Big Bang HTML

1,213 kevekıbhack

Ouvrir dans l'éditeur Publiez votre code

Recommandé

29 October 2025

Exemple d'animation de bouton HTML CSS

20 August 2025

Modèle HTML CSS de formulaire de connexion et d'inscription

1 April 2026

Configuration du chargeur HTML5 et de Firebase pour le jeu Escape Road

HTML

<!DOCTYPE html>

<head>

<title>Universe Formation Simulation</title>

<style>

html, body {

margin: 0;

overflow: hidden;

background: black;

}

canvas {

display: block;

}

</style>

</head>

<body>

const canvas = document.getElementById('universe');

const ctx = canvas.getContext('2d');

canvas.width = window.innerWidth;

canvas.height = window.innerHeight;

const bodies = [];

const stars = [];

const G = 0.05; // Gravitational constant

const collisionTime = 10 * 1000;

const newBodyDelay = 10 * 1000;

const now = () => performance.now();

function rand(min, max) {

return Math.random() * (max - min) + min;

}

function createStars(count = 300) {

for (let i = 0; i < count; i++) {

stars.push({

x: rand(0, canvas.width),

y: rand(0, canvas.height),

radius: Math.random() * 1.5,

alpha: Math.random()

});

}

function drawStars() {

for (const star of stars) {

ctx.fillStyle = `rgba(255,255,255,${star.alpha})`;

ctx.beginPath();

ctx.arc(star.x, star.y, star.radius, 0, Math.PI * 2);

ctx.fill();

}

class Body {

constructor(x, y, vx, vy, radius, color) {

this.x = x;

this.y = y;

this.vx = vx;

this.vy = vy;

this.radius = radius;

this.color = color;

this.mass = radius * 2;

this.alive = true;

this.spawnTime = now();

}

applyGravity(others) {

for (const other of others) {

if (this === other || !other.alive) continue;

const dx = other.x - this.x;

const dy = other.y - this.y;

const distSq = dx * dx + dy * dy;

const dist = Math.sqrt(distSq);

if (dist < 2) continue;

const force = G * this.mass * other.mass / distSq;

const ax = force * dx / dist;

const ay = force * dy / dist;

this.vx += ax / this.mass;

this.vy += ay / this.mass;

}

move() {

this.x += this.vx;

this.y += this.vy;

}

draw() {

ctx.fillStyle = this.color;

ctx.beginPath();

ctx.arc(this.x, this.y, this.radius, 0, Math.PI * 2);

ctx.fill();

}

collidesWith(other) {

const dx = other.x - this.x;

const dy = other.y - this.y;

return Math.hypot(dx, dy) < this.radius + other.radius;

}

function spawnInitialBodies(count = 8) {

for (let i = 0; i < count; i++) {

bodies.push(new Body(

rand(100, canvas.width - 100),

rand(100, canvas.height - 100),

rand(-1, 1),

rand(10, 20),

`hsl(${rand(0, 360)}, 100%, 70%)`

));

}

function handleCollisions() {

for (let i = 0; i < bodies.length; i++) {

for (let j = i + 1; j < bodies.length; j++) {

const a = bodies[i], b = bodies[j];

if (a.alive && b.alive && now() - a.spawnTime > collisionTime && a.collidesWith(b)) {

a.alive = false;

b.alive = false;

const newX = (a.x + b.x) / 2;

const newY = (a.y + b.y) / 2;

setTimeout(() => {

bodies.push(new Body(

newX,

newY,

rand(-0.5, 0.5),

Math.min(a.radius + b.radius, 40),

`hsl(${rand(0, 360)}, 100%, 80%)`

));

}, newBodyDelay);

}

function animate() {

ctx.clearRect(0, 0, canvas.width, canvas.height);

drawStars();

handleCollisions();

for (const body of bodies) {

if (!body.alive) continue;

body.applyGravity(bodies);

body.move();

body.draw();

}

requestAnimationFrame(animate);

}

createStars();

spawnInitialBodies();

animate();

</script>

</body>

</html>

CSS