# Internal Package: openttd

This directory contains the core implementation of the OpenTTD network client.

## Modules

-   **`__init__.py`**: Exposes the high-level `OpenTTDClient` API.
-   **`client.py`**: Implementation of the `OpenTTDClient` class. Manages the connection lifecycle, PAKE state, map synchronization, and keep-alive.
-   **`protocol.py`**: Implementation of the `OpenTTDProtocol` class. Handles low-level binary packet serialization, AEAD stream encryption, and static packet parsing.

## Design Goals
1.  **Encapsulation:** The user should never need to manually handle bytes or encryption keys.
2.  **Robustness:** Gracefully handle server errors and unknown packet types.
3.  **Efficiency:** Use `asyncio` for non-blocking I/O and `monocypher` for fast cryptographic operations.