Video Ads from Vungle in Sprite kit Scene

I am trying to add Vungle video ads in my sprite kit skscene. I have a sprite node which is when clicked, should load the ad. The guide provided by Vungle https://github.com/Vungle/vungle-resources/blob/master/iOS-resources/iOS-dev-guide.md shows how to place an ad through a view controller.

VungleSDK* sdk = [VungleSDK sharedSDK];
[sdk playAd:self];

I have different SKScene and i want to play ad in the scene rather than i the view controller. How can i achieve it.

Following is my SKScene code where the user is clicking an SKSpriteNode and i want the ad to load.

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
for (UITouch *touch in touches) {
    SKNode *n = [self nodeAtPoint:[touch locationInNode:self]];
    if ( [n.name isEqual: @"play"]) {
        [self levelSelect];
    }
    else if( [n.name isEqual: @"coins"]){
        VungleSDK* sdk = [VungleSDK sharedSDK];
        [sdk playAd:self.view]; //TODO
    }
}

This gives error as i am not passing a view controller to the method playAd. Can someone guide me?

Sovled this so if anyone else gets the same problem, here is the solution:-

In your view controller , Do this inside viewDidLoad method

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleNotification:) name:@"playVungle" object:nil];

also create a method

-(void)playVungleAd{
  VungleSDK* sdk = [VungleSDK sharedSDK];
  [sdk playAd:self];
}

Don't forget to import VungleSDK/VungleSDK.h Now in your skscene, inside your touches began method do this

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
for (UITouch *touch in touches) {
    SKNode *n = [self nodeAtPoint:[touch locationInNode:self]];
    if ( [n.name isEqual: @"play"]) {
        [self levelSelect];
    }
    else if( [n.name isEqual: @"coins"]){
        [[NSNotificationCenter defaultCenter] postNotificationName:@"playVungle" object:nil]; //Sends message to viewcontroller to show ad.
    }

}

Here we are sending a message to view controller to play the vungle ad. Now when you touch your "coins" skspritenode in your scene, it should play the video ad.