Keep a backup of previous save. Added Continue from save to Menu.

4 年前 · 5c50ddcf
--- a/UOP1_Project/Assets/Scenes/Menus/MainMenu.unity
+++ b/UOP1_Project/Assets/Scenes/Menus/MainMenu.unity
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--- a/UOP1_Project/Assets/Scripts/SaveSystem/FileManager.cs
+++ b/UOP1_Project/Assets/Scripts/SaveSystem/FileManager.cs
 			return false;
 		}
 	}
+
+	public static bool MoveFile(string fileName, string newFileName)
+	{
+		var fullPath = Path.Combine(Application.persistentDataPath, fileName);
+		var newFullPath = Path.Combine(Application.persistentDataPath, newFileName);
+
+		try
+		{
+			if (File.Exists(newFullPath))
+			{
+				File.Delete(newFullPath);
+			}
+			File.Move(fullPath, newFullPath);
+		}
+		catch (Exception e)
+		{
+			Debug.LogError($"Failed to move file from {fullPath} to {newFullPath} with exception {e}");
+			return false;
+		}
+
+		return true;
+	}
 }
--- a/UOP1_Project/Assets/Scripts/SaveSystem/SaveSystem.cs
+++ b/UOP1_Project/Assets/Scripts/SaveSystem/SaveSystem.cs
 	[SerializeField] private Inventory _playerInventory;

 	public string saveFilename = "save.chop";
+	public string backupSaveFilename = "save.chop.bak";
 	public Save saveData = new Save();

 	void OnEnable()
 		SaveDataToDisk();
 	}

-	public void LoadSaveDataFromDisk()
+	public bool LoadSaveDataFromDisk()
+			return true;
+
+		return false;
 	}

 	public IEnumerator LoadSavedInventory()
 			saveData._itemStacks.Add(new SerializedItemStack(itemStack.Item.Guid, itemStack.Amount));
 		}

-		if (FileManager.WriteToFile(saveFilename, saveData.ToJson()))
+		if (FileManager.MoveFile(saveFilename, backupSaveFilename))
-			Debug.Log("Save successful");
+			if (FileManager.WriteToFile(saveFilename, saveData.ToJson()))
+    		{
+    			Debug.Log("Save successful");
+    		}
 		}
 	}
 }
--- a/UOP1_Project/Assets/Scripts/SceneManagement/StartGame.cs
+++ b/UOP1_Project/Assets/Scripts/SceneManagement/StartGame.cs
-using System.Collections;
+using System;
+using System.Collections;
+using UnityEngine.UI;

 /// <summary>
 /// This class contains the function to call when play button is pressed
 	public bool showLoadScreen;

 	public SaveSystem saveSystem;
+	public Text startText;
+
+	public Button resetSaveDataButton;
+	private bool _hasSaveData;
+
+	private void Start()
+	{
+		_hasSaveData = saveSystem.LoadSaveDataFromDisk();
+		if (_hasSaveData)
+		{
+			startText.text = "Continue";
+			resetSaveDataButton.gameObject.SetActive(true);
+		}
+		else
+		{
+			resetSaveDataButton.gameObject.SetActive(false);
+		}
+	}
-		onPlayButtonPress.RaiseEvent(locationsToLoad, showLoadScreen);
+		if (!_hasSaveData)
+		{
+			//Start new game
+			onPlayButtonPress.RaiseEvent(locationsToLoad, showLoadScreen);
+		}
+		else
+		{
+			//Load Game
+			StartCoroutine(LoadSaveGame());
+		}
-	public void OnLoadButtonPress()
+	public void OnResetSaveDataPress()
-		StartCoroutine(LoadSaveGame());
+		_hasSaveData = false;
+		startText.text = "Play";
+		resetSaveDataButton.gameObject.SetActive(false);
-		saveSystem.LoadSaveDataFromDisk();
 		yield return StartCoroutine(saveSystem.LoadSavedInventory());

 		var locationGuid = saveSystem.saveData._locationId;