Push from an SKScene to a view controller - uiviewcontroller

Question

I'm trying to do the following:
SKTransition *reveal = [SKTransition pushWithDirection:SKTransitionDirectionDown duration:0.5];
SKView *skv = (SKView *)self.view.window.rootViewController.view;
[self.view presentScene:skv.scene transition:reveal];
but it doesn't work, I get a SIGABRT Error. What can I use to get the same effect. I can use dismissViewController but then how do I use the pushWithDirection effect.

Answer 1

I'm not entirely sure why you want to push to the view controller. If you just want to transition to a new scene you can do this from within the scene, without going near the parent view controller:
YourScene *nextScene = [[YourScene alloc] initWithSize:self.size];
SKTransition *reveal = [SKTransition pushWithDirection:SKTransitionDirectionDown duration:3.0];
[self.view presentScene:nextScene transition:reveal];
If you do want to call this from the view controller you can add the view controller as a property in your scene:
#import "YourViewController.h"
#property (nonatomic,weak) YourViewController *viewController;
In your view controller when you set up your initial scene, assign the view controller to that attribute:
yourScene.viewController = self;
Then, from within the scene you can call methods on the view controller:
[viewController yourMethod];
which is:
//YourViewController.h
#import "YourScene.h"
...
-(void)yourMethod;
//YourViewController.m
...
-(void)yourMethod
{
YourScene *nextScene = [[YourScene alloc] initWithSize:self.size];
nextScene.viewController = self;
SKTransition *reveal = [SKTransition pushWithDirection:SKTransitionDirectionDown duration:3.0];
[yourSKView presentScene:nextScene transition:doors ];
}