Spaces:
Sleeping
Sleeping
File size: 13,777 Bytes
100a6dd |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 |
# chess_engine/api/game_controller.py
import chess
from typing import Dict, List, Optional, Tuple, Any
from enum import Enum
from dataclasses import dataclass
from chess_engine.board import ChessBoard, MoveResult, GameState
from chess_engine.ai.stockfish_wrapper import StockfishWrapper, DifficultyLevel
from chess_engine.ai.evaluation import ChessEvaluator
from chess_engine.promotion import PromotionMoveHandler
@dataclass
class GameOptions:
"""Game configuration options"""
player_color: chess.Color = chess.WHITE
difficulty: DifficultyLevel = DifficultyLevel.MEDIUM
time_limit: float = 1.0 # seconds for AI to think
use_opening_book: bool = True
enable_analysis: bool = True
stockfish_path: Optional[str] = None
class GameController:
"""
Main game controller that handles game flow, user moves, and AI responses
"""
def __init__(self, options: Optional[GameOptions] = None):
"""
Initialize game controller
Args:
options: Game configuration options
"""
self.options = options or GameOptions()
self.board = ChessBoard()
self.engine = StockfishWrapper(stockfish_path=self.options.stockfish_path)
self.evaluator = ChessEvaluator()
self.game_active = False
self.last_analysis = None
def start_new_game(self, options: Optional[GameOptions] = None) -> Dict[str, Any]:
"""
Start a new game
Args:
options: Game options (optional, uses current options if None)
Returns:
Game state information
"""
if options:
self.options = options
# Reset board
self.board.reset_board()
# Initialize engine
if not self.engine.is_initialized:
engine_initialized = self.engine.initialize()
if not engine_initialized:
return {
"status": "error",
"message": "Failed to initialize chess engine",
"board_state": self.board.get_board_state()
}
# Set difficulty
self.engine.set_difficulty_level(self.options.difficulty)
self.game_active = True
# If AI plays white, make first move
if self.options.player_color == chess.BLACK:
ai_move = self._get_ai_move()
if ai_move:
self.board.make_move(ai_move)
return {
"status": "success",
"message": "New game started",
"board_state": self.board.get_board_state(),
"player_color": "white" if self.options.player_color == chess.WHITE else "black"
}
def make_player_move(self, move_str: str) -> Dict[str, Any]:
"""
Process a player's move
Args:
move_str: Move in UCI notation (e.g., 'e2e4', 'e7e8q') or SAN (e.g., 'e4', 'e8=Q')
Returns:
Response with move result and updated game state
"""
if not self.game_active:
return {
"status": "error",
"message": "No active game",
"board_state": self.board.get_board_state()
}
# Check if it's player's turn
if self.board.board.turn != self.options.player_color:
return {
"status": "error",
"message": "Not your turn",
"board_state": self.board.get_board_state()
}
# Make the move
result, move_info = self.board.make_move(move_str)
# Handle promotion requirement
if result == MoveResult.INVALID and move_info and move_info.promotion_required:
return {
"status": "promotion_required",
"message": "Pawn promotion requires piece selection",
"promotion_details": {
"from": move_info.uci[:2],
"to": move_info.uci[2:4],
"available_pieces": ["queen", "rook", "bishop", "knight"]
},
"board_state": self.board.get_board_state()
}
if result != MoveResult.VALID:
return {
"status": "error",
"message": f"Invalid move: {move_str}",
"board_state": self.board.get_board_state()
}
# Check if game is over after player's move
game_state = self._check_game_state()
if game_state:
return game_state
# Make AI move
ai_move = self._get_ai_move()
if ai_move:
self.board.make_move(ai_move)
# Check if game is over after AI's move
game_state = self._check_game_state()
if game_state:
return game_state
# Analyze position if enabled
analysis = None
if self.options.enable_analysis:
analysis = self._analyze_position()
self.last_analysis = analysis
return {
"status": "success",
"player_move": move_str,
"ai_move": ai_move,
"board_state": self.board.get_board_state(),
"analysis": analysis
}
def _get_ai_move(self) -> Optional[str]:
"""
Get AI's move using Stockfish
Returns:
Move in UCI notation or None if error
"""
return self.engine.get_best_move(
self.board.board,
time_limit=self.options.time_limit
)
def _check_game_state(self) -> Optional[Dict[str, Any]]:
"""
Check if game is over
Returns:
Game result dict if game is over, None otherwise
"""
board_state = self.board.get_board_state()
game_state = board_state["game_state"]
if game_state in [GameState.CHECKMATE, GameState.STALEMATE, GameState.DRAW]:
self.game_active = False
result = "draw"
winner = None
if game_state == GameState.CHECKMATE:
# Winner is the opposite of who's turn it is
winner = "black" if self.board.board.turn == chess.WHITE else "white"
result = f"{winner}_win"
return {
"status": "game_over",
"result": result,
"winner": winner,
"reason": game_state.value,
"board_state": board_state
}
return None
def _analyze_position(self) -> Dict[str, Any]:
"""
Analyze current position
Returns:
Analysis data
"""
# Get evaluation from our evaluator
evaluation = self.evaluator.evaluate_position(self.board.board)
# Get Stockfish evaluation
stockfish_eval = self.engine.evaluate_position(self.board.board)
# Get best moves with evaluation
best_moves = self.engine.get_legal_moves_with_evaluation(self.board.board)[:3]
return {
"evaluation": {
"total": evaluation.total_score / 100, # Convert to pawns
"material": evaluation.material_score / 100,
"positional": evaluation.positional_score / 100,
"safety": evaluation.safety_score / 100,
"mobility": evaluation.mobility_score / 100,
"pawn_structure": evaluation.pawn_structure_score / 100,
"endgame": evaluation.endgame_score / 100,
"white_advantage": evaluation.white_advantage / 100,
"stockfish": stockfish_eval
},
"best_moves": best_moves
}
def get_hint(self) -> Dict[str, Any]:
"""
Get a hint for the current position
Returns:
Hint information
"""
if not self.game_active:
return {
"status": "error",
"message": "No active game"
}
# Get best move from engine
best_move = self._get_ai_move()
if not best_move:
return {
"status": "error",
"message": "Could not generate hint"
}
# Get move explanation
explanation = self._get_move_explanation(best_move)
return {
"status": "success",
"hint": best_move,
"explanation": explanation,
"board_state": self.board.get_board_state()
}
def _get_move_explanation(self, move_str: str) -> str:
"""
Generate a simple explanation for a move
Args:
move_str: Move in UCI notation
Returns:
Human-readable explanation
"""
try:
move = chess.Move.from_uci(move_str)
board = self.board.board
from_square = chess.square_name(move.from_square)
to_square = chess.square_name(move.to_square)
piece = board.piece_at(move.from_square)
if not piece:
return "Unknown move"
piece_name = chess.piece_name(piece.piece_type).capitalize()
# Check if move is a capture
capture = ""
if board.is_capture(move):
captured_piece = board.piece_at(move.to_square)
if captured_piece:
captured_name = chess.piece_name(captured_piece.piece_type).capitalize()
capture = f", capturing {captured_name}"
else:
# En passant
capture = ", capturing Pawn en passant"
# Check if move gives check
check = ""
if board.gives_check(move):
check = ", giving check"
# Check if castling
if board.is_castling(move):
if chess.square_file(move.to_square) > chess.square_file(move.from_square):
return "Kingside castling"
else:
return "Queenside castling"
# Check if promotion
promotion = ""
if move.promotion:
promoted_piece = chess.piece_name(move.promotion).capitalize()
promotion = f", promoting to {promoted_piece}"
elif piece.piece_type == chess.PAWN and self.board.is_promotion_move(from_square, to_square):
# This is a promotion move but piece not specified
promotion = ", promotion required"
return f"{piece_name} from {from_square} to {to_square}{capture}{promotion}{check}"
except Exception:
return "Move analysis not available"
def undo_move(self, count: int = 2) -> Dict[str, Any]:
"""
Undo moves (both player and AI)
Args:
count: Number of half-moves to undo (default 2 for one full move)
Returns:
Updated game state
"""
if not self.game_active:
return {
"status": "error",
"message": "No active game",
"board_state": self.board.get_board_state()
}
success = True
for _ in range(count):
if not self.board.undo_move():
success = False
break
return {
"status": "success" if success else "partial",
"message": f"Undid {count} moves" if success else "Could not undo all requested moves",
"board_state": self.board.get_board_state()
}
def resign(self) -> Dict[str, Any]:
"""
Resign the current game
Returns:
Game result
"""
if not self.game_active:
return {
"status": "error",
"message": "No active game"
}
self.game_active = False
winner = "black" if self.options.player_color == chess.WHITE else "white"
return {
"status": "game_over",
"result": f"{winner}_win",
"winner": winner,
"reason": "resignation",
"board_state": self.board.get_board_state()
}
def get_game_state(self) -> Dict[str, Any]:
"""
Get current game state
Returns:
Game state information
"""
board_state = self.board.get_board_state()
return {
"status": "active" if self.game_active else "inactive",
"player_color": "white" if self.options.player_color == chess.WHITE else "black",
"board_state": board_state,
"difficulty": self.options.difficulty.name,
"last_analysis": self.last_analysis
}
def close(self):
"""Clean up resources"""
if self.engine:
self.engine.close() |