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MovePicker: rename number_of_moves() in number_of_evasions()

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It is more clear that only in that case the move number is
correct, otherwise is only a partial quantity: the number of
moves of that phase.

In case of PH_EVASIONS instead we have only one phase.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2009-08-31 14:28:11 +02:00
parent c9d364f9ca
commit cf71efc34b
4 changed files with 31 additions and 32 deletions
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29
src/movepick.h
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@@ -37,20 +37,6 @@
struct SearchStack;
enum MovegenPhase {
PH_TT_MOVES, // Transposition table move and mate killer
PH_GOOD_CAPTURES, // Queen promotions and captures with SEE values >= 0
PH_KILLERS, // Killer moves from the current ply
PH_NONCAPTURES, // Non-captures and underpromotions
PH_BAD_CAPTURES, // Queen promotions and captures with SEE values < 0
PH_EVASIONS, // Check evasions
PH_QCAPTURES, // Captures in quiescence search
PH_QCHECKS, // Non-capture checks in quiescence search
PH_STOP
};
typedef uint8_t MovegenPhaseT;
/// MovePicker is a class which is used to pick one legal move at a time from
/// the current position. It is initialized with a Position object and a few
/// moves we have reason to believe are good. The most important method is
@@ -67,7 +53,7 @@ public:
MovePicker(const Position& p, Move ttm, Depth d, const History& h, SearchStack* ss = NULL);
Move get_next_move();
Move get_next_move(Lock& lock);
int number_of_moves() const;
int number_of_evasions() const;
Bitboard discovered_check_candidates() const;
private:
@@ -81,7 +67,7 @@ private:
MoveStack ttMoves[2], killers[2];
bool finished;
int phase;
const MovegenPhaseT* phasePtr;
const uint8_t* phasePtr;
MoveStack *curMove, *lastMove, *lastBadCapture;
Bitboard dc, pinned;
MoveStack moves[256], badCaptures[64];
@@ -92,12 +78,13 @@ private:
//// Inline functions
////
/// MovePicker::number_of_moves() simply returns the numOfMoves member
/// variable. It is intended to be used in positions where the side to move
/// is in check, for detecting checkmates or situations where there is only
/// a single reply to check.
/// MovePicker::number_of_evasions() simply returns the number of moves in
/// evasions phase. It is intended to be used in positions where the side to
/// move is in check, for detecting checkmates or situations where there is
/// only a single reply to check.
/// WARNING: It works as long as PH_EVASIONS is the _only_ phase for evasions.
inline int MovePicker::number_of_moves() const {
inline int MovePicker::number_of_evasions() const {
return int(lastMove - moves);
}