"Save from a newer version" is now just a warning (OPS format never changes)

Also, actual save errors now prevent you from clicking "Open" (which allowed you to vote and do other stuff even though the save was never loaded)

src/client/GameSave.cpp

@@ -51,6 +51,7 @@ originalData(save.originalData)
 		blockHeight = save.blockHeight;
 	}
 	particlesCount = save.particlesCount;
+	fromNewerVersion = false;
 }
 
 GameSave::GameSave(int width, int height)
@@ -63,6 +64,7 @@ GameSave::GameSave(int width, int height)
 	fanVelYPtr = NULL;
 	particles = NULL;
 
+	fromNewerVersion = false;
 	hasOriginalData = false;
 	expanded = true;
 	setSize(width, height);
@@ -81,6 +83,7 @@ GameSave::GameSave(std::vector<char> data)
 	fanVelYPtr = NULL;
 	particles = NULL;
 
+	fromNewerVersion = false;
 	expanded = false;
 	hasOriginalData = true;
 	originalData = data;
@@ -113,6 +116,7 @@ GameSave::GameSave(std::vector<unsigned char> data)
 	fanVelYPtr = NULL;
 	particles = NULL;
 
+	fromNewerVersion = false;
 	expanded = false;
 	hasOriginalData = true;
 	originalData = std::vector<char>(data.begin(), data.end());
@@ -145,6 +149,7 @@ GameSave::GameSave(char * data, int dataSize)
 	fanVelYPtr = NULL;
 	particles = NULL;
 
+	fromNewerVersion = false;
 	expanded = false;
 	hasOriginalData = true;
 	originalData = std::vector<char>(data, data+dataSize);
@@ -246,6 +251,8 @@ void GameSave::read(char * data, int dataSize)
 #ifdef DEBUG
 			std::cout << "Reading OPS..." << std::endl;
 #endif
+			if (data[3] != '1')
+				throw ParseException(ParseException::WrongVersion, "Save format from newer version");
 			readOPS(data, dataSize);
 		}
 		else
@@ -457,7 +464,8 @@ void GameSave::readOPS(char * data, int dataLength)
 
 	//From newer version
 	if (savedVersion > SAVE_VERSION)
-		throw ParseException(ParseException::WrongVersion, "Save from newer version");
+		fromNewerVersion = true;
+		//throw ParseException(ParseException::WrongVersion, "Save from newer version");
 
 	//Incompatible cell size
 	if (inputData[5] > CELL)

src/client/GameSave.h

@@ -21,7 +21,7 @@ public:
 	{
 		return message.c_str();
 	}
-	~ParseException() throw() {};
+	~ParseException() throw() {}
 };
 
 class GameSave
@@ -29,6 +29,7 @@ class GameSave
 public:
 	
 	int blockWidth, blockHeight;
+	bool fromNewerVersion;
 
 	//Simulation data
 	//int ** particleMap;

src/gui/preview/PreviewModel.cpp

@@ -7,6 +7,7 @@
 
 PreviewModel::PreviewModel():
 	doOpen(false),
+	canOpen(true),
 	save(NULL),
 	saveData(NULL),
 	saveComments(NULL),
@@ -92,6 +93,11 @@ bool PreviewModel::GetDoOpen()
 	return doOpen;
 }
 
+bool PreviewModel::GetCanOpen()
+{
+	return canOpen;
+}
+
 SaveInfo * PreviewModel::GetSave()
 {
 	return save;
@@ -169,11 +175,15 @@ void PreviewModel::OnResponseReady(void * object, int identifier)
 			commentsTotal = save->Comments;
 			try
 			{
-				save->SetGameSave(new GameSave(*saveData));
+				GameSave *gameSave = new GameSave(*saveData);
+				if (gameSave->fromNewerVersion)
+					new ErrorMessage("This save is from a newer version", "Please update TPT in game or at http://powdertoy.co.uk");
+				save->SetGameSave(gameSave);
 			}
 			catch(ParseException &e)
 			{
 				new ErrorMessage("Error", e.what());
+				canOpen = false;
 			}
 			notifySaveChanged();
 			notifyCommentsPageChanged();

src/gui/preview/PreviewModel.h

@@ -16,6 +16,7 @@ using namespace std;
 class PreviewView;
 class PreviewModel: RequestListener {
 	bool doOpen;
+	bool canOpen;
 	vector<PreviewView*> observers;
 	SaveInfo * save;
 	std::vector<unsigned char> * saveData;
@@ -52,6 +53,7 @@ public:
 	void UpdateSave(int saveID, int saveDate);
 	void SetFavourite(bool favourite);
 	bool GetDoOpen();
+	bool GetCanOpen();
 	void SetDoOpen(bool doOpen);
 	void Update();
 	virtual void OnResponseReady(void * object, int identifier);

src/gui/preview/PreviewView.cpp

@@ -465,6 +465,8 @@ void PreviewView::NotifySaveChanged(PreviewModel * sender)
 				savePreview->Height *= scaleFactor;
 			}
 		}
+		else if (!sender->GetCanOpen())
+			openButton->Enabled = false;
 	}
 	else
 	{
@@ -474,6 +476,8 @@ void PreviewView::NotifySaveChanged(PreviewModel * sender)
 		authorDateLabel->SetText("");
 		saveDescriptionLabel->SetText("");
 		favButton->Enabled = false;
+		if (!sender->GetCanOpen())
+			openButton->Enabled = false;
 	}
 }