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Move game phase computation to MaterialInfo

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Game phase is a strictly function of the material
combination so its natural place is MaterialInfo,
not position.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2009-11-13 13:29:04 +01:00
parent 314faa905a
commit 71e852ea81
4 changed files with 40 additions and 24 deletions
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11
src/evaluate.cpp
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@@ -370,7 +370,7 @@ Value do_evaluate(const Position& pos, EvalInfo& ei, int threadID) {
if (ei.pi->passed_pawns())
evaluate_passed_pawns(pos, ei);
Phase phase = pos.game_phase();
Phase phase = ei.mi->game_phase();
// Middle-game specific evaluation terms
if (phase > PHASE_ENDGAME)
@@ -444,13 +444,10 @@ Value quick_evaluate(const Position &pos) {
assert(pos.is_ok());
static const
ScaleFactor sf[2] = {SCALE_FACTOR_NORMAL, SCALE_FACTOR_NORMAL};
static const ScaleFactor sf[2] = {SCALE_FACTOR_NORMAL, SCALE_FACTOR_NORMAL};
Phase ph = pos.game_phase();
Color stm = pos.side_to_move();
return Sign[stm] * scale_by_game_phase(pos.value(), ph, sf);
Value v = scale_by_game_phase(pos.value(), MaterialInfoTable::game_phase(pos), sf);
return (pos.side_to_move() == WHITE ? v : -v);
}