inventory.cpp

///inventory.cpp
#include "inventory.h"
#include <iostream>



Inventory::Inventory():weapon_slot(1,"Bare Fists",0),armor_slot(0,"Bare Chest",0)
{
max_inventory_space = 10;
number_of_items = 0;

}



void Inventory::add_item(Item& item,int mode_of_operation)
{
    ///function called mainly when adding items to inventory, but is also a part of swapping items explained in function swap_item()
if (mode_of_operation == 1){
    ///this mode of operation is used when swapping objects and used only
    ///when called by swap_item() function
    std::unique_ptr<Item> ptr(&item);
    Inventory_array[10] = std::move(ptr);
    }
else{
    ///this mode of operation is used when adding object
    if (number_of_items < max_inventory_space)
    {   
    ///using ptr(new Item(&item)) creates an error
        std::unique_ptr<Item> ptr(&item);
        Inventory_array[number_of_items] = std::move(ptr);
        number_of_items += 1;
        
    }
    else{std::cout<<"Inventory is full"<<std::endl;}
}}
void Inventory::remove_item(int item_number)
{
    ///function for removing items
if (number_of_items < item_number){std::cout<<"Invalid item number"<<std::endl;} 
else if(number_of_items <= 0){std::cout<<"Out of range"<<std::endl;}
else
{
    ///at first I have tried deleting the unique_ptr, but got Critical error detected c0000374
    ///so instead I am releasing the memory it occupies, and then deleting the object by changing its value to 0
    ///if there was only one item in the inventory, or the deleted item was the last one, then 
    ///moving other items to fill the blank would not be needed, otherwise the last item from 
    ///inventory is used to fill the blank
    Inventory_array[item_number - 1].release();
    Inventory_array[item_number - 1] = 0;
    if(number_of_items > 1 and item_number != number_of_items)
    {
        Inventory_array[item_number - 1] = std::move(Inventory_array[number_of_items - 1]);
    }
    number_of_items -= 1;
}
}

void Inventory::display_inventory()
{
    ///function for displaying the inventory, it does not display Inventory_array[10] as it is used only for swapping items
    for(int i = 0; i<number_of_items; i++)
    {
        std::cout<<i + 1<<": ";
        Inventory_array[i]->display_item();
    }
    
}

void Inventory::swap_item(int item_number,std::string item_type)
{

    if (number_of_items < item_number){std::cout<<"Invalid item number"<<std::endl;} 
    else if(number_of_items <= 0){std::cout<<"Out of range"<<std::endl;}
    else
    {
        if (item_type == "armor" & Inventory_array[item_number - 1]->ID == 0)
        {   /// fuction for swapping armor_slot and weapon_slot with items from inventory
            /// all armor has id 0, and weapon id 1, this is how it checks if the exchange is valid, 
        
        ///I have tried using swap, but once again got the error Critical error detected c0000374, and nothing 
        ///I can find on the internet helps me fix it
        ///The problem is that an item inside and outside array are not treated as objects from one class, 
        Inventory::add_item(armor_slot,1);
        ///bug, swapping only works one way, as the Inventory_array[10] is updated, but Inventory_array[item_number - 1] not, it is not related to releasing Inventory_array[10]
        ///trying to fix the bug by manualy assigning values of Inventory_array[item_number - 1] does not work, as it reverses the changes made to weapon slot
        ///I do not understand how a line Inventory_array[item_number - 1]->name = placeholder_name can reverse changes made to weapon_slot, but it somehow does it
        Inventory_array[item_number - 1].swap(Inventory_array[10]);
        armor_slot.name = Inventory_array[10]->name;
        armor_slot.stat = Inventory_array[10]->stat;
        Inventory_array[10].release();
        Inventory_array[10] = 0;
        }
        else if(item_type == "weapon" & Inventory_array[item_number - 1]->ID == 1)
        {
        Inventory::add_item(weapon_slot,1);
        Inventory_array[item_number - 1].swap(Inventory_array[10]);
        weapon_slot.name = Inventory_array[10]->name;
        weapon_slot.stat = Inventory_array[10]->stat; 
        Inventory_array[10].release();
        Inventory_array[10] = 0;
        }
        
        
        
        
        
    }
}
void Inventory::inventory_menu()
{
    std::cout<<">>>INVENTORY<<<"<<std::endl;
    std::cout<<"WEAPON SLOT: ";
    weapon_slot.display_item();
    std::cout<<"ARMOR SLOT: ";
    armor_slot.display_item();
    Inventory::display_inventory();
    std::cout<<"------------------"<<std::endl;
    std::cout<<"1: REMOVE ITEM"<<std::endl;
    std::cout<<"2: EQUIP WEAPON"<<std::endl;
    std::cout<<"3: EQUIP ARMOR"<<std::endl;
    std::cout<<"4: QUIT"<<std::endl;
    std::cout<<">";
    std::cin >>player_input;
    switch(player_input)
    {
        case 1:
        std::cout<<"\nwhich item to remove?"<<std::endl<<">";
        std::cin >>player_input;
        Inventory::remove_item(player_input);
        break;
        case 2:
        std::cout<<"\nwhich weapon to equip?"<<std::endl<<">";
        std::cin >>player_input;
        Inventory::swap_item(player_input,"weapon");
        break;
        case 3:
        std::cout<<"\nwhich armor to equip?"<<std::endl<<">";
        std::cin >>player_input;
        Inventory::swap_item(player_input,"armor");
        break;
        case 4:
        break;
    }
}