Fix mate test

[xboard.git] / moves.c

diff --git a/moves.c b/moves.c
index 4df7d42..f0b2af7 100644 (file)
--- a/moves.c
+++ b/moves.c
@@ -635,8 +635,25 @@ void GenPseudoLegal(board, flags, callback, closure)
                  }
              break;
 
+           Amazon:
+             /* First do Bishop,then continue like Chancellor */
+             for (rs = -1; rs <= 1; rs += 2)
+                for (fs = -1; fs <= 1; fs += 2)
+                 for (i = 1;; i++) {
+                     rt = rf + (i * rs);
+                     ft = ff + (i * fs);
+                      if (rt < 0 || rt >= BOARD_HEIGHT || ft < BOARD_LEFT || ft >= BOARD_RGHT) break;
+                     if (SameColor(board[rf][ff], board[rt][ft])) break;
+                     callback(board, flags, NormalMove,
+                              rf, ff, rt, ft, closure);
+                     if (board[rt][ft] != EmptySquare) break;
+                 }
+             m++;
+             goto doRook;
+
            // Use Lance as Berolina / Spartan Pawn.
            case WhiteLance:
+             if(gameInfo.variant == VariantSuper) goto Amazon;
              if (rf < BOARD_HEIGHT-1 && BlackPiece(board[rf + 1][ff]))
                  callback(board, flags,
                           rf >= BOARD_HEIGHT-1-promoRank ? WhitePromotion : NormalMove,
@@ -652,6 +669,7 @@ void GenPseudoLegal(board, flags, callback, closure)
              break;
                
            case BlackLance:
+             if(gameInfo.variant == VariantSuper) goto Amazon;
              if (rf > 0 && WhitePiece(board[rf - 1][ff]))
                  callback(board, flags,
                           rf <= promoRank ? BlackPromotion : NormalMove,
@@ -1025,6 +1043,8 @@ if(appData.debugMode) fprintf(debugFP, "LegalDrop: %d @ %d,%d)\n", piece, ft, rt
                 if(board[r][ft] == piece) return IllegalMove; // or there already is a Pawn in file
             // should still test if we mate with this Pawn
         }
+    } else if(gameInfo.variant == VariantSChess) { // only back-rank drops
+        if (rt != (piece < BlackPawn ? 0 : BOARD_HEIGHT-1)) return IllegalMove;
     } else {
         if( (piece == WhitePawn || piece == BlackPawn) &&
             (rt == 0 || rt == BOARD_HEIGHT -1 ) )
@@ -1201,13 +1221,13 @@ int MateTest(board, flags)
     if (cl.count > 0) {
        return inCheck ? MT_CHECK : MT_NONE;
     } else {
-        if(gameInfo.holdingsWidth && gameInfo.variant != VariantSuper || gameInfo.variant != VariantGreat) { // drop game
+        if(gameInfo.holdingsWidth && gameInfo.variant != VariantSuper && gameInfo.variant != VariantGreat) { // drop game
             int r, f, n, holdings = flags & F_WHITE_ON_MOVE ? BOARD_WIDTH-1 : 0;
             for(r=0; r<BOARD_HEIGHT; r++) for(f=BOARD_LEFT; f<BOARD_RGHT; f++) if(board[r][f] == EmptySquare) // all empty squares
                 for(n=0; n<BOARD_HEIGHT; n++) // all pieces in hand
                     if(board[n][holdings] != EmptySquare) {
                         int moveType = LegalDrop(board, flags, board[n][holdings], r, f);
-                        if(moveType == WhiteDrop || moveType == BlackDrop) return MT_CHECK; // we can resolve check by legal drop
+                        if(moveType == WhiteDrop || moveType == BlackDrop) return (inCheck ? MT_CHECK : MT_NONE); // we have legal drop
                     }
         }
        if(gameInfo.variant == VariantSuicide) // [HGM] losers: always stalemate, since no check, but result varies
@@ -1584,6 +1604,11 @@ ChessMove CoordsToAlgebraic(board, flags, rf, ff, rt, ft, promoChar, out)
             /* [HGM] in Shogi non-pawns can promote */
             *outp++ = promoChar; // Don't bother to correct move type, return value is never used!
         }
+        else if (gameInfo.variant != VariantSuper && promoChar && 
+                 (piece == WhiteLance || piece == BlackLance) ) { // Lance sometimes represents Pawn
+            *outp++ = '=';
+            *outp++ = ToUpper(promoChar);
+        }
         else if (gameInfo.variant == VariantSChess && promoChar) { // and in S-Chess we have gating
             *outp++ = '/';
             *outp++ = ToUpper(promoChar);