[Zone] Implement zone player count sharding (#4536)

* [Zone] Implement zone player count sharding * Update client.cpp * Update database_instances.cpp * You must request a shard change from the zone you are currently in. * // zone sharding * You cannot request a shard change while in combat. * Query adjustment * Use safe coords * Changes * Fixes to instance query * Push * Push * Final push * Update client.cpp * Update eq_packet_structs.h * Remove pick menu * Comment * Update character_data_repository.h * Update zoning.cpp --------- Co-authored-by: Kinglykrab <kinglykrab@gmail.com>
2026-05-17 03:08:26 +00:00 · 2025-01-08 17:41:16 -06:00
parent 15684567cf
commit c82f1b9afc
22 changed files with 443 additions and 22 deletions
@@ -0,0 +1,137 @@
+#include "../client.h"
+
+void command_zone_shard(Client *c, const Seperator *sep)
+{
+	int arguments = sep->argnum;
+	if (!arguments || !sep->IsNumber(1)) {
+		if (!RuleB(Zone, ZoneShardQuestMenuOnly)) {
+			c->ShowZoneShardMenu();
+		}
+
+		return;
+	}
+
+	if (c->GetAggroCount() > 0) {
+		c->Message(Chat::White, "You cannot request a shard change while in combat.");
+		return;
+	}
+
+	std::string zone_input = sep->arg[1];
+	uint32      zone_id    = 0;
+
+	// if input is id
+	if (Strings::IsNumber(zone_input)) {
+		zone_id = Strings::ToInt(zone_input);
+
+		// validate
+		if (zone_id != 0 && !GetZone(zone_id)) {
+			c->Message(Chat::White, fmt::format("Could not find zone by id [{}]", zone_id).c_str());
+			return;
+		}
+	}
+	else {
+		// validate
+		if (!zone_store.GetZone(zone_input)) {
+			c->Message(Chat::White, fmt::format("Could not find zone by short_name [{}]", zone_input).c_str());
+			return;
+		}
+
+		// validate we got id
+		zone_id = ZoneID(zone_input);
+		if (zone_id == 0) {
+			c->Message(Chat::White, fmt::format("Could not find zone id by short_name [{}]", zone_input).c_str());
+			return;
+		}
+	}
+
+	auto z = GetZone(zone_id);
+	if (z && z->shard_at_player_count == 0) {
+		c->Message(Chat::White, "Zone does not have sharding enabled.");
+		return;
+	}
+
+	auto instance_id = sep->arg[2] ? Strings::ToBigInt(sep->arg[2]) : 0;
+	if (instance_id < -1) {
+		c->Message(Chat::White, "You must enter a valid Instance ID.");
+		return;
+	}
+
+	if (zone_id == c->GetZoneID() && c->GetInstanceID() == instance_id) {
+		c->Message(Chat::White, "You are already in this shard.");
+		return;
+	}
+
+	if (zone_id != c->GetZoneID()) {
+		c->Message(Chat::White, "You must request a shard change from the zone you are currently in.");
+		return;
+	}
+
+	auto results = CharacterDataRepository::GetInstanceZonePlayerCounts(database, c->GetZoneID());
+	if (results.size() <= 1) {
+		c->Message(Chat::White, "No shards found.");
+		return;
+	}
+
+	if (instance_id > 0) {
+		if (!database.CheckInstanceExists(instance_id)) {
+			c->Message(
+				Chat::White,
+				fmt::format(
+					"Instance ID {} does not exist.",
+					instance_id
+				).c_str()
+			);
+			return;
+		}
+
+		auto instance_zone_id = database.GetInstanceZoneID(instance_id);
+		if (!instance_zone_id) {
+			c->Message(
+				Chat::White,
+				fmt::format(
+					"Instance ID {} not found or zone is set to null.",
+					instance_id
+				).c_str()
+			);
+			return;
+		}
+
+		if (instance_zone_id != zone_id) {
+			c->Message(
+				Chat::White,
+				fmt::format(
+					"Instance Zone ID {} does not match zone ID {}.",
+					instance_id,
+					zone_id
+				).c_str()
+			);
+			return;
+		}
+
+		if (!database.CheckInstanceByCharID(instance_id, c->CharacterID())) {
+			database.AddClientToInstance(instance_id, c->CharacterID());
+		}
+
+		if (!database.VerifyInstanceAlive(instance_id, c->CharacterID())) {
+			c->Message(
+				Chat::White,
+				fmt::format(
+					"Instance ID {} expired.",
+					instance_id
+				).c_str()
+			);
+			return;
+		}
+	}
+
+	c->MovePC(
+		zone_id,
+		instance_id,
+		c->GetX(),
+		c->GetY(),
+		c->GetZ(),
+		c->GetHeading(),
+		0,
+		ZoneSolicited
+	);
+}