title: Pause an SKAction in Spritekit with Swift
body: <p>I have the following code to move an <code>SKSpriteNode</code>.</p>
  
  <pre><code>let moveDown = SKAction.moveBy(CGVectorMake(0, -120), duration: 1)
  let moveUp = SKAction.moveBy(CGVectorMake(0, +120), duration: 1)
  let moveSequence = SKAction.sequence([moveDown, moveUp])
  square.runAction(SKAction.repeatActionForever(moveSequence))
  </code></pre>
  
  <p>This moves the <code>SKSpriteNode</code> up and down forever. Is there a way that I could pause this <code>SKAction</code>? So that the <code>SKSpriteNode</code> will freeze in its current position, and then later when I decide, continue its movement?</p>
  
  <p>I only want to pause the movement of this <code>SKSpriteNode</code>. I do not want to pause the <code>SKScene</code>. Just the movement of this 1 <code>SKSpriteNode</code></p>