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<h1 class="title">logic.js Example File</h1>
<span class="subtitle">demos/maroon/content/logic.js</span>
<!-- $$$demos/maroon/content/logic.js-description -->
<div class="descr"> <a name="details"></a>
<pre class="js">
<span class="comment">/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
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**
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****************************************************************************/</span>
.pragma library // Shared game state
.import QtQuick 2.0 as QQ
// Game Stuff
var <span class="name">gameState</span> <span class="comment">// Local reference</span>
<span class="keyword">function</span> <span class="name">getGameState</span>() { <span class="keyword">return</span> <span class="name">gameState</span>; }
var <span class="name">towerData</span> = [ <span class="comment">// Name and cost, stats are in the delegate per instance</span>
{ "name": <span class="string">"Melee"</span>, "cost": <span class="number">20</span> },
{ "name": <span class="string">"Ranged"</span>, "cost": <span class="number">50</span> },
{ "name": <span class="string">"Bomb"</span>, "cost": <span class="number">75</span> },
{ "name": <span class="string">"Factory"</span>, "cost": <span class="number">25</span> }
]
var <span class="name">waveBaseData</span> = [<span class="number">300</span>, <span class="number">290</span>, <span class="number">280</span>, <span class="number">270</span>, <span class="number">220</span>, <span class="number">180</span>, <span class="number">160</span>, <span class="number">80</span>, <span class="number">80</span>, <span class="number">80</span>, <span class="number">30</span>, <span class="number">30</span>, <span class="number">30</span>, <span class="number">30</span>];
var <span class="name">waveData</span> = [];
var <span class="name">towerComponents</span> = new <span class="name">Array</span>(<span class="name">towerData</span>.<span class="name">length</span>);
var <span class="name">mobComponent</span> = <span class="name">Qt</span>.<span class="name">createComponent</span>(<span class="string">"mobs/MobBase.qml"</span>);
<span class="keyword">function</span> <span class="name">endGame</span>()
{
<span class="name">gameState</span>.<span class="name">gameRunning</span> <span class="operator">=</span> <span class="number">false</span>;
<span class="name">gameState</span>.<span class="name">gameOver</span> <span class="operator">=</span> <span class="number">true</span>;
<span class="keyword">for</span> (<span class="keyword">var</span> <span class="name">i</span> = <span class="number">0</span>; <span class="name">i</span> <span class="operator"><</span> <span class="name">gameState</span>.<span class="name">cols</span>; i++) {
<span class="keyword">for</span> (<span class="keyword">var</span> <span class="name">j</span> = <span class="number">0</span>; <span class="name">j</span> <span class="operator"><</span> <span class="name">gameState</span>.<span class="name">rows</span>; j++) {
<span class="keyword">if</span> (<span class="name">gameState</span>.<span class="name">towers</span>[<span class="name">towerIdx</span>(<span class="name">i</span>, <span class="name">j</span>)]) {
<span class="name">gameState</span>.<span class="name">towers</span>[<span class="name">towerIdx</span>(<span class="name">i</span>, <span class="name">j</span>)].<span class="name">destroy</span>();
<span class="name">gameState</span>.<span class="name">towers</span>[<span class="name">towerIdx</span>(<span class="name">i</span>, <span class="name">j</span>)] <span class="operator">=</span> <span class="number">null</span>;
}
}
<span class="keyword">for</span> (<span class="keyword">var</span> <span class="name">j</span> in <span class="name">gameState</span>.<span class="name">mobs</span>[<span class="name">i</span>])
<span class="name">gameState</span>.<span class="name">mobs</span>[<span class="name">i</span>][<span class="name">j</span>].<span class="name">destroy</span>();
<span class="name">gameState</span>.<span class="name">mobs</span>[<span class="name">i</span>].<span class="name">splice</span>(<span class="number">0</span>,<span class="name">gameState</span>.<span class="name">mobs</span>[<span class="name">i</span>].<span class="name">length</span>); <span class="comment">//Leaves queue reusable</span>
}
}
<span class="keyword">function</span> <span class="name">startGame</span>(<span class="name">gameCanvas</span>)
{
<span class="name">waveData</span> <span class="operator">=</span> new <span class="name">Array</span>();
<span class="keyword">for</span> (<span class="keyword">var</span> <span class="name">i</span> in <span class="name">waveBaseData</span>)
<span class="name">waveData</span>[<span class="name">i</span>] <span class="operator">=</span> <span class="name">waveBaseData</span>[<span class="name">i</span>];
<span class="name">gameState</span>.<span class="name">freshState</span>();
<span class="keyword">for</span> (<span class="keyword">var</span> <span class="name">i</span> = <span class="number">0</span>; <span class="name">i</span> <span class="operator"><</span> <span class="name">gameCanvas</span>.<span class="name">cols</span>; i++) {
<span class="keyword">for</span> (<span class="keyword">var</span> <span class="name">j</span> = <span class="number">0</span>; <span class="name">j</span> <span class="operator"><</span> <span class="name">gameCanvas</span>.<span class="name">rows</span>; j++)
<span class="name">gameState</span>.<span class="name">towers</span>[<span class="name">towerIdx</span>(<span class="name">i</span>, <span class="name">j</span>)] <span class="operator">=</span> <span class="number">null</span>;
<span class="name">gameState</span>.<span class="name">mobs</span>[<span class="name">i</span>] <span class="operator">=</span> new <span class="name">Array</span>();
}
<span class="name">gameState</span>.<span class="name">towers</span>[<span class="name">towerIdx</span>(<span class="number">0</span>, <span class="number">0</span>)] <span class="operator">=</span> <span class="name">newTower</span>(<span class="number">3</span>, <span class="number">0</span>, <span class="number">0</span>);<span class="comment">//Start with a starfish in the corner</span>
<span class="name">gameState</span>.<span class="name">gameRunning</span> <span class="operator">=</span> <span class="number">true</span>;
<span class="name">gameState</span>.<span class="name">gameOver</span> <span class="operator">=</span> <span class="number">false</span>;
}
<span class="keyword">function</span> <span class="name">newGameState</span>(<span class="name">gameCanvas</span>)
{
<span class="keyword">for</span> (<span class="keyword">var</span> <span class="name">i</span> = <span class="number">0</span>; <span class="name">i</span> <span class="operator"><</span> <span class="name">towerComponents</span>.<span class="name">length</span>; i++) {
<span class="name">towerComponents</span>[<span class="name">i</span>] <span class="operator">=</span> <span class="name">Qt</span>.<span class="name">createComponent</span>(<span class="string">"towers/"</span> <span class="operator">+</span> <span class="name">towerData</span>[<span class="name">i</span>].<span class="name">name</span> <span class="operator">+</span> <span class="string">".qml"</span>);
<span class="keyword">if</span> (<span class="name">towerComponents</span>[<span class="name">i</span>].<span class="name">status</span> <span class="operator">==</span> <span class="name">QQ</span>.<span class="name">Component</span>.<span class="name">Error</span>) {
<span class="name">gameCanvas</span>.<span class="name">errored</span> <span class="operator">=</span> <span class="number">true</span>;
<span class="name">gameCanvas</span>.<span class="name">errorString</span> <span class="operator">+=</span> <span class="string">"Loading Tower "</span> <span class="operator">+</span> <span class="name">towerData</span>[<span class="name">i</span>].<span class="name">name</span> <span class="operator">+</span> <span class="string">"\n"</span> <span class="operator">+</span> (<span class="name">towerComponents</span>[<span class="name">i</span>].<span class="name">errorString</span>());
<span class="name">console</span>.<span class="name">log</span>(<span class="name">towerComponents</span>[<span class="name">i</span>].<span class="name">errorString</span>());
}
}
<span class="name">gameState</span> <span class="operator">=</span> <span class="name">gameCanvas</span>;
<span class="name">gameState</span>.<span class="name">freshState</span>();
<span class="name">gameState</span>.<span class="name">towers</span> <span class="operator">=</span> new <span class="name">Array</span>(<span class="name">gameCanvas</span>.<span class="name">rows</span> <span class="operator">*</span> <span class="name">gameCanvas</span>.<span class="name">cols</span>);
<span class="name">gameState</span>.<span class="name">mobs</span> <span class="operator">=</span> new <span class="name">Array</span>(<span class="name">gameCanvas</span>.<span class="name">cols</span>);
<span class="keyword">return</span> <span class="name">gameState</span>;
}
<span class="keyword">function</span> <span class="name">row</span>(<span class="name">y</span>)
{
<span class="keyword">return</span> <span class="name">Math</span>.<span class="name">floor</span>(<span class="name">y</span> <span class="operator">/</span> <span class="name">gameState</span>.<span class="name">squareSize</span>);
}
<span class="keyword">function</span> <span class="name">col</span>(<span class="name">x</span>)
{
<span class="keyword">return</span> <span class="name">Math</span>.<span class="name">floor</span>(<span class="name">x</span> <span class="operator">/</span> <span class="name">gameState</span>.<span class="name">squareSize</span>);
}
<span class="keyword">function</span> <span class="name">towerIdx</span>(<span class="name">x</span>, y)
{
<span class="keyword">return</span> <span class="name">y</span> <span class="operator">+</span> (<span class="name">x</span> <span class="operator">*</span> <span class="name">gameState</span>.<span class="name">rows</span>);
}
<span class="keyword">function</span> <span class="name">newMob</span>(<span class="name">col</span>)
{
var <span class="name">ret</span> = <span class="name">mobComponent</span>.<span class="name">createObject</span>(<span class="name">gameState</span>.<span class="name">canvas</span>,
{ "col" : <span class="name">col</span>,
"speed" : (<span class="name">Math</span>.<span class="name">min</span>(<span class="number">2.0</span>, <span class="number">0.10</span> <span class="operator">*</span> (<span class="name">gameState</span>.<span class="name">waveNumber</span> <span class="operator">+</span> <span class="number">1</span>))),
"y" : <span class="name">gameState</span>.<span class="name">canvas</span>.<span class="name">height</span> });
<span class="name">gameState</span>.<span class="name">mobs</span>[<span class="name">col</span>].<span class="name">push</span>(<span class="name">ret</span>);
<span class="keyword">return</span> <span class="name">ret</span>;
}
<span class="keyword">function</span> <span class="name">newTower</span>(<span class="name">type</span>, row, col)
{
var <span class="name">ret</span> = <span class="name">towerComponents</span>[<span class="name">type</span>].<span class="name">createObject</span>(<span class="name">gameState</span>.<span class="name">canvas</span>);
<span class="name">ret</span>.<span class="name">row</span> <span class="operator">=</span> <span class="name">row</span>;
<span class="name">ret</span>.<span class="name">col</span> <span class="operator">=</span> <span class="name">col</span>;
<span class="name">ret</span>.<span class="name">fireCounter</span> <span class="operator">=</span> <span class="name">ret</span>.<span class="name">rof</span>;
<span class="name">ret</span>.<span class="name">spawn</span>();
<span class="keyword">return</span> <span class="name">ret</span>;
}
<span class="keyword">function</span> <span class="name">buildTower</span>(<span class="name">type</span>, x, y)
{
<span class="keyword">if</span> (<span class="name">gameState</span>.<span class="name">towers</span>[<span class="name">towerIdx</span>(<span class="name">x</span>,<span class="name">y</span>)] <span class="operator">!=</span> <span class="number">null</span>) {
<span class="keyword">if</span> (<span class="name">type</span> <span class="operator"><=</span> <span class="number">0</span>) {
<span class="name">gameState</span>.<span class="name">towers</span>[<span class="name">towerIdx</span>(<span class="name">x</span>,<span class="name">y</span>)].<span class="name">sell</span>();
<span class="name">gameState</span>.<span class="name">towers</span>[<span class="name">towerIdx</span>(<span class="name">x</span>,<span class="name">y</span>)] <span class="operator">=</span> <span class="number">null</span>;
}
} <span class="keyword">else</span> {
<span class="keyword">if</span> (<span class="name">gameState</span>.<span class="name">coins</span> <span class="operator"><</span> <span class="name">towerData</span>[<span class="name">type</span> <span class="operator">-</span> <span class="number">1</span>].<span class="name">cost</span>)
<span class="keyword">return</span>;
<span class="name">gameState</span>.<span class="name">towers</span>[<span class="name">towerIdx</span>(<span class="name">x</span>, <span class="name">y</span>)] <span class="operator">=</span> <span class="name">newTower</span>(<span class="name">type</span> <span class="operator">-</span> <span class="number">1</span>, <span class="name">y</span>, <span class="name">x</span>);
<span class="name">gameState</span>.<span class="name">coins</span> <span class="operator">-=</span> <span class="name">towerData</span>[<span class="name">type</span> <span class="operator">-</span> <span class="number">1</span>].<span class="name">cost</span>;
}
}
<span class="keyword">function</span> <span class="name">killMob</span>(<span class="name">col</span>, mob)
{
<span class="keyword">if</span> (!<span class="name">mob</span>)
<span class="keyword">return</span>;
var <span class="name">idx</span> = <span class="name">gameState</span>.<span class="name">mobs</span>[<span class="name">col</span>].<span class="name">indexOf</span>(<span class="name">mob</span>);
<span class="keyword">if</span> (<span class="name">idx</span> <span class="operator">==</span> -<span class="number">1</span> <span class="operator">||</span> !<span class="name">mob</span>.<span class="name">hp</span>)
<span class="keyword">return</span>;
<span class="name">mob</span>.<span class="name">hp</span> <span class="operator">=</span> <span class="number">0</span>;
<span class="name">mob</span>.<span class="name">die</span>();
<span class="name">gameState</span>.<span class="name">mobs</span>[<span class="name">col</span>].<span class="name">splice</span>(<span class="name">idx</span>,<span class="number">1</span>);
}
<span class="keyword">function</span> <span class="name">killTower</span>(<span class="name">row</span>, col)
{
var <span class="name">tower</span> = <span class="name">gameState</span>.<span class="name">towers</span>[<span class="name">towerIdx</span>(<span class="name">col</span>, <span class="name">row</span>)];
<span class="keyword">if</span> (!<span class="name">tower</span>)
<span class="keyword">return</span>;
<span class="name">tower</span>.<span class="name">hp</span> <span class="operator">=</span> <span class="number">0</span>;
<span class="name">tower</span>.<span class="name">die</span>();
<span class="name">gameState</span>.<span class="name">towers</span>[<span class="name">towerIdx</span>(<span class="name">col</span>, <span class="name">row</span>)] <span class="operator">=</span> <span class="number">null</span>;
}
<span class="keyword">function</span> <span class="name">tick</span>()
{
<span class="keyword">if</span> (!<span class="name">gameState</span>.<span class="name">gameRunning</span>)
<span class="keyword">return</span>;
<span class="comment">// Spawn</span>
<span class="name">gameState</span>.<span class="name">waveProgress</span> <span class="operator">+=</span> <span class="number">1</span>;
var <span class="name">i</span> = <span class="name">gameState</span>.<span class="name">waveProgress</span>;
var <span class="name">j</span> = <span class="number">0</span>;
<span class="keyword">while</span> (<span class="name">i</span> <span class="operator">></span> <span class="number">0</span> <span class="operator">&&</span> <span class="name">j</span> <span class="operator"><</span> <span class="name">waveData</span>.<span class="name">length</span>)
<span class="name">i</span> <span class="operator">-=</span> <span class="name">waveData</span>[j++];
<span class="keyword">if</span> ( <span class="name">i</span> <span class="operator">==</span> <span class="number">0</span> ) <span class="comment">// Spawn a mob</span>
<span class="name">newMob</span>(<span class="name">Math</span>.<span class="name">floor</span>(<span class="name">Math</span>.<span class="name">random</span>() <span class="operator">*</span> <span class="name">gameState</span>.<span class="name">cols</span>));
<span class="keyword">if</span> ( <span class="name">j</span> <span class="operator">==</span> <span class="name">waveData</span>.<span class="name">length</span> ) { <span class="comment">// Next Wave</span>
<span class="name">gameState</span>.<span class="name">waveNumber</span> <span class="operator">+=</span> <span class="number">1</span>;
<span class="name">gameState</span>.<span class="name">waveProgress</span> <span class="operator">=</span> <span class="number">0</span>;
var <span class="name">waveModifier</span> = <span class="number">10</span>; <span class="comment">// Constant governing how much faster the next wave is to spawn (not fish speed)</span>
<span class="keyword">for</span> (<span class="keyword">var</span> <span class="name">k</span> in <span class="name">waveData</span> ) <span class="comment">// Slightly faster</span>
<span class="keyword">if</span> (<span class="name">waveData</span>[<span class="name">k</span>] <span class="operator">></span> <span class="name">waveModifier</span>)
<span class="name">waveData</span>[<span class="name">k</span>] <span class="operator">-=</span> <span class="name">waveModifier</span>;
}
<span class="comment">// Towers Attack</span>
<span class="keyword">for</span> (<span class="keyword">var</span> <span class="name">j</span> in <span class="name">gameState</span>.<span class="name">towers</span>) {
var <span class="name">tower</span> = <span class="name">gameState</span>.<span class="name">towers</span>[<span class="name">j</span>];
<span class="keyword">if</span> (<span class="name">tower</span> <span class="operator">==</span> <span class="number">null</span>)
<span class="keyword">continue</span>;
<span class="keyword">if</span> (<span class="name">tower</span>.<span class="name">fireCounter</span> <span class="operator">></span> <span class="number">0</span>) {
<span class="name">tower</span>.<span class="name">fireCounter</span> <span class="operator">-=</span> <span class="number">1</span>;
<span class="keyword">continue</span>;
}
var <span class="name">column</span> = <span class="name">tower</span>.<span class="name">col</span>;
<span class="keyword">for</span> (<span class="keyword">var</span> <span class="name">k</span> in <span class="name">gameState</span>.<span class="name">mobs</span>[<span class="name">column</span>]) {
var <span class="name">conflict</span> = <span class="name">gameState</span>.<span class="name">mobs</span>[<span class="name">column</span>][<span class="name">k</span>];
<span class="keyword">if</span> (<span class="name">conflict</span>.<span class="name">y</span> <span class="operator"><=</span> <span class="name">gameState</span>.<span class="name">canvas</span>.<span class="name">height</span> <span class="operator">&&</span> <span class="name">conflict</span>.<span class="name">y</span> <span class="operator">+</span> <span class="name">conflict</span>.<span class="name">height</span> <span class="operator">></span> <span class="name">tower</span>.<span class="name">y</span>
<span class="operator">&&</span> <span class="name">conflict</span>.<span class="name">y</span> <span class="operator">-</span> ((<span class="name">tower</span>.<span class="name">row</span> <span class="operator">+</span> <span class="number">1</span>) <span class="operator">*</span> <span class="name">gameState</span>.<span class="name">squareSize</span>) <span class="operator"><</span> <span class="name">gameState</span>.<span class="name">squareSize</span> <span class="operator">*</span> <span class="name">tower</span>.<span class="name">range</span>) { <span class="comment">// In Range</span>
<span class="name">tower</span>.<span class="name">fire</span>();
<span class="name">tower</span>.<span class="name">fireCounter</span> <span class="operator">=</span> <span class="name">tower</span>.<span class="name">rof</span>;
<span class="name">conflict</span>.<span class="name">hit</span>(<span class="name">tower</span>.<span class="name">damage</span>);
}
}
<span class="comment">// Income</span>
<span class="keyword">if</span> (<span class="name">tower</span>.<span class="name">income</span>) {
<span class="name">gameState</span>.<span class="name">coins</span> <span class="operator">+=</span> <span class="name">tower</span>.<span class="name">income</span>;
<span class="name">tower</span>.<span class="name">fire</span>();
<span class="name">tower</span>.<span class="name">fireCounter</span> <span class="operator">=</span> <span class="name">tower</span>.<span class="name">rof</span>;
}
}
<span class="comment">// Mobs move</span>
<span class="keyword">for</span> (<span class="keyword">var</span> <span class="name">i</span> = <span class="number">0</span>; <span class="name">i</span> <span class="operator"><</span> <span class="name">gameState</span>.<span class="name">cols</span>; i++) {
<span class="keyword">for</span> (<span class="keyword">var</span> <span class="name">j</span> = <span class="number">0</span>; <span class="name">j</span> <span class="operator"><</span> <span class="name">gameState</span>.<span class="name">mobs</span>[<span class="name">i</span>].<span class="name">length</span>; j++) {
var <span class="name">mob</span> = <span class="name">gameState</span>.<span class="name">mobs</span>[<span class="name">i</span>][<span class="name">j</span>];
var <span class="name">newPos</span> = <span class="name">gameState</span>.<span class="name">mobs</span>[<span class="name">i</span>][<span class="name">j</span>].<span class="name">y</span> <span class="operator">-</span> <span class="name">gameState</span>.<span class="name">mobs</span>[<span class="name">i</span>][<span class="name">j</span>].<span class="name">speed</span>;
<span class="keyword">if</span> (<span class="name">newPos</span> <span class="operator"><</span> <span class="number">0</span>) {
<span class="name">gameState</span>.<span class="name">lives</span> <span class="operator">-=</span> <span class="number">1</span>;
<span class="name">killMob</span>(<span class="name">i</span>, <span class="name">mob</span>);
<span class="keyword">if</span> (<span class="name">gameState</span>.<span class="name">lives</span> <span class="operator"><=</span> <span class="number">0</span>)
<span class="name">endGame</span>();
<span class="keyword">continue</span>;
}
var <span class="name">conflict</span> = <span class="name">gameState</span>.<span class="name">towers</span>[<span class="name">towerIdx</span>(<span class="name">i</span>, <span class="name">row</span>(<span class="name">newPos</span>))];
<span class="keyword">if</span> (<span class="name">conflict</span> <span class="operator">!=</span> <span class="number">null</span>) {
<span class="keyword">if</span> (<span class="name">mob</span>.<span class="name">y</span> <span class="operator"><</span> <span class="name">conflict</span>.<span class="name">y</span> <span class="operator">+</span> <span class="name">gameState</span>.<span class="name">squareSize</span>)
<span class="name">gameState</span>.<span class="name">mobs</span>[<span class="name">i</span>][<span class="name">j</span>].<span class="name">y</span> <span class="operator">+=</span> <span class="name">gameState</span>.<span class="name">mobs</span>[<span class="name">i</span>][<span class="name">j</span>].<span class="name">speed</span> <span class="operator">*</span> <span class="number">10</span>; <span class="comment">// Moved inside tower, now hurry back out</span>
<span class="keyword">if</span> (<span class="name">mob</span>.<span class="name">fireCounter</span> <span class="operator">></span> <span class="number">0</span>) {
mob.fireCounter--;
} <span class="keyword">else</span> {
<span class="name">gameState</span>.<span class="name">mobs</span>[<span class="name">i</span>][<span class="name">j</span>].<span class="name">fire</span>();
<span class="name">conflict</span>.<span class="name">hp</span> <span class="operator">-=</span> <span class="name">mob</span>.<span class="name">damage</span>;
<span class="keyword">if</span> (<span class="name">conflict</span>.<span class="name">hp</span> <span class="operator"><=</span> <span class="number">0</span>)
<span class="name">killTower</span>(<span class="name">conflict</span>.<span class="name">row</span>, <span class="name">conflict</span>.<span class="name">col</span>);
<span class="name">mob</span>.<span class="name">fireCounter</span> <span class="operator">=</span> <span class="name">mob</span>.<span class="name">rof</span>;
}
} <span class="keyword">else</span> {
<span class="name">gameState</span>.<span class="name">mobs</span>[<span class="name">i</span>][<span class="name">j</span>].<span class="name">y</span> <span class="operator">=</span> <span class="name">newPos</span>;
}
}
}
}
</pre>
</div>
<!-- @@@demos/maroon/content/logic.js -->
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