Core/Weather: Weather updates are now sent to all players in the zone instead of the first player it finds in the zone and all players nearby.

Thanks to @Nawuko, @Magnifikator and @Shauren

Closes #11380
Fixes #11370

src/server/game/Entities/Player/Player.cpp

@@ -7524,14 +7524,9 @@ void Player::UpdateZone(uint32 newZone, uint32 newArea)
     {
         if (Weather* weather = WeatherMgr::FindWeather(zone->ID))
             weather->SendWeatherUpdateToPlayer(this);
-        else
-        {
-            if (!WeatherMgr::AddWeather(zone->ID))
-            {
-                // send fine weather packet to remove old zone's weather
-                WeatherMgr::SendFineWeatherUpdateToPlayer(this);
-            }
-        }
+        else if (!WeatherMgr::AddWeather(zone->ID))
+            // send fine weather packet to remove old zone's weather
+            WeatherMgr::SendFineWeatherUpdateToPlayer(this);
     }
 
     sScriptMgr->OnPlayerUpdateZone(this, newZone, newArea);

src/server/game/Weather/Weather.cpp

@@ -194,7 +194,6 @@ bool Weather::ReGenerate()
 void Weather::SendWeatherUpdateToPlayer(Player* player)
 {
     WorldPacket data(SMSG_WEATHER, (4+4+4));
-
     data << uint32(GetWeatherState()) << (float)m_grade << uint8(0);
     player->GetSession()->SendPacket(&data);
 }
@@ -202,10 +201,6 @@ void Weather::SendWeatherUpdateToPlayer(Player* player)
 /// Send the new weather to all players in the zone
 bool Weather::UpdateWeather()
 {
-    Player* player = sWorld->FindPlayerInZone(m_zone);
-    if (!player)
-        return false;
-
     ///- Send the weather packet to all players in this zone
     if (m_grade >= 1)
         m_grade = 0.9999f;
@@ -215,8 +210,13 @@ bool Weather::UpdateWeather()
     WeatherState state = GetWeatherState();
 
     WorldPacket data(SMSG_WEATHER, (4+4+4));
-    data << uint32(state) << (float)m_grade << uint8(0);
-    player->SendMessageToSet(&data, true);
+    data << uint32(state);
+    data << (float)m_grade;
+    data << uint8(0);
+
+    //- Returns false if there were no players found to update
+    if (!sWorld->SendZoneMessage(m_zone, &data))
+        return false;
 
     ///- Log the event
     char const* wthstr;
@@ -263,8 +263,8 @@ bool Weather::UpdateWeather()
             wthstr = "fine";
             break;
     }
-    TC_LOG_INFO("misc", "Change the weather of zone %u to %s.", m_zone, wthstr);
 
+    TC_LOG_INFO("misc", "Change the weather of zone %u to %s.", m_zone, wthstr);
     sScriptMgr->OnWeatherChange(this, state, m_grade);
     return true;
 }

src/server/game/Weather/WeatherMgr.cpp

@@ -145,7 +145,6 @@ void LoadWeatherData()
 void SendFineWeatherUpdateToPlayer(Player* player)
 {
     WorldPacket data(SMSG_WEATHER, (4+4+4));
-
     data << (uint32)WEATHER_STATE_FINE << (float)0.0f << uint8(0);
     player->GetSession()->SendPacket(&data);
 }

src/server/game/World/World.cpp

@@ -169,10 +169,7 @@ Player* World::FindPlayerInZone(uint32 zone)
             continue;
 
         if (player->IsInWorld() && player->GetZoneId() == zone)
-        {
-            // Used by the weather system. We return the player to broadcast the change weather message to him and all players in the zone.
             return player;
-        }
     }
     return NULL;
 }
@@ -2278,12 +2275,14 @@ void World::SendGlobalText(const char* text, WorldSession* self)
 }
 
 /// Send a packet to all players (or players selected team) in the zone (except self if mentioned)
-void World::SendZoneMessage(uint32 zone, WorldPacket* packet, WorldSession* self, uint32 team)
+bool World::SendZoneMessage(uint32 zone, WorldPacket* packet, WorldSession* self, uint32 team)
 {
+    bool foundPlayerToSend = false;
     SessionMap::const_iterator itr;
+
     for (itr = m_sessions.begin(); itr != m_sessions.end(); ++itr)
     {
-        if (itr->second &&
+        if (itr->second)
             itr->second->GetPlayer() &&
             itr->second->GetPlayer()->IsInWorld() &&
             itr->second->GetPlayer()->GetZoneId() == zone &&
@@ -2291,8 +2290,11 @@ void World::SendZoneMessage(uint32 zone, WorldPacket* packet, WorldSession* self
             (team == 0 || itr->second->GetPlayer()->GetTeam() == team))
         {
             itr->second->SendPacket(packet);
+            foundPlayerToSend = true;
         }
     }
+
+    return foundPlayerToSend;
 }
 
 /// Send a System Message to all players in the zone (except self if mentioned)

src/server/game/World/World.h

@@ -628,7 +628,7 @@ class World
         void SendGMText(int32 string_id, ...);
         void SendGlobalMessage(WorldPacket* packet, WorldSession* self = 0, uint32 team = 0);
         void SendGlobalGMMessage(WorldPacket* packet, WorldSession* self = 0, uint32 team = 0);
-        void SendZoneMessage(uint32 zone, WorldPacket* packet, WorldSession* self = 0, uint32 team = 0);
+        bool SendZoneMessage(uint32 zone, WorldPacket* packet, WorldSession* self = 0, uint32 team = 0);
         void SendZoneText(uint32 zone, const char *text, WorldSession* self = 0, uint32 team = 0);
         void SendServerMessage(ServerMessageType type, const char *text = "", Player* player = NULL);