1 files changed, 38 insertions, 0 deletions
diff --git a/src/bitboard.h b/src/bitboard.h
new file mode 100644
index 0000000..b92d67f
--- /dev/null
+++ b/src/bitboard.h
@@ -0,0 +1,38 @@
+#ifndef BITBOARD_H
+#define BITBOARD_H
+
+#include "ints.h"
+
+typedef u64 bitboard_t;
+
+enum {
+  WHITE_KING,
+  WHITE_QUEEN,
+  WHITE_ROOK,
+  WHITE_BISHOP,
+  WHITE_KNIGHT,
+  WHITE_PAWN,
+  BLACK_KING,
+  BLACK_QUEEN,
+  BLACK_ROOK,
+  BLACK_BISHOP,
+  BLACK_KNIGHT,
+  BLACK_PAWN,
+  PIECE_TYPE_COUNT,
+};
+
+enum {
+  WHITE_SHORT_CASTLE,
+  WHITE_LONG_CASTLE,
+  BLACK_SHORT_CASTLE,
+  BLACK_LONG_CASTLE,
+};
+
+typedef struct {
+  bitboard_t bitboards[PIECE_TYPE_COUNT];
+  u8 castling;
+} position;
+
+position starting_position();
+
+#endif // !BITBOARD_H