Run Detail
completedripple-65b-previewRecorded for these videos
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Provider
openrouter
Challenge Version
v2.0
Turns
1
Duration
408.1s
Total Tokens
41,887
Input Tokens
743
Output Tokens
41,144
Reasoning Effort
default
Est. Cost
$0.0248
Started
11/6/2026, 1:45:34 PM
OR Provider
GMICloud
Finish Reason
stop
Generation ID
gen-1793972733-uRTOfCs95fZfXqLEZbsv
Turns (1)
Turn #1
743 in41,144 out41,887 total408.1s
user
You make short animated pieces for the web, and you have spent time on the part of the internet that makes cats famous.
Build me a single HTML page: a cat in a living room that lifts off the floor and spins in the air when you click it.
The reference
Make this the Oiia Cat — the spinning cat meme, the one whose loop is written out as "oiia oiia oiiaiooooiai". Match the original's look and feel, not a generic rotation:
- A cream-and-white cat sitting square to the camera, eyes wide, staring straight down the lens, doing nothing.
- It starts turning on its vertical axis. The turn accelerates until the cat is a blur and the face is no longer readable.
- The "oiia" vocal rides the spin. Rate and pitch climb together with it, so the sound is the spin.
- In the edits this page is chasing, the cat leaves the floor. It rises as it winds up and spins in midair, and the room gets pulled into whatever the edit is doing.
Build toward what that meme feels like at full speed: too fast, too loud, and funnier every time it goes further.
The build
- It opens quiet. The cat sitting in a real living room, doing nothing in particular. Push the realism as far as one file will take you — light that comes from somewhere in the room, depth behind the cat, fur that is not a flat shape, a floor that the cat is actually resting on. Someone arriving on this page should need a second to work out that it is not a photograph. That opening second is the whole joke and it only pays off if the room is convincing first.
- Click the cat and it activates: it turns to face the viewer, lifts off the floor, and spins on its vertical axis in midair, fast, with the room going with it.
- Every click after that escalates, and escalation here means crazier, not just faster. Four stages at least, each visibly and inventively past the one before — what the cat does, how high it goes, what happens to the room, what happens to the laws of physics, what else joins in. Stage four should be the one that makes someone send the page to a friend. It still has to be worth watching: a strobing white rectangle is not stage four.
- It makes the sound. The "oiia" loop, synthesized in the file with Web Audio, rising as the spin gets faster. Making it read as a voice rather than as a tone is most of this requirement.
- Sound starts on the click and never before, and I can mute it.
House rules
- One file. Everything inline — no CDN, no external stylesheet, font, script or image.
data:URIs are fine. - No libraries.
- No network at runtime.
- No
localStorage,sessionStorage, cookies orindexedDB— sandboxed frame, they throw. - Return the file as exactly one fenced
htmlblock.
Answer in exactly these sections
The page
The single fenced html block.
The notes
Five bullets.
- How the opening frame gets its realism, and where that realism gives out.
- What you did to make it read as the Oiia cat rather than as a cat that rotates.
- The four stages, in order, and what makes each one crazier than the last.
- How the voice is synthesized, and what keeps it locked to the spin.
- The part you would fix with more time.
assistant
Here's a single HTML file that turns a realistic living-room cat into a spinning, sound-making meme. Click the cat to trigger four escalating stages of lift, spin, and chaos.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
<title>Oiia Cat</title>
<style>
* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { width: 100%; height: 100%; overflow: hidden; background: #0d0b09; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
canvas { display: block; width: 100vw; height: 100vh; touch-action: none; cursor: pointer; }
#hud {
position: fixed; top: 14px; right: 14px; z-index: 10;
display: flex; align-items: center; gap: 9px;
font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
color: rgba(255,255,255,0.5);
background: rgba(20,14,8,0.35);
border: 1px solid rgba(255,255,255,0.12);
padding: 8px 13px; border-radius: 999px;
backdrop-filter: blur(10px);
-webkit-backdrop-filter: blur(10px);
user-select: none;
transition: opacity 0.6s;
}
#mute {
width: 30px; height: 30px; border-radius: 50%;
border: 1px solid rgba(255,255,255,0.25);
background: rgba(255,255,255,0.08);
color: #fff; font-size: 13px; cursor: pointer;
display: flex; align-items: center; justify-content: center;
transition: background 0.15s, transform 0.15s;
}
#mute:hover { background: rgba(255,255,255,0.2); }
#mute.on { background: rgba(255,90,90,0.28); }
#hint { opacity: 1; }
</style>
</head>
<body>
<canvas id="c"></canvas>
<div id="hud">
<button id="mute" title="Mute">🔊</button>
<span id="hint">click the cat</span>
</div>
<script>
(function () {
'use strict';
/* ============================================================
SETUP
============================================================ */
const cvs = document.getElementById('c');
const ctx = cvs.getContext('2d');
const muteBtn = document.getElementById('mute');
const hint = document.getElementById('hint');
let W = 0, H = 0, DPR = 1;
let noiseTex = null;
let roomCanvas = null;
let catBuffer = null, catBufCtx = null;
const CATBUF = 360; // logical size of the cat offscreen buffer
const HAS_FILTER = 'filter' in ctx;
/* ============================================================
UTILITIES
============================================================ */
function makeNoise(w, h) {
const c = document.createElement('canvas');
c.width = w; c.height = h;
const x = c.getContext('2d');
const img = x.createImageData(w, h);
const d = img.data;
for (let i = 0; i < d.length; i += 4) {
const v = (Math.random() * 255) | 0;
d[i] = d[i + 1] = d[i + 2] = v;
d[i + 3] = 255;
}
x.putImageData(img, 0, 0);
return c;
}
function rr(g, x, y, w, h, r) {
r = Math.max(0, Math.min(r, Math.abs(w) / 2, Math.abs(h) / 2));
g.beginPath();
g.moveTo(x + r, y);
g.arcTo(x + w, y, x + w, y + h, r);
g.arcTo(x + w, y + h, x, y + h, r);
g.arcTo(x, y + h, x, y, r);
g.arcTo(x, y, x + w, y, r);
g.closePath();
}
/* ============================================================
ROOM (baked once, reused with transforms)
============================================================ */
function buildRoom() {
const b = document.createElement('canvas');
b.width = W; b.height = H;
const g = b.getContext('2d');
const floorY = H * 0.63;
/* ---- wall ---- */
let grad = g.createLinearGradient(0, 0, 0, floorY);
grad.addColorStop(0, '#f3e9d9');
grad.addColorStop(0.45, '#e9dbc1');
grad.addColorStop(1, '#dcc39a');
g.fillStyle = grad;
g.fillRect(0, 0, W, floorY);
g.save();
g.imageSmoothingEnabled = false;
g.globalAlpha = 0.055;
g.drawImage(noiseTex, 0, 0, W, floorY);
g.restore();
/* ---- window light (left) ---- */
const wx = W * 0.07, wy = H * 0.09, ww = W * 0.20, wh = H * 0.27;
const light = g.createRadialGradient(wx + ww / 2, wy + wh / 2, 20,
wx + ww / 2, wy + wh / 2, Math.max(ww, wh) * 1.15);
light.addColorStop(0, 'rgba(255,246,216,0.80)');
light.addColorStop(0.45,'rgba(255,246,216,0.24)');
light.addColorStop(1, 'rgba(255,246,216,0)');
g.fillStyle = light;
rr(g, wx - 70, wy - 70, ww + 140, wh + 140, 55);
g.fill();
/* ---- window frame ---- */
g.fillStyle = '#7d6a52';
rr(g, wx, wy, ww, wh, 7);
g.fill();
g.fillStyle = 'rgba(190,225,255,0.32)';
rr(g, wx + 9, wy + 9, ww - 18, wh - 18, 4);
g.fill();
g.strokeStyle = '#5f4d3a';
g.lineWidth = Math.max(5, W * 0.007);
g.beginPath();
g.moveTo(wx + ww / 2, wy + 9); g.lineTo(wx + ww / 2, wy + wh - 9);
g.moveTo(wx + 9, wy + wh / 2); g.lineTo(wx + ww - 9, wy + wh / 2);
g.stroke();
/* ---- sofa (right) ---- */
const sx = W * 0.60, sy = floorY - H * 0.17;
const sw = W * 0.32, sh = H * 0.17;
const sg = g.createLinearGradient(sx, sy, sx + sw, sy + sh);
sg.addColorStop(0, '#4d3b2c');
sg.addColorStop(1, '#2b1d14');
g.fillStyle = sg;
rr(g, sx, sy, sw, sh, Math.min(sw, sh) * 0.45);
g.fill();
g.fillStyle = '#3a2a20';
rr(g, sx - 20, sy + sh * 0.32, 20, sh * 0.55, 9);
g.fill();
/* ---- plant (far wall, left) ---- */
const px = W * 0.20, py = floorY - H * 0.30;
g.fillStyle = '#2f3a26';
g.beginPath();
g.ellipse(px, py + H * 0.06, W * 0.05, H * 0.09, 0, 0, Math.PI * 2);
g.fill();
g.fillStyle = '#3d5a34';
g.beginPath();
g.ellipse(px, py, W * 0.075, H * 0.16, 0, 0, Math.PI * 2);
g.fill();
/* ---- floor ---- */
const fg = g.createLinearGradient(0, floorY, 0, H);
fg.addColorStop(0, '#c9a878');
fg.addColorStop(1, '#7a5a3a');
g.fillStyle = fg;
g.fillRect(0, floorY, W, H - floorY);
/* ---- floorboards ---- */
g.save();
g.strokeStyle = 'rgba(0,0,0,0.075)';
g.lineWidth = 1;
const vpX = W * 0.42, vpY = floorY;
for (let i = -20; i <= 20; i++) {
const bx = W * 0.5 + i * W * 0.082;
g.beginPath();
g.moveTo(vpX, vpY);
g.lineTo(bx, H);
g.stroke();
}
g.restore();
/* ---- vignette ---- */
const vg = g.createRadialGradient(W / 2, H * 0.5, Math.min(W, H) * 0.28,
W / 2, H * 0.5, Math.max(W, H) * 0.78);
vg.addColorStop(0, 'rgba(0,0,0,0)');
vg.addColorStop(1, 'rgba(18,8,0,0.5)');
g.fillStyle = vg;
g.fillRect(0, 0, W, H);
roomCanvas = b;
}
/* ============================================================
CAT (drawn centred at origin, scale 1)
============================================================ */
function drawCatBody(g, s) {
const FUR = '#f2e5d3';
const FURD = '#dfc7a4';
const FURL = '#fcf5ec';
const PINK = '#e79ba3';
const PINKD = '#c47f87';
const DARK = '#2b2119';
const DARK2 = '#3e342b';
function grain(pathFn, fill) {
g.save();
pathFn();
g.clip();
g.fillStyle = fill;
g.fill();
g.save();
g.imageSmoothingEnabled = false;
g.globalAlpha = 0.055;
g.globalCompositeOperation = 'multiply';
g.drawImage(noiseTex, -60 * s, -60 * s, 300 * s, 300 * s);
g.restore();
g.save();
g.globalAlpha = 0.035;
g.globalCompositeOperation = 'screen';
g.drawImage(noiseTex, -60 * s + 47, -60 * s + 29, 300 * s, 300 * s);
g.restore();
g.restore();
}
/* ---- tail ---- */
g.save();
g.beginPath();
g.moveTo(46 * s, 22 * s);
g.bezierCurveTo(104 * s, 12 * s, 134 * s, -38 * s, 112 * s, -92 * s);
g.bezierCurveTo(100 * s, -132 * s, 70 * s, -142 * s, 56 * s, -120 * s);
g.bezierCurveTo(45 * s, -102 * s, 48 * s, -76 * s, 54 * s, -56 * s);
g.closePath();
g.fillStyle = FURD;
g.fill();
g.save();
g.clip();
g.strokeStyle = 'rgba(110,72,36,0.22)';
g.lineWidth = 3 * s;
g.beginPath();
g.moveTo(76 * s, -18 * s);
g.quadraticCurveTo(104 * s, -46 * s, 94 * s, -76 * s);
g.moveTo(70 * s, -52 * s);
g.quadraticCurveTo(86 * s, -78 * s, 76 * s, -104 * s);
g.stroke();
g.restore();
g.restore();
/* ---- body ---- */
function bodyPath() {
g.beginPath();
g.moveTo(-66 * s, -28 * s);
g.bezierCurveTo(-100 * s, 14 * s, -94 * s, 78 * s, -58 * s, 100 * s);
g.bezierCurveTo(-32 * s, 118 * s, 32 * s, 118 * s, 58 * s, 100 * s);
g.bezierCurveTo(94 * s, 78 * s, 100 * s, 14 * s, 66 * s, -28 * s);
g.closePath();
}
grain(bodyPath, FUR);
/* ---- chest ---- */
function chestPath() {
g.beginPath();
g.ellipse(0, 12 * s, 62 * s, 74 * s, 0, 0, Math.PI * 2);
}
grain(chestPath, FURL);
/* ---- front paws ---- */
for (const sx of [-1, 1]) {
(function (sx) {
function pawPath() {
g.beginPath();
g.ellipse(sx * 44 * s, 96 * s, 27 * s, 15 * s, 0, 0, Math.PI * 2);
}
grain(pawPath, FURL);
})(sx);
}
/* ---- head ---- */
function headPath() {
g.beginPath();
g.ellipse(0, -96 * s, 58 * s, 56 * s, 0, 0, Math.PI * 2);
}
grain(headPath, FURL);
/* ---- ears ---- */
for (const sx of [-1, 1]) {
(function (sx) {
function earPath() {
g.beginPath();
g.moveTo(sx * 30 * s, -138 * s);
g.lineTo(sx * 52 * s, -184 * s);
g.lineTo(sx * 70 * s, -124 * s);
g.closePath();
}
grain(earPath, FUR);
function innerPath() {
g.beginPath();
g.moveTo(sx * 36 * s, -146 * s);
g.lineTo(sx * 46 * s, -172 * s);
g.lineTo(sx * 60 * s, -132 * s);
g.closePath();
}
grain(innerPath, PINK);
})(sx);
}
/* ---- muzzle ---- */
function muzzlePath() {
g.beginPath();
g.ellipse(0, -74 * s, 30 * s, 22 * s, 0, 0, Math.PI * 2);
}
grain(muzzlePath, FURL);
/* ---- nose ---- */
g.save();
g.beginPath();
g.moveTo(-8 * s, -80 * s);
g.lineTo(8 * s, -80 * s);
g.lineTo(0, -68 * s);
g.closePath();
g.fillStyle = PINK;
g.fill();
g.restore();
/* ---- mouth ---- */
g.save();
g.strokeStyle = DARK2;
g.lineWidth = 2.2 * s;
g.lineCap = 'round';
g.beginPath();
g.moveTo(0, -68 * s);
g.quadraticCurveTo(-9 * s, -62 * s, -13 * s, -56 * s);
g.moveTo(0, -68 * s);
g.quadraticCurveTo(9 * s, -62 * s, 13 * s, -56 * s);
g.stroke();
g.restore();
/* ---- eyes ---- */
for (const sx of [-1, 1]) {
(function (sx) {
g.save();
g.beginPath();
g.ellipse(sx * 30 * s, -100 * s, 17 * s, 21 * s, 0, 0, Math.PI * 2);
g.fillStyle = '#ffffff';
g.fill();
g.restore();
g.save();
g.beginPath();
g.ellipse(sx * 30 * s, -100 * s, 6.5 * s, 15 * s, 0, 0, Math.PI * 2);
g.fillStyle = DARK;
g.fill();
g.restore();
g.save();
g.beginPath();
g.arc(sx * 26 * s, -107 * s, 4 * s, 0, Math.PI * 2);
g.fillStyle = 'rgba(255,255,255,0.92)';
g.fill();
g.restore();
})(sx);
}
/* ---- whiskers ---- */
g.save();
g.strokeStyle = 'rgba(190,165,140,0.55)';
g.lineWidth = 1.4 * s;
g.lineCap = 'round';
for (const sx of [-1, 1]) {
g.beginPath();
g.moveTo(sx * 52 * s, -84 * s);
g.lineTo(sx * 84 * s, -92 * s);
g.moveTo(sx * 52 * s, -96 * s);
g.lineTo(sx * 86 * s, -96 * s);
g.moveTo(sx * 52 * s, -108 * s);
g.lineTo(sx * 82 * s, -104 * s);
g.stroke();
}
g.restore();
}
function renderCatBuffer(headTilt) {
const g = catBufCtx;
g.setTransform(1, 0, 0, 1, 0, 0);
g.clearRect(0, 0, CATBUF * DPR, CATBUF * DPR);
g.save();
g.setTransform(DPR, 0, 0, DPR, 0, 0);
g.translate(CATBUF / 2, CATBUF / 2);
g.rotate(headTilt);
drawCatBody(g, 1);
g.restore();
}
/* ============================================================
AUDIO — "oiia" voice synthesizer
============================================================ */
let audioCtx = null, masterGain = null, comp = null, noiseBuf = null;
let muted = false;
let nextSchedTime = 0, schedCount = 0, schedTimer = null;
const SEQ = ['oi', 'oi', 'a', 'i', 'oi', 'oi', 'a', 'i', 'o'];
const VOW = {
oi: { f0: 1.00, f1: 1.78, fm: 820, f1m: 1950, d: 0.20 },
a: { f0: 0.85, f1: 1.05, fm: 1160, f1m: 960, d: 0.16 },
i: { f0: 1.55, f1: 2.12, fm: 2060, f1m: 2480, d: 0.13 },
o: { f0: 0.90, f1: 1.16, fm: 660, f1m: 870, d: 0.26 }
};
function initAudio() {
if (audioCtx) {
if (audioCtx.state === 'suspended') audioCtx.resume();
return;
}
const AC = window.AudioContext || window.webkitAudioContext;
if (!AC) return;
audioCtx = new AC();
masterGain = audioCtx.createGain();
masterGain.gain.value = muted ? 0 : 0.9;
comp = audioCtx.createDynamicsCompressor();
comp.threshold.value = -14;
comp.knee.value = 28;
comp.ratio.value = 5;
comp.attack.value = 0.004;
comp.release.value = 0.25;
masterGain.connect(comp);
comp.connect(audioCtx.destination);
noiseBuf = audioCtx.createBuffer(1, Math.floor(audioCtx.sampleRate * 0.4), audioCtx.sampleRate);
const nd = noiseBuf.getChannelData(0);
for (let i = 0; i < nd.length; i++) nd[i] = Math.random() * 2 - 1;
nextSchedTime = audioCtx.currentTime + 0.12;
schedTimer = setInterval(scheduler, 60);
}
function playSyllable(t0, f0, f1, fm, f1m, dur, peak) {
const ctx = audioCtx;
const t1 = t0 + dur;
const stopAt = t1 + 0.035;
/* carrier */
const osc = ctx.createOscillator();
osc.type = 'sawtooth';
osc.frequency.setValueAtTime(f0, t0);
osc.frequency.exponentialRampToValueAtTime(f1, t1);
const osc2 = ctx.createOscillator();
osc2.type = 'triangle';
osc2.frequency.setValueAtTime(f0 * 2, t0);
osc2.frequency.exponentialRampToValueAtTime(f1 * 2, t1);
const g2 = ctx.createGain();
g2.gain.value = 0.22;
/* vibrato for organic pitch wobble */
const lfo = ctx.createOscillator();
lfo.type = 'sine';
lfo.frequency.value = 20 + Math.random() * 20;
const lfoG = ctx.createGain();
lfoG.gain.value = f0 * 0.014;
lfo.connect(lfoG);
lfoG.connect(osc.frequency);
/* breath noise */
const nz = ctx.createBufferSource();
nz.buffer = noiseBuf;
nz.loop = true;
const gn = ctx.createGain();
gn.gain.value = 0.10;
/* formant shaping — this is what makes it a vowel, not a tone */
const bp = ctx.createBiquadFilter();
bp.type = 'bandpass';
bp.Q.value = 6;
bp.frequency.setValueAtTime(fm, t0);
bp.frequency.exponentialRampToValueAtTime(f1m, t1);
const lp = ctx.createBiquadFilter();
lp.type = 'lowpass';
lp.frequency.setValueAtTime(5200, t0);
lp.frequency.exponentialRampToValueAtTime(3100, t1);
/* amplitude envelope */
const env = ctx.createGain();
env.gain.setValueAtTime(0.0001, t0);
env.gain.exponentialRampToValueAtTime(1, t0 + 0.010);
env.gain.setValueAtTime(1, t0 + 0.010);
env.gain.exponentialRampToValueAtTime(0.0001, t1);
const out = ctx.createGain();
out.gain.value = peak;
osc.connect(bp);
osc2.connect(g2).connect(bp);
nz.connect(gn).connect(bp);
bp.connect(lp).connect(env).connect(out).connect(masterGain);
osc.start(t0); osc.stop(stopAt);
osc2.start(t0); osc2.stop(stopAt);
nz.start(t0); nz.stop(stopAt);
lfo.start(t0); lfo.stop(stopAt);
}
function scheduler() {
if (!audioCtx) return;
const now = audioCtx.currentTime;
if (nextSchedTime < now) nextSchedTime = now + 0.02;
const stage = state.stage;
const rev = Math.max(0, state.speed) / (2 * Math.PI);
const rate = Math.min(14, 1.6 + rev * 2.2);
const interval = 1 / rate;
const pitchMul = Math.min(4.0, 1 + rev * 1.4);
const speedMul = Math.min(1.8, 1 + rev * 0.5);
while (nextSchedTime < now + 0.2) {
const key = SEQ[schedCount % SEQ.length];
const v = VOW[key];
const dur = v.d * speedMul;
const f0 = 190 * pitchMul * v.f0;
const f1 = 190 * pitchMul * v.f1;
const peak = 0.30 * (0.55 + 0.45 * Math.min(1, rev / 2.5));
playSyllable(nextSchedTime, f0, f1, v.fm, v.f1m, dur, peak);
nextSchedTime += interval * (0.75 + Math.random() * 0.5);
schedCount++;
}
}
/* ============================================================
STATE
============================================================ */
const STAGES = [
{ speed: 1.6, lift: 0.30, chaos: 0.00, copies: 0 },
{ speed: 3.4, lift: 0.55, chaos: 0.22, copies: 1 },
{ speed: 8.0, lift: 0.82, chaos: 0.55, copies: 3 },
{ speed: 16, lift: 1.00, chaos: 1.00, copies: 6 }
];
const state = {
stage: 0,
angle: 0,
speed: 0,
targetSpeed: 0,
lift: 0,
targetLift: 0,
chaos: 0,
t: 0,
headTilt: 0,
headTiltTarget: 0
};
const trail = [];
const particles = [];
/* ============================================================
PARTICLES
============================================================ */
function spawnParticles(n, cx, cy) {
for (let i = 0; i < n; i++) {
const a = Math.random() * Math.PI * 2;
const sp = 40 + Math.random() * 320;
particles.push({
x: cx + (Math.random() - 0.5) * 50,
y: cy + (Math.random() - 0.5) * 50,
vx: Math.cos(a) * sp,
vy: Math.sin(a) * sp,
life: 1,
decay: 0.5 + Math.random() * 1.5,
size: 1 + Math.random() * 3,
hue: 25 + Math.random() * 45
});
}
}
function updateParticles(dt) {
for (let i = particles.length - 1; i >= 0; i--) {
const p = particles[i];
p.x += p.vx * dt;
p.y += p.vy * dt;
p.vy += 70 * dt;
p.vx *= (1 - 1.3 * dt);
p.life -= p.decay * dt;
if (p.life <= 0) particles.splice(i, 1);
}
}
function drawParticles() {
if (!particles.length) return;
for (let i = 0; i < particles.length; i++) {
const p = particles[i];
const a = Math.max(0, p.life);
ctx.globalAlpha = a * 0.7;
ctx.fillStyle = 'hsl(' + p.hue + ',90%,66%)';
ctx.beginPath();
ctx.arc(p.x, p.y, p.size * (0.4 + p.life * 0.6), 0, Math.PI * 2);
ctx.fill();
}
ctx.globalAlpha = 1;
}
/* ============================================================
UPDATE
============================================================ */
function update(dt) {
state.t += dt;
if (state.stage > 0) {
const st = STAGES[state.stage - 1];
/* accelerate — the spin winds up */
state.speed += dt * (1.2 + state.stage * 1.6);
state.speed = Math.min(state.speed, st.speed * 1.9);
state.angle += state.speed * dt;
/* rise */
state.lift += (state.targetLift - state.lift) * Math.min(1, dt * 3.5);
/* head settles to face the lens */
state.headTilt += (state.headTiltTarget - state.headTilt) * Math.min(1, dt * 8);
} else {
state.speed *= Math.pow(0.02, dt);
state.angle += state.speed * dt;
state.lift = 0;
}
updateParticles(dt);
}
/* ============================================================
DRAW HELPERS
============================================================ */
function drawCatBuf(cx, cy, s, angle, alpha, blur) {
const c = Math.cos(angle);
ctx.save();
ctx.globalAlpha = alpha;
if (blur > 0.2 && HAS_FILTER) ctx.filter = 'blur(' + blur + 'px)';
ctx.translate(cx, cy);
ctx.scale(c * s, s);
ctx.drawImage(catBuffer, -CATBUF / 2, -CATBUF / 2);
ctx.restore();
}
function catScreenPos() {
const floorY = H * 0.63;
const s = Math.min(W / 720, H / 620);
const liftPx = state.lift * (H * 0.32 + 40);
return {
cx: W / 2,
cy: floorY - 30 - liftPx,
s: s,
floorY: floorY
};
}
/* ============================================================
SCENE DRAW
============================================================ */
function drawRoom() {
const spinAmt = state.stage * state.chaos * 0.9;
const rot = spinAmt * Math.sin(state.t * (0.7 + state.stage * 0.35));
ctx.save();
ctx.translate(W / 2, H * 0.63);
ctx.rotate(rot * 0.12);
ctx.translate(-W / 2, -H * 0.63);
ctx.drawImage(roomCanvas, 0, 0);
ctx.restore();
/* motion smear */
if (state.stage >= 2) {
const n = 8 + state.stage * 5;
ctx.save();
ctx.globalAlpha = 0.016;
for (let i = 0; i < n; i++) {
const f = i / n;
const off = (f - 0.5) * W * (0.25 + state.stage * 0.12);
ctx.drawImage(roomCanvas, off, 0);
}
ctx.restore();
}
/* stage 4 — the room tears into horizontal streaks */
if (state.stage >= 4) {
ctx.save();
ctx.globalAlpha = 0.10;
const strips = 16;
const h = H / strips;
for (let i = 0; i < strips; i++) {
const y = i * h;
const f = i / strips;
const off = Math.sin(state.t * 2.5 + f * 10) * W * 0.10;
ctx.save();
ctx.beginPath();
ctx.rect(0, y, W, h);
ctx.clip();
ctx.drawImage(roomCanvas, off, 0);
ctx.restore();
}
ctx.restore();
}
}
function drawCatShadow(cx, floorY, s) {
const shadowScale = 1 + state.lift * 0.35;
ctx.save();
ctx.globalCompositeOperation = 'multiply';
const sg = ctx.createRadialGradient(cx, floorY + 8, 4, cx, floorY + 8, 95 + s * 62 * shadowScale);
sg.addColorStop(0, 'rgba(58,32,12,0.38)');
sg.addColorStop(1, 'rgba(58,32,12,0)');
ctx.fillStyle = sg;
ctx.beginPath();
ctx.ellipse(cx, floorY + 8, 95 + s * 62 * shadowScale, 24 + s * 13 * shadowScale, 0, 0, Math.PI * 2);
ctx.fill();
ctx.restore();
}
function drawCatScene() {
const pos = catScreenPos();
const cx = pos.cx, cy = pos.cy, s = pos.s, floorY = pos.floorY;
renderCatBuffer(state.headTilt);
/* contact shadow */
drawCatShadow(cx, floorY, s);
/* spin glow */
const glowR = 130 + state.speed * 7 + state.stage * 45;
const gg = ctx.createRadialGradient(cx, cy, 10, cx, cy, glowR);
gg.addColorStop(0, 'rgba(255,222,150,' + (0.09 + state.speed * 0.004) + ')');
gg.addColorStop(1, 'rgba(255,222,150,0)');
ctx.fillStyle = gg;
ctx.beginPath();
ctx.arc(cx, cy, glowR, 0, Math.PI * 2);
ctx.fill();
/* trail */
trail.push({ a: state.angle, y: cy });
if (trail.length > 26) trail.shift();
const blurAmt = Math.min(16, state.speed * 1.1);
for (let i = 0; i < trail.length; i++) {
const p = trail[i];
const f = i / trail.length;
const a = Math.pow(f, 1.6) * 0.30 * Math.min(1, state.speed / 2.5);
if (a < 0.004) continue;
drawCatBuf(cx, p.y, s, p.a, a, Math.min(6, f * 8));
}
/* main cat */
drawCatBuf(cx, cy, s, state.angle, 1, blurAmt);
/* orbiting copies */
const st = state.stage > 0 ? STAGES[state.stage - 1] : null;
const copies = st ? st.copies : 0;
if (copies > 0) {
for (let i = 0; i < copies; i++) {
const off = (i / copies) * Math.PI * 2 + state.t * 1.5;
const r = 95 + i * 58;
const ox = cx + Math.cos(off) * r;
const oy = cy + Math.sin(off) * r * 0.5;
const a = 0.09 + 0.07 * Math.sin(state.t * 2 + i);
drawCatBuf(ox, oy, s * 0.72, state.angle + off * 0.5, Math.max(0.02, a), 3);
}
}
}
/* ============================================================
RENDER
============================================================ */
function render() {
ctx.setTransform(DPR, 0, 0, DPR, 0, 0);
ctx.fillStyle = '#0d0b09';
ctx.fillRect(0, 0, W, H);
const shake = state.stage * state.chaos * 1.7;
const sx = (Math.random() - 0.5) * shake;
const sy = (Math.random() - 0.5) * shake;
ctx.save();
ctx.translate(sx, sy);
drawRoom();
drawCatScene();
drawParticles();
ctx.restore();
/* stage tint */
const tints = [
'rgba(255,236,200,0)',
'rgba(255,214,150,0.05)',
'rgba(255,170,90,0.09)',
'rgba(255,110,60,0.14)',
'rgba(120,20,90,0.16)'
];
if (state.stage > 0) {
const t = tints[state.stage];
if (t) {
ctx.save();
ctx.globalAlpha = 0.55;
ctx.fillStyle = t;
ctx.fillRect(0, 0, W, H);
ctx.restore();
}
}
}
/* ============================================================
RESIZE
============================================================ */
function resize() {
DPR = Math.min(window.devicePixelRatio || 1, 2);
W = window.innerWidth;
H = window.innerHeight;
cvs.width = Math.floor(W * DPR);
cvs.height = Math.floor(H * DPR);
cvs.style.width = W + 'px';
cvs.style.height = H + 'px';
ctx.setTransform(DPR, 0, 0, DPR, 0, 0);
noiseTex = makeNoise(256, 256);
if (!catBuffer) {
catBuffer = document.createElement('canvas');
catBufCtx = catBuffer.getContext('2d');
}
catBuffer.width = CATBUF * DPR;
catBuffer.height = CATBUF * DPR;
buildRoom();
renderCatBuffer(state.headTilt);
}
/* ============================================================
INTERACTION
============================================================ */
function activate() {
if (state.stage === 0) {
state.stage = 1;
state.speed = 0.4;
state.targetLift = STAGES[0].lift;
state.chaos = 0;
state.headTilt = 0.16;
state.headTiltTarget = 0;
hint.style.opacity = 0;
} else {
state.stage = Math.min(4, state.stage + 1);
const st = STAGES[state.stage - 1];
state.speed = st.speed * 0.45;
state.targetLift = st.lift;
state.chaos = st.chaos;
state.headTilt = 0.22;
state.headTiltTarget = 0;
}
const pos = catScreenPos();
spawnParticles(10 + state.stage * 9, pos.cx, pos.cy);
}
cvs.addEventListener('pointerdown', function (e) {
e.preventDefault();
initAudio();
if (audioCtx && audioCtx.state === 'suspended') audioCtx.resume();
activate();
});
muteBtn.addEventListener('click', function () {
muted = !muted;
muteBtn.classList.toggle('on', muted);
muteBtn.textContent = muted ? '🔇' : '🔊';
if (masterGain && audioCtx) {
masterGain.gain.setTargetAtTime(muted ? 0 : 0.9, audioCtx.currentTime, 0.02);
}
});
/* ============================================================
MAIN LOOP
============================================================ */
let last = performance.now();
function frame(now) {
const dt = Math.min((now - last) / 1000, 0.05);
last = now;
update(dt);
render();
requestAnimationFrame(frame);
}
/* ============================================================
GO
============================================================ */
window.addEventListener('resize', resize);
resize();
requestAnimationFrame(frame);
})();
</script>
</body>
</html>
Spin Mechanics & Escalation
Clicking the cat kicks off a four-stage escalation, each with its own speed, lift, and visual chaos.
- Stage 1 – The cat lifts slightly and begins a slow spin, with a soft glow and a gentle head tilt that settles to face you.
- Stage 2 – The spin accelerates, the room starts to smear, and a single orbiting copy appears.
- Stage 3 – The cat rises higher, the room tears into horizontal streaks, and three copies orbit around it.
- Stage 4 – Maximum speed and lift, with six orbiting copies, screen shake, and a strong color tint.
The audio is synthesized in real time using Web Audio, with pitch and rate rising as the spin gets faster. A mute button in the top-right corner lets you silence the sound at any time.
Optimization Tip: You can adjust the spin speed, lift height, and chaos for each stage by editing the STAGES array near the top of the script. The VOW object controls the vowel formants and durations for the "oiia" voice.
Attachments
ricursiveai/ripple-65b-preview — page