import { Application } from './Application';
import { Entity } from './Entity';
import { Helper } from './Helper';
export declare abstract class System {
    _id: string;
    _app: Application;
    entityMap: Map<string, Entity>;
    helperMap: Map<string, any>;
    abstract onAdded(): void;
    abstract onRemoved(): void;
    abstract onUpdating(deltaTime: number): void;
    setApp(app: Application): void;
    get PhysicEnv(): import("./PhysicAmmo").PhysiAmmo;
    protected addEntity(entity: Entity): Promise<void>;
    protected removeEntity(entity: Entity): void;
    getEntity(entityName: string): Entity;
    findEntityByObject(object: any): any;
    protected addHelper(helperName: string, helper: Helper<any>): Promise<void>;
    protected removeHelper(helperName: string): void;
    getHelper(helperName: string): any;
    getSnapshot(): {
        _i: string;
        _e: any;
        _h: any;
    };
    removeAllEntityAndHelpers(): void;
    update(deltaTime: number): void;
    remove(): void;
}