Implement less kludgy way for conditional string options

[xboard.git] / moves.c

diff --git a/moves.c b/moves.c
index 25263c8..30f94b5 100644 (file)
--- a/moves.c
+++ b/moves.c
@@ -809,9 +809,10 @@ GenPseudoLegal (Board board, int flags, MoveCallback callback, VOIDSTAR closure,
                               rf, ff, rf + 1, ff + s, closure);
                  }
                  if (rf >= BOARD_HEIGHT+1>>1) {// [HGM] grand: 4th & 5th rank on 10-board
+                     int victimFile = (board[LAST_FILE] == 100 ? ff + s : board[LAST_FILE]);
                       if (ff + s >= BOARD_LEFT && ff + s < BOARD_RGHT &&
-                         (epfile == ff + s || epfile == EP_UNKNOWN) && rf < BOARD_HEIGHT-3 &&
-                          board[rf][ff + s] == BlackPawn &&
+                         (board[EP_FILE] == ff + s || epfile == EP_UNKNOWN) && rf < BOARD_HEIGHT-3 &&
+                          (board[rf][victimFile] == BlackPawn || board[rf][victimFile] == BlackLance) &&
                           board[rf+1][ff + s] == EmptySquare) {
                          callback(board, flags, WhiteCapturesEnPassant,
                                   rf, ff, rf+1, ff + s, closure);
@@ -859,9 +860,10 @@ GenPseudoLegal (Board board, int flags, MoveCallback callback, VOIDSTAR closure,
                               rf, ff, rf - 1, ff + s, closure);
                  }
                  if (rf < BOARD_HEIGHT>>1) {
+                     int victimFile = (board[LAST_FILE] == 100 ? ff + s : board[LAST_FILE]);
                       if (ff + s >= BOARD_LEFT && ff + s < BOARD_RGHT &&
-                         (epfile == ff + s || epfile == EP_UNKNOWN) && rf > 2 &&
-                         board[rf][ff + s] == WhitePawn &&
+                         (board[EP_FILE] == ff + s || epfile == EP_UNKNOWN) && rf > 2 &&
+                         (board[rf][victimFile] == WhitePawn || board[rf][victimFile] == WhiteLance) &&
                          board[rf-1][ff + s] == EmptySquare) {
                          callback(board, flags, BlackCapturesEnPassant,
                                   rf, ff, rf-1, ff + s, closure);
@@ -1735,6 +1737,8 @@ CheckTest (Board board, int flags, int rf, int ff, int rt, int ft, int enPassant
        }
     }
 
+    if(PieceToChar(king) == '.') return 0; // never in check if the royal piece does not participate
+
     if (rt >= 0) {
        if (enPassant) {
            captured = board[rf][ft];
@@ -1764,10 +1768,10 @@ CheckTest (Board board, int flags, int rf, int ff, int rt, int ft, int enPassant
     /* For compatibility with ICS wild 9, we scan the board in the
        order a1, a2, a3, ... b1, b2, ..., h8 to find the first king,
        and we test only whether that one is in check. */
+    cl.check = 0;
     for (cl.fking = BOARD_LEFT+0; cl.fking < BOARD_RGHT; cl.fking++)
        for (cl.rking = 0; cl.rking < BOARD_HEIGHT; cl.rking++) {
           if (board[cl.rking][cl.fking] == king) {
-             cl.check = 0;
               if(gameInfo.variant == VariantXiangqi) {
                   /* [HGM] In Xiangqi opposing Kings means check as well */
                   int i, dir;
@@ -1802,7 +1806,7 @@ CheckTest (Board board, int flags, int rf, int ff, int rt, int ft, int enPassant
        board[EP_STATUS] = ep;
     }
 
-    return cl.fking < BOARD_RGHT ? cl.check : 1000; // [HGM] atomic: return 1000 if we have no king
+    return cl.fking < BOARD_RGHT ? cl.check : (gameInfo.variant == VariantAtomic)*1000; // [HGM] atomic: return 1000 if we have no king
 }
 
 int