/**
 * IUFOExitAnimator - Handles UFO exit animation logic
 *
 * Pure animation calculator for UFO departure effects.
 * Supports fade, warp, zoom, and shootUp exit types.
 */
import type { UFOExitType } from "../domain/ufo-types.js";
/**
 * Input state for exit animation calculation
 */
export interface ExitAnimationInput {
    stateTimer: number;
    exitDuration: number;
    exitType: UFOExitType;
    currentY: number;
    size: number;
    speedMult: number;
}
/**
 * Result of exit animation calculation
 */
export interface ExitAnimationResult {
    opacity: number;
    scale: number;
    flashIntensity: number;
    yDelta: number;
    isComplete: boolean;
}
export interface IUFOExitAnimator {
    /**
     * Calculate exit animation state based on progress
     * Pure function - no side effects
     */
    calculate(input: ExitAnimationInput): ExitAnimationResult;
}
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