ios - how to transition scenes with swift in spritekit -


having trouble figuring out need add below code in order switch scenes when node touched. need replace '....' in order have code below run. 

override func touchesbegan(touches: set<nsobject>, withevent event: uievent) {      ....       if touchednode.name == "game button" {         let transition = sktransition.revealwithdirection(sktransitiondirection.down, duration: 1.0)          let scene = file(size: self.scene.size)         scene.scalemode = skscenescalemode.aspectfill          self.scene.view.presentscene(scene, transition: transition)     } }

you can use code :

override func touchesbegan(touches: set<nsobject>, withevent event: uievent) {     /* called when touch begins */      touch in (touches as! set<uitouch>) {          let location = touch.locationinnode(self)          if self.nodeatpoint(location) == self.playbutton {              let reveal = sktransition.fliphorizontalwithduration(0.5)             let letsplay = playscene(size: self.size)             self.view?.presentscene(letsplay, transition: reveal)         }     } }

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