feat(Core/Entities): Add OnPlayerSendListInventory script hook

src/server/game/Handlers/ItemHandler.cpp

@@ -1036,6 +1036,8 @@ void WorldSession::SendListInventory(ObjectGuid vendorGuid, uint32 vendorEntry)
 {
     LOG_DEBUG("network", "WORLD: Sent SMSG_LIST_INVENTORY");
 
+    sScriptMgr->OnPlayerSendInventoryList(GetPlayer(), vendorGuid, vendorEntry);
+
     Creature* vendor = GetPlayer()->GetNPCIfCanInteractWith(vendorGuid, UNIT_NPC_FLAG_VENDOR);
     if (!vendor)
     {

src/server/game/Scripting/ScriptDefines/PlayerScript.cpp

@@ -915,6 +915,11 @@ bool ScriptMgr::OnPlayerCanResurrect(Player* player)
     CALL_ENABLED_BOOLEAN_HOOKS(PlayerScript, PLAYERHOOK_CAN_RESURRECT, !script->OnPlayerCanResurrect(player));
 }
 
+void ScriptMgr::OnPlayerSendInventoryList(Player* player, ObjectGuid vendorGuid, uint32 vendorEntry)
+{
+    CALL_ENABLED_HOOKS(PlayerScript, PLAYERHOOK_ON_SEND_INVENTORY_LIST, script->OnPlayerSendInventoryList(player, vendorGuid, vendorEntry));
+}
+
 PlayerScript::PlayerScript(const char* name, std::vector<uint16> enabledHooks)
     : ScriptObject(name, PLAYERHOOK_END)
 {

src/server/game/Scripting/ScriptDefines/PlayerScript.h

@@ -208,6 +208,7 @@ enum PlayerHook
     PLAYERHOOK_ON_BEFORE_UPDATE_SKILL,
     PLAYERHOOK_ON_UPDATE_SKILL,
     PLAYERHOOK_CAN_RESURRECT,
+    PLAYERHOOK_ON_SEND_INVENTORY_LIST,
     PLAYERHOOK_END
 };
 
@@ -782,6 +783,15 @@ class PlayerScript : public ScriptObject
      * @return true if player is authorized to resurect
      */
     virtual bool OnPlayerCanResurrect(Player* /*player*/) { return true; }
+
+    /**
+     * @brief This hook is called whenever a player interacts with a vendor, and is then shown the vendor list
+     *
+     * @param player Contains information about the Player
+     * @param vendorGuid Guid of the vendor player is interacting with
+     * @param vendorEntry Entry of the vendor player is interacting with
+     */
+    virtual void OnPlayerSendInventoryList(Player* /*player*/, ObjectGuid /*vendorGuid*/, uint32 /*vendorEntry*/) {}
 };
 
 #endif

src/server/game/Scripting/ScriptMgr.h

@@ -463,6 +463,7 @@ class ScriptMgr
     void OnPlayerBeforeUpdateSkill(Player* player, uint32 skill_id, uint32& value, uint32 max, uint32 step);
     void OnPlayerUpdateSkill(Player* player, uint32 skillId, uint32 value, uint32 max, uint32 step, uint32 newValue);
     bool OnPlayerCanResurrect(Player* player);
+    void OnPlayerSendInventoryList(Player* player, ObjectGuid vendorGuid, uint32 vendorEntry);
 
     // Anti cheat
     void AnticheatSetCanFlybyServer(Player* player, bool apply);