16     ui(new Ui::MainWindow)

    16     ui(new Ui::MainWindow)

    17 {

    17 {

    18     this->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Ignored);

    18     this->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Ignored);

    19     ui->setupUi(this);

    19     ui->setupUi(this);

    20     mPacState = 0;

    20     mPacState = 0;

    22     xAxis = yAxis = 0;

    21     xAxis = yAxis = 0;

    23     mLastPt.setX(0);

    22     mLastPt.setX(0);

    24     mLastPt.setY(0);

    23     mLastPt.setY(0);

    25     mPause = false;

    24     mPause = false;

    26 

    25 

    42     int width = screenSize.width();

    41     int width = screenSize.width();

    43     mazeImage = mazeImage.scaledToWidth(width);

    42     mazeImage = mazeImage.scaledToWidth(width);

    44     QGraphicsPixmapItem *backGround = mScene->addPixmap(mazeImage);

    43     QGraphicsPixmapItem *backGround = mScene->addPixmap(mazeImage);

    45     backGround->setPos(-140,-200);

    44     backGround->setPos(-140,-200);

    46 

    45 

    47     mPacman = new QGraphicsEllipseItem(0, 0, 18, 18);

    50     mPacman = new QGraphicsEllipseItem(0, 0, 18, 18);

    48     mPacman->setBrush(QBrush(Qt::yellow));

    51     mPacman->setBrush(QBrush(Qt::yellow));

    49     mPacman->setSpanAngle(4500);

    52     mPacman->setSpanAngle(4500);

    50     mScene->addItem(mPacman);

    53     mScene->addItem(mPacman);

    51 

    56 

    52     // lets place a pause button in the view

    57     // lets place a pause button in the view

    53     pauseButton = new QPushButton("Pause");

    58     pauseButton = new QPushButton("Pause");

    54     connect(pauseButton, SIGNAL(clicked()), this, SLOT(pause()));

    59     connect(pauseButton, SIGNAL(clicked()), this, SLOT(pause()));

    55     pauseButton->setMaximumHeight(40);

    60     pauseButton->setMaximumHeight(40);

    58 

    63 

    59     ui->mainGraphicsView->setScene(mScene);

    64     ui->mainGraphicsView->setScene(mScene);

    60     ui->mainGraphicsView->show();

    65     ui->mainGraphicsView->show();

    61 

    66 

    62     mPacman->setPos(20,-8);

    67     mPacman->setPos(20,-8);

    64     // declare our update timer

    69     // declare our update timer

    65     mUpdateTimer = new QTimer(this);

    70     mUpdateTimer = new QTimer(this);

    66     connect(mUpdateTimer, SIGNAL(timeout()), this, SLOT(updateGraphics()));

    71     connect(mUpdateTimer, SIGNAL(timeout()), this, SLOT(updateGraphics()));

    67     mUpdateTimer->start(250);

    72     mUpdateTimer->start(250);

    68 

    73 

    69     // connect the accelerometer to the readingChanged signal

    74     // connect the accelerometer to the readingChanged signal

    70     connect(mAccelerometer, SIGNAL(readingChanged()), this, SLOT(updateReading()));

    75     connect(mAccelerometer, SIGNAL(readingChanged()), this, SLOT(updateReading()));

    71     mNumHits = 1;

    76     mNumHits = 1;

    72 }

    78 }

    73 

    79 

    74 MainWindow::~MainWindow()

    80 MainWindow::~MainWindow()

    75 {

    81 {

    76     delete ui;

    82     delete ui;

    78 

    84 

    79 void MainWindow::updateGraphics() {

    85 void MainWindow::updateGraphics() {

    80     if (mPause)

    86     if (mPause)

    81         return;

    87         return;

    82 

    88 

    85     // update the pacman mouth state

    90     // update the pacman mouth state

    86     // will eventually change this to a graphic

    91     // will eventually change this to a graphic

    87     switch (mPacState) {

    92     switch (mPacState) {

    88     case 0:

    93     case 0:

    89         mPacman->setSpanAngle(5700);

    94         mPacman->setSpanAngle(5700);

    99     }

   104     }

   100 

   105 

   101     mPacState += 1;

   106     mPacState += 1;

   102     if (mPacState == 2)

   107     if (mPacState == 2)

   103         mPacState = 0;

   108         mPacState = 0;

   104 }

   110 }

   105 

   111 

   106 void MainWindow::updateReading() {

   112 void MainWindow::updateReading() {

   107     if (mPause)

   113     if (mPause)

   108         return;

   114         return;

   112     xAxis = (xAxis + mAccelerometer->reading()->x()) / 2;

   117     xAxis = (xAxis + mAccelerometer->reading()->x()) / 2;

   113     yAxis = (yAxis + mAccelerometer->reading()->y()) / 2;

   118     yAxis = (yAxis + mAccelerometer->reading()->y()) / 2;

   114 

   119 

   116 

   129 

   117     pt.setX(pt.x()-xAxis);

   130     pt.setX(pt.x()-xAxis);

   119 

   132 

   120     if (pt.x()<-103)

   133     if (pt.x()<-103)

   121         pt.setX(-103);

   134         pt.setX(-103);

   122     else if (pt.x()>180)

   135     else if (pt.x()>180)

   123         pt.setX(180);

   136         pt.setX(180);

   125     if (pt.y()<-156)

   138     if (pt.y()<-156)

   126         pt.setY(-156);

   139         pt.setY(-156);

   127     else if (pt.y()>145)

   140     else if (pt.y()>145)

   128         pt.setY(145);

   141         pt.setY(145);

   129 

   142 

   135 

   152 

   136 }

   153 }

   137 

   154 

   138 void MainWindow::pause() {

   155 void MainWindow::pause() {

   139     mPause = !mPause;

   156     mPause = !mPause;