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Saving Unity AssetBundle From WebServer to Local Storage using AssetBundle Manager [duplicate]

Right now, it seems UnityWebRequest.GetAssetBundledownload asset to RAM and load. Is there anyway to download to hard disk to load?

This is not really complicated. Handle it like a normal file you would download from the internet but save it with the ".unity3d" extension.
1.Download the AssetBundle as a normal file by making a request with UnityWebRequest.
UnityWebRequest www = UnityWebRequest.Get(url);
yield return www.Send();
2.Retrieve the byte array data with DownloadHandler.data then save it to Application.persistentDataPath/yourfolder/filename.unity3d. Make sure that the extension is ".unity3d".
File.WriteAllBytes(handle.data, data);
That's it.
3.To load the data, use AssetBundle.LoadFromFile or AssetBundle.LoadFromFileAsync:
AssetBundleCreateRequest bundle = AssetBundle.LoadFromFileAsync(path);
If still confused, here is what the thing should look like. You may need to make some modification:
Download and Save:
IEnumerator downloadAsset()
{
string url = "http://url.net/YourAsset.unity3d";
UnityWebRequest www = UnityWebRequest.Get(url);
DownloadHandler handle = www.downloadHandler;
//Send Request and wait
yield return www.Send();
if (www.isError)
{
UnityEngine.Debug.Log("Error while Downloading Data: " + www.error);
}
else
{
UnityEngine.Debug.Log("Success");
//handle.data
//Construct path to save it
string dataFileName = "WaterVehicles";
string tempPath = Path.Combine(Application.persistentDataPath, "AssetData");
tempPath = Path.Combine(tempPath, dataFileName + ".unity3d");
//Save
save(handle.data, tempPath);
}
}
void save(byte[] data, string path)
{
//Create the Directory if it does not exist
if (!Directory.Exists(Path.GetDirectoryName(path)))
{
Directory.CreateDirectory(Path.GetDirectoryName(path));
}
try
{
File.WriteAllBytes(path, data);
Debug.Log("Saved Data to: " + path.Replace("/", "\\"));
}
catch (Exception e)
{
Debug.LogWarning("Failed To Save Data to: " + path.Replace("/", "\\"));
Debug.LogWarning("Error: " + e.Message);
}
}
Load:
IEnumerable LoadObject(string path)
{
AssetBundleCreateRequest bundle = AssetBundle.LoadFromFileAsync(path);
yield return bundle;
AssetBundle myLoadedAssetBundle = bundle.assetBundle;
if (myLoadedAssetBundle == null)
{
Debug.Log("Failed to load AssetBundle!");
yield break;
}
AssetBundleRequest request = myLoadedAssetBundle.LoadAssetAsync<GameObject>("boat");
yield return request;
GameObject obj = request.asset as GameObject;
obj.transform.position = new Vector3(0.08f, -2.345f, 297.54f);
obj.transform.Rotate(350.41f, 400f, 20f);
obj.transform.localScale = new Vector3(1.0518f, 0.998f, 1.1793f);
Instantiate(obj);
myLoadedAssetBundle.Unload(false);
}

Serialization not working on Android - Unity [duplicate]

I find the best way to save game data in Unity3D Game engine.
At first, I serialize objects using BinaryFormatter.
But I heard this way has some issues and is not suitable for save.
So, What is the best or recommended way for saving game state?
In my case, save format must be byte array.

But I heard this way has some issues and not suitable for save.
That's right. On some devices, there are issues with BinaryFormatter. It gets worse when you update or change the class. Your old settings might be lost since the classes non longer match. Sometimes, you get an exception when reading the saved data due to this.
Also, on iOS, you have to add Environment.SetEnvironmentVariable("MONO_REFLECTION_SERIALIZER", "yes"); or you will have problems with BinaryFormatter.
The best way to save is with PlayerPrefs and Json. You can learn how to do that here.
In my case, save format must be byte array
In this case, you can convert it to json then convert the json string to byte array. You can then use File.WriteAllBytes and File.ReadAllBytes to save and read the byte array.
Here is a Generic class that can be used to save data. Almost the-same as this but it does not use PlayerPrefs. It uses file to save the json data.
DataSaver class:
public class DataSaver
{
//Save Data
public static void saveData<T>(T dataToSave, string dataFileName)
{
string tempPath = Path.Combine(Application.persistentDataPath, "data");
tempPath = Path.Combine(tempPath, dataFileName + ".txt");
//Convert To Json then to bytes
string jsonData = JsonUtility.ToJson(dataToSave, true);
byte[] jsonByte = Encoding.ASCII.GetBytes(jsonData);
//Create Directory if it does not exist
if (!Directory.Exists(Path.GetDirectoryName(tempPath)))
{
Directory.CreateDirectory(Path.GetDirectoryName(tempPath));
}
//Debug.Log(path);
try
{
File.WriteAllBytes(tempPath, jsonByte);
Debug.Log("Saved Data to: " + tempPath.Replace("/", "\\"));
}
catch (Exception e)
{
Debug.LogWarning("Failed To PlayerInfo Data to: " + tempPath.Replace("/", "\\"));
Debug.LogWarning("Error: " + e.Message);
}
}
//Load Data
public static T loadData<T>(string dataFileName)
{
string tempPath = Path.Combine(Application.persistentDataPath, "data");
tempPath = Path.Combine(tempPath, dataFileName + ".txt");
//Exit if Directory or File does not exist
if (!Directory.Exists(Path.GetDirectoryName(tempPath)))
{
Debug.LogWarning("Directory does not exist");
return default(T);
}
if (!File.Exists(tempPath))
{
Debug.Log("File does not exist");
return default(T);
}
//Load saved Json
byte[] jsonByte = null;
try
{
jsonByte = File.ReadAllBytes(tempPath);
Debug.Log("Loaded Data from: " + tempPath.Replace("/", "\\"));
}
catch (Exception e)
{
Debug.LogWarning("Failed To Load Data from: " + tempPath.Replace("/", "\\"));
Debug.LogWarning("Error: " + e.Message);
}
//Convert to json string
string jsonData = Encoding.ASCII.GetString(jsonByte);
//Convert to Object
object resultValue = JsonUtility.FromJson<T>(jsonData);
return (T)Convert.ChangeType(resultValue, typeof(T));
}
public static bool deleteData(string dataFileName)
{
bool success = false;
//Load Data
string tempPath = Path.Combine(Application.persistentDataPath, "data");
tempPath = Path.Combine(tempPath, dataFileName + ".txt");
//Exit if Directory or File does not exist
if (!Directory.Exists(Path.GetDirectoryName(tempPath)))
{
Debug.LogWarning("Directory does not exist");
return false;
}
if (!File.Exists(tempPath))
{
Debug.Log("File does not exist");
return false;
}
try
{
File.Delete(tempPath);
Debug.Log("Data deleted from: " + tempPath.Replace("/", "\\"));
success = true;
}
catch (Exception e)
{
Debug.LogWarning("Failed To Delete Data: " + e.Message);
}
return success;
}
}
USAGE:
Example class to Save:
[Serializable]
public class PlayerInfo
{
public List<int> ID = new List<int>();
public List<int> Amounts = new List<int>();
public int life = 0;
public float highScore = 0;
}
Save Data:
PlayerInfo saveData = new PlayerInfo();
saveData.life = 99;
saveData.highScore = 40;
//Save data from PlayerInfo to a file named players
DataSaver.saveData(saveData, "players");
Load Data:
PlayerInfo loadedData = DataSaver.loadData<PlayerInfo>("players");
if (loadedData == null)
{
return;
}
//Display loaded Data
Debug.Log("Life: " + loadedData.life);
Debug.Log("High Score: " + loadedData.highScore);
for (int i = 0; i < loadedData.ID.Count; i++)
{
Debug.Log("ID: " + loadedData.ID[i]);
}
for (int i = 0; i < loadedData.Amounts.Count; i++)
{
Debug.Log("Amounts: " + loadedData.Amounts[i]);
}
Delete Data:
DataSaver.deleteData("players");

I know this post is old, but in case other users also find it while searching for save strategies, remember:
PlayerPrefs is not for storing game state. It is explicitly named "PlayerPrefs" to indicate its use: storing player preferences. It is essentially plain text. It can easily be located, opened, and edited by any player. This may not be a concern for all developers, but it will matter to many whose games are competitive.
Use PlayerPrefs for Options menu settings like volume sliders and graphics settings: things where you don't care that the player can set and change them at will.
Use I/O and serialization for saving game data, or send it to a server as Json. These methods are more secure than PlayerPrefs, even if you encrypt the data before saving.

Currency not saving the coins and i want to load the score [duplicate]

I find the best way to save game data in Unity3D Game engine.
At first, I serialize objects using BinaryFormatter.
But I heard this way has some issues and is not suitable for save.
So, What is the best or recommended way for saving game state?
In my case, save format must be byte array.

But I heard this way has some issues and not suitable for save.
That's right. On some devices, there are issues with BinaryFormatter. It gets worse when you update or change the class. Your old settings might be lost since the classes non longer match. Sometimes, you get an exception when reading the saved data due to this.
Also, on iOS, you have to add Environment.SetEnvironmentVariable("MONO_REFLECTION_SERIALIZER", "yes"); or you will have problems with BinaryFormatter.
The best way to save is with PlayerPrefs and Json. You can learn how to do that here.
In my case, save format must be byte array
In this case, you can convert it to json then convert the json string to byte array. You can then use File.WriteAllBytes and File.ReadAllBytes to save and read the byte array.
Here is a Generic class that can be used to save data. Almost the-same as this but it does not use PlayerPrefs. It uses file to save the json data.
DataSaver class:
public class DataSaver
{
//Save Data
public static void saveData<T>(T dataToSave, string dataFileName)
{
string tempPath = Path.Combine(Application.persistentDataPath, "data");
tempPath = Path.Combine(tempPath, dataFileName + ".txt");
//Convert To Json then to bytes
string jsonData = JsonUtility.ToJson(dataToSave, true);
byte[] jsonByte = Encoding.ASCII.GetBytes(jsonData);
//Create Directory if it does not exist
if (!Directory.Exists(Path.GetDirectoryName(tempPath)))
{
Directory.CreateDirectory(Path.GetDirectoryName(tempPath));
}
//Debug.Log(path);
try
{
File.WriteAllBytes(tempPath, jsonByte);
Debug.Log("Saved Data to: " + tempPath.Replace("/", "\\"));
}
catch (Exception e)
{
Debug.LogWarning("Failed To PlayerInfo Data to: " + tempPath.Replace("/", "\\"));
Debug.LogWarning("Error: " + e.Message);
}
}
//Load Data
public static T loadData<T>(string dataFileName)
{
string tempPath = Path.Combine(Application.persistentDataPath, "data");
tempPath = Path.Combine(tempPath, dataFileName + ".txt");
//Exit if Directory or File does not exist
if (!Directory.Exists(Path.GetDirectoryName(tempPath)))
{
Debug.LogWarning("Directory does not exist");
return default(T);
}
if (!File.Exists(tempPath))
{
Debug.Log("File does not exist");
return default(T);
}
//Load saved Json
byte[] jsonByte = null;
try
{
jsonByte = File.ReadAllBytes(tempPath);
Debug.Log("Loaded Data from: " + tempPath.Replace("/", "\\"));
}
catch (Exception e)
{
Debug.LogWarning("Failed To Load Data from: " + tempPath.Replace("/", "\\"));
Debug.LogWarning("Error: " + e.Message);
}
//Convert to json string
string jsonData = Encoding.ASCII.GetString(jsonByte);
//Convert to Object
object resultValue = JsonUtility.FromJson<T>(jsonData);
return (T)Convert.ChangeType(resultValue, typeof(T));
}
public static bool deleteData(string dataFileName)
{
bool success = false;
//Load Data
string tempPath = Path.Combine(Application.persistentDataPath, "data");
tempPath = Path.Combine(tempPath, dataFileName + ".txt");
//Exit if Directory or File does not exist
if (!Directory.Exists(Path.GetDirectoryName(tempPath)))
{
Debug.LogWarning("Directory does not exist");
return false;
}
if (!File.Exists(tempPath))
{
Debug.Log("File does not exist");
return false;
}
try
{
File.Delete(tempPath);
Debug.Log("Data deleted from: " + tempPath.Replace("/", "\\"));
success = true;
}
catch (Exception e)
{
Debug.LogWarning("Failed To Delete Data: " + e.Message);
}
return success;
}
}
USAGE:
Example class to Save:
[Serializable]
public class PlayerInfo
{
public List<int> ID = new List<int>();
public List<int> Amounts = new List<int>();
public int life = 0;
public float highScore = 0;
}
Save Data:
PlayerInfo saveData = new PlayerInfo();
saveData.life = 99;
saveData.highScore = 40;
//Save data from PlayerInfo to a file named players
DataSaver.saveData(saveData, "players");
Load Data:
PlayerInfo loadedData = DataSaver.loadData<PlayerInfo>("players");
if (loadedData == null)
{
return;
}
//Display loaded Data
Debug.Log("Life: " + loadedData.life);
Debug.Log("High Score: " + loadedData.highScore);
for (int i = 0; i < loadedData.ID.Count; i++)
{
Debug.Log("ID: " + loadedData.ID[i]);
}
for (int i = 0; i < loadedData.Amounts.Count; i++)
{
Debug.Log("Amounts: " + loadedData.Amounts[i]);
}
Delete Data:
DataSaver.deleteData("players");

I know this post is old, but in case other users also find it while searching for save strategies, remember:
PlayerPrefs is not for storing game state. It is explicitly named "PlayerPrefs" to indicate its use: storing player preferences. It is essentially plain text. It can easily be located, opened, and edited by any player. This may not be a concern for all developers, but it will matter to many whose games are competitive.
Use PlayerPrefs for Options menu settings like volume sliders and graphics settings: things where you don't care that the player can set and change them at will.
Use I/O and serialization for saving game data, or send it to a server as Json. These methods are more secure than PlayerPrefs, even if you encrypt the data before saving.

Unity3d: Values saved in Database script resets. [duplicate]

I find the best way to save game data in Unity3D Game engine.
At first, I serialize objects using BinaryFormatter.
But I heard this way has some issues and is not suitable for save.
So, What is the best or recommended way for saving game state?
In my case, save format must be byte array.

But I heard this way has some issues and not suitable for save.
That's right. On some devices, there are issues with BinaryFormatter. It gets worse when you update or change the class. Your old settings might be lost since the classes non longer match. Sometimes, you get an exception when reading the saved data due to this.
Also, on iOS, you have to add Environment.SetEnvironmentVariable("MONO_REFLECTION_SERIALIZER", "yes"); or you will have problems with BinaryFormatter.
The best way to save is with PlayerPrefs and Json. You can learn how to do that here.
In my case, save format must be byte array
In this case, you can convert it to json then convert the json string to byte array. You can then use File.WriteAllBytes and File.ReadAllBytes to save and read the byte array.
Here is a Generic class that can be used to save data. Almost the-same as this but it does not use PlayerPrefs. It uses file to save the json data.
DataSaver class:
public class DataSaver
{
//Save Data
public static void saveData<T>(T dataToSave, string dataFileName)
{
string tempPath = Path.Combine(Application.persistentDataPath, "data");
tempPath = Path.Combine(tempPath, dataFileName + ".txt");
//Convert To Json then to bytes
string jsonData = JsonUtility.ToJson(dataToSave, true);
byte[] jsonByte = Encoding.ASCII.GetBytes(jsonData);
//Create Directory if it does not exist
if (!Directory.Exists(Path.GetDirectoryName(tempPath)))
{
Directory.CreateDirectory(Path.GetDirectoryName(tempPath));
}
//Debug.Log(path);
try
{
File.WriteAllBytes(tempPath, jsonByte);
Debug.Log("Saved Data to: " + tempPath.Replace("/", "\\"));
}
catch (Exception e)
{
Debug.LogWarning("Failed To PlayerInfo Data to: " + tempPath.Replace("/", "\\"));
Debug.LogWarning("Error: " + e.Message);
}
}
//Load Data
public static T loadData<T>(string dataFileName)
{
string tempPath = Path.Combine(Application.persistentDataPath, "data");
tempPath = Path.Combine(tempPath, dataFileName + ".txt");
//Exit if Directory or File does not exist
if (!Directory.Exists(Path.GetDirectoryName(tempPath)))
{
Debug.LogWarning("Directory does not exist");
return default(T);
}
if (!File.Exists(tempPath))
{
Debug.Log("File does not exist");
return default(T);
}
//Load saved Json
byte[] jsonByte = null;
try
{
jsonByte = File.ReadAllBytes(tempPath);
Debug.Log("Loaded Data from: " + tempPath.Replace("/", "\\"));
}
catch (Exception e)
{
Debug.LogWarning("Failed To Load Data from: " + tempPath.Replace("/", "\\"));
Debug.LogWarning("Error: " + e.Message);
}
//Convert to json string
string jsonData = Encoding.ASCII.GetString(jsonByte);
//Convert to Object
object resultValue = JsonUtility.FromJson<T>(jsonData);
return (T)Convert.ChangeType(resultValue, typeof(T));
}
public static bool deleteData(string dataFileName)
{
bool success = false;
//Load Data
string tempPath = Path.Combine(Application.persistentDataPath, "data");
tempPath = Path.Combine(tempPath, dataFileName + ".txt");
//Exit if Directory or File does not exist
if (!Directory.Exists(Path.GetDirectoryName(tempPath)))
{
Debug.LogWarning("Directory does not exist");
return false;
}
if (!File.Exists(tempPath))
{
Debug.Log("File does not exist");
return false;
}
try
{
File.Delete(tempPath);
Debug.Log("Data deleted from: " + tempPath.Replace("/", "\\"));
success = true;
}
catch (Exception e)
{
Debug.LogWarning("Failed To Delete Data: " + e.Message);
}
return success;
}
}
USAGE:
Example class to Save:
[Serializable]
public class PlayerInfo
{
public List<int> ID = new List<int>();
public List<int> Amounts = new List<int>();
public int life = 0;
public float highScore = 0;
}
Save Data:
PlayerInfo saveData = new PlayerInfo();
saveData.life = 99;
saveData.highScore = 40;
//Save data from PlayerInfo to a file named players
DataSaver.saveData(saveData, "players");
Load Data:
PlayerInfo loadedData = DataSaver.loadData<PlayerInfo>("players");
if (loadedData == null)
{
return;
}
//Display loaded Data
Debug.Log("Life: " + loadedData.life);
Debug.Log("High Score: " + loadedData.highScore);
for (int i = 0; i < loadedData.ID.Count; i++)
{
Debug.Log("ID: " + loadedData.ID[i]);
}
for (int i = 0; i < loadedData.Amounts.Count; i++)
{
Debug.Log("Amounts: " + loadedData.Amounts[i]);
}
Delete Data:
DataSaver.deleteData("players");

I know this post is old, but in case other users also find it while searching for save strategies, remember:
PlayerPrefs is not for storing game state. It is explicitly named "PlayerPrefs" to indicate its use: storing player preferences. It is essentially plain text. It can easily be located, opened, and edited by any player. This may not be a concern for all developers, but it will matter to many whose games are competitive.
Use PlayerPrefs for Options menu settings like volume sliders and graphics settings: things where you don't care that the player can set and change them at will.
Use I/O and serialization for saving game data, or send it to a server as Json. These methods are more secure than PlayerPrefs, even if you encrypt the data before saving.

What is the propper way of saving Resource references in between Unity runs [duplicate]

I find the best way to save game data in Unity3D Game engine.
At first, I serialize objects using BinaryFormatter.
But I heard this way has some issues and is not suitable for save.
So, What is the best or recommended way for saving game state?
In my case, save format must be byte array.

But I heard this way has some issues and not suitable for save.
That's right. On some devices, there are issues with BinaryFormatter. It gets worse when you update or change the class. Your old settings might be lost since the classes non longer match. Sometimes, you get an exception when reading the saved data due to this.
Also, on iOS, you have to add Environment.SetEnvironmentVariable("MONO_REFLECTION_SERIALIZER", "yes"); or you will have problems with BinaryFormatter.
The best way to save is with PlayerPrefs and Json. You can learn how to do that here.
In my case, save format must be byte array
In this case, you can convert it to json then convert the json string to byte array. You can then use File.WriteAllBytes and File.ReadAllBytes to save and read the byte array.
Here is a Generic class that can be used to save data. Almost the-same as this but it does not use PlayerPrefs. It uses file to save the json data.
DataSaver class:
public class DataSaver
{
//Save Data
public static void saveData<T>(T dataToSave, string dataFileName)
{
string tempPath = Path.Combine(Application.persistentDataPath, "data");
tempPath = Path.Combine(tempPath, dataFileName + ".txt");
//Convert To Json then to bytes
string jsonData = JsonUtility.ToJson(dataToSave, true);
byte[] jsonByte = Encoding.ASCII.GetBytes(jsonData);
//Create Directory if it does not exist
if (!Directory.Exists(Path.GetDirectoryName(tempPath)))
{
Directory.CreateDirectory(Path.GetDirectoryName(tempPath));
}
//Debug.Log(path);
try
{
File.WriteAllBytes(tempPath, jsonByte);
Debug.Log("Saved Data to: " + tempPath.Replace("/", "\\"));
}
catch (Exception e)
{
Debug.LogWarning("Failed To PlayerInfo Data to: " + tempPath.Replace("/", "\\"));
Debug.LogWarning("Error: " + e.Message);
}
}
//Load Data
public static T loadData<T>(string dataFileName)
{
string tempPath = Path.Combine(Application.persistentDataPath, "data");
tempPath = Path.Combine(tempPath, dataFileName + ".txt");
//Exit if Directory or File does not exist
if (!Directory.Exists(Path.GetDirectoryName(tempPath)))
{
Debug.LogWarning("Directory does not exist");
return default(T);
}
if (!File.Exists(tempPath))
{
Debug.Log("File does not exist");
return default(T);
}
//Load saved Json
byte[] jsonByte = null;
try
{
jsonByte = File.ReadAllBytes(tempPath);
Debug.Log("Loaded Data from: " + tempPath.Replace("/", "\\"));
}
catch (Exception e)
{
Debug.LogWarning("Failed To Load Data from: " + tempPath.Replace("/", "\\"));
Debug.LogWarning("Error: " + e.Message);
}
//Convert to json string
string jsonData = Encoding.ASCII.GetString(jsonByte);
//Convert to Object
object resultValue = JsonUtility.FromJson<T>(jsonData);
return (T)Convert.ChangeType(resultValue, typeof(T));
}
public static bool deleteData(string dataFileName)
{
bool success = false;
//Load Data
string tempPath = Path.Combine(Application.persistentDataPath, "data");
tempPath = Path.Combine(tempPath, dataFileName + ".txt");
//Exit if Directory or File does not exist
if (!Directory.Exists(Path.GetDirectoryName(tempPath)))
{
Debug.LogWarning("Directory does not exist");
return false;
}
if (!File.Exists(tempPath))
{
Debug.Log("File does not exist");
return false;
}
try
{
File.Delete(tempPath);
Debug.Log("Data deleted from: " + tempPath.Replace("/", "\\"));
success = true;
}
catch (Exception e)
{
Debug.LogWarning("Failed To Delete Data: " + e.Message);
}
return success;
}
}
USAGE:
Example class to Save:
[Serializable]
public class PlayerInfo
{
public List<int> ID = new List<int>();
public List<int> Amounts = new List<int>();
public int life = 0;
public float highScore = 0;
}
Save Data:
PlayerInfo saveData = new PlayerInfo();
saveData.life = 99;
saveData.highScore = 40;
//Save data from PlayerInfo to a file named players
DataSaver.saveData(saveData, "players");
Load Data:
PlayerInfo loadedData = DataSaver.loadData<PlayerInfo>("players");
if (loadedData == null)
{
return;
}
//Display loaded Data
Debug.Log("Life: " + loadedData.life);
Debug.Log("High Score: " + loadedData.highScore);
for (int i = 0; i < loadedData.ID.Count; i++)
{
Debug.Log("ID: " + loadedData.ID[i]);
}
for (int i = 0; i < loadedData.Amounts.Count; i++)
{
Debug.Log("Amounts: " + loadedData.Amounts[i]);
}
Delete Data:
DataSaver.deleteData("players");

I know this post is old, but in case other users also find it while searching for save strategies, remember:
PlayerPrefs is not for storing game state. It is explicitly named "PlayerPrefs" to indicate its use: storing player preferences. It is essentially plain text. It can easily be located, opened, and edited by any player. This may not be a concern for all developers, but it will matter to many whose games are competitive.
Use PlayerPrefs for Options menu settings like volume sliders and graphics settings: things where you don't care that the player can set and change them at will.
Use I/O and serialization for saving game data, or send it to a server as Json. These methods are more secure than PlayerPrefs, even if you encrypt the data before saving.