title: Object is not clickable when it is a child of another object in unity
body: <p>So, i made a simple code in unity that outputs "clicked" when the object is clicked by using this simple code :</p>
  
  <pre><code>private void OnMouseDown()
  {
       Debug.Log("clicked");
  }
  </code></pre>
  
  <p>it displays the message when clicked, but when the same object is a child of another object it is not clickable and doesn't display the message.</p>
  
  <p>How do i make it clickable when it is a child ?</p>