title: A-frame move forward in camera direction
body: <p>I'm trying to make a component in A-frame that will move the player/camera in the direction the camera is facing. It should not move anywhere on the y plane, only in the x/y plane. The current setup in the dom is: </p>
  
  <pre><code>&lt;a-entity&gt;
      &lt;a-camera&gt;&lt;/a-camera&gt;
  &lt;/a-entity&gt;
  </code></pre>
  
  <p>I want to move the entity element position to x units in the current camera direction but it should not move anything on the y-plane. I have tried various solutions but they seem to introduce some weird shift in the camera. </p>