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Let world handle expedition leader changes

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This should eliminate race conditions caused by zones trying to set
a leader when members in different zones quit at the same time

Zone still detects when leader goes offline to trigger a change
since it's easier than having world process expedition member status
updates and perform expedition lookups
This commit is contained in:
hg
2020-11-01 15:01:43 -05:00
parent 955cbeb826
commit 6acfc41778
15 changed files with 170 additions and 127 deletions
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zone/expedition.cpp
+19 -68
View File
@@ -578,12 +578,6 @@ bool Expedition::RemoveMember(const std::string& remove_char_name)
ProcessMemberRemoved(member.name, member.char_id);
SendWorldMemberChanged(member.name, member.char_id, true);
// live always sends a leader update but we can send only if leader changes
if (member.char_id == m_leader.char_id)
{
ChooseNewLeader();
}
return true;
}
@@ -609,11 +603,6 @@ void Expedition::SwapMember(Client* add_client, const std::string& remove_char_n
ProcessMemberRemoved(member.name, member.char_id);
ProcessMemberAdded(add_client->GetName(), add_client->CharacterID());
SendWorldMemberSwapped(member.name, member.char_id, add_client->GetName(), add_client->CharacterID());
if (!m_members.empty() && member.char_id == m_leader.char_id)
{
ChooseNewLeader();
}
}
void Expedition::SetMemberStatus(Client* client, ExpeditionMemberStatus status)
@@ -623,11 +612,11 @@ void Expedition::SetMemberStatus(Client* client, ExpeditionMemberStatus status)
UpdateMemberStatus(client->CharacterID(), status);
SendWorldMemberStatus(client->CharacterID(), status);
// we either changed leader status here or leader was already offline and
// a member coming online needs to trigger a leader change
// world could detect this itself but it'd have to process member status updates
// a member coming online will trigger a leader change if all members were offline
if (m_leader.status == ExpeditionMemberStatus::Offline)
{
ChooseNewLeader();
SendWorldExpeditionUpdate(ServerOP_ExpeditionChooseNewLeader);
}
}
}
@@ -662,20 +651,6 @@ void Expedition::UpdateMemberStatus(uint32_t update_member_id, ExpeditionMemberS
}
}
bool Expedition::ChooseNewLeader()
{
for (const auto& member : m_members)
{
if (member.char_id != m_leader.char_id && member.status == ExpeditionMemberStatus::Online)
{
LogExpeditionsModerate("Replacing leader [{}] with [{}]", m_leader.name, member.name);
SetNewLeader(member.char_id, member.name);
return true;
}
}
return false;
}
void Expedition::SendClientExpeditionInvite(
Client* client, const std::string& inviter_name, const std::string& swap_remove_name)
{
@@ -1051,17 +1026,8 @@ void Expedition::DzMakeLeader(Client* requester, std::string new_leader_name)
return;
}
// database is not updated until new leader client validated
Client* new_leader_client = entity_list.GetClientByName(new_leader_name.c_str());
if (new_leader_client)
{
ProcessMakeLeader(requester, new_leader_client, new_leader_name, true);
}
else
{
// new leader not in this zone, let world verify and pass to new leader's zone
SendWorldMakeLeaderRequest(requester->GetName(), new_leader_name);
}
// leader can only be changed by world
SendWorldMakeLeaderRequest(requester->GetName(), new_leader_name);
}
void Expedition::DzRemovePlayer(Client* requester, std::string char_name)
@@ -1164,16 +1130,18 @@ void Expedition::SetLocked(
}
}
void Expedition::SetNewLeader(uint32_t new_leader_id, const std::string& new_leader_name)
void Expedition::ProcessLeaderChanged(uint32_t new_leader_id)
{
ExpeditionDatabase::UpdateLeaderID(m_id, new_leader_id);
ProcessLeaderChanged(new_leader_id, new_leader_name);
SendWorldLeaderChanged();
}
auto new_leader = GetMemberData(new_leader_id);
if (new_leader.char_id == 0)
{
LogExpeditions("Processed invalid new leader id [{}] for expedition [{}]", new_leader_id, m_id);
return;
}
void Expedition::ProcessLeaderChanged(uint32_t new_leader_id, const std::string& new_leader_name)
{
m_leader = { new_leader_id, new_leader_name, ExpeditionMemberStatus::Online };
LogExpeditionsModerate("Replaced [{}] leader [{}] with [{}]", m_id, m_leader.name, new_leader.name);
m_leader = new_leader;
// update each client's expedition window in this zone
auto outapp_leader = CreateLeaderNamePacket();
@@ -1219,7 +1187,6 @@ void Expedition::ProcessMakeLeader(
{
new_leader_client->MessageString(Chat::Yellow, DZMAKELEADER_YOU);
}
SetNewLeader(new_leader_client->CharacterID(), new_leader_client->GetName());
}
}
@@ -1592,19 +1559,6 @@ void Expedition::SendWorldAddPlayerInvite(
worldserver.SendPacket(pack.get());
}
void Expedition::SendWorldLeaderChanged()
{
uint32_t pack_size = sizeof(ServerExpeditionMemberChange_Struct);
auto pack = std::unique_ptr<ServerPacket>(new ServerPacket(ServerOP_ExpeditionLeaderChanged, pack_size));
auto buf = reinterpret_cast<ServerExpeditionMemberChange_Struct*>(pack->pBuffer);
buf->expedition_id = GetID();
buf->sender_zone_id = zone ? zone->GetZoneID() : 0;
buf->sender_instance_id = zone ? zone->GetInstanceID() : 0;
buf->char_id = m_leader.char_id;
strn0cpy(buf->char_name, m_leader.name.c_str(), sizeof(buf->char_name));
worldserver.SendPacket(pack.get());
}
void Expedition::SendWorldLockoutDuration(
const ExpeditionLockoutTimer& lockout, int seconds, bool members_only)
{
@@ -1894,14 +1848,11 @@ void Expedition::HandleWorldMessage(ServerPacket* pack)
}
case ServerOP_ExpeditionLeaderChanged:
{
auto buf = reinterpret_cast<ServerExpeditionMemberChange_Struct*>(pack->pBuffer);
if (zone && !zone->IsZone(buf->sender_zone_id, buf->sender_instance_id))
auto buf = reinterpret_cast<ServerExpeditionLeaderID_Struct*>(pack->pBuffer);
auto expedition = Expedition::FindCachedExpeditionByID(buf->expedition_id);
if (expedition)
{
auto expedition = Expedition::FindCachedExpeditionByID(buf->expedition_id);
if (expedition)
{
expedition->ProcessLeaderChanged(buf->char_id, buf->char_name);
}
expedition->ProcessLeaderChanged(buf->leader_id);
}
break;
}