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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>JSDoc: Class: EntityBoxCamera</title>
<script src="scripts/prettify/prettify.js"> </script>
<script src="scripts/prettify/lang-css.js"> </script>
<!--[if lt IE 9]>
<script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
<link type="text/css" rel="stylesheet" href="styles/prettify-tomorrow.css">
<link type="text/css" rel="stylesheet" href="styles/jsdoc-default.css">
</head>
<body>
<div id="main">
<h1 class="page-title">Class: EntityBoxCamera</h1>
<section>
<header>
<h2>
<span class="ancestors"><a href="Splat.html">Splat</a>.</span>
EntityBoxCamera
</h2>
</header>
<article>
<div class="container-overview">
<h4 class="name" id="EntityBoxCamera"><span class="type-signature"></span>new EntityBoxCamera<span class="signature">(entity, width, height, screenCenterX, screenCenterY)</span><span class="type-signature"></span></h4>
<div class="description">
A <a href="Splat.Camera.html">Splat.Camera</a> that tracks an <a href="Splat.Entity.html">Splat.Entity</a> to keep it on screen within an invisible box. If the Entity moves outside of the invisible box, the camera is adjusted the minimal amount so that the Entity is back inside the box.
</div>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>entity</code></td>
<td class="type">
<span class="param-type"><a href="Splat.Entity.html">Splat.Entity</a></span>
</td>
<td class="description last">The Entity for the camera to track.</td>
</tr>
<tr>
<td class="name"><code>width</code></td>
<td class="type">
<span class="param-type">number</span>
</td>
<td class="description last">The width of the invisible box to keep the <a href="Splat.Entity.html">Splat.Entity</a> within.</td>
</tr>
<tr>
<td class="name"><code>height</code></td>
<td class="type">
<span class="param-type">number</span>
</td>
<td class="description last">The height of the invisible box to keep the <a href="Splat.Entity.html">Splat.Entity</a> within.</td>
</tr>
<tr>
<td class="name"><code>screenCenterX</code></td>
<td class="type">
<span class="param-type">number</span>
</td>
<td class="description last">The center of the invisible box on the screen along the x axis.</td>
</tr>
<tr>
<td class="name"><code>screenCenterY</code></td>
<td class="type">
<span class="param-type">number</span>
</td>
<td class="description last">The center of the invisible box on the screen along the y axis.</td>
</tr>
</tbody>
</table>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="entity_box_camera.js.html">entity_box_camera.js</a>, <a href="entity_box_camera.js.html#line27">line 27</a>
</li></ul></dd>
</dl>
<h5>Example</h5>
<pre class="prettyprint"><code>var scene = new Splat.Scene(canvas, function() {
// initialization
this.player = new Splat.Entity(200, 200, 50, 50);
// make a camera that won't let the player closer than 100 pixels to the left and right sides, or 50 pixels from the top or bottom
this.camera = new Splat.EntityBoxCamera(this.player, canvas.width - 200, canvas.height - 100, canvas.width / 2, canvas.height / 2);
}, function(elapsedMillis) {
// simulation
}, function(context) {
// draw
});</code></pre>
</div>
<h3 class="subsection-title">Extends</h3>
<ul>
<li><a href="Splat.Entity.html">Splat.Entity</a></li>
</ul>
<h3 class="subsection-title">Members</h3>
<h4 class="name" id="entity"><span class="type-signature"></span>entity<span class="type-signature"> :<a href="Splat.Entity.html">Splat.Entity</a></span></h4>
<div class="description">
The <a href="Splat.Entity.html">Splat.Entity</a> for the camera to track.
</div>
<h5>Type:</h5>
<ul>
<li>
<span class="param-type"><a href="Splat.Entity.html">Splat.Entity</a></span>
</li>
</ul>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="entity_box_camera.js.html">entity_box_camera.js</a>, <a href="entity_box_camera.js.html#line32">line 32</a>
</li></ul></dd>
</dl>
<h4 class="name" id="height"><span class="type-signature"></span>height<span class="type-signature"> :number</span></h4>
<div class="description">
Height of the Entity, extending downward from <a href="Splat.Entity.html#y">Splat.Entity#y</a>.
</div>
<h5>Type:</h5>
<ul>
<li>
<span class="param-type">number</span>
</li>
</ul>
<dl class="details">
<dt class="inherited-from">Inherited From:</dt>
<dd class="inherited-from"><ul class="dummy"><li>
<a href="Splat.Entity.html#height">Splat.Entity#height</a>
</li></ul></dd>
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="entity.js.html">entity.js</a>, <a href="entity.js.html#line34">line 34</a>
</li></ul></dd>
</dl>
<h4 class="name" id="lastX"><span class="type-signature">(readonly) </span>lastX<span class="type-signature"> :number</span></h4>
<div class="description">
The value of <a href="Splat.Entity.html#x">Splat.Entity#x</a> in the previous frame.
</div>
<h5>Type:</h5>
<ul>
<li>
<span class="param-type">number</span>
</li>
</ul>
<dl class="details">
<dt class="inherited-from">Inherited From:</dt>
<dd class="inherited-from"><ul class="dummy"><li>
<a href="Splat.Entity.html#lastX">Splat.Entity#lastX</a>
</li></ul></dd>
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="entity.js.html">entity.js</a>, <a href="entity.js.html#line50">line 50</a>
</li></ul></dd>
</dl>
<h4 class="name" id="lastY"><span class="type-signature">(readonly) </span>lastY<span class="type-signature"> :number</span></h4>
<div class="description">
The value of <a href="Splat.Entity.html#y">Splat.Entity#y</a> in the previous frame.
</div>
<h5>Type:</h5>
<ul>
<li>
<span class="param-type">number</span>
</li>
</ul>
<dl class="details">
<dt class="inherited-from">Inherited From:</dt>
<dd class="inherited-from"><ul class="dummy"><li>
<a href="Splat.Entity.html#lastY">Splat.Entity#lastY</a>
</li></ul></dd>
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="entity.js.html">entity.js</a>, <a href="entity.js.html#line56">line 56</a>
</li></ul></dd>
</dl>
<h4 class="name" id="screenCenterX"><span class="type-signature"></span>screenCenterX<span class="type-signature"> :number</span></h4>
<div class="description">
The center of the invisible box on the screen along the x axis.
</div>
<h5>Type:</h5>
<ul>
<li>
<span class="param-type">number</span>
</li>
</ul>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="entity_box_camera.js.html">entity_box_camera.js</a>, <a href="entity_box_camera.js.html#line37">line 37</a>
</li></ul></dd>
</dl>
<h4 class="name" id="screenCenterY"><span class="type-signature"></span>screenCenterY<span class="type-signature"> :number</span></h4>
<div class="description">
The center of the invisible box on the screen along the y axis.
</div>
<h5>Type:</h5>
<ul>
<li>
<span class="param-type">number</span>
</li>
</ul>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="entity_box_camera.js.html">entity_box_camera.js</a>, <a href="entity_box_camera.js.html#line42">line 42</a>
</li></ul></dd>
</dl>
<h4 class="name" id="vx"><span class="type-signature"></span>vx<span class="type-signature"> :number</span></h4>
<div class="description">
Velocity along the x-axis in pixels/millisecond.
</div>
<h5>Type:</h5>
<ul>
<li>
<span class="param-type">number</span>
</li>
</ul>
<dl class="details">
<dt class="inherited-from">Inherited From:</dt>
<dd class="inherited-from"><ul class="dummy"><li>
<a href="Splat.Entity.html#vx">Splat.Entity#vx</a>
</li></ul></dd>
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="entity.js.html">entity.js</a>, <a href="entity.js.html#line39">line 39</a>
</li></ul></dd>
</dl>
<h4 class="name" id="vy"><span class="type-signature"></span>vy<span class="type-signature"> :number</span></h4>
<div class="description">
Velocity along the y-axis in pixels/millisecond.
</div>
<h5>Type:</h5>
<ul>
<li>
<span class="param-type">number</span>
</li>
</ul>
<dl class="details">
<dt class="inherited-from">Inherited From:</dt>
<dd class="inherited-from"><ul class="dummy"><li>
<a href="Splat.Entity.html#vy">Splat.Entity#vy</a>
</li></ul></dd>
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="entity.js.html">entity.js</a>, <a href="entity.js.html#line44">line 44</a>
</li></ul></dd>
</dl>
<h4 class="name" id="width"><span class="type-signature"></span>width<span class="type-signature"> :number</span></h4>
<div class="description">
Width of the Entity, extending to the right of <a href="Splat.Entity.html#x">Splat.Entity#x</a>.
</div>
<h5>Type:</h5>
<ul>
<li>
<span class="param-type">number</span>
</li>
</ul>
<dl class="details">
<dt class="inherited-from">Inherited From:</dt>
<dd class="inherited-from"><ul class="dummy"><li>
<a href="Splat.Entity.html#width">Splat.Entity#width</a>
</li></ul></dd>
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="entity.js.html">entity.js</a>, <a href="entity.js.html#line29">line 29</a>
</li></ul></dd>
</dl>
<h4 class="name" id="x"><span class="type-signature"></span>x<span class="type-signature"> :number</span></h4>
<div class="description">
Leftmost position along the x-axis.
</div>
<h5>Type:</h5>
<ul>
<li>