import I_Obstacles from '../Obstacles/I_Obstacles';
import I_NavigatorTile from '../NavigatorTile/I_NavigatorTile';
import { point, size } from '../../interfaces';
import I_Grid from './I_Grid';
export default class Grid implements I_Grid {
    readonly size: size;
    readonly obstacles: I_Obstacles;
    readonly tiles: I_NavigatorTile[];
    readonly rows: I_NavigatorTile[][];
    constructor(size?: size);
    /** Returns a tile at the specified coordinates. */
    getTile({ x, y }: point): I_NavigatorTile | null;
    /** Returns a random tile, can be an obstacle or not. */
    getRandomTile(): I_NavigatorTile;
    /** Returns a random non-obstacle tile, if it exists. */
    getRandomFreeTile(): I_NavigatorTile | null;
    private checkMinimumGridSize;
    private makeGrid;
}
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