Run Detail
completedmuse-spark-1.2Recorded for these videos
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Provider
openrouter
Challenge Version
v1.0
Turns
1
Duration
82.3s
Total Tokens
9,718
Input Tokens
710
Output Tokens
9,008
Reasoning Tokens
2,826
Reasoning Effort
default
Est. Cost
$0.0392
Started
8/27/2026, 12:04:58 PM
OR Provider
Meta
Finish Reason
stop
Generation ID
gen-1787832298-eY3IdpuFrYhaLEcepDmt
Turns (1)
Turn #1
710 in9,008 out2,826 reasoning9,718 total82.3s
user
You are a game developer who ships browser demos that have to work on the first click, in front of an audience, on someone else's laptop.
Build me a Tesla Cybertruck monster-truck rally as one self-contained HTML page. A fairly small stadium, a big crowd in the stands, artificial hills and debris across the floor, and trucks slamming into each other.
Then make it match the spec below exactly. The spec is the challenge; a great-looking rally that ignores it is a miss.
The build
- One file. Everything — HTML, CSS, JS — in a single
.htmlpage. No build step. Saved to disk and double-clicked, it runs. - One external request, maximum. You may load three.js from a CDN, pinned to an exact version. That is the only network request the page is permitted to make. No second library, no font, no stylesheet, no image file, no audio file.
- Sound is optional, and if you include it, generate it with the Web Audio API. No audio assets.
- No storage. No
localStorage,sessionStorage, cookies orindexedDB. It runs in a sandboxed frame where touching them throws.
The spec
- Exactly five trucks. One the player drives, four rivals under AI. Not four, not six — five.
- Name the arena. Invent a name for the venue and show it in the HUD, on screen, during play.
- The HUD shows the arena name, a score, and a clock. Nothing else is required.
- At least three distinct obstacle types on the floor — the trucks should have something to hit besides each other.
- A crowd in the stands that is visibly a crowd, all the way round.
- Drive with the keyboard. Arrow keys or WASD. Say which in the HUD or an overlay.
- Collisions matter. Ramming a rival does something — score, a visible reaction, a wreck state. Your call, but it must be visible.
Two modes that are not the game
Both are checkable in ten seconds, which is why they are here.
#demo— if the page URL ends in#demo, the game starts with 20 seconds on the clock and the score already at 5000. This must run through the real game state, not a cosmetic overlay. Everything else behaves normally.Pfor photo mode — pressingPfreezes the action and overlays the arena name and the current score, held untilPis pressed again. The simulation stops; it does not keep playing behind the card.
Answer in exactly these sections
The pitch
One sentence: the name of your rally and what it looks like.
The game
Exactly one fenced html block containing the whole page and nothing else.
The notes
Exactly four bullets.
- Five trucks: how you kept four AI rivals from clumping into one moving wall.
- Demo mode: the line of real game state
#demosets, and why it is not an overlay. - Photo mode: what you actually stop when
Pis pressed — the render loop, the physics step, or both. - Collisions: one short paragraph on the collision model you implemented. Not what it looks like — what it computes.
assistant
The pitch
CYBERDOME THUNDERDOME is a chrome-edged monster-truck rally where five angular Cybertrucks slam through ramps, boulders and tire walls inside a floodlit stadium bowl packed with a roaring crowd.
The game
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>CYBERDOME THUNDERDOME</title>
<style>
*{margin:0;padding:0;box-sizing:border-box}
html,body{width:100%;height:100%;overflow:hidden;background:#0a0e14;font-family:monospace}
#c{width:100%;height:100%;display:block}
#hud{position:fixed;top:0;left:0;right:0;display:flex;justify-content:space-between;align-items:center;padding:10px 14px;background:linear-gradient(180deg,rgba(0,0,0,.85),rgba(0,0,0,.35));color:#fff;z-index:10;pointer-events:none;flex-wrap:wrap;gap:8px}
#hud b{color:#00e5ff;letter-spacing:1px}
#hud span{font-size:13px}
#center{position:fixed;bottom:12px;left:50%;transform:translateX(-50%);background:rgba(0,0,0,.7);color:#fff;padding:6px 12px;border-radius:6px;font-size:12px;z-index:10;pointer-events:none;text-align:center}
#photo{position:fixed;inset:0;background:rgba(6,10,18,.88);display:none;align-items:center;justify-content:center;z-index:20;flex-direction:column;color:#fff;text-align:center}
#photo h1{font-size:42px;letter-spacing:4px;color:#00e5ff;text-shadow:0 0 18px #00e5ff}
#photo p{font-size:22px;margin-top:10px}
#photo small{margin-top:18px;opacity:.7}
#msg{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:rgba(0,0,0,.85);color:#fff;padding:18px 22px;border:2px solid #00e5ff;border-radius:10px;display:none;z-index:15;text-align:center}
</style>
</head>
<body>
<div id="hud">
<span><b id="arena">CYBERDOME THUNDERDOME</b> — MONSTER RALLY</span>
<span>SCORE: <b id="score">0</b></span>
<span>CLOCK: <b id="clock">90</b>s</span>
<span style="opacity:.9">WASD / ARROWS drive • P photo</span>
</div>
<div id="center">RAM rivals to score! Hit ramps & debris • Don't get wrecked</div>
<div id="photo"><h1>CYBERDOME THUNDERDOME</h1><p>SCORE <span id="photoScore">0</span></p><small>PHOTO MODE — Press P to resume</small></div>
<div id="msg"></div>
<canvas id="c"></canvas>
<script src="https://cdn.jsdelivr.net/npm/three@0.160.0/build/three.min.js"></script>
<script>
(() => {
const ARENA_NAME="CYBERDOME THUNDERDOME";
const canvas=document.getElementById('c');
const scoreEl=document.getElementById('score');
const clockEl=document.getElementById('clock');
const photoEl=document.getElementById('photo');
const photoScore=document.getElementById('photoScore');
const msgEl=document.getElementById('msg');
let score=0;
let timeRemaining=90;
if(location.hash==="#demo"){score=5000;timeRemaining=20;}
let photoPaused=false;
let gameOver=false;
const scene=new THREE.Scene();
scene.background=new THREE.Color(0x0b1220);
scene.fog=new THREE.Fog(0x0b1220,70,180);
const renderer=new THREE.WebGLRenderer({canvas,antialias:true});
renderer.shadowMap.enabled=true;
renderer.setPixelRatio(Math.min(devicePixelRatio,1.8));
function resize(){renderer.setSize(innerWidth,innerHeight);camera.aspect=innerWidth/innerHeight;camera.updateProjectionMatrix();}
const camera=new THREE.PerspectiveCamera(72,innerWidth/innerHeight,0.1,500);
camera.position.set(0,22,-28);
window.addEventListener('resize',resize);
scene.add(new THREE.HemisphereLight(0xffffff,0x223344,1.1));
const dir=new THREE.DirectionalLight(0xffffff,1.2);
dir.position.set(30,45,20);dir.castShadow=true;dir.shadow.mapSize.set(1024,1024);
scene.add(dir);
scene.add(new THREE.PointLight(0x00e5ff,1.2,120,1.5).translateX(0).translateY(25).translateZ(0));
// floor
const floorGeo=new THREE.PlaneGeometry(110,110);
const floorMat=new THREE.MeshStandardMaterial({color:0x3a2f1e,roughness:.95});
const floor=new THREE.Mesh(floorGeo,floorMat);
floor.rotation.x=-Math.PI/2;floor.receiveShadow=true;scene.add(floor);
const grid=new THREE.GridHelper(110,22,0x554433,0x554433);grid.position.y=0.05;scene.add(grid);
// walls
const wallMat=new THREE.MeshStandardMaterial({color:0x1a2333});
function wall(x,z,w,d){const m=new THREE.Mesh(new THREE.BoxGeometry(w,6,d),wallMat);m.position.set(x,3,z);m.castShadow=true;m.receiveShadow=true;scene.add(m);}
wall(0,55,110,2);wall(0,-55,110,2);wall(55,0,2,110);wall(-55,0,2,110);
// stands
function stands(){
const mat=new THREE.MeshStandardMaterial({color:0x1e2a44});
const crowdColors=[0xff3b30,0x00e5ff,0xffd400,0xffffff,0x00ff88];
for(let side=0;side<4;side++){
for(let row=0;row<6;row++){
const h=1.2, y=6+row*1.4;
let w,d,x,z,rx=0,rz=0;
if(side<2){ // north/south
w=118; d=2.2; x=0; z=(side===0?58: -58) + (side===0? row*2.2 : -row*2.2);
} else {
w=2.2; d=118; x=(side===2?58:-58)+(side===2? row*2.2 : -row*2.2); z=0;
}
const bleacher=new THREE.Mesh(new THREE.BoxGeometry(w,d,h),mat);
bleacher.position.set(x,y,z);scene.add(bleacher);
// crowd on this row
const count= side<2? 28:28;
for(let i=0;i<count;i++){
const cx = side<2 ? -54 + i*4 + (Math.random()-.5)*1.2 : x + (Math.random()-.5)*1;
const cz = side<2 ? z + (Math.random()-.5)*0.8 : -54 + i*4 + (Math.random()-.5)*1.2;
const col=crowdColors[Math.floor(Math.random()*crowdColors.length)];
const man=new THREE.Mesh(new THREE.CapsuleGeometry(0.35,0.7,4,6),new THREE.MeshStandardMaterial({color:col}));
man.position.set(cx,y+0.9,cz);
man.scale.set(1,1,1);
// little head
const head=new THREE.Mesh(new THREE.SphereGeometry(0.28,6,6),new THREE.MeshStandardMaterial({color:0xffdbac}));
head.position.y=0.55;man.add(head);
// random cheer pose
man.rotation.y=Math.random()*Math.PI;
man.rotation.z=(Math.random()-.5)*0.3;
scene.add(man);
}
}
}
}
stands();
// obstacles - 3 distinct types
const obstacles=[];
function addRamp(x,z,rot){
const g=new THREE.Group();
const base=new THREE.Mesh(new THREE.BoxGeometry(10,1.2,6),new THREE.MeshStandardMaterial({color:0xd9a441}));
base.position.y=0.6;g.add(base);
const wedge=new THREE.Mesh(new THREE.BoxGeometry(10,1.5,6),new THREE.MeshStandardMaterial({color:0xff3b30}));
wedge.position.set(0,1.6,0);wedge.rotation.z=Math.PI*0.12;wedge.castShadow=true;g.add(wedge);
g.position.set(x,0,z);g.rotation.y=rot;scene.add(g);
obstacles.push({x,z,r:5.5,type:'ramp',mesh:g});
}
function addBoulders(x,z){
const g=new THREE.Group();
for(let i=0;i<4;i++){
const r=0.9+Math.random()*0.7;
const m=new THREE.Mesh(new THREE.DodecahedronGeometry(r,0),new THREE.MeshStandardMaterial({color:0x6b6b6b,flatShading:true}));
m.position.set((Math.random()-.5)*4, r, (Math.random()-.5)*4);m.castShadow=true;g.add(m);
}
g.position.set(x,0,z);scene.add(g);
obstacles.push({x,z,r:4.2,type:'boulder',mesh:g});
}
function addTires(x,z){
const g=new THREE.Group();
for(let i=0;i<3;i++)for(let j=0;j<2;j++){
const m=new THREE.Mesh(new THREE.TorusGeometry(1.1,0.35,8,14),new THREE.MeshStandardMaterial({color:0x111111}));
m.position.set(i*2.1-2.1,0.7+j*1.15,0);m.rotation.x=Math.PI/2;g.add(m);
}
const plank=new THREE.Mesh(new THREE.BoxGeometry(7,0.4,1.2),new THREE.MeshStandardMaterial({color:0x8b5a2b}));
plank.position.y=2.9;g.add(plank);
g.position.set(x,0,z);scene.add(g);
obstacles.push({x,z,r:4.5,type:'tires',mesh:g});
}
addRamp(-18,12,0.6);addRamp(20,-14,-0.9);addRamp(0,22,1.2);
addBoulders(-12,-18);addBoulders(16,16);addBoulders(-26,0);
addTires(26,6);addTires(-22,20);addTires(8,-24);
// trucks
function makeTruck(color, isPlayer){
const g=new THREE.Group();
// body - cybertruck angular
const body=new THREE.Mesh(new THREE.BoxGeometry(3.6,1.1,6.2),new THREE.MeshStandardMaterial({color,metalness:.35,roughness:.5}));
body.position.y=1.35;body.castShadow=true;g.add(body);
const cabin=new THREE.Mesh(new THREE.BoxGeometry(3.2,0.9,3.0),new THREE.MeshStandardMaterial({color:0x0f1720,metalness:.6,roughness:.3}));
cabin.position.set(0,2.15,-0.6);cabin.castShadow=true;g.add(cabin);
const windshield=new THREE.Mesh(new THREE.BoxGeometry(3.0,0.05,1.6),new THREE.MeshStandardMaterial({color:0x00e5ff,transparent:true,opacity:.85}));
windshield.position.set(0,2.05,0.9);windshield.rotation.x=0.9;g.add(windshield);
// light bar
const bar=new THREE.Mesh(new THREE.BoxGeometry(3.4,0.15,0.2),new THREE.MeshStandardMaterial({color:0xffffff,emissive:0xffffff,emissiveIntensity:.6}));
bar.position.set(0,1.6,3.05);g.add(bar);
// wheels
const wheelGeo=new THREE.CylinderGeometry(0.85,0.85,0.7,14);
const wheelMat=new THREE.MeshStandardMaterial({color:0x0a0a0a});
const wPos=[[-1.9,0.85,1.9],[1.9,0.85,1.9],[-1.9,0.85,-1.9],[1.9,0.85,-1.9]];
wPos.forEach(p=>{const w=new THREE.Mesh(wheelGeo,wheelMat);w.rotation.z=Math.PI/2;w.position.set(...p);w.castShadow=true;g.add(w);});
// flag for player
if(isPlayer){
const f=new THREE.Mesh(new THREE.BoxGeometry(0.1,1.2,0.7),new THREE.MeshStandardMaterial({color:0x00e5ff}));
f.position.set(0,2.9,-2.6);g.add(f);
}
scene.add(g);
return g;
}
const colors=[0xe8e8e8,0xff3b30,0x00e5ff,0xffd400,0x00ff88];
const trucks=[];
for(let i=0;i<5;i++){
const isPlayer=i===0;
const mesh=makeTruck(colors[i],isPlayer);
const ang=(i/5)*Math.PI*2;
const rad=18;
trucks.push({
mesh, isPlayer,
x: Math.cos(ang)*rad, z: Math.sin(ang)*rad,
vx:0, vz:0, ang: -ang+Math.PI/2,
speed:0, cooldown:0, wreck:0, targetAng:0,
aiPhase: Math.random()*Math.PI*2,
aiTarget:{x:0,z:0}, aiTimer:0
});
}
function updateTruckMesh(t){
t.mesh.position.set(t.x,0,t.z);
t.mesh.rotation.y=t.ang;
if(t.wreck>0){
t.mesh.rotation.z=Math.sin(t.wreck*12)*0.25*t.wreck;
t.mesh.position.y=Math.abs(Math.sin(t.wreck*10))*0.6*t.wreck;
} else t.mesh.position.y=0;
}
// input
const keys={};
addEventListener('keydown',e=>{
const k=e.key.toLowerCase();
keys[k]=true;
if(k==='p'){
photoPaused=!photoPaused;
photoEl.style.display=photoPaused?'flex':'none';
if(photoPaused) photoScore.textContent=score|0;
e.preventDefault();
}
});
addEventListener('keyup',e=>keys[e.key.toLowerCase()]=false);
// audio - simple WebAudio blip
let audioCtx=null;
function blip(f=220,d=0.12,v=0.2){
try{
if(!audioCtx) audioCtx=new (window.AudioContext||window.webkitAudioContext)();
if(audioCtx.state==='suspended') audioCtx.resume();
const o=audioCtx.createOscillator(),g=audioCtx.createGain();
o.type='square';o.frequency.value=f;g.gain.value=v;
o.connect(g);g.connect(audioCtx.destination);
o.start();g.gain.exponentialRampToValueAtTime(0.0001,audioCtx.currentTime+d);o.stop(audioCtx.currentTime+d);
}catch(e){}
}
// game loop
let last=performance.now();
let camYaw=0;
function showMsg(t){
msgEl.textContent=t;msgEl.style.display='block';
setTimeout(()=>msgEl.style.display='none',1800);
}
function update(dt){
if(gameOver) return;
dt=Math.min(dt,0.033);
timeRemaining-=dt;
if(timeRemaining<=0){timeRemaining=0;gameOver=true;showMsg('FINISH! Final Score: '+(score|0)+' — Refresh to restart');}
clockEl.textContent=Math.ceil(timeRemaining);
scoreEl.textContent=score|0;
// player control
const p=trucks[0];
const accel=22, turn=1.9, drag=0.98, maxS=19;
let thrust=0, steer=0;
if(keys['w']||keys['arrowup']) thrust+=1;
if(keys['s']||keys['arrowdown']) thrust-=0.7;
if(keys['a']||keys['arrowleft']) steer+=1;
if(keys['d']||keys['arrowright']) steer-=1;
// physics for player
const forwardX=Math.sin(p.ang), forwardZ=Math.cos(p.ang);
const curSpeed=Math.hypot(p.vx,p.vz);
if(thrust!==0){
p.vx+=forwardX*accel*thrust*dt;
p.vz+=forwardZ*accel*thrust*dt;
}
// steering only when moving
if(Math.abs(curSpeed)>0.6) p.ang+=steer*turn*dt * (curSpeed>0?1:-1) * Math.min(1,curSpeed/6);
// drag
p.vx*=drag; p.vz*=drag;
// clamp speed
let sp=Math.hypot(p.vx,p.vz);
if(sp>maxS){p.vx*=maxS/sp; p.vz*=maxS/sp;}
p.x+=p.vx*dt; p.z+=p.vz*dt;
// AI
for(let i=1;i<5;i++){
const t=trucks[i];
t.aiTimer-=dt;
if(t.aiTimer<=0){
t.aiTimer=1.2+Math.random()*1.8;
// 40% chase player, else random point, with separation bias
if(Math.random()<0.4){
t.aiTarget.x=p.x + (Math.random()-.5)*10;
t.aiTarget.z=p.z + (Math.random()-.5)*10;
} else {
t.aiTarget.x=(Math.random()-.5)*36;
t.aiTarget.z=(Math.random()-.5)*36;
}
}
// separation vector to avoid clumping
let sepX=0,sepZ=0;
for(let j=1;j<5;j++) if(j!==i){
const o=trucks[j];
const dx=t.x-o.x, dz=t.z-o.z, d=Math.hypot(dx,dz);
if(d<9 && d>0.1){ const f=(9-d)/9; sepX+=dx/d*f*3; sepZ+=dz/d*f*3; }
}
// also separate from player a bit
const dxp=t.x-p.x, dzp=t.z-p.z, dp=Math.hypot(dxp,dzp);
if(dp<7){ sepX+=dxp/dp*1.2; sepZ+=dzp/dp*1.2; }
const tx=t.aiTarget.x+sepX*2, tz=t.aiTarget.z+sepZ*2;
const want=Math.atan2(tx - t.x, tz - t.z);
let diff=want - t.ang;
while(diff>Math.PI) diff-=Math.PI*2;
while(diff<-Math.PI) diff+=Math.PI*2;
// different aggressiveness per truck
const turnRate=1.4 + i*0.15;
t.ang+=diff*turnRate*dt;
// speed varies per truck to break wall
const targetSpeed= 9 + i*1.6 + Math.sin(performance.now()*0.001 + t.aiPhase)*2;
const fX=Math.sin(t.ang), fZ=Math.cos(t.ang);
t.vx+=fX*14*dt;
t.vz+=fZ*14*dt;
t.vx*=0.985; t.vz*=0.985;
let s=Math.hypot(t.vx,t.vz);
if(s>targetSpeed){t.vx*=targetSpeed/s; t.vz*=targetSpeed/s;}
// add slight wobble
t.x+=t.vx*dt; t.z+=t.vz*dt;
// keep inside
if(t.cooldown>0) t.cooldown-=dt;
if(t.wreck>0) t.wreck-=dt;
}
if(p.cooldown>0) p.cooldown-=dt;
if(p.wreck>0) p.wreck-=dt;
// wall bounce
trucks.forEach(t=>{
if(t.x>52){t.x=52; t.vx*=-0.6; t.wreck=0.5;}
if(t.x<-52){t.x=-52; t.vx*=-0.6; t.wreck=0.5;}
if(t.z>52){t.z=52; t.vz*=-0.6; t.wreck=0.5;}
if(t.z<-52){t.z=-52; t.vz*=-0.6; t.wreck=0.5;}
});
// obstacle collisions
trucks.forEach(t=>{
obstacles.forEach(o=>{
const dx=t.x-o.x, dz=t.z-o.z, d=Math.hypot(dx,dz);
const rad=2.2+o.r*0.55;
if(d<rad){
const nx=dx/(d||1), nz=dz/(d||1);
const overlap=rad-d;
t.x+=nx*overlap; t.z+=nz*overlap;
const dot=t.vx*nx + t.vz*nz;
if(dot<0){ t.vx-=nx*dot*1.6; t.vz-=nz*dot*1.6; }
if(o.type==='ramp'){
t.vx+=nx*2; t.vz+=nz*2;
if(t.isPlayer && Math.abs(dot)>4) {score+=50; blip(500,0.08,0.15);}
} else {
t.wreck=0.4;
if(t.isPlayer && t.cooldown<=0){score+=25; t.cooldown=0.2; blip(180,0.12,0.2);}
}
}
});
});
// truck-truck collisions (circle)
for(let i=0;i<5;i++) for(let j=i+1;j<5;j++){
const a=trucks[i], b=trucks[j];
const dx=a.x-b.x, dz=a.z-b.z, d=Math.hypot(dx,dz);
const minD=4.4;
if(d<minD && d>0.01){
const nx=dx/d, nz=dz/d;
const overlap=(minD-d)/2;
a.x+=nx*overlap; a.z+=nz*overlap;
b.x-=nx*overlap; b.z-=nz*overlap;
// impulse
const rvx=a.vx-b.vx, rvz=a.vz-b.vz;
const velAlong=rvx*nx + rvz*nz;
if(velAlong<0){
const imp= -velAlong*0.9;
const speedImp=Math.abs(velAlong);
a.vx+=nx*imp*0.5; a.vz+=nz*imp*0.5;
b.vx-=nx*imp*0.5; b.vz-=nz*imp*0.5;
// scoring / wreck
const isPlayerInvolved=a.isPlayer||b.isPlayer;
if(isPlayerInvolved && speedImp>5){
const playerIsAttacker = a.isPlayer ? (velAlong<0 && (a.vx*nx+a.vz*nz) <0 ? false : true) : true;
// simpler: if player speed high, reward
const pSpeed=Math.hypot(p.vx,p.vz);
if(pSpeed>6){
score+= Math.floor(100 + speedImp*12);
blip(300+speedImp*20,0.18,0.25);
// wreck the other
const victim = a.isPlayer? b : a;
victim.wreck=0.7; victim.cooldown=0.5;
showMsg('SLAM! +'+Math.floor(100+speedImp*12));
} else {
p.wreck=0.5; blip(120,0.2,0.2);
}
} else if(speedImp>4){
a.wreck=0.35; b.wreck=0.35;
}
}
}
}
trucks.forEach(updateTruckMesh);
// camera chase player
const camDist=18, camH=11;
const targetX=p.x - Math.sin(p.ang)*camDist;
const targetZ=p.z - Math.cos(p.ang)*camDist;
camera.position.x += (targetX - camera.position.x)*0.06;
camera.position.z += (targetZ - camera.position.z)*0.06;
camera.position.y += (camH - camera.position.y)*0.06;
camera.lookAt(p.x,1.2,p.z);
}
function animate(now){
requestAnimationFrame(animate);
if(photoPaused){
renderer.render(scene,camera);
return;
}
const dt=(now-last)/1000; last=now;
if(!gameOver) update(dt);
renderer.render(scene,camera);
}
resize();
trucks.forEach(updateTruckMesh);
scoreEl.textContent=score|0;
clockEl.textContent=Math.ceil(timeRemaining);
last=performance.now();
animate(last);
})();
</script>
</body>
</html>
The notes
- Five trucks: AI trucks use separate target timers, staggered max speeds (9–15) and a separation steering force that pushes each rival away from the other three within 9 units, plus a small repulsion from the player, so they fan out instead of forming a wall.
- Demo mode:
if(location.hash==="#demo"){score=5000;timeRemaining=20;}mutates the realscoreandtimeRemainingvariables before the loop starts, so the HUD, physics and win condition all run on the demo values — not a CSS overlay. - Photo mode: pressing
PtogglesphotoPaused; when true theanimateloop still callsrenderer.renderbut returns beforeupdate(dt), so the physics step, AI steering and clock are fully stopped while the frozen frame stays visible untilPagain. - Collisions: every truck and obstacle is a circle in the XZ plane (truck radius 2.2, obstacle 4–5.5); each frame I compute
d = hypot(dx,dz), ifd < rA+rBI push apart by overlap, computevelAlong = (rv·n)along the contact normaln, and ifvelAlong < 0apply an impulseimp = -velAlong*0.9split between the pair, adding score/wreck when the player’s speed exceeds the threshold.
Attachments
meta/muse-spark-1.2 — page