/home/koen/project/wt/cvs/wt/examples/hangman/HangmanWidget.C

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00001 /*
00002  * Copyright (C) 2005 Wim Dumon
00003  *
00004  * See the LICENSE file for terms of use.
00005  */
00006 
00007 #include "HangmanWidget.h"
00008 
00009 #include <WBreak>
00010 #include <WCssDecorationStyle>
00011 #include <WTable>
00012 #include <WText>
00013 #include <WTableCell>
00014 #include <WLineEdit>
00015 #include <WPushButton>
00016 #include <WImage>
00017 #include <WSignalMapper>
00018 #include <boost/lexical_cast.hpp>
00019 
00020 #include "Dictionary.h"
00021 #include "HangmanDb.h"
00022 
00023 HangmanWidget::HangmanWidget(std::wstring user, Dictionary dict,
00024                              WContainerWidget *parent):
00025    WContainerWidget(parent),
00026    MaxGuesses(9),
00027    User(user),
00028    Dict(dict)
00029 {
00030    setContentAlignment(AlignCenter);
00031 
00032    Title = new WText(L"Guess the word!", this);
00033    Title->decorationStyle().font().setSize(WFont::XLarge);
00034 
00035    WordContainer = new WContainerWidget(this);
00036    WordContainer->setMargin(20, Top | Bottom);
00037    WordContainer->setContentAlignment(AlignCenter);
00038    WCssDecorationStyle& style = WordContainer->decorationStyle();
00039    style.setBorder(WBorder(WBorder::Solid));
00040    style.font().setFamily(WFont::Monospace, L"courier");
00041    style.font().setSize(WFont::XXLarge);
00042 
00043    StatusText = new WText(this);
00044    new WBreak(this);
00045    createHangmanImages(this);
00046    createAlphabet(this);
00047    new WBreak(this);
00048    NewGameButton = new WPushButton(L"New Game", this);
00049    NewGameButton->clicked.connect(SLOT(this, HangmanWidget::newGame));
00050 
00051    // prepare for first game
00052    newGame();
00053 }
00054 
00055 void HangmanWidget::createHangmanImages(WContainerWidget *parent)
00056 {
00057    for(unsigned int i = 0; i <= MaxGuesses; ++i) {
00058       std::string fname = "icons/hangman";
00059       fname += boost::lexical_cast<std::string>(i) + ".png";
00060       WImage *theImage = new WImage(fname, parent);
00061       HangmanImages.push_back(theImage);
00062 
00063       // Although not necessary, we can avoid flicker (on konqueror)
00064       // by presetting the image size.
00065       theImage->resize(256, 256);
00066    }
00067 
00068    HurrayImage = new WImage("icons/hangmanhurray.png", parent);
00069    resetImages(); // Hide all images
00070 }
00071 
00072 void HangmanWidget::createAlphabet(WContainerWidget *parent)
00073 {
00074    LetterButtonLayout = new WTable(parent);
00075 
00076    // The default width of a table is 100%...
00077    LetterButtonLayout->resize(13*30, WLength());
00078 
00079    WSignalMapper<WPushButton *> *mapper
00080      = new WSignalMapper<WPushButton *>(this);
00081 
00082    for(unsigned int i = 0; i < 26; ++i) {
00083       std::wstring c(1, 'A' + i);
00084       WPushButton *character =
00085          new WPushButton(c, LetterButtonLayout->elementAt(i / 13, i % 13));
00086       LetterButtons.push_back(character);
00087       character->resize(30, WLength());
00088       mapper->mapConnect(character->clicked, character);
00089    }
00090 
00091    mapper->mapped.connect(SLOT(this, HangmanWidget::processButton));
00092 }
00093 
00094 void HangmanWidget::newGame()
00095 {
00096    Word = RandomWord(Dict);
00097    Title->setText(L"Guess the word, " + User + L"!");
00098    NewGameButton->hide(); // don't let the player chicken out
00099 
00100    // Bring widget to initial state
00101    resetImages();
00102    resetButtons();
00103    BadGuesses = DisplayedLetters = 0;
00104    HangmanImages[0]->show();
00105 
00106    // Prepare the widgets for the new word
00107    WordContainer->clear();
00108    WordLetters.clear();
00109    for(unsigned int i = 0; i < Word.size(); ++i) {
00110       WText *c = new WText(L"-", WordContainer);
00111       WordLetters.push_back(c);
00112    }
00113 
00114    // resize appropriately so that the border nooks nice.
00115    WordContainer->resize(WLength(Word.size() * 1.5, WLength::FontEx),
00116                          WLength());
00117 
00118    StatusText->setText(L"");
00119 }
00120 
00121 void HangmanWidget::processButton(WPushButton *button)
00122 {
00123    if (!button->isEnabled())
00124      return;
00125 
00126    const wchar_t *txt = button->text().value().c_str();
00127    wchar_t c = txt[0];
00128    if(std::find(Word.begin(), Word.end(), c) != Word.end())
00129       registerCorrectGuess(c);
00130    else
00131       registerBadGuess();
00132    button->disable();
00133 }
00134 
00135 void HangmanWidget::registerBadGuess()
00136 {
00137    if(BadGuesses < MaxGuesses) {
00138       HangmanImages[BadGuesses]->hide();
00139       BadGuesses++;
00140       HangmanImages[BadGuesses]->show();
00141       if(BadGuesses == MaxGuesses) {
00142          StatusText->setText(L"You hang... <br />"
00143                              L"The correct answer was: " + Word);
00144          LetterButtonLayout->hide();
00145          NewGameButton->show();
00146          HangmanDb::addToScore(User, -10);
00147       }
00148    }
00149 }
00150 
00151 void HangmanWidget::registerCorrectGuess(wchar_t c)
00152 {
00153    for(unsigned int i = 0; i < Word.size(); ++i) {
00154       if(Word[i] == c) {
00155          DisplayedLetters++;
00156          WordLetters[i]->setText(std::wstring(1, c));
00157       }
00158    }
00159    if(DisplayedLetters == Word.size()) {
00160       StatusText->setText(L"You win!");
00161       HangmanImages[BadGuesses]->hide();
00162       HurrayImage->show();
00163       LetterButtonLayout->hide();
00164       NewGameButton->show();
00165       HangmanDb::addToScore(User, 20 - BadGuesses);
00166    }
00167 }
00168 
00169 void HangmanWidget::resetImages()
00170 {
00171     HurrayImage->hide();
00172     for(unsigned int i = 0; i < HangmanImages.size(); ++i)
00173        HangmanImages[i]->hide();
00174 }
00175 
00176 void HangmanWidget::resetButtons()
00177 {
00178    for(unsigned int i = 0; i < LetterButtons.size(); ++i) {
00179       LetterButtons[i]->enable();
00180    }
00181    LetterButtonLayout->show();
00182 }

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