Fixed all the issues with Quests, #828 and #1223.

Upgrade cost will never be negative.

client/GUIClasses.cpp

@@ -993,7 +993,17 @@ std::string CComponent::getSubtitleInternal()
 	case resource:   return boost::lexical_cast<std::string>(val);
 	case creature:   return (val? boost::lexical_cast<std::string>(val) + " " : "") + CGI->creh->creatures[subtype]->*(val != 1 ? &CCreature::namePl : &CCreature::nameSing);
 	case artifact:   return CGI->arth->artifacts[subtype]->Name();
-	case experience: return (subtype && val==1) ? CGI->generaltexth->allTexts[442] : boost::lexical_cast<std::string>(val);
+	case experience:
+		{
+			if (subtype == 1) //+1 level - tree of knowledge
+			{
+				std::string level = CGI->generaltexth->allTexts[442];
+				boost::replace_first(level, "1", boost::lexical_cast<std::string>(val));
+				return level;
+			}
+			else
+				return boost::lexical_cast<std::string>(val); //amount of experience OR level required for seer hut;
+		}
 	case spell:      return CGI->spellh->spells[subtype]->name;
 	case morale:     return "";
 	case luck:       return "";

lib/CGameState.cpp

@@ -1728,6 +1728,9 @@ UpgradeInfo CGameState::getUpgradeInfo(const CStackInstance &stack)
 	if(ret.newID.size())
 		ret.oldID = base->idNumber;
 
+	for (Res::ResourceSet &cost : ret.cost)
+		cost.positive(); //upgrade cost can't be negative, ignore missing resources
+
 	return ret;
 }
 

lib/CGeneralTextHandler.cpp

@@ -241,10 +241,10 @@ CGeneralTextHandler::CGeneralTextHandler()
 
 		//skip header
 		parser.endLine();
-		parser.endLine();
 
 		for (int i = 0; i < 6; ++i)
 			seerEmpty.push_back(parser.readString());
+		parser.endLine();
 
 		quests.resize(10);
 		for (int i = 0; i < 9; ++i) //9 types of quests

lib/CObjectHandler.cpp

@@ -4390,17 +4390,17 @@ void CQuest::getVisitText (MetaString &iwText, std::vector<Component> &component
 	if (firstVisit)
 	{
 		isCustom = isCustomFirst;
-		iwText << firstVisitText;
+		iwText << (text = firstVisitText);
 	}
 	else if (failRequirements)
 	{
 		isCustom = isCustomNext;
-		iwText << nextVisitText;
+		iwText << (text = nextVisitText);
 	}
 	switch (missionType)
 	{
 		case MISSION_LEVEL:
-			components.push_back(Component (Component::EXPERIENCE, 1, m13489val, 0));
+			components.push_back(Component (Component::EXPERIENCE, 0, m13489val, 0));
 			if (!isCustom)
 				iwText.addReplacement(m13489val);
 			break;
@@ -4435,8 +4435,10 @@ void CQuest::getVisitText (MetaString &iwText, std::vector<Component> &component
 			{
 				components.push_back(Component(stackToKill));
 				if (!isCustom)
+				{
 					addReplacements(iwText, text);
 				}
+			}
 			break;
 		case MISSION_ART:
 		{
@@ -4687,7 +4689,10 @@ void CGSeerHut::initObj()
 			quest->completedText = VLC->generaltexth->quests[quest->missionType-1][2][quest->textOption];
 	}
 	else
+	{
+		quest->progress = CQuest::COMPLETE;
 		quest->firstVisitText = VLC->generaltexth->seerEmpty[quest->textOption];
+	}
 
 }
 
@@ -4788,17 +4793,13 @@ void CGSeerHut::setPropertyDer (ui8 what, ui32 val)
 		case 10:
 			quest->progress = static_cast<CQuest::Eprogress>(val);
 			break;
-		case 11:
-			quest->missionType = CQuest::MISSION_NONE;
-			break;
 	}
 }
 void CGSeerHut::newTurn() const
 {
-	if (quest->lastDay >= 0 && quest->lastDay < cb->getDate()) //time is up
+	if (quest->lastDay >= 0 && quest->lastDay < cb->getDate()-1) //time is up
 	{
-		cb->setObjProperty (id, 11, 0);
-		cb->setObjProperty (id, 10, 0);
+		cb->setObjProperty (id, 10, CQuest::COMPLETE);
 	}
 
 }
@@ -4806,7 +4807,7 @@ void CGSeerHut::onHeroVisit( const CGHeroInstance * h ) const
 {
 	InfoWindow iw;
 	iw.player = h->getOwner();
-	if (quest->missionType)
+	if (quest->progress < CQuest::COMPLETE)
 	{
 		bool firstVisit = !quest->progress;
 		bool failRequirements = !checkQuest(h);
@@ -4908,9 +4909,8 @@ void CGSeerHut::finishQuest(const CGHeroInstance * h, ui32 accept) const
 			default:
 				break;
 		}
-		cb->setObjProperty (id, 10, CQuest::COMPLETE); //mission complete - for AI
-		cb->setObjProperty (id, 11, 0); //no more mission available - redundant?
-		completeQuest(h); //make sure to remove QuestQuard at the very end
+		cb->setObjProperty (id, 10, CQuest::COMPLETE); //mission complete
+		completeQuest(h); //make sure to remove QuestGuard at the very end
 	}
 }
 void CGSeerHut::completeQuest (const CGHeroInstance * h) const //reward

lib/NetPacksLib.cpp

@@ -335,10 +335,10 @@ DLL_LINKAGE void RemoveObject::applyGs( CGameState *gs )
 		return;
 	}
 
-	auto quest = dynamic_cast<const CQuest *>(obj);
+	auto quest = dynamic_cast<const IQuestObject *>(obj);
 	if (quest)
 	{
-		gs->map->quests[quest->qid] = nullptr;
+		gs->map->quests[quest->quest->qid] = nullptr;
 		for (auto &player : gs->players)
 		{
 			for (auto &q : player.second.quests)
@@ -349,7 +349,6 @@ DLL_LINKAGE void RemoveObject::applyGs( CGameState *gs )
 				}
 			}
 		}
-		//gs->map->quests[quest->qid].dellNull();
 	}
 
 	gs->map->objects[id.getNum()].dellNull();

lib/ResourceSet.cpp

@@ -40,6 +40,12 @@ void Res::ResourceSet::amax(const TResourceCap &val)
 		::vstd::amax(elem, val);
 }
 
+void Res::ResourceSet::positive()
+{
+	for(auto & elem : *this)
+		::vstd::amax(elem, 0);
+}
+
 bool Res::ResourceSet::canBeAfforded(const ResourceSet &res) const
 {
 	return Res::canAfford(res, *this);

lib/ResourceSet.h

@@ -125,6 +125,7 @@ namespace Res
 		}
 
 		DLL_LINKAGE void amax(const TResourceCap &val); //performs vstd::amax on each element
+		DLL_LINKAGE void positive(); //values below 0 are set to 0 - upgrade cost can't be negative, for example
 		DLL_LINKAGE bool nonZero() const; //returns true if at least one value is non-zero;
 		DLL_LINKAGE bool canAfford(const ResourceSet &price) const;
 		DLL_LINKAGE bool canBeAfforded(const ResourceSet &res) const;