File size: 2,358 Bytes
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# All rights reserved.
#
# This source code is licensed under the BSD-style license found in the
# LICENSE file in the root directory of this source tree.
"""
Chess Environment HTTP Client.
This module provides the client for connecting to a Chess Environment server
over HTTP.
"""
from typing import Any, Dict, Optional
from openenv_core.client_types import StepResult
from openenv_core.env_server.types import State
from openenv_core.http_env_client import HTTPEnvClient
from .models import ChessAction, ChessObservation
class ChessEnv(HTTPEnvClient[ChessAction, ChessObservation]):
"""
HTTP client for the Chess Environment.
This client connects to a ChessEnvironment HTTP server and provides
methods to interact with it: reset(), step(), and state access.
Example:
>>> client = ChessEnv(base_url="http://localhost:8000")
>>> result = client.reset()
>>> print(result.observation.board_fen)
>>>
>>> result = client.step(ChessAction(move="e2e4"))
>>> print(result.observation.game_status)
>>> print(result.reward)
"""
def _step_payload(self, action: ChessAction) -> Dict:
return {
"move": action.move,
}
def _parse_result(self, payload: Dict) -> StepResult[ChessObservation]:
obs_data = payload.get("observation", {})
observation = ChessObservation(
board_fen=obs_data.get("board_fen", ""),
legal_moves=obs_data.get("legal_moves", []),
white_move=obs_data.get("white_move", ""),
black_move=obs_data.get("black_move"),
material_balance=obs_data.get("material_balance", 0.0),
game_status=obs_data.get("game_status", "ongoing"),
captured_pieces=obs_data.get("captured_pieces", []),
done=payload.get("done", False),
reward=payload.get("reward"),
metadata=obs_data.get("metadata", {}),
)
return StepResult(
observation=observation,
reward=payload.get("reward"),
done=payload.get("done", False),
)
def _parse_state(self, payload: Dict) -> State:
return State(
episode_id=payload.get("episode_id"),
step_count=payload.get("step_count", 0),
)
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