Solution to level 19 in Untrusted: http://alex.nisnevich.com/untrusted/

http://alex.nisnevich.com/untrusted/ · GitHub

/**************************** * documentObjectMadness.js * **************************** * * I can't believe it! I can't believe you made it onto * Department of Theoretical Computation's web server! * YOU SHOULD HAVE BEEN DELETED! This shouldn't even be * possible! What the hell were the IT folks thinking? * * No matter. I still have the Algorithm. That's the * important part. The rest is just implementation, and * how hard could that be? * * Anyway you're not going to catch me now, my good Doctor. * After all, you're a tenured professor with a well-respected * history of research - you probably don't know jQuery! */

function objective(map) { return map.getDOM().find('.adversary').hasClass('drEval'); }

function startLevel(map) { var html = "<div class='container'>" + "<div style='width: 600px; height: 500px; background-color: white; font-size: 10px;'>" + "<center><h1>Department of Theoretical Computation</h1></center>" + "<hr />" + "<table border='0'><tr valign='top'>" + "<td><div id='face' /></td>" + "<td>" + "<h2 class=facultyName>Cornelius Eval</h2>" + "<h3>Associate Professor of Computer Science</h3>" + "<ul>" + "<li>BS, Mathematics, University of Manitoba</li>" + "<li>PhD, Theoretical Computation, <a href='http://www.mit.edu'>MIT</a></li>" + "</ul>" + "<h4>About me</h4>" + "<p>I am an associate professor of computer science, attached to the Department of " + "Theoretical Computation. My current research interests include the human-machine " + "interface, NP complete problems, and parallelized mesh mathematics.</p>" + "<p>I am also the current faculty advisor to the <a href=''>undergraduate Super Smash Bros. team</a>. " + "In my spare time I enjoy polka and dirtbiking. </p>" + "</td>" + "</tr></table>" +

"<div id='class_schedule'>" + "<h4>Class Schedule</h4>" + "<table>" + "<tr>" + "<th>Monday</th><th>Tuesday</th><th>Wednesday</th><th>Thursday</th><th>Friday</th>" + "</tr>" + "<tr>" + "<td>CS145 - Semicolons</td><td>Nothing Planned</td><td>CS145 - Semicolons</td><td>CS199 - Practical Theorycrafting </td><td>CS145 - Semicolons</td>" + "</tr>" + "</table>" + "</div>" + "<div id='loremIpsum'>" + "<h4>Lorem Ipsum</h4>" + "<blockquote>" + "<code>Neque porro quisquam est qui dolorem ipsum quia dolor sit amet, consectetur, adipisci " + "velit, sed quia nonnumquam eiusmodi tempora incidunt ut labore et dolore magnam aliquam quaerat " + "voluptatem.</code>" + "<footer>— " + "<cite>Cicero, De Finibus Bonorum et Malorum</cite>" + "</footer>" + "</blockquote>" + "</div>" + "</div></div>";

var $dom = $(html);

$dom.find('.facultyName').addClass('drEval'); $dom.find('cite').addClass('adversary');

function moveToParent(className) { var currentPosition = $dom.find('.' + className); if (currentPosition.parent().length > 0) { if (currentPosition.parent().hasClass('container')) { if (className === 'drEval') { map.getPlayer().killedBy('moving off the edge of the DOM'); } else { return false; } } else { currentPosition.parent().addClass(className); currentPosition.removeClass(className); map.updateDOM($dom); } } }

function moveToFirstChild(className) { var currentPosition = $dom.find('.' + className); if (currentPosition.children().length > 0) { currentPosition.children().first().addClass(className); currentPosition.removeClass(className); map.updateDOM($dom); } }

function moveToPreviousSibling(className) { var currentPosition = $dom.find('.' + className); if (currentPosition.prev().length > 0) { currentPosition.prev().addClass(className); currentPosition.removeClass(className); map.updateDOM($dom); } }

function moveToNextSibling(className) { var currentPosition = $dom.find('.' + className); if (currentPosition.next().length > 0) { currentPosition.next().addClass(className); currentPosition.removeClass(className); map.updateDOM($dom); } }

map.overrideKey('up', function () { moveToParent('drEval'); }); map.overrideKey('down', function () { moveToFirstChild('drEval'); }); map.overrideKey('left', function () { moveToPreviousSibling('drEval'); }); map.overrideKey('right', function () { moveToNextSibling('drEval'); });

map.defineObject('adversary', { 'type': 'dynamic', 'symbol': '@', 'color': 'red', 'behavior': function (me) { var move = Math.floor(Math.random() * 4) + 1; // 1, 2, 3, or 4 if (move == 1) { moveToParent('adversary'); } else if (move == 2) { moveToFirstChild('adversary'); } else if (move == 3) { moveToPreviousSibling('adversary'); } else if (move == 4) { moveToNextSibling('adversary'); } } });

map.placePlayer(1, 1); map.placeObject(map.getWidth() - 2, map.getHeight() - 2, 'adversary');

map.createFromDOM($dom); }