Advance map header serialization

lib/CArtHandler.cpp

@@ -203,7 +203,7 @@ std::vector<JsonNode> CArtHandler::loadLegacyData(size_t dataSize)
 
 void CArtHandler::loadObject(std::string scope, std::string name, const JsonNode & data)
 {
-	auto object = loadFromJson(data, name);
+	auto object = loadFromJson(data, normalizeIdentifier(scope, "core", name));
 	object->id = ArtifactID(artifacts.size());
 	object->iconIndex = object->id + 5;
 
@@ -231,12 +231,12 @@ void CArtHandler::loadObject(std::string scope, std::string name, const JsonNode
 			VLC->objtypeh->removeSubObject(Obj::ARTIFACT, object->id);
 	});
 
-	registerObject(scope, "artifact", object->identifier, object->id);
+	registerObject(scope, "artifact", name, object->id);
 }
 
 void CArtHandler::loadObject(std::string scope, std::string name, const JsonNode & data, size_t index)
 {
-	auto object = loadFromJson(data, name);
+	auto object = loadFromJson(data, normalizeIdentifier(scope, "core", name));
 	object->id = ArtifactID(index);
 	object->iconIndex = object->id;
 
@@ -264,7 +264,7 @@ void CArtHandler::loadObject(std::string scope, std::string name, const JsonNode
 		if (VLC->objtypeh->getHandlerFor(Obj::ARTIFACT, object->id)->getTemplates().empty())
 			VLC->objtypeh->removeSubObject(Obj::ARTIFACT, object->id);
 	});
-	registerObject(scope, "artifact", object->identifier, object->id);
+	registerObject(scope, "artifact", name, object->id);
 }
 
 CArtifact * CArtHandler::loadFromJson(const JsonNode & node, const std::string & identifier)
@@ -674,7 +674,7 @@ std::vector<bool> CArtHandler::getDefaultAllowed() const
 	std::vector<bool> allowedArtifacts;
 	allowedArtifacts.resize(127, true);
 	allowedArtifacts.resize(141, false);
-	allowedArtifacts.resize(GameConstants::ARTIFACTS_QUANTITY, true);
+	allowedArtifacts.resize(artifacts.size(), true);
 	return allowedArtifacts;
 }
 
@@ -742,6 +742,20 @@ void CArtHandler::afterLoadFinalization()
 	CBonusSystemNode::treeHasChanged();
 }
 
+si32 CArtHandler::decodeArfifact(const std::string& identifier)
+{
+	auto rawId = VLC->modh->identifiers.getIdentifier("core", "artifact", identifier);
+	if(rawId)
+		return rawId.get();
+	else
+		return -1;
+}
+
+std::string CArtHandler::encodeArtifact(const si32 index)
+{
+	return VLC->arth->artifacts[index]->identifier;
+}
+
 CArtifactInstance::CArtifactInstance()
 {
 	init();

lib/CArtHandler.h

@@ -255,6 +255,12 @@ public:
 
 	std::vector<bool> getDefaultAllowed() const override;
 
+	///json serialization helper
+	static si32 decodeArfifact(const std::string & identifier);
+
+	///json serialization helper
+	static std::string encodeArtifact(const si32 index);
+
 	template <typename Handler> void serialize(Handler &h, const int version)
 	{
 		h & artifacts & allowedArtifacts & treasures & minors & majors & relics

lib/CCreatureHandler.cpp

@@ -368,7 +368,7 @@ std::vector<JsonNode> CCreatureHandler::loadLegacyData(size_t dataSize)
 
 void CCreatureHandler::loadObject(std::string scope, std::string name, const JsonNode & data)
 {
-	auto object = loadFromJson(data, name);
+	auto object = loadFromJson(data, normalizeIdentifier(scope, "core", name));
 	object->setId(CreatureID(creatures.size()));
 	object->iconIndex = object->idNumber + 2;
 
@@ -402,7 +402,7 @@ void CCreatureHandler::loadObject(std::string scope, std::string name, const Jso
 
 void CCreatureHandler::loadObject(std::string scope, std::string name, const JsonNode & data, size_t index)
 {
-	auto object = loadFromJson(data, name);
+	auto object = loadFromJson(data, normalizeIdentifier(scope, "core", name));
 	object->setId(CreatureID(index));
 	object->iconIndex = object->idNumber + 2;
 

lib/CHeroHandler.cpp

@@ -192,7 +192,7 @@ std::vector<JsonNode> CHeroClassHandler::loadLegacyData(size_t dataSize)
 
 void CHeroClassHandler::loadObject(std::string scope, std::string name, const JsonNode & data)
 {
-	auto object = loadFromJson(data, name);
+	auto object = loadFromJson(data, normalizeIdentifier(scope, "core", name));
 	object->id = heroClasses.size();
 
 	heroClasses.push_back(object);
@@ -205,19 +205,12 @@ void CHeroClassHandler::loadObject(std::string scope, std::string name, const Js
 		VLC->objtypeh->loadSubObject(name, classConf, index, object->id);
 	});
 
-//	VLC->modh->identifiers.requestIdentifier(scope, "object", "prison", [=](si32 index)
-//	{
-//		JsonNode conf;
-//		conf.setMeta(scope);
-//		VLC->objtypeh->loadSubObject(name, conf, index, object->id);
-//	});
-
 	VLC->modh->identifiers.registerObject(scope, "heroClass", name, object->id);
 }
 
 void CHeroClassHandler::loadObject(std::string scope, std::string name, const JsonNode & data, size_t index)
 {
-	auto object = loadFromJson(data, name);
+	auto object = loadFromJson(data, normalizeIdentifier(scope, "core", name));
 	object->id = index;
 
 	assert(heroClasses[index] == nullptr); // ensure that this id was not loaded before
@@ -547,7 +540,7 @@ std::vector<JsonNode> CHeroHandler::loadLegacyData(size_t dataSize)
 
 void CHeroHandler::loadObject(std::string scope, std::string name, const JsonNode & data)
 {
-	auto object = loadFromJson(data, name);
+	auto object = loadFromJson(data, normalizeIdentifier(scope, "core", name));
 	object->ID = HeroTypeID(heroes.size());
 	object->imageIndex = heroes.size() + 30; // 2 special frames + some extra portraits
 
@@ -558,7 +551,7 @@ void CHeroHandler::loadObject(std::string scope, std::string name, const JsonNod
 
 void CHeroHandler::loadObject(std::string scope, std::string name, const JsonNode & data, size_t index)
 {
-	auto object = loadFromJson(data, name);
+	auto object = loadFromJson(data, normalizeIdentifier(scope, "core", name));
 	object->ID = HeroTypeID(index);
 	object->imageIndex = index;
 
@@ -618,3 +611,17 @@ std::vector<bool> CHeroHandler::getDefaultAllowedAbilities() const
 	allowedAbilities.resize(GameConstants::SKILL_QUANTITY, true);
 	return allowedAbilities;
 }
+
+si32 CHeroHandler::decodeSkill(const std::string& identifier)
+{
+	auto rawId = VLC->modh->identifiers.getIdentifier("core", "skill", identifier);
+	if(rawId)
+		return rawId.get();
+	else
+		return -1;
+}
+
+std::string CHeroHandler::encodeSkill(const si32 index)
+{
+	return NSecondarySkill::names[index];
+}

lib/CHeroHandler.h

@@ -257,6 +257,12 @@ public:
 	 */
 	std::vector<bool> getDefaultAllowedAbilities() const;
 
+	///json serialization helper
+	static si32 decodeSkill(const std::string & identifier);
+
+	///json serialization helper
+	static std::string encodeSkill(const si32 index);
+
 	template <typename Handler> void serialize(Handler &h, const int version)
 	{
 		h & classes & heroes & expPerLevel & ballistics & terrCosts;

lib/CModHandler.cpp

@@ -187,7 +187,6 @@ void CIdentifierStorage::registerObject(std::string scope, std::string type, std
 	checkIdentifier(fullID);
 
 	registeredObjects.insert(std::make_pair(fullID, data));
-	logGlobal->traceStream() << scope << "::" << fullID;
 }
 
 std::vector<CIdentifierStorage::ObjectData> CIdentifierStorage::getPossibleIdentifiers(const ObjectCallback & request)
@@ -206,11 +205,22 @@ std::vector<CIdentifierStorage::ObjectData> CIdentifierStorage::getPossibleIdent
 	else
 	{
 		//...unless destination mod was specified explicitly
-		auto myDeps = VLC->modh->getModData(request.localScope).dependencies;
+		//note: getModData does not work for "core" by design
-		if (request.remoteScope == "core" ||   // allow only available to all core mod
+
-		    myDeps.count(request.remoteScope)) // or dependencies
+		//for map format support core mod has access to any mod
+		//TODO: better solution for access from map?
+		if(request.localScope == "core" || request.localScope == "")
+		{
 			allowedScopes.insert(request.remoteScope);
 		}
+		else
+		{
+			// allow only available to all core mod or dependencies
+			auto myDeps = VLC->modh->getModData(request.localScope).dependencies;
+			if (request.remoteScope == "core" || myDeps.count(request.remoteScope))
+				allowedScopes.insert(request.remoteScope);
+		}
+	}
 
 	std::string fullID = request.type + '.' + request.name;
 
@@ -845,9 +855,16 @@ void CModHandler::loadModFilesystems()
 
 CModInfo & CModHandler::getModData(TModID modId)
 {
-	CModInfo & mod = allMods.at(modId);
+	auto it = allMods.find(modId);
-	assert(vstd::contains(activeMods, modId)); // not really necessary but won't hurt
+
-	return mod;
+	if(it == allMods.end())
+	{
+		throw std::runtime_error("Mod not found '" + modId+"'");
+	}
+	else
+	{
+		return it->second;
+	}
 }
 
 void CModHandler::initializeConfig()

lib/CTownHandler.cpp

@@ -682,7 +682,7 @@ CFaction * CTownHandler::loadFromJson(const JsonNode &source, const std::string
 
 void CTownHandler::loadObject(std::string scope, std::string name, const JsonNode & data)
 {
-	auto object = loadFromJson(data, name);
+	auto object = loadFromJson(data, normalizeIdentifier(scope, "core", name));
 
 	object->index = factions.size();
 	factions.push_back(object);
@@ -699,7 +699,7 @@ void CTownHandler::loadObject(std::string scope, std::string name, const JsonNod
 		{
 			// register town once objects are loaded
 			JsonNode config = data["town"]["mapObject"];
-			config["faction"].String() = object->identifier;
+			config["faction"].String() = name;
 			config["faction"].meta = scope;
 			if (config.meta.empty())// MODS COMPATIBILITY FOR 0.96
 				config.meta = scope;
@@ -722,7 +722,7 @@ void CTownHandler::loadObject(std::string scope, std::string name, const JsonNod
 
 void CTownHandler::loadObject(std::string scope, std::string name, const JsonNode & data, size_t index)
 {
-	auto object = loadFromJson(data, name);
+	auto object = loadFromJson(data, normalizeIdentifier(scope, "core", name));
 	object->index = index;
 	assert(factions[index] == nullptr); // ensure that this id was not loaded before
 	factions[index] = object;
@@ -739,7 +739,7 @@ void CTownHandler::loadObject(std::string scope, std::string name, const JsonNod
 		{
 			// register town once objects are loaded
 			JsonNode config = data["town"]["mapObject"];
-			config["faction"].String() = object->identifier;
+			config["faction"].String() = name;
 			config["faction"].meta = scope;
 			VLC->objtypeh->loadSubObject(object->identifier, config, index, object->index);
 		});

lib/IHandlerBase.cpp

@@ -17,3 +17,8 @@ void IHandlerBase::registerObject(std::string scope, std::string type_name, std:
 {
 	return VLC->modh->identifiers.registerObject(scope, type_name, name, index);
 }
+
+std::string IHandlerBase::normalizeIdentifier(const std::string& scope, const std::string& remoteScope, const std::string& identifier) const
+{
+	return VLC->modh->normalizeIdentifier(scope, remoteScope, identifier);
+}

lib/IHandlerBase.h

@@ -25,6 +25,7 @@ class DLL_LINKAGE IHandlerBase
 protected:
 	/// Calls modhandler. Mostly needed to avoid large number of includes in headers
 	void registerObject(std::string scope, std::string type_name, std::string name, si32 index);
+	std::string normalizeIdentifier(const std::string & scope, const std::string & remoteScope, const std::string & identifier) const;
 
 public:
 	/// loads all original game data in vector of json nodes
@@ -65,7 +66,7 @@ public:
 	void loadObject(std::string scope, std::string name, const JsonNode & data) override
 	{
 		auto type_name = getTypeName();
-		auto object = loadFromJson(data, name);
+		auto object = loadFromJson(data, normalizeIdentifier(scope, "core", name));
 		object->id = _ObjectID(objects.size());
 
 		objects.push_back(object);
@@ -75,7 +76,7 @@ public:
 	void loadObject(std::string scope, std::string name, const JsonNode & data, size_t index) override
 	{
 		auto type_name = getTypeName();
-		auto object = loadFromJson(data, name);
+		auto object = loadFromJson(data, normalizeIdentifier(scope, "core", name));
 		object->id = _ObjectID(index);
 
 

lib/mapObjects/CObjectClassesHandler.cpp

@@ -201,14 +201,14 @@ CObjectClassesHandler::ObjectContainter * CObjectClassesHandler::loadFromJson(co
 
 void CObjectClassesHandler::loadObject(std::string scope, std::string name, const JsonNode & data)
 {
-	auto object = loadFromJson(data, name);
+	auto object = loadFromJson(data, normalizeIdentifier(scope, "core", name));
 	objects[object->id] = object;
 	VLC->modh->identifiers.registerObject(scope, "object", name, object->id);
 }
 
 void CObjectClassesHandler::loadObject(std::string scope, std::string name, const JsonNode & data, size_t index)
 {
-	auto object = loadFromJson(data, name);
+	auto object = loadFromJson(data, normalizeIdentifier(scope, "core", name));
 	assert(objects[index] == nullptr); // ensure that this id was not loaded before
 	objects[index] = object;
 	VLC->modh->identifiers.registerObject(scope, "object", name, object->id);

lib/mapping/MapFormatJson.cpp

@@ -23,6 +23,7 @@
 #include "../mapObjects/CObjectClassesHandler.h"
 #include "../mapObjects/CGHeroInstance.h"
 #include "../mapObjects/CGTownInstance.h"
+#include "../spells/CSpellHandler.h"
 #include "../StringConstants.h"
 #include "../serializer/JsonDeserializer.h"
 #include "../serializer/JsonSerializer.h"
@@ -432,6 +433,35 @@ void CMapFormatJson::writeTriggeredEvent(const TriggeredEvent& event, JsonNode&
 	dest["condition"] = event.trigger.toJson(ConditionToJson);
 }
 
+void CMapFormatJson::serializeOptions(JsonSerializeFormat & handler)
+{
+	//rumors
+
+	//disposedHeroes
+
+	//predefinedHeroes
+
+	handler.serializeLIC("allowedAbilities", &CHeroHandler::decodeSkill, &CHeroHandler::encodeSkill, VLC->heroh->getDefaultAllowedAbilities(), map->allowedAbilities);
+
+	handler.serializeLIC("allowedArtifacts", &CArtHandler::decodeArfifact, &CArtHandler::encodeArtifact, VLC->arth->getDefaultAllowed(), map->allowedArtifact);
+
+	handler.serializeLIC("allowedSpells", &CSpellHandler::decodeSpell, &CSpellHandler::encodeSpell, VLC->spellh->getDefaultAllowed(), map->allowedSpell);
+
+
+	//events
+}
+
+void CMapFormatJson::readOptions(JsonDeserializer & handler)
+{
+	serializeOptions(handler);
+}
+
+void CMapFormatJson::writeOptions(JsonSerializer & handler)
+{
+	serializeOptions(handler);
+}
+
+
 ///CMapPatcher
 CMapPatcher::CMapPatcher(JsonNode stream):
 	input(stream)
@@ -490,7 +520,7 @@ std::unique_ptr<CMapHeader> CMapLoaderJson::loadMapHeader()
 	map = nullptr;
 	std::unique_ptr<CMapHeader> result = std::unique_ptr<CMapHeader>(new CMapHeader());
 	mapHeader = result.get();
-	readHeader();
+	readHeader(false);
 	return std::move(result);
 }
 
@@ -512,7 +542,7 @@ const JsonNode CMapLoaderJson::getFromArchive(const std::string & archiveFilenam
 void CMapLoaderJson::readMap()
 {
 	LOG_TRACE(logGlobal);
-	readHeader();
+	readHeader(true);
 	map->initTerrain();
 	readTerrain();
 	readObjects();
@@ -525,7 +555,7 @@ void CMapLoaderJson::readMap()
 	map->calculateGuardingGreaturePositions();
 }
 
-void CMapLoaderJson::readHeader()
+void CMapLoaderJson::readHeader(const bool complete)
 {
 	//do not use map field here, use only mapHeader
 	JsonNode header = getFromArchive(HEADER_FILE_NAME);
@@ -575,6 +605,9 @@ void CMapLoaderJson::readHeader()
 
 	readTeams(handler);
 	//TODO: readHeader
+
+	if(complete)
+		readOptions(handler);
 }
 
 
@@ -900,6 +933,8 @@ void CMapSaverJson::writeHeader()
 	//todo:	allowedHeroes;
 	//todo: placeholdedHeroes;
 
+	writeOptions(handler);
+
 	addToArchive(header, HEADER_FILE_NAME);
 }
 

lib/mapping/MapFormatJson.h

@@ -56,13 +56,11 @@ protected:
 
 	/**
 	 * Reads team settings to header
-	 * @param input serialized header
 	 */
 	void readTeams(JsonDeserializer & handler);
 
 	/**
 	 * Saves team settings to header
-	 * @param output serialized header
 	 */
 	void writeTeams(JsonSerializer & handler);
 
@@ -89,6 +87,21 @@ protected:
 	 * Writes one of triggered events
 	 */
 	void writeTriggeredEvent(const TriggeredEvent & event, JsonNode & dest);
+
+
+
+	///common part of map attributes saving/loading
+	void serializeOptions(JsonSerializeFormat & handler);
+
+	/**
+	 * Loads map attributes except header ones
+	 */
+	void readOptions(JsonDeserializer & handler);
+
+	/**
+	 * Saves map attributes except header ones
+	 */
+	void writeOptions(JsonSerializer & handler);
 };
 
 class DLL_LINKAGE CMapPatcher : public CMapFormatJson, public IMapPatcher
@@ -166,7 +179,7 @@ private:
 	/**
 	 * Reads the map header.
 	 */
-	void readHeader();
+	void readHeader(const bool complete);
 
 	/**
 	 * Reads complete map.

lib/serializer/JsonDeserializer.cpp

@@ -54,11 +54,33 @@ void JsonDeserializer::serializeLIC(const std::string & fieldName, const TDecode
 	if(field.isNull())
 		return;
 
+	auto loadPart = [&](const JsonVector & part, const bool val)
+	{
+		for(size_t index = 0; index < part.size(); index++)
+		{
+			const std::string & identifier = part[index].String();
+
+			logGlobal->debugStream() << "serializeLIC: " << fieldName << " " << identifier;
+
+			si32 rawId = decoder(identifier);
+			if(rawId >= 0)
+			{
+				if(rawId < value.size())
+					value[rawId] = val;
+				else
+					logGlobal->errorStream() << "JsonDeserializer::serializeLIC: " << fieldName <<" id out of bounds " << rawId;
+			}
+			else
+			{
+				logGlobal->errorStream() << "JsonDeserializer::serializeLIC: " << fieldName <<" identifier not resolved " << identifier;
+			}
+		}
+	};
+
 	const JsonVector & anyOf = field["anyOf"].Vector();
 	const JsonVector & allOf = field["allOf"].Vector();
 	const JsonVector & noneOf = field["noneOf"].Vector();
 
-
 	if(anyOf.empty() && allOf.empty())
 	{
 		//permissive mode
@@ -70,35 +92,11 @@ void JsonDeserializer::serializeLIC(const std::string & fieldName, const TDecode
 		value.clear();
 		value.resize(standard.size(), false);
 
-		for(size_t index = 0; index < anyOf.size(); index++)
+		loadPart(anyOf, true);
-		{
+		loadPart(allOf, true);
-			const std::string & identifier = anyOf[index].String();
-
-			si32 rawId = decoder(identifier);
-			if(rawId >= 0)
-				value[rawId] = true;
-		}
-
-
-		for(size_t index = 0; index < allOf.size(); index++)
-		{
-			const std::string & identifier = allOf[index].String();
-
-			si32 rawId = decoder(identifier);
-			if(rawId >=0)
-				value[rawId] = true;
-		}
-	}
-
-	for(size_t index = 0; index < noneOf.size(); index++)
-	{
-		const std::string & identifier = noneOf[index].String();
-
-		si32 rawId = decoder(identifier);
-		if(rawId >=0 )
-			value[rawId] = false;
 	}
 
+	loadPart(noneOf, false);
 }
 
 void JsonDeserializer::serializeString(const std::string & fieldName, std::string & value)

lib/spells/CSpellHandler.cpp

@@ -1078,6 +1078,27 @@ CSpellHandler::~CSpellHandler()
 std::vector<bool> CSpellHandler::getDefaultAllowed() const
 {
 	std::vector<bool> allowedSpells;
-	allowedSpells.resize(GameConstants::SPELLS_QUANTITY, true);
+	allowedSpells.reserve(objects.size());
+
+	for(const CSpell * s : objects)
+	{
+		allowedSpells.push_back( !(s->isSpecialSpell() || s->isCreatureAbility()));
+	}
+
 	return allowedSpells;
 }
+
+si32 CSpellHandler::decodeSpell(const std::string& identifier)
+{
+	auto rawId = VLC->modh->identifiers.getIdentifier("core", "spell", identifier);
+	if(rawId)
+		return rawId.get();
+	else
+		return -1;
+}
+
+std::string CSpellHandler::encodeSpell(const si32 index)
+{
+	return VLC->spellh->objects[index]->identifier;
+}
+

lib/spells/CSpellHandler.h

@@ -360,6 +360,12 @@ public:
 
 	const std::string getTypeName() const override;
 
+	///json serialization helper
+	static si32 decodeSpell(const std::string & identifier);
+
+	///json serialization helper
+	static std::string encodeSpell(const si32 index);
+
 	template <typename Handler> void serialize(Handler &h, const int version)
 	{
 		h & objects ;

test/MapComparer.cpp

@@ -26,6 +26,16 @@ void checkEqual(const T & actual, const T & expected)
 	BOOST_CHECK_EQUAL(actual, expected)	;
 }
 
+void checkEqual(const std::vector<bool> & actual, const std::vector<bool> & expected)
+{
+	BOOST_CHECK_EQUAL(actual.size(), expected.size());
+
+	for(auto actualIt = actual.begin(), expectedIt = expected.begin(); actualIt != actual.end() && expectedIt != expected.end(); actualIt++, expectedIt++)
+	{
+		checkEqual(*actualIt, *expectedIt);
+	}
+}
+
 template <class Element>
 void checkEqual(const std::vector<Element> & actual, const std::vector<Element> & expected)
 {
@@ -89,6 +99,20 @@ void checkEqual(const TriggeredEvent & actual,  const TriggeredEvent & expected)
 	checkEqual(actual.trigger, expected.trigger);
 }
 
+void checkEqual(const Rumor & actual, const Rumor & expected)
+{
+	VCMI_CHECK_FIELD_EQUAL(name);
+	VCMI_CHECK_FIELD_EQUAL(text);
+}
+
+void checkEqual(const DisposedHero & actual, const DisposedHero & expected)
+{
+	VCMI_CHECK_FIELD_EQUAL(heroId);
+	VCMI_CHECK_FIELD_EQUAL(portrait);
+	VCMI_CHECK_FIELD_EQUAL(name);
+	VCMI_CHECK_FIELD_EQUAL(players);
+}
+
 void checkEqual(const TerrainTile & actual, const TerrainTile & expected)
 {
 	//fatal fail here on any error
@@ -138,14 +162,16 @@ void MapComparer::compareHeader()
 
 void MapComparer::compareOptions()
 {
-	//rumors
+	checkEqual(actual->rumors, expected->rumors);
-	//disposedHeroes
+	checkEqual(actual->disposedHeroes, expected->disposedHeroes);
-	//predefinedHeroes
+	//todo: compareOptions predefinedHeroes
-	//allowedSpell
-	//allowedArtifact
-	//allowedAbilities
 
-	BOOST_ERROR("Not implemented compareOptions()");
+	checkEqual(actual->allowedAbilities, expected->allowedAbilities);
+	checkEqual(actual->allowedArtifact, expected->allowedArtifact);
+	checkEqual(actual->allowedSpell, expected->allowedSpell);
+	//checkEqual(actual->allowedAbilities, expected->allowedAbilities);
+
+	//todo: compareOptions  events
 }
 
 void MapComparer::compareObject(const CGObjectInstance * actual, const CGObjectInstance * expected)