以下是关于我的项目的一些信息：它是我买的book的项目 这是我的代码：
import SpriteKit
import CoreMotion
import GameplayKit
struct PhysicsCategory {
static let None: UInt32 = 0
static let Player: UInt32 = 0b1 // 1
static let PlatformNormal: UInt32 = 0b10 // 2
static let PlatformBreakable: UInt32 = 0b100 // 4
static let CoinNormal: UInt32 = 0b1000 // 8
static let CoinSpecial: UInt32 = 0b10000 // 16
static let Edges: UInt32 = 0b100000 // 32
static let PlatformDead: UInt32 = 0b1000000 // 64
}
class GameScene: SKScene, SKPhysicsContactDelegate {
var bgNode = SKNode()
var fgNode = SKNode()
var background: SKNode!
var lava: SKSpriteNode!
var backHeight: CGFloat = 0.0
var player: SKSpriteNode!
let motionManager = CMMotionManager()
let cameraNode = SKCameraNode()
// platforms (14)
var platform5Across: SKSpriteNode!
var coinArrow: SKSpriteNode!
var platformArrow: SKSpriteNode!
var platformDiagonal: SKSpriteNode!
var breakArrow: SKSpriteNode!
var break5Across: SKSpriteNode!
var breakDiagonal: SKSpriteNode!
var coin5Across: SKSpriteNode!
var coinDiagonal: SKSpriteNode!
var coinCross: SKSpriteNode!
var coinS5Across: SKSpriteNode!
var coinSDiagonal: SKSpriteNode!
var coinSCross: SKSpriteNode!
var coinSArrow: SKSpriteNode!
var platformMove: SKSpriteNode!
var enemyPlatform: SKSpriteNode!
var lastItemPosition = CGPointZero
var lastItemHeight: CGFloat = 0.0
var levelY: CGFloat = 0.0
var isPlaying: Bool = false
var xAcceleration = CGFloat(0)
var lastUpdateTimeInterval: NSTimeInterval = 0
var deltaTime: NSTimeInterval = 0
var lerpValue = CGFloat(0.2)
let cNa = SKAction.playSoundFileNamed("coin1", waitForCompletion: false)
let cSa = SKAction.playSoundFileNamed("coin4", waitForCompletion: false)
let jA = SKAction.playSoundFileNamed("jump", waitForCompletion: false)
let tTa = SKAction.playSoundFileNamed("tickTock", waitForCompletion: false)
let nA = SKAction.playSoundFileNamed("nitro", waitForCompletion: false)
let dA = SKAction.playSoundFileNamed("player_die", waitForCompletion: false)
override func didMoveToView(view: SKView) {
physicsWorld.contactDelegate = self
physicsWorld.gravity = CGVector(dx: 0.0, dy: -20.0)
setCameraPosition(CGPoint(x: size.width/2, y: size.height/2))
setupCoreMotion()
setupNodes()
setupLevel()
setupPlayer()
}
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
if !isPlaying {
bombDrop()
}
}
override func update(currentTime: NSTimeInterval) {
// 1
if lastUpdateTimeInterval > 0 {
deltaTime = currentTime - lastUpdateTimeInterval
} else {
deltaTime = 0
}
lastUpdateTimeInterval = currentTime
// 2
if paused { return }
// 3
if isPlaying == true {
updateCamera()
updatePlayer()
updateLava(deltaTime)
updateCollisionLava()
}
updateLevel()
}
func updateLevel() {
let cameraPos = getCameraPosition()
if cameraPos.y > levelY - (size.height * 0.55){
createBackgroundNode()
while l {
<#code#>
}
addRandomOverlayNode()
}
}
func updatePlayer() {
player.physicsBody?.velocity.dx = xAcceleration * 4000.0
var playerPosition = convertPoint(player.position,
fromNode: fgNode)
if playerPosition.x < -player.size.width/2 {
playerPosition = convertPoint(CGPoint(x: size.width +
player.size.width/2, y: 0.0), toNode: fgNode)
player.position.x = playerPosition.x
}
else if playerPosition.x > size.width + player.size.width/2 {
playerPosition = convertPoint(CGPoint(x:
-player.size.width/2, y: 0.0), toNode: fgNode)
player.position.x = playerPosition.x
}
}
func updateCamera() {
let cameraTarget = convertPoint(player.position, fromNode: fgNode)
var targetPosition = CGPoint(x: getCameraPosition().x, y: cameraTarget.y - (scene!.view!.bounds.height * 0.40))
let lavaPos = convertPoint(lava.position, fromNode: fgNode)
targetPosition.y = max(targetPosition.y, lavaPos.y)
let diff = targetPosition - getCameraPosition()
let lerpDiff = diff * lerpValue
let newPosition = getCameraPosition() + lerpDiff
setCameraPosition(CGPoint(x: size.width/2, y: newPosition.y))
}
func updateLava(dt: NSTimeInterval) {
let lowerLeft = CGPoint(x: 0, y: cameraNode.position.y - (size.height / 2))
let visibleMinYFg = scene!.convertPoint(lowerLeft, toNode:
fgNode).y
let lavaVelocity = CGPoint(x: 0, y: 120)
let lavaStep = lavaVelocity * CGFloat(dt)
var newPosition = lava.position + lavaStep
newPosition.y = max(newPosition.y, (visibleMinYFg - 125.0))
lava.position = newPosition
}
func updateCollisionLava() {
if player.position.y < lava.position.y + 90 {
boostPlayer()
}
}
func setupNodes() {
let worldNode = childNodeWithName("World")!
bgNode = worldNode.childNodeWithName("Background")!
background = bgNode.childNodeWithName("Overlay")!.copy() as! SKNode
backHeight = background.calculateAccumulatedFrame().height
fgNode = worldNode.childNodeWithName("Foreground")!
player = fgNode.childNodeWithName("Player") as! SKSpriteNode
lava = fgNode.childNodeWithName("Lava") as! SKSpriteNode
fgNode.childNodeWithName("Bomb")?.runAction(SKAction.hide())
platformArrow = loadOverlayNode("PlatformArrow")//
platform5Across = loadOverlayNode("Platform5Across")//
platformDiagonal = loadOverlayNode("PlatformDiagonal")//
breakArrow = loadOverlayNode("BreakArrow") //
break5Across = loadOverlayNode("Break5Across") // -> //
breakDiagonal = loadOverlayNode("BreakDiagonal")//
coin5Across = loadOverlayNode("Coin5Across")//
coinDiagonal = loadOverlayNode("CoinDiagonal")//
coinCross = loadOverlayNode("CoinCross")//
coinArrow = loadOverlayNode("CoinArrow")//
coinS5Across = loadOverlayNode("CoinS5Across")//
coinSDiagonal = loadOverlayNode("CoinSDiagonal")//
coinSCross = loadOverlayNode("CoinSCross")//
coinSArrow = loadOverlayNode("CoinSArrow")//
platformMove = loadOverlayNode("PlatformMove")//
enemyPlatform = loadOverlayNode("EnemyPlatform")
addChild(cameraNode)
camera = cameraNode
}
func setupLevel() {
// Place initial platform
let initialPlatform = platform5Across.copy() as! SKSpriteNode
var itemPosition = player.position
itemPosition.y = player.position.y - ((player.size.height * 0.5) + (initialPlatform.size.height * 0.20))
initialPlatform.position = itemPosition
fgNode.addChild(initialPlatform)
lastItemPosition = itemPosition
lastItemHeight = initialPlatform.size.height / 2.0
// Create random level
levelY = bgNode.childNodeWithName("Overlay")!.position.y + backHeight
while lastItemPosition.y < levelY {
addRandomOverlayNode()
}
}
func setupPlayer() {
player.physicsBody = SKPhysicsBody(texture: player.texture!, size: player.size)
player.physicsBody!.dynamic = false
player.physicsBody!.allowsRotation = false
player.physicsBody!.categoryBitMask = PhysicsCategory.Player
player.physicsBody!.collisionBitMask = 0
}
func setupCoreMotion() {
motionManager.accelerometerUpdateInterval = 0.1
let queue = NSOperationQueue()
motionManager.startAccelerometerUpdatesToQueue(queue, withHandler: {
accelerometerData, error in
guard let accelerometerData = accelerometerData else {
return
}
let acceleration = accelerometerData.acceleration
self.xAcceleration = (CGFloat(acceleration.x) * 0.75) + (self.xAcceleration * 0.25)
})
}
func loadOverlayNode(fileName: String) -> SKSpriteNode {
let overlayScene = SKScene(fileNamed: fileName)!
let contentTemplateNode =
overlayScene.childNodeWithName("Overlay")
return contentTemplateNode as! SKSpriteNode
}
//////////// Here is the problem ///////////
//////////// \/ ///////////
//////////// \/ ///////////
func createOverlayNode(nodeType: SKSpriteNode, flipX: Bool) {
/*here*/let newTile = nodeType.copy() as! SKSpriteNode/*here*/
lastItemPosition.y = lastItemPosition.y + (lastItemHeight + (newTile.size.height / 2.0))
lastItemHeight = newTile.size.height / 2.0
newTile.position = lastItemPosition
if flipX {
newTile.xScale = -1.0
}
fgNode.addChild(newTile)
}
func createBackgroundNode() {
let backNode = background.copy() as! SKNode
backNode.position = CGPoint(x: 0.0, y: levelY)
bgNode.addChild(backNode)
levelY += backHeight
}
func addRandomOverlayNode() {
let overlaySprite: SKSpriteNode!
var flipH = false
let platformPercentage = 60
if Int.random(min: 1, max: 100) <= platformPercentage {
if Int.random(min: 1, max: 100) <= 75 {
// Create standard platforms 75%
switch Int.random(min: 0, max: 3) {
case 0:
overlaySprite = enemyPlatform//platformArrow
case 1:
overlaySprite = platform5Across
case 2:
overlaySprite = platformDiagonal
case 3:
overlaySprite = platformDiagonal
flipH = true
default:
overlaySprite = platformArrow
}
} else {
// Create breakable platforms 25%
switch Int.random(min: 0, max: 5) {
case 0:
overlaySprite = breakArrow
case 1:
overlaySprite = break5Across
case 2:
overlaySprite = breakDiagonal
case 3:
overlaySprite = breakDiagonal
flipH = true
case 4:
overlaySprite = platformMove
case 5:
overlaySprite = enemyPlatform
default:
overlaySprite = breakArrow
}
}
} else {
if Int.random(min: 1, max: 100) <= 75 {
// Create standard coins 75%
switch Int.random(min: 0, max: 4) {
case 0:
overlaySprite = coinArrow
case 1:
overlaySprite = coin5Across
case 2:
overlaySprite = coinDiagonal
case 3:
overlaySprite = coinDiagonal
flipH = true
case 4:
overlaySprite = coinCross
default:
overlaySprite = coinArrow
}
} else {
// Create special coins 25%
switch Int.random(min: 0, max: 4) {
case 0:
overlaySprite = coinSArrow
case 1:
overlaySprite = coinS5Across
case 2:
overlaySprite = coinSDiagonal
case 3:
overlaySprite = coinSDiagonal
flipH = true
case 4:
overlaySprite = coinSCross
default:
overlaySprite = coinSArrow
}
}
}
createOverlayNode(overlaySprite, flipX: flipH)
}
func bombDrop() {
isPlaying = true
let bomb = fgNode.childNodeWithName("Bomb")!
let scaleUp = SKAction.scaleTo(1.25, duration: 0.25)
let scaleDown = SKAction.scaleTo(1.0, duration: 0.25)
let sequence = SKAction.sequence([scaleUp, scaleDown])
let repeatSeq = SKAction.repeatActionForever(sequence)
let stop = SKAction.runBlock({self.removeActionForKey("bombing")})
bomb.runAction(repeatSeq)
bomb.runAction(SKAction.unhide())
runAction(tTa, withKey: "bombing")
runAction(SKAction.sequence([SKAction.waitForDuration(1.0), stop, SKAction.runBlock(startGame)]))
}
func startGame() {
fgNode.childNodeWithName("Bomb")!.removeFromParent()
fgNode.childNodeWithName("Title")!.removeFromParent()
player.physicsBody!.dynamic = true
superBoostPlayer()
}
func setPlayerVelocity(amount:CGFloat) {
let gain: CGFloat = 2.5
player.physicsBody!.velocity.dy = max(player.physicsBody!.velocity.dy, amount * gain)
}
func jumpPlayer() {
setPlayerVelocity(800)
runAction(jA)
}
func boostPlayer() {
setPlayerVelocity(1400)
}
func superBoostPlayer() {
setPlayerVelocity(2000)
runAction(nA)
}
func didBeginContact(contact: SKPhysicsContact) {
let other = contact.bodyA.categoryBitMask ==
PhysicsCategory.Player ? contact.bodyB : contact.bodyA
switch other.categoryBitMask {
case PhysicsCategory.CoinNormal:
if let coin = other.node as? SKSpriteNode {
jumpPlayer()
explode(coin, category: "CollectNormal")
runAction(cNa)
}
case PhysicsCategory.PlatformNormal:
if let platform = other.node as? SKSpriteNode {
if player.physicsBody!.velocity.dy < 0 {
jumpPlayer()
wiggle(platform)
}
}
case PhysicsCategory.PlatformBreakable:
if let platform = other.node as? SKSpriteNode {
if player.physicsBody!.velocity.dy < 0 {
jumpPlayer()
explode(platform, category: "BrokenPlatform")
}
}
case PhysicsCategory.CoinSpecial:
if let coin = other.node as? SKSpriteNode {
boostPlayer()
explode(coin, category: "CollectSpecial")
runAction(cSa)
}
case PhysicsCategory.PlatformDead:
if let platform = other.node as? SKSpriteNode {
let velocityY = player.physicsBody!.velocity.dy
if velocityY < 0 {
explode(platform, category: "BrokenPlatform")
jumpPlayer()
wiggle(platform)
} else if velocityY > 0 {
explode(platform, category: "BloodingPlatform")
runAction(dA)
}
}
default:
break;
}
}
func overlapAmount() -> CGFloat {
guard let view = self.view else {
return 0 }
let scale = view.bounds.size.height / self.size.height
let scaledWidth = self.size.width * scale
let scaledOverlap = scaledWidth - view.bounds.size.width
return scaledOverlap / scale
}
func getCameraPosition() -> CGPoint {
return CGPoint(
x: cameraNode.position.x + overlapAmount()/2,
y: cameraNode.position.y)
}
func setCameraPosition(position: CGPoint) {
cameraNode.position = CGPoint(
x: position.x - overlapAmount()/2,
y: position.y)
}
func explode(node: SKSpriteNode, category: String) {
node.removeAllActions()
node.texture = nil
node.physicsBody = nil
let effect = SKEmitterNode(fileNamed: category)!
node.addChild(effect)
node.runAction(SKAction.sequence([SKAction.waitForDuration(1.0), SKAction.removeFromParent()]))
}
func wiggle(object: SKSpriteNode) {
let posY = object.position.y
let wiggle = SKAction.sequence([SKAction.moveToY(posY-50, duration: 0.1), SKAction.moveToY(posY, duration: 0.1), SKAction.moveToY(posY-10, duration: 0.05), SKAction.moveToY(posY, duration: 0.025),SKAction.moveToY(posY-5, duration: 0.01), SKAction.moveToY(posY, duration: 0.01)])
object.runAction(wiggle)
}
}
出现错误的行：
func createOverlayNode(nodeType: SKSpriteNode, flipX: Bool) {
let newTile = nodeType.copy() as! SKSpriteNode
lastItemPosition.y = lastItemPosition.y + (lastItemHeight + (newTile.size.height / 2.0))
lastItemHeight = newTile.size.height / 2.0
newTile.position = lastItemPosition
if flipX {
newTile.xScale = -1.0
}
fgNode.addChild(newTile)
}
这是崩溃报告：
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 libc++abi.dylib 0x0000000181e3cce4 __dynamic_cast + 52
1 SpriteKit 0x000000019072a098 __15-[SKNode scene]_block_invoke + 60
2 SpriteKit 0x000000019072a098 __15-[SKNode scene]_block_invoke + 60
3 SpriteKit 0x00000001906ec7e8 SKCNode::walkUp(void (SKCNode*, bool*) block_pointer, bool) + 76
4 SpriteKit 0x0000000190729fec -[SKNode scene] + 132
5 SpriteKit 0x000000019072adc8 -[SKNode removeChild:] + 76
6 SpriteKit 0x0000000190729d90 -[SKNode removeFromParent] + 168
7 SpriteKit 0x00000001906e8ddc -[SKReferenceNode copyWithZone:] + 56
8 CoreFoundation 0x00000001826c6b38 -[NSArray initWithArray:range:copyItems:] + 288
9 SpriteKit 0x00000001907293f8 -[SKNode copyWithZone:] + 896
10 SpriteKit 0x0000000190738bfc -[SKSpriteNode copyWithZone:] + 56
我已经尝试修复此错误2天但没有任何改变，所以我会对有用的答案感到高兴。
答案 0 :(得分：0)
更改此行：
let newTile = nodeType.copy() as! SKSpriteNode
使用：
let newTile = nodeType
关于您的问题：
@available(iOS 2.0, *)
public class NSObject : NSObjectProtocol {
public func copy() -> AnyObject
}
您尝试使用尚未存在的初始化对象的复制方法，因此编译器会出错。