computer.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 PELROCK_COMPUTER_H
#define PELROCK_COMPUTER_H
 
namespace Pelrock {
 
class PelrockEventManager;
 
// Book data location in ALFRED.7
static const uint32 kBookDataOffset = 0x309E0;
static const uint32 kBookDataEnd = 0x33F05;
 
// Field sizes
static const int kBookTitleSize = 55;
static const int kBookAuthorSize = 30;
static const int kBookGenreSize = 20;
 
struct LibraryBook {
    Common::StringArray title;  // 55 bytes for title
    Common::StringArray author; // 30 bytes for author
    Common::String genre;       // 20 bytes for genre
    byte inventoryIndex;
    byte shelf;     // 1-3 for row number
    bool available; // true = can be found on shelf, false = catalog only
};
 
class Computer {
public:
    Computer(PelrockEventManager *eventMan);
    ~Computer();
 
    int run();
    Common::String _memorizedMsg; // "Bueno... Tendre que buscar en la estanteria de la %c"
 
private:
    enum ComputerState {
        STATE_MAIN_MENU,
        STATE_SEARCH_BY_TITLE,
        STATE_SEARCH_BY_AUTHOR,
        STATE_SHOW_RESULTS,
        STATE_EXIT
    };
 
    PelrockEventManager *_events = nullptr;
    Graphics::ManagedSurface _backgroundScreen;
    byte *_palette = nullptr;
 
    // State variables
    ComputerState _state;
    char _searchLetter = ' ';
    int _searchType = 0; // 0 = title, 1 = author
    Common::Array<int> _searchResults;
    Common::Array<LibraryBook> _libraryBooks;
    uint _currentResult;
    int _memorizedBookIndex; // Index of book that was memorized (-1 if none)
    int _lineHeight = 0;
    Common::String _titleMsg;
    Common::String _authorMsg;
 
    Common::Array<Common::StringArray> _computerText;
 
    void loadBackground();
    void cleanup();
    void handleMainMenu();
    void handleSearchInput();
    void handleResultsDisplay();
    void performSearch();
    void drawScreen();
    void memorizeBook(int bookIndex);
    void init();
};
 
} // End of namespace Pelrock
 
#endif