Pause an SKAction in Spritekit with Swift

Question

I have the following code to move an SKSpriteNode.

let moveDown = SKAction.moveBy(CGVectorMake(0, -120), duration: 1)
let moveUp = SKAction.move         


        

Answer 1

You should run an action with key:

 square.runAction(SKAction.repeatActionForever(moveSequence), withKey:"moving")

Then, use action's speed property to pause it:

if let action = square.actionForKey("moving") {

        action.speed = 0       
}

or to unpause it:

action.speed = 1