/*
 * MapFormatH3M.cpp, part of VCMI engine
 *
 * Authors: listed in file AUTHORS in main folder
 *
 * License: GNU General Public License v2.0 or later
 * Full text of license available in license.txt file, in main folder
 *
 */

#include "StdInc.h"
#include "MapFormatH3M.h"

#include "CMap.h"
#include "MapReaderH3M.h"
#include "MapFormat.h"

#include "../ArtifactUtils.h"
#include "../CCreatureHandler.h"
#include "../texts/CGeneralTextHandler.h"
#include "../CHeroHandler.h"
#include "../CSkillHandler.h"
#include "../CStopWatch.h"
#include "../GameSettings.h"
#include "../RiverHandler.h"
#include "../RoadHandler.h"
#include "../TerrainHandler.h"
#include "../VCMI_Lib.h"
#include "../constants/StringConstants.h"
#include "../filesystem/CBinaryReader.h"
#include "../filesystem/Filesystem.h"
#include "../mapObjectConstructors/AObjectTypeHandler.h"
#include "../mapObjectConstructors/CObjectClassesHandler.h"
#include "../mapObjects/CGCreature.h"
#include "../mapObjects/MapObjects.h"
#include "../mapObjects/ObjectTemplate.h"
#include "../modding/ModScope.h"
#include "../networkPacks/Component.h"
#include "../networkPacks/ArtifactLocation.h"
#include "../spells/CSpellHandler.h"
#include "../texts/TextOperations.h"

#include <boost/crc.hpp>

VCMI_LIB_NAMESPACE_BEGIN

static std::string convertMapName(std::string input)
{
	boost::algorithm::to_lower(input);
	boost::algorithm::trim(input);
	boost::algorithm::erase_all(input, ".");

	size_t slashPos = input.find_last_of('/');

	if(slashPos != std::string::npos)
		return input.substr(slashPos + 1);

	return input;
}

CMapLoaderH3M::CMapLoaderH3M(const std::string & mapName, const std::string & modName, const std::string & encodingName, CInputStream * stream)
	: map(nullptr)
	, reader(new MapReaderH3M(stream))
	, inputStream(stream)
	, mapName(convertMapName(mapName))
	, modName(modName)
	, fileEncoding(encodingName)
{
}

//must be instantiated in .cpp file for access to complete types of all member fields
CMapLoaderH3M::~CMapLoaderH3M() = default;

std::unique_ptr<CMap> CMapLoaderH3M::loadMap(IGameCallback * cb)
{
	// Init map object by parsing the input buffer
	map = new CMap(cb);
	mapHeader = std::unique_ptr<CMapHeader>(dynamic_cast<CMapHeader *>(map));
	init();

	return std::unique_ptr<CMap>(dynamic_cast<CMap *>(mapHeader.release()));
}

std::unique_ptr<CMapHeader> CMapLoaderH3M::loadMapHeader()
{
	// Read header
	mapHeader = std::make_unique<CMapHeader>();
	readHeader();

	return std::move(mapHeader);
}

void CMapLoaderH3M::init()
{
	//TODO: get rid of double input process
	si64 temp_size = inputStream->getSize();
	inputStream->seek(0);

	auto * temp_buffer = new ui8[temp_size];
	inputStream->read(temp_buffer, temp_size);

	// Compute checksum
	boost::crc_32_type result;
	result.process_bytes(temp_buffer, temp_size);
	map->checksum = result.checksum();

	delete[] temp_buffer;
	inputStream->seek(0);

	readHeader();
	readDisposedHeroes();
	readMapOptions();
	readAllowedArtifacts();
	readAllowedSpellsAbilities();
	readRumors();
	readPredefinedHeroes();
	readTerrain();
	readObjectTemplates();
	readObjects();
	readEvents();

	map->calculateGuardingGreaturePositions();
	afterRead();
	//map->banWaterContent(); //Not sure if force this for custom scenarios
}

static MapIdentifiersH3M generateMapping(EMapFormat format)
{
	auto features = MapFormatFeaturesH3M::find(format, 0);
	MapIdentifiersH3M identifierMapper;

	if(features.levelROE)
		identifierMapper.loadMapping(VLC->settings()->getValue(EGameSettings::MAP_FORMAT_RESTORATION_OF_ERATHIA));
	if(features.levelAB)
		identifierMapper.loadMapping(VLC->settings()->getValue(EGameSettings::MAP_FORMAT_ARMAGEDDONS_BLADE));
	if(features.levelSOD)
		identifierMapper.loadMapping(VLC->settings()->getValue(EGameSettings::MAP_FORMAT_SHADOW_OF_DEATH));
	if(features.levelWOG)
		identifierMapper.loadMapping(VLC->settings()->getValue(EGameSettings::MAP_FORMAT_IN_THE_WAKE_OF_GODS));
	if(features.levelHOTA0)
		identifierMapper.loadMapping(VLC->settings()->getValue(EGameSettings::MAP_FORMAT_HORN_OF_THE_ABYSS));

	return identifierMapper;
}

static std::map<EMapFormat, MapIdentifiersH3M> generateMappings()
{
	std::map<EMapFormat, MapIdentifiersH3M> result;
	auto addMapping = [&result](EMapFormat format)
	{
		try
		{
			result[format] = generateMapping(format);
		}
		catch(const std::runtime_error &)
		{
			// unsupported map format - skip
		}
	};

	addMapping(EMapFormat::ROE);
	addMapping(EMapFormat::AB);
	addMapping(EMapFormat::SOD);
	addMapping(EMapFormat::HOTA);
	addMapping(EMapFormat::WOG);

	return result;
}

void CMapLoaderH3M::readHeader()
{
	// Map version
	mapHeader->version = static_cast<EMapFormat>(reader->readUInt32());

	if(mapHeader->version == EMapFormat::HOTA)
	{
		uint32_t hotaVersion = reader->readUInt32();
		features = MapFormatFeaturesH3M::find(mapHeader->version, hotaVersion);
		reader->setFormatLevel(features);

		if(hotaVersion > 0)
		{
			bool isMirrorMap = reader->readBool();
			bool isArenaMap = reader->readBool();

			//TODO: HotA
			if (isMirrorMap)
				logGlobal->warn("Map '%s': Mirror maps are not yet supported!", mapName);

			if (isArenaMap)
				logGlobal->warn("Map '%s': Arena maps are not supported!", mapName);
		}

		if(hotaVersion > 1)
		{
			[[maybe_unused]] uint8_t unknown = reader->readUInt32();
			assert(unknown == 12);
		}
	}
	else
	{
		features = MapFormatFeaturesH3M::find(mapHeader->version, 0);
		reader->setFormatLevel(features);
	}

	// optimization - load mappings only once to avoid slow parsing of map headers for map list
	static const std::map<EMapFormat, MapIdentifiersH3M> identifierMappers = generateMappings();
	const MapIdentifiersH3M & identifierMapper = identifierMappers.at(mapHeader->version);

	reader->setIdentifierRemapper(identifierMapper);

	// include basic mod
	if(mapHeader->version == EMapFormat::WOG)
		mapHeader->mods["wake-of-gods"];

	// Read map name, description, dimensions,...
	mapHeader->areAnyPlayers = reader->readBool();
	mapHeader->height = mapHeader->width = reader->readInt32();
	mapHeader->twoLevel = reader->readBool();
	mapHeader->name.appendTextID(readLocalizedString("header.name"));
	mapHeader->description.appendTextID(readLocalizedString("header.description"));
	mapHeader->author.appendRawString("");
	mapHeader->authorContact.appendRawString("");
	mapHeader->mapVersion.appendRawString("");
	mapHeader->creationDateTime = 0;
	mapHeader->difficulty = static_cast<EMapDifficulty>(reader->readInt8Checked(0, 4));

	if(features.levelAB)
		mapHeader->levelLimit = reader->readInt8Checked(0, std::min(100u, VLC->heroh->maxSupportedLevel()));
	else
		mapHeader->levelLimit = 0;

	readPlayerInfo();
	readVictoryLossConditions();
	readTeamInfo();
	readAllowedHeroes();
}

void CMapLoaderH3M::readPlayerInfo()
{
	for(int i = 0; i < mapHeader->players.size(); ++i)
	{
		auto & playerInfo = mapHeader->players[i];

		playerInfo.canHumanPlay = reader->readBool();
		playerInfo.canComputerPlay = reader->readBool();

		// If nobody can play with this player - skip loading of these properties
		if((!(playerInfo.canHumanPlay || playerInfo.canComputerPlay)))
		{
			if(features.levelROE)
				reader->skipUnused(6);
			if(features.levelAB)
				reader->skipUnused(6);
			if(features.levelSOD)
				reader->skipUnused(1);
			continue;
		}

		playerInfo.aiTactic = static_cast<EAiTactic>(reader->readInt8Checked(-1, 3));

		if(features.levelSOD)
			reader->skipUnused(1); //TODO: check meaning?

		std::set<FactionID> allowedFactions;

		reader->readBitmaskFactions(allowedFactions, false);

		const bool isFactionRandom = playerInfo.isFactionRandom = reader->readBool();
		const bool allFactionsAllowed = isFactionRandom && allowedFactions.size() == features.factionsCount;

		if(!allFactionsAllowed)
			playerInfo.allowedFactions = allowedFactions;

		playerInfo.hasMainTown = reader->readBool();
		if(playerInfo.hasMainTown)
		{
			if(features.levelAB)
			{
				playerInfo.generateHeroAtMainTown = reader->readBool();
				reader->skipUnused(1); //TODO: check meaning?
			}
			else
			{
				playerInfo.generateHeroAtMainTown = true;
			}

			playerInfo.posOfMainTown = reader->readInt3();
		}

		playerInfo.hasRandomHero = reader->readBool();
		playerInfo.mainCustomHeroId = reader->readHero();

		if(playerInfo.mainCustomHeroId != HeroTypeID::NONE)
		{
			playerInfo.mainCustomHeroPortrait = reader->readHeroPortrait();
			playerInfo.mainCustomHeroNameTextId = readLocalizedString(TextIdentifier("header", "player", i, "mainHeroName"));
		}

		if(features.levelAB)
		{
			reader->skipUnused(1); //TODO: check meaning?
			size_t heroCount = reader->readUInt32();
			for(size_t pp = 0; pp < heroCount; ++pp)
			{
				SHeroName vv;
				vv.heroId = reader->readHero();
				vv.heroName = readLocalizedString(TextIdentifier("header", "heroNames", vv.heroId.getNum()));

				playerInfo.heroesNames.push_back(vv);
			}
		}
	}
}

void CMapLoaderH3M::readVictoryLossConditions()
{
	mapHeader->triggeredEvents.clear();
	mapHeader->victoryMessage.clear();
	mapHeader->defeatMessage.clear();

	auto vicCondition = static_cast<EVictoryConditionType>(reader->readInt8Checked(-1, 12));

	EventCondition victoryCondition(EventCondition::STANDARD_WIN);
	EventCondition defeatCondition(EventCondition::DAYS_WITHOUT_TOWN);
	defeatCondition.value = 7;

	TriggeredEvent standardVictory;
	standardVictory.effect.type = EventEffect::VICTORY;
	standardVictory.effect.toOtherMessage.appendTextID("core.genrltxt.5");
	standardVictory.identifier = "standardVictory";
	standardVictory.description.clear(); // TODO: display in quest window
	standardVictory.onFulfill.appendTextID("core.genrltxt.659");
	standardVictory.trigger = EventExpression(victoryCondition);

	TriggeredEvent standardDefeat;
	standardDefeat.effect.type = EventEffect::DEFEAT;
	standardDefeat.effect.toOtherMessage.appendTextID("core.genrltxt.8");
	standardDefeat.identifier = "standardDefeat";
	standardDefeat.description.clear(); // TODO: display in quest window
	standardDefeat.onFulfill.appendTextID("core.genrltxt.7");
	standardDefeat.trigger = EventExpression(defeatCondition);

	// Specific victory conditions
	if(vicCondition == EVictoryConditionType::WINSTANDARD)
	{
		// create normal condition
		mapHeader->triggeredEvents.push_back(standardVictory);
		mapHeader->victoryIconIndex = 11;
		mapHeader->victoryMessage.appendTextID("core.vcdesc.0");
	}
	else
	{
		TriggeredEvent specialVictory;
		specialVictory.effect.type = EventEffect::VICTORY;
		specialVictory.identifier = "specialVictory";
		specialVictory.description.clear(); // TODO: display in quest window

		mapHeader->victoryIconIndex = static_cast<ui16>(vicCondition);

		bool allowNormalVictory = reader->readBool();
		bool appliesToAI = reader->readBool();

		switch(vicCondition)
		{
			case EVictoryConditionType::ARTIFACT:
			{
				assert(allowNormalVictory == true); // not selectable in editor
				EventCondition cond(EventCondition::HAVE_ARTIFACT);
				cond.objectType = reader->readArtifact();

				specialVictory.effect.toOtherMessage.appendTextID("core.genrltxt.281");
				specialVictory.onFulfill.appendTextID("core.genrltxt.280");
				specialVictory.trigger = EventExpression(cond);

				mapHeader->victoryMessage.appendTextID("core.vcdesc.1");
				break;
			}
			case EVictoryConditionType::GATHERTROOP:
			{
				EventCondition cond(EventCondition::HAVE_CREATURES);
				cond.objectType = reader->readCreature();
				cond.value = reader->readInt32();

				specialVictory.effect.toOtherMessage.appendTextID("core.genrltxt.277");
				specialVictory.onFulfill.appendTextID("core.genrltxt.276");
				specialVictory.trigger = EventExpression(cond);

				mapHeader->victoryMessage.appendTextID("core.vcdesc.2");
				break;
			}
			case EVictoryConditionType::GATHERRESOURCE:
			{
				EventCondition cond(EventCondition::HAVE_RESOURCES);
				cond.objectType = reader->readGameResID();
				cond.value = reader->readInt32();

				specialVictory.effect.toOtherMessage.appendTextID("core.genrltxt.279");
				specialVictory.onFulfill.appendTextID("core.genrltxt.278");
				specialVictory.trigger = EventExpression(cond);

				mapHeader->victoryMessage.appendTextID("core.vcdesc.3");
				break;
			}
			case EVictoryConditionType::BUILDCITY:
			{
				assert(appliesToAI == true); // not selectable in editor
				EventExpression::OperatorAll oper;
				EventCondition cond(EventCondition::HAVE_BUILDING);
				cond.position = reader->readInt3();
				cond.objectType = BuildingID::HALL_LEVEL(reader->readInt8Checked(0,3) + 1);
				oper.expressions.emplace_back(cond);
				cond.objectType = BuildingID::FORT_LEVEL(reader->readInt8Checked(0, 2));
				oper.expressions.emplace_back(cond);

				specialVictory.effect.toOtherMessage.appendTextID("core.genrltxt.283");
				specialVictory.onFulfill.appendTextID("core.genrltxt.282");
				specialVictory.trigger = EventExpression(oper);

				mapHeader->victoryMessage.appendTextID("core.vcdesc.4");
				break;
			}
			case EVictoryConditionType::BUILDGRAIL:
			{
				assert(allowNormalVictory == true); // not selectable in editor
				assert(appliesToAI == true); // not selectable in editor
				EventCondition cond(EventCondition::HAVE_BUILDING);
				cond.objectType = BuildingID(BuildingID::GRAIL);
				cond.position = reader->readInt3();
				if(cond.position.z > 2)
					cond.position = int3(-1, -1, -1);

				specialVictory.effect.toOtherMessage.appendTextID("core.genrltxt.285");
				specialVictory.onFulfill.appendTextID("core.genrltxt.284");
				specialVictory.trigger = EventExpression(cond);

				mapHeader->victoryMessage.appendTextID("core.vcdesc.5");
				break;
			}
			case EVictoryConditionType::BEATHERO:
			{
				if (!allowNormalVictory)
					logGlobal->debug("Map %s: Has 'beat hero' as victory condition, but 'allow normal victory' not set. Ignoring", mapName);
				allowNormalVictory = true; // H3 behavior
				assert(appliesToAI == false); // not selectable in editor
				EventCondition cond(EventCondition::DESTROY);
				cond.objectType = MapObjectID(MapObjectID::HERO);
				cond.position = reader->readInt3();

				specialVictory.effect.toOtherMessage.appendTextID("core.genrltxt.253");
				specialVictory.onFulfill.appendTextID("core.genrltxt.252");
				specialVictory.trigger = EventExpression(cond);

				mapHeader->victoryMessage.appendTextID("core.vcdesc.6");
				break;
			}
			case EVictoryConditionType::CAPTURECITY:
			{
				EventCondition cond(EventCondition::CONTROL);
				cond.objectType = MapObjectID(MapObjectID::TOWN);
				cond.position = reader->readInt3();

				specialVictory.effect.toOtherMessage.appendTextID("core.genrltxt.250");
				specialVictory.onFulfill.appendTextID("core.genrltxt.249");
				specialVictory.trigger = EventExpression(cond);

				mapHeader->victoryMessage.appendTextID("core.vcdesc.7");
				break;
			}
			case EVictoryConditionType::BEATMONSTER:
			{
				assert(appliesToAI == true); // not selectable in editor
				EventCondition cond(EventCondition::DESTROY);
				cond.objectType = MapObjectID(MapObjectID::MONSTER);
				cond.position = reader->readInt3();

				specialVictory.effect.toOtherMessage.appendTextID("core.genrltxt.287");
				specialVictory.onFulfill.appendTextID("core.genrltxt.286");
				specialVictory.trigger = EventExpression(cond);

				mapHeader->victoryMessage.appendTextID("core.vcdesc.8");
				break;
			}
			case EVictoryConditionType::TAKEDWELLINGS:
			{
				EventExpression::OperatorAll oper;
				oper.expressions.emplace_back(EventCondition(EventCondition::CONTROL, 0, Obj(Obj::CREATURE_GENERATOR1)));
				oper.expressions.emplace_back(EventCondition(EventCondition::CONTROL, 0, Obj(Obj::CREATURE_GENERATOR4)));

				specialVictory.effect.toOtherMessage.appendTextID("core.genrltxt.289");
				specialVictory.onFulfill.appendTextID("core.genrltxt.288");
				specialVictory.trigger = EventExpression(oper);

				mapHeader->victoryMessage.appendTextID("core.vcdesc.9");
				break;
			}
			case EVictoryConditionType::TAKEMINES:
			{
				EventCondition cond(EventCondition::CONTROL);
				cond.objectType = MapObjectID(MapObjectID::MINE);

				specialVictory.effect.toOtherMessage.appendTextID("core.genrltxt.291");
				specialVictory.onFulfill.appendTextID("core.genrltxt.290");
				specialVictory.trigger = EventExpression(cond);

				mapHeader->victoryMessage.appendTextID("core.vcdesc.10");
				break;
			}
			case EVictoryConditionType::TRANSPORTITEM:
			{
				assert(allowNormalVictory == true); // not selectable in editor
				EventCondition cond(EventCondition::TRANSPORT);
				cond.objectType = reader->readArtifact8();
				cond.position = reader->readInt3();

				specialVictory.effect.toOtherMessage.appendTextID("core.genrltxt.293");
				specialVictory.onFulfill.appendTextID("core.genrltxt.292");
				specialVictory.trigger = EventExpression(cond);

				mapHeader->victoryMessage.appendTextID("core.vcdesc.11");
				break;
			}
			case EVictoryConditionType::HOTA_ELIMINATE_ALL_MONSTERS:
			{
				assert(appliesToAI == false); // not selectable in editor
				EventCondition cond(EventCondition::DESTROY);
				cond.objectType = MapObjectID(MapObjectID::MONSTER);

				specialVictory.effect.toOtherMessage.appendTextID("vcmi.map.victoryCondition.eliminateMonsters.toOthers");
				specialVictory.onFulfill.appendTextID("vcmi.map.victoryCondition.eliminateMonsters.toSelf");
				specialVictory.trigger = EventExpression(cond);

				mapHeader->victoryMessage.appendTextID("core.vcdesc.12");
				mapHeader->victoryIconIndex = 12;
				break;
			}
			case EVictoryConditionType::HOTA_SURVIVE_FOR_DAYS:
			{
				assert(appliesToAI == false); // not selectable in editor
				EventCondition cond(EventCondition::DAYS_PASSED);
				cond.value = reader->readUInt32();

				specialVictory.effect.toOtherMessage.appendTextID("vcmi.map.victoryCondition.daysPassed.toOthers");
				specialVictory.onFulfill.appendTextID("vcmi.map.victoryCondition.daysPassed.toSelf");
				specialVictory.trigger = EventExpression(cond);

				mapHeader->victoryMessage.appendTextID("core.vcdesc.13");
				mapHeader->victoryIconIndex = 13;
				break;
			}
			default:
				assert(0);
		}

		if(allowNormalVictory)
		{
			size_t playersOnMap = boost::range::count_if(
				mapHeader->players,
				[](const PlayerInfo & info)
				{
					return info.canAnyonePlay();
				}
			);

			if(playersOnMap == 1)
			{
				logGlobal->warn("Map %s: Only one player exists, but normal victory allowed!", mapName);
				allowNormalVictory = false; // makes sense? Not much. Works as H3? Yes!
			}
		}

		// if condition is human-only turn it into following construction: AllOf(human, condition)
		if(!appliesToAI)
		{
			EventExpression::OperatorAll oper;
			EventCondition notAI(EventCondition::IS_HUMAN);
			notAI.value = 1;
			oper.expressions.emplace_back(notAI);
			oper.expressions.push_back(specialVictory.trigger.get());
			specialVictory.trigger = EventExpression(oper);
		}

		// if normal victory allowed - add one more quest
		if(allowNormalVictory)
		{
			mapHeader->victoryMessage.appendRawString(" / ");
			mapHeader->victoryMessage.appendTextID("core.vcdesc.0");
			mapHeader->triggeredEvents.push_back(standardVictory);
		}
		mapHeader->triggeredEvents.push_back(specialVictory);
	}

	// Read loss conditions
	auto lossCond = static_cast<ELossConditionType>(reader->readInt8Checked(-1, 2));
	if(lossCond == ELossConditionType::LOSSSTANDARD)
	{
		mapHeader->defeatIconIndex = 3;
		mapHeader->defeatMessage.appendTextID("core.lcdesc.0");
	}
	else
	{
		TriggeredEvent specialDefeat;
		specialDefeat.effect.type = EventEffect::DEFEAT;
		specialDefeat.effect.toOtherMessage.appendTextID("core.genrltxt.5");
		specialDefeat.identifier = "specialDefeat";
		specialDefeat.description.clear(); // TODO: display in quest window

		mapHeader->defeatIconIndex = static_cast<ui16>(lossCond);

		switch(lossCond)
		{
			case ELossConditionType::LOSSCASTLE:
			{
				EventExpression::OperatorNone noneOf;
				EventCondition cond(EventCondition::CONTROL);
				cond.objectType = Obj(Obj::TOWN);
				cond.position = reader->readInt3();

				noneOf.expressions.emplace_back(cond);
				specialDefeat.onFulfill.appendTextID("core.genrltxt.251");
				specialDefeat.trigger = EventExpression(noneOf);

				mapHeader->defeatMessage.appendTextID("core.lcdesc.1");
				break;
			}
			case ELossConditionType::LOSSHERO:
			{
				EventExpression::OperatorNone noneOf;
				EventCondition cond(EventCondition::CONTROL);
				cond.objectType = Obj(Obj::HERO);
				cond.position = reader->readInt3();

				noneOf.expressions.emplace_back(cond);
				specialDefeat.onFulfill.appendTextID("core.genrltxt.253");
				specialDefeat.trigger = EventExpression(noneOf);

				mapHeader->defeatMessage.appendTextID("core.lcdesc.2");
				break;
			}
			case ELossConditionType::TIMEEXPIRES:
			{
				EventCondition cond(EventCondition::DAYS_PASSED);
				cond.value = reader->readUInt16();

				specialDefeat.onFulfill.appendTextID("core.genrltxt.254");
				specialDefeat.trigger = EventExpression(cond);

				mapHeader->defeatMessage.appendTextID("core.lcdesc.3");
				break;
			}
		}
		// turn simple loss condition into complete one that can be evaluated later:
		// - any of :
		//   - days without town: 7
		//   - all of:
		//     - is human
		//     - (expression)

		EventExpression::OperatorAll allOf;
		EventCondition isHuman(EventCondition::IS_HUMAN);
		isHuman.value = 1;

		allOf.expressions.emplace_back(isHuman);
		allOf.expressions.push_back(specialDefeat.trigger.get());
		specialDefeat.trigger = EventExpression(allOf);

		mapHeader->triggeredEvents.push_back(specialDefeat);
	}
	mapHeader->triggeredEvents.push_back(standardDefeat);
}

void CMapLoaderH3M::readTeamInfo()
{
	mapHeader->howManyTeams = reader->readUInt8();
	if(mapHeader->howManyTeams > 0)
	{
		// Teams
		for(int i = 0; i < PlayerColor::PLAYER_LIMIT_I; ++i)
			mapHeader->players[i].team = TeamID(reader->readUInt8());
	}
	else
	{
		// No alliances
		for(int i = 0; i < PlayerColor::PLAYER_LIMIT_I; i++)
			if(mapHeader->players[i].canComputerPlay || mapHeader->players[i].canHumanPlay)
				mapHeader->players[i].team = TeamID(mapHeader->howManyTeams++);
	}
}

void CMapLoaderH3M::readAllowedHeroes()
{
	mapHeader->allowedHeroes = VLC->heroh->getDefaultAllowed();

	if(features.levelHOTA0)
		reader->readBitmaskHeroesSized(mapHeader->allowedHeroes, false);
	else
		reader->readBitmaskHeroes(mapHeader->allowedHeroes, false);

	if(features.levelAB)
	{
		size_t placeholdersQty = reader->readUInt32();

		for (size_t i = 0; i < placeholdersQty; ++i)
		{
			auto heroID = reader->readHero();
			mapHeader->reservedCampaignHeroes.insert(heroID);
		}
	}
}

void CMapLoaderH3M::readDisposedHeroes()
{
	// Reading disposed heroes (20 bytes)
	if(features.levelSOD)
	{
		size_t disp = reader->readUInt8();
		map->disposedHeroes.resize(disp);
		for(size_t g = 0; g < disp; ++g)
		{
			map->disposedHeroes[g].heroId = reader->readHero();
			map->disposedHeroes[g].portrait = reader->readHeroPortrait();
			map->disposedHeroes[g].name = readLocalizedString(TextIdentifier("header", "heroes", map->disposedHeroes[g].heroId.getNum()));
			reader->readBitmaskPlayers(map->disposedHeroes[g].players, false);
		}
	}
}

void CMapLoaderH3M::readMapOptions()
{
	//omitting NULLS
	reader->skipZero(31);

	if(features.levelHOTA0)
	{
		//TODO: HotA
		bool allowSpecialMonths = reader->readBool();
		if(!allowSpecialMonths)
			logGlobal->warn("Map '%s': Option 'allow special months' is not implemented!", mapName);
		reader->skipZero(3);
	}

	if(features.levelHOTA1)
	{
		// Unknown, may be another "sized bitmap", e.g
		// 4 bytes - size of bitmap (16)
		// 2 bytes - bitmap data (16 bits / 2 bytes)
		[[maybe_unused]] uint8_t unknownConstant = reader->readUInt8();
		assert(unknownConstant == 16);
		reader->skipZero(5);
	}

	if(features.levelHOTA3)
	{
		//TODO: HotA
		int32_t roundLimit = reader->readInt32();
		if(roundLimit != -1)
			logGlobal->warn("Map '%s': roundLimit of %d is not implemented!", mapName, roundLimit);
	}
}

void CMapLoaderH3M::readAllowedArtifacts()
{
	map->allowedArtifact = VLC->arth->getDefaultAllowed();

	if(features.levelAB)
	{
		if(features.levelHOTA0)
			reader->readBitmaskArtifactsSized(map->allowedArtifact, true);
		else
			reader->readBitmaskArtifacts(map->allowedArtifact, true);
	}

	// ban combo artifacts
	if(!features.levelSOD)
	{
		for(auto const & artifact : VLC->arth->objects)
			if(artifact->isCombined())
				map->allowedArtifact.erase(artifact->getId());
	}

	if(!features.levelAB)
	{
		map->allowedArtifact.erase(ArtifactID::VIAL_OF_DRAGON_BLOOD);
		map->allowedArtifact.erase(ArtifactID::ARMAGEDDONS_BLADE);
	}

	// Messy, but needed
	for(TriggeredEvent & event : map->triggeredEvents)
	{
		auto patcher = [&](EventCondition cond) -> EventExpression::Variant
		{
			if(cond.condition == EventCondition::HAVE_ARTIFACT || cond.condition == EventCondition::TRANSPORT)
			{
				map->allowedArtifact.erase(cond.objectType.as<ArtifactID>());
			}
			return cond;
		};

		event.trigger = event.trigger.morph(patcher);
	}
}

void CMapLoaderH3M::readAllowedSpellsAbilities()
{
	map->allowedSpells = VLC->spellh->getDefaultAllowed();
	map->allowedAbilities = VLC->skillh->getDefaultAllowed();

	if(features.levelSOD)
	{
		reader->readBitmaskSpells(map->allowedSpells, true);
		reader->readBitmaskSkills(map->allowedAbilities, true);
	}
}

void CMapLoaderH3M::readRumors()
{
	size_t rumorsCount = reader->readUInt32();
	assert(rumorsCount < 1000); // sanity check

	for(size_t it = 0; it < rumorsCount; it++)
	{
		Rumor ourRumor;
		ourRumor.name = readBasicString();
		ourRumor.text.appendTextID(readLocalizedString(TextIdentifier("header", "rumor", it, "text")));
		map->rumors.push_back(ourRumor);
	}
}

void CMapLoaderH3M::readPredefinedHeroes()
{
	if(!features.levelSOD)
		return;

	uint32_t heroesCount = features.heroesCount;

	if(features.levelHOTA0)
		heroesCount = reader->readUInt32();

	assert(heroesCount <= features.heroesCount);

	for(int heroID = 0; heroID < heroesCount; heroID++)
	{
		bool custom = reader->readBool();
		if(!custom)
			continue;

		auto * hero = new CGHeroInstance(map->cb);
		hero->ID = Obj::HERO;
		hero->subID = heroID;

		bool hasExp = reader->readBool();
		if(hasExp)
		{
			hero->exp = reader->readUInt32();
		}
		else
		{
			hero->exp = 0;
		}

		bool hasSecSkills = reader->readBool();
		if(hasSecSkills)
		{
			uint32_t howMany = reader->readUInt32();
			hero->secSkills.resize(howMany);
			for(int yy = 0; yy < howMany; ++yy)
			{
				hero->secSkills[yy].first = reader->readSkill();
				hero->secSkills[yy].second = reader->readInt8Checked(1,3);
			}
		}

		loadArtifactsOfHero(hero);

		bool hasCustomBio = reader->readBool();
		if(hasCustomBio)
			hero->biographyCustomTextId = readLocalizedString(TextIdentifier("heroes", heroID, "biography"));

		// 0xFF is default, 00 male, 01 female
		hero->gender = static_cast<EHeroGender>(reader->readInt8Checked(-1, 1));
		assert(hero->gender == EHeroGender::MALE || hero->gender == EHeroGender::FEMALE || hero->gender == EHeroGender::DEFAULT);

		bool hasCustomSpells = reader->readBool();
		if(hasCustomSpells)
			reader->readBitmaskSpells(hero->spells, false);

		bool hasCustomPrimSkills = reader->readBool();
		if(hasCustomPrimSkills)
		{
			for(int skillID = 0; skillID < GameConstants::PRIMARY_SKILLS; skillID++)
			{
				hero->pushPrimSkill(static_cast<PrimarySkill>(skillID), reader->readUInt8());
			}
		}
		map->predefinedHeroes.emplace_back(hero);

		logGlobal->debug("Map '%s': Hero predefined in map: %s", mapName, VLC->heroh->getById(hero->getHeroType())->getJsonKey());
	}
}

void CMapLoaderH3M::loadArtifactsOfHero(CGHeroInstance * hero)
{
	bool hasArtSet = reader->readBool();

	// True if artifact set is not default (hero has some artifacts)
	if(!hasArtSet)
		return;

	// Workaround - if hero has customized artifacts game should not attempt to add spellbook based on hero type
	hero->spells.insert(SpellID::SPELLBOOK_PRESET);

	if(!hero->artifactsWorn.empty() || !hero->artifactsInBackpack.empty())
	{
		logGlobal->debug("Hero %d at %s has set artifacts twice (in map properties and on adventure map instance). Using the latter set...", hero->getHeroType().getNum(), hero->pos.toString());

		hero->artifactsInBackpack.clear();
		while(!hero->artifactsWorn.empty())
			hero->eraseArtSlot(hero->artifactsWorn.begin()->first);
	}

	for(int i = 0; i < features.artifactSlotsCount; i++)
		loadArtifactToSlot(hero, i);

	// bag artifacts
	// number of artifacts in hero's bag
	size_t amount = reader->readUInt16();
	for(size_t i = 0; i < amount; ++i)
	{
		loadArtifactToSlot(hero, ArtifactPosition::BACKPACK_START + static_cast<int>(hero->artifactsInBackpack.size()));
	}
}

bool CMapLoaderH3M::loadArtifactToSlot(CGHeroInstance * hero, int slot)
{
	ArtifactID artifactID = reader->readArtifact();

	if(artifactID == ArtifactID::NONE)
		return false;

	const Artifact * art = artifactID.toEntity(VLC);

	if(!art)
	{
		logGlobal->warn("Map '%s': Invalid artifact in hero's backpack, ignoring...", mapName);
		return false;
	}

	if(art->isBig() && slot >= ArtifactPosition::BACKPACK_START)
	{
		logGlobal->warn("Map '%s': A big artifact (war machine) in hero's backpack, ignoring...", mapName);
		return false;
	}

	// H3 bug workaround - Enemy hero on 3rd scenario of Good1.h3c campaign ("Long Live The Queen")
	// He has Shackles of War (normally - MISC slot artifact) in LEFT_HAND slot set in editor
	// Artifact seems to be missing in game, so skip artifacts that don't fit target slot
	auto * artifact = ArtifactUtils::createArtifact(map, artifactID);
	if(artifact->canBePutAt(hero, ArtifactPosition(slot)))
	{
		artifact->putAt(*hero, ArtifactPosition(slot));
	}
	else
	{
		logGlobal->warn("Map '%s': Artifact '%s' can't be put at the slot %d", mapName, artifact->artType->getNameTranslated(), slot);
		return false;
	}

	return true;
}

void CMapLoaderH3M::readTerrain()
{
	map->initTerrain();

	// Read terrain
	int3 pos;
	for(pos.z = 0; pos.z < map->levels(); ++pos.z)
	{
		//OH3 format is [z][y][x]
		for(pos.y = 0; pos.y < map->height; pos.y++)
		{
			for(pos.x = 0; pos.x < map->width; pos.x++)
			{
				auto & tile = map->getTile(pos);
				tile.terType = VLC->terrainTypeHandler->getById(reader->readTerrain());
				tile.terView = reader->readUInt8();
				tile.riverType = VLC->riverTypeHandler->getById(reader->readRiver());
				tile.riverDir = reader->readUInt8();
				tile.roadType = VLC->roadTypeHandler->getById(reader->readRoad());
				tile.roadDir = reader->readUInt8();
				tile.extTileFlags = reader->readUInt8();
				tile.blocked = !tile.terType->isPassable();
				tile.visitable = false;

				assert(tile.terType->getId() != ETerrainId::NONE);
			}
		}
	}
	map->calculateWaterContent();
}

void CMapLoaderH3M::readObjectTemplates()
{
	uint32_t defAmount = reader->readUInt32();

	templates.reserve(defAmount);

	// Read custom defs
	for(int defID = 0; defID < defAmount; ++defID)
	{
		auto tmpl = reader->readObjectTemplate();
		templates.push_back(tmpl);

		if (!CResourceHandler::get()->existsResource(tmpl->animationFile.addPrefix("SPRITES/")))
			logMod->warn("Template animation %s of type (%d %d) is missing!", tmpl->animationFile.getOriginalName(), tmpl->id, tmpl->subid );
	}
}

CGObjectInstance * CMapLoaderH3M::readEvent(const int3 & mapPosition, const ObjectInstanceID & idToBeGiven)
{
	auto * object = new CGEvent(map->cb);

	readBoxContent(object, mapPosition, idToBeGiven);

	reader->readBitmaskPlayers(object->availableFor, false);
	object->computerActivate = reader->readBool();
	object->removeAfterVisit = reader->readBool();

	reader->skipZero(4);

	if(features.levelHOTA3)
		object->humanActivate = reader->readBool();
	else
		object->humanActivate = true;

	return object;
}

CGObjectInstance * CMapLoaderH3M::readPandora(const int3 & mapPosition, const ObjectInstanceID & idToBeGiven)
{
	auto * object = new CGPandoraBox(map->cb);
	readBoxContent(object, mapPosition, idToBeGiven);
	return object;
}

void CMapLoaderH3M::readBoxContent(CGPandoraBox * object, const int3 & mapPosition, const ObjectInstanceID & idToBeGiven)
{
	readMessageAndGuards(object->message, object, mapPosition);
	Rewardable::VisitInfo vinfo;
	auto & reward = vinfo.reward;

	reward.heroExperience = reader->readUInt32();
	reward.manaDiff = reader->readInt32();
	if(auto val = reader->readInt8Checked(-3, 3))
		reward.bonuses.emplace_back(BonusDuration::ONE_BATTLE, BonusType::MORALE, BonusSource::OBJECT_INSTANCE, val, BonusSourceID(idToBeGiven));
	if(auto val = reader->readInt8Checked(-3, 3))
		reward.bonuses.emplace_back(BonusDuration::ONE_BATTLE, BonusType::LUCK, BonusSource::OBJECT_INSTANCE, val, BonusSourceID(idToBeGiven));

	reader->readResources(reward.resources);
	for(int x = 0; x < GameConstants::PRIMARY_SKILLS; ++x)
		reward.primary.at(x) = reader->readUInt8();

	size_t gabn = reader->readUInt8(); //number of gained abilities
	for(size_t oo = 0; oo < gabn; ++oo)
	{
		auto rId = reader->readSkill();
		auto rVal = reader->readInt8Checked(1,3);

		reward.secondary[rId] = rVal;
	}
	size_t gart = reader->readUInt8(); //number of gained artifacts
	for(size_t oo = 0; oo < gart; ++oo)
		reward.artifacts.push_back(reader->readArtifact());

	size_t gspel = reader->readUInt8(); //number of gained spells
	for(size_t oo = 0; oo < gspel; ++oo)
		reward.spells.push_back(reader->readSpell());

	size_t gcre = reader->readUInt8(); //number of gained creatures
	for(size_t oo = 0; oo < gcre; ++oo)
	{
		auto rId = reader->readCreature();
		auto rVal = reader->readUInt16();

		reward.creatures.emplace_back(rId, rVal);
	}

	vinfo.visitType = Rewardable::EEventType::EVENT_FIRST_VISIT;
	object->configuration.info.push_back(vinfo);

	reader->skipZero(8);
}

CGObjectInstance * CMapLoaderH3M::readMonster(const int3 & mapPosition, const ObjectInstanceID & objectInstanceID)
{
	auto * object = new CGCreature(map->cb);

	if(features.levelAB)
	{
		object->identifier = reader->readUInt32();
		map->questIdentifierToId[object->identifier] = objectInstanceID;
	}

	auto * hlp = new CStackInstance();
	hlp->count = reader->readUInt16();

	//type will be set during initialization
	object->putStack(SlotID(0), hlp);

	object->character = reader->readInt8Checked(0, 4);

	bool hasMessage = reader->readBool();
	if(hasMessage)
	{
		object->message.appendTextID(readLocalizedString(TextIdentifier("monster", mapPosition.x, mapPosition.y, mapPosition.z, "message")));
		reader->readResources(object->resources);
		object->gainedArtifact = reader->readArtifact();
	}
	object->neverFlees = reader->readBool();
	object->notGrowingTeam = reader->readBool();
	reader->skipZero(2);

	if(features.levelHOTA3)
	{
		//TODO: HotA
		int32_t aggressionExact = reader->readInt32(); // -1 = default, 1-10 = possible values range
		bool joinOnlyForMoney = reader->readBool(); // if true, monsters will only join for money
		int32_t joinPercent = reader->readInt32(); // 100 = default, percent of monsters that will join on successful aggression check
		int32_t upgradedStack = reader->readInt32(); // Presence of upgraded stack, -1 = random, 0 = never, 1 = always
		int32_t stacksCount = reader->readInt32(); // TODO: check possible values. How many creature stacks will be present on battlefield, -1 = default

		if(aggressionExact != -1 || joinOnlyForMoney || joinPercent != 100 || upgradedStack != -1 || stacksCount != -1)
			logGlobal->warn(
				"Map '%s': Wandering monsters %s settings %d %d %d %d %d are not implemented!",
				mapName,
				mapPosition.toString(),
				aggressionExact,
				int(joinOnlyForMoney),
				joinPercent,
				upgradedStack,
				stacksCount
			);
	}

	return object;
}

CGObjectInstance * CMapLoaderH3M::readSign(const int3 & mapPosition)
{
	auto * object = new CGSignBottle(map->cb);
	object->message.appendTextID(readLocalizedString(TextIdentifier("sign", mapPosition.x, mapPosition.y, mapPosition.z, "message")));
	reader->skipZero(4);
	return object;
}

CGObjectInstance * CMapLoaderH3M::readWitchHut(const int3 & position, std::shared_ptr<const ObjectTemplate> objectTemplate)
{
	auto * object = readGeneric(position, objectTemplate);
	auto * rewardable = dynamic_cast<CRewardableObject*>(object);

	// AB and later maps have allowed abilities defined in H3M
	if(features.levelAB)
	{
		std::set<SecondarySkill> allowedAbilities;
		reader->readBitmaskSkills(allowedAbilities, false);

		if (rewardable)
		{
			if(allowedAbilities.size() != 1)
			{
				auto defaultAllowed = VLC->skillh->getDefaultAllowed();

				for(int skillID = features.skillsCount; skillID < defaultAllowed.size(); ++skillID)
					if(defaultAllowed.count(skillID))
						allowedAbilities.insert(SecondarySkill(skillID));
			}

			JsonNode variable;
			if (allowedAbilities.size() == 1)
			{
				variable.String() = VLC->skills()->getById(*allowedAbilities.begin())->getJsonKey();
			}
			else
			{
				JsonVector anyOfList;
				for (auto const & skill : allowedAbilities)
				{
					JsonNode entry;
					entry.String() = VLC->skills()->getById(skill)->getJsonKey();
					anyOfList.push_back(entry);
				}
				variable["anyOf"].Vector() = anyOfList;
			}

			variable.setModScope(ModScope::scopeGame()); // list may include skills from all mods
			rewardable->configuration.presetVariable("secondarySkill", "gainedSkill", variable);
		}
		else
		{
			logGlobal->warn("Failed to set allowed secondary skills to a Witch Hut! Object is not rewardable!");
		}
	}
	return object;
}

CGObjectInstance * CMapLoaderH3M::readScholar(const int3 & position, std::shared_ptr<const ObjectTemplate> objectTemplate)
{
	enum class ScholarBonusType : int8_t {
		RANDOM = -1,
		PRIM_SKILL = 0,
		SECONDARY_SKILL = 1,
		SPELL = 2,
	};

	auto * object = readGeneric(position, objectTemplate);
	auto * rewardable = dynamic_cast<CRewardableObject*>(object);

	uint8_t bonusTypeRaw = reader->readInt8Checked(-1, 2);
	auto bonusType = static_cast<ScholarBonusType>(bonusTypeRaw);
	auto bonusID = reader->readUInt8();

	if (rewardable)
	{
		switch (bonusType)
		{
			case ScholarBonusType::PRIM_SKILL:
			{
				JsonNode variable;
				JsonNode dice;
				variable.String() = NPrimarySkill::names[bonusID];
				variable.setModScope(ModScope::scopeGame());
				dice.Integer() = 80;
				rewardable->configuration.presetVariable("primarySkill", "gainedStat", variable);
				rewardable->configuration.presetVariable("dice", "0", dice);
				break;
			}
			case ScholarBonusType::SECONDARY_SKILL:
			{
				JsonNode variable;
				JsonNode dice;
				variable.String() = VLC->skills()->getByIndex(bonusID)->getJsonKey();
				variable.setModScope(ModScope::scopeGame());
				dice.Integer() = 50;
				rewardable->configuration.presetVariable("secondarySkill", "gainedSkill", variable);
				rewardable->configuration.presetVariable("dice", "0", dice);
				break;
			}
			case ScholarBonusType::SPELL:
			{
				JsonNode variable;
				JsonNode dice;
				variable.String() = VLC->spells()->getByIndex(bonusID)->getJsonKey();
				variable.setModScope(ModScope::scopeGame());
				dice.Integer() = 20;
				rewardable->configuration.presetVariable("spell", "gainedSpell", variable);
				rewardable->configuration.presetVariable("dice", "0", dice);
				break;
			}
			case ScholarBonusType::RANDOM:
				break;// No-op
			default:
				logGlobal->warn("Map '%s': Invalid Scholar settings! Ignoring...", mapName);
		}
	}
	else
	{
		logGlobal->warn("Failed to set reward parameters for a Scholar! Object is not rewardable!");
	}

	reader->skipZero(6);
	return object;
}

CGObjectInstance * CMapLoaderH3M::readGarrison(const int3 & mapPosition)
{
	auto * object = new CGGarrison(map->cb);

	setOwnerAndValidate(mapPosition, object, reader->readPlayer32());
	readCreatureSet(object, 7);
	if(features.levelAB)
		object->removableUnits = reader->readBool();
	else
		object->removableUnits = true;

	reader->skipZero(8);
	return object;
}

CGObjectInstance * CMapLoaderH3M::readArtifact(const int3 & mapPosition, std::shared_ptr<const ObjectTemplate> objectTemplate)
{
	ArtifactID artID = ArtifactID::NONE; //random, set later
	SpellID spellID = SpellID::NONE;
	auto * object = new CGArtifact(map->cb);

	readMessageAndGuards(object->message, object, mapPosition);

	if(objectTemplate->id == Obj::SPELL_SCROLL)
	{
		spellID = reader->readSpell32();
		artID = ArtifactID::SPELL_SCROLL;
	}
	else if(objectTemplate->id == Obj::ARTIFACT)
	{
		//specific artifact
		artID = ArtifactID(objectTemplate->subid);
	}

	object->storedArtifact = ArtifactUtils::createArtifact(map, artID, spellID.getNum());
	return object;
}

CGObjectInstance * CMapLoaderH3M::readResource(const int3 & mapPosition, std::shared_ptr<const ObjectTemplate> objectTemplate)
{
	auto * object = new CGResource(map->cb);

	readMessageAndGuards(object->message, object, mapPosition);

	object->amount = reader->readUInt32();
	if(GameResID(objectTemplate->subid) == GameResID(EGameResID::GOLD))
	{
		// Gold is multiplied by 100.
		object->amount *= CGResource::GOLD_AMOUNT_MULTIPLIER;
	}
	reader->skipZero(4);
	return object;
}

CGObjectInstance * CMapLoaderH3M::readMine(const int3 & mapPosition, std::shared_ptr<const ObjectTemplate> objectTemplate)
{
	auto * object = new CGMine(map->cb);
	if(objectTemplate->subid < 7)
	{
		setOwnerAndValidate(mapPosition, object, reader->readPlayer32());
	}
	else
	{
		object->setOwner(PlayerColor::NEUTRAL);
		reader->readBitmaskResources(object->abandonedMineResources, false);
	}
	return object;
}

CGObjectInstance * CMapLoaderH3M::readDwelling(const int3 & position)
{
	auto * object = new CGDwelling(map->cb);
	setOwnerAndValidate(position, object, reader->readPlayer32());
	return object;
}

CGObjectInstance * CMapLoaderH3M::readDwellingRandom(const int3 & mapPosition, std::shared_ptr<const ObjectTemplate> objectTemplate)
{
	auto * object = new CGDwelling(map->cb);

	setOwnerAndValidate(mapPosition, object, reader->readPlayer32());

	object->randomizationInfo = CGDwellingRandomizationInfo();

	bool hasFactionInfo = objectTemplate->id == Obj::RANDOM_DWELLING || objectTemplate->id == Obj::RANDOM_DWELLING_LVL;
	bool hasLevelInfo = objectTemplate->id == Obj::RANDOM_DWELLING || objectTemplate->id == Obj::RANDOM_DWELLING_FACTION;

	if (hasFactionInfo)
	{
		object->randomizationInfo->identifier = reader->readUInt32();

		if(object->randomizationInfo->identifier == 0)
			reader->readBitmaskFactions(object->randomizationInfo->allowedFactions, false);
	}
	else
		object->randomizationInfo->allowedFactions.insert(FactionID(objectTemplate->subid));

	if(hasLevelInfo)
	{
		object->randomizationInfo->minLevel = std::max(reader->readUInt8(), static_cast<ui8>(0)) + 1;
		object->randomizationInfo->maxLevel = std::min(reader->readUInt8(), static_cast<ui8>(6)) + 1;
	}
	else
	{
		object->randomizationInfo->minLevel = objectTemplate->subid;
		object->randomizationInfo->maxLevel = objectTemplate->subid;
	}

	return object;
}

CGObjectInstance * CMapLoaderH3M::readShrine(const int3 & position, std::shared_ptr<const ObjectTemplate> objectTemplate)
{
	auto * object = readGeneric(position, objectTemplate);
	auto * rewardable = dynamic_cast<CRewardableObject*>(object);

	SpellID spell = reader->readSpell32();

	if (rewardable)
	{
		if(spell != SpellID::NONE)
		{
			JsonNode variable;
			variable.String() = VLC->spells()->getById(spell)->getJsonKey();
			variable.setModScope(ModScope::scopeGame()); // list may include spells from all mods
			rewardable->configuration.presetVariable("spell", "gainedSpell", variable);
		}
	}
	else
	{
		logGlobal->warn("Failed to set selected spell to a Shrine!. Object is not rewardable!");
	}
	return object;
}

CGObjectInstance * CMapLoaderH3M::readHeroPlaceholder(const int3 & mapPosition)
{
	auto * object = new CGHeroPlaceholder(map->cb);

	setOwnerAndValidate(mapPosition, object, reader->readPlayer());

	HeroTypeID htid = reader->readHero(); //hero type id

	if(htid.getNum() == -1)
	{
		object->powerRank = reader->readUInt8();
		logGlobal->debug("Map '%s': Hero placeholder: by power at %s, owned by %s", mapName, mapPosition.toString(), object->getOwner().toString());
	}
	else
	{
		object->heroType = htid;
		logGlobal->debug("Map '%s': Hero placeholder: %s at %s, owned by %s", mapName, VLC->heroh->getById(htid)->getJsonKey(), mapPosition.toString(), object->getOwner().toString());
	}

	return object;
}

CGObjectInstance * CMapLoaderH3M::readGrail(const int3 & mapPosition, std::shared_ptr<const ObjectTemplate> objectTemplate)
{
	if (objectTemplate->subid < 1000)
	{
		map->grailPos = mapPosition;
		map->grailRadius = reader->readInt32();
	}
	else
	{
		// Battle location for arena mode in HotA
		logGlobal->warn("Map '%s': Arena mode is not supported!", mapName);
	}
	return nullptr;
}

CGObjectInstance * CMapLoaderH3M::readGeneric(const int3 & mapPosition, std::shared_ptr<const ObjectTemplate> objectTemplate)
{
	if(VLC->objtypeh->knownSubObjects(objectTemplate->id).count(objectTemplate->subid))
		return VLC->objtypeh->getHandlerFor(objectTemplate->id, objectTemplate->subid)->create(map->cb, objectTemplate);

	logGlobal->warn("Map '%s': Unrecognized object %d:%d ('%s') at %s found!", mapName, objectTemplate->id.toEnum(), objectTemplate->subid, objectTemplate->animationFile.getOriginalName(), mapPosition.toString());
	return new CGObjectInstance(map->cb);
}

CGObjectInstance * CMapLoaderH3M::readPyramid(const int3 & mapPosition, std::shared_ptr<const ObjectTemplate> objectTemplate)
{
	if(objectTemplate->subid == 0)
		return new CBank(map->cb);

	return new CGObjectInstance(map->cb);
}

CGObjectInstance * CMapLoaderH3M::readQuestGuard(const int3 & mapPosition)
{
	auto * guard = new CGQuestGuard(map->cb);
	readQuest(guard, mapPosition);
	return guard;
}

CGObjectInstance * CMapLoaderH3M::readShipyard(const int3 & mapPosition, std::shared_ptr<const ObjectTemplate> objectTemplate)
{
	auto * object = readGeneric(mapPosition, objectTemplate);
	setOwnerAndValidate(mapPosition, object, reader->readPlayer32());
	return object;
}

CGObjectInstance * CMapLoaderH3M::readLighthouse(const int3 & mapPosition)
{
	auto * object = new CGLighthouse(map->cb);
	setOwnerAndValidate(mapPosition, object, reader->readPlayer32());
	return object;
}

CGObjectInstance * CMapLoaderH3M::readBank(const int3 & mapPosition, std::shared_ptr<const ObjectTemplate> objectTemplate)
{
	if(features.levelHOTA3)
	{
		//TODO: HotA
		// index of guards preset. -1 = random, 0-4 = index of possible guards settings
		int32_t guardsPresetIndex = reader->readInt32();

		// presence of upgraded stack: -1 = random, 0 = never, 1 = always
		int8_t upgradedStackPresence = reader->readInt8Checked(-1, 1);

		assert(vstd::iswithin(guardsPresetIndex, -1, 4));
		assert(vstd::iswithin(upgradedStackPresence, -1, 1));

		// list of possible artifacts in reward
		// - if list is empty, artifacts are either not present in reward or random
		// - if non-empty, then list always have same number of elements as number of artifacts in bank
		// - ArtifactID::NONE indictates random artifact, other values indicate artifact that should be used as reward
		std::vector<ArtifactID> artifacts;
		int artNumber = reader->readUInt32();
		for(int yy = 0; yy < artNumber; ++yy)
		{
			artifacts.push_back(reader->readArtifact32());
		}

		if(guardsPresetIndex != -1 || upgradedStackPresence != -1 || !artifacts.empty())
			logGlobal->warn(
				"Map '%s: creature bank at %s settings %d %d %d are not implemented!",
				mapName,
				mapPosition.toString(),
				guardsPresetIndex,
				int(upgradedStackPresence),
				artifacts.size()
			);
	}

	return readGeneric(mapPosition, objectTemplate);
}

CGObjectInstance * CMapLoaderH3M::readObject(std::shared_ptr<const ObjectTemplate> objectTemplate, const int3 & mapPosition, const ObjectInstanceID & objectInstanceID)
{
	switch(objectTemplate->id.toEnum())
	{
		case Obj::EVENT:
			return readEvent(mapPosition, objectInstanceID);

		case Obj::HERO:
		case Obj::RANDOM_HERO:
		case Obj::PRISON:
			return readHero(mapPosition, objectInstanceID);

		case Obj::MONSTER:
		case Obj::RANDOM_MONSTER:
		case Obj::RANDOM_MONSTER_L1:
		case Obj::RANDOM_MONSTER_L2:
		case Obj::RANDOM_MONSTER_L3:
		case Obj::RANDOM_MONSTER_L4:
		case Obj::RANDOM_MONSTER_L5:
		case Obj::RANDOM_MONSTER_L6:
		case Obj::RANDOM_MONSTER_L7:
			return readMonster(mapPosition, objectInstanceID);

		case Obj::OCEAN_BOTTLE:
		case Obj::SIGN:
			return readSign(mapPosition);

		case Obj::SEER_HUT:
			return readSeerHut(mapPosition, objectInstanceID);

		case Obj::WITCH_HUT:
			return readWitchHut(mapPosition, objectTemplate);
		case Obj::SCHOLAR:
			return readScholar(mapPosition, objectTemplate);

		case Obj::GARRISON:
		case Obj::GARRISON2:
			return readGarrison(mapPosition);

		case Obj::ARTIFACT:
		case Obj::RANDOM_ART:
		case Obj::RANDOM_TREASURE_ART:
		case Obj::RANDOM_MINOR_ART:
		case Obj::RANDOM_MAJOR_ART:
		case Obj::RANDOM_RELIC_ART:
		case Obj::SPELL_SCROLL:
			return readArtifact(mapPosition, objectTemplate);

		case Obj::RANDOM_RESOURCE:
		case Obj::RESOURCE:
			return readResource(mapPosition, objectTemplate);
		case Obj::RANDOM_TOWN:
		case Obj::TOWN:
			return readTown(mapPosition, objectTemplate);

		case Obj::MINE:
		case Obj::ABANDONED_MINE:
			return readMine(mapPosition, objectTemplate);

		case Obj::CREATURE_GENERATOR1:
		case Obj::CREATURE_GENERATOR2:
		case Obj::CREATURE_GENERATOR3:
		case Obj::CREATURE_GENERATOR4:
			return readDwelling(mapPosition);

		case Obj::SHRINE_OF_MAGIC_INCANTATION:
		case Obj::SHRINE_OF_MAGIC_GESTURE:
		case Obj::SHRINE_OF_MAGIC_THOUGHT:
			return readShrine(mapPosition, objectTemplate);

		case Obj::PANDORAS_BOX:
			return readPandora(mapPosition, objectInstanceID);

		case Obj::GRAIL:
			return readGrail(mapPosition, objectTemplate);

		case Obj::RANDOM_DWELLING:
		case Obj::RANDOM_DWELLING_LVL:
		case Obj::RANDOM_DWELLING_FACTION:
			return readDwellingRandom(mapPosition, objectTemplate);

		case Obj::QUEST_GUARD:
			return readQuestGuard(mapPosition);

		case Obj::SHIPYARD:
			return readShipyard(mapPosition, objectTemplate);

		case Obj::HERO_PLACEHOLDER:
			return readHeroPlaceholder(mapPosition);

		case Obj::PYRAMID:
			return readPyramid(mapPosition, objectTemplate);

		case Obj::LIGHTHOUSE:
			return readLighthouse(mapPosition);

		case Obj::CREATURE_BANK:
		case Obj::DERELICT_SHIP:
		case Obj::DRAGON_UTOPIA:
		case Obj::CRYPT:
		case Obj::SHIPWRECK:
			return readBank(mapPosition, objectTemplate);

		default: //any other object
			return readGeneric(mapPosition, objectTemplate);
	}
}

void CMapLoaderH3M::readObjects()
{
	uint32_t objectsCount = reader->readUInt32();

	for(uint32_t i = 0; i < objectsCount; ++i)
	{
		int3 mapPosition = reader->readInt3();

		uint32_t defIndex = reader->readUInt32();
		ObjectInstanceID objectInstanceID = ObjectInstanceID(static_cast<si32>(map->objects.size()));

		std::shared_ptr<const ObjectTemplate> objectTemplate = templates.at(defIndex);
		reader->skipZero(5);

		CGObjectInstance * newObject = readObject(objectTemplate, mapPosition, objectInstanceID);

		if(!newObject)
			continue;

		newObject->pos = mapPosition;
		newObject->ID = objectTemplate->id;
		newObject->id = objectInstanceID;
		if(newObject->ID != Obj::HERO && newObject->ID != Obj::HERO_PLACEHOLDER && newObject->ID != Obj::PRISON)
		{
			newObject->subID = objectTemplate->subid;
		}
		newObject->appearance = objectTemplate;
		assert(objectInstanceID == ObjectInstanceID((si32)map->objects.size()));

		if (newObject->isVisitable() && !map->isInTheMap(newObject->visitablePos()))
			logGlobal->error("Map '%s': Object at %s - outside of map borders!", mapName, mapPosition.toString());

		{
			//TODO: define valid typeName and subtypeName for H3M maps
			//boost::format fmt("%s_%d");
			//fmt % nobj->typeName % nobj->id.getNum();
			boost::format fmt("obj_%d");
			fmt % newObject->id.getNum();
			newObject->instanceName = fmt.str();
		}
		map->addNewObject(newObject);
	}

	std::sort(
		map->heroesOnMap.begin(),
		map->heroesOnMap.end(),
		[](const ConstTransitivePtr<CGHeroInstance> & a, const ConstTransitivePtr<CGHeroInstance> & b)
		{
			return a->subID < b->subID;
		}
	);
}

void CMapLoaderH3M::readCreatureSet(CCreatureSet * out, int number)
{
	for(int index = 0; index < number; ++index)
	{
		CreatureID creatureID = reader->readCreature();
		int count = reader->readUInt16();

		// Empty slot
		if(creatureID == CreatureID::NONE)
			continue;

		auto * result = new CStackInstance();
		result->count = count;

		if(creatureID < CreatureID::NONE)
		{
			int value = -creatureID.getNum() - 2;
			assert(value >= 0 && value < 14);
			uint8_t level = value / 2;
			uint8_t upgrade = value % 2;

			//this will happen when random object has random army
			result->randomStack = CStackInstance::RandomStackInfo{level, upgrade};
		}
		else
		{
			result->setType(creatureID);
		}

		out->putStack(SlotID(index), result);
	}

	out->validTypes(true);
}

void CMapLoaderH3M::setOwnerAndValidate(const int3 & mapPosition, CGObjectInstance * object, const PlayerColor & owner)
{
	assert(owner.isValidPlayer() || owner == PlayerColor::NEUTRAL);

	if(owner == PlayerColor::NEUTRAL)
	{
		object->setOwner(PlayerColor::NEUTRAL);
		return;
	}

	if(!owner.isValidPlayer())
	{
		object->setOwner(PlayerColor::NEUTRAL);
		logGlobal->warn("Map '%s': Object at %s - owned by invalid player %d! Will be set to neutral!", mapName, mapPosition.toString(), int(owner.getNum()));
		return;
	}

	if(!mapHeader->players[owner.getNum()].canAnyonePlay())
	{
		object->setOwner(PlayerColor::NEUTRAL);
		logGlobal->warn("Map '%s': Object at %s - owned by non-existing player %d! Will be set to neutral!", mapName, mapPosition.toString(), int(owner.getNum())
		);
		return;
	}

	object->setOwner(owner);
}

CGObjectInstance * CMapLoaderH3M::readHero(const int3 & mapPosition, const ObjectInstanceID & objectInstanceID)
{
	auto * object = new CGHeroInstance(map->cb);

	if(features.levelAB)
	{
		unsigned int identifier = reader->readUInt32();
		map->questIdentifierToId[identifier] = objectInstanceID;
	}

	PlayerColor owner = reader->readPlayer();
	object->subID = reader->readHero().getNum();

	//If hero of this type has been predefined, use that as a base.
	//Instance data will overwrite the predefined values where appropriate.
	for(auto & elem : map->predefinedHeroes)
	{
		if(elem->subID == object->subID)
		{
			logGlobal->debug("Hero %d will be taken from the predefined heroes list.", object->subID);
			delete object;
			object = elem;
			break;
		}
	}

	setOwnerAndValidate(mapPosition, object, owner);

	for(auto & elem : map->disposedHeroes)
	{
		if(elem.heroId == object->getHeroType())
		{
			object->nameCustomTextId = elem.name;
			object->customPortraitSource = elem.portrait;
			break;
		}
	}

	bool hasName = reader->readBool();
	if(hasName)
		object->nameCustomTextId = readLocalizedString(TextIdentifier("heroes", object->getHeroType().getNum(), "name"));

	if(features.levelSOD)
	{
		bool hasCustomExperience = reader->readBool();
		if(hasCustomExperience)
			object->exp = reader->readUInt32();
	}
	else
	{
		object->exp = reader->readUInt32();

		//0 means "not set" in <=AB maps
		if(!object->exp)
			object->exp = CGHeroInstance::UNINITIALIZED_EXPERIENCE;
	}

	bool hasPortrait = reader->readBool();
	if(hasPortrait)
		object->customPortraitSource = reader->readHeroPortrait();

	bool hasSecSkills = reader->readBool();
	if(hasSecSkills)
	{
		if(!object->secSkills.empty())
		{
			if(object->secSkills[0].first != SecondarySkill::NONE)
				logGlobal->debug("Map '%s': Hero %s subID=%d has set secondary skills twice (in map properties and on adventure map instance). Using the latter set...", mapName, object->getNameTextID(), object->subID);
			object->secSkills.clear();
		}

		uint32_t skillsCount = reader->readUInt32();
		object->secSkills.resize(skillsCount);
		for(int i = 0; i < skillsCount; ++i)
		{
			object->secSkills[i].first = reader->readSkill();
			object->secSkills[i].second = reader->readInt8Checked(1,3);
		}
	}

	bool hasGarison = reader->readBool();
	if(hasGarison)
		readCreatureSet(object, 7);

	object->formation = static_cast<EArmyFormation>(reader->readInt8Checked(0, 1));
	assert(object->formation == EArmyFormation::LOOSE || object->formation == EArmyFormation::TIGHT);

	loadArtifactsOfHero(object);
	object->patrol.patrolRadius = reader->readUInt8();
	object->patrol.patrolling = (object->patrol.patrolRadius != 0xff);

	if(features.levelAB)
	{
		bool hasCustomBiography = reader->readBool();
		if(hasCustomBiography)
			object->biographyCustomTextId = readLocalizedString(TextIdentifier("heroes", object->subID, "biography"));

		object->gender = static_cast<EHeroGender>(reader->readInt8Checked(-1, 1));
		assert(object->gender == EHeroGender::MALE || object->gender == EHeroGender::FEMALE || object->gender == EHeroGender::DEFAULT);
	}
	else
	{
		object->gender = EHeroGender::DEFAULT;
	}

	// Spells
	if(features.levelSOD)
	{
		bool hasCustomSpells = reader->readBool();
		if(hasCustomSpells)
		{
			if(!object->spells.empty())
			{
				object->spells.clear();
				logGlobal->debug("Hero %s subID=%d has spells set twice (in map properties and on adventure map instance). Using the latter set...", object->getNameTextID(), object->subID);
			}

			reader->readBitmaskSpells(object->spells, false);
			object->spells.insert(SpellID::PRESET); //placeholder "preset spells"
		}
	}
	else if(features.levelAB)
	{
		//we can read one spell
		SpellID spell = reader->readSpell();

		// workaround: VCMI uses 'PRESET' spell to indicate that spellbook has been preconfigured on map
		// but H3 uses 'PRESET' spell (-2) to indicate that game should give standard spell to hero
		if(spell == SpellID::NONE)
			object->spells.insert(SpellID::PRESET); //spellbook is preconfigured to be empty

		if (spell.hasValue())
			object->spells.insert(spell);
	}

	if(features.levelSOD)
	{
		bool hasCustomPrimSkills = reader->readBool();
		if(hasCustomPrimSkills)
		{
			auto ps = object->getAllBonuses(Selector::type()(BonusType::PRIMARY_SKILL).And(Selector::sourceType()(BonusSource::HERO_BASE_SKILL)), nullptr);
			if(ps->size())
			{
				logGlobal->debug("Hero %s has set primary skills twice (in map properties and on adventure map instance). Using the latter set...", object->getHeroType().getNum() );
				for(const auto & b : *ps)
					object->removeBonus(b);
			}

			for(int xx = 0; xx < GameConstants::PRIMARY_SKILLS; ++xx)
			{
				object->pushPrimSkill(static_cast<PrimarySkill>(xx), reader->readUInt8());
			}
		}
	}

	if (object->subID != MapObjectSubID())
		logGlobal->debug("Map '%s': Hero on map: %s at %s, owned by %s", mapName, VLC->heroh->getById(object->getHeroType())->getJsonKey(), mapPosition.toString(), object->getOwner().toString());
	else
		logGlobal->debug("Map '%s': Hero on map: (random) at %s, owned by %s", mapName, mapPosition.toString(), object->getOwner().toString());

	reader->skipZero(16);
	return object;
}

CGObjectInstance * CMapLoaderH3M::readSeerHut(const int3 & position, const ObjectInstanceID & idToBeGiven)
{
	auto * hut = new CGSeerHut(map->cb);

	uint32_t questsCount = 1;

	if(features.levelHOTA3)
		questsCount = reader->readUInt32();

	//TODO: HotA
	if(questsCount > 1)
		logGlobal->warn("Map '%s': Seer Hut at %s - %d quests are not implemented!", mapName, position.toString(), questsCount);

	for(size_t i = 0; i < questsCount; ++i)
		readSeerHutQuest(hut, position, idToBeGiven);

	if(features.levelHOTA3)
	{
		uint32_t repeateableQuestsCount = reader->readUInt32();
		hut->quest->repeatedQuest = repeateableQuestsCount != 0;

		if(repeateableQuestsCount != 0)
			logGlobal->warn("Map '%s': Seer Hut at %s - %d repeatable quests are not implemented!", mapName, position.toString(), repeateableQuestsCount);

		for(size_t i = 0; i < repeateableQuestsCount; ++i)
			readSeerHutQuest(hut, position, idToBeGiven);
	}

	reader->skipZero(2);

	return hut;
}

enum class ESeerHutRewardType : uint8_t
{
	NOTHING = 0,
	EXPERIENCE = 1,
	MANA_POINTS = 2,
	MORALE = 3,
	LUCK = 4,
	RESOURCES = 5,
	PRIMARY_SKILL = 6,
	SECONDARY_SKILL = 7,
	ARTIFACT = 8,
	SPELL = 9,
	CREATURE = 10,
};

void CMapLoaderH3M::readSeerHutQuest(CGSeerHut * hut, const int3 & position, const ObjectInstanceID & idToBeGiven)
{
	EQuestMission missionType = EQuestMission::NONE;
	if(features.levelAB)
	{
		missionType = readQuest(hut, position);
	}
	else
	{
		//RoE
		auto artID = reader->readArtifact();
		if(artID != ArtifactID::NONE)
		{
			//not none quest
			hut->quest->mission.artifacts.push_back(artID);
			missionType = EQuestMission::ARTIFACT;
		}
		hut->quest->lastDay = -1; //no timeout
		hut->quest->isCustomFirst = false;
		hut->quest->isCustomNext = false;
		hut->quest->isCustomComplete = false;
	}

	if(missionType != EQuestMission::NONE)
	{
		auto rewardType = static_cast<ESeerHutRewardType>(reader->readInt8Checked(0, 10));
		Rewardable::VisitInfo vinfo;
		auto & reward = vinfo.reward;
		switch(rewardType)
		{
			case ESeerHutRewardType::NOTHING:
			{
				// no-op
				break;
			}
			case ESeerHutRewardType::EXPERIENCE:
			{
				reward.heroExperience = reader->readUInt32();
				break;
			}
			case ESeerHutRewardType::MANA_POINTS:
			{
				reward.manaDiff = reader->readUInt32();
				break;
			}
			case ESeerHutRewardType::MORALE:
			{
				reward.bonuses.emplace_back(BonusDuration::ONE_BATTLE, BonusType::MORALE, BonusSource::OBJECT_INSTANCE, reader->readInt8Checked(-3, 3), BonusSourceID(idToBeGiven));
				break;
			}
			case ESeerHutRewardType::LUCK:
			{
				reward.bonuses.emplace_back(BonusDuration::ONE_BATTLE, BonusType::LUCK, BonusSource::OBJECT_INSTANCE, reader->readInt8Checked(-3, 3), BonusSourceID(idToBeGiven));
				break;
			}
			case ESeerHutRewardType::RESOURCES:
			{
				auto rId = reader->readGameResID();
				auto rVal = reader->readUInt32();

				reward.resources[rId] = rVal;
				break;
			}
			case ESeerHutRewardType::PRIMARY_SKILL:
			{
				auto rId = reader->readPrimary();
				auto rVal = reader->readUInt8();

				reward.primary.at(rId.getNum()) = rVal;
				break;
			}
			case ESeerHutRewardType::SECONDARY_SKILL:
			{
				auto rId = reader->readSkill();
				auto rVal = reader->readInt8Checked(1,3);

				reward.secondary[rId] = rVal;
				break;
			}
			case ESeerHutRewardType::ARTIFACT:
			{
				reward.artifacts.push_back(reader->readArtifact());
				break;
			}
			case ESeerHutRewardType::SPELL:
			{
				reward.spells.push_back(reader->readSpell());
				break;
			}
			case ESeerHutRewardType::CREATURE:
			{
				auto rId = reader->readCreature();
				auto rVal = reader->readUInt16();

				reward.creatures.emplace_back(rId, rVal);
				break;
			}
			default:
			{
				assert(0);
			}
		}

		vinfo.visitType = Rewardable::EEventType::EVENT_FIRST_VISIT;
		hut->configuration.info.push_back(vinfo);
	}
	else
	{
		// missionType==255
		reader->skipZero(1);
	}
}

EQuestMission CMapLoaderH3M::readQuest(IQuestObject * guard, const int3 & position)
{
	auto missionId = static_cast<EQuestMission>(reader->readInt8Checked(0, 10));

	switch(missionId)
	{
		case EQuestMission::NONE:
			return missionId;
		case EQuestMission::PRIMARY_SKILL:
		{
			for(int x = 0; x < 4; ++x)
			{
				guard->quest->mission.primary[x] = reader->readUInt8();
			}
			break;
		}
		case EQuestMission::LEVEL:
		{
			guard->quest->mission.heroLevel = reader->readUInt32();
			break;
		}
		case EQuestMission::KILL_HERO:
		case EQuestMission::KILL_CREATURE:
		{
			guard->quest->killTarget = ObjectInstanceID(reader->readUInt32());
			break;
		}
		case EQuestMission::ARTIFACT:
		{
			size_t artNumber = reader->readUInt8();
			for(size_t yy = 0; yy < artNumber; ++yy)
			{
				auto artid = reader->readArtifact();
				guard->quest->mission.artifacts.push_back(artid);
				map->allowedArtifact.erase(artid); //these are unavailable for random generation
			}
			break;
		}
		case EQuestMission::ARMY:
		{
			size_t typeNumber = reader->readUInt8();
			guard->quest->mission.creatures.resize(typeNumber);
			for(size_t hh = 0; hh < typeNumber; ++hh)
			{
				guard->quest->mission.creatures[hh].type = reader->readCreature().toCreature();
				guard->quest->mission.creatures[hh].count = reader->readUInt16();
			}
			break;
		}
		case EQuestMission::RESOURCES:
		{
			for(int x = 0; x < 7; ++x)
				guard->quest->mission.resources[x] = reader->readUInt32();

			break;
		}
		case EQuestMission::HERO:
		{
			guard->quest->mission.heroes.push_back(reader->readHero());
			break;
		}
		case EQuestMission::PLAYER:
		{
			guard->quest->mission.players.push_back(reader->readPlayer());
			break;
		}
		case EQuestMission::HOTA_MULTI:
		{
			uint32_t missionSubID = reader->readUInt32();

			if(missionSubID == 0)
			{
				missionId = EQuestMission::HOTA_HERO_CLASS;
				std::set<HeroClassID> heroClasses;
				reader->readBitmaskHeroClassesSized(heroClasses, false);
				for(auto & hc : heroClasses)
					guard->quest->mission.heroClasses.push_back(hc);
				break;
			}
			if(missionSubID == 1)
			{
				missionId = EQuestMission::HOTA_REACH_DATE;
				guard->quest->mission.daysPassed = reader->readUInt32() + 1;
				break;
			}
			break;
		}
		default:
		{
			assert(0);
		}
	}

	guard->quest->lastDay = reader->readInt32();
	guard->quest->firstVisitText.appendTextID(readLocalizedString(TextIdentifier("quest", position.x, position.y, position.z, "firstVisit")));
	guard->quest->nextVisitText.appendTextID(readLocalizedString(TextIdentifier("quest", position.x, position.y, position.z, "nextVisit")));
	guard->quest->completedText.appendTextID(readLocalizedString(TextIdentifier("quest", position.x, position.y, position.z, "completed")));
	guard->quest->isCustomFirst = !guard->quest->firstVisitText.empty();
	guard->quest->isCustomNext = !guard->quest->nextVisitText.empty();
	guard->quest->isCustomComplete = !guard->quest->completedText.empty();
	return missionId;
}

CGObjectInstance * CMapLoaderH3M::readTown(const int3 & position, std::shared_ptr<const ObjectTemplate> objectTemplate)
{
	auto * object = new CGTownInstance(map->cb);
	if(features.levelAB)
		object->identifier = reader->readUInt32();

	setOwnerAndValidate(position, object, reader->readPlayer());

	std::optional<FactionID> faction;
	if (objectTemplate->id == Obj::TOWN)
		faction = FactionID(objectTemplate->subid);

	bool hasName = reader->readBool();
	if(hasName)
		object->setNameTextId(readLocalizedString(TextIdentifier("town", position.x, position.y, position.z, "name")));

	bool hasGarrison = reader->readBool();
	if(hasGarrison)
		readCreatureSet(object, 7);

	object->formation = static_cast<EArmyFormation>(reader->readInt8Checked(0, 1));
	assert(object->formation == EArmyFormation::LOOSE || object->formation == EArmyFormation::TIGHT);

	bool hasCustomBuildings = reader->readBool();
	if(hasCustomBuildings)
	{
		reader->readBitmaskBuildings(object->builtBuildings, faction);
		reader->readBitmaskBuildings(object->forbiddenBuildings, faction);
	}
	// Standard buildings
	else
	{
		bool hasFort = reader->readBool();
		if(hasFort)
			object->builtBuildings.insert(BuildingID::FORT);

		//means that set of standard building should be included
		object->builtBuildings.insert(BuildingID::DEFAULT);
	}

	if(features.levelAB)
	{
		std::set<SpellID> spellsMask;

		reader->readBitmaskSpells(spellsMask, false);
		std::copy(spellsMask.begin(), spellsMask.end(), std::back_inserter(object->obligatorySpells));
	}

	{
		std::set<SpellID> spellsMask = VLC->spellh->getDefaultAllowed(); // by default - include spells from mods

		reader->readBitmaskSpells(spellsMask, true);
		std::copy(spellsMask.begin(), spellsMask.end(), std::back_inserter(object->possibleSpells));
	}

	if(features.levelHOTA1)
	{
		// TODO: HOTA support
		[[maybe_unused]] bool spellResearchAvailable = reader->readBool();
	}

	// Read castle events
	uint32_t eventsCount = reader->readUInt32();

	for(int eventID = 0; eventID < eventsCount; ++eventID)
	{
		CCastleEvent event;
		event.name = readBasicString();
		event.message.appendTextID(readLocalizedString(TextIdentifier("town", position.x, position.y, position.z, "event", eventID, "description")));

		reader->readResources(event.resources);

		reader->readBitmaskPlayers(event.players, false);
		if(features.levelSOD)
			event.humanAffected = reader->readBool();
		else
			event.humanAffected = true;

		event.computerAffected = reader->readBool();
		event.firstOccurrence = reader->readUInt16();
		event.nextOccurrence = reader->readUInt8();

		reader->skipZero(17);

		// New buildings
		reader->readBitmaskBuildings(event.buildings, faction);

		event.creatures.resize(7);
		for(int i = 0; i < 7; ++i)
			event.creatures[i] = reader->readUInt16();

		reader->skipZero(4);
		object->events.push_back(event);
	}

	if(features.levelSOD)
	{
		object->alignmentToPlayer = PlayerColor::NEUTRAL; // "same as owner or random"

		 uint8_t alignment = reader->readUInt8();

		if(alignment != 255)
		{
			if(alignment < PlayerColor::PLAYER_LIMIT.getNum())
			{
				if (mapHeader->players[alignment].canAnyonePlay())
					object->alignmentToPlayer = PlayerColor(alignment);
				else
					logGlobal->warn("%s - Alignment of town at %s is invalid! Player %d is not present on map!", mapName, position.toString(), int(alignment));
			}
			else
			{
				// TODO: HOTA support
				uint8_t invertedAlignment = alignment - PlayerColor::PLAYER_LIMIT.getNum();

				if(invertedAlignment < PlayerColor::PLAYER_LIMIT.getNum())
				{
					logGlobal->warn("%s - Alignment of town at %s 'not as player %d' is not implemented!", mapName, position.toString(), alignment - PlayerColor::PLAYER_LIMIT.getNum());
				}
				else
				{
					logGlobal->warn("%s - Alignment of town at %s is corrupted!!", mapName, position.toString());
				}
			}
		}
	}
	reader->skipZero(3);

	return object;
}

void CMapLoaderH3M::readEvents()
{
	uint32_t eventsCount = reader->readUInt32();
	for(int eventID = 0; eventID < eventsCount; ++eventID)
	{
		CMapEvent event;
		event.name = readBasicString();
		event.message.appendTextID(readLocalizedString(TextIdentifier("event", eventID, "description")));

		reader->readResources(event.resources);
		reader->readBitmaskPlayers(event.players, false);
		if(features.levelSOD)
		{
			event.humanAffected = reader->readBool();
		}
		else
		{
			event.humanAffected = true;
		}
		event.computerAffected = reader->readBool();
		event.firstOccurrence = reader->readUInt16();
		event.nextOccurrence = reader->readUInt8();

		reader->skipZero(17);

		map->events.push_back(event);
	}
}

void CMapLoaderH3M::readMessageAndGuards(MetaString & message, CCreatureSet * guards, const int3 & position)
{
	bool hasMessage = reader->readBool();
	if(hasMessage)
	{
		message.appendTextID(readLocalizedString(TextIdentifier("guards", position.x, position.y, position.z, "message")));
		bool hasGuards = reader->readBool();
		if(hasGuards)
			readCreatureSet(guards, 7);

		reader->skipZero(4);
	}
}

std::string CMapLoaderH3M::readBasicString()
{
	return TextOperations::toUnicode(reader->readBaseString(), fileEncoding);
}

std::string CMapLoaderH3M::readLocalizedString(const TextIdentifier & stringIdentifier)
{
	std::string mapString = TextOperations::toUnicode(reader->readBaseString(), fileEncoding);
	TextIdentifier fullIdentifier("map", mapName, stringIdentifier.get());

	if(mapString.empty())
		return "";

	return mapRegisterLocalizedString(modName, *mapHeader, fullIdentifier, mapString);
}

void CMapLoaderH3M::afterRead()
{
	//convert main town positions for all players to actual object position, in H3M it is position of active tile

	for(auto & p : map->players)
	{
		int3 posOfMainTown = p.posOfMainTown;
		if(posOfMainTown.valid() && map->isInTheMap(posOfMainTown))
		{
			const TerrainTile & t = map->getTile(posOfMainTown);

			const CGObjectInstance * mainTown = nullptr;

			for(auto * obj : t.visitableObjects)
			{
				if(obj->ID == Obj::TOWN || obj->ID == Obj::RANDOM_TOWN)
				{
					mainTown = obj;
					break;
				}
			}

			if(mainTown == nullptr)
				continue;

			p.posOfMainTown = posOfMainTown + mainTown->getVisitableOffset();
		}
	}

	map->resolveQuestIdentifiers();
}

VCMI_LIB_NAMESPACE_END