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<li class="toctree-l4"><a class="reference internal" href="#generating-the-code-for-a-component-in-an-object">Generating the code for a component in an object</a></li>
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<li class="toctree-l4"><a class="reference internal" href="#browsing-the-user-components-in-a-scene">Browsing the User Components in a scene</a></li>
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  <section id="adding-user-components-to-a-game-object">
<h1>Adding User Components to a Game Object<a class="headerlink" href="#adding-user-components-to-a-game-object" title="Link to this heading"></a></h1>
<p>You can add a user component to an object (entity)  in two ways: manually, and with the <a class="reference external" href="../scene-editor/index.html">Scene Editor</a>.</p>
<p>Adding a component to an object manually:</p>
<div class="highlight-javascript notranslate"><div class="highlight"><pre><span></span><span class="kd">const</span><span class="w"> </span><span class="nx">platform</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">...;</span>
<span class="kd">const</span><span class="w"> </span><span class="nx">move</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="ow">new</span><span class="w"> </span><span class="nx">HorizontalMove</span><span class="p">(</span><span class="nx">platform</span><span class="p">);</span>
<span class="nx">move</span><span class="p">.</span><span class="nx">minX</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">100</span><span class="p">;</span>
<span class="nx">move</span><span class="p">.</span><span class="nx">maxX</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">400</span><span class="p">;</span>
</pre></div>
</div>
<p>The constructor of the user component <strong>HorizontalMove</strong> adds the component to the object. You can keep a reference to the component or get the component from the game object, with the <strong>getComponent</strong> method:</p>
<div class="highlight-javascript notranslate"><div class="highlight"><pre><span></span><span class="kd">const</span><span class="w"> </span><span class="nx">move</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">HorizontalMove</span><span class="p">.</span><span class="nx">getComponent</span><span class="p">(</span><span class="nx">platform</span><span class="p">);</span>
</pre></div>
</div>
<p>However, the interesting is adding components to objects in the <a class="reference external" href="../scene-editor/index.html">Scene Editor</a>.</p>
<p>This is possible with the <strong>Add User Component</strong> command:</p>
<ol class="arabic">
<li><p>Select an object.</p></li>
<li><p>Execute the <strong>Add User Component</strong> command (<code class="docutils literal notranslate"><span class="pre">M</span></code>). It is also available in the context menu <strong>Scripting</strong> → <strong>Add User Component</strong>.</p>
<img alt="Add User Component command." src="../_images/scene-editor-user-components-obj-add-component-1-20230627.webp" />
</li>
<li><p>The command opens a dialog with all the components defined in the project (grouped by the <code class="docutils literal notranslate"><span class="pre">*.components</span></code> files). Select the one you want to add:</p></li>
</ol>
<blockquote>
<div><img alt="Select user component." src="../_images/scene-editor-user-components-obj-add-component-2-20230627.webp" />
</div></blockquote>
<ol class="arabic simple" start="4">
<li><p>The <a class="reference external" href="../workbench/inspector-view.html">Inspector view</a> provides a new <strong>HorizontalMove</strong> section with the properties of the component:</p></li>
</ol>
<blockquote>
<div><img alt="Showing the user components of an object." src="../_images/scene-editor-user-components-show-components-20230627.webp" />
</div></blockquote>
<section id="generating-the-code-for-a-component-in-an-object">
<h2>Generating the code for a component in an object<a class="headerlink" href="#generating-the-code-for-a-component-in-an-object" title="Link to this heading"></a></h2>
<p>The <a class="reference external" href="user-components-compiler.html">user components compiler</a> will generate the code to create the component, just like if you write it by hand:</p>
<div class="highlight-javascript notranslate"><div class="highlight"><pre><span></span><span class="c1">// bridge2 (components)</span>
<span class="kd">const</span><span class="w"> </span><span class="nx">bridge2HorizontalMove</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="ow">new</span><span class="w"> </span><span class="nx">HorizontalMove</span><span class="p">(</span><span class="nx">bridge2</span><span class="p">);</span>
<span class="nx">bridge2HorizontalMove</span><span class="p">.</span><span class="nx">horizVelocity</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">100</span><span class="p">;</span>
<span class="nx">bridge2HorizontalMove</span><span class="p">.</span><span class="nx">minX</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">10</span><span class="p">;</span>
<span class="nx">bridge2HorizontalMove</span><span class="p">.</span><span class="nx">maxX</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">400</span><span class="p">;</span>
</pre></div>
</div>
</section>
<section id="actions-for-a-component">
<h2>Actions for a component<a class="headerlink" href="#actions-for-a-component" title="Link to this heading"></a></h2>
<p>These are the actions associated to the user component of an object:</p>
<img alt="User component section's menu." src="../_images/scene-editor-user-components-section-menu-20230627.webp" />
<ul class="simple">
<li><p><strong>Select Objects With HorizontalMove</strong>: selects in the scene all objects containing the <strong>HorizontalMove</strong> component.</p></li>
<li><p><strong>Open Definition Of HorizontalMove</strong>: opens the definition of the component in the <a class="reference external" href="./user-components-editor.html">User Components Editor</a>.</p></li>
<li><p><strong>Move Up</strong>, <strong>Move Down</strong>: changes the order of the component.</p></li>
<li><p><strong>Delete</strong>: deletes the component from the object.</p></li>
</ul>
</section>
<section id="browsing-the-user-components-in-a-scene">
<h2>Browsing the User Components in a scene<a class="headerlink" href="#browsing-the-user-components-in-a-scene" title="Link to this heading"></a></h2>
<p>You can take an overview of all the user components in all the objects of the scene with the <strong>Browse User Components</strong> (<code class="docutils literal notranslate"><span class="pre">Shift+M</span></code>) command:</p>
<img alt="Browse User Component command." src="../_images/scene-editor-user-components-browse-1-20230627.webp" />
<img alt="User components in the scene." src="../_images/scene-editor-user-components-browse-2-20230627.webp" />
</section>
</section>


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