X-Git-Url: http://winboard.nl/cgi-bin?a=blobdiff_plain;f=backend.c;h=bab4386732c87438f1e20d5186f0660fe19ee9a0;hb=e47771e97b511c69facf6e6e38a40cd946f4bcbc;hp=329901efa8b0e5711d966e55e2f72213535639b9;hpb=d6897c980542d3ac3d1e9d47fed19766e4d87b63;p=xboard.git

diff --git a/backend.c b/backend.c
index 329901e..bab4386 100644
--- a/backend.c
+++ b/backend.c
@@ -5328,6 +5328,7 @@ UploadGameEvent ()
 }
 
 int killX = -1, killY = -1; // [HGM] lion: used for passing e.p. capture square to MakeMove
+int legNr = 1;
 
 void
 CoordsToComputerAlgebraic (int rf, int ff, int rt, int ft, char promoChar, char move[7])
@@ -6107,7 +6108,7 @@ InitPosition (int redraw)
     case VariantFalcon:
       pieces = FalconArray;
       gameInfo.boardWidth = 10;
-      SetCharTable(pieceToChar, "PNBRQ.............FKpnbrq.............fk");
+      SetCharTable(pieceToChar, "PNBRQ............FKpnbrq............fk");
       break;
     case VariantXiangqi:
       pieces = XiangqiArray;
@@ -7263,7 +7264,7 @@ Mark (Board board, int flags, ChessMove kind, int rf, int ff, int rt, int ft, VO
 {
     typedef char Markers[BOARD_RANKS][BOARD_FILES];
     Markers *m = (Markers *) closure;
-    if(rf == fromY && ff == fromX && (killX < 0 && !(rt == rf && ft == ff) || abs(ft-killX) < 2 && abs(rt-killY) < 2))
+    if(rf == fromY && ff == fromX && (killX < 0 ? !(rt == rf && ft == ff) && legNr & 1 : rt == killY && ft == killX || legNr & 2))
 	(*m)[rt][ft] = 1 + (board[rt][ft] != EmptySquare
 			 || kind == WhiteCapturesEnPassant
 			 || kind == BlackCapturesEnPassant) + 3*(kind == FirstLeg && killX < 0), legal[rt][ft] = 1;
@@ -8892,19 +8893,23 @@ FakeBookMove: // [HGM] book: we jump here to simulate machine moves after book h
       if(startedFromSetupPosition) return;
       ParseFEN(boards[0], &dummy, message+s, FALSE);
       DrawPosition(TRUE, boards[0]);
+      CopyBoard(initialPosition, boards[0]);
       startedFromSetupPosition = TRUE;
       return;
     }
     if(sscanf(message, "piece %s %s", buf2, buf1) == 2) {
       ChessSquare piece = WhitePawn;
       char *p=buf2;
+      if(*p == '+') piece = CHUPROMOTED WhitePawn, p++;
+      piece += CharToPiece(*p) - WhitePawn;
       if(cps != &first || appData.testLegality && *engineVariant == NULLCHAR
+      /* always accept definition of  */       && piece != WhiteFalcon && piece != BlackFalcon
+      /* wild-card pieces.            */       && piece != WhiteCobra  && piece != BlackCobra
       /* For variants we don't have   */       && gameInfo.variant != VariantBerolina
       /* correct rules for, we cannot */       && gameInfo.variant != VariantCylinder
       /* enforce legality on our own! */       && gameInfo.variant != VariantUnknown
+                                               && gameInfo.variant != VariantGreat
                                                && gameInfo.variant != VariantFairy    ) return;
-      if(*p == '+') piece = CHUPROMOTED WhitePawn, p++;
-      piece += CharToPiece(*p) - WhitePawn;
       if(piece < EmptySquare) {
         pieceDefs = TRUE;
         ASSIGN(pieceDesc[piece], buf1);
@@ -12853,7 +12858,7 @@ LoadGame (FILE *f, int gameNumber, char *title, int useList)
 	if (!err) numPGNTags++;
 
         /* [HGM] PGNvariant: automatically switch to variant given in PGN tag */
-        if(gameInfo.variant != oldVariant) {
+        if(gameInfo.variant != oldVariant && (gameInfo.variant != VariantNormal || gameInfo.variantName == NULL || *gameInfo.variantName == NULLCHAR)) {
             startedFromPositionFile = FALSE; /* [HGM] loadPos: variant switch likely makes position invalid */
 	    ResetFrontEnd(); // [HGM] might need other bitmaps. Cannot use Reset() because it clears gameInfo :-(
 	    InitPosition(TRUE);
@@ -12872,6 +12877,8 @@ LoadGame (FILE *f, int gameNumber, char *title, int useList)
 	    return FALSE;
 	  }
 	  CopyBoard(boards[0], initial_position);
+	  if(*engineVariant) // [HGM] for now, assume FEN in engine-defined variant game is default initial position
+	    CopyBoard(initialPosition, initial_position);
 	  if (blackPlaysFirst) {
 	    currentMove = forwardMostMove = backwardMostMove = 1;
 	    CopyBoard(boards[1], initial_position);
@@ -15074,6 +15081,8 @@ EditPositionMenuEvent (ChessSquare selection, int x, int y)
 
     switch (selection) {
       case ClearBoard:
+	fromX = fromY = killX = killY = -1; // [HGM] abort any move entry in progress
+	MarkTargetSquares(1);
 	CopyBoard(currentBoard, boards[0]);
 	CopyBoard(menuBoard, initialPosition);
 	if (gameMode == IcsExamining && ics_type == ICS_FICS) {
@@ -17864,7 +17873,7 @@ PositionToFEN (int move, char *overrideCastling, int moveCounts)
             q = (boards[move][CASTLING][1] == BOARD_LEFT &&
                  boards[move][CASTLING][2] != NoRights  );
             if(handW) { // for S-Chess with pieces in hand, list virgin pieces between K and Q
-                for(i=BOARD_RGHT-1-k; i>=BOARD_LEFT+q && j; i--)
+                for(i=BOARD_RGHT-1-k; i>=BOARD_LEFT+q; i--)
                     if((boards[move][0][i] != WhiteKing || k+q == 0) &&
                         boards[move][VIRGIN][i] & VIRGIN_W) *p++ = i + AAA + 'A' - 'a';
             }
@@ -17875,7 +17884,7 @@ PositionToFEN (int move, char *overrideCastling, int moveCounts)
             q = (boards[move][CASTLING][4] == BOARD_LEFT &&
                  boards[move][CASTLING][5] != NoRights  );
             if(handB) {
-                for(i=BOARD_RGHT-1-k; i>=BOARD_LEFT+q && j; i--)
+                for(i=BOARD_RGHT-1-k; i>=BOARD_LEFT+q; i--)
                     if((boards[move][BOARD_HEIGHT-1][i] != BlackKing || k+q == 0) &&
                         boards[move][VIRGIN][i] & VIRGIN_B) *p++ = i + AAA;
             }