import type { Tile } from "./tacticalGrid.js";
export interface SurfaceKindDef {
    id: string;
    duration?: number;
}
export interface SurfaceReaction {
    when: readonly [string, string];
    result: string | null;
}
export interface SurfaceLayerConfig {
    kinds: readonly SurfaceKindDef[];
    reactions?: readonly SurfaceReaction[];
}
export interface SurfacePatch {
    duration?: number;
}
export type SurfaceEvent = {
    kind: "apply";
    tile: Tile;
    surface: string;
} | {
    kind: "react";
    tile: Tile;
    consumed: readonly [string, string];
    produced: string | null;
} | {
    kind: "expire";
    tile: Tile;
    surface: string;
};
export interface SurfaceCellKind {
    surface: string;
    remaining: number | null;
}
export interface SurfaceCell {
    tile: Tile;
    kinds: SurfaceCellKind[];
}
export type SurfaceLayerSnapshot = Record<string, Record<string, number | null>>;
export interface SurfaceLayer {
    apply(tile: Tile, surface: string, patch?: SurfacePatch): SurfaceEvent[];
    has(tile: Tile, surface: string): boolean;
    kindsAt(tile: Tile): string[];
    remove(tile: Tile, surface: string): void;
    clearTile(tile: Tile): void;
    clear(): void;
    tick(dt: number): SurfaceEvent[];
    cells(): SurfaceCell[];
    capture(): SurfaceLayerSnapshot;
    restore(snapshot: SurfaceLayerSnapshot): void;
}
/** @internal */
export declare function createSurfaceLayer(config: SurfaceLayerConfig): SurfaceLayer;