/**
 * Tetris game extension - play Tetris with /tetris command
 */
import type { ExtensionAPI } from "@earendil-works/pi-coding-agent";
export declare const BOARD_WIDTH = 10;
export declare const BOARD_HEIGHT = 20;
export declare const HIDDEN_ROWS = 4;
export declare const TOTAL_HEIGHT: number;
export declare const LEVEL_SPEEDS: number[];
export declare const LINES_PER_LEVEL = 10;
export declare const LINE_SCORES: Record<number, number>;
export type Shape = readonly (readonly number[])[];
export interface Position {
    x: number;
    y: number;
}
export interface PieceDef {
    name: string;
    color: string;
    rotations: readonly Shape[];
}
export interface Piece {
    def: PieceDef;
    rotation: number;
    pos: Position;
}
export interface GameState {
    board: number[][];
    current: Piece | null;
    next: PieceDef;
    score: number;
    lines: number;
    level: number;
    gameOver: boolean;
    highScore: number;
}
export declare const PIECE_DEFS: readonly PieceDef[];
export declare const PIECE_COLOR_MAP: Record<string, number>;
export declare function randomPiece(): PieceDef;
export declare function createBoard(): number[][];
export declare function getShape(piece: Piece): Shape;
export declare function getPieceCells(piece: Piece): Position[];
export declare function isValidPlacement(board: number[][], cells: Position[]): boolean;
export declare function tryMove(board: number[][], piece: Piece, dx: number, dy: number): Piece | null;
export declare function tryRotate(board: number[][], piece: Piece): Piece | null;
export declare function hardDrop(board: number[][], piece: Piece): Piece;
export declare function lockPiece(board: number[][], piece: Piece): number[][];
export declare function clearLines(board: number[][]): {
    board: number[][];
    linesCleared: number;
};
export declare function calculateScore(linesCleared: number, level: number): number;
export declare function calculateLevel(totalLines: number): number;
export declare function getSpeed(level: number): number;
export declare function isGameOver(board: number[][], def: PieceDef): boolean;
export declare function createPiece(def: PieceDef): Piece;
export declare function createInitialState(highScore?: number): GameState;
export default function (pi: ExtensionAPI): void;
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