Proof-of-concept demo

<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>REDnode overlay demo</title>
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Chakra+Petch:wght@500;600;700&family=Rajdhani:wght@400;500;600&family=JetBrains+Mono:wght@400;500&display=swap" rel="stylesheet">
<link rel="stylesheet" href="style.css">
</head>
<body>
<main class="panel">
  <header data-rednode-drag title="Drag to move">
    <div class="brand"><span class="dot"></span><b>REDNODE</b> // OVERLAY <span class="dim">PROOF OF CONCEPT</span></div>
    <div class="status">
      <span id="link" class="pill off">NO GAME</span>
      <span id="mode" class="pill">PASSIVE</span>
    </div>
  </header>

  <section class="grid">
    <article>
      <h2><span>01</span> Compositor + live HTML</h2>
      <p class="big mono" id="clock">--:--:--.---</p>
      <div class="bar"><i id="sweep"></i></div>
      <p class="dim">Page frames: <b id="raf">0</b>. If the clock ticks and the bar moves in game, steps 1 and 2 work.</p>
    </article>

    <article>
      <h2><span>02</span> Input</h2>
      <div class="row">
        <button id="click">Click me</button>
        <span class="mono">Clicks: <b id="clicks">0</b></span>
      </div>
      <input id="text" type="text" placeholder="Type here" autocomplete="off" spellcheck="false">
      <p class="dim">Last key: <b id="key" class="mono">none</b>. The camera should not move while you do this.</p>
    </article>

    <article>
      <h2><span>03</span> Bridge to the game</h2>
      <div class="row">
        <button id="pos">Read player position</button>
        <button id="info" class="ghost">Game frame</button>
      </div>
      <p class="mono result" id="result">No call yet.</p>
      <p class="dim">Runs <code>GetPlayer</code> and <code>GetWorldPosition</code> on the game thread. Walk, then read again.</p>
    </article>

    <article>
      <h2><span>04</span> Events from the game</h2>
      <ol id="events" class="mono"><li class="dim">Waiting. Load a save to see OnGameAttached.</li></ol>
    </article>
  </section>

  <footer class="mono">
    <span><b>F10</b> passive / interactive / hidden</span>
    <span><b>DRAG</b> the title bar to move</span>
    <span><b>CLICK</b> empty space or <b>ESC</b> to return to the game</span>
    <span id="windowed" hidden>WINDOW MODE: NOT CONNECTED TO THE GAME BY DESIGN</span>
  </footer>
</main>
<script src="app.js"></script>
</body>
</html>

/* REDnode HUD tokens, same as docs/assets/css/hud.css */
:root {
  --bg: rgba(8, 9, 13, .88);
  --panel: rgba(16, 19, 27, .92);
  --line: #262c3d;
  --fg: #e3e6ee;
  --dim: #8a93a8;
  --yellow: #fcee0a;
  --cyan: #19f3ff;
  --red: #ff2a52;
  --green: #5dffa1;
  --display: "Chakra Petch", "Arial Narrow", sans-serif;
  --body: "Rajdhani", "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", "Consolas", monospace;
  --cut: 18px;
}
* { box-sizing: border-box; }
html, body { margin: 0; width: 1024px; height: 640px; overflow: hidden; background: transparent; }
body { color: var(--fg); font: 17px/1.4 var(--body); user-select: none; }

.panel {
  position: absolute; inset: 8px;
  display: grid; grid-template-rows: auto 1fr auto; gap: 14px; padding: 18px 22px;
  background:
    linear-gradient(rgba(25,243,255,.04) 1px, transparent 1px) 0 0 / 32px 32px,
    linear-gradient(90deg, rgba(25,243,255,.04) 1px, transparent 1px) 0 0 / 32px 32px,
    var(--bg);
  border: 1px solid rgba(252,238,10,.55);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

header {
  display: flex; justify-content: space-between; align-items: center; font: 12px var(--mono); letter-spacing: .14em; color: var(--dim);
  margin: -18px -22px 0; padding: 14px 22px 10px; border-bottom: 1px solid var(--line); cursor: move;
}
.panel.unfocused { border-color: rgba(252,238,10,.2); }
.panel.unfocused header .brand b { color: var(--dim); }
.brand b { color: var(--yellow); font-weight: 500; }
.dot { display: inline-block; width: 8px; height: 8px; margin-right: 8px; background: var(--green); }
.status { display: flex; gap: 8px; }
.pill { padding: 3px 9px; border: 1px solid var(--line); color: var(--cyan); }
.pill.off { color: var(--red); border-color: rgba(255,42,82,.5); }
.pill.on { color: var(--green); border-color: rgba(93,255,161,.5); }
.pill.hot { color: #08090d; background: var(--yellow); border-color: var(--yellow); }

.grid { display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr; gap: 14px; min-height: 0; }
article { min-height: 0; overflow: hidden; padding: 14px 16px; background: var(--panel); border: 1px solid var(--line); border-left: 3px solid var(--cyan); }
h2 { margin: 0 0 10px; font: 600 16px var(--display); letter-spacing: .08em; text-transform: uppercase; }
h2 span { color: var(--yellow); font: 12px var(--mono); margin-right: 8px; }
p { margin: 8px 0 0; }
.dim { color: var(--dim); font-size: 15px; }
.dim b { color: var(--fg); }
.mono { font-family: var(--mono); }
.big { margin: 0; font-size: 34px; color: var(--yellow); letter-spacing: .02em; }
code { font: 13px var(--mono); color: var(--yellow); }

.bar { position: relative; height: 6px; margin-top: 10px; background: #0b0d13; border: 1px solid var(--line); overflow: hidden; }
.bar i { position: absolute; top: 0; bottom: 0; width: 22%; background: linear-gradient(90deg, transparent, var(--cyan)); }

.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
button {
  font: 600 14px var(--display); letter-spacing: .1em; text-transform: uppercase;
  padding: 8px 14px; color: #08090d; background: var(--yellow); border: 0; cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
}
button:hover { background: #fff36b; }
button:active { transform: translateY(1px); }
button.ghost { color: var(--cyan); background: transparent; outline: 1px solid rgba(25,243,255,.5); }
input {
  width: 100%; margin-top: 12px; padding: 8px 10px; font: 14px var(--mono); color: var(--fg);
  background: #0b0d13; border: 1px solid var(--line); border-left: 3px solid var(--yellow); outline: none;
}
input:focus { border-color: var(--cyan); }
.result { margin-top: 12px; padding: 8px 10px; min-height: 38px; font-size: 14px; background: #0b0d13; border: 1px solid var(--line); }
.result.ok { color: var(--green); }
.result.err { color: var(--red); }

#events { margin: 0; padding: 0; list-style: none; font-size: 13px; }
#events li { padding: 4px 0; border-bottom: 1px solid var(--line); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#events li b { color: var(--cyan); font-weight: 400; }

footer { display: flex; flex-wrap: wrap; gap: 6px 22px; font-size: 12px; color: var(--dim); letter-spacing: .08em; }
footer b { color: var(--yellow); font-weight: 500; }

// Demo overlay app. Every tile tests one step of the proof of concept.
'use strict';

const $ = (id) => document.getElementById(id);

// Step 1 + 2: live rendering. The clock and bar change every frame.
let rafCount = 0;
function tick(now) {
  const d = new Date();
  $('clock').textContent = `${d.toTimeString().slice(0, 8)}.${String(d.getMilliseconds()).padStart(3, '0')}`;
  $('sweep').style.left = `${((now / 20) % 130) - 22}%`;
  $('raf').textContent = ++rafCount;
  requestAnimationFrame(tick);
}
requestAnimationFrame(tick);

// Step 3: input.
let clicks = 0;
$('click').addEventListener('click', () => {
  $('clicks').textContent = ++clicks;
});
document.addEventListener('keydown', (e) => {
  $('key').textContent = e.key === ' ' ? 'Space' : e.key;
});

// Step 4: bridge calls.
async function call(method, format) {
  const out = $('result');
  out.className = 'mono result';
  out.textContent = `Calling ${method}...`;
  const started = performance.now();
  try {
    const result = await window.rednode.call(method);
    const ms = (performance.now() - started).toFixed(1);
    out.className = 'mono result ok';
    out.textContent = `${format(result)}  (${ms} ms)`;
  } catch (err) {
    out.className = 'mono result err';
    out.textContent = String(err.message || err).replace(/^Error invoking remote method '[^']+': (Error: )?/, '');
  }
}
$('pos').addEventListener('click', () =>
  call('player.position', (p) => `X ${p.x.toFixed(2)}  Y ${p.y.toFixed(2)}  Z ${p.z.toFixed(2)}`),
);
$('info').addEventListener('click', () => call('game.info', (r) => `REDnode frame ${r.frame}`));

// Status and events from the game.
function setLink(connected) {
  $('link').textContent = connected ? 'GAME LINKED' : 'NO GAME';
  $('link').className = `pill ${connected ? 'on' : 'off'}`;
}
function setMode(mode) {
  $('mode').textContent = (mode || 'passive').toUpperCase();
  $('mode').className = `pill${mode === 'interactive' ? ' hot' : ''}`;
}
function addEvent(html) {
  const list = $('events');
  if (list.firstElementChild?.classList.contains('dim')) list.innerHTML = '';
  const li = document.createElement('li');
  li.innerHTML = `<span class="dim">${new Date().toTimeString().slice(0, 8)}</span> ${html}`;
  list.prepend(li);
  while (list.children.length > 6) list.lastElementChild.remove();
}

window.rednode.on((m) => {
  if (m.event === 'link') {
    setLink(m.connected);
    addEvent(m.connected ? '<b>link</b> connected to the game' : '<b>link</b> lost');
  } else if (m.event === 'hello') {
    setLink(true);
    setMode(m.mode);
    addEvent(`<b>hello</b> ${m.plugin}`);
  } else if (m.event === 'overlay') {
    setMode(m.mode);
    addEvent(`<b>mode</b> ${m.mode}`);
  } else if (m.event === 'focus') {
    document.querySelector('.panel').classList.toggle('unfocused', !m.focused);
  } else if (m.event === 'game') {
    addEvent(`<b>${m.name.split(' ')[0]}</b> value ${m.value}, frame ${m.frame}`);
  }
});

window.rednode.state().then((s) => {
  setLink(s.connected);
  setMode(s.mode);
  $('windowed').hidden = !s.windowed;
});

{
  "id": "demo",
  "name": "Proof-of-concept demo",
  "version": "0.1.0",
  "author": "Edgemodders",
  "description": "The first overlay test: live HTML, input, the bridge and game events, written without the UI kit.",
  "entry": "index.html",
  "kind": "window",
  "width": 1024,
  "height": 640,
  "anchor": "center",
  "x": 0,
  "y": 0,
  "open": false
}