TiqTaq

Tic Tac Toe game with a minimalist Qt Widgets GUI, where the computer employs a minimax algorithm for unbeatable play, developed in C++20.

Prerequisites

• CMake
• GNU Make or Ninja
• GCC/G++ or Clang
• Qt6 (specifically, Qt6Widgets)

For Ubuntu LTS 22.04, you can install the necessary dependencies with:

sudo apt-get update
sudo apt-get install build-essential cmake git qt6-base-dev libgl1-mesa-dev

Building the Project

Standard Build

mkdir build && cd build
cmake <source-dir>
cmake --build .

Advanced Build with Test Configurations

The project includes a script, build-and-test-configurations.sh, designed to facilitate building and testing across multiple configurations (e.g., Debug, Release, with various sanitizers). This script automates the process of configuring, building, packaging, and running tests across multiple configurations:

• Debug
• Release
• Address (and Leak) Sanitizer (Debug)
• Thread Sanitizer (Debug)
• Undefined Behavior Sanitizer (Debug)

Run script:

bash <source-dir>/build-and-test-configurations.sh

This script will create separate build directories for each configuration at builds/build-tiqtaq-<configuration>. The script exits on the first encountered error.

Run Application

Launch Tic-Tac-Toe application:

<build-dir>/tiqtaq/row_tiqtaq

Gameplay Overview

• Starting Player: The human player starts as 'X', and the computer plays as 'O'.
• Restarting the Game: Restart the application to begin a new game.

Computer Opponent

• Default Mode: By default, the computer employs the minimax algorithm for its moves, ensuring it plays optimally. Winning against the computer in this mode is not possible.
• Easy Mode: Set environment variable TIQTAQ_EASY_MODE=true to make the computer beatable, where it will choose the first available cell.

Compatibility

This application has been tested on Ubuntu LTS 22.04 via Windows Subsystem for Linux (WSL) 2. It's a minimalistic Qt Widgets app that may also work in other similar environments.