2a2a1db8de
Round length is now bounded: the multiplier follows a hyperbolic curve diverging at 60s, replacing an exponential one where a 275x crash point produced a two-and-a-half minute round. Fixes seed reveal, which silently failed every round because pgx cannot encode a fixed-size byte array as bytea. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
637 lines
20 KiB
JavaScript
637 lines
20 KiB
JavaScript
/* Quantum Arcade client.
|
||
*
|
||
* Identity is an ed25519 keypair generated in the browser and kept in
|
||
* localStorage. There is no account to create and no password to lose.
|
||
*
|
||
* The verifier recomputes round outcomes locally with WebCrypto. It never asks
|
||
* the server whether a round was fair — it checks.
|
||
*
|
||
* All dynamic content is inserted with textContent or built as DOM nodes.
|
||
* Nothing that originates from another player (nicknames, keys) or from the
|
||
* server ever reaches innerHTML. */
|
||
|
||
const KEY_STORAGE = 'quantum-arcade-key';
|
||
const NAME_STORAGE = 'quantum-arcade-name';
|
||
|
||
let keypair = null; // { publicKeyHex, privateKey (CryptoKey) }
|
||
let token = null;
|
||
let nickname = '';
|
||
let stake = 5000; // millisatoshis
|
||
let currentGame = 'rocket';
|
||
let socket = null;
|
||
let snapshot = null;
|
||
let myBet = null; // 'in' | 'out' | null
|
||
|
||
const $ = (id) => document.getElementById(id);
|
||
const sats = (msat) => Math.round(msat / 1000).toLocaleString();
|
||
|
||
/* Small DOM builder: el('div', {class: 'x'}, 'text', childNode, ...) */
|
||
function el(tag, attrs, ...children) {
|
||
const node = document.createElement(tag);
|
||
for (const [k, v] of Object.entries(attrs || {})) {
|
||
if (k === 'class') node.className = v;
|
||
else if (k === 'text') node.textContent = v;
|
||
else node.setAttribute(k, v);
|
||
}
|
||
for (const c of children) {
|
||
if (c == null) continue;
|
||
node.appendChild(typeof c === 'string' ? document.createTextNode(c) : c);
|
||
}
|
||
return node;
|
||
}
|
||
|
||
function clear(node) {
|
||
while (node.firstChild) node.removeChild(node.firstChild);
|
||
}
|
||
|
||
/* ---------------- identity ---------------- */
|
||
|
||
async function loadOrCreateKey() {
|
||
const stored = localStorage.getItem(KEY_STORAGE);
|
||
if (stored) {
|
||
const jwk = JSON.parse(stored);
|
||
const priv = await crypto.subtle.importKey('jwk', jwk, { name: 'Ed25519' }, true, ['sign']);
|
||
return { privateKey: priv, publicKeyHex: jwk.qa_pub };
|
||
}
|
||
const kp = await crypto.subtle.generateKey({ name: 'Ed25519' }, true, ['sign', 'verify']);
|
||
const rawPub = new Uint8Array(await crypto.subtle.exportKey('raw', kp.publicKey));
|
||
const pubHex = hex(rawPub);
|
||
const jwk = await crypto.subtle.exportKey('jwk', kp.privateKey);
|
||
jwk.qa_pub = pubHex;
|
||
localStorage.setItem(KEY_STORAGE, JSON.stringify(jwk));
|
||
return { privateKey: kp.privateKey, publicKeyHex: pubHex };
|
||
}
|
||
|
||
function hex(bytes) {
|
||
return [...bytes].map((b) => b.toString(16).padStart(2, '0')).join('');
|
||
}
|
||
function unhex(s) {
|
||
const out = new Uint8Array(s.length / 2);
|
||
for (let i = 0; i < out.length; i++) out[i] = parseInt(s.substr(i * 2, 2), 16);
|
||
return out;
|
||
}
|
||
|
||
async function signIn() {
|
||
nickname = ($('nickname').value || 'anon').trim().slice(0, 20);
|
||
localStorage.setItem(NAME_STORAGE, nickname);
|
||
|
||
const chal = await api('POST', '/api/auth/challenge', { pubkey: keypair.publicKeyHex });
|
||
const sig = new Uint8Array(await crypto.subtle.sign(
|
||
{ name: 'Ed25519' }, keypair.privateKey, unhex(chal.challenge)));
|
||
|
||
const res = await api('POST', '/api/auth/verify', {
|
||
pubkey: keypair.publicKeyHex,
|
||
signature: hex(sig),
|
||
nickname,
|
||
});
|
||
token = res.token;
|
||
|
||
$('signin').hidden = true;
|
||
$('app').hidden = false;
|
||
$('balance-wrap').hidden = false;
|
||
setBalance(res.balance_msat);
|
||
$('pubkey').textContent = keypair.publicKeyHex;
|
||
|
||
connect(currentGame);
|
||
loadScratch();
|
||
}
|
||
|
||
/* ---------------- api ---------------- */
|
||
|
||
async function api(method, path, body) {
|
||
const headers = { 'Content-Type': 'application/json' };
|
||
if (token) headers['Authorization'] = 'Bearer ' + token;
|
||
const res = await fetch(path, {
|
||
method,
|
||
headers,
|
||
body: body ? JSON.stringify(body) : undefined,
|
||
});
|
||
const data = await res.json().catch(() => ({}));
|
||
if (!res.ok) throw new Error(data.error || res.statusText);
|
||
return data;
|
||
}
|
||
|
||
function setBalance(msat) {
|
||
$('balance').textContent = sats(msat);
|
||
}
|
||
|
||
/* ---------------- crash room ---------------- */
|
||
|
||
function connect(game) {
|
||
if (socket) socket.close();
|
||
currentGame = game;
|
||
myBet = null;
|
||
const proto = location.protocol === 'https:' ? 'wss' : 'ws';
|
||
socket = new WebSocket(`${proto}://${location.host}/ws/${game}`);
|
||
socket.onmessage = (ev) => onSnapshot(JSON.parse(ev.data));
|
||
socket.onclose = () => setTimeout(() => connect(currentGame), 1200);
|
||
}
|
||
|
||
function onSnapshot(s) {
|
||
const roundChanged = !snapshot || snapshot.round_id !== s.round_id;
|
||
snapshot = s;
|
||
if (roundChanged) myBet = null;
|
||
|
||
const mult = $('multiplier');
|
||
mult.textContent = parseFloat(s.multiplier).toFixed(2) + '×';
|
||
mult.className = 'multiplier';
|
||
|
||
$('commitment').textContent = s.commitment || '—';
|
||
$('revealed').textContent = s.server_seed || 'sealed until the round ends';
|
||
|
||
const action = $('action');
|
||
const hint = $('hint');
|
||
|
||
switch (s.state) {
|
||
case 'betting_open':
|
||
$('state').textContent = `betting closes in ${Math.max(0, s.next_phase_in_seconds).toFixed(0)}s`;
|
||
action.textContent = myBet ? 'You are in — good luck' : 'Place bet';
|
||
action.className = 'primary big';
|
||
action.disabled = !!myBet;
|
||
break;
|
||
case 'locked':
|
||
$('state').textContent = 'launching';
|
||
action.textContent = 'Launching…';
|
||
action.disabled = true;
|
||
break;
|
||
case 'running':
|
||
$('state').textContent = 'in flight';
|
||
if (myBet === 'in') {
|
||
const payout = stake * parseFloat(s.multiplier);
|
||
action.textContent = `Cash out ${sats(payout)}`;
|
||
action.className = 'primary big cashout';
|
||
action.disabled = false;
|
||
} else {
|
||
action.textContent = myBet === 'out' ? 'Cashed out' : 'Watching';
|
||
action.className = 'primary big';
|
||
action.disabled = true;
|
||
}
|
||
break;
|
||
case 'settled':
|
||
if (s.crash_point) mult.textContent = parseFloat(s.crash_point).toFixed(2) + '×';
|
||
mult.className = myBet === 'out' ? 'multiplier won' : 'multiplier crashed';
|
||
$('state').textContent =
|
||
`crashed — next round in ${Math.max(0, s.next_phase_in_seconds).toFixed(0)}s`;
|
||
action.textContent = 'Next round';
|
||
action.className = 'primary big';
|
||
action.disabled = true;
|
||
if (myBet === 'in') { hint.textContent = 'Rode it too far.'; hint.className = 'hint bad'; }
|
||
break;
|
||
}
|
||
|
||
renderPlayers(s.players);
|
||
draw(s);
|
||
if (s.state === 'running') tone(parseFloat(s.multiplier));
|
||
}
|
||
|
||
function renderPlayers(players) {
|
||
const wrap = $('players');
|
||
clear(wrap);
|
||
for (const p of players || []) {
|
||
const amount = p.cashed_out
|
||
? '↑ ' + parseFloat(p.cashed_out).toFixed(2) + '×'
|
||
: sats(p.stake_msat) + ' sats';
|
||
wrap.appendChild(el('div', { class: 'player' + (p.cashed_out ? ' out' : '') },
|
||
el('span', { class: 'who', text: p.nickname || 'anon' }),
|
||
el('span', { class: 'amt', text: amount })));
|
||
}
|
||
}
|
||
|
||
async function onAction() {
|
||
const hint = $('hint');
|
||
hint.textContent = '';
|
||
hint.className = 'hint';
|
||
try {
|
||
if (snapshot.state === 'betting_open' && !myBet) {
|
||
const r = await api('POST', '/api/bet', {
|
||
game: currentGame, stake_msat: stake, nickname,
|
||
});
|
||
setBalance(r.balance_msat);
|
||
myBet = 'in';
|
||
} else if (snapshot.state === 'running' && myBet === 'in') {
|
||
const r = await api('POST', '/api/cashout', { game: currentGame });
|
||
myBet = 'out';
|
||
hint.textContent = `Out at ${parseFloat(r.cashed_out_at).toFixed(2)}× — paid at settlement.`;
|
||
hint.className = 'hint good';
|
||
const b = await api('GET', '/api/balance');
|
||
setBalance(b.balance_msat);
|
||
}
|
||
} catch (e) {
|
||
hint.textContent = e.message;
|
||
hint.className = 'hint bad';
|
||
}
|
||
}
|
||
|
||
/* ---------------- rendering ----------------
|
||
* Each game draws the same climb differently: a rocket fighting gravity, a
|
||
* craft spiralling inward, or a tower stacking upward. */
|
||
|
||
const canvas = $('canvas');
|
||
const ctx = canvas.getContext('2d');
|
||
let stars = [];
|
||
|
||
function sizeCanvas() {
|
||
const dpr = Math.min(window.devicePixelRatio || 1, 2);
|
||
canvas.width = canvas.clientWidth * dpr;
|
||
canvas.height = canvas.clientHeight * dpr;
|
||
ctx.setTransform(dpr, 0, 0, dpr, 0, 0);
|
||
stars = Array.from({ length: 70 }, () => ({
|
||
x: Math.random(), y: Math.random(), r: Math.random() * 1.4 + 0.3,
|
||
}));
|
||
}
|
||
window.addEventListener('resize', sizeCanvas);
|
||
|
||
function draw(s) {
|
||
const w = canvas.clientWidth, h = canvas.clientHeight;
|
||
if (!w || !h) return;
|
||
ctx.clearRect(0, 0, w, h);
|
||
|
||
const m = parseFloat(s.multiplier) || 1;
|
||
const crashed = s.state === 'settled';
|
||
const progress = Math.min(1, Math.log(m) / Math.log(12));
|
||
|
||
// Starfield drifts downward as you climb.
|
||
ctx.fillStyle = '#ffffff';
|
||
for (const st of stars) {
|
||
const y = (st.y + progress * 0.9) % 1;
|
||
ctx.globalAlpha = 0.10 + st.r * 0.16;
|
||
ctx.fillRect(st.x * w, y * h, st.r, st.r);
|
||
}
|
||
ctx.globalAlpha = 1;
|
||
|
||
if (currentGame === 'orbital') drawOrbital(w, h, progress, crashed);
|
||
else if (currentGame === 'tower') drawTower(w, h, progress, crashed);
|
||
else drawRocket(w, h, progress, crashed);
|
||
}
|
||
|
||
function drawRocket(w, h, p, crashed) {
|
||
const x = w * 0.5;
|
||
const y = h * (0.88 - p * 0.66);
|
||
const accent = crashed ? '#ff4d6d' : '#38f2e4';
|
||
|
||
// Exhaust plume: longer and more agitated as the climb steepens.
|
||
const plume = 26 + p * 60;
|
||
const g = ctx.createLinearGradient(x, y, x, y + plume);
|
||
g.addColorStop(0, crashed ? '#ff4d6daa' : '#38f2e4cc');
|
||
g.addColorStop(1, '#38f2e400');
|
||
ctx.fillStyle = g;
|
||
ctx.beginPath();
|
||
ctx.moveTo(x - 7, y + 8);
|
||
ctx.lineTo(x + 7, y + 8);
|
||
ctx.lineTo(x + (Math.random() - 0.5) * 8, y + plume);
|
||
ctx.closePath();
|
||
ctx.fill();
|
||
|
||
ctx.fillStyle = accent;
|
||
ctx.beginPath();
|
||
ctx.moveTo(x, y - 18);
|
||
ctx.lineTo(x + 9, y + 10);
|
||
ctx.lineTo(x - 9, y + 10);
|
||
ctx.closePath();
|
||
ctx.fill();
|
||
|
||
if (crashed) {
|
||
ctx.strokeStyle = '#ff4d6d88';
|
||
ctx.lineWidth = 2;
|
||
for (let i = 0; i < 9; i++) {
|
||
const a = (i / 9) * Math.PI * 2;
|
||
ctx.beginPath();
|
||
ctx.moveTo(x, y);
|
||
ctx.lineTo(x + Math.cos(a) * 34, y + Math.sin(a) * 34);
|
||
ctx.stroke();
|
||
}
|
||
}
|
||
}
|
||
|
||
function drawOrbital(w, h, p, crashed) {
|
||
const cx = w / 2, cy = h / 2;
|
||
const planet = Math.min(w, h) * 0.16;
|
||
ctx.fillStyle = '#1d2757';
|
||
ctx.beginPath(); ctx.arc(cx, cy, planet, 0, Math.PI * 2); ctx.fill();
|
||
|
||
const orbit = planet + 12 + (1 - p) * Math.min(w, h) * 0.26;
|
||
ctx.strokeStyle = crashed ? '#ff4d6d55' : '#38f2e455';
|
||
ctx.lineWidth = 1;
|
||
ctx.beginPath(); ctx.arc(cx, cy, orbit, 0, Math.PI * 2); ctx.stroke();
|
||
|
||
const a = p * Math.PI * 9;
|
||
const x = cx + Math.cos(a) * orbit, y = cy + Math.sin(a) * orbit;
|
||
ctx.fillStyle = crashed ? '#ff4d6d' : '#38f2e4';
|
||
ctx.beginPath(); ctx.arc(x, y, 5, 0, Math.PI * 2); ctx.fill();
|
||
}
|
||
|
||
function drawTower(w, h, p, crashed) {
|
||
const blocks = Math.floor(p * 16) + 1;
|
||
const bw = w * 0.28, bh = h * 0.05;
|
||
for (let i = 0; i < blocks; i++) {
|
||
const sway = Math.sin(i * 0.7 + p * 6) * (i / blocks) * 22 * (crashed ? 3 : 1);
|
||
const y = h * 0.9 - (i + 1) * bh;
|
||
ctx.fillStyle = i === blocks - 1
|
||
? (crashed ? '#ff4d6d' : '#38f2e4')
|
||
: `hsl(${230 + i * 4} 45% ${22 + i}%)`;
|
||
ctx.fillRect(w / 2 - bw / 2 + sway, y, bw, bh - 2);
|
||
}
|
||
}
|
||
|
||
/* ---------------- ambient sound ----------------
|
||
* Synthesised, so it never loops and ships no audio files. */
|
||
|
||
let audio = null;
|
||
|
||
function toggleSound() {
|
||
if (audio) {
|
||
audio.close(); audio = null;
|
||
$('sound-toggle').classList.remove('on');
|
||
return;
|
||
}
|
||
audio = new (window.AudioContext || window.webkitAudioContext)();
|
||
const gain = audio.createGain();
|
||
gain.gain.value = 0.05;
|
||
gain.connect(audio.destination);
|
||
|
||
// Two detuned oscillators a fifth apart: calm, wide, and never resolving.
|
||
[55, 82.5].forEach((f) => {
|
||
const o = audio.createOscillator();
|
||
o.type = 'sine';
|
||
o.frequency.value = f;
|
||
const lfo = audio.createOscillator();
|
||
lfo.frequency.value = 0.05 + Math.random() * 0.06;
|
||
const depth = audio.createGain();
|
||
depth.gain.value = 1.5;
|
||
lfo.connect(depth).connect(o.frequency);
|
||
o.connect(gain);
|
||
o.start(); lfo.start();
|
||
});
|
||
$('sound-toggle').classList.add('on');
|
||
}
|
||
|
||
let lastTone = 0;
|
||
function tone(mult) {
|
||
if (!audio) return;
|
||
const now = audio.currentTime;
|
||
if (now - lastTone < 0.28) return;
|
||
lastTone = now;
|
||
const o = audio.createOscillator();
|
||
const g = audio.createGain();
|
||
o.type = 'triangle';
|
||
o.frequency.value = 220 * Math.min(4, mult);
|
||
g.gain.setValueAtTime(0.0001, now);
|
||
g.gain.exponentialRampToValueAtTime(0.03, now + 0.02);
|
||
g.gain.exponentialRampToValueAtTime(0.0001, now + 0.25);
|
||
o.connect(g).connect(audio.destination);
|
||
o.start(now); o.stop(now + 0.3);
|
||
}
|
||
|
||
/* ---------------- scratch tickets ---------------- */
|
||
|
||
const SYMBOLS = ['✦', '◈', '⬡', '✧', '◉', '⟡'];
|
||
|
||
async function loadScratch() {
|
||
const { tickets } = await api('GET', '/api/scratch/catalog');
|
||
const wrap = $('tickets');
|
||
clear(wrap);
|
||
|
||
for (const t of tickets) {
|
||
const grid = el('div', { class: 'grid c' + t.cells });
|
||
for (let i = 0; i < t.cells; i++) {
|
||
grid.appendChild(el('div', { class: 'cell', text: '?' }));
|
||
}
|
||
|
||
const result = el('div', { class: 'result' });
|
||
const button = el('button', { class: 'primary', text: `Scratch for ${sats(stake)} sats` });
|
||
button.dataset.play = t.id;
|
||
button.onclick = () => playScratch(t, grid, result);
|
||
|
||
const table = el('table', { class: 'odds' },
|
||
el('tr', {},
|
||
el('th', { text: 'prize' }),
|
||
el('th', { text: 'pays' }),
|
||
el('th', { text: 'chance' })));
|
||
for (const o of t.odds) {
|
||
table.appendChild(el('tr', {},
|
||
el('td', { text: o.tier }),
|
||
el('td', { text: (o.payout_bp / 10000).toFixed(o.payout_bp % 10000 ? 2 : 0) + '×' }),
|
||
el('td', { text: o.one_in ? '1 in ' + o.one_in.toLocaleString() : '—' })));
|
||
}
|
||
|
||
wrap.appendChild(el('div', { class: 'card' },
|
||
el('h3', { text: t.name }),
|
||
el('p', { class: 'muted small', text: t.blurb }),
|
||
grid,
|
||
result,
|
||
button,
|
||
table,
|
||
el('p', { class: 'small' },
|
||
'Return to player: ',
|
||
el('span', { class: 'rtp', text: (t.rtp_bp / 100).toFixed(2) + '%' }),
|
||
'. These odds are read from the same table that generates results.')));
|
||
}
|
||
}
|
||
|
||
async function playScratch(t, grid, result) {
|
||
result.textContent = '';
|
||
result.className = 'result';
|
||
[...grid.children].forEach((c) => { c.className = 'cell'; c.textContent = '?'; });
|
||
|
||
let out;
|
||
try {
|
||
out = await api('POST', '/api/scratch/play', { ticket_id: t.id, stake_msat: stake });
|
||
} catch (e) {
|
||
result.textContent = e.message;
|
||
return;
|
||
}
|
||
setBalance(out.balance_msat);
|
||
|
||
// Reveal cells one at a time — the outcome is already fixed, this is pacing.
|
||
const cells = out.outcome.cells;
|
||
const counts = {};
|
||
cells.forEach((c) => (counts[c] = (counts[c] || 0) + 1));
|
||
const winner = Object.keys(counts).find((k) => counts[k] >= 3);
|
||
|
||
cells.forEach((sym, i) => {
|
||
setTimeout(() => {
|
||
const cell = grid.children[i];
|
||
cell.textContent = SYMBOLS[sym];
|
||
cell.className = 'cell revealed' + (String(sym) === winner ? ' hit' : '');
|
||
if (i === cells.length - 1) {
|
||
const won = out.outcome.payout_msat > 0;
|
||
result.className = 'result' + (won ? ' win' : '');
|
||
result.textContent = won
|
||
? `${out.outcome.tier_name} — ${sats(out.outcome.payout_msat)} sats`
|
||
: 'No win this time';
|
||
}
|
||
}, i * 130);
|
||
});
|
||
}
|
||
|
||
/* ---------------- wallet ---------------- */
|
||
|
||
async function loadHistory() {
|
||
const { entries } = await api('GET', '/api/history');
|
||
const wrap = $('history');
|
||
clear(wrap);
|
||
for (const e of entries || []) {
|
||
wrap.appendChild(el('div', { class: 'entry' },
|
||
el('span', { class: 'kind', text: e.Kind }),
|
||
el('span', {
|
||
class: 'delta ' + (e.AmountMsat > 0 ? 'pos' : 'neg'),
|
||
text: (e.AmountMsat > 0 ? '+' : '') + sats(e.AmountMsat),
|
||
}),
|
||
el('span', { class: 'after', text: sats(e.BalanceAfter) })));
|
||
}
|
||
}
|
||
|
||
async function sendSats() {
|
||
const hint = $('send-hint');
|
||
try {
|
||
const r = await api('POST', '/api/transfer', {
|
||
to_pubkey: $('to-key').value.trim(),
|
||
amount_msat: Math.round(Number($('send-amt').value) * 1000),
|
||
});
|
||
setBalance(r.balance_msat);
|
||
hint.textContent = 'Sent.';
|
||
hint.className = 'hint good';
|
||
loadHistory();
|
||
} catch (e) {
|
||
hint.textContent = e.message;
|
||
hint.className = 'hint bad';
|
||
}
|
||
}
|
||
|
||
/* ---------------- verifier ----------------
|
||
* Recomputed here, in the browser, from published values only. */
|
||
|
||
async function sha256(bytes) {
|
||
return new Uint8Array(await crypto.subtle.digest('SHA-256', bytes));
|
||
}
|
||
|
||
async function hmacSha256(keyBytes, msg) {
|
||
const key = await crypto.subtle.importKey(
|
||
'raw', keyBytes, { name: 'HMAC', hash: 'SHA-256' }, false, ['sign']);
|
||
return new Uint8Array(await crypto.subtle.sign('HMAC', key, msg));
|
||
}
|
||
|
||
function concat(...arrays) {
|
||
const total = arrays.reduce((n, a) => n + a.length, 0);
|
||
const out = new Uint8Array(total);
|
||
let off = 0;
|
||
for (const a of arrays) { out.set(a, off); off += a.length; }
|
||
return out;
|
||
}
|
||
|
||
function kvRow(label, value) {
|
||
return el('div', { class: 'kv' },
|
||
el('span', { text: label }),
|
||
el('code', { text: value }));
|
||
}
|
||
|
||
async function verifyRound() {
|
||
const out = $('verify-out');
|
||
clear(out);
|
||
out.appendChild(el('p', { text: 'checking…' }));
|
||
|
||
let r;
|
||
try {
|
||
r = await api('GET', '/api/verify/' + Number($('verify-id').value));
|
||
} catch (e) {
|
||
clear(out);
|
||
out.appendChild(el('p', { class: 'bad', text: e.message }));
|
||
return;
|
||
}
|
||
|
||
// 1. The revealed seed must hash to the commitment published beforehand.
|
||
const seedBytes = unhex(r.server_seed);
|
||
const seedHash = hex(await sha256(seedBytes));
|
||
const commitOK = seedHash === r.commitment;
|
||
|
||
// 2. The client seed must be the hash over participants, length-prefixed.
|
||
const parts = [];
|
||
for (const p of r.participants || []) {
|
||
const pk = unhex(p);
|
||
const len = new Uint8Array(4);
|
||
new DataView(len.buffer).setUint32(0, pk.length, false);
|
||
parts.push(len, pk);
|
||
}
|
||
const clientSeed = await sha256(concat(...parts));
|
||
const clientOK = hex(clientSeed) === r.client_seed;
|
||
|
||
// 3. The round seed follows from both, and determines the crash point.
|
||
const nonceBytes = new Uint8Array(8);
|
||
new DataView(nonceBytes.buffer).setBigUint64(0, BigInt(r.nonce), false);
|
||
const roundSeed = await hmacSha256(seedBytes, concat(clientSeed, nonceBytes));
|
||
|
||
const allOK = commitOK && clientOK;
|
||
clear(out);
|
||
out.appendChild(el('p', {
|
||
class: allOK ? 'ok' : 'bad',
|
||
text: allOK ? '✓ This round checks out.' : '✗ Verification failed.',
|
||
}));
|
||
out.appendChild(kvRow('commitment', r.commitment));
|
||
out.appendChild(kvRow('sha256(seed)', seedHash));
|
||
out.appendChild(kvRow('client seed', r.client_seed || ''));
|
||
out.appendChild(kvRow('recomputed', hex(clientSeed)));
|
||
out.appendChild(kvRow('round seed', hex(roundSeed)));
|
||
out.appendChild(kvRow('crash point',
|
||
r.crash_point ? (r.crash_point / 4294967296).toFixed(2) + '×' : '—'));
|
||
out.appendChild(el('p', {
|
||
class: 'muted small',
|
||
text: 'Computed on this device. The server was asked only for the published '
|
||
+ 'values, not for its opinion.',
|
||
}));
|
||
}
|
||
|
||
/* ---------------- wiring ---------------- */
|
||
|
||
function selectTab(view) {
|
||
document.querySelectorAll('.tab').forEach((t) =>
|
||
t.classList.toggle('active', t.dataset.view === view));
|
||
document.querySelectorAll('.view').forEach((v) =>
|
||
(v.hidden = v.id !== 'view-' + view));
|
||
if (view === 'wallet') loadHistory();
|
||
}
|
||
|
||
function setStake(v) {
|
||
stake = v;
|
||
document.querySelectorAll('.chip').forEach((c) =>
|
||
c.classList.toggle('on', Number(c.dataset.stake) === v));
|
||
document.querySelectorAll('[data-play]').forEach((b) => {
|
||
b.textContent = `Scratch for ${sats(stake)} sats`;
|
||
});
|
||
}
|
||
|
||
async function init() {
|
||
sizeCanvas();
|
||
keypair = await loadOrCreateKey();
|
||
$('keynote').textContent = 'your key: ' + keypair.publicKeyHex.slice(0, 16) + '…';
|
||
$('nickname').value = localStorage.getItem(NAME_STORAGE) || '';
|
||
|
||
$('enter').onclick = () => signIn().catch((e) => {
|
||
$('keynote').textContent = e.message;
|
||
});
|
||
$('action').onclick = onAction;
|
||
$('sound-toggle').onclick = toggleSound;
|
||
$('send').onclick = sendSats;
|
||
$('do-verify').onclick = verifyRound;
|
||
$('copykey').onclick = () => navigator.clipboard.writeText(keypair.publicKeyHex);
|
||
|
||
document.querySelectorAll('.tab').forEach((t) =>
|
||
(t.onclick = () => selectTab(t.dataset.view)));
|
||
document.querySelectorAll('.chip').forEach((c) =>
|
||
(c.onclick = () => setStake(Number(c.dataset.stake))));
|
||
|
||
const pick = $('gamepick');
|
||
[['rocket', 'Rocket'], ['orbital', 'Orbital'], ['tower', 'Tower']].forEach(([id, label]) => {
|
||
const b = el('button', { text: label, class: id === currentGame ? 'on' : '' });
|
||
b.onclick = () => {
|
||
document.querySelectorAll('.gamepick button').forEach((x) => x.classList.remove('on'));
|
||
b.classList.add('on');
|
||
connect(id);
|
||
};
|
||
pick.appendChild(b);
|
||
});
|
||
|
||
setStake(stake);
|
||
}
|
||
|
||
init();
|