sprite-kit

问题 I'm still playing around with learning SpriteKit in iOS & have been doing lots of reading & lots of experimenting. I'm confused by something else I've found* regarding coordinates, frames & child nodes. Consider this snippet of code, in which I'm trying to draw a green box around my spaceship sprite for debugging purposes: func addSpaceship() { let spaceship = SKSpriteNode.init(imageNamed: "rocketship.png") spaceship.name = "spaceship" // VERSION 1 spaceship.position = CGPointMake

问题 I have a lot of characters in my game and because of that I have so many textures. When a texture atlas is loaded (containing about 5 different image textures) it increases the memory use and keeps it there at that amount. So the more textures just keeps driving that number up and up until sometimes the application crashes. I don't need all the characters at once, how can i maybe load some character textures when I need them and deallocate the others when i don't, but ill need to be able to

问题 Is it possible to purposely slow down the SpriteKit scene's FPS? I was thinking if this is possible to make debugging of my game easier. 回答1: You can do something like this as well (as an addition to crashoverride777's answer) by slowing down nodes or physics: To make nodes going into slow-mo (you can do this per node): self.speed = 0.2 //where self is a scene or to do the same with physics: self.physicsWorld.speed = 0.2 //where self is a scene 回答2: You can change the FPS value of your SKView

问题 I've a SpriteKit action file with some actions inside. To use one action, I use: let action = SKAction(named: "Shake") Instead is possible to use directly the name inside MyActions.sks file? Something like: let actions = SKScene(fileNamed: "MyActions.sks")` let shakeAction = actions.listOfAction.Shake //this is my guess If I print the scene file: let actions = SKScene(fileNamed: "MyActions.sks") print(actions) the output is: Optional({ "_info" = { "_previewScenePath" = "PippiPompiere

问题 I've a SpriteKit action file with some actions inside. To use one action, I use: let action = SKAction(named: "Shake") Instead is possible to use directly the name inside MyActions.sks file? Something like: let actions = SKScene(fileNamed: "MyActions.sks")` let shakeAction = actions.listOfAction.Shake //this is my guess If I print the scene file: let actions = SKScene(fileNamed: "MyActions.sks") print(actions) the output is: Optional({ "_info" = { "_previewScenePath" = "PippiPompiere

问题 I'm (desperately) trying to use a video as texture in a SCNScene with some fancy shader modifiers. I'd like to use a SCNProgram for that part. I've just taken the one from here: #include <metal_stdlib> using namespace metal; #include <SceneKit/scn_metal> struct MyNodeBuffer { float4x4 modelTransform; float4x4 modelViewTransform; float4x4 normalTransform; float4x4 modelViewProjectionTransform; }; typedef struct { float3 position [[ attribute(SCNVertexSemanticPosition) ]]; float2 texCoords [[

问题 So I was wondering, with the default "game" Xcode configuration. How would you make another SKScene? Like lets say I wanted to have a menu or something? Basically how would I create another document titled "title.swift" and then programmatically be able to switch back and forth through them? That way I could go from a menu to the game scene without muddling up my code? I cant find where in the remade code code it actually tell swift to display the game scene that was premade with the "game"

问题 Can someone provide an example of how to progressively blur a SKSpriteNode's image using Apple's Sprite Kit? For instance, let's say the user touches a button on the screen which will then trigger the background to slowly (i.e. progressively) blur until it reaches a specific threshold. Ideally, I would like to reverse the process too (e.g. allow the user to unblur the image by touching the same button). 回答1: There are two possible paths to take on this, both use SKEffectNodes SKEffectNodes

问题 The following code will animate a rotation. let something:SKSpriteNode = SKSpriteNode() func start(){ let rotateAction = SKAction.rotateToAngle(CGFloat(M_PI), duration: 10.0) something.runAction(SKAction.sequence([rotateAction])) } Now I want to stop the animation within the animating duration. Is there anything similar to the following? I want to stop the animation when the user touches the screen. func stop(){ something.SKAction.stop() } 回答1: You just have to use either: something.paused =

问题 I am using a SKAudioNode() to play background music in my game. I have a play/pause function and everything is working fine until I plug in my headphones. There is no sound at all and when I call the pause/play function I get this error AVAudioPlayerNode.mm:333: Start: required condition is false: _engine->IsRunning() com.apple.coreaudio.avfaudio', reason: 'required condition is false: _engine->IsRunning() Does anyone knows what this means? Code: import SpriteKit class GameScene: SKScene {