// initialize jwplayer var playerInstance = jwplayer('player');// player dom elements var playerContainerEl = document.querySelector('.player-container');// returns video player position from top of document function getElementOffsetTop(el) { var boundingClientRect = el.getBoundingClientRect(); var bodyEl = document.body; var docEl = document.documentElement; var scrollTop = window.pageYOffset || docEl.scrollTop || bodyEl.scrollTop; var clientTop = docEl.clientTop || bodyEl.clientTop || 0; return Math.round(boundingClientRect.top + scrollTop - clientTop); }// returns the current y scroll position function getScrollTop() { var docEl = document.documentElement; return (window.pageYOffset || docEl.scrollTop) - (docEl.clientTop || 0); }// configure jwplayer instance playerInstance.setup({ autostart: true, playlist: 'https://cdn.jwplayer.com/v2/playlists/mYdavspX', primary: 'html5', setFullscreen: true, width: '100%' });// when jwplayer instance is ready playerInstance.on('ready', function() { var config = playerInstance.getConfig(); var utils = playerInstance.utils; // get height of player element var playerHeight = config.containerHeight; // flag determining whether close has been clicked var closed = true; // CHANGED // flag determing whether player is playing var playing = false; // ADDED // eventhandler for when close button is being pressed document.getElementsByClassName('icon-close')[0].addEventListener('click', () => { closed = true; onScrollViewHandler(); }); playerInstance.on('play', function() { closed = false; playing = true; // ADDED }).on('pause', function () { playing = false; // ADDED }).on('adPlay', function() { closed = false; // ADDED playing = true; // ADDED }).on('adPause', function() { playing = false; // ADDED });// get player element position from top of document var playerOffsetTop = getElementOffsetTop(playerContainerEl);// set player container to match height of actual video element playerContainerEl.style.height = playerHeight + 'px';// below we handle window scroll event without killing performance function onScrollViewHandler() { var minimized = getScrollTop() >= playerOffsetTop;if (closed && minimized) { minimized = false; jwplayer().pause(); playing = false; // ADDED } else if (!minimized && !playing) { closed = true; // ADDED } utils.toggleClass(playerContainerEl, 'player-minimize', minimized); // update the player's size so the controls are adjusted playerInstance.resize(); }// namespace for whether or not we are waiting for setTimeout() to finish var isScrollTimeout = false;// window onscroll event handler window.onscroll = function() { // skip if we're waiting on a scroll update timeout to finish if (isScrollTimeout) return; // flag that a new timeout will begin isScrollTimeout = true; // otherwise, call scroll event view handler onScrollViewHandler(); // set new timeout setTimeout(function() { // reset timeout flag to false (no longer waiting) isScrollTimeout = false; }, 80); };});

No easy mode here…

Introduced as a post-credits easter egg in World at War, over the decade Call of Duty Zombies has steamrolled into a lore-filled, feature rich mode with trivia stacked upon trivia.

Sure, you can name the four original characters, prices of perks, and maybe a quote or two, but that’s just child’s play. This quiz is going to truly test your Treyarch Zombies knowledge.

With over 20 maps to pull from, get ready to access parts of your memory that you haven’t thought about since 2012. How well do really know Nacht der Untoten? What do perk-a-colas taste like? Was there any crossover between Zombies and Campaign?

Take this master challenge quiz right now to prove if you truly are a Treyarch Zombies expert!

How’d you do? Let us know in the comments below and be sure to share it with your friends to test their not-yet-rotten brains!

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Brooklyn boy, born and raised. @MrBrawl96 everywhere on the World Wide Web.