C++/Qt/QFrame
Tetrix game
<source lang="cpp"> /****************************************************************************
- Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
- All rights reserved.
- Contact: Nokia Corporation (qt-info@nokia.com)
- This file is part of the examples of the Qt Toolkit.
- $QT_BEGIN_LICENSE:LGPL$
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- GNU Lesser General Public License Usage
- Alternatively, this file may be used under the terms of the GNU Lesser
- General Public License version 2.1 as published by the Free Software
- Foundation and appearing in the file LICENSE.LGPL included in the
- packaging of this file. Please review the following information to
- ensure the GNU Lesser General Public License version 2.1 requirements
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- In addition, as a special exception, Nokia gives you certain additional
- rights. These rights are described in the Nokia Qt LGPL Exception
- version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
- GNU General Public License Usage
- Alternatively, this file may be used under the terms of the GNU
- General Public License version 3.0 as published by the Free Software
- Foundation and appearing in the file LICENSE.GPL included in the
- packaging of this file. Please review the following information to
- ensure the GNU General Public License version 3.0 requirements will be
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- $QT_END_LICENSE$
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- /
- ifndef TETRIXPIECE_H
- define TETRIXPIECE_H
enum TetrixShape { NoShape, ZShape, SShape, LineShape, TShape, SquareShape,
LShape, MirroredLShape };
class TetrixPiece { public:
TetrixPiece() { setShape(NoShape); } void setRandomShape(); void setShape(TetrixShape shape); TetrixShape shape() const { return pieceShape; } int x(int index) const { return coords[index][0]; } int y(int index) const { return coords[index][1]; } int minX() const; int maxX() const; int minY() const; int maxY() const; TetrixPiece rotatedLeft() const; TetrixPiece rotatedRight() const;
private:
void setX(int index, int x) { coords[index][0] = x; } void setY(int index, int y) { coords[index][1] = y; } TetrixShape pieceShape; int coords[4][2];
};
- endif
- include <QtCore>
- include <stdlib.h>
- include "tetrixpiece.h"
void TetrixPiece::setRandomShape() {
setShape(TetrixShape(qrand() % 7 + 1));
}
void TetrixPiece::setShape(TetrixShape shape) {
static const int coordsTable[8][4][2] = { { { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 } }, { { 0, -1 }, { 0, 0 }, { -1, 0 }, { -1, 1 } }, { { 0, -1 }, { 0, 0 }, { 1, 0 }, { 1, 1 } }, { { 0, -1 }, { 0, 0 }, { 0, 1 }, { 0, 2 } }, { { -1, 0 }, { 0, 0 }, { 1, 0 }, { 0, 1 } }, { { 0, 0 }, { 1, 0 }, { 0, 1 }, { 1, 1 } }, { { -1, -1 }, { 0, -1 }, { 0, 0 }, { 0, 1 } }, { { 1, -1 }, { 0, -1 }, { 0, 0 }, { 0, 1 } } }; for (int i = 0; i < 4 ; i++) { for (int j = 0; j < 2; ++j) coords[i][j] = coordsTable[shape][i][j]; } pieceShape = shape;
}
int TetrixPiece::minX() const {
int min = coords[0][0]; for (int i = 1; i < 4; ++i) min = qMin(min, coords[i][0]); return min;
} int TetrixPiece::maxX() const
{
int max = coords[0][0]; for (int i = 1; i < 4; ++i) max = qMax(max, coords[i][0]); return max;
}
int TetrixPiece::minY() const {
int min = coords[0][1]; for (int i = 1; i < 4; ++i) min = qMin(min, coords[i][1]); return min;
} int TetrixPiece::maxY() const
{
int max = coords[0][1]; for (int i = 1; i < 4; ++i) max = qMax(max, coords[i][1]); return max;
}
TetrixPiece TetrixPiece::rotatedLeft() const {
if (pieceShape == SquareShape) return *this; TetrixPiece result; result.pieceShape = pieceShape; for (int i = 0; i < 4; ++i) { result.setX(i, y(i)); result.setY(i, -x(i)); } return result;
}
TetrixPiece TetrixPiece::rotatedRight() const {
if (pieceShape == SquareShape) return *this; TetrixPiece result; result.pieceShape = pieceShape; for (int i = 0; i < 4; ++i) { result.setX(i, -y(i)); result.setY(i, x(i)); } return result;
}
- ifndef TETRIXBOARD_H
- define TETRIXBOARD_H
- include <QBasicTimer>
- include <QFrame>
- include <QPointer>
- include "tetrixpiece.h"
QT_BEGIN_NAMESPACE class QLabel; QT_END_NAMESPACE
class TetrixBoard : public QFrame {
Q_OBJECT
public:
TetrixBoard(QWidget *parent = 0); void setNextPieceLabel(QLabel *label); QSize sizeHint() const; QSize minimumSizeHint() const;
public slots:
void start(); void pause();
signals:
void scoreChanged(int score); void levelChanged(int level); void linesRemovedChanged(int numLines);
protected:
void paintEvent(QPaintEvent *event); void keyPressEvent(QKeyEvent *event); void timerEvent(QTimerEvent *event);
private:
enum { BoardWidth = 10, BoardHeight = 22 }; TetrixShape &shapeAt(int x, int y) { return board[(y * BoardWidth) + x]; } int timeoutTime() { return 1000 / (1 + level); } int squareWidth() { return contentsRect().width() / BoardWidth; } int squareHeight() { return contentsRect().height() / BoardHeight; } void clearBoard(); void dropDown(); void oneLineDown(); void pieceDropped(int dropHeight); void removeFullLines(); void newPiece(); void showNextPiece(); bool tryMove(const TetrixPiece &newPiece, int newX, int newY); void drawSquare(QPainter &painter, int x, int y, TetrixShape shape); QBasicTimer timer; QPointer<QLabel> nextPieceLabel; bool isStarted; bool isPaused; bool isWaitingAfterLine; TetrixPiece curPiece; TetrixPiece nextPiece; int curX; int curY; int numLinesRemoved; int numPiecesDropped; int score; int level; TetrixShape board[BoardWidth * BoardHeight];
};
- endif
- include <QtGui>
- include "tetrixboard.h"
TetrixBoard::TetrixBoard(QWidget *parent)
: QFrame(parent)
{
setFrameStyle(QFrame::Panel | QFrame::Sunken); setFocusPolicy(Qt::StrongFocus); isStarted = false; isPaused = false; clearBoard(); nextPiece.setRandomShape();
}
void TetrixBoard::setNextPieceLabel(QLabel *label) {
nextPieceLabel = label;
}
QSize TetrixBoard::sizeHint() const {
return QSize(BoardWidth * 15 + frameWidth() * 2, BoardHeight * 15 + frameWidth() * 2);
} QSize TetrixBoard::minimumSizeHint() const
{
return QSize(BoardWidth * 5 + frameWidth() * 2, BoardHeight * 5 + frameWidth() * 2);
}
void TetrixBoard::start() {
if (isPaused) return; isStarted = true; isWaitingAfterLine = false; numLinesRemoved = 0; numPiecesDropped = 0; score = 0; level = 1; clearBoard(); emit linesRemovedChanged(numLinesRemoved); emit scoreChanged(score); emit levelChanged(level); newPiece(); timer.start(timeoutTime(), this);
}
void TetrixBoard::pause() {
if (!isStarted) return; isPaused = !isPaused; if (isPaused) { timer.stop(); } else { timer.start(timeoutTime(), this); } update();
}
void TetrixBoard::paintEvent(QPaintEvent *event) {
QFrame::paintEvent(event); QPainter painter(this); QRect rect = contentsRect();
if (isPaused) { painter.drawText(rect, Qt::AlignCenter, tr("Pause")); return; }
int boardTop = rect.bottom() - BoardHeight*squareHeight(); for (int i = 0; i < BoardHeight; ++i) { for (int j = 0; j < BoardWidth; ++j) { TetrixShape shape = shapeAt(j, BoardHeight - i - 1); if (shape != NoShape) drawSquare(painter, rect.left() + j * squareWidth(), boardTop + i * squareHeight(), shape); } }
if (curPiece.shape() != NoShape) { for (int i = 0; i < 4; ++i) { int x = curX + curPiece.x(i); int y = curY - curPiece.y(i); drawSquare(painter, rect.left() + x * squareWidth(), boardTop + (BoardHeight - y - 1) * squareHeight(), curPiece.shape()); } }
}
void TetrixBoard::keyPressEvent(QKeyEvent *event) {
if (!isStarted || isPaused || curPiece.shape() == NoShape) { QFrame::keyPressEvent(event); return; }
switch (event->key()) { case Qt::Key_Left: tryMove(curPiece, curX - 1, curY); break; case Qt::Key_Right: tryMove(curPiece, curX + 1, curY); break; case Qt::Key_Down: tryMove(curPiece.rotatedRight(), curX, curY); break; case Qt::Key_Up: tryMove(curPiece.rotatedLeft(), curX, curY); break; case Qt::Key_Space: dropDown(); break; case Qt::Key_D: oneLineDown(); break; default: QFrame::keyPressEvent(event); }
}
void TetrixBoard::timerEvent(QTimerEvent *event) {
if (event->timerId() == timer.timerId()) { if (isWaitingAfterLine) { isWaitingAfterLine = false; newPiece(); timer.start(timeoutTime(), this); } else { oneLineDown(); } } else { QFrame::timerEvent(event); }
}
void TetrixBoard::clearBoard() {
for (int i = 0; i < BoardHeight * BoardWidth; ++i) board[i] = NoShape;
}
void TetrixBoard::dropDown() {
int dropHeight = 0; int newY = curY; while (newY > 0) { if (!tryMove(curPiece, curX, newY - 1)) break; --newY; ++dropHeight; } pieceDropped(dropHeight);
}
void TetrixBoard::oneLineDown() {
if (!tryMove(curPiece, curX, curY - 1)) pieceDropped(0);
}
void TetrixBoard::pieceDropped(int dropHeight) {
for (int i = 0; i < 4; ++i) { int x = curX + curPiece.x(i); int y = curY - curPiece.y(i); shapeAt(x, y) = curPiece.shape(); } ++numPiecesDropped; if (numPiecesDropped % 25 == 0) { ++level; timer.start(timeoutTime(), this); emit levelChanged(level); } score += dropHeight + 7; emit scoreChanged(score); removeFullLines(); if (!isWaitingAfterLine) newPiece();
}
void TetrixBoard::removeFullLines() {
int numFullLines = 0; for (int i = BoardHeight - 1; i >= 0; --i) { bool lineIsFull = true; for (int j = 0; j < BoardWidth; ++j) { if (shapeAt(j, i) == NoShape) { lineIsFull = false; break; } } if (lineIsFull) { ++numFullLines; for (int k = i; k < BoardHeight - 1; ++k) { for (int j = 0; j < BoardWidth; ++j) shapeAt(j, k) = shapeAt(j, k + 1); } for (int j = 0; j < BoardWidth; ++j) shapeAt(j, BoardHeight - 1) = NoShape; } }
if (numFullLines > 0) { numLinesRemoved += numFullLines; score += 10 * numFullLines; emit linesRemovedChanged(numLinesRemoved); emit scoreChanged(score); timer.start(500, this); isWaitingAfterLine = true; curPiece.setShape(NoShape); update(); }
}
void TetrixBoard::newPiece() {
curPiece = nextPiece; nextPiece.setRandomShape(); showNextPiece(); curX = BoardWidth / 2 + 1; curY = BoardHeight - 1 + curPiece.minY(); if (!tryMove(curPiece, curX, curY)) { curPiece.setShape(NoShape); timer.stop(); isStarted = false; }
}
void TetrixBoard::showNextPiece() {
if (!nextPieceLabel) return; int dx = nextPiece.maxX() - nextPiece.minX() + 1; int dy = nextPiece.maxY() - nextPiece.minY() + 1; QPixmap pixmap(dx * squareWidth(), dy * squareHeight()); QPainter painter(&pixmap); painter.fillRect(pixmap.rect(), nextPieceLabel->palette().background()); for (int i = 0; i < 4; ++i) { int x = nextPiece.x(i) - nextPiece.minX(); int y = nextPiece.y(i) - nextPiece.minY(); drawSquare(painter, x * squareWidth(), y * squareHeight(), nextPiece.shape()); } nextPieceLabel->setPixmap(pixmap);
}
bool TetrixBoard::tryMove(const TetrixPiece &newPiece, int newX, int newY) {
for (int i = 0; i < 4; ++i) { int x = newX + newPiece.x(i); int y = newY - newPiece.y(i); if (x < 0 || x >= BoardWidth || y < 0 || y >= BoardHeight) return false; if (shapeAt(x, y) != NoShape) return false; }
curPiece = newPiece; curX = newX; curY = newY; update(); return true;
}
void TetrixBoard::drawSquare(QPainter &painter, int x, int y, TetrixShape shape) {
static const QRgb colorTable[8] = { 0x000000, 0xCC6666, 0x66CC66, 0x6666CC, 0xCCCC66, 0xCC66CC, 0x66CCCC, 0xDAAA00 }; QColor color = colorTable[int(shape)]; painter.fillRect(x + 1, y + 1, squareWidth() - 2, squareHeight() - 2, color); painter.setPen(color.light()); painter.drawLine(x, y + squareHeight() - 1, x, y); painter.drawLine(x, y, x + squareWidth() - 1, y); painter.setPen(color.dark()); painter.drawLine(x + 1, y + squareHeight() - 1, x + squareWidth() - 1, y + squareHeight() - 1); painter.drawLine(x + squareWidth() - 1, y + squareHeight() - 1, x + squareWidth() - 1, y + 1);
}
- ifndef TETRIXWINDOW_H
- define TETRIXWINDOW_H
- include <QFrame>
- include <QWidget>
QT_BEGIN_NAMESPACE class QLCDNumber; class QLabel; class QPushButton; QT_END_NAMESPACE class TetrixBoard;
class TetrixWindow : public QWidget {
Q_OBJECT
public:
TetrixWindow();
private:
QLabel *createLabel(const QString &text); TetrixBoard *board; QLabel *nextPieceLabel; QLCDNumber *scoreLcd; QLCDNumber *levelLcd; QLCDNumber *linesLcd; QPushButton *startButton; QPushButton *quitButton; QPushButton *pauseButton;
};
- endif
- include <QtGui>
- include "tetrixboard.h"
- include "tetrixwindow.h"
TetrixWindow::TetrixWindow() {
board = new TetrixBoard;
nextPieceLabel = new QLabel; nextPieceLabel->setFrameStyle(QFrame::Box | QFrame::Raised); nextPieceLabel->setAlignment(Qt::AlignCenter); board->setNextPieceLabel(nextPieceLabel);
scoreLcd = new QLCDNumber(5); scoreLcd->setSegmentStyle(QLCDNumber::Filled); levelLcd = new QLCDNumber(2); levelLcd->setSegmentStyle(QLCDNumber::Filled); linesLcd = new QLCDNumber(5); linesLcd->setSegmentStyle(QLCDNumber::Filled);
startButton = new QPushButton(tr("&Start")); startButton->setFocusPolicy(Qt::NoFocus); quitButton = new QPushButton(tr("&Quit")); quitButton->setFocusPolicy(Qt::NoFocus); pauseButton = new QPushButton(tr("&Pause")); pauseButton->setFocusPolicy(Qt::NoFocus); connect(startButton, SIGNAL(clicked()), board, SLOT(start())); connect(quitButton , SIGNAL(clicked()), qApp, SLOT(quit())); connect(pauseButton, SIGNAL(clicked()), board, SLOT(pause())); connect(board, SIGNAL(scoreChanged(int)), scoreLcd, SLOT(display(int))); connect(board, SIGNAL(levelChanged(int)), levelLcd, SLOT(display(int))); connect(board, SIGNAL(linesRemovedChanged(int)), linesLcd, SLOT(display(int)));
QGridLayout *layout = new QGridLayout; layout->addWidget(createLabel(tr("NEXT")), 0, 0); layout->addWidget(nextPieceLabel, 1, 0); layout->addWidget(createLabel(tr("LEVEL")), 2, 0); layout->addWidget(levelLcd, 3, 0); layout->addWidget(startButton, 4, 0); layout->addWidget(board, 0, 1, 6, 1); layout->addWidget(createLabel(tr("SCORE")), 0, 2); layout->addWidget(scoreLcd, 1, 2); layout->addWidget(createLabel(tr("LINES REMOVED")), 2, 2); layout->addWidget(linesLcd, 3, 2); layout->addWidget(quitButton, 4, 2); layout->addWidget(pauseButton, 5, 2); setLayout(layout); setWindowTitle(tr("Tetrix")); resize(550, 370);
}
QLabel *TetrixWindow::createLabel(const QString &text) {
QLabel *lbl = new QLabel(text); lbl->setAlignment(Qt::AlignHCenter | Qt::AlignBottom); return lbl;
}
- include <QtGui>
- include <stdlib.h>
- include "tetrixwindow.h"
int main(int argc, char *argv[]) {
QApplication app(argc, argv); TetrixWindow window; window.show(); qsrand(QTime(0,0,0).secsTo(QTime::currentTime())); return app.exec();
}
</source>