adding book usage

1 files changed, 10 insertions, 0 deletions

diff --git a/src/bot.cpp b/src/bot.cpp
index 02dfd22..193e487 100644
--- a/src/bot.cpp
+++ b/src/bot.cpp
@@ -2,6 +2,7 @@
 #include "board/board.hpp"
 #include "evaluate.hpp"
 #include "moves.hpp"
+#include "opening_book.hpp"
 #include "zobrist.hpp"
 
 #include <algorithm>
@@ -251,6 +252,10 @@ static void PrintInfo(const int depth, const int engineScore,
 
 Move GetBestMove(Game *b, const int maxDepth) {
   Nodes = 0;
+
+  Polyglot_Book book;
+  book.Load("book.bin");
+
   int actualDepth = maxDepth > 0 ? maxDepth : MAXIMUM_DEPTH;
   bool usingDefaultDepth = actualDepth == MAXIMUM_DEPTH;
   auto legalMoves = GetSortedLegalMoves(b, true, nullptr);
@@ -268,6 +273,11 @@ Move GetBestMove(Game *b, const int maxDepth) {
   int depth = 1;
 
   while (continueSearching) {
+    if (book.HasMove(*b)) {
+      bestMove = book.GetMove(*b);
+      continueSearching = false;
+      break;
+    }
     SearchResult result = SearchDepth(b, depth, &bestMove);
     bestMove = result.bestMove;