easter_eggs.js

function show_snow () {
	var duration = 15 * 1000;
	var animationEnd = Date.now() + duration;
	var skew = 1;

	function randomInRange(min, max) {
		return Math.random() * (max - min) + min;
	}

	(function frame() {
		var timeLeft = animationEnd - Date.now();
		var ticks = Math.max(200, 500 * (timeLeft / duration));
		skew = Math.max(0.8, skew - 0.001);

		confetti({
			particleCount: 1,
			startVelocity: 0,
			ticks: ticks,
			origin: {
				x: Math.random(),
				// since particles fall down, skew start toward the top
				y: (Math.random() * skew) - 0.2
			},
			colors: ["#ffffff"],
			shapes: ["circle"],
			gravity: randomInRange(0.4, 0.6),
			scalar: randomInRange(0.4, 1),
			drift: randomInRange(-0.4, 0.4)
		});

		if (timeLeft > 0) {
			requestAnimationFrame(frame);
		}
	}());
}

function _confetti () {
	function confetti_a () {
		confetti({
			particleCount: 100,
			spread: 70,
			origin: { y: 0.6 }
		});
	}

	function confetti_b () {
		function randomInRange(min, max) {
			return Math.random() * (max - min) + min;
		}

		confetti({
			angle: randomInRange(55, 125),
			spread: randomInRange(50, 70),
			particleCount: randomInRange(50, 100),
			origin: { y: 0.6 }
		});
	}

	function confetti_c() {
		var count = 200;
		var defaults = {
			origin: { y: 0.7 }
		};

		function fire(particleRatio, opts) {
			confetti(Object.assign({}, defaults, opts, {
				particleCount: Math.floor(count * particleRatio)
			}));
		}

		fire(0.25, {
			spread: 26,
			startVelocity: 55,
		});
		fire(0.2, {
			spread: 60,
		});
		fire(0.35, {
			spread: 100,
			decay: 0.91,
			scalar: 0.8
		});
		fire(0.1, {
			spread: 120,
			startVelocity: 25,
			decay: 0.92,
			scalar: 1.2
		});
		fire(0.1, {
			spread: 120,
			startVelocity: 45,
		});
	}

	function confetti_d () {
		var defaults = {
			spread: 360,
			ticks: 50,
			gravity: 0,
			decay: 0.94,
			startVelocity: 30,
			shapes: ["star"],
			colors: ["FFE400", "FFBD00", "E89400", "FFCA6C", "FDFFB8"]
		};

		function shoot() {
			confetti({
				...defaults,
				particleCount: 40,
				scalar: 1.2,
				shapes: ["star"]
			});

			confetti({
				...defaults,
				particleCount: 10,
				scalar: 0.75,
				shapes: ["circle"]
			});
		}

		setTimeout(shoot, 0);
		setTimeout(shoot, 100);
		setTimeout(shoot, 200);
	}

	async function confetti_e () {
		$(".fireworks-container").show();
		in_fireworks = true;
		var fw = new Fireworks(document.querySelector(".fireworks-container"));
		fw.start();
		await delay(10000);
		fw.stop();
		in_fireworks = false;
		$(".fireworks-container").html("").hide();
	}

	const confettiFunctions = [confetti_a, confetti_b, confetti_c, confetti_d, confetti_e];
	const randomIndex = Math.floor(Math.random() * confettiFunctions.length);
	const randomConfettiFunction = confettiFunctions[randomIndex];

	try {
		randomConfettiFunction();
	} catch (error) {
		console.warn(`Error executing ${randomConfettiFunction.name}: ${error}`);
	}
}

function _next(value, multiple) {
	return Math.ceil(value / multiple) * multiple;
}

async function easter_egg_fireworks (force=0) {
	if(in_fireworks) {
		return;
	}

	fireworks_counter++;

	if(force || fireworks_counter) {
		if(fireworks_counter % 10 == 0) {
			_confetti();
		}

		if(fireworks_counter % 50 == 0) {
			setAuroraBackground();
		}
	}

	if(fireworks_counter < 50) {
		log(`${fireworks_counter}/${_next(fireworks_counter, 10)}/${_next(fireworks_counter, 50)}`);
	} else {
		log(`${fireworks_counter}/${_next(fireworks_counter, 10)}`);
	}
}