import type { FishMarineLife } from "../../domain/models/OceanModels.js";
import type { IFishSpineController } from "../contracts/IFishSpineController.js";
import type { IFishPropulsionCalculator } from "../contracts/IFishPropulsionCalculator.js";
import { SpineChain } from "../../physics/SpineChain.js";
/**
 * FishSpineController - Manages spine chain physics for organic swimming
 *
 * Handles spine chain lifecycle (create, update, remove) and synchronizes
 * physics state back to fish entities for rendering. Now includes propulsion
 * calculation to connect tail motion with forward movement.
 */
export declare class FishSpineController implements IFishSpineController {
    private spineChains;
    private propulsionCalculator;
    constructor(propulsionCalculator?: IFishPropulsionCalculator);
    initializeSpineChain(fish: FishMarineLife): void;
    updatePropulsion(fish: FishMarineLife, deltaSeconds: number): void;
    updateSpineChain(fish: FishMarineLife, deltaSeconds: number, frameMultiplier: number): void;
    getSpineChain(fish: FishMarineLife): SpineChain | undefined;
    removeSpineChain(fish: FishMarineLife): void;
    /**
     * Reposition a fish's spine chain to match updated fish.x/y
     * Call this after manually moving a fish's position
     */
    repositionSpineChain(fish: FishMarineLife, dx: number, dy: number): void;
    /**
     * Create fins attached to spine segments
     */
    private createSpineFins;
}
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