Updates save state usage to catch errors

Cores/DeltaCore

@@ -1 +1 @@
-Subproject commit 64f652019405b72c2a4e3281da8d1e0514538ac3
+Subproject commit 593e5e758bf289e7d3d40f4dc37451c2f8ef791f

Cores/GBADeltaCore

@@ -1 +1 @@
-Subproject commit 06b20822c7e9d28b9b3bcc6085deec2249a14e64
+Subproject commit 4f1684a28b50e76b6f416a5bc9e0b5f95266ffa7

Cores/SNESDeltaCore

@@ -1 +1 @@
-Subproject commit 2c913a2b2910711fa1c12be31b00f2205170c935
+Subproject commit 29db4715fcca05791a5de4123c586a5c1590d0e0

Delta.xcodeproj/xcshareddata/xcschemes/Delta.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0710"
+   LastUpgradeVersion = "0730"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "NO"

Delta/Emulation/EmulationViewController.swift

@@ -532,7 +532,18 @@ extension EmulationViewController: SaveStatesViewControllerDelegate
     
     func saveStatesViewController(saveStatesViewController: SaveStatesViewController, loadSaveState saveState: SaveStateType)
     {
-        self.emulatorCore.loadSaveState(saveState)
+        do
+        {
+            try self.emulatorCore.loadSaveState(saveState)
+        }
+        catch EmulatorCore.SaveStateError.doesNotExist
+        {
+            print("Save State \(saveState.name) does not exist.")
+        }
+        catch let error as NSError
+        {
+            print(error)
+        }
         
         self.updateCheats()
         

Delta/Game Selection/GamesViewController.swift

@@ -9,6 +9,8 @@
 import UIKit
 import CoreData
 
+import DeltaCore
+
 import Roxas
 
 class GamesViewController: UIViewController
@@ -132,7 +134,20 @@ class GamesViewController: UIViewController
                 {
                     destinationViewController.emulatorCore.startEmulation()
                     destinationViewController.emulatorCore.pauseEmulation()
-                    destinationViewController.emulatorCore.loadSaveState(saveState)
+                    
+                    do
+                    {
+                        try destinationViewController.emulatorCore.loadSaveState(saveState)
+                    }
+                    catch EmulatorCore.SaveStateError.doesNotExist
+                    {
+                        print("Save State \(saveState.name) does not exist.")
+                    }
+                    catch let error as NSError
+                    {
+                        print(error)
+                    }
+                    
                 }
             }
         }

Delta/Pause Menu/Save States/SaveStatesViewController.swift

@@ -427,7 +427,19 @@ private extension SaveStatesViewController
         // Load the save state we stored a reference to
         emulatorCore.startEmulation()
         emulatorCore.pauseEmulation()
-        emulatorCore.loadSaveState(saveState)
+        
+        do
+        {
+            try emulatorCore.loadSaveState(saveState)
+        }
+        catch EmulatorCore.SaveStateError.doesNotExist
+        {
+            print("Save State \(saveState.name) does not exist.")
+        }
+        catch let error as NSError
+        {
+            print(error)
+        }
         
         // Re-enable video rendering
         emulatorCore.videoManager.enabled = true
@@ -542,7 +554,19 @@ extension SaveStatesViewController: UIViewControllerPreviewingDelegate
             
             emulationViewController.emulatorCore.startEmulation()
             emulationViewController.emulatorCore.pauseEmulation()
-            emulationViewController.emulatorCore.loadSaveState(saveState)
+            
+            do
+            {
+                try emulationViewController.emulatorCore.loadSaveState(saveState)
+            }
+            catch EmulatorCore.SaveStateError.doesNotExist
+            {
+                print("Save State \(saveState.name) does not exist.")
+            }
+            catch let error as NSError
+            {
+                print(error)
+            }
         }
         
         return emulationViewController