@ludw1gj/maze-generation/lib/core/grid.js

Maze generation algorithms.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const cell_1 = require("./cell");
const direction_1 = require("./direction");
class Grid {
    constructor(height, width) {
        const cells = new Array(height);
        for (let y = 0; y < cells.length; y++) {
            cells[y] = new Array(width);
            for (let x = 0; x < cells[y].length; x++) {
                cells[y][x] = new cell_1.Cell({ x, y });
            }
        }
        this.cells = cells;
        this._height = height;
        this._width = width;
    }
    get height() {
        return this._height;
    }
    get width() {
        return this._width;
    }
    getCell(pos) {
        if (this.isPositionValid(pos)) {
            return this.cells[pos.y][pos.x];
        }
        return undefined;
    }
    exportCells() {
        return this.cells.map(row => row.map(cell => cell.createCopy()));
    }
    getUnvisitedNeighbours(cell) {
        return direction_1.DIRECTIONS.map(dir => {
            const neighbourPos = cell.getChangeInPosition(dir);
            const neighbourCell = this.getCell(neighbourPos);
            return { neighbourCell, dir };
        }).filter(val => val.neighbourCell !== undefined && !val.neighbourCell.isVisited);
    }
    isPositionValid(pos) {
        return pos.x >= 0 && pos.y >= 0 && pos.x < this._width && pos.y < this._height;
    }
    static getRandomElement(arr) {
        const randIndex = Math.floor(Math.random() * arr.length);
        return arr[randIndex];
    }
}
exports.Grid = Grid;
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