import type { IFishSpriteManager, PreRenderedSprite } from "../contracts/IFishSpriteManager.js";
export declare class FishSpriteManager implements IFishSpriteManager {
    private readonly baseSprites;
    private readonly colorVariants;
    /** Pre-rendered sprites (base + variants), ready for immediate drawing */
    private preRenderedSprites;
    /** Raw image cache for base sprites */
    private baseImageCache;
    private ready;
    preloadSprites(): Promise<void>;
    private loadBaseImages;
    private preRenderAllVariants;
    /**
     * Create a pre-rendered canvas with hue rotation applied once.
     * Uses OffscreenCanvas when available for better performance.
     */
    private createPreRenderedCanvas;
    getRandomSpriteEntry(): PreRenderedSprite | undefined;
    getAnyLoadedSpriteEntry(): PreRenderedSprite | undefined;
    getMarineLifeColor(type: "fish" | "jellyfish"): string;
    isReady(): boolean;
}
//# sourceMappingURL=FishSpriteManager.d.ts.map