/**
 * Zork LLM Engine
 *
 * Runs Zork I (or any Z-machine story file) as a headless subprocess via the
 * `ifvms` CLI, and wraps every I/O exchange with OpenRouter LLM calls that
 * translate free natural-language player input into parser commands and
 * re-voice the Z-machine's raw output as polished narrative prose.
 *
 * Configuration (environment variables):
 *   ZORK_STORY_FILE  – path to the .z5/.z8/.bin story file (default: ./data/z-code/zork1.bin)
 *   ZORK_MAX_RETRIES – maximum command retry attempts per turn  (default: 3)
 *   ZORK_HISTORY_SIZE – player-facing outputs stored per room   (default: 5)
 *   OPENROUTER_API_KEY, OPENROUTER_MODEL – required
 */
import { TurnResult } from '../interfaces/turn-result';
export interface ZorkSession {
    characterDescription: string;
    notes: string[];
    recentParagraphs: string[];
    rawTranscript: string[];
    turnCount: number;
    timeOfDay: string;
    weather: string;
    virtualInventory: string[];
    /** roomName → last N player-facing output strings */
    roomHistory: Record<string, string[]>;
    currentRoom: string;
    running: boolean;
}
export type ZorkTurnResult = TurnResult;
export declare class ZorkLlmEngine {
    private zork;
    private session;
    private prompts;
    private llm;
    private model;
    private resolvedFallbackModel;
    private llmCallCounter;
    private maxRetries;
    private historySize;
    private nextTurnId;
    private storyPath;
    private static readonly DEPRECATED_MODEL_REPLACEMENTS;
    constructor(options?: {
        storyPath?: string;
        promptDir?: string;
    });
    private createCompletion;
    private resolveFallbackModel;
    isRunning(): boolean;
    /**
     * Start a new game: launch Zork, generate the player character, rewrite the
     * intro text, and return the first TurnResult for the client.
     */
    newGame(): Promise<ZorkTurnResult>;
    /**
     * Process player free-text input. Returns the next TurnResult.
     */
    processInput(userInput: string): Promise<ZorkTurnResult>;
    private runCommandPlan;
    /**
     * Save the current game state. Returns a JSON string suitable for storing
     * in the socket's save-game slot map.
     */
    saveGame(): Promise<string>;
    /**
     * Load a previously saved game. Returns the first TurnResult after restore.
     */
    loadGame(savedJson: string): Promise<ZorkTurnResult>;
    private runSingleCommandLoop;
    private generateCharacter;
    private rewriteText;
    private translateCommand;
    private evaluateOutput;
    private executeTool;
    private appendRecentParagraph;
    private extractCommands;
    private appendRawTranscript;
    private advanceNarratorState;
    private getDeterministicCommandPlan;
    private appendRoomHistory;
    private buildCommonVars;
    private buildTurnResult;
}