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behavior-konami.js
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behavior-konami.js
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/**
* @provides javelin-behavior-konami
* @requires javelin-behavior
* javelin-stratcom
*/
JX.behavior('konami', function() {
var sequence = [ 38, 38, 40, 40, 37, 39, 37, 39, 66, 65, 13 ];
var seen = [];
JX.Stratcom.listen('keyup', null, function(e) {
if (!sequence)
return;
seen.push(e.getRawEvent().keyCode);
while (seen.length) {
var mismatch = false;
for (var i = 0; i < seen.length; ++i) {
if (seen[i] != sequence[i]) {
mismatch = true;
break;
}
}
if (!mismatch) {
break;
}
seen.shift();
}
if (seen.length == sequence.length) {
sequence = seen = null;
activate();
}
});
var prefixes = { '-webkit-': 1, '-moz-': 1, '-o-': 1, '-ms-': 1, '': 1 };
var body_rule, all_rule, top_rule;
function generateCSS(selector, props) {
var ret = selector + '{';
for (var key in props) {
ret += key + ':' + props[key] + ';';
}
return ret + '}';
}
function generateAllCSS(selector, props) {
var more_props = {};
for (var key in props) {
for (var prefix in prefixes) {
more_props[prefix + key] = props[key];
}
}
return generateCSS(selector, more_props);
}
function modifyCSS(rule, key, value) {
rule.setProperty(key, value, '');
}
function modifyAllCSS(rule, key, value) {
for (var prefix in prefixes) {
modifyCSS(rule, prefix + key, value);
}
}
var characters = [ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 ];
for (var i = 0x3041; i < 0x3097; ++i) {
characters.push(String.fromCharCode(i));
}
function spawnText() {
if (Math.random() > 0.10) {
return;
}
var text = [];
var length = parseInt(Math.random() * 16) + 10;
for (var i = 0; i < length; ++i) {
text.push(characters[parseInt(Math.random() * characters.length)]);
}
text = text.join(' ');
var element = document.createElement('div');
var z = Math.random() * 400 - 40;
element.className = 'matrix';
element.textContent = text;
modifyCSS(element.style, 'left',
Math.random() * document.body.clientWidth + 'px');
modifyAllCSS(element.style, 'transform',
'translateZ(' + z + 'px) rotateY(180deg)');
document.body.appendChild(element);
var height = element.clientHeight;
var y = -height;
modifyCSS(element.style, 'top', y + 'px');
var timer = setInterval(function() {
y += 5;
modifyCSS(element.style, 'top', y + 'px');
if (y > document.body.clientHeight) {
clearInterval(timer);
document.body.removeChild(element);
}
}, 20);
}
function spawnCat() {
if (Math.random() > 0.05) {
return;
}
var element = document.createElement('img');
var z = Math.random() * 400 - 40;
element.setAttribute('src', '/rsrc/image/nyan.gif');
element.className = 'nyan';
modifyCSS(element.style, 'top',
Math.random() * document.body.clientHeight + 'px');
modifyAllCSS(element.style, 'transform', 'translateZ(' + z + 'px)');
document.body.appendChild(element);
var width = Math.random() * 200 + 100;
var x = -width;
modifyCSS(element.style, 'width', width + 'px');
modifyCSS(element.style, 'left', x + 'px');
var timer = setInterval(function() {
x += 3;
modifyCSS(element.style, 'left', x + 'px');
if (x > document.body.clientWidth) {
clearInterval(timer);
document.body.removeChild(element);
}
}, 20);
}
var counter = 0;
var body_translate = '';
var body_rotate = '';
function zoomOut() {
if (counter >= 20) {
return;
}
++counter;
body_translate = 'translateZ(' + (-16 * counter) + 'px)';
modifyAllCSS(body_rule, 'transform', body_translate + ' ' + body_rotate);
modifyAllCSS(all_rule, 'transform', 'translateZ(' + counter + 'px)');
modifyAllCSS(top_rule, 'transform', 'translateZ(' + (counter * 15) + 'px)');
modifyCSS(document.documentElement.style, 'background-color',
'rgba(0,0,0,' + (counter / 20) + ')', '');
modifyCSS(document.getElementById('base-page').style, 'background-color',
'rgba(255,255,255,' + (1 - counter / 20) + ')', '');
setTimeout(zoomOut, 20 + counter * 3);
}
function activate() {
var matrix = document.createElement('style');
matrix.textContent = [
generateAllCSS('html', {
perspective: '500px'
}),
generateAllCSS('body', {
transform: 'translateZ(0px)'
}),
generateAllCSS('*', {
'transform-style': 'preserve-3d'
}),
generateAllCSS('body>[class|=jx],.phabricator-notification-menu', {
transform: 'translateZ(0px)'
}),
generateCSS('.matrix', {
position: 'fixed',
width: '0',
'font-size': '20pt',
color: 'chartreuse',
'text-shadow': '0 0 1em limegreen,0 0 1em limegreen,0 0 1em limegreen'
}),
generateCSS('.nyan', {
position: 'fixed'
})
].join('\n');
document.head.appendChild(matrix);
body_rule = matrix.sheet.cssRules[1].style;
all_rule = matrix.sheet.cssRules[2].style;
top_rule = matrix.sheet.cssRules[3].style;
document.addEventListener('mousemove', function(e) {
var x = e.screenX / window.innerWidth - 0.5;
var y = -e.screenY / window.innerHeight + 0.5;
body_rotate = 'rotateY(' + x + 'rad) rotateX(' + y + 'rad)';
modifyAllCSS(body_rule, 'transform', body_translate + ' ' + body_rotate);
}, false);
zoomOut();
setInterval(spawnText, 100);
setInterval(spawnCat, 250);
}
});

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