phaser-multires
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A fast, free and fun HTML5 Game Framework for Desktop and Mobile web browsers.
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<a href="Phaser.Particle.html">Particle</a>
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<a href="Phaser.Particles.html">Particles</a>
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<a href="PIXI.PixiFastShader.html">PixiFastShader</a>
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<a href="PIXI.PixiShader.html">PixiShader</a>
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<a href="PIXI.Rope.html">Rope</a>
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<a href="PIXI.Sprite.html">Sprite</a>
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<a href="PIXI.SpriteBatch.html">SpriteBatch</a>
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<a href="PIXI.TilingSprite.html">TilingSprite</a>
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<a href="PIXI.WebGLBlendModeManager.html">WebGLBlendModeManager</a>
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<div class="row-fluid">
<div class="span8">
<div id="main">
<!--<h1 class="page-title">Class: Signal</h1>-->
<section>
<header>
<h2>
<span class="ancestors"><a href="Phaser.html">Phaser</a>.</span>
Signal
</h2>
</header>
<article>
<div class="container-overview">
<dt>
<h4 class="name "
id="Signal"><span class="type-signature"></span>new Signal<span class="signature">()</span><span class="type-signature"></span></h4>
</dt>
<dd>
<div class="description">
<p>Signals are what Phaser uses to handle events and event dispatching.
You can listen for a Signal by binding a callback / function to it.
This is done by using either <code>Signal.add</code> or <code>Signal.addOnce</code>.</p>
<p>For example you can listen for a touch or click event from the Input Manager
by using its <code>onDown</code> Signal:</p>
<p><code>game.input.onDown.add(function() { ... });</code></p>
<p>Rather than inline your function, you can pass a reference:</p>
<p><code>game.input.onDown.add(clicked, this);</code>
<code>function clicked () { ... }</code></p>
<p>In this case the second argument (<code>this</code>) is the context in which your function should be called.</p>
<p>Now every time the InputManager dispatches the <code>onDown</code> signal (or event), your function
will be called.</p>
<p>Very often a Signal will send arguments to your function.
This is specific to the Signal itself.
If you're unsure then check the documentation, or failing that simply do:</p>
<p><code>Signal.add(function() { console.log(arguments); })</code></p>
<p>and it will log all of the arguments your function received from the Signal.</p>
<p>Sprites have lots of default signals you can listen to in their Events class, such as:</p>
<p><code>sprite.events.onKilled</code></p>
<p>Which is called automatically whenever the Sprite is killed.
There are lots of other events, see the Events component for a list.</p>
<p>As well as listening to pre-defined Signals you can also create your own:</p>
<p><code>var mySignal = new Phaser.Signal();</code></p>
<p>This creates a new Signal. You can bind a callback to it:</p>
<p><code>mySignal.add(myCallback, this);</code></p>
<p>and then finally when ready you can dispatch the Signal:</p>
<p><code>mySignal.dispatch(your arguments);</code></p>
<p>And your callback will be invoked. See the dispatch method for more details.</p>
</div>
<dl class="details">
<dt class="tag-source">Source -
<a href="src_core_Signal.js.html">core/Signal.js</a>, <a href="src_core_Signal.js.html#sunlight-1-line-60">line 60</a>
</dt>
</dl>
</dd>
</div>
<h3 class="subsection-title">Members</h3>
<dl>
<dt>
<h4 class="name "
id="active"><span class="type-signature"></span>active<span class="type-signature"> :boolean</span></h4>
</dt>
<dd>
<div class="description">
<p>Is the Signal active? Only active signals will broadcast dispatched events.</p>
<p>Setting this property during a dispatch will only affect the next dispatch. To stop the propagation of a signal from a listener use <a href="Phaser.Signal.html#halt">halt</a>.</p>
</div>
<dl class="details">
<dt class="tag-default">Default Value:</dt>
<dd class="tag-default"><ul class="dummy"><li>true</li></ul></dd>
<dt class="tag-source">Source -
<a href="src_core_Signal.js.html">core/Signal.js</a>, <a href="src_core_Signal.js.html#sunlight-1-line-100">line 100</a>
</dt>
</dl>
</dd>
<dt>
<h4 class="name "
id="memorize"><span class="type-signature"></span>memorize<span class="type-signature"> :boolean</span></h4>
</dt>
<dd>
<div class="description">
<p>Memorize the previously dispatched event?</p>
<p>If an event has been memorized it is automatically dispatched when a new listener is added with <a href="Phaser.Signal.html#add">add</a> or <a href="Phaser.Signal.html#addOnce">addOnce</a>.
Use <a href="Phaser.Signal.html#forget">forget</a> to clear any currently memorized event.</p>
</div>
<dl class="details">
<dt class="tag-source">Source -
<a href="src_core_Signal.js.html">core/Signal.js</a>, <a href="src_core_Signal.js.html#sunlight-1-line-84">line 84</a>
</dt>
</dl>
</dd>
</dl>
<h3 class="subsection-title">Methods</h3>
<dl>
<dt>
<h4 class="name "
id="add"><span class="type-signature"></span>add<span class="signature">(listener, <span class="optional">listenerContext</span>, <span class="optional">priority</span>, <span class="optional">args</span>)</span><span class="type-signature"> → {<a href="Phaser.SignalBinding.html">Phaser.SignalBinding</a>}</span></h4>
</dt>
<dd>
<div class="description">
<p>Add an event listener for this signal.</p>
<p>An event listener is a callback with a related context and priority.</p>
<p>You can optionally provide extra arguments which will be passed to the callback after any internal parameters.</p>
<p>For example: <code>Phaser.Key.onDown</code> when dispatched will send the Phaser.Key object that caused the signal as the first parameter.
Any arguments you've specified after <code>priority</code> will be sent as well:</p>
<p><code>fireButton.onDown.add(shoot, this, 0, 'lazer', 100);</code></p>
<p>When onDown dispatches it will call the <code>shoot</code> callback passing it: <code>Phaser.Key, 'lazer', 100</code>.</p>
<p>Where the first parameter is the one that Key.onDown dispatches internally and 'lazer',
and the value 100 were the custom arguments given in the call to 'add'.</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>listener</code></td>
<td class="type">
<span class="param-type">function</span>
</td>
<td class="attributes">
</td>
<td class="default">
</td>
<td class="description last"><p>The function to call when this Signal is dispatched.</p></td>
</tr>
<tr>
<td class="name"><code>listenerContext</code></td>
<td class="type">
<span class="param-type">object</span>
</td>
<td class="attributes">
<optional><br>
</td>
<td class="default">
</td>
<td class="description last"><p>The context under which the listener will be executed (i.e. the object that should represent the <code>this</code> variable).</p></td>
</tr>
<tr>
<td class="name"><code>priority</code></td>
<td class="type">
<span class="param-type">number</span>
</td>
<td class="attributes">
<optional><br>
</td>
<td class="default">
</td>
<td class="description last"><p>The priority level of the event listener. Listeners with higher priority will be executed before listeners with lower priority. Listeners with same priority level will be executed at the same order as they were added (default = 0)</p></td>
</tr>
<tr>
<td class="name"><code>args</code></td>
<td class="type">
<span class="param-type">any</span>
</td>
<td class="attributes">
<optional><br>
<repeatable><br>
</td>
<td class="default">
(none)
</td>
<td class="description last"><p>Additional arguments to pass to the callback (listener) function. They will be appended after any arguments usually dispatched.</p></td>
</tr>
</tbody>
</table>
<h5>Returns:</h5>
<div class="returns">
<div class="returns-type">
<span class="param-type"><a href="Phaser.SignalBinding.html">Phaser.SignalBinding</a></span>
-
</div>
<div class="returns-desc param-desc">
<p>An Object representing the binding between the Signal and listener.</p>
</div>
</div>
<dl class="details">
<dt class="tag-source">Source -
<a href="src_core_Signal.js.html">core/Signal.js</a>, <a href="src_core_Signal.js.html#sunlight-1-line-232">line 232</a>
</dt>
</dl>
</dd>
<dt>
<h4 class="name "
id="addOnce"><span class="type-signature"></span>addOnce<span class="signature">(listener, <span class="optional">listenerContext</span>, <span class="optional">priority</span>, <span class="optional">args</span>)</span><span class="type-signature"> → {<a href="Phaser.SignalBinding.html">Phaser.SignalBinding</a>}</span></h4>
</dt>
<dd>
<div class="description">
<p>Add a one-time listener - the listener is automatically removed after the first execution.</p>
<p>If there is as <a href="Phaser.Signal.html#memorize">memorized</a> event then it will be dispatched and
the listener will be removed immediately.</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>listener</code></td>
<td class="type">
<span class="param-type">function</span>
</td>
<td class="attributes">
</td>
<td class="default">
</td>
<td class="description last"><p>The function to call when this Signal is dispatched.</p></td>
</tr>
<tr>
<td class="name"><code>listenerContext</code></td>
<td class="type">
<span class="param-type">object</span>
</td>
<td class="attributes">
<optional><br>
</td>
<td class="default">
</td>
<td class="description last"><p>The context under which the listener will be executed (i.e. the object that should represent the <code>this</code> variable).</p></td>
</tr>
<tr>
<td class="name"><code>priority</code></td>
<td class="type">
<span class="param-type">number</span>
</td>
<td class="attributes">
<optional><br>
</td>
<td class="default">
</td>
<td class="description last"><p>The priority level of the event listener. Listeners with higher priority will be executed before listeners with lower priority. Listeners with same priority level will be executed at the same order as they were added (default = 0)</p></td>
</tr>
<tr>
<td class="name"><code>args</code></td>
<td class="type">
<span class="param-type">any</span>
</td>
<td class="attribu