Models 44

GPT-6.1 Sol

by OpenAIreasoning defaultClean
Open in new window

Running live in a sandboxed frame. Click inside it before using the keyboard.

How it went

Total time
1 min 57 s
Cost
$0.075
Output tokens
7,376
Spent thinking
1,034 tokens
Speed
69 tok/s
Console errors
0
First token after
9.7 s
First visible text after
39.0 s
Prompt tokens
423
Code size
18.5 KB
Finish reason
stop
Served by
OpenAI
Model id
openai/gpt-6.1-sol
Reasoning sent
model default
Max output
128,000 tokens
Generated
Nov 12, 2026

What it was asked

The prompt
“a 3D aquarium with Three.js where the fish swim away when I move the mouse near them (Load Three.js only through this import map: <script type="importmap">{"imports":{"three":"https://cdn.jsdelivr.net/npm/three@0.170.0/build/three.module.js","three/addons/":"https://cdn.jsdelivr.net/npm/three@0.170.0/examples/jsm/"}}</script>)”
System prompt, sent with every prompt
You are generating a self-contained web demo. It will be rendered automatically in a sandboxed iframe and compared side by side with the output of other AI models given the exact same task.

Output rules:
- Reply with exactly ONE fenced code block containing the complete file: ```html (or ```svg when the task asks for an SVG). No text before or after the code block.
- Everything must be inline: CSS in <style>, JavaScript in <script>. No external files, images, fonts or network requests, except the CDN URLs explicitly allowed by the task.
- Do not use localStorage, sessionStorage, cookies, IndexedDB, alert(), confirm(), prompt() or window.open(): they are blocked in the sandbox and will throw.
- The page must look right in a 1280×800 viewport and adapt gracefully down to 375px wide. No horizontal scrollbar.
- Something meaningful must be visible on first paint: a screenshot is taken automatically about 3 seconds after load, without any interaction.
- Everything that makes the demo interesting must be visible within the first seconds: nothing hidden behind a high score, a later level or a long play session.
- Games must start in a self-playing demo mode (a simple AI plays) behind a "Click or press a key to start" message, so the game can be judged in action without playing.
- The iframe only receives keyboard events after the user clicks it: if the demo uses the keyboard, display a clear "Click or press a key to start" message.
- The code must run with zero errors in the console of the latest Chrome.

Code run-1.html · 183 lines

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>Pelagic — A living little world</title>
<script type="importmap">{"imports":{"three":"https://cdn.jsdelivr.net/npm/three@0.170.0/build/three.module.js","three/addons/":"https://cdn.jsdelivr.net/npm/three@0.170.0/examples/jsm/"}}</script>
<style>
*{box-sizing:border-box}body{margin:0;overflow:hidden;background:#061b25;color:#edf8ed;font-family:Arial,Helvetica,sans-serif}canvas{display:block;width:100%;height:100%;touch-action:none}#world{position:fixed;inset:0;background:radial-gradient(ellipse at 50% 42%,#123a46 0,#081f2a 54%,#04141e 100%)}header{position:absolute;top:31px;left:40px;right:40px;display:flex;align-items:center;justify-content:space-between;pointer-events:none}.brand{display:flex;gap:12px;align-items:center;font-size:17px;letter-spacing:5px;font-weight:600}.brand svg{width:31px;height:31px}.live{font-size:10px;letter-spacing:2px;color:#a0b9bd;display:flex;align-items:center;gap:10px}.dot{height:6px;width:6px;background:#b8e8b6;border-radius:50%;box-shadow:0 0 12px #b8e8b655}.intro{position:absolute;left:42px;top:104px;pointer-events:none}.eyebrow{font-size:9px;color:#9dbdc1;letter-spacing:3px;margin:0 0 12px}.intro h1{font-family:Georgia,'Times New Roman',serif;font-weight:400;font-size:39px;letter-spacing:-1.3px;margin:0}.intro p{font-size:12px;color:#9db3b9;line-height:1.6;margin-top:12px}.coordinates{position:absolute;right:42px;top:113px;text-align:right;color:#7b9da6;font-size:9px;letter-spacing:1.7px;line-height:2.1}.coordinates strong{color:#d8e7df;font-size:12px;font-weight:400}.bottom{position:absolute;bottom:31px;left:40px;right:40px;display:flex;justify-content:space-between;align-items:end;gap:20px}.statrow{display:flex;gap:30px}.stat label{display:block;font-size:8px;letter-spacing:1.8px;color:#789aa4;margin-bottom:9px}.stat strong{font-size:17px;font-weight:400;color:#d6e7e4}.stat small{font-size:10px;color:#82a5ae}.hint{position:absolute;bottom:102px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:10px;color:#b9cfd0;font-size:11px;white-space:nowrap;background:#0827309c;padding:11px 18px;border:1px solid #9bd2d01c;border-radius:30px;backdrop-filter:blur(8px);pointer-events:none}.hint svg{width:16px;height:16px;color:#c6ddac}.controls{display:flex;gap:8px}button{cursor:pointer;color:#c1d4d6;background:#ffffff06;border:1px solid #9ec6ca30;border-radius:7px;padding:12px 15px;font-size:11px;display:flex;align-items:center;gap:8px;transition:.2s}button:hover{background:#a1d3c51a;border-color:#bddfc780}button svg{width:15px;height:15px}button.active{color:#cbe7b5;border-color:#cbe7b555}.credit{position:absolute;bottom:32px;left:50%;transform:translateX(-50%);color:#557d89;font-size:8px;letter-spacing:2px;white-space:nowrap}.pointer{position:fixed;border:1px solid #def4cc66;border-radius:50%;width:46px;height:46px;transform:translate(-50%,-50%);pointer-events:none;opacity:0;transition:opacity .3s;box-shadow:0 0 30px #c7f8dc0c}.pointer:after{content:'';position:absolute;inset:19px;border:1px solid #e0f5cf;border-radius:50%}#notice{position:absolute;left:50%;top:24%;transform:translateX(-50%);font-size:10px;color:#e3eec5;letter-spacing:1px;opacity:0;transition:opacity .5s;pointer-events:none}
@media(max-width:700px){header{top:23px;left:23px;right:23px}.brand{font-size:14px;letter-spacing:3px}.live{font-size:8px;letter-spacing:1px}.intro{top:96px;left:24px}.intro h1{font-size:32px}.intro p{font-size:11px}.coordinates{display:none}.bottom{left:24px;right:24px;bottom:25px;align-items:center}.statrow{gap:18px}.stat:nth-child(3){display:none}.stat strong{font-size:15px}.controls button{padding:12px}.controls span{display:none}.hint{bottom:104px;font-size:10px;padding:10px 14px}.credit{display:none}}
</style>
</head>
<body>
<div id="world"></div>
<header>
<div class="brand"><svg viewBox="0 0 36 36" fill="none"><path d="M4 18C10 6 24 6 31 18 24 30 10 30 4 18Z" stroke="#d0e4c3" stroke-width="1.2"/><path d="M4 18h27M18 8c-7 6-7 14 0 20M18 8c7 6 7 14 0 20" stroke="#d0e4c3" stroke-width="1.1"/></svg>PELAGIC</div>
<div class="live"><i class="dot"></i>A LIVING LITTLE WORLD</div>
</header>
<section class="intro"><div class="eyebrow">AN INTERACTIVE AQUARIUM</div><h1>The quiet below.</h1><p>A small ocean. A moment of wonder.<br>Come closer. They know you're here.</p></section>
<div class="coordinates">HABITAT 001<br><strong>Tropical shallows</strong><br>08° 24′ N &nbsp; 119° 18′ E</div>
<div class="hint"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.4"><path d="m6 3 12 10-6 1-3 6Z"/></svg><span id="hintText">Move your cursor near the fish. Watch them scatter.</span></div>
<div class="bottom">
<div class="statrow"><div class="stat"><label>WATER TEMP</label><strong>25.6 <small>°C</small></strong></div><div class="stat"><label>POPULATION</label><strong>38 <small>fish</small></strong></div><div class="stat"><label>ATMOSPHERE</label><strong id="mood">Peaceful</strong></div></div>
<div class="controls"><button id="feed"><svg viewBox="0 0 20 20" fill="none" stroke="currentColor"><path d="M5 5h10l-2 7H7ZM8 2h4M7 16h.1M12 17h.1M10 14h.1" stroke-linecap="round" stroke-width="1.5"/></svg><span>Feed the fish</span></button><button id="flow" class="active" title="Toggle current"><svg viewBox="0 0 20 20" fill="none" stroke="currentColor"><path d="M2 6h11c5 0 4-5 1-4M2 10h14M2 14h9c5 0 4 5 1 4" stroke-linecap="round"/></svg><span>Gentle current</span></button></div>
</div>
<div class="credit">TAKE A BREATH. STAY A WHILE.</div><div class="pointer" id="pointer"></div><div id="notice">A little something for everyone.</div>
<script type="module">
import * as THREE from 'three';
const host=document.getElementById('world');
const scene=new THREE.Scene();
scene.fog=new THREE.FogExp2(0x103d4c,.023);
const camera=new THREE.PerspectiveCamera(37,innerWidth/innerHeight,.1,150);
const renderer=new THREE.WebGLRenderer({antialias:true,alpha:true});
renderer.setPixelRatio(Math.min(devicePixelRatio,2));renderer.setSize(innerWidth,innerHeight);
renderer.toneMapping=THREE.ACESFilmicToneMapping;renderer.toneMappingExposure=1.2;
host.appendChild(renderer.domElement);
function resize(){camera.aspect=innerWidth/innerHeight;const k=Math.max(1,1.35/camera.aspect);camera.position.set(5.5*k,4.4*k,23.5*k);camera.lookAt(0,.1,0);camera.updateProjectionMatrix();renderer.setSize(innerWidth,innerHeight)}
resize();addEventListener('resize',resize);
scene.add(new THREE.HemisphereLight(0xc7efff,0x557064,2.5));
const sun=new THREE.DirectionalLight(0xe0faff,3.3);sun.position.set(-6,12,8);scene.add(sun);
const blueLight=new THREE.PointLight(0x1cbbe6,70,25);blueLight.position.set(1,3,-2);scene.add(blueLight);
const warm=new THREE.PointLight(0xffd68e,35,17);warm.position.set(-6,2,3);scene.add(warm);
const mat=(color,roughness=.7)=>new THREE.MeshStandardMaterial({color,roughness});
const edgeMat=new THREE.LineBasicMaterial({color:0x85dbe4,transparent:true,opacity:.26});
const box=new THREE.BoxGeometry(18,8.2,7.4);
const edges=new THREE.LineSegments(new THREE.EdgesGeometry(box),edgeMat);edges.position.y=.45;scene.add(edges);
const back=new THREE.Mesh(new THREE.PlaneGeometry(18,8.2),new THREE.MeshStandardMaterial({color:0x0a4c62,roughness:1}));back.position.set(0,.45,-3.7);scene.add(back);
const side=new THREE.Mesh(new THREE.PlaneGeometry(7.4,8.2),new THREE.MeshPhysicalMaterial({color:0x5bafbc,transparent:true,opacity:.045,side:THREE.DoubleSide,roughness:.15,depthWrite:false}));side.rotation.y=Math.PI/2;side.position.set(9,.45,0);scene.add(side);
function slab(w,h,d,x,y,z,color){const m=new THREE.Mesh(new THREE.BoxGeometry(w,h,d),mat(color));m.position.set(x,y,z);scene.add(m);return m}
slab(18.25,.18,7.65,0,-3.73,0,0x153d46);slab(18.35,.13,7.75,0,-3.89,0,0x08232d);
const sandCanvas=document.createElement('canvas');sandCanvas.width=sandCanvas.height=512;
const cx=sandCanvas.getContext('2d');cx.fillStyle='#b1b6a0';cx.fillRect(0,0,512,512);
for(let i=0;i<22000;i++){let v=120+Math.random()*90;cx.fillStyle=`rgba(${v},${v},${v-15},${Math.random()*.4})`;cx.fillRect(Math.random()*512,Math.random()*512,1.5,1.5)}
for(let i=0;i<70;i++){cx.strokeStyle='rgba(232,255,221,.16)';cx.lineWidth=1+Math.random()*3;cx.beginPath();let x=Math.random()*512,y=Math.random()*512;cx.moveTo(x,y);cx.bezierCurveTo(x+70,y-50,x+10,y+65,x+130,y+30);cx.stroke()}
const tex=new THREE.CanvasTexture(sandCanvas);tex.wrapS=tex.wrapT=THREE.RepeatWrapping;tex.repeat.set(3,1.5);
const sand=new THREE.Mesh(new THREE.PlaneGeometry(18,7.4),new THREE.MeshStandardMaterial({map:tex,roughness:1,color:0xc1d6bd}));sand.rotation.x=-Math.PI/2;sand.position.y=-3.62;scene.add(sand);
const water=new THREE.Mesh(new THREE.PlaneGeometry(18,7.4,30,20),new THREE.MeshPhysicalMaterial({color:0x77d4d7,transparent:true,opacity:.105,roughness:.23,metalness:.1,side:THREE.DoubleSide,depthWrite:false}));water.rotation.x=-Math.PI/2;water.position.y=4.53;scene.add(water);
const rockGeo=new THREE.IcosahedronGeometry(1,1);
function rock(x,y,z,s){const r=new THREE.Mesh(rockGeo,mat([0x566b64,0x718278,0x879687,0x465f5c][Math.floor(Math.random()*4)]));r.position.set(x,y,z);r.scale.set(s,s*.65,s*.7);r.rotation.set(Math.random(),Math.random()*5,Math.random());scene.add(r)}
for(let i=0;i<29;i++){let x=(Math.random()-.5)*17,z=(Math.random()-.5)*6;rock(x,-3.5,z,.16+Math.random()*.4)}
rock(-6.5,-3.2,-1.5,1.4);rock(6.6,-3.2,-1.5,1.15);rock(5.2,-3.35,-2.2,.8);
const plants=[];
function kelp(x,z,height,color){
 const group=new THREE.Group();group.position.set(x,-3.6,z);scene.add(group);
 for(let j=0;j<6;j++){
  const h=height*(.45+Math.random()*.55),ang=Math.random()*Math.PI*2;
  const geo=new THREE.BufferGeometry(),pts=[],uv=[],idx=[];
  const phase=Math.random()*5;
  for(let i=0;i<=15;i++){let t=i/15,w=Math.sin(Math.PI*t)*.16+.012;let bend=Math.sin(t*3+phase)*t*.45;for(let s of [-1,1]){pts.push(Math.cos(ang)*(bend+s*w),t*h,Math.sin(ang)*(bend+s*w));uv.push(s===-1?0:1,t)}if(i<15){let a=i*2;idx.push(a,a+1,a+2,a+1,a+3,a+2)}}
  geo.setAttribute('position',new THREE.Float32BufferAttribute(pts,3));geo.setAttribute('uv',new THREE.Float32BufferAttribute(uv,2));geo.setIndex(idx);geo.computeVertexNormals();
  const m=new THREE.Mesh(geo,new THREE.MeshStandardMaterial({color,side:THREE.DoubleSide,roughness:.65}));m.rotation.y=Math.random()*6;group.add(m);
 }
 plants.push({group,phase:Math.random()*6});
}
for(let i=0;i<24;i++){let x=(Math.random()-.5)*17;kelp(x,-2.3+Math.random()*2,1+Math.random()*2.5,[0x478c78,0x5f9a73,0x2e7d73,0x9db583][i%4])}
for(let i=0;i<12;i++)kelp((i<6?-7:7)+Math.random()*1.2,1+Math.random()*1.5,.6+Math.random(),0x6caa87);
function coral(x,z,color,size){
 const g=new THREE.Group();g.position.set(x,-3.58,z);scene.add(g);const material=mat(color);
 function branch(p,dir,len,r,depth){
  const end=p.clone().addScaledVector(dir,len);
  const path=new THREE.CatmullRomCurve3([p,p.clone().lerp(end,.45).add(new THREE.Vector3(.07,0,.05)),end]);
  g.add(new THREE.Mesh(new THREE.TubeGeometry(path,5,r,5,false),material));
  const tip=new THREE.Mesh(new THREE.SphereGeometry(r,7,5),material);tip.position.copy(end);g.add(tip);
  if(depth>0)for(let j=0;j<2;j++)branch(end,new THREE.Vector3((j?1:-1)*(.25+Math.random()*.4),.7+Math.random()*.3,(Math.random()-.5)*.7).normalize(),len*.69,r*.7,depth-1);
 }
 for(let k=0;k<3;k++)branch(new THREE.Vector3((k-1)*.2,0,0),new THREE.Vector3((k-1)*.3,1,0).normalize(),size,.09,3);
}
coral(-5,1.8,0xc08c97,.7);coral(5.8,1.6,0xb7a2ca,.75);coral(-7.9,-1.3,0x75bdac,.9);coral(2.8,-2,0xd2a47b,.5);
const fish=[];
const sphere=new THREE.SphereGeometry(1,24,14);
const eyeMat=new THREE.MeshStandardMaterial({color:0x081d26,roughness:.1});
const irisMat=mat(0xe3f3d8);
function finGeometry(points){const s=new THREE.Shape();s.moveTo(...points[0]);for(let i=1;i<points.length;i++)s.lineTo(...points[i]);return new THREE.ShapeGeometry(s)}
const tailGeo=finGeometry([[0,0],[-.48,.4],[-.40,.08],[-.47,-.37]]);
const dorsalGeo=finGeometry([[.25,.17],[-.15,.51],[-.43,.18]]);
const palettes=[{body:0xf2cc64,fin:0xe9a642},{body:0x51c6cf,fin:0x3588b9},{body:0xf09476,fin:0xce605e},{body:0xa5bbdc,fin:0x647fb9}];
function makeFish(i){
 const type=i%4,pal=palettes[type],g=new THREE.Group(),bodymat=new THREE.MeshStandardMaterial({color:pal.body,roughness:.35,metalness:.12});
 const body=new THREE.Mesh(sphere,bodymat);body.scale.set(.57,type===0?.28:.225,.155);g.add(body);
 const fm=new THREE.MeshStandardMaterial({color:pal.fin,side:THREE.DoubleSide,transparent:true,opacity:.86,roughness:.6});
 const tail=new THREE.Mesh(tailGeo,fm);tail.position.x=-.48;g.add(tail);
 const top=new THREE.Mesh(dorsalGeo,fm);g.add(top);
 const bottom=new THREE.Mesh(dorsalGeo,fm);bottom.scale.set(.7,-.6,1);bottom.position.x=-.12;g.add(bottom);
 for(let side of [-1,1]){
  const eye=new THREE.Mesh(sphere,irisMat);eye.scale.set(.068,.069,.027);eye.position.set(.35,.075,side*.138);g.add(eye);
  const pupil=new THREE.Mesh(sphere,eyeMat);pupil.scale.set(.041,.046,.016);pupil.position.set(.365,.075,side*.161);g.add(pupil);
  const fin=new THREE.Mesh(finGeometry([[.1,0],[-.25,-.21],[-.17,.06]]),fm);fin.position.set(.04,-.05,side*.15);fin.rotation.y=side*.6;g.add(fin);
  // A luminous lateral line catches the overhead light.
  const curve=new THREE.CatmullRomCurve3([new THREE.Vector3(-.43,.02,side*.105),new THREE.Vector3(0,.04,side*.155),new THREE.Vector3(.25,.05,side*.14)]);
  g.add(new THREE.Mesh(new THREE.TubeGeometry(curve,10,.009,4,false),mat(type===1?0xb3f8e4:pal.fin)));
 }
 const scale=.55+Math.random()*.43;g.scale.setScalar(scale);
 g.position.set((Math.random()-.5)*15,-1.5+Math.random()*4.9,(Math.random()-.5)*5.3);
 scene.add(g);
 const dir=i%2?1:-1;
 fish.push({g,tail,v:new THREE.Vector3(dir*(.45+Math.random()*.35),0,0),phase:Math.random()*6,size:scale,fear:0});
}
for(let i=0;i<38;i++)makeFish(i);
const bubbleGeo=new THREE.SphereGeometry(1,8,8),bubbleMat=new THREE.MeshPhysicalMaterial({color:0xb6f0ec,transparent:true,opacity:.23,roughness:.08,metalness:.2});
const bubbles=[];
for(let i=0;i<65;i++){const b=new THREE.Mesh(bubbleGeo,bubbleMat);const s=.015+Math.random()*.045;b.scale.setScalar(s);b.position.set((Math.random()-.5)*17,Math.random()*8-3.5,(Math.random()-.5)*6);scene.add(b);bubbles.push(b)}
// Fine suspended particles make the depth of the water visible.
const particleGeo=new THREE.BufferGeometry(),particlePos=[];
for(let i=0;i<440;i++)particlePos.push((Math.random()-.5)*17,Math.random()*8-3.5,(Math.random()-.5)*7);
particleGeo.setAttribute('position',new THREE.Float32BufferAttribute(particlePos,3));
scene.add(new THREE.Points(particleGeo,new THREE.PointsMaterial({color:0xc0e3d5,size:.025,transparent:true,opacity:.35,depthWrite:false})));
const beamMat=new THREE.MeshBasicMaterial({color:0x88dce0,transparent:true,opacity:.023,side:THREE.DoubleSide,depthWrite:false,blending:THREE.AdditiveBlending});
for(let i=0;i<5;i++){const beam=new THREE.Mesh(new THREE.ConeGeometry(1.8,8,24,1,true),beamMat);beam.position.set(-6+i*3,.45,-1.8);beam.rotation.z=-.16;scene.add(beam)}
let pointerOn=false,lastMove=0,current=true,feeding=0;
const mouse=new THREE.Vector2(10,10),ray=new THREE.Raycaster(),plane=new THREE.Plane(),hit=new THREE.Vector3(),away=new THREE.Vector3();
const pointer=document.getElementById('pointer'),mood=document.getElementById('mood');
renderer.domElement.addEventListener('pointermove',e=>{mouse.set(e.clientX/innerWidth*2-1,-e.clientY/innerHeight*2+1);pointerOn=true;lastMove=performance.now();pointer.style.left=e.clientX+'px';pointer.style.top=e.clientY+'px';pointer.style.opacity='1'});
renderer.domElement.addEventListener('pointerleave',()=>{pointerOn=false;pointer.style.opacity='0'});
renderer.domElement.addEventListener('pointerdown',e=>{mouse.set(e.clientX/innerWidth*2-1,-e.clientY/innerHeight*2+1);pointerOn=true;lastMove=performance.now()});
document.getElementById('flow').onclick=e=>{current=!current;e.currentTarget.classList.toggle('active',current);e.currentTarget.querySelector('span').textContent=current?'Gentle current':'Still water'};
const food=[];
document.getElementById('feed').onclick=()=>{
 feeding=9;
 for(let i=0;i<28;i++){const pellet=new THREE.Mesh(new THREE.SphereGeometry(.035,6,5),mat(0xe7c78b));pellet.position.set((Math.random()-.5)*8,3.8+Math.random()*.5,(Math.random()-.5)*3);scene.add(pellet);food.push(pellet)}
 const n=document.getElementById('notice');n.style.opacity=1;setTimeout(()=>n.style.opacity=0,2400);
};
const clock=new THREE.Clock();let elapsed=0;
const xAxis=new THREE.Vector3(1,0,0),orientation=new THREE.Quaternion(),dir=new THREE.Vector3();
function animate(){
 requestAnimationFrame(animate);const dt=Math.min(clock.getDelta(),.035);elapsed+=dt;
 if(pointerOn&&performance.now()-lastMove>2200){pointerOn=false;pointer.style.opacity=0}
 ray.setFromCamera(mouse,camera);
 let startled=0;feeding=Math.max(0,feeding-dt);
 fish.forEach((f,i)=>{
  const p=f.g.position;
  let ax=Math.sin(elapsed*.52+f.phase)*.22,ay=Math.sin(elapsed*.8+f.phase)*.19,az=Math.cos(elapsed*.4+f.phase)*.13;
  if(p.x>7.6)ax-=(p.x-7.6)*1.7;if(p.x< -7.6)ax+=(-7.6-p.x)*1.7;
  if(p.y>3.3)ay-=(p.y-3.3)*1.7;if(p.y< -2.3)ay+=(-2.3-p.y)*1.7;
  if(p.z>2.7)az-=(p.z-2.7)*1.6;if(p.z< -2.6)az+=(-2.6-p.z)*1.6;
  f.fear=Math.max(0,f.fear-dt*.8);
  if(pointerOn){
   plane.set(new THREE.Vector3(0,0,1),-p.z);
   if(ray.ray.intersectPlane(plane,hit)){
    away.subVectors(p,hit);const d=away.length();
    if(d<2.45){away.normalize();const force=(1-d/2.45)*10;ax+=away.x*force;ay+=away.y*force;az+=away.z*force;f.fear=1;startled++}
   }
  }
  if(feeding>0&&food.length&&f.fear<.2){const target=food[i%food.length].position;away.subVectors(target,p);const d=away.length();away.normalize();ax+=away.x*.8;ay+=away.y*.8;az+=away.z*.8;if(d<.24){const pellet=food.splice(i%food.length,1)[0];scene.remove(pellet)}}
  f.v.x+=ax*dt;f.v.y+=ay*dt;f.v.z+=az*dt;
  const speed=f.v.length(),target=(current?.66:.32)+f.fear*1.9;
  if(speed>.001)f.v.multiplyScalar(1+(target/speed-1)*dt*.85);
  p.addScaledVector(f.v,dt);
  // Smooth banking and flexible tails, rather than rigid back-and-forth motion.
  dir.copy(f.v).normalize();orientation.setFromUnitVectors(xAxis,dir);f.g.quaternion.slerp(orientation,dt*4);
  f.tail.rotation.y=Math.sin(elapsed*(8+f.fear*11)+f.phase)*.5;
  f.g.rotateX(Math.sin(elapsed*2+f.phase)*.035);
 });
 mood.textContent=startled?'Curious → cautious':feeding?'Feeding time':'Peaceful';
 plants.forEach(p=>{p.group.rotation.z=Math.sin(elapsed*.65+p.phase)*(current?.035:.01);p.group.rotation.x=Math.sin(elapsed*.5+p.phase)*.025});
 bubbles.forEach((b,i)=>{b.position.y+=dt*(.17+(i%5)*.055);b.position.x+=Math.sin(elapsed+i)*dt*.025;if(b.position.y>4.4)b.position.y=-3.4});
 food.forEach(p=>{p.position.y-=dt*.24;if(p.position.y< -3.5)p.position.y=-3.5});
 water.position.y=4.53+Math.sin(elapsed)*.013;
 renderer.render(scene,camera);
}
animate();
</script>
</body>
</html>
Reasoning trace (1,034 tokens)
**Designing aquarium renderings**

I need to create a striking 3D rendering of an ocean aquarium, focusing on a polished dark blue UI. The fish should be colorful and procedurally generated with detailed features like fins and scales. I’m considering using spheres for the fish bodies and adding 40 neon-colored fish swimming around. I also need to think about the aquarium's structure, camera angles, and the scene's elements like sand, reefs, and bubbles to enhance the overall aesthetic.**Designing aquarium interface**

I’m focusing on creating a sand floor plane with a procedural texture generated directly on the canvas, with no need for external elements. The aquarium model will feature clean frame rails and a deep blue opaque back wall. I want a clear UI branding that includes “PELAGIC / INTERACTIVE AQUARIUM” at the top left and “LIVE HABITAT / 42 specimens” at the top right, ensuring not to overcrowd the header. There'll be interaction cues, like cursor movements causing ripples in the water.**Implementing fish interaction**

I need to ensure that the fish respond actively when the user moves the mouse. I'll track the pointer movement and make the fish flee when the cursor is within a 2.5 radius. Their orientation and velocity will be managed based on their body position and a quaternion for realistic movement. I want to incorporate vibrant yellow and blue colors for the fish and keep the lighting standard. The camera positioning will focus on providing a beautiful view of the aquarium while filling the central area.**Creating fish mesh silhouettes**

I'm trying to create 3D credible fish silhouettes with textured scales using a generated canvas texture. I want to explore different color palettes for each species, considering the physical body material. The body should have a spherical shape with a tail shaped like a triangle or butterfly. The layout includes a lateral width along the X axis and an extension of the tail in the negative X direction with vertical fan geometry. I'll be using triangular points for the tail surfaces too.