随机选择skspritenode节点从5个精灵中产生

import SpriteKit

// 创建5个精灵节点
let sprite1 = SKSpriteNode(imageNamed: "sprite1")
let sprite2 = SKSpriteNode(imageNamed: "sprite2")
let sprite3 = SKSpriteNode(imageNamed: "sprite3")
let sprite4 = SKSpriteNode(imageNamed: "sprite4")
let sprite5 = SKSpriteNode(imageNamed: "sprite5")

// 将精灵节点添加到场景中
let scene = SKScene(size: CGSize(width: 800, height: 600))
scene.addChild(sprite1)
scene.addChild(sprite2)
scene.addChild(sprite3)
scene.addChild(sprite4)
scene.addChild(sprite5)

// 生成一个0到4之间的随机整数
let randomIndex = Int.random(in: 0..<5)

// 根据随机整数选择对应的精灵节点
var selectedSprite: SKSpriteNode?
switch randomIndex {
case 0:
    selectedSprite = sprite1
case 1:
    selectedSprite = sprite2
case 2:
    selectedSprite = sprite3
case 3:
    selectedSprite = sprite4
case 4:
    selectedSprite = sprite5
default:
    break
}

// 输出选择的精灵节点
if let selectedSprite = selectedSprite {
    print("选择的精灵节点是：\(selectedSprite)")
} else {
    print("未选择任何精灵节点")
}