let moveAction = SKAction.moveBy(x: 10, y: -15, duration: 0.8)
let rotateAction = SKAction.rotate(byAngle: π, duration: 0.5)
let moveAndRotate = SKAction.group([moveAction, rotateAction])
let player = SKSpriteNode(imageNamed: "player.png")
player.run(moveAndRotate)