add license information & rename typedefs

src/position.h

@@ -1,22 +1,37 @@
+/* position.h - position management definitions.
+ *
+ * Copyright (C) 2021 Bruno Raoult ("br")
+ * Licensed under the GNU General Public License v3.0 or later.
+ * Some rights reserved. See COPYING.
+ *
+ * You should have received a copy of the GNU General Public License along with this
+ * program. If not, see <https://www.gnu.org/licenses/gpl-3.0-standalone.htmlL>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later <https://spdx.org/licenses/GPL-3.0-or-later.html>
+ *
+ */
+
 #ifndef POSITION_H
 #define POSITION_H
 
 #include <stdint.h>
-
+#include "chessdefs.h"
 #include "board.h"
+#include "list.h"
 
 typedef struct position {
-    short turn;
-    short castle;
+    piece_t turn;                                 /* we use only color bit */
+    castle_t castle;
+    square_t en_passant;
     short clock_50;
     short curmove;
-    SQUARE en_passant;
-    BOARD *board;
-} POS;
+    board_t *board;
+    struct list_head w_pieces, b_pieces;
+} pos_t;
 
-void pos_print(POS *pos);
-POS *pos_init(POS *pos);
-POS *pos_startpos(POS *pos);
-POS *pos_create();
+void pos_print(pos_t *pos);
+pos_t *pos_init(pos_t *pos);
+pos_t *pos_startpos(pos_t *pos);
+pos_t *pos_create();
 
 #endif