title: Collision between Box Collider 2D and Polygon Collider 2D not working
body: <p>Currently I am working on a networked 2d platform game. </p>
  
  <p>My player is an empty object which serves as a parent to my actual graphics etc. The empty object has a <code>rigidbody (3d)</code> attached to it as it needs to have one in order to use the <code>configurable joint</code> component ( note: I move my player around using this 3d rigid body).The player body however, a child to the graphics, has a <code>box collider 2d</code> attached to it as it after all it is a 2d game and has to collide with other 2d objects.</p>
  
  <p>My platforms have <code>polygon collider 2d</code>s attached to them (which is connected to a platform effector if that is worth mentioning).</p>
  
  <p>Now, even though both my player body (which is a child to graphics which is a child to my player object) and my platforms have <code>2d colliders</code> on them they do not collide and can simply go inside each other (neither of them is marked as <code>isTrigger</code>).</p>
  
  <p>In order to solve this I thought I would add a  <code>rigidbody 2D</code> to the player body and see if that would do anything. Now upon adding the <code>rigidbody 2D</code> collisions did work but as soon as I made the <code>rigidbody 2D</code> have all position and rotation constraints ticked or as soon as I made it <code>kinematic</code> or <code>static</code> it would cease to collide with my platforms. The problem is I need to have the <code>rigidbody 2D</code> be <code>static</code> or not be able to move as I am currently moving my player object using the <code>rigidbody (3d)</code> attached to it and do not want any additional movement of the player body upon colliding with objects.</p>
  
  <p>I know this is quite a lot of information, so if you have any questions or would like further information just comment and I will be quick to respond. Thank you :-)!</p>
  
  <p>Edit:
  2d ray casts are also unable to hit the player body <code>box collider 2D</code></p>
  
  <p>Edit 2:
  So to recap:</p>
  
  <p>If either the player body or the platform has a <code>rigidbody 2d</code> that is not static (dynamic) and can move collisions work. However currently I only have a <code>rigidbody 2D</code> on my player body which has to be static though (as explained earlier) as well as a <code>box collider 2d</code>. My platform(s) on the other hand currently only has a <code>polygon collider 2d</code> as I do not see why it would need a <code>rigidbody 2D</code>.</p>