sprite-kit

问题 Is there a way of getting the closest nodes to a node? I'm just about to write a method to iterate all nodes and calculate distances etc... but wondered if there is a better way? I have 30 nodes and need the 2 nearest nodes to each of the 30 nodes (if that makes sense). 回答1: As of iOS 10, you can use the Spatial Partitioning features of GampelayKit. In 2D either GKQuadtree or GKRTree depending on your needs. From the docs: Quadtrees and R-trees have different performance tradeoffs for

问题 Is there a way of getting the closest nodes to a node? I'm just about to write a method to iterate all nodes and calculate distances etc... but wondered if there is a better way? I have 30 nodes and need the 2 nearest nodes to each of the 30 nodes (if that makes sense). 回答1: As of iOS 10, you can use the Spatial Partitioning features of GampelayKit. In 2D either GKQuadtree or GKRTree depending on your needs. From the docs: Quadtrees and R-trees have different performance tradeoffs for

问题 Is there a way of getting the closest nodes to a node? I'm just about to write a method to iterate all nodes and calculate distances etc... but wondered if there is a better way? I have 30 nodes and need the 2 nearest nodes to each of the 30 nodes (if that makes sense). 回答1: As of iOS 10, you can use the Spatial Partitioning features of GampelayKit. In 2D either GKQuadtree or GKRTree depending on your needs. From the docs: Quadtrees and R-trees have different performance tradeoffs for

问题 I am creating a game in sprite kit using swift, and I am trying to be able to move the SKScene around with a finger because not all of the nodes fit within the scene. I have already created world, overlay, and camera nodes with this code. override func didMoveToView(view: SKView) { world = self.childNodeWithName("world")! if !isCreated { isCreated = true // Camera setup self.anchorPoint = CGPoint(x: 0.5, y: 0.5) self.world = SKNode() self.world.name = "world" addChild(self.world) self.cam =

问题 I am creating a game in sprite kit using swift, and I am trying to be able to move the SKScene around with a finger because not all of the nodes fit within the scene. I have already created world, overlay, and camera nodes with this code. override func didMoveToView(view: SKView) { world = self.childNodeWithName("world")! if !isCreated { isCreated = true // Camera setup self.anchorPoint = CGPoint(x: 0.5, y: 0.5) self.world = SKNode() self.world.name = "world" addChild(self.world) self.cam =

问题 How can I define the physics body of an curved or not rectangle object I know for a rectangle I use ( rectangle of : width,height) And for a circle I use (circle of radius: ) But how can I do this for a different object like this one 回答1: You can use a CGPath like this: let path = CGMutablePath() path.addLine(to: CGPoint(x: 10, y: 10)) path.addArc(center: CGPoint(x: 20, y: 20), radius: 50, startAngle: 20, endAngle: 60, clockwise: true) node?.physicsBody = SKPhysicsBody(edgeLoopFrom: path) You

问题 I am using the spriteKit-s physics engine. I have 2 objects on the screen, (say player and enemy). Now I am trying to use the applyImpulse method on enemy, which is supposed to pull it towards the player. CGFloat radians = [Utilites pointPairToBearingDegrees:self.enemy.position secondPoint:self.player.position]; CGVector vector = CGVectorMake(500*cosf(radians), 500*sinf(radians)); [self.enemy.physicsBody applyImpulse:vector]; However this applies force in wierd directions. Not consistent at

问题 I'm developing a basic game for IOS using SpriteKit. iPhone devices come in many shapes and colours. The former of which is giving me a bit of a headache. Different sized screens. This is a two part question. Firstly What solutions have other people implemented to achieve a uniform layout over multiple display sizes? The current solution I'm looking at adopting is to find the device type as suggested in one of the solutions here Scale sprite kit game for all devices, I'll be implementing this

问题 I am unable to move my avatar in my gameScene at my defined speed(set at 40). It looks as if the avatar and the enemy is free floating in space. Here is my code- import SpriteKit public class GameScene: SKScene, SKPhysicsContactDelegate { let playerSpeed: CGFloat = 40.0 let coronaSpeed: CGFloat = 10.0 var mask: SKSpriteNode? var player: SKSpriteNode? var mcorona: [SKSpriteNode] = [] var lastTouch: CGPoint? = nil override public func didMove(to view: SKView) { physicsWorld.contactDelegate =

问题 I am creating a game with parallax scroll and the player is animated with texture atlas. I have encountered various problems while trying to assign physicsBody to node with texture atlas initially. Anyway, now, while trying to run the game on the phone (iPhone X, iOS 13.5), everything works but when I try to run it on simulator (iOS13.5), it fails to create a physics body for the ground which is supposed to be created with the following function: func parallaxScroll(image: String, y: CGFloat,