How can I spawn a random (CLASS SPRITENODE) enemy into my gamescene - swift

Question

I am new is swift programming. I want to spawn an enemies into a random positions using a Class node. I tried to search a code for a random spawning of an enemies but it seems it is irrelevant for my code.
Here is the code I searched for the random spawning.
import SpriteKit
class GameScene: SKScene {
let player = SKSpriteNode(imageNamed:"spacemonkey_fly02")
override func didMoveToView(view: SKView) {
player.position = CGPoint(x:frame.size.width * 0.1, y: frame.size.height * 0.5)
addChild(player)
backgroundColor = SKColor.blackColor()
runAction(SKAction.repeatActionForever(
SKAction.sequence([
SKAction.runBlock(spawnEnemy),
SKAction.waitForDuration(1.0)])))
}
func random() -> CGFloat {
return CGFloat(Float(arc4random()) / 0xFFFFFFFF)
}
func random(#min: CGFloat, max: CGFloat) -> CGFloat {
return random() * (max - min) + min
}
func spawnEnemy() {
let enemy = SKSpriteNode(imageNamed: "boss_ship")
enemy.name = "enemy"
enemy.position = CGPoint(x: frame.size.width, y: frame.size.height * random(min: 0, max: 1))
addChild(enemy)
}
}
Here is the Class I made that I want to spawn randomly in my gamescene
import SpriteKit
class Meteor: SKSpriteNode, GameSprite {
var textureAtlas:SKTextureAtlas = SKTextureAtlas(named:"meteor.atlas")
var meteorAnimation = SKAction()
func spawn(parentNode: SKNode, position: CGPoint, size: CGSize = CGSize(width: 30, height: 30)) {
parentNode.addChild(self)
meteorRotation()
self.size = size
self.position = position
self.texture = textureAtlas.textureNamed("meteor-1.png")
self.physicsBody = SKPhysicsBody(texture: textureAtlas.textureNamed("meteor-1.png"), size: size)
self.physicsBody = SKPhysicsBody(circleOfRadius: size.width / 2)
self.physicsBody?.affectedByGravity = true
self.runAction(meteorAnimation)
}
func meteorRotation() {
let meteorCycle = SKAction.rotateByAngle(4, duration: 2);
meteorAnimation = SKAction.repeatActionForever(meteorCycle)
}
func onTap() {
//self.physicsBody?.affectedByGravity = false
self.physicsBody?.dynamic = false
self.physicsBody?.categoryBitMask = 0
let crashAnimation = SKAction.group([
SKAction.fadeAlphaTo(0, duration: 0.2),
SKAction.scaleTo(1.5, duration: 0.2),
SKAction.moveBy(CGVector(dx: 0, dy: 25), duration: 0.2)
])
let resetAfterCrashed = SKAction.runBlock {
self.position.y = 5000
self.alpha = 1
self.xScale = 1
self.yScale = 1
}
let crashSequence = SKAction.sequence([
crashAnimation,
resetAfterCrashed
])
self.runAction(crashSequence)
}
}
Is it possible to use the code I searched for a class node?

Answer 1

I tried to modify the random spawning code you found to use your meteor class. I took out any lines that didn't involve the meteors, so you'll need to add your world, earth, and field code as you sent me. Give this a shot and let me know if it works out:
class GameScene: SKScene {
override func didMoveToView(view: SKView) {
backgroundColor = SKColor.blackColor()
runAction(SKAction.repeatActionForever(
SKAction.sequence([
SKAction.runBlock(spawnEnemy),
SKAction.waitForDuration(1.0)])))
}
func random() -> CGFloat {
return CGFloat(Float(arc4random()) / 0xFFFFFFFF)
}
func random(#min: CGFloat, max: CGFloat) -> CGFloat {
return random() * (max - min) + min
}
func spawnEnemy() {
let newMeteor = Meteor()
let meteorPosition = CGPoint(x: frame.size.width, y: frame.size.height * random(min: 0, max: 1))
newMeteor.spawn(world, meteorPosition)
}
}