Transitioning Between Scenes - Beginning Swift Games Development for iOS - page 127

like the way that looks. To stop this from happening, modify the current if statement to
look like the following:
if playerNode!.position.y >= 180.0 &&
playerNode!.position.y < 6400.0 {
Save this change and run the game again. Try making it to the top of the game and see
what happens. This time, when you reach the top of the scene, the background and fore-
ground will stop moving, and the playerNode will continue out of the viewport. This is
a little better.
Winning the Game
At this point, you know that the player is about to fly off the top of the scene, but you
need to test to see when the player actually flies off the scene to determine whether he ac-
tually wins. To do this, add the following else if to the current if block in the up-
date() method:
else if playerNode!.position.y > 7000.0 {
gameOverWithResult(true)
}
This code checks to see whether the playerNode has flown more than 7,000 points up
the scene, and if it has, it calls a new instance method gameOverWithResult() ,
passing true to this method, which indicates that the player won. Make these changes,
and let's take a look at the gameOverWithResult() method shown here:
func gameOverWithResult(gameResult: Bool) {
playerNode!.removeFromParent()
playerNode = nil
if gameResult {
println("YOU WON!")
}
else {
println("YOU LOSE!")
}
}