Physics body not showing only for one sprite? - swift

Question

The problem I have is when I initialize my sprite, I have another sprite defined the same way and that sprite shows that it has a physics body because I see the green outline on that, but this sprite below has no green outline on it, I think that there is a problem when I create the SKPhysicsBody or maybe because I create 13 duplicates of the same sprite at random positions as shown in the second snippet of code.
#objc func CreateNewAsteroid() {
var asteroid : SKSpriteNode?
let moveAsteroidDown = SKAction.repeatForever(SKAction.moveBy(x: 0, y: -1, duration: 0.01))
let rotateAsteroid = SKAction.repeatForever(SKAction.rotate(byAngle: 25, duration: 5))
let asteroidXpos = randomNum(high: self.frame.size.width/2, low: -1 * self.frame.size.width/2)
let asteroidYpos = randomNum(high: 2.5*self.frame.size.height, low: self.frame.size.height/2)
let asteroidOrigin : CGPoint = CGPoint(x: asteroidXpos, y: asteroidYpos)
asteroid = SKSpriteNode(imageNamed: possibleAsteroidImage[Int(arc4random_uniform(4))])
asteroid?.scale(to: CGSize(width: player.size.height, height: player.size.height))
asteroid?.position = asteroidOrigin
asteroid?.run(moveAsteroidDown)
asteroid?.run(rotateAsteroid)
let asteroidRadius : CGFloat = (asteroid?.size.width)!/2
asteroid?.physicsBody? = SKPhysicsBody(rectangleOf: (asteroid?.size)!)
asteroid?.physicsBody?.categoryBitMask = asteroidCategory
asteroid?.physicsBody?.affectedByGravity = false
asteroid?.physicsBody?.isDynamic = false
asteroid?.physicsBody?.allowsRotation = false
asteroid?.physicsBody?.categoryBitMask = asteroidCategory
asteroid?.physicsBody?.collisionBitMask = 0
asteroid?.physicsBody?.contactTestBitMask = shipCategory
asteroidArray.append(asteroid!)
self.addChild(asteroid!)
}
I create 13 of the sprites like this
for _ in 0...13 {
CreateNewAsteroid()
}

Answer 1

Instead of making the SKSpriteNode asteroid an optional, make it a non-optional so it does not become a null value by deleting the ? in var asteroid : SKSpriteNode?
So you want to put var asteroid : SKSpriteNode
After making this change, some errors will show up telling you to delete some !'s and ?'s (Make sure to delete these of course).
then go to your GameViewController.swift file and add the line view.showsPhysics = true under view.showsNodeCount = true
When you are done you should see a green outline around the sprite.