Core/Gossip: New AddMenuItem method for using DB texts

Many thanks to @Erimioa

src/server/game/AI/ScriptedAI/ScriptedGossip.h

@@ -78,7 +78,11 @@ enum eTradeskill
 // d - Action (identifys this Menu Item)
 // e - Text to be displayed in pop up box
 // f - Money value in pop up box
+// g - Coded
+// h - Menu ID from DB
+// i - Menu item ID from DB
 #define ADD_GOSSIP_ITEM(a, b, c, d)   PlayerTalkClass->GetGossipMenu().AddMenuItem(-1, a, b, c, d, "", 0)
+#define ADD_GOSSIP_ITEM_DB(h, i, c, d)   PlayerTalkClass->GetGossipMenu().AddMenuItem(h, i, c, d)
 #define ADD_GOSSIP_ITEM_EXTENDED(a, b, c, d, e, f, g)   PlayerTalkClass->GetGossipMenu().AddMenuItem(-1, a, b, c, d, e, f, g)
 
 // This fuction Sends the current menu to show to client, a - NPCTEXTID(uint32), b - npc guid(uint64)

src/server/game/Entities/Creature/GossipDef.cpp

@@ -65,6 +65,48 @@ void GossipMenu::AddMenuItem(int32 menuItemId, uint8 icon, std::string const& me
     menuItem.BoxMoney        = boxMoney;
 }
 
+/**
+ * @name AddMenuItem
+ * @brief Adds a localized gossip menu item from db by menu id and menu item id.
+ * @param menuId Gossip menu id.
+ * @param menuItemId Gossip menu item id.
+ * @param sender Identifier of the current menu.
+ * @param action Custom action given to OnGossipHello.
+ */
+void GossipMenu::AddMenuItem(uint32 menuId, uint32 menuItemId, uint32 sender, uint32 action)
+{
+    /// Find items for given menu id.
+    GossipMenuItemsMapBounds bounds = sObjectMgr->GetGossipMenuItemsMapBounds(menuId);
+    /// Return if there are none.
+    if (bounds.first == bounds.second)
+        return;
+
+    /// Iterate over each of them.
+    for (GossipMenuItemsContainer::const_iterator itr = bounds.first; itr != bounds.second; ++itr)
+    {
+        /// Find the one with the given menu item id.
+        if (itr->second.OptionIndex != menuItemId)
+            continue;
+
+        /// Store texts for localization.
+        std::string strOptionText = itr->second.OptionText;
+        std::string strBoxText = itr->second.BoxText;
+
+        /// Check need of localization.
+        if (GetLocale() > LOCALE_enUS)
+            /// Find localizations from database.
+            if (GossipMenuItemsLocale const* no = sObjectMgr->GetGossipMenuItemsLocale(MAKE_PAIR32(menuId, menuItemId)))
+            {
+                /// Translate texts if there are any.
+                ObjectMgr::GetLocaleString(no->OptionText, GetLocale(), strOptionText);
+                ObjectMgr::GetLocaleString(no->BoxText, GetLocale(), strBoxText);
+            }
+
+        /// Add menu item with existing method. Menu item id -1 is also used in ADD_GOSSIP_ITEM macro.
+        AddMenuItem(-1, itr->second.OptionIcon, strOptionText, sender, action, strBoxText, itr->second.BoxMoney, itr->second.BoxCoded);
+    }
+}
+
 void GossipMenu::AddGossipMenuItemData(uint32 menuItemId, uint32 gossipActionMenuId, uint32 gossipActionPoi)
 {
     GossipMenuItemData& itemData = _menuItemData[menuItemId];
@@ -108,6 +150,8 @@ void GossipMenu::ClearMenu()
 
 PlayerMenu::PlayerMenu(WorldSession* session) : _session(session)
 {
+    if (_session)
+        _gossipMenu.SetLocale(_session->GetSessionDbLocaleIndex());
 }
 
 PlayerMenu::~PlayerMenu()

src/server/game/Entities/Creature/GossipDef.h

@@ -163,9 +163,12 @@ class GossipMenu
         ~GossipMenu();
 
         void AddMenuItem(int32 menuItemId, uint8 icon, std::string const& message, uint32 sender, uint32 action, std::string const& boxMessage, uint32 boxMoney, bool coded = false);
+        void AddMenuItem(uint32 menuId, uint32 menuItemId, uint32 sender, uint32 action);
 
         void SetMenuId(uint32 menu_id) { _menuId = menu_id; }
         uint32 GetMenuId() const { return _menuId; }
+        void SetLocale(LocaleConstant locale) { _locale = locale; }
+        LocaleConstant GetLocale() const { return _locale; }
 
         void AddGossipMenuItemData(uint32 menuItemId, uint32 gossipActionMenuId, uint32 gossipActionPoi);
 
@@ -212,6 +215,7 @@ class GossipMenu
         GossipMenuItemContainer _menuItems;
         GossipMenuItemDataContainer _menuItemData;
         uint32 _menuId;
+        LocaleConstant _locale;
 };
 
 class QuestMenu