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Cat Rain use Web Animation API instead of rAF loop #14

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Cat Rain use Web Animation API instead of rAF loop #14

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4b7cc7b
Update main.js
Martin-Pitt Dec 23, 2024
b345f75
Merge pull request #1 from Martin-Pitt/cat-rain-web-animation-api-patch
Martin-Pitt Dec 23, 2024
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27 changes: 9 additions & 18 deletions main.js
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Original file line number Diff line number Diff line change
Expand Up @@ -113,28 +113,19 @@ function createCat() {
cat.style.top = '-50px';

document.body.appendChild(cat);

// Animate falling
let posY = -50;
let rotation = Math.random() * 360;
let speedY = 1 + Math.random() * 2;
let speedRotation = -2 + Math.random() * 4;

function animate() {
posY += speedY;
rotation += speedRotation;
cat.style.top = posY + 'px';
cat.style.transform = `rotate(${rotation}deg)`;

// Remove when off screen
if (posY > window.innerHeight) {
cat.remove();
} else {
requestAnimationFrame(animate);
}
}

animate();
let distance = window.innerHeight;

cat.animate([
{ top: '-50px', rotate: `${rotation}deg` },
{ top: `${distance}px`, rotate: `${rotation * speedRotation * 4}deg` },
], {
duration: (distance / speedY * 8)
}).finished.then(() => cat.remove());
}

// Create new cats periodically
Expand Down