Memory Game

Made by:

• Arınç Demir
• Dağlar Eren Tekşen

For our Cmpe230 (Systems Programming) course project 3.

Purpose

To create a classic memory game which includes matching the cards having the same colors using QT and C++.

Usage

Open the project in QT Creator and run it.

Implementation

We wrote this project in multiple files with one file serving only one purpose to make it easier to understand and debug.

colorbutton.h

We created the function declarations and the following data fields:

• id for determining the color of the button, and to be able to match them.
• identifier that is random to be able to distinguish the buttons.
• open to determine if back side of the card is shown.
• grid as a reference to the actual game manager object MyGrid

mygrid.h

We created the function declarations and the following data fields:

• score to hold how many cards have been matched yet.
• state holding how many cards are open right now
• tries to hold how many tries the player has left.
• firstShownIdentifier to determine which button is shown first.
• secondShownIdentifier to determine which button is shown second.
• timerId to be able to kill the timer that is created.
• scoreLabel to hold and be able to make changes on the score label.
• triesLabel to hold and be able to make changes on the tries label.

colorbutton.cpp

• pressed() updates the cards and grid depending on state of the grid. Calls processTwoShown() if two cards are shown.
• showDefaultColor() shows the card in the default color, which is black
• showColor() shows the card in the color defined by its id, call this when card is opened.

mygrid.cpp

• reset() resets the game states. Called in the program beginning and when the reset button is pressed.
• processTwoShown() called when two buttons are opened on the screen. Gets the two buttons, and checks if they are the same. If not, a timer is created.
• loseGame() called when the player runs out of tries. Pops up a message box and resets the game.
• winGame() called when all cards are open. Pops up a message box and resets the game.
• timerEvent() is called by the timer created in processTwoShown. Closes the cards.

main.cpp

We initialized all buttons, text, layout and connected them here. After that, app.exec() is called for the main ui loop.

Difficulties Encountered

• It was hard to discover the QT library in general. The documentation is hard to understand, and it is hard to find what you are looking for.
• The ui programming prodigm is quite different than the coding we were used to. It took some time to understand and adapt to it.

Conclusion

It was a fun but challenging project. It was not challenging because it took a long time, but it was hard to understand the ui design concept and it was hard to find how to do things in QT. Overall, we learned a lot about ui creation and game making.