pseudo-moves for pieces (not pawns nor special moves)

2021-10-31 12:16:11 +01:00
parent 07e7cbc72a
commit 2f701c4bd5
9 changed files with 286 additions and 7 deletions
--- a/src/board.h
+++ b/src/board.h
@@ -27,7 +27,10 @@ typedef struct {
 */
 #define SQ88(f, r)   (16 * (r) + (f))             /* from rank,file to sq88 */
 #define FILE88(s)    ((s) & 7)                    /* from sq88 to file */
-#define RANK88(s)    ((s) >> 8)                   /* from sq88 to rank */
+#define RANK88(s)    ((s) >> 4)                   /* from sq88 to rank */
+
+#define SQ88_NOK(s)  ((s) & 0x88)                 /* invalid square */
+#define SQ88_OK(s)   (!SQ88_NOK(s))

 /* piece human notation
 */