import type Renderer from "../../video/renderer.js";
import type Camera2d from "../camera2d.ts";
/**
 * Base class for camera effects (shake, fade, flash, transitions, etc.).
 * Subclasses implement update() for per-frame logic and/or draw() for rendering overlays.
 * Effects are automatically removed from the camera when isComplete becomes true.
 * @category Camera
 */
export default class CameraEffect {
    /**
     * the camera this effect is attached to
     */
    camera: Camera2d;
    /**
     * whether this effect has finished and should be removed
     */
    isComplete: boolean;
    /**
     * whether this effect should persist across camera/game resets
     * (e.g. transition effects that span state changes)
     * @default false
     */
    isPersistent: boolean;
    /**
     * @param camera - the camera this effect is attached to
     */
    constructor(camera: Camera2d);
    /**
     * Called each frame to update the effect state (e.g. modify camera offset, countdown duration).
     * @param _dt - time elapsed since last frame in milliseconds
     */
    update(_dt: number): void;
    /**
     * Called after the scene renders to draw visual overlays (e.g. color fills for fading).
     * @param _renderer - the renderer to draw with
     * @param _width - the camera viewport width
     * @param _height - the camera viewport height
     */
    draw(_renderer: Renderer, _width: number, _height: number): void;
    /**
     * Called when the effect is removed from the camera. Override to clean up resources.
     */
    destroy(): void;
}
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