Adding an SKEmitter node into my game

Question

i get an error that reads "no visible @interface for viewcontroller declares the selector addChild" basicly im trying to add my skEmitter Node into my game.

-(void) didMoveToView:(SKView *) view{
   NSString *path = [[NSBundle mainBundle] pathForResource:@"MyParticle" ofType:@"sks"];
   SKEmitterNode *node = [NSKeyedUnarchiver unarchiveObjectWithFile:path];
   node.position = CGPointMake(0, 100);
   [self addChild : node]

}

Answer 1

Try this:

@implementation MyScene
{
    SKEmitterNode *myParticle; // < add this
}

-(id)initWithSize:(CGSize)size {
    if (self = [super initWithSize:size])
    {
        myParticle = [[SKEmitterNode alloc] init]; // < add this
        [self startMyParticle]; // < add this
    }
}

-(void)startMyParticle // << add this entire method from start to finish
{
    myParticle = [NSKeyedUnarchiver unarchiveObjectWithFile: [[NSBundle mainBundle] pathForResource:@"MyParticle" ofType:@"sks"]];
    myParticle.position = CGPointMake(200, 200); // < you can change these to the coordinates you want
    [self addChild: myParticle];
}

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Answer 2

Add it to MyScene.m within it's own method and NOT in the ViewDidLoad (view controller)

here is a link to check the requirements: https://developer.apple.com/library/ios/documentation/SpriteKit/Reference/SKEmitterNode_Ref/Reference/Reference.html

also make sure you have Sprite kit frame Work in you project or start with the sprite kit template provided by apple.