import { DayPhase, TimeHudOptions, TimeHudPosition, TimeState } from '@rpgjs/common';
/** Colors of the sky at an hour, `0` to `24` (decimals are minutes). */
export declare function skyColors(hour: number): {
    top: string;
    horizon: string;
    sea: string;
};
/** How dark it is, `0` (day) to `1` (night): the stars show with it. */
export declare function darkness(hour: number, phase: DayPhase): number;
export interface SkyBody {
    /** Position in the sky box, `0` to `1` from the left. */
    x: number;
    /** `0` is the top of the sky, `1` the horizon: more than `1` is under it. */
    y: number;
    visible: boolean;
}
/** The sun rises on the left at 6:00, is at the top at 12:00 and sets on the right at 18:00. The moon does the same 12 hours later. */
export declare function bodyAt(hour: number, moon: boolean): SkyBody;
export interface TimeHudView {
    phase: DayPhase;
    /** `14:05` */
    clock: string;
    /** Days since the start, from `1`. */
    day: number;
    badge: "" | "paused" | "fast";
    position: TimeHudPosition;
    size: "default" | "compact";
    /** The sky as CSS custom properties, for the `rpg-ui-clock` styles. */
    style: string;
}
export declare function resolveHudOptions(hud: boolean | TimeHudOptions | undefined): Required<Omit<TimeHudOptions, "fastScale">> & {
    fastScale?: number;
};
/** What the clock shows for a time state. */
export declare function buildHudView(state: TimeState, options: ReturnType<typeof resolveHudOptions>): TimeHudView;