import { RpgClientEngine } from './RpgClientEngine';
/**
 * RpgResource class
 *
 * Provides a unified API to access resource file links (images and sounds) in the game.
 * Resources are stored as Maps of resource IDs to file paths/URLs.
 *
 * ## Design
 *
 * RpgResource acts as a facade over the engine's resource storage, providing
 * easy access to resource file links. It maintains Maps that are synchronized
 * with the engine's internal storage, but only stores the file paths/URLs,
 * not the full resource objects.
 *
 * @example
 * ```ts
 * import { RpgResource } from '@rpgjs/client'
 *
 * // Get spritesheet image link
 * const imageLink = RpgResource.spritesheets.get('hero')
 *
 * // Get sound file link
 * const soundLink = RpgResource.sounds.get('town-music')
 *
 * // Set a new resource link
 * RpgResource.spritesheets.set('new-sprite', './assets/new-sprite.png')
 * ```
 */
export declare class RpgResource {
    private static engine;
    private static _spritesheets;
    private static _sounds;
    /**
     * Initialize RpgResource with the engine instance
     *
     * This is called automatically by the engine during initialization.
     * It synchronizes the resource Maps with the engine's internal storage.
     *
     * @param engine - The RpgClientEngine instance
     */
    static init(engine: RpgClientEngine): void;
    /**
     * Synchronize resource Maps with the engine's internal storage
     *
     * Extracts file links from spritesheets and sounds stored in the engine
     * and updates the Maps accordingly.
     *
     * @private
     */
    private static syncResources;
    /**
     * Get/Set image links for spritesheets
     *
     * Map of spritesheet IDs to their image file paths/URLs.
     * This Map is synchronized with the engine's spritesheet storage.
     *
     * @type {Map<string, string>}
     *
     * @example
     * ```ts
     * // Get an image link
     * const imageLink = RpgResource.spritesheets.get('hero')
     *
     * // Set a new image link
     * RpgResource.spritesheets.set('new-sprite', './assets/new-sprite.png')
     *
     * // Check if a spritesheet exists
     * if (RpgResource.spritesheets.has('monster')) {
     *   const link = RpgResource.spritesheets.get('monster')
     * }
     * ```
     */
    static get spritesheets(): Map<string, string>;
    /**
     * Get/Set sound file links
     *
     * Map of sound IDs to their audio file paths/URLs.
     * This Map is synchronized with the engine's sound storage.
     *
     * @type {Map<string, string>}
     *
     * @example
     * ```ts
     * // Get a sound link
     * const soundLink = RpgResource.sounds.get('town-music')
     *
     * // Set a new sound link
     * RpgResource.sounds.set('new-sound', './assets/new-sound.ogg')
     *
     * // Iterate over all sounds
     * RpgResource.sounds.forEach((link, id) => {
     *   console.log(`Sound ${id}: ${link}`)
     * })
     * ```
     */
    static get sounds(): Map<string, string>;
}