skspritenode

I am trying to add a couple of nodes to the scene. When I run the app I just have the default gray background. Neither of the nodes appear in the scene. Here is what I have: class GameScene: SKScene { override func didMoveToView(view: SKView) { /* Setup your scene here */ let jumper = SKSpriteNode(imageNamed:"Jumper") jumper.xScale = 0.25 jumper.yScale = 0.25 jumper.position = CGPointMake(50, 300) self.addChild(jumper) let blob = SKSpriteNode(imageNamed:"Blob") blob.position = CGPointMake(160, 30) blob.xScale = 0.5 blob.yScale = 0.25 self.addChild(blob) } I have checked the image titles and

So I made some adjustments to the ball in my game and to avoid an unwrapping optional value error, I commmented out the following //didMoveToView self.physicsWorld.gravity = CGVectorMake(0, 0) self.physicsWorld.contactDelegate = self let fieldBody = SKPhysicsBody.init(edgeLoopFromRect: self.frame) self.physicsBody = fieldBody self.physicsBody!.affectedByGravity = false self.physicsBody!.usesPreciseCollisionDetection = true self.physicsBody!.dynamic = true self.physicsBody!.mass = 0 self.physicsBody!.friction = 0 self.physicsBody!.linearDamping = 0 self.physicsBody!.angularDamping = 0 self

I have a stack of transparent PNGs that I'd like to use in a SKSpriteNode animation with SKTexture s. I'd need to adjust the memory usage of SKTexture s by reducing texture quality down from RGBA8888 to RGBA4444 . How would I initialize SKTexture with RGBA4444 texture format? Edit: IOS Swift Game Development Cookbook: Simple Solutions for Game Development suggests that SKTexture would support PVRTC files as follows: However, I couldn't get a SKSpriteNode to display a texture generated this way. Luca Angeletti I just tried and in Xcode 8 the option Output Texture Atlas described here is no

I am quite confused with the spritekit coordinate system. I need clarification on two cases. Case 1: When a sprite node is added as child to the scene: SKSpriteNode * blueBall = [SKSpriteNode spriteNodeWithImageNamed:@"hRedBall.png"]; blueBall.name=@"blueball"; blueBall.size=CGSizeMake(75, 75); blueBall.position=point; //I am varying this point [self addChild:blueBall]; I have added the node at different points each time.These are the points I added the node at: (100x100)(200x200)(300x300)(400x400)(900,600) And in my iphone 5 device, they look like this: If you look into 100x100, when I add

I am trying to build a simple obstacle jumping app. I want the image for the obstacle to be picked randomly from a set of images. I have tried using a combination of the arc4random_uniform function and switch case but that doesn't seem to update the SKSpriteNode. What am i doing wrong? class PlayScene: SKScene, SKPhysicsContactDelegate{ ... var block3 = SKSpriteNode(imageNamed: "lion") .... } override func update(currentTime: NSTimeInterval) { ..... blockRunner() } func blockRunner() { var imageNamedAnimal = "" var randomIndex = arc4random_uniform(2) switch(randomIndex) { case 0 :