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#include "phalanx.h"
tflag Flag;
unsigned short B[120]; /* The chessboard */
tlist L[120]; /* List of pieces */
/*** L[1].next ... white king position; L[2].next ... black king position */
tmove PV[MAXPLY][MAXPLY]; /* Principal var. */
tmove Pondermove;
tgamenode G[MAXCOUNTER];
short Counter;
unsigned Color;
short LastIter;
short Depth, Ply, PlyLimit, FollowPV, Totmat, Abort, NoAbort;
long AllDepth = 0;
long AllNPS = 0;
unsigned long Nodes;
/* params that cannot be pushed via SIGALM handler */
int A_n, A_i, A_d;
tmove * A_m;
short N_moves[8] = { -21, -19, -12, -8, 21, 19, 12, 8 };
short RB_dirs[8] = { 1, -1, 10, -10, 11, -11, 9, -9 };
short Values[7] = { 0, P_VALUE, N_VALUE, B_VALUE, R_VALUE, Q_VALUE, 0 };
signed char Th_[80] =
{
0, 91, 92, 93, 94, 95, 96, 97, 98, 0,
0, 81, 82, 83, 84, 85, 86, 87, 88, 0,
0, 71, 72, 73, 74, 75, 76, 77, 78, 0,
0, 61, 62, 63, 64, 65, 66, 67, 68, 0,
0, 51, 52, 53, 54, 55, 56, 57, 58, 0,
0, 41, 42, 43, 44, 45, 46, 47, 48, 0,
0, 31, 32, 33, 34, 35, 36, 37, 38, 0,
0, 21, 22, 23, 24, 25, 26, 27, 28, 0
}; signed char *Th = Th_-20;
signed char Tv_[80] =
{
0, 28, 27, 26, 25, 24, 23, 22, 21, 0,
0, 38, 37, 36, 35, 34, 33, 32, 31, 0,
0, 48, 47, 46, 45, 44, 43, 42, 41, 0,
0, 58, 57, 56, 55, 54, 53, 52, 51, 0,
0, 68, 67, 66, 65, 64, 63, 62, 61, 0,
0, 78, 77, 76, 75, 74, 73, 72, 71, 0,
0, 88, 87, 86, 85, 84, 83, 82, 81, 0,
0, 98, 97, 96, 95, 94, 93, 92, 91, 0
}; signed char *Tv = Tv_-20;
short HP[100] = /* hash codes for pieces */
{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PAWN */
0, 3, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* KNIGHT */
0, 5, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* BISHOP */
0, 7, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* ROOK */
0, 9, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* QUEEN */
0, 11, 10, 0 /* KING */
};
short HS_[80] = /* hash codes for squares */
{
0, 0, 1, 2, 3, 4, 5, 6, 7, 0,
0, 8, 9, 10, 11, 12, 13, 14, 15, 0,
0, 16, 17, 18, 19, 20, 21, 22, 23, 0,
0, 24, 25, 26, 27, 28, 29, 30, 31, 0,
0, 32, 33, 34, 35, 36, 37, 38, 39, 0,
0, 40, 41, 42, 43, 44, 45, 46, 47, 0,
0, 48, 49, 50, 51, 52, 53, 54, 55, 0,
0, 56, 57, 58, 59, 60, 61, 62, 63, 0
}; short * HS=HS_-20;
tdist dist[120*120];
inline short taxi_dist( short a, short b )
{ return abs( a%10 - b%10 ) + abs( a/10 - b/10 ); }
inline short diag_dist( short a, short b )
{
short fdi = abs( a%10 - b%10 );
short rdi = abs( a/10 - b/10 );
return abs(rdi-fdi) + max(rdi,fdi);
}
inline short max_dist( short a, short b )
{
short fdi = abs( a%10 - b%10 );
short rdi = abs( a/10 - b/10 );
return max(rdi,fdi);
}
inline short min_dist( short a, short b )
{
short fdi = abs( a%10 - b%10 );
short rdi = abs( a/10 - b/10 );
return min(rdi,fdi);
}
void initdist(void)
{
short i,j;
for( i=A1; i!=H9; i++ ) for( j=A1; j!=H9; j++ )
{
dist[120*i+j].taxi = taxi_dist(i,j);
dist[120*i+j].diag = diag_dist(i,j);
dist[120*i+j].max = max_dist(i,j);
dist[120*i+j].min = min_dist(i,j);
}
}
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