/code></h3><div class="doc"><p>Important variable for collision processing.
By default this value is set automatically during at the start of <code>update()</code>.</p></div></div><div class="field "><a name="mass"></a><h3 class="anchor"><code><span class="label label-meta label-meta-value" title="Used to store default values for fields and function arguments.">@:value(1)</span><a href="#mass"><span class="identifier">mass</span></a>:<a class="type" title="Float - The standard Float type, this is a double-p