Correct SMSG_INSTANCE_DIFFICULTY structure (fixes raid difficulty display).

Move GetDifficulty() in under Map-scope, so it's reachable for map-based functions

--HG--
branch : trunk

src/game/Map.cpp

@@ -2740,7 +2740,7 @@ void InstanceMap::SetResetSchedule(bool on)
     }
 }
 
-MapDifficulty const* InstanceMap::GetMapDifficulty() const
+MapDifficulty const* Map::GetMapDifficulty() const
 {
     return GetMapDifficultyData(GetId(),GetDifficulty());
 }

src/game/Map.h

@@ -357,6 +357,11 @@ class Map : public GridRefManager<NGridType>, public Trinity::ObjectLevelLockabl
         virtual bool CanEnter(Player* /*player*/) { return true; }
         const char* GetMapName() const;
 
+        // have meaning only for instanced map (that have set real difficulty)
+        Difficulty GetDifficulty() const { return Difficulty(GetSpawnMode()); }
+        bool IsRegularDifficulty() const { return GetDifficulty() == REGULAR_DIFFICULTY; }
+        MapDifficulty const* GetMapDifficulty() const;
+
         bool Instanceable() const { return i_mapEntry && i_mapEntry->Instanceable(); }
         // NOTE: this duplicate of Instanceable(), but Instanceable() can be changed when BG also will be instanceable
         bool IsDungeon() const { return i_mapEntry && i_mapEntry->IsDungeon(); }
@@ -581,12 +586,8 @@ class InstanceMap : public Map
         void SendResetWarnings(uint32 timeLeft) const;
         void SetResetSchedule(bool on);
 
-        // have meaning only for instanced map (that have set real difficulty)
-        Difficulty GetDifficulty() const { return Difficulty(GetSpawnMode()); }
-        bool IsRegularDifficulty() const { return GetDifficulty() == REGULAR_DIFFICULTY; }
         uint32 GetMaxPlayers() const;
         uint32 GetMaxResetDelay() const;
-        MapDifficulty const* GetMapDifficulty() const;
 
         virtual void InitVisibilityDistance();
     private:

src/game/Player.cpp

@@ -20713,6 +20713,10 @@ void Player::SendInitialPacketsBeforeAddToMap()
     SendTalentsInfoData(false);
 
     // SMSG_INSTANCE_DIFFICULTY
+    data.Initialize(SMSG_INSTANCE_DIFFICULTY, 4+4);
+    data << uint32(GetMap()->GetDifficulty());
+    data << uint32(0);
+    GetSession()->SendPacket(&data);
 
     SendInitialSpells();