import { WonderlandEngine } from "@wonderlandengine/api";
import { VisualElement, VisualElementParams } from "./elements/visual_element.js";
import { VisualElementDefaultType } from "./elements/visual_element_types.js";
export declare class VisualManager {
    private readonly _myVisualElementPrototypeCreationCallbacks;
    private readonly _myVisualElementsTypeMap;
    private _myVisualElementLastID;
    private readonly _myVisualElementsToShow;
    private _myVisualElementsParent;
    private _myActive;
    private readonly _myObjectPoolManagerPrefix;
    private readonly _myTypePoolIDs;
    private readonly _myEngine;
    private _myDestroyed;
    constructor(engine?: Readonly<WonderlandEngine>);
    setActive(active: boolean): void;
    isActive(): boolean;
    start(): void;
    update(dt: number): void;
    /** `lifetimeSeconds` can be `null`, in that case the element will be drawn until cleared */
    draw(visualElementParams: VisualElementParams, lifetimeSeconds?: number | null, idToReuse?: unknown): unknown | null;
    getVisualElement(elementID: unknown): VisualElement | null;
    getVisualElementParams(elementID: unknown): VisualElementParams | null;
    getVisualElementID(visualElement: Readonly<VisualElement>): unknown;
    clearAllVisualElements(): void;
    clearVisualElement(elementID: unknown): void;
    allocateVisualElementType(visualElementType: unknown | VisualElementDefaultType, amount: number): void;
    addVisualElementType(visualElementType: unknown | VisualElementDefaultType, visuaElementPrototypeCreationCallback: () => VisualElement): void;
    removeVisualElementType(visualElementType: unknown | VisualElementDefaultType): void;
    private _updateDraw;
    private _getVisualElementFromPool;
    private _addVisualElementTypeToPool;
    private _addDefaultVisualElementTypes;
    private _getTypePoolID;
    private _releaseElement;
    private _getClassName;
    destroy(): void;
    isDestroyed(): boolean;
}