import type { FishMarineLife } from "../../domain/models/OceanModels.js";
import type { FishMood, MoodVisuals } from "../../domain/types/fish-personality-types.js";
/**
 * IFishMoodManager - Manages emotional state transitions for fish
 *
 * Moods affect behavior decisions and visual expression.
 * They decay over time back to 'calm' and can be triggered by stimuli.
 */
export interface IFishMoodManager {
    /**
     * Update mood state based on current conditions
     * Handles decay, energy/hunger effects, and stimulus timeout
     * @param fish - The fish to update
     * @param deltaSeconds - Time since last frame
     */
    updateMood(fish: FishMarineLife, deltaSeconds: number): void;
    /**
     * Get visual modifiers for the current mood
     * Used by renderers to adjust appearance
     * @param fish - The fish to query
     * @returns Visual modifier values
     */
    getMoodVisuals(fish: FishMarineLife): MoodVisuals;
    /**
     * Set mood directly (e.g., from external trigger)
     * @param fish - The fish to update
     * @param mood - The new mood
     */
    setMood(fish: FishMarineLife, mood: FishMood): void;
    /**
     * Mark that something interesting happened to this fish
     * Can trigger mood changes based on stimulus type
     * @param fish - The fish that experienced the stimulus
     * @param type - Type of stimulus
     */
    markStimulus(fish: FishMarineLife, type: "food" | "threat" | "friend" | "novelty"): void;
    /**
     * Check if a mood transition should occur based on conditions
     * @param fish - The fish to check
     * @returns Whether the fish should consider changing behavior
     */
    shouldTransitionBehavior(fish: FishMarineLife): boolean;
}
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