Presents confirmation dialog asking user what to do if resuming paused game from GamesViewController

Cores/DeltaCore

@@ -1 +1 @@
-Subproject commit d4895367427ffed6ef1fd04e60868cf799fb3371
+Subproject commit e7c44d64678d2256af4429e8d2d39d5ffd54dc7f

Delta/Emulation/GameViewController.swift

@@ -183,13 +183,6 @@ extension GameViewController
         self.updateControllers()
     }
     
-    override func viewDidDisappear(_ animated: Bool)
-    {
-        super.viewDidDisappear(animated)
-        
-        self.emulatorCore?.pause()
-    }
-    
     // MARK: - Segues
     /// KVO
     
@@ -202,6 +195,7 @@ extension GameViewController
         case "showGamesViewController":
             let gamesViewController = (segue.destination as! UINavigationController).topViewController as! GamesViewController
             gamesViewController.theme = .dark
+            gamesViewController.activeEmulatorCore = self.emulatorCore
             
             self.updateAutoSaveState()
             

Delta/Game Selection/GameCollectionViewController.swift

@@ -8,6 +8,8 @@
 
 import UIKit
 
+import DeltaCore
+
 import Roxas
 
 class GameCollectionViewController: UICollectionViewController
@@ -25,6 +27,8 @@ class GameCollectionViewController: UICollectionViewController
         }
     }
     
+    var activeEmulatorCore: EmulatorCore?
+    
     private var dataSource: RSTFetchedResultsCollectionViewDataSource<Game>!
     private let prototypeCell = GridCollectionViewCell()
 }
@@ -128,8 +132,36 @@ extension GameCollectionViewController
     override func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath)
     {
         let cell = collectionView.cellForItem(at: indexPath)
+        let game = self.dataSource.fetchedResultsController.object(at: indexPath)
+        
+        func launchGame(clearScreen: Bool)
+        {
+            if clearScreen
+            {
+                self.activeEmulatorCore?.gameViews.forEach({ $0.inputImage = nil })
+            }
+            
             self.performSegue(withIdentifier: "unwindFromGames", sender: cell)
         }
+        
+        if game.fileURL == self.activeEmulatorCore?.game.fileURL
+        {
+            let alertController = UIAlertController(title: NSLocalizedString("Game Paused", comment: ""), message: NSLocalizedString("Would you like to resume where you left off, or restart the game?", comment: ""), preferredStyle: .alert)
+            alertController.addAction(UIAlertAction(title: NSLocalizedString("Cancel", comment: ""), style: .cancel, handler: nil))
+            alertController.addAction(UIAlertAction(title: NSLocalizedString("Resume", comment: ""), style: .default, handler: { (action) in
+                launchGame(clearScreen: false)
+            }))
+            alertController.addAction(UIAlertAction(title: NSLocalizedString("Restart", comment: ""), style: .destructive, handler: { (action) in
+                self.activeEmulatorCore?.stop()
+                launchGame(clearScreen: true)
+            }))
+            self.present(alertController, animated: true)
+        }
+        else
+        {
+            launchGame(clearScreen: true)
+        }
+    }
 }
 
 //MARK: - UICollectionViewDelegateFlowLayout -

Delta/Game Selection/GamesViewController.swift

@@ -30,6 +30,8 @@ class GamesViewController: UIViewController
         }
     }
     
+    var activeEmulatorCore: EmulatorCore?
+    
     private var pageViewController: UIPageViewController!
     private var backgroundView: RSTBackgroundView!
     private var pageControl: UIPageControl!
@@ -181,6 +183,7 @@ private extension GamesViewController
         let viewController = self.storyboard?.instantiateViewController(withIdentifier: "gameCollectionViewController") as! GameCollectionViewController
         viewController.gameCollection = self.fetchedResultsController.object(at: indexPath) as! GameCollection
         viewController.theme = self.theme
+        viewController.activeEmulatorCore = self.activeEmulatorCore
         
         return viewController
     }

Delta/Game Selection/Segues/GamesStoryboardSegue.swift

@@ -74,6 +74,8 @@ extension GamesStoryboardSegue: UIViewControllerAnimatedTransitioning
     
     func animatePresentationTransition(using transitionContext: UIViewControllerContextTransitioning)
     {
+        transitionContext.sourceViewController.beginAppearanceTransition(false, animated: true)
+        
         transitionContext.destinationView.frame = transitionContext.destinationViewFinalFrame!
         transitionContext.destinationView.transform = CGAffineTransform(scaleX: 2.0, y: 2.0)
         transitionContext.containerView.addSubview(transitionContext.destinationView)
@@ -137,6 +139,8 @@ extension GamesStoryboardSegue: UIViewControllerAnimatedTransitioning
             
             topPaddingToolbar?.removeFromSuperview()
             bottomPaddingToolbar?.removeFromSuperview()
+            
+            transitionContext.sourceViewController.endAppearanceTransition()
         }
         
         self.animator.startAnimation()
@@ -144,6 +148,8 @@ extension GamesStoryboardSegue: UIViewControllerAnimatedTransitioning
     
     func animateDismissalTransition(using transitionContext: UIViewControllerContextTransitioning)
     {
+        transitionContext.destinationViewController.beginAppearanceTransition(true, animated: true)
+        
         self.animator.addAnimations {
             transitionContext.sourceView.alpha = 0.0
             transitionContext.sourceView.transform = CGAffineTransform(scaleX: 2.0, y: 2.0)
@@ -151,6 +157,7 @@ extension GamesStoryboardSegue: UIViewControllerAnimatedTransitioning
         
         self.animator.addCompletion { (position) in
             transitionContext.completeTransition(position == .end)
+            transitionContext.destinationViewController.endAppearanceTransition()
         }
         
         self.animator.startAnimation()

Delta/Game Selection/Segues/InitialGamesStoryboardSegue.swift

@@ -68,14 +68,20 @@ extension InitialGamesStoryboardSegue: UIViewControllerAnimatedTransitioning
     
     func animatePresentationTransition(using transitionContext: UIViewControllerContextTransitioning)
     {
+        transitionContext.sourceViewController.beginAppearanceTransition(false, animated: false)
+        
         // No animation
         transitionContext.destinationView.frame = transitionContext.destinationViewFinalFrame!
         transitionContext.containerView.addSubview(transitionContext.destinationView)
         transitionContext.completeTransition(true)
+        
+        transitionContext.sourceViewController.endAppearanceTransition()
     }
     
     func animateDismissalTransition(using transitionContext: UIViewControllerContextTransitioning)
     {
+        transitionContext.destinationViewController.beginAppearanceTransition(true, animated: true)
+        
         transitionContext.destinationView.transform = CGAffineTransform(scaleX: 0.5, y: 0.5)
         transitionContext.destinationView.alpha = 0.0
         
@@ -89,6 +95,7 @@ extension InitialGamesStoryboardSegue: UIViewControllerAnimatedTransitioning
         
         self.animator.addCompletion { (position) in
             transitionContext.completeTransition(position == .end)
+            transitionContext.destinationViewController.endAppearanceTransition()
         }
         
         self.animator.startAnimation()