import { MissionThemeData } from "../types";
export declare class Tiles {
    themes: MissionThemeData[];
    currentTheme: MissionThemeData;
    lastTheme?: MissionThemeData;
    tiles: Array<{
        background: string;
        foreground?: string;
        size: number;
        themeChange?: boolean;
    }>;
    changeAt: number;
    constructor(themes: MissionThemeData[]);
    foreground(mission: number): string | undefined;
    background(mission: number): string | undefined;
    changeTheme(mission: number): boolean;
    fill(mission: number): void;
    randomTile(mission: number): {
        url: string;
        size: number;
    };
}