NON C++ Version : https://github.com/JadaDev/LuaIconsEasy

This guide explains how to add the GetItemIcon function in LUA for TrinityCore. Credits to Rocket2 & Artamedes for their assistance!

• Open src/server/game/LuaEngine/methods/TrinityCore/GlobalMethods.h.

• Locate "GetItemLink" and add the following code after Line 400:

  int GetItemIcon(Eluna* E)
  {
      uint32 entry = E->CHECKVAL<uint32>(1);
      uint8 locale = E->CHECKVAL<uint8>(2, DEFAULT_LOCALE);
      if (locale >= TOTAL_LOCALES)
          return luaL_argerror(E->L, 2, "valid LocaleConstant expected");
  
      const ItemTemplate* temp = eObjectMgr->GetItemTemplate(entry);
      std::ostringstream ss;
      ss << "|TInterface";
  
      const ItemDisplayInfoEntry* dispInfo = NULL;
      if (temp)
      {
          dispInfo = sItemDisplayInfoStore.LookupEntry(temp->DisplayInfoID);
          if (dispInfo)
              ss << "/ICONS/" << dispInfo->InventoryIcon[0];
      }
      if (!dispInfo)
          ss << "/InventoryItems/WoWUnknownItem01";
      E->Push(ss.str());
      return 1;
  }

   

• Scroll to the bottom and add the following line after Line 3271:

  { "GetItemIcon", &LuaGlobalFunctions::GetItemIcon },

   

• Update Line 118 to:

  DBCStorage<ItemDisplayInfoEntry> sItemDisplayInfoStore(ItemDisplayTemplateEntryfmt);

   

• Update Line 148 to:

  extern DBCStorage<ItemDisplayInfoEntry> sItemDisplayInfoStore;

   

• Uncomment lines 900 to 914 to include ItemDisplayInfoEntry struct:

  struct ItemDisplayInfoEntry
  {
      uint32 ID;                                              // 0
      char const* ModelName[2];                               // 1-2
      char const* ModelTexture[2];                            // 3-4
      char const* InventoryIcon[2];                           // 5-6
      uint32 GeosetGroup[3];                                  // 7-9
      uint32 Flags;                                           // 10
      uint32 SpellVisualID;                                   // 11
      uint32 GroupSoundIndex;                                 // 12
      uint32 HelmetGeosetVisID[2];                            // 13-14
      char const* Texture[8];                                 // 15-22
      int32 ItemVisual;                                       // 23
      uint32 ParticleColorID;                                 // 24
  };

   

• Update Line 79 to:

  constexpr char ItemDisplayTemplateEntryfmt[] = "nssssssiiiiiiiissssssssii";

   

• Use GetItemIcon(ItemEntry) in LUA scripts to retrieve the item icon.
• Append ":30:30:-20:0|t" for proper display.

This guide provides detailed steps to integrate the GetItemIcon function into your TrinityCore server setup.

Link : https://github.com/JadaDev/Enable_LUA_ICON_CPP