implement limit and fix evaluation

chesspp/stockfish_strategy.py

@@ -1,14 +1,25 @@
+import os
 import chess
 from chesspp.i_strategy import IStrategy
 import chess.engine
 
+_DIR = os.path.abspath(os.path.dirname(__file__))
 
 class StockFishStrategy(IStrategy):
-    stockfish: chess.engine.SimpleEngine
 
     def __init__(self):
-        self.stockfish = chess.engine.SimpleEngine.popen_uci(
-            "/home/luke/projects/pp-project/chess-engine-pp/stockfish/stockfish-ubuntu-x86-64-avx2")
+        self._stockfish = None
+
+    @property
+    def stockfish(self) -> chess.engine.SimpleEngine:
+        if self._stockfish is None:
+            self._stockfish = self.stockfish = chess.engine.SimpleEngine.popen_uci(
+                os.path.join(_DIR, "../stockfish/stockfish-ubuntu-x86-64-avx2"))
+        return self._stockfish
+
+    @stockfish.setter
+    def stockfish(self, stockfish):
+        self._stockfish = stockfish
 
     def pick_next_move(self, board: chess.Board) -> chess.Move | None:
         move = self.stockfish.play(board, chess.engine.Limit(depth=4)).move