需要幫助將隨機數納入Swift

Question

我正在嘗試將精靈放置在屏幕上的隨機位置上，但是它顯示“ CGFloat不能轉換為Double”

var randomNumber = arc4random()

bat1 = SKSpriteNode(imageNamed: "rsz_silverbat.png")
bat1.position = CGPoint(x: self.frame.size.width * 0.1, y: self.frame.size.height * randomNumber)

Answer 1

bat1.position = CGPoint(x: self.view.frame.size.width * CGFloat(0.1), y: self.view.frame.size.height * CGFloat(randomNumber))