Add support for season-dependant gameevents

Patch by Liberate

--HG--
branch : trunk

src/game/GameEventMgr.cpp

@@ -1068,6 +1068,24 @@ uint32 GameEventMgr::Initialize()                           // return the next e
     return delay;
 }
 
+void GameEventMgr::StartArenaSeason()
+{
+    QueryResult_AutoPtr result = WorldDatabase.PQuery("SELECT event FROM season_linked_event WHERE season = '%i'",sWorld.getConfig(CONFIG_ARENA_SEASON_ID));
+
+    if (!result)
+    {
+        sLog.outError("ArenaSeason (%i) must be an existant Arena Season",sWorld.getConfig(CONFIG_ARENA_SEASON_ID));
+        return;
+    }
+
+    Field *fields = result->Fetch();
+
+    uint16 eventId = fields[0].GetUInt16();
+
+    StartEvent(eventId,true);
+    sLog.outString("Arena Season %i started...",sWorld.getConfig(CONFIG_ARENA_SEASON_ID));
+}
+
 uint32 GameEventMgr::Update()                               // return the next event delay in ms
 {
     time_t currenttime = time(NULL);

src/game/GameEventMgr.h

@@ -105,6 +105,7 @@ class GameEventMgr
         uint32 Update();
         bool IsActiveEvent(uint16 event_id) { return (m_ActiveEvents.find(event_id) != m_ActiveEvents.end()); }
         uint32 Initialize();
+        void StartArenaSeason();
         void StartInternalEvent(uint16 event_id);
         bool StartEvent(uint16 event_id, bool overwrite = false);
         void StopEvent(uint16 event_id, bool overwrite = false);

src/game/World.cpp

@@ -1656,6 +1656,9 @@ void World::SetInitialWorldSettings()
     uint32 nextGameEvent = gameeventmgr.Initialize();
     m_timers[WUPDATE_EVENTS].SetInterval(nextGameEvent);    //depend on next event
 
+    sLog.outString("Starting Arena Season...");
+    gameeventmgr.StartArenaSeason();
+
     sLog.outString("Loading World States..."); // must be loaded before battleground and outdoor PvP
     LoadWorldStates();