import type { EngineGlobalObject } from "../EngineGlobalObject";
import type { Component } from "./Component";
import type { ComponentConstructor } from "./ComponentConstructor";
import type { GameObjectBuilder } from "./GameObjectBuilder";
import { Transform } from "./Transform";
/**
 * base class for all entities in scenes
 * do not drive this class
 */
export declare class GameObject {
    private readonly _engineGlobalObject;
    private readonly _instanceId;
    private _activeInHierarchy;
    private _activeSelf;
    private readonly _transform;
    /**
     * add a child game object
     * @param gameObjectBuilder
     */
    addChildFromBuilder(gameObjectBuilder: GameObjectBuilder): GameObject;
    private onChangeParent;
    /**
     * add a component to this game object
     * it can be failed depending on the disallowMultipleComponent or requiredComponent option
     * @param componentCtor
     * @returns if success, return the component instance
     */
    addComponent<T extends Component>(componentCtor: ComponentConstructor<T>): T | null;
    /**
     * get component of componentCtor: ComponentConstructor<T> in the GameObject
     * @param componentCtor
     * @returns if success, return the component instance
     */
    getComponent<T extends Component>(componentCtor: ComponentConstructor<T>): T | null;
    /**
     * get all components in the GameObject
     */
    getComponents(): Component[];
    /**
     * get components of componentCtor: ComponentConstructor<T> in the GameObject
     * @param componentCtor
     * @returns
     */
    getComponents<T extends Component>(componentCtor: ComponentConstructor<T>): T[];
    /**
     * returns the component of componentCtor: ComponentConstructor<T> in the GameObject or any of its children using depth first search
     * @param componentCtor
     * @returns
     */
    getComponentInChildren<T extends Component>(componentCtor: ComponentConstructor<T>): T | null;
    /**
     * returns all components in the GameObject or any of its children using depth first search
     */
    getComponentsInChildren(): Component[];
    /**
     * returns all components of componentCtor: ComponentConstructor<T> in the GameObject or any of its children using depth first search
     * @param componentCtor
     */
    getComponentsInChildren<T extends Component>(componentCtor: ComponentConstructor<T>): T[];
    private _destroyed;
    /**
     * destroy the GameObject
     */
    destroy(): void;
    private static destroyRecursively;
    private destroyEventProcess;
    /**
     * global engine object
     */
    get engine(): EngineGlobalObject;
    /**
     * defines whether the GameObject is active in the Scene
     */
    get activeInHierarchy(): boolean;
    private set activeInHierarchy(value);
    private setActiveInHierarchyWithEvent;
    /**
     * defines whether the GameObject is active in the Scene
     */
    get activeSelf(): boolean;
    /**
     * defines whether the GameObject is active in the Scene
     */
    set activeSelf(value: boolean);
    /**
     * get transform of the GameObject
     */
    get transform(): Transform;
    /**
     * get name of the GameObject
     */
    get name(): string;
    /**
     * set name of the GameObject
     */
    set name(value: string);
    /**
     * get instance id of the GameObject
     */
    get instanceId(): number;
    /**
     * if instantiate process is finished, this will be true
     */
    get initialized(): boolean;
    /**
     * does the gameobject exist?
     */
    get exists(): boolean;
    private checkGameObjectIsExist;
}