Make Poisoned Water Supply quest multiplayer compatible

Source/levels/town.cpp

@@ -346,6 +346,13 @@ void TownOpenGrave()
 	dPiece[34][21] = 0x53b;
 }
 
+void CleanTownFountain()
+{
+	if (!pMegaTiles)
+		return;
+	FillTile(60, 70, 71);
+}
+
 void CreateTown(lvl_entry entry)
 {
 	dminPosition = { 10, 10 };
@@ -374,7 +381,6 @@ void CreateTown(lvl_entry entry)
 	}
 
 	DrlgTPass3();
-	pMegaTiles = nullptr;
 }
 
 } // namespace devilution

Source/levels/town.h

@@ -44,6 +44,11 @@ void TownOpenHive();
  */
 void TownOpenGrave();
 
+/**
+ * @brief Update town to show clean/not poisoned water fountain
+ */
+void CleanTownFountain();
+
 /**
  * @brief Initialize town level
  * @param entry Method of entry

Source/quests.cpp

@@ -17,6 +17,7 @@
 #include "engine/world_tile.hpp"
 #include "init.h"
 #include "levels/gendung.h"
+#include "levels/town.h"
 #include "levels/trigs.h"
 #include "minitext.h"
 #include "missiles.h"
@@ -350,6 +351,7 @@ void CheckQuests()
 		    && ActiveMonsterCount == 4
 		    && Quests[Q_PWATER]._qactive != QUEST_DONE) {
 			Quests[Q_PWATER]._qactive = QUEST_DONE;
+			NetSendCmdQuest(true, Quests[Q_PWATER]);
 			PlaySfxLoc(IS_QUESTDN, MyPlayer->position.tile);
 			LoadPalette("levels\\l3data\\l3pwater.pal", false);
 			UpdatePWaterPalette();
@@ -691,6 +693,11 @@ void ResyncQuests()
 		ObjChangeMapResync(posPentagram.x, posPentagram.y, posPentagram.x + 5, posPentagram.y + 5);
 		InitL4Triggers();
 	}
+	if (currlevel == 0
+	    && Quests[Q_PWATER]._qactive == QUEST_DONE
+	    && gbIsMultiplayer) {
+		CleanTownFountain();
+	}
 }
 
 void DrawQuestLog(const Surface &out)

Source/towners.cpp

@@ -484,12 +484,14 @@ void TalkToHealer(Player &player, Towner &healer)
 			Quests[Q_PWATER]._qlog = true;
 			Quests[Q_PWATER]._qmsg = TEXT_POISON3;
 			InitQTextMsg(TEXT_POISON3);
+			NetSendCmdQuest(true, Quests[Q_PWATER]);
 			return;
 		}
 		if (Quests[Q_PWATER]._qactive == QUEST_DONE && Quests[Q_PWATER]._qvar1 != 2) {
 			Quests[Q_PWATER]._qvar1 = 2;
 			InitQTextMsg(TEXT_POISON5);
 			SpawnUnique(UITEM_TRING, healer.position + Direction::SouthWest);
+			NetSendCmdQuest(true, Quests[Q_PWATER]);
 			return;
 		}
 	}