icon_list.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.
 *
 * Additional copyright for this file:
 * Copyright (C) 1999-2000 Revolution Software Ltd.
 * This code is based on source code created by Revolution Software,
 * used with permission.
 *
 * 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 ICB_ICON_LIST_H_INCLUDED
#define ICB_ICON_LIST_H_INCLUDED
 
// Include headers needed by this class.
#include "engines/icb/common/px_string.h"
#include "engines/icb/common/px_clu_api.h"
#include "engines/icb/p4.h"
#include "engines/icb/debug.h"
#include "engines/icb/string_vest.h"
 
namespace ICB {
 
extern const char *global_deleted_list;
 
// This is used as a placeholder for deleted lists to save reallocating.
#define ICON_LIST_DELETED_PLACEHOLDER global_deleted_list
 
// This defines the available values for the scope of these lists.
enum IconListScope { CURRENT_LOGIC = 0, SESSION_WIDE, MISSION_WIDE, GAME_WIDE };
 
// This defines the maximum number of icons that can be in the menu.
#define ICON_LIST_MAX_ICONS 16 // This defines an array size, so must be a multiple of 4!
 
// And this defines the maximum number that can be displayed at one time.
#define ICON_LIST_MAX_DISPLAYED 10
 
// This defines how many of each icon are allowed (only meaningful when the list is handling duplicates).
#define ICON_MAX_DUPLICATE_COUNT 99
 
// This means there is no current selection.
#define ICON_LIST_NO_SELECTION (-1)
 
// This defines the name of the 'empty' icon.
 
extern const char *iconListEmptyIcon;
#define ICON_LIST_EMPTY_ICON iconListEmptyIcon
 
// Class to manage the lists of icons used in the game.  the inventory, Remora and speech system all use these lists.
class _icon_list {
public:
    // Default constructor and destructor.
    _icon_list();
    ~_icon_list() {}
 
    // Alternative constructor, which takes the list name.
    inline _icon_list(const char *pcListName);
 
    // Copy constructor and assignment operator.
    inline _icon_list(const _icon_list &oX);
    inline const _icon_list &operator=(const _icon_list &oOpB);
 
    // This resets the list to its newly-created state.
    void Reset();
 
    // Gets and sets.
    const char *GetListName() const { return (m_pcListName); }
    void SetListName(const char *pcListName) { m_pcListName = pcListName; }
 
    uint8 GetIconCount() const { return (m_nItemCount); }
 
    IconListScope GetScope() const { return (m_eScope); }
    void SetScope(IconListScope eScope) { m_eScope = eScope; }
 
    inline const char *GetIcon(uint32 nIndex) const;
    inline uint32 GetIconHash(uint32 nIndex) const;
    uint8 GetDuplicateCount(const char *pcIconName) const;
    uint8 GetDuplicateCount(uint32 nIndex) const;
 
    void SetAbsoluteIconCount(const char *pcIconName, uint32 nCount);
 
    // This returns the index position of an icon in the list.
    int32 GetIconPosition(const char *pcIconName) const;
 
    // These add and remove items from the list.
    void AddIcon(const char *pcIconName, const uint32 nIconNameHash);
    void RemoveIcon(const char *pcIconName, bool8 bForceRemove);
 
private:
    const char *m_pcListName;                                  // The name of the list.
    IconListScope m_eScope;                                    // Scope of the list (determines when it is allowed to be destroyed).
    uint32 m_pnIconListHash[ICON_LIST_MAX_ICONS];              // The hash number of items currently in the inventory.
    uint8 m_pnDuplicateCount[ICON_LIST_MAX_ICONS];             // The list of items currently in the inventory.
    char m_ppcIconList[ICON_LIST_MAX_ICONS][MAXLEN_ICON_NAME]; // The list of items currently in the inventory.
    uint8 m_nItemCount;                                        // My own count of the number of items currently in the inventory.
    bool8 m_bAllowDuplicates;                                  // If true, a count is incremented when a duplicate is added.
    uint8 m_nPad1;
    uint8 m_nPad2;
 
    // Private functions used only in this class.
    void Clone(const _icon_list &oSource);
};
 
inline _icon_list::_icon_list(const _icon_list &oX) { Clone(oX); }
 
inline const _icon_list &_icon_list::operator=(const _icon_list &oOpB) {
    Clone(oOpB);
 
    return (*this);
}
 
inline void _icon_list::Reset() {
    memset((uint8 *)m_pnIconListHash, 0, ICON_LIST_MAX_ICONS * sizeof(uint32));
    memset((uint8 *)m_pnDuplicateCount, 0, ICON_LIST_MAX_ICONS * sizeof(uint8));
    memset((uint8 *)m_ppcIconList, 0, ICON_LIST_MAX_ICONS * MAXLEN_ICON_NAME * sizeof(char));
    m_nItemCount = 0;
}
 
inline const char *_icon_list::GetIcon(uint32 nIndex) const { return (m_ppcIconList[nIndex]); }
 
inline uint32 _icon_list::GetIconHash(uint32 nIndex) const {
    if (nIndex >= m_nItemCount) {
        Fatal_error("_icon_list::GetIconHash( %d ) called - list has %d items", nIndex, m_nItemCount);
    }
 
    return (m_pnIconListHash[nIndex]);
}
 
} // End of namespace ICB
 
#endif // #if !defined( ICON_LIST_H_INCLUDED )