import { IModule } from '../IModule';
import { GameObject } from "../../world/GameObject";
import { WorldQuery, IQueryResult, GameObjectQuery } from './WorldQuery';
export type QueryFn<TQuery, TResult> = (query: TQuery) => IQueryResult<TResult>;
/**
 * The game world, containing all the current {@link GameObject}s
 * and everything loaded in the game.
 */
export declare class WorldModule implements IModule {
    /** All {@link GameObject}s currently in the world. */
    readonly gameObjects: GameObject[];
    constructor();
    /**
     * Called once per frame.
     * @param deltaTime Time (in seconds) since the last frame.
     */
    onUpdate(deltaTime: number): void;
    /**
     * Destroy the world and everything in it.
     */
    addObject(gameObject: GameObject): void;
    /**
     * Destroys a {@link GameObject}, removing it from the world.
     * @param gameObject The {@link GameObject} to remove.
     */
    destroyObject(gameObject: GameObject): void;
    query<TResult>(queryFn: QueryFn<WorldQuery, TResult>): TResult;
    query<TResult>(relativeTo: GameObject, queryFn: QueryFn<GameObjectQuery, TResult>): TResult;
}
/**
 * The game world, containing all the current {@link GameObject}s
 * and everything loaded in the game.
 */
export declare const World: WorldModule;