Does anyone know why my app crashes when I switch scenes?

Question

I´m new to coding and I created a game with two scenes(Game Scene and Main menu) with Sprite-Kit. I have a Home Button which switches back to the Main Menu Scene from the Game Scene. When I tapp on the Home Button the app crashes and I wasn´t able to find a solution yet.

Here is the error(occurs while running touchesEnded()):

    libc++abi.dylib: terminating with uncaught exception of type NSException

    libsystem_kernel.dylib`__pthread_kill:
    0x112417d38 <+0>:  movl   $0x2000148, %eax          ; imm = 0x2000148 
    0x112417d3d <+5>:  movq   %rcx, %r10
    0x112417d40 <+8>:  syscall 
->  0x112417d42 <+10>: jae    0x112417d4c               ; <+20>
    0x112417d44 <+12>: movq   %rax, %rdi
    0x112417d47 <+15>: jmp    0x112410caf               ; cerror_nocancel
    0x112417d4c <+20>: retq   
    0x112417d4d <+21>: nop    
    0x112417d4e <+22>: nop    
    0x112417d4f <+23>: nop

This is my code:

var homeButton = SKSpriteNode(imageNamed: "HomeButton5.0")

class GameScene{

   override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {

     for touch in touches{

       let locationUser = touch.location(in: self)

     if atPoint(locationUser) == homeButton {

      }
    }
  }

  override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {

    for touch in touches{

      let locationUser = touch.location(in: self)

       if atPoint(locationUser) == homeButton { // <-- error/ crash 


        let transition = SKTransition.crossFade(withDuration: 0.2)
        let mainMenu = Mainmenu(size: self.size)  

        self.view?.presentScene(mainMenu, transition: transition) //transition
       }
     }
   }
 }


class Mainmenu: SKScene{  //Scene to switch to

}

Console:

check this link: https://stackoverflow.com/questions/26442414/libcabi-dylib-terminating-with-uncaught-exception-of-type-nsexception-lldb — Anders Sørensen, Nov 12 '17 at 11:32
Please format your code properly and use indentation, without indentation it's quite hard to read your code and this is not your first question lacking proper formatting. — Dávid Pásztor, Nov 12 '17 at 11:37
try make this with: let homeButton = SKSpriteNode(imageNamed: "HomeButton5.0") — Anders Sørensen, Nov 12 '17 at 12:02

score 0 · Answer 1 · answered Nov 12 '17 at 12:34

0

You can switch scenes using this code instead.

let reveal = SKTransition.flipVertical(withDuration: 0.5)
let gameScene = Game(size: self.size)
self.view?.presentScene(gameScene, transition: reveal)

answered Nov 12 '17 at 12:34

Niall Kehoe

416
5
17

where does your app crash? at the if statement or inside it? Use print statements to show where – Niall Kehoe Nov 12 '17 at 12:57
'print("1") if atPoint(locationUser) == homeButton { // <-- error/ crash print("2") ... } – Niall Kehoe Nov 12 '17 at 13:22
that will show you where the error takes place before or after the if statement – Niall Kehoe Nov 12 '17 at 13:22
I get this: 1; Home Button; 2; libc++abi.dylib: terminating with uncaught exception of type NSException (lldb) @Niall Kehoe – Jay23 Nov 12 '17 at 13:36
Show me a screenshot of the console – Niall Kehoe Nov 12 '17 at 13:40
Delete all the other print statements and just have the 1 and 2 in the places i said – Niall Kehoe Nov 12 '17 at 13:45
I did. @Niall Kehoe – Jay23 Nov 12 '17 at 14:00
remove the code for moving to the Mainmenu and see if it still crashes – Niall Kehoe Nov 12 '17 at 14:12
Than it doesn´t crashes: @Niall Kehoe – Jay23 Nov 12 '17 at 14:17
No, the transition typ is apparently not the problem(crossFade - flipVertical) @Niall Kehoe – Jay23 Nov 12 '17 at 14:26

Does anyone know why my app crashes when I switch scenes?

1 Answers1