inventory.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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 3 of the License, or
 * (at your option) 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, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef PARALLACTION_INVENTORY_H
#define PARALLACTION_INVENTORY_H


#include "graphics/surface.h"

namespace Parallaction {

class Parallaction;

struct InventoryItem {
    uint32      _id;            // object name (lowest 16 bits are always zero)
    uint16      _index;         // index to frame in objs file
};

struct InventoryProperties {
    uint _itemPitch;
    uint _itemWidth;
    uint _itemHeight;

    int _maxItems;

    int _itemsPerLine;
    int _maxLines;

    int _width;
    int _height;
};

#define MAKE_INVENTORY_ID(x) (((x) & 0xFFFF) << 16)

typedef int16 ItemPosition;
typedef uint16 ItemName;

class Inventory {

protected:
    uint16          _numVerbs;

    InventoryItem   *_items;
    uint16          _numItems;
    int             _maxItems;

public:
    Inventory(int maxItems, InventoryItem *verbs);
    virtual ~Inventory();

    ItemPosition addItem(ItemName name, uint32 value);
    ItemPosition addItem(ItemName item);
    void removeItem(ItemName name);
    void clear(bool keepVerbs = true);

    const InventoryItem* getItem(ItemPosition pos) const;
    ItemName getItemName(ItemPosition pos) const;

    ItemPosition findItem(ItemName name) const;

    int16   getNumItems() const { return _numItems; }
};



class InventoryRenderer {
    Parallaction    *_vm;
    InventoryProperties *_props;

    Inventory       *_inv;
    Common::Point   _pos;

    Graphics::Surface   _surf;

protected:
    void getItemRect(ItemPosition pos, Common::Rect &r);

    void drawItem(ItemPosition pos, ItemName name);
    void refresh();

public:
    InventoryRenderer(Parallaction *vm, InventoryProperties *props);
    virtual ~InventoryRenderer();

    void setInventory(Inventory *inventory);

    void showInventory();
    void hideInventory();

    ItemPosition hitTest(const Common::Point &p) const;
    void highlightItem(ItemPosition pos, byte color);
    void drawItem(ItemName name, byte *buffer, uint pitch);

    byte    *getData() { return (byte *)_surf.getPixels(); }

    void    getRect(Common::Rect &r) const;
    int16   getNumLines() const;
};

} // namespace Parallaction

#endif