Evgenij LegotskojSept. 23, 2015, 10 a.m.

How to make game using Qt - Lesson 5. Adding sound QMediaPlayer

Getting to the fifth and final lesson on writing games on Qt, which will add sound using QMediaPlayer class. I propose to add the three types of sounds: Eating apples, buzzing flies that will be buzzing when moving and heartbreaking cry when Fly will eaten.

The sound in the project structure

The sound in the project structure is placed in a resource file, as shown in the screenshot of the project structure.

To do this, create a resource directory and folder game . Further, in the resources folder, create a resource file, which prescribes the prefix "/" and add audio files that are pre-placed in the game folder.

And then the sound must be connected to the project using QMediaPlayer class.

In this case, the sounds are connected in three places of the code.


In the header file, you must connect the class library and QMediaPlayer QMediaPlaylist. And also announce at the object of these classes.

#ifndef TRIANGLE_H
#define TRIANGLE_H

#include <QObject>
#include <QGraphicsItem>
#include <QPainter>
#include <QGraphicsScene>
#include <QMediaPlayer>
#include <QMediaPlaylist>

#include <windows.h>

class Triangle : public QObject, public QGraphicsItem
    explicit Triangle(QObject *parent = 0);

    // The code from the previous lessons

    QMediaPlayer * m_player;        // Audio player
    QMediaPlaylist * m_playlist;    // Playlist


#endif // TRIANGLE_H


Initialization QMediaPlayer object is made in the constructor of the class, but the management of audio playback will be realized in the slot game Fly as fly should buzz only when the game moves on stage.

#include "triangle.h"

Triangle::Triangle(QObject *parent) :
    QObject(parent), QGraphicsItem()
    angle = 0;     
    steps = 1;      
    countForSteps = 0;     

    m_player = new QMediaPlayer(this);          // Init player
    m_playlist = new QMediaPlaylist(m_player);  // Init playlist

    m_player->setPlaylist(m_playlist);          // Set playlist into player
    m_playlist->addMedia(QUrl("qrc:/game/bzzz.wav"));       // Adding of track to playlist
    m_playlist->setPlaybackMode(QMediaPlaylist::CurrentItemInLoop); // track loop



QRectF Triangle::boundingRect() const
    return QRectF(-40,-50,80,100);   

void Triangle::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
   // The code from the previous lessons

void Triangle::slotGameTimer()
    if(GetAsyncKeyState(VK_LEFT) ||
       GetAsyncKeyState(VK_RIGHT) ||
       GetAsyncKeyState(VK_UP) ||
       // The code from the previous lessons

        m_player->play();   // The player plays only when the fly moves
    } else {

    // The code from the previous lessons


The class header file, which acts as the core of the game, you only need to connect the library, which are responsible for classes and QMediaPlayer QMediaPlaylist.


In this class, there is no global ad QMediaPlayer object because objects are created dynamically, for example, for every apple eaten. Due to the fact that apples can be eaten very quickly and almost simultaneously, and the sounds of eating apples will sound together, one player can not cope with such a task, so you have to run on the player at every sound. Also individual player will play death of Fly.

#include "widget.h"
#include "ui_widget.h"

Widget::Widget(QWidget *parent) :
    ui(new Ui::Widget)
    // The code from the previous lessons

    delete ui;

void Widget::slotDeleteApple(QGraphicsItem *item)
    foreach (QGraphicsItem *apple, apples) {
        if(apple == item){
            delete apple;               

            // The sound eating apple
            QMediaPlayer * m_player = new QMediaPlayer(this);   // Initialize player
            QMediaPlaylist * m_playlist = new QMediaPlaylist(m_player); // create a playlist

            m_player->setPlaylist(m_playlist);  // set playlist to player
            m_playlist->addMedia(QUrl("qrc:/game/hrum.wav")); // Add audio to player
            m_playlist->setPlaybackMode(QMediaPlaylist::CurrentItemOnce); // play one time
            m_player->play();   // run player

void Widget::slotCreateApple()
   // The code from the previous lessons

void Widget::on_pushButton_clicked()
   // The code from the previous lessons


    gameState = GAME_STARTED;

void Widget::slotGameOver()

    // If Fly was Killed, then run death cry
    QMediaPlayer * m_player = new QMediaPlayer(this);       
    QMediaPlaylist * m_playlist = new QMediaPlaylist(m_player); 


    // The code from the previous lessons

void Widget::slotPause()
    // The code from the previous lessons


That's finished work on our first game. Now you have an idea of how to create a simple game on the Qt C ++.

Full source code: Source

Game: Muha_Setup

A full list of articles in this series:


We recommend hosting TIMEWEB
We recommend hosting TIMEWEB
Stable hosting, on which the social network EVILEG is located. For projects on Django we recommend VDS hosting.
Support the author Donate

Из кьюта приложение не хочет запускаться, аварийно завершается, но каких-либо ошибок не выдаёт. Оно открывается, после нажатия "старт" зависает и завершается. Если не из кьюта запускать дебаг - та же ерунда. Релиз вообще отказывается работать, ошибки на картинках. Все dll и libs доложила и в дебаг, и в релиз. В чём может быть проблема?
А windeployqt вообще динамит, открывает консоль на секунду - и всё. Удаление qmakes и pro.user тоже не помогает

Ну может бибилотеки не те положили? У вас сборка для MinGW, а либы для MSVC.


Only authorized users can post comments.
Please, Log in or Sign up

Let me recommend you the excellent hosting on which EVILEG is located.

For many years, Timeweb has been proving his stability.

For projects on Django I recommend VDS hosting

View Hosting
  • Viktor
  • April 14, 2021, 3:40 p.m.

C ++ - Test 004. Pointers, Arrays and Loops

  • Result:50points,
  • Rating points-4
  • Fedya
  • April 14, 2021, 4:04 a.m.

C++ - Test 001. The first program and data types

  • Result:66points,
  • Rating points-1

C++ - Тест 003. Условия и циклы

  • Result:71points,
  • Rating points1
Last comments

PyQt5 - Tutorial 009. Using QThread with MoveToThread

Hello. Let's say I want to send some variables to "run" define. How can we do that? I modified your code, I tried something like below, but the GUI is frozen that way. I could not be able to und…

Распознавание изображений на Python с помощью TensorFlow и Keras

почему то вместо 50000 обрабатывает по 782 картинки кажду. эпоху

Qt/C++ - Lesson 008. QDataWidgetMapper - Working with the database via a widget

Понял сам так - происходит через setTable() "Sets the database table on which the model operates to tableName. Does not select data from the table, but fetches its field information", а затем че…

Qt/C++ - Lesson 008. QDataWidgetMapper - Working with the database via a widget

Начал делать что-то похожее, но без sql. Не очень понимаю, что делает mapper->setCurrentModelIndex(model->index(row,0)); Вернее не понимаю вот что: откуда он берёт данные, кот…
Now discuss on the forum

Помогите переложить код QML OpenCV c PyQt5 на PySide2

Структура проекта ├── main.py ├── main.qml └── PyCVQML ................├── cvcapture.py ................├── cvitem.py ................└── init .py …

QScrollArea dynamically add QCheckBoxes

Всё правильно. Это просто спамер, который отправился в вечный бан.

Подключение приложения qt qml к БД postgresql из приложения qt qml c++, собранное под android

Алексей, код уже написан. Приложение работает под ОС Windows, но хочется его запустить на Android. По поводу сборки драйвера, не получается найти свежей инструкции, а главное рабочей.

Qt, Sqlite и Android. Как подключить базу данных?

Добрый день, добавил базу к ресурсам, приложение вроде как открывает БД, но данные не видет, что может быть не так? qt qml c++ под android m_db = QSqlDatabase::addDatabase("QSQLITE")…
  • BlinCT
  • April 13, 2021, 4:11 a.m.

Отображение талицы в Column в qml обьекте

Проблема в том что я все таблицы перевел на вторые контролы, все таблицы на них сделаны, шаблон для них всех создан. Только под 2 эти таблицы возвпащать все на первые контролы не думаю что прави…
© EVILEG 2015-2021
Recommend hosting TIMEWEB