Make skeleton king's lair multiplayer compatible

Source/levels/drlg_l1.cpp

@@ -383,7 +383,7 @@ void LoadQuestSetPieces()
 {
 	if (Quests[Q_BUTCHER].IsAvailable()) {
 		pSetPiece = LoadFileInMem<uint16_t>("levels\\l1data\\rnd6.dun");
-	} else if (Quests[Q_SKELKING].IsAvailable() && !gbIsMultiplayer) {
+	} else if (Quests[Q_SKELKING].IsAvailable() && !UseMultiplayerQuests()) {
 		pSetPiece = LoadFileInMem<uint16_t>("levels\\l1data\\skngdo.dun");
 	} else if (Quests[Q_LTBANNER].IsAvailable()) {
 		pSetPiece = LoadFileInMem<uint16_t>("levels\\l1data\\banner2.dun");

Source/levels/setmaps.cpp

@@ -11,6 +11,7 @@
 #include "levels/drlg_l4.h"
 #include "levels/gendung.h"
 #include "levels/trigs.h"
+#include "msg.h"
 #include "objdat.h"
 #include "objects.h"
 #include "quests.h"
@@ -109,6 +110,7 @@ void LoadSetMap()
 		if (Quests[Q_SKELKING]._qactive == QUEST_INIT) {
 			Quests[Q_SKELKING]._qactive = QUEST_ACTIVE;
 			Quests[Q_SKELKING]._qvar1 = 1;
+			NetSendCmdQuest(true, Quests[Q_SKELKING]);
 		}
 		LoadPreL1Dungeon("levels\\l1data\\sklkng1.dun");
 		LoadL1Dungeon("levels\\l1data\\sklkng2.dun", { 83, 44 });

Source/monster.cpp

@@ -481,7 +481,7 @@ void PlaceQuestMonsters()
 			PlaceUniqueMonst(UniqueMonsterType::Butcher, 0, 0);
 		}
 
-		if (currlevel == Quests[Q_SKELKING]._qlevel && gbIsMultiplayer) {
+		if (currlevel == Quests[Q_SKELKING]._qlevel && UseMultiplayerQuests()) {
 			for (size_t i = 0; i < LevelMonsterTypeCount; i++) {
 				if (IsSkel(LevelMonsterTypes[i].type)) {
 					PlaceUniqueMonst(UniqueMonsterType::SkeletonKing, i, 30);
@@ -3262,7 +3262,7 @@ void GetLevelMTypes()
 		if (Quests[Q_WARLORD].IsAvailable())
 			AddMonsterType(UniqueMonsterType::WarlordOfBlood, PLACE_UNIQUE);
 
-		if (gbIsMultiplayer && currlevel == Quests[Q_SKELKING]._qlevel) {
+		if (UseMultiplayerQuests() && currlevel == Quests[Q_SKELKING]._qlevel) {
 
 			AddMonsterType(MT_SKING, PLACE_UNIQUE);