Simplified save system to not use slots. A full history of save points is stored, and user can rewind to previous save points.

Assets/Fungus/Scripts/Commands/LoadGame.cs

@@ -1,36 +0,0 @@
-// This code is part of the Fungus library (http://fungusgames.com) maintained by Chris Gregan (http://twitter.com/gofungus).
-// It is released for free under the MIT open source license (https://github.com/snozbot/fungus/blob/master/LICENSE)
-
-using UnityEngine;
-
-namespace Fungus
-{
-    [CommandInfo("Variable", 
-                 "Load Game", 
-                 "Loads a previously saved game. The original scene is loaded and the resume block is executed.")]
-    public class LoadGame : Command
-    {
-        [SerializeField] protected IntegerData saveSlot = new IntegerData(0);
-
-        #region Public members
-
-        public override void OnEnter()
-        {
-            var saveManager = FungusManager.Instance.SaveManager;
-
-            saveManager.Load(saveSlot.Value);
-        }
-
-        public override string GetSummary()
-        {
-            return saveSlot.Value.ToString();
-        }
-
-        public override Color GetButtonColor()
-        {
-            return new Color32(235, 191, 217, 255);
-        }
-
-        #endregion
-    }
-}

Assets/Fungus/Scripts/Commands/SavePoint.cs

@@ -14,29 +14,28 @@ namespace Fungus
     {
         [SerializeField] protected string saveKey;
 
-        [SerializeField] protected string description;
+        [SerializeField] protected string saveDescription;
 
-        [SerializeField] protected bool saveNow;
+        [SerializeField] protected bool resumeFromHere = true;
 
         #region Public members
 
+        public string SaveKey { get { return saveKey; } }
+
+        public bool ResumeFromHere { get { return resumeFromHere; } }
+
         public override void OnEnter()
         {
             var saveManager = FungusManager.Instance.SaveManager;
 
-            saveManager.PopulateSaveBuffer(saveKey, description);
-
-            if (saveNow)
-            {
-                saveManager.Save();
-            }
+            saveManager.AddSavePoint(saveKey, saveDescription);
 
             Continue();
         }
 
         public override string GetSummary()
         {
-            return saveKey;
+            return saveKey + " : " + saveDescription;
         }
 
         public override Color GetButtonColor()

Assets/Fungus/Scripts/Components/GameSaver.cs

@@ -1,31 +0,0 @@
-using UnityEngine;
-using System.Collections;
-using System.Collections.Generic;
-using UnityEngine.SceneManagement;
-
-namespace Fungus
-{
-    public class GameSaver : MonoBehaviour 
-    {
-        [SerializeField] protected string startScene = "";
-
-        [SerializeField] protected List<Flowchart> flowcharts = new List<Flowchart>();
-
-        #region Public methods
-
-        public List<Flowchart> Flowcharts { get { return flowcharts; } }
-
-        public virtual void Save()
-        {
-            var saveManager = FungusManager.Instance.SaveManager;
-            saveManager.Save();
-        }
-
-        public virtual void LoadScene(string sceneName)
-        {
-            SceneManager.LoadScene(sceneName);
-        }
-
-        #endregion
-    }
-}

Assets/Fungus/Scripts/Components/SaveGameHelper.cs

@@ -0,0 +1,61 @@
+using UnityEngine;
+using UnityEngine.UI;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine.SceneManagement;
+
+namespace Fungus
+{
+    public class SaveGameHelper : MonoBehaviour 
+    {
+        [SerializeField] protected string startScene = "";
+
+        [SerializeField] protected SaveGameObjects saveGameObjects = new SaveGameObjects();
+
+        protected virtual void OnEnable()
+        {
+            SaveSignals.OnGameSave += OnGameSave;
+        }
+
+        protected virtual void OnDisable()
+        {
+            SaveSignals.OnGameSave -= OnGameSave;
+        }
+
+        protected virtual void OnGameSave(string saveKey, string saveDescription)
+        {
+            // TODO: Play sound effect
+        }
+
+        #region Public methods
+
+        public SaveGameObjects SaveGameObjects { get { return saveGameObjects; } }
+
+        public virtual void Save()
+        {
+            var saveManager = FungusManager.Instance.SaveManager;
+            saveManager.Save();
+        }
+
+        public virtual void Load()
+        {
+            var saveManager = FungusManager.Instance.SaveManager;
+            saveManager.Load();
+        }
+
+        public virtual void Rewind()
+        {
+            var saveManager = FungusManager.Instance.SaveManager;
+            saveManager.Rewind();
+        }
+
+        public virtual void Restart()
+        {
+            var saveManager = FungusManager.Instance.SaveManager;
+            saveManager.Clear();
+            SceneManager.LoadScene(startScene);
+        }
+
+        #endregion
+    }
+}

Assets/Fungus/Scripts/Components/SaveManager.cs

@@ -5,112 +5,66 @@ namespace Fungus
 {
     public class SaveManager : MonoBehaviour 
     {
-        const string ActiveSlotKey = "active_slot";
+        const string DefaultSaveDataKey = "save_data";
 
-        const string SlotKeyFormat = "slot{0}";
+        protected static SaveHistory saveHistory = new SaveHistory();
 
-        protected string saveBuffer = "";
-
-        protected virtual string FormatSaveKey(int slot)
-        {
-            return string.Format(SlotKeyFormat, slot);
-        }
-
-        protected virtual void StoreJSONData(string key, string jsonData)
+        protected virtual void ReadSaveHistory(string saveDataKey)
         {
-            if (key.Length > 0)
+            var historyData = PlayerPrefs.GetString(saveDataKey);
+            if (!string.IsNullOrEmpty(historyData))
             {
-                PlayerPrefs.SetString(key, jsonData);
+                var tempSaveHistory = JsonUtility.FromJson<SaveHistory>(historyData);
+                if (tempSaveHistory != null)
+                {
+                    saveHistory = tempSaveHistory;
+                }
             }
         }
 
-        protected virtual string LoadJSONData(string key)
+        protected virtual void WriteSaveHistory(string saveDataKey)
         {
-            if (key.Length > 0)
+            var historyData = JsonUtility.ToJson(saveHistory, true);
+            if (!string.IsNullOrEmpty(historyData))
             {
-                return PlayerPrefs.GetString(key);
+                PlayerPrefs.SetString(saveDataKey, historyData);
+                PlayerPrefs.Save();
             }
-
-            return "";
         }
 
         #region Public members
 
-        public virtual int ActiveSlot
+        public virtual void Save(string saveDataKey = DefaultSaveDataKey)
         {
-            get
-            {
-                return PlayerPrefs.GetInt(ActiveSlotKey);
-            }
-            set
-            {
-                PlayerPrefs.SetInt(ActiveSlotKey, value);
-            }
+            WriteSaveHistory(saveDataKey);
         }
-
-        public virtual void Save()
+ 
+        public void Load(string saveDataKey = DefaultSaveDataKey)
         {
-            if (saveBuffer == "")
+            ReadSaveHistory(saveDataKey);
+            if (saveHistory != null)
             {
-                // Nothing to save
-                return;
+                saveHistory.LoadLatestSavePoint();
             }
-
-            var key = FormatSaveKey(ActiveSlot);
-
-            PlayerPrefs.SetString(key, saveBuffer);
-
-            saveBuffer = "";
         }
 
-        public virtual bool SlotExists(int slot)
+        public virtual void AddSavePoint(string saveKey, string saveDescription)
         {
-            var key = FormatSaveKey(slot);
-
-            if (PlayerPrefs.HasKey(key) &&
-                PlayerPrefs.GetString(key) != "")
-            {
-                return false;
-            }
-
-            return true;
+            saveHistory.AddSavePoint(saveKey, saveDescription);
         }
 
-        public virtual void Load(int slot)
+        public virtual void Rewind()
         {
-            ActiveSlot = slot;
-
-            var key = FormatSaveKey(slot);
-
-            var saveDataJSON = LoadJSONData(key);
-            if (saveDataJSON != "")
+            if (saveHistory.NumSavePoints > 0)
             {
-                SavePointData.Decode(saveDataJSON);
+                saveHistory.RemoveSavePoint();
+                saveHistory.LoadLatestSavePoint();
             }
         }
 
-        public virtual void LoadNewGame(int slot, string saveDescription)
-        {
-            var key = FormatSaveKey(slot);
-
-            var saveDataJSON = SavePointData.EncodeNewGame(saveDescription, SceneManager.GetActiveScene().name);
-
-            // Create a new save entry
-            PlayerPrefs.SetString(key, saveDataJSON);
-
-            SavePointLoaded.NotifyEventHandlers("new_game");
-        }
-
-        public virtual void Delete(int slot)
-        {
-            var key = FormatSaveKey(slot);
-            PlayerPrefs.DeleteKey(key);
-        }
-
-        public virtual void PopulateSaveBuffer(string saveKey, string description)
+        public virtual void Clear()
         {
-            saveBuffer = SavePointData.Encode(saveKey, description, SceneManager.GetActiveScene().name);
-            Debug.Log(saveBuffer);
+            saveHistory.Clear();
         }
 
         #endregion

Assets/Fungus/Scripts/SavePoints/SaveGameObjects.cs

@@ -0,0 +1,17 @@
+using UnityEngine;
+using System.Collections.Generic;
+
+namespace Fungus
+{
+    [System.Serializable]
+    public class SaveGameObjects
+    {
+        [SerializeField] protected List<Flowchart> flowcharts = new List<Flowchart>();
+
+        #region Public methods
+
+        public List<Flowchart> Flowcharts { get { return flowcharts; } }
+
+        #endregion
+    }
+}

Assets/Fungus/Scripts/SavePoints/SaveGameObjects.cs.meta

@@ -1,6 +1,6 @@
 fileFormatVersion: 2
-guid: 60a19f3f0e9b84b14b2b310a296de1b1
-timeCreated: 1479485750
+guid: f9c00b58b03474e37b54a4b39ed6c8ee
+timeCreated: 1480503989
 licenseType: Free
 MonoImporter:
   serializedVersion: 2

Assets/Fungus/Scripts/SavePoints/SaveHistory.cs

@@ -0,0 +1,58 @@
+using UnityEngine;
+using System.Collections.Generic;
+using Fungus;
+using UnityEngine.SceneManagement;
+
+namespace Fungus
+{
+    [System.Serializable]
+    public class SaveHistory
+    {
+        /// <summary>
+        /// Version number of current save data format.
+        /// </summary>
+        protected const int SaveDataVersion = 1;
+
+        [SerializeField] protected int version = SaveDataVersion;
+
+        [SerializeField] protected List<string> savePoints = new List<string>();
+
+        #region Public methods
+
+        public int NumSavePoints { get { return savePoints.Count; } }
+
+        public void AddSavePoint(string saveKey, string saveDescription)
+        {
+            string sceneName = SceneManager.GetActiveScene().name;
+            var savePointData = SavePointData.Encode(saveKey, saveDescription, sceneName);
+            savePoints.Add(savePointData);
+        }
+
+        /// <summary>
+        /// Removes the latest save point.
+        /// </summary>
+        public void RemoveSavePoint()
+        {
+            if (savePoints.Count > 0)
+            {
+                savePoints.RemoveAt(savePoints.Count - 1);
+            }
+        }
+
+        public void LoadLatestSavePoint()
+        {
+            if (savePoints.Count > 0)
+            {
+                var savePointData = savePoints[savePoints.Count - 1];
+                SavePointData.Decode(savePointData);
+            }
+        }
+
+        public void Clear()
+        {
+            savePoints.Clear();
+        }
+
+        #endregion
+    }
+}

Assets/Fungus/Scripts/SavePoints/SaveHistory.cs.meta

@@ -1,6 +1,6 @@
 fileFormatVersion: 2
-guid: 4bd5b7f5cc3944217aa05a6fa8552baf
-timeCreated: 1478530280
+guid: fd859426b9f7445b5a1d7281f4943bb8
+timeCreated: 1480422606
 licenseType: Free
 MonoImporter:
   serializedVersion: 2

Assets/Fungus/Scripts/SavePoints/SavePointData.cs

@@ -7,12 +7,6 @@ namespace Fungus
     [System.Serializable]
     public class SavePointData
     {
-        /// <summary>
-        /// Version number of current save data format.
-        /// </summary>
-        protected const int SavePointDataVersion = 0;
-
-        [SerializeField] protected int version;
         [SerializeField] protected string saveKey;
         [SerializeField] protected string description;
         [SerializeField] protected string sceneName;
@@ -36,19 +30,37 @@ namespace Fungus
                 FlowchartData.Decode(flowchartData);
             }
 
-            SavePointLoaded.NotifyEventHandlers(savePointData.saveKey);
-
-            ExecuteBlocks(savePointData);
+            ExecuteBlocks(savePointData.saveKey);
         }
 
-        protected static void ExecuteBlocks(SavePointData savePointData)
+        protected static void ExecuteBlocks(string saveKey)
         {
+            SavePointLoaded.NotifyEventHandlers(saveKey);
+
+            // Execute any block containing a SavePoint command matching the save key, with Resume From Here enabled
+            var savePoints = Object.FindObjectsOfType<SavePoint>();
+            for (int i = 0; i < savePoints.Length; i++)
+            {
+                var savePoint = savePoints[i];
+                if (savePoint.ResumeFromHere &&
+                    string.Compare(savePoint.SaveKey, saveKey, true) == 0)
+                {
+                    int index = savePoint.CommandIndex;
+                    var block = savePoint.ParentBlock;
+                    var flowchart = savePoint.GetFlowchart();
+                    flowchart.ExecuteBlock(block, index + 1);
+
+                    // Assume there's only one SavePoint using this key
+                    break;
+                }
+            }
+                
             // Execute any block containing a Label matching the save key
             var labels = Object.FindObjectsOfType<Label>();
             for (int i = 0; i < labels.Length; i++)
             {
                 var label = labels[i];
-                if (string.Compare(label.Key, savePointData.SaveKey, true) == 0)
+                if (string.Compare(label.Key, saveKey, true) == 0)
                 {
                     int index = label.CommandIndex;
                     var block = label.ParentBlock;
@@ -62,7 +74,6 @@ namespace Fungus
         {
             var savePointData = new SavePointData();
 
-            savePointData.version = 1;
             savePointData.saveKey = _saveKey;
             savePointData.description = _description;
             savePointData.sceneName = _sceneName;
@@ -79,7 +90,7 @@ namespace Fungus
 
         public static string EncodeNewGame(string _description, string _sceneName)
         {
-            var savePointData = Create("new_game", _description, _sceneName);
+            var savePointData = Create("start_game", _description, _sceneName);
 
             return JsonUtility.ToJson(savePointData, true);
         }
@@ -88,16 +99,16 @@ namespace Fungus
         {
             var savePointData = Create(_saveKey, _description, _sceneName);
                 
-            var gameSaver = GameObject.FindObjectOfType<GameSaver>();
-            if (gameSaver == null)
+            var saveGameHelper = GameObject.FindObjectOfType<SaveGameHelper>();
+            if (saveGameHelper == null)
             {
-                Debug.LogError("Failed to find SaveHelper object in scene");
+                Debug.LogError("Failed to find SaveGameHelper object in scene");
                 return null;
             }
 
-            for (int i = 0; i < gameSaver.Flowcharts.Count; i++)
+            for (int i = 0; i < saveGameHelper.SaveGameObjects.Flowcharts.Count; i++)
             {
-                var flowchart = gameSaver.Flowcharts[i];
+                var flowchart = saveGameHelper.SaveGameObjects.Flowcharts[i];
                 var flowchartData = FlowchartData.Encode(flowchart);
                 savePointData.FlowchartDatas.Add(flowchartData);
             }

Assets/Fungus/Scripts/Signals/SaveSignals.cs

@@ -0,0 +1,23 @@
+// This code is part of the Fungus library (http://fungusgames.com) maintained by Chris Gregan (http://twitter.com/gofungus).
+// It is released for free under the MIT open source license (https://github.com/snozbot/fungus/blob/master/LICENSE)
+
+namespace Fungus
+{
+    /// <summary>
+    /// Save manager signalling system.
+    /// You can use this to be notified about various events in the save game system.
+    /// </summary>
+    public static class SaveSignals
+    {
+        #region Public members
+
+        /// <summary>
+        /// GameSave signal. Sent when the game is saved.
+        /// </summary>
+        public static event GameSaveHandler OnGameSave;
+        public delegate void GameSaveHandler(string saveKey, string saveDescription);
+        public static void DoGameSave(string saveKey, string saveDescription) { if (OnGameSave != null) OnGameSave(saveKey, saveDescription); }
+
+        #endregion
+    }
+}

Assets/Fungus/Scripts/Signals/SaveSignals.cs.meta

@@ -0,0 +1,12 @@
+fileFormatVersion: 2
+guid: a47447a63010d4230884d0978a26f097
+timeCreated: 1474988491
+licenseType: Free
+MonoImporter:
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/FungusExamples/SaveGame/Menu.unity

@@ -335,7 +335,7 @@ MonoBehaviour:
     m_HorizontalOverflow: 0
     m_VerticalOverflow: 0
     m_LineSpacing: 1
-  m_Text: New Game
+  m_Text: Save Slot
 --- !u!222 &274184161
 CanvasRenderer:
   m_ObjectHideFlags: 0
@@ -409,9 +409,7 @@ MonoBehaviour:
     m_HorizontalOverflow: 0
     m_VerticalOverflow: 0
     m_LineSpacing: 1
-  m_Text: 'New Game
-
-'
+  m_Text: Save Slot
 --- !u!222 &342006600
 CanvasRenderer:
   m_ObjectHideFlags: 0
@@ -485,7 +483,7 @@ MonoBehaviour:
     m_HorizontalOverflow: 0
     m_VerticalOverflow: 0
     m_LineSpacing: 1
-  m_Text: New Game
+  m_Text: Save Slot
 --- !u!222 &554677439
 CanvasRenderer:
   m_ObjectHideFlags: 0
@@ -600,6 +598,13 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 60a19f3f0e9b84b14b2b310a296de1b1, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  quickSaveSlotDesc: Quick Save Slot
+  emptySlotDesc: Empty Slot
+  newSlotDesc: New Game
+  slotTexts:
+  - {fileID: 342006599}
+  - {fileID: 274184160}
+  - {fileID: 554677438}
 --- !u!1 &829939242
 GameObject:
   m_ObjectHideFlags: 1
@@ -1500,7 +1505,7 @@ GameObject:
   - 114: {fileID: 1744305197}
   - 114: {fileID: 1744305196}
   m_Layer: 5
-  m_Name: Slot3
+  m_Name: Slot2
   m_TagString: Untagged
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
@@ -1643,21 +1648,19 @@ MonoBehaviour:
   m_Name: 
   m_EditorClassIdentifier: 
   version: 1
-  scrollPos: {x: 0, y: 0}
+  scrollPos: {x: 3.5126438, y: 1.8458961}
   variablesScrollPos: {x: 0, y: 0}
   variablesExpanded: 1
   blockViewHeight: 400
-  zoom: 1
+  zoom: 0.9922716
   scrollViewRect:
     serializedVersion: 2
     x: -343
     y: -340
     width: 1114
     height: 859
-  selectedBlocks:
-  - {fileID: 1902192250}
-  selectedCommands:
-  - {fileID: 1902192253}
+  selectedBlocks: []
+  selectedCommands: []
   variables: []
   description: 
   stepPause: 0
@@ -1697,7 +1700,7 @@ MonoBehaviour:
   - {fileID: 1902192253}
 --- !u!114 &1902192251
 MonoBehaviour:
-  m_ObjectHideFlags: 0
+  m_ObjectHideFlags: 2
   m_PrefabParentObject: {fileID: 0}
   m_PrefabInternal: {fileID: 0}
   m_GameObject: {fileID: 1902192248}
@@ -1723,7 +1726,7 @@ Transform:
   m_RootOrder: 1
 --- !u!114 &1902192253
 MonoBehaviour:
-  m_ObjectHideFlags: 0
+  m_ObjectHideFlags: 2
   m_PrefabParentObject: {fileID: 0}
   m_PrefabInternal: {fileID: 0}
   m_GameObject: {fileID: 1902192248}

Assets/FungusExamples/SaveGame/SaveExample.unity.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: a440424aaf73a4ff3bf88e9d1eb3a43c
+timeCreated: 1480421523
+licenseType: Free
+DefaultImporter:
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/FungusExamples/SaveGame/SavePicker.cs

@@ -1,34 +0,0 @@
-using UnityEngine;
-using System.Collections;
-
-namespace Fungus
-{
-    public class SavePicker : MonoBehaviour
-    {
-        [SerializeField] protected string newGameDescription = "Playing";
-
-        #region Public methods
-
-        public virtual void Select(int slot)
-        {
-            var saveManager = FungusManager.Instance.SaveManager;
-
-            if (saveManager.SlotExists(slot))
-            {
-                saveManager.Load(slot);
-            }
-            else
-            {
-                saveManager.LoadNewGame(slot, newGameDescription);
-            }
-        }
-
-        public virtual void Delete(int slot)
-        {
-            var saveManager = FungusManager.Instance.SaveManager;
-            saveManager.Delete(slot);
-        }
-
-        #endregion
-    }
-}

Assets/FungusExamples/SaveGame/SceneA.unity

@@ -371,8 +371,7 @@ MonoBehaviour:
   m_Name: 
   m_EditorClassIdentifier: 
   parentBlock: {fileID: 27697880}
-  saveKeys:
-  - save_1
+  saveKey: 
 --- !u!114 &27697880
 MonoBehaviour:
   m_ObjectHideFlags: 2
@@ -444,7 +443,7 @@ MonoBehaviour:
   m_EditorClassIdentifier: 
   nodeRect:
     serializedVersion: 2
-    x: 419
+    x: 420
     y: 66
     width: 120
     height: 40

ProjectSettings/ProjectSettings.asset

@@ -29,6 +29,7 @@ PlayerSettings:
   m_StackTraceTypes: 010000000100000001000000010000000100000001000000
   iosShowActivityIndicatorOnLoading: -1
   androidShowActivityIndicatorOnLoading: -1
+  tizenShowActivityIndicatorOnLoading: -1
   iosAppInBackgroundBehavior: 0
   displayResolutionDialog: 1
   iosAllowHTTPDownload: 1
@@ -44,6 +45,7 @@ PlayerSettings:
   runInBackground: 0
   captureSingleScreen: 0
   Override IPod Music: 0
+  muteOtherAudioSources: 0
   Prepare IOS For Recording: 0
   submitAnalytics: 1
   usePlayerLog: 1
@@ -144,6 +146,7 @@ PlayerSettings:
   tvOSSmallIconLayers: []
   tvOSLargeIconLayers: []
   tvOSTopShelfImageLayers: []
+  tvOSTopShelfImageWideLayers: []
   iOSLaunchScreenType: 0
   iOSLaunchScreenPortrait: {fileID: 0}
   iOSLaunchScreenLandscape: {fileID: 0}