passing info from collectionView to gameScene - uiviewcontroller

Question

I have created a game using SpriteKit (GameScene and GameViewController) and Objective-C. Everything there works fine.
Within the same App I have created a UIViewController and a second viewController in storyboard that uses CollectionView. I have the collectionView loading the array.
I want to be able to tap on a collectionView Cell and have it open the gameView. Which I can do. However I would like to pass some information from the collectionView to the GameScene so I can load the background image and other information to individualize the GameScene for each collectionViewCell.
Here is my code for the collectionView
#import "collectionViewController.h"
#import "GameScene.h"
#import "GameViewController.h"
#implementation collectionViewController
#synthesize animalArray,theImage,StringPicture,myCell;
-(void) viewDidLoad {
[super viewDidLoad];
animalArray = [NSArray arrayWithObjects:#"Cat.png",
#"image1.png",
#"image2.png",
#"image3.png",
,nil];
}
-(NSInteger) numberOfSectionsInCollectionView:(UICollectionView *)collectionView {
return 1;
}
-(NSInteger) collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
return animalArray.count;
}
-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
myCell = [collectionView dequeueReusableCellWithReuseIdentifier:#"cell" forIndexPath:indexPath];
UIImage *images;
long row = [indexPath row];
images = [UIImage imageNamed:animalArray[row]];
myCell.image1.image = images;
return myCell;
}
-(void) collectionView:(UICollectionView *)collectionView didDeselectItemAtIndexPath:(NSIndexPath *)indexPath {
NSLog(#"indexPath.row:%ld",(long)indexPath.row);
if (indexPath.row==1) {
UIStoryboard *sb = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
UIViewController *vc = [sb instantiateViewControllerWithIdentifier:#"GameSceneOne"];
vc.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
NSLog(#"mycell.image1.image:%#",myCell.image1.image);
[self presentViewController:vc animated:YES completion:NULL];
}
if (indexPath.row==2) {
UIStoryboard *sb = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
UIViewController *vc = [sb instantiateViewControllerWithIdentifier:#"GameSceneOne"];
vc.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentViewController:vc animated:YES completion:NULL];
}
}
I have tried assigning the GameScene.image to the vc.image but one is a GameView and the other is a UIViewController so I can't do that.
I have tried using a segue but still the information can't be passed from on to the other.
How should I do this?

Answer 1

I approached this in a different way. Basically:
Cell has the skview and loads and presents scene.
Scene exposes properties (like a label for the months in the example)
In the cellForItemAt of the collectionView datasource, I instantiate the scene and just use the exposed properties.
Here is in code:
Step 1:
class GameCell: UICollectionViewCell {
#IBOutlet weak var myskview: SKView!
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
if let scene = SKScene(fileNamed: "MyScene") as? MyScene{
scene.scaleMode = .aspectFill
myskview.presentScene(scene)
}
}
}
Step 2:
class MyScene: SKScene {
var gameLabel: SKLabelNode!
var monthValue: String?
var bird: SKSpriteNode?
var floor: SKSpriteNode?
var bgColor: UIColor?
let birdCategory: UInt32 = 0x1 << 0
let floorCategory: UInt32 = 0x1 << 1
override func didMove(to view: SKView) { }
Step 3:
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "GameCell", for: indexPath) as! GameCell
let scene = cell.myskview.scene as! MyScene
scene.gameLabel.text = monthComponents[indexPath.row]
Just don't forget to create the label inside the scene using:
gameLabel = scene?.childNode(withName: "gameLabel") as! SKLabelNode
You can check the final result in my git: https://github.com/tennydesign/spriteKitAndCollectionView
Just pardon my dust. =)

Answer 2

Couple of ways to do this. One of them is using NSUserDefaults.
To store data in NSUserDefaults, do this:
// object can be almost anything. Strings, arrays, dictionaries...
NSString *object = #"WellDone";
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
[defaults setObject:object forKey:#"Hamburger"];
[defaults synchronize];
To read NSUserDefaults, do this:
NSString *myString = [[NSUserDefaults standardUserDefaults] objectForKey:#"Hamburger"];
The key being that you use the same key as when you created it.
And of course, read the docs (blah,blah, blah).