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piece_t change, pack piece_details, conversion piece: mask<=>number

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Bruno Raoult
2021-11-10 15:54:13 +01:00
parent bc07a949b0
commit 7c98f0d4c5
9 changed files with 92 additions and 50 deletions
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36
src/chessdefs.h
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@@ -20,23 +20,37 @@
*/
typedef u8 piece_t;
#define EMPTY 0
enum {
E_EMPTY = 0,
E_PAWN,
E_KNIGHT,
E_BISHOP,
E_ROOK,
E_QUEEN,
E_KING,
E_COLOR = 8
};
enum {
EMPTY = 0,
PAWN = 1 << (E_PAWN - 1), /* 0x01 00000001 */
KNIGHT = 1 << (E_KNIGHT - 1), /* 0x02 00000010 */
BISHOP = 1 << (E_BISHOP - 1), /* 0x04 00000100 */
ROOK = 1 << (E_ROOK - 1), /* 0x08 00001000 */
QUEEN = 1 << (E_QUEEN - 1), /* 0x10 00010000 */
KING = 1 << (E_KING - 1), /* 0x20 00100000 */
};
#define WHITE 0 /* 0x00 00000000 */
#define BLACK 1 /* 0x01 00000001 */
#define PAWN (1 << 1) /* 0x02 00000010 */
#define KNIGHT (1 << 2) /* 0x04 00000100 */
#define BISHOP (1 << 3) /* 0x08 00001000 */
#define ROOK (1 << 4) /* 0x10 00010000 */
#define QUEEN (1 << 5) /* 0x20 00100000 */
#define KING (1 << 6) /* 0x40 01000000 */
#define MASK_PIECE 0x3F /* 00111111 */
#define MASK_COLOR 0x80 /* 10000000 */
#define MASK_COLOR 0x01 /* 00000001 */
#define MASK_PIECE 0x7E /* 01111110 */
#define COLOR(p) ((p) & MASK_COLOR)
#define COLOR(p) ((p) & MASK_COLOR) /* bitmask */
#define VCOLOR(p) (!!COLOR(p)) /* WHITE/BLACK */
#define PIECE(p) ((p) & MASK_PIECE)
#define E_PIECE(p) (ffs64(PIECE(p))) /* convert mask to E_XX */
#define IS_WHITE(p) (!COLOR(p))
#define IS_BLACK(p) (COLOR(p))