XCode 6 - issue with registering a touch - xcode

Question

So far I have this app that tracks the number of hits versus misses when the user touches a moving bug on the screen. I am able to register the touches for every time the bug is missed, however not when the bug is touched. Could someone help me understand what I am doing incorrectly and perhaps point me towards a possible solution. Thank you much.
import UIKit
class myViewController2: UIViewController {
#IBOutlet weak var lblBugAmount: UILabel!
var isBuggin = false
var hits = 0
var misses = 0
#IBOutlet weak var lblMissAmount: UILabel!
#IBOutlet weak var lblHitAmount: UILabel!
override func touchesBegan(touches: (NSSet!), withEvent event: UIEvent) {
super.touchesBegan(touches, withEvent: event);
++misses
--hits
lblMissAmount.text = String(misses)
lblHitAmount.text = String(hits)
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
#IBAction func btnStop(sender: UIButton) {
isBuggin = false
super.viewDidLoad()
}
#IBOutlet var bugs : UIImageView!
#IBOutlet weak var numberOfBugsSlider: UISlider!
#IBAction func btnAnimate(sender: UIButton) {
let numberOfBugs = Int(self.numberOfBugsSlider.value) //cast to Int, otherwise slider is decimal
for loopNumber in 0...numberOfBugs+3{
// constants for the animation
let duration = 1.0
let options = UIViewAnimationOptions.CurveLinear | UIViewAnimationOptions.Autoreverse
// randomly assign a delay of 0.3 to 1s
let delay = NSTimeInterval( ((Int(rand()) % 1000)+100.0) / 1000.0)
// constants for the bugs
let size : CGFloat = CGFloat( Int(rand()) % 80 + 100.0) //sizes
let yPosition : CGFloat = CGFloat( Int(rand()) % 200 + 20.0) + 80
// create the bugs
let bugs = UIImageView()
bugs.image = UIImage(named: "bug")
bugs.frame = CGRectMake(0-size, yPosition, size, size)
self.view.addSubview(bugs)
// define the animation
UIView.animateWithDuration(duration, delay: delay, options: options, animations: {
// move the bugs
bugs.frame = CGRectMake(320, yPosition, size, size)
}, completion: { animationFinished in
// remove the bugs
bugs.removeFromSuperview()
})
}
}
#IBAction func bugs(outlet: UIView) {
++hits
--misses
lblHitAmount.text = String(hits)
lblMissAmount.text = String(misses)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
EDIT:
touchesBegan & touchesMoved
override func touchesBegan(touches: (NSSet!), withEvent event: UIEvent) {
super.touchesBegan(touches, withEvent: event);
var touch : UITouch! = touches.anyObject() as UITouch
location = touch.locationInView(self.view)
self.bugs = touch.locationInView(self.view)
}
override func touchesMoved(touches: (NSSet!), withEvent event: UIEvent) {
super.touchesBegan(touches, withEvent: event);
var touch : UITouch! = touches.anyObject() as UITouch
location = touch.locationInView(self.view)
bugs.center = location
}

Answer 1

User interaction is disabled by default for UIViews and its descendants, you have to explicitly enable it:
// create the bugs
let bugs = UIImageView()
bugs.image = UIImage(named: "bug")
bugs.frame = CGRectMake(0-size, yPosition, size, size)
bugs.userInteractionEnabled = true // <--
self.view.addSubview(bugs)