Honor Gambler!

/* Honor Gamble script Created by yvoms 5-11-2014
   This is just a very simple gamble script where an user inputs an amount of honor and has chance on doubling the amount.
 */
#pragma warning(disable:4146)
#define HONOR 43308

class gamble_npc : public CreatureScript
{
public:
    gamble_npc() : CreatureScript("gamble_npc") { }

    bool OnGossipHello(Player * player, Creature * creature)
    {

        player->ADD_GOSSIP_ITEM_EXTENDED(3, "I want to play!", GOSSIP_SENDER_MAIN, HONOR, "Insert amount of Honor", 0, true);
        player->ADD_GOSSIP_ITEM(3, "How does this Game work?", GOSSIP_SENDER_MAIN, 0);
        player->SEND_GOSSIP_MENU(DEFAULT_GOSSIP_MESSAGE, creature->GetGUID());
        return true;
    }

    bool OnGossipSelect(Player * player, Creature * creature, uint32 sender, uint32 uiAction)
    {
        player->PlayerTalkClass->ClearMenus();

        if(uiAction == 0)
        {
            // Check this later on
            player->ADD_GOSSIP_ITEM(7, "Back..", GOSSIP_SENDER_MAIN, 1);
            player->SEND_GOSSIP_MENU(123432, creature->GetGUID());
        }
        else if(uiAction == 1)
        {
            OnGossipHello(player, creature);
        }
        else if(uiAction == 2)
        {
            player->CLOSE_GOSSIP_MENU();
        }
        return true;
    }

    bool OnGossipSelectCode(Player* player, Creature* creature, uint32 sender, uint32 uiAction, const char* code)
    {
        player->PlayerTalkClass->ClearMenus();
        uint32 amount = 0;
        amount = uint32(atol(code));

        if(amount < 1 || !player->HasItemCount(uiAction, amount, false))
        {
            player->GetSession()->SendNotification("Invalid amount inserted");
        }
        else
        {
            if(urand(1,2) == 1)
            {
                GiveItemAmount(player, uiAction, amount);
            }
            else
            {
                player->DestroyItemCount(uiAction, amount, true);
            }
        }
        OnGossipSelect(player, creature, sender, 0);
        return true;
    }

    // You CAN ignore this whole thing.
    bool GiveItemAmount(Player * player, uint32 itemEntry, uint32 amount)
    {
        if (amount < 0)
        {
            player->DestroyItemCount(itemEntry, -amount, true, false);
            return true;
        }
        if (amount == 0)
            amount = 1;

        uint32 noSpaceForCount = 0;

        ItemPosCountVec dest;
        uint8 msg = player->CanStoreNewItem(NULL_BAG, NULL_SLOT, dest, itemEntry, amount, &noSpaceForCount);

        if (msg != EQUIP_ERR_OK)
            amount -= noSpaceForCount;

        if (amount == 0 || dest.empty())
            return false;

        Item* item = player->StoreNewItem(dest, itemEntry, true, Item::GenerateItemRandomPropertyId(itemEntry));
        return true;
    }
};

void AddSC_gamble_npc()
{
    new gamble_npc();
}