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return {number} The total number of PathPoints in this Path.</a>
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<!--<h1 class="page-title">Class: ArrayUtils</h1>-->
<section>
<header>
<h2>
<span class="ancestors"><a href="Phaser.html">Phaser</a>.</span>
ArrayUtils
</h2>
</header>
<article>
<div class="container-overview">
<dt>
<h4 class="name "
id="ArrayUtils"><span class="type-signature"></span>new ArrayUtils<span class="signature">()</span><span class="type-signature"></span></h4>
</dt>
<dd>
<div class="description">
<p>Utility functions for dealing with Arrays.</p>
</div>
<dl class="details">
<dt class="tag-source">Source -
<a href="src_utils_ArrayUtils.js.html">utils/ArrayUtils.js</a>, <a href="src_utils_ArrayUtils.js.html#sunlight-1-line-13">line 13</a>
</dt>
</dl>
</dd>
</div>
<h3 class="subsection-title">Methods</h3>
<dl>
<dt>
<h4 class="name "
id=".findClosest"><span class="type-signature">&lt;static> </span>findClosest<span class="signature">(value, arr)</span><span class="type-signature"> &rarr; {number}</span></h4>
</dt>
<dd>
<div class="description">
<p>Snaps a value to the nearest value in an array.<br>The result will always be in the range <code>[first_value, last_value]</code>.</p>
</div>
<h5>Parameters:</h5>
<table class="params table table-striped">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>value</code></td>
<td class="type">
<span class="param-type">number</span>
</td>
<td class="description last"><p>The search value</p></td>
</tr>
<tr>
<td class="name"><code>arr</code></td>
<td class="type">
<span class="param-type">Array.&lt;number></span>
</td>
<td class="description last"><p>The input array which <em>must</em> be sorted.</p></td>
</tr>
</tbody>
</table>
<h5>Returns:</h5>
<div class="returns">
<div class="returns-type">
<span class="param-type">number</span>
-
</div>
<div class="returns-desc param-desc">
<p>The nearest value found.</p>
</div>
</div>
<dl class="details">
<dt class="tag-source">Source -
<a href="src_utils_ArrayUtils.js.html">utils/ArrayUtils.js</a>, <a href="src_utils_ArrayUtils.js.html#sunlight-1-line-163">line 163</a>
</dt>
</dl>
</dd>
<dt>
<h4 class="name "
id=".getRandomItem"><span class="type-signature">&lt;static> </span>getRandomItem<span class="signature">(objects, startIndex, length)</span><span class="type-signature"> &rarr; {object}</span></h4>
</dt>
<dd>
<div class="description">
<p>Fetch a random entry from the given array.</p>
<p>Will return null if there are no array items that fall within the specified range<br>or if there is no item for the randomly chosen index.</p>
</div>
<h5>Parameters:</h5>
<table class="params table table-striped">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>objects</code></td>
<td class="type">
<span class="param-type">Array.&lt;any></span>
</td>
<td class="description last"><p>An array of objects.</p></td>
</tr>
<tr>
<td class="name"><code>startIndex</code></td>
<td class="type">
<span class="param-type">integer</span>
</td>
<td class="description last"><p>Optional offset off the front of the array. Default value is 0, or the beginning of the array.</p></td>
</tr>
<tr>
<td class="name"><code>length</code></td>
<td class="type">
<span class="param-type">integer</span>
</td>
<td class="description last"><p>Optional restriction on the number of values you want to randomly select from.</p></td>
</tr>
</tbody>
</table>
<h5>Returns:</h5>
<div class="returns">
<div class="returns-type">
<span class="param-type">object</span>
-
</div>
<div class="returns-desc param-desc">
<p>The random object that was selected.</p>
</div>
</div>
<dl class="details">
<dt class="tag-source">Source -
<a href="src_utils_ArrayUtils.js.html">utils/ArrayUtils.js</a>, <a href="src_utils_ArrayUtils.js.html#sunlight-1-line-15">line 15</a>
</dt>
</dl>
</dd>
<dt>
<h4 class="name "
id=".numberArray"><span class="type-signature">&lt;static> </span>numberArray<span class="signature">(start, end)</span><span class="type-signature"> &rarr; {Array.&lt;number>}</span></h4>
</dt>
<dd>
<div class="description">
<p>Create an array representing the inclusive range of numbers (usually integers) in <code>[start, end]</code>.<br>This is equivalent to <code>numberArrayStep(start, end, 1)</code>.</p>
</div>
<h5>Parameters:</h5>
<table class="params table table-striped">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>start</code></td>
<td class="type">
<span class="param-type">number</span>
</td>
<td class="description last"><p>The minimum value the array starts with.</p></td>
</tr>
<tr>
<td class="name"><code>end</code></td>
<td class="type">
<span class="param-type">number</span>
</td>
<td class="description last"><p>The maximum value the array contains.</p></td>
</tr>
</tbody>
</table>
<h5>Returns:</h5>
<div class="returns">
<div class="returns-type">
<span class="param-type">Array.&lt;number></span>
-
</div>
<div class="returns-desc param-desc">
<p>The array of number values.</p>
</div>
</div>
<dl class="details">
<dt class="tag-source">Source -
<a href="src_utils_ArrayUtils.js.html">utils/ArrayUtils.js</a>, <a href="src_utils_ArrayUtils.js.html#sunlight-1-line-262">line 262</a>
</dt>
</dl>
</dd>
<dt>
<h4 class="name "
id=".numberArrayStep"><span class="type-signature">&lt;static> </span>numberArrayStep<span class="signature">(start, <span class="optional">end</span>, <span class="optional">step</span>)</span><span class="type-signature"> &rarr; {Array}</span></h4>
</dt>
<dd>
<div class="description">
<p>Create an array of numbers (positive and/or negative) progressing from <code>start</code><br>up to but not including <code>end</code> by advancing by <code>step</code>.</p>
<p>If <code>start</code> is less than <code>end</code> a zero-length range is created unless a negative <code>step</code> is specified.</p>
<p>Certain values for <code>start</code> and <code>end</code> (eg. NaN/undefined/null) are currently coerced to 0;<br>for forward compatibility make sure to pass in actual numbers.</p>
</div>
<h5>Parameters:</h5>
<table class="params table table-striped">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th>Argument</th>
<th>Default</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>start</code></td>
<td class="type">
<span class="param-type">number</span>
</td>
<td class="attributes">
</td>
<td class="default">
</td>
<td class="description last"><p>The start of the range.</p></td>
</tr>
<tr>
<td class="name"><code>end</code></td>
<td class="type">
<span class="param-type">number</span>
</td>
<td class="attributes">
&lt;optional><br>
</td>
<td class="default">
</td>
<td class="description last"><p>The end of the range.</p></td>
</tr>
<tr>
<td class="name"><code>step</code></td>
<td class="type">
<span class="param-type">number</span>
</td>
<td class="attributes">
&lt;optional><br>
</td>
<td class="default">
1
</td>
<td class="description last"><p>The value to increment or decrement by.</p></td>
</tr>
</tbody>
</table>
<h5>Returns:</h5>
<div class="returns">
<div class="returns-type">
<span class="param-type">Array</span>
-
</div>
<div class="returns-desc param-desc">
<p>Returns the new array of numbers.</p>
</div>
</div>
<dl class="details">
<dt class="tag-source">Source -
<a href="src_utils_ArrayUtils.js.html">utils/ArrayUtils.js</a>, <a href="src_utils_ArrayUtils.js.html#sunlight-1-line-284">line 284</a>
</dt>
</dl>
<h5>Example</h5>
<pre class="sunlight-highlight-javascript">Phaser.ArrayUtils.numberArrayStep(4);
// => [0, 1, 2, 3]
Phaser.ArrayUtils.numberArrayStep(1, 5);
// => [1, 2, 3, 4]
Phaser.ArrayUtils.numberArrayStep(0, 20, 5);
// => [0, 5, 10, 15]
Phaser.ArrayUtils.numberArrayStep(0, -4, -1);
// => [0, -1, -2, -3]
Phaser.ArrayUtils.numberArrayStep(1, 4, 0);
// => [1, 1, 1]
Phaser.ArrayUtils.numberArrayStep(0);
// => []</pre>
</dd>
<dt>
<h4 class="name "
id=".removeRandomItem"><span class="type-signature">&lt;static> </span>removeRandomItem<span class="signature">(objects, startIndex, length)</span><span class="type-signature"> &rarr; {object}</span></h4>
</dt>
<dd>
<div class="description">
<p>Removes a random object from the given array and returns it.</p>
<p>Will return null if there are no array items that fall within the specified range<br>or if there is no item for the randomly chosen index.</p>
</div>
<h5>Parameters:</h5>
<table class="params table table-striped">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>objects</code></td>
<td class="type">
<span class="param-type">Array.&lt;any></span>
</td>
<td class="description last"><p>An array of objects.</p></td>
</tr>
<tr>
<td class="name"><code>startIndex</code></td>
<td class="type">
<span class="param-type">integer</span>
</td>
<td class="description last"><p>Optional offset off the front of the array. Default value is 0, or the beginning of the array.</p></td>
</tr>
<tr>
<td class="name"><code>length</code></td>
<td class="type">
<span class="param-type">integer</span>
</td>
<td class="description last"><p>Optional restriction on the number of values you want to randomly select from.</p></td>
</tr>
</tbody>
</table>
<h5>Returns:</h5>
<div class="returns">
<div class="returns-type">
<span class="param-type">object</span>
-
</div>
<div class="returns-desc param-desc">
<p>The random object that was removed.</p>
</div>
</div>
<dl class="details">
<dt class="tag-source">Source -
<a href="src_utils_ArrayUtils.js.html">utils/ArrayUtils.js</a>, <a href="src_utils_ArrayUtils.js.html#sunlight-1-line-39">line 39</a>
</dt>
</dl>
</dd>
<dt>
<h4 class="name toc-deprecated"
id=".rotate"><span class="type-signature">&lt;static> </span>rotate<span class="signature">(array)</span><span class="type-signature"> &rarr; {any}</span></h4>
</dt>
<dd>
<dt class="important deprecated-notice">
This method is <em>deprecated</em> and should not be used. It may be removed in the future.
</dt>
<div class="description">
<p>Moves the element from the start of the array to the end, shifting all items in the process.<br>The &quot;rotation&quot; happens to the left.</p>
<p>Before: <code>[ A, B, C, D, E, F ]</code><br>After: <code>[ B, C, D, E, F, A ]</code></p>
<p>See also Phaser.ArrayUtils.rotateRight</p>
</div>
<h5>Parameters:</h5>
<table class="params table table-striped">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>array</code></td>
<td class="type">
<span class="param-type">Array.&lt;any></span>
</td>
<td class="description last"><p>The array to rotate. The array is modified.</p></td>
</tr>
</tbody>
</table>
<h5>Returns:</h5>
<div class="returns">
<div class="returns-type">
<span class="param-type">any</span>
-
</div>
<div class="returns-desc param-desc">
<p>The rotated value.</p>
</div>
</div>
<dl class="details">
<dt class="important tag-deprecated">Deprecated:</dt>
<dd class="tag-deprecated"><ul>
<li>Please use Phaser.ArrayUtils.rotate instead.</li>
</ul></dd>
<dt class="tag-source">Source -
<a href="src_utils_ArrayUtils.js.html">utils/ArrayUtils.js</a>, <a href="src_utils_ArrayUtils.js.html#sunlight-1-line-239">line 239</a>
</dt>
</dl>
</dd>
<dt>
<h4 class="name "
id=".rotateLeft"><span class="type-signature">&lt;static> </span>rotateLeft<span class="signature">(array)</span><span class="type-signature"> &rarr; {any}</span></h4>
</dt>
<dd>
<div class="description">
<p>Moves the element from the start of the array to the end, shifting all items in the process.<br>The &quot;rotation&quot; happens to the left.</p>
<p>Before: <code>[ A, B, C, D, E, F ]</code><br>After: <code>[ B, C, D, E, F, A ]</code></p>
<p>See also Phaser.ArrayUtils.rotateRight</p>
</div>
<h5>Parameters:</h5>
<table class="params table table-striped">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>array</code></td>
<td class="type">
<span class="param-type">Array.&lt;any></span>
</td>
<td class="description last"><p>The array to rotate. The array is modified.</p></td>
</tr>
</tbody>
</table>
<h5>Returns:</h5>
<div class="returns">
<div class="returns-type">
<span class="param-type">any</span>
-
</div>
<div class="returns-desc param-desc">
<p>The rotated value.</p>
</div>
</div>
<dl class="details">
<dt class="tag-source">Source -
<a href="src_utils_ArrayUtils.js.html">utils/ArrayUtils.js</a>, <a href="src_utils_ArrayUtils.js.html#sunlight-1-line-217">line 217</a>
</dt>
</dl>
</dd>
<dt>
<h4 class="name "
id=".rotateMatrix"><span class="type-signature">&lt;static> </span>rotateMatrix<span class="signature">(matrix, direction)</span><span class="type-signature"> &rarr; {Array.&lt;Array.&lt;any>>}</span></h4>
</dt>
<dd>
<div class="description">
<p>Rotates the given matrix (array of arrays).</p>
<p>Based on the routine from <a href="http://jsfiddle.net/MrPolywhirl/NH42z/">http://jsfiddle.net/MrPolywhirl/NH42z/</a>.</p>
</div>
<h5>Parameters:</h5>
<table class="params table table-striped">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>matrix</code></td>
<td class="type">
<span class="param-type">Array.&lt;Array.&lt;any>></span>
</td>
<td class="description last"><p>The array to rotate; this matrix <em>may</em> be altered.</p></td>
</tr>
<tr>
<td class="name"><code>direction</code></td>
<td class="type">
<span class="param-type">number</span>
|
<span class="param-type">string</span>
</td>
<td class="description last"><p>The amount to rotate: the rotation in degrees (90, -90, 270, -270, 180) or a string command ('rotateLeft', 'rotateRight' or 'rotate180').</p></td>
</tr>
</tbody>
</table>
<h5>Returns:</h5>
<div class="returns">
<div class="returns-type">
<span class="param-type">Array.&lt;Array.&lt;any>></span>
-
</div>
<div class="returns-desc param-desc">
<p>The rotated matrix. The source matrix should be discarded for the returned matrix.</p>
</div>
</div>
<dl class="details">
<dt class="tag-source">Source -
<a href="src_utils_ArrayUtils.js.html">utils/ArrayUtils.js</a>, <a href="src_utils_ArrayUtils.js.html#sunlight-1-line-122">line 122</a>
</dt>
</dl>
</dd>
<dt>
<h4 class="name "
id=".rotateRight"><span class="type-signature">&lt;static> </span>rotateRight<span class="signature">(array)</span><span class="type-signature"> &rarr; {any}</span></h4>
</dt>
<dd>
<div class="description">
<p>Moves the element from the end of the array to the start, shifting all items in the process.<br>The &quot;rotation&quot; happens to the right.</p>
<p>Before: <code>[ A, B, C, D, E, F ]</code><br>After: <code>[ F, A, B, C, D, E ]</code></p>
<p>See also Phaser.ArrayUtils.rotateLeft.</p>
</div>
<h5>Parameters:</h5>
<table class="params table table-striped">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>array</code></td>
<td class="type">
<span class="param-type">Array.&lt;any></span>
</td>
<td class="description last"><p>The array to rotate. The array is modified.</p></td>
</tr>
</tbody>
</table>
<h5>Returns:</h5>
<div class="returns">
<div class="returns-type">
<span class="param-type">any</span>
-
</div>
<div class="returns-desc param-desc">
<p>The shifted value.</p>
</div>
</div>
<dl class="details">
<dt class="tag-source">Source -
<a href="src_utils_ArrayUtils.js.html">utils/ArrayUtils.js</a>, <a href="src_utils_ArrayUtils.js.html#sunlight-1-line-195">line 195</a>
</dt>
</dl>
</dd>
<dt>
<h4 class="name "
id=".shuffle"><span class="type-signature">&lt;static> </span>shuffle<span class="signature">(array)</span><span class="type-signature"> &rarr; {Array.&lt;any>}</span></h4>
</dt>
<dd>
<div class="description">
<p>A standard Fisher-Yates Array shuffle implementation which modifies the array in place.</p>
</div>
<h5>Parameters:</h5>
<table class="params table table-striped">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>array</code></td>
<td class="type">
<span class="param-type">Array.&lt;any></span>
</td>
<td class="description last"><p>The array to shuffle.</p></td>
</tr>
</tbody>
</table>
<h5>Returns:</h5>
<div class="returns">
<div class="returns-type">
<span class="param-type">Array.&lt;any></span>
-
</div>
<div class="returns-desc param-desc">
<p>The original array, now shuffled.</p>
</div>
</div>
<dl class="details">
<dt class="tag-source">Source -
<a href="src_utils_ArrayUtils.js.html">utils/ArrayUtils.js</a>, <a href="src_utils_ArrayUtils.js.html#sunlight-1-line-73">line 73</a>
</dt>
</dl>
</dd>
<dt>
<h4 class="name "
id=".transposeMatrix"><span class="type-signature">&lt;static> </span>transposeMatrix<span class="signature">(array)</span><span class="type-signature"> &rarr; {Array.&lt;Array.&lt;any>>}</span></h4>
</dt>
<dd>
<div class="description">
<p>Transposes the elements of the given matrix (array of arrays).</p>
</div>
<h5>Parameters:</h5>
<table class="params table table-striped">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>array</code></td>
<td class="type">
<span class="param-type">Array.&lt;Array.&lt;any>></span>
</td>
<td class="description last"><p>The matrix to transpose.</p></td>
</tr>
</tbody>
</table>
<h5>Returns:</h5>
<div class="returns">
<div class="returns-type">
<span class="param-type">Array.&lt;Array.&lt;any>></span>
-
</div>
<div class="returns-desc param-desc">
<p>A new transposed matrix</p>
</div>
</div>
<dl class="details">
<dt class="tag-source">Source -
<a href="src_utils_ArrayUtils.js.html">utils/ArrayUtils.js</a>, <a href="src_utils_ArrayUtils.js.html#sunlight-1-line-94">line 94</a>
</dt>
</dl>
</dd>
</dl>
</article>
</section>
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