title: Godot engine collision with KinematicBody doesn't work
body: <p>I was fiddling around with the Godot engine and tried a little game. </p>
  
  <p>But I can't seem to get an info on colliding.</p>
  
  <pre><code>if is_colliding():
      print ("Collision with " + get_collider())
      get_node("Sprite").set_texture(walk_cycle_right_1)
      move_state_right = 1
      set_pos(Vector2(get_pos().x -10, get_pos().y))
  </code></pre>
  
  <p>It always prints <code>false</code>. I'm moving my character (<code>KinematicBody2d</code> -> <code>Sprite/CollisionShape2d</code>) with the <code>set_pos</code> command.</p>