我正在尝试像这样在Xcode6Playground中使用SpriteKit:importUIKitimportSpriteKitimportXCPlaygroundvarspriteView=SKView(frame:CGRectMake(0,0,1334,650))spriteView.backgroundColor=UIColor(red:0.167,green:0.165,blue:0.164,alpha:1.0)letrootScene=SKScene()letrect=SKShapeNode(rect:CGRectMake(10,10,100,100))rect.fillCo