A pacman game made with Qt Creator.
Play with w, a, s, d keys.
This is developed on Qt 6.2.1. If you want to develop under Qt 6, you may need to uncomment some lines in Qt-pac-man.pro file.
Name: Qt 6.2.1 GCC 64bit
ABI: x86-linux-generic-elf-64bit
Source: /opt/Qt/6.2.1/gcc_64
mkspec: linux-g++
You can take reference from mainwindow.cpp and mainwindow.h for detailed code. Assume that the following steps are implemented in a QMainWindow.
- Add a
QGraphicsViewnamedgraphicsViewfor displaying game. (In the source code,graphicsViewis defined in mainwindow.ui.) - Add a
QLabelnamedscorefor displaying score. - Add two
QLabels namedwin_labelandlose_labelfor displaying when game is over. - Add a
QTimernamedscore_timerfor updating current score. - Declare
keyPressEventoverride function. - Declare
update_scoreslot function. - Include game.h.
#include <QMainWindow>
#include <QLabel>
#include <QKeyEvent>
#include <QTimer>
#include "game.h"
QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow(QWidget *parent = nullptr);
~MainWindow();
void keyPressEvent(QKeyEvent*) override;
private slots:
void update_score();
private:
Ui::MainWindow *ui;
QLabel *score, *win_label, *lose_label;
QTimer *score_timer;
Game *game;
};Setup graphicsView in the constructor of MainWindow.
#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
, ui(new Ui::MainWindow)
{
ui->graphicsView->setStyleSheet("QGraphicsView {border: none;}");
ui->graphicsView->setBackgroundBrush(Qt::black);
ui->graphicsView->setFocusPolicy(Qt::NoFocus);Set the geometry of graphicsView and game. Read game map from map.txt.
int map_height = 20, map_width = 29; // 20x29 game map
int x = 50, y = 50; // coordinate in mainwindow
int w = (map_width * GameObject::Width); // width pixel
int h = (map_height * GameObject::Width); // height pixel
ui->graphicsView->setGeometry(x, y, w, h);
game = new Game(x, y, map_width, map_height, ":/game_objects/map_objects/map.txt");
ui->graphicsView->setScene(game);Initialize labels and the timer.
score = new QLabel(this);
win_label = new QLabel(this);
lose_label = new QLabel(this);
score_timer = new QTimer(this);
// setup labels' properties here...Start timer and game.
score_timer->start(25);
connect(score_timer, SIGNAL(timeout()), this , SLOT(update_score()));
game->start();
}Update score when score_timer ticks. If the pacman eats all points, game->stat will change to Game::Win. If a ghost catches the pacman, game->stat will change to Game::Lose. Stop timer and show win_label or lose_label when game is over.
void MainWindow::update_score()
{
score->setText(QString::number(game->get_score()));
if (game->stat == Game::Win) {
win_label->show();
score_timer->stop();
} else if (game->stat == Game::Lose) {
lose_label->show();
score_timer->stop();
}
}Detect key press events from w, a, s, d keys and make pacman move.
void MainWindow::keyPressEvent(QKeyEvent *e)
{
switch (e->key()) {
case Qt::Key_W:
game->pacman_next_direction(GameObject::Up);
break;
case Qt::Key_A:
game->pacman_next_direction(GameObject::Left);
break;
case Qt::Key_S:
game->pacman_next_direction(GameObject::Down);
break;
case Qt::Key_D:
game->pacman_next_direction(GameObject::Right);
break;
}
}Here are some changeable macro in game.h.
#define BALL_SCORE 10 // score of balls
#define POWERBALL_SCORE 30 // score of powerballs
#define GHOST_SCORE 50 // score of ghosts
#define INTERVAL 10 // move interval of pacman
#define NORMAL_INTERVAL 10 // move interval of normal ghosts
#define PANNIC_INTERVAL 15 // move interval of pannic ghosts
#define RUNNING_INTERVAL 5 // move interval of running ghosts
#define PANNIC_TIME 1000 // interval number of pannic ghosts
#define FLASH_INTERVAL 200 // flash interval of powerballsHere's a changeable array in game.cpp.
// interval number before ghosts going out the cage
int GHOST_RELEASE_TIME[] = {0, 200, 400, 600};
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