git.maemo.org Git - impuzzle/blob - src/gameview.cpp

   1 /*
   2   Image Puzzle - A set your pieces straight game
   3   Copyright (C) 2009  Timo Härkönen
   4
   5   This program is free software: you can redistribute it and/or modify
   6   it under the terms of the GNU General Public License as published by
   7   the Free Software Foundation, either version 3 of the License, or
   8   (at your option) any later version.
   9
  10   This program is distributed in the hope that it will be useful,
  11   but WITHOUT ANY WARRANTY; without even the implied warranty of
  12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13   GNU General Public License for more details.
  14
  15   You should have received a copy of the GNU General Public License
  16   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #include "gameview.h"
  20 #include "puzzleitem.h"
  21 #include "defines.h"
  22 #include "introitem.h"
  23 #include "imageimporter.h"
  24 #include "settings.h"
  25
  26 #include <QGraphicsScene>
  27 #include <QDateTime>
  28 #include <QTimer>
  29 #include <QPropertyAnimation>
  30 #include <QParallelAnimationGroup>
  31 #include <QFont>
  32 #include <QMessageBox>
  33 #include <QFile>
  34 #include <QDir>
  35 #include <QTextStream>
  36 #include <QCloseEvent>
  37 #include <QFileInfo>
  38 #include <QDateTime>
  39 #include <QTimer>
  40 #include <QApplication>
  41 #include <QDateTime>
  42
  43 #ifdef Q_WS_MAEMO_5
  44 #include <QMaemo5InformationBox>
  45 #endif
  46
  47 #include <QDebug>
  48
  49 GameView *GameView::instance_ = 0;
  50
  51 GameView::GameView(QWidget *parent) :
  52         QGraphicsView(parent)
  53 {
  54     setBackgroundBrush(Qt::black);
  55     qsrand(QDateTime::currentDateTime().toTime_t());
  56     scene_ = new QGraphicsScene;
  57     hiddenIndex_ = -1;
  58     setScene(scene_);
  59
  60     introItem_ = new IntroItem;
  61     introItem_->setText("- ImPuzzle -");
  62
  63     verticalStep_ = 0;
  64     horizontalStep_ = 0;
  65
  66     qsrand(QDateTime::currentDateTime().toTime_t());
  67
  68     if(QFile::exists(QString("%1/%2/%3")
  69                     .arg(QDir::homePath()).arg(HOME_DIRECTORY).arg(RESTORE_FILE))) {
  70         if(!restoreGame()) {
  71             setPieces(ImageImporter::instance()->newPieces(Settings::instance()->image(), Settings::instance()->pieceCount()));
  72             PuzzleItem::setMoveCount(0);
  73         }
  74         else {
  75             QTimer::singleShot(0, this, SIGNAL(gameRestored()));
  76         }
  77     }
  78     else {
  79         scene_->addItem(introItem_);
  80     }
  81 }
  82
  83 GameView *GameView::instance()
  84 {
  85     if(!instance_) {
  86         instance_ = new GameView;
  87     }
  88
  89     return instance_;
  90 }
  91
  92 QList<PuzzleItem *> GameView::pieces() const
  93 {
  94     return pieces_;
  95 }
  96
  97 void GameView::setPieces(const QList<PuzzleItem *> pieces, bool shuffle)
  98 {
  99     if(pieces.isEmpty()) {
 100         qDebug() << "Empty list @ GameView::setPieces";
 101         return;
 102     }
 103
 104     QList<QGraphicsItem *> previousItems = scene_->items();
 105     if(!previousItems.isEmpty()) {
 106         foreach(QGraphicsItem *item, previousItems) {
 107             scene_->removeItem(item);
 108         }
 109     }
 110
 111     pieces_ = pieces;
 112
 113     int horizontalCount = 0;
 114
 115     // Find out board size
 116     if(pieces_.count() == EASY_PIECE_COUNT) {
 117         horizontalCount = EASY_HORIZONTAL_COUNT;
 118     }
 119     else if(pieces_.count() == HARD_PIECE_COUNT) {
 120         horizontalCount = HARD_HORIZONTAL_COUNT;
 121     }
 122     else {
 123         qDebug() << "Invalid piece count @ GameView::setPieces";
 124         qDebug() << QString("Count was %1").arg(pieces_.count());
 125         return;
 126     }
 127
 128     int verticalCount = pieces_.count() / horizontalCount;
 129     horizontalStep_ = IMAGE_WIDTH / horizontalCount + 5;
 130     verticalStep_ = IMAGE_HEIGHT / verticalCount + 5;
 131
 132     int pieceNumber = 0;
 133
 134     // Set pieces to their correct positions
 135     for(int i = 0; i < verticalCount; ++i) {
 136         for(int j = 0; j < horizontalCount; ++j) {
 137             scene_->addItem(pieces_.at(pieceNumber));
 138             QPointF point(j * horizontalStep_, i * verticalStep_);
 139             pieces_.at(pieceNumber)->setPos(point);
 140             pieces_.at(pieceNumber)->setCorrectPlace(point);
 141             pieces_.at(pieceNumber)->setCurrentPlace(point);
 142             pieces_.at(pieceNumber)->setDrawNumber(true);
 143             pieceNumber++;
 144         }
 145     }
 146
 147     // Wait and shuffle if desired
 148     if(shuffle) {
 149         QTimer::singleShot(750, this, SLOT(shufflePieces()));
 150     }
 151 }
 152
 153 void GameView::shufflePieces()
 154 {
 155     if(pieces_.isEmpty()) {
 156         qDebug() << "Empty list @ GameView::shufflePieces";
 157         return;
 158     }
 159
 160     // Give pieces ramdom locations
 161     hiddenIndex_ = qrand() % pieces_.count();
 162     emptyPlace_ = pieces_.at(hiddenIndex_)->currentPlace();
 163
 164     QPointF topLeft = pieces_.at(0)->correctPlace();
 165     QPointF bottomRight = pieces_.last()->correctPlace();
 166
 167     for(int i = 0; i < pieces_.count() * 10; ++i) {
 168         int rand = qrand() % 4;
 169
 170         switch(rand) {
 171         // up
 172         case 0:
 173             if(pieces_.at(hiddenIndex_)->currentPlace().y() > topLeft.y()) {
 174                 QPointF tmp = pieces_.at(hiddenIndex_)->currentPlace();
 175                 PuzzleItem *item = dynamic_cast<PuzzleItem *>(scene()->itemAt(tmp + QPointF(0, -verticalStep_)));
 176                 emptyPlace_ = item->currentPlace();
 177                 pieces_.at(hiddenIndex_)->setCurrentPlace(item->currentPlace());
 178                 item->setCurrentPlace(tmp);
 179             }
 180             break;
 181         // down
 182         case 1:
 183             if(pieces_.at(hiddenIndex_)->currentPlace().y() < bottomRight.y()) {
 184                 QPointF tmp = pieces_.at(hiddenIndex_)->currentPlace();
 185                 PuzzleItem *item = dynamic_cast<PuzzleItem *>(scene()->itemAt(tmp + QPointF(0, verticalStep_)));
 186                 emptyPlace_ = item->currentPlace();
 187                 pieces_.at(hiddenIndex_)->setCurrentPlace(item->currentPlace());
 188                 item->setCurrentPlace(tmp);
 189             }
 190             break;
 191         // left
 192         case 2:
 193             if(pieces_.at(hiddenIndex_)->currentPlace().x() > topLeft.x()) {
 194                 QPointF tmp = pieces_.at(hiddenIndex_)->currentPlace();
 195                 PuzzleItem *item = dynamic_cast<PuzzleItem *>(scene()->itemAt(tmp + QPointF(-horizontalStep_, 0)));
 196                 emptyPlace_ = item->currentPlace();
 197                 pieces_.at(hiddenIndex_)->setCurrentPlace(item->currentPlace());
 198                 item->setCurrentPlace(tmp);
 199             }
 200             break;
 201         // right
 202         case 3:
 203             if(pieces_.at(hiddenIndex_)->currentPlace().x() < bottomRight.x()) {
 204                 QPointF tmp = pieces_.at(hiddenIndex_)->currentPlace();
 205                 PuzzleItem *item = dynamic_cast<PuzzleItem *>(scene()->itemAt(tmp + QPointF(horizontalStep_, 0)));
 206                 emptyPlace_ = item->currentPlace();
 207                 pieces_.at(hiddenIndex_)->setCurrentPlace(item->currentPlace());
 208                 item->setCurrentPlace(tmp);
 209             }
 210             break;
 211         default:
 212             qDebug() << "WTF?";
 213             break;
 214         }
 215     }
 216
 217     QParallelAnimationGroup *animationGroup = new QParallelAnimationGroup(this);
 218     for(int i = 0; i < pieces_.count(); ++i) {
 219         QPropertyAnimation *animation = new QPropertyAnimation(pieces_.at(i), "pos");
 220         animation->setStartValue(pieces_.at(i)->correctPlace());
 221         animation->setEndValue(pieces_.at(i)->currentPlace());
 222         animation->setDuration(750);
 223         animation->setEasingCurve(QEasingCurve::InOutCirc);
 224         animationGroup->addAnimation(animation);
 225     }
 226     animationGroup->start();
 227
 228     // Hide
 229     pieces_.at(hiddenIndex_)->hide();
 230
 231     setMovingPieces();
 232 }
 233
 234 QPointF GameView::emptyPlace()
 235 {
 236     return emptyPlace_;
 237 }
 238
 239 void GameView::setEmptyPlace(const QPointF &place)
 240 {
 241     emptyPlace_ = place;
 242 }
 243
 244 bool GameView::areAllPiecesOk()
 245 {
 246     for(int i = 0; i < pieces_.count(); ++i) {
 247         // Skip hidden piece
 248         if(i == hiddenIndex_) {
 249             continue;
 250         }
 251         // Id piece is not in it's place
 252         else if(pieces_.at(i)->correctPlace() != pieces_.at(i)->currentPlace()) {
 253             return false;
 254         }
 255     }
 256     // Show hidden piece and move it to it's place
 257     pieces_.at(hiddenIndex_)->show();
 258     pieces_.at(hiddenIndex_)->moveMeTo(emptyPlace_);
 259
 260     // Set all pieces not movable and hide numbers
 261     for(int i = 0; i < pieces_.count(); ++i) {
 262         pieces_.at(i)->setMovable(false);
 263         pieces_.at(i)->setDrawNumber(false);
 264     }
 265
 266     // Show dialog with move count
 267     QMessageBox::about(const_cast<GameView *>(this), tr("You won"), QString("Puzzle completed with %1 moves").arg(PuzzleItem::moveCount()));
 268     emit gameWon();
 269
 270     return true;
 271 }
 272
 273 void GameView::setMovingPieces()
 274 {
 275     if(pieces_.isEmpty()) {
 276         qDebug() << "Empty list @ GameView::setMovingPieces";
 277         return;
 278     }
 279
 280     QPointF point = QPointF();
 281     for(int i = 0; i < pieces_.count(); ++i) {
 282         point = pieces_.at(i)->currentPlace();
 283
 284         // Is piece on the left side of the empty space
 285         if(emptyPlace_.y() == point.y() && point.x() + horizontalStep_ == emptyPlace_.x()) {
 286             pieces_.at(i)->setMovable(true);
 287         }
 288
 289         // Is piece on the right side of the empty space
 290         else if(emptyPlace_.y() == point.y() && point.x() - horizontalStep_ == emptyPlace_.x()) {
 291             pieces_.at(i)->setMovable(true);
 292         }
 293
 294         // Is piece below the empty space
 295         else if(emptyPlace_.x() == point.x() && point.y() - verticalStep_ == emptyPlace_.y()) {
 296             pieces_.at(i)->setMovable(true);
 297         }
 298
 299         // Is piece on top of the empty space
 300         else if(emptyPlace_.x() == point.x() && point.y() + verticalStep_ == emptyPlace_.y()) {
 301             pieces_.at(i)->setMovable(true);
 302         }
 303
 304         // The piece is somewhere else
 305         else {
 306             pieces_.at(i)->setMovable(false);
 307         }
 308     }
 309 }
 310
 311 bool GameView::restoreGame()
 312 {
 313     // Read settings from file
 314     QFile file(QString("%1/%2/%3")
 315                .arg(QDir::homePath())
 316                .arg(HOME_DIRECTORY)
 317                .arg(RESTORE_FILE));
 318
 319     if(!file.open(QIODevice::ReadOnly)) {
 320         qDebug() << "Failed to open restore file for reading";
 321         return false;
 322     }
 323
 324     QTextStream in(&file);
 325
 326     QStringList list;
 327
 328     list = in.readLine().split(";;");
 329
 330     qDebug() << "restore list count: " << list.count();
 331
 332     if(!list.isEmpty()) {
 333         bool ok = false;
 334         int pieces = list.at(0).toInt(&ok);
 335         if(!ok) {
 336             return false;
 337         }
 338
 339         QString im = list.at(1);
 340         if(!QFile::exists(im) && im != "default") {
 341             return false;
 342         }
 343
 344         int moveCount = list.at(2).toInt(&ok);
 345         if(!ok) {
 346             return false;
 347         }
 348
 349         Settings::instance()->setPieceCount(pieces);
 350         PuzzleItem::setMoveCount(moveCount);
 351
 352         if(im == "default" || im.isEmpty()) {
 353             Settings::instance()->setImage(0);
 354             Settings::instance()->setImagePath("default");
 355         }
 356         else {
 357             Settings::instance()->setImagePath(im);
 358             Settings::instance()->setImage(QPixmap(im));
 359         }
 360
 361         setPieces(ImageImporter::instance()->newPieces(Settings::instance()->image(), Settings::instance()->pieceCount()), false);
 362
 363         qDebug() << "pieces_ count after restoring image: " << pieces_.count();
 364
 365         if(list.count() >= pieces_.count() + 3) {
 366             for(int j = 0; j < pieces_.count(); ++j) {
 367                 if(!list.at(j + 3).isNull()) {
 368                     QStringList points = list.at(j + 3).split("#");
 369
 370                     int x = points.at(0).toInt(&ok);
 371                     if(!ok) {
 372                         return false;
 373                     }
 374
 375                     int y = points.at(1).toInt(&ok);
 376                     if(!ok) {
 377                         return false;
 378                     }
 379
 380                     QPointF point(x, y);
 381
 382                     //qDebug() << "Setting piece " << pieces_.at(j)->pieceNumber();
 383                     //qDebug() << "x: " << point.x() << " y: " << point.y();
 384
 385                     pieces_.at(j)->setCurrentPlace(point);
 386                 }
 387                 else {
 388                     return false;
 389                 }
 390             }
 391         }
 392         else {
 393             file.close();
 394             file.remove();
 395             return false;
 396         }
 397
 398         QStringList hidden = list.last().split("#");
 399
 400         if(hidden.count() == 3) {
 401             for(int m = 0; m < pieces_.count(); ++m) {
 402                 pieces_.at(m)->setPos(pieces_.at(m)->currentPlace());
 403                 if(pieces_.at(m)->pieceNumber() == hidden.at(2).toInt()) {
 404                     //qDebug() << "Hiding piece number " << hidden;
 405                     hiddenIndex_ = m;
 406                 }
 407             }
 408
 409             setEmptyPlace(QPointF(hidden.at(0).toInt(), hidden.at(1).toInt()));
 410
 411             pieces_.at(hiddenIndex_)->setVisible(false);
 412
 413             setMovingPieces();
 414         }
 415         else {
 416             setPieces(ImageImporter::instance()->newPieces(Settings::instance()->image(), Settings::instance()->pieceCount()));
 417             file.close();
 418             file.remove();
 419             return false;
 420         }
 421     }
 422     else {
 423         qDebug() << "Invalid restore file";
 424         file.close();
 425         file.remove();
 426         return false;
 427     }
 428
 429     QFileInfo fileInfo(file);
 430
 431     QDateTime created = fileInfo.created();
 432     QString infoTxt = QString("Restored game state from %1")
 433                       .arg(created.toString(Qt::TextDate));
 434
 435 #ifdef Q_WS_MAEMO_5
 436     QMaemo5InformationBox::information(this, infoTxt);
 437 #endif
 438
 439     file.close();
 440     file.remove();
 441
 442     return true;
 443 }
 444
 445 void GameView::saveGame()
 446 {
 447     if(pieces_.isEmpty() || pieces_.count() < EASY_PIECE_COUNT) {
 448         return;
 449     }
 450
 451     QDir dir;
 452     if(!dir.exists(QString("%1/%2")
 453                     .arg(QDir::homePath())
 454                     .arg(HOME_DIRECTORY))) {
 455         dir.mkpath(QString("%1/%2")
 456                    .arg(QDir::homePath())
 457                    .arg(HOME_DIRECTORY));
 458     }
 459
 460     QFile file(QString("%1/%2/%3")
 461                .arg(QDir::homePath())
 462                .arg(HOME_DIRECTORY)
 463                .arg(RESTORE_FILE));
 464
 465     if(!file.open(QIODevice::WriteOnly)) {
 466         qDebug() << "Failed to open restore file for writing";
 467         return;
 468     }
 469
 470     QTextStream out(&file);
 471
 472     out << Settings::instance()->pieceCount();
 473     out << QString(";;");
 474     if(Settings::instance()->imagePath().isEmpty()) {
 475         out << QString("default");
 476     }
 477     else {
 478         out << Settings::instance()->imagePath();
 479     }
 480     out << QString(";;");
 481     out << PuzzleItem::moveCount();
 482     out << QString(";;");
 483
 484     // piece positions
 485     int number = 0;
 486     int hiddenNo = 0;
 487
 488     while(number != pieces_.count()) {
 489         for(int i = 0; i < pieces_.count(); ++i) {
 490             if(pieces_.at(i)->pieceNumber() == number + 1) {
 491                 out << pieces_.at(i)->currentPlace().x();
 492                 out << QString("#");
 493                 out << pieces_.at(i)->currentPlace().y();
 494                 out << QString(";;");
 495                 pieces_.at(i)->pieceNumber();
 496                 if(!pieces_.at(i)->isVisible()) {
 497                     hiddenNo = number + 1;
 498                 }
 499                 number++;
 500                 break;
 501             }
 502         }
 503     }
 504
 505     out << QString("%1#%2#%3").arg(emptyPlace().x()).arg(emptyPlace().y()).arg(hiddenNo);
 506
 507     out << "\n";
 508
 509     file.close();
 510
 511     qApp->quit();
 512 }
 513
 514 void GameView::closeEvent(QCloseEvent *event)
 515 {
 516     int answer = QMessageBox::question(this, tr("Save game status?"),
 517                                        tr("Saved status will be automatically loaded when you start the application next time"),
 518                                        QMessageBox::Yes, QMessageBox::No);
 519
 520     if(answer == QMessageBox::Yes) {
 521         saveGame();
 522     }
 523
 524     event->accept();
 525 }
 526
 527 int GameView::correctPlaces() const
 528 {
 529     int c = 0;
 530
 531     for(int i = 0; i < pieces_.count(); ++i) {
 532         if(pieces_.at(i)->currentPlace() == pieces_.at(i)->correctPlace()) {
 533             c++;
 534         }
 535     }
 536
 537     return c;
 538 }
 539
 540 QList<int> GameView::movingPlaces() const
 541 {
 542     QList<int> m;
 543
 544     for(int i = 0; i < pieces_.count(); ++i) {
 545         if(pieces_.at(i)->movable()) {
 546             m.append(i);
 547         }
 548     }
 549
 550     return m;
 551 }