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This page holds the functions responsible for detecting if a given square is attacked by a given player.
=isAttacked=
<pre>
#include "stdafx.h"
#include "0x88_math.h"
int isAttacked( char byColor, S8 sq ) { /* pawns */ if ( byColor == WHITE ) { if ( IS_SQ( sq + SE ) && isPiece( WHITE, PAWN, sq + SE )
)
return 1;
)
return 1;
} else { if ( IS_SQ( sq + NE ) && isPiece( BLACK, PAWN, sq + NE )
)
return 1;
)
return 1;
} /* knights */ if ( leaperAttack( byColor, sq, KNIGHT ) ) return 1; /* kings */ if ( leaperAttack( byColor, sq, KING ) ) return 1; /* straight line sliders */ if ( straightAttack( byColor, sq, NORTH ) || straightAttack( byColor, sq, SOUTH ) || straightAttack( byColor, sq, EAST ) || straightAttack( byColor, sq, WEST ) ) return 1; /* diagonal sliders */ if ( diagAttack( byColor, sq, NE ) || diagAttack( byColor, sq, SE ) || diagAttack( byColor, sq, NW ) || diagAttack( byColor, sq, SW ) ) return 1; return 0;
}
</pre>
=leaperAttack=
<pre>
int leaperAttack( char byColor, S8 sq, char byPiece ) { S8 nextSq; for ( int dir = 0; dir < 8; dir++ ) { nextSq = sq + vector[byPiece][dir]; if ( IS_SQ(nextSq) && isPiece( byColor, byPiece, nextSq ) ) return 1; } return 0;
}
</pre>
=straightAttack=
<pre>
int straightAttack(char byColor, S8 sq, int vect) {
}
}
</pre>
=diagAttack=
<pre>
int diagAttack(int byColor, S8 sq, int vect) {
}
nextSq = nextSq + vect; } return 0;
}
</pre>
'''[[CPW-Engine|Up one Level]]'''
