import type { FishMarineLife } from "../../domain/models/OceanModels.js";
import type { FishMood, MoodVisuals } from "../../domain/types/fish-personality-types.js";
import type { IFishMoodManager } from "../contracts/IFishMoodManager.js";
/**
 * FishMoodManager - Manages emotional state transitions for fish
 *
 * Handles mood decay, energy/hunger metabolism, stimulus responses,
 * and provides visual modifiers for rendering.
 */
export declare class FishMoodManager implements IFishMoodManager {
    private static DEBUG_MOOD;
    updateMood(fish: FishMarineLife, deltaSeconds: number): void;
    getMoodVisuals(fish: FishMarineLife): MoodVisuals;
    setMood(fish: FishMarineLife, mood: FishMood): void;
    markStimulus(fish: FishMarineLife, type: "food" | "threat" | "friend" | "novelty"): void;
    shouldTransitionBehavior(fish: FishMarineLife): boolean;
    private updateMetabolism;
    private checkAutomaticTransitions;
    private decayMood;
    /**
     * Get the mood to decay to (allows step-down transitions)
     */
    private getDecayMood;
}
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