Core: Add wintergrasp-patch to wintergrasp_cleanup branch - resurrected from an old work-repository, now over as a branch to work on.

Original patch by socolin, cand a ton of contributors :
mathman, joda, spp, silinoron, josh, malcrom, shauren, machiavelli, click, rat, leak, tobmaps, _manuel_, the tcfr team (via socolin), and tons of others for chiming in.

NOTE: THIS IS A WORKING-BRANCH, AND _NOT_ MENT FOR PUBLIC USE OR EVEN CONSIDERED STABLE!

src/server/game/Spells/Auras/SpellAuraEffects.cpp

@@ -35,6 +35,7 @@
 #include "GridNotifiersImpl.h"
 #include "CellImpl.h"
 #include "ScriptMgr.h"
+#include "BattlefieldMgr.h"
 
 class Aura;
 //
@@ -4815,8 +4816,12 @@ void AuraEffect::HandleAuraDummy(AuraApplication const* aurApp, uint8 mode, bool
                         case 2584: // Waiting to Resurrect
                             // Waiting to resurrect spell cancel, we must remove player from resurrect queue
                             if (target->GetTypeId() == TYPEID_PLAYER)
-                                if (Battleground *bg = target->ToPlayer()->GetBattleground())
+                            {
+                                if (Battleground* bg = target->ToPlayer()->GetBattleground())
                                     bg->RemovePlayerFromResurrectQueue(target->GetGUID());
+                                if(Battlefield* bf = sBattlefieldMgr.GetBattlefieldToZoneId(target->GetZoneId()))
+                                    bf->RemovePlayerFromResurrectQueue(target->GetGUID());
+                            }
                             break;
                         case 36730:                                     // Flame Strike
                         {
@@ -4853,6 +4858,7 @@ void AuraEffect::HandleAuraDummy(AuraApplication const* aurApp, uint8 mode, bool
                             target->CastSpell((Unit*)NULL, GetAmount(), true, NULL, this);
                             break;
                         case 58600: // Restricted Flight Area
+                        case 58730: // Restricted Flight Area
                             if (aurApp->GetRemoveMode() == AURA_REMOVE_BY_EXPIRE)
                                 target->CastSpell(target, 58601, true);
                             break;

src/server/game/Spells/Spell.cpp

@@ -52,6 +52,7 @@
 #include "DisableMgr.h"
 #include "SpellScript.h"
 #include "InstanceScript.h"
+#include "BattlefieldMgr.h"
 
 extern pEffect SpellEffects[TOTAL_SPELL_EFFECTS];
 
@@ -5472,8 +5473,9 @@ SpellCastResult Spell::CheckCast(bool strict)
                 // allow always ghost flight spells
                 if (m_originalCaster && m_originalCaster->GetTypeId() == TYPEID_PLAYER && m_originalCaster->isAlive())
                 {
+                    Battlefield* Bf = sBattlefieldMgr.GetBattlefieldToZoneId(m_originalCaster->GetZoneId());
                     if (AreaTableEntry const* pArea = GetAreaEntryByAreaID(m_originalCaster->GetAreaId()))
-                        if (pArea->flags & AREA_FLAG_NO_FLY_ZONE)
+                        if ((pArea->flags & AREA_FLAG_NO_FLY_ZONE) || (Bf && !Bf->CanFlyIn()))
                             return m_IsTriggeredSpell ? SPELL_FAILED_DONT_REPORT : SPELL_FAILED_NOT_HERE;
                 }
                 break;

src/server/game/Spells/SpellEffects.cpp

@@ -6976,6 +6976,7 @@ void Spell::EffectPlayerNotification(SpellEffIndex effIndex)
         case 58730: // Restricted Flight Area
         case 58600: // Restricted Flight Area
             unitTarget->ToPlayer()->GetSession()->SendNotification(LANG_ZONE_NOFLYZONE);
+            unitTarget->PlayDirectSound(9417); // Fel Reaver sound
             break;
     }
 

src/server/game/Spells/SpellMgr.cpp

@@ -25,6 +25,7 @@
 #include "Chat.h"
 #include "Spell.h"
 #include "BattlegroundMgr.h"
+#include "BattlefieldMgr.h"
 #include "CreatureAI.h"
 #include "MapManager.h"
 #include "BattlegroundIC.h"
@@ -3289,6 +3290,26 @@ bool SpellArea::IsFitToRequirements(Player const* player, uint32 newZone, uint32
                     return false;
                 break;
             }
+        case 58730: // No fly Zone - Wintergrasp
+            {
+                if (!player)
+                    return false;
+
+                Battlefield* Bf = sBattlefieldMgr.GetBattlefieldToZoneId(player->GetZoneId());
+                if (!Bf || Bf->CanFlyIn() || (!player->HasAuraType(SPELL_AURA_MOD_INCREASE_MOUNTED_FLIGHT_SPEED) && !player->HasAuraType(SPELL_AURA_FLY)))
+                    return false;
+                break;
+            }
+        case 57940: // Essence of Wintergrasp - Northrend
+            {
+                if (!player)
+                    return false;
+
+                Battlefield* Bf = sBattlefieldMgr.GetBattlefieldToZoneId(4197);
+                if (!Bf || player->GetTeamId() != Bf->GetDefenderTeam())
+                    return false;
+                break;
+            }
         case SPELL_OIL_REFINERY: // Oil Refinery - Isle of Conquest.
         case SPELL_QUARRY: // Quarry - Isle of Conquest.
             {