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I am planning to place three cards on a view which I add to the background. However I wanted to combine two of the cards and replace the first card position with the new card position. Is there any way I can do this?

I am trying to read the selected node position by:

CGPoint position = CGPointMake([self nodeAtPoint:touchLocation].position.x, [self nodeAtPoint:touchLocation].position.y);

However what I read is (0,0).

What happened?

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In your scene controller, you should do this inside -(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event:

UITouch *touch = [touches anyObject];
CGPoint touchPos = [touch locationInNode:self];

touchPos will have the position inside your scene, and you can do:

if ([self.cardOne containsPoint:touchPos]){
    //Do something 
    CGPoint cardOnePosition = self.cardOne.frame.origin;
}

If you want to get what node are you touching in a better way, you can subclass SKSpriteNode (for your cards) and from there implement -(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event, make sure inside init you make [self setUserInteractionEnabled:YES]. Then you could set up a delegate from this subclass that calls a method in your scene, and from your scene controll what to do better.

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