tictactoe-game-module
A Tic Tac Toe Game Modules, comprising of a Board, Minimax algorithm, and a random choice algorithm with inbuilt methods
Installation
npm install tictactoe-game-modules --save
Usage
import { Board } from tictactoe-game-modules
import { Minimax } from tictactoe-game-modules
import { RandomChoice } from tictactoe-game-modules
Modules and Methods
Board Module
import { Board } from tictactoe-game-modules
Initialize an instance object of the Board
const board = new Board(optional parameter);
You can pass in an optional custom Array of Strings as parameter
Example:
const board = new Board(['X', 'X', '', '', 'O', 'O', '', '', ''])
Methods:
board.grid
This returns an array of empty strings
['', '', '', '', '', '', '', '', '']
board.makeMove(index: number, symbol: string)
This makes a move on the board and returns a new array with the symbol.
Example:
board.makeMove(1, 'X) = ['X', '', '', '', '', '', '', '', '']
N.B: Index should be `1 -9`
board.currentMark()
This returns the current turn taking symbol(mark) of either X or O
If remaining position on the board is an odd number, the current mark is X, if its an even number, the current mark is O
Example:
grid = ['X', 'O', 'X', '', '', '', '', '', ''] = current symbol is 'O'
board.defaultPositionState(index: number)
This returns back the default board position that has already has a symbol.
Example:
grid = ['X', 'O', 'X', '', '', '', '', '', '']
board.defaultPositionState(1) = ''
board.isPositionTaken(index: number)
This returns a boolean if a position already ahs a symbol
I.e If the value of the index in the array is not '', that means the index is already marked.
Example:
grid = ['X', '', '', '', '', '', '', '', '']
board.isPositionTaken(1) = true
board.availablePositions()
This returns an array with the available index's on the board
Example:
grid = ['X', '', 'O', '', '', '', '', '', ''] = [2, 4, 5, 6, 7, 8, 9 ]
board.availablePositionCount()
This returns the count total of the available index's on the board
Example:
grid = ['X', '', 'O', '', '', '', '', '', ''] = 7
board.isMoveValid(input: number)
This validates the available postions in the board array and returns a boolean
Example:
grid = ['', '', '', '', '', '', '', '', '']
board.isMoveValid(12) = false
board.markedBoardPositionValue(input: number)
This returns a string value of the board array index
Example:
grid = ['', '', 'X', 'O', '', '', '', '', '']
board.markedBoardPositionValue(3) = `X`
board.row()
This transposes a flat board array and return a 2D array with the row values in each child array
Example:
grid = ['X', 'X', 'X', 'O', 'O', 'O', 'X', 'O', 'X']
= [['X', 'X', 'X'],
`['O', 'O', 'O'],
['X', 'O', 'X']]
board.colums()
This transposes a flat board array and return a 2D array with the column values in each child array
Example:
grid = ['X', 'X', 'X', 'O', 'O', 'O', 'X', 'O', 'X']
= [['X', 'O', 'X'],
`['X', 'O', 'O'],`
['X', 'O', 'X']]
board.diagonals()
This transposes a flat board array and return a 2D array with the diagonal values in each child array
Example:
grid = ['X', 'X', 'X', 'O', 'O', 'O', 'X', 'O', 'X']
= [['X', 'O', 'X'],`
`['X', 'O', 'X']]
board.hasWinner()
This method loop every line(child array) of the 2D arrays (rows, columns or diagonally) and returns a boolean if there is a win in any of the lines.
Eg:
grid = ['X', 'X', 'X', 'O', '', 'O', '', 'O', 'X'] = true, for a row win
board.winningPlayer()
This the winning mark on the baord array
Example;
grid = ['X', 'X', 'X', 'O', '', 'O', '', 'O', 'X'] = 'X' the winning symbol
board.isGameDraw()
This returns a boolean if there is a tie on the board
Example:
grid = ['X', 'O', 'X', 'O', 'X', 'O', 'O', 'X', 'O'] = true
board.isGameOver()
This returns a boolean if there is a winner or a tie on the board
Example;
grid = 'X', 'X', 'X', 'O', '', 'O', '', 'O', 'X'] = true, there a win on first row
grid = ['X', 'O', 'X', 'O', 'X', 'O', 'O', 'X', 'O'] = true, there is tie
Minimax Module
import { Minimax } from tictactoe-game-modules
Intialize an instance object of the Minimax and Board
const board = new Board();
const minimax = new Minimax(currentPlayer: string, opponent: string);
Example:
const minimax = new Minimax('X, 'O);
You can pass in an optional custom Array of Strings as parameter to the Board
Example:
board = new Board(['X', 'X', '', '', 'O', 'O', '', '', ''])
now board.grid = ['X', 'X', '', '', 'O', 'O', '', '', '']
instead of default grid = ['', '', '', '', '', '', '', '', '']
Method:
minimax.findBestMove(board)
This returns the best winning index of the given board
Example sceenerio:
const baord = new Board();
minimax.findBestMove(board) = ['X', '', '', '', '', '', '', '', ''] = 1
That means position one is the best optimal position for the opponent to pick
RandomChoice Module
import { RandomChoice } from tictactoe-game-modules
Intialize an instance object of the RandomChoice and Board
const board = new Board();
const random = new Random(board);
You can pass in an optional custom Array of Strings as parameter to the Board
Example:
board = new Board(['X', 'X', '', '', 'O', 'O', '', '', ''])
now board.grid = ['X', 'X', '', '', 'O', 'O', '', '', '']
instead of default grid = ['', '', '', '', '', '', '', '', '']
Method:
random.findRandomMove(board)
This returns the best winning index of the given board
Example sceenerio:
const baord = new Board();
random.findRandomMove(board) = random index
This means position on the board is a random index from the available board index's