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Coding with Tom
2025-01-12 21:43:58 +00:00
committed by GitHub
parent 19c17b8bf3
commit dcf0d928b7
11 changed files with 3534 additions and 0 deletions
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Odin/bbconstants.odin Normal file
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package main
SQUARE_BBS: [64]u64 = [64]u64{
1,
2,
4,
8,
16,
32,
64,
128,
256,
512,
1024,
2048,
4096,
8192,
16384,
32768,
65536,
131072,
262144,
524288,
1048576,
2097152,
4194304,
8388608,
16777216,
33554432,
67108864,
134217728,
268435456,
536870912,
1073741824,
2147483648,
4294967296,
8589934592,
17179869184,
34359738368,
68719476736,
137438953472,
274877906944,
549755813888,
1099511627776,
2199023255552,
4398046511104,
8796093022208,
17592186044416,
35184372088832,
70368744177664,
140737488355328,
281474976710656,
562949953421312,
1125899906842624,
2251799813685248,
4503599627370496,
9007199254740992,
18014398509481984,
36028797018963968,
72057594037927936,
144115188075855872,
288230376151711744,
576460752303423488,
1152921504606846976,
2305843009213693952,
4611686018427387904,
9223372036854775808,
};
ONE_U64:u64 : 1;
BP_STARTING_POSITIONS:u64 : 65280;
WP_STARTING_POSITIONS:u64 : 71776119061217280;
BK_STARTING_POSITION:u64 : 16;
WK_STARTING_POSITION:u64 : 1152921504606846976;
BN_STARTING_POSITIONS:u64 : 66;
WN_STARTING_POSITIONS: u64 : 4755801206503243776;
WR_STARTING_POSITIONS: u64 : 9295429630892703744;
BR_STARTING_POSITIONS: u64 : 129;
BB_STARTING_POSITIONS: u64 : 36;
WB_STARTING_POSITIONS: u64 : 2594073385365405696;
WQ_STARTING_POSITION: u64 : 576460752303423488;
BQ_STARTING_POSITION: u64 : 8;
EMPTY_BITBOARD: u64 : 0;
MAX_ULONG: u64 : 18446744073709551615;
MAGIC: u64 : 0x03f79d71b4cb0a89;
@(rodata)
DEBRUIJN64: [64]int = [64]int{
0, 47, 1, 56, 48, 27, 2, 60,
57, 49, 41, 37, 28, 16, 3, 61,
54, 58, 35, 52, 50, 42, 21, 44,
38, 32, 29, 23, 17, 11, 4, 62,
46, 55, 26, 59, 40, 36, 15, 53,
34, 51, 20, 43, 31, 22, 10, 45,
25, 39, 14, 33, 19, 30, 9, 24,
13, 18, 8, 12, 7, 6, 5, 63,
};
BitscanForward :: proc(tempBitboard: u64) -> int {
return (DEBRUIJN64[MAGIC*(tempBitboard~(tempBitboard-1))>>58]);
}
RANK_1_BITBOARD:u64: 18374686479671623680;
RANK_2_BITBOARD:u64: 71776119061217280;
RANK_3_BITBOARD:u64: 280375465082880;
RANK_4_BITBOARD:u64: 1095216660480;
RANK_5_BITBOARD:u64: 4278190080;
RANK_6_BITBOARD:u64: 16711680;
RANK_7_BITBOARD:u64: 65280;
RANK_8_BITBOARD:u64: 255;
FILE_A_BITBOARD:u64: 72340172838076673;
FILE_B_BITBOARD:u64: 144680345676153346;
FILE_C_BITBOARD:u64: 289360691352306692;
FILE_D_BITBOARD:u64: 578721382704613384;
FILE_E_BITBOARD:u64: 1157442765409226768;
FILE_F_BITBOARD:u64: 2314885530818453536;
FILE_G_BITBOARD:u64: 4629771061636907072;
FILE_H_BITBOARD:u64: 9259542123273814144;
@(rodata)
SQ_CHAR_Y: [65]byte = [65]byte{
'8', '8', '8', '8', '8', '8', '8', '8',
'7', '7', '7', '7', '7', '7', '7', '7',
'6', '6', '6', '6', '6', '6', '6', '6',
'5', '5', '5', '5', '5', '5', '5', '5',
'4', '4', '4', '4', '4', '4', '4', '4',
'3', '3', '3', '3', '3', '3', '3', '3',
'2', '2', '2', '2', '2', '2', '2', '2',
'1', '1', '1', '1', '1', '1', '1', '1', 'A',
};
@(rodata)
SQ_CHAR_X: [65]byte = [65]byte{
'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'N',
};