bb: bb_{first_bb,next,multiple{}, chessdefs: relative sq diffs

2024-04-04 10:03:43 +02:00
parent 30af886594
commit 027aa2c132
4 changed files with 106 additions and 44 deletions
--- a/src/chessdefs.h
+++ b/src/chessdefs.h
@@ -134,6 +134,11 @@ typedef enum {
    NORTH_WEST = (NORTH + WEST),
 } dir_t;

+/* define diff for relative squares */
+#define sq_up(c)          ((c) == WHITE ? NORTH: SOUTH)
+#define sq_upleft(c)      ((c) == WHITE ? NORTH_WEST: SOUTH_EAST)
+#define sq_upright(c)     ((c) == WHITE ? NORTH_EAST: SOUTH_WEST)
+
 #include <time.h>

 typedef struct mclock {