Chess

A simple chess engine in js

Installation

copy and paste the follwing code in your html file

<script type="text/javascript"src="https://cdn.jsdelivr.net/gh/rapythereaper/chess@master/goti.js"></script>
<script type="text/javascript" src="https://cdn.jsdelivr.net/gh/rapythereaper/chess@master/board.js"></script>
<script>
    let game=new Game();
</script>

Board

The chess board in the game is represented as an top down graph with 8 rows and 8 column. (x,y) cordinate is used to reprecent each cell in starting from (0,0) - (7,7)

API

.init():

initilalize the game to starting position.

let game=new Game();
//other logic...
game.init()

same result can be achived by createing new game object.

.print():

print acii representation of the board.

   let game=new Game();
   game.print();
   /*
        e	h	c	k	q	c	h	e
        i	i	i	i	i	i	i	i
        *	*	*	*	*	*	*	*
        *	*	*	*	*	*	*	*
        *	*	*	*	*	*	*	*
        *	*	*	*	*	*	*	*
        i	i	i	i	i	i	i	i
        e	h	c	k	q	c	h	e
   */

.getMove(y,x):

returns the list of possible move that that can be taken by pieces in position (y,x)

    let game=new Game();
    let pos=game.getMove(6,0)
    console.log(pos)            // [{y:5,x:0},{y:4,x:0}]

for an empty cell or if pieces color is not the color of current player it return empty list

.getAllMoves():

return all the posible move that can take by the current player.

    let game=new Game();
    console.log(game.getAllMoves());    // [{from:{6,0},to:[{y:5,x:0},{y:4,x:0}]},.....]

.move(from,to):

moves the pieces from(y,x)-to(y,x).

   let game=new Game();
   game.print();
   /*
        e	h	c	k	q	c	h	e
        i	i	i	i	i	i	i	i
        *	*	*	*	*	*	*	*
        *	*	*	*	*	*	*	*
        *	*	*	*	*	*	*	*
        *	*	*	*	*	*	*	*
        i	i	i	i	i	i	i	i
        e	h	c	k	q	c	h	e
   */
   let from={y:6,x:0};
   let to={y:4,x:0};
   game.move(from,to);  // move the white pawn form (6,0 ) to (4,0)
   game.print();

   /*
        e	h	c	k	q	c	h	e
        i	i	i	i	i	i	i	i
        *	*	*	*	*	*	*	*
        *	*	*	*	*	*	*	*
        i	*	*	*	*	*	*	*
        *	*	*	*	*	*	*	*
        *	i	i	i	i	i	i	i
        e	h	c	k	q	c	h	e
   */
   

for unvalid move throws error

.moveWithNoRule(from,to):

allows for moveent of piece without rule checking

.undo():

undo the last played move.