Barelydead / oop-chess

/**

 * Class with Knight logic

 */

class Knight {

    /**

     * init

     */

    constructor(color) {

        this.symbol = "N";

        this.moved = 0;

        this.active = true;

        this.color = color;

        this.rows = [null, "A", "B", "C", "D", "E", "F", "G", "H"];

        this.img = this.color === "white" ? "w-knight" : "b-knight";

    }

    legalMove(x, y, nx, ny) {

        let xNum = this.rows.indexOf(x);

        let nxNum = this.rows.indexOf(nx);

        let xStep = Math.abs(xNum - nxNum);

        let yStep = Math.abs(y - ny)

        if (xStep == 2 && yStep == 1 || xStep == 1 && yStep == 2) {

            return true;

        }

        return false;

    }

}

module.exports = Knight;