particles */
  .particle {
    position: fixed;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    pointer-events: none;
    z-index: 100;
    animation: particleFly 0.8s ease-out forwards;
  }

  @keyframes particleFly {
    0% { opacity: 1; transform: translate(0, 0) scale(1); }
    100% { opacity: 0; transform: translate(var(--dx), var(--dy)) scale(0); }
  }
</style>
</head>
<body>

<canvas id="canvas"></canvas>

<div class="top-bar">
  <h1>BIT</h1>
  <div id="status">&nbsp;</div>
</div>

<div class="bottom-panel">
  <div class="controls-row">
    <button class="ctrl-btn" id="btnAsk">Yes</button>
    <button class="ctrl-btn" id="btnChallenge">No</button>
    <button class="ctrl-btn" id="btnExcite">Excite</button>
    <div class="ctrl-sep"></div>
    <a href="math.html" class="ctrl-btn accent">Math</a>
  </div>
</div>

<!-- Audio -->
<audio id="audioYes" preload="auto" src="audio/bit-yes.mp3"></audio>
<audio id="audioNo" preload="auto" src="audio/bit-no.mp3"></audio>

<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r128/three.min.js"></script>
<script>
(function () {
  'use strict';

  // ── Constants ──────────────────────────────────────────────
  var PHI = (1 + Math.sqrt(5)) / 2;
  var STATE_NEUTRAL = 'neutral';
  var STATE_YES = 'yes';
  var STATE_NO = 'no';

  var COLORS = {
    neutral: { color: 0x00ddff, emissive: 0x003366 },
    yes:     { color: 0xffdd00, emissive: 0x554400 },
    no:      { color: 0xff3300, emissive: 0x551100 }
  };

  var ROTATION_SPEEDS = { neutral: 0.008, yes: 0.025, no: 0.015 };
  var RESPONSE_DURATION = 1500;
  var EXCITE_INTERVAL = 440;
  var EXCITE_COUNT = 5;

  // ── DOM refs ───────────────────────────────────────────────
  var canvas = document.getElementById('canvas');
  var statusEl = document.getElementById('status');
  var audioYes = document.getElementById('audioYes');
  var audioNo = document.getElementById('audioNo');

  // ── Audio (lazy AudioContext) ──────────────────────────────
  var audioCtx = null;

  function ensureAudioContext() {
    if (!audioCtx) {
      audioCtx = new (window.AudioContext || window.webkitAudioContext)();
    }
    if (audioCtx.state === 'suspended') {
      audioCtx.resume();
    }
  }

  function playSound(type, excited) {
    var el = (type === STATE_YES) ? audioYes : audioNo;
    var rate = excited ? 1.33 : 1.0;
    try {
      el.currentTime = 0;
      el.playbackRate = rate;
      var p = el.play();
      if (p && p.catch) p.catch(function () { fallbackOscillator(type, excited); });
    } catch (_) {
      fallbackOscillator(type, excited);
    }
  }

  function fallbackOscillator(type, excited) {
    ensureAudioContext();
    if (!audioCtx) return;
    var osc = audioCtx.createOscillator();
    var gain = audioCtx.createGain();
    osc.connect(gain);
    gain.connect(audioCtx.destination);
    osc.type = 'square';
    var baseFreq = (type === STATE_YES) ? 880 : 220;
    osc.frequency.value = excited ? baseFreq * 1.33 : baseFreq;
    gain.gain.setValueAtTime(0.15, audioCtx.currentTime);
    gain.gain.exponentialRampToValueAtTime(0.001, audioCtx.currentTime + 0.3);
    osc.start();
    osc.stop(audioCtx.currentTime + 0.35);
  }

  // ── Three.js setup ─────────────────────────────────────────
  var renderer = new THREE.WebGLRenderer({ canvas: canvas, antialias: true, alpha: false });
  renderer.setPixelRatio(Math.min(window.devicePixelRatio, 2));
  renderer.setSize(window.innerWidth, window.innerHeight);

  var scene = new THREE.Scene();
  scene.background = new THREE.Color(0x000000);

  var camera = new THREE.PerspectiveCamera(50, window.innerWidth / window.innerHeight, 0.1, 100);
  camera.position.set(0, 0, 7);

  window.addEventListener('resize', function () {
    camera.aspect = window.innerWidth / window.innerHeight;
    camera.updateProjectionMatrix();
    renderer.setSize(window.innerWidth, window.innerHeight);
  });

  // Lighting
  scene.add(new THREE.AmbientLight(0x404040, 0.4));

  var mainLight = new THREE.DirectionalLight(0xffffff, 1.0);
  mainLight.position.set(2, 3, 2);
  scene.add(mainLight);

  var fillLight = new THREE.DirectionalLight(0x4488cc, 0.3);
  fillLight.position.set(-2, -1, -2);
  scene.add(fillLight);

  var rimLight = new THREE.PointLight(0x00ddff, 0.5, 20);
  rimLight.position.set(0, 2, 4);
  scene.add(rimLight);

  // ── Geometry helpers ───────────────────────────────────────

  function pushTri(arr, a, b, c) {
    arr.push(a.x, a.y, a.z, b.x, b.y, b.z, c.x, c.y, c.z);
  }

  function buildBufferGeo(positions) {
    var geo = new THREE.BufferGeometry();
    geo.setAttribute('position', new THREE.BufferAttribute(new Float32Array(positions), 3));
    geo.computeVertexNormals();
    return geo;
  }

  // ── Stellated icosahedron (Neutral) ────────────────────────

  function createStellatedIcosahedron(spikeHeight) {
    var base = new THREE.IcosahedronGeometry(1, 0);
    var posAttr = base.getAttribute('position');
    var indexAttr = base.getIndex();

    // Extract unique vertices
    var verts = [];
    var seen = {};
    var indexMap = [];
    for (var i = 0; i < posAttr.count; i++) {
      var x = posAttr.getX(i), y = posAttr.getY(i), z = posAttr.getZ(i);
      var key = x.toFixed(5) + ',' + y.toFixed(5) + ',' + z.toFixed(5);
      if (seen[key] === undefined) {
        seen[key] = verts.length;
        verts.push(new THREE.Vector3(x, y, z));
      }
      indexMap.push(seen[key]);
    }

    // Build face list
    var faces = [];
    if (indexAttr) {
      for (var i = 0; i < indexAttr.count; i += 3) {
        faces.push([
          indexMap[indexAttr.getX(i)],
          indexMap[indexAttr.getX(i + 1)],
          indexMap[indexAttr.getX(i + 2)]
        ]);
      }
    } else {
      for (var i = 0; i < posAttr.count; i += 3) {
        faces.push([indexMap[i], indexMap[i + 1], indexMap[i + 2]]);
      }
    }

    var positions = [];
    var v1 = new THREE.Vector3(), v2 = new THREE.Vector3(), v3 = new THREE.Vector3();
    var center = new THREE.Vector3(), normal = new THREE.Vector3();
    var edge1 = new THREE.Vector3(), edge2 = new THREE.Vector3();

    for (var i = 0; i < faces.length; i++) {
      v1.copy(verts[faces[i][0]]);
      v2.copy(verts[faces[i][1]]);
      v3.copy(verts[faces[i][2]]);

      center.set(0, 0, 0).add(v1).add(v2).add(v3).divideScalar(3);
      edge1.subVectors(v2, v1);
      edge2.subVectors(v3, v1);
      normal.crossVectors(edge1, edge2).normalize();

      // Ensure outward-pointing
      if (normal.dot(center) < 0) normal.negate();

      var apex = center.clone().addScaledVector(normal, spikeHeight);

      pushTri(positions, v1, v2, apex);
      pushTri(positions, v2, v3, apex);
      pushTri(positions, v3, v1, apex);
    }

    base.dispose();
    return buildBufferGeo(positions);
  }

  // ── Stellated dodecahedron (NO) ────────────────────────────

  // Seeded random for deterministic spike variation per face
  function seededRandom(seed) {
    var x = Math.sin(seed * 127.1 + seed * 311.7) * 43758.5453;
    return x - Math.floor(x);
  }

  function createStellatedDodecahedron(baseSpikeHeight) {
    var base = new THREE.DodecahedronGeometry(1, 0);
    var posAttr = base.getAttribute('position');
    var indexAttr = base.getIndex();

    // Collect all triangles from Three.js triangulation
    var triangles = [];
    if (indexAttr) {
      for (var i = 0; i < indexAttr.count; i += 3) {
        var a = indexAttr.getX(i), b = indexAttr.getX(i + 1), c = indexAttr.getX(i + 2);
        triangles.push([
          new THREE.Vector3(posAttr.getX(a), posAttr.getY(a), posAttr.getZ(a)),
          new THREE.Vector3(posAttr.getX(b), posAttr.getY(b), posAttr.getZ(b)),
          new THREE.Vector3(posAttr.getX(c), posAttr.getY(c), posAttr.getZ(c))
        ]);
      }
    } else {
      for (var i = 0; i < posAttr.count; i += 3) {
        triangles.push([
          new THREE.Vector3(posAttr.getX(i), posAttr.getY(i), posAttr.getZ(i)),
          new THREE.Vector3(posAttr.getX(i + 1), posAttr.getY(i + 1), posAttr.getZ(i + 1)),
          new THREE.Vector3(posAttr.getX(i + 2), posAttr.getY(i + 2), posAttr.getZ(i + 2))
        ]);
      }
    }

    // Group triangles by pentagonal face (same face normal + proximity)
    var assigned = [];
    for (var i = 0; i < triangles.length; i++) assigned.push(false);
    var faceGroups = [];

    for (var i = 0; i < triangles.length; i++) {
      if (assigned[i]) continue;
      var tri = triangles[i];
      var n = computeTriNormal(tri[0], tri[1], tri[2]);
      var c = computeTriCenter(tri[0], tri[1], tri[2]);
      var group = [i];
      assigned[i] = true;

      for (var j = i + 1; j < triangles.length; j++) {
        if (assigned[j]) continue;
        var n2 = computeTriNormal(triangles[j][0], triangles[j][1], triangles[j][2]);
        if (Math.abs(n.dot(n2) - 1) < 0.05) {
          var c2 = computeTriCenter(triangles[j][0], triangles[j][1], triangles[j][2]);
          if (c.distanceTo(c2) < 1.2) {
            group.push(j);
            assigned[j] = true;
          }
        }
      }
      faceGroups.push(group);
    }

    // Stellate each pentagonal face group with varying spike heights
    var positions = [];

    for (var g = 0; g < faceGroups.length; g++) {
      var groupIndices = faceGroups[g];

      // Compute pentagon center
      var faceCenter = new THREE.Vector3();
      var vertCount = 0;
      for (var t = 0; t < groupIndices.length; t++) {
        var tri = triangles[groupIndices[t]];
        faceCenter.add(tri[0]).add(tri[1]).add(tri[2]);
        vertCount += 3;
      }
      faceCenter.divideScalar(vertCount);

      // Face normal from first triangle, pointing outward
      var firstTri = triangles[groupIndices[0]];
      var faceNormal = computeTriNormal(firstTri[0], firstTri[1], firstTri[2]);
      if (faceNormal.dot(faceCenter) < 0) faceNormal.negate();

      // Vary spike height per face: some short, some very long
      // Range from 0.8x to 1.8x of base height for aggressive variation
      var variation = seededRandom(g * 7 + 3);
      var spikeHeight = baseSpikeHeight * (0.8 + variation * 1.0);

      var apex = faceCenter.clone().addScaledVector(faceNormal, spikeHeight);

      // Build spike triangles — narrow, sharp spikes
      for (var t = 0; t < groupIndices.length; t++) {
        var tri = triangles[groupIndices[t]];
        pushTri(positions, tri[0], tri[1], apex);
        pushTri(positions, tri[1], tri[2], apex);
        pushTri(positions, tri[2], tri[0], apex);
      }
    }

    base.dispose();
    return buildBufferGeo(positions);
  }

  function computeTriNormal(a, b, c) {
    var e1 = new THREE.Vector3().subVectors(b, a);
    var e2 = new THREE.Vector3().subVectors(c, a);
    return new THREE.Vector3().crossVectors(e1, e2).normalize();
  }

  function computeTriCenter(a, b, c) {
    return new THREE.Vector3().add(a).add(b).add(c).divideScalar(3);
  }

  // ── State management ───────────────────────────────────────
  var currentState = STATE_NEUTRAL;
  var currentMesh = null;
  var responseTimer = null;
  var isExcited = false;

  function createMaterial(state) {
    var c = COLORS[state];
    return new THREE.MeshPhongMaterial({
      color: c.color,
      emissive: c.emissive,
      flatShading: true,
      transparent: true,
      opacity: 0.92,
      shininess: 80,
      side: THREE.DoubleSide
    });
  }

  function createGeometry(state) {
    switch (state) {
      case STATE_YES: return new THREE.OctahedronGeometry(1.2, 0);
      case STATE_NO:  return createStellatedDodecahedron(1.8);
      default:        return createStellatedIcosahedron(0.3);
    }
  }

  function setMesh(state) {
    if (currentMesh) {
      currentMesh.geometry.dispose();
      currentMesh.material.dispose();
      scene.remove(currentMesh);
    }
    var geo = createGeometry(state);
    var mat = createMaterial(state);
    currentMesh = new THREE.Mesh(geo, mat);
    scene.add(currentMesh);
    currentState = state;
  }

  function updateStatus(state) {
    if (state === STATE_YES) {
      statusEl.textContent = 'YES!';
      statusEl.style.color = '#ffdd00';
    } else if (state === STATE_NO) {
      statusEl.textContent = 'NO!';
      statusEl.style.color = '#ff3300';
    } else {
      statusEl.innerHTML = '&nbsp;';
      statusEl.style.color = '#00ddff';
    }
  }

  // ── Particles ──────────────────────────────────────────────

  function spawnParticles(state) {
    var rect = canvas.getBoundingClientRect();
    var cx = rect.left + rect.width / 2;
    var cy = rect.top + rect.height / 2;
    var color = (state === STATE_YES) ? '#ffdd00' : '#ff3300';

    for (var i = 0; i < 16; i++) {
      var el = document.createElement('div');
      el.className = 'particle';
      var angle = (Math.PI * 2 * i) / 16 + (Math.random() - 0.5) * 0.4;
      var dist = 60 + Math.random() * 80;
      el.style.left = cx + 'px';
      el.style.top = cy + 'px';
      el.style.background = color;
      el.style.boxShadow = '0 0 6px ' + color;
      el.style.setProperty('--dx', (Math.cos(angle) * dist) + 'px');
      el.style.setProperty('--dy', (Math.sin(angle) * dist) + 'px');
      document.body.appendChild(el);
      el.addEventListener('animationend', function () { this.remove(); });
    }
  }

  // ── Response logic ─────────────────────────────────────────

  function respond(type, excited) {
    if (responseTimer) {
      clearTimeout(responseTimer);
      responseTimer = null;
    }

    ensureAudioContext();
    var state = (type === 'random')
      ? (Math.random() < 0.5 ? STATE_YES : STATE_NO)
      : type;

    setMesh(state);
    updateStatus(state);
    playSound(state, excited);
    spawnParticles(state);

    responseTimer = setTimeout(function () {
      setMesh(STATE_NEUTRAL);
      updateStatus(STATE_NEUTRAL);
      responseTimer = null;
    }, RESPONSE_DURATION);
  }

  function excite() {
    if (isExcited) return;
    isExcited = true;
    var count = 0;

    function next() {
      count++;
      respond('random', true);
      if (count < EXCITE_COUNT) {
        setTimeout(next, EXCITE_INTERVAL);
      } else {
        isExcited = false;
      }
    }
    next();
  }

  // ── Controls ───────────────────────────────────────────────

  canvas.addEventListener('click', function () { respond('random', false); });

  document.addEventListener('keydown', function (e) {
    if (e.repeat) return;
    switch (e.key.toLowerCase()) {
      case 'y': respond(STATE_YES, false); break;
      case 'n': respond(STATE_NO, false); break;
      case ' ':
        e.preventDefault();
        respond('random', false);
        break;
      case 'e': excite(); break;
    }
  });

  document.getElementById('btnAsk').addEventListener('click', function () {
    respond(STATE_YES, false);
  });
  document.getElementById('btnChallenge').addEventListener('click', function () {
    respond(STATE_NO, false);
  });
  document.getElementById('btnExcite').addEventListener('click', function () {
    excite();
  });

  // ── Animation loop ─────────────────────────────────────────

  var clock = new THREE.Clock();
  setMesh(STATE_NEUTRAL);

  function animate() {
    requestAnimationFrame(animate);
    var t = clock.getElapsedTime();
    var speed = ROTATION_SPEEDS[currentState] || ROTATION_SPEEDS.neutral;

    if (currentMesh) {
      currentMesh.rotation.y += speed;
      currentMesh.rotation.x += speed * 0.4;
      currentMesh.position.y = Math.sin(t * 1.5) * 0.15;
    }

    renderer.render(scene, camera);
  }

  animate();

})();
</script>
</body>
</html>