/**
 * Isometric Depth Sort Plugin for ECSpresso
 *
 * Sets PixiJS `zIndex` on entities based on their world-space position,
 * ensuring correct visual overlap in isometric rendering. Entities with
 * higher world X + Y values render in front.
 *
 * Requires `rootContainer` from the renderer2D plugin.
 * Enables `sortableChildren` on the root container at initialization.
 */
import type { BasePluginOptions } from 'ecspresso';
import type { ComponentsConfig, ResourcesConfig } from '../../type-utils';
import type { TransformComponentTypes } from '../spatial/transform';
import type { Renderer2DComponentTypes, Renderer2DResourceTypes } from '../rendering/renderer2D';
/**
 * Optional component that offsets an entity's depth sort value.
 * Entities with a positive depthOffset render in front of entities
 * at the same world position (e.g., a player on top of a ground tile).
 */
export interface IsoDepthSortComponentTypes {
    depthOffset: number;
}
type IsoDepthSortRequires = ComponentsConfig<TransformComponentTypes & Pick<Renderer2DComponentTypes, 'sprite' | 'graphics' | 'container'>> & ResourcesConfig<Renderer2DResourceTypes>;
export interface IsoDepthSortPluginOptions<G extends string = 'isometric'> extends BasePluginOptions<G> {
    /** Custom depth function. Receives world-space x/y, returns a sort key.
     *  Default: `(x, y) => x + y` */
    depthFn?: (worldX: number, worldY: number) => number;
}
/**
 * Create an isometric depth sort plugin.
 *
 * Adds a render-phase system that sets PixiJS `zIndex` based on world-space
 * position, enabling correct front-to-back ordering in isometric views.
 *
 * @example
 * ```typescript
 * const ecs = ECSpresso.create()
 *   .withPlugin(createRenderer2DPlugin({ ... }))
 *   .withPlugin(createIsoDepthSortPlugin())
 *   .build();
 * ```
 */
export declare function createIsoDepthSortPlugin<G extends string = 'isometric'>(options?: IsoDepthSortPluginOptions<G>): import("ecspresso").Plugin<import("ecspresso").WithComponents<import("ecspresso").EmptyConfig, IsoDepthSortComponentTypes>, IsoDepthSortRequires, never, G, never, never>;
export {};