vcmi/client/widgets/CArtifactHolder.cpp

/*
 * CArtifactHolder.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 "CArtifactHolder.h"

#include "../gui/CGuiHandler.h"
#include "../gui/CursorHandler.h"

#include "Buttons.h"
#include "CComponent.h"

#include "../windows/CHeroWindow.h"
#include "../windows/CSpellWindow.h"
#include "../windows/GUIClasses.h"
#include "../renderSDL/SDL_Extensions.h"
#include "../CPlayerInterface.h"
#include "../CGameInfo.h"

#include "../../CCallback.h"

#include "../../lib/CArtHandler.h"
#include "../../lib/CGeneralTextHandler.h"

#include "../../lib/mapObjects/CGHeroInstance.h"

CHeroArtPlace::CHeroArtPlace(Point position, const CArtifactInstance * Art)
	: CArtPlace(position, Art),
	locked(false),
	picked(false),
	marked(false),
	ourOwner(nullptr)
{
	createImage();
}

void CHeroArtPlace::createImage()
{
	OBJECT_CONSTRUCTION_CAPTURING(255-DISPOSE);

	si32 imageIndex = 0;

	if(locked)
		imageIndex = ArtifactID::ART_LOCK;
	else if(ourArt)
		imageIndex = ourArt->artType->getIconIndex();

	image = std::make_shared<CAnimImage>("artifact", imageIndex);
	if(!ourArt)
		image->disable();

	selection = std::make_shared<CAnimImage>("artifact", ArtifactID::ART_SELECTION);
	selection->disable();
}

void CHeroArtPlace::lockSlot(bool on)
{
	if (locked == on)
		return;

	locked = on;

	if (on)
		image->setFrame(ArtifactID::ART_LOCK);
	else if (ourArt)
		image->setFrame(ourArt->artType->getIconIndex());
	else
		image->setFrame(0);
}

void CHeroArtPlace::pickSlot(bool on)
{
	if (picked == on)
		return;

	picked = on;
	if (on)
		image->disable();
	else
		image->enable();
}

void CHeroArtPlace::selectSlot(bool on)
{
	if (marked == on)
		return;

	marked = on;
	if (on)
		selection->enable();
	else
		selection->disable();
}

void CHeroArtPlace::clickLeft(tribool down, bool previousState)
{
	//LRClickableAreaWTextComp::clickLeft(down);
	bool inBackpack = ArtifactUtils::isSlotBackpack(slotID);
	bool srcInBackpack = ArtifactUtils::isSlotBackpack(ourOwner->commonInfo->src.slotID);
	bool srcInSameHero = ourOwner->commonInfo->src.AOH == ourOwner;

	if(ourOwner->highlightModeCallback && ourArt)
	{
		if(down)
		{
			if(!ourArt->artType->isTradable()) //War Machine or Spellbook
			{
				LOCPLINT->showInfoDialog(CGI->generaltexth->allTexts[21]); //This item can't be traded.
			}
			else
			{
				ourOwner->unmarkSlots(false);
				selectSlot(true);
				ourOwner->highlightModeCallback(this);
			}
		}
		return;
	}

	// If clicked on spellbook, open it only if no artifact is held at the moment.
	if(ourArt && !down && previousState && !ourOwner->commonInfo->src.AOH)
	{
		if(ourArt->artType->getId() == ArtifactID::SPELLBOOK)
				GH.pushIntT<CSpellWindow>(ourOwner->curHero, LOCPLINT, LOCPLINT->battleInt.get());
	}

	if (!down && previousState)
	{
		if(ourArt && ourArt->artType->getId() == ArtifactID::SPELLBOOK)
			return; //this is handled separately

		if(!ourOwner->commonInfo->src.AOH) //nothing has been clicked
		{
			if(ourArt  //to prevent selecting empty slots (bugfix to what GrayFace reported)
				&&  ourOwner->curHero->tempOwner == LOCPLINT->playerID)//can't take art from another player
			{
				if(ourArt->artType->getId() == ArtifactID::CATAPULT) //catapult cannot be highlighted
				{
					std::vector<std::shared_ptr<CComponent>> catapult(1, std::make_shared<CComponent>(CComponent::artifact, 3, 0));
					LOCPLINT->showInfoDialog(CGI->generaltexth->allTexts[312], catapult); //The Catapult must be equipped.
					return;
				}
				select();
			}
		}
		// Perform artifact transition
		else if(ourArt != ourOwner->commonInfo->src.art)
		{
			if(inBackpack) // Backpack destination.
			{
				if(!srcInBackpack || slotID != ourOwner->commonInfo->src.slotID + 1)
				{
					const CArtifact * const cur = ourOwner->commonInfo->src.art->artType;

					if(cur->getId() == ArtifactID::CATAPULT)
					{
						//should not happen, catapult cannot be selected
						logGlobal->error("Attempt to move Catapult");
					}
					else if(cur->isBig())
					{
						//war machines cannot go to backpack
						LOCPLINT->showInfoDialog(boost::str(boost::format(CGI->generaltexth->allTexts[153]) % cur->getNameTranslated()));
					}
					else
					{
						setMeAsDest();
						vstd::amin(ourOwner->commonInfo->dst.slotID, ourOwner->curHero->artifactsInBackpack.size() + GameConstants::BACKPACK_START);
						if(ArtifactUtils::isBackpackFreeSlots(ourOwner->curHero))
						{
							if(!srcInSameHero || ourOwner->commonInfo->dst.slotID != ourOwner->commonInfo->src.slotID)
								ourOwner->realizeCurrentTransaction();
						}
						else
						{
							LOCPLINT->showInfoDialog(CGI->generaltexth->translate("core.genrltxt.152"));
						}
					}
				}
			}
			//check if swap is possible
			else if (fitsHere(ourOwner->commonInfo->src.art) &&
				(!ourArt || ourOwner->curHero->tempOwner == LOCPLINT->playerID))
			{
				setMeAsDest();
				ourOwner->realizeCurrentTransaction();
			}
		}
	}
}

bool CHeroArtPlace::askToAssemble(const CGHeroInstance * hero, ArtifactPosition slot)
{
	assert(hero);
	const auto art = hero->getArt(slot);
	assert(art);
	auto assemblyPossibilities = ArtifactUtils::assemblyPossibilities(hero, art->getTypeId(), ArtifactUtils::isSlotEquipment(slot));

	// If the artifact can be assembled, display dialog.
	for(const auto * combination : assemblyPossibilities)
	{
		LOCPLINT->showArtifactAssemblyDialog(
			art->artType,
			combination,
			std::bind(&CCallback::assembleArtifacts, LOCPLINT->cb.get(), hero, slot, true, combination->getId()));

		if(assemblyPossibilities.size() > 2)
			logGlobal->warn("More than one possibility of assembling on %s... taking only first", art->artType->getNameTranslated());
		return true;
	}
	return false;
}

bool CHeroArtPlace::askToDisassemble(const CGHeroInstance * hero, ArtifactPosition slot)
{
	assert(hero);
	const auto art = hero->getArt(slot);
	assert(art);

	if(art->canBeDisassembled())
	{
		if(ArtifactUtils::isSlotBackpack(slot) && !ArtifactUtils::isBackpackFreeSlots(hero, art->artType->constituents->size() - 1))
			return false;
		
		LOCPLINT->showArtifactAssemblyDialog(
			art->artType,
			nullptr,
			std::bind(&CCallback::assembleArtifacts, LOCPLINT->cb.get(), hero, slot, false, ArtifactID()));
		return true;
	}
	return false;
}

void CHeroArtPlace::clickRight(tribool down, bool previousState)
{
	if(ourArt && down && !locked && text.size() && !picked)  //if there is no description or it's a lock, do nothing ;]
	{
		if(ourOwner->allowedAssembling)
		{
			// If the artifact can be assembled, display dialog.
			if(askToAssemble(ourOwner->curHero, slotID))
			{
				return;
			}
			if(askToDisassemble(ourOwner->curHero, slotID))
			{
				return;
			}
		}

		// Lastly just show the artifact description.
		LRClickableAreaWTextComp::clickRight(down, previousState);
	}
}

void CArtifactsOfHero::activate()
{
	if (commonInfo->src.AOH == this && commonInfo->src.art)
		CCS->curh->dragAndDropCursor("artifact", commonInfo->src.art->artType->getIconIndex());

	CIntObject::activate();
}

void CArtifactsOfHero::deactivate()
{
	if (commonInfo->src.AOH == this && commonInfo->src.art)
		CCS->curh->dragAndDropCursor(nullptr);

	CIntObject::deactivate();
}

/**
 * Selects artifact slot so that the containing artifact looks like it's picked up.
 */
void CHeroArtPlace::select()
{
	if(locked)
		return;

	pickSlot(true);
	if(ourArt->canBeDisassembled() && ArtifactUtils::isSlotEquipment(slotID)) //worn combined artifact -> locks have to disappear
	{
		for(auto slot : ArtifactUtils::constituentWornSlots())
		{
			auto ap = ourOwner->getArtPlace(slot);
			if(ap)//getArtPlace may return null
				ap->pickSlot(ourArt->isPart(ap->ourArt));
		}
	}

	ourOwner->commonInfo->src.setTo(this, false);
	ourOwner->commonInfo->src.slotID = ArtifactPosition::TRANSITION_POS;

	LOCPLINT->cb->swapArtifacts(ArtifactLocation(ourOwner->curHero, slotID),
		ArtifactLocation(ourOwner->curHero, ArtifactPosition::TRANSITION_POS));
}

void CHeroArtPlace::showAll(SDL_Surface * to)
{
	if (ourArt && !picked && ourArt == ourOwner->curHero->getArt(slotID, false)) //last condition is needed for disassembling -> artifact may be gone, but we don't know yet TODO: real, nice solution
	{
		CIntObject::showAll(to);
	}

	if(marked && active)
	{
		// Draw vertical bars.
		for (int i = 0; i < pos.h; ++i)
		{
			CSDL_Ext::putPixelWithoutRefresh(to, pos.x,             pos.y + i, 240, 220, 120);
			CSDL_Ext::putPixelWithoutRefresh(to, pos.x + pos.w - 1, pos.y + i, 240, 220, 120);
		}

		// Draw horizontal bars.
		for (int i = 0; i < pos.w; ++i)
		{
			CSDL_Ext::putPixelWithoutRefresh(to, pos.x + i, pos.y,             240, 220, 120);
			CSDL_Ext::putPixelWithoutRefresh(to, pos.x + i, pos.y + pos.h - 1, 240, 220, 120);
		}
	}
}

bool CHeroArtPlace::fitsHere(const CArtifactInstance * art) const
{
	// You can place 'no artifact' anywhere.
	if(!art)
		return true;

	// Anything but War Machines can be placed in backpack.
	if (slotID >= GameConstants::BACKPACK_START)
		return !art->artType->isBig();

	return art->canBePutAt(ArtifactLocation(ourOwner->curHero, slotID), true);
}

void CHeroArtPlace::setMeAsDest(bool backpackAsVoid)
{
	ourOwner->commonInfo->dst.setTo(this, backpackAsVoid);
}

void CHeroArtPlace::setArtifact(const CArtifactInstance *art)
{
	baseType = -1; //by default we don't store any component
	ourArt = art;
	if(!art)
	{
		image->disable();
		text.clear();
		hoverText = CGI->generaltexth->allTexts[507];
		return;
	}

	image->enable();
	image->setFrame(locked ? ArtifactID::ART_LOCK : art->artType->getIconIndex());

	text = art->getDescription();

	// Display info about set
	if(ourOwner && ourOwner->curHero && !art->canBeDisassembled())
	{
		for(const auto combinedArt : art->artType->constituentOf)
		{
			std::string artList;
			text += "\n\n";
			text += "{" + combinedArt->getNameTranslated() + "}";
			int wornArtifacts = 0;
			for(const auto part : *combinedArt->constituents)
			{
				if(art->artType->constituentOf.size() <= 1)
					artList += "\n" + part->getNameTranslated();
				if(ourOwner->curHero->hasArt(part->getId(), true))
					wornArtifacts++;
			}
			text += " (" + boost::str(boost::format("%d") % wornArtifacts) + " / " +
				boost::str(boost::format("%d") % combinedArt->constituents->size()) + ")" + artList;
		}
	}

	if(art->artType->getId() == ArtifactID::SPELL_SCROLL)
	{
		int spellID = art->getScrollSpellID();
		if(spellID >= 0)
		{
			//add spell component info (used to provide a pic in r-click popup)
			baseType = CComponent::spell;
			type = spellID;
			bonusValue = 0;
		}
	}
	else
	{
		baseType = CComponent::artifact;
		type = art->artType->getId();
		bonusValue = 0;
	}

	if (locked) // Locks should appear as empty.
		hoverText = CGI->generaltexth->allTexts[507];
	else
		hoverText = boost::str(boost::format(CGI->generaltexth->heroscrn[1]) % ourArt->artType->getNameTranslated());
}

void CArtifactsOfHero::SCommonPart::reset()
{
	src.clear();
	dst.clear();
	CCS->curh->dragAndDropCursor(nullptr);
}

void CArtifactsOfHero::setHero(const CGHeroInstance * hero)
{
	curHero = hero;
	if (curHero->artifactsInBackpack.size() > 0)
		backpackPos %= curHero->artifactsInBackpack.size();
	else
		backpackPos = 0;

	// Fill the slots for worn artifacts and backpack.

	for(auto p : artWorn)
	{
		setSlotData(p.second, p.first);
	}

	scrollBackpack(0);
}

void CArtifactsOfHero::dispose()
{
	CCS->curh->dragAndDropCursor(nullptr);
}

void CArtifactsOfHero::scrollBackpack(int dir)
{
	int artsInBackpack = static_cast<int>(curHero->artifactsInBackpack.size());
	backpackPos += dir;
	if(backpackPos < 0)// No guarantee of modulus behavior with negative operands -> we keep it positive
		backpackPos += artsInBackpack;

	if(artsInBackpack)
		backpackPos %= artsInBackpack;

	std::multiset<const CArtifactInstance *> toOmit = artifactsOnAltar;
	if(commonInfo->src.art) //if we picked an art from backapck, its slot has to be omitted
		toOmit.insert(commonInfo->src.art);

	int omitedSoFar = 0;

	//set new data
	size_t s = 0;
	for( ; s < artsInBackpack; ++s)
	{

		if (s < artsInBackpack)
		{
			auto slotID = ArtifactPosition(GameConstants::BACKPACK_START + (s + backpackPos)%artsInBackpack);
			const CArtifactInstance *art = curHero->getArt(slotID);
			assert(art);
			if(!vstd::contains(toOmit, art))
			{
				if(s - omitedSoFar < backpack.size())
					setSlotData(backpack[s-omitedSoFar], slotID);
			}
			else
			{
				toOmit -= art;
				omitedSoFar++;
				continue;
			}
		}
	}
	for( ; s - omitedSoFar < backpack.size(); s++)
		eraseSlotData(backpack[s-omitedSoFar], ArtifactPosition(GameConstants::BACKPACK_START + (si32)s));

	//in artifact merchant selling artifacts we may have highlight on one of backpack artifacts -> market needs update, cause artifact under highlight changed
	if(highlightModeCallback)
	{
		for(auto & elem : backpack)
		{
			if(elem->marked)
			{
				highlightModeCallback(elem.get());
				break;
			}
		}
	}

	//blocking scrolling if there is not enough artifacts to scroll
	bool scrollingPossible = artsInBackpack - omitedSoFar > backpack.size();
	leftArtRoll->block(!scrollingPossible);
	rightArtRoll->block(!scrollingPossible);

	safeRedraw();
}

/**
 * Marks possible slots where a given artifact can be placed, except backpack.
 *
 * @param art Artifact checked against.
 */
void CArtifactsOfHero::markPossibleSlots(const CArtifactInstance* art, bool withRedraw)
{
	for(CArtifactsOfHero *aoh : commonInfo->participants)
		for(auto p : aoh->artWorn)
			p.second->selectSlot(art->canBePutAt(ArtifactLocation(aoh->curHero, p.second->slotID), true));

	if(withRedraw)
		safeRedraw();
}

/**
 * Unamarks all slots.
 */
void CArtifactsOfHero::unmarkSlots(bool withRedraw)
{
	if(commonInfo)
		for(CArtifactsOfHero *aoh : commonInfo->participants)
			aoh->unmarkLocalSlots(false);
	else
		unmarkLocalSlots(false);

	if(withRedraw)
		safeRedraw();
}

void CArtifactsOfHero::unmarkLocalSlots(bool withRedraw)
{
	for(auto & p : artWorn)
		p.second->selectSlot(false);

	for(auto & place : backpack)
		place->selectSlot(false);

	if(withRedraw)
		safeRedraw();
}

/**
 * Assigns an artifacts to an artifact place depending on it's new slot ID.
 */
void CArtifactsOfHero::setSlotData(ArtPlacePtr artPlace, ArtifactPosition slotID)
{
	if(!artPlace && slotID >= GameConstants::BACKPACK_START) //spurious call from artifactMoved in attempt to update hidden backpack slot
	{
		return;
	}

	artPlace->pickSlot(false);
	artPlace->slotID = slotID;

	if(const ArtSlotInfo *asi = curHero->getSlot(slotID))
	{
		artPlace->lockSlot(asi->locked);
		artPlace->setArtifact(asi->artifact);
	}
	else
		artPlace->setArtifact(nullptr);
}

/**
 * Makes given artifact slot appear as empty with a certain slot ID.
 */
void CArtifactsOfHero::eraseSlotData(ArtPlacePtr artPlace, ArtifactPosition slotID)
{
	artPlace->pickSlot(false);
	artPlace->slotID = slotID;
	artPlace->setArtifact(nullptr);
}

CArtifactsOfHero::CArtifactsOfHero(ArtPlaceMap ArtWorn, std::vector<ArtPlacePtr> Backpack,
		std::shared_ptr<CButton> leftScroll, std::shared_ptr<CButton> rightScroll, bool createCommonPart)
	: curHero(nullptr),
	artWorn(ArtWorn),
	backpack(Backpack),
	backpackPos(0),
	commonInfo(nullptr),
	leftArtRoll(leftScroll),
	rightArtRoll(rightScroll),
	allowedAssembling(true),
	highlightModeCallback(nullptr)
{
	if(createCommonPart)
	{
		commonInfo = std::make_shared<CArtifactsOfHero::SCommonPart>();
		commonInfo->participants.insert(this);
	}

	// Init slots for worn artifacts.
	for(auto p : artWorn)
	{
		p.second->ourOwner = this;
		eraseSlotData(p.second, p.first);
	}

	// Init slots for the backpack.
	for(size_t s=0; s<backpack.size(); ++s)
	{
		backpack[s]->ourOwner = this;
		eraseSlotData(backpack[s], ArtifactPosition(GameConstants::BACKPACK_START + (si32)s));
	}

	leftArtRoll->addCallback(std::bind(&CArtifactsOfHero::scrollBackpack, this,-1));
	rightArtRoll->addCallback(std::bind(&CArtifactsOfHero::scrollBackpack, this,+1));
}

CArtifactsOfHero::CArtifactsOfHero(const Point & position, bool createCommonPart)
	: curHero(nullptr),
	backpackPos(0),
	commonInfo(nullptr),
	allowedAssembling(true),
	highlightModeCallback(nullptr)
{
	if(createCommonPart)
	{
		commonInfo = std::make_shared<CArtifactsOfHero::SCommonPart>();
		commonInfo->participants.insert(this);
	}

	OBJECT_CONSTRUCTION_CAPTURING(255-DISPOSE);
	pos += position;

	std::vector<Point> slotPos =
	{
		Point(509,30),  Point(567,240), Point(509,80),  //0-2
		Point(383,68),  Point(564,183), Point(509,130), //3-5
		Point(431,68),  Point(610,183), Point(515,295), //6-8
		Point(383,143), Point(399,194), Point(415,245), //9-11
		Point(431,296), Point(564,30),  Point(610,30), //12-14
		Point(610,76),  Point(610,122), Point(610,310), //15-17
		Point(381,296) //18
	};

	// Create slots for worn artifacts.
	for(si32 g = 0; g < GameConstants::BACKPACK_START; g++)
	{
		artWorn[ArtifactPosition(g)] = std::make_shared<CHeroArtPlace>(slotPos[g]);
		artWorn[ArtifactPosition(g)]->ourOwner = this;
		eraseSlotData(artWorn[ArtifactPosition(g)], ArtifactPosition(g));
	}

	// Create slots for the backpack.
	for(int s=0; s<5; ++s)
	{
		auto add = std::make_shared<CHeroArtPlace>(Point(403 + 46 * s, 365));

		add->ourOwner = this;
		eraseSlotData(add, ArtifactPosition(GameConstants::BACKPACK_START + s));

		backpack.push_back(add);
	}

	leftArtRoll = std::make_shared<CButton>(Point(379, 364), "hsbtns3.def", CButton::tooltip(), [&](){ scrollBackpack(-1);}, SDLK_LEFT);
	rightArtRoll = std::make_shared<CButton>(Point(632, 364), "hsbtns5.def", CButton::tooltip(), [&](){ scrollBackpack(+1);}, SDLK_RIGHT);
}

CArtifactsOfHero::~CArtifactsOfHero()
{
	dispose();
	// Artifact located in artifactsTransitionPos should be returned
	if(!curHero->artifactsTransitionPos.empty())
	{
		auto artPlace = getArtPlace(
			ArtifactUtils::getArtAnyPosition(curHero, curHero->artifactsTransitionPos.begin()->artifact->getTypeId()));
		if(artPlace)
		{
			assert(artPlace->ourOwner);
			artPlace->setMeAsDest();
			artPlace->ourOwner->realizeCurrentTransaction();
		}
		else
		{
			LOCPLINT->cb->eraseArtifactByClient(ArtifactLocation(curHero, ArtifactPosition::TRANSITION_POS));
		}
	}
}

void CArtifactsOfHero::updateParentWindow()
{
	if(CHeroWindow * chw = dynamic_cast<CHeroWindow*>(GH.topInt().get()))
	{
		chw->update(curHero, true);
	}
	else if(CExchangeWindow * cew = dynamic_cast<CExchangeWindow*>(GH.topInt().get()))
	{
		cew->updateWidgets();
	}
}

void CArtifactsOfHero::safeRedraw()
{
	if (active)
	{
		if(parent)
			parent->redraw();
		else
			redraw();
	}
}

void CArtifactsOfHero::realizeCurrentTransaction()
{
	assert(commonInfo->src.AOH);
	assert(commonInfo->dst.AOH);
	LOCPLINT->cb->swapArtifacts(ArtifactLocation(commonInfo->src.AOH->curHero, commonInfo->src.slotID),
								ArtifactLocation(commonInfo->dst.AOH->curHero, commonInfo->dst.slotID));
}

void CArtifactsOfHero::artifactMoved(const ArtifactLocation & src, const ArtifactLocation & dst, bool withUIUpdate)
{
	bool isCurHeroSrc = src.isHolder(curHero),
		isCurHeroDst = dst.isHolder(curHero);
	if(isCurHeroSrc && ArtifactUtils::isSlotBackpack(src.slot))
		updateSlot(src.slot);
	if(isCurHeroDst && ArtifactUtils::isSlotBackpack(dst.slot))
		updateSlot(dst.slot);
	// We need to update all slots, artifact might be combined and affect more slots
	if(isCurHeroSrc || isCurHeroDst)
		updateWornSlots(false);

	if(!isCurHeroSrc && !isCurHeroDst)
		return;

	// When moving one artifact onto another it leads to two art movements: dst->TRANSITION_POS; src->dst
	// however after first movement we pick the art from TRANSITION_POS and the second movement coming when
	// we have a different artifact may look surprising... but it's valid.

	// Used when doing dragAndDrop and artifact swap multiple times
	if(src.slot == ArtifactPosition::TRANSITION_POS && 
		commonInfo->src.slotID == ArtifactPosition::TRANSITION_POS &&
		commonInfo->dst.slotID == ArtifactPosition::PRE_FIRST && 
		isCurHeroDst)
	{
		auto art = curHero->getArt(ArtifactPosition::TRANSITION_POS);
		assert(art);
		CCS->curh->dragAndDropCursor("artifact", art->artType->getIconIndex());
		if(withUIUpdate)
			markPossibleSlots(art);

		commonInfo->src.art = art;
		commonInfo->src.slotID = src.slot;
	}
	// Artifact was taken from us
	else if(commonInfo->src == src && dst.slot != ArtifactPosition::TRANSITION_POS)
	{
		// Expected movement from slot ot slot
		assert(commonInfo->dst == dst
			// Artifact moved back to backpack (eg. to make place for art we are moving)
			|| dst.slot == dst.getHolderArtSet()->artifactsInBackpack.size() + GameConstants::BACKPACK_START
			|| dst.getHolderArtSet()->bearerType() != ArtBearer::HERO);
		commonInfo->reset();
		unmarkSlots();
	}
	else
	{
		// The dest artifact was moved after the swap -> we are picking it
		if(commonInfo->dst == src)
		{
			assert(dst.slot == ArtifactPosition::TRANSITION_POS);
			commonInfo->reset();

			for(CArtifactsOfHero * aoh : commonInfo->participants)
			{
				if(dst.isHolder(aoh->curHero))
				{
					commonInfo->src.AOH = aoh;
					break;
				}
			}

			commonInfo->src.art = dst.getArt();
			commonInfo->src.slotID = dst.slot;
			assert(commonInfo->src.AOH);
			CCS->curh->dragAndDropCursor("artifact", dst.getArt()->artType->getIconIndex());
		}
		if(!curHero->artifactsTransitionPos.empty() && withUIUpdate)
		{
			auto artInst = curHero->getArt(ArtifactPosition::TRANSITION_POS);
			markPossibleSlots(artInst);
			CCS->curh->dragAndDropCursor("artifact", artInst->artType->getIconIndex());
		}
	}

	if(withUIUpdate)
	{
		updateParentWindow();
		scrollBackpack(0);
	}
}

void CArtifactsOfHero::artifactRemoved(const ArtifactLocation &al)
{
	if(al.isHolder(curHero))
	{
		if(al.slot < GameConstants::BACKPACK_START)
			updateWornSlots(0);
		else
			scrollBackpack(0); //update backpack slots
	}
}

CArtifactsOfHero::ArtPlacePtr CArtifactsOfHero::getArtPlace(ArtifactPosition slot)
{
	if(ArtifactUtils::isSlotEquipment(slot))
	{
		if(artWorn.find(slot) == artWorn.end())
		{
			logGlobal->error("CArtifactsOfHero::getArtPlace: invalid slot %d", slot);
			return nullptr;
		}

		return artWorn[slot];
	}
	if(ArtifactUtils::isSlotBackpack(slot))
	{
		for(ArtPlacePtr ap : backpack)
			if(ap->slotID == slot)
				return ap;
		return nullptr;
	}
	else
	{
		return nullptr;
	}
}

void CArtifactsOfHero::artifactUpdateSlots(const ArtifactLocation & al)
{
	if(al.isHolder(curHero))
	{
		if(ArtifactUtils::isSlotBackpack(al.slot))
			updateBackpackSlots(true);
		else
			updateWornSlots(true);
	}
}

void CArtifactsOfHero::updateWornSlots(bool redrawParent)
{
	for(auto p : artWorn)
		updateSlot(p.first);

	if(redrawParent)
		updateParentWindow();
}

void CArtifactsOfHero::updateBackpackSlots(bool redrawParent)
{
	for(auto artPlace : backpack)
		updateSlot(artPlace->slotID);
	scrollBackpack(0);

	if(redrawParent)
		updateParentWindow();
}

const CGHeroInstance * CArtifactsOfHero::getHero() const
{
	return curHero;
}

void CArtifactsOfHero::updateSlot(ArtifactPosition slotID)
{
	setSlotData(getArtPlace(slotID), slotID);
}

CArtifactHolder::CArtifactHolder()
{
}

void CWindowWithArtifacts::addSet(std::shared_ptr<CArtifactsOfHero> artSet)
{
	artSets.emplace_back(artSet);
}

std::shared_ptr<CArtifactsOfHero::SCommonPart> CWindowWithArtifacts::getCommonPart()
{
	for(auto artSetWeak : artSets)
	{
		std::shared_ptr<CArtifactsOfHero> realPtr = artSetWeak.lock();
		if(realPtr)
			return realPtr->commonInfo;
	}

	return std::shared_ptr<CArtifactsOfHero::SCommonPart>();
}

void CWindowWithArtifacts::artifactRemoved(const ArtifactLocation &artLoc)
{
	for(auto artSetWeak : artSets)
	{
		std::shared_ptr<CArtifactsOfHero> realPtr = artSetWeak.lock();
		if(realPtr)
			realPtr->artifactRemoved(artLoc);
	}
}

void CWindowWithArtifacts::artifactMoved(const ArtifactLocation &artLoc, const ArtifactLocation &destLoc, bool withRedraw)
{
	CArtifactsOfHero * destaoh = nullptr;

	for(auto artSetWeak : artSets)
	{
		std::shared_ptr<CArtifactsOfHero> realPtr = artSetWeak.lock();
		if(realPtr)
		{
			realPtr->artifactMoved(artLoc, destLoc, withRedraw);
			if(destLoc.isHolder(realPtr->getHero()))
				destaoh = realPtr.get();
		}
	}

	//Make sure the status bar is updated so it does not display old text
	if(destaoh != nullptr && destaoh->getArtPlace(destLoc.slot) != nullptr)
	{
		destaoh->getArtPlace(destLoc.slot)->hover(true);
	}
}

void CWindowWithArtifacts::artifactDisassembled(const ArtifactLocation &artLoc)
{
	for(auto artSetWeak : artSets)
	{
		std::shared_ptr<CArtifactsOfHero> realPtr = artSetWeak.lock();
		if(realPtr)
			realPtr->artifactUpdateSlots(artLoc);
	}
}

void CWindowWithArtifacts::artifactAssembled(const ArtifactLocation &artLoc)
{
	for(auto artSetWeak : artSets)
	{
		std::shared_ptr<CArtifactsOfHero> realPtr = artSetWeak.lock();
		if(realPtr)
			realPtr->artifactUpdateSlots(artLoc);
	}
}

void CArtifactsOfHero::SCommonPart::Artpos::clear()
{
	slotID = ArtifactPosition::PRE_FIRST;
	AOH = nullptr;
	art = nullptr;
}

void CArtifactsOfHero::SCommonPart::Artpos::setTo(const CHeroArtPlace *place, bool dontTakeBackpack)
{
	slotID = place->slotID;
	AOH = place->ourOwner;

	if(ArtifactUtils::isSlotBackpack(slotID) && dontTakeBackpack)
		art = nullptr;
	else
		art = place->ourArt;
}

bool CArtifactsOfHero::SCommonPart::Artpos::operator==(const ArtifactLocation &al) const
{
	if(!AOH)
		return false;
	bool ret = al.isHolder(AOH->curHero)  &&  al.slot == slotID;

	//assert(al.getArt() == art);
	return ret;
}

bool CArtifactsOfHero::SCommonPart::Artpos::valid()
{
	assert(AOH && art);
	return art == AOH->curHero->getArt(slotID);
}

CArtPlace::CArtPlace(Point position, const CArtifactInstance * Art) : ourArt(Art)
{
	image = nullptr;
	pos += position;
	pos.w = pos.h = 44;
}

void CArtPlace::clickLeft(tribool down, bool previousState)
{
	LRClickableAreaWTextComp::clickLeft(down, previousState);
}

void CArtPlace::clickRight(tribool down, bool previousState)
{
	LRClickableAreaWTextComp::clickRight(down, previousState);
}

CCommanderArtPlace::CCommanderArtPlace(Point position, const CGHeroInstance * commanderOwner, ArtifactPosition artSlot, const CArtifactInstance * Art) : CArtPlace(position, Art), commanderOwner(commanderOwner), commanderSlotID(artSlot.num)
{
	createImage();
	setArtifact(Art);
}

void CCommanderArtPlace::clickLeft(tribool down, bool previousState)
{
	if (ourArt && text.size() && down)
		LOCPLINT->showYesNoDialog(CGI->generaltexth->translate("vcmi.commanderWindow.artifactMessage"), [this](){ returnArtToHeroCallback(); }, [](){});
}

void CCommanderArtPlace::clickRight(tribool down, bool previousState)
{
	if (ourArt && text.size() && down)
		CArtPlace::clickRight(down, previousState);
}

void CCommanderArtPlace::createImage()
{
	OBJECT_CONSTRUCTION_CAPTURING(255-DISPOSE);

	int imageIndex = 0;
	if(ourArt)
		imageIndex = ourArt->artType->getIconIndex();

	image = std::make_shared<CAnimImage>("artifact", imageIndex);
	if(!ourArt)
		image->disable();
}

void CCommanderArtPlace::returnArtToHeroCallback()
{
	ArtifactPosition artifactPos = commanderSlotID;
	ArtifactPosition freeSlot = ArtifactUtils::getArtBackpackPosition(commanderOwner, ourArt->getTypeId());
	if(freeSlot == ArtifactPosition::PRE_FIRST)
	{
		LOCPLINT->showInfoDialog(CGI->generaltexth->translate("core.genrltxt.152"));
	}
	else
	{
		ArtifactLocation src(commanderOwner->commander.get(), artifactPos);
		ArtifactLocation dst(commanderOwner, freeSlot);

		if(ourArt->canBePutAt(dst, true))
		{
			LOCPLINT->cb->swapArtifacts(src, dst);
			setArtifact(nullptr);
			parent->redraw();
		}
	}
}

void CCommanderArtPlace::setArtifact(const CArtifactInstance * art)
{
	baseType = -1; //by default we don't store any component
	ourArt = art;
	if (!art)
	{
		image->disable();
		text.clear();
		return;
	}

	image->enable();
	image->setFrame(art->artType->getIconIndex());

	text = art->getDescription();

	if (art->artType->getId() == ArtifactID::SPELL_SCROLL)
	{
		int spellID = art->getScrollSpellID();
		if (spellID >= 0)
		{
			//add spell component info (used to provide a pic in r-click popup)
			baseType = CComponent::spell;
			type = spellID;
			bonusValue = 0;
		}
	}
	else
	{
		baseType = CComponent::artifact;
		type = art->artType->getId();
		bonusValue = 0;
	}
}