memory leaks - Swift / SpriteKit - Can't break strong reference cycle -

i completed spritekit game without having knowledge of strong reference cycles. i'm not having crashes or obvious problems, using instruments can see objects being retained between each level (skscene should dealloced between levels).

here general pieces of game:

gameconfig static struct

i have globally accessible static struct references viewcontroller. access viewcontroller using struct on app. assign gameconfig.viewcontroller = self inside of viewcontroller's viewdidload

gameviewcontroller

in here reference skscene, , skview such

var skview: myview! weak var scene: skscene! 

basescene

this base skscene class. property of class gets reference class itself

let indicators: indicators = indicators() 

killscene subclass of basescene

in basescene subclass, have many custom subclasses contained in arrays. these custom subclasses reference scene, scene not referencing them directly. has reference container array. example:

var radarblips: [radarblip] = [] 

i have 1 property has strong reference cycle killscene

var ship: killship = killship() 

in both indicators , killship classes, have referenced scene using weak keyword.

in fact have found every instance reference scene, , put weak in front of it.

i tried make stripped down game, , create strong reference cycle between sprite , scene, , break it. successful in doing so. can't seem debug own game.

any detailed suggestions helpful. know there's trickiness passing closures around. maybe has it? advice on great. i've put weak in more places need to.

i can not scene deinit

there wasn't easy way this. check properties reference eachother , use weak or unowned. bigger issue in spritekit checking closures. when you're running delayed closures (in skactions) , things it's important use [weak self] within closure doesnt keep object alive. it's easier add more weaks , unowned necessary until strong reference cycle broken , work way backwards deleting unnecessary ones.