class Levels {
    load(lvl) {
        let map = [];
        switch (+lvl) {
            case 1:
                map = [].concat(
                                this.row(0, [1, 0, 1, 0, 0, 1, 0, 1]),
                                this.row(1, [1, 1, 1, 1, 1, 1, 1, 1]),
                                this.row(3, [0, 1, 1, 1, 1, 1, 1, 0]),
                                this.row(4, [1, 1, 1, 1, 1, 1, 1, 1])
                                );
                break;
            case 2:
                map = [].concat(
                                this.row(0, [1, 1, 1, 0, 1, 1, 0, 0]),
                                this.row(1, [0, 0, 1, 0, 1, 0, 1, 0]),
                                this.row(2, [0, 0, 1, 0, 1, 0, 1, 0]),
                                this.row(3, [1, 0, 1, 0, 1, 0, 1, 0]),
                                this.row(4, [0, 1, 1, 0, 1, 1, 0, 0])
                                );
                break;
            default:
                map = [].concat(
                                this.row(0, [1, 1, 1, 1, 1, 1, 1, 1]),
                                this.row(1, [1, 1, 1, 1, 1, 1, 1, 1]),
                                this.row(2, [1, 1, 1, 1, 1, 1, 1, 1]),
                                this.row(3, [1, 1, 1, 1, 1, 1, 1, 1]),
                                this.row(4, [1, 1, 1, 1, 1, 1, 1, 1])
                                );
                break;
        }
        return this.toBricks(map);
    }

    row(r, bricksTypes) {
        let row = [];
        for (var i = 0; i < bricksTypes.length; i++) row.push([bricksTypes[i], i, r]);
        return row;
    }

    toBricks(map) {
        let bricks = [];
        map.forEach(b => {
            if (b[0] > 0) bricks.push(new Brick(b[0], b[1], b[2]));
        });
        return bricks;
    }
}