유니티 게임 데이터를 구글 플레이 클라우드 에 저장 및 로드

유니티 안드로이드 게임의 데이터를 구글 플레이 서비스 클라우드에 저장하고 가져오는 스크립트 입니다. 유니티 포럼에서 본걸 조금만 수정했어요. 잘되는거 테스트 완료.

	// code reference: http://answers.unity3d.com/questions/894995/how-to-saveload-with-google-play-services.html
	// you need to import https://github.com/playgameservices/play-games-plugin-for-unity
	using UnityEngine;
	using System;
	using System.Collections;
	//gpg
	using GooglePlayGames;
	using GooglePlayGames.BasicApi;
	using GooglePlayGames.BasicApi.SavedGame;
	//for encoding
	using System.Text;
	//for extra save ui
	using UnityEngine.SocialPlatforms;
	//for text, remove
	using UnityEngine.UI;
	public class PlayCloudDataManager : MonoBehaviour
	{

	private static PlayCloudDataManager instance;

	public static PlayCloudDataManager Instance
	{
	get
	{
	if (instance == null)
	{
	instance = FindObjectOfType<PlayCloudDataManager>();

	if (instance == null)
	{
	instance = new GameObject("PlayGameCloudData").AddComponent<PlayCloudDataManager>();
	}
	}

	return instance;
	}
	}

	public bool isProcessing
	{
	get;
	private set;
	}
	public string loadedData
	{
	get;
	private set;
	}
	private const string m_saveFileName = "game_save_data";
	public bool isAuthenticated
	{
	get
	{
	return Social.localUser.authenticated;
	}
	}

	private void InitiatePlayGames()
	{
	PlayGamesClientConfiguration config = new PlayGamesClientConfiguration.Builder()
	// enables saving game progress.
	.EnableSavedGames()
	.Build();

	PlayGamesPlatform.InitializeInstance(config);
	// recommended for debugging:
	PlayGamesPlatform.DebugLogEnabled = false;
	// Activate the Google Play Games platform
	PlayGamesPlatform.Activate();
	}

	private void Awake()
	{
	InitiatePlayGames();
	}


	public void Login()
	{
	Social.localUser.Authenticate((bool success) =>
	{
	if (!success)
	{
	Debug.Log("Fail Login");
	}
	});
	}


	private void ProcessCloudData(byte[] cloudData)
	{
	if (cloudData == null)
	{
	Debug.Log("No Data saved to the cloud");
	return;
	}

	string progress = BytesToString(cloudData);
	loadedData = progress;
	}


	public void LoadFromCloud(Action<string> afterLoadAction)
	{
	if (isAuthenticated && !isProcessing)
	{
	StartCoroutine(LoadFromCloudRoutin(afterLoadAction));
	}
	else
	{
	Login();
	}
	}

	private IEnumerator LoadFromCloudRoutin(Action<string> loadAction)
	{
	isProcessing = true;
	Debug.Log("Loading game progress from the cloud.");

	((PlayGamesPlatform)Social.Active).SavedGame.OpenWithAutomaticConflictResolution(
	m_saveFileName, //name of file.
	DataSource.ReadCacheOrNetwork,
	ConflictResolutionStrategy.UseLongestPlaytime,
	OnFileOpenToLoad);

	while(isProcessing)
	{
	yield return null;
	}

	loadAction.Invoke(loadedData);
	}

	public void SaveToCloud(string dataToSave)
	{

	if (isAuthenticated)
	{
	loadedData = dataToSave;
	isProcessing = true;
	((PlayGamesPlatform)Social.Active).SavedGame.OpenWithAutomaticConflictResolution(m_saveFileName, DataSource.ReadCacheOrNetwork, ConflictResolutionStrategy.UseLongestPlaytime, OnFileOpenToSave);
	}
	else
	{
	Login();
	}
	}

	private void OnFileOpenToSave(SavedGameRequestStatus status, ISavedGameMetadata metaData)
	{
	if (status == SavedGameRequestStatus.Success)
	{

	byte[] data = StringToBytes(loadedData);

	SavedGameMetadataUpdate.Builder builder = new SavedGameMetadataUpdate.Builder();

	SavedGameMetadataUpdate updatedMetadata = builder.Build();

	((PlayGamesPlatform)Social.Active).SavedGame.CommitUpdate(metaData, updatedMetadata, data, OnGameSave);
	}
	else
	{
	Debug.LogWarning("Error opening Saved Game" + status);
	}
	}


	private void OnFileOpenToLoad(SavedGameRequestStatus status, ISavedGameMetadata metaData)
	{
	if (status == SavedGameRequestStatus.Success)
	{
	((PlayGamesPlatform)Social.Active).SavedGame.ReadBinaryData(metaData, OnGameLoad);
	}
	else
	{
	Debug.LogWarning("Error opening Saved Game" + status);
	}
	}


	private void OnGameLoad(SavedGameRequestStatus status, byte[] bytes)
	{
	if (status != SavedGameRequestStatus.Success)
	{
	Debug.LogWarning("Error Saving" + status);
	}
	else
	{
	ProcessCloudData(bytes);
	}

	isProcessing = false;
	}

	private void OnGameSave(SavedGameRequestStatus status, ISavedGameMetadata metaData)
	{
	if (status != SavedGameRequestStatus.Success)
	{
	Debug.LogWarning("Error Saving" + status);
	}

	isProcessing = false;
	}

	private byte[] StringToBytes(string stringToConvert)
	{
	return Encoding.UTF8.GetBytes(stringToConvert);
	}

	private string BytesToString(byte[] bytes)
	{
	return Encoding.UTF8.GetString(bytes);
	}
	}