1 files changed, 6 insertions, 4 deletions
diff --git a/src/engine/bitboard.h b/src/engine/bitboard.h
index 912cad0..b137101 100644
--- a/src/engine/bitboard.h
+++ b/src/engine/bitboard.h
@@ -22,10 +22,10 @@ enum {
 };
 
 enum {
-  WHITE_SHORT_CASTLE,
-  WHITE_LONG_CASTLE,
-  BLACK_SHORT_CASTLE,
-  BLACK_LONG_CASTLE,
+  WHITE_SHORT_CASTLE = 1 << 0,
+  WHITE_LONG_CASTLE = 1 << 1,
+  BLACK_SHORT_CASTLE = 1 << 2,
+  BLACK_LONG_CASTLE = 1 << 3,
 };
 
 enum {
@@ -57,6 +57,8 @@ typedef struct {
   u8 castling;
   u8 turn;
   u8 passantable_file;
+  u16 halfmove_clock;
+  u16 fullmove_clock;
 } position_t;
 
 position_t position_starting();