import { Mob } from './Mob';
export declare class Area {
    readonly mobs: Map<string, Mob>;
    readonly dirties: Set<Mob>;
    /**
     * Create a new mobility object. You can use `mob.id` property for `getMob` or `removeMob` method.
     * @param id Mobility identifier. If same id is already exists, it will be not create mob and returns exists one.
     * @param thresholdRadius Sight of mob.
     */
    addMob(id: string, thresholdRadius: number): Mob;
    /**
     * Get a added mobility object from area instance. If object not exists, It will be returns `null`.
     * @param id Mobility identifier what you want find.
     */
    getMob(id: string): Mob | null;
    /**
     * Remove a added mobility. If object exists, returns `true`. otherwise, returns `false`.
     * @param id Mobility identifier what you want remove.
     */
    removeMob(id: string): boolean;
    /**
     * When this function is called, an 'in', 'out' event emits according to the coordinates of the mob.
     */
    update(): void;
    /**
     * Destroys all mob.
     */
    destroy(): void;
}