From 3a39aaeed53d994d88d854dc63cfbc0cc80a6eb8 Mon Sep 17 00:00:00 2001
From: Dmitry Brusenskiy <brussens@hoswac.ru>
Date: Tue, 19 Feb 2019 05:24:55 +0300
Subject: [PATCH] Core/Hooks: Adds hooks for start and stop game events (#1472)

---
 src/server/game/Events/GameEventMgr.cpp | 18 +++++++++---------
 src/server/game/Scripting/ScriptMgr.cpp | 24 ++++++++++++++++++++++++
 src/server/game/Scripting/ScriptMgr.h   | 21 ++++++++++++++++++++-
 3 files changed, 53 insertions(+), 10 deletions(-)

diff --git a/src/server/game/Events/GameEventMgr.cpp b/src/server/game/Events/GameEventMgr.cpp
index 050f89005..d91aa4eee 100644
--- a/src/server/game/Events/GameEventMgr.cpp
+++ b/src/server/game/Events/GameEventMgr.cpp
@@ -18,6 +18,7 @@
 #include "UnitAI.h"
 #include "GameObjectAI.h"
 #include "Transport.h"
+#include "ScriptMgr.h"
 #ifdef ELUNA
 #include "LuaEngine.h"
 #endif
@@ -127,10 +128,10 @@ bool GameEventMgr::StartEvent(uint16 event_id, bool overwrite)
             if (data.end <= data.start)
                 data.end = data.start + data.length;
         }
-#ifdef ELUNA
+
         if (IsActiveEvent(event_id))
-            sEluna->OnGameEventStart(event_id);
-#endif
+            sScriptMgr->OnGameEventStart(event_id);
+
         return false;
     }
     else
@@ -153,10 +154,10 @@ bool GameEventMgr::StartEvent(uint16 event_id, bool overwrite)
         // or to scedule another update where the next event will be started
         if (overwrite && conditions_met)
             sWorld->ForceGameEventUpdate();
-#ifdef ELUNA
+
         if (IsActiveEvent(event_id))
-            sEluna->OnGameEventStart(event_id);
-#endif
+            sScriptMgr->OnGameEventStart(event_id);
+
         return conditions_met;
     }
 }
@@ -199,10 +200,9 @@ void GameEventMgr::StopEvent(uint16 event_id, bool overwrite)
             CharacterDatabase.CommitTransaction(trans);
         }
     }
-#ifdef ELUNA
+
     if (!IsActiveEvent(event_id))
-        sEluna->OnGameEventStop(event_id);
-#endif
+        sScriptMgr->OnGameEventStop(event_id);
 }
 
 void GameEventMgr::LoadFromDB()
diff --git a/src/server/game/Scripting/ScriptMgr.cpp b/src/server/game/Scripting/ScriptMgr.cpp
index a712df08a..5a3bce6b1 100644
--- a/src/server/game/Scripting/ScriptMgr.cpp
+++ b/src/server/game/Scripting/ScriptMgr.cpp
@@ -60,6 +60,7 @@ template class ScriptRegistry<MovementHandlerScript>;
 template class ScriptRegistry<BGScript>;
 template class ScriptRegistry<SpellSC>;
 template class ScriptRegistry<AccountScript>;
+template class ScriptRegistry<GameEventScript>;
 
 #include "ScriptMgrMacros.h"
 
@@ -213,6 +214,7 @@ void ScriptMgr::Unload()
     SCR_CLEAR(ModuleScript);
     SCR_CLEAR(BGScript);
     SCR_CLEAR(SpellSC);
+    SCR_CLEAR(GameEventScript);
 
     #undef SCR_CLEAR
 }
@@ -2058,6 +2060,22 @@ void ScriptMgr::OnCalcMaxDuration(Aura const* aura, int32& maxDuration)
     FOREACH_SCRIPT(SpellSC)->OnCalcMaxDuration(aura, maxDuration);
 }
 
+void ScriptMgr::OnGameEventStart(uint16 EventID)
+{
+#ifdef ELUNA
+    sEluna->OnGameEventStart(EventId);
+#endif
+    FOREACH_SCRIPT(GameEventScript)->OnStart(EventID);
+}
+
+void ScriptMgr::OnGameEventStop(uint16 EventID)
+{
+#ifdef ELUNA
+    sEluna->OnGameEventStop(EventID);
+#endif
+    FOREACH_SCRIPT(GameEventScript)->OnStop(EventID);
+}
+
 AllMapScript::AllMapScript(const char* name)
     : ScriptObject(name)
 {
@@ -2257,3 +2275,9 @@ ModuleScript::ModuleScript(const char* name)
     ScriptRegistry<ModuleScript>::AddScript(this);
 }
 
+GameEventScript::GameEventScript(const char* name)
+    : ScriptObject(name)
+{
+    ScriptRegistry<GameEventScript>::AddScript(this);
+}
+
diff --git a/src/server/game/Scripting/ScriptMgr.h b/src/server/game/Scripting/ScriptMgr.h
index 0656c679a..effa5330b 100644
--- a/src/server/game/Scripting/ScriptMgr.h
+++ b/src/server/game/Scripting/ScriptMgr.h
@@ -20,6 +20,7 @@
 #include "AchievementMgr.h"
 #include "DynamicObject.h"
 #include "ArenaTeam.h"
+#include "GameEventMgr.h"
 
 class AuctionHouseObject;
 class AuraScript;
@@ -1135,6 +1136,19 @@ class ModuleScript : public ScriptObject
         ModuleScript(const char* name);
 };
 
+class GameEventScript : public ScriptObject
+{
+protected:
+    GameEventScript(const char* name);
+
+public:
+    // Runs on start event
+    virtual void OnStart(uint16 /*EventID*/) { }
+    
+    // Runs on stop event
+    virtual void OnStop(uint16 /*EventID*/) { }
+};
+
 // Placed here due to ScriptRegistry::AddScript dependency.
 #define sScriptMgr ACE_Singleton<ScriptMgr, ACE_Null_Mutex>::instance()
 
@@ -1469,7 +1483,12 @@ class ScriptMgr
 
     public: /* SpellSC */ 
  
-        void OnCalcMaxDuration(Aura const* aura, int32& maxDuration); 
+        void OnCalcMaxDuration(Aura const* aura, int32& maxDuration);
+
+    public: /* GameEventScript */
+
+        void OnGameEventStart(uint16 EventID);
+        void OnGameEventStop(uint16 EventID);
 
     private: