/usr/include/osl/checkmate/libertyEstimator.h is in libosl-dev 0.4.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 | /* libertyEstimator.h
*/
#ifndef _LIBERTYESTIMATOR_H
#define _LIBERTYESTIMATOR_H
#include "osl/checkmate/proofNumberTable.h"
#include "osl/move.h"
namespace osl
{
namespace checkmate
{
struct PureLibertyEstimator
{
/** @return move 後の玉のまわりの利きのないマス(の予想) */
template <class State>
static void attackH(Player attacker, const State& state,
King8Info info, Move move,
unsigned int& proof_number,
unsigned int& disproof_number)
{
const Player defender = alt(attacker);
const Square king_position = state.kingSquare(defender);
proof_number = Proof_Number_Table.countLiberty
(state, info.libertyCount(), move, king_position, info);
disproof_number = 1;
}
/** @return move 後の玉のまわりの利きのあるマス(の予想) */
template <class State>
static void defenseH(Player /*attacker*/, const State&, Move /*move*/,
unsigned int& proof_number,
unsigned int& disproof_number)
{
proof_number = 1;
disproof_number = 1;
}
};
/**
* 玉の動ける場所を基本としたHの推定.
* 駒を取る/捨てるなども多少考慮する.
*/
struct LibertyEstimator
{
/** 攻撃側の move に対する proof_number と disproof_number を予想する */
template <class State>
static void attackH(Player attacker, const State&, King8Info, Move move,
unsigned int& proof_number, unsigned int& disproof_number);
/** 防御側の move に対する proof_number と disproof_number を予想する */
template <class State>
static void defenseH(Player attacker, const State&, Move move,
unsigned int& proof_number, unsigned int& disproof_number);
};
} // namespace checkmate
} // namespace osl
template<typename State>
void osl::checkmate::LibertyEstimator::
attackH(Player attacker, const State& state, King8Info info, Move move,
unsigned int& proof_number, unsigned int& disproof_number)
{
const Player defender = alt(attacker);
PureLibertyEstimator::attackH
(attacker, state, info, move, proof_number, disproof_number);
// 功罪はあるが，速くなる問題の方が多そう
if (state.hasMultipleEffectAt(defender, move.to()))
++proof_number;
const Square from=move.from();
const Square to=move.to();
const int attack_support = state.countEffect(attacker,to);
const int defense_support = state.countEffect(defender,to);
if ((attack_support + (from.isPieceStand() ? 1 : 0)) > defense_support)
{
/** 効きが上回っていれば先にやってみる */
disproof_number=2;
}
else if (move.capturePtype()!=PTYPE_EMPTY)
{
/** 駒を取る */
Ptype capturePtype=unpromote(move.capturePtype());
if ((capturePtype == SILVER)
|| (capturePtype == GOLD))
{
disproof_number=2;
}
else
{
proof_number+=1;
disproof_number=1;
}
}
else
{
proof_number+=1;
disproof_number=1;
}
}
template<typename State>
void osl::checkmate::LibertyEstimator::
defenseH(Player attacker, const State& state, Move move,
unsigned int& proof_number, unsigned int& disproof_number)
{
/** captureは価値が高い */
if (move.capturePtype()!=PTYPE_EMPTY)
{
proof_number=2;
disproof_number=1;
return;
}
if (move.ptype()==KING)
{
proof_number=1;
disproof_number=1;
return;
}
const Square to = move.to();
if ((state.countEffect(attacker,to) + (move.isDrop() ? 1 : 0))
<= state.countEffect(alt(attacker),to))
{
proof_number=2;
disproof_number=1;
return;
}
proof_number=1;
disproof_number = 2;
}
#endif /* _LIBERTYESTIMATOR_H */
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