Core/Scripts: Fixed calling UnitScript hooks

Closes #16543

(cherry picked from commit f809e5e)

src/server/game/Scripting/ScriptMgr.cpp

@@ -37,7 +37,6 @@
 
 // namespace
 // {
-    UnusedScriptContainer UnusedScripts;
     UnusedScriptNamesContainer UnusedScriptNames;
 // }
 
@@ -107,8 +106,9 @@ class ScriptRegistry
         // The actual list of scripts. This will be accessed concurrently, so it must not be modified
         // after server startup.
         static ScriptMap ScriptPointerList;
+        static std::vector<TScript*> Scripts;
 
-        static void AddScript(TScript* const script)
+        static void AddScript(TScript* const script, bool addToDeleteContainer = true)
         {
             ASSERT(script);
 
@@ -126,6 +126,8 @@ class ScriptRegistry
             }
 
             AddScript(is_script_database_bound<TScript>{}, script);
+            if (addToDeleteContainer)
+                Scripts.push_back(script);
         }
 
         // Gets a script by its ID (assigned by ObjectMgr).
@@ -186,11 +188,6 @@ class ScriptRegistry
             {
                 // The script uses a script name from database, but isn't assigned to anything.
                 TC_LOG_ERROR("sql.sql", "Script named '%s' does not have a script name assigned in database.", script->GetName().c_str());
-
-                // Avoid calling "delete script;" because we are currently in the script constructor
-                // In a valid scenario this will not happen because every script has a name assigned in the database
-                UnusedScripts.push_back(script);
-                return;
             }
         }
 
@@ -210,6 +207,7 @@ class ScriptRegistry
 #define SCR_REG_MAP(T) ScriptRegistry<T>::ScriptMap
 #define SCR_REG_ITR(T) ScriptRegistry<T>::ScriptMapIterator
 #define SCR_REG_LST(T) ScriptRegistry<T>::ScriptPointerList
+#define SCR_REG_VEC(T) ScriptRegistry<T>::Scripts
 
 // Utility macros for looping over scripts.
 #define FOR_SCRIPTS(T, C, E) \
@@ -266,17 +264,15 @@ void ScriptMgr::Initialize()
     }
 #endif
 
-    UnloadUnusedScripts();
-
     TC_LOG_INFO("server.loading", ">> Loaded %u C++ scripts in %u ms", GetScriptCount(), GetMSTimeDiffToNow(oldMSTime));
 }
 
 void ScriptMgr::Unload()
 {
     #define SCR_CLEAR(T) \
-        for (SCR_REG_ITR(T) itr = SCR_REG_LST(T).begin(); itr != SCR_REG_LST(T).end(); ++itr) \
-            delete itr->second; \
-        SCR_REG_LST(T).clear();
+        for (T* scr : SCR_REG_VEC(T)) \
+            delete scr; \
+        SCR_REG_VEC(T).clear();
 
     // Clear scripts for every script type.
     SCR_CLEAR(SpellScriptLoader);
@@ -308,19 +304,10 @@ void ScriptMgr::Unload()
 
     #undef SCR_CLEAR
 
-    UnloadUnusedScripts();
-
     delete[] SpellSummary;
     delete[] UnitAI::AISpellInfo;
 }
 
-void ScriptMgr::UnloadUnusedScripts()
-{
-    for (size_t i = 0; i < UnusedScripts.size(); ++i)
-        delete UnusedScripts[i];
-    UnusedScripts.clear();
-}
-
 void ScriptMgr::LoadDatabase()
 {
     sScriptSystemMgr->LoadScriptWaypoints();
@@ -1555,8 +1542,7 @@ FormulaScript::FormulaScript(const char* name)
 UnitScript::UnitScript(const char* name, bool addToScripts)
     : ScriptObject(name)
 {
-    if (addToScripts)
-        ScriptRegistry<UnitScript>::AddScript(this);
+    ScriptRegistry<UnitScript>::AddScript(this, addToScripts);
 }
 
 WorldMapScript::WorldMapScript(const char* name, uint32 mapId)
@@ -1696,6 +1682,7 @@ GroupScript::GroupScript(const char* name)
 
 // Instantiate static members of ScriptRegistry.
 template<class TScript> std::map<uint32, TScript*> ScriptRegistry<TScript>::ScriptPointerList;
+template<class TScript> std::vector<TScript*> ScriptRegistry<TScript>::Scripts;
 template<class TScript> uint32 ScriptRegistry<TScript>::_scriptIdCounter = 0;
 
 // Specialize for each script type class like so:

src/server/game/Scripting/ScriptMgr.h

@@ -843,10 +843,7 @@ class GroupScript : public ScriptObject
 
 // namespace
 // {
-    typedef std::vector<ScriptObject*> UnusedScriptContainer;
     typedef std::list<std::string> UnusedScriptNamesContainer;
-
-    extern UnusedScriptContainer UnusedScripts;
     extern UnusedScriptNamesContainer UnusedScriptNames;
 // }
 
@@ -878,7 +875,6 @@ class ScriptMgr
     public: /* Unloading */
 
         void Unload();
-        void UnloadUnusedScripts();
 
     public: /* SpellScriptLoader */