aeon/iso_demo.html at main · lordbasilaiassistant-sudo/aeon · 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, maximum-scale=1.0, user-scalable=no" />
<title>AEON — 2.5D look (oblique height-extruded terrain)</title>
<style>
  :root { color-scheme: dark; }
  html, body { margin: 0; height: 100%; overflow: hidden; background: #07090f;
    font-family: ui-sans-serif, system-ui, -apple-system, sans-serif; color: #e6ebf2; }
  #stage { position: fixed; inset: 0; }
  canvas { display: block; width: 100%; height: 100%; cursor: grab; }
  canvas.drag { cursor: grabbing; }

  #boot { position: fixed; inset: 0; display: flex; align-items: center; justify-content: center;
    background: radial-gradient(circle at 50% 40%, #16263a, #07090f 70%); z-index: 20; transition: opacity .5s; }
  #boot .inner { text-align: center; }
  #boot h1 { font-size: 40px; letter-spacing: .22em; margin: 0 0 6px; font-weight: 700; }
  #boot p { margin: 0; opacity: .7; font-size: 13px; letter-spacing: .04em; }
  #boot.gone { opacity: 0; pointer-events: none; }

  #hud { position: fixed; top: 12px; left: 12px; z-index: 10; display: flex; flex-direction: column; gap: 8px;
    pointer-events: none; }
  .panel { background: rgba(12,18,28,0.72); border: 1px solid rgba(120,150,190,0.18);
    border-radius: 10px; padding: 10px 12px; backdrop-filter: blur(6px); pointer-events: auto;
    box-shadow: 0 6px 20px rgba(0,0,0,0.4); }
  .title { font-size: 12px; letter-spacing: .14em; text-transform: uppercase; opacity: .6; margin-bottom: 8px; }
  .row { display: flex; align-items: center; gap: 8px; font-size: 12px; margin: 6px 0; }
  .row label { width: 56px; opacity: .8; }
  .row input[type=range] { flex: 1; accent-color: #6fae5a; }
  .stats { font-size: 12px; line-height: 1.7; }
  .stats b { color: #9fd089; font-variant-numeric: tabular-nums; }
  .hint { position: fixed; bottom: 12px; left: 12px; z-index: 10; font-size: 11.5px; opacity: .55;
    background: rgba(12,18,28,0.6); padding: 7px 11px; border-radius: 8px; max-width: 360px; line-height: 1.6; }
  .btnrow { display: flex; gap: 6px; margin-top: 8px; }
  .btnrow button { flex: 1; background: rgba(40,60,90,0.5); color: #dfe7f0; border: 1px solid rgba(120,150,190,0.25);
    border-radius: 7px; padding: 6px 4px; font-size: 11px; cursor: pointer; }
  .btnrow button:hover { background: rgba(60,90,130,0.6); }
  .err { position: fixed; bottom: 0; left: 0; right: 0; background: #3a0d0d; color: #ffd0d0; font-size: 12px;
    padding: 10px 14px; z-index: 30; white-space: pre-wrap; font-family: ui-monospace, monospace; display: none; }
</style>
</head>
<body>
<div id="stage"><canvas id="view"></canvas></div>

<div id="boot"><div class="inner">
  <h1>AEON</h1>
  <p id="bootmsg">seeding a living world…</p>
</div></div>

<div id="hud">
  <div class="panel">
    <div class="title">2.5D — oblique relief</div>
    <div class="row"><label>Tilt</label><input id="tilt" type="range" min="0" max="1" step="0.01" value="1" /></div>
    <div class="row"><label>Zoom</label><input id="zoom" type="range" min="2" max="40" step="0.1" value="7" /></div>
    <div class="btnrow">
      <button id="pause">⏸ Pause</button>
      <button id="reset">⟳ Reset view</button>
    </div>
  </div>
  <div class="panel stats">
    <div>Year <b id="s-year">0</b> · Pop <b id="s-pop">0</b></div>
    <div>Nations <b id="s-nat">0</b> · Cities <b id="s-cit">0</b></div>
    <div>Frame <b id="s-ms">0</b> ms · <b id="s-fps">0</b> fps</div>
  </div>
</div>

<div class="hint">
  Drag to pan · scroll to zoom · <b>Tilt</b> flattens (top-down) or exaggerates the 3D relief.
  Higher ground rises on screen with lit slopes &amp; cliff faces; the sim keeps stepping so it stays alive.
</div>

<div id="err" class="err"></div>

<script type="module">
import { Sim } from './src/sim/sim.js';
import { IsoRenderer } from './src/render/iso25.js';

const errBox = document.getElementById('err');
function fail(e) {
  errBox.style.display = 'block';
  errBox.textContent = 'ERROR: ' + (e && e.stack ? e.stack : e);
  console.error(e);
}
window.addEventListener('error', (ev) => fail(ev.error || ev.message));
window.addEventListener('unhandledrejection', (ev) => fail(ev.reason));

try {
  const canvas = document.getElementById('view');
  const boot = document.getElementById('boot');
  const bootmsg = document.getElementById('bootmsg');

  // 1) build a real Sim and step it so the world is populated (the brief's recipe)
  bootmsg.textContent = 'seeding a living world…';
  const sim = new Sim({ w: 200, h: 130, seed: 7, cap: 2200 });
  for (let i = 0; i < 150; i++) sim.step();   // ~150 ticks => tribes, cities, agents

  // 2) the 2.5D renderer over that real sim
  const renderer = new IsoRenderer(canvas, sim);

  // center the camera on the busiest tribe so there's something to see immediately
  let cx = sim.world.w / 2, cy = sim.world.h / 2, best = -1;
  for (const tr of sim.tribes.values()) {
    if (tr.members > best) { best = tr.members; cx = tr.capitalX; cy = tr.capitalY; }
  }
  renderer.cam.x = renderer.cam.tx = cx;
  renderer.cam.y = renderer.cam.ty = cy;
  renderer.cam.zoom = renderer.cam.tzoom = 7;

  function fit() {
    const w = window.innerWidth, h = window.innerHeight;
    renderer.resize(w, h);
  }
  window.addEventListener('resize', fit);
  fit();

  // ---- input: pan / zoom / tilt -------------------------------------------
  let dragging = false, lastX = 0, lastY = 0;
  canvas.addEventListener('pointerdown', (e) => {
    dragging = true; lastX = e.clientX; lastY = e.clientY; canvas.classList.add('drag');
    canvas.setPointerCapture(e.pointerId);
  });
  canvas.addEventListener('pointermove', (e) => {
    if (!dragging) return;
    renderer.cam.panBy(e.clientX - lastX, e.clientY - lastY);
    lastX = e.clientX; lastY = e.clientY;
  });
  const endDrag = (e) => { dragging = false; canvas.classList.remove('drag'); };
  canvas.addEventListener('pointerup', endDrag);
  canvas.addEventListener('pointercancel', endDrag);
  canvas.addEventListener('wheel', (e) => {
    e.preventDefault();
    const rect = canvas.getBoundingClientRect();
    const factor = e.deltaY < 0 ? 1.12 : 1 / 1.12;
    renderer.cam.zoomAt(e.clientX - rect.left, e.clientY - rect.top, factor);
    zoomSlider.value = renderer.cam.tzoom;
  }, { passive: false });

  const tiltSlider = document.getElementById('tilt');
  const zoomSlider = document.getElementById('zoom');
  tiltSlider.addEventListener('input', () => renderer.cam.setTilt(parseFloat(tiltSlider.value)));
  zoomSlider.addEventListener('input', () => { renderer.cam.tzoom = parseFloat(zoomSlider.value); });

  let paused = false;
  const pauseBtn = document.getElementById('pause');
  pauseBtn.addEventListener('click', () => { paused = !paused; pauseBtn.textContent = paused ? '▶ Play' : '⏸ Pause'; });
  document.getElementById('reset').addEventListener('click', () => {
    renderer.cam.tx = cx; renderer.cam.ty = cy; renderer.cam.tzoom = 7; renderer.cam.ttilt = 1;
    tiltSlider.value = 1; zoomSlider.value = 7;
  });

  // ---- stats ----
  const $ = (id) => document.getElementById(id);
  let frames = 0, msAcc = 0, statT = 0;
  function writeStats() {
    if (frames > 0) {
      $('s-ms').textContent = (msAcc / frames).toFixed(1);
      const f = Math.round(1000 / (msAcc / frames));
      $('s-fps').textContent = isFinite(f) ? f : '—';
    }
    $('s-year').textContent = sim.year();
    $('s-pop').textContent = sim.population();
    $('s-nat').textContent = sim.activeTribes();
    $('s-cit').textContent = (sim.settlements || []).length;
  }
  writeStats();   // prime immediately so the panel never reads a misleading 0

  // ---- main loop: keep stepping the sim a little + render every frame -------
  boot.classList.add('gone');
  setTimeout(() => boot.remove(), 600);

  function frame(now) {
    const t0 = performance.now();
    if (!paused) {
      // step the sim a couple ticks per frame so the world feels alive but the
      // renderer (the thing we're showing off) stays the star.
      sim.step();
      if ((sim.tick & 1) === 0) sim.step();
    }
    renderer.render();
    const dt = performance.now() - t0;

    frames++; msAcc += dt; statT += 16;
    if (statT >= 480) {
      writeStats();
      frames = 0; msAcc = 0; statT = 0;
    }
    requestAnimationFrame(frame);
  }
  requestAnimationFrame(frame);
} catch (e) {
  fail(e);
}
</script>
</body>
</html>