feat(Core/Hooks): Added new BG hooks (#2008)

src/server/game/Battlegrounds/Battleground.cpp

@@ -1150,6 +1150,8 @@ void Battleground::RemovePlayerAtLeave(Player* player)
 
     // Xinef: remove all criterias on bg leave
     player->ResetAchievementCriteria(ACHIEVEMENT_CRITERIA_CONDITION_BG_MAP, GetMapId(), true);
+
+    sScriptMgr->OnBattlegroundRemovePlayerAtLeave(this, player);
 }
 
 // this method is called when creating bg
@@ -1197,12 +1199,13 @@ void Battleground::AddPlayer(Player* player)
     if (player->HasFlag(PLAYER_FLAGS, PLAYER_FLAGS_AFK))
         player->ToggleAFK();
 
+    sScriptMgr->OnBattlegroundBeforeAddPlayer(this, player);
+
     // score struct must be created in inherited class
 
     uint64 guid = player->GetGUID();
     TeamId teamId = player->GetBgTeamId();
 
-
     // Add to list/maps
     m_Players[guid] = player;
 

src/server/game/Scripting/ScriptMgr.cpp

@@ -2055,6 +2055,16 @@ void ScriptMgr::OnBattlegroundAddPlayer(Battleground* bg, Player* player)
     FOREACH_SCRIPT(BGScript)->OnBattlegroundAddPlayer(bg, player);
 }
 
+void ScriptMgr::OnBattlegroundBeforeAddPlayer(Battleground* bg, Player* player)
+{
+    FOREACH_SCRIPT(BGScript)->OnBattlegroundBeforeAddPlayer(bg, player);
+}
+
+void ScriptMgr::OnBattlegroundRemovePlayerAtLeave(Battleground* bg, Player* player)
+{
+    FOREACH_SCRIPT(BGScript)->OnBattlegroundRemovePlayerAtLeave(bg, player);
+}
+
 // SpellSC
 void ScriptMgr::OnCalcMaxDuration(Aura const* aura, int32& maxDuration)
 {

src/server/game/Scripting/ScriptMgr.h

@@ -1110,6 +1110,12 @@ public:
 
     // Add Player in Battlegroud
     virtual void OnBattlegroundAddPlayer(Battleground* /*bg*/, Player* /*player*/) { }
+
+    // Before added player in Battlegroud
+    virtual void OnBattlegroundBeforeAddPlayer(Battleground* /*bg*/, Player* /*player*/) { }
+
+    // Remove player at leave BG
+    virtual void OnBattlegroundRemovePlayerAtLeave(Battleground* /*bg*/, Player* /*player*/) { }
 };
 
 class SpellSC : public ScriptObject
@@ -1480,6 +1486,8 @@ class ScriptMgr
         void OnBattlegroundEndReward(Battleground* bg, Player* player, TeamId winnerTeamId);
         void OnBattlegroundUpdate(Battleground* bg, uint32 diff);
         void OnBattlegroundAddPlayer(Battleground* bg, Player* player);
+        void OnBattlegroundBeforeAddPlayer(Battleground* bg, Player* player);
+        void OnBattlegroundRemovePlayerAtLeave(Battleground* bg, Player* player);
 
     public: /* SpellSC */