From de5300fc92cc9a77cdd641dd6f28b6de55bdb4de Mon Sep 17 00:00:00 2001
From: fieldsher <56013637+fieldsher@users.noreply.github.com>
Date: Sun, 13 Mar 2022 15:18:50 -0700
Subject: [PATCH] Update ChessEngineHelper.py

---
 ChessHelpers/ChessEngineHelper.py | 86 +++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)

diff --git a/ChessHelpers/ChessEngineHelper.py b/ChessHelpers/ChessEngineHelper.py
index 827939c..e81258b 100644
--- a/ChessHelpers/ChessEngineHelper.py
+++ b/ChessHelpers/ChessEngineHelper.py
@@ -224,3 +224,89 @@ def score_material(self, board):
                     count_black += 1
                     score -= self.piece_score[piece_type]
         return score
+    def control_diagonals(board):
+    # This procedure determines if diagonals are controlled by bishops or queen
+    
+    # Define figures capable of controlling the diagonals
+    diagonal_figures = [b, q]
+    
+    # set initial heuristic to zero
+    diagonal_heuristics = 0
+    
+    # Convert board
+    chess_board = MakeMatrix().convert_to_matrix(board)
+    
+    # Define diagonals
+    black_diagonal = [chess_board[1,1], chess_board[2,2], chess_board[3,3], chess_board[4,4],
+                      chess_board[5,5], chess_board[6,6], chess_board[7,7], chess_board[8,8]]
+    
+    white_diagonal = [chess_board[1,8], chess_board[2,7], chess_board[3,6], chess_board[4,5], 
+                      chess_board[5,4], chess_board[6,3], chess_board[7,2], chess_board[8,1]]
+    
+        
+    for cell in black_diagonal:   
+        for figure in diagonal_figures:
+            if figure == cell:
+                diagonal_heuristics += 3
+    for cell in white_diagonal:
+        for figure in diagonal_figures:
+            if figure == cell:
+                diagonal_heuristics += 3
+            
+    
+    return diagonal_heuristics
+
+    def control_center(board, side):
+    # This procedure will give heuristic points for control of central squares
+    
+    # Convert board
+    chess_board = MakeMatrix().convert_to_matrix(board)
+    
+    # define central squares: e4, e5, d4, d5
+    central_squares = [chess_board[4,4], chess_board[4,5], chess_board[5,4], chess_board[5,5]]
+    
+    # Define squares can be used to control central squares by pawns
+    white_pawn_squares = [chess_board[3,3], chess_board[4,3], chess_board[5,3], chess_board[6,3],
+                          chess_board[4,3], chess_board[4,4], chess_board[4,5], chess_board[4,6]]
+    
+    black_pawn_squares = [chess_board[3,6], chess_board[4,6], chess_board[5,6], chess_board[6,6], 
+                          chess_board[3,5], chess_board[4,5], chess_board[5,5], chess_board[5,6]]
+            
+    # Define squares can be used to control central squares by knights
+    knight_squares = [chess_board[3,2], chess_board[4,2], chess_board[5,2], chess_board[6,2],
+                      chess_board[2,3], chess_board[3,3], chess_board[6,3], chess_board[7,3],
+                      chess_board[2,4], chess_board[7,4], chess_board[2,5], chess_board[7,5],
+                      chess_board[2,6], chess_board[3,6], chess_board[6,6], chess_board[7,6],
+                      chess_board[3,7], chess_board[4,7], chess_board[5,7], chess_board[6,7]]
+    
+    # Set control center heuristics to 0
+    ccHeuristic = 0
+    
+    # Give points for each piece in central square (pawn or knight)
+    
+    for square in central_squares:
+        if square == p:
+            ccHeuristic +=1
+        elif square == n:
+            ccHeuristic +=2  
+    
+    # Give points for white pawns in controlling positions
+    if side == white:
+        for square in white_pawn_squares:
+            if square == p:
+                ccHeuristic +=1
+            
+    # Give points for black pawns in controlling positions        
+    if side == black:
+        for square in black_pawn_squares:
+            if square == p:
+                ccHeuristic +=1
+            
+    
+    # Give points for knights controlling central squares
+    
+    for square in knight_squares:
+        if square == n:
+            ccHeuristic += 2
+            
+    return ccHeuristic