SKScene iPad height width reversed

Question

I am trying to fill my SKScene with tiles, in an iPad app that only supports landscape mode. Within the scene I detect h & w as such:

int h = [UIScreen mainScreen].bounds.size.height;
int w = [UIScreen mainScreen].bounds.size.width;

Unfortunately, the dimensions sent back are the reverse of what they need to be. There are lots of topics in SO discussion this problem within the content of a view controller or a view, and the solution seems to be to detect screen size in viewWillAppear, not in viewDidLoad. This does not seem to be a valid solution for SKScenes, however.

Any suggestions?

Answer 1

Try, not using viewDidLoad and use this

- (void)viewWillLayoutSubviews
{
    [super viewWillLayoutSubviews];

    SKView * skView = (SKView *)self.view;
    if (!skView.scene) {
        skView.showsFPS = YES;
        skView.showsNodeCount = YES;

        SKScene * scene = [MyScene sceneWithSize:skView.bounds.size];
        scene.scaleMode = SKSceneScaleModeAspectFill;

        // Present the scene.
        [skView presentScene:scene];
    }
}

Answer 2

It doesn't make sense to initialize the scene in the layout handler. Resize the scene in the layout handler. (That's what it's for.)

@implementation SGOMyScene
{
    SKScene *scene;
}

- (void)viewDidLoad
{
    [super viewDidLoad];

    SKView *skView = (SKView *)self.view;
    skView.showsFPS = YES;
    skView.showsNodeCount = YES;

    scene = [SGOMyScene sceneWithSize:skView.bounds.size];
    scene.scaleMode = SKSceneScaleModeAspectFill;

    [skView presentScene:scene];
}

- (void)viewWillLayoutSubviews
{
    [super viewWillLayoutSubviews];

    SKView *skView = (SKView *)self.view;
    scene.size = skView.bounds.size;
}

Your scene should implement - (void)didChangeSize:(CGSize)oldSize to move everything into the right place.

Hooray, now your game handles device rotations too.