[F] Avoid starting multiple alarms at once

ProjectClock/AlarmActivationViewController.swift

@@ -10,6 +10,7 @@ import AVFoundation
 import CoreMotion
 
 var motion = CMMotionManager()
+var alarmStarted = false
 
 /**
  View controlling alarm activation and dismissal
@@ -120,6 +121,8 @@ class AlarmActivationViewController: UIViewController
         default:
             print("Invalid alarm type")
         }
+        
+        alarmStarted = true
     }
     
     func initFactorProblem()
@@ -167,5 +170,6 @@ class AlarmActivationViewController: UIViewController
         timer?.invalidate()
         print("Alarm solved")
         dismiss(animated: true, completion: nil)
+        alarmStarted = false
     }
 }

ProjectClock/AlarmActivator.swift

@@ -71,9 +71,9 @@ class AlarmActivator: UITabBarController
         
         alarms.localSave()
         self.alarm = alarm
-        // Segue
-        //NSLog(JSON.stringify(alarm)!)
-        performSegue(withIdentifier: "activate-alarm", sender: alarm)
+        
+        // Avoid starting duplicate alarms
+        if !alarmStarted { performSegue(withIdentifier: "activate-alarm", sender: alarm) }
     }
     
     @IBSegueAction func sendAlarm(_ coder: NSCoder) -> AlarmActivationViewController?