sprite-kit

问题 I have the problem that touchesEnded (on iOS) or mouseUp (on macOS) is still called on released objects when the touch/click was started before the release. This behavior is causing crashes in my project. I made a stripped down program with SceneKit and a SpriteKit overlay but I am not sure what I am doing wrong. I've started with the SceneKit game template (iOS or macOS) and I've added two classes: In GameViewController.m at the end of -(void)awakeFromNib I added this: OverlayScene *overlay=

问题 I have a sprite kit game and I want to show interstitial ad when the game is over. Well, I am able to show the ad after when the game over using NotificationCenter but the problem is that when the I close the ad, it returns to the WelcomeScene. I want to return to the GameOverScene after closing the ad but how? GameViewController.swift import UIKit import SpriteKit import GameplayKit import GoogleMobileAds class GameViewController: UIViewController , GADInterstitialDelegate { var

问题 I have an SKShapeNode which moves down when a sprite gets close to the top of the screen. However I can't seem to change the height of the frame. Changing the property directly gives me the error 'Expression is not assignable'. So I tried this code: //Move the world down world.position = CGPointMake(0.0f, -(20.0f)); SKAction* moveDown = [SKAction moveToY:(world.position.y - 50.0f) duration:1]; [world runAction:moveDown]; CGRect temp = world.frame; temp.size.height = (world.frame.size.height /

问题 I'm trying to understand SKPhysicsJointPin a bit better, specifically the anchor point parameter. I understand that the anchor point is the position in the parent node of the two physics bodies concerned. What I don't understand at which point in the participating bodies does the pin go through and if there is a way to control that. To make myself clear, say I'm making a clock with hands so the pin should go in the middle of the circle but for the hands is should go through the edge. So how

问题 This should be really straightforward. I'm trying to have my particles fade out using a keyframe sequence.. but when I use the keyframe sequence they dont fade out at all. Not sure what I could be doing wrong. particle creation: static func debris(size: Int) -> Array<SKEmitterNode> { if size > 5 { fatalError("we don't have that much debris") } var debrisArr: [SKEmitterNode] = [] for i in 1...size { let debris: SKEmitterNode = SKEmitterNode(fileNamed: "debris") debris.particleTexture =

问题 I'm currently working on some sort of top down racer if you will. The idea is to have two buttons, each for turning a car left or right. This all works, but it only works with one touch. I'd like to have the player turn the car by simply holding down the button. I now have -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { /* Called when a touch begins */ for (UITouch *touch in touches) { touched = YES; CGPoint location = [touch locationInNode:self]; SKNode *node = [self

问题 I want to use a pixel font in my SpriteKit game. But I can't use a bitmap font because I need to support many languages (too many characters). So I should use a ttf font file. I tried the following code, but characters were blurred by anti-aliasing. let myLabel = SKLabelNode(fontNamed:"My-Pixel-Font") myLabel.text = "Hello" myLabel.fontSize = 10 myLabel.position = CGPoint(x: 100.0, y: 100.0) myLabel.fontColor = SKColor.GrayColor() self.addChild(myLabel); Is there a good way to disable anti

问题 Ok so I have this code where spawn locations are put into an array and then one of the locations is picked at random with this code: let randx = spawnLocations[Int(arc4random_uniform(UInt32(spawnLocations.count)))] obstacle.position = CGPoint(x: randx, y: 0) Object Spawning code: var spawnLocations:[CGFloat] = [] func getObjectSpawnLocation() { //Create 5 possible spawn locations let numberOfNodes = 5 // Spacing between nodes will change if: 1) number of nodes is changed, 2) screen width is

问题 I am using touches to set SpriteKit nodes in motion. Currently I do this: //(previous code turns current touch and last touch into thisP and thatP)... CGPoint velocity = CGPointMake(thisP.x - lastP.x, thisP.y - lastP.y); //If the velocity is non-zero, apply it to the node: if (!CGPointEqualToPoint(velocity, CGPointZero)) { [[MyNode physicsBody] applyForce:CGVectorMake(velocity.x, velocity.y)]; } This is very effective at getting the nodes to move different speeds depending on how fast the

问题 I have code which runs a wait action for a duration of columnTime and then runs a block of code. This results in the block running once, then wait time, then block, then wait time, etc. func startSpawning(){ print(columnTime) let wait = SKAction.waitForDuration(columnTime) let block = SKAction.runBlock({[unowned self] in self.spawnObstacle()}) let sequence = SKAction.sequence([wait, block]) runAction(SKAction.repeatActionForever(sequence), withKey: "spawning") } //startSpawning I want the