How to run SKActions in a sequence
One of the great features of SpriteKit's actions is that they can be chained together using action sequences. SpriteKit automatically ensures each action finishes before the next one begins – all you need to do is create the actions then put them into an array.
The example below makes a spaceship shrink down to 10% of its original size before fading out:
let sprite = SKSpriteNode(imageNamed:"Spaceship")
let scale = SKAction.scale(to: 0.1, duration: 0.5)
let fade = SKAction.fadeOut(withDuration: 0.5)
let sequence = SKAction.sequence([scale, fade])
sprite.run(sequence)Available from iOS 7.0 – see Hacking with Swift tutorial 14
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