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<!DOCTYPE html>
<html lang="fr">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover">
<link rel="icon" href="/favicon.ico" sizes="any">
<link rel="icon" type="image/png" sizes="32x32" href="/icon-32.png?v=2">
<link rel="icon" type="image/png" sizes="16x16" href="/icon-16.png?v=2">
<link rel="apple-touch-icon" href="/icon-192.png?v=2">
<link rel="manifest" href="/manifest.json">
<meta name="theme-color" content="#0f1222">
<title>Angle guessr</title>
<style>
:root{
--bg:#0f1222; --panel:#171a2b; --ink:#e9ecff; --muted:#a6adda; --accent:#7c5cff; --good:#2bd576; --bad:#ff6b6b;
}
*{box-sizing:border-box}
html,body{height:100%}
html{background:#0b0e1a}
body{
margin:0;
font-family:Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial;
background: radial-gradient(1200px 800px at 70% -10%, #1a1f3a 0%, #0f1222 60%, #0b0e1a 100%);
color:var(--ink);
display:flex; align-items:center; justify-content:center;
padding:24px;
overscroll-behavior:contain;
padding-left:max(24px, env(safe-area-inset-left));
padding-right:max(24px, env(safe-area-inset-right));
padding-bottom:max(24px, env(safe-area-inset-bottom));
-webkit-text-size-adjust:100%;
}
.app{width:min(920px, 100%);}
.card{
background:linear-gradient(180deg,#1a1e33 0%, #14182b 100%);
border:1px solid rgba(255,255,255,.06);
box-shadow:0 10px 30px rgba(0,0,0,.35), inset 0 1px 0 rgba(255,255,255,.04);
border-radius:20px; padding:24px; backdrop-filter:blur(6px);
}
h1{margin:0 0 12px; font-size:clamp(20px, 2.8vw, 34px); letter-spacing:.3px}
.sub{color:var(--muted); margin-bottom:18px}
.layout{display:grid; grid-template-columns: 1.3fr 1fr; gap:22px}
@media (max-width: 880px){.layout{grid-template-columns:1fr}}
.stage{
background: radial-gradient(600px 400px at 60% -20%, #1f2444, #151a2f);
border:1px solid rgba(255,255,255,.06);
border-radius:16px; padding:10px;
display:flex; align-items:center; justify-content:center;
aspect-ratio: 1/1; min-height: 320px;
}
svg{width:100%; height:100%}
.controls{background:var(--panel); border:1px solid rgba(255,255,255,.06); border-radius:16px; padding:16px}
.row{display:flex; gap:12px; align-items:center; flex-wrap:wrap}
/* Input + Confirm : 3/4 – 1/4 en permanence */
.inputline{ display:flex; align-items:center; justify-content:space-between; gap:8px; width:100% }
.inputline #guess{ flex:0 0 75%; min-width:0 }
.inputline #confirmBtn{ flex:0 0 25%; padding:10px; text-align:center }
input[type=number]{
background:#0f1326; color:var(--ink);
border:1px solid rgba(255,255,255,.12); border-radius:12px;
padding:12px 14px; font-size:16px; width:140px;
transition:border .15s ease, box-shadow .15s ease; outline:none;
}
input[type=number]:focus{border-color:var(--accent); box-shadow:0 0 0 6px rgba(124,92,255,.15)}
input[type=number]::-webkit-outer-spin-button, input[type=number]::-webkit-inner-spin-button{ -webkit-appearance:none; margin:0 }
input[type=number]{ -moz-appearance:textfield }
.btn{
appearance:none; border:none; cursor:pointer; color:white; font-weight:600; letter-spacing:.2px;
padding:12px 16px; border-radius:12px;
background:linear-gradient(180deg, #8a6bff, #6945ff); box-shadow:0 6px 16px rgba(105,69,255,.35);
transition:transform .05s ease
}
.btn:active{transform:translateY(1px)}
.btn.secondary{background:transparent; border:1px solid rgba(255,255,255,.18); box-shadow:none; color:var(--muted)}
.feedback{margin-top:14px; display:flex; gap:12px; align-items:center; flex-wrap:wrap}
.meta{margin-top:10px; color:var(--muted); font-size:14px}
.meter{height:10px; background:#0f1326; border-radius:999px; overflow:hidden; border:1px solid rgba(255,255,255,.08)}
.meter > div{height:100%; width:0%; background:linear-gradient(90deg,#2bd576,#ffd166,#ff8b6b,#ff6b6b); transition:width .25s ease}
#errorMsg { color: var(--bad); font-size: 14px; margin:6px 0 10px; opacity:0; transition:opacity .2s ease; }
#errorMsg.visible { opacity: 1; }
.guesses { margin-top: 4px; display: flex; flex-wrap: wrap; gap: 6px; }
.guess-item { background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.08); border-radius: 8px; padding: 4px 10px; font-size: 14px; color: var(--muted); transition: background .2s ease; }
.guess-item:hover { background: rgba(124,92,255,0.15); color: var(--ink); }
.guess-item.added { animation: pop .25s ease-out; }
@keyframes pop { 0%{transform:scale(.7);opacity:0} 60%{transform:scale(1.08);opacity:1} 100%{transform:scale(1)} }
.card-header{ display:flex; justify-content:flex-start; margin-bottom:12px; }
.backbtn{
display:inline-flex; align-items:center; gap:8px;
padding:10px 14px; border-radius:999px;
background:rgba(255,255,255,.06);
border:1px solid rgba(255,255,255,.12);
color:var(--ink); text-decoration:none; font-weight:600; line-height:1;
transition:background .15s ease, border-color .15s ease, transform .05s ease;
}
.backbtn:hover{ background:rgba(124,92,255,.16); border-color:rgba(124,92,255,.35); }
.backbtn:active{ transform:translateY(1px); }
.card-intro{
display:flex; align-items:flex-start; justify-content:flex-start; align-content:flex-start;
gap:12px 16px; margin-bottom:14px; flex-wrap:wrap;
}
.card-intro .sub{ margin:0; flex:1 1 auto; min-width:0 }
.streakchip, #streakBar{
display:inline-flex; align-items:center; gap:8px;
padding:8px 12px; border-radius:999px;
border:1px solid rgba(255,255,255,.12);
background:#0e1326; color:#ffd166; font-weight:700;
white-space:nowrap; box-shadow: inset 0 1px 0 rgba(255,255,255,.04);
margin:0; text-align:left;
}
/* Responsive */
@media (max-width: 640px){
.card-intro{ flex-direction:column; align-items:flex-start; gap:10px; }
.backbtn{ padding:8px 12px; font-size:14px; }
}
@media (max-width: 430px){
html,body{ height:100dvh; overflow:scroll }
.app{ height:100%; display:flex; flex-direction:column }
.card{ flex:1 1 auto; display:flex; flex-direction:column }
.layout{ grid-template-columns:1fr; gap:12px }
.stage{
aspect-ratio:auto; min-height:unset;
height:clamp(180px,60vw,320px);
padding:8px; border-radius:14px;
}
.card{ padding:14px; border-radius:16px }
.controls{ padding:12px; border-radius:14px }
.sub{ font-size:14px; margin-bottom:10px }
h1{ font-size:clamp(26px, 7vw, 36px); margin-bottom:10px }
}
@media (max-width: 360px){
.card{ padding:12px; border-radius:14px }
.stage{ height:clamp(160px, 58vw, 260px); padding:6px; border-radius:12px }
.controls{ padding:10px; border-radius:12px }
.streakchip, #streakBar{ width:100%; justify-content:center; }
}
/* Accuracy hidden by default; only visible on last guess */
#precision { display: none; }
#precision.visible { display: block; opacity: 1; }
#precision.invisible { display: none !important; opacity: 0; }
.madeby{
position:fixed; bottom:12px; left:50%; transform:translateX(-50%);
text-align:center; font-size:13px; color:var(--muted); opacity:.75;
letter-spacing:.3px; transition:opacity .2s ease, color .2s ease; pointer-events:none;
}
.madeby strong{ color:var(--ink) }
.madeby:hover{ opacity:1; color:var(--accent) }
</style>
</head>
<body>
<div class="app">
<div style="text-align:center;">
<h1 style="font-size: clamp(40px, 6vw, 70px); margin-bottom: 24px;">🎯 Angle Guessr</h1>
</div>
<div class="card">
<div class="card-header">
<a href="/" class="backbtn" aria-label="Retour au menu">← Menu</a>
</div>
<div class="card-intro">
<p class="sub">
You have <strong>5 attempts</strong> to guess the angle (1° to 179°).
Help: ⬆️/⬇️ and 🔥/🥶 depending on your accuracy.
</p>
<div id="streakBar" class="streakchip"></div>
</div>
<div class="layout">
<div class="stage" id="stage">
<svg viewBox="0 0 400 400">
<rect width="400" height="400" fill="url(#grid)" />
<circle cx="200" cy="200" r="3" fill="#a6adda" opacity=".9" />
<line id="rayA" x1="200" y1="200" x2="360" y2="200" stroke="#e9ecff" stroke-width="4" stroke-linecap="round"/>
<line id="rayB" x1="200" y1="200" x2="360" y2="200" stroke="#7c5cff" stroke-width="4" stroke-linecap="round"/>
<path id="arc" d="" fill="none" stroke="#ffd166" stroke-width="4" opacity=".9"/>
</svg>
</div>
<div class="controls">
<form id="form" autocomplete="off" novalidate>
<label class="discreet" for="guess">Your proposal</label>
<div class="inputline">
<input id="guess" name="guess" type="number" inputmode="numeric" min="1" max="179" placeholder="ex. 27" />
<button class="btn" type="submit" id="confirmBtn">Confirm</button>
</div>
<div id="errorMsg"></div>
<div class="row">
<button class="btn secondary" type="button" id="reset">New game</button>
</div>
</form>
<div id="feedback" class="feedback"></div>
<div id="precision" class="invisible">
<div class="meta">Accuracy</div>
<div class="meter"><div id="heatbar"></div></div>
</div>
<strong><div class="meta" id="stats"></div></strong>
<div class="meta" id="guesses-title" style="margin-top:8px; margin-bottom:8px; font-weight:600;"></div>
<div id="guesses-list" class="guesses"></div>
</div>
</div>
</div>
<footer class="madeby">
Made with ❤️ by <strong>GrandTh</strong>
</footer>
</div>
<script>
let targetAngle = 0;
let attempts = 0;
const maxAttempts = 5;
let previousGuesses = [];
let gameActive = false;
let autoTimer = null;
let autoRemaining = 0;
let lastWin = false;
const rayB = document.getElementById('rayB');
const arc = document.getElementById('arc');
const feedback = document.getElementById('feedback');
const heatbar = document.getElementById('heatbar');
const stats = document.getElementById('stats');
const form = document.getElementById('form');
const guessInput = document.getElementById('guess');
const resetBtn = document.getElementById('reset');
const errorMsg = document.getElementById('errorMsg');
const guessesTitle = document.getElementById('guesses-title');
const guessesList = document.getElementById('guesses-list');
const precisionDiv = document.getElementById('precision');
const GAME_KEY = 'angle_guessr_game_v1';
const STREAK_KEY = 'angle_guessr_streak_v1';
const BEST_KEY = 'angle_guessr_best_v1';
const SIG_KEY = 'angle_guessr_sig_v1';
const INSTALL_ID = 'angle_guessr_install_id_v1';
function randInt(min, max){return Math.floor(Math.random()*(max-min+1))+min;}
function pointAt(cx,cy,r,deg){const rad=deg*Math.PI/180;return{x:cx+r*Math.cos(rad),y:cy-r*Math.sin(rad)}}
function drawAngle(deg){
const c={x:200,y:200},r=160,p=pointAt(c.x,c.y,r,deg);
rayB.setAttribute('x2',p.x); rayB.setAttribute('y2',p.y);
const ar=52,s=pointAt(c.x,c.y,ar,0),e=pointAt(c.x,c.y,ar,deg),
d=`M ${s.x} ${s.y} A ${ar} ${ar} 0 0 0 ${e.x} ${e.y}`;
arc.setAttribute('d',d);
}
function animateAngle(start,end,duration){
const startTime=performance.now(); const diff=end-start;
function easeOut(t){return 1-Math.pow(1-t,3);}
function step(now){
const elapsed=now-startTime; const progress=Math.min(elapsed/duration,1);
const eased=easeOut(progress); const current=start+diff*eased;
drawAngle(current); if(progress<1)requestAnimationFrame(step);
}
requestAnimationFrame(step);
}
function heatEmoji(diff){if(diff===0)return'🎯 Parfait !';if(diff<=2)return'🔥🔥 Très chaud';if(diff<=5)return'🔥 Chaud';if(diff<=10)return'🙂 Tiède';if(diff<=20)return'🧊 Frais';return'🥶 Glacial';}
function arrowHint(g){if(g<targetAngle)return'⬆️ Plus haut';if(g>targetAngle)return'⬇️ Plus bas';return'✅ Exact';}
function heatPercent(diff){return(100-Math.min(diff,180)/180*100);}
function hideAccuracy() {
if (!precisionDiv) return;
precisionDiv.classList.add('invisible');
precisionDiv.classList.remove('visible');
if (heatbar) heatbar.style.width = '0%';
}
function showAccuracyFromDiff(diff) {
if (!precisionDiv) return;
if (heatbar) heatbar.style.width = heatPercent(diff) + '%';
precisionDiv.classList.remove('invisible');
precisionDiv.classList.add('visible');
}
function getInstallId(){
let id = localStorage.getItem(INSTALL_ID);
if(!id){
id = (crypto && crypto.randomUUID) ? crypto.randomUUID() : String(Math.random()).slice(2) + Date.now();
try { localStorage.setItem(INSTALL_ID, id); } catch {}
}
return id;
}
async function sha256(text){
const enc = new TextEncoder().encode(text);
const buf = await crypto.subtle.digest('SHA-256', enc);
return Array.from(new Uint8Array(buf)).map(b=>b.toString(16).padStart(2,'0')).join('');
}
async function computeSig(streak, best){
const material = `${streak}|${best}|${getInstallId()}|${navigator.userAgent}`;
return await sha256(material);
}
function getNum(key){ const v=Number(localStorage.getItem(key)); return Number.isFinite(v) ? v : 0; }
async function loadStreakSafe(){
const s = getNum(STREAK_KEY);
const b = getNum(BEST_KEY);
const sig = localStorage.getItem(SIG_KEY) || '';
const expect = await computeSig(s,b);
if(sig !== expect){
setStreak(0);
await saveSig(0, b);
return {streak:0, best:b};
}
return {streak:s, best:b};
}
async function saveSig(s,b){
try { localStorage.setItem(SIG_KEY, await computeSig(s,b)); } catch {}
}
function setStreak(v){ try{ localStorage.setItem(STREAK_KEY, String(v)); }catch{} }
function setBest(v){ try{ localStorage.setItem(BEST_KEY, String(v)); }catch{} }
async function bumpStreak(){
const cur = getNum(STREAK_KEY) + 1;
setStreak(cur);
const best = Math.max(getNum(BEST_KEY), cur);
setBest(best);
await saveSig(cur, best);
renderStreak(cur, best);
}
async function resetStreak(){
const best = getNum(BEST_KEY);
setStreak(0);
await saveSig(0, best);
renderStreak(0, best);
}
function renderStreak(s = getNum(STREAK_KEY), b = getNum(BEST_KEY)) {
const el = document.getElementById('streakBar');
if (!el) return;
el.textContent = s >= 1 ? `🔥${s} (best ${b})` : `(best ${b})`;
}
window.addEventListener('storage', async (e)=>{
if([STREAK_KEY,BEST_KEY,SIG_KEY].includes(e.key)){
await loadStreakSafe(); renderStreak();
}
});
function openIDB(){
return new Promise((resolve, reject) => {
const req = indexedDB.open('angle_guessr_keys_v1', 1);
req.onupgradeneeded = () => { req.result.createObjectStore('keys'); };
req.onsuccess = () => resolve(req.result);
req.onerror = () => reject(req.error);
});
}
async function putKeyInIDB(keyName, cryptoKey){
const db = await openIDB();
return new Promise((res, rej) => {
const tx = db.transaction('keys','readwrite');
tx.objectStore('keys').put(cryptoKey, keyName);
tx.oncomplete = () => { db.close(); res(true); };
tx.onerror = () => { db.close(); rej(tx.error); };
});
}
async function getKeyFromIDB(keyName){
const db = await openIDB();
return new Promise((res, rej) => {
const tx = db.transaction('keys','readonly');
const store = tx.objectStore('keys').get(keyName);
store.onsuccess = () => { db.close(); res(store.result || null); };
store.onerror = () => { db.close(); rej(store.error); };
});
}
async function getMasterKey(){
let key = await getKeyFromIDB('master');
if(key) return key;
key = await crypto.subtle.generateKey(
{ name: 'AES-GCM', length: 256 },
false,
['encrypt','decrypt']
);
await putKeyInIDB('master', key);
return key;
}
function toHex(buffer){
return Array.from(new Uint8Array(buffer)).map(b=>b.toString(16).padStart(2,'0')).join('');
}
function fromHex(hex){
const bytes = new Uint8Array(hex.length/2);
for(let i=0;i<bytes.length;i++) bytes[i] = parseInt(hex.substr(i*2,2),16);
return bytes.buffer;
}
async function encryptObject(obj){
const key = await getMasterKey();
const iv = crypto.getRandomValues(new Uint8Array(12));
const data = new TextEncoder().encode(JSON.stringify(obj));
const ct = await crypto.subtle.encrypt({ name: 'AES-GCM', iv }, key, data);
return { iv: toHex(iv.buffer), ct: toHex(ct) };
}
async function decryptObject(stored){
try {
const key = await getMasterKey();
const iv = new Uint8Array(fromHex(stored.iv));
const ct = fromHex(stored.ct);
const plain = await crypto.subtle.decrypt({ name:'AES-GCM', iv }, key, ct);
return JSON.parse(new TextDecoder().decode(plain));
} catch { return null; }
}
async function saveGame(){
const payload = { targetAngle, attempts, previousGuesses, gameActive };
try { const boxed = await encryptObject(payload); localStorage.setItem(GAME_KEY, JSON.stringify(boxed)); }
catch (e){ console.warn('saveGame failed', e); }
}
async function clearGame(){ try { localStorage.removeItem(GAME_KEY); } catch {} }
async function restoreGame(){
const raw = localStorage.getItem(GAME_KEY);
if(!raw) return false;
try{
const boxed = JSON.parse(raw);
const g = await decryptObject(boxed);
if(!g || typeof g !== 'object') return false;
targetAngle = g.targetAngle ?? randInt(1,179);
attempts = g.attempts ?? 0;
previousGuesses = Array.isArray(g.previousGuesses) ? g.previousGuesses : [];
gameActive = !!g.gameActive;
drawAngle(targetAngle);
feedback.innerHTML = '';
if (!gameActive && previousGuesses.length) {
const last = previousGuesses[previousGuesses.length-1];
showAccuracyFromDiff(Math.abs(last - targetAngle));
} else {
hideAccuracy();
}
stats.textContent = gameActive ? `Try ${attempts}/${maxAttempts}` : `Game over.`;
updateGuesses();
guessInput.disabled = !gameActive;
resetBtn.disabled = gameActive;
return true;
}catch(err){
console.warn('restoreGame failed', err);
return false;
}
}
function updateGuesses(){
if(previousGuesses.length===0){
guessesTitle.textContent=''; guessesList.innerHTML=''; return;
}
guessesTitle.textContent='🧠 Your previous attempts :';
guessesList.innerHTML='';
previousGuesses.forEach((g, i)=>{
const item=document.createElement('div');
item.className='guess-item';
item.textContent=`${g}°`;
guessesList.appendChild(item);
if(i===previousGuesses.length-1){ void item.offsetWidth; item.classList.add('added'); }
});
}
function lockNewGameButton(){ resetBtn.disabled = gameActive; }
function clearAutoNext(){
if(autoTimer){ clearInterval(autoTimer); autoTimer = null; }
autoRemaining = 0;
}
function startAutoNext(seconds){
clearAutoNext();
autoRemaining = seconds;
appendCountdownToStats();
autoTimer = setInterval(()=>{
autoRemaining--;
if(autoRemaining <= 0){
clearAutoNext();
newGame();
return;
}
appendCountdownToStats();
}, 1000);
}
function appendCountdownToStats(){
const base = stats.dataset.baseMsg || stats.textContent || '';
stats.textContent = `${base} · recovery in ${autoRemaining}s`;
}
function setStats(msg){
stats.dataset.baseMsg = msg;
stats.textContent = msg;
}
function newGame(){
clearAutoNext();
lastWin = false;
attempts=0; previousGuesses=[]; targetAngle=randInt(1,179);
hideAccuracy();
gameActive = true;
feedback.innerHTML='';
heatbar.style.width='0%';
setStats('New game, you have 5 attempts.');
guessesTitle.textContent=''; guessesList.innerHTML='';
guessInput.disabled=false; guessInput.value=''; errorMsg.textContent=''; errorMsg.classList.remove('visible');
lockNewGameButton();
animateAngle(0,targetAngle,500);
setTimeout(()=>guessInput.focus(), 0);
}
form.addEventListener('submit', async (e)=>{
e.preventDefault();
errorMsg.textContent=''; errorMsg.classList.remove('visible');
if(!gameActive){ return; }
const value=guessInput.value.trim();
if(value===''){
errorMsg.textContent='⚠️ Enter a value before confirming !';
errorMsg.classList.add('visible');
return;
}
if(attempts>=maxAttempts) return;
const g=Number(value);
if(!Number.isFinite(g)) return;
const guess=Math.max(1,Math.min(179,Math.round(g)));
attempts++;
previousGuesses.push(guess);
updateGuesses();
const diff=Math.abs(guess-targetAngle);
feedback.innerHTML='';
const arrow=document.createElement('div');arrow.className='chip';arrow.textContent=arrowHint(guess);
const heat=document.createElement('div');heat.className='chip';heat.textContent=heatEmoji(diff);
feedback.appendChild(arrow); feedback.appendChild(heat);
if (guess === targetAngle) {
showAccuracyFromDiff(diff);
} else if (attempts >= maxAttempts - 1) {
showAccuracyFromDiff(diff);
} else {
hideAccuracy();
}
if(guess===targetAngle){
lastWin = true;
setStats(`Well done! The angle was ${targetAngle}°. Found in ${attempts} attempts. 🔥`);
guessInput.disabled=true;
gameActive = false;
lockNewGameButton();
clearGame();
await bumpStreak();
startAutoNext(5);
return;
}
if(attempts>=maxAttempts){
lastWin = false;
setStats(`Lost 💀 The angle was ${targetAngle}°.`);
guessInput.disabled=true;
gameActive = false;
lockNewGameButton();
clearGame();
await resetStreak();
startAutoNext(5);
return;
}
setStats(`Try ${attempts}/${maxAttempts}`);
saveGame();
guessInput.value = '';
guessInput.focus();
});
resetBtn.addEventListener('click', ()=>{
if(!resetBtn.disabled) newGame();
});
window.addEventListener('keydown',ev=>{
const key = ev.key.toLowerCase();
if(key === 'r' && !resetBtn.disabled){ newGame(); }
if(ev.key === 'Enter' && !gameActive && lastWin){
newGame();
}
});
window.addEventListener('beforeunload', ()=>{ if(gameActive) saveGame(); });
(async function init(){
await loadStreakSafe();
renderStreak();
const restored = await restoreGame();
if (!restored) {
newGame();
} else {
lockNewGameButton();
if(gameActive){ setTimeout(()=>guessInput.focus(), 0); }
}
})();
</script>
</body>
</html>