Save map instead of Map id/instance id combo.

Added function 'GetStateMap' to get the map pointer the lua state is running on.

LuaEngine.cpp

@@ -74,12 +74,11 @@ void Eluna::_ReloadEluna()
     reload = false;
 }
 
-Eluna::Eluna(int32 mapId, uint32 instanceId, bool compatMode) :
+Eluna::Eluna(Map* map, bool compatMode) :
 event_level(0),
 push_counter(0),
 enabled(false),
-boundMapId(mapId),
-boundInstanceId(instanceId),
+boundMap(map),
 compatibilityMode(compatMode),
 
 L(NULL),
@@ -235,6 +234,8 @@ void Eluna::DestroyBindStores()
 
 void Eluna::RunScripts()
 {
+    int32 const boundMapId = GetBoundMapId();
+    uint32 const boundInstanceId = GetBoundInstanceId();
     ELUNA_LOG_DEBUG("[Eluna]: Running scripts for state: %i, instance: %u", boundMapId, boundInstanceId);
 
     uint32 oldMSTime = ElunaUtil::GetCurrTime();

LuaEngine.h

@@ -36,6 +36,7 @@
 #endif
 #include "Hooks.h"
 #include "ElunaUtility.h"
+#include "Map.h"
 #include <mutex>
 #include <memory>
 
@@ -181,11 +182,7 @@ class ELUNA_GAME_API Eluna
     uint8 push_counter;
     bool enabled;
 
-    // The map id that this Eluna object is tied to. -1 is reserved for objects without a bound map id.
-    int32 boundMapId;
-
-    // The instance id that this Eluna object is tied to. -1 is reserved for objects without a bound map id.
-    uint32 boundInstanceId;
+    Map* const boundMap;
 
     // Whether or not Eluna is in compatibility mode. Used in some method wrappers.
     bool compatibilityMode;
@@ -362,11 +359,27 @@ class ELUNA_GAME_API Eluna
     InstanceData* GetInstanceData(Map* map);
     void FreeInstanceId(uint32 instanceId);
 
-    int32 GetBoundMapId() const { return boundMapId; }
-    uint32 GetBoundInstanceId() const { return boundInstanceId; }
+    Map* GetBoundMap() const { return boundMap; }
+
+    int32 GetBoundMapId() const
+    {
+        if(const Map * map = GetBoundMap())
+            return map->GetId();
+
+        return -1;
+    }
+
+    uint32 GetBoundInstanceId() const
+    {
+        if(const Map * map = GetBoundMap())
+            return map->GetInstanceId();
+
+        return 0;
+    }
+
     bool GetCompatibilityMode() const { return compatibilityMode; }
 
-    Eluna(int32 mapId, uint32 instanceId, bool compatMode = false);
+    Eluna(Map * map, bool compatMode = false);
     ~Eluna();
 
     // Prevent copy

TrinityCore/GlobalMethods.h

@@ -86,6 +86,17 @@ namespace LuaGlobalFunctions
         return 1;
     }
 
+    /**
+     * Returns the map pointer of the Lua state. Returns null for the "World" state.
+     *
+     * @return int32 mapId
+     */
+    int GetStateMap(Eluna* E)
+    {
+        E->Push(E->GetBoundMap());
+        return 1;
+    }
+
     /**
      * Returns the map ID of the Lua state. Returns -1 for the "World" state.
      *
@@ -3122,6 +3133,7 @@ namespace LuaGlobalFunctions
         { "GetRealmID", &LuaGlobalFunctions::GetRealmID },
         { "GetCoreVersion", &LuaGlobalFunctions::GetCoreVersion },
         { "GetCoreExpansion", &LuaGlobalFunctions::GetCoreExpansion },
+        { "GetStateMap", &LuaGlobalFunctions::GetStateMap, METHOD_REG_MAP },
         { "GetStateMapId", &LuaGlobalFunctions::GetStateMapId },
         { "GetStateInstanceId", &LuaGlobalFunctions::GetStateInstanceId },
         { "GetQuest", &LuaGlobalFunctions::GetQuest },