title: Subclassing with custom initializer from .sks file
body: <p>I have a custom class and I create nodes in the .sks file that I want to be instances of that custom class using a custom initializer.</p>
  
  <p>custom class:</p>
  
  <pre><code>Class Enemy: SKSPritenode {
      init(name: String, image: String, health: Int) {
        // stuff here
      }
  }
  </code></pre>
  
  <p>SKScene:</p>
  
  <pre><code> // error at runtime:
  var enemy1 = childNodeWithName("Enemy1") as! Enemy  
  
   // error: 
  var enemy1 = childNodeWithName("Enemy1") as! Enemy(name: "enemy1, image: "enemy1", health: 100) 
  </code></pre>
  
  <p>Is there a way to use the custom initializer with the .sks file? </p>