import { Vec2 } from './vec2';
import { BoundArray } from './bound_array';
export declare namespace GridUtil {
    function getIndex(x: number, y: number, width: number): number;
    function getX(index: number, width: number): number;
    function getY(index: number, width: number): number;
    function getXY(index: number, width: number): number[];
    function checkGrid(array: unknown[][]): boolean;
    function toGrid<T>(items: T[], width: number, height: number): T[][];
}
export declare class GridItem extends Vec2 {
    index: number;
    constructor(x: number, y: number, index: number);
}
export declare class Grid<T extends GridItem> extends BoundArray<T[]> {
    readonly width: number;
    readonly height: number;
    get size(): number;
    constructor(array: T[][]);
    private _1d;
    private _2d;
    to1d(): T[];
    to2d(): T[][];
    get(x: number, y: number): T;
    set(x: number, y: number, item: T): this;
    swap(item1: T, item2: T): boolean;
}