/**
 * THE GULL'S MAP, part 2: LOW WATER (levels 20-28; plan C9, 2026-10-14; design sheets `gulls-map-5`, `-6` and `-8` in the backend's
 * design-references). Keeper Ada at Saltmark Light reads the Captain's tide table: the Blackwakes' cache lies in the Sea Grotto,
 * whose stepping stones can only be crossed at low water, in order; the drowned crew guard it; the cache holds the signal lantern,
 * and a lantern signal from Saltmark at night is answered from Fort Rook.
 *
 * Every number is in the GENERATOR frame (as gullsMap.ts and southExpansion.ts): the backend places the props through its south
 * kit, and expandedContracts.ts shifts the quest's reach area and helper points.
 *
 * The Sea Grotto is a surface tidal basin (rock rim, sand floor, two pools, an inner ledge), not yet a roofed cave in the
 * underground strip: NEXT_STEPS "The Gull's Map" keeps that as the roofed-cave variant for later.
 */
import type { GullsMapProp } from './gullsMap.js';
export declare const GULLS_LOW_WATER_QUEST_ID = "gullsLowWater";
export declare const GULLS_LOW_WATER_QUEST_NAME = "The Gull's Map: Low Water";
export declare const KEEPER_ADA_NAME = "Keeper Ada";
/** The Blackwakes' signal lantern, out of the cache in the Sea Grotto. */
export declare const SIGNAL_LANTERN_KIND = "signallantern";
export declare const GULLS_LOW_WATER_ITEM_KINDS: readonly string[];
export declare const GULLS_LOW_WATER_ITEM_NAMES: Readonly<Record<string, string>>;
/**
 * The grotto's tide, a fixed schedule on the wall clock (UTC ms since the epoch, as Date.now() gives it), the same for every
 * player and every restart, with no state to save: every ten minutes the sea is high for 200 s, drops through a 60 s ebb to
 * 240 s of low water, then rises through a 60 s flood and is high again. The stepping stones can only be crossed at low water.
 */
export declare const SEA_GROTTO_TIDE_CYCLE_MS = 600000;
export type SeaGrottoTidePhase = 'high' | 'ebb' | 'low' | 'flood';
export declare function seaGrottoTide(nowMs: number): {
    phase: SeaGrottoTidePhase;
    msUntilLow: number;
    msLeftLow: number;
};
export declare const isSeaGrottoLowWater: (nowMs: number) => boolean;
/** "about 3 minutes" / "about 40 seconds". */
export declare function waitText(ms: number): string;
/** The tide gauge's line (the post at the grotto's mouth, readable any time, quest or not). */
export declare function seaGrottoTideLine(nowMs: number): string;
/** Saltmark Light's lamp is lit from 18:00 to 06:00 UTC (the client's saltmarkLamp.ts clock); the signal can only be sent then. */
export declare const SALTMARK_LAMP_LIT_FROM_HOUR = 18;
export declare const SALTMARK_LAMP_LIT_UNTIL_HOUR = 6;
export declare function isSaltmarkLampLit(nowMs: number): boolean;
/** The rim's outer box (generator frame): a rim two tiles thick round the floor, one mouth in the south wall. */
export declare const SEA_GROTTO_BOX: {
    readonly minX: 614;
    readonly maxX: 640;
    readonly minZ: 944;
    readonly maxZ: 962;
};
export declare const SEA_GROTTO_FLOOR: {
    readonly minX: 616;
    readonly maxX: 638;
    readonly minZ: 946;
    readonly maxZ: 960;
};
/** The mouth: three tiles wide through the south rim, down onto the sand. */
export declare const SEA_GROTTO_MOUTH: {
    readonly minX: 626;
    readonly maxX: 628;
    readonly minZ: 961;
    readonly maxZ: 962;
};
/** Where the helper points and the reach step counts (the first tiles inside the mouth). */
export declare const SEA_GROTTO_AT: {
    readonly x: 627;
    readonly z: 959;
    readonly label: "the Sea Grotto";
};
export declare const SEA_GROTTO_REACH: {
    readonly minX: 624;
    readonly maxX: 630;
    readonly minZ: 957;
    readonly maxZ: 960;
};
/** Two pools of sea water on the floor (ellipses: centre, radii in tiles). */
export declare const SEA_GROTTO_POOLS: ReadonlyArray<{
    cx: number;
    cz: number;
    rx: number;
    rz: number;
}>;
/** The inner ledge above the high-tide mark: the cache stands on it. */
export declare const SEA_GROTTO_LEDGE: {
    readonly minX: 635;
    readonly maxX: 638;
    readonly minZ: 946;
    readonly maxZ: 949;
};
export declare function inSeaGrottoPool(x: number, z: number): boolean;
/** The three drowned deckhands in the grotto (spawn tiles; they are leashed to them). */
export declare const SEA_GROTTO_DROWNED: ReadonlyArray<readonly [number, number]>;
export declare const GM_PROP2: {
    /** The seven numbered stepping stones, in crossing order. */
    readonly stone: "gmstone";
    /** The Blackwakes' cache on the inner ledge. */
    readonly cache: "gmcache";
    /** The gauge post at the grotto's mouth: tells the tide any time. */
    readonly gauge: "gmgauge";
    /** Ada's lamp-oil cask by the lighthouse door. */
    readonly oil: "gmoil";
    /** The lamp at the foot of Saltmark Light (the signal). */
    readonly lamp: "gmlamp";
    /** The seaward rail, where Fort Rook's answer is watched for. */
    readonly answer: "gmanswer";
};
/** The route across the grotto: west round the south shore, up the west side, along the north and onto the ledge. */
export declare const GM_STONES: readonly GullsMapProp[];
export declare const GM_STONE_ORDER: readonly string[];
export declare const GM_CACHE: GullsMapProp;
export declare const GM_GAUGE: GullsMapProp;
/** Saltmark Light (door south, tower 886-894 x 944-950; Ada at 895,951): the cask, the lamp and the rail. */
export declare const GM_OIL_CASK: GullsMapProp;
export declare const GM_LAMP: GullsMapProp;
export declare const GM_ANSWER: GullsMapProp;
export declare const GULLS_LOW_WATER_QUEST_PROPS: readonly GullsMapProp[];
/** The model a part 2 prop draws with (dreadmodel names; stand-ins from the events kit and the quest set). */
export declare function gullsLowWaterPropModel(prop: string): string | null;
export declare const GULLS_LOW_WATER_PROP_NAMES: Readonly<Record<string, string>>;
//# sourceMappingURL=gullsLowWater.d.ts.map