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!

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

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

   int GetItemIcon(Eluna* E)
   {
       uint32 entry = E->CHECKVAL(1);
       uint8 locale = E->CHECKVAL(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;
   }

    

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

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

    

1. Update Line 118 to:

   DBCStorage sItemDisplayInfoStore(ItemDisplayTemplateEntryfmt);

    

1. Update Line 148 to:

   extern DBCStorage sItemDisplayInfoStore;

    

1. 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
   };

    

1. 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.