105 lines
3.4 KiB
JavaScript
105 lines
3.4 KiB
JavaScript
const snowstorm = true; // enable/disable snowstorm
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const snowflakesCount = 500; // count of snowflakes (recommended values: 300-600)
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const snowFallSpeed = 4; // speed of snowfall (recommended values: 0-8)
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let msgPrinted = false; // flag to prevent multiple console messages
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// function to check and control the snowstorm
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function toggleSnowstorm() {
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const snowstormContainer = document.querySelector('.snowstorm');
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if (!snowstormContainer) return;
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const videoPlayer = document.querySelector('.videoPlayerContainer');
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const trailerPlayer = document.querySelector('.youtubePlayerContainer');
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const isDashboard = document.body.classList.contains('dashboardDocument');
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const hasUserMenu = document.querySelector('#app-user-menu');
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// hide snowstorm if video/trailer player is active or dashboard is visible
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if (videoPlayer || trailerPlayer || isDashboard || hasUserMenu) {
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snowstormContainer.style.display = 'none'; // hide snowstorm
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if (!msgPrinted) {
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console.log('Snowstorm hidden');
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msgPrinted = true;
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}
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} else {
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snowstormContainer.style.display = 'block'; // show snowstorm
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if (msgPrinted) {
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console.log('Snowstorm visible');
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msgPrinted = false;
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}
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}
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}
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// observe changes in the DOM
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const observer = new MutationObserver(toggleSnowstorm);
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// start observation
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observer.observe(document.body, {
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childList: true, // observe adding/removing of child elements
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subtree: true, // observe all levels of the DOM tree
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attributes: true // observe changes to attributes (e.g. class changes)
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});
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function createSnowstorm() {
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const container = document.querySelector('.snowstorm') || document.createElement("div");
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if (!document.querySelector('.snowstorm')) {
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container.className = "snowstorm";
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container.setAttribute("aria-hidden", "true");
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document.body.appendChild(container);
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}
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const windowWidth = window.innerWidth;
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const windowHeight = window.innerHeight;
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for (let i = 0; i < snowflakesCount; i++) {
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const snowflake = document.createElement('div');
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snowflake.classList.add('snowflake');
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// random size
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const size = Math.random() * 4 + 1;
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snowflake.style.width = `${size}px`;
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snowflake.style.height = `${size}px`;
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// random starting position
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snowflake.style.left = `${Math.random() * windowWidth}px`;
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snowflake.style.top = `${Math.random() * windowHeight}px`;
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container.appendChild(snowflake);
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animateSnowflake(snowflake);
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}
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}
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function animateSnowflake(snowflake) {
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// animation parameters
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const fallSpeed = Math.random() * snowFallSpeed + 2;
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const horizontalWind = Math.random() * 4 - 2;
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const verticalVariation = Math.random() * 4 - 1;
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function fall() {
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const currentTop = parseFloat(snowflake.style.top || 0);
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const currentLeft = parseFloat(snowflake.style.left || 0);
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snowflake.style.top = `${currentTop + fallSpeed + verticalVariation}px`;
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snowflake.style.left = `${currentLeft + horizontalWind}px`;
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// if snowflake is out of the window, reset its position
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if (currentTop > window.innerHeight) {
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snowflake.style.top = '0px';
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snowflake.style.left = `${Math.random() * window.innerWidth}px`;
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}
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requestAnimationFrame(fall);
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}
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fall();
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}
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// initialize snowstorm after the DOM is loaded
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document.addEventListener('DOMContentLoaded', () => {
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if (!snowstorm) return; // exit if snowstorm is disabled
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createSnowstorm();
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});
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