fix setting of parent

include/beatsaber-impl/beatlevelimpl.h

@@ -20,6 +20,7 @@ protected:
 	double njs;
 	double nso;
 
+	std::shared_ptr<FileReader> reader;
 	const json& base;
 
 	std::vector<Note> notes;
@@ -29,6 +30,8 @@ public:
 	BeatLevelImpl(std::weak_ptr<BeatSet> p, std::shared_ptr<FileReader> r, const json& j);
 	virtual ~BeatLevelImpl();
 
+	bool load();
+
 	virtual Difficulty::Difficulty getDifficulty() const override;
 	virtual int32_t getDifficultyRank() const override;
 	virtual std::string getFilename() const override;

include/beatsaber-impl/beatsetimpl.h

@@ -11,6 +11,8 @@ class BeatSetImpl : public BeatSet, public std::enable_shared_from_this<BeatSetI
 protected:
 
 	std::weak_ptr<BeatMap> parent;
+	std::shared_ptr<FileReader> reader;
+	const json& base;
 	BeatmapCharacteristic::BeatmapCharacteristic characteristic;
 
 	std::vector<std::shared_ptr<BeatLevel>> level;
@@ -21,6 +23,8 @@ public:
 	BeatSetImpl() = default;
 	virtual ~BeatSetImpl();
 
+	bool load();
+
 	virtual void printDebug() const override;
 
 	virtual BeatmapCharacteristic::BeatmapCharacteristic getCharacteristic() const override;

src/beatlevel.cpp

@@ -9,24 +9,31 @@
 
 namespace Beatsaber {
 
-BeatLevelImpl::BeatLevelImpl(std::weak_ptr<BeatSet> p, std::shared_ptr<FileReader> r, const json& j) : parent(p), base(j) {
-	dif = Difficulty::getByString(j.value("_difficulty", ""));
-	diffRank = j.value("_difficultyRank", 0);
-	filename = j.value("_beatmapFilename", "");
-	njs = j.value("_noteJumpMovementSpeed", -1);
-	nso = j.value("_noteJumpStartBeatOffset", 0);
+BeatLevelImpl::BeatLevelImpl(std::weak_ptr<BeatSet> p, std::shared_ptr<FileReader> r, const json& j) : parent(p), reader(r), base(j) {
+}
+
+BeatLevelImpl::~BeatLevelImpl() {}
+
+bool BeatLevelImpl::load() {
+	dif = Difficulty::getByString(base.value("_difficulty", ""));
+	diffRank = base.value("_difficultyRank", 0);
+	filename = base.value("_beatmapFilename", "");
+	njs = base.value("_noteJumpMovementSpeed", -1);
+	nso = base.value("_noteJumpStartBeatOffset", 0);
 
 	//load level content
 	if(!filename.empty()) {
 		try {
-			std::shared_ptr<std::istream> stream = r->getFileStream(filename);
+			std::shared_ptr<std::istream> stream = reader->getFileStream(filename);
 			json diffjson;
 			(*stream) >> diffjson;
-			
-			const std::string& version = diffjson["_version"];
-			if(version != "2.0.0") {
-				//not supported
-				return;
+
+			if(diffjson.contains("_version") && diffjson["_version"].is_string()) {
+				const std::string& version = diffjson["_version"];
+				if(version != "2.0.0") {
+					//not supported
+					return false;
+				}
 			}
 
 			//load notes
@@ -46,18 +53,19 @@ BeatLevelImpl::BeatLevelImpl(std::weak_ptr<BeatSet> p, std::shared_ptr<FileReade
 					walls.push_back(wall);
 				}
 			}
-		} catch(...) {
+
+			return true;
+		} catch(const std::exception& exc) {
 			std::string mapname = "<unknown>";
 			auto par = parent.lock();
 			if(par)
 				mapname = par->getBeatMap()->getSongName();
-			std::cout << "Could not load difficulty: " << filename << " from: " << mapname << std::endl; //is the direct access after p.lock() a problem? is the parent always loaded?
+			std::cout << "Could not load difficulty: " << filename << " from: " << mapname << "  " << exc.what() << std::endl; //is the direct access after p.lock() a problem? is the parent always loaded?
 		}
 	}
+	return false;
 }
 
-BeatLevelImpl::~BeatLevelImpl() {}
-
 Difficulty::Difficulty BeatLevelImpl::getDifficulty() const {
 	return dif;
 }

src/beatmap.cpp

@@ -24,7 +24,10 @@ bool BeatMapImpl::load() {
 
 			//load all the beatsets
 			for(const json& jsonbeatset : beatsets) {
-				beatSets.push_back(std::make_shared<BeatSetImpl>(weak_from_this(), reader, jsonbeatset));
+				auto beatset = std::make_shared<BeatSetImpl>(weak_from_this(), reader, jsonbeatset);
+				if(beatset->load())
+					beatSets.push_back(beatset);
+				//return false on false?
 			}
 		}
 

src/beatset.cpp

@@ -7,27 +7,34 @@
 
 namespace Beatsaber {
 
-BeatSetImpl::BeatSetImpl(std::weak_ptr<BeatMap> p, std::shared_ptr<FileReader> r, const json& j) : parent(p) {
+BeatSetImpl::BeatSetImpl(std::weak_ptr<BeatMap> p, std::shared_ptr<FileReader> r, const json& j) : parent(p), reader(r), base(j) {}
+
+BeatSetImpl::~BeatSetImpl() {}
+
+bool BeatSetImpl::load() {
 	try {
-		characteristic = BeatmapCharacteristic::getByString(j["_beatmapCharacteristicName"]);
+		characteristic = BeatmapCharacteristic::getByString(base["_beatmapCharacteristicName"]);
 
 		//load level
-		const json& arr = j["_difficultyBeatmaps"];
+		const json& arr = base["_difficultyBeatmaps"];
 		if(arr.is_array()) {
 			level.reserve(arr.size());
 			//std::cout << "Try to load: " << arr.size() << " BeatLevel" << std::endl;
 			for(const json& beat : arr) {
-				level.push_back(std::make_shared<BeatLevelImpl>(weak_from_this(), r, beat));
+				auto beatlevel = std::make_shared<BeatLevelImpl>(weak_from_this(), reader, beat);
+				if(beatlevel->load())
+					level.push_back(beatlevel);
+				// return false on false?
 			}
+			return true;
 		}
 	} catch(std::exception& e) {
 		std::cout << "Could not read BeatSet: " << e.what() << std::endl;
 		characteristic = BeatmapCharacteristic::NONE;
 	}
+	return false;
 }
 
-BeatSetImpl::~BeatSetImpl() {}
-
 void BeatSetImpl::printDebug() const {
 	std::cout << "  Characteristic: " << BeatmapCharacteristic::toString(characteristic) << std::endl;