[Zone] Zone State Improvements (Continued) (#4768)

* [Zone] Zone State Improvements (Continued)

* Ignore a few events when we resume from suspend

* Add is_zone field

* Update database_update_manifest.cpp

* Update database_update_manifest.cpp

* Update database_update_manifest.cpp

* Update zone_save_state.cpp

* Update zone_save_state.cpp

* Add Zone Variables

* Update methods

* Update zone_save_state.cpp

* Update zone_save_state.cpp

---------

Co-authored-by: Kinglykrab <kinglykrab@gmail.com>

zone/zone_save_state.cpp

@@ -291,6 +291,55 @@ inline void LoadNPCState(Zone *zone, NPC *n, ZoneStateSpawnsRepository::ZoneStat
 	n->SetResumedFromZoneSuspend(true);
 }
 
+inline std::string GetZoneVariablesSerialized(Zone *z)
+{
+	std::map<std::string, std::string> variables;
+
+	for (const auto &k: z->GetVariables()) {
+		variables[k] = z->GetVariable(k);
+	}
+
+	try {
+		std::ostringstream os;
+		{
+			cereal::JSONOutputArchiveSingleLine archive(os);
+			archive(variables);
+		}
+		return os.str();
+	}
+	catch (const std::exception &e) {
+		LogZoneState("Failed to serialize variables for zone [{}]", e.what());
+		return "";
+	}
+
+	return "";
+}
+
+inline void LoadZoneVariables(Zone *z, const std::string &variables)
+{
+	if (!Strings::IsValidJson(variables)) {
+		LogZoneState("Invalid JSON data for zone [{}]", variables);
+		return;
+	}
+
+	std::map<std::string, std::string> deserialized_map;
+	try {
+		std::istringstream is(variables);
+		{
+			cereal::JSONInputArchive archive(is);
+			archive(deserialized_map);
+		}
+	}
+	catch (const std::exception &e) {
+		LogZoneState("Failed to load zone variables [{}]", e.what());
+		return;
+	}
+
+	for (const auto &[key, value]: deserialized_map) {
+		z->SetVariable(key, value);
+	}
+}
+
 bool Zone::LoadZoneState(
 	std::unordered_map<uint32, uint32> spawn_times,
 	std::vector<Spawn2DisabledRepository::Spawn2Disabled> disabled_spawns
@@ -315,11 +364,12 @@ bool Zone::LoadZoneState(
 	zone->Process();
 
 	for (auto &s: spawn_states) {
-		if (s.spawngroup_id == 0) {
+		if (s.is_zone) {
+			LoadZoneVariables(zone, s.entity_variables);
 			continue;
 		}
 
-		if (s.is_corpse) {
+		if (s.spawngroup_id == 0 || s.is_corpse || s.is_zone) {
 			continue;
 		}
 
@@ -374,7 +424,7 @@ bool Zone::LoadZoneState(
 
 	// dynamic spawns, quest spawns, triggers etc.
 	for (auto &s: spawn_states) {
-		if (s.spawngroup_id > 0) {
+		if (s.spawngroup_id > 0 || s.is_zone) {
 			continue;
 		}
 
@@ -524,7 +574,13 @@ void Zone::SaveZoneState()
 		bool ignore_npcs =
 				 n.second->GetSpawnGroupId() > 0 ||
 				 n.second->GetNPCTypeID() < 100 ||
-				 n.second->HasOwner();
+				 n.second->GetNPCTypeID() == 500 || // Trap::CreateHiddenTrigger
+				 n.second->IsAura() ||
+				 n.second->IsBot() ||
+				 n.second->IsMerc() ||
+				 n.second->IsTrap() ||
+				 n.second->GetSwarmOwner() ||
+				 n.second->IsPet();
 		if (ignore_npcs) {
 			continue;
 		}
@@ -560,6 +616,17 @@ void Zone::SaveZoneState()
 		spawns.emplace_back(s);
 	}
 
+	// zone state variables
+	if (!GetVariables().empty()) {
+		ZoneStateSpawnsRepository::ZoneStateSpawns z{};
+		z.zone_id          = GetZoneID();
+		z.instance_id      = GetInstanceID();
+		z.is_zone          = 1;
+		z.entity_variables = GetZoneVariablesSerialized(this);
+
+		spawns.emplace_back(z);
+	}
+
 	ZoneStateSpawnsRepository::DeleteWhere(
 		database,
 		fmt::format(