Core/Scripts: Add SpellSC and new hook OnCalcMaxDuration

src/server/game/Scripting/ScriptMgr.cpp

@@ -58,6 +58,7 @@ template class ScriptRegistry<AllCreatureScript>;
 template class ScriptRegistry<AllMapScript>;
 template class ScriptRegistry<MovementHandlerScript>;
 template class ScriptRegistry<BGScript>;
+template class ScriptRegistry<SpellSC>;
 
 #include "ScriptMgrMacros.h"
 
@@ -209,6 +210,7 @@ void ScriptMgr::Unload()
     SCR_CLEAR(GlobalScript);
     SCR_CLEAR(ModuleScript);
     SCR_CLEAR(BGScript);
+    SCR_CLEAR(SpellSC);
 
     #undef SCR_CLEAR
 }
@@ -279,6 +281,7 @@ void ScriptMgr::CheckIfScriptsInDatabaseExist()
                 !ScriptRegistry<PlayerScript>::GetScriptById(sid) &&
                 !ScriptRegistry<GuildScript>::GetScriptById(sid) &&
                 !ScriptRegistry<BGScript>::GetScriptById(sid) &&
+                !ScriptRegistry<SpellSC>::GetScriptById(sid) &&
                 !ScriptRegistry<GroupScript>::GetScriptById(sid))
                 sLog->outErrorDb("Script named '%s' is assigned in database, but has no code!", (*itr).c_str());
         }
@@ -1984,6 +1987,12 @@ void ScriptMgr::OnBattlegroundAddPlayer(Battleground* bg, Player* player)
     FOREACH_SCRIPT(BGScript)->OnBattlegroundAddPlayer(bg, player);
 }
 
+// SpellSC
+void ScriptMgr::OnCalcMaxDuration(Aura const* aura, int32& maxDuration)
+{
+    FOREACH_SCRIPT(SpellSC)->OnCalcMaxDuration(aura, maxDuration);
+}
+
 AllMapScript::AllMapScript(const char* name)
     : ScriptObject(name)
 {
@@ -2165,6 +2174,12 @@ BGScript::BGScript(char const* name)
     ScriptRegistry<BGScript>::AddScript(this);
 }
 
+SpellSC::SpellSC(char const* name)
+    : ScriptObject(name)
+{
+    ScriptRegistry<SpellSC>::AddScript(this);
+}
+
 ModuleScript::ModuleScript(const char* name)
     : ScriptObject(name)
 {

src/server/game/Scripting/ScriptMgr.h

@@ -1061,6 +1061,21 @@ public:
     virtual void OnBattlegroundAddPlayer(Battleground* /*bg*/, Player* /*player*/) { }
 };
 
+class SpellSC : public ScriptObject
+{
+protected:
+
+    SpellSC(const char* name);
+
+public:
+
+    bool IsDatabaseBound() const { return false; }
+
+    // Calculate max duration in applying aura 
+    virtual void OnCalcMaxDuration(Aura const* /*aura*/, int32& /*maxDuration*/) { }
+
+};
+
 // this class can be used to be extended by Modules
 // creating their own custom hooks inside module itself
 class ModuleScript : public ScriptObject
@@ -1387,6 +1402,10 @@ class ScriptMgr
         void OnBattlegroundUpdate(Battleground* bg, uint32 diff);
         void OnBattlegroundAddPlayer(Battleground* bg, Player* player);
 
+    public: /* SpellSC */ 
+ 
+        void OnCalcMaxDuration(Aura const* aura, int32& maxDuration); 
+
     private:
 
         uint32 _scriptCount;

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

@@ -815,6 +815,8 @@ int32 Aura::CalcMaxDuration(Unit* caster) const
     if (IsPassive() && !m_spellInfo->DurationEntry)
         maxDuration = -1;
 
+    sScriptMgr->OnCalcMaxDuration(this, maxDuration);
+
     // IsPermanent() checks max duration (which we are supposed to calculate here)
     if (maxDuration != -1 && modOwner)
         modOwner->ApplySpellMod(GetId(), SPELLMOD_DURATION, maxDuration);