sprite-kit

It's possible for one node having two physics body path ? how to do that ? I want to create a node that having two (circle) physics body on sides of the node. If it's not possible, is there are any tricks to achieve that ? thanks Mike S You want to use [SKPhysicsBody bodyWithBodies:...] . From the docs : The shapes of the physics bodies passed into this method are used to create a new physics body whose covered area is the union of the areas of its children. These areas do not need to be contiguous. If there is space between two parts, other bodies may be able to pass between these parts.

I created an app in SpriteKit with xcode where when the game is over, it shows you your score, and I want to add the feature to post your score to facebook. Pretty much all my code is in MyScene.m where it can't access presentViewController . Only my ViewController.m file can access that, so I tried calling a instance method in Viewcontroller from Myscene.m but I can't find a way to do that. The only way I have found calling methods from other files is using +(void) which is a class method I think. Myscene.m: if (location.x < 315 && location.x > 261 && location.y < 404 && location.y > 361) { /

I have a number of individual nodes (tiles) that make up the background of my game. They're each 32x32p, and are positioned next to each other to form floor/ roof/ obstacles. I load a map from a JSON-file, and position the nodes on a background-layer/node based on the contents of the JSON-file when the scene is initialized. This is working fine, however, I'm experiencing some bugs when moving the background layer/ the physics engine is doing its thing. Some of the nodes move 1 point/pixel away from each other, creating a gap between them. And since the background is a different color, this

I create a SKSpriteNode like that: var shape:SKSpriteNode = SKSpriteNode(color: UIColor.redColor(), size: CGSizeMake(CGFloat(sizeOfShape), CGFloat(sizeOfShape))) How can I achieve, that a SKSpriteNode has still smooth edges, after I've rotated it. Currently, it looks like that: As you see, the edges are jagged. 来源： https://stackoverflow.com/questions/25532760/make-edges-of-skspritenode-look-smooth-after-rotation

In SpriteKit, the clockwise direction is reversed for UIBezierPath but not for CGPath . For example, if I have do { let path = CGPathCreateMutable() CGPathAddArc(path, nil, 0, 0, 10, 0, CGFloat(M_PI_2), true) let node = SKShapeNode(path: path) node.position = CGPoint(x: self.size.width/2, y: self.size.height/2) self.addChild(node) } do { let path = UIBezierPath() path.addArcWithCenter(CGPoint(x: 0, y: 0), radius: 10, startAngle: 0, endAngle: CGFloat(M_PI_2), clockwise: true) let node = SKShapeNode(path: path.CGPath) node.position = CGPoint(x: self.size.width/2, y: self.size.height/2 - 100)

Two objects are added to an NSSet , but when I check membership, I can't find one of them. The test code below worked fine in iOS7 but fails in iOS8. SKNode *changingNode = [SKNode node]; SKNode *unchangingNode = [SKNode node]; NSSet *nodes = [NSSet setWithObjects:unchangingNode, changingNode, nil]; changingNode.position = CGPointMake(1.0f, 1.0f); if ([nodes containsObject:changingNode]) { printf("found node\n"); } else { printf("could not find node\n"); } Output: could not find node What happened between iOS7 and iOS8, and how can I fix it? Karl Voskuil SKNode 's implementations of isEqual

extension SKPhysicsBody { /// anchorPoint version of init(rectangleOfSize:center:) convenience init(rectangleOfSize s: CGSize, withAnchorPoint anchorPoint: CGPoint) { var center = CGPoint() center.x = (s.width / 2) - ( s.width * anchorPoint.x) center.y = (s.height / 2 ) - ( s.height * anchorPoint.y) self.init(rectangleOfSize: s, center: center) } } I got this error on runtime -[PKPhysicsBody initWithRectangleOfSize:withAnchorPoint:]: unrecognized selector sent to instance 0x7f9b03c4fff0 *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[PKPhysicsBody