sprite kit swift, detecting collision for game over

Question

I am currently making my first game. I have a collision function ballCollideWithWall(_:Ball:) which is called as expected, but the game over scene is not presenting. I verified that the collision function is called by using NSLog.

    // game over function
func gameOver(){
    // presenting Game Over Scene
    let transition = SKTransition.fadeWithDuration(1.5)
    self.view?.presentScene(GameOverScene(), transition: transition)
}

which is then called in my function for the collision as

func ballCollideWithWall(Wall: SKSpriteNode, Ball: SKSpriteNode) {
    gameOver()
}

Answer 1

You are presenting the scene in wrong way. You should change your code like

let scene = GameOverScene(size: self.view!.bounds.size)
self.view!.presentScene(scene, transition: transition)