score.hpp (6748B)
1 #ifndef STELLAR_SCORE_H 2 #define STELLAR_SCORE_H 3 4 #include <array> 5 6 #include "piece.hpp" 7 #include "utils.hpp" 8 #define MAX_PLY 64 9 10 #define SCORE_INFINITY 32000 11 #define MATE_VALUE 31000 12 #define MATE_SCORE 30000 13 14 namespace score { 15 16 inline constexpr const uint16_t value[2][6] = { 17 {82, 337, 365, 477, 1025, 12000}, 18 {94, 201, 297, 512, 936, 12000}, 19 }; 20 21 inline constexpr const int16_t position[2][6][64] = { 22 // clang-format off 23 { 24 { 25 0, 0, 0, 0, 0, 0, 0, 0, 26 -35, -1, -20, -23, -15, 24, 38, -22, 27 -26, -4, -4, -10, 3, 3, 33, -12, 28 -27, -2, -5, 12, 17, 6, 10, -25, 29 -14, 13, 6, 21, 23, 12, 17, -23, 30 -6, 7, 26, 31, 65, 56, 25, -20, 31 98, 134, 61, 95, 68, 126, 34, -11, 32 0, 0, 0, 0, 0, 0, 0, 0, 33 }, { 34 -105, -21, -58, -33, -17, -28, -19, -23, 35 -29, -53, -12, -3, -1, 18, -14, -19, 36 -23, -9, 12, 10, 19, 17, 25, -16, 37 -13, 4, 16, 13, 28, 19, 21, -8, 38 -9, 17, 19, 53, 37, 69, 18, 22, 39 -47, 60, 37, 65, 84, 129, 73, 44, 40 -73, -41, 72, 36, 23, 62, 7, -17, 41 -167, -89, -34, -49, 61, -97, -15, -107, 42 }, { 43 -33, -3, -14, -21, -13, -12, -39, -21, 44 4, 15, 16, 0, 7, 21, 33, 1, 45 0, 15, 15, 15, 14, 27, 18, 10, 46 -6, 13, 13, 26, 34, 12, 10, 4, 47 -4, 5, 19, 50, 37, 37, 7, -2, 48 -16, 37, 43, 40, 35, 50, 37, -2, 49 -26, 16, -18, -13, 30, 59, 18, -47, 50 -29, 4, -82, -37, -25, -42, 7, -8, 51 }, { 52 -19, -13, 1, 17, 16, 7, -37, -26, 53 -44, -16, -20, -9, -1, 11, -6, -71, 54 -45, -25, -16, -17, 3, 0, -5, -33, 55 -36, -26, -12, -1, 9, -7, 6, -23, 56 -24, -11, 7, 26, 24, 35, -8, -20, 57 -5, 19, 26, 36, 17, 45, 61, 16, 58 27, 32, 58, 62, 80, 67, 26, 44, 59 32, 42, 32, 51, 63, 9, 31, 43, 60 }, { 61 -1, -18, -9, 10, -15, -25, -31, -50, 62 -35, -8, 11, 2, 8, 15, -3, 1, 63 -14, 2, -11, -2, -5, 2, 14, 5, 64 -9, -26, -9, -10, -2, -4, 3, -3, 65 -27, -27, -16, -16, -1, 17, -2, 1, 66 -13, -17, 7, 8, 29, 56, 47, 57, 67 -24, -39, -5, 1, -16, 57, 28, 54, 68 -28, 0, 29, 12, 59, 44, 43, 45, 69 }, { 70 -15, 36, 12, -54, 8, -28, 24, 14, 71 1, 7, -8, -64, -43, -16, 9, 8, 72 -14, -14, -22, -46, -44, -30, -15, -27, 73 -49, -1, -27, -39, -46, -44, -33, -51, 74 -17, -20, -12, -27, -30, -25, -14, -36, 75 -9, 24, 2, -16, -20, 6, 22, -22, 76 29, -1, -20, -7, -8, -4, -38, -29, 77 -65, 23, 16, -15, -56, -34, 2, 13, 78 } 79 }, { 80 { 81 0, 0, 0, 0, 0, 0, 0, 0, 82 13, 8, 8, 10, 13, 0, 2, -7, 83 4, 7, -6, 1, 0, -5, -1, -8, 84 13, 9, -3, -7, -7, -8, 3, -1, 85 32, 24, 13, 5, -2, 4, 17, 17, 86 94, 100, 85, 67, 56, 53, 82, 84, 87 178, 173, 158, 134, 147, 132, 165, 187, 88 0, 0, 0, 0, 0, 0, 0, 0, 89 }, { 90 -29, -51, -23, -15, -22, -18, -50, -64, 91 -42, -20, -10, -5, -2, -20, -23, -44, 92 -23, -3, -1, 15, 10, -3, -20, -22, 93 -18, -6, 16, 25, 16, 17, 4, -18, 94 -17, 3, 22, 22, 22, 11, 8, -18, 95 -24, -20, 10, 9, -1, -9, -19, -41, 96 -25, -8, -25, -2, -9, -25, -24, -52, 97 -58, -38, -13, -28, -31, -27, -63, -99, 98 }, { 99 -23, -9, -23, -5, -9, -16, -5, -17, 100 -14, -18, -7, -1, 4, -9, -15, -27, 101 -12, -3, 8, 10, 13, 3, -7, -15, 102 -6, 3, 13, 19, 7, 10, -3, -9, 103 -3, 9, 12, 9, 14, 10, 3, 2, 104 2, -8, 0, -1, -2, 6, 0, 4, 105 -8, -4, 7, -12, -3, -13, -4, -14, 106 -14, -21, -11, -8, -7, -9, -17, -24, 107 }, { 108 -9, 2, 3, -1, -5, -13, 4, -20, 109 -6, -6, 0, 2, -9, -9, -11, -3, 110 -4, 0, -5, -1, -7, -12, -8, -16, 111 3, 5, 8, 4, -5, -6, -8, -11, 112 4, 3, 13, 1, 2, 1, -1, 2, 113 7, 7, 7, 5, 4, -3, -5, -3, 114 11, 13, 13, 11, -3, 3, 8, 3, 115 13, 10, 18, 15, 12, 12, 8, 5, 116 }, { 117 -33, -28, -22, -43, -5, -32, -20, -41, 118 -22, -23, -30, -16, -16, -23, -36, -32, 119 -16, -27, 15, 6, 9, 17, 10, 5, 120 -18, 28, 19, 47, 31, 34, 39, 23, 121 3, 22, 24, 45, 57, 40, 57, 36, 122 -20, 6, 9, 49, 47, 35, 19, 9, 123 -17, 20, 32, 41, 58, 25, 30, 0, 124 -9, 22, 22, 27, 27, 19, 10, 20, 125 }, { 126 -53, -34, -21, -11, -28, -14, -24, -43, 127 -27, -11, 4, 13, 14, 4, -5, -17, 128 -19, -3, 11, 21, 23, 16, 7, -9, 129 -18, -4, 21, 24, 27, 23, 9, -11, 130 -8, 22, 24, 27, 26, 33, 26, 3, 131 10, 17, 23, 15, 20, 45, 44, 13, 132 -12, 17, 14, 17, 17, 38, 23, 11, 133 -74, -35, -18, -18, -11, 15, 4, -17, 134 } 135 } 136 // clang-format on 137 }; 138 139 inline constexpr const uint16_t phase_opening = 6192; 140 inline constexpr const uint16_t phase_endgame = 518; 141 142 inline constexpr int16_t interpolate(int16_t phase_score, int16_t opening, int16_t endgame) { 143 return (opening * phase_score + endgame * (phase_opening - phase_score)) / phase_opening; 144 } 145 146 enum Phase { 147 OPENING, 148 ENDGAME, 149 }; 150 151 inline constexpr int16_t get(const Type piece, const Phase phase = OPENING) { return value[phase][piece]; } 152 153 inline constexpr int16_t get(Type piece, Color color, Square square, Phase phase = ENDGAME) { 154 if (color != WHITE) square = get_mirror(square); 155 return position[phase][piece][square]; 156 } 157 158 inline constexpr const uint8_t pawn_double_opening = 5; 159 inline constexpr const uint8_t pawn_double_endgame = 10; 160 inline constexpr const uint8_t pawn_isolated_opening = 5; 161 inline constexpr const uint8_t pawn_isolated_endgame = 10; 162 163 inline constexpr const std::array<std::array<int16_t, 8>, 2> pawn_passed = { 164 {{0, 10, 30, 50, 75, 100, 150, 200}, {200, 150, 100, 75, 50, 30, 10, 0}}}; 165 166 inline constexpr const uint8_t file_open_semi = 10; 167 inline constexpr const uint8_t file_open = 15; 168 169 } // namespace score 170 171 #endif