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/*
* The Mana World
* Copyright (C) 2004-2010 The Mana World Development Team
*
* This file is part of The Mana World.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _SHOPITEM_H
#define _SHOPITEM_H
#include "item.h"
#include <stack>
/**
* Represents an item in a shop inventory. It can store quantity and inventory
* indices of duplicate entries in the shop as well.
*/
class ShopItem : public Item
{
public:
/**
* Constructor. Creates a new ShopItem.
*
* @param inventoryIndex the inventory index of the item
* @param id the id of the item
* @param quantity number of available copies of the item
* @param price price of the item
*/
ShopItem(int inventoryIndex, int id, int quantity, int price);
/**
* Constructor. Creates a new ShopItem. Inventory index will be set to
* -1 and quantity to 0.
*
* @param id the id of the item
* @param price price of the item
*/
ShopItem(int id, int price);
/**
* Destructor.
*/
~ShopItem();
/**
* Add a duplicate. Id and price will be taken from this item.
*
* @param inventoryIndex the inventory index of the item
* @param quantity number of available copies of the item
*/
void addDuplicate(int inventoryIndex, int quantity);
/**
* Add a duplicate. Id and price will be taken from this item.
* Needed for compatibility with ShopDuplicateItems (see) class
* documentation).
*/
void addDuplicate();
/**
* Gets the quantity of the currently topmost duplicate.
*
* @return the quantity of the currently topmost duplicate
*/
int getCurrentQuantity() const
{
return mDuplicates.empty() ? 0 : mDuplicates.top()->quantity;
}
/**
* Gets the inventory index of the currently topmost duplicate.
*
* @return the inventory index of the currently topmost duplicate
*/
int getCurrentInvIndex() const
{
return mDuplicates.empty() ? mInvIndex :
mDuplicates.top()->inventoryIndex;
}
/**
* Reduces the quantity of the topmost duplicate by the specified
* amount. Also reduces the total quantity of this DuplicateItem.
* Empty duplicates are automatically removed.
*
* If the amount is bigger than the quantity of the current topmost,
* only sell as much as possible. Returns the amount actually sold (do
* not ignore the return value!)
*
* @return the amount, that actually was sold.
*/
int sellCurrentDuplicate(int quantity);
/**
* Gets the price of the item.
*
* @return the price of the item
*/
int getPrice() const
{ return mPrice; }
/**
* Gets the display name for the item in the shop list.
*
* @return the display name for the item in the shop list
*/
const std::string &getDisplayName() const
{ return mDisplayName; }
protected:
int mPrice;
std::string mDisplayName;
/**
* Struct to keep track of duplicates.
*/
typedef struct {
int inventoryIndex;
int quantity;
} DuplicateItem;
std::stack<DuplicateItem*> mDuplicates; /** <-- Stores duplicates */
};
#endif
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