bpaul-chess

commit 1eb875775bfa42320616ff8b1e5ee913b1d8fac7
parent 25f5a5d8e5b1f22986782bfa72a779fc215dfefb
Author: benjamin paul <bpaul@bpaul.xyz>
Date:   Sun,  8 Aug 2021 15:24:57 +1000

position struct

Diffstat:
A
src/board/bb.h
 | 
4
++++
A
src/board/pos.h
 | 
30
++++++++++++++++++++++++++++++

2 files changed, 34 insertions(+), 0 deletions(-)
diff --git a/src/board/bb.h b/src/board/bb.h
@@ -0,0 +1,4 @@
+#pragma once
+
+/* Bitboard */
+typedef unsigned long long bb;
diff --git a/src/board/pos.h b/src/board/pos.h
@@ -0,0 +1,30 @@
+#pragma once
+
+#include "bb.h"
+
+enum sides { WHITE, BLACK, SIDE_CNT };
+
+enum pieces { PAWN, KNIGHT, BISHOP, ROOK, QUEEN, KING, PIECE_CNT };
+
+struct pos {
+	bb sides[SIDE_CNT];
+	bb pieces[PIECE_CNT];
+
+    /* Only need one bit, either white or black */
+	char turn : 1;
+
+    /* Each bit represents one of the castling rules, a bit for whether white
+     * can kingside castle, one for queenside castling, and a bit for black for
+     * each too */
+    char castle : 4;
+
+    /* enpas refers to the square that a double pushed pawn moves to. Since
+     * there are 64 squares, 6 bits are needed */
+    char enpas : 6;
+
+    /* Tracker for 50 move rule */
+    unsigned char fifty;
+
+    /* Track game length (hence the name) */
+    unsigned short game_length;
+};