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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>🎉 Happy Birthday 🎉</title>
<style>
body {
margin: 0;
background: #000;
cursor: crosshair;
color: #fff;
font-family: "Comic Sans MS", cursive, sans-serif;
text-align: center;
}
canvas {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
z-index: -1;
}
#bdayPerson {
margin-top: 20px;
}
#greeting {
margin-top: 10px;
}
#bdayFooter {
margin-top: 20px;
margin-bottom: 10px;
}
h1 {
font-size: 5em;
font-weight: 900;
margin-bottom: 20px;
color: #FFD700; /* Increase brightness */
text-shadow: 2px 2px 4px #000000; /* Increase contrast */
}
#bdayFooter {
position: fixed;
bottom: 0;
left: 50%;
transform: translateX(-50%);
text-align: center;
color: white;
font-size: 18px;
padding: 10px 20px;
background-color: #000;
height: 50px;
}
@keyframes borderAnimation {
0% { border-color: rgb(0, 0, 0); }
25% { border-color: rgb(255, 0, 0); }
50% { border-color: rgb(0, 255, 0); }
75% { border-color: rgb(0, 0, 255); }
100% { border-color: rgb(255, 255, 255); }
}
#bdayPerson {
position: relative;
display: inline-block;
}
#bdayPerson img {
border: 2px solid rgb(0, 0, 0);
animation: borderAnimation 10s infinite alternate;
}
</style>
</head>
<body>
<h1>🎂 Happy Birthday 🎂</h1>
<canvas id="birthday"></canvas>
<div id="bdayPerson"><img src="bd.png" height="230", width="210" ></div>
<div id="greeting">
<p>"Happy Birthday, Biswajit! Words can't express how grateful I am to have you in my life. You're an amazing friend who always knows how to make me smile. Here's to another year of adventures and unforgettable memories! 💖"</p>
<p>You're more than just a friend, you're like My Misti. Thank you for always being there for me. I cherish every memory we've made together and I can't wait to create many more. Wishing you a birthday as special as you are! 🥳"</p>
<br>
<br>
<br>
<br>
<br>
</div>
<div id="bdayFooter">
<p>Crafted with heartfelt ❤️ wishes for you by Mutelad! 🎈🎁🎊</p>
</div>
<audio autoplay loop controls style="display: none;">
<source src="shot.mp3" type="audio/mpeg">
<source src="your_music_file.ogg" type="audio/ogg">
Your browser does not support the audio element.
</audio>
<script>
// helper functions
const PI2 = Math.PI * 2
const random = (min, max) => Math.random() * (max - min + 1) + min | 0
const timestamp = _ => new Date().getTime()
// container
class Birthday {
constructor() {
this.resize()
// create a lovely place to store the firework
this.fireworks = []
this.counter = 0
}
resize() {
this.width = canvas.width = window.innerWidth
let center = this.width / 2 | 0
this.spawnA = center - center / 4 | 0
this.spawnB = center + center / 4 | 0
this.height = canvas.height = window.innerHeight
this.spawnC = this.height * .1
this.spawnD = this.height * .5
}
onClick(evt) {
let x = evt.clientX || evt.touches && evt.touches[0].pageX
let y = evt.clientY || evt.touches && evt.touches[0].pageY
let count = random(3,5)
for(let i = 0; i < count; i++) this.fireworks.push(new Firework(
random(this.spawnA, this.spawnB),
this.height,
x,
y,
random(0, 260),
random(30, 110)))
this.counter = -1
}
update(delta) {
ctx.globalCompositeOperation = 'hard-light'
ctx.fillStyle = `rgba(20,20,20,${ 7 * delta })`
ctx.fillRect(0, 0, this.width, this.height)
ctx.globalCompositeOperation = 'lighter'
for (let firework of this.fireworks) firework.update(delta)
// if enough time passed... create new new firework
this.counter += delta * 3 // each second
if (this.counter >= 1) {
this.fireworks.push(new Firework(
random(this.spawnA, this.spawnB),
this.height,
random(0, this.width),
random(this.spawnC, this.spawnD),
random(0, 360),
random(30, 110)))
this.counter = 0
}
// remove the dead fireworks
if (this.fireworks.length > 2000) this.fireworks = this.fireworks.filter(firework => !firework.dead)
}
}
class Firework {
constructor(x, y, targetX, targetY, shade, offsprings) {
this.dead = false
this.offsprings = offsprings
this.x = x
this.y = y
this.targetX = targetX
this.targetY = targetY
this.shade = shade
this.history = []
}
update(delta) {
if (this.dead) return
let xDiff = this.targetX - this.x
let yDiff = this.targetY - this.y
if (Math.abs(xDiff) > 3 || Math.abs(yDiff) > 3) { // is still moving
this.x += xDiff * 2 * delta
this.y += yDiff * 2 * delta
this.history.push({
x: this.x,
y: this.y
})
if (this.history.length > 20) this.history.shift()
} else {
if (this.offsprings && !this.madeChilds) {
let babies = this.offsprings / 2
for (let i = 0; i < babies; i++) {
let targetX = this.x + this.offsprings * Math.cos(PI2 * i / babies) | 0
let targetY = this.y + this.offsprings * Math.sin(PI2 * i / babies) | 0
birthday.fireworks.push(new Firework(this.x, this.y, targetX,
targetY, this.shade, 0))
}
}
this.madeChilds = true
this.history.shift()
}
if (this.history.length === 0) this.dead = true
else if (this.offsprings) {
for (let i = 0; this.history.length > i; i++) {
let point = this.history[i]
ctx.beginPath()
ctx.fillStyle = 'hsl(' + this.shade + ',100%,' + i + '%)'
ctx.arc(point.x, point.y, 1, 0, PI2, false)
ctx.fill()
}
} else {
ctx.beginPath()
ctx.fillStyle = 'hsl(' + this.shade + ',100%,50%)'
ctx.arc(this.x, this.y, 1, 0, PI2, false)
ctx.fill()
}
}
}
let canvas = document.getElementById('birthday')
let ctx = canvas.getContext('2d')
let then = timestamp()
let birthday = new Birthday
window.onresize = () => birthday.resize()
document.onclick = evt => birthday.onClick(evt)
document.ontouchstart = evt => birthday.onClick(evt)
;(function loop(){
requestAnimationFrame(loop)
let now = timestamp()
let delta = now - then
then = now
birthday.update(delta / 1000)
})()
</script>
</body>
</html>