suggested changes

lib/CArtHandler.cpp

@@ -1019,7 +1019,7 @@ bool CCombinedArtifactInstance::canBePutAt(const CArtifactSet *artSet, ArtifactP
 	}
 
 	//we iterate over all active slots and check if constituents fits them
-	for(const auto pos : ArtifactUtils::constituentWornSlots)
+	for(const auto pos : ArtifactUtils::constituentWornSlots())
 	{
 		for(auto art = constituentsToBePlaced.begin(); art != constituentsToBePlaced.end(); art++)
 		{
@@ -1372,6 +1372,7 @@ void CArtifactSet::eraseArtSlot(ArtifactPosition slot)
 {
 	if(ArtifactUtils::isSlotBackpack(slot))
 	{
+		assert(artifactsInBackpack.begin() + slot < artifactsInBackpack.end());
 		slot = ArtifactPosition(slot - GameConstants::BACKPACK_START);
 		artifactsInBackpack.erase(artifactsInBackpack.begin() + slot);
 	}
@@ -1544,11 +1545,41 @@ DLL_LINKAGE ArtifactPosition ArtifactUtils::getArtifactDstPosition(	const CArtif
 	return ArtifactPosition(GameConstants::BACKPACK_START);
 }
 
+DLL_LINKAGE const std::vector<ArtifactPosition::EArtifactPosition> & ArtifactUtils::unmovableSlots()
+{
+	return
+	{
+		ArtifactPosition::SPELLBOOK,
+		ArtifactPosition::MACH4
+	};
+}
+
+DLL_LINKAGE const std::vector<ArtifactPosition::EArtifactPosition> & ArtifactUtils::constituentWornSlots()
+{
+	return
+	{
+		ArtifactPosition::HEAD,
+		ArtifactPosition::SHOULDERS,
+		ArtifactPosition::NECK,
+		ArtifactPosition::RIGHT_HAND,
+		ArtifactPosition::LEFT_HAND,
+		ArtifactPosition::TORSO,
+		ArtifactPosition::RIGHT_RING,
+		ArtifactPosition::LEFT_RING,
+		ArtifactPosition::FEET,
+		ArtifactPosition::MISC1,
+		ArtifactPosition::MISC2,
+		ArtifactPosition::MISC3,
+		ArtifactPosition::MISC4,
+		ArtifactPosition::MISC5,
+	};
+}
+
 DLL_LINKAGE bool ArtifactUtils::isArtRemovable(const std::pair<ArtifactPosition, ArtSlotInfo> & slot)
 {
 	return slot.second.artifact
 		&& !slot.second.locked
-		&& !vstd::contains(unmovableSlots, slot.first);
+		&& !vstd::contains(unmovableSlots(), slot.first);
 }
 
 DLL_LINKAGE bool ArtifactUtils::checkSpellbookIsNeeded(const CGHeroInstance * heroPtr, ArtifactID artID, ArtifactPosition slot)

lib/CArtHandler.h

@@ -386,28 +386,9 @@ namespace ArtifactUtils
 	DLL_LINKAGE ArtifactPosition getArtifactDstPosition(	const CArtifactInstance * artifact, 
 								const CArtifactSet * target,
 								ArtBearer::ArtBearer bearer);
-	const std::array<ArtifactPosition::EArtifactPosition, 2> unmovableSlots =
-	{
-		ArtifactPosition::SPELLBOOK,
-		ArtifactPosition::MACH4
-	};
-	const std::array<ArtifactPosition::EArtifactPosition, 14> constituentWornSlots =
-	{
-		ArtifactPosition::HEAD,
-		ArtifactPosition::SHOULDERS,
-		ArtifactPosition::NECK,
-		ArtifactPosition::RIGHT_HAND,
-		ArtifactPosition::LEFT_HAND,
-		ArtifactPosition::TORSO,
-		ArtifactPosition::RIGHT_RING,
-		ArtifactPosition::LEFT_RING,
-		ArtifactPosition::FEET,
-		ArtifactPosition::MISC1,
-		ArtifactPosition::MISC2,
-		ArtifactPosition::MISC3,
-		ArtifactPosition::MISC4,
-		ArtifactPosition::MISC5,
-	};
+	// TODO: Make this constexpr when the toolset is upgraded
+	DLL_LINKAGE const std::vector<ArtifactPosition::EArtifactPosition> & unmovableSlots();
+	DLL_LINKAGE const std::vector<ArtifactPosition::EArtifactPosition> & constituentWornSlots();
 	DLL_LINKAGE bool isArtRemovable(const std::pair<ArtifactPosition, ArtSlotInfo> & slot);
 	DLL_LINKAGE bool checkSpellbookIsNeeded(const CGHeroInstance * heroPtr, ArtifactID artID, ArtifactPosition slot);
 	DLL_LINKAGE bool isSlotBackpack(ArtifactPosition slot);

lib/GameConstants.h

@@ -1054,6 +1054,14 @@ public:
 	ID_LIKE_CLASS_COMMON(ArtifactID, EArtifactID)
 
 	EArtifactID num;
+
+	struct hash
+	{
+		size_t operator()(const ArtifactID & aid) const
+		{
+			return std::hash<int>()(aid.num);
+		}
+	};
 };
 
 ID_LIKE_OPERATORS(ArtifactID, ArtifactID::EArtifactID)

lib/mapObjects/CQuest.h

@@ -15,25 +15,13 @@
 #include "../CCreatureSet.h"
 #include "../NetPacksBase.h"
 
-namespace std
-{
-	// Used in std::unordered_map
-	template<> struct hash<VCMI_LIB_WRAP_NAMESPACE(ArtifactID)>
-	{
-		size_t operator()(const VCMI_LIB_WRAP_NAMESPACE(ArtifactID) & aid) const
-		{
-			return hash<int>{}(aid.num);
-		}
-	};
-}
-
 VCMI_LIB_NAMESPACE_BEGIN
 
 class CGCreature;
 
 class DLL_LINKAGE CQuest final
 {
-	mutable std::unordered_map<ArtifactID, unsigned> artifactsRequirements; // artifact ID -> required count
+	mutable std::unordered_map<ArtifactID, unsigned, ArtifactID::hash> artifactsRequirements; // artifact ID -> required count
 
 public:
 	enum Emission {MISSION_NONE = 0, MISSION_LEVEL = 1, MISSION_PRIMARY_STAT = 2, MISSION_KILL_HERO = 3, MISSION_KILL_CREATURE = 4,