skphysicsbody

I am currently working with the iOS 8 SpriteKit API's and am having a hard time creating an attractive magnetic force with SKFieldNode. I can create an opposing magnetic force just fine, however I can't reverse the field. Heres what I have currently: touchField = [SKFieldNode magneticField]; touchField.physicsBody = [SKPhysicsBody bodyWithCircleOfRadius:(self.frame.size.height/4 - 34)]; touchField.physicsBody.charge = 3; This particular field is supposed to be interactive with another SKSpriteNode. Electric and Magnetic fields are currently broken, as of iOS 8.1. They don't interact with the

This was asked earlier , but the original asker didn't need to change the dynamic property so he answered his own question by unasking it. I'm using Sprite Kit in iOS7 and I'd like to be able to change an SKPhysicsBody's dynamic property at runtime. Originally I was changing that in my touchesBegan: method. Someone in the Apple Dev forum suggested moving the change to the didSimulatePhysics: method but that didn't help either. This code causes the error: -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { if (!heyWereSwappingDynamismHere) { heyWereSwappingDynamismHere = YES;

Hi I'm trying to fix this bug with spritekit's physics shape appearing upside down. [SKPhysicsBody bodyWithTexture:monsterTexture size:monsterTexture.size] The first time the monster appears the phsyics body orientation is correct. But the second time and every time after that the monster appears it's physics body is inverted along the Y axis. See picture where skView.showsPhysics = true; so the physics shapes are displayed. The fact that it works correctly the first time makes me think maybe some property I'm not aware of is being modified or something. I thought of putting 2 physics blocks

I have a strange memory leaks when creating Sprite Kit physics bodies with custom shapes. This is how my implementation looks: CGFloat offsetX = self.frame.size.width * self.anchorPoint.x; CGFloat offsetY = self.frame.size.height * self.anchorPoint.y; CGMutablePathRef path = CGPathCreateMutable(); CGPathMoveToPoint(path, NULL, 4 - offsetX, 3 - offsetY); CGPathAddLineToPoint(path, NULL, 66 - offsetX, 3 - offsetY); CGPathAddLineToPoint(path, NULL, 35 - offsetX, 57 - offsetY); CGPathCloseSubpath(path); self.physicsBody = [SKPhysicsBody bodyWithPolygonFromPath:path]; CGPathRelease(path);

My scene has a bunch of rectangles with physics bodies that are the same size as the rectangle. I like to anchor all of my objects to CGPointZero, however I've noticed when I do that the physicsbody remains anchored in the middle. In other words, the position of my physics body is like 100 pixels lower and to the left of the visual representation. Here is a simple snippet of code: SKSpriteNode* square = [SKSpriteNode spriteNodeWithColor:[SKColor blackColor] size:CGSizeMake(width, height)]; square.anchorPoint = CGPointZero; //position based on bottom-left corner square.position = CGPointMake(x,

So I have an object that has a physicsBody and gravity affects it. It is also dynamic. Currently, when the users touches the screen, I run the code: applyForce(0, 400) The object moves up about 200 and then falls back down due to gravity. This only happens some of the time. Other times, it results in the object only moving 50ish units in the Y direction. I can't find a pattern... I put my project on dropbox so it can be opened if anyone is willing to look at it. https://www.dropbox.com/sh/z0nt79pd0l5psfg/bJTbaS2JpY EDIT: It seems this happens when the player is bouncing off of the ground