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No:46193

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Partical life
Developer User18896｜Date and time 24/2/24 1:12:47
Build time 6.253 sec｜Game capacity 1.25KB｜

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Click here for free DL of the app version that can save data.

let canvas = document.createElement('canvas');
document.body.appendChild(canvas);
let ctx = canvas.getContext('2d');

canvas.width = window.innerWidth;
canvas.height = window.innerHeight;

let particles = [];

class Particle {
  constructor(x, y, radius, color, dx, dy) {
    this.x = x;
    this.y = y;
    this.radius = radius;
    this.color = color;
    this.dx = dx;
    this.dy = dy;
  }

draw() {
    ctx.beginPath();
    ctx.arc(this.x, this.y, this.radius, 0, Math.PI * 2);
    ctx.fillStyle = this.color;
    ctx.fill();
  }

update() {
    this.x += this.dx;
    this.y += this.dy;
    this.draw();
  }
}

function init() {
  for (let i = 0; i < 100; i++) {
    let x = Math.random() * canvas.width;
    let y = Math.random() * canvas.height;
    let radius = Math.random() * 5 + 1;
    let color = `hsl(${Math.random() * 360}, 50%, 50%)`;
    let dx = (Math.random() - 0.5) * 4;
    let dy = (Math.random() - 0.5) * 4;

particles.push(new Particle(x, y, radius, color, dx, dy));
  }
}

function animate() {
  requestAnimationFrame(animate);
  ctx.clearRect(0, 0, canvas.width, canvas.height);

for (let i = 0; i < particles.length; i++) {
    particles[i].update();
  }
}

init();
animate();
</script>