perf(board): implementing magic bitboards for faster move generation

1 files changed, 6 insertions, 2 deletions

diff --git a/src/moves.hpp b/src/moves.hpp
index e0ed427..47e41c0 100644
--- a/src/moves.hpp
+++ b/src/moves.hpp
@@ -10,12 +10,16 @@ enum move_generate_options : std::uint8_t {
   CAPTUARES_ONLY,
   NON_CAPTUARES_ONLY,
 };
-
+void initMagicBitboards();
 std::vector<uint16_t> GetLegalMoves(Game *g,
                                     const move_generate_options &options);
 std::vector<uint16_t> GetPseudoLegalMoves(const Game &g,
                                           const move_generate_options &options);
-Position IndexToPosition(int i);
+constexpr Position IndexToPosition(int i) {
+  auto rank = static_cast<uint8_t>(i / 8);
+  auto file = static_cast<uint8_t>(i % 8);
+  return {.rank = rank, .file = file};
+}
 bool IsSquareAttacked(const Game &g, Position square, bool byColor);
 GameState GetNewGameState(Game *g);