在swift 4.0中添加多个相同的SKSpriteNode()

import SpriteKit

// 创建一个场景
let scene = SKScene(size: CGSize(width: 500, height: 500))

// 创建一个数组来存储多个相同的SKSpriteNode
var spriteNodes = [SKSpriteNode]()

// 循环添加多个相同的SKSpriteNode
for _ in 1...5 {
    let spriteNode = SKSpriteNode(color: .red, size: CGSize(width: 50, height: 50))
    spriteNode.position = CGPoint(x: CGFloat.random(in: 0...scene.size.width), y: CGFloat.random(in: 0...scene.size.height))
    spriteNodes.append(spriteNode)
    scene.addChild(spriteNode)
}