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revert to color at LSB, to avoid easy mistakes

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This commit is contained in:
Bruno Raoult
2021-11-19 12:15:53 +01:00
parent b582798751
commit 6b2c1702f6
3 changed files with 22 additions and 25 deletions
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19
src/chessdefs.h
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@@ -22,13 +22,13 @@ typedef u8 piece_t;
enum {
E_EMPTY = 0,
E_COLOR, /* LSB */
E_PAWN,
E_KNIGHT,
E_BISHOP,
E_ROOK,
E_QUEEN,
E_KING,
E_COLOR = 8
};
@@ -36,23 +36,22 @@ enum {
*/
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 */
PAWN = 1 << (E_PAWN - 1), /* 0x02 00000010 */
KNIGHT = 1 << (E_KNIGHT - 1), /* 0x04 00000100 */
BISHOP = 1 << (E_BISHOP - 1), /* 0x08 00001000 */
ROOK = 1 << (E_ROOK - 1), /* 0x10 00010000 */
QUEEN = 1 << (E_QUEEN - 1), /* 0x20 00100000 */
KING = 1 << (E_KING - 1), /* 0x40 01000000 */
};
#define WHITE 0 /* 0x00 00000000 */
#define BLACK 1 /* 0x01 00000001 */
#define OPPONENT(p) !(p)
#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) /* 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 */