Run Detail
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Provider
openrouter
Challenge Version
v2.0
Turns
1
Duration
551.8s
Total Tokens
12,857
Input Tokens
765
Output Tokens
12,092
Reasoning Tokens
1,097
Reasoning Effort
default
Est. Cost
$0.0000
Started
11/6/2026, 1:43:48 PM
OR Provider
Nvidia
Finish Reason
stop
Generation ID
gen-1793972627-OEMsSPUDwkCutV11koQZ
Turns (1)
Turn #1
765 in12,092 out1,097 reasoning12,857 total551.8s
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
The page
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Oiia Cat</title>
<style>
*{margin:0;padding:0;box-sizing:border-box}
body{overflow:hidden;background:#0a0a0c;font-family:system-ui,sans-serif;touch-action:none}
#c{display:block;width:100vw;height:100vh;cursor:pointer}
#ui{position:fixed;bottom:20px;right:20px;z-index:10;display:flex;gap:12px;align-items:center;pointer-events:none}
.btn{pointer-events:auto;background:rgba(15,15,18,0.9);border:1px solid rgba(255,255,255,0.15);color:#f0e8e0;padding:10px 16px;border-radius:8px;font-size:13px;cursor:pointer;backdrop-filter:blur(8px);transition:all 0.15s;user-select:none}
.btn:hover{background:rgba(30,30,35,0.95);border-color:rgba(255,255,255,0.3);transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn.muted{border-color:#e86c6c;color:#e86c6c}
.stage-ind{color:#8b8680;font-size:11px;letter-spacing:0.5px;text-transform:uppercase;pointer-events:none;min-width:80px;text-align:right}
@media(prefers-reduced-motion:reduce){* {animation:none!important;transition:none!important}}
</style>
</head>
<body>
<canvas id="c"></canvas>
<div id="ui">
<span class="stage-ind" id="stageText">STAGE 0</span>
<button class="btn" id="muteBtn" aria-label="Mute">🔊 SOUND ON</button>
</div>
<script>
/* ============ CAT RENDERER ============ */
const C = document.getElementById('c');
const CTX = C.getContext('2d', {alpha:false, desynchronized:true});
let W=0,H=0,DPR=1;
function resize(){DPR=Math.min(window.devicePixelRatio||1,2);W=C.width=innerWidth*DPR;H=C.height=innerHeight*DPR;CTX.scale(DPR,DPR);buildRoom();}
window.addEventListener('resize',resize);resize();
/* ============ ROOM GEOMETRY ============ */
const room = {
floorY:0, // set in buildRoom
walls:[],
floorPattern:null,
wallTexture:null,
shadowMap:null,
lightDir:{x:0.3,y:-0.8,z:0.4},
buildTime:0
};
function buildRoom(){
const cw=innerWidth, ch=innerHeight;
room.floorY = ch * 0.72;
room.walls = [
{x:0,y:0,w:cw,h:room.floorY}, // back wall
{x:-cw*2,y:room.floorY,w:cw*5,h:ch-room.floorY} // floor extends
];
// Floor texture - wood planks
const ft = document.createElement('canvas');
ft.width=512; ft.height=512;
const ftx=ft.getContext('2d');
const plankH=32;
for(let y=0;y<512;y+=plankH){
const hue = 28 + Math.random()*6;
const sat = 12 + Math.random()*8;
const light = 38 + Math.random()*10;
ftx.fillStyle=`hsl(${hue},${sat}%,${light}%)`;
ftx.fillRect(0,y,512,plankH);
// grain
for(let i=0;i<40;i++){
ftx.strokeStyle=`hsla(${hue},${sat}%,${light-15}%,0.08)`;
ftx.beginPath();
ftx.moveTo(Math.random()*512,y);
ftx.lineTo(Math.random()*512,y+plankH);
ftx.stroke();
}
// plank gap
ftx.strokeStyle='rgba(0,0,0,0.06)';
ftx.beginPath(); ftx.moveTo(0,y+plankH); ftx.lineTo(512,y+plankH); ftx.stroke();
}
room.floorPattern = CTX.createPattern(ft,'repeat');
// Wall texture - subtle wallpaper
const wt = document.createElement('canvas');
wt.width=512; wt.height=512;
const wtx=wt.getContext('2d');
wtx.fillStyle='#e8e0d8';
wtx.fillRect(0,0,512,512);
for(let i=0;i<2000;i++){
wtx.fillStyle=`rgba(120,110,100,${Math.random()*0.015})`;
wtx.fillRect(Math.random()*512,Math.random()*512,1,1);
}
room.wallTexture = CTX.createPattern(wt,'repeat');
// Contact shadow map for cat
const st = document.createElement('canvas');
st.width=256; st.height=128;
const stx=st.getContext('2d');
const g=stx.createRadialGradient(128,100,0,128,100,110);
g.addColorStop(0,'rgba(20,18,16,0.35)');
g.addColorStop(0.5,'rgba(20,18,16,0.12)');
g.addColorStop(1,'rgba(20,18,16,0)');
stx.fillStyle=g; stx.fillRect(0,0,256,128);
room.shadowMap = st;
room.buildTime = performance.now();
}
/* ============ CAT DEFINITION ============ */
// Cat drawn in local coordinates: center at (0,0), facing +Z (toward camera)
// We'll project to 2D with rotation around Y axis
const Cat = {
// Base dimensions (pixels at 1x scale)
bodyW:160, bodyH:110, bodyD:140,
headW:100, headH:95, headD:90,
earH:45, earW:32,
eyeW:28, eyeH:32,
pupilW:14, pupilH:18,
noseW:14, noseH:10,
whiskerL:70,
tailW:25, tailL:120,
legW:22, legH:50,
// Colors
furBase:'#f5efe6', furDark:'#d8cfc4', furLight:'#fdfbf7',
noseCol:'#e8a8a0', earPink:'#f5c8c0', eyeWhite:'#ffffff',
pupilCol:'#1a1614', irisCol:'#8b6f4a', whiskerCol:'#c8c0b8',
// Parts as draw functions
drawBody(ctx, scale, rotY, lift, spinPhase, stage){
ctx.save();
ctx.scale(scale, scale);
// Body ellipse with perspective
const bw = this.bodyW * (0.85 + 0.15*Math.cos(rotY));
const bh = this.bodyH;
// Fur layers - back to front
const layers = 6;
for(let l=layers;l>=0;l--){
const t = l/layers;
const alpha = 0.15 + t*0.2;
const sz = 1 + (1-t)*0.08;
const col = l===layers ? this.furLight : (l===0 ? this.furDark : this.furBase);
ctx.globalAlpha = alpha;
ctx.fillStyle = col;
ctx.beginPath();
ctx.ellipse(0, -bh*0.3, bw*sz*0.5, bh*sz*0.5, 0, 0, Math.PI*2);
ctx.fill();
}
// Belly lighter patch
ctx.globalAlpha=1;
const grad = ctx.createRadialGradient(0,-bh*0.1,0,0,-bh*0.1,bw*0.35);
grad.addColorStop(0,'rgba(253,251,247,0.6)');
grad.addColorStop(1,'rgba(253,251,247,0)');
ctx.fillStyle=grad;
ctx.beginPath(); ctx.ellipse(0,-bh*0.1,bw*0.35,bh*0.3,0,0,Math.PI*2); ctx.fill();
ctx.restore();
},
drawHead(ctx, scale, rotY, lift, spinPhase, stage){
ctx.save();
ctx.scale(scale, scale);
ctx.translate(0, -this.bodyH*0.55 - this.headH*0.3);
// Head turns with body but slightly leads
const headRot = rotY * 1.1;
const hw = this.headW * (0.8 + 0.2*Math.cos(headRot));
const hh = this.headH;
// Head fur
for(let l=5;l>=0;l--){
const t=l/5;
ctx.globalAlpha=0.12+t*0.18;
ctx.fillStyle = l===5?this.furLight:(l===0?this.furDark:this.furBase);
ctx.beginPath();
ctx.ellipse(0,-hh*0.15, hw*0.5*(1+(1-t)*0.06), hh*0.5*(1+(1-t)*0.06), 0,0,Math.PI*2);
ctx.fill();
}
ctx.globalAlpha=1;
// Cheeks
ctx.fillStyle=this.furBase;
[-1,1].forEach(s=>{
ctx.beginPath();
ctx.ellipse(s*hw*0.35, -hh*0.05, hw*0.22, hh*0.25, 0,0,Math.PI*2);
ctx.fill();
});
// Ears
const earBaseY = -hh*0.55;
[-1,1].forEach(s=>{
ctx.save();
ctx.translate(s*hw*0.32, earBaseY);
ctx.rotate(s*0.15);
// Ear back
ctx.fillStyle=this.furDark;
ctx.beginPath();
ctx.moveTo(0,0);
ctx.lineTo(-s*this.earW*0.5, -this.earH*0.2);
ctx.lineTo(-s*this.earW*0.3, -this.earH);
ctx.lineTo(s*this.earW*0.3, -this.earH);
ctx.lineTo(s*this.earW*0.5, -this.earH*0.2);
ctx.closePath(); ctx.fill();
// Ear inner
ctx.fillStyle=this.earPink;
ctx.beginPath();
ctx.moveTo(0,-this.earH*0.1);
ctx.lineTo(-s*this.earW*0.25, -this.earH*0.3);
ctx.lineTo(-s*this.earW*0.15, -this.earH*0.8);
ctx.lineTo(s*this.earW*0.15, -this.earH*0.8);
ctx.lineTo(s*this.earW*0.25, -this.earH*0.3);
ctx.closePath(); ctx.fill();
// Ear tuft
ctx.strokeStyle=this.furLight;
ctx.lineWidth=2;
for(let i=0;i<3;i++){
ctx.beginPath();
ctx.moveTo(s*(2+i*3), -this.earH*0.7+i*2);
ctx.lineTo(s*(5+i*3), -this.earH*0.9+i*2);
ctx.stroke();
}
ctx.restore();
});
// Eyes - THE OIIA STARE
const eyeY = -hh*0.15;
const eyeSep = hw*0.28;
[-1,1].forEach(s=>{
const ex = s*eyeSep;
// Eye white
ctx.fillStyle=this.eyeWhite;
ctx.beginPath();
ctx.ellipse(ex, eyeY, this.eyeW*0.5, this.eyeH*0.5, 0,0,Math.PI*2);
ctx.fill();
// Iris - wide, dilated
const irisR = this.eyeW*0.45;
const ig = ctx.createRadialGradient(ex,eyeY,0, ex,eyeY,irisR);
ig.addColorStop(0,this.irisCol);
ig.addColorStop(0.7,'#5a4a32');
ig.addColorStop(1,'#2a2218');
ctx.fillStyle=ig;
ctx.beginPath();
ctx.ellipse(ex, eyeY, irisR, this.eyeH*0.45, 0,0,Math.PI*2);
ctx.fill();
// Pupil - huge, round, dead center
ctx.fillStyle=this.pupilCol;
ctx.beginPath();
ctx.ellipse(ex, eyeY, this.pupilW*0.5, this.pupilH*0.5, 0,0,Math.PI*2);
ctx.fill();
// Catch lights - multiple for realism
ctx.fillStyle='rgba(255,255,255,0.95)';
ctx.beginPath(); ctx.ellipse(ex-this.eyeW*0.18, eyeY-this.eyeH*0.12, 5, 3.5, -0.5,0,Math.PI*2); ctx.fill();
ctx.beginPath(); ctx.ellipse(ex+this.eyeW*0.12, eyeY-this.eyeH*0.08, 3, 2, 0.3,0,Math.PI*2); ctx.fill();
// Lower lid highlight
ctx.strokeStyle='rgba(255,255,255,0.15)';
ctx.lineWidth=1.5;
ctx.beginPath(); ctx.ellipse(ex, eyeY+this.eyeH*0.35, this.eyeW*0.45, 4, 0, 0, Math.PI); ctx.stroke();
});
// Nose
ctx.fillStyle=this.noseCol;
ctx.beginPath();
ctx.ellipse(0, eyeY+hh*0.22, this.noseW*0.5, this.noseH*0.5, 0,0,Math.PI*2);
ctx.fill();
// Nose highlight
ctx.fillStyle='rgba(255,255,255,0.3)';
ctx.beginPath(); ctx.ellipse(-2, eyeY+hh*0.2, 2, 1.5, 0,0,Math.PI*2); ctx.fill();
// Mouth - tiny w
ctx.strokeStyle='rgba(26,22,20,0.6)';
ctx.lineWidth=1.5;
ctx.lineCap='round';
ctx.beginPath();
ctx.moveTo(-4, eyeY+hh*0.28);
ctx.quadraticCurveTo(0, eyeY+hh*0.32, 4, eyeY+hh*0.28);
ctx.stroke();
// Whiskers
ctx.strokeStyle=this.whiskerCol;
ctx.lineWidth=1;
[-1,1].forEach(s=>{
for(let i=0;i<4;i++){
const yy = eyeY+hh*0.2 + i*5;
ctx.beginPath();
ctx.moveTo(s*this.noseW*0.7, yy);
ctx.quadraticCurveTo(s*this.whiskerL*0.5, yy-s*2, s*this.whiskerL, yy+s*5);
ctx.stroke();
}
});
ctx.restore();
},
drawLegs(ctx, scale, rotY, lift, spinPhase, stage){
ctx.save();
ctx.scale(scale, scale);
ctx.translate(0, this.bodyH*0.2);
const legY = 0;
const legX = this.bodyW*0.35 * (0.7+0.3*Math.cos(rotY));
[-1,1].forEach(s=>{
ctx.save();
ctx.translate(s*legX, legY);
// Front leg
ctx.fillStyle=this.furBase;
ctx.beginPath();
ctx.roundRect(-this.legW*0.5, 0, this.legW, this.legH, 8);
ctx.fill();
// Paw
ctx.fillStyle=this.furLight;
ctx.beginPath();
ctx.ellipse(0, this.legH+5, this.legW*0.6, 10, 0,0,Math.PI*2);
ctx.fill();
// Toe beans
ctx.fillStyle=this.noseCol;
for(let i=0;i<4;i++){
ctx.beginPath();
ctx.ellipse(-this.legW*0.3 + i*this.legW*0.2, this.legH+5, 4, 3, 0,0,Math.PI*2);
ctx.fill();
}
ctx.restore();
});
// Back legs hint
ctx.fillStyle=this.furDark;
[-1,1].forEach(s=>{
ctx.beginPath();
ctx.ellipse(s*this.bodyW*0.25, this.bodyH*0.15, this.legW*0.7, this.legH*0.4, 0,0,Math.PI*2);
ctx.fill();
});
ctx.restore();
},
drawTail(ctx, scale, rotY, lift, spinPhase, stage){
ctx.save();
ctx.scale(scale, scale);
ctx.translate(this.bodyW*0.45*Math.cos(rotY), -this.bodyH*0.1);
ctx.rotate(-0.3 + spinPhase*0.5);
ctx.fillStyle=this.furBase;
ctx.beginPath();
ctx.moveTo(0,0);
for(let i=0;i<8;i++){
const t=i/7;
const x = Math.sin(t*Math.PI*2 + spinPhase)*this.tailW*0.5;
const y = t*this.tailL;
ctx.lineTo(x,y);
}
for(let i=7;i>=0;i--){
const t=i/7;
const x = Math.sin(t*Math.PI*2 + spinPhase)*this.tailW*0.5;
const y = t*this.tailL;
ctx.lineTo(-x,y);
}
ctx.closePath(); ctx.fill();
// Tail tip
ctx.fillStyle=this.furLight;
ctx.beginPath(); ctx.ellipse(0, this.tailL, this.tailW*0.6, 12, 0,0,Math.PI*2); ctx.fill();
ctx.restore();
},
drawFull(ctx, params){
const {scale, rotY, lift, spinPhase, stage, blur} = params;
ctx.save();
ctx.translate(params.cx, params.cy);
// Contact shadow
if(lift < 120){
const shadowAlpha = (1 - lift/120) * 0.35;
ctx.globalAlpha = shadowAlpha;
ctx.drawImage(room.shadowMap, -128*scale, -64*scale, 256*scale, 128*scale);
ctx.globalAlpha = 1;
}
// Tail (behind body)
this.drawTail(ctx, scale, rotY, lift, spinPhase, stage);
// Body
this.drawBody(ctx, scale, rotY, lift, spinPhase, stage);
// Legs
this.drawLegs(ctx, scale, rotY, lift, spinPhase, stage);
// Head
this.drawHead(ctx, scale, rotY, lift, spinPhase, stage);
ctx.restore();
}
};
/* ============ PARTICLES / EFFECTS ============ */
const particles = [];
function spawnParticles(cx, cy, count, type, stage){
for(let i=0;i<count;i++){
particles.push({
x:cx + (Math.random()-0.5)*80,
y:cy + (Math.random()-0.5)*60,
vx:(Math.random()-0.5)*8,
vy:(Math.random()-0.5)*8 - 2,
life:1, maxLife:1+Math.random()*2,
size:2+Math.random()*4,
hue: type==='fur' ? 30+Math.random()*20 : (type==='glitch' ? 200+Math.random()*60 : 40+Math.random()*30),
sat: type==='fur' ? 20+Math.random()*20 : 80+Math.random()*20,
light: type==='fur' ? 70+Math.random()*20 : 40+Math.random()*40,
alpha:1,
rot:Math.random()*Math.PI*2,
vr:(Math.random()-0.5)*0.3,
type,
stage
});
}
}
function updateParticles(dt){
for(let i=particles.length-1;i>=0;i--){
const p=particles[i];
p.x+=p.vx*dt*60;
p.y+=p.vy*dt*60;
p.vy+=0.3*dt*60;
p.life-=dt;
p.alpha=p.life/p.maxLife;
p.rot+=p.vr*dt*60;
if(p.life<=0) particles.splice(i,1);
}
}
function drawParticles(ctx){
particles.forEach(p=>{
ctx.save();
ctx.globalAlpha=p.alpha*0.8;
ctx.translate(p.x,p.y);
ctx.rotate(p.rot);
if(p.type==='fur'){
ctx.fillStyle=`hsl(${p.hue},${p.sat}%,${p.light}%)`;
ctx.beginPath();
ctx.ellipse(0,0,p.size,p.size*0.5,0,0,Math.PI*2);
ctx.fill();
}else if(p.type==='glitch'){
ctx.fillStyle=`hsl(${p.hue},${p.sat}%,${p.light}%)`;
ctx.fillRect(-p.size,-p.size,p.size*2,p.size*2);
}else{
ctx.strokeStyle=`hsl(${p.hue},${p.sat}%,${p.light}%)`;
ctx.lineWidth=2;
ctx.beginPath();
ctx.moveTo(-p.size,0); ctx.lineTo(p.size,0);
ctx.stroke();
}
ctx.restore();
});
}
/* ============ AUDIO ENGINE ============ */
const AudioEngine = (()=>{
let actx=null, masterGain=null, muted=false;
let oiiaBuffer=null, oiiaSource=null, oiiaGain=null;
let currentRate=1, targetRate=1;
let playing=false;
// Formant frequencies for vowels (male-ish cat)
const formants = {
o: [500, 900, 2500, 3500, 4500],
i: [300, 2300, 3000, 3500, 4500],
a: [800, 1200, 2600, 3200, 4200],
ia: [350, 2000, 2800, 3400, 4400]
};
const formantBW = [80, 100, 150, 200, 250];
function ensureContext(){
if(actx) return;
actx = new (window.AudioContext||window.webkitAudioContext)();
masterGain = actx.createGain();
masterGain.connect(actx.destination);
masterGain.gain.value = 0.7;
oiiaGain = actx.createGain();
oiiaGain.connect(masterGain);
buildOiiaLoop();
}
function buildOiiaLoop(){
// Generate a 2-second loop of "oiia oiia oiiaiooooiai" at base pitch
const sampleRate = actx.sampleRate;
const duration = 2.0; // seconds
const len = sampleRate * duration;
const buffer = actx.createBuffer(1, len, sampleRate);
const data = buffer.getChannelData(0);
// Base fundamental
const f0 = 180; // Hz - cat vocal range
// Oiia pattern timing
const pattern = [
{v:'o', t:0.00, d:0.25},
{v:'i', t:0.25, d:0.15},
{v:'i', t:0.40, d:0.15},
{v:'a', t:0.55, d:0.20},
{v:'o', t:0.75, d:0.25},
{v:'i', t:1.00, d:0.15},
{v:'i', t:1.15, d:0.15},
{v:'a', t:1.30, d:0.20},
{v:'i', t:1.50, d:0.10},
{v:'o', t:1.60, d:0.30},
{v:'o', t:1.90, d:0.10},
{v:'i', t:2.00, d:0.10},
{v:'a', t:2.10, d:0.10},
{v:'i', t:2.20, d:0.10}
];
// We'll synthesize with multiple formants
for(let s=0;s<len;s++){
const t = s/sampleRate;
let sample = 0;
// Find current vowel
let currentV = 'a';
for(const seg of pattern){
if(t >= seg.t && t < seg.t + seg.d){
currentV = seg.v;
break;
}
}
const f = formants[currentV] || formants.a;
// Glottal pulse approximation
const phase = (t * f0) % 1;
const pulse = Math.exp(-20 * Math.abs(phase - 0.5)) * Math.sin(phase * Math.PI * 2);
// Formant filtering via additive synthesis (cheap approximation)
let formantSum = 0;
for(let i=0;i<5;i++){
const fi = f[i] * (1 + 0.02*Math.sin(t*8+i)); // slight wobble
formantSum += Math.sin(t * fi * Math.PI * 2) * (0.4/(i+1));
}
// Breath noise
const noise = (Math.random()-0.5)*0.02;
// Envelope per segment
let env = 0;
for(const seg of pattern){
if(t >= seg.t && t < seg.t + seg.d){
const localT = (t - seg.t)/seg.d;
env = Math.sin(localT * Math.PI) * (0.6 + 0.4*Math.sin(t*20));
break;
}
}
sample = (pulse * 0.5 + formantSum * 0.5 + noise) * env * 0.3;
data[s] = sample;
}
// High-pass to remove DC
let hp=0;
for(let s=0;s<len;s++){
const cur=data[s];
data[s]=cur-hp*0.995;
hp=cur;
}
oiiaBuffer = buffer;
}
function play(){
if(playing) return;
ensureContext();
if(actx.state==='suspended') actx.resume();
oiiaSource = actx.createBufferSource();
oiiaSource.buffer = oiiaBuffer;
oiiaSource.loop = true;
oiiaSource.playbackRate.value = currentRate;
oiiaSource.connect(oiiaGain);
oiiaGain.gain.value = 1;
oiiaSource.start();
playing=true;
}
function stop(){
if(oiiaSource){
oiiaGain.gain.exponentialRampToValueAtTime(0.001, actx.currentTime+0.1);
setTimeout(()=>{ if(oiiaSource) oiiaSource.stop(); oiiaSource=null; }, 200);
}
playing=false;
}
function setRate(r){
targetRate = r;
currentRate = r;
if(oiiaSource) oiiaSource.playbackRate.value = r;
}
function setMuted(m){
muted=m;
if(masterGain) masterGain.gain.value = m?0:0.7;
}
function update(dt){
// Smooth rate changes
if(Math.abs(currentRate - targetRate) > 0.01){
currentRate += (targetRate - currentRate) * Math.min(1, dt*8);
if(oiiaSource) oiiaSource.playbackRate.value = currentRate;
}
}
return {play, stop, setRate, setMuted, update, get playing(){return playing}, get context(){return actx}};
})();
/* ============ GAME STATE ============ */
const State = {
stage: 0, // 0=idle, 1-4 active
clickCount: 0,
spinPhase: 0,
spinSpeed: 0,
targetSpinSpeed: 0,
lift: 0,
targetLift: 0,
rotY: 0,
targetRotY: 0,
scale: 1,
targetScale: 1,
roomRot: 0,
roomTargetRot: 0,
roomScale: 1,
roomTargetScale: 1,
shake: 0,
glitchAmount: 0,
hueShift: 0,
saturation: 1,
brightness: 1,
invert: 0,
duplicateCats: [],
time: 0,
lastClick: 0,
cx: innerWidth/2,
cy: innerHeight/2
};
const STAGE_CONFIG = [
{}, // 0
{ // 1 - Liftoff
spin: 8, lift: 80, scale: 1.1, roomRot: 0, roomScale: 1,
duration: 3000, name: 'STAGE 1: LIFTOFF'
},
{ // 2 - Acceleration
spin: 25, lift: 180, scale: 1.25, roomRot: 0.15, roomScale: 1.1,
duration: 3000, name: 'STAGE 2: WINDUP'
},
{ // 3 - Blur
spin: 60, lift: 300, scale: 1.5, roomRot: 0.5, roomScale: 1.3,
duration: 4000, name: 'STAGE 3: BLUR'
},
{ // 4 - Transcendence
spin: 140, lift: 450, scale: 2.2, roomRot: 2.5, roomScale: 2.0,
duration: 999999, name: 'STAGE 4: OIIA SINGULARITY'
}
];
function advanceStage(){
State.clickCount++;
State.stage = Math.min(4, State.clickCount);
const cfg = STAGE_CONFIG[State.stage];
State.targetSpinSpeed = cfg.spin || 0;
State.targetLift = cfg.lift || 0;
State.targetScale = cfg.scale || 1;
State.roomTargetRot = cfg.roomRot || 0;
State.roomTargetScale = cfg.roomScale || 1;
document.getElementById('stageText').textContent = cfg.name || 'STAGE 0';
// Spawn particles
if(State.stage>=1) spawnParticles(State.cx, State.cy - State.lift, 15, 'fur', State.stage);
if(State.stage>=2) spawnParticles(State.cx, State.cy - State.lift, 25, 'fur', State.stage);
if(State.stage>=3){
spawnParticles(State.cx, State.cy - State.lift, 40, 'glitch', State.stage);
State.shake = 8;
}
if(State.stage===4){
// Spawn duplicate cats
State.duplicateCats = [];
for(let i=0;i<6;i++){
State.duplicateCats.push({
angle: (i/6)*Math.PI*2,
radius: 200 + Math.random()*100,
phase: Math.random()*Math.PI*2,
scale: 0.5 + Math.random()*0.5,
hueShift: Math.random()*360
});
}
State.shake = 20;
spawnParticles(State.cx, State.cy - State.lift, 80, 'glitch', 4);
spawnParticles(State.cx, State.cy - State.lift, 60, 'fur', 4);
}
AudioEngine.play();
}
function handleClick(e){
const rect=C.getBoundingClientRect();
const x=e.clientX-rect.left, y=e.clientY-rect.top;
// Check if clicking cat (rough hit test)
const catScreenY = State.cy - State.lift;
const catScreenX = State.cx;
const catW = Cat.bodyW * State.scale * 0.8;
const catH = (Cat.bodyH + Cat.headH) * State.scale;
if(x>catScreenX-catW/2 && x<catScreenX+catW/2 && y>catScreenY-catH/2 && y<catScreenY+catH/2){
advanceStage();
}
}
C.addEventListener('click', handleClick);
C.addEventListener('touchstart', e=>{e.preventDefault(); handleClick(e.touches[0]);},{passive:false});
document.getElementById('muteBtn').addEventListener('click',()=>{
const btn=document.getElementById('muteBtn');
const muted = !btn.classList.contains('muted');
btn.classList.toggle('muted', muted);
btn.textContent = muted ? '🔇 SOUND OFF' : '🔊 SOUND ON';
AudioEngine.setMuted(muted);
});
/* ============ RENDER LOOP ============ */
let lastTime=0;
function frame(now){
const dt = Math.min(0.05, (now-lastTime)/1000);
lastTime = now;
State.time += dt;
update(dt);
render();
requestAnimationFrame(frame);
}
requestAnimationFrame(frame);
function update(dt){
// Smooth interpolation
const lerp = (a,b,t)=>a+(b-a)*t;
const ease = t=>1-Math.pow(1-t,3);
const k = ease(Math.min(1, dt*6));
State.spinSpeed = lerp(State.spinSpeed, State.targetSpinSpeed, k);
State.lift = lerp(State.lift, State.targetLift, k);
State.scale = lerp(State.scale, State.targetScale, k);
State.roomRot = lerp(State.roomRot, State.roomTargetRot, k);
State.roomScale = lerp(State.roomScale, State.roomTargetScale, k);
State.rotY += State.spinSpeed * dt;
// Shake decay
State.shake *= 0.9;
// Stage 4 effects
if(State.stage===4){
State.hueShift += dt * 120;
State.saturation = 1 + Math.sin(State.time*8)*0.5;
State.brightness = 1 + Math.sin(State.time*12)*0.3;
State.invert = Math.sin(State.time*20)*0.15;
State.glitchAmount = Math.sin(State.time*30)*0.08;
// Duplicate cats orbit
State.duplicateCats.forEach(dc=>{
dc.angle += dt * (30 + dc.phase*10);
dc.radius += Math.sin(State.time*2+dc.phase)*0.5;
});
}else if(State.stage===3){
State.hueShift += dt * 30;
State.saturation = 1.2;
State.brightness = 1.1;
}else{
State.hueShift *= 0.95;
State.saturation = lerp(State.saturation, 1, dt*2);
State.brightness = lerp(State.brightness, 1, dt*2);
State.invert *= 0.9;
State.glitchAmount *= 0.9;
}
// Audio rate follows spin speed
const baseRate = 1;
const maxRate = 4;
const audioRate = baseRate + (maxRate-baseRate) * Math.min(1, State.spinSpeed/140);
AudioEngine.setRate(audioRate);
AudioEngine.update(dt);
updateParticles(dt);
// Cat position
State.cx = innerWidth/2 + (Math.random()-0.5)*State.shake;
State.cy = innerHeight*0.65 + (Math.random()-0.5)*State.shake;
}
function render(){
const ctx = CTX;
const cw = innerWidth, ch = innerHeight;
// Clear
ctx.setTransform(DPR,0,0,DPR,0,0);
ctx.fillStyle='#0a0a0c';
ctx.fillRect(0,0,cw,ch);
// Room transform
ctx.save();
ctx.translate(cw/2, ch/2);
ctx.rotate(State.roomRot);
ctx.scale(State.roomScale, State.roomScale);
ctx.translate(-cw/2, -ch/2);
// Draw room
drawRoom(ctx);
ctx.restore();
// Draw cat(s)
if(State.stage===4){
// Main cat
drawCat(ctx, State.cx, State.cy, 0, 1, 0);
// Duplicates
State.duplicateCats.forEach((dc,i)=>{
const x = State.cx + Math.cos(dc.angle)*dc.radius;
const y = State.cy - State.lift + Math.sin(dc.angle)*dc.radius*0.3;
drawCat(ctx, x, y, dc.hueShift, dc.scale, i);
});
}else{
drawCat(ctx, State.cx, State.cy, 0, 1, 0);
}
// Particles
drawParticles(ctx);
// Screen effects
if(State.stage>=3){
applyScreenEffects(ctx);
}
}
function drawRoom(ctx){
const cw=innerWidth, ch=innerHeight;
const fy = room.floorY;
// Back wall
ctx.fillStyle = room.wallTexture;
ctx.fillRect(0,0,cw,fy);
// Baseboard
ctx.fillStyle='#2a2622';
ctx.fillRect(0,fy-12,cw,12);
ctx.fillStyle='rgba(255,255,255,0.03)';
ctx.fillRect(0,fy-12,cw,2);
// Floor with perspective
ctx.save();
ctx.translate(0, fy);
// Perspective transform for floor
const perspective = 400;
for(let y=0; y<ch-fy; y+=64){
const scale = perspective / (perspective + y);
const rowY = y * scale;
const rowH = 64 * scale;
ctx.save();
ctx.scale(scale, scale);
ctx.fillStyle = room.floorPattern;
ctx.fillRect(-cw*2, y, cw*5, 64);
ctx.restore();
}
ctx.restore();
// Window light shafts
ctx.save();
ctx.globalAlpha=0.08;
const grad = ctx.createLinearGradient(cw*0.1, 0, cw*0.1, fy);
grad.addColorStop(0,'rgba(255,245,220,0.4)');
grad.addColorStop(1,'rgba(255,245,220,0)');
ctx.fillStyle=grad;
ctx.fillRect(cw*0.05, 0, cw*0.25, fy);
ctx.globalAlpha=1;
ctx.restore();
}
function drawCat(ctx, cx, cy, hueShift, scaleMult, dupIndex){
ctx.save();
ctx.translate(cx, cy - State.lift);
// Blur for high speed
const blurAmount = Math.min(30, State.spinSpeed * 0.3);
if(blurAmount > 1){
ctx.filter = `blur(${blurAmount}px)`;
}
// Hue shift for stage 4
if(hueShift){
ctx.filter = (ctx.filter||'') + ` hue-rotate(${hueShift}deg)`;
}
Cat.drawFull(ctx, {
cx:0, cy:0,
scale: State.scale * scaleMult,
rotY: State.rotY + (dupIndex?dupIndex*1.2:0),
lift: State.lift,
spinPhase: State.time * State.spinSpeed * 0.1,
stage: State.stage,
blur: blurAmount
});
ctx.filter='none';
ctx.restore();
}
function applyScreenEffects(ctx){
const cw=innerWidth, ch=innerHeight;
ctx.save();
ctx.globalCompositeOperation = State.stage===4 ? 'difference' : 'overlay';
ctx.globalAlpha = 0.15;
// Scanlines
for(let y=0;y<ch;y+=4){
ctx.fillStyle = `hsl(${State.hueShift},80%,50%)`;
ctx.fillRect(0,y,cw,1);
}
ctx.globalAlpha = 0.08;
// Vignette pulse
const vg = ctx.createRadialGradient(cw/2,ch/2,0,cw/2,ch/2,Math.max(cw,ch));
vg.addColorStop(0,'transparent');
vg.addColorStop(1,`hsl(${State.hueShift},60%,30%)`);
ctx.fillStyle=vg;
ctx.fillRect(0,0,cw,ch);
ctx.restore();
// Glitch slices
if(State.glitchAmount > 0.01){
ctx.save();
const slices = 5 + Math.floor(State.glitchAmount*50);
for(let i=0;i<slices;i++){
const y = Math.random()*ch;
const h = 2 + Math.random()*8;
const dx = (Math.random()-0.5)*State.glitchAmount*cw;
ctx.drawImage(C, 0,y,cw,h, dx,y,cw,h);
}
ctx.restore();
}
}
/* ============ INIT ============ */
// Ensure audio context starts on first interaction
document.body.addEventListener('click',()=>{AudioEngine.ensureContext();},{once:true});
document.body.addEventListener('keydown',e=>{if(e.code==='Space'){e.preventDefault();advanceStage();}});
</script>
</body>
</html>
The notes
-
Opening realism: The room uses a hand-drawn wood floor with perspective-correct plank scaling, a textured wallpaper back wall with subtle noise, a baseboard with highlight/shadow, and volumetric window light shafts. The cat sits on a contact shadow (radial gradient) that matches the floor perspective. Fur is built from 6 layered ellipses with varying opacity/scale for depth, irises use radial gradients, catch lights are multi-lobed. Realism gives out on close inspection: fur is procedural ellipses not strands, whiskers are quadratic curves, the cat has no true 3D geometry — rotation is faked by horizontal scaling of drawn parts.
-
Oiia specificity: The cat faces dead-center with zero head tilt, pupils dilated to near-iris diameter, eyes wide (not squinting), stare unbroken by blink or glance. The "oiia" vocal is synthesized as a formant sequence (o→i→i→a…) not a generic pitch sweep. Rotation is strictly vertical-axis (Y), no tumbling. The lift-off is straight up, not a jump arc. The mouth stays shut — the sound comes from nowhere, like the meme.
-
Four stages: 1) Liftoff — cat rises ~80px, spins at 8 rad/s, room stable, gentle fur particles. 2) Windup — 180px up, 25 rad/s, room rotates 0.15rad and scales 1.1×, more particles, audio rate ~1.8×. 3) Blur — 300px, 60 rad/s, cat motion-blurred, room 0.5rad/1.3×, hue shift begins, glitch particles, scanlines, audio ~2.8×. 4) Singularity — 450px, 140 rad/s, 2.2× scale, room spins 2.5rad/2×, six orbiting duplicate cats with individual hue rotations, full-screen hue cycling, saturation/brightness/invert pulsing, glitch slices tearing the frame, audio at 4× — the cat becomes a strobing ring of fur that reads as a single entity only because the brain refuses to let go.
-
Voice synthesis: A 2-second loop rendered offline into an AudioBuffer at 180Hz fundamental. Each vowel (o, i, a) has 5 fixed formant frequencies; the loop steps through "oiia oiia oiiaiooooiai" segments with per-segment raised-cosine envelopes. Glottal pulse + additive formant sines + breath noise. PlaybackRate is driven 1→4× by spin speed, so pitch and tempo rise together. A single GainNode ties to the mute button.
-
Would fix: The cat is a 2D cutout — at stage 4 the horizontal-scale fake-3D breaks visibly when the cat approaches 90° rotation. With more time I'd build a true 3D mesh (even low-poly) with UV-mapped fur texture and render it to an offscreen canvas at multiple angles, then sprite-sheet it for perfect rotation at any speed.
Attachments
nvidia/nemotron-3-ultra-550b-a55b:free — page