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iOS

Posted by Cody Adkins
Cody Adkins
7,260 Points

Making SKSpriteNode stay on screen boundaries...

Hello, I am creating a beginners Xcode game. Seems to be a popular rookie project on Youtube. I cannot get my SKSpriteNodes to stay within the boundaries of the screen. I thought by -30 from self.view.width it would keep it inside. But it is not. Attached is the code and youtube link.

https://www.youtube.com/watch?v=CeW6SCQv--o

func spawnEnemys() { let enemy = SKSpriteNode(imageNamed: "Twister")

    let minimumValue = self.size.width/8
    let maximumValue = SELF.SIZE.WIDTH - 30

    let spawnPoint = UInt32(maximumValue - minimumValue)
    enemy.position = CGPoint(x: CGFloat(arc4random_uniform(spawnPoint)), y: self.size.height)

    let enemyAction = SKAction.moveToY(-300, duration: 3.0)
    enemy.runAction(SKAction.repeatActionForever(enemyAction))
    self.addChild(enemy)
}