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Viewing changes to src/race/highscore_manager.cpp

  • Committer: Bazaar Package Importer
  • Author(s): Christoph Egger
  • Date: 2011-02-24 22:36:25 UTC
  • mfrom: (1.1.9 upstream) (6.1.4 sid)
  • Revision ID: james.westby@ubuntu.com-20110224223625-ygrjfpg92obovuch
Tags: 0.7+dfsg1-1
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src/race/highscore_manager.cpp
 
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//  $Id: highscores.hpp 921 2007-02-28 05:43:34Z hiker $
 
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//
 
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//  SuperTuxKart - a fun racing game with go-kart
 
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//  Copyright (C) 2006 Joerg Henrichs
 
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//
 
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//  This program is free software; you can redistribute it and/or
 
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//  modify it under the terms of the GNU General Public License
 
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//  as published by the Free Software Foundation; either version 3
 
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//  of the License, or (at your option) any later version.
 
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//
 
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//  This program is distributed in the hope that it will be useful,
 
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//  but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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//  GNU General Public License for more details.
 
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//
 
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//  You should have received a copy of the GNU General Public License
 
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//  along with this program; if not, write to the Free Software
 
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//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
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#include "race/highscore_manager.hpp"
 
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#include <stdexcept>
 
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#include <fstream>
 
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#include "config/user_config.hpp"
 
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#include "io/file_manager.hpp"
 
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#include "race/race_manager.hpp"
 
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#include "utils/string_utils.hpp"
 
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#include "utils/translation.hpp"
 
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HighscoreManager* highscore_manager=0;
 
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HighscoreManager::HighscoreManager()
 
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{
 
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    m_can_write=true;
 
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    setFilename();
 
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    loadHighscores();
 
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}   // HighscoreManager
 
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// -----------------------------------------------------------------------------
 
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HighscoreManager::~HighscoreManager()
 
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{
 
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    saveHighscores();
 
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    for(type_all_scores::iterator i  = m_all_scores.begin(); 
 
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                                  i != m_all_scores.end();  i++)
 
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        delete *i;
 
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}   // ~HighscoreManager
 
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// -----------------------------------------------------------------------------
 
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/** Determines the path to store the highscore file in
 
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 */
 
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void HighscoreManager::setFilename()
 
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{
 
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    if ( getenv("SUPERTUXKART_HIGHSCOREDIR") != NULL )
 
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    {
 
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        m_filename = getenv("SUPERTUXKART_HIGHSCOREDIR")
 
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                   + std::string("/highscore.xml");
 
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    }
 
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    else 
 
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    {
 
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        m_filename=file_manager->getHighscoreFile("highscore.xml");
 
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    }
 
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    return;
 
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}   // SetFilename
 
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// -----------------------------------------------------------------------------
 
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void HighscoreManager::loadHighscores()
 
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{
 
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    XMLNode *root = NULL;
 
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    root = file_manager->createXMLTree(m_filename);
 
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    if(!root)
 
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    {
 
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        saveHighscores();
 
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        if(m_can_write)
 
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        {
 
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            fprintf(stderr, "New highscore file '%s' created.\n", 
 
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                    m_filename.c_str());
 
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        }
 
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        delete root;
 
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        return;
 
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    }
 
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    try
 
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    {
 
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        if(!root || root->getName()!="highscores")
 
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            throw std::runtime_error("No 'highscore' node found.");
 
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        // check file version
 
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        int v;
 
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        if (!root->get("version", &v) || v<(int)CURRENT_HSCORE_FILE_VERSION)
 
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        {
 
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            fprintf(stderr, 
 
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                    "Highscore file format too old, a new one will be created.\n");
 
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            irr::core::stringw warning = 
 
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                _("The highscore file was too old,\nall highscores have been erased.");
 
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            user_config->setWarning( warning );
 
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            // since we haven't had the chance to load the current scores yet,
 
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            // calling Save() now will generate an empty file with the right format.
 
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            saveHighscores();
 
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            return;
 
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        }
 
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        // read all entries one by one and store them in 'm_all_scores'
 
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        for(unsigned int i=0; i<root->getNumNodes(); i++)
 
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        {
 
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            const XMLNode *node = root->getNode(i);
 
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            Highscores *highscores;
 
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            try
 
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            {
 
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                highscores = new Highscores(*node);
 
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            }
 
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            catch (std::logic_error& e)
 
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            {
 
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                fprintf(stderr, "Invalid highscore entry will be skipped : %s\n", e.what());
 
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                continue;
 
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            }
 
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            m_all_scores.push_back(highscores);
 
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        }   // next entry
 
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        if(UserConfigParams::m_verbosity>=4)
 
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            fprintf(stderr, "Highscores will be saved in '%s'.\n",
 
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                    m_filename.c_str());
 
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    }
 
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    catch(std::exception& err)
 
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    {
 
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        fprintf(stderr, "Error while parsing highscore file '%s':\n", 
 
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                m_filename.c_str());
 
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        fprintf(stderr, "%s", err.what());
 
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        fprintf(stderr, "\n");
 
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        fprintf(stderr, "No old highscores will be available.\n");
 
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    }
 
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    delete root;
 
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}   // loadHighscores
 
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// -----------------------------------------------------------------------------
 
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void HighscoreManager::saveHighscores()
 
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{
 
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    // Print error message only once
 
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    if(!m_can_write) return;
 
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    try
 
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    {
 
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        std::ofstream highscore_file;
 
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        highscore_file.open(m_filename.c_str());
 
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        highscore_file << "<?xml version=\"1.0\"?>\n";
 
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        highscore_file << "<highscores version=\"" << CURRENT_HSCORE_FILE_VERSION<< "\">\n";
 
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        for(unsigned int i=0; i<m_all_scores.size(); i++)
 
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        {
 
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            m_all_scores[i]->writeEntry(highscore_file);
 
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        }
 
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        highscore_file << "</highscores>\n";
 
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        highscore_file.close();
 
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    }
 
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    catch(std::exception &e)
 
158
    {
 
159
        printf("Problems saving highscores in '%s'\n", m_filename.c_str());
 
160
        puts(e.what());
 
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        m_can_write=false;
 
162
    }
 
163
 
 
164
}   // saveHighscores
 
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166
// -----------------------------------------------------------------------------
 
167
/*
 
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 * Returns the high scores entry for a specific type of race. Creates one if none exists yet.
 
169
 */
 
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Highscores* HighscoreManager::getHighscores(const Highscores::HighscoreType highscore_type,
 
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                                            int num_karts, const RaceManager::Difficulty difficulty, 
 
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                                            const std::string trackName, const int number_of_laps)
 
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{
 
174
    Highscores *highscores = 0;
 
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176
    // See if we already have a record for this type
 
177
    for(type_all_scores::iterator i  = m_all_scores.begin(); 
 
178
                                  i != m_all_scores.end();  i++)
 
179
    {
 
180
        if((*i)->matches(highscore_type, num_karts, difficulty, trackName, number_of_laps) )
 
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        {
 
182
            // we found one entry for this kind of race, return it
 
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            return (*i);
 
184
        }
 
185
    }   // for i in m_all_scores
 
186
 
 
187
    // we don't have an entry for such a race currently. Create one.
 
188
    highscores = new Highscores(highscore_type, num_karts, difficulty, trackName, number_of_laps);
 
189
    m_all_scores.push_back(highscores);
 
190
    return highscores;
 
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}   // getHighscores