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  <section id="arcade-physics-collider">
<h1>Arcade physics collider<a class="headerlink" href="#arcade-physics-collider" title="Link to this heading"></a></h1>
<p>A <a class="reference external" href="https://newdocs.phaser.io/docs/3.55.2/Phaser.Physics.Arcade.Collider">Collider</a> is an object for checking collisions between multiple physics objects. The <a class="reference external" href="../scene-editor/index.html">Scene Editor</a> allows creating a collider by dragging it from the <a class="reference external" href="../workbench/blocks-view.html">Blocks view</a> to the scene:</p>
<img alt="Adding a collider." src="../_images/arcade-physics-add-collider-1-20221011.webp" />
<p>The collider objects are shown in the <strong>Arcade</strong> section of the <a class="reference external" href="../workbench/outline-view.html">Outline view</a>:</p>
<img alt="Collider in the outline." src="../_images/arcade-physics-collider-outline-20221011.webp" />
<p>When you select it, it shows the collider properties in the <a class="reference external" href="../workbench/inspector-view.html">Inspector view</a>. Each parameter corresponds to a parameter in the <a class="reference external" href="https://newdocs.phaser.io/docs/3.55.2/Phaser.Physics.Arcade.Collider">Collider</a> constructor:</p>
<img alt="Collider parameters." src="../_images/arcade-physics-collider-properties-20221011.webp" />
<p>The properties are:</p>
<ul class="simple">
<li><p><a class="reference external" href="https://newdocs.phaser.io/docs/3.55.2/Phaser.Physics.Arcade.Collider#overlapOnly">overlapOnly</a></p></li>
<li><p><a class="reference external" href="https://newdocs.phaser.io/docs/3.55.2/Phaser.Physics.Arcade.Collider#onject1">object1</a></p></li>
<li><p><a class="reference external" href="https://newdocs.phaser.io/docs/3.55.2/Phaser.Physics.Arcade.Collider#object2">object2</a></p></li>
<li><p><a class="reference external" href="https://newdocs.phaser.io/docs/3.55.2/Phaser.Physics.Arcade.Collider#collideCallback">collideCallback</a></p></li>
<li><p><a class="reference external" href="https://newdocs.phaser.io/docs/3.55.2/Phaser.Physics.Arcade.Collider#processCallback">processCallback</a></p></li>
<li><p><a class="reference external" href="https://newdocs.phaser.io/docs/3.55.2/Phaser.Physics.Arcade.Collider#callbackContext">callbackContext</a></p></li>
</ul>
<p>The <a class="reference external" href="../scene-editor/scene-compiler.html">scene compiler</a> verbatim-compies the values of the parameters (excepting <strong>overlapOnly</strong>) into the code. So you can write any JavaScript valid expression as value for the parameter.</p>
<p>In the case of the <strong>Object 1</strong> and <strong>Object 2</strong> parameters, you have the option of selecting the variable name of an object of the scene:</p>
<img alt="Select a variable name of an object of the scene." src="../_images/arcade-physics-collider-object-dialog-20221011.webp" />
<p>In addition to objects, you can reference an <a class="reference external" href="./object-list.html">Object List</a>.</p>
<p>So, the collider object is generated in code using the <a class="reference external" href="https://newdocs.phaser.io/docs/3.54.0/Phaser.Physics.Arcade.Factory#collider">collider</a> or <a class="reference external" href="https://newdocs.phaser.io/docs/3.54.0/Phaser.Physics.Arcade.Factory#overlap">overlap</a> methods of the Arcade <a class="reference external" href="https://newdocs.phaser.io/docs/3.54.0/Phaser.Physics.Arcade.Factory">Factory</a> class. Something like this:</p>
<div class="highlight-javascript notranslate"><div class="highlight"><pre><span></span><span class="kd">const</span><span class="w"> </span><span class="nx">collider_stone</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">physics</span><span class="p">.</span><span class="nx">add</span><span class="p">.</span><span class="nx">collider</span><span class="p">(</span><span class="nx">gorilla</span><span class="p">,</span><span class="w"> </span><span class="nx">stone</span><span class="p">,</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">onCollideGorillaWithStone</span><span class="p">,</span><span class="w"> </span><span class="kc">undefined</span><span class="p">,</span><span class="w"> </span><span class="k">this</span><span class="p">);</span>
</pre></div>
</div>
<p>Or, if the <strong>Overlap Only</strong> parameter is selected:</p>
<div class="highlight-javascript notranslate"><div class="highlight"><pre><span></span><span class="kd">const</span><span class="w"> </span><span class="nx">collider_stone</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">physics</span><span class="p">.</span><span class="nx">add</span><span class="p">.</span><span class="nx">overlap</span><span class="p">(</span><span class="nx">gorilla</span><span class="p">,</span><span class="w"> </span><span class="nx">stone</span><span class="p">,</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">onCollideGorillaWithStone</span><span class="p">,</span><span class="w"> </span><span class="kc">undefined</span><span class="p">,</span><span class="w"> </span><span class="k">this</span><span class="p">);</span>
</pre></div>
</div>
<p>In addition to the Collider properties, it contains the <a class="reference external" href="./variable-properties.html">Variable properties</a>.</p>
</section>


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