/**
 * The Deep Seam (slice 1 of dreadwoods-backend/COVERAGE_1_40.md, T101, 2026-10-14): a scaled random-spawn dungeon led by ore,
 * built on the Random World Events engine (worldEvents.ts) with the frozen dungeons' scaling (worldEventScaling.ts). A collapsed
 * mine shaft opens somewhere on the east side of the overworld (never in the Dreadwoods PvP woods); you go down for ten minutes
 * and work the seams of a drift that gets richer the deeper your Mining goes:
 *
 * - the Landing and the Sump Hall (every Mining level): copper and tin, and the way on;
 * - the Iron Gallery (Mining 11-20): a rubble heap you shift with Mining 11 opens the way to the iron seams (iron needs Mining 15);
 * - the Coal Drift (Mining 21-30): a rock fall you shift with Mining 21 opens the coal (Mining 22) and more iron;
 * - the Vein Hall (Mining 31-40): a sealed bulkhead you break with Mining 31 opens gold (Mining 30) and silver (Mining 33);
 * - the Heart Chamber: the Deep Seam Worm (an existing rockworm) guards the Seam Cache; its lunge is announced a turn ahead
 *   (step out of the ring), and the cache opens once the first rubble heap is shifted (Mining 11), so ore leads.
 *
 * Mining itself is the game's own (the real handler, the real levels and pickaxes): the seams are ordinary `orerock`, so each
 * ore keeps its own Mining level, pickaxe tier, XP and respawn. The rubble heap and rock falls are gated by Mining level through
 * the engine's `work` (the same way the Trapper Hollow's roots are gated by Woodwork).
 *
 * The cave-in is the dungeon's clock (`caveIn`): never rolled, read from the run's own clock. Every minute the roof groans a few
 * seconds before it lets go (a chat warning), and everyone standing outside a braced alcove (the lamp-lit refuges, and the Landing
 * and Sump Hall) takes a share of their own health, never leaving them below 1 (the step-clear counter: be in a refuge when it falls).
 *
 * Every number is a PLACEHOLDER for the balance pass. The pieces are the Goblin Sapper Tunnel's kit models (stand-ins).
 */
import type { WorldEventCaveIn, WorldEventDef } from './worldEvents.js';
/** The entrance model (5 x 3): a copy of the Goblin Sapper Tunnel's mouth until the Deep Seam has its own Blender build (upgrades list). */
export declare const DEEP_SEAM_ENTRANCE_MODEL = "evdeepseamshaft";
/** The combat level the shaft lets you in at (the scaled band's floor; the standard gate says it, areaGates.ts). */
export declare const DEEP_SEAM_MIN_COMBAT = 10;
export declare const DEEP_SEAM_MINUTES = 10;
/** Mining levels that open the rubble heap, the rock fall and the bulkhead (tiers 11-20, 21-30, 31-40). */
export declare const DEEP_SEAM_TIERS: {
    readonly rubble: 11;
    readonly rockfall: 21;
    readonly bulkhead: 31;
};
export declare const DEEP_SEAM: WorldEventDef;
/**
 * The cave-in's clock, read not rolled (the step-clear counter): how many warnings and falls have come by `elapsedMs` into the run.
 * Warning k comes `warnMs` before fall k; fall k at `firstMs + k * everyMs`.
 */
export declare function caveInWarnings(spec: Pick<WorldEventCaveIn, 'firstMs' | 'everyMs' | 'warnMs'>, elapsedMs: number): number;
export declare function caveInFalls(spec: Pick<WorldEventCaveIn, 'firstMs' | 'everyMs'>, elapsedMs: number): number;
/** Is this tile under a braced roof (a refuge, or one of the safe rooms)? Tiles off every floor are not anywhere at all. */
export declare function caveInSafe(def: Pick<WorldEventDef, 'caveIn' | 'rooms'>, x: number, z: number): boolean;
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