       Query the engine to see if it is paused.
 
           engine.pause()
-    
+
           engine.paused()
           # true
-    
+
           engine.play()
-    
+
           engine.paused()
           # false
 

        canvas.drawText
          text: "HEALTH:"
          position: Point(20, 20)
    
        canvas.drawText
          text: player.health()
          position: Point(50, 20)

  ###

  ###*
  Observe or configure a <code>gameObject</code> that has been added
  to the engine.
  @name afterAdd
  @methodOf Engine#
