我收到此错误代码
错误：游乐场执行中止：错误：执行被中断，原因：EXC_BAD_INSTRUCTION（代码= EXC_I386_INVOP，子代码= 0x0）。 该过程一直处于中断状态，使用＆＃34;线程返回-x＆＃34;返回表达评估之前的状态。
这是我的代码：
import Cocoa
import SpriteKit
import PlaygroundSupport
public class Scene: SKScene {
var point = CGPoint(x: 0,y : 0)
let viewFrame = CGRect(x:0,y:0, width: 1080, height: 1080)
override init(size: CGSize) {
super.init(size: size)
//these 3 lines are the problem
let options = [NSTrackingAreaOptions.mouseMoved, NSTrackingAreaOptions.activeInKeyWindow] as NSTrackingAreaOptions
let tracker = NSTrackingArea(rect: view, options: options, owner: self.view, userInfo: nil)
self.view?.addTrackingArea(tracker) //print(self.view!)
//Intro
let welcomeLabel = SKLabelNode(text: "Music Box")
welcomeLabel.fontColor = #colorLiteral(red: 1, green: 1, blue: 1, alpha: 1)
welcomeLabel.position = CGPoint(x: size.width / 2, y: size.height/2)
welcomeLabel.fontSize = 150
addChild(welcomeLabel)
delay(3.0)
{
let fadeOutAction = SKAction.fadeAlpha(to: 0.0, duration: 1.0)
welcomeLabel.run(fadeOutAction)
self.demo()
}
}
required public init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func demo() {
let songLabel = SKLabelNode(text: "song - SONG NAME")
songLabel.fontColor = #colorLiteral(red: 1, green: 1, blue: 1, alpha: 1)
songLabel.position = CGPoint(x: size.width / 2, y: size.height/12)
songLabel.fontSize = 50
songLabel.alpha = 0.0
addChild(songLabel)
let fadeInAction = SKAction.fadeAlpha(to: 1.0, duration: 1.0)
songLabel.run(fadeInAction)
self.musicBox()
}
func musicBox() {
let body = SKSpriteNode(imageNamed: "musicBox")
body.size = CGSize(width: 845.0, height: 379.0)
body.position = CGPoint(x: 535, y: 454)
let crank = SKSpriteNode(imageNamed: "crank")
crank.size = CGSize(width: 155.0, height: 188.0)
crank.position = CGPoint(x: 835.0, y: 480)
crank.anchorPoint = CGPoint(x: 0.5 , y: 0.5-0.08)
addChild(body)
addChild(crank)
print(point)
crank.run(
SKAction.repeatForever (
SKAction.sequence([
SKAction.wait(forDuration: 0.1),
SKAction.run({
let angle = atan2(self.point.y - crank.position.y , self.point.x - crank.position.x)
let rotate = SKAction.rotate(toAngle: angle - CGFloat(M_PI_2), duration: 0.25)
crank.run(rotate)
if(!(crank.frame.contains(self.point))) {
self.removeAction(forKey: "New Thread")
}
})
])
),
withKey: "New Thread"
)
}
override public func mouseMoved(with event: NSEvent) {
point = event.location(in: self)
print(point)
}
}
//Delays Animations
func delay(_ delay:Double, closure:@escaping ()->()) {
let when = DispatchTime.now() + delay
DispatchQueue.main.asyncAfter(deadline: when, execute: closure)
}
let scene = Scene(size: CGSize(width: 1080, height: 1080))
scene.backgroundColor = #colorLiteral(red: 0.4078431373, green: 0.7843137255, blue: 0.6509803922, alpha: 1)
scene.scaleMode = .aspectFit
print(Thread.callStackSymbols)
let view = SKView(frame: NSRect(x: 0, y: 0, width: 1920, height: 1080))
PlaygroundPage.current.needsIndefiniteExecution = true
view.presentScene(scene)
PlaygroundPage.current.liveView = view
错误显示在此行：
let scene = Scene(size: CGSize.init(width: 1080, height: 1080))
错误似乎是由于我声明/使用 point var时引起的，但我不知道为什么会出现这种情况。
堆叠线程：
Playground execution failed: error: MusicBox WWDC17.playground:10:44: error: cannot convert value of type 'SKView?' to expected argument type 'NSRect' (aka 'CGRect')
let tracker = NSTrackingArea(rect: view, options: options, owner: self.view, userInfo: nil)
^~~~
* thread #1: tid = 0xb837, 0x0000000101cc9360 com.apple.dt.Xcode.PlaygroundStub-macosx`executePlayground, queue = 'com.apple.main-thread', stop reason = breakpoint 1.1
* frame #0: 0x0000000101cc9360 com.apple.dt.Xcode.PlaygroundStub-macosx`executePlayground
frame #1: 0x0000000101cc722a com.apple.dt.Xcode.PlaygroundStub-macosx`-[PlaygroundViewBridgeService execute] + 90
frame #2: 0x00007fff9ced43ec CoreFoundation`__invoking___ + 140
frame #3: 0x00007fff9ced4271 CoreFoundation`-[NSInvocation invoke] + 289
frame #4: 0x00007fff9ceed7a6 CoreFoundation`-[NSInvocation invokeWithTarget:] + 54
frame #5: 0x00007fffb05d395b ViewBridge`__68-[NSVB_ViewServiceImplicitAnimationDecodingProxy forwardInvocation:]_block_invoke + 47
frame #6: 0x00007fffb05f2f4c ViewBridge`__runAnimationGroup_block_invoke + 21
frame #7: 0x00007fff9b350be2 AppKit`+[NSAnimationContext runAnimationGroup:] + 58
frame #8: 0x00007fff9aa1e782 AppKit`+[NSAnimationContext runAnimationGroup:completionHandler:] + 85
frame #9: 0x00007fffb05f2f28 ViewBridge`runAnimationGroup + 303
frame #10: 0x00007fffb05d3462 ViewBridge`+[NSVB_View _animateWithAttributes:animations:completion:] + 507
frame #11: 0x00007fffb05d38dd ViewBridge`-[NSVB_ViewServiceImplicitAnimationDecodingProxy forwardInvocation:] + 156
frame #12: 0x00007fff9ced2daa CoreFoundation`___forwarding___ + 538
frame #13: 0x00007fff9ced2b08 CoreFoundation`__forwarding_prep_0___ + 120
frame #14: 0x00007fff9ced43ec CoreFoundation`__invoking___ + 140
frame #15: 0x00007fff9ced4271 CoreFoundation`-[NSInvocation invoke] + 289
frame #16: 0x00007fff9ceed7a6 CoreFoundation`-[NSInvocation invokeWithTarget:] + 54
frame #17: 0x00007fffb05a135d ViewBridge`-[NSVB_QueueingProxy forwardInvocation:] + 327
frame #18: 0x00007fff9ced2daa CoreFoundation`___forwarding___ + 538
frame #19: 0x00007fff9ced2b08 CoreFoundation`__forwarding_prep_0___ + 120
frame #20: 0x00007fff9ced43ec CoreFoundation`__invoking___ + 140
frame #21: 0x00007fff9ced4271 CoreFoundation`-[NSInvocation invoke] + 289
frame #22: 0x00007fff9ceed7a6 CoreFoundation`-[NSInvocation invokeWithTarget:] + 54
frame #23: 0x00007fff9ced2daa CoreFoundation`___forwarding___ + 538
frame #24: 0x00007fff9ced2b08 CoreFoundation`__forwarding_prep_0___ + 120
frame #25: 0x00007fff9ced43ec CoreFoundation`__invoking___ + 140
frame #26: 0x00007fff9ced4271 CoreFoundation`-[NSInvocation invoke] + 289
frame #27: 0x00007fff9ceed7a6 CoreFoundation`-[NSInvocation invokeWithTarget:] + 54
frame #28: 0x00007fff9ced2daa CoreFoundation`___forwarding___ + 538
frame #29: 0x00007fff9ced2b08 CoreFoundation`__forwarding_prep_0___ + 120
frame #30: 0x00007fff9ced43ec CoreFoundation`__invoking___ + 140
frame #31: 0x00007fff9ced4271 CoreFoundation`-[NSInvocation invoke] + 289
frame #32: 0x00007fffb05f752b ViewBridge`withHintInProgress + 487
frame #33: 0x00007fffb05f725a ViewBridge`__deferNSXPCInvocationOntoMainThread_block_invoke_2 + 233
frame #34: 0x00007fffb0578df2 ViewBridge`+[NSViewServiceApplication withHostPID:invoke:] + 46
frame #35: 0x00007fffb05f711d ViewBridge`__deferNSXPCInvocationOntoMainThread_block_invoke + 179
frame #36: 0x00007fffb05f6d0a ViewBridge`__deferBlockOntoMainThread_block_invoke_2 + 544
frame #37: 0x00007fff9cef67dc CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 12
frame #38: 0x00007fff9ced77e4 CoreFoundation`__CFRunLoopDoBlocks + 356
frame #39: 0x00007fff9ced7326 CoreFoundation`__CFRunLoopRun + 1878
frame #40: 0x00007fff9ced6974 CoreFoundation`CFRunLoopRunSpecific + 420
frame #41: 0x00007fff9c462a5c HIToolbox`RunCurrentEventLoopInMode + 240
frame #42: 0x00007fff9c462891 HIToolbox`ReceiveNextEventCommon + 432
frame #43: 0x00007fff9c4626c6 HIToolbox`_BlockUntilNextEventMatchingListInModeWithFilter + 71
frame #44: 0x00007fff9aa085b4 AppKit`_DPSNextEvent + 1120
frame #45: 0x00007fff9b182d6b AppKit`-[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 2789
frame #46: 0x00007fffb057a06a ViewBridge`-[NSViewServiceApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 102
frame #47: 0x00007fff9a9fcf35 AppKit`-[NSApplication run] + 926
frame #48: 0x00007fff9a9c7850 AppKit`NSApplicationMain + 1237
frame #49: 0x00007fffb26888c7 libxpc.dylib`_xpc_objc_main + 775
frame #50: 0x00007fffb26872e4 libxpc.dylib`xpc_main + 494
frame #51: 0x00007fffb05a57eb ViewBridge`-[NSXPCSharedListener resume] + 16
frame #52: 0x00007fffb057eeb9 ViewBridge`NSViewServiceApplicationMain + 3022
frame #53: 0x0000000101cc93a2 com.apple.dt.Xcode.PlaygroundStub-macosx`main + 34
frame #54: 0x00007fffb2424255 libdyld.dylib`start + 1
答案 0 :(得分：1)
let tracker = NSTrackingArea(rect: view, options: options, owner: self.view, userInfo: nil)
实际应该是：
let tracker = NSTrackingArea(rect: CGRect(x:0,y:0, width: 1080, height: 1080), options: options, owner: self.view, userInfo: nil)
我将rect分配给SKScene而不是CGRect;这样一个愚蠢的错误。
答案 1 :(得分：0)
当我在复制功能后错过了圆括号时，我也遇到了同样的错误。 如果我们在复制后错过（）括号，则会在操场上给与相同的错误。 var samobj1 = samObj.copy（）as！样本