Tic-Tac-Toe Game

This Tic-Tac-Toe game is designed with Python. The game can be played between two player(player vs player mode) or with computer(player vs computer mode).

The player vs computer mode is so intelligent that it can predict almost all of the possible ways that human brain can think of, which make it difficult for any player to defeat the computer. There is a package named Computer that performs as a brain while playing with computer and does all the logical calculation.

The src directory contains all of the source code. In this directory there is module named as lib.py that contains all the functions and required data for the game.

Player vs Player Mode:

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The main.py file is executed first. That calls the function below:

start_play() 

This function first initiate a dictionary game_data that holds all the move of the game. Then the below functions are called one by one.

game_type_selection()

This function lets the user to select how he wants to play, either with another player or with computer.

character_selection()

This function lets the user to select a character for him, and also lets the second player to select another one. While playing against computer, the character for the computer is auto selected depending on the character that the user selected for him.

print_board()

This function prints a tic-tac-toe board with data from the dictionary game_data.

Then a while loop runs, for total 9times, that allows the player and computer to provide there move one by one. In each cycle, the function is called:

get_winner()

This function checks the dictionary game_data to find the winner based on the game rules.

Any time user can leave the game, while asked for his move, using the command exit.

Player vs Computer Mode:

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The package Computer is used for this mode. While playing against computer, in main.py file a while loop runs and takes input from player and computer one by one. When it's computer turn, then the below function is called:

computer_brain()

This function does all the logical calculation to generate a move for the computer. This decision making is done in several steps, for that the following functions are used. All the functions are coming from the module named computerLib.py

checkWinningMove()

This function checks for the move that can make a win for the computer. This function is also checks for the move that can block the win of the player.

triangleAttack()

This function creates a triangle attack, that creates opportunities for the computer to win.

firstMethod()

This function helps to select move based on several criteria.

findBlank()

This function finds blank position on the board, so that the computer can make move to that blank position.

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