import { GameData } from '.';
import { Cell, CellSaveState } from './engine';
import { GameMetadata } from './models/metadata';
import { A11Y_MESSAGE } from './models/rule';
import { GameSprite } from './models/tile';
import { Soundish } from './parser/astTypes';
export declare type Optional<T> = T | null;
export declare enum RULE_DIRECTION {
    UP = "UP",
    DOWN = "DOWN",
    LEFT = "LEFT",
    RIGHT = "RIGHT",
    ACTION = "ACTION",
    STATIONARY = "STATIONARY",
    RANDOMDIR = "RANDOMDIR"
}
export declare enum INPUT_BUTTON {
    UP = "UP",
    DOWN = "DOWN",
    LEFT = "LEFT",
    RIGHT = "RIGHT",
    ACTION = "ACTION",
    UNDO = "UNDO",
    RESTART = "RESTART"
}
export declare enum RULE_DIRECTION_RELATIVE {
    RELATIVE_LEFT = "<",
    RELATIVE_RIGHT = ">",
    RELATIVE_UP = "^",
    RELATIVE_DOWN = "V"
}
export declare type RULE_DIRECTION_WITH_RELATIVE = RULE_DIRECTION | RULE_DIRECTION_RELATIVE;
export declare function _flatten<T>(arrays: T[][]): T[];
export declare function _debounce(callback: () => any): () => void;
export declare function opposite(dir: RULE_DIRECTION): RULE_DIRECTION.UP | RULE_DIRECTION.DOWN | RULE_DIRECTION.LEFT | RULE_DIRECTION.RIGHT;
export declare function setEquals<T>(set1: Set<T>, set2: Set<T>): boolean;
export declare function setAddAll<T>(setA: Set<T>, iterable: Iterable<T>): Set<T>;
export declare function setIntersection<T>(setA: Set<T>, setB: Iterable<T>): Set<T>;
export declare function setDifference<T>(setA: Set<T>, setB: Iterable<T>): Set<T>;
export declare function nextRandom(maxNonInclusive: number): number;
export declare function resetRandomSeed(): void;
export declare function setRandomValuesForTesting(values: number[]): void;
export declare function clearRandomValuesForTesting(): void;
export declare function getRandomSeed(): number;
/**
 * A `DEBUGGER` flag in the game source that causes the evaluation to pause.
 * It works like the
 * [debugger](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/debugger)
 * keyword in JavaScript.
 *
 * **Note:** the game needs to run in debug mode (`node --inspect-brk path/to/puzzlescript.js` or `npm run play-debug`)
 * for this flag to have any effect.
 *
 * This string can be added to:
 *
 * - A Rule. Example: `DEBUGGER [ > player | cat ] -> [ > player | > cat ]`
 * - A bracket when the condition is updated: `[ > player | cat ] DEBUGGER -> [ > player | > cat ]`
 * - A bracket when it is evaluated: `[ > player | cat ] -> [ > player | > cat ] DEBUGGER`
 * - A neighbor when the condition is updated: `[ > player DEBUGGER | cat ] -> [ > player | > cat ]`
 * - A neighbor when it is evaluated: `[ > player | cat ] -> [ > player | > cat DEBUGGER ]`
 * - A tile when the condition is updated: `[ > player | DEBUGGER cat ] -> [ > player | > cat ]`
 * - A tile when it is matched: `[ > player | cat ] -> [ > player | DEBUGGER > cat ]`
 */
export declare enum DEBUG_FLAG {
    BREAKPOINT = "DEBUGGER",
    /**
     * Pause when a Cell causes an entry to be removed from the set of matches for this rule/bracket/neighbor/tile
     */
    BREAKPOINT_REMOVE = "DEBUGGER_REMOVE"
}
export interface ICacheable {
    toKey: () => string;
}
export declare function spritesThatInteractWithPlayer(game: GameData): Set<GameSprite>;
export declare function pollingPromise<T>(ms: number, fn: () => T): Promise<T>;
export interface TypedMessageEvent<T> extends MessageEvent {
    data: T;
}
export declare enum MESSAGE_TYPE {
    PAUSE = "PAUSE",
    RESUME = "RESUME",
    TICK = "TICK",
    PRESS = "PRESS",
    CLOSE = "CLOSE",
    ON_GAME_CHANGE = "ON_GAME_CHANGE",
    ON_PRESS = "ON_PRESS",
    ON_MESSAGE = "ON_MESSAGE",
    ON_MESSAGE_DONE = "ON_MESSAGE_DONE",
    ON_LEVEL_LOAD = "ON_LEVEL_LOAD",
    ON_LEVEL_CHANGE = "ON_LEVEL_CHANGE",
    ON_WIN = "ON_WIN",
    ON_SOUND = "ON_SOUND",
    ON_TICK = "ON_TICK",
    ON_PAUSE = "ON_PAUSE",
    ON_RESUME = "ON_RESUME"
}
export interface CellishJson {
    colIndex: number;
    rowIndex: number;
    spriteNames: string[];
}
export interface SerializedTickResult {
    changedCells: CellishJson[];
    soundToPlay: Optional<number>;
    messageToShow: Optional<string>;
    didWinGame: boolean;
    didLevelChange: boolean;
    wasAgainTick: boolean;
    a11yMessages: A11Y_MESSAGE<CellishJson, string>;
}
export declare type WorkerMessage = {
    type: MESSAGE_TYPE.ON_GAME_CHANGE;
    code: ArrayBuffer;
    level: number;
    checkpoint: Optional<CellSaveState>;
} | {
    type: MESSAGE_TYPE.PRESS;
    button: INPUT_BUTTON;
} | {
    type: MESSAGE_TYPE.CLOSE;
} | {
    type: MESSAGE_TYPE.PAUSE;
} | {
    type: MESSAGE_TYPE.RESUME;
} | {
    type: MESSAGE_TYPE.ON_MESSAGE_DONE;
};
export declare type WorkerResponse = {
    type: MESSAGE_TYPE.ON_GAME_CHANGE;
    payload: ArrayBuffer;
} | {
    type: MESSAGE_TYPE.TICK;
    payload: SerializedTickResult;
} | {
    type: MESSAGE_TYPE.PRESS;
    payload: void;
} | {
    type: MESSAGE_TYPE.CLOSE;
    payload: void;
} | {
    type: MESSAGE_TYPE.PAUSE;
    payload: void;
} | {
    type: MESSAGE_TYPE.RESUME;
    payload: void;
} | {
    type: MESSAGE_TYPE.ON_PRESS;
    direction: INPUT_BUTTON;
} | {
    type: MESSAGE_TYPE.ON_MESSAGE;
    message: string;
} | {
    type: MESSAGE_TYPE.ON_LEVEL_LOAD;
    level: number;
    levelSize: Optional<{
        rows: number;
        cols: number;
    }>;
} | {
    type: MESSAGE_TYPE.ON_LEVEL_CHANGE;
    level: number;
    cells: Optional<CellishJson[][]>;
    message: Optional<string>;
} | {
    type: MESSAGE_TYPE.ON_WIN;
} | {
    type: MESSAGE_TYPE.ON_PAUSE;
} | {
    type: MESSAGE_TYPE.ON_RESUME;
} | {
    type: MESSAGE_TYPE.ON_SOUND;
    soundCode: number;
} | {
    type: MESSAGE_TYPE.ON_TICK;
    changedCells: CellishJson[];
    checkpoint: Optional<CellSaveState>;
    hasAgain: boolean;
    a11yMessages: Array<A11Y_MESSAGE<CellishJson, string>>;
};
export interface PuzzlescriptWorker {
    postMessage(msg: WorkerMessage, transferrables?: Transferable[]): void;
    addEventListener(type: 'message', handler: (msg: {
        data: WorkerResponse;
    }) => void): void;
}
export declare const shouldTick: (metadata: GameMetadata, lastTick: number) => boolean;
export interface Cellish {
    colIndex: number;
    rowIndex: number;
    getSprites(): GameSprite[];
    getSpritesAsSet(): Set<GameSprite>;
    getWantsToMove(sprite: GameSprite): Optional<RULE_DIRECTION>;
}
export interface GameEngineHandler {
    onGameChange(gameData: GameData): void;
    onPress(dir: INPUT_BUTTON): void;
    onMessage(msg: string): Promise<void>;
    onLevelLoad(level: number, newLevelSize: Optional<{
        rows: number;
        cols: number;
    }>): void;
    onLevelChange(level: number, cells: Optional<Cellish[][]>, message: Optional<string>): void;
    onWin(): void;
    onSound(sound: Soundish): Promise<void>;
    onTick(changedCells: Set<Cellish>, checkpoint: Optional<CellSaveState>, hasAgain: boolean, a11yMessages: Array<A11Y_MESSAGE<Cell, GameSprite>>): void;
    onPause(): void;
    onResume(): void;
}
export interface GameEngineHandlerOptional {
    onGameChange?(gameData: GameData): void;
    onPress?(dir: INPUT_BUTTON): void;
    onMessage?(msg: string): Promise<void>;
    onLevelLoad?(level: number, newLevelSize: Optional<{
        rows: number;
        cols: number;
    }>): void;
    onLevelChange?(level: number, cells: Optional<Cellish[][]>, message: Optional<string>): void;
    onWin?(): void;
    onSound?(sound: Soundish): Promise<void>;
    onTick?(changedCells: Set<Cellish>, checkpoint: Optional<CellSaveState>, hasAgain: boolean, a11yMessages: Array<A11Y_MESSAGE<Cellish, GameSprite>>): void;
    onPause?(): void;
    onResume?(): void;
}
export declare class EmptyGameEngineHandler implements GameEngineHandler {
    private subHandlers;
    constructor(subHandlers?: GameEngineHandlerOptional[]);
    onGameChange(gameData: GameData): void;
    onPress(dir: INPUT_BUTTON): void;
    onMessage(msg: string): Promise<void>;
    onLevelLoad(level: number, newLevelSize: Optional<{
        rows: number;
        cols: number;
    }>): void;
    onLevelChange(level: number, cells: Optional<Cellish[][]>, message: Optional<string>): void;
    onWin(): void;
    onSound(sound: Soundish): Promise<void>;
    onTick(changedCells: Set<Cellish>, checkpoint: Optional<CellSaveState>, hasAgain: boolean, a11yMessages: Array<A11Y_MESSAGE<Cellish, GameSprite>>): void;
    onPause(): void;
    onResume(): void;
}
export interface Engineish {
    setGame(code: string, level: number, checkpoint: Optional<CellSaveState>): void;
    dispose(): void;
    pause?(): void;
    resume?(): void;
    press?(dir: INPUT_BUTTON): void;
    tick?(): void;
}