OMGeeky/hcsalmon1-Chess-Engine-Test
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Update chess_move_generator.cpp

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movelist to 50 and removed unnecessary if statements
This commit is contained in:
Coding with Tom
2025-01-22 13:29:36 +00:00
committed by GitHub
parent 218e105f26
commit 1092c3f466
1 changed files with 105 additions and 68 deletions
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173
cpp/chess_move_generator.cpp
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@@ -1,4 +1,5 @@
#include <iostream>
#include "constants.h"
@@ -529,6 +530,60 @@ void ParseFenGlobal(const char input[], const size_t startingIndex)
}
bool OutOfBounds(const int move)
{
if (move < 0)
{
return true;
}
if (move > 63)
{
return true;
}
return false;
}
void PrintMoveNoNL(const int move[])
{ //starting
if (OutOfBounds(move[MOVE_STARTING]) == true)
{
printf("%d", move[MOVE_STARTING]);
}
else
{
printf("%c", SQ_CHAR_X[move[MOVE_STARTING]]);
printf("%c", SQ_CHAR_Y[move[MOVE_STARTING]]);
}
//target
if (OutOfBounds(move[MOVE_TARGET]) == true)
{
printf("%d", move[MOVE_TARGET]);
}
else
{
printf("%c", SQ_CHAR_X[move[MOVE_TARGET]]);
printf("%c", SQ_CHAR_Y[move[MOVE_TARGET]]);
}
int tag = move[MOVE_TAG];
if (tag == TAG_BCaptureKnightPromotion || tag == TAG_BKnightPromotion || tag == TAG_WKnightPromotion || tag == TAG_WCaptureKnightPromotion)
{
printf("n");
}
else if (tag == TAG_BCaptureRookPromotion || tag == TAG_BRookPromotion || tag == TAG_WRookPromotion || tag == TAG_WCaptureRookPromotion)
{
printf("r");
}
else if (tag == TAG_BCaptureBishopPromotion || tag == TAG_BBishopPromotion || tag == TAG_WBishopPromotion || tag == TAG_WCaptureBishopPromotion)
{
printf("b");
}
else if (tag == TAG_BCaptureQueenPromotion || tag == TAG_BQueenPromotion || tag == TAG_WQueenPromotion || tag == TAG_WCaptureQueenPromotion)
{
printf("q");
}
}
unsigned long long PerftInlineGlobal(const int depth, const int ply)
{
//if (depth == 0)
@@ -536,7 +591,7 @@ unsigned long long PerftInlineGlobal(const int depth, const int ply)
// return 1;
//}
int move_list[250][4];
int move_list[50][4];
int move_count = 0;
//Move generating variables
@@ -576,10 +631,7 @@ unsigned long long PerftInlineGlobal(const int depth, const int ply)
{
const int pawn_square = (DEBRUIJN64[MAGIC * (temp_bitboard ^ (temp_bitboard - 1)) >> 58]);
if (check_bitboard == 0)
{
check_bitboard = 1ULL << pawn_square;
}
check_bitboard = 1ULL << pawn_square;
whiteKingCheckCount++;
}
@@ -590,10 +642,7 @@ unsigned long long PerftInlineGlobal(const int depth, const int ply)
{
const int knight_square = (DEBRUIJN64[MAGIC * (temp_bitboard ^ (temp_bitboard - 1)) >> 58]);
if (check_bitboard == 0)
{
check_bitboard = SQUARE_BBS[knight_square];
}
check_bitboard = SQUARE_BBS[knight_square];
whiteKingCheckCount++;
}
@@ -608,10 +657,7 @@ unsigned long long PerftInlineGlobal(const int depth, const int ply)
if (temp_pin_bitboard == 0)
{
if (check_bitboard == 0)
{
check_bitboard = INBETWEEN_BITBOARDS[whiteKingPosition][piece_square];
}
check_bitboard = INBETWEEN_BITBOARDS[whiteKingPosition][piece_square];
whiteKingCheckCount++;
}
else
@@ -638,10 +684,8 @@ unsigned long long PerftInlineGlobal(const int depth, const int ply)
if (temp_pin_bitboard == 0)
{
if (check_bitboard == 0)
{
check_bitboard = INBETWEEN_BITBOARDS[whiteKingPosition][piece_square];
}
check_bitboard = INBETWEEN_BITBOARDS[whiteKingPosition][piece_square];
whiteKingCheckCount++;
}
else
@@ -669,10 +713,8 @@ unsigned long long PerftInlineGlobal(const int depth, const int ply)
if (temp_pin_bitboard == 0)
{
if (check_bitboard == 0)
{
check_bitboard = INBETWEEN_BITBOARDS[whiteKingPosition][piece_square];
}
check_bitboard = INBETWEEN_BITBOARDS[whiteKingPosition][piece_square];
whiteKingCheckCount++;
}
else
@@ -699,10 +741,8 @@ unsigned long long PerftInlineGlobal(const int depth, const int ply)
if (temp_pin_bitboard == 0)
{
if (check_bitboard == 0)
{
check_bitboard = INBETWEEN_BITBOARDS[whiteKingPosition][piece_square];
}
check_bitboard = INBETWEEN_BITBOARDS[whiteKingPosition][piece_square];
whiteKingCheckCount++;
}
else
@@ -1360,10 +1400,7 @@ unsigned long long PerftInlineGlobal(const int depth, const int ply)
{
const int pawn_square = (DEBRUIJN64[MAGIC * (temp_bitboard ^ (temp_bitboard - 1)) >> 58]);
if (check_bitboard == 0)
{
check_bitboard = SQUARE_BBS[pawn_square];
}
check_bitboard = SQUARE_BBS[pawn_square];
blackKingCheckCount++;
}
@@ -1372,12 +1409,9 @@ unsigned long long PerftInlineGlobal(const int depth, const int ply)
temp_bitboard = bitboard_array_global[WN] & KNIGHT_ATTACKS[blackKingPosition];
if (temp_bitboard != 0)
{
int knight_square = (DEBRUIJN64[MAGIC * (temp_bitboard ^ (temp_bitboard - 1)) >> 58]);
const int knight_square = (DEBRUIJN64[MAGIC * (temp_bitboard ^ (temp_bitboard - 1)) >> 58]);
if (check_bitboard == 0)
{
check_bitboard = SQUARE_BBS[knight_square];
}
check_bitboard = SQUARE_BBS[knight_square];
blackKingCheckCount++;
}
@@ -1387,20 +1421,18 @@ unsigned long long PerftInlineGlobal(const int depth, const int ply)
temp_bitboard = bitboard_array_global[WB] & bishopAttacksChecks;
while (temp_bitboard != 0)
{
int piece_square = (DEBRUIJN64[MAGIC * (temp_bitboard ^ (temp_bitboard - 1)) >> 58]);
const int piece_square = (DEBRUIJN64[MAGIC * (temp_bitboard ^ (temp_bitboard - 1)) >> 58]);
temp_pin_bitboard = INBETWEEN_BITBOARDS[blackKingPosition][piece_square] & BLACK_OCCUPANCIES_LOCAL;
if (temp_pin_bitboard == 0)
{
if (check_bitboard == 0)
{
check_bitboard = INBETWEEN_BITBOARDS[blackKingPosition][piece_square];
}
check_bitboard = INBETWEEN_BITBOARDS[blackKingPosition][piece_square];
blackKingCheckCount++;
}
else
{
int pinned_square = (DEBRUIJN64[MAGIC * (temp_pin_bitboard ^ (temp_pin_bitboard - 1)) >> 58]);
const int pinned_square = (DEBRUIJN64[MAGIC * (temp_pin_bitboard ^ (temp_pin_bitboard - 1)) >> 58]);
temp_pin_bitboard &= temp_pin_bitboard - 1;
if (temp_pin_bitboard == 0)
@@ -1417,21 +1449,19 @@ unsigned long long PerftInlineGlobal(const int depth, const int ply)
temp_bitboard = bitboard_array_global[WQ] & bishopAttacksChecks;
while (temp_bitboard != 0)
{
int piece_square = (DEBRUIJN64[MAGIC * (temp_bitboard ^ (temp_bitboard - 1)) >> 58]);
const int piece_square = (DEBRUIJN64[MAGIC * (temp_bitboard ^ (temp_bitboard - 1)) >> 58]);
temp_pin_bitboard = INBETWEEN_BITBOARDS[blackKingPosition][piece_square] & BLACK_OCCUPANCIES_LOCAL;
if (temp_pin_bitboard == 0)
{
if (check_bitboard == 0)
{
check_bitboard = INBETWEEN_BITBOARDS[blackKingPosition][piece_square];
}
check_bitboard = INBETWEEN_BITBOARDS[blackKingPosition][piece_square];
blackKingCheckCount++;
}
else
{
int pinned_square = (DEBRUIJN64[MAGIC * (temp_pin_bitboard ^ (temp_pin_bitboard - 1)) >> 58]);
const int pinned_square = (DEBRUIJN64[MAGIC * (temp_pin_bitboard ^ (temp_pin_bitboard - 1)) >> 58]);
temp_pin_bitboard &= temp_pin_bitboard - 1;
if (temp_pin_bitboard == 0)
@@ -1449,20 +1479,18 @@ unsigned long long PerftInlineGlobal(const int depth, const int ply)
temp_bitboard = bitboard_array_global[WR] & rook_attacks;
while (temp_bitboard != 0)
{
int piece_square = (DEBRUIJN64[MAGIC * (temp_bitboard ^ (temp_bitboard - 1)) >> 58]);
const int piece_square = (DEBRUIJN64[MAGIC * (temp_bitboard ^ (temp_bitboard - 1)) >> 58]);
temp_pin_bitboard = INBETWEEN_BITBOARDS[blackKingPosition][piece_square] & BLACK_OCCUPANCIES_LOCAL;
if (temp_pin_bitboard == 0)
{
if (check_bitboard == 0)
{
check_bitboard = INBETWEEN_BITBOARDS[blackKingPosition][piece_square];
}
check_bitboard = INBETWEEN_BITBOARDS[blackKingPosition][piece_square];
blackKingCheckCount++;
}
else
{
int pinned_square = (DEBRUIJN64[MAGIC * (temp_pin_bitboard ^ (temp_pin_bitboard - 1)) >> 58]);
const int pinned_square = (DEBRUIJN64[MAGIC * (temp_pin_bitboard ^ (temp_pin_bitboard - 1)) >> 58]);
temp_pin_bitboard &= temp_pin_bitboard - 1;
if (temp_pin_bitboard == 0)
@@ -1479,20 +1507,18 @@ unsigned long long PerftInlineGlobal(const int depth, const int ply)
temp_bitboard = bitboard_array_global[WQ] & rook_attacks;
while (temp_bitboard != 0)
{
int piece_square = (DEBRUIJN64[MAGIC * (temp_bitboard ^ (temp_bitboard - 1)) >> 58]);
const int piece_square = (DEBRUIJN64[MAGIC * (temp_bitboard ^ (temp_bitboard - 1)) >> 58]);
temp_pin_bitboard = INBETWEEN_BITBOARDS[blackKingPosition][piece_square] & BLACK_OCCUPANCIES_LOCAL;
if (temp_pin_bitboard == 0)
{
if (check_bitboard == 0)
{
check_bitboard = INBETWEEN_BITBOARDS[blackKingPosition][piece_square];
}
check_bitboard = INBETWEEN_BITBOARDS[blackKingPosition][piece_square];
blackKingCheckCount++;
}
else
{
int pinned_square = (DEBRUIJN64[MAGIC * (temp_pin_bitboard ^ (temp_pin_bitboard - 1)) >> 58]);
const int pinned_square = (DEBRUIJN64[MAGIC * (temp_pin_bitboard ^ (temp_pin_bitboard - 1)) >> 58]);
temp_pin_bitboard &= temp_pin_bitboard - 1;
if (temp_pin_bitboard == 0)
@@ -2136,12 +2162,14 @@ unsigned long long PerftInlineGlobal(const int depth, const int ply)
}
unsigned long long nodes = 0;// , priorNodes;
int copyEp = ep_global;
bool copy_castle[4];
copy_castle[0] = castle_rights_global[0];
copy_castle[1] = castle_rights_global[1];
copy_castle[2] = castle_rights_global[2];
copy_castle[3] = castle_rights_global[3];
const int copyEp = ep_global;
const bool copy_castle[4] =
{
castle_rights_global[0],
castle_rights_global[1],
castle_rights_global[2],
castle_rights_global[3],
};
for (size_t move_index = 0; move_index < move_count; ++move_index)
{
@@ -2486,7 +2514,7 @@ unsigned long long PerftInlineGlobal(const int depth, const int ply)
#pragma endregion
//priorNodes = nodes;
const int priorNodes = nodes;
nodes += PerftInlineGlobal(depth - 1, ply + 1);
#pragma region Unmakemove
@@ -2670,8 +2698,8 @@ unsigned long long PerftInlineGlobal(const int depth, const int ply)
//if (ply == 0)
//{
// PrintMoveNoNL(move_list[move_index]);
// printf(": %llu\n", nodes - priorNodes);
//PrintMoveNoNL(move_list[move_index]);
//printf(": %llu\n", nodes - priorNodes);
//}
}
@@ -2693,13 +2721,22 @@ void RunPerftInlineGlobal(const int depth)
printf("Elapsed time: %.2f milliseconds\n", elapsed_milliseconds);
}
void print_all()
{
for (size_t i = 0; i < 12; i++)
{
std::cout << i << ": " << *bitboardArray[i] << '\n';
}
}
int main()
{
CreateBoard();
//std::cin.get();
ParseFenGlobal(FEN_STARTING_POSITION, 0);
//std::cin.get();
//print_all();
RunPerftInlineGlobal(6);
return 0;